LCOV - code coverage report
Current view: top level - fftools - ffmpeg.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 1943 2732 71.1 %
Date: 2017-12-14 19:11:59 Functions: 71 83 85.5 %

          Line data    Source code
       1             : /*
       2             :  * Copyright (c) 2000-2003 Fabrice Bellard
       3             :  *
       4             :  * This file is part of FFmpeg.
       5             :  *
       6             :  * FFmpeg is free software; you can redistribute it and/or
       7             :  * modify it under the terms of the GNU Lesser General Public
       8             :  * License as published by the Free Software Foundation; either
       9             :  * version 2.1 of the License, or (at your option) any later version.
      10             :  *
      11             :  * FFmpeg is distributed in the hope that it will be useful,
      12             :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
      13             :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      14             :  * Lesser General Public License for more details.
      15             :  *
      16             :  * You should have received a copy of the GNU Lesser General Public
      17             :  * License along with FFmpeg; if not, write to the Free Software
      18             :  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
      19             :  */
      20             : 
      21             : /**
      22             :  * @file
      23             :  * multimedia converter based on the FFmpeg libraries
      24             :  */
      25             : 
      26             : #include "config.h"
      27             : #include <ctype.h>
      28             : #include <string.h>
      29             : #include <math.h>
      30             : #include <stdlib.h>
      31             : #include <errno.h>
      32             : #include <limits.h>
      33             : #include <stdatomic.h>
      34             : #include <stdint.h>
      35             : 
      36             : #if HAVE_IO_H
      37             : #include <io.h>
      38             : #endif
      39             : #if HAVE_UNISTD_H
      40             : #include <unistd.h>
      41             : #endif
      42             : 
      43             : #include "libavformat/avformat.h"
      44             : #include "libavdevice/avdevice.h"
      45             : #include "libswresample/swresample.h"
      46             : #include "libavutil/opt.h"
      47             : #include "libavutil/channel_layout.h"
      48             : #include "libavutil/parseutils.h"
      49             : #include "libavutil/samplefmt.h"
      50             : #include "libavutil/fifo.h"
      51             : #include "libavutil/hwcontext.h"
      52             : #include "libavutil/internal.h"
      53             : #include "libavutil/intreadwrite.h"
      54             : #include "libavutil/dict.h"
      55             : #include "libavutil/display.h"
      56             : #include "libavutil/mathematics.h"
      57             : #include "libavutil/pixdesc.h"
      58             : #include "libavutil/avstring.h"
      59             : #include "libavutil/libm.h"
      60             : #include "libavutil/imgutils.h"
      61             : #include "libavutil/timestamp.h"
      62             : #include "libavutil/bprint.h"
      63             : #include "libavutil/time.h"
      64             : #include "libavutil/threadmessage.h"
      65             : #include "libavcodec/mathops.h"
      66             : #include "libavformat/os_support.h"
      67             : 
      68             : # include "libavfilter/avfilter.h"
      69             : # include "libavfilter/buffersrc.h"
      70             : # include "libavfilter/buffersink.h"
      71             : 
      72             : #if HAVE_SYS_RESOURCE_H
      73             : #include <sys/time.h>
      74             : #include <sys/types.h>
      75             : #include <sys/resource.h>
      76             : #elif HAVE_GETPROCESSTIMES
      77             : #include <windows.h>
      78             : #endif
      79             : #if HAVE_GETPROCESSMEMORYINFO
      80             : #include <windows.h>
      81             : #include <psapi.h>
      82             : #endif
      83             : #if HAVE_SETCONSOLECTRLHANDLER
      84             : #include <windows.h>
      85             : #endif
      86             : 
      87             : 
      88             : #if HAVE_SYS_SELECT_H
      89             : #include <sys/select.h>
      90             : #endif
      91             : 
      92             : #if HAVE_TERMIOS_H
      93             : #include <fcntl.h>
      94             : #include <sys/ioctl.h>
      95             : #include <sys/time.h>
      96             : #include <termios.h>
      97             : #elif HAVE_KBHIT
      98             : #include <conio.h>
      99             : #endif
     100             : 
     101             : #if HAVE_PTHREADS
     102             : #include <pthread.h>
     103             : #endif
     104             : 
     105             : #include <time.h>
     106             : 
     107             : #include "ffmpeg.h"
     108             : #include "cmdutils.h"
     109             : 
     110             : #include "libavutil/avassert.h"
     111             : 
     112             : const char program_name[] = "ffmpeg";
     113             : const int program_birth_year = 2000;
     114             : 
     115             : static FILE *vstats_file;
     116             : 
     117             : const char *const forced_keyframes_const_names[] = {
     118             :     "n",
     119             :     "n_forced",
     120             :     "prev_forced_n",
     121             :     "prev_forced_t",
     122             :     "t",
     123             :     NULL
     124             : };
     125             : 
     126             : static void do_video_stats(OutputStream *ost, int frame_size);
     127             : static int64_t getutime(void);
     128             : static int64_t getmaxrss(void);
     129             : static int ifilter_has_all_input_formats(FilterGraph *fg);
     130             : 
     131             : static int run_as_daemon  = 0;
     132             : static int nb_frames_dup = 0;
     133             : static unsigned dup_warning = 1000;
     134             : static int nb_frames_drop = 0;
     135             : static int64_t decode_error_stat[2];
     136             : 
     137             : static int want_sdp = 1;
     138             : 
     139             : static int current_time;
     140             : AVIOContext *progress_avio = NULL;
     141             : 
     142             : static uint8_t *subtitle_out;
     143             : 
     144             : InputStream **input_streams = NULL;
     145             : int        nb_input_streams = 0;
     146             : InputFile   **input_files   = NULL;
     147             : int        nb_input_files   = 0;
     148             : 
     149             : OutputStream **output_streams = NULL;
     150             : int         nb_output_streams = 0;
     151             : OutputFile   **output_files   = NULL;
     152             : int         nb_output_files   = 0;
     153             : 
     154             : FilterGraph **filtergraphs;
     155             : int        nb_filtergraphs;
     156             : 
     157             : #if HAVE_TERMIOS_H
     158             : 
     159             : /* init terminal so that we can grab keys */
     160             : static struct termios oldtty;
     161             : static int restore_tty;
     162             : #endif
     163             : 
     164             : #if HAVE_PTHREADS
     165             : static void free_input_threads(void);
     166             : #endif
     167             : 
     168             : /* sub2video hack:
     169             :    Convert subtitles to video with alpha to insert them in filter graphs.
     170             :    This is a temporary solution until libavfilter gets real subtitles support.
     171             :  */
     172             : 
     173          90 : static int sub2video_get_blank_frame(InputStream *ist)
     174             : {
     175             :     int ret;
     176          90 :     AVFrame *frame = ist->sub2video.frame;
     177             : 
     178          90 :     av_frame_unref(frame);
     179          90 :     ist->sub2video.frame->width  = ist->dec_ctx->width  ? ist->dec_ctx->width  : ist->sub2video.w;
     180          90 :     ist->sub2video.frame->height = ist->dec_ctx->height ? ist->dec_ctx->height : ist->sub2video.h;
     181          90 :     ist->sub2video.frame->format = AV_PIX_FMT_RGB32;
     182          90 :     if ((ret = av_frame_get_buffer(frame, 32)) < 0)
     183           0 :         return ret;
     184          90 :     memset(frame->data[0], 0, frame->height * frame->linesize[0]);
     185          90 :     return 0;
     186             : }
     187             : 
     188          44 : static void sub2video_copy_rect(uint8_t *dst, int dst_linesize, int w, int h,
     189             :                                 AVSubtitleRect *r)
     190             : {
     191             :     uint32_t *pal, *dst2;
     192             :     uint8_t *src, *src2;
     193             :     int x, y;
     194             : 
     195          44 :     if (r->type != SUBTITLE_BITMAP) {
     196           0 :         av_log(NULL, AV_LOG_WARNING, "sub2video: non-bitmap subtitle\n");
     197           0 :         return;
     198             :     }
     199          44 :     if (r->x < 0 || r->x + r->w > w || r->y < 0 || r->y + r->h > h) {
     200           0 :         av_log(NULL, AV_LOG_WARNING, "sub2video: rectangle (%d %d %d %d) overflowing %d %d\n",
     201             :             r->x, r->y, r->w, r->h, w, h
     202             :         );
     203           0 :         return;
     204             :     }
     205             : 
     206          44 :     dst += r->y * dst_linesize + r->x * 4;
     207          44 :     src = r->data[0];
     208          44 :     pal = (uint32_t *)r->data[1];
     209        1642 :     for (y = 0; y < r->h; y++) {
     210        1598 :         dst2 = (uint32_t *)dst;
     211        1598 :         src2 = src;
     212      480325 :         for (x = 0; x < r->w; x++)
     213      478727 :             *(dst2++) = pal[*(src2++)];
     214        1598 :         dst += dst_linesize;
     215        1598 :         src += r->linesize[0];
     216             :     }
     217             : }
     218             : 
     219         335 : static void sub2video_push_ref(InputStream *ist, int64_t pts)
     220             : {
     221         335 :     AVFrame *frame = ist->sub2video.frame;
     222             :     int i;
     223             :     int ret;
     224             : 
     225             :     av_assert1(frame->data[0]);
     226         335 :     ist->sub2video.last_pts = frame->pts = pts;
     227         670 :     for (i = 0; i < ist->nb_filters; i++) {
     228         335 :         ret = av_buffersrc_add_frame_flags(ist->filters[i]->filter, frame,
     229             :                                            AV_BUFFERSRC_FLAG_KEEP_REF |
     230             :                                            AV_BUFFERSRC_FLAG_PUSH);
     231         335 :         if (ret != AVERROR_EOF && ret < 0)
     232           0 :             av_log(NULL, AV_LOG_WARNING, "Error while add the frame to buffer source(%s).\n",
     233           0 :                    av_err2str(ret));
     234             :     }
     235         335 : }
     236             : 
     237         119 : void sub2video_update(InputStream *ist, AVSubtitle *sub)
     238             : {
     239         119 :     AVFrame *frame = ist->sub2video.frame;
     240             :     int8_t *dst;
     241             :     int     dst_linesize;
     242             :     int num_rects, i;
     243             :     int64_t pts, end_pts;
     244             : 
     245         119 :     if (!frame)
     246          29 :         return;
     247          90 :     if (sub) {
     248          44 :         pts       = av_rescale_q(sub->pts + sub->start_display_time * 1000LL,
     249          44 :                                  AV_TIME_BASE_Q, ist->st->time_base);
     250          44 :         end_pts   = av_rescale_q(sub->pts + sub->end_display_time   * 1000LL,
     251          44 :                                  AV_TIME_BASE_Q, ist->st->time_base);
     252          44 :         num_rects = sub->num_rects;
     253             :     } else {
     254          46 :         pts       = ist->sub2video.end_pts;
     255          46 :         end_pts   = INT64_MAX;
     256          46 :         num_rects = 0;
     257             :     }
     258          90 :     if (sub2video_get_blank_frame(ist) < 0) {
     259           0 :         av_log(ist->dec_ctx, AV_LOG_ERROR,
     260             :                "Impossible to get a blank canvas.\n");
     261           0 :         return;
     262             :     }
     263          90 :     dst          = frame->data    [0];
     264          90 :     dst_linesize = frame->linesize[0];
     265         134 :     for (i = 0; i < num_rects; i++)
     266          44 :         sub2video_copy_rect(dst, dst_linesize, frame->width, frame->height, sub->rects[i]);
     267          90 :     sub2video_push_ref(ist, pts);
     268          90 :     ist->sub2video.end_pts = end_pts;
     269             : }
     270             : 
     271      387220 : static void sub2video_heartbeat(InputStream *ist, int64_t pts)
     272             : {
     273      387220 :     InputFile *infile = input_files[ist->file_index];
     274             :     int i, j, nb_reqs;
     275             :     int64_t pts2;
     276             : 
     277             :     /* When a frame is read from a file, examine all sub2video streams in
     278             :        the same file and send the sub2video frame again. Otherwise, decoded
     279             :        video frames could be accumulating in the filter graph while a filter
     280             :        (possibly overlay) is desperately waiting for a subtitle frame. */
     281      813076 :     for (i = 0; i < infile->nb_streams; i++) {
     282      425856 :         InputStream *ist2 = input_streams[infile->ist_index + i];
     283      425856 :         if (!ist2->sub2video.frame)
     284      424967 :             continue;
     285             :         /* subtitles seem to be usually muxed ahead of other streams;
     286             :            if not, subtracting a larger time here is necessary */
     287         889 :         pts2 = av_rescale_q(pts, ist->st->time_base, ist2->st->time_base) - 1;
     288             :         /* do not send the heartbeat frame if the subtitle is already ahead */
     289         889 :         if (pts2 <= ist2->sub2video.last_pts)
     290           0 :             continue;
     291         889 :         if (pts2 >= ist2->sub2video.end_pts || !ist2->sub2video.frame->data[0])
     292          44 :             sub2video_update(ist2, NULL);
     293        1778 :         for (j = 0, nb_reqs = 0; j < ist2->nb_filters; j++)
     294         889 :             nb_reqs += av_buffersrc_get_nb_failed_requests(ist2->filters[j]->filter);
     295         889 :         if (nb_reqs)
     296         245 :             sub2video_push_ref(ist2, pts2);
     297             :     }
     298      387220 : }
     299             : 
     300          31 : static void sub2video_flush(InputStream *ist)
     301             : {
     302             :     int i;
     303             :     int ret;
     304             : 
     305          31 :     if (ist->sub2video.end_pts < INT64_MAX)
     306          31 :         sub2video_update(ist, NULL);
     307          33 :     for (i = 0; i < ist->nb_filters; i++) {
     308           2 :         ret = av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
     309           2 :         if (ret != AVERROR_EOF && ret < 0)
     310           0 :             av_log(NULL, AV_LOG_WARNING, "Flush the frame error.\n");
     311             :     }
     312          31 : }
     313             : 
     314             : /* end of sub2video hack */
     315             : 
     316       10823 : static void term_exit_sigsafe(void)
     317             : {
     318             : #if HAVE_TERMIOS_H
     319       10823 :     if(restore_tty)
     320           2 :         tcsetattr (0, TCSANOW, &oldtty);
     321             : #endif
     322       10823 : }
     323             : 
     324       10823 : void term_exit(void)
     325             : {
     326       10823 :     av_log(NULL, AV_LOG_QUIET, "%s", "");
     327       10823 :     term_exit_sigsafe();
     328       10823 : }
     329             : 
     330             : static volatile int received_sigterm = 0;
     331             : static volatile int received_nb_signals = 0;
     332             : static atomic_int transcode_init_done = ATOMIC_VAR_INIT(0);
     333             : static volatile int ffmpeg_exited = 0;
     334             : static int main_return_code = 0;
     335             : 
     336             : static void
     337           0 : sigterm_handler(int sig)
     338             : {
     339             :     int ret;
     340           0 :     received_sigterm = sig;
     341           0 :     received_nb_signals++;
     342           0 :     term_exit_sigsafe();
     343           0 :     if(received_nb_signals > 3) {
     344           0 :         ret = write(2/*STDERR_FILENO*/, "Received > 3 system signals, hard exiting\n",
     345             :                     strlen("Received > 3 system signals, hard exiting\n"));
     346             :         if (ret < 0) { /* Do nothing */ };
     347           0 :         exit(123);
     348             :     }
     349           0 : }
     350             : 
     351             : #if HAVE_SETCONSOLECTRLHANDLER
     352             : static BOOL WINAPI CtrlHandler(DWORD fdwCtrlType)
     353             : {
     354             :     av_log(NULL, AV_LOG_DEBUG, "\nReceived windows signal %ld\n", fdwCtrlType);
     355             : 
     356             :     switch (fdwCtrlType)
     357             :     {
     358             :     case CTRL_C_EVENT:
     359             :     case CTRL_BREAK_EVENT:
     360             :         sigterm_handler(SIGINT);
     361             :         return TRUE;
     362             : 
     363             :     case CTRL_CLOSE_EVENT:
     364             :     case CTRL_LOGOFF_EVENT:
     365             :     case CTRL_SHUTDOWN_EVENT:
     366             :         sigterm_handler(SIGTERM);
     367             :         /* Basically, with these 3 events, when we return from this method the
     368             :            process is hard terminated, so stall as long as we need to
     369             :            to try and let the main thread(s) clean up and gracefully terminate
     370             :            (we have at most 5 seconds, but should be done far before that). */
     371             :         while (!ffmpeg_exited) {
     372             :             Sleep(0);
     373             :         }
     374             :         return TRUE;
     375             : 
     376             :     default:
     377             :         av_log(NULL, AV_LOG_ERROR, "Received unknown windows signal %ld\n", fdwCtrlType);
     378             :         return FALSE;
     379             :     }
     380             : }
     381             : #endif
     382             : 
     383        5411 : void term_init(void)
     384             : {
     385             : #if HAVE_TERMIOS_H
     386        5411 :     if (!run_as_daemon && stdin_interaction) {
     387             :         struct termios tty;
     388          15 :         if (tcgetattr (0, &tty) == 0) {
     389           1 :             oldtty = tty;
     390           1 :             restore_tty = 1;
     391             : 
     392           1 :             tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
     393             :                              |INLCR|IGNCR|ICRNL|IXON);
     394           1 :             tty.c_oflag |= OPOST;
     395           1 :             tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
     396           1 :             tty.c_cflag &= ~(CSIZE|PARENB);
     397           1 :             tty.c_cflag |= CS8;
     398           1 :             tty.c_cc[VMIN] = 1;
     399           1 :             tty.c_cc[VTIME] = 0;
     400             : 
     401           1 :             tcsetattr (0, TCSANOW, &tty);
     402             :         }
     403          15 :         signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
     404             :     }
     405             : #endif
     406             : 
     407        5411 :     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
     408        5411 :     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
     409             : #ifdef SIGXCPU
     410        5411 :     signal(SIGXCPU, sigterm_handler);
     411             : #endif
     412             : #if HAVE_SETCONSOLECTRLHANDLER
     413             :     SetConsoleCtrlHandler((PHANDLER_ROUTINE) CtrlHandler, TRUE);
     414             : #endif
     415        5411 : }
     416             : 
     417             : /* read a key without blocking */
     418          41 : static int read_key(void)
     419             : {
     420             :     unsigned char ch;
     421             : #if HAVE_TERMIOS_H
     422          41 :     int n = 1;
     423             :     struct timeval tv;
     424             :     fd_set rfds;
     425             : 
     426          41 :     FD_ZERO(&rfds);
     427          41 :     FD_SET(0, &rfds);
     428          41 :     tv.tv_sec = 0;
     429          41 :     tv.tv_usec = 0;
     430          41 :     n = select(1, &rfds, NULL, NULL, &tv);
     431          41 :     if (n > 0) {
     432          34 :         n = read(0, &ch, 1);
     433          34 :         if (n == 1)
     434           0 :             return ch;
     435             : 
     436          34 :         return n;
     437             :     }
     438             : #elif HAVE_KBHIT
     439             : #    if HAVE_PEEKNAMEDPIPE
     440             :     static int is_pipe;
     441             :     static HANDLE input_handle;
     442             :     DWORD dw, nchars;
     443             :     if(!input_handle){
     444             :         input_handle = GetStdHandle(STD_INPUT_HANDLE);
     445             :         is_pipe = !GetConsoleMode(input_handle, &dw);
     446             :     }
     447             : 
     448             :     if (is_pipe) {
     449             :         /* When running under a GUI, you will end here. */
     450             :         if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL)) {
     451             :             // input pipe may have been closed by the program that ran ffmpeg
     452             :             return -1;
     453             :         }
     454             :         //Read it
     455             :         if(nchars != 0) {
     456             :             read(0, &ch, 1);
     457             :             return ch;
     458             :         }else{
     459             :             return -1;
     460             :         }
     461             :     }
     462             : #    endif
     463             :     if(kbhit())
     464             :         return(getch());
     465             : #endif
     466           7 :     return -1;
     467             : }
     468             : 
     469      546086 : static int decode_interrupt_cb(void *ctx)
     470             : {
     471      546086 :     return received_nb_signals > atomic_load(&transcode_init_done);
     472             : }
     473             : 
     474             : const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
     475             : 
     476        5412 : static void ffmpeg_cleanup(int ret)
     477             : {
     478             :     int i, j;
     479             : 
     480        5412 :     if (do_benchmark) {
     481           0 :         int maxrss = getmaxrss() / 1024;
     482           0 :         av_log(NULL, AV_LOG_INFO, "bench: maxrss=%ikB\n", maxrss);
     483             :     }
     484             : 
     485       10709 :     for (i = 0; i < nb_filtergraphs; i++) {
     486        5297 :         FilterGraph *fg = filtergraphs[i];
     487        5297 :         avfilter_graph_free(&fg->graph);
     488       10592 :         for (j = 0; j < fg->nb_inputs; j++) {
     489       10590 :             while (av_fifo_size(fg->inputs[j]->frame_queue)) {
     490             :                 AVFrame *frame;
     491           0 :                 av_fifo_generic_read(fg->inputs[j]->frame_queue, &frame,
     492             :                                      sizeof(frame), NULL);
     493           0 :                 av_frame_free(&frame);
     494             :             }
     495        5295 :             av_fifo_freep(&fg->inputs[j]->frame_queue);
     496        5295 :             if (fg->inputs[j]->ist->sub2video.sub_queue) {
     497           0 :                 while (av_fifo_size(fg->inputs[j]->ist->sub2video.sub_queue)) {
     498             :                     AVSubtitle sub;
     499           0 :                     av_fifo_generic_read(fg->inputs[j]->ist->sub2video.sub_queue,
     500             :                                          &sub, sizeof(sub), NULL);
     501           0 :                     avsubtitle_free(&sub);
     502             :                 }
     503           0 :                 av_fifo_freep(&fg->inputs[j]->ist->sub2video.sub_queue);
     504             :             }
     505        5295 :             av_buffer_unref(&fg->inputs[j]->hw_frames_ctx);
     506        5295 :             av_freep(&fg->inputs[j]->name);
     507        5295 :             av_freep(&fg->inputs[j]);
     508             :         }
     509        5297 :         av_freep(&fg->inputs);
     510       10596 :         for (j = 0; j < fg->nb_outputs; j++) {
     511        5299 :             av_freep(&fg->outputs[j]->name);
     512        5299 :             av_freep(&fg->outputs[j]->formats);
     513        5299 :             av_freep(&fg->outputs[j]->channel_layouts);
     514        5299 :             av_freep(&fg->outputs[j]->sample_rates);
     515        5299 :             av_freep(&fg->outputs[j]);
     516             :         }
     517        5297 :         av_freep(&fg->outputs);
     518        5297 :         av_freep(&fg->graph_desc);
     519             : 
     520        5297 :         av_freep(&filtergraphs[i]);
     521             :     }
     522        5412 :     av_freep(&filtergraphs);
     523             : 
     524        5412 :     av_freep(&subtitle_out);
     525             : 
     526             :     /* close files */
     527       10824 :     for (i = 0; i < nb_output_files; i++) {
     528        5412 :         OutputFile *of = output_files[i];
     529             :         AVFormatContext *s;
     530        5412 :         if (!of)
     531           0 :             continue;
     532        5412 :         s = of->ctx;
     533        5412 :         if (s && s->oformat && !(s->oformat->flags & AVFMT_NOFILE))
     534        5367 :             avio_closep(&s->pb);
     535        5412 :         avformat_free_context(s);
     536        5412 :         av_dict_free(&of->opts);
     537             : 
     538        5412 :         av_freep(&output_files[i]);
     539             :     }
     540       10964 :     for (i = 0; i < nb_output_streams; i++) {
     541        5552 :         OutputStream *ost = output_streams[i];
     542             : 
     543        5552 :         if (!ost)
     544           0 :             continue;
     545             : 
     546        5595 :         for (j = 0; j < ost->nb_bitstream_filters; j++)
     547          43 :             av_bsf_free(&ost->bsf_ctx[j]);
     548        5552 :         av_freep(&ost->bsf_ctx);
     549             : 
     550        5552 :         av_frame_free(&ost->filtered_frame);
     551        5552 :         av_frame_free(&ost->last_frame);
     552        5552 :         av_dict_free(&ost->encoder_opts);
     553             : 
     554        5552 :         av_parser_close(ost->parser);
     555        5552 :         avcodec_free_context(&ost->parser_avctx);
     556             : 
     557        5552 :         av_freep(&ost->forced_keyframes);
     558        5552 :         av_expr_free(ost->forced_keyframes_pexpr);
     559        5552 :         av_freep(&ost->avfilter);
     560        5552 :         av_freep(&ost->logfile_prefix);
     561             : 
     562        5552 :         av_freep(&ost->audio_channels_map);
     563        5552 :         ost->audio_channels_mapped = 0;
     564             : 
     565        5552 :         av_dict_free(&ost->sws_dict);
     566             : 
     567        5552 :         avcodec_free_context(&ost->enc_ctx);
     568        5552 :         avcodec_parameters_free(&ost->ref_par);
     569             : 
     570        5552 :         if (ost->muxing_queue) {
     571       11104 :             while (av_fifo_size(ost->muxing_queue)) {
     572             :                 AVPacket pkt;
     573           0 :                 av_fifo_generic_read(ost->muxing_queue, &pkt, sizeof(pkt), NULL);
     574           0 :                 av_packet_unref(&pkt);
     575             :             }
     576        5552 :             av_fifo_freep(&ost->muxing_queue);
     577             :         }
     578             : 
     579        5552 :         av_freep(&output_streams[i]);
     580             :     }
     581             : #if HAVE_PTHREADS
     582        5412 :     free_input_threads();
     583             : #endif
     584       10870 :     for (i = 0; i < nb_input_files; i++) {
     585        5458 :         avformat_close_input(&input_files[i]->ctx);
     586        5458 :         av_freep(&input_files[i]);
     587             :     }
     588       11179 :     for (i = 0; i < nb_input_streams; i++) {
     589        5767 :         InputStream *ist = input_streams[i];
     590             : 
     591        5767 :         av_frame_free(&ist->decoded_frame);
     592        5767 :         av_frame_free(&ist->filter_frame);
     593        5767 :         av_dict_free(&ist->decoder_opts);
     594        5767 :         avsubtitle_free(&ist->prev_sub.subtitle);
     595        5767 :         av_frame_free(&ist->sub2video.frame);
     596        5767 :         av_freep(&ist->filters);
     597        5767 :         av_freep(&ist->hwaccel_device);
     598        5767 :         av_freep(&ist->dts_buffer);
     599             : 
     600        5767 :         avcodec_free_context(&ist->dec_ctx);
     601             : 
     602        5767 :         av_freep(&input_streams[i]);
     603             :     }
     604             : 
     605        5412 :     if (vstats_file) {
     606           0 :         if (fclose(vstats_file))
     607           0 :             av_log(NULL, AV_LOG_ERROR,
     608             :                    "Error closing vstats file, loss of information possible: %s\n",
     609           0 :                    av_err2str(AVERROR(errno)));
     610             :     }
     611        5412 :     av_freep(&vstats_filename);
     612             : 
     613        5412 :     av_freep(&input_streams);
     614        5412 :     av_freep(&input_files);
     615        5412 :     av_freep(&output_streams);
     616        5412 :     av_freep(&output_files);
     617             : 
     618        5412 :     uninit_opts();
     619             : 
     620        5412 :     avformat_network_deinit();
     621             : 
     622        5412 :     if (received_sigterm) {
     623           0 :         av_log(NULL, AV_LOG_INFO, "Exiting normally, received signal %d.\n",
     624             :                (int) received_sigterm);
     625        5412 :     } else if (ret && atomic_load(&transcode_init_done)) {
     626           0 :         av_log(NULL, AV_LOG_INFO, "Conversion failed!\n");
     627             :     }
     628        5412 :     term_exit();
     629        5412 :     ffmpeg_exited = 1;
     630        5412 : }
     631             : 
     632        5458 : void remove_avoptions(AVDictionary **a, AVDictionary *b)
     633             : {
     634        5458 :     AVDictionaryEntry *t = NULL;
     635             : 
     636       27984 :     while ((t = av_dict_get(b, "", t, AV_DICT_IGNORE_SUFFIX))) {
     637       17068 :         av_dict_set(a, t->key, NULL, AV_DICT_MATCH_CASE);
     638             :     }
     639        5458 : }
     640             : 
     641       16110 : void assert_avoptions(AVDictionary *m)
     642             : {
     643             :     AVDictionaryEntry *t;
     644       16110 :     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
     645           0 :         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
     646           0 :         exit_program(1);
     647             :     }
     648       16110 : }
     649             : 
     650           0 : static void abort_codec_experimental(AVCodec *c, int encoder)
     651             : {
     652           0 :     exit_program(1);
     653             : }
     654             : 
     655     2374705 : static void update_benchmark(const char *fmt, ...)
     656             : {
     657     2374705 :     if (do_benchmark_all) {
     658           0 :         int64_t t = getutime();
     659             :         va_list va;
     660             :         char buf[1024];
     661             : 
     662           0 :         if (fmt) {
     663           0 :             va_start(va, fmt);
     664           0 :             vsnprintf(buf, sizeof(buf), fmt, va);
     665           0 :             va_end(va);
     666           0 :             av_log(NULL, AV_LOG_INFO, "bench: %8"PRIu64" %s \n", t - current_time, buf);
     667             :         }
     668           0 :         current_time = t;
     669             :     }
     670     2374705 : }
     671             : 
     672           0 : static void close_all_output_streams(OutputStream *ost, OSTFinished this_stream, OSTFinished others)
     673             : {
     674             :     int i;
     675           0 :     for (i = 0; i < nb_output_streams; i++) {
     676           0 :         OutputStream *ost2 = output_streams[i];
     677           0 :         ost2->finished |= ost == ost2 ? this_stream : others;
     678             :     }
     679           0 : }
     680             : 
     681      415868 : static void write_packet(OutputFile *of, AVPacket *pkt, OutputStream *ost, int unqueue)
     682             : {
     683      415868 :     AVFormatContext *s = of->ctx;
     684      415868 :     AVStream *st = ost->st;
     685             :     int ret;
     686             : 
     687             :     /*
     688             :      * Audio encoders may split the packets --  #frames in != #packets out.
     689             :      * But there is no reordering, so we can limit the number of output packets
     690             :      * by simply dropping them here.
     691             :      * Counting encoded video frames needs to be done separately because of
     692             :      * reordering, see do_video_out().
     693             :      * Do not count the packet when unqueued because it has been counted when queued.
     694             :      */
     695      415868 :     if (!(st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && ost->encoding_needed) && !unqueue) {
     696      319285 :         if (ost->frame_number >= ost->max_frames) {
     697         313 :             av_packet_unref(pkt);
     698         313 :             return;
     699             :         }
     700      318972 :         ost->frame_number++;
     701             :     }
     702             : 
     703      415555 :     if (!of->header_written) {
     704         277 :         AVPacket tmp_pkt = {0};
     705             :         /* the muxer is not initialized yet, buffer the packet */
     706         277 :         if (!av_fifo_space(ost->muxing_queue)) {
     707          16 :             int new_size = FFMIN(2 * av_fifo_size(ost->muxing_queue),
     708             :                                  ost->max_muxing_queue_size);
     709          16 :             if (new_size <= av_fifo_size(ost->muxing_queue)) {
     710           0 :                 av_log(NULL, AV_LOG_ERROR,
     711             :                        "Too many packets buffered for output stream %d:%d.\n",
     712           0 :                        ost->file_index, ost->st->index);
     713           0 :                 exit_program(1);
     714             :             }
     715          16 :             ret = av_fifo_realloc2(ost->muxing_queue, new_size);
     716          16 :             if (ret < 0)
     717           0 :                 exit_program(1);
     718             :         }
     719         277 :         ret = av_packet_ref(&tmp_pkt, pkt);
     720         277 :         if (ret < 0)
     721           0 :             exit_program(1);
     722         277 :         av_fifo_generic_write(ost->muxing_queue, &tmp_pkt, sizeof(tmp_pkt), NULL);
     723         277 :         av_packet_unref(pkt);
     724         277 :         return;
     725             :     }
     726             : 
     727      807228 :     if ((st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && video_sync_method == VSYNC_DROP) ||
     728      701510 :         (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO && audio_sync_method < 0))
     729       23328 :         pkt->pts = pkt->dts = AV_NOPTS_VALUE;
     730             : 
     731      415278 :     if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
     732             :         int i;
     733      104593 :         uint8_t *sd = av_packet_get_side_data(pkt, AV_PKT_DATA_QUALITY_STATS,
     734             :                                               NULL);
     735      104593 :         ost->quality = sd ? AV_RL32(sd) : -1;
     736      104593 :         ost->pict_type = sd ? sd[4] : AV_PICTURE_TYPE_NONE;
     737             : 
     738      522965 :         for (i = 0; i<FF_ARRAY_ELEMS(ost->error); i++) {
     739      418372 :             if (sd && i < sd[5])
     740           0 :                 ost->error[i] = AV_RL64(sd + 8 + 8*i);
     741             :             else
     742      418372 :                 ost->error[i] = -1;
     743             :         }
     744             : 
     745      104593 :         if (ost->frame_rate.num && ost->is_cfr) {
     746        9094 :             if (pkt->duration > 0)
     747           0 :                 av_log(NULL, AV_LOG_WARNING, "Overriding packet duration by frame rate, this should not happen\n");
     748        9094 :             pkt->duration = av_rescale_q(1, av_inv_q(ost->frame_rate),
     749             :                                          ost->mux_timebase);
     750             :         }
     751             :     }
     752             : 
     753      415278 :     av_packet_rescale_ts(pkt, ost->mux_timebase, ost->st->time_base);
     754             : 
     755      415278 :     if (!(s->oformat->flags & AVFMT_NOTIMESTAMPS)) {
     756      334820 :         if (pkt->dts != AV_NOPTS_VALUE &&
     757      310973 :             pkt->pts != AV_NOPTS_VALUE &&
     758      155227 :             pkt->dts > pkt->pts) {
     759           0 :             av_log(s, AV_LOG_WARNING, "Invalid DTS: %"PRId64" PTS: %"PRId64" in output stream %d:%d, replacing by guess\n",
     760             :                    pkt->dts, pkt->pts,
     761           0 :                    ost->file_index, ost->st->index);
     762           0 :             pkt->pts =
     763           0 :             pkt->dts = pkt->pts + pkt->dts + ost->last_mux_dts + 1
     764           0 :                      - FFMIN3(pkt->pts, pkt->dts, ost->last_mux_dts + 1)
     765           0 :                      - FFMAX3(pkt->pts, pkt->dts, ost->last_mux_dts + 1);
     766             :         }
     767      357540 :         if ((st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO || st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) &&
     768      333604 :             pkt->dts != AV_NOPTS_VALUE &&
     769      310276 :             !(st->codecpar->codec_id == AV_CODEC_ID_VP9 && ost->stream_copy) &&
     770      155088 :             ost->last_mux_dts != AV_NOPTS_VALUE) {
     771      151060 :             int64_t max = ost->last_mux_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT);
     772      151060 :             if (pkt->dts < max) {
     773           0 :                 int loglevel = max - pkt->dts > 2 || st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO ? AV_LOG_WARNING : AV_LOG_DEBUG;
     774           0 :                 av_log(s, loglevel, "Non-monotonous DTS in output stream "
     775             :                        "%d:%d; previous: %"PRId64", current: %"PRId64"; ",
     776           0 :                        ost->file_index, ost->st->index, ost->last_mux_dts, pkt->dts);
     777           0 :                 if (exit_on_error) {
     778           0 :                     av_log(NULL, AV_LOG_FATAL, "aborting.\n");
     779           0 :                     exit_program(1);
     780             :                 }
     781           0 :                 av_log(s, loglevel, "changing to %"PRId64". This may result "
     782             :                        "in incorrect timestamps in the output file.\n",
     783             :                        max);
     784           0 :                 if (pkt->pts >= pkt->dts)
     785           0 :                     pkt->pts = FFMAX(pkt->pts, max);
     786           0 :                 pkt->dts = max;
     787             :             }
     788             :         }
     789             :     }
     790      415278 :     ost->last_mux_dts = pkt->dts;
     791             : 
     792      415278 :     ost->data_size += pkt->size;
     793      415278 :     ost->packets_written++;
     794             : 
     795      415278 :     pkt->stream_index = ost->index;
     796             : 
     797      415278 :     if (debug_ts) {
     798           0 :         av_log(NULL, AV_LOG_INFO, "muxer <- type:%s "
     799             :                 "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s size:%d\n",
     800           0 :                 av_get_media_type_string(ost->enc_ctx->codec_type),
     801           0 :                 av_ts2str(pkt->pts), av_ts2timestr(pkt->pts, &ost->st->time_base),
     802           0 :                 av_ts2str(pkt->dts), av_ts2timestr(pkt->dts, &ost->st->time_base),
     803             :                 pkt->size
     804             :               );
     805             :     }
     806             : 
     807      415278 :     ret = av_interleaved_write_frame(s, pkt);
     808      415278 :     if (ret < 0) {
     809           0 :         print_error("av_interleaved_write_frame()", ret);
     810           0 :         main_return_code = 1;
     811           0 :         close_all_output_streams(ost, MUXER_FINISHED | ENCODER_FINISHED, ENCODER_FINISHED);
     812             :     }
     813      415278 :     av_packet_unref(pkt);
     814             : }
     815             : 
     816        5311 : static void close_output_stream(OutputStream *ost)
     817             : {
     818        5311 :     OutputFile *of = output_files[ost->file_index];
     819             : 
     820        5311 :     ost->finished |= ENCODER_FINISHED;
     821        5311 :     if (of->shortest) {
     822           0 :         int64_t end = av_rescale_q(ost->sync_opts - ost->first_pts, ost->enc_ctx->time_base, AV_TIME_BASE_Q);
     823           0 :         of->recording_time = FFMIN(of->recording_time, end);
     824             :     }
     825        5311 : }
     826             : 
     827             : /*
     828             :  * Send a single packet to the output, applying any bitstream filters
     829             :  * associated with the output stream.  This may result in any number
     830             :  * of packets actually being written, depending on what bitstream
     831             :  * filters are applied.  The supplied packet is consumed and will be
     832             :  * blank (as if newly-allocated) when this function returns.
     833             :  *
     834             :  * If eof is set, instead indicate EOF to all bitstream filters and
     835             :  * therefore flush any delayed packets to the output.  A blank packet
     836             :  * must be supplied in this case.
     837             :  */
     838      419913 : static void output_packet(OutputFile *of, AVPacket *pkt,
     839             :                           OutputStream *ost, int eof)
     840             : {
     841      419913 :     int ret = 0;
     842             : 
     843             :     /* apply the output bitstream filters, if any */
     844      419913 :     if (ost->nb_bitstream_filters) {
     845             :         int idx;
     846             : 
     847        4756 :         ret = av_bsf_send_packet(ost->bsf_ctx[0], eof ? NULL : pkt);
     848        4756 :         if (ret < 0)
     849           0 :             goto finish;
     850             : 
     851        4756 :         eof = 0;
     852        4756 :         idx = 1;
     853       19016 :         while (idx) {
     854             :             /* get a packet from the previous filter up the chain */
     855        9508 :             ret = av_bsf_receive_packet(ost->bsf_ctx[idx - 1], pkt);
     856        9508 :             if (ret == AVERROR(EAGAIN)) {
     857        4752 :                 ret = 0;
     858        4752 :                 idx--;
     859        4752 :                 continue;
     860        4756 :             } else if (ret == AVERROR_EOF) {
     861           3 :                 eof = 1;
     862        4753 :             } else if (ret < 0)
     863           1 :                 goto finish;
     864             : 
     865             :             /* send it to the next filter down the chain or to the muxer */
     866        4755 :             if (idx < ost->nb_bitstream_filters) {
     867           0 :                 ret = av_bsf_send_packet(ost->bsf_ctx[idx], eof ? NULL : pkt);
     868           0 :                 if (ret < 0)
     869           0 :                     goto finish;
     870           0 :                 idx++;
     871           0 :                 eof = 0;
     872        4755 :             } else if (eof)
     873           3 :                 goto finish;
     874             :             else
     875        4752 :                 write_packet(of, pkt, ost, 0);
     876             :         }
     877      415157 :     } else if (!eof)
     878      410839 :         write_packet(of, pkt, ost, 0);
     879             : 
     880      424231 : finish:
     881      419913 :     if (ret < 0 && ret != AVERROR_EOF) {
     882           1 :         av_log(NULL, AV_LOG_ERROR, "Error applying bitstream filters to an output "
     883             :                "packet for stream #%d:%d.\n", ost->file_index, ost->index);
     884           1 :         if(exit_on_error)
     885           0 :             exit_program(1);
     886             :     }
     887      419913 : }
     888             : 
     889      394884 : static int check_recording_time(OutputStream *ost)
     890             : {
     891      394884 :     OutputFile *of = output_files[ost->file_index];
     892             : 
     893      401029 :     if (of->recording_time != INT64_MAX &&
     894        6145 :         av_compare_ts(ost->sync_opts - ost->first_pts, ost->enc_ctx->time_base, of->recording_time,
     895        6145 :                       AV_TIME_BASE_Q) >= 0) {
     896           1 :         close_output_stream(ost);
     897           1 :         return 0;
     898             :     }
     899      394883 :     return 1;
     900             : }
     901             : 
     902      297982 : static void do_audio_out(OutputFile *of, OutputStream *ost,
     903             :                          AVFrame *frame)
     904             : {
     905      297982 :     AVCodecContext *enc = ost->enc_ctx;
     906             :     AVPacket pkt;
     907             :     int ret;
     908             : 
     909      297982 :     av_init_packet(&pkt);
     910      297982 :     pkt.data = NULL;
     911      297982 :     pkt.size = 0;
     912             : 
     913      297982 :     if (!check_recording_time(ost))
     914           0 :         return;
     915             : 
     916      297982 :     if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
     917           0 :         frame->pts = ost->sync_opts;
     918      297982 :     ost->sync_opts = frame->pts + frame->nb_samples;
     919      297982 :     ost->samples_encoded += frame->nb_samples;
     920      297982 :     ost->frames_encoded++;
     921             : 
     922      297982 :     av_assert0(pkt.size || !pkt.data);
     923      297982 :     update_benchmark(NULL);
     924      297982 :     if (debug_ts) {
     925           0 :         av_log(NULL, AV_LOG_INFO, "encoder <- type:audio "
     926             :                "frame_pts:%s frame_pts_time:%s time_base:%d/%d\n",
     927           0 :                av_ts2str(frame->pts), av_ts2timestr(frame->pts, &enc->time_base),
     928             :                enc->time_base.num, enc->time_base.den);
     929             :     }
     930             : 
     931      297982 :     ret = avcodec_send_frame(enc, frame);
     932      297982 :     if (ret < 0)
     933           0 :         goto error;
     934             : 
     935             :     while (1) {
     936      291825 :         ret = avcodec_receive_packet(enc, &pkt);
     937      589807 :         if (ret == AVERROR(EAGAIN))
     938      297982 :             break;
     939      291825 :         if (ret < 0)
     940           0 :             goto error;
     941             : 
     942      291825 :         update_benchmark("encode_audio %d.%d", ost->file_index, ost->index);
     943             : 
     944      291825 :         av_packet_rescale_ts(&pkt, enc->time_base, ost->mux_timebase);
     945             : 
     946      291825 :         if (debug_ts) {
     947           0 :             av_log(NULL, AV_LOG_INFO, "encoder -> type:audio "
     948             :                    "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
     949           0 :                    av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &enc->time_base),
     950           0 :                    av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &enc->time_base));
     951             :         }
     952             : 
     953      291825 :         output_packet(of, &pkt, ost, 0);
     954             :     }
     955             : 
     956      297982 :     return;
     957           0 : error:
     958           0 :     av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
     959           0 :     exit_program(1);
     960             : }
     961             : 
     962         595 : static void do_subtitle_out(OutputFile *of,
     963             :                             OutputStream *ost,
     964             :                             AVSubtitle *sub)
     965             : {
     966         595 :     int subtitle_out_max_size = 1024 * 1024;
     967             :     int subtitle_out_size, nb, i;
     968             :     AVCodecContext *enc;
     969             :     AVPacket pkt;
     970             :     int64_t pts;
     971             : 
     972         595 :     if (sub->pts == AV_NOPTS_VALUE) {
     973           0 :         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
     974           0 :         if (exit_on_error)
     975           0 :             exit_program(1);
     976           0 :         return;
     977             :     }
     978             : 
     979         595 :     enc = ost->enc_ctx;
     980             : 
     981         595 :     if (!subtitle_out) {
     982          30 :         subtitle_out = av_malloc(subtitle_out_max_size);
     983          30 :         if (!subtitle_out) {
     984           0 :             av_log(NULL, AV_LOG_FATAL, "Failed to allocate subtitle_out\n");
     985           0 :             exit_program(1);
     986             :         }
     987             :     }
     988             : 
     989             :     /* Note: DVB subtitle need one packet to draw them and one other
     990             :        packet to clear them */
     991             :     /* XXX: signal it in the codec context ? */
     992         595 :     if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE)
     993           0 :         nb = 2;
     994             :     else
     995         595 :         nb = 1;
     996             : 
     997             :     /* shift timestamp to honor -ss and make check_recording_time() work with -t */
     998         595 :     pts = sub->pts;
     999         595 :     if (output_files[ost->file_index]->start_time != AV_NOPTS_VALUE)
    1000           0 :         pts -= output_files[ost->file_index]->start_time;
    1001        1190 :     for (i = 0; i < nb; i++) {
    1002         595 :         unsigned save_num_rects = sub->num_rects;
    1003             : 
    1004         595 :         ost->sync_opts = av_rescale_q(pts, AV_TIME_BASE_Q, enc->time_base);
    1005         595 :         if (!check_recording_time(ost))
    1006           0 :             return;
    1007             : 
    1008         595 :         sub->pts = pts;
    1009             :         // start_display_time is required to be 0
    1010         595 :         sub->pts               += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
    1011         595 :         sub->end_display_time  -= sub->start_display_time;
    1012         595 :         sub->start_display_time = 0;
    1013         595 :         if (i == 1)
    1014           0 :             sub->num_rects = 0;
    1015             : 
    1016         595 :         ost->frames_encoded++;
    1017             : 
    1018         595 :         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
    1019             :                                                     subtitle_out_max_size, sub);
    1020         595 :         if (i == 1)
    1021           0 :             sub->num_rects = save_num_rects;
    1022         595 :         if (subtitle_out_size < 0) {
    1023           0 :             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
    1024           0 :             exit_program(1);
    1025             :         }
    1026             : 
    1027         595 :         av_init_packet(&pkt);
    1028         595 :         pkt.data = subtitle_out;
    1029         595 :         pkt.size = subtitle_out_size;
    1030         595 :         pkt.pts  = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->mux_timebase);
    1031         595 :         pkt.duration = av_rescale_q(sub->end_display_time, (AVRational){ 1, 1000 }, ost->mux_timebase);
    1032         595 :         if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
    1033             :             /* XXX: the pts correction is handled here. Maybe handling
    1034             :                it in the codec would be better */
    1035           0 :             if (i == 0)
    1036           0 :                 pkt.pts += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, ost->mux_timebase);
    1037             :             else
    1038           0 :                 pkt.pts += av_rescale_q(sub->end_display_time, (AVRational){ 1, 1000 }, ost->mux_timebase);
    1039             :         }
    1040         595 :         pkt.dts = pkt.pts;
    1041         595 :         output_packet(of, &pkt, ost, 0);
    1042             :     }
    1043             : }
    1044             : 
    1045       98605 : static void do_video_out(OutputFile *of,
    1046             :                          OutputStream *ost,
    1047             :                          AVFrame *next_picture,
    1048             :                          double sync_ipts)
    1049             : {
    1050             :     int ret, format_video_sync;
    1051             :     AVPacket pkt;
    1052       98605 :     AVCodecContext *enc = ost->enc_ctx;
    1053       98605 :     AVCodecParameters *mux_par = ost->st->codecpar;
    1054             :     AVRational frame_rate;
    1055             :     int nb_frames, nb0_frames, i;
    1056             :     double delta, delta0;
    1057       98605 :     double duration = 0;
    1058       98605 :     int frame_size = 0;
    1059       98605 :     InputStream *ist = NULL;
    1060       98605 :     AVFilterContext *filter = ost->filter->filter;
    1061             : 
    1062       98605 :     if (ost->source_index >= 0)
    1063       97385 :         ist = input_streams[ost->source_index];
    1064             : 
    1065       98605 :     frame_rate = av_buffersink_get_frame_rate(filter);
    1066       98605 :     if (frame_rate.num > 0 && frame_rate.den > 0)
    1067       98605 :         duration = 1/(av_q2d(frame_rate) * av_q2d(enc->time_base));
    1068             : 
    1069       98605 :     if(ist && ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE && ost->frame_rate.num)
    1070       62926 :         duration = FFMIN(duration, 1/(av_q2d(ost->frame_rate) * av_q2d(enc->time_base)));
    1071             : 
    1072      197113 :     if (!ost->filters_script &&
    1073      191029 :         !ost->filters &&
    1074       90247 :         next_picture &&
    1075       89056 :         ist &&
    1076       89056 :         lrintf(next_picture->pkt_duration * av_q2d(ist->st->time_base) / av_q2d(enc->time_base)) > 0) {
    1077       84279 :         duration = lrintf(next_picture->pkt_duration * av_q2d(ist->st->time_base) / av_q2d(enc->time_base));
    1078             :     }
    1079             : 
    1080       98605 :     if (!next_picture) {
    1081             :         //end, flushing
    1082        2336 :         nb0_frames = nb_frames = mid_pred(ost->last_nb0_frames[0],
    1083             :                                           ost->last_nb0_frames[1],
    1084             :                                           ost->last_nb0_frames[2]);
    1085             :     } else {
    1086       96269 :         delta0 = sync_ipts - ost->sync_opts; // delta0 is the "drift" between the input frame (next_picture) and where it would fall in the output.
    1087       96269 :         delta  = delta0 + duration;
    1088             : 
    1089             :         /* by default, we output a single frame */
    1090       96269 :         nb0_frames = 0; // tracks the number of times the PREVIOUS frame should be duplicated, mostly for variable framerate (VFR)
    1091       96269 :         nb_frames = 1;
    1092             : 
    1093       96269 :         format_video_sync = video_sync_method;
    1094       96269 :         if (format_video_sync == VSYNC_AUTO) {
    1095       54380 :             if(!strcmp(of->ctx->oformat->name, "avi")) {
    1096       12650 :                 format_video_sync = VSYNC_VFR;
    1097             :             } else
    1098       41730 :                 format_video_sync = (of->ctx->oformat->flags & AVFMT_VARIABLE_FPS) ? ((of->ctx->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH : VSYNC_VFR) : VSYNC_CFR;
    1099       54380 :             if (   ist
    1100       53189 :                 && format_video_sync == VSYNC_CFR
    1101        8744 :                 && input_files[ist->file_index]->ctx->nb_streams == 1
    1102        7699 :                 && input_files[ist->file_index]->input_ts_offset == 0) {
    1103        7699 :                 format_video_sync = VSYNC_VSCFR;
    1104             :             }
    1105       54380 :             if (format_video_sync == VSYNC_CFR && copy_ts) {
    1106           0 :                 format_video_sync = VSYNC_VSCFR;
    1107             :             }
    1108             :         }
    1109       96269 :         ost->is_cfr = (format_video_sync == VSYNC_CFR || format_video_sync == VSYNC_VSCFR);
    1110             : 
    1111       96269 :         if (delta0 < 0 &&
    1112       10771 :             delta > 0 &&
    1113       10369 :             format_video_sync != VSYNC_PASSTHROUGH &&
    1114             :             format_video_sync != VSYNC_DROP) {
    1115        7600 :             if (delta0 < -0.6) {
    1116         437 :                 av_log(NULL, AV_LOG_WARNING, "Past duration %f too large\n", -delta0);
    1117             :             } else
    1118        7163 :                 av_log(NULL, AV_LOG_DEBUG, "Clipping frame in rate conversion by %f\n", -delta0);
    1119        7600 :             sync_ipts = ost->sync_opts;
    1120        7600 :             duration += delta0;
    1121        7600 :             delta0 = 0;
    1122             :         }
    1123             : 
    1124       96269 :         switch (format_video_sync) {
    1125        7699 :         case VSYNC_VSCFR:
    1126        7699 :             if (ost->frame_number == 0 && delta0 >= 0.5) {
    1127           0 :                 av_log(NULL, AV_LOG_DEBUG, "Not duplicating %d initial frames\n", (int)lrintf(delta0));
    1128           0 :                 delta = duration;
    1129           0 :                 delta0 = 0;
    1130           0 :                 ost->sync_opts = lrint(sync_ipts);
    1131             :             }
    1132             :         case VSYNC_CFR:
    1133             :             // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
    1134        8883 :             if (frame_drop_threshold && delta < frame_drop_threshold && ost->frame_number) {
    1135           0 :                 nb_frames = 0;
    1136        8883 :             } else if (delta < -1.1)
    1137           0 :                 nb_frames = 0;
    1138        8883 :             else if (delta > 1.1) {
    1139         375 :                 nb_frames = lrintf(delta);
    1140         375 :                 if (delta0 > 1.1)
    1141           2 :                     nb0_frames = lrintf(delta0 - 0.6);
    1142             :             }
    1143        8883 :             break;
    1144       45619 :         case VSYNC_VFR:
    1145       45619 :             if (delta <= -0.6)
    1146         171 :                 nb_frames = 0;
    1147       45448 :             else if (delta > 0.6)
    1148       44860 :                 ost->sync_opts = lrint(sync_ipts);
    1149       45619 :             break;
    1150       41767 :         case VSYNC_DROP:
    1151             :         case VSYNC_PASSTHROUGH:
    1152       41767 :             ost->sync_opts = lrint(sync_ipts);
    1153       41767 :             break;
    1154           0 :         default:
    1155           0 :             av_assert0(0);
    1156             :         }
    1157             :     }
    1158             : 
    1159       98605 :     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
    1160       98605 :     nb0_frames = FFMIN(nb0_frames, nb_frames);
    1161             : 
    1162       98605 :     memmove(ost->last_nb0_frames + 1,
    1163       98605 :             ost->last_nb0_frames,
    1164             :             sizeof(ost->last_nb0_frames[0]) * (FF_ARRAY_ELEMS(ost->last_nb0_frames) - 1));
    1165       98605 :     ost->last_nb0_frames[0] = nb0_frames;
    1166             : 
    1167       98605 :     if (nb0_frames == 0 && ost->last_dropped) {
    1168         171 :         nb_frames_drop++;
    1169         342 :         av_log(NULL, AV_LOG_VERBOSE,
    1170             :                "*** dropping frame %d from stream %d at ts %"PRId64"\n",
    1171         342 :                ost->frame_number, ost->st->index, ost->last_frame->pts);
    1172             :     }
    1173       98605 :     if (nb_frames > (nb0_frames && ost->last_dropped) + (nb_frames > nb0_frames)) {
    1174          49 :         if (nb_frames > dts_error_threshold * 30) {
    1175           0 :             av_log(NULL, AV_LOG_ERROR, "%d frame duplication too large, skipping\n", nb_frames - 1);
    1176           0 :             nb_frames_drop++;
    1177           0 :             return;
    1178             :         }
    1179          49 :         nb_frames_dup += nb_frames - (nb0_frames && ost->last_dropped) - (nb_frames > nb0_frames);
    1180          49 :         av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
    1181          49 :         if (nb_frames_dup > dup_warning) {
    1182           0 :             av_log(NULL, AV_LOG_WARNING, "More than %d frames duplicated\n", dup_warning);
    1183           0 :             dup_warning *= 10;
    1184             :         }
    1185             :     }
    1186       98605 :     ost->last_dropped = nb_frames == nb0_frames && next_picture;
    1187             : 
    1188             :   /* duplicates frame if needed */
    1189      194911 :   for (i = 0; i < nb_frames; i++) {
    1190             :     AVFrame *in_picture;
    1191       96307 :     av_init_packet(&pkt);
    1192       96307 :     pkt.data = NULL;
    1193       96307 :     pkt.size = 0;
    1194             : 
    1195       96307 :     if (i < nb0_frames && ost->last_frame) {
    1196          69 :         in_picture = ost->last_frame;
    1197             :     } else
    1198       96238 :         in_picture = next_picture;
    1199             : 
    1200       96307 :     if (!in_picture)
    1201           0 :         return;
    1202             : 
    1203       96307 :     in_picture->pts = ost->sync_opts;
    1204             : 
    1205             : #if 1
    1206       96307 :     if (!check_recording_time(ost))
    1207             : #else
    1208             :     if (ost->frame_number >= ost->max_frames)
    1209             : #endif
    1210           1 :         return;
    1211             : 
    1212             :     {
    1213       96306 :         int forced_keyframe = 0;
    1214             :         double pts_time;
    1215             : 
    1216       97186 :         if (enc->flags & (AV_CODEC_FLAG_INTERLACED_DCT | AV_CODEC_FLAG_INTERLACED_ME) &&
    1217         880 :             ost->top_field_first >= 0)
    1218          25 :             in_picture->top_field_first = !!ost->top_field_first;
    1219             : 
    1220       96306 :         if (in_picture->interlaced_frame) {
    1221        6349 :             if (enc->codec->id == AV_CODEC_ID_MJPEG)
    1222           0 :                 mux_par->field_order = in_picture->top_field_first ? AV_FIELD_TT:AV_FIELD_BB;
    1223             :             else
    1224        6349 :                 mux_par->field_order = in_picture->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
    1225             :         } else
    1226       89957 :             mux_par->field_order = AV_FIELD_PROGRESSIVE;
    1227             : 
    1228       96306 :         in_picture->quality = enc->global_quality;
    1229       96306 :         in_picture->pict_type = 0;
    1230             : 
    1231      192612 :         pts_time = in_picture->pts != AV_NOPTS_VALUE ?
    1232       96306 :             in_picture->pts * av_q2d(enc->time_base) : NAN;
    1233       96345 :         if (ost->forced_kf_index < ost->forced_kf_count &&
    1234          39 :             in_picture->pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
    1235           2 :             ost->forced_kf_index++;
    1236           2 :             forced_keyframe = 1;
    1237       96304 :         } else if (ost->forced_keyframes_pexpr) {
    1238             :             double res;
    1239           0 :             ost->forced_keyframes_expr_const_values[FKF_T] = pts_time;
    1240           0 :             res = av_expr_eval(ost->forced_keyframes_pexpr,
    1241           0 :                                ost->forced_keyframes_expr_const_values, NULL);
    1242             :             ff_dlog(NULL, "force_key_frame: n:%f n_forced:%f prev_forced_n:%f t:%f prev_forced_t:%f -> res:%f\n",
    1243             :                     ost->forced_keyframes_expr_const_values[FKF_N],
    1244             :                     ost->forced_keyframes_expr_const_values[FKF_N_FORCED],
    1245             :                     ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N],
    1246             :                     ost->forced_keyframes_expr_const_values[FKF_T],
    1247             :                     ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T],
    1248             :                     res);
    1249           0 :             if (res) {
    1250           0 :                 forced_keyframe = 1;
    1251           0 :                 ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N] =
    1252           0 :                     ost->forced_keyframes_expr_const_values[FKF_N];
    1253           0 :                 ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T] =
    1254           0 :                     ost->forced_keyframes_expr_const_values[FKF_T];
    1255           0 :                 ost->forced_keyframes_expr_const_values[FKF_N_FORCED] += 1;
    1256             :             }
    1257             : 
    1258           0 :             ost->forced_keyframes_expr_const_values[FKF_N] += 1;
    1259       96304 :         } else if (   ost->forced_keyframes
    1260          48 :                    && !strncmp(ost->forced_keyframes, "source", 6)
    1261           0 :                    && in_picture->key_frame==1) {
    1262           0 :             forced_keyframe = 1;
    1263             :         }
    1264             : 
    1265       96306 :         if (forced_keyframe) {
    1266           2 :             in_picture->pict_type = AV_PICTURE_TYPE_I;
    1267           2 :             av_log(NULL, AV_LOG_DEBUG, "Forced keyframe at time %f\n", pts_time);
    1268             :         }
    1269             : 
    1270       96306 :         update_benchmark(NULL);
    1271       96306 :         if (debug_ts) {
    1272           0 :             av_log(NULL, AV_LOG_INFO, "encoder <- type:video "
    1273             :                    "frame_pts:%s frame_pts_time:%s time_base:%d/%d\n",
    1274           0 :                    av_ts2str(in_picture->pts), av_ts2timestr(in_picture->pts, &enc->time_base),
    1275             :                    enc->time_base.num, enc->time_base.den);
    1276             :         }
    1277             : 
    1278       96306 :         ost->frames_encoded++;
    1279             : 
    1280       96306 :         ret = avcodec_send_frame(enc, in_picture);
    1281       96306 :         if (ret < 0)
    1282           0 :             goto error;
    1283             : 
    1284             :         while (1) {
    1285      288566 :             ret = avcodec_receive_packet(enc, &pkt);
    1286      192436 :             update_benchmark("encode_video %d.%d", ost->file_index, ost->index);
    1287      192436 :             if (ret == AVERROR(EAGAIN))
    1288       96306 :                 break;
    1289       96130 :             if (ret < 0)
    1290           0 :                 goto error;
    1291             : 
    1292       96130 :             if (debug_ts) {
    1293           0 :                 av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
    1294             :                        "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
    1295           0 :                        av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &enc->time_base),
    1296           0 :                        av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &enc->time_base));
    1297             :             }
    1298             : 
    1299       96130 :             if (pkt.pts == AV_NOPTS_VALUE && !(enc->codec->capabilities & AV_CODEC_CAP_DELAY))
    1300           0 :                 pkt.pts = ost->sync_opts;
    1301             : 
    1302       96130 :             av_packet_rescale_ts(&pkt, enc->time_base, ost->mux_timebase);
    1303             : 
    1304       96130 :             if (debug_ts) {
    1305           0 :                 av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
    1306             :                     "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
    1307           0 :                     av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->mux_timebase),
    1308           0 :                     av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->mux_timebase));
    1309             :             }
    1310             : 
    1311       96130 :             frame_size = pkt.size;
    1312       96130 :             output_packet(of, &pkt, ost, 0);
    1313             : 
    1314             :             /* if two pass, output log */
    1315       96130 :             if (ost->logfile && enc->stats_out) {
    1316           0 :                 fprintf(ost->logfile, "%s", enc->stats_out);
    1317             :             }
    1318             :         }
    1319             :     }
    1320       96306 :     ost->sync_opts++;
    1321             :     /*
    1322             :      * For video, number of frames in == number of packets out.
    1323             :      * But there may be reordering, so we can't throw away frames on encoder
    1324             :      * flush, we need to limit them here, before they go into encoder.
    1325             :      */
    1326       96306 :     ost->frame_number++;
    1327             : 
    1328       96306 :     if (vstats_filename && frame_size)
    1329           0 :         do_video_stats(ost, frame_size);
    1330             :   }
    1331             : 
    1332       98604 :     if (!ost->last_frame)
    1333        4319 :         ost->last_frame = av_frame_alloc();
    1334       98604 :     av_frame_unref(ost->last_frame);
    1335       98604 :     if (next_picture && ost->last_frame)
    1336       96268 :         av_frame_ref(ost->last_frame, next_picture);
    1337             :     else
    1338        2336 :         av_frame_free(&ost->last_frame);
    1339             : 
    1340       98604 :     return;
    1341           0 : error:
    1342           0 :     av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
    1343           0 :     exit_program(1);
    1344             : }
    1345             : 
    1346           0 : static double psnr(double d)
    1347             : {
    1348           0 :     return -10.0 * log10(d);
    1349             : }
    1350             : 
    1351           0 : static void do_video_stats(OutputStream *ost, int frame_size)
    1352             : {
    1353             :     AVCodecContext *enc;
    1354             :     int frame_number;
    1355             :     double ti1, bitrate, avg_bitrate;
    1356             : 
    1357             :     /* this is executed just the first time do_video_stats is called */
    1358           0 :     if (!vstats_file) {
    1359           0 :         vstats_file = fopen(vstats_filename, "w");
    1360           0 :         if (!vstats_file) {
    1361           0 :             perror("fopen");
    1362           0 :             exit_program(1);
    1363             :         }
    1364             :     }
    1365             : 
    1366           0 :     enc = ost->enc_ctx;
    1367           0 :     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
    1368           0 :         frame_number = ost->st->nb_frames;
    1369           0 :         if (vstats_version <= 1) {
    1370           0 :             fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number,
    1371           0 :                     ost->quality / (float)FF_QP2LAMBDA);
    1372             :         } else  {
    1373           0 :             fprintf(vstats_file, "out= %2d st= %2d frame= %5d q= %2.1f ", ost->file_index, ost->index, frame_number,
    1374           0 :                     ost->quality / (float)FF_QP2LAMBDA);
    1375             :         }
    1376             : 
    1377           0 :         if (ost->error[0]>=0 && (enc->flags & AV_CODEC_FLAG_PSNR))
    1378           0 :             fprintf(vstats_file, "PSNR= %6.2f ", psnr(ost->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
    1379             : 
    1380           0 :         fprintf(vstats_file,"f_size= %6d ", frame_size);
    1381             :         /* compute pts value */
    1382           0 :         ti1 = av_stream_get_end_pts(ost->st) * av_q2d(ost->st->time_base);
    1383           0 :         if (ti1 < 0.01)
    1384           0 :             ti1 = 0.01;
    1385             : 
    1386           0 :         bitrate     = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
    1387           0 :         avg_bitrate = (double)(ost->data_size * 8) / ti1 / 1000.0;
    1388           0 :         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
    1389           0 :                (double)ost->data_size / 1024, ti1, bitrate, avg_bitrate);
    1390           0 :         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(ost->pict_type));
    1391             :     }
    1392           0 : }
    1393             : 
    1394             : static int init_output_stream(OutputStream *ost, char *error, int error_len);
    1395             : 
    1396         240 : static void finish_output_stream(OutputStream *ost)
    1397             : {
    1398         240 :     OutputFile *of = output_files[ost->file_index];
    1399             :     int i;
    1400             : 
    1401         240 :     ost->finished = ENCODER_FINISHED | MUXER_FINISHED;
    1402             : 
    1403         240 :     if (of->shortest) {
    1404           0 :         for (i = 0; i < of->ctx->nb_streams; i++)
    1405           0 :             output_streams[of->ost_index + i]->finished = ENCODER_FINISHED | MUXER_FINISHED;
    1406             :     }
    1407         240 : }
    1408             : 
    1409             : /**
    1410             :  * Get and encode new output from any of the filtergraphs, without causing
    1411             :  * activity.
    1412             :  *
    1413             :  * @return  0 for success, <0 for severe errors
    1414             :  */
    1415      405067 : static int reap_filters(int flush)
    1416             : {
    1417      405067 :     AVFrame *filtered_frame = NULL;
    1418             :     int i;
    1419             : 
    1420             :     /* Reap all buffers present in the buffer sinks */
    1421      824721 :     for (i = 0; i < nb_output_streams; i++) {
    1422      419654 :         OutputStream *ost = output_streams[i];
    1423      419654 :         OutputFile    *of = output_files[ost->file_index];
    1424             :         AVFilterContext *filter;
    1425      419654 :         AVCodecContext *enc = ost->enc_ctx;
    1426      419654 :         int ret = 0;
    1427             : 
    1428      419654 :         if (!ost->filter || !ost->filter->graph->graph)
    1429       42898 :             continue;
    1430      376756 :         filter = ost->filter->filter;
    1431             : 
    1432      376756 :         if (!ost->initialized) {
    1433        5276 :             char error[1024] = "";
    1434        5276 :             ret = init_output_stream(ost, error, sizeof(error));
    1435        5276 :             if (ret < 0) {
    1436           0 :                 av_log(NULL, AV_LOG_ERROR, "Error initializing output stream %d:%d -- %s\n",
    1437             :                        ost->file_index, ost->index, error);
    1438           0 :                 exit_program(1);
    1439             :             }
    1440             :         }
    1441             : 
    1442      376756 :         if (!ost->filtered_frame && !(ost->filtered_frame = av_frame_alloc())) {
    1443           0 :             return AVERROR(ENOMEM);
    1444             :         }
    1445      376756 :         filtered_frame = ost->filtered_frame;
    1446             : 
    1447      394251 :         while (1) {
    1448      771007 :             double float_pts = AV_NOPTS_VALUE; // this is identical to filtered_frame.pts but with higher precision
    1449      771007 :             ret = av_buffersink_get_frame_flags(filter, filtered_frame,
    1450             :                                                AV_BUFFERSINK_FLAG_NO_REQUEST);
    1451      771007 :             if (ret < 0) {
    1452      376756 :                 if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF) {
    1453           0 :                     av_log(NULL, AV_LOG_WARNING,
    1454           0 :                            "Error in av_buffersink_get_frame_flags(): %s\n", av_err2str(ret));
    1455      376756 :                 } else if (flush && ret == AVERROR_EOF) {
    1456        3446 :                     if (av_buffersink_get_type(filter) == AVMEDIA_TYPE_VIDEO)
    1457        2336 :                         do_video_out(of, ost, NULL, AV_NOPTS_VALUE);
    1458             :                 }
    1459      376756 :                 break;
    1460             :             }
    1461      394251 :             if (ost->finished) {
    1462           0 :                 av_frame_unref(filtered_frame);
    1463           0 :                 continue;
    1464             :             }
    1465      394251 :             if (filtered_frame->pts != AV_NOPTS_VALUE) {
    1466      394251 :                 int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time;
    1467      394251 :                 AVRational filter_tb = av_buffersink_get_time_base(filter);
    1468      394251 :                 AVRational tb = enc->time_base;
    1469      394251 :                 int extra_bits = av_clip(29 - av_log2(tb.den), 0, 16);
    1470             : 
    1471      394251 :                 tb.den <<= extra_bits;
    1472      394251 :                 float_pts =
    1473      788502 :                     av_rescale_q(filtered_frame->pts, filter_tb, tb) -
    1474      394251 :                     av_rescale_q(start_time, AV_TIME_BASE_Q, tb);
    1475      394251 :                 float_pts /= 1 << extra_bits;
    1476             :                 // avoid exact midoints to reduce the chance of rounding differences, this can be removed in case the fps code is changed to work with integers
    1477      394251 :                 float_pts += FFSIGN(float_pts) * 1.0 / (1<<17);
    1478             : 
    1479      394251 :                 filtered_frame->pts =
    1480      788502 :                     av_rescale_q(filtered_frame->pts, filter_tb, enc->time_base) -
    1481      394251 :                     av_rescale_q(start_time, AV_TIME_BASE_Q, enc->time_base);
    1482             :             }
    1483             :             //if (ost->source_index >= 0)
    1484             :             //    *filtered_frame= *input_streams[ost->source_index]->decoded_frame; //for me_threshold
    1485             : 
    1486      394251 :             switch (av_buffersink_get_type(filter)) {
    1487       96269 :             case AVMEDIA_TYPE_VIDEO:
    1488       96269 :                 if (!ost->frame_aspect_ratio.num)
    1489       96269 :                     enc->sample_aspect_ratio = filtered_frame->sample_aspect_ratio;
    1490             : 
    1491       96269 :                 if (debug_ts) {
    1492           0 :                     av_log(NULL, AV_LOG_INFO, "filter -> pts:%s pts_time:%s exact:%f time_base:%d/%d\n",
    1493           0 :                             av_ts2str(filtered_frame->pts), av_ts2timestr(filtered_frame->pts, &enc->time_base),
    1494             :                             float_pts,
    1495             :                             enc->time_base.num, enc->time_base.den);
    1496             :                 }
    1497             : 
    1498       96269 :                 do_video_out(of, ost, filtered_frame, float_pts);
    1499       96269 :                 break;
    1500      297982 :             case AVMEDIA_TYPE_AUDIO:
    1501      595964 :                 if (!(enc->codec->capabilities & AV_CODEC_CAP_PARAM_CHANGE) &&
    1502      297982 :                     enc->channels != filtered_frame->channels) {
    1503           0 :                     av_log(NULL, AV_LOG_ERROR,
    1504             :                            "Audio filter graph output is not normalized and encoder does not support parameter changes\n");
    1505           0 :                     break;
    1506             :                 }
    1507      297982 :                 do_audio_out(of, ost, filtered_frame);
    1508      297982 :                 break;
    1509           0 :             default:
    1510             :                 // TODO support subtitle filters
    1511           0 :                 av_assert0(0);
    1512             :             }
    1513             : 
    1514      394251 :             av_frame_unref(filtered_frame);
    1515             :         }
    1516             :     }
    1517             : 
    1518      405067 :     return 0;
    1519             : }
    1520             : 
    1521        5411 : static void print_final_stats(int64_t total_size)
    1522             : {
    1523        5411 :     uint64_t video_size = 0, audio_size = 0, extra_size = 0, other_size = 0;
    1524        5411 :     uint64_t subtitle_size = 0;
    1525        5411 :     uint64_t data_size = 0;
    1526        5411 :     float percent = -1.0;
    1527             :     int i, j;
    1528        5411 :     int pass1_used = 1;
    1529             : 
    1530       10963 :     for (i = 0; i < nb_output_streams; i++) {
    1531        5552 :         OutputStream *ost = output_streams[i];
    1532        5552 :         switch (ost->enc_ctx->codec_type) {
    1533        4351 :             case AVMEDIA_TYPE_VIDEO: video_size += ost->data_size; break;
    1534        1154 :             case AVMEDIA_TYPE_AUDIO: audio_size += ost->data_size; break;
    1535          36 :             case AVMEDIA_TYPE_SUBTITLE: subtitle_size += ost->data_size; break;
    1536          11 :             default:                 other_size += ost->data_size; break;
    1537             :         }
    1538        5552 :         extra_size += ost->enc_ctx->extradata_size;
    1539        5552 :         data_size  += ost->data_size;
    1540        5552 :         if (   (ost->enc_ctx->flags & (AV_CODEC_FLAG_PASS1 | AV_CODEC_FLAG_PASS2))
    1541             :             != AV_CODEC_FLAG_PASS1)
    1542        5552 :             pass1_used = 0;
    1543             :     }
    1544             : 
    1545        5411 :     if (data_size && total_size>0 && total_size >= data_size)
    1546        3675 :         percent = 100.0 * (total_size - data_size) / data_size;
    1547             : 
    1548        5411 :     av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB subtitle:%1.0fkB other streams:%1.0fkB global headers:%1.0fkB muxing overhead: ",
    1549             :            video_size / 1024.0,
    1550             :            audio_size / 1024.0,
    1551             :            subtitle_size / 1024.0,
    1552             :            other_size / 1024.0,
    1553             :            extra_size / 1024.0);
    1554        5411 :     if (percent >= 0.0)
    1555        3675 :         av_log(NULL, AV_LOG_INFO, "%f%%", percent);
    1556             :     else
    1557        1736 :         av_log(NULL, AV_LOG_INFO, "unknown");
    1558        5411 :     av_log(NULL, AV_LOG_INFO, "\n");
    1559             : 
    1560             :     /* print verbose per-stream stats */
    1561       10869 :     for (i = 0; i < nb_input_files; i++) {
    1562        5458 :         InputFile *f = input_files[i];
    1563        5458 :         uint64_t total_packets = 0, total_size = 0;
    1564             : 
    1565        5458 :         av_log(NULL, AV_LOG_VERBOSE, "Input file #%d (%s):\n",
    1566        5458 :                i, f->ctx->filename);
    1567             : 
    1568       11225 :         for (j = 0; j < f->nb_streams; j++) {
    1569        5767 :             InputStream *ist = input_streams[f->ist_index + j];
    1570        5767 :             enum AVMediaType type = ist->dec_ctx->codec_type;
    1571             : 
    1572        5767 :             total_size    += ist->data_size;
    1573        5767 :             total_packets += ist->nb_packets;
    1574             : 
    1575        5767 :             av_log(NULL, AV_LOG_VERBOSE, "  Input stream #%d:%d (%s): ",
    1576             :                    i, j, media_type_string(type));
    1577        5767 :             av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" packets read (%"PRIu64" bytes); ",
    1578             :                    ist->nb_packets, ist->data_size);
    1579             : 
    1580        5767 :             if (ist->decoding_needed) {
    1581        5323 :                 av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" frames decoded",
    1582             :                        ist->frames_decoded);
    1583        5323 :                 if (type == AVMEDIA_TYPE_AUDIO)
    1584        1068 :                     av_log(NULL, AV_LOG_VERBOSE, " (%"PRIu64" samples)", ist->samples_decoded);
    1585        5323 :                 av_log(NULL, AV_LOG_VERBOSE, "; ");
    1586             :             }
    1587             : 
    1588        5767 :             av_log(NULL, AV_LOG_VERBOSE, "\n");
    1589             :         }
    1590             : 
    1591        5458 :         av_log(NULL, AV_LOG_VERBOSE, "  Total: %"PRIu64" packets (%"PRIu64" bytes) demuxed\n",
    1592             :                total_packets, total_size);
    1593             :     }
    1594             : 
    1595       10823 :     for (i = 0; i < nb_output_files; i++) {
    1596        5412 :         OutputFile *of = output_files[i];
    1597        5412 :         uint64_t total_packets = 0, total_size = 0;
    1598             : 
    1599        5412 :         av_log(NULL, AV_LOG_VERBOSE, "Output file #%d (%s):\n",
    1600        5412 :                i, of->ctx->filename);
    1601             : 
    1602       10964 :         for (j = 0; j < of->ctx->nb_streams; j++) {
    1603        5552 :             OutputStream *ost = output_streams[of->ost_index + j];
    1604        5552 :             enum AVMediaType type = ost->enc_ctx->codec_type;
    1605             : 
    1606        5552 :             total_size    += ost->data_size;
    1607        5552 :             total_packets += ost->packets_written;
    1608             : 
    1609        5552 :             av_log(NULL, AV_LOG_VERBOSE, "  Output stream #%d:%d (%s): ",
    1610             :                    i, j, media_type_string(type));
    1611        5552 :             if (ost->encoding_needed) {
    1612        5329 :                 av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" frames encoded",
    1613             :                        ost->frames_encoded);
    1614        5329 :                 if (type == AVMEDIA_TYPE_AUDIO)
    1615        1065 :                     av_log(NULL, AV_LOG_VERBOSE, " (%"PRIu64" samples)", ost->samples_encoded);
    1616        5329 :                 av_log(NULL, AV_LOG_VERBOSE, "; ");
    1617             :             }
    1618             : 
    1619        5552 :             av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" packets muxed (%"PRIu64" bytes); ",
    1620             :                    ost->packets_written, ost->data_size);
    1621             : 
    1622        5552 :             av_log(NULL, AV_LOG_VERBOSE, "\n");
    1623             :         }
    1624             : 
    1625        5412 :         av_log(NULL, AV_LOG_VERBOSE, "  Total: %"PRIu64" packets (%"PRIu64" bytes) muxed\n",
    1626             :                total_packets, total_size);
    1627             :     }
    1628        5411 :     if(video_size + data_size + audio_size + subtitle_size + extra_size == 0){
    1629           5 :         av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded ");
    1630           5 :         if (pass1_used) {
    1631           1 :             av_log(NULL, AV_LOG_WARNING, "\n");
    1632             :         } else {
    1633           4 :             av_log(NULL, AV_LOG_WARNING, "(check -ss / -t / -frames parameters if used)\n");
    1634             :         }
    1635             :     }
    1636        5411 : }
    1637             : 
    1638     1329862 : static void print_report(int is_last_report, int64_t timer_start, int64_t cur_time)
    1639             : {
    1640             :     char buf[1024];
    1641             :     AVBPrint buf_script;
    1642             :     OutputStream *ost;
    1643             :     AVFormatContext *oc;
    1644             :     int64_t total_size;
    1645             :     AVCodecContext *enc;
    1646             :     int frame_number, vid, i;
    1647             :     double bitrate;
    1648             :     double speed;
    1649     1329862 :     int64_t pts = INT64_MIN + 1;
    1650             :     static int64_t last_time = -1;
    1651             :     static int qp_histogram[52];
    1652             :     int hours, mins, secs, us;
    1653             :     int ret;
    1654             :     float t;
    1655             : 
    1656     1329862 :     if (!print_stats && !is_last_report && !progress_avio)
    1657     2645602 :         return;
    1658             : 
    1659        8707 :     if (!is_last_report) {
    1660        3296 :         if (last_time == -1) {
    1661          21 :             last_time = cur_time;
    1662          21 :             return;
    1663             :         }
    1664        3275 :         if ((cur_time - last_time) < 500000)
    1665        3271 :             return;
    1666           4 :         last_time = cur_time;
    1667             :     }
    1668             : 
    1669        5415 :     t = (cur_time-timer_start) / 1000000.0;
    1670             : 
    1671             : 
    1672        5415 :     oc = output_files[0]->ctx;
    1673             : 
    1674        5415 :     total_size = avio_size(oc->pb);
    1675        5415 :     if (total_size <= 0) // FIXME improve avio_size() so it works with non seekable output too
    1676          48 :         total_size = avio_tell(oc->pb);
    1677             : 
    1678        5415 :     buf[0] = '\0';
    1679        5415 :     vid = 0;
    1680        5415 :     av_bprint_init(&buf_script, 0, 1);
    1681       10971 :     for (i = 0; i < nb_output_streams; i++) {
    1682        5556 :         float q = -1;
    1683        5556 :         ost = output_streams[i];
    1684        5556 :         enc = ost->enc_ctx;
    1685        5556 :         if (!ost->stream_copy)
    1686        5334 :             q = ost->quality / (float) FF_QP2LAMBDA;
    1687             : 
    1688        5556 :         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
    1689           7 :             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
    1690           7 :             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
    1691             :                        ost->file_index, ost->index, q);
    1692             :         }
    1693        5556 :         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
    1694             :             float fps;
    1695             : 
    1696        4345 :             frame_number = ost->frame_number;
    1697        4345 :             fps = t > 1 ? frame_number / t : 0;
    1698        4345 :             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3.*f q=%3.1f ",
    1699             :                      frame_number, fps < 9.95, fps, q);
    1700        4345 :             av_bprintf(&buf_script, "frame=%d\n", frame_number);
    1701        4345 :             av_bprintf(&buf_script, "fps=%.1f\n", fps);
    1702        4345 :             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
    1703             :                        ost->file_index, ost->index, q);
    1704        4345 :             if (is_last_report)
    1705        4344 :                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
    1706        4345 :             if (qp_hist) {
    1707             :                 int j;
    1708           0 :                 int qp = lrintf(q);
    1709           0 :                 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
    1710           0 :                     qp_histogram[qp]++;
    1711           0 :                 for (j = 0; j < 32; j++)
    1712           0 :                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", av_log2(qp_histogram[j] + 1));
    1713             :             }
    1714             : 
    1715        4345 :             if ((enc->flags & AV_CODEC_FLAG_PSNR) && (ost->pict_type != AV_PICTURE_TYPE_NONE || is_last_report)) {
    1716             :                 int j;
    1717           0 :                 double error, error_sum = 0;
    1718           0 :                 double scale, scale_sum = 0;
    1719             :                 double p;
    1720           0 :                 char type[3] = { 'Y','U','V' };
    1721           0 :                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
    1722           0 :                 for (j = 0; j < 3; j++) {
    1723           0 :                     if (is_last_report) {
    1724           0 :                         error = enc->error[j];
    1725           0 :                         scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
    1726             :                     } else {
    1727           0 :                         error = ost->error[j];
    1728           0 :                         scale = enc->width * enc->height * 255.0 * 255.0;
    1729             :                     }
    1730           0 :                     if (j)
    1731           0 :                         scale /= 4;
    1732           0 :                     error_sum += error;
    1733           0 :                     scale_sum += scale;
    1734           0 :                     p = psnr(error / scale);
    1735           0 :                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], p);
    1736           0 :                     av_bprintf(&buf_script, "stream_%d_%d_psnr_%c=%2.2f\n",
    1737           0 :                                ost->file_index, ost->index, type[j] | 32, p);
    1738             :                 }
    1739           0 :                 p = psnr(error_sum / scale_sum);
    1740           0 :                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
    1741           0 :                 av_bprintf(&buf_script, "stream_%d_%d_psnr_all=%2.2f\n",
    1742             :                            ost->file_index, ost->index, p);
    1743             :             }
    1744        4345 :             vid = 1;
    1745             :         }
    1746             :         /* compute min output value */
    1747        5556 :         if (av_stream_get_end_pts(ost->st) != AV_NOPTS_VALUE)
    1748        5556 :             pts = FFMAX(pts, av_rescale_q(av_stream_get_end_pts(ost->st),
    1749             :                                           ost->st->time_base, AV_TIME_BASE_Q));
    1750        5556 :         if (is_last_report)
    1751        5552 :             nb_frames_drop += ost->last_dropped;
    1752             :     }
    1753             : 
    1754        5415 :     secs = FFABS(pts) / AV_TIME_BASE;
    1755        5415 :     us = FFABS(pts) % AV_TIME_BASE;
    1756        5415 :     mins = secs / 60;
    1757        5415 :     secs %= 60;
    1758        5415 :     hours = mins / 60;
    1759        5415 :     mins %= 60;
    1760             : 
    1761        5415 :     bitrate = pts && total_size >= 0 ? total_size * 8 / (pts / 1000.0) : -1;
    1762        5415 :     speed = t != 0.0 ? (double)pts / AV_TIME_BASE / t : -1;
    1763             : 
    1764        5415 :     if (total_size < 0) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
    1765             :                                  "size=N/A time=");
    1766        5367 :     else                snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
    1767             :                                  "size=%8.0fkB time=", total_size / 1024.0);
    1768        5415 :     if (pts < 0)
    1769           1 :         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "-");
    1770        5415 :     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
    1771             :              "%02d:%02d:%02d.%02d ", hours, mins, secs,
    1772        5415 :              (100 * us) / AV_TIME_BASE);
    1773             : 
    1774        5415 :     if (bitrate < 0) {
    1775          59 :         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),"bitrate=N/A");
    1776          59 :         av_bprintf(&buf_script, "bitrate=N/A\n");
    1777             :     }else{
    1778        5356 :         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),"bitrate=%6.1fkbits/s", bitrate);
    1779        5356 :         av_bprintf(&buf_script, "bitrate=%6.1fkbits/s\n", bitrate);
    1780             :     }
    1781             : 
    1782        5415 :     if (total_size < 0) av_bprintf(&buf_script, "total_size=N/A\n");
    1783        5367 :     else                av_bprintf(&buf_script, "total_size=%"PRId64"\n", total_size);
    1784        5415 :     av_bprintf(&buf_script, "out_time_ms=%"PRId64"\n", pts);
    1785        5415 :     av_bprintf(&buf_script, "out_time=%02d:%02d:%02d.%06d\n",
    1786             :                hours, mins, secs, us);
    1787             : 
    1788        5415 :     if (nb_frames_dup || nb_frames_drop)
    1789          27 :         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
    1790             :                 nb_frames_dup, nb_frames_drop);
    1791        5415 :     av_bprintf(&buf_script, "dup_frames=%d\n", nb_frames_dup);
    1792        5415 :     av_bprintf(&buf_script, "drop_frames=%d\n", nb_frames_drop);
    1793             : 
    1794        5415 :     if (speed < 0) {
    1795           1 :         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf)," speed=N/A");
    1796           1 :         av_bprintf(&buf_script, "speed=N/A\n");
    1797             :     } else {
    1798        5414 :         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf)," speed=%4.3gx", speed);
    1799        5414 :         av_bprintf(&buf_script, "speed=%4.3gx\n", speed);
    1800             :     }
    1801             : 
    1802        5415 :     if (print_stats || is_last_report) {
    1803        5415 :         const char end = is_last_report ? '\n' : '\r';
    1804        5415 :         if (print_stats==1 && AV_LOG_INFO > av_log_get_level()) {
    1805           0 :             fprintf(stderr, "%s    %c", buf, end);
    1806             :         } else
    1807        5415 :             av_log(NULL, AV_LOG_INFO, "%s    %c", buf, end);
    1808             : 
    1809        5415 :     fflush(stderr);
    1810             :     }
    1811             : 
    1812        5415 :     if (progress_avio) {
    1813           0 :         av_bprintf(&buf_script, "progress=%s\n",
    1814             :                    is_last_report ? "end" : "continue");
    1815           0 :         avio_write(progress_avio, buf_script.str,
    1816           0 :                    FFMIN(buf_script.len, buf_script.size - 1));
    1817           0 :         avio_flush(progress_avio);
    1818           0 :         av_bprint_finalize(&buf_script, NULL);
    1819           0 :         if (is_last_report) {
    1820           0 :             if ((ret = avio_closep(&progress_avio)) < 0)
    1821           0 :                 av_log(NULL, AV_LOG_ERROR,
    1822           0 :                        "Error closing progress log, loss of information possible: %s\n", av_err2str(ret));
    1823             :         }
    1824             :     }
    1825             : 
    1826        5415 :     if (is_last_report)
    1827        5411 :         print_final_stats(total_size);
    1828             : }
    1829             : 
    1830        5411 : static void flush_encoders(void)
    1831             : {
    1832             :     int i, ret;
    1833             : 
    1834       10963 :     for (i = 0; i < nb_output_streams; i++) {
    1835        5552 :         OutputStream   *ost = output_streams[i];
    1836        5552 :         AVCodecContext *enc = ost->enc_ctx;
    1837        5552 :         OutputFile      *of = output_files[ost->file_index];
    1838             : 
    1839        5552 :         if (!ost->encoding_needed)
    1840         223 :             continue;
    1841             : 
    1842             :         // Try to enable encoding with no input frames.
    1843             :         // Maybe we should just let encoding fail instead.
    1844        5329 :         if (!ost->initialized) {
    1845           0 :             FilterGraph *fg = ost->filter->graph;
    1846           0 :             char error[1024] = "";
    1847             : 
    1848           0 :             av_log(NULL, AV_LOG_WARNING,
    1849             :                    "Finishing stream %d:%d without any data written to it.\n",
    1850           0 :                    ost->file_index, ost->st->index);
    1851             : 
    1852           0 :             if (ost->filter && !fg->graph) {
    1853             :                 int x;
    1854           0 :                 for (x = 0; x < fg->nb_inputs; x++) {
    1855           0 :                     InputFilter *ifilter = fg->inputs[x];
    1856           0 :                     if (ifilter->format < 0) {
    1857           0 :                         AVCodecParameters *par = ifilter->ist->st->codecpar;
    1858             :                         // We never got any input. Set a fake format, which will
    1859             :                         // come from libavformat.
    1860           0 :                         ifilter->format                 = par->format;
    1861           0 :                         ifilter->sample_rate            = par->sample_rate;
    1862           0 :                         ifilter->channels               = par->channels;
    1863           0 :                         ifilter->channel_layout         = par->channel_layout;
    1864           0 :                         ifilter->width                  = par->width;
    1865           0 :                         ifilter->height                 = par->height;
    1866           0 :                         ifilter->sample_aspect_ratio    = par->sample_aspect_ratio;
    1867             :                     }
    1868             :                 }
    1869             : 
    1870           0 :                 if (!ifilter_has_all_input_formats(fg))
    1871           0 :                     continue;
    1872             : 
    1873           0 :                 ret = configure_filtergraph(fg);
    1874           0 :                 if (ret < 0) {
    1875           0 :                     av_log(NULL, AV_LOG_ERROR, "Error configuring filter graph\n");
    1876           0 :                     exit_program(1);
    1877             :                 }
    1878             : 
    1879           0 :                 finish_output_stream(ost);
    1880             :             }
    1881             : 
    1882           0 :             ret = init_output_stream(ost, error, sizeof(error));
    1883           0 :             if (ret < 0) {
    1884           0 :                 av_log(NULL, AV_LOG_ERROR, "Error initializing output stream %d:%d -- %s\n",
    1885             :                        ost->file_index, ost->index, error);
    1886           0 :                 exit_program(1);
    1887             :             }
    1888             :         }
    1889             : 
    1890        5329 :         if (enc->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
    1891         978 :             continue;
    1892             : 
    1893        4351 :         if (enc->codec_type != AVMEDIA_TYPE_VIDEO && enc->codec_type != AVMEDIA_TYPE_AUDIO)
    1894          30 :             continue;
    1895             : 
    1896         215 :         for (;;) {
    1897        4536 :             const char *desc = NULL;
    1898             :             AVPacket pkt;
    1899             :             int pkt_size;
    1900             : 
    1901        4536 :             switch (enc->codec_type) {
    1902         126 :             case AVMEDIA_TYPE_AUDIO:
    1903         126 :                 desc   = "audio";
    1904         126 :                 break;
    1905        4410 :             case AVMEDIA_TYPE_VIDEO:
    1906        4410 :                 desc   = "video";
    1907        4410 :                 break;
    1908           0 :             default:
    1909           0 :                 av_assert0(0);
    1910             :             }
    1911             : 
    1912        4536 :                 av_init_packet(&pkt);
    1913        4536 :                 pkt.data = NULL;
    1914        4536 :                 pkt.size = 0;
    1915             : 
    1916        4536 :                 update_benchmark(NULL);
    1917             : 
    1918        4536 :                 while ((ret = avcodec_receive_packet(enc, &pkt)) == AVERROR(EAGAIN)) {
    1919        4321 :                     ret = avcodec_send_frame(enc, NULL);
    1920        4321 :                     if (ret < 0) {
    1921           0 :                         av_log(NULL, AV_LOG_FATAL, "%s encoding failed: %s\n",
    1922             :                                desc,
    1923           0 :                                av_err2str(ret));
    1924           0 :                         exit_program(1);
    1925             :                     }
    1926             :                 }
    1927             : 
    1928        4536 :                 update_benchmark("flush_%s %d.%d", desc, ost->file_index, ost->index);
    1929        4536 :                 if (ret < 0 && ret != AVERROR_EOF) {
    1930           0 :                     av_log(NULL, AV_LOG_FATAL, "%s encoding failed: %s\n",
    1931             :                            desc,
    1932           0 :                            av_err2str(ret));
    1933           0 :                     exit_program(1);
    1934             :                 }
    1935        4536 :                 if (ost->logfile && enc->stats_out) {
    1936           0 :                     fprintf(ost->logfile, "%s", enc->stats_out);
    1937             :                 }
    1938        4536 :                 if (ret == AVERROR_EOF) {
    1939        4321 :                     output_packet(of, &pkt, ost, 1);
    1940        4321 :                     break;
    1941             :                 }
    1942         215 :                 if (ost->finished & MUXER_FINISHED) {
    1943           0 :                     av_packet_unref(&pkt);
    1944           0 :                     continue;
    1945             :                 }
    1946         215 :                 av_packet_rescale_ts(&pkt, enc->time_base, ost->mux_timebase);
    1947         215 :                 pkt_size = pkt.size;
    1948         215 :                 output_packet(of, &pkt, ost, 0);
    1949         215 :                 if (ost->enc_ctx->codec_type == AVMEDIA_TYPE_VIDEO && vstats_filename) {
    1950           0 :                     do_video_stats(ost, pkt_size);
    1951             :                 }
    1952             :         }
    1953             :     }
    1954        5411 : }
    1955             : 
    1956             : /*
    1957             :  * Check whether a packet from ist should be written into ost at this time
    1958             :  */
    1959      407859 : static int check_output_constraints(InputStream *ist, OutputStream *ost)
    1960             : {
    1961      407859 :     OutputFile *of = output_files[ost->file_index];
    1962      407859 :     int ist_index  = input_files[ist->file_index]->ist_index + ist->st->index;
    1963             : 
    1964      407859 :     if (ost->source_index != ist_index)
    1965       17083 :         return 0;
    1966             : 
    1967      390776 :     if (ost->finished)
    1968        2512 :         return 0;
    1969             : 
    1970      388264 :     if (of->start_time != AV_NOPTS_VALUE && ist->pts < of->start_time)
    1971           0 :         return 0;
    1972             : 
    1973      388264 :     return 1;
    1974             : }
    1975             : 
    1976       26845 : static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
    1977             : {
    1978       26845 :     OutputFile *of = output_files[ost->file_index];
    1979       26845 :     InputFile   *f = input_files [ist->file_index];
    1980       26845 :     int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time;
    1981       26845 :     int64_t ost_tb_start_time = av_rescale_q(start_time, AV_TIME_BASE_Q, ost->mux_timebase);
    1982       26845 :     AVPacket opkt = { 0 };
    1983             : 
    1984       26845 :     av_init_packet(&opkt);
    1985             : 
    1986             :     // EOF: flush output bitstream filters.
    1987       26845 :     if (!pkt) {
    1988           0 :         output_packet(of, &opkt, ost, 1);
    1989           0 :         return;
    1990             :     }
    1991             : 
    1992       26856 :     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
    1993          11 :         !ost->copy_initial_nonkeyframes)
    1994          11 :         return;
    1995             : 
    1996       26834 :     if (!ost->frame_number && !ost->copy_prior_start) {
    1997           0 :         int64_t comp_start = start_time;
    1998           0 :         if (copy_ts && f->start_time != AV_NOPTS_VALUE)
    1999           0 :             comp_start = FFMAX(start_time, f->start_time + f->ts_offset);
    2000           0 :         if (pkt->pts == AV_NOPTS_VALUE ?
    2001           0 :             ist->pts < comp_start :
    2002           0 :             pkt->pts < av_rescale_q(comp_start, AV_TIME_BASE_Q, ist->st->time_base))
    2003           0 :             return;
    2004             :     }
    2005             : 
    2006       27250 :     if (of->recording_time != INT64_MAX &&
    2007         416 :         ist->pts >= of->recording_time + start_time) {
    2008           5 :         close_output_stream(ost);
    2009           5 :         return;
    2010             :     }
    2011             : 
    2012       26829 :     if (f->recording_time != INT64_MAX) {
    2013         148 :         start_time = f->ctx->start_time;
    2014         148 :         if (f->start_time != AV_NOPTS_VALUE && copy_ts)
    2015          74 :             start_time += f->start_time;
    2016         148 :         if (ist->pts >= f->recording_time + start_time) {
    2017           2 :             close_output_stream(ost);
    2018           2 :             return;
    2019             :         }
    2020             :     }
    2021             : 
    2022             :     /* force the input stream PTS */
    2023       26827 :     if (ost->enc_ctx->codec_type == AVMEDIA_TYPE_VIDEO)
    2024        8288 :         ost->sync_opts++;
    2025             : 
    2026       26827 :     if (pkt->pts != AV_NOPTS_VALUE)
    2027       21861 :         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->mux_timebase) - ost_tb_start_time;
    2028             :     else
    2029        4966 :         opkt.pts = AV_NOPTS_VALUE;
    2030             : 
    2031       26827 :     if (pkt->dts == AV_NOPTS_VALUE)
    2032        4714 :         opkt.dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ost->mux_timebase);
    2033             :     else
    2034       22113 :         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->mux_timebase);
    2035       26827 :     opkt.dts -= ost_tb_start_time;
    2036             : 
    2037       26827 :     if (ost->st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO && pkt->dts != AV_NOPTS_VALUE) {
    2038       18009 :         int duration = av_get_audio_frame_duration(ist->dec_ctx, pkt->size);
    2039       18009 :         if(!duration)
    2040        6079 :             duration = ist->dec_ctx->frame_size;
    2041       54027 :         opkt.dts = opkt.pts = av_rescale_delta(ist->st->time_base, pkt->dts,
    2042       18009 :                                                (AVRational){1, ist->dec_ctx->sample_rate}, duration, &ist->filter_in_rescale_delta_last,
    2043       18009 :                                                ost->mux_timebase) - ost_tb_start_time;
    2044             :     }
    2045             : 
    2046       26827 :     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->mux_timebase);
    2047             : 
    2048       26827 :     opkt.flags    = pkt->flags;
    2049             :     // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
    2050       26827 :     if (  ost->st->codecpar->codec_id != AV_CODEC_ID_H264
    2051       22708 :        && ost->st->codecpar->codec_id != AV_CODEC_ID_MPEG1VIDEO
    2052       22708 :        && ost->st->codecpar->codec_id != AV_CODEC_ID_MPEG2VIDEO
    2053       22594 :        && ost->st->codecpar->codec_id != AV_CODEC_ID_VC1
    2054       22594 :        ) {
    2055       45188 :         int ret = av_parser_change(ost->parser, ost->parser_avctx,
    2056             :                              &opkt.data, &opkt.size,
    2057       22594 :                              pkt->data, pkt->size,
    2058       22594 :                              pkt->flags & AV_PKT_FLAG_KEY);
    2059       22594 :         if (ret < 0) {
    2060           0 :             av_log(NULL, AV_LOG_FATAL, "av_parser_change failed: %s\n",
    2061           0 :                    av_err2str(ret));
    2062           0 :             exit_program(1);
    2063             :         }
    2064       22594 :         if (ret) {
    2065           0 :             opkt.buf = av_buffer_create(opkt.data, opkt.size, av_buffer_default_free, NULL, 0);
    2066           0 :             if (!opkt.buf)
    2067           0 :                 exit_program(1);
    2068             :         }
    2069             :     } else {
    2070        4233 :         opkt.data = pkt->data;
    2071        4233 :         opkt.size = pkt->size;
    2072             :     }
    2073       26827 :     av_copy_packet_side_data(&opkt, pkt);
    2074             : 
    2075       26827 :     output_packet(of, &opkt, ost, 0);
    2076             : }
    2077             : 
    2078        1291 : int guess_input_channel_layout(InputStream *ist)
    2079             : {
    2080        1291 :     AVCodecContext *dec = ist->dec_ctx;
    2081             : 
    2082        1291 :     if (!dec->channel_layout) {
    2083             :         char layout_name[256];
    2084             : 
    2085         726 :         if (dec->channels > ist->guess_layout_max)
    2086           4 :             return 0;
    2087         724 :         dec->channel_layout = av_get_default_channel_layout(dec->channels);
    2088         724 :         if (!dec->channel_layout)
    2089           0 :             return 0;
    2090         724 :         av_get_channel_layout_string(layout_name, sizeof(layout_name),
    2091             :                                      dec->channels, dec->channel_layout);
    2092         724 :         av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for Input Stream "
    2093         724 :                "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
    2094             :     }
    2095        1289 :     return 1;
    2096             : }
    2097             : 
    2098      739428 : static void check_decode_result(InputStream *ist, int *got_output, int ret)
    2099             : {
    2100      739428 :     if (*got_output || ret<0)
    2101      381648 :         decode_error_stat[ret<0] ++;
    2102             : 
    2103      739428 :     if (ret < 0 && exit_on_error)
    2104           0 :         exit_program(1);
    2105             : 
    2106      739428 :     if (exit_on_error && *got_output && ist) {
    2107           0 :         if (ist->decoded_frame->decode_error_flags || (ist->decoded_frame->flags & AV_FRAME_FLAG_CORRUPT)) {
    2108           0 :             av_log(NULL, AV_LOG_FATAL, "%s: corrupt decoded frame in stream %d\n", input_files[ist->file_index]->ctx->filename, ist->st->index);
    2109           0 :             exit_program(1);
    2110             :         }
    2111             :     }
    2112      739428 : }
    2113             : 
    2114             : // Filters can be configured only if the formats of all inputs are known.
    2115      935190 : static int ifilter_has_all_input_formats(FilterGraph *fg)
    2116             : {
    2117             :     int i;
    2118      961985 :     for (i = 0; i < fg->nb_inputs; i++) {
    2119     1886444 :         if (fg->inputs[i]->format < 0 && (fg->inputs[i]->type == AVMEDIA_TYPE_AUDIO ||
    2120      929814 :                                           fg->inputs[i]->type == AVMEDIA_TYPE_VIDEO))
    2121      929835 :             return 0;
    2122             :     }
    2123        5355 :     return 1;
    2124             : }
    2125             : 
    2126      380977 : static int ifilter_send_frame(InputFilter *ifilter, AVFrame *frame)
    2127             : {
    2128      380977 :     FilterGraph *fg = ifilter->graph;
    2129             :     int need_reinit, ret, i;
    2130             : 
    2131             :     /* determine if the parameters for this input changed */
    2132      380977 :     need_reinit = ifilter->format != frame->format;
    2133      761954 :     if (!!ifilter->hw_frames_ctx != !!frame->hw_frames_ctx ||
    2134      380977 :         (ifilter->hw_frames_ctx && ifilter->hw_frames_ctx->data != frame->hw_frames_ctx->data))
    2135           0 :         need_reinit = 1;
    2136             : 
    2137      380977 :     switch (ifilter->ist->st->codecpar->codec_type) {
    2138      284631 :     case AVMEDIA_TYPE_AUDIO:
    2139      852824 :         need_reinit |= ifilter->sample_rate    != frame->sample_rate ||
    2140      568192 :                        ifilter->channels       != frame->channels ||
    2141      283561 :                        ifilter->channel_layout != frame->channel_layout;
    2142      284631 :         break;
    2143       96346 :     case AVMEDIA_TYPE_VIDEO:
    2144      188445 :         need_reinit |= ifilter->width  != frame->width ||
    2145       92099 :                        ifilter->height != frame->height;
    2146       96346 :         break;
    2147             :     }
    2148             : 
    2149      380977 :     if (need_reinit) {
    2150        5330 :         ret = ifilter_parameters_from_frame(ifilter, frame);
    2151        5330 :         if (ret < 0)
    2152           0 :             return ret;
    2153             :     }
    2154             : 
    2155             :     /* (re)init the graph if possible, otherwise buffer the frame and return */
    2156      380977 :     if (need_reinit || !fg->graph) {
    2157       10662 :         for (i = 0; i < fg->nb_inputs; i++) {
    2158        5351 :             if (!ifilter_has_all_input_formats(fg)) {
    2159          19 :                 AVFrame *tmp = av_frame_clone(frame);
    2160          19 :                 if (!tmp)
    2161           0 :                     return AVERROR(ENOMEM);
    2162          19 :                 av_frame_unref(frame);
    2163             : 
    2164          19 :                 if (!av_fifo_space(ifilter->frame_queue)) {
    2165           0 :                     ret = av_fifo_realloc2(ifilter->frame_queue, 2 * av_fifo_size(ifilter->frame_queue));
    2166           0 :                     if (ret < 0) {
    2167           0 :                         av_frame_free(&tmp);
    2168           0 :                         return ret;
    2169             :                     }
    2170             :                 }
    2171          19 :                 av_fifo_generic_write(ifilter->frame_queue, &tmp, sizeof(tmp), NULL);
    2172          19 :                 return 0;
    2173             :             }
    2174             :         }
    2175             : 
    2176        5311 :         ret = reap_filters(1);
    2177        5311 :         if (ret < 0 && ret != AVERROR_EOF) {
    2178             :             char errbuf[128];
    2179           0 :             av_strerror(ret, errbuf, sizeof(errbuf));
    2180             : 
    2181           0 :             av_log(NULL, AV_LOG_ERROR, "Error while filtering: %s\n", errbuf);
    2182           0 :             return ret;
    2183             :         }
    2184             : 
    2185        5311 :         ret = configure_filtergraph(fg);
    2186        5311 :         if (ret < 0) {
    2187           0 :             av_log(NULL, AV_LOG_ERROR, "Error reinitializing filters!\n");
    2188           0 :             return ret;
    2189             :         }
    2190             :     }
    2191             : 
    2192      380958 :     ret = av_buffersrc_add_frame_flags(ifilter->filter, frame, AV_BUFFERSRC_FLAG_PUSH);
    2193      380958 :     if (ret < 0) {
    2194           0 :         if (ret != AVERROR_EOF)
    2195           0 :             av_log(NULL, AV_LOG_ERROR, "Error while filtering: %s\n", av_err2str(ret));
    2196           0 :         return ret;
    2197             :     }
    2198             : 
    2199      380958 :     return 0;
    2200             : }
    2201             : 
    2202        5284 : static int ifilter_send_eof(InputFilter *ifilter, int64_t pts)
    2203             : {
    2204             :     int i, j, ret;
    2205             : 
    2206        5284 :     ifilter->eof = 1;
    2207             : 
    2208        5284 :     if (ifilter->filter) {
    2209        5284 :         ret = av_buffersrc_close(ifilter->filter, pts, AV_BUFFERSRC_FLAG_PUSH);
    2210        5284 :         if (ret < 0)
    2211           0 :             return ret;
    2212             :     } else {
    2213             :         // the filtergraph was never configured
    2214           0 :         FilterGraph *fg = ifilter->graph;
    2215           0 :         for (i = 0; i < fg->nb_inputs; i++)
    2216           0 :             if (!fg->inputs[i]->eof)
    2217           0 :                 break;
    2218           0 :         if (i == fg->nb_inputs) {
    2219             :             // All the input streams have finished without the filtergraph
    2220             :             // ever being configured.
    2221             :             // Mark the output streams as finished.
    2222           0 :             for (j = 0; j < fg->nb_outputs; j++)
    2223           0 :                 finish_output_stream(fg->outputs[j]->ost);
    2224             :         }
    2225             :     }
    2226             : 
    2227        5284 :     return 0;
    2228             : }
    2229             : 
    2230             : // This does not quite work like avcodec_decode_audio4/avcodec_decode_video2.
    2231             : // There is the following difference: if you got a frame, you must call
    2232             : // it again with pkt=NULL. pkt==NULL is treated differently from pkt->size==0
    2233             : // (pkt==NULL means get more output, pkt->size==0 is a flush/drain packet)
    2234      743542 : static int decode(AVCodecContext *avctx, AVFrame *frame, int *got_frame, AVPacket *pkt)
    2235             : {
    2236             :     int ret;
    2237             : 
    2238      743542 :     *got_frame = 0;
    2239             : 
    2240      743542 :     if (pkt) {
    2241      363562 :         ret = avcodec_send_packet(avctx, pkt);
    2242             :         // In particular, we don't expect AVERROR(EAGAIN), because we read all
    2243             :         // decoded frames with avcodec_receive_frame() until done.
    2244      363562 :         if (ret < 0 && ret != AVERROR_EOF)
    2245         379 :             return ret;
    2246             :     }
    2247             : 
    2248      743163 :     ret = avcodec_receive_frame(avctx, frame);
    2249      743163 :     if (ret < 0 && ret != AVERROR(EAGAIN))
    2250        5286 :         return ret;
    2251      737877 :     if (ret >= 0)
    2252      380589 :         *got_frame = 1;
    2253             : 
    2254      737877 :     return 0;
    2255             : }
    2256             : 
    2257      380589 : static int send_frame_to_filters(InputStream *ist, AVFrame *decoded_frame)
    2258             : {
    2259             :     int i, ret;
    2260             :     AVFrame *f;
    2261             : 
    2262             :     av_assert1(ist->nb_filters > 0); /* ensure ret is initialized */
    2263      761566 :     for (i = 0; i < ist->nb_filters; i++) {
    2264      380977 :         if (i < ist->nb_filters - 1) {
    2265         388 :             f = ist->filter_frame;
    2266         388 :             ret = av_frame_ref(f, decoded_frame);
    2267         388 :             if (ret < 0)
    2268           0 :                 break;
    2269             :         } else
    2270      380589 :             f = decoded_frame;
    2271      380977 :         ret = ifilter_send_frame(ist->filters[i], f);
    2272      380977 :         if (ret == AVERROR_EOF)
    2273           0 :             ret = 0; /* ignore */
    2274      380977 :         if (ret < 0) {
    2275           0 :             av_log(NULL, AV_LOG_ERROR,
    2276           0 :                    "Failed to inject frame into filter network: %s\n", av_err2str(ret));
    2277           0 :             break;
    2278             :         }
    2279             :     }
    2280      380589 :     return ret;
    2281             : }
    2282             : 
    2283      542778 : static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output,
    2284             :                         int *decode_failed)
    2285             : {
    2286             :     AVFrame *decoded_frame;
    2287      542778 :     AVCodecContext *avctx = ist->dec_ctx;
    2288      542778 :     int ret, err = 0;
    2289             :     AVRational decoded_frame_tb;
    2290             : 
    2291      542778 :     if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
    2292           0 :         return AVERROR(ENOMEM);
    2293      542778 :     if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
    2294           0 :         return AVERROR(ENOMEM);
    2295      542778 :     decoded_frame = ist->decoded_frame;
    2296             : 
    2297      542778 :     update_benchmark(NULL);
    2298      542778 :     ret = decode(avctx, decoded_frame, got_output, pkt);
    2299      542778 :     update_benchmark("decode_audio %d.%d", ist->file_index, ist->st->index);
    2300      542778 :     if (ret < 0)
    2301        1077 :         *decode_failed = 1;
    2302             : 
    2303      542778 :     if (ret >= 0 && avctx->sample_rate <= 0) {
    2304           0 :         av_log(avctx, AV_LOG_ERROR, "Sample rate %d invalid\n", avctx->sample_rate);
    2305           0 :         ret = AVERROR_INVALIDDATA;
    2306             :     }
    2307             : 
    2308      542778 :     if (ret != AVERROR_EOF)
    2309      541711 :         check_decode_result(ist, got_output, ret);
    2310             : 
    2311      542778 :     if (!*got_output || ret < 0)
    2312      258535 :         return ret;
    2313             : 
    2314      284243 :     ist->samples_decoded += decoded_frame->nb_samples;
    2315      284243 :     ist->frames_decoded++;
    2316             : 
    2317             : #if 1
    2318             :     /* increment next_dts to use for the case where the input stream does not
    2319             :        have timestamps or there are multiple frames in the packet */
    2320      568486 :     ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
    2321      284243 :                      avctx->sample_rate;
    2322      568486 :     ist->next_dts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
    2323      284243 :                      avctx->sample_rate;
    2324             : #endif
    2325             : 
    2326      284243 :     if (decoded_frame->pts != AV_NOPTS_VALUE) {
    2327      256339 :         decoded_frame_tb   = ist->st->time_base;
    2328       27904 :     } else if (pkt && pkt->pts != AV_NOPTS_VALUE) {
    2329           3 :         decoded_frame->pts = pkt->pts;
    2330           3 :         decoded_frame_tb   = ist->st->time_base;
    2331             :     }else {
    2332       27901 :         decoded_frame->pts = ist->dts;
    2333       27901 :         decoded_frame_tb   = AV_TIME_BASE_Q;
    2334             :     }
    2335      284243 :     if (decoded_frame->pts != AV_NOPTS_VALUE)
    2336      568486 :         decoded_frame->pts = av_rescale_delta(decoded_frame_tb, decoded_frame->pts,
    2337      284243 :                                               (AVRational){1, avctx->sample_rate}, decoded_frame->nb_samples, &ist->filter_in_rescale_delta_last,
    2338      284243 :                                               (AVRational){1, avctx->sample_rate});
    2339      284243 :     ist->nb_samples = decoded_frame->nb_samples;
    2340      284243 :     err = send_frame_to_filters(ist, decoded_frame);
    2341             : 
    2342      284243 :     av_frame_unref(ist->filter_frame);
    2343      284243 :     av_frame_unref(decoded_frame);
    2344      284243 :     return err < 0 ? err : ret;
    2345             : }
    2346             : 
    2347      202309 : static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output, int64_t *duration_pts, int eof,
    2348             :                         int *decode_failed)
    2349             : {
    2350             :     AVFrame *decoded_frame;
    2351      202309 :     int i, ret = 0, err = 0;
    2352             :     int64_t best_effort_timestamp;
    2353      202309 :     int64_t dts = AV_NOPTS_VALUE;
    2354             :     AVPacket avpkt;
    2355             : 
    2356             :     // With fate-indeo3-2, we're getting 0-sized packets before EOF for some
    2357             :     // reason. This seems like a semi-critical bug. Don't trigger EOF, and
    2358             :     // skip the packet.
    2359      202309 :     if (!eof && pkt && pkt->size == 0)
    2360        1545 :         return 0;
    2361             : 
    2362      200764 :     if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
    2363           0 :         return AVERROR(ENOMEM);
    2364      200764 :     if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
    2365           0 :         return AVERROR(ENOMEM);
    2366      200764 :     decoded_frame = ist->decoded_frame;
    2367      200764 :     if (ist->dts != AV_NOPTS_VALUE)
    2368      200353 :         dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
    2369      200764 :     if (pkt) {
    2370      104999 :         avpkt = *pkt;
    2371      104999 :         avpkt.dts = dts; // ffmpeg.c probably shouldn't do this
    2372             :     }
    2373             : 
    2374             :     // The old code used to set dts on the drain packet, which does not work
    2375             :     // with the new API anymore.
    2376      200764 :     if (eof) {
    2377        4795 :         void *new = av_realloc_array(ist->dts_buffer, ist->nb_dts_buffer + 1, sizeof(ist->dts_buffer[0]));
    2378        4795 :         if (!new)
    2379           0 :             return AVERROR(ENOMEM);
    2380        4795 :         ist->dts_buffer = new;
    2381        4795 :         ist->dts_buffer[ist->nb_dts_buffer++] = dts;
    2382             :     }
    2383             : 
    2384      200764 :     update_benchmark(NULL);
    2385      200764 :     ret = decode(ist->dec_ctx, decoded_frame, got_output, pkt ? &avpkt : NULL);
    2386      200764 :     update_benchmark("decode_video %d.%d", ist->file_index, ist->st->index);
    2387      200764 :     if (ret < 0)
    2388        4588 :         *decode_failed = 1;
    2389             : 
    2390             :     // The following line may be required in some cases where there is no parser
    2391             :     // or the parser does not has_b_frames correctly
    2392      200764 :     if (ist->st->codecpar->video_delay < ist->dec_ctx->has_b_frames) {
    2393           2 :         if (ist->dec_ctx->codec_id == AV_CODEC_ID_H264) {
    2394           2 :             ist->st->codecpar->video_delay = ist->dec_ctx->has_b_frames;
    2395             :         } else
    2396           0 :             av_log(ist->dec_ctx, AV_LOG_WARNING,
    2397             :                    "video_delay is larger in decoder than demuxer %d > %d.\n"
    2398             :                    "If you want to help, upload a sample "
    2399             :                    "of this file to ftp://upload.ffmpeg.org/incoming/ "
    2400             :                    "and contact the ffmpeg-devel mailing list. (ffmpeg-devel@ffmpeg.org)\n",
    2401           0 :                    ist->dec_ctx->has_b_frames,
    2402           0 :                    ist->st->codecpar->video_delay);
    2403             :     }
    2404             : 
    2405      200764 :     if (ret != AVERROR_EOF)
    2406      196550 :         check_decode_result(ist, got_output, ret);
    2407             : 
    2408      200764 :     if (*got_output && ret >= 0) {
    2409      192683 :         if (ist->dec_ctx->width  != decoded_frame->width ||
    2410      192672 :             ist->dec_ctx->height != decoded_frame->height ||
    2411       96335 :             ist->dec_ctx->pix_fmt != decoded_frame->format) {
    2412          30 :             av_log(NULL, AV_LOG_DEBUG, "Frame parameters mismatch context %d,%d,%d != %d,%d,%d\n",
    2413             :                 decoded_frame->width,
    2414             :                 decoded_frame->height,
    2415             :                 decoded_frame->format,
    2416          15 :                 ist->dec_ctx->width,
    2417          15 :                 ist->dec_ctx->height,
    2418          15 :                 ist->dec_ctx->pix_fmt);
    2419             :         }
    2420             :     }
    2421             : 
    2422      200764 :     if (!*got_output || ret < 0)
    2423      104418 :         return ret;
    2424             : 
    2425       96346 :     if(ist->top_field_first>=0)
    2426           0 :         decoded_frame->top_field_first = ist->top_field_first;
    2427             : 
    2428       96346 :     ist->frames_decoded++;
    2429             : 
    2430       96346 :     if (ist->hwaccel_retrieve_data && decoded_frame->format == ist->hwaccel_pix_fmt) {
    2431           0 :         err = ist->hwaccel_retrieve_data(ist->dec_ctx, decoded_frame);
    2432           0 :         if (err < 0)
    2433           0 :             goto fail;
    2434             :     }
    2435       96346 :     ist->hwaccel_retrieved_pix_fmt = decoded_frame->format;
    2436             : 
    2437       96346 :     best_effort_timestamp= decoded_frame->best_effort_timestamp;
    2438       96346 :     *duration_pts = decoded_frame->pkt_duration;
    2439             : 
    2440       96346 :     if (ist->framerate.num)
    2441         103 :         best_effort_timestamp = ist->cfr_next_pts++;
    2442             : 
    2443       96346 :     if (eof && best_effort_timestamp == AV_NOPTS_VALUE && ist->nb_dts_buffer > 0) {
    2444         521 :         best_effort_timestamp = ist->dts_buffer[0];
    2445             : 
    2446         521 :         for (i = 0; i < ist->nb_dts_buffer - 1; i++)
    2447           0 :             ist->dts_buffer[i] = ist->dts_buffer[i + 1];
    2448         521 :         ist->nb_dts_buffer--;
    2449             :     }
    2450             : 
    2451       96346 :     if(best_effort_timestamp != AV_NOPTS_VALUE) {
    2452       96346 :         int64_t ts = av_rescale_q(decoded_frame->pts = best_effort_timestamp, ist->st->time_base, AV_TIME_BASE_Q);
    2453             : 
    2454       96346 :         if (ts != AV_NOPTS_VALUE)
    2455       96346 :             ist->next_pts = ist->pts = ts;
    2456             :     }
    2457             : 
    2458       96346 :     if (debug_ts) {
    2459           0 :         av_log(NULL, AV_LOG_INFO, "decoder -> ist_index:%d type:video "
    2460             :                "frame_pts:%s frame_pts_time:%s best_effort_ts:%"PRId64" best_effort_ts_time:%s keyframe:%d frame_type:%d time_base:%d/%d\n",
    2461           0 :                ist->st->index, av_ts2str(decoded_frame->pts),
    2462           0 :                av_ts2timestr(decoded_frame->pts, &ist->st->time_base),
    2463             :                best_effort_timestamp,
    2464           0 :                av_ts2timestr(best_effort_timestamp, &ist->st->time_base),
    2465           0 :                decoded_frame->key_frame, decoded_frame->pict_type,
    2466           0 :                ist->st->time_base.num, ist->st->time_base.den);
    2467             :     }
    2468             : 
    2469       96346 :     if (ist->st->sample_aspect_ratio.num)
    2470        4336 :         decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
    2471             : 
    2472       96346 :     err = send_frame_to_filters(ist, decoded_frame);
    2473             : 
    2474       96346 : fail:
    2475       96346 :     av_frame_unref(ist->filter_frame);
    2476       96346 :     av_frame_unref(decoded_frame);
    2477       96346 :     return err < 0 ? err : ret;
    2478             : }
    2479             : 
    2480        1167 : static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output,
    2481             :                                int *decode_failed)
    2482             : {
    2483             :     AVSubtitle subtitle;
    2484        1167 :     int free_sub = 1;
    2485        1167 :     int i, ret = avcodec_decode_subtitle2(ist->dec_ctx,
    2486             :                                           &subtitle, got_output, pkt);
    2487             : 
    2488        1167 :     check_decode_result(NULL, got_output, ret);
    2489             : 
    2490        1167 :     if (ret < 0 || !*got_output) {
    2491         571 :         *decode_failed = 1;
    2492         571 :         if (!pkt->size)
    2493          31 :             sub2video_flush(ist);
    2494         571 :         return ret;
    2495             :     }
    2496             : 
    2497         596 :     if (ist->fix_sub_duration) {
    2498           0 :         int end = 1;
    2499           0 :         if (ist->prev_sub.got_output) {
    2500           0 :             end = av_rescale(subtitle.pts - ist->prev_sub.subtitle.pts,
    2501             :                              1000, AV_TIME_BASE);
    2502           0 :             if (end < ist->prev_sub.subtitle.end_display_time) {
    2503           0 :                 av_log(ist->dec_ctx, AV_LOG_DEBUG,
    2504             :                        "Subtitle duration reduced from %"PRId32" to %d%s\n",
    2505             :                        ist->prev_sub.subtitle.end_display_time, end,
    2506             :                        end <= 0 ? ", dropping it" : "");
    2507           0 :                 ist->prev_sub.subtitle.end_display_time = end;
    2508             :             }
    2509             :         }
    2510           0 :         FFSWAP(int,        *got_output, ist->prev_sub.got_output);
    2511           0 :         FFSWAP(int,        ret,         ist->prev_sub.ret);
    2512           0 :         FFSWAP(AVSubtitle, subtitle,    ist->prev_sub.subtitle);
    2513           0 :         if (end <= 0)
    2514           0 :             goto out;
    2515             :     }
    2516             : 
    2517         596 :     if (!*got_output)
    2518           0 :         return ret;
    2519             : 
    2520         596 :     if (ist->sub2video.frame) {
    2521          44 :         sub2video_update(ist, &subtitle);
    2522         552 :     } else if (ist->nb_filters) {
    2523           0 :         if (!ist->sub2video.sub_queue)
    2524           0 :             ist->sub2video.sub_queue = av_fifo_alloc(8 * sizeof(AVSubtitle));
    2525           0 :         if (!ist->sub2video.sub_queue)
    2526           0 :             exit_program(1);
    2527           0 :         if (!av_fifo_space(ist->sub2video.sub_queue)) {
    2528           0 :             ret = av_fifo_realloc2(ist->sub2video.sub_queue, 2 * av_fifo_size(ist->sub2video.sub_queue));
    2529           0 :             if (ret < 0)
    2530           0 :                 exit_program(1);
    2531             :         }
    2532           0 :         av_fifo_generic_write(ist->sub2video.sub_queue, &subtitle, sizeof(subtitle), NULL);
    2533           0 :         free_sub = 0;
    2534             :     }
    2535             : 
    2536         596 :     if (!subtitle.num_rects)
    2537           0 :         goto out;
    2538             : 
    2539         596 :     ist->frames_decoded++;
    2540             : 
    2541        1236 :     for (i = 0; i < nb_output_streams; i++) {
    2542         640 :         OutputStream *ost = output_streams[i];
    2543             : 
    2544         640 :         if (!check_output_constraints(ist, ost) || !ost->encoding_needed
    2545         595 :             || ost->enc->type != AVMEDIA_TYPE_SUBTITLE)
    2546          45 :             continue;
    2547             : 
    2548         595 :         do_subtitle_out(output_files[ost->file_index], ost, &subtitle);
    2549             :     }
    2550             : 
    2551         596 : out:
    2552         596 :     if (free_sub)
    2553         596 :         avsubtitle_free(&subtitle);
    2554         596 :     return ret;
    2555             : }
    2556             : 
    2557        5312 : static int send_filter_eof(InputStream *ist)
    2558             : {
    2559             :     int i, ret;
    2560             :     /* TODO keep pts also in stream time base to avoid converting back */
    2561        5312 :     int64_t pts = av_rescale_q_rnd(ist->pts, AV_TIME_BASE_Q, ist->st->time_base,
    2562             :                                    AV_ROUND_NEAR_INF | AV_ROUND_PASS_MINMAX);
    2563             : 
    2564       10596 :     for (i = 0; i < ist->nb_filters; i++) {
    2565        5284 :         ret = ifilter_send_eof(ist->filters[i], pts);
    2566        5284 :         if (ret < 0)
    2567           0 :             return ret;
    2568             :     }
    2569        5312 :     return 0;
    2570             : }
    2571             : 
    2572             : /* pkt = NULL means EOF (needed to flush decoder buffers) */
    2573      393203 : static int process_input_packet(InputStream *ist, const AVPacket *pkt, int no_eof)
    2574             : {
    2575      393203 :     int ret = 0, i;
    2576      393203 :     int repeating = 0;
    2577      393203 :     int eof_reached = 0;
    2578             : 
    2579             :     AVPacket avpkt;
    2580      393203 :     if (!ist->saw_first_ts) {
    2581        5574 :         ist->dts = ist->st->avg_frame_rate.num ? - ist->dec_ctx->has_b_frames * AV_TIME_BASE / av_q2d(ist->st->avg_frame_rate) : 0;
    2582        5574 :         ist->pts = 0;
    2583        5574 :         if (pkt && pkt->pts != AV_NOPTS_VALUE && !ist->decoding_needed) {
    2584         146 :             ist->dts += av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
    2585         146 :             ist->pts = ist->dts; //unused but better to set it to a value thats not totally wrong
    2586             :         }
    2587        5574 :         ist->saw_first_ts = 1;
    2588             :     }
    2589             : 
    2590      393203 :     if (ist->next_dts == AV_NOPTS_VALUE)
    2591        5988 :         ist->next_dts = ist->dts;
    2592      393203 :     if (ist->next_pts == AV_NOPTS_VALUE)
    2593        5574 :         ist->next_pts = ist->pts;
    2594             : 
    2595      393203 :     if (!pkt) {
    2596             :         /* EOF handling */
    2597        5983 :         av_init_packet(&avpkt);
    2598        5983 :         avpkt.data = NULL;
    2599        5983 :         avpkt.size = 0;
    2600             :     } else {
    2601      387220 :         avpkt = *pkt;
    2602             :     }
    2603             : 
    2604      393203 :     if (pkt && pkt->dts != AV_NOPTS_VALUE) {
    2605      351575 :         ist->next_dts = ist->dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
    2606      351575 :         if (ist->dec_ctx->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
    2607      279677 :             ist->next_pts = ist->pts = ist->dts;
    2608             :     }
    2609             : 
    2610             :     // while we have more to decode or while the decoder did output something on EOF
    2611     1166982 :     while (ist->decoding_needed) {
    2612      746850 :         int64_t duration_dts = 0;
    2613      746850 :         int64_t duration_pts = 0;
    2614      746850 :         int got_output = 0;
    2615      746850 :         int decode_failed = 0;
    2616             : 
    2617      746850 :         ist->pts = ist->next_pts;
    2618      746850 :         ist->dts = ist->next_dts;
    2619             : 
    2620      746850 :         switch (ist->dec_ctx->codec_type) {
    2621      542778 :         case AVMEDIA_TYPE_AUDIO:
    2622      542778 :             ret = decode_audio    (ist, repeating ? NULL : &avpkt, &got_output,
    2623             :                                    &decode_failed);
    2624      542778 :             break;
    2625      202309 :         case AVMEDIA_TYPE_VIDEO:
    2626      202309 :             ret = decode_video    (ist, repeating ? NULL : &avpkt, &got_output, &duration_pts, !pkt,
    2627             :                                    &decode_failed);
    2628      202309 :             if (!repeating || !pkt || got_output) {
    2629      106544 :                 if (pkt && pkt->duration) {
    2630       99501 :                     duration_dts = av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
    2631        7043 :                 } else if(ist->dec_ctx->framerate.num != 0 && ist->dec_ctx->framerate.den != 0) {
    2632        5835 :                     int ticks= av_stream_get_parser(ist->st) ? av_stream_get_parser(ist->st)->repeat_pict+1 : ist->dec_ctx->ticks_per_frame;
    2633       11670 :                     duration_dts = ((int64_t)AV_TIME_BASE *
    2634       17505 :                                     ist->dec_ctx->framerate.den * ticks) /
    2635       11670 :                                     ist->dec_ctx->framerate.num / ist->dec_ctx->ticks_per_frame;
    2636             :                 }
    2637             : 
    2638      106544 :                 if(ist->dts != AV_NOPTS_VALUE && duration_dts) {
    2639      105336 :                     ist->next_dts += duration_dts;
    2640             :                 }else
    2641        1208 :                     ist->next_dts = AV_NOPTS_VALUE;
    2642             :             }
    2643             : 
    2644      202309 :             if (got_output) {
    2645       96346 :                 if (duration_pts > 0) {
    2646       94100 :                     ist->next_pts += av_rescale_q(duration_pts, ist->st->time_base, AV_TIME_BASE_Q);
    2647             :                 } else {
    2648        2246 :                     ist->next_pts += duration_dts;
    2649             :                 }
    2650             :             }
    2651      202309 :             break;
    2652        1763 :         case AVMEDIA_TYPE_SUBTITLE:
    2653        1763 :             if (repeating)
    2654         596 :                 break;
    2655        1167 :             ret = transcode_subtitles(ist, &avpkt, &got_output, &decode_failed);
    2656        1167 :             if (!pkt && ret >= 0)
    2657          31 :                 ret = AVERROR_EOF;
    2658        1167 :             break;
    2659           0 :         default:
    2660           0 :             return -1;
    2661             :         }
    2662             : 
    2663      746850 :         if (ret == AVERROR_EOF) {
    2664        5312 :             eof_reached = 1;
    2665      371586 :             break;
    2666             :         }
    2667             : 
    2668      741538 :         if (ret < 0) {
    2669         463 :             if (decode_failed) {
    2670         926 :                 av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d: %s\n",
    2671         926 :                        ist->file_index, ist->st->index, av_err2str(ret));
    2672             :             } else {
    2673           0 :                 av_log(NULL, AV_LOG_FATAL, "Error while processing the decoded "
    2674           0 :                        "data for stream #%d:%d\n", ist->file_index, ist->st->index);
    2675             :             }
    2676         463 :             if (!decode_failed || exit_on_error)
    2677           0 :                 exit_program(1);
    2678         463 :             break;
    2679             :         }
    2680             : 
    2681      741075 :         if (got_output)
    2682      381185 :             ist->got_output = 1;
    2683             : 
    2684      741075 :         if (!got_output)
    2685      359890 :             break;
    2686             : 
    2687             :         // During draining, we might get multiple output frames in this loop.
    2688             :         // ffmpeg.c does not drain the filter chain on configuration changes,
    2689             :         // which means if we send multiple frames at once to the filters, and
    2690             :         // one of those frames changes configuration, the buffered frames will
    2691             :         // be lost. This can upset certain FATE tests.
    2692             :         // Decode only 1 frame per call on EOF to appease these FATE tests.
    2693             :         // The ideal solution would be to rewrite decoding to use the new
    2694             :         // decoding API in a better way.
    2695      381185 :         if (!pkt)
    2696         609 :             break;
    2697             : 
    2698      380576 :         repeating = 1;
    2699             :     }
    2700             : 
    2701             :     /* after flushing, send an EOF on all the filter inputs attached to the stream */
    2702             :     /* except when looping we need to flush but not to send an EOF */
    2703      393203 :     if (!pkt && ist->decoding_needed && eof_reached && !no_eof) {
    2704        5312 :         int ret = send_filter_eof(ist);
    2705        5312 :         if (ret < 0) {
    2706           0 :             av_log(NULL, AV_LOG_FATAL, "Error marking filters as finished\n");
    2707           0 :             exit_program(1);
    2708             :         }
    2709             :     }
    2710             : 
    2711             :     /* handle stream copy */
    2712      393203 :     if (!ist->decoding_needed && pkt) {
    2713       26868 :         ist->dts = ist->next_dts;
    2714       26868 :         switch (ist->dec_ctx->codec_type) {
    2715       18037 :         case AVMEDIA_TYPE_AUDIO:
    2716       36074 :             ist->next_dts += ((int64_t)AV_TIME_BASE * ist->dec_ctx->frame_size) /
    2717       18037 :                              ist->dec_ctx->sample_rate;
    2718       18037 :             break;
    2719        8301 :         case AVMEDIA_TYPE_VIDEO:
    2720        8301 :             if (ist->framerate.num) {
    2721             :                 // TODO: Remove work-around for c99-to-c89 issue 7
    2722          79 :                 AVRational time_base_q = AV_TIME_BASE_Q;
    2723          79 :                 int64_t next_dts = av_rescale_q(ist->next_dts, time_base_q, av_inv_q(ist->framerate));
    2724          79 :                 ist->next_dts = av_rescale_q(next_dts + 1, av_inv_q(ist->framerate), time_base_q);
    2725        8222 :             } else if (pkt->duration) {
    2726        7995 :                 ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
    2727         227 :             } else if(ist->dec_ctx->framerate.num != 0) {
    2728         119 :                 int ticks= av_stream_get_parser(ist->st) ? av_stream_get_parser(ist->st)->repeat_pict + 1 : ist->dec_ctx->ticks_per_frame;
    2729         357 :                 ist->next_dts += ((int64_t)AV_TIME_BASE *
    2730         357 :                                   ist->dec_ctx->framerate.den * ticks) /
    2731         238 :                                   ist->dec_ctx->framerate.num / ist->dec_ctx->ticks_per_frame;
    2732             :             }
    2733        8301 :             break;
    2734             :         }
    2735       26868 :         ist->pts = ist->dts;
    2736       26868 :         ist->next_pts = ist->next_dts;
    2737             :     }
    2738      800422 :     for (i = 0; i < nb_output_streams; i++) {
    2739      407219 :         OutputStream *ost = output_streams[i];
    2740             : 
    2741      407219 :         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
    2742      380374 :             continue;
    2743             : 
    2744       26845 :         do_streamcopy(ist, ost, pkt);
    2745             :     }
    2746             : 
    2747      393203 :     return !eof_reached;
    2748             : }
    2749             : 
    2750           0 : static void print_sdp(void)
    2751             : {
    2752             :     char sdp[16384];
    2753             :     int i;
    2754             :     int j;
    2755             :     AVIOContext *sdp_pb;
    2756             :     AVFormatContext **avc;
    2757             : 
    2758           0 :     for (i = 0; i < nb_output_files; i++) {
    2759           0 :         if (!output_files[i]->header_written)
    2760           0 :             return;
    2761             :     }
    2762             : 
    2763           0 :     avc = av_malloc_array(nb_output_files, sizeof(*avc));
    2764           0 :     if (!avc)
    2765           0 :         exit_program(1);
    2766           0 :     for (i = 0, j = 0; i < nb_output_files; i++) {
    2767           0 :         if (!strcmp(output_files[i]->ctx->oformat->name, "rtp")) {
    2768           0 :             avc[j] = output_files[i]->ctx;
    2769           0 :             j++;
    2770             :         }
    2771             :     }
    2772             : 
    2773           0 :     if (!j)
    2774           0 :         goto fail;
    2775             : 
    2776           0 :     av_sdp_create(avc, j, sdp, sizeof(sdp));
    2777             : 
    2778           0 :     if (!sdp_filename) {
    2779           0 :         printf("SDP:\n%s\n", sdp);
    2780           0 :         fflush(stdout);
    2781             :     } else {
    2782           0 :         if (avio_open2(&sdp_pb, sdp_filename, AVIO_FLAG_WRITE, &int_cb, NULL) < 0) {
    2783           0 :             av_log(NULL, AV_LOG_ERROR, "Failed to open sdp file '%s'\n", sdp_filename);
    2784             :         } else {
    2785           0 :             avio_printf(sdp_pb, "SDP:\n%s", sdp);
    2786           0 :             avio_closep(&sdp_pb);
    2787           0 :             av_freep(&sdp_filename);
    2788             :         }
    2789             :     }
    2790             : 
    2791           0 : fail:
    2792           0 :     av_freep(&avc);
    2793             : }
    2794             : 
    2795         855 : static enum AVPixelFormat get_format(AVCodecContext *s, const enum AVPixelFormat *pix_fmts)
    2796             : {
    2797         855 :     InputStream *ist = s->opaque;
    2798             :     const enum AVPixelFormat *p;
    2799             :     int ret;
    2800             : 
    2801        1636 :     for (p = pix_fmts; *p != AV_PIX_FMT_NONE; p++) {
    2802        1636 :         const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(*p);
    2803        1636 :         const AVCodecHWConfig  *config = NULL;
    2804             :         int i;
    2805             : 
    2806        1636 :         if (!(desc->flags & AV_PIX_FMT_FLAG_HWACCEL))
    2807         855 :             break;
    2808             : 
    2809        1562 :         if (ist->hwaccel_id == HWACCEL_GENERIC ||
    2810         781 :             ist->hwaccel_id == HWACCEL_AUTO) {
    2811           0 :             for (i = 0;; i++) {
    2812           0 :                 config = avcodec_get_hw_config(s->codec, i);
    2813           0 :                 if (!config)
    2814           0 :                     break;
    2815           0 :                 if (!(config->methods &
    2816             :                       AV_CODEC_HW_CONFIG_METHOD_HW_DEVICE_CTX))
    2817           0 :                     continue;
    2818           0 :                 if (config->pix_fmt == *p)
    2819           0 :                     break;
    2820             :             }
    2821             :         }
    2822         781 :         if (config) {
    2823           0 :             if (config->device_type != ist->hwaccel_device_type) {
    2824             :                 // Different hwaccel offered, ignore.
    2825           0 :                 continue;
    2826             :             }
    2827             : 
    2828           0 :             ret = hwaccel_decode_init(s);
    2829           0 :             if (ret < 0) {
    2830           0 :                 if (ist->hwaccel_id == HWACCEL_GENERIC) {
    2831           0 :                     av_log(NULL, AV_LOG_FATAL,
    2832             :                            "%s hwaccel requested for input stream #%d:%d, "
    2833             :                            "but cannot be initialized.\n",
    2834             :                            av_hwdevice_get_type_name(config->device_type),
    2835           0 :                            ist->file_index, ist->st->index);
    2836           0 :                     return AV_PIX_FMT_NONE;
    2837             :                 }
    2838           0 :                 continue;
    2839             :             }
    2840             :         } else {
    2841         781 :             const HWAccel *hwaccel = NULL;
    2842             :             int i;
    2843         781 :             for (i = 0; hwaccels[i].name; i++) {
    2844         781 :                 if (hwaccels[i].pix_fmt == *p) {
    2845         781 :                     hwaccel = &hwaccels[i];
    2846         781 :                     break;
    2847             :                 }
    2848             :             }
    2849         781 :             if (!hwaccel) {
    2850             :                 // No hwaccel supporting this pixfmt.
    2851           0 :                 continue;
    2852             :             }
    2853         781 :             if (hwaccel->id != ist->hwaccel_id) {
    2854             :                 // Does not match requested hwaccel.
    2855         781 :                 continue;
    2856             :             }
    2857             : 
    2858           0 :             ret = hwaccel->init(s);
    2859           0 :             if (ret < 0) {
    2860           0 :                 av_log(NULL, AV_LOG_FATAL,
    2861             :                        "%s hwaccel requested for input stream #%d:%d, "
    2862             :                        "but cannot be initialized.\n", hwaccel->name,
    2863           0 :                        ist->file_index, ist->st->index);
    2864           0 :                 return AV_PIX_FMT_NONE;
    2865             :             }
    2866             :         }
    2867             : 
    2868           0 :         if (ist->hw_frames_ctx) {
    2869           0 :             s->hw_frames_ctx = av_buffer_ref(ist->hw_frames_ctx);
    2870           0 :             if (!s->hw_frames_ctx)
    2871           0 :                 return AV_PIX_FMT_NONE;
    2872             :         }
    2873             : 
    2874           0 :         ist->hwaccel_pix_fmt = *p;
    2875           0 :         break;
    2876             :     }
    2877             : 
    2878         855 :     return *p;
    2879             : }
    2880             : 
    2881      356344 : static int get_buffer(AVCodecContext *s, AVFrame *frame, int flags)
    2882             : {
    2883      356344 :     InputStream *ist = s->opaque;
    2884             : 
    2885      356344 :     if (ist->hwaccel_get_buffer && frame->format == ist->hwaccel_pix_fmt)
    2886           0 :         return ist->hwaccel_get_buffer(s, frame, flags);
    2887             : 
    2888      356344 :     return avcodec_default_get_buffer2(s, frame, flags);
    2889             : }
    2890             : 
    2891        5767 : static int init_input_stream(int ist_index, char *error, int error_len)
    2892             : {
    2893             :     int ret;
    2894        5767 :     InputStream *ist = input_streams[ist_index];
    2895             : 
    2896        5767 :     if (ist->decoding_needed) {
    2897        5323 :         AVCodec *codec = ist->dec;
    2898        5323 :         if (!codec) {
    2899           0 :             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
    2900           0 :                     avcodec_get_name(ist->dec_ctx->codec_id), ist->file_index, ist->st->index);
    2901           0 :             return AVERROR(EINVAL);
    2902             :         }
    2903             : 
    2904        5323 :         ist->dec_ctx->opaque                = ist;
    2905        5323 :         ist->dec_ctx->get_format            = get_format;
    2906        5323 :         ist->dec_ctx->get_buffer2           = get_buffer;
    2907        5323 :         ist->dec_ctx->thread_safe_callbacks = 1;
    2908             : 
    2909        5323 :         av_opt_set_int(ist->dec_ctx, "refcounted_frames", 1, 0);
    2910        5323 :         if (ist->dec_ctx->codec_id == AV_CODEC_ID_DVB_SUBTITLE &&
    2911           0 :            (ist->decoding_needed & DECODING_FOR_OST)) {
    2912           0 :             av_dict_set(&ist->decoder_opts, "compute_edt", "1", AV_DICT_DONT_OVERWRITE);
    2913           0 :             if (ist->decoding_needed & DECODING_FOR_FILTER)
    2914           0 :                 av_log(NULL, AV_LOG_WARNING, "Warning using DVB subtitles for filtering and output at the same time is not fully supported, also see -compute_edt [0|1]\n");
    2915             :         }
    2916             : 
    2917        5323 :         av_dict_set(&ist->decoder_opts, "sub_text_format", "ass", AV_DICT_DONT_OVERWRITE);
    2918             : 
    2919             :         /* Useful for subtitles retiming by lavf (FIXME), skipping samples in
    2920             :          * audio, and video decoders such as cuvid or mediacodec */
    2921        5323 :         ist->dec_ctx->pkt_timebase = ist->st->time_base;
    2922             : 
    2923        5323 :         if (!av_dict_get(ist->decoder_opts, "threads", NULL, 0))
    2924          43 :             av_dict_set(&ist->decoder_opts, "threads", "auto", 0);
    2925             :         /* Attached pics are sparse, therefore we would not want to delay their decoding till EOF. */
    2926        5323 :         if (ist->st->disposition & AV_DISPOSITION_ATTACHED_PIC)
    2927           1 :             av_dict_set(&ist->decoder_opts, "threads", "1", 0);
    2928             : 
    2929        5323 :         ret = hw_device_setup_for_decode(ist);
    2930        5323 :         if (ret < 0) {
    2931           0 :             snprintf(error, error_len, "Device setup failed for "
    2932             :                      "decoder on input stream #%d:%d : %s",
    2933           0 :                      ist->file_index, ist->st->index, av_err2str(ret));
    2934           0 :             return ret;
    2935             :         }
    2936             : 
    2937        5323 :         if ((ret = avcodec_open2(ist->dec_ctx, codec, &ist->decoder_opts)) < 0) {
    2938           0 :             if (ret == AVERROR_EXPERIMENTAL)
    2939           0 :                 abort_codec_experimental(codec, 0);
    2940             : 
    2941           0 :             snprintf(error, error_len,
    2942             :                      "Error while opening decoder for input stream "
    2943             :                      "#%d:%d : %s",
    2944           0 :                      ist->file_index, ist->st->index, av_err2str(ret));
    2945           0 :             return ret;
    2946             :         }
    2947        5323 :         assert_avoptions(ist->decoder_opts);
    2948             :     }
    2949             : 
    2950        5767 :     ist->next_pts = AV_NOPTS_VALUE;
    2951        5767 :     ist->next_dts = AV_NOPTS_VALUE;
    2952             : 
    2953        5767 :     return 0;
    2954             : }
    2955             : 
    2956       16179 : static InputStream *get_input_stream(OutputStream *ost)
    2957             : {
    2958       16179 :     if (ost->source_index >= 0)
    2959       16047 :         return input_streams[ost->source_index];
    2960         132 :     return NULL;
    2961             : }
    2962             : 
    2963           1 : static int compare_int64(const void *a, const void *b)
    2964             : {
    2965           1 :     return FFDIFFSIGN(*(const int64_t *)a, *(const int64_t *)b);
    2966             : }
    2967             : 
    2968             : /* open the muxer when all the streams are initialized */
    2969        5553 : static int check_init_output_file(OutputFile *of, int file_index)
    2970             : {
    2971             :     int ret, i;
    2972             : 
    2973       11220 :     for (i = 0; i < of->ctx->nb_streams; i++) {
    2974        5808 :         OutputStream *ost = output_streams[of->ost_index + i];
    2975        5808 :         if (!ost->initialized)
    2976         141 :             return 0;
    2977             :     }
    2978             : 
    2979        5412 :     of->ctx->interrupt_callback = int_cb;
    2980             : 
    2981        5412 :     ret = avformat_write_header(of->ctx, &of->opts);
    2982        5412 :     if (ret < 0) {
    2983           0 :         av_log(NULL, AV_LOG_ERROR,
    2984             :                "Could not write header for output file #%d "
    2985             :                "(incorrect codec parameters ?): %s\n",
    2986           0 :                file_index, av_err2str(ret));
    2987           0 :         return ret;
    2988             :     }
    2989             :     //assert_avoptions(of->opts);
    2990        5412 :     of->header_written = 1;
    2991             : 
    2992        5412 :     av_dump_format(of->ctx, file_index, of->ctx->filename, 1);
    2993             : 
    2994        5412 :     if (sdp_filename || want_sdp)
    2995           0 :         print_sdp();
    2996             : 
    2997             :     /* flush the muxing queues */
    2998       10964 :     for (i = 0; i < of->ctx->nb_streams; i++) {
    2999        5552 :         OutputStream *ost = output_streams[of->ost_index + i];
    3000             : 
    3001             :         /* try to improve muxing time_base (only possible if nothing has been written yet) */
    3002        5552 :         if (!av_fifo_size(ost->muxing_queue))
    3003        5475 :             ost->mux_timebase = ost->st->time_base;
    3004             : 
    3005       11381 :         while (av_fifo_size(ost->muxing_queue)) {
    3006             :             AVPacket pkt;
    3007         277 :             av_fifo_generic_read(ost->muxing_queue, &pkt, sizeof(pkt), NULL);
    3008         277 :             write_packet(of, &pkt, ost, 1);
    3009             :         }
    3010             :     }
    3011             : 
    3012        5412 :     return 0;
    3013             : }
    3014             : 
    3015        5552 : static int init_output_bsfs(OutputStream *ost)
    3016             : {
    3017             :     AVBSFContext *ctx;
    3018             :     int i, ret;
    3019             : 
    3020        5552 :     if (!ost->nb_bitstream_filters)
    3021        5509 :         return 0;
    3022             : 
    3023          86 :     for (i = 0; i < ost->nb_bitstream_filters; i++) {
    3024          43 :         ctx = ost->bsf_ctx[i];
    3025             : 
    3026          86 :         ret = avcodec_parameters_copy(ctx->par_in,
    3027          43 :                                       i ? ost->bsf_ctx[i - 1]->par_out : ost->st->codecpar);
    3028          43 :         if (ret < 0)
    3029           0 :             return ret;
    3030             : 
    3031          43 :         ctx->time_base_in = i ? ost->bsf_ctx[i - 1]->time_base_out : ost->st->time_base;
    3032             : 
    3033          43 :         ret = av_bsf_init(ctx);
    3034          43 :         if (ret < 0) {
    3035           0 :             av_log(NULL, AV_LOG_ERROR, "Error initializing bitstream filter: %s\n",
    3036           0 :                    ost->bsf_ctx[i]->filter->name);
    3037           0 :             return ret;
    3038             :         }
    3039             :     }
    3040             : 
    3041          43 :     ctx = ost->bsf_ctx[ost->nb_bitstream_filters - 1];
    3042          43 :     ret = avcodec_parameters_copy(ost->st->codecpar, ctx->par_out);
    3043          43 :     if (ret < 0)
    3044           0 :         return ret;
    3045             : 
    3046          43 :     ost->st->time_base = ctx->time_base_out;
    3047             : 
    3048          43 :     return 0;
    3049             : }
    3050             : 
    3051         222 : static int init_output_stream_streamcopy(OutputStream *ost)
    3052             : {
    3053         222 :     OutputFile *of = output_files[ost->file_index];
    3054         222 :     InputStream *ist = get_input_stream(ost);
    3055         222 :     AVCodecParameters *par_dst = ost->st->codecpar;
    3056         222 :     AVCodecParameters *par_src = ost->ref_par;
    3057             :     AVRational sar;
    3058             :     int i, ret;
    3059         222 :     uint32_t codec_tag = par_dst->codec_tag;
    3060             : 
    3061         222 :     av_assert0(ist && !ost->filter);
    3062             : 
    3063         222 :     ret = avcodec_parameters_to_context(ost->enc_ctx, ist->st->codecpar);
    3064         222 :     if (ret >= 0)
    3065         222 :         ret = av_opt_set_dict(ost->enc_ctx, &ost->encoder_opts);
    3066         222 :     if (ret < 0) {
    3067           0 :         av_log(NULL, AV_LOG_FATAL,
    3068             :                "Error setting up codec context options.\n");
    3069           0 :         return ret;
    3070             :     }
    3071         222 :     avcodec_parameters_from_context(par_src, ost->enc_ctx);
    3072             : 
    3073         222 :     if (!codec_tag) {
    3074             :         unsigned int codec_tag_tmp;
    3075         249 :         if (!of->ctx->oformat->codec_tag ||
    3076          39 :             av_codec_get_id (of->ctx->oformat->codec_tag, par_src->codec_tag) == par_src->codec_id ||
    3077          12 :             !av_codec_get_tag2(of->ctx->oformat->codec_tag, par_src->codec_id, &codec_tag_tmp))
    3078         213 :             codec_tag = par_src->codec_tag;
    3079             :     }
    3080             : 
    3081         222 :     ret = avcodec_parameters_copy(par_dst, par_src);
    3082         222 :     if (ret < 0)
    3083           0 :         return ret;
    3084             : 
    3085         222 :     par_dst->codec_tag = codec_tag;
    3086             : 
    3087         222 :     if (!ost->frame_rate.num)
    3088         221 :         ost->frame_rate = ist->framerate;
    3089         222 :     ost->st->avg_frame_rate = ost->frame_rate;
    3090             : 
    3091         222 :     ret = avformat_transfer_internal_stream_timing_info(of->ctx->oformat, ost->st, ist->st, copy_tb);
    3092         222 :     if (ret < 0)
    3093           0 :         return ret;
    3094             : 
    3095             :     // copy timebase while removing common factors
    3096         222 :     if (ost->st->time_base.num <= 0 || ost->st->time_base.den <= 0)
    3097         221 :         ost->st->time_base = av_add_q(av_stream_get_codec_timebase(ost->st), (AVRational){0, 1});
    3098             : 
    3099             :     // copy estimated duration as a hint to the muxer
    3100         222 :     if (ost->st->duration <= 0 && ist->st->duration > 0)
    3101         131 :         ost->st->duration = av_rescale_q(ist->st->duration, ist->st->time_base, ost->st->time_base);
    3102             : 
    3103             :     // copy disposition
    3104         222 :     ost->st->disposition = ist->st->disposition;
    3105             : 
    3106         222 :     if (ist->st->nb_side_data) {
    3107           8 :         for (i = 0; i < ist->st->nb_side_data; i++) {
    3108           4 :             const AVPacketSideData *sd_src = &ist->st->side_data[i];
    3109             :             uint8_t *dst_data;
    3110             : 
    3111           4 :             dst_data = av_stream_new_side_data(ost->st, sd_src->type, sd_src->size);
    3112           4 :             if (!dst_data)
    3113           0 :                 return AVERROR(ENOMEM);
    3114           4 :             memcpy(dst_data, sd_src->data, sd_src->size);
    3115             :         }
    3116             :     }
    3117             : 
    3118         222 :     if (ost->rotate_overridden) {
    3119           1 :         uint8_t *sd = av_stream_new_side_data(ost->st, AV_PKT_DATA_DISPLAYMATRIX,
    3120             :                                               sizeof(int32_t) * 9);
    3121           1 :         if (sd)
    3122           1 :             av_display_rotation_set((int32_t *)sd, -ost->rotate_override_value);
    3123             :     }
    3124             : 
    3125         222 :     ost->parser = av_parser_init(par_dst->codec_id);
    3126         222 :     ost->parser_avctx = avcodec_alloc_context3(NULL);
    3127         222 :     if (!ost->parser_avctx)
    3128           0 :         return AVERROR(ENOMEM);
    3129             : 
    3130         222 :     switch (par_dst->codec_type) {
    3131          89 :     case AVMEDIA_TYPE_AUDIO:
    3132          89 :         if (audio_volume != 256) {
    3133           0 :             av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
    3134           0 :             exit_program(1);
    3135             :         }
    3136          89 :         if((par_dst->block_align == 1 || par_dst->block_align == 1152 || par_dst->block_align == 576) && par_dst->codec_id == AV_CODEC_ID_MP3)
    3137           0 :             par_dst->block_align= 0;
    3138          89 :         if(par_dst->codec_id == AV_CODEC_ID_AC3)
    3139           2 :             par_dst->block_align= 0;
    3140          89 :         break;
    3141         117 :     case AVMEDIA_TYPE_VIDEO:
    3142         117 :         if (ost->frame_aspect_ratio.num) { // overridden by the -aspect cli option
    3143           0 :             sar =
    3144             :                 av_mul_q(ost->frame_aspect_ratio,
    3145           0 :                          (AVRational){ par_dst->height, par_dst->width });
    3146           0 :             av_log(NULL, AV_LOG_WARNING, "Overriding aspect ratio "
    3147             :                    "with stream copy may produce invalid files\n");
    3148             :             }
    3149         117 :         else if (ist->st->sample_aspect_ratio.num)
    3150          29 :             sar = ist->st->sample_aspect_ratio;
    3151             :         else
    3152          88 :             sar = par_src->sample_aspect_ratio;
    3153         117 :         ost->st->sample_aspect_ratio = par_dst->sample_aspect_ratio = sar;
    3154         117 :         ost->st->avg_frame_rate = ist->st->avg_frame_rate;
    3155         117 :         ost->st->r_frame_rate = ist->st->r_frame_rate;
    3156         117 :         break;
    3157             :     }
    3158             : 
    3159         222 :     ost->mux_timebase = ist->st->time_base;
    3160             : 
    3161         222 :     return 0;
    3162             : }
    3163             : 
    3164        5329 : static void set_encoder_id(OutputFile *of, OutputStream *ost)
    3165             : {
    3166             :     AVDictionaryEntry *e;
    3167             : 
    3168             :     uint8_t *encoder_string;
    3169             :     int encoder_string_len;
    3170        5329 :     int format_flags = 0;
    3171        5329 :     int codec_flags = ost->enc_ctx->flags;
    3172             : 
    3173        5329 :     if (av_dict_get(ost->st->metadata, "encoder",  NULL, 0))
    3174           0 :         return;
    3175             : 
    3176        5329 :     e = av_dict_get(of->opts, "fflags", NULL, 0);
    3177        5329 :     if (e) {
    3178        2990 :         const AVOption *o = av_opt_find(of->ctx, "fflags", NULL, 0, 0);
    3179        2990 :         if (!o)
    3180           0 :             return;
    3181        2990 :         av_opt_eval_flags(of->ctx, o, e->value, &format_flags);
    3182             :     }
    3183        5329 :     e = av_dict_get(ost->encoder_opts, "flags", NULL, 0);
    3184        5329 :     if (e) {
    3185        2978 :         const AVOption *o = av_opt_find(ost->enc_ctx, "flags", NULL, 0, 0);
    3186        2978 :         if (!o)
    3187           0 :             return;
    3188        2978 :         av_opt_eval_flags(ost->enc_ctx, o, e->value, &codec_flags);
    3189             :     }
    3190             : 
    3191        5329 :     encoder_string_len = sizeof(LIBAVCODEC_IDENT) + strlen(ost->enc->name) + 2;
    3192        5329 :     encoder_string     = av_mallocz(encoder_string_len);
    3193        5329 :     if (!encoder_string)
    3194           0 :         exit_program(1);
    3195             : 
    3196        5329 :     if (!(format_flags & AVFMT_FLAG_BITEXACT) && !(codec_flags & AV_CODEC_FLAG_BITEXACT))
    3197         803 :         av_strlcpy(encoder_string, LIBAVCODEC_IDENT " ", encoder_string_len);
    3198             :     else
    3199        4526 :         av_strlcpy(encoder_string, "Lavc ", encoder_string_len);
    3200        5329 :     av_strlcat(encoder_string, ost->enc->name, encoder_string_len);
    3201        5329 :     av_dict_set(&ost->st->metadata, "encoder",  encoder_string,
    3202             :                 AV_DICT_DONT_STRDUP_VAL | AV_DICT_DONT_OVERWRITE);
    3203             : }
    3204             : 
    3205           1 : static void parse_forced_key_frames(char *kf, OutputStream *ost,
    3206             :                                     AVCodecContext *avctx)
    3207             : {
    3208             :     char *p;
    3209           1 :     int n = 1, i, size, index = 0;
    3210             :     int64_t t, *pts;
    3211             : 
    3212          14 :     for (p = kf; *p; p++)
    3213          13 :         if (*p == ',')
    3214           1 :             n++;
    3215           1 :     size = n;
    3216           1 :     pts = av_malloc_array(size, sizeof(*pts));
    3217           1 :     if (!pts) {
    3218           0 :         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
    3219           0 :         exit_program(1);
    3220             :     }
    3221             : 
    3222           1 :     p = kf;
    3223           3 :     for (i = 0; i < n; i++) {
    3224           2 :         char *next = strchr(p, ',');
    3225             : 
    3226           2 :         if (next)
    3227           1 :             *next++ = 0;
    3228             : 
    3229           2 :         if (!memcmp(p, "chapters", 8)) {
    3230             : 
    3231           0 :             AVFormatContext *avf = output_files[ost->file_index]->ctx;
    3232             :             int j;
    3233             : 
    3234           0 :             if (avf->nb_chapters > INT_MAX - size ||
    3235           0 :                 !(pts = av_realloc_f(pts, size += avf->nb_chapters - 1,
    3236             :                                      sizeof(*pts)))) {
    3237           0 :                 av_log(NULL, AV_LOG_FATAL,
    3238             :                        "Could not allocate forced key frames array.\n");
    3239           0 :                 exit_program(1);
    3240             :             }
    3241           0 :             t = p[8] ? parse_time_or_die("force_key_frames", p + 8, 1) : 0;
    3242           0 :             t = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
    3243             : 
    3244           0 :             for (j = 0; j < avf->nb_chapters; j++) {
    3245           0 :                 AVChapter *c = avf->chapters[j];
    3246             :                 av_assert1(index < size);
    3247           0 :                 pts[index++] = av_rescale_q(c->start, c->time_base,
    3248           0 :                                             avctx->time_base) + t;
    3249             :             }
    3250             : 
    3251             :         } else {
    3252             : 
    3253           2 :             t = parse_time_or_die("force_key_frames", p, 1);
    3254             :             av_assert1(index < size);
    3255           2 :             pts[index++] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
    3256             : 
    3257             :         }
    3258             : 
    3259           2 :         p = next;
    3260             :     }
    3261             : 
    3262           1 :     av_assert0(index == size);
    3263           1 :     qsort(pts, size, sizeof(*pts), compare_int64);
    3264           1 :     ost->forced_kf_count = size;
    3265           1 :     ost->forced_kf_pts   = pts;
    3266           1 : }
    3267             : 
    3268        5299 : static void init_encoder_time_base(OutputStream *ost, AVRational default_time_base)
    3269             : {
    3270        5299 :     InputStream *ist = get_input_stream(ost);
    3271        5299 :     AVCodecContext *enc_ctx = ost->enc_ctx;
    3272             :     AVFormatContext *oc;
    3273             : 
    3274        5299 :     if (ost->enc_timebase.num > 0) {
    3275           0 :         enc_ctx->time_base = ost->enc_timebase;
    3276           0 :         return;
    3277             :     }
    3278             : 
    3279        5299 :     if (ost->enc_timebase.num < 0) {
    3280           0 :         if (ist) {
    3281           0 :             enc_ctx->time_base = ist->st->time_base;
    3282           0 :             return;
    3283             :         }
    3284             : 
    3285           0 :         oc = output_files[ost->file_index]->ctx;
    3286           0 :         av_log(oc, AV_LOG_WARNING, "Input stream data not available, using default time base\n");
    3287             :     }
    3288             : 
    3289        5299 :     enc_ctx->time_base = default_time_base;
    3290             : }
    3291             : 
    3292        5329 : static int init_output_stream_encode(OutputStream *ost)
    3293             : {
    3294        5329 :     InputStream *ist = get_input_stream(ost);
    3295        5329 :     AVCodecContext *enc_ctx = ost->enc_ctx;
    3296        5329 :     AVCodecContext *dec_ctx = NULL;
    3297        5329 :     AVFormatContext *oc = output_files[ost->file_index]->ctx;
    3298             :     int j, ret;
    3299             : 
    3300        5329 :     set_encoder_id(output_files[ost->file_index], ost);
    3301             : 
    3302             :     // Muxers use AV_PKT_DATA_DISPLAYMATRIX to signal rotation. On the other
    3303             :     // hand, the legacy API makes demuxers set "rotate" metadata entries,
    3304             :     // which have to be filtered out to prevent leaking them to output files.
    3305        5329 :     av_dict_set(&ost->st->metadata, "rotate", NULL, 0);
    3306             : 
    3307        5329 :     if (ist) {
    3308        5285 :         ost->st->disposition          = ist->st->disposition;
    3309             : 
    3310        5285 :         dec_ctx = ist->dec_ctx;
    3311             : 
    3312        5285 :         enc_ctx->chroma_sample_location = dec_ctx->chroma_sample_location;
    3313             :     } else {
    3314          92 :         for (j = 0; j < oc->nb_streams; j++) {
    3315          48 :             AVStream *st = oc->streams[j];
    3316          48 :             if (st != ost->st && st->codecpar->codec_type == ost->st->codecpar->codec_type)
    3317           0 :                 break;
    3318             :         }
    3319          44 :         if (j == oc->nb_streams)
    3320          80 :             if (ost->st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO ||
    3321          36 :                 ost->st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
    3322          44 :                 ost->st->disposition = AV_DISPOSITION_DEFAULT;
    3323             :     }
    3324             : 
    3325        5329 :     if (enc_ctx->codec_type == AVMEDIA_TYPE_VIDEO) {
    3326        4234 :         if (!ost->frame_rate.num)
    3327        4215 :             ost->frame_rate = av_buffersink_get_frame_rate(ost->filter->filter);
    3328        4234 :         if (ist && !ost->frame_rate.num)
    3329           0 :             ost->frame_rate = ist->framerate;
    3330        4234 :         if (ist && !ost->frame_rate.num)
    3331           0 :             ost->frame_rate = ist->st->r_frame_rate;
    3332        4234 :         if (ist && !ost->frame_rate.num) {
    3333           0 :             ost->frame_rate = (AVRational){25, 1};
    3334           0 :             av_log(NULL, AV_LOG_WARNING,
    3335             :                    "No information "
    3336             :                    "about the input framerate is available. Falling "
    3337             :                    "back to a default value of 25fps for output stream #%d:%d. Use the -r option "
    3338             :                    "if you want a different framerate.\n",
    3339             :                    ost->file_index, ost->index);
    3340             :         }
    3341             : //      ost->frame_rate = ist->st->avg_frame_rate.num ? ist->st->avg_frame_rate : (AVRational){25, 1};
    3342        4234 :         if (ost->enc->supported_framerates && !ost->force_fps) {
    3343          49 :             int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
    3344          49 :             ost->frame_rate = ost->enc->supported_framerates[idx];
    3345             :         }
    3346             :         // reduce frame rate for mpeg4 to be within the spec limits
    3347        4234 :         if (enc_ctx->codec_id == AV_CODEC_ID_MPEG4) {
    3348         116 :             av_reduce(&ost->frame_rate.num, &ost->frame_rate.den,
    3349         116 :                       ost->frame_rate.num, ost->frame_rate.den, 65535);
    3350             :         }
    3351             :     }
    3352             : 
    3353        5329 :     switch (enc_ctx->codec_type) {
    3354        1065 :     case AVMEDIA_TYPE_AUDIO:
    3355        1065 :         enc_ctx->sample_fmt     = av_buffersink_get_format(ost->filter->filter);
    3356        1065 :         if (dec_ctx)
    3357        1057 :             enc_ctx->bits_per_raw_sample = FFMIN(dec_ctx->bits_per_raw_sample,
    3358             :                                                  av_get_bytes_per_sample(enc_ctx->sample_fmt) << 3);
    3359        1065 :         enc_ctx->sample_rate    = av_buffersink_get_sample_rate(ost->filter->filter);
    3360        1065 :         enc_ctx->channel_layout = av_buffersink_get_channel_layout(ost->filter->filter);
    3361        1065 :         enc_ctx->channels       = av_buffersink_get_channels(ost->filter->filter);
    3362             : 
    3363        1065 :         init_encoder_time_base(ost, av_make_q(1, enc_ctx->sample_rate));
    3364        1065 :         break;
    3365             : 
    3366        4234 :     case AVMEDIA_TYPE_VIDEO:
    3367        4234 :         init_encoder_time_base(ost, av_inv_q(ost->frame_rate));
    3368             : 
    3369        4234 :         if (!(enc_ctx->time_base.num && enc_ctx->time_base.den))
    3370           0 :             enc_ctx->time_base = av_buffersink_get_time_base(ost->filter->filter);
    3371        4234 :         if (   av_q2d(enc_ctx->time_base) < 0.001 && video_sync_method != VSYNC_PASSTHROUGH
    3372           3 :            && (video_sync_method == VSYNC_CFR || video_sync_method == VSYNC_VSCFR || (video_sync_method == VSYNC_AUTO && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
    3373           0 :             av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not efficiently supporting it.\n"
    3374             :                                        "Please consider specifying a lower framerate, a different muxer or -vsync 2\n");
    3375             :         }
    3376        4234 :         for (j = 0; j < ost->forced_kf_count; j++)
    3377           0 :             ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
    3378           0 :                                                  AV_TIME_BASE_Q,
    3379             :                                                  enc_ctx->time_base);
    3380             : 
    3381        4234 :         enc_ctx->width  = av_buffersink_get_w(ost->filter->filter);
    3382        4234 :         enc_ctx->height = av_buffersink_get_h(ost->filter->filter);
    3383        8468 :         enc_ctx->sample_aspect_ratio = ost->st->sample_aspect_ratio =
    3384        4234 :             ost->frame_aspect_ratio.num ? // overridden by the -aspect cli option
    3385        8468 :             av_mul_q(ost->frame_aspect_ratio, (AVRational){ enc_ctx->height, enc_ctx->width }) :
    3386        4234 :             av_buffersink_get_sample_aspect_ratio(ost->filter->filter);
    3387             : 
    3388        4234 :         enc_ctx->pix_fmt = av_buffersink_get_format(ost->filter->filter);
    3389        4234 :         if (dec_ctx)
    3390        4198 :             enc_ctx->bits_per_raw_sample = FFMIN(dec_ctx->bits_per_raw_sample,
    3391             :                                                  av_pix_fmt_desc_get(enc_ctx->pix_fmt)->comp[0].depth);
    3392             : 
    3393        4234 :         enc_ctx->framerate = ost->frame_rate;
    3394             : 
    3395        4234 :         ost->st->avg_frame_rate = ost->frame_rate;
    3396             : 
    3397        8432 :         if (!dec_ctx ||
    3398        7809 :             enc_ctx->width   != dec_ctx->width  ||
    3399        7022 :             enc_ctx->height  != dec_ctx->height ||
    3400        3411 :             enc_ctx->pix_fmt != dec_ctx->pix_fmt) {
    3401        2668 :             enc_ctx->bits_per_raw_sample = frame_bits_per_raw_sample;
    3402             :         }
    3403             : 
    3404        4234 :         if (ost->forced_keyframes) {
    3405           1 :             if (!strncmp(ost->forced_keyframes, "expr:", 5)) {
    3406           0 :                 ret = av_expr_parse(&ost->forced_keyframes_pexpr, ost->forced_keyframes+5,
    3407             :                                     forced_keyframes_const_names, NULL, NULL, NULL, NULL, 0, NULL);
    3408           0 :                 if (ret < 0) {
    3409           0 :                     av_log(NULL, AV_LOG_ERROR,
    3410           0 :                            "Invalid force_key_frames expression '%s'\n", ost->forced_keyframes+5);
    3411           0 :                     return ret;
    3412             :                 }
    3413           0 :                 ost->forced_keyframes_expr_const_values[FKF_N] = 0;
    3414           0 :                 ost->forced_keyframes_expr_const_values[FKF_N_FORCED] = 0;
    3415           0 :                 ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N] = NAN;
    3416           0 :                 ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T] = NAN;
    3417             : 
    3418             :             // Don't parse the 'forced_keyframes' in case of 'keep-source-keyframes',
    3419             :             // parse it only for static kf timings
    3420           1 :             } else if(strncmp(ost->forced_keyframes, "source", 6)) {
    3421           1 :                 parse_forced_key_frames(ost->forced_keyframes, ost, ost->enc_ctx);
    3422             :             }
    3423             :         }
    3424        4234 :         break;
    3425          30 :     case AVMEDIA_TYPE_SUBTITLE:
    3426          30 :         enc_ctx->time_base = AV_TIME_BASE_Q;
    3427          30 :         if (!enc_ctx->width) {
    3428          30 :             enc_ctx->width     = input_streams[ost->source_index]->st->codecpar->width;
    3429          30 :             enc_ctx->height    = input_streams[ost->source_index]->st->codecpar->height;
    3430             :         }
    3431          30 :         break;
    3432           0 :     case AVMEDIA_TYPE_DATA:
    3433           0 :         break;
    3434           0 :     default:
    3435           0 :         abort();
    3436             :         break;
    3437             :     }
    3438             : 
    3439        5329 :     ost->mux_timebase = enc_ctx->time_base;
    3440             : 
    3441        5329 :     return 0;
    3442             : }
    3443             : 
    3444        5552 : static int init_output_stream(OutputStream *ost, char *error, int error_len)
    3445             : {
    3446        5552 :     int ret = 0;
    3447             : 
    3448        5552 :     if (ost->encoding_needed) {
    3449        5329 :         AVCodec      *codec = ost->enc;
    3450        5329 :         AVCodecContext *dec = NULL;
    3451             :         InputStream *ist;
    3452             : 
    3453        5329 :         ret = init_output_stream_encode(ost);
    3454        5329 :         if (ret < 0)
    3455           0 :             return ret;
    3456             : 
    3457        5329 :         if ((ist = get_input_stream(ost)))
    3458        5285 :             dec = ist->dec_ctx;
    3459        5329 :         if (dec && dec->subtitle_header) {
    3460             :             /* ASS code assumes this buffer is null terminated so add extra byte. */
    3461          29 :             ost->enc_ctx->subtitle_header = av_mallocz(dec->subtitle_header_size + 1);
    3462          29 :             if (!ost->enc_ctx->subtitle_header)
    3463           0 :                 return AVERROR(ENOMEM);
    3464          29 :             memcpy(ost->enc_ctx->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
    3465          29 :             ost->enc_ctx->subtitle_header_size = dec->subtitle_header_size;
    3466             :         }
    3467        5329 :         if (!av_dict_get(ost->encoder_opts, "threads", NULL, 0))
    3468        2402 :             av_dict_set(&ost->encoder_opts, "threads", "auto", 0);
    3469        6394 :         if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
    3470        2090 :             !codec->defaults &&
    3471        1985 :             !av_dict_get(ost->encoder_opts, "b", NULL, 0) &&
    3472         960 :             !av_dict_get(ost->encoder_opts, "ab", NULL, 0))
    3473         960 :             av_dict_set(&ost->encoder_opts, "b", "128000", 0);
    3474             : 
    3475        5329 :         if (ost->filter && av_buffersink_get_hw_frames_ctx(ost->filter->filter) &&
    3476           0 :             ((AVHWFramesContext*)av_buffersink_get_hw_frames_ctx(ost->filter->filter)->data)->format ==
    3477           0 :             av_buffersink_get_format(ost->filter->filter)) {
    3478           0 :             ost->enc_ctx->hw_frames_ctx = av_buffer_ref(av_buffersink_get_hw_frames_ctx(ost->filter->filter));
    3479           0 :             if (!ost->enc_ctx->hw_frames_ctx)
    3480           0 :                 return AVERROR(ENOMEM);
    3481             :         } else {
    3482        5329 :             ret = hw_device_setup_for_encode(ost);
    3483        5329 :             if (ret < 0) {
    3484           0 :                 snprintf(error, error_len, "Device setup failed for "
    3485             :                          "encoder on output stream #%d:%d : %s",
    3486           0 :                      ost->file_index, ost->index, av_err2str(ret));
    3487           0 :                 return ret;
    3488             :             }
    3489             :         }
    3490             : 
    3491        5329 :         if ((ret = avcodec_open2(ost->enc_ctx, codec, &ost->encoder_opts)) < 0) {
    3492           0 :             if (ret == AVERROR_EXPERIMENTAL)
    3493           0 :                 abort_codec_experimental(codec, 1);
    3494           0 :             snprintf(error, error_len,
    3495             :                      "Error while opening encoder for output stream #%d:%d - "
    3496             :                      "maybe incorrect parameters such as bit_rate, rate, width or height",
    3497             :                     ost->file_index, ost->index);
    3498           0 :             return ret;
    3499             :         }
    3500        6394 :         if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
    3501        1065 :             !(ost->enc->capabilities & AV_CODEC_CAP_VARIABLE_FRAME_SIZE))
    3502          87 :             av_buffersink_set_frame_size(ost->filter->filter,
    3503          87 :                                             ost->enc_ctx->frame_size);
    3504        5329 :         assert_avoptions(ost->encoder_opts);
    3505        5329 :         if (ost->enc_ctx->bit_rate && ost->enc_ctx->bit_rate < 1000)
    3506           0 :             av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
    3507             :                                          " It takes bits/s as argument, not kbits/s\n");
    3508             : 
    3509        5329 :         ret = avcodec_parameters_from_context(ost->st->codecpar, ost->enc_ctx);
    3510        5329 :         if (ret < 0) {
    3511           0 :             av_log(NULL, AV_LOG_FATAL,
    3512             :                    "Error initializing the output stream codec context.\n");
    3513           0 :             exit_program(1);
    3514             :         }
    3515             :         /*
    3516             :          * FIXME: ost->st->codec should't be needed here anymore.
    3517             :          */
    3518        5329 :         ret = avcodec_copy_context(ost->st->codec, ost->enc_ctx);
    3519        5329 :         if (ret < 0)
    3520           0 :             return ret;
    3521             : 
    3522        5329 :         if (ost->enc_ctx->nb_coded_side_data) {
    3523             :             int i;
    3524             : 
    3525         366 :             for (i = 0; i < ost->enc_ctx->nb_coded_side_data; i++) {
    3526         183 :                 const AVPacketSideData *sd_src = &ost->enc_ctx->coded_side_data[i];
    3527             :                 uint8_t *dst_data;
    3528             : 
    3529         183 :                 dst_data = av_stream_new_side_data(ost->st, sd_src->type, sd_src->size);
    3530         183 :                 if (!dst_data)
    3531           0 :                     return AVERROR(ENOMEM);
    3532         183 :                 memcpy(dst_data, sd_src->data, sd_src->size);
    3533             :             }
    3534             :         }
    3535             : 
    3536             :         /*
    3537             :          * Add global input side data. For now this is naive, and copies it
    3538             :          * from the input stream's global side data. All side data should
    3539             :          * really be funneled over AVFrame and libavfilter, then added back to
    3540             :          * packet side data, and then potentially using the first packet for
    3541             :          * global side data.
    3542             :          */
    3543        5329 :         if (ist) {
    3544             :             int i;
    3545        5494 :             for (i = 0; i < ist->st->nb_side_data; i++) {
    3546         209 :                 AVPacketSideData *sd = &ist->st->side_data[i];
    3547         209 :                 uint8_t *dst = av_stream_new_side_data(ost->st, sd->type, sd->size);
    3548         209 :                 if (!dst)
    3549           0 :                     return AVERROR(ENOMEM);
    3550         209 :                 memcpy(dst, sd->data, sd->size);
    3551         209 :                 if (ist->autorotate && sd->type == AV_PKT_DATA_DISPLAYMATRIX)
    3552           0 :                     av_display_rotation_set((uint32_t *)dst, 0);
    3553             :             }
    3554             :         }
    3555             : 
    3556             :         // copy timebase while removing common factors
    3557        5329 :         if (ost->st->time_base.num <= 0 || ost->st->time_base.den <= 0)
    3558        5329 :             ost->st->time_base = av_add_q(ost->enc_ctx->time_base, (AVRational){0, 1});
    3559             : 
    3560             :         // copy estimated duration as a hint to the muxer
    3561        5329 :         if (ost->st->duration <= 0 && ist && ist->st->duration > 0)
    3562        4184 :             ost->st->duration = av_rescale_q(ist->st->duration, ist->st->time_base, ost->st->time_base);
    3563             : 
    3564        5329 :         ost->st->codec->codec= ost->enc_ctx->codec;
    3565         223 :     } else if (ost->stream_copy) {
    3566         222 :         ret = init_output_stream_streamcopy(ost);
    3567         222 :         if (ret < 0)
    3568           0 :             return ret;
    3569             : 
    3570             :         /*
    3571             :          * FIXME: will the codec context used by the parser during streamcopy
    3572             :          * This should go away with the new parser API.
    3573             :          */
    3574         222 :         ret = avcodec_parameters_to_context(ost->parser_avctx, ost->st->codecpar);
    3575         222 :         if (ret < 0)
    3576           0 :             return ret;
    3577             :     }
    3578             : 
    3579             :     // parse user provided disposition, and update stream values
    3580        5552 :     if (ost->disposition) {
    3581             :         static const AVOption opts[] = {
    3582             :             { "disposition"         , NULL, 0, AV_OPT_TYPE_FLAGS, { .i64 = 0 }, INT64_MIN, INT64_MAX, .unit = "flags" },
    3583             :             { "default"             , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_DEFAULT           },    .unit = "flags" },
    3584             :             { "dub"                 , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_DUB               },    .unit = "flags" },
    3585             :             { "original"            , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_ORIGINAL          },    .unit = "flags" },
    3586             :             { "comment"             , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_COMMENT           },    .unit = "flags" },
    3587             :             { "lyrics"              , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_LYRICS            },    .unit = "flags" },
    3588             :             { "karaoke"             , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_KARAOKE           },    .unit = "flags" },
    3589             :             { "forced"              , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_FORCED            },    .unit = "flags" },
    3590             :             { "hearing_impaired"    , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_HEARING_IMPAIRED  },    .unit = "flags" },
    3591             :             { "visual_impaired"     , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_VISUAL_IMPAIRED   },    .unit = "flags" },
    3592             :             { "clean_effects"       , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_CLEAN_EFFECTS     },    .unit = "flags" },
    3593             :             { "captions"            , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_CAPTIONS          },    .unit = "flags" },
    3594             :             { "descriptions"        , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_DESCRIPTIONS      },    .unit = "flags" },
    3595             :             { "metadata"            , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_METADATA          },    .unit = "flags" },
    3596             :             { NULL },
    3597             :         };
    3598             :         static const AVClass class = {
    3599             :             .class_name = "",
    3600             :             .item_name  = av_default_item_name,
    3601             :             .option     = opts,
    3602             :             .version    = LIBAVUTIL_VERSION_INT,
    3603             :         };
    3604           0 :         const AVClass *pclass = &class;
    3605             : 
    3606           0 :         ret = av_opt_eval_flags(&pclass, &opts[0], ost->disposition, &ost->st->disposition);
    3607           0 :         if (ret < 0)
    3608           0 :             return ret;
    3609             :     }
    3610             : 
    3611             :     /* initialize bitstream filters for the output stream
    3612             :      * needs to be done here, because the codec id for streamcopy is not
    3613             :      * known until now */
    3614        5552 :     ret = init_output_bsfs(ost);
    3615        5552 :     if (ret < 0)
    3616           0 :         return ret;
    3617             : 
    3618        5552 :     ost->initialized = 1;
    3619             : 
    3620        5552 :     ret = check_init_output_file(output_files[ost->file_index], ost->file_index);
    3621        5552 :     if (ret < 0)
    3622           0 :         return ret;
    3623             : 
    3624        5552 :     return ret;
    3625             : }
    3626             : 
    3627           0 : static void report_new_stream(int input_index, AVPacket *pkt)
    3628             : {
    3629           0 :     InputFile *file = input_files[input_index];
    3630           0 :     AVStream *st = file->ctx->streams[pkt->stream_index];
    3631             : 
    3632           0 :     if (pkt->stream_index < file->nb_streams_warn)
    3633           0 :         return;
    3634           0 :     av_log(file->ctx, AV_LOG_WARNING,
    3635             :            "New %s stream %d:%d at pos:%"PRId64" and DTS:%ss\n",
    3636           0 :            av_get_media_type_string(st->codecpar->codec_type),
    3637             :            input_index, pkt->stream_index,
    3638           0 :            pkt->pos, av_ts2timestr(pkt->dts, &st->time_base));
    3639           0 :     file->nb_streams_warn = pkt->stream_index + 1;
    3640             : }
    3641             : 
    3642        5411 : static int transcode_init(void)
    3643             : {
    3644        5411 :     int ret = 0, i, j, k;
    3645             :     AVFormatContext *oc;
    3646             :     OutputStream *ost;
    3647             :     InputStream *ist;
    3648        5411 :     char error[1024] = {0};
    3649             : 
    3650       10708 :     for (i = 0; i < nb_filtergraphs; i++) {
    3651        5297 :         FilterGraph *fg = filtergraphs[i];
    3652       10596 :         for (j = 0; j < fg->nb_outputs; j++) {
    3653        5299 :             OutputFilter *ofilter = fg->outputs[j];
    3654        5299 :             if (!ofilter->ost || ofilter->ost->source_index >= 0)
    3655        5239 :                 continue;
    3656          60 :             if (fg->nb_inputs != 1)
    3657          44 :                 continue;
    3658          17 :             for (k = nb_input_streams-1; k >= 0 ; k--)
    3659          17 :                 if (fg->inputs[0]->ist == input_streams[k])
    3660          16 :                     break;
    3661          16 :             ofilter->ost->source_index = k;
    3662             :         }
    3663             :     }
    3664             : 
    3665             :     /* init framerate emulation */
    3666       10869 :     for (i = 0; i < nb_input_files; i++) {
    3667        5458 :         InputFile *ifile = input_files[i];
    3668        5458 :         if (ifile->rate_emu)
    3669           0 :             for (j = 0; j < ifile->nb_streams; j++)
    3670           0 :                 input_streams[j + ifile->ist_index]->start = av_gettime_relative();
    3671             :     }
    3672             : 
    3673             :     /* init input streams */
    3674       11178 :     for (i = 0; i < nb_input_streams; i++)
    3675        5767 :         if ((ret = init_input_stream(i, error, sizeof(error))) < 0) {
    3676           0 :             for (i = 0; i < nb_output_streams; i++) {
    3677           0 :                 ost = output_streams[i];
    3678           0 :                 avcodec_close(ost->enc_ctx);
    3679             :             }
    3680           0 :             goto dump_format;
    3681             :         }
    3682             : 
    3683             :     /* open each encoder */
    3684       10963 :     for (i = 0; i < nb_output_streams; i++) {
    3685             :         // skip streams fed from filtergraphs until we have a frame for them
    3686        5552 :         if (output_streams[i]->filter)
    3687        5299 :             continue;
    3688             : 
    3689         253 :         ret = init_output_stream(output_streams[i], error, sizeof(error));
    3690         253 :         if (ret < 0)
    3691           0 :             goto dump_format;
    3692             :     }
    3693             : 
    3694             :     /* discard unused programs */
    3695       10869 :     for (i = 0; i < nb_input_files; i++) {
    3696        5458 :         InputFile *ifile = input_files[i];
    3697        5483 :         for (j = 0; j < ifile->ctx->nb_programs; j++) {
    3698          25 :             AVProgram *p = ifile->ctx->programs[j];
    3699          25 :             int discard  = AVDISCARD_ALL;
    3700             : 
    3701          25 :             for (k = 0; k < p->nb_stream_indexes; k++)
    3702          25 :                 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
    3703          25 :                     discard = AVDISCARD_DEFAULT;
    3704          25 :                     break;
    3705             :                 }
    3706          25 :             p->discard = discard;
    3707             :         }
    3708             :     }
    3709             : 
    3710             :     /* write headers for files with no streams */
    3711       10823 :     for (i = 0; i < nb_output_files; i++) {
    3712        5412 :         oc = output_files[i]->ctx;
    3713        5412 :         if (oc->oformat->flags & AVFMT_NOSTREAMS && oc->nb_streams == 0) {
    3714           1 :             ret = check_init_output_file(output_files[i], i);
    3715           1 :             if (ret < 0)
    3716           0 :                 goto dump_format;
    3717             :         }
    3718             :     }
    3719             : 
    3720        5411 :  dump_format:
    3721             :     /* dump the stream mapping */
    3722        5411 :     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
    3723       11178 :     for (i = 0; i < nb_input_streams; i++) {
    3724        5767 :         ist = input_streams[i];
    3725             : 
    3726       11062 :         for (j = 0; j < ist->nb_filters; j++) {
    3727        5295 :             if (!filtergraph_is_simple(ist->filters[j]->graph)) {
    3728         224 :                 av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d (%s) -> %s",
    3729         168 :                        ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
    3730          56 :                        ist->filters[j]->name);
    3731          56 :                 if (nb_filtergraphs > 1)
    3732           0 :                     av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
    3733          56 :                 av_log(NULL, AV_LOG_INFO, "\n");
    3734             :             }
    3735             :         }
    3736             :     }
    3737             : 
    3738       10963 :     for (i = 0; i < nb_output_streams; i++) {
    3739        5552 :         ost = output_streams[i];
    3740             : 
    3741        5552 :         if (ost->attachment_filename) {
    3742             :             /* an attached file */
    3743           1 :             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
    3744             :                    ost->attachment_filename, ost->file_index, ost->index);
    3745           1 :             continue;
    3746             :         }
    3747             : 
    3748        5551 :         if (ost->filter && !filtergraph_is_simple(ost->filter->graph)) {
    3749             :             /* output from a complex graph */
    3750          60 :             av_log(NULL, AV_LOG_INFO, "  %s", ost->filter->name);
    3751          60 :             if (nb_filtergraphs > 1)
    3752           0 :                 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
    3753             : 
    3754         120 :             av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
    3755         120 :                    ost->index, ost->enc ? ost->enc->name : "?");
    3756          60 :             continue;
    3757             :         }
    3758             : 
    3759       16473 :         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
    3760        5491 :                input_streams[ost->source_index]->file_index,
    3761        5491 :                input_streams[ost->source_index]->st->index,
    3762             :                ost->file_index,
    3763             :                ost->index);
    3764        5491 :         if (ost->sync_ist != input_streams[ost->source_index])
    3765           0 :             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
    3766           0 :                    ost->sync_ist->file_index,
    3767           0 :                    ost->sync_ist->st->index);
    3768        5491 :         if (ost->stream_copy)
    3769         222 :             av_log(NULL, AV_LOG_INFO, " (copy)");
    3770             :         else {
    3771        5269 :             const AVCodec *in_codec    = input_streams[ost->source_index]->dec;
    3772        5269 :             const AVCodec *out_codec   = ost->enc;
    3773        5269 :             const char *decoder_name   = "?";
    3774        5269 :             const char *in_codec_name  = "?";
    3775        5269 :             const char *encoder_name   = "?";
    3776        5269 :             const char *out_codec_name = "?";
    3777             :             const AVCodecDescriptor *desc;
    3778             : 
    3779        5269 :             if (in_codec) {
    3780        5269 :                 decoder_name  = in_codec->name;
    3781        5269 :                 desc = avcodec_descriptor_get(in_codec->id);
    3782        5269 :                 if (desc)
    3783        5269 :                     in_codec_name = desc->name;
    3784        5269 :                 if (!strcmp(decoder_name, in_codec_name))
    3785        5115 :                     decoder_name = "native";
    3786             :             }
    3787             : 
    3788        5269 :             if (out_codec) {
    3789        5269 :                 encoder_name   = out_codec->name;
    3790        5269 :                 desc = avcodec_descriptor_get(out_codec->id);
    3791        5269 :                 if (desc)
    3792        5269 :                     out_codec_name = desc->name;
    3793        5269 :                 if (!strcmp(encoder_name, out_codec_name))
    3794        5181 :                     encoder_name = "native";
    3795             :             }
    3796             : 
    3797        5269 :             av_log(NULL, AV_LOG_INFO, " (%s (%s) -> %s (%s))",
    3798             :                    in_codec_name, decoder_name,
    3799             :                    out_codec_name, encoder_name);
    3800             :         }
    3801        5491 :         av_log(NULL, AV_LOG_INFO, "\n");
    3802             :     }
    3803             : 
    3804        5411 :     if (ret) {
    3805           0 :         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
    3806           0 :         return ret;
    3807             :     }
    3808             : 
    3809        5411 :     atomic_store(&transcode_init_done, 1);
    3810             : 
    3811        5411 :     return 0;
    3812             : }
    3813             : 
    3814             : /* Return 1 if there remain streams where more output is wanted, 0 otherwise. */
    3815     1329862 : static int need_output(void)
    3816             : {
    3817             :     int i;
    3818             : 
    3819     1335585 :     for (i = 0; i < nb_output_streams; i++) {
    3820     1330174 :         OutputStream *ost    = output_streams[i];
    3821     1330174 :         OutputFile *of       = output_files[ost->file_index];
    3822     1330174 :         AVFormatContext *os  = output_files[ost->file_index]->ctx;
    3823             : 
    3824     2656629 :         if (ost->finished ||
    3825     2649503 :             (os->pb && avio_tell(os->pb) >= of->limit_filesize))
    3826        3719 :             continue;
    3827     1326455 :         if (ost->frame_number >= ost->max_frames) {
    3828             :             int j;
    3829        4010 :             for (j = 0; j < of->ctx->nb_streams; j++)
    3830        2006 :                 close_output_stream(output_streams[of->ost_index + j]);
    3831        2004 :             continue;
    3832             :         }
    3833             : 
    3834     1324451 :         return 1;
    3835             :     }
    3836             : 
    3837        5411 :     return 0;
    3838             : }
    3839             : 
    3840             : /**
    3841             :  * Select the output stream to process.
    3842             :  *
    3843             :  * @return  selected output stream, or NULL if none available
    3844             :  */
    3845     1324451 : static OutputStream *choose_output(void)
    3846             : {
    3847             :     int i;
    3848     1324451 :     int64_t opts_min = INT64_MAX;
    3849     1324451 :     OutputStream *ost_min = NULL;
    3850             : 
    3851     1733134 :     for (i = 0; i < nb_output_streams; i++) {
    3852     1338522 :         OutputStream *ost = output_streams[i];
    3853     1745072 :         int64_t opts = ost->st->cur_dts == AV_NOPTS_VALUE ? INT64_MIN :
    3854      406550 :                        av_rescale_q(ost->st->cur_dts, ost->st->time_base,
    3855      406550 :                                     AV_TIME_BASE_Q);
    3856     1338522 :         if (ost->st->cur_dts == AV_NOPTS_VALUE)
    3857      931972 :             av_log(NULL, AV_LOG_DEBUG, "cur_dts is invalid (this is harmless if it occurs once at the start per stream)\n");
    3858             : 
    3859     1338522 :         if (!ost->initialized && !ost->inputs_done)
    3860      929839 :             return ost;
    3861             : 
    3862      408683 :         if (!ost->finished && opts < opts_min) {
    3863      399683 :             opts_min = opts;
    3864      399683 :             ost_min  = ost->unavailable ? NULL : ost;
    3865             :         }
    3866             :     }
    3867      394612 :     return ost_min;
    3868             : }
    3869             : 
    3870           0 : static void set_tty_echo(int on)
    3871             : {
    3872             : #if HAVE_TERMIOS_H
    3873             :     struct termios tty;
    3874           0 :     if (tcgetattr(0, &tty) == 0) {
    3875           0 :         if (on) tty.c_lflag |= ECHO;
    3876           0 :         else    tty.c_lflag &= ~ECHO;
    3877           0 :         tcsetattr(0, TCSANOW, &tty);
    3878             :     }
    3879             : #endif
    3880           0 : }
    3881             : 
    3882        3297 : static int check_keyboard_interaction(int64_t cur_time)
    3883             : {
    3884             :     int i, ret, key;
    3885             :     static int64_t last_time;
    3886        3297 :     if (received_nb_signals)
    3887           0 :         return AVERROR_EXIT;
    3888             :     /* read_key() returns 0 on EOF */
    3889        3297 :     if(cur_time - last_time >= 100000 && !run_as_daemon){
    3890          41 :         key =  read_key();
    3891          41 :         last_time = cur_time;
    3892             :     }else
    3893        3256 :         key = -1;
    3894        3297 :     if (key == 'q')
    3895           0 :         return AVERROR_EXIT;
    3896        3297 :     if (key == '+') av_log_set_level(av_log_get_level()+10);
    3897        3297 :     if (key == '-') av_log_set_level(av_log_get_level()-10);
    3898        3297 :     if (key == 's') qp_hist     ^= 1;
    3899        3297 :     if (key == 'h'){
    3900           0 :         if (do_hex_dump){
    3901           0 :             do_hex_dump = do_pkt_dump = 0;
    3902           0 :         } else if(do_pkt_dump){
    3903           0 :             do_hex_dump = 1;
    3904             :         } else
    3905           0 :             do_pkt_dump = 1;
    3906           0 :         av_log_set_level(AV_LOG_DEBUG);
    3907             :     }
    3908        3297 :     if (key == 'c' || key == 'C'){
    3909           0 :         char buf[4096], target[64], command[256], arg[256] = {0};
    3910             :         double time;
    3911           0 :         int k, n = 0;
    3912           0 :         fprintf(stderr, "\nEnter command: <target>|all <time>|-1 <command>[ <argument>]\n");
    3913           0 :         i = 0;
    3914           0 :         set_tty_echo(1);
    3915           0 :         while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
    3916           0 :             if (k > 0)
    3917           0 :                 buf[i++] = k;
    3918           0 :         buf[i] = 0;
    3919           0 :         set_tty_echo(0);
    3920           0 :         fprintf(stderr, "\n");
    3921           0 :         if (k > 0 &&
    3922             :             (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
    3923           0 :             av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
    3924             :                    target, time, command, arg);
    3925           0 :             for (i = 0; i < nb_filtergraphs; i++) {
    3926           0 :                 FilterGraph *fg = filtergraphs[i];
    3927           0 :                 if (fg->graph) {
    3928           0 :                     if (time < 0) {
    3929           0 :                         ret = avfilter_graph_send_command(fg->graph, target, command, arg, buf, sizeof(buf),
    3930             :                                                           key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
    3931           0 :                         fprintf(stderr, "Command reply for stream %d: ret:%d res:\n%s", i, ret, buf);
    3932           0 :                     } else if (key == 'c') {
    3933           0 :                         fprintf(stderr, "Queuing commands only on filters supporting the specific command is unsupported\n");
    3934           0 :                         ret = AVERROR_PATCHWELCOME;
    3935             :                     } else {
    3936           0 :                         ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
    3937           0 :                         if (ret < 0)
    3938           0 :                             fprintf(stderr, "Queuing command failed with error %s\n", av_err2str(ret));
    3939             :                     }
    3940             :                 }
    3941             :             }
    3942             :         } else {
    3943           0 :             av_log(NULL, AV_LOG_ERROR,
    3944             :                    "Parse error, at least 3 arguments were expected, "
    3945             :                    "only %d given in string '%s'\n", n, buf);
    3946             :         }
    3947             :     }
    3948        3297 :     if (key == 'd' || key == 'D'){
    3949           0 :         int debug=0;
    3950           0 :         if(key == 'D') {
    3951           0 :             debug = input_streams[0]->st->codec->debug<<1;
    3952           0 :             if(!debug) debug = 1;
    3953           0 :             while(debug & (FF_DEBUG_DCT_COEFF
    3954             : #if FF_API_DEBUG_MV
    3955             :                                              |FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE
    3956             : #endif
    3957             :                                                                                   )) //unsupported, would just crash
    3958           0 :                 debug += debug;
    3959             :         }else{
    3960             :             char buf[32];
    3961           0 :             int k = 0;
    3962           0 :             i = 0;
    3963           0 :             set_tty_echo(1);
    3964           0 :             while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
    3965           0 :                 if (k > 0)
    3966           0 :                     buf[i++] = k;
    3967           0 :             buf[i] = 0;
    3968           0 :             set_tty_echo(0);
    3969           0 :             fprintf(stderr, "\n");
    3970           0 :             if (k <= 0 || sscanf(buf, "%d", &debug)!=1)
    3971           0 :                 fprintf(stderr,"error parsing debug value\n");
    3972             :         }
    3973           0 :         for(i=0;i<nb_input_streams;i++) {
    3974           0 :             input_streams[i]->st->codec->debug = debug;
    3975             :         }
    3976           0 :         for(i=0;i<nb_output_streams;i++) {
    3977           0 :             OutputStream *ost = output_streams[i];
    3978           0 :             ost->enc_ctx->debug = debug;
    3979             :         }
    3980           0 :         if(debug) av_log_set_level(AV_LOG_DEBUG);
    3981           0 :         fprintf(stderr,"debug=%d\n", debug);
    3982             :     }
    3983        3297 :     if (key == '?'){
    3984           0 :         fprintf(stderr, "key    function\n"
    3985             :                         "?      show this help\n"
    3986             :                         "+      increase verbosity\n"
    3987             :                         "-      decrease verbosity\n"
    3988             :                         "c      Send command to first matching filter supporting it\n"
    3989             :                         "C      Send/Queue command to all matching filters\n"
    3990             :                         "D      cycle through available debug modes\n"
    3991             :                         "h      dump packets/hex press to cycle through the 3 states\n"
    3992             :                         "q      quit\n"
    3993             :                         "s      Show QP histogram\n"
    3994             :         );
    3995             :     }
    3996        3297 :     return 0;
    3997             : }
    3998             : 
    3999             : #if HAVE_PTHREADS
    4000         137 : static void *input_thread(void *arg)
    4001             : {
    4002         137 :     InputFile *f = arg;
    4003         137 :     unsigned flags = f->non_blocking ? AV_THREAD_MESSAGE_NONBLOCK : 0;
    4004         137 :     int ret = 0;
    4005             : 
    4006        6600 :     while (1) {
    4007             :         AVPacket pkt;
    4008        6737 :         ret = av_read_frame(f->ctx, &pkt);
    4009             : 
    4010        6737 :         if (ret == AVERROR(EAGAIN)) {
    4011           0 :             av_usleep(10000);
    4012           0 :             continue;
    4013             :         }
    4014        6737 :         if (ret < 0) {
    4015          44 :             av_thread_message_queue_set_err_recv(f->in_thread_queue, ret);
    4016          44 :             break;
    4017             :         }
    4018        6693 :         ret = av_thread_message_queue_send(f->in_thread_queue, &pkt, flags);
    4019        6693 :         if (flags && ret == AVERROR(EAGAIN)) {
    4020          57 :             flags = 0;
    4021          57 :             ret = av_thread_message_queue_send(f->in_thread_queue, &pkt, flags);
    4022          57 :             av_log(f->ctx, AV_LOG_WARNING,
    4023             :                    "Thread message queue blocking; consider raising the "
    4024             :                    "thread_queue_size option (current value: %d)\n",
    4025             :                    f->thread_queue_size);
    4026             :         }
    4027        6693 :         if (ret < 0) {
    4028          93 :             if (ret != AVERROR_EOF)
    4029           0 :                 av_log(f->ctx, AV_LOG_ERROR,
    4030             :                        "Unable to send packet to main thread: %s\n",
    4031           0 :                        av_err2str(ret));
    4032          93 :             av_packet_unref(&pkt);
    4033          93 :             av_thread_message_queue_set_err_recv(f->in_thread_queue, ret);
    4034          93 :             break;
    4035             :         }
    4036             :     }
    4037             : 
    4038         274 :     return NULL;
    4039             : }
    4040             : 
    4041       16234 : static void free_input_threads(void)
    4042             : {
    4043             :     int i;
    4044             : 
    4045       32608 :     for (i = 0; i < nb_input_files; i++) {
    4046       16374 :         InputFile *f = input_files[i];
    4047             :         AVPacket pkt;
    4048             : 
    4049       16374 :         if (!f || !f->in_thread_queue)
    4050       16237 :             continue;
    4051         137 :         av_thread_message_queue_set_err_send(f->in_thread_queue, AVERROR_EOF);
    4052        1010 :         while (av_thread_message_queue_recv(f->in_thread_queue, &pkt, 0) >= 0)
    4053         736 :             av_packet_unref(&pkt);
    4054             : 
    4055         137 :         pthread_join(f->thread, NULL);
    4056         137 :         f->joined = 1;
    4057         137 :         av_thread_message_queue_free(&f->in_thread_queue);
    4058             :     }
    4059       16234 : }
    4060             : 
    4061        5411 : static int init_input_threads(void)
    4062             : {
    4063             :     int i, ret;
    4064             : 
    4065        5411 :     if (nb_input_files == 1)
    4066        5321 :         return 0;
    4067             : 
    4068         227 :     for (i = 0; i < nb_input_files; i++) {
    4069         137 :         InputFile *f = input_files[i];
    4070             : 
    4071         196 :         if (f->ctx->pb ? !f->ctx->pb->seekable :
    4072          59 :             strcmp(f->ctx->iformat->name, "lavfi"))
    4073          58 :             f->non_blocking = 1;
    4074         137 :         ret = av_thread_message_queue_alloc(&f->in_thread_queue,
    4075         137 :                                             f->thread_queue_size, sizeof(AVPacket));
    4076         137 :         if (ret < 0)
    4077           0 :             return ret;
    4078             : 
    4079         137 :         if ((ret = pthread_create(&f->thread, NULL, input_thread, f))) {
    4080           0 :             av_log(NULL, AV_LOG_ERROR, "pthread_create failed: %s. Try to increase `ulimit -v` or decrease `ulimit -s`.\n", strerror(ret));
    4081           0 :             av_thread_message_queue_free(&f->in_thread_queue);
    4082           0 :             return AVERROR(ret);
    4083             :         }
    4084             :     }
    4085          90 :     return 0;
    4086             : }
    4087             : 
    4088      927644 : static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
    4089             : {
    4090      927644 :     return av_thread_message_queue_recv(f->in_thread_queue, pkt,
    4091      927644 :                                         f->non_blocking ?
    4092             :                                         AV_THREAD_MESSAGE_NONBLOCK : 0);
    4093             : }
    4094             : #endif
    4095             : 
    4096     1320055 : static int get_input_packet(InputFile *f, AVPacket *pkt)
    4097             : {
    4098     1320055 :     if (f->rate_emu) {
    4099             :         int i;
    4100           0 :         for (i = 0; i < f->nb_streams; i++) {
    4101           0 :             InputStream *ist = input_streams[f->ist_index + i];
    4102           0 :             int64_t pts = av_rescale(ist->dts, 1000000, AV_TIME_BASE);
    4103           0 :             int64_t now = av_gettime_relative() - ist->start;
    4104           0 :             if (pts > now)
    4105           0 :                 return AVERROR(EAGAIN);
    4106             :         }
    4107             :     }
    4108             : 
    4109             : #if HAVE_PTHREADS
    4110     1320055 :     if (nb_input_files > 1)
    4111      927644 :         return get_input_packet_mt(f, pkt);
    4112             : #endif
    4113      392411 :     return av_read_frame(f->ctx, pkt);
    4114             : }
    4115             : 
    4116           5 : static int got_eagain(void)
    4117             : {
    4118             :     int i;
    4119           5 :     for (i = 0; i < nb_output_streams; i++)
    4120           5 :         if (output_streams[i]->unavailable)
    4121           5 :             return 1;
    4122           0 :     return 0;
    4123             : }
    4124             : 
    4125      394771 : static void reset_eagain(void)
    4126             : {
    4127             :     int i;
    4128      795929 :     for (i = 0; i < nb_input_files; i++)
    4129      401158 :         input_files[i]->eagain = 0;
    4130      803598 :     for (i = 0; i < nb_output_streams; i++)
    4131      408827 :         output_streams[i]->unavailable = 0;
    4132      394771 : }
    4133             : 
    4134             : // set duration to max(tmp, duration) in a proper time base and return duration's time_base
    4135           0 : static AVRational duration_max(int64_t tmp, int64_t *duration, AVRational tmp_time_base,
    4136             :                                 AVRational time_base)
    4137             : {
    4138             :     int ret;
    4139             : 
    4140           0 :     if (!*duration) {
    4141           0 :         *duration = tmp;
    4142           0 :         return tmp_time_base;
    4143             :     }
    4144             : 
    4145           0 :     ret = av_compare_ts(*duration, time_base, tmp, tmp_time_base);
    4146           0 :     if (ret < 0) {
    4147           0 :         *duration = tmp;
    4148           0 :         return tmp_time_base;
    4149             :     }
    4150             : 
    4151           0 :     return time_base;
    4152             : }
    4153             : 
    4154           0 : static int seek_to_start(InputFile *ifile, AVFormatContext *is)
    4155             : {
    4156             :     InputStream *ist;
    4157             :     AVCodecContext *avctx;
    4158           0 :     int i, ret, has_audio = 0;
    4159           0 :     int64_t duration = 0;
    4160             : 
    4161           0 :     ret = av_seek_frame(is, -1, is->start_time, 0);
    4162           0 :     if (ret < 0)
    4163           0 :         return ret;
    4164             : 
    4165           0 :     for (i = 0; i < ifile->nb_streams; i++) {
    4166           0 :         ist   = input_streams[ifile->ist_index + i];
    4167           0 :         avctx = ist->dec_ctx;
    4168             : 
    4169             :         // flush decoders
    4170           0 :         if (ist->decoding_needed) {
    4171           0 :             process_input_packet(ist, NULL, 1);
    4172           0 :             avcodec_flush_buffers(avctx);
    4173             :         }
    4174             : 
    4175             :         /* duration is the length of the last frame in a stream
    4176             :          * when audio stream is present we don't care about
    4177             :          * last video frame length because it's not defined exactly */
    4178           0 :         if (avctx->codec_type == AVMEDIA_TYPE_AUDIO && ist->nb_samples)
    4179           0 :             has_audio = 1;
    4180             :     }
    4181             : 
    4182           0 :     for (i = 0; i < ifile->nb_streams; i++) {
    4183           0 :         ist   = input_streams[ifile->ist_index + i];
    4184           0 :         avctx = ist->dec_ctx;
    4185             : 
    4186           0 :         if (has_audio) {
    4187           0 :             if (avctx->codec_type == AVMEDIA_TYPE_AUDIO && ist->nb_samples) {
    4188           0 :                 AVRational sample_rate = {1, avctx->sample_rate};
    4189             : 
    4190           0 :                 duration = av_rescale_q(ist->nb_samples, sample_rate, ist->st->time_base);
    4191             :             } else {
    4192           0 :                 continue;
    4193             :             }
    4194             :         } else {
    4195           0 :             if (ist->framerate.num) {
    4196           0 :                 duration = av_rescale_q(1, av_inv_q(ist->framerate), ist->st->time_base);
    4197           0 :             } else if (ist->st->avg_frame_rate.num) {
    4198           0 :                 duration = av_rescale_q(1, av_inv_q(ist->st->avg_frame_rate), ist->st->time_base);
    4199             :             } else {
    4200           0 :                 duration = 1;
    4201             :             }
    4202             :         }
    4203           0 :         if (!ifile->duration)
    4204           0 :             ifile->time_base = ist->st->time_base;
    4205             :         /* the total duration of the stream, max_pts - min_pts is
    4206             :          * the duration of the stream without the last frame */
    4207           0 :         duration += ist->max_pts - ist->min_pts;
    4208           0 :         ifile->time_base = duration_max(duration, &ifile->duration, ist->st->time_base,
    4209             :                                         ifile->time_base);
    4210             :     }
    4211             : 
    4212           0 :     if (ifile->loop > 0)
    4213           0 :         ifile->loop--;
    4214             : 
    4215           0 :     return ret;
    4216             : }
    4217             : 
    4218             : /*
    4219             :  * Return
    4220             :  * - 0 -- one packet was read and processed
    4221             :  * - AVERROR(EAGAIN) -- no packets were available for selected file,
    4222             :  *   this function should be called again
    4223             :  * - AVERROR_EOF -- this function should not be called again
    4224             :  */
    4225     1320055 : static int process_input(int file_index)
    4226             : {
    4227     1320055 :     InputFile *ifile = input_files[file_index];
    4228             :     AVFormatContext *is;
    4229             :     InputStream *ist;
    4230             :     AVPacket pkt;
    4231             :     int ret, i, j;
    4232             :     int64_t duration;
    4233             :     int64_t pkt_dts;
    4234             : 
    4235     1320055 :     is  = ifile->ctx;
    4236     1320055 :     ret = get_input_packet(ifile, &pkt);
    4237             : 
    4238     1320055 :     if (ret == AVERROR(EAGAIN)) {
    4239      921740 :         ifile->eagain = 1;
    4240      921740 :         return ret;
    4241             :     }
    4242      398315 :     if (ret < 0 && ifile->loop) {
    4243           0 :         ret = seek_to_start(ifile, is);
    4244           0 :         if (ret < 0)
    4245           0 :             av_log(NULL, AV_LOG_WARNING, "Seek to start failed.\n");
    4246             :         else
    4247           0 :             ret = get_input_packet(ifile, &pkt);
    4248           0 :         if (ret == AVERROR(EAGAIN)) {
    4249           0 :             ifile->eagain = 1;
    4250           0 :             return ret;
    4251             :         }
    4252             :     }
    4253      398315 :     if (ret < 0) {
    4254        3549 :         if (ret != AVERROR_EOF) {
    4255          76 :             print_error(is->filename, ret);
    4256          76 :             if (exit_on_error)
    4257           0 :                 exit_program(1);
    4258             :         }
    4259             : 
    4260        6769 :         for (i = 0; i < ifile->nb_streams; i++) {
    4261        3819 :             ist = input_streams[ifile->ist_index + i];
    4262        3819 :             if (ist->decoding_needed) {
    4263        3432 :                 ret = process_input_packet(ist, NULL, 0);
    4264        3432 :                 if (ret>0)
    4265         599 :                     return 0;
    4266             :             }
    4267             : 
    4268             :             /* mark all outputs that don't go through lavfi as finished */
    4269        6705 :             for (j = 0; j < nb_output_streams; j++) {
    4270        3485 :                 OutputStream *ost = output_streams[j];
    4271             : 
    4272        6504 :                 if (ost->source_index == ifile->ist_index + i &&
    4273        5828 :                     (ost->stream_copy || ost->enc->type == AVMEDIA_TYPE_SUBTITLE))
    4274         240 :                     finish_output_stream(ost);
    4275             :             }
    4276             :         }
    4277             : 
    4278        2950 :         ifile->eof_reached = 1;
    4279        2950 :         return AVERROR(EAGAIN);
    4280             :     }
    4281             : 
    4282      394766 :     reset_eagain();
    4283             : 
    4284      394766 :     if (do_pkt_dump) {
    4285           0 :         av_pkt_dump_log2(NULL, AV_LOG_INFO, &pkt, do_hex_dump,
    4286           0 :                          is->streams[pkt.stream_index]);
    4287             :     }
    4288             :     /* the following test is needed in case new streams appear
    4289             :        dynamically in stream : we ignore them */
    4290      394766 :     if (pkt.stream_index >= ifile->nb_streams) {
    4291           0 :         report_new_stream(file_index, &pkt);
    4292           0 :         goto discard_packet;
    4293             :     }
    4294             : 
    4295      394766 :     ist = input_streams[ifile->ist_index + pkt.stream_index];
    4296             : 
    4297      394766 :     ist->data_size += pkt.size;
    4298      394766 :     ist->nb_packets++;
    4299             : 
    4300      394766 :     if (ist->discard)
    4301        7546 :         goto discard_packet;
    4302             : 
    4303      387220 :     if (exit_on_error && (pkt.flags & AV_PKT_FLAG_CORRUPT)) {
    4304           0 :         av_log(NULL, AV_LOG_FATAL, "%s: corrupt input packet in stream %d\n", is->filename, pkt.stream_index);
    4305           0 :         exit_program(1);
    4306             :     }
    4307             : 
    4308      387220 :     if (debug_ts) {
    4309           0 :         av_log(NULL, AV_LOG_INFO, "demuxer -> ist_index:%d type:%s "
    4310             :                "next_dts:%s next_dts_time:%s next_pts:%s next_pts_time:%s pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s off:%s off_time:%s\n",
    4311           0 :                ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->dec_ctx->codec_type),
    4312           0 :                av_ts2str(ist->next_dts), av_ts2timestr(ist->next_dts, &AV_TIME_BASE_Q),
    4313           0 :                av_ts2str(ist->next_pts), av_ts2timestr(ist->next_pts, &AV_TIME_BASE_Q),
    4314           0 :                av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
    4315           0 :                av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
    4316           0 :                av_ts2str(input_files[ist->file_index]->ts_offset),
    4317           0 :                av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
    4318             :     }
    4319             : 
    4320      387220 :     if(!ist->wrap_correction_done && is->start_time != AV_NOPTS_VALUE && ist->st->pts_wrap_bits < 64){
    4321             :         int64_t stime, stime2;
    4322             :         // Correcting starttime based on the enabled streams
    4323             :         // FIXME this ideally should be done before the first use of starttime but we do not know which are the enabled streams at that point.
    4324             :         //       so we instead do it here as part of discontinuity handling
    4325         229 :         if (   ist->next_dts == AV_NOPTS_VALUE
    4326         229 :             && ifile->ts_offset == -is->start_time
    4327         227 :             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
    4328          41 :             int64_t new_start_time = INT64_MAX;
    4329         115 :             for (i=0; i<is->nb_streams; i++) {
    4330          74 :                 AVStream *st = is->streams[i];
    4331          74 :                 if(st->discard == AVDISCARD_ALL || st->start_time == AV_NOPTS_VALUE)
    4332          15 :                     continue;
    4333          59 :                 new_start_time = FFMIN(new_start_time, av_rescale_q(st->start_time, st->time_base, AV_TIME_BASE_Q));
    4334             :             }
    4335          41 :             if (new_start_time > is->start_time) {
    4336           3 :                 av_log(is, AV_LOG_VERBOSE, "Correcting start time by %"PRId64"\n", new_start_time - is->start_time);
    4337           3 :                 ifile->ts_offset = -new_start_time;
    4338             :             }
    4339             :         }
    4340             : 
    4341         229 :         stime = av_rescale_q(is->start_time, AV_TIME_BASE_Q, ist->st->time_base);
    4342         229 :         stime2= stime + (1ULL<<ist->st->pts_wrap_bits);
    4343         229 :         ist->wrap_correction_done = 1;
    4344             : 
    4345         229 :         if(stime2 > stime && pkt.dts != AV_NOPTS_VALUE && pkt.dts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
    4346           0 :             pkt.dts -= 1ULL<<ist->st->pts_wrap_bits;
    4347           0 :             ist->wrap_correction_done = 0;
    4348             :         }
    4349         229 :         if(stime2 > stime && pkt.pts != AV_NOPTS_VALUE && pkt.pts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
    4350           0 :             pkt.pts -= 1ULL<<ist->st->pts_wrap_bits;
    4351           0 :             ist->wrap_correction_done = 0;
    4352             :         }
    4353             :     }
    4354             : 
    4355             :     /* add the stream-global side data to the first packet */
    4356      387220 :     if (ist->nb_packets == 1) {
    4357        5738 :         for (i = 0; i < ist->st->nb_side_data; i++) {
    4358         213 :             AVPacketSideData *src_sd = &ist->st->side_data[i];
    4359             :             uint8_t *dst_data;
    4360             : 
    4361         213 :             if (src_sd->type == AV_PKT_DATA_DISPLAYMATRIX)
    4362           1 :                 continue;
    4363             : 
    4364         212 :             if (av_packet_get_side_data(&pkt, src_sd->type, NULL))
    4365           0 :                 continue;
    4366             : 
    4367         212 :             dst_data = av_packet_new_side_data(&pkt, src_sd->type, src_sd->size);
    4368         212 :             if (!dst_data)
    4369           0 :                 exit_program(1);
    4370             : 
    4371         212 :             memcpy(dst_data, src_sd->data, src_sd->size);
    4372             :         }
    4373             :     }
    4374             : 
    4375      387220 :     if (pkt.dts != AV_NOPTS_VALUE)
    4376      351575 :         pkt.dts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
    4377      387220 :     if (pkt.pts != AV_NOPTS_VALUE)
    4378      349481 :         pkt.pts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
    4379             : 
    4380      387220 :     if (pkt.pts != AV_NOPTS_VALUE)
    4381      349481 :         pkt.pts *= ist->ts_scale;
    4382      387220 :     if (pkt.dts != AV_NOPTS_VALUE)
    4383      351575 :         pkt.dts *= ist->ts_scale;
    4384             : 
    4385      387220 :     pkt_dts = av_rescale_q_rnd(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q, AV_ROUND_NEAR_INF|AV_ROUND_PASS_MINMAX);
    4386      664390 :     if ((ist->dec_ctx->codec_type == AVMEDIA_TYPE_VIDEO ||
    4387      662724 :          ist->dec_ctx->codec_type == AVMEDIA_TYPE_AUDIO) &&
    4388      349911 :         pkt_dts != AV_NOPTS_VALUE && ist->next_dts == AV_NOPTS_VALUE && !copy_ts
    4389        5458 :         && (is->iformat->flags & AVFMT_TS_DISCONT) && ifile->last_ts != AV_NOPTS_VALUE) {
    4390          78 :         int64_t delta   = pkt_dts - ifile->last_ts;
    4391         156 :         if (delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
    4392          78 :             delta >  1LL*dts_delta_threshold*AV_TIME_BASE){
    4393           0 :             ifile->ts_offset -= delta;
    4394           0 :             av_log(NULL, AV_LOG_DEBUG,
    4395             :                    "Inter stream timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
    4396             :                    delta, ifile->ts_offset);
    4397           0 :             pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
    4398           0 :             if (pkt.pts != AV_NOPTS_VALUE)
    4399           0 :                 pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
    4400             :         }
    4401             :     }
    4402             : 
    4403      387220 :     duration = av_rescale_q(ifile->duration, ifile->time_base, ist->st->time_base);
    4404      387220 :     if (pkt.pts != AV_NOPTS_VALUE) {
    4405      349481 :         pkt.pts += duration;
    4406      349481 :         ist->max_pts = FFMAX(pkt.pts, ist->max_pts);
    4407      349481 :         ist->min_pts = FFMIN(pkt.pts, ist->min_pts);
    4408             :     }
    4409             : 
    4410      387220 :     if (pkt.dts != AV_NOPTS_VALUE)
    4411      351575 :         pkt.dts += duration;
    4412             : 
    4413      387220 :     pkt_dts = av_rescale_q_rnd(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q, AV_ROUND_NEAR_INF|AV_ROUND_PASS_MINMAX);
    4414      664390 :     if ((ist->dec_ctx->codec_type == AVMEDIA_TYPE_VIDEO ||
    4415      662724 :          ist->dec_ctx->codec_type == AVMEDIA_TYPE_AUDIO) &&
    4416      694363 :          pkt_dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE &&
    4417      344452 :         !copy_ts) {
    4418      344379 :         int64_t delta   = pkt_dts - ist->next_dts;
    4419      344379 :         if (is->iformat->flags & AVFMT_TS_DISCONT) {
    4420       27284 :             if (delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
    4421       27284 :                 delta >  1LL*dts_delta_threshold*AV_TIME_BASE ||
    4422       13642 :                 pkt_dts + AV_TIME_BASE/10 < FFMAX(ist->pts, ist->dts)) {
    4423           8 :                 ifile->ts_offset -= delta;
    4424           8 :                 av_log(NULL, AV_LOG_DEBUG,
    4425             :                        "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
    4426             :                        delta, ifile->ts_offset);
    4427           8 :                 pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
    4428           8 :                 if (pkt.pts != AV_NOPTS_VALUE)
    4429           8 :                     pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
    4430             :             }
    4431             :         } else {
    4432      661474 :             if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
    4433      330737 :                  delta >  1LL*dts_error_threshold*AV_TIME_BASE) {
    4434           0 :                 av_log(NULL, AV_LOG_WARNING, "DTS %"PRId64", next:%"PRId64" st:%d invalid dropping\n", pkt.dts, ist->next_dts, pkt.stream_index);
    4435           0 :                 pkt.dts = AV_NOPTS_VALUE;
    4436             :             }
    4437      330737 :             if (pkt.pts != AV_NOPTS_VALUE){
    4438      328706 :                 int64_t pkt_pts = av_rescale_q(pkt.pts, ist->st->time_base, AV_TIME_BASE_Q);
    4439      328706 :                 delta   = pkt_pts - ist->next_dts;
    4440      657412 :                 if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
    4441      328706 :                      delta >  1LL*dts_error_threshold*AV_TIME_BASE) {
    4442           0 :                     av_log(NULL, AV_LOG_WARNING, "PTS %"PRId64", next:%"PRId64" invalid dropping st:%d\n", pkt.pts, ist->next_dts, pkt.stream_index);
    4443           0 :                     pkt.pts = AV_NOPTS_VALUE;
    4444             :                 }
    4445             :             }
    4446             :         }
    4447             :     }
    4448             : 
    4449      387220 :     if (pkt.dts != AV_NOPTS_VALUE)
    4450      351575 :         ifile->last_ts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
    4451             : 
    4452      387220 :     if (debug_ts) {
    4453           0 :         av_log(NULL, AV_LOG_INFO, "demuxer+ffmpeg -> ist_index:%d type:%s pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s off:%s off_time:%s\n",
    4454           0 :                ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->dec_ctx->codec_type),
    4455           0 :                av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
    4456           0 :                av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
    4457           0 :                av_ts2str(input_files[ist->file_index]->ts_offset),
    4458           0 :                av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
    4459             :     }
    4460             : 
    4461      387220 :     sub2video_heartbeat(ist, pkt.pts);
    4462             : 
    4463      387220 :     process_input_packet(ist, &pkt, 0);
    4464             : 
    4465      394766 : discard_packet:
    4466      394766 :     av_packet_unref(&pkt);
    4467             : 
    4468      394766 :     return 0;
    4469             : }
    4470             : 
    4471             : /**
    4472             :  * Perform a step of transcoding for the specified filter graph.
    4473             :  *
    4474             :  * @param[in]  graph     filter graph to consider
    4475             :  * @param[out] best_ist  input stream where a frame would allow to continue
    4476             :  * @return  0 for success, <0 for error
    4477             :  */
    4478      366585 : static int transcode_from_filter(FilterGraph *graph, InputStream **best_ist)
    4479             : {
    4480             :     int i, ret;
    4481      366585 :     int nb_requests, nb_requests_max = 0;
    4482             :     InputFilter *ifilter;
    4483             :     InputStream *ist;
    4484             : 
    4485      366585 :     *best_ist = NULL;
    4486      366585 :     ret = avfilter_graph_request_oldest(graph->graph);
    4487      366585 :     if (ret >= 0)
    4488        1096 :         return reap_filters(0);
    4489             : 
    4490      365489 :     if (ret == AVERROR_EOF) {
    4491        3295 :         ret = reap_filters(1);
    4492        6592 :         for (i = 0; i < graph->nb_outputs; i++)
    4493        3297 :             close_output_stream(graph->outputs[i]->ost);
    4494        3295 :         return ret;
    4495             :     }
    4496      362194 :     if (ret != AVERROR(EAGAIN))
    4497           0 :         return ret;
    4498             : 
    4499      729120 :     for (i = 0; i < graph->nb_inputs; i++) {
    4500      366926 :         ifilter = graph->inputs[i];
    4501      366926 :         ist = ifilter->ist;
    4502      733852 :         if (input_files[ist->file_index]->eagain ||
    4503      366926 :             input_files[ist->file_index]->eof_reached)
    4504        1114 :             continue;
    4505      365812 :         nb_requests = av_buffersrc_get_nb_failed_requests(ifilter->filter);
    4506      365812 :         if (nb_requests > nb_requests_max) {
    4507      362194 :             nb_requests_max = nb_requests;
    4508      362194 :             *best_ist = ist;
    4509             :         }
    4510             :     }
    4511             : 
    4512      362194 :     if (!*best_ist)
    4513           0 :         for (i = 0; i < graph->nb_outputs; i++)
    4514           0 :             graph->outputs[i]->ost->unavailable = 1;
    4515             : 
    4516      362194 :     return 0;
    4517             : }
    4518             : 
    4519             : /**
    4520             :  * Run a single step of transcoding.
    4521             :  *
    4522             :  * @return  0 for success, <0 for error
    4523             :  */
    4524     1324451 : static int transcode_step(void)
    4525             : {
    4526             :     OutputStream *ost;
    4527     1324451 :     InputStream  *ist = NULL;
    4528             :     int ret;
    4529             : 
    4530     1324451 :     ost = choose_output();
    4531     1324451 :     if (!ost) {
    4532           5 :         if (got_eagain()) {
    4533           5 :             reset_eagain();
    4534           5 :             av_usleep(10000);
    4535           5 :             return 0;
    4536             :         }
    4537           0 :         av_log(NULL, AV_LOG_VERBOSE, "No more inputs to read from, finishing.\n");
    4538           0 :         return AVERROR_EOF;
    4539             :     }
    4540             : 
    4541     1324446 :     if (ost->filter && !ost->filter->graph->graph) {
    4542      929839 :         if (ifilter_has_all_input_formats(ost->filter->graph)) {
    4543          23 :             ret = configure_filtergraph(ost->filter->graph);
    4544          23 :             if (ret < 0) {
    4545           0 :                 av_log(NULL, AV_LOG_ERROR, "Error reinitializing filters!\n");
    4546           0 :                 return ret;
    4547             :             }
    4548             :         }
    4549             :     }
    4550             : 
    4551     1324446 :     if (ost->filter && ost->filter->graph->graph) {
    4552      366585 :         if (!ost->initialized) {
    4553          23 :             char error[1024] = {0};
    4554          23 :             ret = init_output_stream(ost, error, sizeof(error));
    4555          23 :             if (ret < 0) {
    4556           0 :                 av_log(NULL, AV_LOG_ERROR, "Error initializing output stream %d:%d -- %s\n",
    4557             :                        ost->file_index, ost->index, error);
    4558           0 :                 exit_program(1);
    4559             :             }
    4560             :         }
    4561      366585 :         if ((ret = transcode_from_filter(ost->filter->graph, &ist)) < 0)
    4562           0 :             return ret;
    4563      728779 :         if (!ist)
    4564        4391 :             return 0;
    4565      957861 :     } else if (ost->filter) {
    4566             :         int i;
    4567      951215 :         for (i = 0; i < ost->filter->graph->nb_inputs; i++) {
    4568      951215 :             InputFilter *ifilter = ost->filter->graph->inputs[i];
    4569      951215 :             if (!ifilter->ist->got_output && !input_files[ifilter->ist->file_index]->eof_reached) {
    4570      929816 :                 ist = ifilter->ist;
    4571      929816 :                 break;
    4572             :             }
    4573             :         }
    4574      929816 :         if (!ist) {
    4575           0 :             ost->inputs_done = 1;
    4576           0 :             return 0;
    4577             :         }
    4578             :     } else {
    4579       28045 :         av_assert0(ost->source_index >= 0);
    4580       28045 :         ist = input_streams[ost->source_index];
    4581             :     }
    4582             : 
    4583     1320055 :     ret = process_input(ist->file_index);
    4584     1320055 :     if (ret == AVERROR(EAGAIN)) {
    4585      924690 :         if (input_files[ist->file_index]->eagain)
    4586      921740 :             ost->unavailable = 1;
    4587      924690 :         return 0;
    4588             :     }
    4589             : 
    4590      395365 :     if (ret < 0)
    4591           0 :         return ret == AVERROR_EOF ? 0 : ret;
    4592             : 
    4593      395365 :     return reap_filters(0);
    4594             : }
    4595             : 
    4596             : /*
    4597             :  * The following code is the main loop of the file converter
    4598             :  */
    4599        5411 : static int transcode(void)
    4600             : {
    4601             :     int ret, i;
    4602             :     AVFormatContext *os;
    4603             :     OutputStream *ost;
    4604             :     InputStream *ist;
    4605             :     int64_t timer_start;
    4606        5411 :     int64_t total_packets_written = 0;
    4607             : 
    4608        5411 :     ret = transcode_init();
    4609        5411 :     if (ret < 0)
    4610           0 :         goto fail;
    4611             : 
    4612        5411 :     if (stdin_interaction) {
    4613          15 :         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
    4614             :     }
    4615             : 
    4616        5411 :     timer_start = av_gettime_relative();
    4617             : 
    4618             : #if HAVE_PTHREADS
    4619        5411 :     if ((ret = init_input_threads()) < 0)
    4620           0 :         goto fail;
    4621             : #endif
    4622             : 
    4623     1335273 :     while (!received_sigterm) {
    4624     1329862 :         int64_t cur_time= av_gettime_relative();
    4625             : 
    4626             :         /* if 'q' pressed, exits */
    4627     1329862 :         if (stdin_interaction)
    4628        3297 :             if (check_keyboard_interaction(cur_time) < 0)
    4629           0 :                 break;
    4630             : 
    4631             :         /* check if there's any stream where output is still needed */
    4632     1329862 :         if (!need_output()) {
    4633        5411 :             av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n");
    4634        5411 :             break;
    4635             :         }
    4636             : 
    4637     1324451 :         ret = transcode_step();
    4638     1324451 :         if (ret < 0 && ret != AVERROR_EOF) {
    4639             :             char errbuf[128];
    4640           0 :             av_strerror(ret, errbuf, sizeof(errbuf));
    4641             : 
    4642           0 :             av_log(NULL, AV_LOG_ERROR, "Error while filtering: %s\n", errbuf);
    4643           0 :             break;
    4644             :         }
    4645             : 
    4646             :         /* dump report by using the output first video and audio streams */
    4647     1324451 :         print_report(0, timer_start, cur_time);
    4648             :     }
    4649             : #if HAVE_PTHREADS
    4650        5411 :     free_input_threads();
    4651             : #endif
    4652             : 
    4653             :     /* at the end of stream, we must flush the decoder buffers */
    4654       11178 :     for (i = 0; i < nb_input_streams; i++) {
    4655        5767 :         ist = input_streams[i];
    4656        5767 :         if (!input_files[ist->file_index]->eof_reached) {
    4657        2551 :             process_input_packet(ist, NULL, 0);
    4658             :         }
    4659             :     }
    4660        5411 :     flush_encoders();
    4661             : 
    4662        5411 :     term_exit();
    4663             : 
    4664             :     /* write the trailer if needed and close file */
    4665       10823 :     for (i = 0; i < nb_output_files; i++) {
    4666        5412 :         os = output_files[i]->ctx;
    4667        5412 :         if (!output_files[i]->header_written) {
    4668           0 :             av_log(NULL, AV_LOG_ERROR,
    4669             :                    "Nothing was written into output file %d (%s), because "
    4670             :                    "at least one of its streams received no packets.\n",
    4671           0 :                    i, os->filename);
    4672           0 :             continue;
    4673             :         }
    4674        5412 :         if ((ret = av_write_trailer(os)) < 0) {
    4675           0 :             av_log(NULL, AV_LOG_ERROR, "Error writing trailer of %s: %s\n", os->filename, av_err2str(ret));
    4676           0 :             if (exit_on_error)
    4677           0 :                 exit_program(1);
    4678             :         }
    4679             :     }
    4680             : 
    4681             :     /* dump report by using the first video and audio streams */
    4682        5411 :     print_report(1, timer_start, av_gettime_relative());
    4683             : 
    4684             :     /* close each encoder */
    4685       10963 :     for (i = 0; i < nb_output_streams; i++) {
    4686        5552 :         ost = output_streams[i];
    4687        5552 :         if (ost->encoding_needed) {
    4688        5329 :             av_freep(&ost->enc_ctx->stats_in);
    4689             :         }
    4690        5552 :         total_packets_written += ost->packets_written;
    4691             :     }
    4692             : 
    4693        5411 :     if (!total_packets_written && (abort_on_flags & ABORT_ON_FLAG_EMPTY_OUTPUT)) {
    4694           0 :         av_log(NULL, AV_LOG_FATAL, "Empty output\n");
    4695           0 :         exit_program(1);
    4696             :     }
    4697             : 
    4698             :     /* close each decoder */
    4699       11178 :     for (i = 0; i < nb_input_streams; i++) {
    4700        5767 :         ist = input_streams[i];
    4701        5767 :         if (ist->decoding_needed) {
    4702        5323 :             avcodec_close(ist->dec_ctx);
    4703        5323 :             if (ist->hwaccel_uninit)
    4704           0 :                 ist->hwaccel_uninit(ist->dec_ctx);
    4705             :         }
    4706             :     }
    4707             : 
    4708        5411 :     av_buffer_unref(&hw_device_ctx);
    4709        5411 :     hw_device_free_all();
    4710             : 
    4711             :     /* finished ! */
    4712        5411 :     ret = 0;
    4713             : 
    4714        5411 :  fail:
    4715             : #if HAVE_PTHREADS
    4716        5411 :     free_input_threads();
    4717             : #endif
    4718             : 
    4719        5411 :     if (output_streams) {
    4720       10962 :         for (i = 0; i < nb_output_streams; i++) {
    4721        5552 :             ost = output_streams[i];
    4722        5552 :             if (ost) {
    4723        5552 :                 if (ost->logfile) {
    4724           0 :                     if (fclose(ost->logfile))
    4725           0 :                         av_log(NULL, AV_LOG_ERROR,
    4726             :                                "Error closing logfile, loss of information possible: %s\n",
    4727           0 :                                av_err2str(AVERROR(errno)));
    4728           0 :                     ost->logfile = NULL;
    4729             :                 }
    4730        5552 :                 av_freep(&ost->forced_kf_pts);
    4731        5552 :                 av_freep(&ost->apad);
    4732        5552 :                 av_freep(&ost->disposition);
    4733        5552 :                 av_dict_free(&ost->encoder_opts);
    4734        5552 :                 av_dict_free(&ost->sws_dict);
    4735        5552 :                 av_dict_free(&ost->swr_opts);
    4736        5552 :                 av_dict_free(&ost->resample_opts);
    4737             :             }
    4738             :         }
    4739             :     }
    4740        5411 :     return ret;
    4741             : }
    4742             : 
    4743             : 
    4744       10822 : static int64_t getutime(void)
    4745             : {
    4746             : #if HAVE_GETRUSAGE
    4747             :     struct rusage rusage;
    4748             : 
    4749       10822 :     getrusage(RUSAGE_SELF, &rusage);
    4750       10822 :     return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
    4751             : #elif HAVE_GETPROCESSTIMES
    4752             :     HANDLE proc;
    4753             :     FILETIME c, e, k, u;
    4754             :     proc = GetCurrentProcess();
    4755             :     GetProcessTimes(proc, &c, &e, &k, &u);
    4756             :     return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
    4757             : #else
    4758             :     return av_gettime_relative();
    4759             : #endif
    4760             : }
    4761             : 
    4762           0 : static int64_t getmaxrss(void)
    4763             : {
    4764             : #if HAVE_GETRUSAGE && HAVE_STRUCT_RUSAGE_RU_MAXRSS
    4765             :     struct rusage rusage;
    4766           0 :     getrusage(RUSAGE_SELF, &rusage);
    4767           0 :     return (int64_t)rusage.ru_maxrss * 1024;
    4768             : #elif HAVE_GETPROCESSMEMORYINFO
    4769             :     HANDLE proc;
    4770             :     PROCESS_MEMORY_COUNTERS memcounters;
    4771             :     proc = GetCurrentProcess();
    4772             :     memcounters.cb = sizeof(memcounters);
    4773             :     GetProcessMemoryInfo(proc, &memcounters, sizeof(memcounters));
    4774             :     return memcounters.PeakPagefileUsage;
    4775             : #else
    4776             :     return 0;
    4777             : #endif
    4778             : }
    4779             : 
    4780           0 : static void log_callback_null(void *ptr, int level, const char *fmt, va_list vl)
    4781             : {
    4782           0 : }
    4783             : 
    4784        5412 : int main(int argc, char **argv)
    4785             : {
    4786             :     int i, ret;
    4787             :     int64_t ti;
    4788             : 
    4789        5412 :     init_dynload();
    4790             : 
    4791        5412 :     register_exit(ffmpeg_cleanup);
    4792             : 
    4793        5412 :     setvbuf(stderr,NULL,_IONBF,0); /* win32 runtime needs this */
    4794             : 
    4795        5412 :     av_log_set_flags(AV_LOG_SKIP_REPEATED);
    4796        5412 :     parse_loglevel(argc, argv, options);
    4797             : 
    4798        5412 :     if(argc>1 && !strcmp(argv[1], "-d")){
    4799           0 :         run_as_daemon=1;
    4800           0 :         av_log_set_callback(log_callback_null);
    4801           0 :         argc--;
    4802           0 :         argv++;
    4803             :     }
    4804             : 
    4805        5412 :     avcodec_register_all();
    4806             : #if CONFIG_AVDEVICE
    4807        5412 :     avdevice_register_all();
    4808             : #endif
    4809        5412 :     avfilter_register_all();
    4810        5412 :     av_register_all();
    4811        5412 :     avformat_network_init();
    4812             : 
    4813        5412 :     show_banner(argc, argv, options);
    4814             : 
    4815             :     /* parse options and open all input/output files */
    4816        5412 :     ret = ffmpeg_parse_options(argc, argv);
    4817        5411 :     if (ret < 0)
    4818           0 :         exit_program(1);
    4819             : 
    4820        5411 :     if (nb_output_files <= 0 && nb_input_files == 0) {
    4821           0 :         show_usage();
    4822           0 :         av_log(NULL, AV_LOG_WARNING, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
    4823           0 :         exit_program(1);
    4824             :     }
    4825             : 
    4826             :     /* file converter / grab */
    4827        5411 :     if (nb_output_files <= 0) {
    4828           0 :         av_log(NULL, AV_LOG_FATAL, "At least one output file must be specified\n");
    4829           0 :         exit_program(1);
    4830             :     }
    4831             : 
    4832             : //     if (nb_input_files == 0) {
    4833             : //         av_log(NULL, AV_LOG_FATAL, "At least one input file must be specified\n");
    4834             : //         exit_program(1);
    4835             : //     }
    4836             : 
    4837       10823 :     for (i = 0; i < nb_output_files; i++) {
    4838        5412 :         if (strcmp(output_files[i]->ctx->oformat->name, "rtp"))
    4839        5412 :             want_sdp = 0;
    4840             :     }
    4841             : 
    4842        5411 :     current_time = ti = getutime();
    4843        5411 :     if (transcode() < 0)
    4844           0 :         exit_program(1);
    4845        5411 :     ti = getutime() - ti;
    4846        5411 :     if (do_benchmark) {
    4847           0 :         av_log(NULL, AV_LOG_INFO, "bench: utime=%0.3fs\n", ti / 1000000.0);
    4848             :     }
    4849        5411 :     av_log(NULL, AV_LOG_DEBUG, "%"PRIu64" frames successfully decoded, %"PRIu64" decoding errors\n",
    4850             :            decode_error_stat[0], decode_error_stat[1]);
    4851        5411 :     if ((decode_error_stat[0] + decode_error_stat[1]) * max_error_rate < decode_error_stat[1])
    4852           0 :         exit_program(69);
    4853             : 
    4854        5411 :     exit_program(received_nb_signals ? 255 : main_return_code);
    4855             :     return main_return_code;
    4856             : }

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