LCOV - code coverage report
Current view: top level - src - ffmpeg.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 1919 2715 70.7 %
Date: 2017-07-20 10:18:08 Functions: 71 84 84.5 %

          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         311 : static void sub2video_push_ref(InputStream *ist, int64_t pts)
     220             : {
     221         311 :     AVFrame *frame = ist->sub2video.frame;
     222             :     int i;
     223             : 
     224             :     av_assert1(frame->data[0]);
     225         311 :     ist->sub2video.last_pts = frame->pts = pts;
     226         622 :     for (i = 0; i < ist->nb_filters; i++)
     227         311 :         av_buffersrc_add_frame_flags(ist->filters[i]->filter, frame,
     228             :                                      AV_BUFFERSRC_FLAG_KEEP_REF |
     229             :                                      AV_BUFFERSRC_FLAG_PUSH);
     230         311 : }
     231             : 
     232         118 : void sub2video_update(InputStream *ist, AVSubtitle *sub)
     233             : {
     234         118 :     AVFrame *frame = ist->sub2video.frame;
     235             :     int8_t *dst;
     236             :     int     dst_linesize;
     237             :     int num_rects, i;
     238             :     int64_t pts, end_pts;
     239             : 
     240         118 :     if (!frame)
     241          28 :         return;
     242          90 :     if (sub) {
     243          44 :         pts       = av_rescale_q(sub->pts + sub->start_display_time * 1000LL,
     244          44 :                                  AV_TIME_BASE_Q, ist->st->time_base);
     245          44 :         end_pts   = av_rescale_q(sub->pts + sub->end_display_time   * 1000LL,
     246          44 :                                  AV_TIME_BASE_Q, ist->st->time_base);
     247          44 :         num_rects = sub->num_rects;
     248             :     } else {
     249          46 :         pts       = ist->sub2video.end_pts;
     250          46 :         end_pts   = INT64_MAX;
     251          46 :         num_rects = 0;
     252             :     }
     253          90 :     if (sub2video_get_blank_frame(ist) < 0) {
     254           0 :         av_log(ist->dec_ctx, AV_LOG_ERROR,
     255             :                "Impossible to get a blank canvas.\n");
     256           0 :         return;
     257             :     }
     258          90 :     dst          = frame->data    [0];
     259          90 :     dst_linesize = frame->linesize[0];
     260         134 :     for (i = 0; i < num_rects; i++)
     261          44 :         sub2video_copy_rect(dst, dst_linesize, frame->width, frame->height, sub->rects[i]);
     262          90 :     sub2video_push_ref(ist, pts);
     263          90 :     ist->sub2video.end_pts = end_pts;
     264             : }
     265             : 
     266      378616 : static void sub2video_heartbeat(InputStream *ist, int64_t pts)
     267             : {
     268      378616 :     InputFile *infile = input_files[ist->file_index];
     269             :     int i, j, nb_reqs;
     270             :     int64_t pts2;
     271             : 
     272             :     /* When a frame is read from a file, examine all sub2video streams in
     273             :        the same file and send the sub2video frame again. Otherwise, decoded
     274             :        video frames could be accumulating in the filter graph while a filter
     275             :        (possibly overlay) is desperately waiting for a subtitle frame. */
     276      794792 :     for (i = 0; i < infile->nb_streams; i++) {
     277      416176 :         InputStream *ist2 = input_streams[infile->ist_index + i];
     278      416176 :         if (!ist2->sub2video.frame)
     279      415287 :             continue;
     280             :         /* subtitles seem to be usually muxed ahead of other streams;
     281             :            if not, subtracting a larger time here is necessary */
     282         889 :         pts2 = av_rescale_q(pts, ist->st->time_base, ist2->st->time_base) - 1;
     283             :         /* do not send the heartbeat frame if the subtitle is already ahead */
     284         889 :         if (pts2 <= ist2->sub2video.last_pts)
     285           0 :             continue;
     286         889 :         if (pts2 >= ist2->sub2video.end_pts || !ist2->sub2video.frame->data[0])
     287          44 :             sub2video_update(ist2, NULL);
     288        1778 :         for (j = 0, nb_reqs = 0; j < ist2->nb_filters; j++)
     289         889 :             nb_reqs += av_buffersrc_get_nb_failed_requests(ist2->filters[j]->filter);
     290         889 :         if (nb_reqs)
     291         221 :             sub2video_push_ref(ist2, pts2);
     292             :     }
     293      378616 : }
     294             : 
     295          30 : static void sub2video_flush(InputStream *ist)
     296             : {
     297             :     int i;
     298             : 
     299          30 :     if (ist->sub2video.end_pts < INT64_MAX)
     300          30 :         sub2video_update(ist, NULL);
     301          32 :     for (i = 0; i < ist->nb_filters; i++)
     302           2 :         av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
     303          30 : }
     304             : 
     305             : /* end of sub2video hack */
     306             : 
     307       10351 : static void term_exit_sigsafe(void)
     308             : {
     309             : #if HAVE_TERMIOS_H
     310       10351 :     if(restore_tty)
     311           4 :         tcsetattr (0, TCSANOW, &oldtty);
     312             : #endif
     313       10351 : }
     314             : 
     315       10351 : void term_exit(void)
     316             : {
     317       10351 :     av_log(NULL, AV_LOG_QUIET, "%s", "");
     318       10351 :     term_exit_sigsafe();
     319       10351 : }
     320             : 
     321             : static volatile int received_sigterm = 0;
     322             : static volatile int received_nb_signals = 0;
     323             : static atomic_int transcode_init_done = ATOMIC_VAR_INIT(0);
     324             : static volatile int ffmpeg_exited = 0;
     325             : static int main_return_code = 0;
     326             : 
     327             : static void
     328           0 : sigterm_handler(int sig)
     329             : {
     330           0 :     received_sigterm = sig;
     331           0 :     received_nb_signals++;
     332           0 :     term_exit_sigsafe();
     333           0 :     if(received_nb_signals > 3) {
     334           0 :         write(2/*STDERR_FILENO*/, "Received > 3 system signals, hard exiting\n",
     335             :                            strlen("Received > 3 system signals, hard exiting\n"));
     336             : 
     337           0 :         exit(123);
     338             :     }
     339           0 : }
     340             : 
     341             : #if HAVE_SETCONSOLECTRLHANDLER
     342             : static BOOL WINAPI CtrlHandler(DWORD fdwCtrlType)
     343             : {
     344             :     av_log(NULL, AV_LOG_DEBUG, "\nReceived windows signal %ld\n", fdwCtrlType);
     345             : 
     346             :     switch (fdwCtrlType)
     347             :     {
     348             :     case CTRL_C_EVENT:
     349             :     case CTRL_BREAK_EVENT:
     350             :         sigterm_handler(SIGINT);
     351             :         return TRUE;
     352             : 
     353             :     case CTRL_CLOSE_EVENT:
     354             :     case CTRL_LOGOFF_EVENT:
     355             :     case CTRL_SHUTDOWN_EVENT:
     356             :         sigterm_handler(SIGTERM);
     357             :         /* Basically, with these 3 events, when we return from this method the
     358             :            process is hard terminated, so stall as long as we need to
     359             :            to try and let the main thread(s) clean up and gracefully terminate
     360             :            (we have at most 5 seconds, but should be done far before that). */
     361             :         while (!ffmpeg_exited) {
     362             :             Sleep(0);
     363             :         }
     364             :         return TRUE;
     365             : 
     366             :     default:
     367             :         av_log(NULL, AV_LOG_ERROR, "Received unknown windows signal %ld\n", fdwCtrlType);
     368             :         return FALSE;
     369             :     }
     370             : }
     371             : #endif
     372             : 
     373        5175 : void term_init(void)
     374             : {
     375             : #if HAVE_TERMIOS_H
     376        5175 :     if (!run_as_daemon && stdin_interaction) {
     377             :         struct termios tty;
     378          10 :         if (tcgetattr (0, &tty) == 0) {
     379           2 :             oldtty = tty;
     380           2 :             restore_tty = 1;
     381             : 
     382           2 :             tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
     383             :                              |INLCR|IGNCR|ICRNL|IXON);
     384           2 :             tty.c_oflag |= OPOST;
     385           2 :             tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
     386           2 :             tty.c_cflag &= ~(CSIZE|PARENB);
     387           2 :             tty.c_cflag |= CS8;
     388           2 :             tty.c_cc[VMIN] = 1;
     389           2 :             tty.c_cc[VTIME] = 0;
     390             : 
     391           2 :             tcsetattr (0, TCSANOW, &tty);
     392             :         }
     393          10 :         signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
     394             :     }
     395             : #endif
     396             : 
     397        5175 :     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
     398        5175 :     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
     399             : #ifdef SIGXCPU
     400        5175 :     signal(SIGXCPU, sigterm_handler);
     401             : #endif
     402             : #if HAVE_SETCONSOLECTRLHANDLER
     403             :     SetConsoleCtrlHandler((PHANDLER_ROUTINE) CtrlHandler, TRUE);
     404             : #endif
     405        5175 : }
     406             : 
     407             : /* read a key without blocking */
     408          37 : static int read_key(void)
     409             : {
     410             :     unsigned char ch;
     411             : #if HAVE_TERMIOS_H
     412          37 :     int n = 1;
     413             :     struct timeval tv;
     414             :     fd_set rfds;
     415             : 
     416          37 :     FD_ZERO(&rfds);
     417          37 :     FD_SET(0, &rfds);
     418          37 :     tv.tv_sec = 0;
     419          37 :     tv.tv_usec = 0;
     420          37 :     n = select(1, &rfds, NULL, NULL, &tv);
     421          37 :     if (n > 0) {
     422          22 :         n = read(0, &ch, 1);
     423          22 :         if (n == 1)
     424           0 :             return ch;
     425             : 
     426          22 :         return n;
     427             :     }
     428             : #elif HAVE_KBHIT
     429             : #    if HAVE_PEEKNAMEDPIPE
     430             :     static int is_pipe;
     431             :     static HANDLE input_handle;
     432             :     DWORD dw, nchars;
     433             :     if(!input_handle){
     434             :         input_handle = GetStdHandle(STD_INPUT_HANDLE);
     435             :         is_pipe = !GetConsoleMode(input_handle, &dw);
     436             :     }
     437             : 
     438             :     if (is_pipe) {
     439             :         /* When running under a GUI, you will end here. */
     440             :         if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL)) {
     441             :             // input pipe may have been closed by the program that ran ffmpeg
     442             :             return -1;
     443             :         }
     444             :         //Read it
     445             :         if(nchars != 0) {
     446             :             read(0, &ch, 1);
     447             :             return ch;
     448             :         }else{
     449             :             return -1;
     450             :         }
     451             :     }
     452             : #    endif
     453             :     if(kbhit())
     454             :         return(getch());
     455             : #endif
     456          15 :     return -1;
     457             : }
     458             : 
     459      529161 : static int decode_interrupt_cb(void *ctx)
     460             : {
     461      529161 :     return received_nb_signals > atomic_load(&transcode_init_done);
     462             : }
     463             : 
     464             : const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
     465             : 
     466        5176 : static void ffmpeg_cleanup(int ret)
     467             : {
     468             :     int i, j;
     469             : 
     470        5176 :     if (do_benchmark) {
     471           0 :         int maxrss = getmaxrss() / 1024;
     472           0 :         av_log(NULL, AV_LOG_INFO, "bench: maxrss=%ikB\n", maxrss);
     473             :     }
     474             : 
     475       10271 :     for (i = 0; i < nb_filtergraphs; i++) {
     476        5095 :         FilterGraph *fg = filtergraphs[i];
     477        5095 :         avfilter_graph_free(&fg->graph);
     478       10201 :         for (j = 0; j < fg->nb_inputs; j++) {
     479       10212 :             while (av_fifo_size(fg->inputs[j]->frame_queue)) {
     480             :                 AVFrame *frame;
     481           0 :                 av_fifo_generic_read(fg->inputs[j]->frame_queue, &frame,
     482             :                                      sizeof(frame), NULL);
     483           0 :                 av_frame_free(&frame);
     484             :             }
     485        5106 :             av_fifo_freep(&fg->inputs[j]->frame_queue);
     486        5106 :             if (fg->inputs[j]->ist->sub2video.sub_queue) {
     487           0 :                 while (av_fifo_size(fg->inputs[j]->ist->sub2video.sub_queue)) {
     488             :                     AVSubtitle sub;
     489           0 :                     av_fifo_generic_read(fg->inputs[j]->ist->sub2video.sub_queue,
     490             :                                          &sub, sizeof(sub), NULL);
     491           0 :                     avsubtitle_free(&sub);
     492             :                 }
     493           0 :                 av_fifo_freep(&fg->inputs[j]->ist->sub2video.sub_queue);
     494             :             }
     495        5106 :             av_buffer_unref(&fg->inputs[j]->hw_frames_ctx);
     496        5106 :             av_freep(&fg->inputs[j]->name);
     497        5106 :             av_freep(&fg->inputs[j]);
     498             :         }
     499        5095 :         av_freep(&fg->inputs);
     500       10192 :         for (j = 0; j < fg->nb_outputs; j++) {
     501        5097 :             av_freep(&fg->outputs[j]->name);
     502        5097 :             av_freep(&fg->outputs[j]->formats);
     503        5097 :             av_freep(&fg->outputs[j]->channel_layouts);
     504        5097 :             av_freep(&fg->outputs[j]->sample_rates);
     505        5097 :             av_freep(&fg->outputs[j]);
     506             :         }
     507        5095 :         av_freep(&fg->outputs);
     508        5095 :         av_freep(&fg->graph_desc);
     509             : 
     510        5095 :         av_freep(&filtergraphs[i]);
     511             :     }
     512        5176 :     av_freep(&filtergraphs);
     513             : 
     514        5176 :     av_freep(&subtitle_out);
     515             : 
     516             :     /* close files */
     517       10352 :     for (i = 0; i < nb_output_files; i++) {
     518        5176 :         OutputFile *of = output_files[i];
     519             :         AVFormatContext *s;
     520        5176 :         if (!of)
     521           0 :             continue;
     522        5176 :         s = of->ctx;
     523        5176 :         if (s && s->oformat && !(s->oformat->flags & AVFMT_NOFILE))
     524        5135 :             avio_closep(&s->pb);
     525        5176 :         avformat_free_context(s);
     526        5176 :         av_dict_free(&of->opts);
     527             : 
     528        5176 :         av_freep(&output_files[i]);
     529             :     }
     530       10484 :     for (i = 0; i < nb_output_streams; i++) {
     531        5308 :         OutputStream *ost = output_streams[i];
     532             : 
     533        5308 :         if (!ost)
     534           0 :             continue;
     535             : 
     536        5315 :         for (j = 0; j < ost->nb_bitstream_filters; j++)
     537           7 :             av_bsf_free(&ost->bsf_ctx[j]);
     538        5308 :         av_freep(&ost->bsf_ctx);
     539             : 
     540        5308 :         av_frame_free(&ost->filtered_frame);
     541        5308 :         av_frame_free(&ost->last_frame);
     542        5308 :         av_dict_free(&ost->encoder_opts);
     543             : 
     544        5308 :         av_parser_close(ost->parser);
     545        5308 :         avcodec_free_context(&ost->parser_avctx);
     546             : 
     547        5308 :         av_freep(&ost->forced_keyframes);
     548        5308 :         av_expr_free(ost->forced_keyframes_pexpr);
     549        5308 :         av_freep(&ost->avfilter);
     550        5308 :         av_freep(&ost->logfile_prefix);
     551             : 
     552        5308 :         av_freep(&ost->audio_channels_map);
     553        5308 :         ost->audio_channels_mapped = 0;
     554             : 
     555        5308 :         av_dict_free(&ost->sws_dict);
     556             : 
     557        5308 :         avcodec_free_context(&ost->enc_ctx);
     558        5308 :         avcodec_parameters_free(&ost->ref_par);
     559             : 
     560        5308 :         if (ost->muxing_queue) {
     561       10616 :             while (av_fifo_size(ost->muxing_queue)) {
     562             :                 AVPacket pkt;
     563           0 :                 av_fifo_generic_read(ost->muxing_queue, &pkt, sizeof(pkt), NULL);
     564           0 :                 av_packet_unref(&pkt);
     565             :             }
     566        5308 :             av_fifo_freep(&ost->muxing_queue);
     567             :         }
     568             : 
     569        5308 :         av_freep(&output_streams[i]);
     570             :     }
     571             : #if HAVE_PTHREADS
     572        5176 :     free_input_threads();
     573             : #endif
     574       10409 :     for (i = 0; i < nb_input_files; i++) {
     575        5233 :         avformat_close_input(&input_files[i]->ctx);
     576        5233 :         av_freep(&input_files[i]);
     577             :     }
     578       10710 :     for (i = 0; i < nb_input_streams; i++) {
     579        5534 :         InputStream *ist = input_streams[i];
     580             : 
     581        5534 :         av_frame_free(&ist->decoded_frame);
     582        5534 :         av_frame_free(&ist->filter_frame);
     583        5534 :         av_dict_free(&ist->decoder_opts);
     584        5534 :         avsubtitle_free(&ist->prev_sub.subtitle);
     585        5534 :         av_frame_free(&ist->sub2video.frame);
     586        5534 :         av_freep(&ist->filters);
     587        5534 :         av_freep(&ist->hwaccel_device);
     588        5534 :         av_freep(&ist->dts_buffer);
     589             : 
     590        5534 :         avcodec_free_context(&ist->dec_ctx);
     591             : 
     592        5534 :         av_freep(&input_streams[i]);
     593             :     }
     594             : 
     595        5176 :     if (vstats_file) {
     596           0 :         if (fclose(vstats_file))
     597           0 :             av_log(NULL, AV_LOG_ERROR,
     598             :                    "Error closing vstats file, loss of information possible: %s\n",
     599           0 :                    av_err2str(AVERROR(errno)));
     600             :     }
     601        5176 :     av_freep(&vstats_filename);
     602             : 
     603        5176 :     av_freep(&input_streams);
     604        5176 :     av_freep(&input_files);
     605        5176 :     av_freep(&output_streams);
     606        5176 :     av_freep(&output_files);
     607             : 
     608        5176 :     uninit_opts();
     609             : 
     610        5176 :     avformat_network_deinit();
     611             : 
     612        5176 :     if (received_sigterm) {
     613           0 :         av_log(NULL, AV_LOG_INFO, "Exiting normally, received signal %d.\n",
     614             :                (int) received_sigterm);
     615        5176 :     } else if (ret && atomic_load(&transcode_init_done)) {
     616           0 :         av_log(NULL, AV_LOG_INFO, "Conversion failed!\n");
     617             :     }
     618        5176 :     term_exit();
     619        5176 :     ffmpeg_exited = 1;
     620        5176 : }
     621             : 
     622        5233 : void remove_avoptions(AVDictionary **a, AVDictionary *b)
     623             : {
     624        5233 :     AVDictionaryEntry *t = NULL;
     625             : 
     626       26953 :     while ((t = av_dict_get(b, "", t, AV_DICT_IGNORE_SUFFIX))) {
     627       16487 :         av_dict_set(a, t->key, NULL, AV_DICT_MATCH_CASE);
     628             :     }
     629        5233 : }
     630             : 
     631       15492 : void assert_avoptions(AVDictionary *m)
     632             : {
     633             :     AVDictionaryEntry *t;
     634       15492 :     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
     635           0 :         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
     636           0 :         exit_program(1);
     637             :     }
     638       15492 : }
     639             : 
     640           0 : static void abort_codec_experimental(AVCodec *c, int encoder)
     641             : {
     642           0 :     exit_program(1);
     643             : }
     644             : 
     645     2348930 : static void update_benchmark(const char *fmt, ...)
     646             : {
     647     2348930 :     if (do_benchmark_all) {
     648           0 :         int64_t t = getutime();
     649             :         va_list va;
     650             :         char buf[1024];
     651             : 
     652           0 :         if (fmt) {
     653           0 :             va_start(va, fmt);
     654           0 :             vsnprintf(buf, sizeof(buf), fmt, va);
     655           0 :             va_end(va);
     656           0 :             av_log(NULL, AV_LOG_INFO, "bench: %8"PRIu64" %s \n", t - current_time, buf);
     657             :         }
     658           0 :         current_time = t;
     659             :     }
     660     2348930 : }
     661             : 
     662           0 : static void close_all_output_streams(OutputStream *ost, OSTFinished this_stream, OSTFinished others)
     663             : {
     664             :     int i;
     665           0 :     for (i = 0; i < nb_output_streams; i++) {
     666           0 :         OutputStream *ost2 = output_streams[i];
     667           0 :         ost2->finished |= ost == ost2 ? this_stream : others;
     668             :     }
     669           0 : }
     670             : 
     671      406645 : static void write_packet(OutputFile *of, AVPacket *pkt, OutputStream *ost, int unqueue)
     672             : {
     673      406645 :     AVFormatContext *s = of->ctx;
     674      406645 :     AVStream *st = ost->st;
     675             :     int ret;
     676             : 
     677             :     /*
     678             :      * Audio encoders may split the packets --  #frames in != #packets out.
     679             :      * But there is no reordering, so we can limit the number of output packets
     680             :      * by simply dropping them here.
     681             :      * Counting encoded video frames needs to be done separately because of
     682             :      * reordering, see do_video_out().
     683             :      * Do not count the packet when unqueued because it has been counted when queued.
     684             :      */
     685      406645 :     if (!(st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && ost->encoding_needed) && !unqueue) {
     686      312199 :         if (ost->frame_number >= ost->max_frames) {
     687           0 :             av_packet_unref(pkt);
     688           0 :             return;
     689             :         }
     690      312199 :         ost->frame_number++;
     691             :     }
     692             : 
     693      406645 :     if (!of->header_written) {
     694          26 :         AVPacket tmp_pkt = {0};
     695             :         /* the muxer is not initialized yet, buffer the packet */
     696          26 :         if (!av_fifo_space(ost->muxing_queue)) {
     697           2 :             int new_size = FFMIN(2 * av_fifo_size(ost->muxing_queue),
     698             :                                  ost->max_muxing_queue_size);
     699           2 :             if (new_size <= av_fifo_size(ost->muxing_queue)) {
     700           0 :                 av_log(NULL, AV_LOG_ERROR,
     701             :                        "Too many packets buffered for output stream %d:%d.\n",
     702           0 :                        ost->file_index, ost->st->index);
     703           0 :                 exit_program(1);
     704             :             }
     705           2 :             ret = av_fifo_realloc2(ost->muxing_queue, new_size);
     706           2 :             if (ret < 0)
     707           0 :                 exit_program(1);
     708             :         }
     709          26 :         ret = av_packet_ref(&tmp_pkt, pkt);
     710          26 :         if (ret < 0)
     711           0 :             exit_program(1);
     712          26 :         av_fifo_generic_write(ost->muxing_queue, &tmp_pkt, sizeof(tmp_pkt), NULL);
     713          26 :         av_packet_unref(pkt);
     714          26 :         return;
     715             :     }
     716             : 
     717      789917 :     if ((st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && video_sync_method == VSYNC_DROP) ||
     718      690798 :         (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO && audio_sync_method < 0))
     719       23321 :         pkt->pts = pkt->dts = AV_NOPTS_VALUE;
     720             : 
     721      406619 :     if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
     722             :         int i;
     723       98007 :         uint8_t *sd = av_packet_get_side_data(pkt, AV_PKT_DATA_QUALITY_STATS,
     724             :                                               NULL);
     725       98007 :         ost->quality = sd ? AV_RL32(sd) : -1;
     726       98007 :         ost->pict_type = sd ? sd[4] : AV_PICTURE_TYPE_NONE;
     727             : 
     728      490035 :         for (i = 0; i<FF_ARRAY_ELEMS(ost->error); i++) {
     729      392028 :             if (sd && i < sd[5])
     730           0 :                 ost->error[i] = AV_RL64(sd + 8 + 8*i);
     731             :             else
     732      392028 :                 ost->error[i] = -1;
     733             :         }
     734             : 
     735       98007 :         if (ost->frame_rate.num && ost->is_cfr) {
     736        8394 :             if (pkt->duration > 0)
     737           0 :                 av_log(NULL, AV_LOG_WARNING, "Overriding packet duration by frame rate, this should not happen\n");
     738        8394 :             pkt->duration = av_rescale_q(1, av_inv_q(ost->frame_rate),
     739             :                                          ost->mux_timebase);
     740             :         }
     741             :     }
     742             : 
     743      406619 :     av_packet_rescale_ts(pkt, ost->mux_timebase, ost->st->time_base);
     744             : 
     745      406619 :     if (!(s->oformat->flags & AVFMT_NOTIMESTAMPS)) {
     746      328601 :         if (pkt->dts != AV_NOPTS_VALUE &&
     747      304761 :             pkt->pts != AV_NOPTS_VALUE &&
     748      152121 :             pkt->dts > pkt->pts) {
     749           0 :             av_log(s, AV_LOG_WARNING, "Invalid DTS: %"PRId64" PTS: %"PRId64" in output stream %d:%d, replacing by guess\n",
     750             :                    pkt->dts, pkt->pts,
     751           0 :                    ost->file_index, ost->st->index);
     752           0 :             pkt->pts =
     753           0 :             pkt->dts = pkt->pts + pkt->dts + ost->last_mux_dts + 1
     754           0 :                      - FFMIN3(pkt->pts, pkt->dts, ost->last_mux_dts + 1)
     755           0 :                      - FFMAX3(pkt->pts, pkt->dts, ost->last_mux_dts + 1);
     756             :         }
     757      351324 :         if ((st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO || st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) &&
     758      327405 :             pkt->dts != AV_NOPTS_VALUE &&
     759      304084 :             !(st->codecpar->codec_id == AV_CODEC_ID_VP9 && ost->stream_copy) &&
     760      151989 :             ost->last_mux_dts != AV_NOPTS_VALUE) {
     761      148145 :             int64_t max = ost->last_mux_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT);
     762      148145 :             if (pkt->dts < max) {
     763           0 :                 int loglevel = max - pkt->dts > 2 || st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO ? AV_LOG_WARNING : AV_LOG_DEBUG;
     764           0 :                 av_log(s, loglevel, "Non-monotonous DTS in output stream "
     765             :                        "%d:%d; previous: %"PRId64", current: %"PRId64"; ",
     766           0 :                        ost->file_index, ost->st->index, ost->last_mux_dts, pkt->dts);
     767           0 :                 if (exit_on_error) {
     768           0 :                     av_log(NULL, AV_LOG_FATAL, "aborting.\n");
     769           0 :                     exit_program(1);
     770             :                 }
     771           0 :                 av_log(s, loglevel, "changing to %"PRId64". This may result "
     772             :                        "in incorrect timestamps in the output file.\n",
     773             :                        max);
     774           0 :                 if (pkt->pts >= pkt->dts)
     775           0 :                     pkt->pts = FFMAX(pkt->pts, max);
     776           0 :                 pkt->dts = max;
     777             :             }
     778             :         }
     779             :     }
     780      406619 :     ost->last_mux_dts = pkt->dts;
     781             : 
     782      406619 :     ost->data_size += pkt->size;
     783      406619 :     ost->packets_written++;
     784             : 
     785      406619 :     pkt->stream_index = ost->index;
     786             : 
     787      406619 :     if (debug_ts) {
     788           0 :         av_log(NULL, AV_LOG_INFO, "muxer <- type:%s "
     789             :                 "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s size:%d\n",
     790           0 :                 av_get_media_type_string(ost->enc_ctx->codec_type),
     791           0 :                 av_ts2str(pkt->pts), av_ts2timestr(pkt->pts, &ost->st->time_base),
     792           0 :                 av_ts2str(pkt->dts), av_ts2timestr(pkt->dts, &ost->st->time_base),
     793             :                 pkt->size
     794             :               );
     795             :     }
     796             : 
     797      406619 :     ret = av_interleaved_write_frame(s, pkt);
     798      406619 :     if (ret < 0) {
     799           0 :         print_error("av_interleaved_write_frame()", ret);
     800           0 :         main_return_code = 1;
     801           0 :         close_all_output_streams(ost, MUXER_FINISHED | ENCODER_FINISHED, ENCODER_FINISHED);
     802             :     }
     803      406619 :     av_packet_unref(pkt);
     804             : }
     805             : 
     806        5109 : static void close_output_stream(OutputStream *ost)
     807             : {
     808        5109 :     OutputFile *of = output_files[ost->file_index];
     809             : 
     810        5109 :     ost->finished |= ENCODER_FINISHED;
     811        5109 :     if (of->shortest) {
     812           0 :         int64_t end = av_rescale_q(ost->sync_opts - ost->first_pts, ost->enc_ctx->time_base, AV_TIME_BASE_Q);
     813           0 :         of->recording_time = FFMIN(of->recording_time, end);
     814             :     }
     815        5109 : }
     816             : 
     817             : /*
     818             :  * Send a single packet to the output, applying any bitstream filters
     819             :  * associated with the output stream.  This may result in any number
     820             :  * of packets actually being written, depending on what bitstream
     821             :  * filters are applied.  The supplied packet is consumed and will be
     822             :  * blank (as if newly-allocated) when this function returns.
     823             :  *
     824             :  * If eof is set, instead indicate EOF to all bitstream filters and
     825             :  * therefore flush any delayed packets to the output.  A blank packet
     826             :  * must be supplied in this case.
     827             :  */
     828      410750 : static void output_packet(OutputFile *of, AVPacket *pkt,
     829             :                           OutputStream *ost, int eof)
     830             : {
     831      410750 :     int ret = 0;
     832             : 
     833             :     /* apply the output bitstream filters, if any */
     834      410750 :     if (ost->nb_bitstream_filters) {
     835             :         int idx;
     836             : 
     837         312 :         ret = av_bsf_send_packet(ost->bsf_ctx[0], eof ? NULL : pkt);
     838         312 :         if (ret < 0)
     839           0 :             goto finish;
     840             : 
     841         312 :         eof = 0;
     842         312 :         idx = 1;
     843        1240 :         while (idx) {
     844             :             /* get a packet from the previous filter up the chain */
     845         620 :             ret = av_bsf_receive_packet(ost->bsf_ctx[idx - 1], pkt);
     846         620 :             if (ret == AVERROR(EAGAIN)) {
     847         308 :                 ret = 0;
     848         308 :                 idx--;
     849         308 :                 continue;
     850         312 :             } else if (ret == AVERROR_EOF) {
     851           3 :                 eof = 1;
     852         309 :             } else if (ret < 0)
     853           1 :                 goto finish;
     854             : 
     855             :             /* send it to the next filter down the chain or to the muxer */
     856         311 :             if (idx < ost->nb_bitstream_filters) {
     857           0 :                 ret = av_bsf_send_packet(ost->bsf_ctx[idx], eof ? NULL : pkt);
     858           0 :                 if (ret < 0)
     859           0 :                     goto finish;
     860           0 :                 idx++;
     861           0 :                 eof = 0;
     862         311 :             } else if (eof)
     863           3 :                 goto finish;
     864             :             else
     865         308 :                 write_packet(of, pkt, ost, 0);
     866             :         }
     867      410438 :     } else if (!eof)
     868      406311 :         write_packet(of, pkt, ost, 0);
     869             : 
     870      414877 : finish:
     871      410750 :     if (ret < 0 && ret != AVERROR_EOF) {
     872           1 :         av_log(NULL, AV_LOG_ERROR, "Error applying bitstream filters to an output "
     873             :                "packet for stream #%d:%d.\n", ost->file_index, ost->index);
     874           1 :         if(exit_on_error)
     875           0 :             exit_program(1);
     876             :     }
     877      410750 : }
     878             : 
     879      390626 : static int check_recording_time(OutputStream *ost)
     880             : {
     881      390626 :     OutputFile *of = output_files[ost->file_index];
     882             : 
     883      396627 :     if (of->recording_time != INT64_MAX &&
     884        6001 :         av_compare_ts(ost->sync_opts - ost->first_pts, ost->enc_ctx->time_base, of->recording_time,
     885        6001 :                       AV_TIME_BASE_Q) >= 0) {
     886           1 :         close_output_stream(ost);
     887           1 :         return 0;
     888             :     }
     889      390625 :     return 1;
     890             : }
     891             : 
     892      295613 : static void do_audio_out(OutputFile *of, OutputStream *ost,
     893             :                          AVFrame *frame)
     894             : {
     895      295613 :     AVCodecContext *enc = ost->enc_ctx;
     896             :     AVPacket pkt;
     897             :     int ret;
     898             : 
     899      295613 :     av_init_packet(&pkt);
     900      295613 :     pkt.data = NULL;
     901      295613 :     pkt.size = 0;
     902             : 
     903      295613 :     if (!check_recording_time(ost))
     904           0 :         return;
     905             : 
     906      295613 :     if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
     907           0 :         frame->pts = ost->sync_opts;
     908      295613 :     ost->sync_opts = frame->pts + frame->nb_samples;
     909      295613 :     ost->samples_encoded += frame->nb_samples;
     910      295613 :     ost->frames_encoded++;
     911             : 
     912      295613 :     av_assert0(pkt.size || !pkt.data);
     913      295613 :     update_benchmark(NULL);
     914      295613 :     if (debug_ts) {
     915           0 :         av_log(NULL, AV_LOG_INFO, "encoder <- type:audio "
     916             :                "frame_pts:%s frame_pts_time:%s time_base:%d/%d\n",
     917           0 :                av_ts2str(frame->pts), av_ts2timestr(frame->pts, &enc->time_base),
     918             :                enc->time_base.num, enc->time_base.den);
     919             :     }
     920             : 
     921      295613 :     ret = avcodec_send_frame(enc, frame);
     922      295613 :     if (ret < 0)
     923           0 :         goto error;
     924             : 
     925             :     while (1) {
     926      289456 :         ret = avcodec_receive_packet(enc, &pkt);
     927      585069 :         if (ret == AVERROR(EAGAIN))
     928      295613 :             break;
     929      289456 :         if (ret < 0)
     930           0 :             goto error;
     931             : 
     932      289456 :         update_benchmark("encode_audio %d.%d", ost->file_index, ost->index);
     933             : 
     934      289456 :         av_packet_rescale_ts(&pkt, enc->time_base, ost->mux_timebase);
     935             : 
     936      289456 :         if (debug_ts) {
     937           0 :             av_log(NULL, AV_LOG_INFO, "encoder -> type:audio "
     938             :                    "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
     939           0 :                    av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &enc->time_base),
     940           0 :                    av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &enc->time_base));
     941             :         }
     942             : 
     943      289456 :         output_packet(of, &pkt, ost, 0);
     944             :     }
     945             : 
     946      295613 :     return;
     947           0 : error:
     948           0 :     av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
     949           0 :     exit_program(1);
     950             : }
     951             : 
     952         592 : static void do_subtitle_out(OutputFile *of,
     953             :                             OutputStream *ost,
     954             :                             AVSubtitle *sub)
     955             : {
     956         592 :     int subtitle_out_max_size = 1024 * 1024;
     957             :     int subtitle_out_size, nb, i;
     958             :     AVCodecContext *enc;
     959             :     AVPacket pkt;
     960             :     int64_t pts;
     961             : 
     962         592 :     if (sub->pts == AV_NOPTS_VALUE) {
     963           0 :         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
     964           0 :         if (exit_on_error)
     965           0 :             exit_program(1);
     966           0 :         return;
     967             :     }
     968             : 
     969         592 :     enc = ost->enc_ctx;
     970             : 
     971         592 :     if (!subtitle_out) {
     972          29 :         subtitle_out = av_malloc(subtitle_out_max_size);
     973          29 :         if (!subtitle_out) {
     974           0 :             av_log(NULL, AV_LOG_FATAL, "Failed to allocate subtitle_out\n");
     975           0 :             exit_program(1);
     976             :         }
     977             :     }
     978             : 
     979             :     /* Note: DVB subtitle need one packet to draw them and one other
     980             :        packet to clear them */
     981             :     /* XXX: signal it in the codec context ? */
     982         592 :     if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE)
     983           0 :         nb = 2;
     984             :     else
     985         592 :         nb = 1;
     986             : 
     987             :     /* shift timestamp to honor -ss and make check_recording_time() work with -t */
     988         592 :     pts = sub->pts;
     989         592 :     if (output_files[ost->file_index]->start_time != AV_NOPTS_VALUE)
     990           0 :         pts -= output_files[ost->file_index]->start_time;
     991        1184 :     for (i = 0; i < nb; i++) {
     992         592 :         unsigned save_num_rects = sub->num_rects;
     993             : 
     994         592 :         ost->sync_opts = av_rescale_q(pts, AV_TIME_BASE_Q, enc->time_base);
     995         592 :         if (!check_recording_time(ost))
     996           0 :             return;
     997             : 
     998         592 :         sub->pts = pts;
     999             :         // start_display_time is required to be 0
    1000         592 :         sub->pts               += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
    1001         592 :         sub->end_display_time  -= sub->start_display_time;
    1002         592 :         sub->start_display_time = 0;
    1003         592 :         if (i == 1)
    1004           0 :             sub->num_rects = 0;
    1005             : 
    1006         592 :         ost->frames_encoded++;
    1007             : 
    1008         592 :         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
    1009             :                                                     subtitle_out_max_size, sub);
    1010         592 :         if (i == 1)
    1011           0 :             sub->num_rects = save_num_rects;
    1012         592 :         if (subtitle_out_size < 0) {
    1013           0 :             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
    1014           0 :             exit_program(1);
    1015             :         }
    1016             : 
    1017         592 :         av_init_packet(&pkt);
    1018         592 :         pkt.data = subtitle_out;
    1019         592 :         pkt.size = subtitle_out_size;
    1020         592 :         pkt.pts  = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->mux_timebase);
    1021         592 :         pkt.duration = av_rescale_q(sub->end_display_time, (AVRational){ 1, 1000 }, ost->mux_timebase);
    1022         592 :         if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
    1023             :             /* XXX: the pts correction is handled here. Maybe handling
    1024             :                it in the codec would be better */
    1025           0 :             if (i == 0)
    1026           0 :                 pkt.pts += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, ost->mux_timebase);
    1027             :             else
    1028           0 :                 pkt.pts += av_rescale_q(sub->end_display_time, (AVRational){ 1, 1000 }, ost->mux_timebase);
    1029             :         }
    1030         592 :         pkt.dts = pkt.pts;
    1031         592 :         output_packet(of, &pkt, ost, 0);
    1032             :     }
    1033             : }
    1034             : 
    1035       96610 : static void do_video_out(OutputFile *of,
    1036             :                          OutputStream *ost,
    1037             :                          AVFrame *next_picture,
    1038             :                          double sync_ipts)
    1039             : {
    1040             :     int ret, format_video_sync;
    1041             :     AVPacket pkt;
    1042       96610 :     AVCodecContext *enc = ost->enc_ctx;
    1043       96610 :     AVCodecParameters *mux_par = ost->st->codecpar;
    1044             :     AVRational frame_rate;
    1045             :     int nb_frames, nb0_frames, i;
    1046             :     double delta, delta0;
    1047       96610 :     double duration = 0;
    1048       96610 :     int frame_size = 0;
    1049       96610 :     InputStream *ist = NULL;
    1050       96610 :     AVFilterContext *filter = ost->filter->filter;
    1051             : 
    1052       96610 :     if (ost->source_index >= 0)
    1053       95526 :         ist = input_streams[ost->source_index];
    1054             : 
    1055       96610 :     frame_rate = av_buffersink_get_frame_rate(filter);
    1056       96610 :     if (frame_rate.num > 0 && frame_rate.den > 0)
    1057       96610 :         duration = 1/(av_q2d(frame_rate) * av_q2d(enc->time_base));
    1058             : 
    1059       96610 :     if(ist && ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE && ost->frame_rate.num)
    1060       61183 :         duration = FFMIN(duration, 1/(av_q2d(ost->frame_rate) * av_q2d(enc->time_base)));
    1061             : 
    1062      193123 :     if (!ost->filters_script &&
    1063      187214 :         !ost->filters &&
    1064       88533 :         next_picture &&
    1065       87466 :         ist &&
    1066       87466 :         lrintf(next_picture->pkt_duration * av_q2d(ist->st->time_base) / av_q2d(enc->time_base)) > 0) {
    1067       82690 :         duration = lrintf(next_picture->pkt_duration * av_q2d(ist->st->time_base) / av_q2d(enc->time_base));
    1068             :     }
    1069             : 
    1070       96610 :     if (!next_picture) {
    1071             :         //end, flushing
    1072        2226 :         nb0_frames = nb_frames = mid_pred(ost->last_nb0_frames[0],
    1073             :                                           ost->last_nb0_frames[1],
    1074             :                                           ost->last_nb0_frames[2]);
    1075             :     } else {
    1076       94384 :         delta0 = sync_ipts - ost->sync_opts; // delta0 is the "drift" between the input frame (next_picture) and where it would fall in the output.
    1077       94384 :         delta  = delta0 + duration;
    1078             : 
    1079             :         /* by default, we output a single frame */
    1080       94384 :         nb0_frames = 0; // tracks the number of times the PREVIOUS frame should be duplicated, mostly for variable framerate (VFR)
    1081       94384 :         nb_frames = 1;
    1082             : 
    1083       94384 :         format_video_sync = video_sync_method;
    1084       94384 :         if (format_video_sync == VSYNC_AUTO) {
    1085       52643 :             if(!strcmp(of->ctx->oformat->name, "avi")) {
    1086       12500 :                 format_video_sync = VSYNC_VFR;
    1087             :             } else
    1088       40143 :                 format_video_sync = (of->ctx->oformat->flags & AVFMT_VARIABLE_FPS) ? ((of->ctx->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH : VSYNC_VFR) : VSYNC_CFR;
    1089       52643 :             if (   ist
    1090       51576 :                 && format_video_sync == VSYNC_CFR
    1091        8044 :                 && input_files[ist->file_index]->ctx->nb_streams == 1
    1092        7049 :                 && input_files[ist->file_index]->input_ts_offset == 0) {
    1093        7049 :                 format_video_sync = VSYNC_VSCFR;
    1094             :             }
    1095       52643 :             if (format_video_sync == VSYNC_CFR && copy_ts) {
    1096           0 :                 format_video_sync = VSYNC_VSCFR;
    1097             :             }
    1098             :         }
    1099       94384 :         ost->is_cfr = (format_video_sync == VSYNC_CFR || format_video_sync == VSYNC_VSCFR);
    1100             : 
    1101       94384 :         if (delta0 < 0 &&
    1102       10499 :             delta > 0 &&
    1103       10101 :             format_video_sync != VSYNC_PASSTHROUGH &&
    1104             :             format_video_sync != VSYNC_DROP) {
    1105        7333 :             if (delta0 < -0.6) {
    1106         437 :                 av_log(NULL, AV_LOG_WARNING, "Past duration %f too large\n", -delta0);
    1107             :             } else
    1108        6896 :                 av_log(NULL, AV_LOG_DEBUG, "Clipping frame in rate conversion by %f\n", -delta0);
    1109        7333 :             sync_ipts = ost->sync_opts;
    1110        7333 :             duration += delta0;
    1111        7333 :             delta0 = 0;
    1112             :         }
    1113             : 
    1114       94384 :         switch (format_video_sync) {
    1115        7049 :         case VSYNC_VSCFR:
    1116        7049 :             if (ost->frame_number == 0 && delta0 >= 0.5) {
    1117           0 :                 av_log(NULL, AV_LOG_DEBUG, "Not duplicating %d initial frames\n", (int)lrintf(delta0));
    1118           0 :                 delta = duration;
    1119           0 :                 delta0 = 0;
    1120           0 :                 ost->sync_opts = lrint(sync_ipts);
    1121             :             }
    1122             :         case VSYNC_CFR:
    1123             :             // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
    1124        8183 :             if (frame_drop_threshold && delta < frame_drop_threshold && ost->frame_number) {
    1125           0 :                 nb_frames = 0;
    1126        8183 :             } else if (delta < -1.1)
    1127           0 :                 nb_frames = 0;
    1128        8183 :             else if (delta > 1.1) {
    1129         375 :                 nb_frames = lrintf(delta);
    1130         375 :                 if (delta0 > 1.1)
    1131           2 :                     nb0_frames = lrintf(delta0 - 0.6);
    1132             :             }
    1133        8183 :             break;
    1134       44602 :         case VSYNC_VFR:
    1135       44602 :             if (delta <= -0.6)
    1136         172 :                 nb_frames = 0;
    1137       44430 :             else if (delta > 0.6)
    1138       43842 :                 ost->sync_opts = lrint(sync_ipts);
    1139       44602 :             break;
    1140       41599 :         case VSYNC_DROP:
    1141             :         case VSYNC_PASSTHROUGH:
    1142       41599 :             ost->sync_opts = lrint(sync_ipts);
    1143       41599 :             break;
    1144           0 :         default:
    1145           0 :             av_assert0(0);
    1146             :         }
    1147             :     }
    1148             : 
    1149       96610 :     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
    1150       96610 :     nb0_frames = FFMIN(nb0_frames, nb_frames);
    1151             : 
    1152       96610 :     memmove(ost->last_nb0_frames + 1,
    1153       96610 :             ost->last_nb0_frames,
    1154             :             sizeof(ost->last_nb0_frames[0]) * (FF_ARRAY_ELEMS(ost->last_nb0_frames) - 1));
    1155       96610 :     ost->last_nb0_frames[0] = nb0_frames;
    1156             : 
    1157       96610 :     if (nb0_frames == 0 && ost->last_dropped) {
    1158         172 :         nb_frames_drop++;
    1159         344 :         av_log(NULL, AV_LOG_VERBOSE,
    1160             :                "*** dropping frame %d from stream %d at ts %"PRId64"\n",
    1161         344 :                ost->frame_number, ost->st->index, ost->last_frame->pts);
    1162             :     }
    1163       96610 :     if (nb_frames > (nb0_frames && ost->last_dropped) + (nb_frames > nb0_frames)) {
    1164          49 :         if (nb_frames > dts_error_threshold * 30) {
    1165           0 :             av_log(NULL, AV_LOG_ERROR, "%d frame duplication too large, skipping\n", nb_frames - 1);
    1166           0 :             nb_frames_drop++;
    1167           0 :             return;
    1168             :         }
    1169          49 :         nb_frames_dup += nb_frames - (nb0_frames && ost->last_dropped) - (nb_frames > nb0_frames);
    1170          49 :         av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
    1171          49 :         if (nb_frames_dup > dup_warning) {
    1172           0 :             av_log(NULL, AV_LOG_WARNING, "More than %d frames duplicated\n", dup_warning);
    1173           0 :             dup_warning *= 10;
    1174             :         }
    1175             :     }
    1176       96610 :     ost->last_dropped = nb_frames == nb0_frames && next_picture;
    1177             : 
    1178             :   /* duplicates frame if needed */
    1179      191030 :   for (i = 0; i < nb_frames; i++) {
    1180             :     AVFrame *in_picture;
    1181       94421 :     av_init_packet(&pkt);
    1182       94421 :     pkt.data = NULL;
    1183       94421 :     pkt.size = 0;
    1184             : 
    1185       94421 :     if (i < nb0_frames && ost->last_frame) {
    1186          69 :         in_picture = ost->last_frame;
    1187             :     } else
    1188       94352 :         in_picture = next_picture;
    1189             : 
    1190       94421 :     if (!in_picture)
    1191           0 :         return;
    1192             : 
    1193       94421 :     in_picture->pts = ost->sync_opts;
    1194             : 
    1195             : #if 1
    1196       94421 :     if (!check_recording_time(ost))
    1197             : #else
    1198             :     if (ost->frame_number >= ost->max_frames)
    1199             : #endif
    1200           1 :         return;
    1201             : 
    1202             : #if FF_API_LAVF_FMT_RAWPICTURE
    1203       94420 :     if (of->ctx->oformat->flags & AVFMT_RAWPICTURE &&
    1204           0 :         enc->codec->id == AV_CODEC_ID_RAWVIDEO) {
    1205             :         /* raw pictures are written as AVPicture structure to
    1206             :            avoid any copies. We support temporarily the older
    1207             :            method. */
    1208           0 :         if (in_picture->interlaced_frame)
    1209           0 :             mux_par->field_order = in_picture->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
    1210             :         else
    1211           0 :             mux_par->field_order = AV_FIELD_PROGRESSIVE;
    1212           0 :         pkt.data   = (uint8_t *)in_picture;
    1213           0 :         pkt.size   =  sizeof(AVPicture);
    1214           0 :         pkt.pts    = av_rescale_q(in_picture->pts, enc->time_base, ost->mux_timebase);
    1215           0 :         pkt.flags |= AV_PKT_FLAG_KEY;
    1216             : 
    1217           0 :         output_packet(of, &pkt, ost, 0);
    1218             :     } else
    1219             : #endif
    1220             :     {
    1221       94420 :         int forced_keyframe = 0;
    1222             :         double pts_time;
    1223             : 
    1224       95300 :         if (enc->flags & (AV_CODEC_FLAG_INTERLACED_DCT | AV_CODEC_FLAG_INTERLACED_ME) &&
    1225         880 :             ost->top_field_first >= 0)
    1226          25 :             in_picture->top_field_first = !!ost->top_field_first;
    1227             : 
    1228       94420 :         if (in_picture->interlaced_frame) {
    1229        6224 :             if (enc->codec->id == AV_CODEC_ID_MJPEG)
    1230           0 :                 mux_par->field_order = in_picture->top_field_first ? AV_FIELD_TT:AV_FIELD_BB;
    1231             :             else
    1232        6224 :                 mux_par->field_order = in_picture->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
    1233             :         } else
    1234       88196 :             mux_par->field_order = AV_FIELD_PROGRESSIVE;
    1235             : 
    1236       94420 :         in_picture->quality = enc->global_quality;
    1237       94420 :         in_picture->pict_type = 0;
    1238             : 
    1239      188840 :         pts_time = in_picture->pts != AV_NOPTS_VALUE ?
    1240       94420 :             in_picture->pts * av_q2d(enc->time_base) : NAN;
    1241       94459 :         if (ost->forced_kf_index < ost->forced_kf_count &&
    1242          39 :             in_picture->pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
    1243           2 :             ost->forced_kf_index++;
    1244           2 :             forced_keyframe = 1;
    1245       94418 :         } else if (ost->forced_keyframes_pexpr) {
    1246             :             double res;
    1247           0 :             ost->forced_keyframes_expr_const_values[FKF_T] = pts_time;
    1248           0 :             res = av_expr_eval(ost->forced_keyframes_pexpr,
    1249           0 :                                ost->forced_keyframes_expr_const_values, NULL);
    1250             :             ff_dlog(NULL, "force_key_frame: n:%f n_forced:%f prev_forced_n:%f t:%f prev_forced_t:%f -> res:%f\n",
    1251             :                     ost->forced_keyframes_expr_const_values[FKF_N],
    1252             :                     ost->forced_keyframes_expr_const_values[FKF_N_FORCED],
    1253             :                     ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N],
    1254             :                     ost->forced_keyframes_expr_const_values[FKF_T],
    1255             :                     ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T],
    1256             :                     res);
    1257           0 :             if (res) {
    1258           0 :                 forced_keyframe = 1;
    1259           0 :                 ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N] =
    1260           0 :                     ost->forced_keyframes_expr_const_values[FKF_N];
    1261           0 :                 ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T] =
    1262           0 :                     ost->forced_keyframes_expr_const_values[FKF_T];
    1263           0 :                 ost->forced_keyframes_expr_const_values[FKF_N_FORCED] += 1;
    1264             :             }
    1265             : 
    1266           0 :             ost->forced_keyframes_expr_const_values[FKF_N] += 1;
    1267       94418 :         } else if (   ost->forced_keyframes
    1268          48 :                    && !strncmp(ost->forced_keyframes, "source", 6)
    1269           0 :                    && in_picture->key_frame==1) {
    1270           0 :             forced_keyframe = 1;
    1271             :         }
    1272             : 
    1273       94420 :         if (forced_keyframe) {
    1274           2 :             in_picture->pict_type = AV_PICTURE_TYPE_I;
    1275           2 :             av_log(NULL, AV_LOG_DEBUG, "Forced keyframe at time %f\n", pts_time);
    1276             :         }
    1277             : 
    1278       94420 :         update_benchmark(NULL);
    1279       94420 :         if (debug_ts) {
    1280           0 :             av_log(NULL, AV_LOG_INFO, "encoder <- type:video "
    1281             :                    "frame_pts:%s frame_pts_time:%s time_base:%d/%d\n",
    1282           0 :                    av_ts2str(in_picture->pts), av_ts2timestr(in_picture->pts, &enc->time_base),
    1283             :                    enc->time_base.num, enc->time_base.den);
    1284             :         }
    1285             : 
    1286       94420 :         ost->frames_encoded++;
    1287             : 
    1288       94420 :         ret = avcodec_send_frame(enc, in_picture);
    1289       94420 :         if (ret < 0)
    1290           0 :             goto error;
    1291             : 
    1292             :         while (1) {
    1293      282906 :             ret = avcodec_receive_packet(enc, &pkt);
    1294      188663 :             update_benchmark("encode_video %d.%d", ost->file_index, ost->index);
    1295      188663 :             if (ret == AVERROR(EAGAIN))
    1296       94420 :                 break;
    1297       94243 :             if (ret < 0)
    1298           0 :                 goto error;
    1299             : 
    1300       94243 :             if (debug_ts) {
    1301           0 :                 av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
    1302             :                        "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
    1303           0 :                        av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &enc->time_base),
    1304           0 :                        av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &enc->time_base));
    1305             :             }
    1306             : 
    1307       94243 :             if (pkt.pts == AV_NOPTS_VALUE && !(enc->codec->capabilities & AV_CODEC_CAP_DELAY))
    1308           0 :                 pkt.pts = ost->sync_opts;
    1309             : 
    1310       94243 :             av_packet_rescale_ts(&pkt, enc->time_base, ost->mux_timebase);
    1311             : 
    1312       94243 :             if (debug_ts) {
    1313           0 :                 av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
    1314             :                     "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
    1315           0 :                     av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->mux_timebase),
    1316           0 :                     av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->mux_timebase));
    1317             :             }
    1318             : 
    1319       94243 :             frame_size = pkt.size;
    1320       94243 :             output_packet(of, &pkt, ost, 0);
    1321             : 
    1322             :             /* if two pass, output log */
    1323       94243 :             if (ost->logfile && enc->stats_out) {
    1324           0 :                 fprintf(ost->logfile, "%s", enc->stats_out);
    1325             :             }
    1326             :         }
    1327             :     }
    1328       94420 :     ost->sync_opts++;
    1329             :     /*
    1330             :      * For video, number of frames in == number of packets out.
    1331             :      * But there may be reordering, so we can't throw away frames on encoder
    1332             :      * flush, we need to limit them here, before they go into encoder.
    1333             :      */
    1334       94420 :     ost->frame_number++;
    1335             : 
    1336       94420 :     if (vstats_filename && frame_size)
    1337           0 :         do_video_stats(ost, frame_size);
    1338             :   }
    1339             : 
    1340       96609 :     if (!ost->last_frame)
    1341        4108 :         ost->last_frame = av_frame_alloc();
    1342       96609 :     av_frame_unref(ost->last_frame);
    1343       96609 :     if (next_picture && ost->last_frame)
    1344       94383 :         av_frame_ref(ost->last_frame, next_picture);
    1345             :     else
    1346        2226 :         av_frame_free(&ost->last_frame);
    1347             : 
    1348       96609 :     return;
    1349           0 : error:
    1350           0 :     av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
    1351           0 :     exit_program(1);
    1352             : }
    1353             : 
    1354           0 : static double psnr(double d)
    1355             : {
    1356           0 :     return -10.0 * log10(d);
    1357             : }
    1358             : 
    1359           0 : static void do_video_stats(OutputStream *ost, int frame_size)
    1360             : {
    1361             :     AVCodecContext *enc;
    1362             :     int frame_number;
    1363             :     double ti1, bitrate, avg_bitrate;
    1364             : 
    1365             :     /* this is executed just the first time do_video_stats is called */
    1366           0 :     if (!vstats_file) {
    1367           0 :         vstats_file = fopen(vstats_filename, "w");
    1368           0 :         if (!vstats_file) {
    1369           0 :             perror("fopen");
    1370           0 :             exit_program(1);
    1371             :         }
    1372             :     }
    1373             : 
    1374           0 :     enc = ost->enc_ctx;
    1375           0 :     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
    1376           0 :         frame_number = ost->st->nb_frames;
    1377           0 :         if (vstats_version <= 1) {
    1378           0 :             fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number,
    1379           0 :                     ost->quality / (float)FF_QP2LAMBDA);
    1380             :         } else  {
    1381           0 :             fprintf(vstats_file, "out= %2d st= %2d frame= %5d q= %2.1f ", ost->file_index, ost->index, frame_number,
    1382           0 :                     ost->quality / (float)FF_QP2LAMBDA);
    1383             :         }
    1384             : 
    1385           0 :         if (ost->error[0]>=0 && (enc->flags & AV_CODEC_FLAG_PSNR))
    1386           0 :             fprintf(vstats_file, "PSNR= %6.2f ", psnr(ost->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
    1387             : 
    1388           0 :         fprintf(vstats_file,"f_size= %6d ", frame_size);
    1389             :         /* compute pts value */
    1390           0 :         ti1 = av_stream_get_end_pts(ost->st) * av_q2d(ost->st->time_base);
    1391           0 :         if (ti1 < 0.01)
    1392           0 :             ti1 = 0.01;
    1393             : 
    1394           0 :         bitrate     = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
    1395           0 :         avg_bitrate = (double)(ost->data_size * 8) / ti1 / 1000.0;
    1396           0 :         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
    1397           0 :                (double)ost->data_size / 1024, ti1, bitrate, avg_bitrate);
    1398           0 :         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(ost->pict_type));
    1399             :     }
    1400           0 : }
    1401             : 
    1402             : static int init_output_stream(OutputStream *ost, char *error, int error_len);
    1403             : 
    1404         198 : static void finish_output_stream(OutputStream *ost)
    1405             : {
    1406         198 :     OutputFile *of = output_files[ost->file_index];
    1407             :     int i;
    1408             : 
    1409         198 :     ost->finished = ENCODER_FINISHED | MUXER_FINISHED;
    1410             : 
    1411         198 :     if (of->shortest) {
    1412           0 :         for (i = 0; i < of->ctx->nb_streams; i++)
    1413           0 :             output_streams[of->ost_index + i]->finished = ENCODER_FINISHED | MUXER_FINISHED;
    1414             :     }
    1415         198 : }
    1416             : 
    1417             : /**
    1418             :  * Get and encode new output from any of the filtergraphs, without causing
    1419             :  * activity.
    1420             :  *
    1421             :  * @return  0 for success, <0 for severe errors
    1422             :  */
    1423      753202 : static int reap_filters(int flush)
    1424             : {
    1425      753202 :     AVFrame *filtered_frame = NULL;
    1426             :     int i;
    1427             : 
    1428             :     /* Reap all buffers present in the buffer sinks */
    1429     1527270 :     for (i = 0; i < nb_output_streams; i++) {
    1430      774068 :         OutputStream *ost = output_streams[i];
    1431      774068 :         OutputFile    *of = output_files[ost->file_index];
    1432             :         AVFilterContext *filter;
    1433      774068 :         AVCodecContext *enc = ost->enc_ctx;
    1434      774068 :         int ret = 0;
    1435             : 
    1436      774068 :         if (!ost->filter || !ost->filter->graph->graph)
    1437       37846 :             continue;
    1438      736222 :         filter = ost->filter->filter;
    1439             : 
    1440      736222 :         if (!ost->initialized) {
    1441        5097 :             char error[1024] = "";
    1442        5097 :             ret = init_output_stream(ost, error, sizeof(error));
    1443        5097 :             if (ret < 0) {
    1444           0 :                 av_log(NULL, AV_LOG_ERROR, "Error initializing output stream %d:%d -- %s\n",
    1445             :                        ost->file_index, ost->index, error);
    1446           0 :                 exit_program(1);
    1447             :             }
    1448             :         }
    1449             : 
    1450      736222 :         if (!ost->filtered_frame && !(ost->filtered_frame = av_frame_alloc())) {
    1451           0 :             return AVERROR(ENOMEM);
    1452             :         }
    1453      736222 :         filtered_frame = ost->filtered_frame;
    1454             : 
    1455      389997 :         while (1) {
    1456     1126219 :             double float_pts = AV_NOPTS_VALUE; // this is identical to filtered_frame.pts but with higher precision
    1457     1126219 :             ret = av_buffersink_get_frame_flags(filter, filtered_frame,
    1458             :                                                AV_BUFFERSINK_FLAG_NO_REQUEST);
    1459     1126219 :             if (ret < 0) {
    1460      736222 :                 if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF) {
    1461           0 :                     av_log(NULL, AV_LOG_WARNING,
    1462           0 :                            "Error in av_buffersink_get_frame_flags(): %s\n", av_err2str(ret));
    1463      736222 :                 } else if (flush && ret == AVERROR_EOF) {
    1464        3283 :                     if (av_buffersink_get_type(filter) == AVMEDIA_TYPE_VIDEO)
    1465        2226 :                         do_video_out(of, ost, NULL, AV_NOPTS_VALUE);
    1466             :                 }
    1467      736222 :                 break;
    1468             :             }
    1469      389997 :             if (ost->finished) {
    1470           0 :                 av_frame_unref(filtered_frame);
    1471           0 :                 continue;
    1472             :             }
    1473      389997 :             if (filtered_frame->pts != AV_NOPTS_VALUE) {
    1474      389997 :                 int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time;
    1475      389997 :                 AVRational filter_tb = av_buffersink_get_time_base(filter);
    1476      389997 :                 AVRational tb = enc->time_base;
    1477      389997 :                 int extra_bits = av_clip(29 - av_log2(tb.den), 0, 16);
    1478             : 
    1479      389997 :                 tb.den <<= extra_bits;
    1480      389997 :                 float_pts =
    1481      779994 :                     av_rescale_q(filtered_frame->pts, filter_tb, tb) -
    1482      389997 :                     av_rescale_q(start_time, AV_TIME_BASE_Q, tb);
    1483      389997 :                 float_pts /= 1 << extra_bits;
    1484             :                 // 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
    1485      389997 :                 float_pts += FFSIGN(float_pts) * 1.0 / (1<<17);
    1486             : 
    1487      389997 :                 filtered_frame->pts =
    1488      779994 :                     av_rescale_q(filtered_frame->pts, filter_tb, enc->time_base) -
    1489      389997 :                     av_rescale_q(start_time, AV_TIME_BASE_Q, enc->time_base);
    1490             :             }
    1491             :             //if (ost->source_index >= 0)
    1492             :             //    *filtered_frame= *input_streams[ost->source_index]->decoded_frame; //for me_threshold
    1493             : 
    1494      389997 :             switch (av_buffersink_get_type(filter)) {
    1495       94384 :             case AVMEDIA_TYPE_VIDEO:
    1496       94384 :                 if (!ost->frame_aspect_ratio.num)
    1497       94384 :                     enc->sample_aspect_ratio = filtered_frame->sample_aspect_ratio;
    1498             : 
    1499       94384 :                 if (debug_ts) {
    1500           0 :                     av_log(NULL, AV_LOG_INFO, "filter -> pts:%s pts_time:%s exact:%f time_base:%d/%d\n",
    1501           0 :                             av_ts2str(filtered_frame->pts), av_ts2timestr(filtered_frame->pts, &enc->time_base),
    1502             :                             float_pts,
    1503             :                             enc->time_base.num, enc->time_base.den);
    1504             :                 }
    1505             : 
    1506       94384 :                 do_video_out(of, ost, filtered_frame, float_pts);
    1507       94384 :                 break;
    1508      295613 :             case AVMEDIA_TYPE_AUDIO:
    1509      591226 :                 if (!(enc->codec->capabilities & AV_CODEC_CAP_PARAM_CHANGE) &&
    1510      295613 :                     enc->channels != filtered_frame->channels) {
    1511           0 :                     av_log(NULL, AV_LOG_ERROR,
    1512             :                            "Audio filter graph output is not normalized and encoder does not support parameter changes\n");
    1513           0 :                     break;
    1514             :                 }
    1515      295613 :                 do_audio_out(of, ost, filtered_frame);
    1516      295613 :                 break;
    1517           0 :             default:
    1518             :                 // TODO support subtitle filters
    1519           0 :                 av_assert0(0);
    1520             :             }
    1521             : 
    1522      389997 :             av_frame_unref(filtered_frame);
    1523             :         }
    1524             :     }
    1525             : 
    1526      753202 :     return 0;
    1527             : }
    1528             : 
    1529        5175 : static void print_final_stats(int64_t total_size)
    1530             : {
    1531        5175 :     uint64_t video_size = 0, audio_size = 0, extra_size = 0, other_size = 0;
    1532        5175 :     uint64_t subtitle_size = 0;
    1533        5175 :     uint64_t data_size = 0;
    1534        5175 :     float percent = -1.0;
    1535             :     int i, j;
    1536        5175 :     int pass1_used = 1;
    1537             : 
    1538       10483 :     for (i = 0; i < nb_output_streams; i++) {
    1539        5308 :         OutputStream *ost = output_streams[i];
    1540        5308 :         switch (ost->enc_ctx->codec_type) {
    1541        4122 :             case AVMEDIA_TYPE_VIDEO: video_size += ost->data_size; break;
    1542        1141 :             case AVMEDIA_TYPE_AUDIO: audio_size += ost->data_size; break;
    1543          35 :             case AVMEDIA_TYPE_SUBTITLE: subtitle_size += ost->data_size; break;
    1544          10 :             default:                 other_size += ost->data_size; break;
    1545             :         }
    1546        5308 :         extra_size += ost->enc_ctx->extradata_size;
    1547        5308 :         data_size  += ost->data_size;
    1548        5308 :         if (   (ost->enc_ctx->flags & (AV_CODEC_FLAG_PASS1 | AV_CODEC_FLAG_PASS2))
    1549             :             != AV_CODEC_FLAG_PASS1)
    1550        5308 :             pass1_used = 0;
    1551             :     }
    1552             : 
    1553        5175 :     if (data_size && total_size>0 && total_size >= data_size)
    1554        3526 :         percent = 100.0 * (total_size - data_size) / data_size;
    1555             : 
    1556        5175 :     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: ",
    1557             :            video_size / 1024.0,
    1558             :            audio_size / 1024.0,
    1559             :            subtitle_size / 1024.0,
    1560             :            other_size / 1024.0,
    1561             :            extra_size / 1024.0);
    1562        5175 :     if (percent >= 0.0)
    1563        3526 :         av_log(NULL, AV_LOG_INFO, "%f%%", percent);
    1564             :     else
    1565        1649 :         av_log(NULL, AV_LOG_INFO, "unknown");
    1566        5175 :     av_log(NULL, AV_LOG_INFO, "\n");
    1567             : 
    1568             :     /* print verbose per-stream stats */
    1569       10408 :     for (i = 0; i < nb_input_files; i++) {
    1570        5233 :         InputFile *f = input_files[i];
    1571        5233 :         uint64_t total_packets = 0, total_size = 0;
    1572             : 
    1573        5233 :         av_log(NULL, AV_LOG_VERBOSE, "Input file #%d (%s):\n",
    1574        5233 :                i, f->ctx->filename);
    1575             : 
    1576       10767 :         for (j = 0; j < f->nb_streams; j++) {
    1577        5534 :             InputStream *ist = input_streams[f->ist_index + j];
    1578        5534 :             enum AVMediaType type = ist->dec_ctx->codec_type;
    1579             : 
    1580        5534 :             total_size    += ist->data_size;
    1581        5534 :             total_packets += ist->nb_packets;
    1582             : 
    1583        5534 :             av_log(NULL, AV_LOG_VERBOSE, "  Input stream #%d:%d (%s): ",
    1584             :                    i, j, media_type_string(type));
    1585        5534 :             av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" packets read (%"PRIu64" bytes); ",
    1586             :                    ist->nb_packets, ist->data_size);
    1587             : 
    1588        5534 :             if (ist->decoding_needed) {
    1589        5133 :                 av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" frames decoded",
    1590             :                        ist->frames_decoded);
    1591        5133 :                 if (type == AVMEDIA_TYPE_AUDIO)
    1592        1057 :                     av_log(NULL, AV_LOG_VERBOSE, " (%"PRIu64" samples)", ist->samples_decoded);
    1593        5133 :                 av_log(NULL, AV_LOG_VERBOSE, "; ");
    1594             :             }
    1595             : 
    1596        5534 :             av_log(NULL, AV_LOG_VERBOSE, "\n");
    1597             :         }
    1598             : 
    1599        5233 :         av_log(NULL, AV_LOG_VERBOSE, "  Total: %"PRIu64" packets (%"PRIu64" bytes) demuxed\n",
    1600             :                total_packets, total_size);
    1601             :     }
    1602             : 
    1603       10351 :     for (i = 0; i < nb_output_files; i++) {
    1604        5176 :         OutputFile *of = output_files[i];
    1605        5176 :         uint64_t total_packets = 0, total_size = 0;
    1606             : 
    1607        5176 :         av_log(NULL, AV_LOG_VERBOSE, "Output file #%d (%s):\n",
    1608        5176 :                i, of->ctx->filename);
    1609             : 
    1610       10484 :         for (j = 0; j < of->ctx->nb_streams; j++) {
    1611        5308 :             OutputStream *ost = output_streams[of->ost_index + j];
    1612        5308 :             enum AVMediaType type = ost->enc_ctx->codec_type;
    1613             : 
    1614        5308 :             total_size    += ost->data_size;
    1615        5308 :             total_packets += ost->packets_written;
    1616             : 
    1617        5308 :             av_log(NULL, AV_LOG_VERBOSE, "  Output stream #%d:%d (%s): ",
    1618             :                    i, j, media_type_string(type));
    1619        5308 :             if (ost->encoding_needed) {
    1620        5126 :                 av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" frames encoded",
    1621             :                        ost->frames_encoded);
    1622        5126 :                 if (type == AVMEDIA_TYPE_AUDIO)
    1623        1053 :                     av_log(NULL, AV_LOG_VERBOSE, " (%"PRIu64" samples)", ost->samples_encoded);
    1624        5126 :                 av_log(NULL, AV_LOG_VERBOSE, "; ");
    1625             :             }
    1626             : 
    1627        5308 :             av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" packets muxed (%"PRIu64" bytes); ",
    1628             :                    ost->packets_written, ost->data_size);
    1629             : 
    1630        5308 :             av_log(NULL, AV_LOG_VERBOSE, "\n");
    1631             :         }
    1632             : 
    1633        5176 :         av_log(NULL, AV_LOG_VERBOSE, "  Total: %"PRIu64" packets (%"PRIu64" bytes) muxed\n",
    1634             :                total_packets, total_size);
    1635             :     }
    1636        5175 :     if(video_size + data_size + audio_size + subtitle_size + extra_size == 0){
    1637           5 :         av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded ");
    1638           5 :         if (pass1_used) {
    1639           1 :             av_log(NULL, AV_LOG_WARNING, "\n");
    1640             :         } else {
    1641           4 :             av_log(NULL, AV_LOG_WARNING, "(check -ss / -t / -frames parameters if used)\n");
    1642             :         }
    1643             :     }
    1644        5175 : }
    1645             : 
    1646     1542634 : static void print_report(int is_last_report, int64_t timer_start, int64_t cur_time)
    1647             : {
    1648             :     char buf[1024];
    1649             :     AVBPrint buf_script;
    1650             :     OutputStream *ost;
    1651             :     AVFormatContext *oc;
    1652             :     int64_t total_size;
    1653             :     AVCodecContext *enc;
    1654             :     int frame_number, vid, i;
    1655             :     double bitrate;
    1656             :     double speed;
    1657     1542634 :     int64_t pts = INT64_MIN + 1;
    1658             :     static int64_t last_time = -1;
    1659             :     static int qp_histogram[52];
    1660             :     int hours, mins, secs, us;
    1661             :     int ret;
    1662             :     float t;
    1663             : 
    1664     1542634 :     if (!print_stats && !is_last_report && !progress_avio)
    1665     3069192 :         return;
    1666             : 
    1667       10897 :     if (!is_last_report) {
    1668        5722 :         if (last_time == -1) {
    1669          16 :             last_time = cur_time;
    1670          16 :             return;
    1671             :         }
    1672        5706 :         if ((cur_time - last_time) < 500000)
    1673        5702 :             return;
    1674           4 :         last_time = cur_time;
    1675             :     }
    1676             : 
    1677        5179 :     t = (cur_time-timer_start) / 1000000.0;
    1678             : 
    1679             : 
    1680        5179 :     oc = output_files[0]->ctx;
    1681             : 
    1682        5179 :     total_size = avio_size(oc->pb);
    1683        5179 :     if (total_size <= 0) // FIXME improve avio_size() so it works with non seekable output too
    1684          44 :         total_size = avio_tell(oc->pb);
    1685             : 
    1686        5179 :     buf[0] = '\0';
    1687        5179 :     vid = 0;
    1688        5179 :     av_bprint_init(&buf_script, 0, 1);
    1689       10491 :     for (i = 0; i < nb_output_streams; i++) {
    1690        5312 :         float q = -1;
    1691        5312 :         ost = output_streams[i];
    1692        5312 :         enc = ost->enc_ctx;
    1693        5312 :         if (!ost->stream_copy)
    1694        5131 :             q = ost->quality / (float) FF_QP2LAMBDA;
    1695             : 
    1696        5312 :         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
    1697           7 :             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
    1698           7 :             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
    1699             :                        ost->file_index, ost->index, q);
    1700             :         }
    1701        5312 :         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
    1702             :             float fps;
    1703             : 
    1704        4116 :             frame_number = ost->frame_number;
    1705        4116 :             fps = t > 1 ? frame_number / t : 0;
    1706        4116 :             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3.*f q=%3.1f ",
    1707             :                      frame_number, fps < 9.95, fps, q);
    1708        4116 :             av_bprintf(&buf_script, "frame=%d\n", frame_number);
    1709        4116 :             av_bprintf(&buf_script, "fps=%.1f\n", fps);
    1710        4116 :             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
    1711             :                        ost->file_index, ost->index, q);
    1712        4116 :             if (is_last_report)
    1713        4115 :                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
    1714        4116 :             if (qp_hist) {
    1715             :                 int j;
    1716           0 :                 int qp = lrintf(q);
    1717           0 :                 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
    1718           0 :                     qp_histogram[qp]++;
    1719           0 :                 for (j = 0; j < 32; j++)
    1720           0 :                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", av_log2(qp_histogram[j] + 1));
    1721             :             }
    1722             : 
    1723        4116 :             if ((enc->flags & AV_CODEC_FLAG_PSNR) && (ost->pict_type != AV_PICTURE_TYPE_NONE || is_last_report)) {
    1724             :                 int j;
    1725           0 :                 double error, error_sum = 0;
    1726           0 :                 double scale, scale_sum = 0;
    1727             :                 double p;
    1728           0 :                 char type[3] = { 'Y','U','V' };
    1729           0 :                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
    1730           0 :                 for (j = 0; j < 3; j++) {
    1731           0 :                     if (is_last_report) {
    1732           0 :                         error = enc->error[j];
    1733           0 :                         scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
    1734             :                     } else {
    1735           0 :                         error = ost->error[j];
    1736           0 :                         scale = enc->width * enc->height * 255.0 * 255.0;
    1737             :                     }
    1738           0 :                     if (j)
    1739           0 :                         scale /= 4;
    1740           0 :                     error_sum += error;
    1741           0 :                     scale_sum += scale;
    1742           0 :                     p = psnr(error / scale);
    1743           0 :                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], p);
    1744           0 :                     av_bprintf(&buf_script, "stream_%d_%d_psnr_%c=%2.2f\n",
    1745           0 :                                ost->file_index, ost->index, type[j] | 32, p);
    1746             :                 }
    1747           0 :                 p = psnr(error_sum / scale_sum);
    1748           0 :                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
    1749           0 :                 av_bprintf(&buf_script, "stream_%d_%d_psnr_all=%2.2f\n",
    1750             :                            ost->file_index, ost->index, p);
    1751             :             }
    1752        4116 :             vid = 1;
    1753             :         }
    1754             :         /* compute min output value */
    1755        5312 :         if (av_stream_get_end_pts(ost->st) != AV_NOPTS_VALUE)
    1756        5312 :             pts = FFMAX(pts, av_rescale_q(av_stream_get_end_pts(ost->st),
    1757             :                                           ost->st->time_base, AV_TIME_BASE_Q));
    1758        5312 :         if (is_last_report)
    1759        5308 :             nb_frames_drop += ost->last_dropped;
    1760             :     }
    1761             : 
    1762        5179 :     secs = FFABS(pts) / AV_TIME_BASE;
    1763        5179 :     us = FFABS(pts) % AV_TIME_BASE;
    1764        5179 :     mins = secs / 60;
    1765        5179 :     secs %= 60;
    1766        5179 :     hours = mins / 60;
    1767        5179 :     mins %= 60;
    1768             : 
    1769        5179 :     bitrate = pts && total_size >= 0 ? total_size * 8 / (pts / 1000.0) : -1;
    1770        5179 :     speed = t != 0.0 ? (double)pts / AV_TIME_BASE / t : -1;
    1771             : 
    1772        5179 :     if (total_size < 0) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
    1773             :                                  "size=N/A time=");
    1774        5135 :     else                snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
    1775             :                                  "size=%8.0fkB time=", total_size / 1024.0);
    1776        5179 :     if (pts < 0)
    1777           1 :         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "-");
    1778        5179 :     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
    1779             :              "%02d:%02d:%02d.%02d ", hours, mins, secs,
    1780        5179 :              (100 * us) / AV_TIME_BASE);
    1781             : 
    1782        5179 :     if (bitrate < 0) {
    1783          55 :         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),"bitrate=N/A");
    1784          55 :         av_bprintf(&buf_script, "bitrate=N/A\n");
    1785             :     }else{
    1786        5124 :         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),"bitrate=%6.1fkbits/s", bitrate);
    1787        5124 :         av_bprintf(&buf_script, "bitrate=%6.1fkbits/s\n", bitrate);
    1788             :     }
    1789             : 
    1790        5179 :     if (total_size < 0) av_bprintf(&buf_script, "total_size=N/A\n");
    1791        5135 :     else                av_bprintf(&buf_script, "total_size=%"PRId64"\n", total_size);
    1792        5179 :     av_bprintf(&buf_script, "out_time_ms=%"PRId64"\n", pts);
    1793        5179 :     av_bprintf(&buf_script, "out_time=%02d:%02d:%02d.%06d\n",
    1794             :                hours, mins, secs, us);
    1795             : 
    1796        5179 :     if (nb_frames_dup || nb_frames_drop)
    1797          27 :         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
    1798             :                 nb_frames_dup, nb_frames_drop);
    1799        5179 :     av_bprintf(&buf_script, "dup_frames=%d\n", nb_frames_dup);
    1800        5179 :     av_bprintf(&buf_script, "drop_frames=%d\n", nb_frames_drop);
    1801             : 
    1802        5179 :     if (speed < 0) {
    1803           1 :         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf)," speed=N/A");
    1804           1 :         av_bprintf(&buf_script, "speed=N/A\n");
    1805             :     } else {
    1806        5178 :         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf)," speed=%4.3gx", speed);
    1807        5178 :         av_bprintf(&buf_script, "speed=%4.3gx\n", speed);
    1808             :     }
    1809             : 
    1810        5179 :     if (print_stats || is_last_report) {
    1811        5179 :         const char end = is_last_report ? '\n' : '\r';
    1812        5179 :         if (print_stats==1 && AV_LOG_INFO > av_log_get_level()) {
    1813           0 :             fprintf(stderr, "%s    %c", buf, end);
    1814             :         } else
    1815        5179 :             av_log(NULL, AV_LOG_INFO, "%s    %c", buf, end);
    1816             : 
    1817        5179 :     fflush(stderr);
    1818             :     }
    1819             : 
    1820        5179 :     if (progress_avio) {
    1821           0 :         av_bprintf(&buf_script, "progress=%s\n",
    1822             :                    is_last_report ? "end" : "continue");
    1823           0 :         avio_write(progress_avio, buf_script.str,
    1824           0 :                    FFMIN(buf_script.len, buf_script.size - 1));
    1825           0 :         avio_flush(progress_avio);
    1826           0 :         av_bprint_finalize(&buf_script, NULL);
    1827           0 :         if (is_last_report) {
    1828           0 :             if ((ret = avio_closep(&progress_avio)) < 0)
    1829           0 :                 av_log(NULL, AV_LOG_ERROR,
    1830           0 :                        "Error closing progress log, loss of information possible: %s\n", av_err2str(ret));
    1831             :         }
    1832             :     }
    1833             : 
    1834        5179 :     if (is_last_report)
    1835        5175 :         print_final_stats(total_size);
    1836             : }
    1837             : 
    1838        5175 : static void flush_encoders(void)
    1839             : {
    1840             :     int i, ret;
    1841             : 
    1842       10483 :     for (i = 0; i < nb_output_streams; i++) {
    1843        5308 :         OutputStream   *ost = output_streams[i];
    1844        5308 :         AVCodecContext *enc = ost->enc_ctx;
    1845        5308 :         OutputFile      *of = output_files[ost->file_index];
    1846             : 
    1847        5308 :         if (!ost->encoding_needed)
    1848         182 :             continue;
    1849             : 
    1850             :         // Try to enable encoding with no input frames.
    1851             :         // Maybe we should just let encoding fail instead.
    1852        5126 :         if (!ost->initialized) {
    1853           0 :             FilterGraph *fg = ost->filter->graph;
    1854           0 :             char error[1024] = "";
    1855             : 
    1856           0 :             av_log(NULL, AV_LOG_WARNING,
    1857             :                    "Finishing stream %d:%d without any data written to it.\n",
    1858           0 :                    ost->file_index, ost->st->index);
    1859             : 
    1860           0 :             if (ost->filter && !fg->graph) {
    1861             :                 int x;
    1862           0 :                 for (x = 0; x < fg->nb_inputs; x++) {
    1863           0 :                     InputFilter *ifilter = fg->inputs[x];
    1864           0 :                     if (ifilter->format < 0) {
    1865           0 :                         AVCodecParameters *par = ifilter->ist->st->codecpar;
    1866             :                         // We never got any input. Set a fake format, which will
    1867             :                         // come from libavformat.
    1868           0 :                         ifilter->format                 = par->format;
    1869           0 :                         ifilter->sample_rate            = par->sample_rate;
    1870           0 :                         ifilter->channels               = par->channels;
    1871           0 :                         ifilter->channel_layout         = par->channel_layout;
    1872           0 :                         ifilter->width                  = par->width;
    1873           0 :                         ifilter->height                 = par->height;
    1874           0 :                         ifilter->sample_aspect_ratio    = par->sample_aspect_ratio;
    1875             :                     }
    1876             :                 }
    1877             : 
    1878           0 :                 if (!ifilter_has_all_input_formats(fg))
    1879           0 :                     continue;
    1880             : 
    1881           0 :                 ret = configure_filtergraph(fg);
    1882           0 :                 if (ret < 0) {
    1883           0 :                     av_log(NULL, AV_LOG_ERROR, "Error configuring filter graph\n");
    1884           0 :                     exit_program(1);
    1885             :                 }
    1886             : 
    1887           0 :                 finish_output_stream(ost);
    1888             :             }
    1889             : 
    1890           0 :             ret = init_output_stream(ost, error, sizeof(error));
    1891           0 :             if (ret < 0) {
    1892           0 :                 av_log(NULL, AV_LOG_ERROR, "Error initializing output stream %d:%d -- %s\n",
    1893             :                        ost->file_index, ost->index, error);
    1894           0 :                 exit_program(1);
    1895             :             }
    1896             :         }
    1897             : 
    1898        5126 :         if (enc->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
    1899         967 :             continue;
    1900             : #if FF_API_LAVF_FMT_RAWPICTURE
    1901        4159 :         if (enc->codec_type == AVMEDIA_TYPE_VIDEO && (of->ctx->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == AV_CODEC_ID_RAWVIDEO)
    1902           0 :             continue;
    1903             : #endif
    1904             : 
    1905        4159 :         if (enc->codec_type != AVMEDIA_TYPE_VIDEO && enc->codec_type != AVMEDIA_TYPE_AUDIO)
    1906          29 :             continue;
    1907             : 
    1908         216 :         for (;;) {
    1909        4346 :             const char *desc = NULL;
    1910             :             AVPacket pkt;
    1911             :             int pkt_size;
    1912             : 
    1913        4346 :             switch (enc->codec_type) {
    1914         125 :             case AVMEDIA_TYPE_AUDIO:
    1915         125 :                 desc   = "audio";
    1916         125 :                 break;
    1917        4221 :             case AVMEDIA_TYPE_VIDEO:
    1918        4221 :                 desc   = "video";
    1919        4221 :                 break;
    1920           0 :             default:
    1921           0 :                 av_assert0(0);
    1922             :             }
    1923             : 
    1924        4346 :                 av_init_packet(&pkt);
    1925        4346 :                 pkt.data = NULL;
    1926        4346 :                 pkt.size = 0;
    1927             : 
    1928        4346 :                 update_benchmark(NULL);
    1929             : 
    1930        4346 :                 while ((ret = avcodec_receive_packet(enc, &pkt)) == AVERROR(EAGAIN)) {
    1931        4130 :                     ret = avcodec_send_frame(enc, NULL);
    1932        4130 :                     if (ret < 0) {
    1933           0 :                         av_log(NULL, AV_LOG_FATAL, "%s encoding failed: %s\n",
    1934             :                                desc,
    1935           0 :                                av_err2str(ret));
    1936           0 :                         exit_program(1);
    1937             :                     }
    1938             :                 }
    1939             : 
    1940        4346 :                 update_benchmark("flush_%s %d.%d", desc, ost->file_index, ost->index);
    1941        4346 :                 if (ret < 0 && ret != AVERROR_EOF) {
    1942           0 :                     av_log(NULL, AV_LOG_FATAL, "%s encoding failed: %s\n",
    1943             :                            desc,
    1944           0 :                            av_err2str(ret));
    1945           0 :                     exit_program(1);
    1946             :                 }
    1947        4346 :                 if (ost->logfile && enc->stats_out) {
    1948           0 :                     fprintf(ost->logfile, "%s", enc->stats_out);
    1949             :                 }
    1950        4346 :                 if (ret == AVERROR_EOF) {
    1951        4130 :                     output_packet(of, &pkt, ost, 1);
    1952        4130 :                     break;
    1953             :                 }
    1954         216 :                 if (ost->finished & MUXER_FINISHED) {
    1955           0 :                     av_packet_unref(&pkt);
    1956           0 :                     continue;
    1957             :                 }
    1958         216 :                 av_packet_rescale_ts(&pkt, enc->time_base, ost->mux_timebase);
    1959         216 :                 pkt_size = pkt.size;
    1960         216 :                 output_packet(of, &pkt, ost, 0);
    1961         216 :                 if (ost->enc_ctx->codec_type == AVMEDIA_TYPE_VIDEO && vstats_filename) {
    1962           0 :                     do_video_stats(ost, pkt_size);
    1963             :                 }
    1964             :         }
    1965             :     }
    1966        5175 : }
    1967             : 
    1968             : /*
    1969             :  * Check whether a packet from ist should be written into ost at this time
    1970             :  */
    1971      392030 : static int check_output_constraints(InputStream *ist, OutputStream *ost)
    1972             : {
    1973      392030 :     OutputFile *of = output_files[ost->file_index];
    1974      392030 :     int ist_index  = input_files[ist->file_index]->ist_index + ist->st->index;
    1975             : 
    1976      392030 :     if (ost->source_index != ist_index)
    1977       15755 :         return 0;
    1978             : 
    1979      376275 :     if (ost->finished)
    1980          24 :         return 0;
    1981             : 
    1982      376251 :     if (of->start_time != AV_NOPTS_VALUE && ist->pts < of->start_time)
    1983           0 :         return 0;
    1984             : 
    1985      376251 :     return 1;
    1986             : }
    1987             : 
    1988       22131 : static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
    1989             : {
    1990       22131 :     OutputFile *of = output_files[ost->file_index];
    1991       22131 :     InputFile   *f = input_files [ist->file_index];
    1992       22131 :     int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time;
    1993       22131 :     int64_t ost_tb_start_time = av_rescale_q(start_time, AV_TIME_BASE_Q, ost->mux_timebase);
    1994             :     AVPicture pict;
    1995             :     AVPacket opkt;
    1996             : 
    1997       22131 :     av_init_packet(&opkt);
    1998             : 
    1999       22142 :     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
    2000          11 :         !ost->copy_initial_nonkeyframes)
    2001          29 :         return;
    2002             : 
    2003       22120 :     if (!ost->frame_number && !ost->copy_prior_start) {
    2004           0 :         int64_t comp_start = start_time;
    2005           0 :         if (copy_ts && f->start_time != AV_NOPTS_VALUE)
    2006           0 :             comp_start = FFMAX(start_time, f->start_time + f->ts_offset);
    2007           0 :         if (pkt->pts == AV_NOPTS_VALUE ?
    2008           0 :             ist->pts < comp_start :
    2009           0 :             pkt->pts < av_rescale_q(comp_start, AV_TIME_BASE_Q, ist->st->time_base))
    2010           0 :             return;
    2011             :     }
    2012             : 
    2013       22536 :     if (of->recording_time != INT64_MAX &&
    2014         416 :         ist->pts >= of->recording_time + start_time) {
    2015           5 :         close_output_stream(ost);
    2016           5 :         return;
    2017             :     }
    2018             : 
    2019       22115 :     if (f->recording_time != INT64_MAX) {
    2020         148 :         start_time = f->ctx->start_time;
    2021         148 :         if (f->start_time != AV_NOPTS_VALUE && copy_ts)
    2022          74 :             start_time += f->start_time;
    2023         148 :         if (ist->pts >= f->recording_time + start_time) {
    2024           2 :             close_output_stream(ost);
    2025           2 :             return;
    2026             :         }
    2027             :     }
    2028             : 
    2029             :     /* force the input stream PTS */
    2030       22113 :     if (ost->enc_ctx->codec_type == AVMEDIA_TYPE_VIDEO)
    2031        3588 :         ost->sync_opts++;
    2032             : 
    2033       22113 :     if (pkt->pts != AV_NOPTS_VALUE)
    2034       21584 :         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->mux_timebase) - ost_tb_start_time;
    2035             :     else
    2036         529 :         opkt.pts = AV_NOPTS_VALUE;
    2037             : 
    2038       22113 :     if (pkt->dts == AV_NOPTS_VALUE)
    2039         285 :         opkt.dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ost->mux_timebase);
    2040             :     else
    2041       21828 :         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->mux_timebase);
    2042       22113 :     opkt.dts -= ost_tb_start_time;
    2043             : 
    2044       22113 :     if (ost->st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO && pkt->dts != AV_NOPTS_VALUE) {
    2045       18005 :         int duration = av_get_audio_frame_duration(ist->dec_ctx, pkt->size);
    2046       18005 :         if(!duration)
    2047        6079 :             duration = ist->dec_ctx->frame_size;
    2048       54015 :         opkt.dts = opkt.pts = av_rescale_delta(ist->st->time_base, pkt->dts,
    2049       18005 :                                                (AVRational){1, ist->dec_ctx->sample_rate}, duration, &ist->filter_in_rescale_delta_last,
    2050       18005 :                                                ost->mux_timebase) - ost_tb_start_time;
    2051             :     }
    2052             : 
    2053       22113 :     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->mux_timebase);
    2054             : 
    2055       22113 :     opkt.flags    = pkt->flags;
    2056             :     // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
    2057       22113 :     if (  ost->st->codecpar->codec_id != AV_CODEC_ID_H264
    2058       20574 :        && ost->st->codecpar->codec_id != AV_CODEC_ID_MPEG1VIDEO
    2059       20574 :        && ost->st->codecpar->codec_id != AV_CODEC_ID_MPEG2VIDEO
    2060       20479 :        && ost->st->codecpar->codec_id != AV_CODEC_ID_VC1
    2061       20479 :        ) {
    2062       40958 :         int ret = av_parser_change(ost->parser, ost->parser_avctx,
    2063             :                              &opkt.data, &opkt.size,
    2064       20479 :                              pkt->data, pkt->size,
    2065       20479 :                              pkt->flags & AV_PKT_FLAG_KEY);
    2066       20479 :         if (ret < 0) {
    2067           0 :             av_log(NULL, AV_LOG_FATAL, "av_parser_change failed: %s\n",
    2068           0 :                    av_err2str(ret));
    2069           0 :             exit_program(1);
    2070             :         }
    2071       20479 :         if (ret) {
    2072           0 :             opkt.buf = av_buffer_create(opkt.data, opkt.size, av_buffer_default_free, NULL, 0);
    2073           0 :             if (!opkt.buf)
    2074           0 :                 exit_program(1);
    2075             :         }
    2076             :     } else {
    2077        1634 :         opkt.data = pkt->data;
    2078        1634 :         opkt.size = pkt->size;
    2079             :     }
    2080       22113 :     av_copy_packet_side_data(&opkt, pkt);
    2081             : 
    2082             : #if FF_API_LAVF_FMT_RAWPICTURE
    2083       25701 :     if (ost->st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
    2084        3632 :         ost->st->codecpar->codec_id == AV_CODEC_ID_RAWVIDEO &&
    2085          44 :         (of->ctx->oformat->flags & AVFMT_RAWPICTURE)) {
    2086             :         /* store AVPicture in AVPacket, as expected by the output format */
    2087           0 :         int ret = avpicture_fill(&pict, opkt.data, ost->st->codecpar->format, ost->st->codecpar->width, ost->st->codecpar->height);
    2088           0 :         if (ret < 0) {
    2089           0 :             av_log(NULL, AV_LOG_FATAL, "avpicture_fill failed: %s\n",
    2090           0 :                    av_err2str(ret));
    2091           0 :             exit_program(1);
    2092             :         }
    2093           0 :         opkt.data = (uint8_t *)&pict;
    2094           0 :         opkt.size = sizeof(AVPicture);
    2095           0 :         opkt.flags |= AV_PKT_FLAG_KEY;
    2096             :     }
    2097             : #endif
    2098             : 
    2099       22113 :     output_packet(of, &opkt, ost, 0);
    2100             : }
    2101             : 
    2102        1279 : int guess_input_channel_layout(InputStream *ist)
    2103             : {
    2104        1279 :     AVCodecContext *dec = ist->dec_ctx;
    2105             : 
    2106        1279 :     if (!dec->channel_layout) {
    2107             :         char layout_name[256];
    2108             : 
    2109         718 :         if (dec->channels > ist->guess_layout_max)
    2110           4 :             return 0;
    2111         716 :         dec->channel_layout = av_get_default_channel_layout(dec->channels);
    2112         716 :         if (!dec->channel_layout)
    2113           0 :             return 0;
    2114         716 :         av_get_channel_layout_string(layout_name, sizeof(layout_name),
    2115             :                                      dec->channels, dec->channel_layout);
    2116         716 :         av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for Input Stream "
    2117         716 :                "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
    2118             :     }
    2119        1277 :     return 1;
    2120             : }
    2121             : 
    2122      731915 : static void check_decode_result(InputStream *ist, int *got_output, int ret)
    2123             : {
    2124      731915 :     if (*got_output || ret<0)
    2125      377944 :         decode_error_stat[ret<0] ++;
    2126             : 
    2127      731915 :     if (ret < 0 && exit_on_error)
    2128           0 :         exit_program(1);
    2129             : 
    2130      731915 :     if (exit_on_error && *got_output && ist) {
    2131           0 :         if (ist->decoded_frame->decode_error_flags || (ist->decoded_frame->flags & AV_FRAME_FLAG_CORRUPT)) {
    2132           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);
    2133           0 :             exit_program(1);
    2134             :         }
    2135             :     }
    2136      731915 : }
    2137             : 
    2138             : // Filters can be configured only if the formats of all inputs are known.
    2139      799596 : static int ifilter_has_all_input_formats(FilterGraph *fg)
    2140             : {
    2141             :     int i;
    2142      831901 :     for (i = 0; i < fg->nb_inputs; i++) {
    2143     1621170 :         if (fg->inputs[i]->format < 0 && (fg->inputs[i]->type == AVMEDIA_TYPE_AUDIO ||
    2144      794422 :                                           fg->inputs[i]->type == AVMEDIA_TYPE_VIDEO))
    2145      794443 :             return 0;
    2146             :     }
    2147        5153 :     return 1;
    2148             : }
    2149             : 
    2150      377355 : static int ifilter_send_frame(InputFilter *ifilter, AVFrame *frame)
    2151             : {
    2152      377355 :     FilterGraph *fg = ifilter->graph;
    2153             :     int need_reinit, ret, i;
    2154             : 
    2155             :     /* determine if the parameters for this input changed */
    2156      377355 :     need_reinit = ifilter->format != frame->format;
    2157      754710 :     if (!!ifilter->hw_frames_ctx != !!frame->hw_frames_ctx ||
    2158      377355 :         (ifilter->hw_frames_ctx && ifilter->hw_frames_ctx->data != frame->hw_frames_ctx->data))
    2159           0 :         need_reinit = 1;
    2160             : 
    2161      377355 :     switch (ifilter->ist->st->codecpar->codec_type) {
    2162      282835 :     case AVMEDIA_TYPE_AUDIO:
    2163      847447 :         need_reinit |= ifilter->sample_rate    != frame->sample_rate ||
    2164      564611 :                        ifilter->channels       != frame->channels ||
    2165      281776 :                        ifilter->channel_layout != frame->channel_layout;
    2166      282835 :         break;
    2167       94520 :     case AVMEDIA_TYPE_VIDEO:
    2168      184971 :         need_reinit |= ifilter->width  != frame->width ||
    2169       90451 :                        ifilter->height != frame->height;
    2170       94520 :         break;
    2171             :     }
    2172             : 
    2173      377355 :     if (need_reinit) {
    2174        5141 :         ret = ifilter_parameters_from_frame(ifilter, frame);
    2175        5141 :         if (ret < 0)
    2176           0 :             return ret;
    2177             :     }
    2178             : 
    2179             :     /* (re)init the graph if possible, otherwise buffer the frame and return */
    2180      377355 :     if (need_reinit || !fg->graph) {
    2181       10284 :         for (i = 0; i < fg->nb_inputs; i++) {
    2182        5162 :             if (!ifilter_has_all_input_formats(fg)) {
    2183          19 :                 AVFrame *tmp = av_frame_clone(frame);
    2184          19 :                 if (!tmp)
    2185           0 :                     return AVERROR(ENOMEM);
    2186          19 :                 av_frame_unref(frame);
    2187             : 
    2188          19 :                 if (!av_fifo_space(ifilter->frame_queue)) {
    2189           0 :                     ret = av_fifo_realloc2(ifilter->frame_queue, 2 * av_fifo_size(ifilter->frame_queue));
    2190           0 :                     if (ret < 0) {
    2191           0 :                         av_frame_free(&tmp);
    2192           0 :                         return ret;
    2193             :                     }
    2194             :                 }
    2195          19 :                 av_fifo_generic_write(ifilter->frame_queue, &tmp, sizeof(tmp), NULL);
    2196          19 :                 return 0;
    2197             :             }
    2198             :         }
    2199             : 
    2200        5122 :         ret = reap_filters(1);
    2201        5122 :         if (ret < 0 && ret != AVERROR_EOF) {
    2202             :             char errbuf[128];
    2203           0 :             av_strerror(ret, errbuf, sizeof(errbuf));
    2204             : 
    2205           0 :             av_log(NULL, AV_LOG_ERROR, "Error while filtering: %s\n", errbuf);
    2206           0 :             return ret;
    2207             :         }
    2208             : 
    2209        5122 :         ret = configure_filtergraph(fg);
    2210        5122 :         if (ret < 0) {
    2211           0 :             av_log(NULL, AV_LOG_ERROR, "Error reinitializing filters!\n");
    2212           0 :             return ret;
    2213             :         }
    2214             :     }
    2215             : 
    2216      377336 :     ret = av_buffersrc_add_frame_flags(ifilter->filter, frame, AV_BUFFERSRC_FLAG_PUSH);
    2217      377336 :     if (ret < 0) {
    2218           0 :         if (ret != AVERROR_EOF)
    2219           0 :             av_log(NULL, AV_LOG_ERROR, "Error while filtering: %s\n", av_err2str(ret));
    2220           0 :         return ret;
    2221             :     }
    2222             : 
    2223      377336 :     return 0;
    2224             : }
    2225             : 
    2226        5095 : static int ifilter_send_eof(InputFilter *ifilter)
    2227             : {
    2228             :     int i, j, ret;
    2229             : 
    2230        5095 :     ifilter->eof = 1;
    2231             : 
    2232        5095 :     if (ifilter->filter) {
    2233        5095 :         ret = av_buffersrc_add_frame_flags(ifilter->filter, NULL, AV_BUFFERSRC_FLAG_PUSH);
    2234        5095 :         if (ret < 0)
    2235           0 :             return ret;
    2236             :     } else {
    2237             :         // the filtergraph was never configured
    2238           0 :         FilterGraph *fg = ifilter->graph;
    2239           0 :         for (i = 0; i < fg->nb_inputs; i++)
    2240           0 :             if (!fg->inputs[i]->eof)
    2241           0 :                 break;
    2242           0 :         if (i == fg->nb_inputs) {
    2243             :             // All the input streams have finished without the filtergraph
    2244             :             // ever being configured.
    2245             :             // Mark the output streams as finished.
    2246           0 :             for (j = 0; j < fg->nb_outputs; j++)
    2247           0 :                 finish_output_stream(fg->outputs[j]->ost);
    2248             :         }
    2249             :     }
    2250             : 
    2251        5095 :     return 0;
    2252             : }
    2253             : 
    2254             : // This does not quite work like avcodec_decode_audio4/avcodec_decode_video2.
    2255             : // There is the following difference: if you got a frame, you must call
    2256             : // it again with pkt=NULL. pkt==NULL is treated differently from pkt->size==0
    2257             : // (pkt==NULL means get more output, pkt->size==0 is a flush/drain packet)
    2258      736043 : static int decode(AVCodecContext *avctx, AVFrame *frame, int *got_frame, AVPacket *pkt)
    2259             : {
    2260             :     int ret;
    2261             : 
    2262      736043 :     *got_frame = 0;
    2263             : 
    2264      736043 :     if (pkt) {
    2265      359673 :         ret = avcodec_send_packet(avctx, pkt);
    2266             :         // In particular, we don't expect AVERROR(EAGAIN), because we read all
    2267             :         // decoded frames with avcodec_receive_frame() until done.
    2268      359673 :         if (ret < 0 && ret != AVERROR_EOF)
    2269         379 :             return ret;
    2270             :     }
    2271             : 
    2272      735664 :     ret = avcodec_receive_frame(avctx, frame);
    2273      735664 :     if (ret < 0 && ret != AVERROR(EAGAIN))
    2274        5097 :         return ret;
    2275      730567 :     if (ret >= 0)
    2276      376967 :         *got_frame = 1;
    2277             : 
    2278      730567 :     return 0;
    2279             : }
    2280             : 
    2281      376967 : static int send_frame_to_filters(InputStream *ist, AVFrame *decoded_frame)
    2282             : {
    2283             :     int i, ret;
    2284             :     AVFrame *f;
    2285             : 
    2286             :     av_assert1(ist->nb_filters > 0); /* ensure ret is initialized */
    2287      754322 :     for (i = 0; i < ist->nb_filters; i++) {
    2288      377355 :         if (i < ist->nb_filters - 1) {
    2289         388 :             f = ist->filter_frame;
    2290         388 :             ret = av_frame_ref(f, decoded_frame);
    2291         388 :             if (ret < 0)
    2292           0 :                 break;
    2293             :         } else
    2294      376967 :             f = decoded_frame;
    2295      377355 :         ret = ifilter_send_frame(ist->filters[i], f);
    2296      377355 :         if (ret == AVERROR_EOF)
    2297           0 :             ret = 0; /* ignore */
    2298      377355 :         if (ret < 0) {
    2299           0 :             av_log(NULL, AV_LOG_ERROR,
    2300           0 :                    "Failed to inject frame into filter network: %s\n", av_err2str(ret));
    2301           0 :             break;
    2302             :         }
    2303             :     }
    2304      376967 :     return ret;
    2305             : }
    2306             : 
    2307      539173 : static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output,
    2308             :                         int *decode_failed)
    2309             : {
    2310             :     AVFrame *decoded_frame;
    2311      539173 :     AVCodecContext *avctx = ist->dec_ctx;
    2312      539173 :     int ret, err = 0;
    2313             :     AVRational decoded_frame_tb;
    2314             : 
    2315      539173 :     if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
    2316           0 :         return AVERROR(ENOMEM);
    2317      539173 :     if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
    2318           0 :         return AVERROR(ENOMEM);
    2319      539173 :     decoded_frame = ist->decoded_frame;
    2320             : 
    2321      539173 :     update_benchmark(NULL);
    2322      539173 :     ret = decode(avctx, decoded_frame, got_output, pkt);
    2323      539173 :     update_benchmark("decode_audio %d.%d", ist->file_index, ist->st->index);
    2324      539173 :     if (ret < 0)
    2325        1066 :         *decode_failed = 1;
    2326             : 
    2327      539173 :     if (ret >= 0 && avctx->sample_rate <= 0) {
    2328           0 :         av_log(avctx, AV_LOG_ERROR, "Sample rate %d invalid\n", avctx->sample_rate);
    2329           0 :         ret = AVERROR_INVALIDDATA;
    2330             :     }
    2331             : 
    2332      539173 :     if (ret != AVERROR_EOF)
    2333      538117 :         check_decode_result(ist, got_output, ret);
    2334             : 
    2335      539173 :     if (!*got_output || ret < 0)
    2336      256726 :         return ret;
    2337             : 
    2338      282447 :     ist->samples_decoded += decoded_frame->nb_samples;
    2339      282447 :     ist->frames_decoded++;
    2340             : 
    2341             : #if 1
    2342             :     /* increment next_dts to use for the case where the input stream does not
    2343             :        have timestamps or there are multiple frames in the packet */
    2344      564894 :     ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
    2345      282447 :                      avctx->sample_rate;
    2346      564894 :     ist->next_dts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
    2347      282447 :                      avctx->sample_rate;
    2348             : #endif
    2349             : 
    2350      282447 :     if (decoded_frame->pts != AV_NOPTS_VALUE) {
    2351      254543 :         decoded_frame_tb   = ist->st->time_base;
    2352       27904 :     } else if (pkt && pkt->pts != AV_NOPTS_VALUE) {
    2353           3 :         decoded_frame->pts = pkt->pts;
    2354           3 :         decoded_frame_tb   = ist->st->time_base;
    2355             :     }else {
    2356       27901 :         decoded_frame->pts = ist->dts;
    2357       27901 :         decoded_frame_tb   = AV_TIME_BASE_Q;
    2358             :     }
    2359      282447 :     if (decoded_frame->pts != AV_NOPTS_VALUE)
    2360      564894 :         decoded_frame->pts = av_rescale_delta(decoded_frame_tb, decoded_frame->pts,
    2361      282447 :                                               (AVRational){1, avctx->sample_rate}, decoded_frame->nb_samples, &ist->filter_in_rescale_delta_last,
    2362      282447 :                                               (AVRational){1, avctx->sample_rate});
    2363      282447 :     ist->nb_samples = decoded_frame->nb_samples;
    2364      282447 :     err = send_frame_to_filters(ist, decoded_frame);
    2365             : 
    2366      282447 :     av_frame_unref(ist->filter_frame);
    2367      282447 :     av_frame_unref(decoded_frame);
    2368      282447 :     return err < 0 ? err : ret;
    2369             : }
    2370             : 
    2371      198415 : static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output, int eof,
    2372             :                         int *decode_failed)
    2373             : {
    2374             :     AVFrame *decoded_frame;
    2375      198415 :     int i, ret = 0, err = 0;
    2376             :     int64_t best_effort_timestamp;
    2377      198415 :     int64_t dts = AV_NOPTS_VALUE;
    2378             :     AVPacket avpkt;
    2379             : 
    2380             :     // With fate-indeo3-2, we're getting 0-sized packets before EOF for some
    2381             :     // reason. This seems like a semi-critical bug. Don't trigger EOF, and
    2382             :     // skip the packet.
    2383      198415 :     if (!eof && pkt && pkt->size == 0)
    2384        1545 :         return 0;
    2385             : 
    2386      196870 :     if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
    2387           0 :         return AVERROR(ENOMEM);
    2388      196870 :     if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
    2389           0 :         return AVERROR(ENOMEM);
    2390      196870 :     decoded_frame = ist->decoded_frame;
    2391      196870 :     if (ist->dts != AV_NOPTS_VALUE)
    2392      196457 :         dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
    2393      196870 :     if (pkt) {
    2394      102920 :         avpkt = *pkt;
    2395      102920 :         avpkt.dts = dts; // ffmpeg.c probably shouldn't do this
    2396             :     }
    2397             : 
    2398             :     // The old code used to set dts on the drain packet, which does not work
    2399             :     // with the new API anymore.
    2400      196870 :     if (eof) {
    2401        4606 :         void *new = av_realloc_array(ist->dts_buffer, ist->nb_dts_buffer + 1, sizeof(ist->dts_buffer[0]));
    2402        4606 :         if (!new)
    2403           0 :             return AVERROR(ENOMEM);
    2404        4606 :         ist->dts_buffer = new;
    2405        4606 :         ist->dts_buffer[ist->nb_dts_buffer++] = dts;
    2406             :     }
    2407             : 
    2408      196870 :     update_benchmark(NULL);
    2409      196870 :     ret = decode(ist->dec_ctx, decoded_frame, got_output, pkt ? &avpkt : NULL);
    2410      196870 :     update_benchmark("decode_video %d.%d", ist->file_index, ist->st->index);
    2411      196870 :     if (ret < 0)
    2412        4410 :         *decode_failed = 1;
    2413             : 
    2414             :     // The following line may be required in some cases where there is no parser
    2415             :     // or the parser does not has_b_frames correctly
    2416      196870 :     if (ist->st->codecpar->video_delay < ist->dec_ctx->has_b_frames) {
    2417           2 :         if (ist->dec_ctx->codec_id == AV_CODEC_ID_H264) {
    2418           2 :             ist->st->codecpar->video_delay = ist->dec_ctx->has_b_frames;
    2419             :         } else
    2420           0 :             av_log(ist->dec_ctx, AV_LOG_WARNING,
    2421             :                    "video_delay is larger in decoder than demuxer %d > %d.\n"
    2422             :                    "If you want to help, upload a sample "
    2423             :                    "of this file to ftp://upload.ffmpeg.org/incoming/ "
    2424             :                    "and contact the ffmpeg-devel mailing list. (ffmpeg-devel@ffmpeg.org)\n",
    2425           0 :                    ist->dec_ctx->has_b_frames,
    2426           0 :                    ist->st->codecpar->video_delay);
    2427             :     }
    2428             : 
    2429      196870 :     if (ret != AVERROR_EOF)
    2430      192834 :         check_decode_result(ist, got_output, ret);
    2431             : 
    2432      196870 :     if (*got_output && ret >= 0) {
    2433      189031 :         if (ist->dec_ctx->width  != decoded_frame->width ||
    2434      189020 :             ist->dec_ctx->height != decoded_frame->height ||
    2435       94509 :             ist->dec_ctx->pix_fmt != decoded_frame->format) {
    2436          30 :             av_log(NULL, AV_LOG_DEBUG, "Frame parameters mismatch context %d,%d,%d != %d,%d,%d\n",
    2437             :                 decoded_frame->width,
    2438             :                 decoded_frame->height,
    2439             :                 decoded_frame->format,
    2440          15 :                 ist->dec_ctx->width,
    2441          15 :                 ist->dec_ctx->height,
    2442          15 :                 ist->dec_ctx->pix_fmt);
    2443             :         }
    2444             :     }
    2445             : 
    2446      196870 :     if (!*got_output || ret < 0)
    2447      102350 :         return ret;
    2448             : 
    2449       94520 :     if(ist->top_field_first>=0)
    2450           0 :         decoded_frame->top_field_first = ist->top_field_first;
    2451             : 
    2452       94520 :     ist->frames_decoded++;
    2453             : 
    2454       94520 :     if (ist->hwaccel_retrieve_data && decoded_frame->format == ist->hwaccel_pix_fmt) {
    2455           0 :         err = ist->hwaccel_retrieve_data(ist->dec_ctx, decoded_frame);
    2456           0 :         if (err < 0)
    2457           0 :             goto fail;
    2458             :     }
    2459       94520 :     ist->hwaccel_retrieved_pix_fmt = decoded_frame->format;
    2460             : 
    2461       94520 :     best_effort_timestamp= decoded_frame->best_effort_timestamp;
    2462             : 
    2463       94520 :     if (ist->framerate.num)
    2464         103 :         best_effort_timestamp = ist->cfr_next_pts++;
    2465             : 
    2466       94520 :     if (eof && best_effort_timestamp == AV_NOPTS_VALUE && ist->nb_dts_buffer > 0) {
    2467         519 :         best_effort_timestamp = ist->dts_buffer[0];
    2468             : 
    2469         519 :         for (i = 0; i < ist->nb_dts_buffer - 1; i++)
    2470           0 :             ist->dts_buffer[i] = ist->dts_buffer[i + 1];
    2471         519 :         ist->nb_dts_buffer--;
    2472             :     }
    2473             : 
    2474       94520 :     if(best_effort_timestamp != AV_NOPTS_VALUE) {
    2475       94520 :         int64_t ts = av_rescale_q(decoded_frame->pts = best_effort_timestamp, ist->st->time_base, AV_TIME_BASE_Q);
    2476             : 
    2477       94520 :         if (ts != AV_NOPTS_VALUE)
    2478       94520 :             ist->next_pts = ist->pts = ts;
    2479             :     }
    2480             : 
    2481       94520 :     if (debug_ts) {
    2482           0 :         av_log(NULL, AV_LOG_INFO, "decoder -> ist_index:%d type:video "
    2483             :                "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",
    2484           0 :                ist->st->index, av_ts2str(decoded_frame->pts),
    2485           0 :                av_ts2timestr(decoded_frame->pts, &ist->st->time_base),
    2486             :                best_effort_timestamp,
    2487           0 :                av_ts2timestr(best_effort_timestamp, &ist->st->time_base),
    2488           0 :                decoded_frame->key_frame, decoded_frame->pict_type,
    2489           0 :                ist->st->time_base.num, ist->st->time_base.den);
    2490             :     }
    2491             : 
    2492       94520 :     if (ist->st->sample_aspect_ratio.num)
    2493        4232 :         decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
    2494             : 
    2495       94520 :     err = send_frame_to_filters(ist, decoded_frame);
    2496             : 
    2497       94520 : fail:
    2498       94520 :     av_frame_unref(ist->filter_frame);
    2499       94520 :     av_frame_unref(decoded_frame);
    2500       94520 :     return err < 0 ? err : ret;
    2501             : }
    2502             : 
    2503         964 : static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output,
    2504             :                                int *decode_failed)
    2505             : {
    2506             :     AVSubtitle subtitle;
    2507         964 :     int free_sub = 1;
    2508         964 :     int i, ret = avcodec_decode_subtitle2(ist->dec_ctx,
    2509             :                                           &subtitle, got_output, pkt);
    2510             : 
    2511         964 :     check_decode_result(NULL, got_output, ret);
    2512             : 
    2513         964 :     if (ret < 0 || !*got_output) {
    2514         371 :         *decode_failed = 1;
    2515         371 :         if (!pkt->size)
    2516          30 :             sub2video_flush(ist);
    2517         371 :         return ret;
    2518             :     }
    2519             : 
    2520         593 :     if (ist->fix_sub_duration) {
    2521           0 :         int end = 1;
    2522           0 :         if (ist->prev_sub.got_output) {
    2523           0 :             end = av_rescale(subtitle.pts - ist->prev_sub.subtitle.pts,
    2524             :                              1000, AV_TIME_BASE);
    2525           0 :             if (end < ist->prev_sub.subtitle.end_display_time) {
    2526           0 :                 av_log(ist->dec_ctx, AV_LOG_DEBUG,
    2527             :                        "Subtitle duration reduced from %"PRId32" to %d%s\n",
    2528             :                        ist->prev_sub.subtitle.end_display_time, end,
    2529             :                        end <= 0 ? ", dropping it" : "");
    2530           0 :                 ist->prev_sub.subtitle.end_display_time = end;
    2531             :             }
    2532             :         }
    2533           0 :         FFSWAP(int,        *got_output, ist->prev_sub.got_output);
    2534           0 :         FFSWAP(int,        ret,         ist->prev_sub.ret);
    2535           0 :         FFSWAP(AVSubtitle, subtitle,    ist->prev_sub.subtitle);
    2536           0 :         if (end <= 0)
    2537           0 :             goto out;
    2538             :     }
    2539             : 
    2540         593 :     if (!*got_output)
    2541           0 :         return ret;
    2542             : 
    2543         593 :     if (ist->sub2video.frame) {
    2544          44 :         sub2video_update(ist, &subtitle);
    2545         549 :     } else if (ist->nb_filters) {
    2546           0 :         if (!ist->sub2video.sub_queue)
    2547           0 :             ist->sub2video.sub_queue = av_fifo_alloc(8 * sizeof(AVSubtitle));
    2548           0 :         if (!ist->sub2video.sub_queue)
    2549           0 :             exit_program(1);
    2550           0 :         if (!av_fifo_space(ist->sub2video.sub_queue)) {
    2551           0 :             ret = av_fifo_realloc2(ist->sub2video.sub_queue, 2 * av_fifo_size(ist->sub2video.sub_queue));
    2552           0 :             if (ret < 0)
    2553           0 :                 exit_program(1);
    2554             :         }
    2555           0 :         av_fifo_generic_write(ist->sub2video.sub_queue, &subtitle, sizeof(subtitle), NULL);
    2556           0 :         free_sub = 0;
    2557             :     }
    2558             : 
    2559         593 :     if (!subtitle.num_rects)
    2560           0 :         goto out;
    2561             : 
    2562         593 :     ist->frames_decoded++;
    2563             : 
    2564        1230 :     for (i = 0; i < nb_output_streams; i++) {
    2565         637 :         OutputStream *ost = output_streams[i];
    2566             : 
    2567         637 :         if (!check_output_constraints(ist, ost) || !ost->encoding_needed
    2568         592 :             || ost->enc->type != AVMEDIA_TYPE_SUBTITLE)
    2569          45 :             continue;
    2570             : 
    2571         592 :         do_subtitle_out(output_files[ost->file_index], ost, &subtitle);
    2572             :     }
    2573             : 
    2574         593 : out:
    2575         593 :     if (free_sub)
    2576         593 :         avsubtitle_free(&subtitle);
    2577         593 :     return ret;
    2578             : }
    2579             : 
    2580        5122 : static int send_filter_eof(InputStream *ist)
    2581             : {
    2582             :     int i, ret;
    2583       10217 :     for (i = 0; i < ist->nb_filters; i++) {
    2584        5095 :         ret = ifilter_send_eof(ist->filters[i]);
    2585        5095 :         if (ret < 0)
    2586           0 :             return ret;
    2587             :     }
    2588        5122 :     return 0;
    2589             : }
    2590             : 
    2591             : /* pkt = NULL means EOF (needed to flush decoder buffers) */
    2592      384336 : static int process_input_packet(InputStream *ist, const AVPacket *pkt, int no_eof)
    2593             : {
    2594      384336 :     int ret = 0, i;
    2595      384336 :     int repeating = 0;
    2596      384336 :     int eof_reached = 0;
    2597             : 
    2598             :     AVPacket avpkt;
    2599      384336 :     if (!ist->saw_first_ts) {
    2600        5294 :         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;
    2601        5294 :         ist->pts = 0;
    2602        5294 :         if (pkt && pkt->pts != AV_NOPTS_VALUE && !ist->decoding_needed) {
    2603         141 :             ist->dts += av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
    2604         141 :             ist->pts = ist->dts; //unused but better to set it to a value thats not totally wrong
    2605             :         }
    2606        5294 :         ist->saw_first_ts = 1;
    2607             :     }
    2608             : 
    2609      384336 :     if (ist->next_dts == AV_NOPTS_VALUE)
    2610        5707 :         ist->next_dts = ist->dts;
    2611      384336 :     if (ist->next_pts == AV_NOPTS_VALUE)
    2612        5294 :         ist->next_pts = ist->pts;
    2613             : 
    2614      384336 :     if (!pkt) {
    2615             :         /* EOF handling */
    2616        5720 :         av_init_packet(&avpkt);
    2617        5720 :         avpkt.data = NULL;
    2618        5720 :         avpkt.size = 0;
    2619             :     } else {
    2620      378616 :         avpkt = *pkt;
    2621             :     }
    2622             : 
    2623      384336 :     if (pkt && pkt->dts != AV_NOPTS_VALUE) {
    2624      347376 :         ist->next_dts = ist->dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
    2625      347376 :         if (ist->dec_ctx->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
    2626      277392 :             ist->next_pts = ist->pts = ist->dts;
    2627             :     }
    2628             : 
    2629             :     // while we have more to decode or while the decoder did output something on EOF
    2630     1145635 :     while (ist->decoding_needed) {
    2631      739145 :         int64_t duration = 0;
    2632      739145 :         int got_output = 0;
    2633      739145 :         int decode_failed = 0;
    2634             : 
    2635      739145 :         ist->pts = ist->next_pts;
    2636      739145 :         ist->dts = ist->next_dts;
    2637             : 
    2638      739145 :         switch (ist->dec_ctx->codec_type) {
    2639      539173 :         case AVMEDIA_TYPE_AUDIO:
    2640      539173 :             ret = decode_audio    (ist, repeating ? NULL : &avpkt, &got_output,
    2641             :                                    &decode_failed);
    2642      539173 :             break;
    2643      198415 :         case AVMEDIA_TYPE_VIDEO:
    2644      198415 :             ret = decode_video    (ist, repeating ? NULL : &avpkt, &got_output, !pkt,
    2645             :                                    &decode_failed);
    2646      198415 :             if (!repeating || !pkt || got_output) {
    2647      104465 :                 if (pkt && pkt->duration) {
    2648       97562 :                     duration = av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
    2649        6903 :                 } else if(ist->dec_ctx->framerate.num != 0 && ist->dec_ctx->framerate.den != 0) {
    2650        5721 :                     int ticks= av_stream_get_parser(ist->st) ? av_stream_get_parser(ist->st)->repeat_pict+1 : ist->dec_ctx->ticks_per_frame;
    2651       11442 :                     duration = ((int64_t)AV_TIME_BASE *
    2652       17163 :                                     ist->dec_ctx->framerate.den * ticks) /
    2653       11442 :                                     ist->dec_ctx->framerate.num / ist->dec_ctx->ticks_per_frame;
    2654             :                 }
    2655             : 
    2656      104465 :                 if(ist->dts != AV_NOPTS_VALUE && duration) {
    2657      103283 :                     ist->next_dts += duration;
    2658             :                 }else
    2659        1182 :                     ist->next_dts = AV_NOPTS_VALUE;
    2660             :             }
    2661             : 
    2662      198415 :             if (got_output)
    2663       94520 :                 ist->next_pts += duration; //FIXME the duration is not correct in some cases
    2664      198415 :             break;
    2665        1557 :         case AVMEDIA_TYPE_SUBTITLE:
    2666        1557 :             if (repeating)
    2667         593 :                 break;
    2668         964 :             ret = transcode_subtitles(ist, &avpkt, &got_output, &decode_failed);
    2669         964 :             if (!pkt && ret >= 0)
    2670          30 :                 ret = AVERROR_EOF;
    2671         964 :             break;
    2672           0 :         default:
    2673           0 :             return -1;
    2674             :         }
    2675             : 
    2676      739145 :         if (ret == AVERROR_EOF) {
    2677        5122 :             eof_reached = 1;
    2678      367304 :             break;
    2679             :         }
    2680             : 
    2681      734023 :         if (ret < 0) {
    2682         384 :             if (decode_failed) {
    2683         768 :                 av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d: %s\n",
    2684         768 :                        ist->file_index, ist->st->index, av_err2str(ret));
    2685             :             } else {
    2686           0 :                 av_log(NULL, AV_LOG_FATAL, "Error while processing the decoded "
    2687           0 :                        "data for stream #%d:%d\n", ist->file_index, ist->st->index);
    2688             :             }
    2689         384 :             if (!decode_failed || exit_on_error)
    2690           0 :                 exit_program(1);
    2691         384 :             break;
    2692             :         }
    2693             : 
    2694      733639 :         if (got_output)
    2695      377560 :             ist->got_output = 1;
    2696             : 
    2697      733639 :         if (!got_output)
    2698      356079 :             break;
    2699             : 
    2700             :         // During draining, we might get multiple output frames in this loop.
    2701             :         // ffmpeg.c does not drain the filter chain on configuration changes,
    2702             :         // which means if we send multiple frames at once to the filters, and
    2703             :         // one of those frames changes configuration, the buffered frames will
    2704             :         // be lost. This can upset certain FATE tests.
    2705             :         // Decode only 1 frame per call on EOF to appease these FATE tests.
    2706             :         // The ideal solution would be to rewrite decoding to use the new
    2707             :         // decoding API in a better way.
    2708      377560 :         if (!pkt)
    2709         597 :             break;
    2710             : 
    2711      376963 :         repeating = 1;
    2712             :     }
    2713             : 
    2714             :     /* after flushing, send an EOF on all the filter inputs attached to the stream */
    2715             :     /* except when looping we need to flush but not to send an EOF */
    2716      384336 :     if (!pkt && ist->decoding_needed && eof_reached && !no_eof) {
    2717        5122 :         int ret = send_filter_eof(ist);
    2718        5122 :         if (ret < 0) {
    2719           0 :             av_log(NULL, AV_LOG_FATAL, "Error marking filters as finished\n");
    2720           0 :             exit_program(1);
    2721             :         }
    2722             :     }
    2723             : 
    2724             :     /* handle stream copy */
    2725      384336 :     if (!ist->decoding_needed) {
    2726       22154 :         ist->dts = ist->next_dts;
    2727       22154 :         switch (ist->dec_ctx->codec_type) {
    2728       18033 :         case AVMEDIA_TYPE_AUDIO:
    2729       36066 :             ist->next_dts += ((int64_t)AV_TIME_BASE * ist->dec_ctx->frame_size) /
    2730       18033 :                              ist->dec_ctx->sample_rate;
    2731       18033 :             break;
    2732        3601 :         case AVMEDIA_TYPE_VIDEO:
    2733        3601 :             if (ist->framerate.num) {
    2734             :                 // TODO: Remove work-around for c99-to-c89 issue 7
    2735          79 :                 AVRational time_base_q = AV_TIME_BASE_Q;
    2736          79 :                 int64_t next_dts = av_rescale_q(ist->next_dts, time_base_q, av_inv_q(ist->framerate));
    2737          79 :                 ist->next_dts = av_rescale_q(next_dts + 1, av_inv_q(ist->framerate), time_base_q);
    2738        3522 :             } else if (pkt->duration) {
    2739        3295 :                 ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
    2740         227 :             } else if(ist->dec_ctx->framerate.num != 0) {
    2741         119 :                 int ticks= av_stream_get_parser(ist->st) ? av_stream_get_parser(ist->st)->repeat_pict + 1 : ist->dec_ctx->ticks_per_frame;
    2742         357 :                 ist->next_dts += ((int64_t)AV_TIME_BASE *
    2743         357 :                                   ist->dec_ctx->framerate.den * ticks) /
    2744         238 :                                   ist->dec_ctx->framerate.num / ist->dec_ctx->ticks_per_frame;
    2745             :             }
    2746        3601 :             break;
    2747             :         }
    2748       22154 :         ist->pts = ist->dts;
    2749       22154 :         ist->next_pts = ist->next_dts;
    2750             :     }
    2751      775729 :     for (i = 0; pkt && i < nb_output_streams; i++) {
    2752      391393 :         OutputStream *ost = output_streams[i];
    2753             : 
    2754      391393 :         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
    2755      369262 :             continue;
    2756             : 
    2757       22131 :         do_streamcopy(ist, ost, pkt);
    2758             :     }
    2759             : 
    2760      384336 :     return !eof_reached;
    2761             : }
    2762             : 
    2763           0 : static void print_sdp(void)
    2764             : {
    2765             :     char sdp[16384];
    2766             :     int i;
    2767             :     int j;
    2768             :     AVIOContext *sdp_pb;
    2769             :     AVFormatContext **avc;
    2770             : 
    2771           0 :     for (i = 0; i < nb_output_files; i++) {
    2772           0 :         if (!output_files[i]->header_written)
    2773           0 :             return;
    2774             :     }
    2775             : 
    2776           0 :     avc = av_malloc_array(nb_output_files, sizeof(*avc));
    2777           0 :     if (!avc)
    2778           0 :         exit_program(1);
    2779           0 :     for (i = 0, j = 0; i < nb_output_files; i++) {
    2780           0 :         if (!strcmp(output_files[i]->ctx->oformat->name, "rtp")) {
    2781           0 :             avc[j] = output_files[i]->ctx;
    2782           0 :             j++;
    2783             :         }
    2784             :     }
    2785             : 
    2786           0 :     if (!j)
    2787           0 :         goto fail;
    2788             : 
    2789           0 :     av_sdp_create(avc, j, sdp, sizeof(sdp));
    2790             : 
    2791           0 :     if (!sdp_filename) {
    2792           0 :         printf("SDP:\n%s\n", sdp);
    2793           0 :         fflush(stdout);
    2794             :     } else {
    2795           0 :         if (avio_open2(&sdp_pb, sdp_filename, AVIO_FLAG_WRITE, &int_cb, NULL) < 0) {
    2796           0 :             av_log(NULL, AV_LOG_ERROR, "Failed to open sdp file '%s'\n", sdp_filename);
    2797             :         } else {
    2798           0 :             avio_printf(sdp_pb, "SDP:\n%s", sdp);
    2799           0 :             avio_closep(&sdp_pb);
    2800           0 :             av_freep(&sdp_filename);
    2801             :         }
    2802             :     }
    2803             : 
    2804           0 : fail:
    2805           0 :     av_freep(&avc);
    2806             : }
    2807             : 
    2808           0 : static const HWAccel *get_hwaccel(enum AVPixelFormat pix_fmt)
    2809             : {
    2810             :     int i;
    2811           0 :     for (i = 0; hwaccels[i].name; i++)
    2812           0 :         if (hwaccels[i].pix_fmt == pix_fmt)
    2813           0 :             return &hwaccels[i];
    2814           0 :     return NULL;
    2815             : }
    2816             : 
    2817         826 : static enum AVPixelFormat get_format(AVCodecContext *s, const enum AVPixelFormat *pix_fmts)
    2818             : {
    2819         826 :     InputStream *ist = s->opaque;
    2820             :     const enum AVPixelFormat *p;
    2821             :     int ret;
    2822             : 
    2823         826 :     for (p = pix_fmts; *p != -1; p++) {
    2824         826 :         const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(*p);
    2825             :         const HWAccel *hwaccel;
    2826             : 
    2827         826 :         if (!(desc->flags & AV_PIX_FMT_FLAG_HWACCEL))
    2828         826 :             break;
    2829             : 
    2830           0 :         hwaccel = get_hwaccel(*p);
    2831           0 :         if (!hwaccel ||
    2832           0 :             (ist->active_hwaccel_id && ist->active_hwaccel_id != hwaccel->id) ||
    2833           0 :             (ist->hwaccel_id != HWACCEL_AUTO && ist->hwaccel_id != hwaccel->id))
    2834           0 :             continue;
    2835             : 
    2836           0 :         ret = hwaccel->init(s);
    2837           0 :         if (ret < 0) {
    2838           0 :             if (ist->hwaccel_id == hwaccel->id) {
    2839           0 :                 av_log(NULL, AV_LOG_FATAL,
    2840             :                        "%s hwaccel requested for input stream #%d:%d, "
    2841             :                        "but cannot be initialized.\n", hwaccel->name,
    2842           0 :                        ist->file_index, ist->st->index);
    2843           0 :                 return AV_PIX_FMT_NONE;
    2844             :             }
    2845           0 :             continue;
    2846             :         }
    2847             : 
    2848           0 :         if (ist->hw_frames_ctx) {
    2849           0 :             s->hw_frames_ctx = av_buffer_ref(ist->hw_frames_ctx);
    2850           0 :             if (!s->hw_frames_ctx)
    2851           0 :                 return AV_PIX_FMT_NONE;
    2852             :         }
    2853             : 
    2854           0 :         ist->active_hwaccel_id = hwaccel->id;
    2855           0 :         ist->hwaccel_pix_fmt   = *p;
    2856           0 :         break;
    2857             :     }
    2858             : 
    2859         826 :     return *p;
    2860             : }
    2861             : 
    2862      353113 : static int get_buffer(AVCodecContext *s, AVFrame *frame, int flags)
    2863             : {
    2864      353113 :     InputStream *ist = s->opaque;
    2865             : 
    2866      353113 :     if (ist->hwaccel_get_buffer && frame->format == ist->hwaccel_pix_fmt)
    2867           0 :         return ist->hwaccel_get_buffer(s, frame, flags);
    2868             : 
    2869      353113 :     return avcodec_default_get_buffer2(s, frame, flags);
    2870             : }
    2871             : 
    2872        5534 : static int init_input_stream(int ist_index, char *error, int error_len)
    2873             : {
    2874             :     int ret;
    2875        5534 :     InputStream *ist = input_streams[ist_index];
    2876             : 
    2877        5534 :     if (ist->decoding_needed) {
    2878        5133 :         AVCodec *codec = ist->dec;
    2879        5133 :         if (!codec) {
    2880           0 :             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
    2881           0 :                     avcodec_get_name(ist->dec_ctx->codec_id), ist->file_index, ist->st->index);
    2882           0 :             return AVERROR(EINVAL);
    2883             :         }
    2884             : 
    2885        5133 :         ist->dec_ctx->opaque                = ist;
    2886        5133 :         ist->dec_ctx->get_format            = get_format;
    2887        5133 :         ist->dec_ctx->get_buffer2           = get_buffer;
    2888        5133 :         ist->dec_ctx->thread_safe_callbacks = 1;
    2889             : 
    2890        5133 :         av_opt_set_int(ist->dec_ctx, "refcounted_frames", 1, 0);
    2891        5133 :         if (ist->dec_ctx->codec_id == AV_CODEC_ID_DVB_SUBTITLE &&
    2892           0 :            (ist->decoding_needed & DECODING_FOR_OST)) {
    2893           0 :             av_dict_set(&ist->decoder_opts, "compute_edt", "1", AV_DICT_DONT_OVERWRITE);
    2894           0 :             if (ist->decoding_needed & DECODING_FOR_FILTER)
    2895           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");
    2896             :         }
    2897             : 
    2898        5133 :         av_dict_set(&ist->decoder_opts, "sub_text_format", "ass", AV_DICT_DONT_OVERWRITE);
    2899             : 
    2900             :         /* Useful for subtitles retiming by lavf (FIXME), skipping samples in
    2901             :          * audio, and video decoders such as cuvid or mediacodec */
    2902        5133 :         av_codec_set_pkt_timebase(ist->dec_ctx, ist->st->time_base);
    2903             : 
    2904        5133 :         if (!av_dict_get(ist->decoder_opts, "threads", NULL, 0))
    2905          37 :             av_dict_set(&ist->decoder_opts, "threads", "auto", 0);
    2906             : 
    2907        5133 :         ret = hw_device_setup_for_decode(ist);
    2908        5133 :         if (ret < 0) {
    2909           0 :             snprintf(error, error_len, "Device setup failed for "
    2910             :                      "decoder on input stream #%d:%d : %s",
    2911           0 :                      ist->file_index, ist->st->index, av_err2str(ret));
    2912           0 :             return ret;
    2913             :         }
    2914             : 
    2915        5133 :         if ((ret = avcodec_open2(ist->dec_ctx, codec, &ist->decoder_opts)) < 0) {
    2916           0 :             if (ret == AVERROR_EXPERIMENTAL)
    2917           0 :                 abort_codec_experimental(codec, 0);
    2918             : 
    2919           0 :             snprintf(error, error_len,
    2920             :                      "Error while opening decoder for input stream "
    2921             :                      "#%d:%d : %s",
    2922           0 :                      ist->file_index, ist->st->index, av_err2str(ret));
    2923           0 :             return ret;
    2924             :         }
    2925        5133 :         assert_avoptions(ist->decoder_opts);
    2926             :     }
    2927             : 
    2928        5534 :     ist->next_pts = AV_NOPTS_VALUE;
    2929        5534 :     ist->next_dts = AV_NOPTS_VALUE;
    2930             : 
    2931        5534 :     return 0;
    2932             : }
    2933             : 
    2934       15530 : static InputStream *get_input_stream(OutputStream *ost)
    2935             : {
    2936       15530 :     if (ost->source_index >= 0)
    2937       15437 :         return input_streams[ost->source_index];
    2938          93 :     return NULL;
    2939             : }
    2940             : 
    2941           1 : static int compare_int64(const void *a, const void *b)
    2942             : {
    2943           1 :     return FFDIFFSIGN(*(const int64_t *)a, *(const int64_t *)b);
    2944             : }
    2945             : 
    2946             : /* open the muxer when all the streams are initialized */
    2947        5309 : static int check_init_output_file(OutputFile *of, int file_index)
    2948             : {
    2949             :     int ret, i;
    2950             : 
    2951       10725 :     for (i = 0; i < of->ctx->nb_streams; i++) {
    2952        5549 :         OutputStream *ost = output_streams[of->ost_index + i];
    2953        5549 :         if (!ost->initialized)
    2954         133 :             return 0;
    2955             :     }
    2956             : 
    2957        5176 :     of->ctx->interrupt_callback = int_cb;
    2958             : 
    2959        5176 :     ret = avformat_write_header(of->ctx, &of->opts);
    2960        5176 :     if (ret < 0) {
    2961           0 :         av_log(NULL, AV_LOG_ERROR,
    2962             :                "Could not write header for output file #%d "
    2963             :                "(incorrect codec parameters ?): %s\n",
    2964           0 :                file_index, av_err2str(ret));
    2965           0 :         return ret;
    2966             :     }
    2967             :     //assert_avoptions(of->opts);
    2968        5176 :     of->header_written = 1;
    2969             : 
    2970        5176 :     av_dump_format(of->ctx, file_index, of->ctx->filename, 1);
    2971             : 
    2972        5176 :     if (sdp_filename || want_sdp)
    2973           0 :         print_sdp();
    2974             : 
    2975             :     /* flush the muxing queues */
    2976       10484 :     for (i = 0; i < of->ctx->nb_streams; i++) {
    2977        5308 :         OutputStream *ost = output_streams[of->ost_index + i];
    2978             : 
    2979             :         /* try to improve muxing time_base (only possible if nothing has been written yet) */
    2980        5308 :         if (!av_fifo_size(ost->muxing_queue))
    2981        5306 :             ost->mux_timebase = ost->st->time_base;
    2982             : 
    2983       10642 :         while (av_fifo_size(ost->muxing_queue)) {
    2984             :             AVPacket pkt;
    2985          26 :             av_fifo_generic_read(ost->muxing_queue, &pkt, sizeof(pkt), NULL);
    2986          26 :             write_packet(of, &pkt, ost, 1);
    2987             :         }
    2988             :     }
    2989             : 
    2990        5176 :     return 0;
    2991             : }
    2992             : 
    2993        5308 : static int init_output_bsfs(OutputStream *ost)
    2994             : {
    2995             :     AVBSFContext *ctx;
    2996             :     int i, ret;
    2997             : 
    2998        5308 :     if (!ost->nb_bitstream_filters)
    2999        5301 :         return 0;
    3000             : 
    3001          14 :     for (i = 0; i < ost->nb_bitstream_filters; i++) {
    3002           7 :         ctx = ost->bsf_ctx[i];
    3003             : 
    3004          14 :         ret = avcodec_parameters_copy(ctx->par_in,
    3005           7 :                                       i ? ost->bsf_ctx[i - 1]->par_out : ost->st->codecpar);
    3006           7 :         if (ret < 0)
    3007           0 :             return ret;
    3008             : 
    3009           7 :         ctx->time_base_in = i ? ost->bsf_ctx[i - 1]->time_base_out : ost->st->time_base;
    3010             : 
    3011           7 :         ret = av_bsf_init(ctx);
    3012           7 :         if (ret < 0) {
    3013           0 :             av_log(NULL, AV_LOG_ERROR, "Error initializing bitstream filter: %s\n",
    3014           0 :                    ost->bsf_ctx[i]->filter->name);
    3015           0 :             return ret;
    3016             :         }
    3017             :     }
    3018             : 
    3019           7 :     ctx = ost->bsf_ctx[ost->nb_bitstream_filters - 1];
    3020           7 :     ret = avcodec_parameters_copy(ost->st->codecpar, ctx->par_out);
    3021           7 :     if (ret < 0)
    3022           0 :         return ret;
    3023             : 
    3024           7 :     ost->st->time_base = ctx->time_base_out;
    3025             : 
    3026           7 :     return 0;
    3027             : }
    3028             : 
    3029         181 : static int init_output_stream_streamcopy(OutputStream *ost)
    3030             : {
    3031         181 :     OutputFile *of = output_files[ost->file_index];
    3032         181 :     InputStream *ist = get_input_stream(ost);
    3033         181 :     AVCodecParameters *par_dst = ost->st->codecpar;
    3034         181 :     AVCodecParameters *par_src = ost->ref_par;
    3035             :     AVRational sar;
    3036             :     int i, ret;
    3037         181 :     uint32_t codec_tag = par_dst->codec_tag;
    3038             : 
    3039         181 :     av_assert0(ist && !ost->filter);
    3040             : 
    3041         181 :     ret = avcodec_parameters_to_context(ost->enc_ctx, ist->st->codecpar);
    3042         181 :     if (ret >= 0)
    3043         181 :         ret = av_opt_set_dict(ost->enc_ctx, &ost->encoder_opts);
    3044         181 :     if (ret < 0) {
    3045           0 :         av_log(NULL, AV_LOG_FATAL,
    3046             :                "Error setting up codec context options.\n");
    3047           0 :         return ret;
    3048             :     }
    3049         181 :     avcodec_parameters_from_context(par_src, ost->enc_ctx);
    3050             : 
    3051         181 :     if (!codec_tag) {
    3052             :         unsigned int codec_tag_tmp;
    3053         206 :         if (!of->ctx->oformat->codec_tag ||
    3054          37 :             av_codec_get_id (of->ctx->oformat->codec_tag, par_src->codec_tag) == par_src->codec_id ||
    3055          12 :             !av_codec_get_tag2(of->ctx->oformat->codec_tag, par_src->codec_id, &codec_tag_tmp))
    3056         172 :             codec_tag = par_src->codec_tag;
    3057             :     }
    3058             : 
    3059         181 :     ret = avcodec_parameters_copy(par_dst, par_src);
    3060         181 :     if (ret < 0)
    3061           0 :         return ret;
    3062             : 
    3063         181 :     par_dst->codec_tag = codec_tag;
    3064             : 
    3065         181 :     if (!ost->frame_rate.num)
    3066         180 :         ost->frame_rate = ist->framerate;
    3067         181 :     ost->st->avg_frame_rate = ost->frame_rate;
    3068             : 
    3069         181 :     ret = avformat_transfer_internal_stream_timing_info(of->ctx->oformat, ost->st, ist->st, copy_tb);
    3070         181 :     if (ret < 0)
    3071           0 :         return ret;
    3072             : 
    3073             :     // copy timebase while removing common factors
    3074         181 :     if (ost->st->time_base.num <= 0 || ost->st->time_base.den <= 0)
    3075         180 :         ost->st->time_base = av_add_q(av_stream_get_codec_timebase(ost->st), (AVRational){0, 1});
    3076             : 
    3077             :     // copy estimated duration as a hint to the muxer
    3078         181 :     if (ost->st->duration <= 0 && ist->st->duration > 0)
    3079         124 :         ost->st->duration = av_rescale_q(ist->st->duration, ist->st->time_base, ost->st->time_base);
    3080             : 
    3081             :     // copy disposition
    3082         181 :     ost->st->disposition = ist->st->disposition;
    3083             : 
    3084         181 :     if (ist->st->nb_side_data) {
    3085           8 :         for (i = 0; i < ist->st->nb_side_data; i++) {
    3086           4 :             const AVPacketSideData *sd_src = &ist->st->side_data[i];
    3087             :             uint8_t *dst_data;
    3088             : 
    3089           4 :             dst_data = av_stream_new_side_data(ost->st, sd_src->type, sd_src->size);
    3090           4 :             if (!dst_data)
    3091           0 :                 return AVERROR(ENOMEM);
    3092           4 :             memcpy(dst_data, sd_src->data, sd_src->size);
    3093             :         }
    3094             :     }
    3095             : 
    3096         181 :     if (ost->rotate_overridden) {
    3097           1 :         uint8_t *sd = av_stream_new_side_data(ost->st, AV_PKT_DATA_DISPLAYMATRIX,
    3098             :                                               sizeof(int32_t) * 9);
    3099           1 :         if (sd)
    3100           1 :             av_display_rotation_set((int32_t *)sd, -ost->rotate_override_value);
    3101             :     }
    3102             : 
    3103         181 :     ost->parser = av_parser_init(par_dst->codec_id);
    3104         181 :     ost->parser_avctx = avcodec_alloc_context3(NULL);
    3105         181 :     if (!ost->parser_avctx)
    3106           0 :         return AVERROR(ENOMEM);
    3107             : 
    3108         181 :     switch (par_dst->codec_type) {
    3109          88 :     case AVMEDIA_TYPE_AUDIO:
    3110          88 :         if (audio_volume != 256) {
    3111           0 :             av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
    3112           0 :             exit_program(1);
    3113             :         }
    3114          88 :         if((par_dst->block_align == 1 || par_dst->block_align == 1152 || par_dst->block_align == 576) && par_dst->codec_id == AV_CODEC_ID_MP3)
    3115           0 :             par_dst->block_align= 0;
    3116          88 :         if(par_dst->codec_id == AV_CODEC_ID_AC3)
    3117           2 :             par_dst->block_align= 0;
    3118          88 :         break;
    3119          78 :     case AVMEDIA_TYPE_VIDEO:
    3120          78 :         if (ost->frame_aspect_ratio.num) { // overridden by the -aspect cli option
    3121           0 :             sar =
    3122             :                 av_mul_q(ost->frame_aspect_ratio,
    3123           0 :                          (AVRational){ par_dst->height, par_dst->width });
    3124           0 :             av_log(NULL, AV_LOG_WARNING, "Overriding aspect ratio "
    3125             :                    "with stream copy may produce invalid files\n");
    3126             :             }
    3127          78 :         else if (ist->st->sample_aspect_ratio.num)
    3128          27 :             sar = ist->st->sample_aspect_ratio;
    3129             :         else
    3130          51 :             sar = par_src->sample_aspect_ratio;
    3131          78 :         ost->st->sample_aspect_ratio = par_dst->sample_aspect_ratio = sar;
    3132          78 :         ost->st->avg_frame_rate = ist->st->avg_frame_rate;
    3133          78 :         ost->st->r_frame_rate = ist->st->r_frame_rate;
    3134          78 :         break;
    3135             :     }
    3136             : 
    3137         181 :     ost->mux_timebase = ist->st->time_base;
    3138             : 
    3139         181 :     return 0;
    3140             : }
    3141             : 
    3142        5126 : static void set_encoder_id(OutputFile *of, OutputStream *ost)
    3143             : {
    3144             :     AVDictionaryEntry *e;
    3145             : 
    3146             :     uint8_t *encoder_string;
    3147             :     int encoder_string_len;
    3148        5126 :     int format_flags = 0;
    3149        5126 :     int codec_flags = 0;
    3150             : 
    3151        5126 :     if (av_dict_get(ost->st->metadata, "encoder",  NULL, 0))
    3152           0 :         return;
    3153             : 
    3154        5126 :     e = av_dict_get(of->opts, "fflags", NULL, 0);
    3155        5126 :     if (e) {
    3156        4332 :         const AVOption *o = av_opt_find(of->ctx, "fflags", NULL, 0, 0);
    3157        4332 :         if (!o)
    3158           0 :             return;
    3159        4332 :         av_opt_eval_flags(of->ctx, o, e->value, &format_flags);
    3160             :     }
    3161        5126 :     e = av_dict_get(ost->encoder_opts, "flags", NULL, 0);
    3162        5126 :     if (e) {
    3163        4292 :         const AVOption *o = av_opt_find(ost->enc_ctx, "flags", NULL, 0, 0);
    3164        4292 :         if (!o)
    3165           0 :             return;
    3166        4292 :         av_opt_eval_flags(ost->enc_ctx, o, e->value, &codec_flags);
    3167             :     }
    3168             : 
    3169        5126 :     encoder_string_len = sizeof(LIBAVCODEC_IDENT) + strlen(ost->enc->name) + 2;
    3170        5126 :     encoder_string     = av_mallocz(encoder_string_len);
    3171        5126 :     if (!encoder_string)
    3172           0 :         exit_program(1);
    3173             : 
    3174        5126 :     if (!(format_flags & AVFMT_FLAG_BITEXACT) && !(codec_flags & AV_CODEC_FLAG_BITEXACT))
    3175         786 :         av_strlcpy(encoder_string, LIBAVCODEC_IDENT " ", encoder_string_len);
    3176             :     else
    3177        4340 :         av_strlcpy(encoder_string, "Lavc ", encoder_string_len);
    3178        5126 :     av_strlcat(encoder_string, ost->enc->name, encoder_string_len);
    3179        5126 :     av_dict_set(&ost->st->metadata, "encoder",  encoder_string,
    3180             :                 AV_DICT_DONT_STRDUP_VAL | AV_DICT_DONT_OVERWRITE);
    3181             : }
    3182             : 
    3183           1 : static void parse_forced_key_frames(char *kf, OutputStream *ost,
    3184             :                                     AVCodecContext *avctx)
    3185             : {
    3186             :     char *p;
    3187           1 :     int n = 1, i, size, index = 0;
    3188             :     int64_t t, *pts;
    3189             : 
    3190          14 :     for (p = kf; *p; p++)
    3191          13 :         if (*p == ',')
    3192           1 :             n++;
    3193           1 :     size = n;
    3194           1 :     pts = av_malloc_array(size, sizeof(*pts));
    3195           1 :     if (!pts) {
    3196           0 :         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
    3197           0 :         exit_program(1);
    3198             :     }
    3199             : 
    3200           1 :     p = kf;
    3201           3 :     for (i = 0; i < n; i++) {
    3202           2 :         char *next = strchr(p, ',');
    3203             : 
    3204           2 :         if (next)
    3205           1 :             *next++ = 0;
    3206             : 
    3207           2 :         if (!memcmp(p, "chapters", 8)) {
    3208             : 
    3209           0 :             AVFormatContext *avf = output_files[ost->file_index]->ctx;
    3210             :             int j;
    3211             : 
    3212           0 :             if (avf->nb_chapters > INT_MAX - size ||
    3213           0 :                 !(pts = av_realloc_f(pts, size += avf->nb_chapters - 1,
    3214             :                                      sizeof(*pts)))) {
    3215           0 :                 av_log(NULL, AV_LOG_FATAL,
    3216             :                        "Could not allocate forced key frames array.\n");
    3217           0 :                 exit_program(1);
    3218             :             }
    3219           0 :             t = p[8] ? parse_time_or_die("force_key_frames", p + 8, 1) : 0;
    3220           0 :             t = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
    3221             : 
    3222           0 :             for (j = 0; j < avf->nb_chapters; j++) {
    3223           0 :                 AVChapter *c = avf->chapters[j];
    3224             :                 av_assert1(index < size);
    3225           0 :                 pts[index++] = av_rescale_q(c->start, c->time_base,
    3226           0 :                                             avctx->time_base) + t;
    3227             :             }
    3228             : 
    3229             :         } else {
    3230             : 
    3231           2 :             t = parse_time_or_die("force_key_frames", p, 1);
    3232             :             av_assert1(index < size);
    3233           2 :             pts[index++] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
    3234             : 
    3235             :         }
    3236             : 
    3237           2 :         p = next;
    3238             :     }
    3239             : 
    3240           1 :     av_assert0(index == size);
    3241           1 :     qsort(pts, size, sizeof(*pts), compare_int64);
    3242           1 :     ost->forced_kf_count = size;
    3243           1 :     ost->forced_kf_pts   = pts;
    3244           1 : }
    3245             : 
    3246        5097 : static void init_encoder_time_base(OutputStream *ost, AVRational default_time_base)
    3247             : {
    3248        5097 :     InputStream *ist = get_input_stream(ost);
    3249        5097 :     AVCodecContext *enc_ctx = ost->enc_ctx;
    3250             :     AVFormatContext *oc;
    3251             : 
    3252        5097 :     if (ost->enc_timebase.num > 0) {
    3253           0 :         enc_ctx->time_base = ost->enc_timebase;
    3254           0 :         return;
    3255             :     }
    3256             : 
    3257        5097 :     if (ost->enc_timebase.num < 0) {
    3258           0 :         if (ist) {
    3259           0 :             enc_ctx->time_base = ist->st->time_base;
    3260           0 :             return;
    3261             :         }
    3262             : 
    3263           0 :         oc = output_files[ost->file_index]->ctx;
    3264           0 :         av_log(oc, AV_LOG_WARNING, "Input stream data not available, using default time base\n");
    3265             :     }
    3266             : 
    3267        5097 :     enc_ctx->time_base = default_time_base;
    3268             : }
    3269             : 
    3270        5126 : static int init_output_stream_encode(OutputStream *ost)
    3271             : {
    3272        5126 :     InputStream *ist = get_input_stream(ost);
    3273        5126 :     AVCodecContext *enc_ctx = ost->enc_ctx;
    3274        5126 :     AVCodecContext *dec_ctx = NULL;
    3275        5126 :     AVFormatContext *oc = output_files[ost->file_index]->ctx;
    3276             :     int j, ret;
    3277             : 
    3278        5126 :     set_encoder_id(output_files[ost->file_index], ost);
    3279             : 
    3280             :     // Muxers use AV_PKT_DATA_DISPLAYMATRIX to signal rotation. On the other
    3281             :     // hand, the legacy API makes demuxers set "rotate" metadata entries,
    3282             :     // which have to be filtered out to prevent leaking them to output files.
    3283        5126 :     av_dict_set(&ost->st->metadata, "rotate", NULL, 0);
    3284             : 
    3285        5126 :     if (ist) {
    3286        5095 :         ost->st->disposition          = ist->st->disposition;
    3287             : 
    3288        5095 :         dec_ctx = ist->dec_ctx;
    3289             : 
    3290        5095 :         enc_ctx->chroma_sample_location = dec_ctx->chroma_sample_location;
    3291             :     } else {
    3292          66 :         for (j = 0; j < oc->nb_streams; j++) {
    3293          35 :             AVStream *st = oc->streams[j];
    3294          35 :             if (st != ost->st && st->codecpar->codec_type == ost->st->codecpar->codec_type)
    3295           0 :                 break;
    3296             :         }
    3297          31 :         if (j == oc->nb_streams)
    3298          55 :             if (ost->st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO ||
    3299          24 :                 ost->st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
    3300          31 :                 ost->st->disposition = AV_DISPOSITION_DEFAULT;
    3301             :     }
    3302             : 
    3303        5126 :     if (enc_ctx->codec_type == AVMEDIA_TYPE_VIDEO) {
    3304        4044 :         if (!ost->frame_rate.num)
    3305        4027 :             ost->frame_rate = av_buffersink_get_frame_rate(ost->filter->filter);
    3306        4044 :         if (ist && !ost->frame_rate.num)
    3307           0 :             ost->frame_rate = ist->framerate;
    3308        4044 :         if (ist && !ost->frame_rate.num)
    3309           0 :             ost->frame_rate = ist->st->r_frame_rate;
    3310        4044 :         if (ist && !ost->frame_rate.num) {
    3311           0 :             ost->frame_rate = (AVRational){25, 1};
    3312           0 :             av_log(NULL, AV_LOG_WARNING,
    3313             :                    "No information "
    3314             :                    "about the input framerate is available. Falling "
    3315             :                    "back to a default value of 25fps for output stream #%d:%d. Use the -r option "
    3316             :                    "if you want a different framerate.\n",
    3317             :                    ost->file_index, ost->index);
    3318             :         }
    3319             : //      ost->frame_rate = ist->st->avg_frame_rate.num ? ist->st->avg_frame_rate : (AVRational){25, 1};
    3320        4044 :         if (ost->enc->supported_framerates && !ost->force_fps) {
    3321          49 :             int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
    3322          49 :             ost->frame_rate = ost->enc->supported_framerates[idx];
    3323             :         }
    3324             :         // reduce frame rate for mpeg4 to be within the spec limits
    3325        4044 :         if (enc_ctx->codec_id == AV_CODEC_ID_MPEG4) {
    3326         116 :             av_reduce(&ost->frame_rate.num, &ost->frame_rate.den,
    3327         116 :                       ost->frame_rate.num, ost->frame_rate.den, 65535);
    3328             :         }
    3329             :     }
    3330             : 
    3331        5126 :     switch (enc_ctx->codec_type) {
    3332        1053 :     case AVMEDIA_TYPE_AUDIO:
    3333        1053 :         enc_ctx->sample_fmt     = av_buffersink_get_format(ost->filter->filter);
    3334        1053 :         if (dec_ctx)
    3335        1046 :             enc_ctx->bits_per_raw_sample = FFMIN(dec_ctx->bits_per_raw_sample,
    3336             :                                                  av_get_bytes_per_sample(enc_ctx->sample_fmt) << 3);
    3337        1053 :         enc_ctx->sample_rate    = av_buffersink_get_sample_rate(ost->filter->filter);
    3338        1053 :         enc_ctx->channel_layout = av_buffersink_get_channel_layout(ost->filter->filter);
    3339        1053 :         enc_ctx->channels       = av_buffersink_get_channels(ost->filter->filter);
    3340             : 
    3341        1053 :         init_encoder_time_base(ost, av_make_q(1, enc_ctx->sample_rate));
    3342        1053 :         break;
    3343             : 
    3344        4044 :     case AVMEDIA_TYPE_VIDEO:
    3345        4044 :         init_encoder_time_base(ost, av_inv_q(ost->frame_rate));
    3346             : 
    3347        4044 :         if (!(enc_ctx->time_base.num && enc_ctx->time_base.den))
    3348           0 :             enc_ctx->time_base = av_buffersink_get_time_base(ost->filter->filter);
    3349        4044 :         if (   av_q2d(enc_ctx->time_base) < 0.001 && video_sync_method != VSYNC_PASSTHROUGH
    3350           2 :            && (video_sync_method == VSYNC_CFR || video_sync_method == VSYNC_VSCFR || (video_sync_method == VSYNC_AUTO && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
    3351           0 :             av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not efficiently supporting it.\n"
    3352             :                                        "Please consider specifying a lower framerate, a different muxer or -vsync 2\n");
    3353             :         }
    3354        4044 :         for (j = 0; j < ost->forced_kf_count; j++)
    3355           0 :             ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
    3356           0 :                                                  AV_TIME_BASE_Q,
    3357             :                                                  enc_ctx->time_base);
    3358             : 
    3359        4044 :         enc_ctx->width  = av_buffersink_get_w(ost->filter->filter);
    3360        4044 :         enc_ctx->height = av_buffersink_get_h(ost->filter->filter);
    3361        8088 :         enc_ctx->sample_aspect_ratio = ost->st->sample_aspect_ratio =
    3362        4044 :             ost->frame_aspect_ratio.num ? // overridden by the -aspect cli option
    3363        8088 :             av_mul_q(ost->frame_aspect_ratio, (AVRational){ enc_ctx->height, enc_ctx->width }) :
    3364        4044 :             av_buffersink_get_sample_aspect_ratio(ost->filter->filter);
    3365             : 
    3366        4044 :         enc_ctx->pix_fmt = av_buffersink_get_format(ost->filter->filter);
    3367        4044 :         if (dec_ctx)
    3368        4020 :             enc_ctx->bits_per_raw_sample = FFMIN(dec_ctx->bits_per_raw_sample,
    3369             :                                                  av_pix_fmt_desc_get(enc_ctx->pix_fmt)->comp[0].depth);
    3370             : 
    3371        4044 :         enc_ctx->framerate = ost->frame_rate;
    3372             : 
    3373        4044 :         ost->st->avg_frame_rate = ost->frame_rate;
    3374             : 
    3375        8064 :         if (!dec_ctx ||
    3376        7463 :             enc_ctx->width   != dec_ctx->width  ||
    3377        6710 :             enc_ctx->height  != dec_ctx->height ||
    3378        3267 :             enc_ctx->pix_fmt != dec_ctx->pix_fmt) {
    3379        2532 :             enc_ctx->bits_per_raw_sample = frame_bits_per_raw_sample;
    3380             :         }
    3381             : 
    3382        4044 :         if (ost->forced_keyframes) {
    3383           1 :             if (!strncmp(ost->forced_keyframes, "expr:", 5)) {
    3384           0 :                 ret = av_expr_parse(&ost->forced_keyframes_pexpr, ost->forced_keyframes+5,
    3385             :                                     forced_keyframes_const_names, NULL, NULL, NULL, NULL, 0, NULL);
    3386           0 :                 if (ret < 0) {
    3387           0 :                     av_log(NULL, AV_LOG_ERROR,
    3388           0 :                            "Invalid force_key_frames expression '%s'\n", ost->forced_keyframes+5);
    3389           0 :                     return ret;
    3390             :                 }
    3391           0 :                 ost->forced_keyframes_expr_const_values[FKF_N] = 0;
    3392           0 :                 ost->forced_keyframes_expr_const_values[FKF_N_FORCED] = 0;
    3393           0 :                 ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N] = NAN;
    3394           0 :                 ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T] = NAN;
    3395             : 
    3396             :             // Don't parse the 'forced_keyframes' in case of 'keep-source-keyframes',
    3397             :             // parse it only for static kf timings
    3398           1 :             } else if(strncmp(ost->forced_keyframes, "source", 6)) {
    3399           1 :                 parse_forced_key_frames(ost->forced_keyframes, ost, ost->enc_ctx);
    3400             :             }
    3401             :         }
    3402        4044 :         break;
    3403          29 :     case AVMEDIA_TYPE_SUBTITLE:
    3404          29 :         enc_ctx->time_base = AV_TIME_BASE_Q;
    3405          29 :         if (!enc_ctx->width) {
    3406          29 :             enc_ctx->width     = input_streams[ost->source_index]->st->codecpar->width;
    3407          29 :             enc_ctx->height    = input_streams[ost->source_index]->st->codecpar->height;
    3408             :         }
    3409          29 :         break;
    3410           0 :     case AVMEDIA_TYPE_DATA:
    3411           0 :         break;
    3412           0 :     default:
    3413           0 :         abort();
    3414             :         break;
    3415             :     }
    3416             : 
    3417        5126 :     ost->mux_timebase = enc_ctx->time_base;
    3418             : 
    3419        5126 :     return 0;
    3420             : }
    3421             : 
    3422        5308 : static int init_output_stream(OutputStream *ost, char *error, int error_len)
    3423             : {
    3424        5308 :     int ret = 0;
    3425             : 
    3426        5308 :     if (ost->encoding_needed) {
    3427        5126 :         AVCodec      *codec = ost->enc;
    3428        5126 :         AVCodecContext *dec = NULL;
    3429             :         InputStream *ist;
    3430             : 
    3431        5126 :         ret = init_output_stream_encode(ost);
    3432        5126 :         if (ret < 0)
    3433           0 :             return ret;
    3434             : 
    3435        5126 :         if ((ist = get_input_stream(ost)))
    3436        5095 :             dec = ist->dec_ctx;
    3437        5126 :         if (dec && dec->subtitle_header) {
    3438             :             /* ASS code assumes this buffer is null terminated so add extra byte. */
    3439          28 :             ost->enc_ctx->subtitle_header = av_mallocz(dec->subtitle_header_size + 1);
    3440          28 :             if (!ost->enc_ctx->subtitle_header)
    3441           0 :                 return AVERROR(ENOMEM);
    3442          28 :             memcpy(ost->enc_ctx->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
    3443          28 :             ost->enc_ctx->subtitle_header_size = dec->subtitle_header_size;
    3444             :         }
    3445        5126 :         if (!av_dict_get(ost->encoder_opts, "threads", NULL, 0))
    3446        2307 :             av_dict_set(&ost->encoder_opts, "threads", "auto", 0);
    3447        6179 :         if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
    3448        2067 :             !codec->defaults &&
    3449        1965 :             !av_dict_get(ost->encoder_opts, "b", NULL, 0) &&
    3450         951 :             !av_dict_get(ost->encoder_opts, "ab", NULL, 0))
    3451         951 :             av_dict_set(&ost->encoder_opts, "b", "128000", 0);
    3452             : 
    3453        5126 :         if (ost->filter && av_buffersink_get_hw_frames_ctx(ost->filter->filter) &&
    3454           0 :             ((AVHWFramesContext*)av_buffersink_get_hw_frames_ctx(ost->filter->filter)->data)->format ==
    3455           0 :             av_buffersink_get_format(ost->filter->filter)) {
    3456           0 :             ost->enc_ctx->hw_frames_ctx = av_buffer_ref(av_buffersink_get_hw_frames_ctx(ost->filter->filter));
    3457           0 :             if (!ost->enc_ctx->hw_frames_ctx)
    3458           0 :                 return AVERROR(ENOMEM);
    3459             :         } else {
    3460        5126 :             ret = hw_device_setup_for_encode(ost);
    3461        5126 :             if (ret < 0) {
    3462           0 :                 snprintf(error, error_len, "Device setup failed for "
    3463             :                          "encoder on output stream #%d:%d : %s",
    3464           0 :                      ost->file_index, ost->index, av_err2str(ret));
    3465           0 :                 return ret;
    3466             :             }
    3467             :         }
    3468             : 
    3469        5126 :         if ((ret = avcodec_open2(ost->enc_ctx, codec, &ost->encoder_opts)) < 0) {
    3470           0 :             if (ret == AVERROR_EXPERIMENTAL)
    3471           0 :                 abort_codec_experimental(codec, 1);
    3472           0 :             snprintf(error, error_len,
    3473             :                      "Error while opening encoder for output stream #%d:%d - "
    3474             :                      "maybe incorrect parameters such as bit_rate, rate, width or height",
    3475             :                     ost->file_index, ost->index);
    3476           0 :             return ret;
    3477             :         }
    3478        6179 :         if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
    3479        1053 :             !(ost->enc->capabilities & AV_CODEC_CAP_VARIABLE_FRAME_SIZE))
    3480          86 :             av_buffersink_set_frame_size(ost->filter->filter,
    3481          86 :                                             ost->enc_ctx->frame_size);
    3482        5126 :         assert_avoptions(ost->encoder_opts);
    3483        5126 :         if (ost->enc_ctx->bit_rate && ost->enc_ctx->bit_rate < 1000)
    3484           0 :             av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
    3485             :                                          " It takes bits/s as argument, not kbits/s\n");
    3486             : 
    3487        5126 :         ret = avcodec_parameters_from_context(ost->st->codecpar, ost->enc_ctx);
    3488        5126 :         if (ret < 0) {
    3489           0 :             av_log(NULL, AV_LOG_FATAL,
    3490             :                    "Error initializing the output stream codec context.\n");
    3491           0 :             exit_program(1);
    3492             :         }
    3493             :         /*
    3494             :          * FIXME: ost->st->codec should't be needed here anymore.
    3495             :          */
    3496        5126 :         ret = avcodec_copy_context(ost->st->codec, ost->enc_ctx);
    3497        5126 :         if (ret < 0)
    3498           0 :             return ret;
    3499             : 
    3500        5126 :         if (ost->enc_ctx->nb_coded_side_data) {
    3501             :             int i;
    3502             : 
    3503         366 :             for (i = 0; i < ost->enc_ctx->nb_coded_side_data; i++) {
    3504         183 :                 const AVPacketSideData *sd_src = &ost->enc_ctx->coded_side_data[i];
    3505             :                 uint8_t *dst_data;
    3506             : 
    3507         183 :                 dst_data = av_stream_new_side_data(ost->st, sd_src->type, sd_src->size);
    3508         183 :                 if (!dst_data)
    3509           0 :                     return AVERROR(ENOMEM);
    3510         183 :                 memcpy(dst_data, sd_src->data, sd_src->size);
    3511             :             }
    3512             :         }
    3513             : 
    3514             :         /*
    3515             :          * Add global input side data. For now this is naive, and copies it
    3516             :          * from the input stream's global side data. All side data should
    3517             :          * really be funneled over AVFrame and libavfilter, then added back to
    3518             :          * packet side data, and then potentially using the first packet for
    3519             :          * global side data.
    3520             :          */
    3521        5126 :         if (ist) {
    3522             :             int i;
    3523        5304 :             for (i = 0; i < ist->st->nb_side_data; i++) {
    3524         209 :                 AVPacketSideData *sd = &ist->st->side_data[i];
    3525         209 :                 uint8_t *dst = av_stream_new_side_data(ost->st, sd->type, sd->size);
    3526         209 :                 if (!dst)
    3527           0 :                     return AVERROR(ENOMEM);
    3528         209 :                 memcpy(dst, sd->data, sd->size);
    3529         209 :                 if (ist->autorotate && sd->type == AV_PKT_DATA_DISPLAYMATRIX)
    3530           0 :                     av_display_rotation_set((uint32_t *)dst, 0);
    3531             :             }
    3532             :         }
    3533             : 
    3534             :         // copy timebase while removing common factors
    3535        5126 :         if (ost->st->time_base.num <= 0 || ost->st->time_base.den <= 0)
    3536        5126 :             ost->st->time_base = av_add_q(ost->enc_ctx->time_base, (AVRational){0, 1});
    3537             : 
    3538             :         // copy estimated duration as a hint to the muxer
    3539        5126 :         if (ost->st->duration <= 0 && ist && ist->st->duration > 0)
    3540        4033 :             ost->st->duration = av_rescale_q(ist->st->duration, ist->st->time_base, ost->st->time_base);
    3541             : 
    3542        5126 :         ost->st->codec->codec= ost->enc_ctx->codec;
    3543         182 :     } else if (ost->stream_copy) {
    3544         181 :         ret = init_output_stream_streamcopy(ost);
    3545         181 :         if (ret < 0)
    3546           0 :             return ret;
    3547             : 
    3548             :         /*
    3549             :          * FIXME: will the codec context used by the parser during streamcopy
    3550             :          * This should go away with the new parser API.
    3551             :          */
    3552         181 :         ret = avcodec_parameters_to_context(ost->parser_avctx, ost->st->codecpar);
    3553         181 :         if (ret < 0)
    3554           0 :             return ret;
    3555             :     }
    3556             : 
    3557             :     // parse user provided disposition, and update stream values
    3558        5308 :     if (ost->disposition) {
    3559             :         static const AVOption opts[] = {
    3560             :             { "disposition"         , NULL, 0, AV_OPT_TYPE_FLAGS, { .i64 = 0 }, INT64_MIN, INT64_MAX, .unit = "flags" },
    3561             :             { "default"             , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_DEFAULT           },    .unit = "flags" },
    3562             :             { "dub"                 , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_DUB               },    .unit = "flags" },
    3563             :             { "original"            , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_ORIGINAL          },    .unit = "flags" },
    3564             :             { "comment"             , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_COMMENT           },    .unit = "flags" },
    3565             :             { "lyrics"              , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_LYRICS            },    .unit = "flags" },
    3566             :             { "karaoke"             , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_KARAOKE           },    .unit = "flags" },
    3567             :             { "forced"              , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_FORCED            },    .unit = "flags" },
    3568             :             { "hearing_impaired"    , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_HEARING_IMPAIRED  },    .unit = "flags" },
    3569             :             { "visual_impaired"     , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_VISUAL_IMPAIRED   },    .unit = "flags" },
    3570             :             { "clean_effects"       , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_CLEAN_EFFECTS     },    .unit = "flags" },
    3571             :             { "captions"            , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_CAPTIONS          },    .unit = "flags" },
    3572             :             { "descriptions"        , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_DESCRIPTIONS      },    .unit = "flags" },
    3573             :             { "metadata"            , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_METADATA          },    .unit = "flags" },
    3574             :             { NULL },
    3575             :         };
    3576             :         static const AVClass class = {
    3577             :             .class_name = "",
    3578             :             .item_name  = av_default_item_name,
    3579             :             .option     = opts,
    3580             :             .version    = LIBAVUTIL_VERSION_INT,
    3581             :         };
    3582           0 :         const AVClass *pclass = &class;
    3583             : 
    3584           0 :         ret = av_opt_eval_flags(&pclass, &opts[0], ost->disposition, &ost->st->disposition);
    3585           0 :         if (ret < 0)
    3586           0 :             return ret;
    3587             :     }
    3588             : 
    3589             :     /* initialize bitstream filters for the output stream
    3590             :      * needs to be done here, because the codec id for streamcopy is not
    3591             :      * known until now */
    3592        5308 :     ret = init_output_bsfs(ost);
    3593        5308 :     if (ret < 0)
    3594           0 :         return ret;
    3595             : 
    3596        5308 :     ost->initialized = 1;
    3597             : 
    3598        5308 :     ret = check_init_output_file(output_files[ost->file_index], ost->file_index);
    3599        5308 :     if (ret < 0)
    3600           0 :         return ret;
    3601             : 
    3602        5308 :     return ret;
    3603             : }
    3604             : 
    3605           0 : static void report_new_stream(int input_index, AVPacket *pkt)
    3606             : {
    3607           0 :     InputFile *file = input_files[input_index];
    3608           0 :     AVStream *st = file->ctx->streams[pkt->stream_index];
    3609             : 
    3610           0 :     if (pkt->stream_index < file->nb_streams_warn)
    3611           0 :         return;
    3612           0 :     av_log(file->ctx, AV_LOG_WARNING,
    3613             :            "New %s stream %d:%d at pos:%"PRId64" and DTS:%ss\n",
    3614           0 :            av_get_media_type_string(st->codecpar->codec_type),
    3615             :            input_index, pkt->stream_index,
    3616           0 :            pkt->pos, av_ts2timestr(pkt->dts, &st->time_base));
    3617           0 :     file->nb_streams_warn = pkt->stream_index + 1;
    3618             : }
    3619             : 
    3620        5175 : static int transcode_init(void)
    3621             : {
    3622        5175 :     int ret = 0, i, j, k;
    3623             :     AVFormatContext *oc;
    3624             :     OutputStream *ost;
    3625             :     InputStream *ist;
    3626        5175 :     char error[1024] = {0};
    3627             : 
    3628       10270 :     for (i = 0; i < nb_filtergraphs; i++) {
    3629        5095 :         FilterGraph *fg = filtergraphs[i];
    3630       10192 :         for (j = 0; j < fg->nb_outputs; j++) {
    3631        5097 :             OutputFilter *ofilter = fg->outputs[j];
    3632        5097 :             if (!ofilter->ost || ofilter->ost->source_index >= 0)
    3633        5050 :                 continue;
    3634          47 :             if (fg->nb_inputs != 1)
    3635          31 :                 continue;
    3636          17 :             for (k = nb_input_streams-1; k >= 0 ; k--)
    3637          17 :                 if (fg->inputs[0]->ist == input_streams[k])
    3638          16 :                     break;
    3639          16 :             ofilter->ost->source_index = k;
    3640             :         }
    3641             :     }
    3642             : 
    3643             :     /* init framerate emulation */
    3644       10408 :     for (i = 0; i < nb_input_files; i++) {
    3645        5233 :         InputFile *ifile = input_files[i];
    3646        5233 :         if (ifile->rate_emu)
    3647           0 :             for (j = 0; j < ifile->nb_streams; j++)
    3648           0 :                 input_streams[j + ifile->ist_index]->start = av_gettime_relative();
    3649             :     }
    3650             : 
    3651             :     /* init input streams */
    3652       10709 :     for (i = 0; i < nb_input_streams; i++)
    3653        5534 :         if ((ret = init_input_stream(i, error, sizeof(error))) < 0) {
    3654           0 :             for (i = 0; i < nb_output_streams; i++) {
    3655           0 :                 ost = output_streams[i];
    3656           0 :                 avcodec_close(ost->enc_ctx);
    3657             :             }
    3658           0 :             goto dump_format;
    3659             :         }
    3660             : 
    3661             :     /* open each encoder */
    3662       10483 :     for (i = 0; i < nb_output_streams; i++) {
    3663             :         // skip streams fed from filtergraphs until we have a frame for them
    3664        5308 :         if (output_streams[i]->filter)
    3665        5097 :             continue;
    3666             : 
    3667         211 :         ret = init_output_stream(output_streams[i], error, sizeof(error));
    3668         211 :         if (ret < 0)
    3669           0 :             goto dump_format;
    3670             :     }
    3671             : 
    3672             :     /* discard unused programs */
    3673       10408 :     for (i = 0; i < nb_input_files; i++) {
    3674        5233 :         InputFile *ifile = input_files[i];
    3675        5258 :         for (j = 0; j < ifile->ctx->nb_programs; j++) {
    3676          25 :             AVProgram *p = ifile->ctx->programs[j];
    3677          25 :             int discard  = AVDISCARD_ALL;
    3678             : 
    3679          25 :             for (k = 0; k < p->nb_stream_indexes; k++)
    3680          25 :                 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
    3681          25 :                     discard = AVDISCARD_DEFAULT;
    3682          25 :                     break;
    3683             :                 }
    3684          25 :             p->discard = discard;
    3685             :         }
    3686             :     }
    3687             : 
    3688             :     /* write headers for files with no streams */
    3689       10351 :     for (i = 0; i < nb_output_files; i++) {
    3690        5176 :         oc = output_files[i]->ctx;
    3691        5176 :         if (oc->oformat->flags & AVFMT_NOSTREAMS && oc->nb_streams == 0) {
    3692           1 :             ret = check_init_output_file(output_files[i], i);
    3693           1 :             if (ret < 0)
    3694           0 :                 goto dump_format;
    3695             :         }
    3696             :     }
    3697             : 
    3698        5175 :  dump_format:
    3699             :     /* dump the stream mapping */
    3700        5175 :     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
    3701       10709 :     for (i = 0; i < nb_input_streams; i++) {
    3702        5534 :         ist = input_streams[i];
    3703             : 
    3704       10640 :         for (j = 0; j < ist->nb_filters; j++) {
    3705        5106 :             if (!filtergraph_is_simple(ist->filters[j]->graph)) {
    3706         224 :                 av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d (%s) -> %s",
    3707         168 :                        ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
    3708          56 :                        ist->filters[j]->name);
    3709          56 :                 if (nb_filtergraphs > 1)
    3710           0 :                     av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
    3711          56 :                 av_log(NULL, AV_LOG_INFO, "\n");
    3712             :             }
    3713             :         }
    3714             :     }
    3715             : 
    3716       10483 :     for (i = 0; i < nb_output_streams; i++) {
    3717        5308 :         ost = output_streams[i];
    3718             : 
    3719        5308 :         if (ost->attachment_filename) {
    3720             :             /* an attached file */
    3721           1 :             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
    3722             :                    ost->attachment_filename, ost->file_index, ost->index);
    3723           1 :             continue;
    3724             :         }
    3725             : 
    3726        5307 :         if (ost->filter && !filtergraph_is_simple(ost->filter->graph)) {
    3727             :             /* output from a complex graph */
    3728          47 :             av_log(NULL, AV_LOG_INFO, "  %s", ost->filter->name);
    3729          47 :             if (nb_filtergraphs > 1)
    3730           0 :                 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
    3731             : 
    3732          94 :             av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
    3733          94 :                    ost->index, ost->enc ? ost->enc->name : "?");
    3734          47 :             continue;
    3735             :         }
    3736             : 
    3737       15780 :         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
    3738        5260 :                input_streams[ost->source_index]->file_index,
    3739        5260 :                input_streams[ost->source_index]->st->index,
    3740             :                ost->file_index,
    3741             :                ost->index);
    3742        5260 :         if (ost->sync_ist != input_streams[ost->source_index])
    3743           0 :             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
    3744           0 :                    ost->sync_ist->file_index,
    3745           0 :                    ost->sync_ist->st->index);
    3746        5260 :         if (ost->stream_copy)
    3747         181 :             av_log(NULL, AV_LOG_INFO, " (copy)");
    3748             :         else {
    3749        5079 :             const AVCodec *in_codec    = input_streams[ost->source_index]->dec;
    3750        5079 :             const AVCodec *out_codec   = ost->enc;
    3751        5079 :             const char *decoder_name   = "?";
    3752        5079 :             const char *in_codec_name  = "?";
    3753        5079 :             const char *encoder_name   = "?";
    3754        5079 :             const char *out_codec_name = "?";
    3755             :             const AVCodecDescriptor *desc;
    3756             : 
    3757        5079 :             if (in_codec) {
    3758        5079 :                 decoder_name  = in_codec->name;
    3759        5079 :                 desc = avcodec_descriptor_get(in_codec->id);
    3760        5079 :                 if (desc)
    3761        5079 :                     in_codec_name = desc->name;
    3762        5079 :                 if (!strcmp(decoder_name, in_codec_name))
    3763        4927 :                     decoder_name = "native";
    3764             :             }
    3765             : 
    3766        5079 :             if (out_codec) {
    3767        5079 :                 encoder_name   = out_codec->name;
    3768        5079 :                 desc = avcodec_descriptor_get(out_codec->id);
    3769        5079 :                 if (desc)
    3770        5079 :                     out_codec_name = desc->name;
    3771        5079 :                 if (!strcmp(encoder_name, out_codec_name))
    3772        4992 :                     encoder_name = "native";
    3773             :             }
    3774             : 
    3775        5079 :             av_log(NULL, AV_LOG_INFO, " (%s (%s) -> %s (%s))",
    3776             :                    in_codec_name, decoder_name,
    3777             :                    out_codec_name, encoder_name);
    3778             :         }
    3779        5260 :         av_log(NULL, AV_LOG_INFO, "\n");
    3780             :     }
    3781             : 
    3782        5175 :     if (ret) {
    3783           0 :         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
    3784           0 :         return ret;
    3785             :     }
    3786             : 
    3787        5175 :     atomic_store(&transcode_init_done, 1);
    3788             : 
    3789        5175 :     return 0;
    3790             : }
    3791             : 
    3792             : /* Return 1 if there remain streams where more output is wanted, 0 otherwise. */
    3793     1542634 : static int need_output(void)
    3794             : {
    3795             :     int i;
    3796             : 
    3797     1548202 :     for (i = 0; i < nb_output_streams; i++) {
    3798     1543027 :         OutputStream *ost    = output_streams[i];
    3799     1543027 :         OutputFile *of       = output_files[ost->file_index];
    3800     1543027 :         AVFormatContext *os  = output_files[ost->file_index]->ctx;
    3801             : 
    3802     3082389 :         if (ost->finished ||
    3803     3072617 :             (os->pb && avio_tell(os->pb) >= of->limit_filesize))
    3804        3665 :             continue;
    3805     1539362 :         if (ost->frame_number >= ost->max_frames) {
    3806             :             int j;
    3807        3808 :             for (j = 0; j < of->ctx->nb_streams; j++)
    3808        1905 :                 close_output_stream(output_streams[of->ost_index + j]);
    3809        1903 :             continue;
    3810             :         }
    3811             : 
    3812     1537459 :         return 1;
    3813             :     }
    3814             : 
    3815        5175 :     return 0;
    3816             : }
    3817             : 
    3818             : /**
    3819             :  * Select the output stream to process.
    3820             :  *
    3821             :  * @return  selected output stream, or NULL if none available
    3822             :  */
    3823     1537459 : static OutputStream *choose_output(void)
    3824             : {
    3825             :     int i;
    3826     1537459 :     int64_t opts_min = INT64_MAX;
    3827     1537459 :     OutputStream *ost_min = NULL;
    3828             : 
    3829     2300849 :     for (i = 0; i < nb_output_streams; i++) {
    3830     1557824 :         OutputStream *ost = output_streams[i];
    3831     2313868 :         int64_t opts = ost->st->cur_dts == AV_NOPTS_VALUE ? INT64_MIN :
    3832      756044 :                        av_rescale_q(ost->st->cur_dts, ost->st->time_base,
    3833      756044 :                                     AV_TIME_BASE_Q);
    3834     1557824 :         if (ost->st->cur_dts == AV_NOPTS_VALUE)
    3835      801780 :             av_log(NULL, AV_LOG_DEBUG, "cur_dts is invalid (this is harmless if it occurs once at the start per stream)\n");
    3836             : 
    3837     1557824 :         if (!ost->initialized && !ost->inputs_done)
    3838      794434 :             return ost;
    3839             : 
    3840      763390 :         if (!ost->finished && opts < opts_min) {
    3841      751282 :             opts_min = opts;
    3842      751282 :             ost_min  = ost->unavailable ? NULL : ost;
    3843             :         }
    3844             :     }
    3845      743025 :     return ost_min;
    3846             : }
    3847             : 
    3848           0 : static void set_tty_echo(int on)
    3849             : {
    3850             : #if HAVE_TERMIOS_H
    3851             :     struct termios tty;
    3852           0 :     if (tcgetattr(0, &tty) == 0) {
    3853           0 :         if (on) tty.c_lflag |= ECHO;
    3854           0 :         else    tty.c_lflag &= ~ECHO;
    3855           0 :         tcsetattr(0, TCSANOW, &tty);
    3856             :     }
    3857             : #endif
    3858           0 : }
    3859             : 
    3860        5718 : static int check_keyboard_interaction(int64_t cur_time)
    3861             : {
    3862             :     int i, ret, key;
    3863             :     static int64_t last_time;
    3864        5718 :     if (received_nb_signals)
    3865           0 :         return AVERROR_EXIT;
    3866             :     /* read_key() returns 0 on EOF */
    3867        5718 :     if(cur_time - last_time >= 100000 && !run_as_daemon){
    3868          37 :         key =  read_key();
    3869          37 :         last_time = cur_time;
    3870             :     }else
    3871        5681 :         key = -1;
    3872        5718 :     if (key == 'q')
    3873           0 :         return AVERROR_EXIT;
    3874        5718 :     if (key == '+') av_log_set_level(av_log_get_level()+10);
    3875        5718 :     if (key == '-') av_log_set_level(av_log_get_level()-10);
    3876        5718 :     if (key == 's') qp_hist     ^= 1;
    3877        5718 :     if (key == 'h'){
    3878           0 :         if (do_hex_dump){
    3879           0 :             do_hex_dump = do_pkt_dump = 0;
    3880           0 :         } else if(do_pkt_dump){
    3881           0 :             do_hex_dump = 1;
    3882             :         } else
    3883           0 :             do_pkt_dump = 1;
    3884           0 :         av_log_set_level(AV_LOG_DEBUG);
    3885             :     }
    3886        5718 :     if (key == 'c' || key == 'C'){
    3887           0 :         char buf[4096], target[64], command[256], arg[256] = {0};
    3888             :         double time;
    3889           0 :         int k, n = 0;
    3890           0 :         fprintf(stderr, "\nEnter command: <target>|all <time>|-1 <command>[ <argument>]\n");
    3891           0 :         i = 0;
    3892           0 :         set_tty_echo(1);
    3893           0 :         while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
    3894           0 :             if (k > 0)
    3895           0 :                 buf[i++] = k;
    3896           0 :         buf[i] = 0;
    3897           0 :         set_tty_echo(0);
    3898           0 :         fprintf(stderr, "\n");
    3899           0 :         if (k > 0 &&
    3900             :             (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
    3901           0 :             av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
    3902             :                    target, time, command, arg);
    3903           0 :             for (i = 0; i < nb_filtergraphs; i++) {
    3904           0 :                 FilterGraph *fg = filtergraphs[i];
    3905           0 :                 if (fg->graph) {
    3906           0 :                     if (time < 0) {
    3907           0 :                         ret = avfilter_graph_send_command(fg->graph, target, command, arg, buf, sizeof(buf),
    3908             :                                                           key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
    3909           0 :                         fprintf(stderr, "Command reply for stream %d: ret:%d res:\n%s", i, ret, buf);
    3910           0 :                     } else if (key == 'c') {
    3911           0 :                         fprintf(stderr, "Queuing commands only on filters supporting the specific command is unsupported\n");
    3912           0 :                         ret = AVERROR_PATCHWELCOME;
    3913             :                     } else {
    3914           0 :                         ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
    3915           0 :                         if (ret < 0)
    3916           0 :                             fprintf(stderr, "Queuing command failed with error %s\n", av_err2str(ret));
    3917             :                     }
    3918             :                 }
    3919             :             }
    3920             :         } else {
    3921           0 :             av_log(NULL, AV_LOG_ERROR,
    3922             :                    "Parse error, at least 3 arguments were expected, "
    3923             :                    "only %d given in string '%s'\n", n, buf);
    3924             :         }
    3925             :     }
    3926        5718 :     if (key == 'd' || key == 'D'){
    3927           0 :         int debug=0;
    3928           0 :         if(key == 'D') {
    3929           0 :             debug = input_streams[0]->st->codec->debug<<1;
    3930           0 :             if(!debug) debug = 1;
    3931           0 :             while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
    3932           0 :                 debug += debug;
    3933             :         }else{
    3934             :             char buf[32];
    3935           0 :             int k = 0;
    3936           0 :             i = 0;
    3937           0 :             set_tty_echo(1);
    3938           0 :             while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
    3939           0 :                 if (k > 0)
    3940           0 :                     buf[i++] = k;
    3941           0 :             buf[i] = 0;
    3942           0 :             set_tty_echo(0);
    3943           0 :             fprintf(stderr, "\n");
    3944           0 :             if (k <= 0 || sscanf(buf, "%d", &debug)!=1)
    3945           0 :                 fprintf(stderr,"error parsing debug value\n");
    3946             :         }
    3947           0 :         for(i=0;i<nb_input_streams;i++) {
    3948           0 :             input_streams[i]->st->codec->debug = debug;
    3949             :         }
    3950           0 :         for(i=0;i<nb_output_streams;i++) {
    3951           0 :             OutputStream *ost = output_streams[i];
    3952           0 :             ost->enc_ctx->debug = debug;
    3953             :         }
    3954           0 :         if(debug) av_log_set_level(AV_LOG_DEBUG);
    3955           0 :         fprintf(stderr,"debug=%d\n", debug);
    3956             :     }
    3957        5718 :     if (key == '?'){
    3958           0 :         fprintf(stderr, "key    function\n"
    3959             :                         "?      show this help\n"
    3960             :                         "+      increase verbosity\n"
    3961             :                         "-      decrease verbosity\n"
    3962             :                         "c      Send command to first matching filter supporting it\n"
    3963             :                         "C      Send/Queue command to all matching filters\n"
    3964             :                         "D      cycle through available debug modes\n"
    3965             :                         "h      dump packets/hex press to cycle through the 3 states\n"
    3966             :                         "q      quit\n"
    3967             :                         "s      Show QP histogram\n"
    3968             :         );
    3969             :     }
    3970        5718 :     return 0;
    3971             : }
    3972             : 
    3973             : #if HAVE_PTHREADS
    3974         133 : static void *input_thread(void *arg)
    3975             : {
    3976         133 :     InputFile *f = arg;
    3977         133 :     unsigned flags = f->non_blocking ? AV_THREAD_MESSAGE_NONBLOCK : 0;
    3978         133 :     int ret = 0;
    3979             : 
    3980        6420 :     while (1) {
    3981             :         AVPacket pkt;
    3982        6553 :         ret = av_read_frame(f->ctx, &pkt);
    3983             : 
    3984        6553 :         if (ret == AVERROR(EAGAIN)) {
    3985           0 :             av_usleep(10000);
    3986           0 :             continue;
    3987             :         }
    3988        6553 :         if (ret < 0) {
    3989          44 :             av_thread_message_queue_set_err_recv(f->in_thread_queue, ret);
    3990          44 :             break;
    3991             :         }
    3992        6509 :         ret = av_thread_message_queue_send(f->in_thread_queue, &pkt, flags);
    3993        6509 :         if (flags && ret == AVERROR(EAGAIN)) {
    3994          55 :             flags = 0;
    3995          55 :             ret = av_thread_message_queue_send(f->in_thread_queue, &pkt, flags);
    3996          55 :             av_log(f->ctx, AV_LOG_WARNING,
    3997             :                    "Thread message queue blocking; consider raising the "
    3998             :                    "thread_queue_size option (current value: %d)\n",
    3999             :                    f->thread_queue_size);
    4000             :         }
    4001        6509 :         if (ret < 0) {
    4002          89 :             if (ret != AVERROR_EOF)
    4003           0 :                 av_log(f->ctx, AV_LOG_ERROR,
    4004             :                        "Unable to send packet to main thread: %s\n",
    4005           0 :                        av_err2str(ret));
    4006          89 :             av_packet_unref(&pkt);
    4007          89 :             av_thread_message_queue_set_err_recv(f->in_thread_queue, ret);
    4008          89 :             break;
    4009             :         }
    4010             :     }
    4011             : 
    4012         266 :     return NULL;
    4013             : }
    4014             : 
    4015       15526 : static void free_input_threads(void)
    4016             : {
    4017             :     int i;
    4018             : 
    4019       31225 :     for (i = 0; i < nb_input_files; i++) {
    4020       15699 :         InputFile *f = input_files[i];
    4021             :         AVPacket pkt;
    4022             : 
    4023       15699 :         if (!f || !f->in_thread_queue)
    4024       15566 :             continue;
    4025         133 :         av_thread_message_queue_set_err_send(f->in_thread_queue, AVERROR_EOF);
    4026         970 :         while (av_thread_message_queue_recv(f->in_thread_queue, &pkt, 0) >= 0)
    4027         704 :             av_packet_unref(&pkt);
    4028             : 
    4029         133 :         pthread_join(f->thread, NULL);
    4030         133 :         f->joined = 1;
    4031         133 :         av_thread_message_queue_free(&f->in_thread_queue);
    4032             :     }
    4033       15526 : }
    4034             : 
    4035        5175 : static int init_input_threads(void)
    4036             : {
    4037             :     int i, ret;
    4038             : 
    4039        5175 :     if (nb_input_files == 1)
    4040        5100 :         return 0;
    4041             : 
    4042         208 :     for (i = 0; i < nb_input_files; i++) {
    4043         133 :         InputFile *f = input_files[i];
    4044             : 
    4045         190 :         if (f->ctx->pb ? !f->ctx->pb->seekable :
    4046          57 :             strcmp(f->ctx->iformat->name, "lavfi"))
    4047          56 :             f->non_blocking = 1;
    4048         133 :         ret = av_thread_message_queue_alloc(&f->in_thread_queue,
    4049         133 :                                             f->thread_queue_size, sizeof(AVPacket));
    4050         133 :         if (ret < 0)
    4051           0 :             return ret;
    4052             : 
    4053         133 :         if ((ret = pthread_create(&f->thread, NULL, input_thread, f))) {
    4054           0 :             av_log(NULL, AV_LOG_ERROR, "pthread_create failed: %s. Try to increase `ulimit -v` or decrease `ulimit -s`.\n", strerror(ret));
    4055           0 :             av_thread_message_queue_free(&f->in_thread_queue);
    4056           0 :             return AVERROR(ret);
    4057             :         }
    4058             :     }
    4059          75 :     return 0;
    4060             : }
    4061             : 
    4062      792304 : static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
    4063             : {
    4064      792304 :     return av_thread_message_queue_recv(f->in_thread_queue, pkt,
    4065      792304 :                                         f->non_blocking ?
    4066             :                                         AV_THREAD_MESSAGE_NONBLOCK : 0);
    4067             : }
    4068             : #endif
    4069             : 
    4070     1175925 : static int get_input_packet(InputFile *f, AVPacket *pkt)
    4071             : {
    4072     1175925 :     if (f->rate_emu) {
    4073             :         int i;
    4074           0 :         for (i = 0; i < f->nb_streams; i++) {
    4075           0 :             InputStream *ist = input_streams[f->ist_index + i];
    4076           0 :             int64_t pts = av_rescale(ist->dts, 1000000, AV_TIME_BASE);
    4077           0 :             int64_t now = av_gettime_relative() - ist->start;
    4078           0 :             if (pts > now)
    4079           0 :                 return AVERROR(EAGAIN);
    4080             :         }
    4081             :     }
    4082             : 
    4083             : #if HAVE_PTHREADS
    4084     1175925 :     if (nb_input_files > 1)
    4085      792304 :         return get_input_packet_mt(f, pkt);
    4086             : #endif
    4087      383621 :     return av_read_frame(f->ctx, pkt);
    4088             : }
    4089             : 
    4090           1 : static int got_eagain(void)
    4091             : {
    4092             :     int i;
    4093           1 :     for (i = 0; i < nb_output_streams; i++)
    4094           1 :         if (output_streams[i]->unavailable)
    4095           1 :             return 1;
    4096           0 :     return 0;
    4097             : }
    4098             : 
    4099      385961 : static void reset_eagain(void)
    4100             : {
    4101             :     int i;
    4102      778157 :     for (i = 0; i < nb_input_files; i++)
    4103      392196 :         input_files[i]->eagain = 0;
    4104      784957 :     for (i = 0; i < nb_output_streams; i++)
    4105      398996 :         output_streams[i]->unavailable = 0;
    4106      385961 : }
    4107             : 
    4108             : // set duration to max(tmp, duration) in a proper time base and return duration's time_base
    4109           0 : static AVRational duration_max(int64_t tmp, int64_t *duration, AVRational tmp_time_base,
    4110             :                                 AVRational time_base)
    4111             : {
    4112             :     int ret;
    4113             : 
    4114           0 :     if (!*duration) {
    4115           0 :         *duration = tmp;
    4116           0 :         return tmp_time_base;
    4117             :     }
    4118             : 
    4119           0 :     ret = av_compare_ts(*duration, time_base, tmp, tmp_time_base);
    4120           0 :     if (ret < 0) {
    4121           0 :         *duration = tmp;
    4122           0 :         return tmp_time_base;
    4123             :     }
    4124             : 
    4125           0 :     return time_base;
    4126             : }
    4127             : 
    4128           0 : static int seek_to_start(InputFile *ifile, AVFormatContext *is)
    4129             : {
    4130             :     InputStream *ist;
    4131             :     AVCodecContext *avctx;
    4132           0 :     int i, ret, has_audio = 0;
    4133           0 :     int64_t duration = 0;
    4134             : 
    4135           0 :     ret = av_seek_frame(is, -1, is->start_time, 0);
    4136           0 :     if (ret < 0)
    4137           0 :         return ret;
    4138             : 
    4139           0 :     for (i = 0; i < ifile->nb_streams; i++) {
    4140           0 :         ist   = input_streams[ifile->ist_index + i];
    4141           0 :         avctx = ist->dec_ctx;
    4142             : 
    4143             :         // flush decoders
    4144           0 :         if (ist->decoding_needed) {
    4145           0 :             process_input_packet(ist, NULL, 1);
    4146           0 :             avcodec_flush_buffers(avctx);
    4147             :         }
    4148             : 
    4149             :         /* duration is the length of the last frame in a stream
    4150             :          * when audio stream is present we don't care about
    4151             :          * last video frame length because it's not defined exactly */
    4152           0 :         if (avctx->codec_type == AVMEDIA_TYPE_AUDIO && ist->nb_samples)
    4153           0 :             has_audio = 1;
    4154             :     }
    4155             : 
    4156           0 :     for (i = 0; i < ifile->nb_streams; i++) {
    4157           0 :         ist   = input_streams[ifile->ist_index + i];
    4158           0 :         avctx = ist->dec_ctx;
    4159             : 
    4160           0 :         if (has_audio) {
    4161           0 :             if (avctx->codec_type == AVMEDIA_TYPE_AUDIO && ist->nb_samples) {
    4162           0 :                 AVRational sample_rate = {1, avctx->sample_rate};
    4163             : 
    4164           0 :                 duration = av_rescale_q(ist->nb_samples, sample_rate, ist->st->time_base);
    4165             :             } else
    4166           0 :                 continue;
    4167             :         } else {
    4168           0 :             if (ist->framerate.num) {
    4169           0 :                 duration = av_rescale_q(1, ist->framerate, ist->st->time_base);
    4170           0 :             } else if (ist->st->avg_frame_rate.num) {
    4171           0 :                 duration = av_rescale_q(1, ist->st->avg_frame_rate, ist->st->time_base);
    4172           0 :             } else duration = 1;
    4173             :         }
    4174           0 :         if (!ifile->duration)
    4175           0 :             ifile->time_base = ist->st->time_base;
    4176             :         /* the total duration of the stream, max_pts - min_pts is
    4177             :          * the duration of the stream without the last frame */
    4178           0 :         duration += ist->max_pts - ist->min_pts;
    4179           0 :         ifile->time_base = duration_max(duration, &ifile->duration, ist->st->time_base,
    4180             :                                         ifile->time_base);
    4181             :     }
    4182             : 
    4183           0 :     if (ifile->loop > 0)
    4184           0 :         ifile->loop--;
    4185             : 
    4186           0 :     return ret;
    4187             : }
    4188             : 
    4189             : /*
    4190             :  * Return
    4191             :  * - 0 -- one packet was read and processed
    4192             :  * - AVERROR(EAGAIN) -- no packets were available for selected file,
    4193             :  *   this function should be called again
    4194             :  * - AVERROR_EOF -- this function should not be called again
    4195             :  */
    4196     1175925 : static int process_input(int file_index)
    4197             : {
    4198     1175925 :     InputFile *ifile = input_files[file_index];
    4199             :     AVFormatContext *is;
    4200             :     InputStream *ist;
    4201             :     AVPacket pkt;
    4202             :     int ret, i, j;
    4203             :     int64_t duration;
    4204             :     int64_t pkt_dts;
    4205             : 
    4206     1175925 :     is  = ifile->ctx;
    4207     1175925 :     ret = get_input_packet(ifile, &pkt);
    4208             : 
    4209     1175925 :     if (ret == AVERROR(EAGAIN)) {
    4210      786548 :         ifile->eagain = 1;
    4211      786548 :         return ret;
    4212             :     }
    4213      389377 :     if (ret < 0 && ifile->loop) {
    4214           0 :         if ((ret = seek_to_start(ifile, is)) < 0)
    4215           0 :             return ret;
    4216           0 :         ret = get_input_packet(ifile, &pkt);
    4217           0 :         if (ret == AVERROR(EAGAIN)) {
    4218           0 :             ifile->eagain = 1;
    4219           0 :             return ret;
    4220             :         }
    4221             :     }
    4222      389377 :     if (ret < 0) {
    4223        3417 :         if (ret != AVERROR_EOF) {
    4224          76 :             print_error(is->filename, ret);
    4225          76 :             if (exit_on_error)
    4226           0 :                 exit_program(1);
    4227             :         }
    4228             : 
    4229        6509 :         for (i = 0; i < ifile->nb_streams; i++) {
    4230        3679 :             ist = input_streams[ifile->ist_index + i];
    4231        3679 :             if (ist->decoding_needed) {
    4232        3335 :                 ret = process_input_packet(ist, NULL, 0);
    4233        3335 :                 if (ret>0)
    4234         587 :                     return 0;
    4235             :             }
    4236             : 
    4237             :             /* mark all outputs that don't go through lavfi as finished */
    4238        6437 :             for (j = 0; j < nb_output_streams; j++) {
    4239        3345 :                 OutputStream *ost = output_streams[j];
    4240             : 
    4241        6238 :                 if (ost->source_index == ifile->ist_index + i &&
    4242        5617 :                     (ost->stream_copy || ost->enc->type == AVMEDIA_TYPE_SUBTITLE))
    4243         198 :                     finish_output_stream(ost);
    4244             :             }
    4245             :         }
    4246             : 
    4247        2830 :         ifile->eof_reached = 1;
    4248        2830 :         return AVERROR(EAGAIN);
    4249             :     }
    4250             : 
    4251      385960 :     reset_eagain();
    4252             : 
    4253      385960 :     if (do_pkt_dump) {
    4254           0 :         av_pkt_dump_log2(NULL, AV_LOG_INFO, &pkt, do_hex_dump,
    4255           0 :                          is->streams[pkt.stream_index]);
    4256             :     }
    4257             :     /* the following test is needed in case new streams appear
    4258             :        dynamically in stream : we ignore them */
    4259      385960 :     if (pkt.stream_index >= ifile->nb_streams) {
    4260           0 :         report_new_stream(file_index, &pkt);
    4261           0 :         goto discard_packet;
    4262             :     }
    4263             : 
    4264      385960 :     ist = input_streams[ifile->ist_index + pkt.stream_index];
    4265             : 
    4266      385960 :     ist->data_size += pkt.size;
    4267      385960 :     ist->nb_packets++;
    4268             : 
    4269      385960 :     if (ist->discard)
    4270        7344 :         goto discard_packet;
    4271             : 
    4272      378616 :     if (exit_on_error && (pkt.flags & AV_PKT_FLAG_CORRUPT)) {
    4273           0 :         av_log(NULL, AV_LOG_FATAL, "%s: corrupt input packet in stream %d\n", is->filename, pkt.stream_index);
    4274           0 :         exit_program(1);
    4275             :     }
    4276             : 
    4277      378616 :     if (debug_ts) {
    4278           0 :         av_log(NULL, AV_LOG_INFO, "demuxer -> ist_index:%d type:%s "
    4279             :                "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",
    4280           0 :                ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->dec_ctx->codec_type),
    4281           0 :                av_ts2str(ist->next_dts), av_ts2timestr(ist->next_dts, &AV_TIME_BASE_Q),
    4282           0 :                av_ts2str(ist->next_pts), av_ts2timestr(ist->next_pts, &AV_TIME_BASE_Q),
    4283           0 :                av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
    4284           0 :                av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
    4285           0 :                av_ts2str(input_files[ist->file_index]->ts_offset),
    4286           0 :                av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
    4287             :     }
    4288             : 
    4289      378616 :     if(!ist->wrap_correction_done && is->start_time != AV_NOPTS_VALUE && ist->st->pts_wrap_bits < 64){
    4290             :         int64_t stime, stime2;
    4291             :         // Correcting starttime based on the enabled streams
    4292             :         // 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.
    4293             :         //       so we instead do it here as part of discontinuity handling
    4294         227 :         if (   ist->next_dts == AV_NOPTS_VALUE
    4295         227 :             && ifile->ts_offset == -is->start_time
    4296         225 :             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
    4297          41 :             int64_t new_start_time = INT64_MAX;
    4298         115 :             for (i=0; i<is->nb_streams; i++) {
    4299          74 :                 AVStream *st = is->streams[i];
    4300          74 :                 if(st->discard == AVDISCARD_ALL || st->start_time == AV_NOPTS_VALUE)
    4301          15 :                     continue;
    4302          59 :                 new_start_time = FFMIN(new_start_time, av_rescale_q(st->start_time, st->time_base, AV_TIME_BASE_Q));
    4303             :             }
    4304          41 :             if (new_start_time > is->start_time) {
    4305           3 :                 av_log(is, AV_LOG_VERBOSE, "Correcting start time by %"PRId64"\n", new_start_time - is->start_time);
    4306           3 :                 ifile->ts_offset = -new_start_time;
    4307             :             }
    4308             :         }
    4309             : 
    4310         227 :         stime = av_rescale_q(is->start_time, AV_TIME_BASE_Q, ist->st->time_base);
    4311         227 :         stime2= stime + (1ULL<<ist->st->pts_wrap_bits);
    4312         227 :         ist->wrap_correction_done = 1;
    4313             : 
    4314         227 :         if(stime2 > stime && pkt.dts != AV_NOPTS_VALUE && pkt.dts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
    4315           0 :             pkt.dts -= 1ULL<<ist->st->pts_wrap_bits;
    4316           0 :             ist->wrap_correction_done = 0;
    4317             :         }
    4318         227 :         if(stime2 > stime && pkt.pts != AV_NOPTS_VALUE && pkt.pts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
    4319           0 :             pkt.pts -= 1ULL<<ist->st->pts_wrap_bits;
    4320           0 :             ist->wrap_correction_done = 0;
    4321             :         }
    4322             :     }
    4323             : 
    4324             :     /* add the stream-global side data to the first packet */
    4325      378616 :     if (ist->nb_packets == 1) {
    4326        5507 :         for (i = 0; i < ist->st->nb_side_data; i++) {
    4327         213 :             AVPacketSideData *src_sd = &ist->st->side_data[i];
    4328             :             uint8_t *dst_data;
    4329             : 
    4330         213 :             if (src_sd->type == AV_PKT_DATA_DISPLAYMATRIX)
    4331           1 :                 continue;
    4332             : 
    4333         212 :             if (av_packet_get_side_data(&pkt, src_sd->type, NULL))
    4334           0 :                 continue;
    4335             : 
    4336         212 :             dst_data = av_packet_new_side_data(&pkt, src_sd->type, src_sd->size);
    4337         212 :             if (!dst_data)
    4338           0 :                 exit_program(1);
    4339             : 
    4340         212 :             memcpy(dst_data, src_sd->data, src_sd->size);
    4341             :         }
    4342             :     }
    4343             : 
    4344      378616 :     if (pkt.dts != AV_NOPTS_VALUE)
    4345      347376 :         pkt.dts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
    4346      378616 :     if (pkt.pts != AV_NOPTS_VALUE)
    4347      345293 :         pkt.pts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
    4348             : 
    4349      378616 :     if (pkt.pts != AV_NOPTS_VALUE)
    4350      345293 :         pkt.pts *= ist->ts_scale;
    4351      378616 :     if (pkt.dts != AV_NOPTS_VALUE)
    4352      347376 :         pkt.dts *= ist->ts_scale;
    4353             : 
    4354      378616 :     pkt_dts = av_rescale_q_rnd(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q, AV_ROUND_NEAR_INF|AV_ROUND_PASS_MINMAX);
    4355      653772 :     if ((ist->dec_ctx->codec_type == AVMEDIA_TYPE_VIDEO ||
    4356      652318 :          ist->dec_ctx->codec_type == AVMEDIA_TYPE_AUDIO) &&
    4357      345924 :         pkt_dts != AV_NOPTS_VALUE && ist->next_dts == AV_NOPTS_VALUE && !copy_ts
    4358        5264 :         && (is->iformat->flags & AVFMT_TS_DISCONT) && ifile->last_ts != AV_NOPTS_VALUE) {
    4359          78 :         int64_t delta   = pkt_dts - ifile->last_ts;
    4360         156 :         if (delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
    4361          78 :             delta >  1LL*dts_delta_threshold*AV_TIME_BASE){
    4362           0 :             ifile->ts_offset -= delta;
    4363           0 :             av_log(NULL, AV_LOG_DEBUG,
    4364             :                    "Inter stream timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
    4365             :                    delta, ifile->ts_offset);
    4366           0 :             pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
    4367           0 :             if (pkt.pts != AV_NOPTS_VALUE)
    4368           0 :                 pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
    4369             :         }
    4370             :     }
    4371             : 
    4372      378616 :     duration = av_rescale_q(ifile->duration, ifile->time_base, ist->st->time_base);
    4373      378616 :     if (pkt.pts != AV_NOPTS_VALUE) {
    4374      345293 :         pkt.pts += duration;
    4375      345293 :         ist->max_pts = FFMAX(pkt.pts, ist->max_pts);
    4376      345293 :         ist->min_pts = FFMIN(pkt.pts, ist->min_pts);
    4377             :     }
    4378             : 
    4379      378616 :     if (pkt.dts != AV_NOPTS_VALUE)
    4380      347376 :         pkt.dts += duration;
    4381             : 
    4382      378616 :     pkt_dts = av_rescale_q_rnd(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q, AV_ROUND_NEAR_INF|AV_ROUND_PASS_MINMAX);
    4383      653772 :     if ((ist->dec_ctx->codec_type == AVMEDIA_TYPE_VIDEO ||
    4384      652318 :          ist->dec_ctx->codec_type == AVMEDIA_TYPE_AUDIO) &&
    4385      686583 :          pkt_dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE &&
    4386      340659 :         !copy_ts) {
    4387      340586 :         int64_t delta   = pkt_dts - ist->next_dts;
    4388      340586 :         if (is->iformat->flags & AVFMT_TS_DISCONT) {
    4389       27284 :             if (delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
    4390       27284 :                 delta >  1LL*dts_delta_threshold*AV_TIME_BASE ||
    4391       13642 :                 pkt_dts + AV_TIME_BASE/10 < FFMAX(ist->pts, ist->dts)) {
    4392           8 :                 ifile->ts_offset -= delta;
    4393           8 :                 av_log(NULL, AV_LOG_DEBUG,
    4394             :                        "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
    4395             :                        delta, ifile->ts_offset);
    4396           8 :                 pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
    4397           8 :                 if (pkt.pts != AV_NOPTS_VALUE)
    4398           8 :                     pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
    4399             :             }
    4400             :         } else {
    4401      653888 :             if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
    4402      326944 :                  delta >  1LL*dts_error_threshold*AV_TIME_BASE) {
    4403           0 :                 av_log(NULL, AV_LOG_WARNING, "DTS %"PRId64", next:%"PRId64" st:%d invalid dropping\n", pkt.dts, ist->next_dts, pkt.stream_index);
    4404           0 :                 pkt.dts = AV_NOPTS_VALUE;
    4405             :             }
    4406      326944 :             if (pkt.pts != AV_NOPTS_VALUE){
    4407      324920 :                 int64_t pkt_pts = av_rescale_q(pkt.pts, ist->st->time_base, AV_TIME_BASE_Q);
    4408      324920 :                 delta   = pkt_pts - ist->next_dts;
    4409      649840 :                 if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
    4410      324920 :                      delta >  1LL*dts_error_threshold*AV_TIME_BASE) {
    4411           0 :                     av_log(NULL, AV_LOG_WARNING, "PTS %"PRId64", next:%"PRId64" invalid dropping st:%d\n", pkt.pts, ist->next_dts, pkt.stream_index);
    4412           0 :                     pkt.pts = AV_NOPTS_VALUE;
    4413             :                 }
    4414             :             }
    4415             :         }
    4416             :     }
    4417             : 
    4418      378616 :     if (pkt.dts != AV_NOPTS_VALUE)
    4419      347376 :         ifile->last_ts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
    4420             : 
    4421      378616 :     if (debug_ts) {
    4422           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",
    4423           0 :                ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->dec_ctx->codec_type),
    4424           0 :                av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
    4425           0 :                av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
    4426           0 :                av_ts2str(input_files[ist->file_index]->ts_offset),
    4427           0 :                av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
    4428             :     }
    4429             : 
    4430      378616 :     sub2video_heartbeat(ist, pkt.pts);
    4431             : 
    4432      378616 :     process_input_packet(ist, &pkt, 0);
    4433             : 
    4434      385960 : discard_packet:
    4435      385960 :     av_packet_unref(&pkt);
    4436             : 
    4437      385960 :     return 0;
    4438             : }
    4439             : 
    4440             : /**
    4441             :  * Perform a step of transcoding for the specified filter graph.
    4442             :  *
    4443             :  * @param[in]  graph     filter graph to consider
    4444             :  * @param[out] best_ist  input stream where a frame would allow to continue
    4445             :  * @return  0 for success, <0 for error
    4446             :  */
    4447      720147 : static int transcode_from_filter(FilterGraph *graph, InputStream **best_ist)
    4448             : {
    4449             :     int i, ret;
    4450      720147 :     int nb_requests, nb_requests_max = 0;
    4451             :     InputFilter *ifilter;
    4452             :     InputStream *ist;
    4453             : 
    4454      720147 :     *best_ist = NULL;
    4455      720147 :     ret = avfilter_graph_request_oldest(graph->graph);
    4456      720147 :     if (ret >= 0)
    4457      358339 :         return reap_filters(0);
    4458             : 
    4459      361808 :     if (ret == AVERROR_EOF) {
    4460        3194 :         ret = reap_filters(1);
    4461        6390 :         for (i = 0; i < graph->nb_outputs; i++)
    4462        3196 :             close_output_stream(graph->outputs[i]->ost);
    4463        3194 :         return ret;
    4464             :     }
    4465      358614 :     if (ret != AVERROR(EAGAIN))
    4466           0 :         return ret;
    4467             : 
    4468      721957 :     for (i = 0; i < graph->nb_inputs; i++) {
    4469      363343 :         ifilter = graph->inputs[i];
    4470      363343 :         ist = ifilter->ist;
    4471      726686 :         if (input_files[ist->file_index]->eagain ||
    4472      363343 :             input_files[ist->file_index]->eof_reached)
    4473        1114 :             continue;
    4474      362229 :         nb_requests = av_buffersrc_get_nb_failed_requests(ifilter->filter);
    4475      362229 :         if (nb_requests > nb_requests_max) {
    4476      358614 :             nb_requests_max = nb_requests;
    4477      358614 :             *best_ist = ist;
    4478             :         }
    4479             :     }
    4480             : 
    4481      358614 :     if (!*best_ist)
    4482           0 :         for (i = 0; i < graph->nb_outputs; i++)
    4483           0 :             graph->outputs[i]->ost->unavailable = 1;
    4484             : 
    4485      358614 :     return 0;
    4486             : }
    4487             : 
    4488             : /**
    4489             :  * Run a single step of transcoding.
    4490             :  *
    4491             :  * @return  0 for success, <0 for error
    4492             :  */
    4493     1537459 : static int transcode_step(void)
    4494             : {
    4495             :     OutputStream *ost;
    4496     1537459 :     InputStream  *ist = NULL;
    4497             :     int ret;
    4498             : 
    4499     1537459 :     ost = choose_output();
    4500     1537459 :     if (!ost) {
    4501           1 :         if (got_eagain()) {
    4502           1 :             reset_eagain();
    4503           1 :             av_usleep(10000);
    4504           1 :             return 0;
    4505             :         }
    4506           0 :         av_log(NULL, AV_LOG_VERBOSE, "No more inputs to read from, finishing.\n");
    4507           0 :         return AVERROR_EOF;
    4508             :     }
    4509             : 
    4510     1537458 :     if (ost->filter && !ost->filter->graph->graph) {
    4511      794434 :         if (ifilter_has_all_input_formats(ost->filter->graph)) {
    4512          10 :             ret = configure_filtergraph(ost->filter->graph);
    4513          10 :             if (ret < 0) {
    4514           0 :                 av_log(NULL, AV_LOG_ERROR, "Error reinitializing filters!\n");
    4515           0 :                 return ret;
    4516             :             }
    4517             :         }
    4518             :     }
    4519             : 
    4520     1537458 :     if (ost->filter && ost->filter->graph->graph) {
    4521      720147 :         if ((ret = transcode_from_filter(ost->filter->graph, &ist)) < 0)
    4522           0 :             return ret;
    4523     1078761 :         if (!ist)
    4524      361533 :             return 0;
    4525      817311 :     } else if (ost->filter) {
    4526             :         int i;
    4527      821522 :         for (i = 0; i < ost->filter->graph->nb_inputs; i++) {
    4528      821522 :             InputFilter *ifilter = ost->filter->graph->inputs[i];
    4529      821522 :             if (!ifilter->ist->got_output && !input_files[ifilter->ist->file_index]->eof_reached) {
    4530      794424 :                 ist = ifilter->ist;
    4531      794424 :                 break;
    4532             :             }
    4533             :         }
    4534      794424 :         if (!ist) {
    4535           0 :             ost->inputs_done = 1;
    4536           0 :             return 0;
    4537             :         }
    4538             :     } else {
    4539       22887 :         av_assert0(ost->source_index >= 0);
    4540       22887 :         ist = input_streams[ost->source_index];
    4541             :     }
    4542             : 
    4543     1175925 :     ret = process_input(ist->file_index);
    4544     1175925 :     if (ret == AVERROR(EAGAIN)) {
    4545      789378 :         if (input_files[ist->file_index]->eagain)
    4546      786548 :             ost->unavailable = 1;
    4547      789378 :         return 0;
    4548             :     }
    4549             : 
    4550      386547 :     if (ret < 0)
    4551           0 :         return ret == AVERROR_EOF ? 0 : ret;
    4552             : 
    4553      386547 :     return reap_filters(0);
    4554             : }
    4555             : 
    4556             : /*
    4557             :  * The following code is the main loop of the file converter
    4558             :  */
    4559        5175 : static int transcode(void)
    4560             : {
    4561             :     int ret, i;
    4562             :     AVFormatContext *os;
    4563             :     OutputStream *ost;
    4564             :     InputStream *ist;
    4565             :     int64_t timer_start;
    4566        5175 :     int64_t total_packets_written = 0;
    4567             : 
    4568        5175 :     ret = transcode_init();
    4569        5175 :     if (ret < 0)
    4570           0 :         goto fail;
    4571             : 
    4572        5175 :     if (stdin_interaction) {
    4573          10 :         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
    4574             :     }
    4575             : 
    4576        5175 :     timer_start = av_gettime_relative();
    4577             : 
    4578             : #if HAVE_PTHREADS
    4579        5175 :     if ((ret = init_input_threads()) < 0)
    4580           0 :         goto fail;
    4581             : #endif
    4582             : 
    4583     1547809 :     while (!received_sigterm) {
    4584     1542634 :         int64_t cur_time= av_gettime_relative();
    4585             : 
    4586             :         /* if 'q' pressed, exits */
    4587     1542634 :         if (stdin_interaction)
    4588        5718 :             if (check_keyboard_interaction(cur_time) < 0)
    4589           0 :                 break;
    4590             : 
    4591             :         /* check if there's any stream where output is still needed */
    4592     1542634 :         if (!need_output()) {
    4593        5175 :             av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n");
    4594        5175 :             break;
    4595             :         }
    4596             : 
    4597     1537459 :         ret = transcode_step();
    4598     1537459 :         if (ret < 0 && ret != AVERROR_EOF) {
    4599             :             char errbuf[128];
    4600           0 :             av_strerror(ret, errbuf, sizeof(errbuf));
    4601             : 
    4602           0 :             av_log(NULL, AV_LOG_ERROR, "Error while filtering: %s\n", errbuf);
    4603           0 :             break;
    4604             :         }
    4605             : 
    4606             :         /* dump report by using the output first video and audio streams */
    4607     1537459 :         print_report(0, timer_start, cur_time);
    4608             :     }
    4609             : #if HAVE_PTHREADS
    4610        5175 :     free_input_threads();
    4611             : #endif
    4612             : 
    4613             :     /* at the end of stream, we must flush the decoder buffers */
    4614       10709 :     for (i = 0; i < nb_input_streams; i++) {
    4615        5534 :         ist = input_streams[i];
    4616        5534 :         if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
    4617        2385 :             process_input_packet(ist, NULL, 0);
    4618             :         }
    4619             :     }
    4620        5175 :     flush_encoders();
    4621             : 
    4622        5175 :     term_exit();
    4623             : 
    4624             :     /* write the trailer if needed and close file */
    4625       10351 :     for (i = 0; i < nb_output_files; i++) {
    4626        5176 :         os = output_files[i]->ctx;
    4627        5176 :         if (!output_files[i]->header_written) {
    4628           0 :             av_log(NULL, AV_LOG_ERROR,
    4629             :                    "Nothing was written into output file %d (%s), because "
    4630             :                    "at least one of its streams received no packets.\n",
    4631           0 :                    i, os->filename);
    4632           0 :             continue;
    4633             :         }
    4634        5176 :         if ((ret = av_write_trailer(os)) < 0) {
    4635           0 :             av_log(NULL, AV_LOG_ERROR, "Error writing trailer of %s: %s\n", os->filename, av_err2str(ret));
    4636           0 :             if (exit_on_error)
    4637           0 :                 exit_program(1);
    4638             :         }
    4639             :     }
    4640             : 
    4641             :     /* dump report by using the first video and audio streams */
    4642        5175 :     print_report(1, timer_start, av_gettime_relative());
    4643             : 
    4644             :     /* close each encoder */
    4645       10483 :     for (i = 0; i < nb_output_streams; i++) {
    4646        5308 :         ost = output_streams[i];
    4647        5308 :         if (ost->encoding_needed) {
    4648        5126 :             av_freep(&ost->enc_ctx->stats_in);
    4649             :         }
    4650        5308 :         total_packets_written += ost->packets_written;
    4651             :     }
    4652             : 
    4653        5175 :     if (!total_packets_written && (abort_on_flags & ABORT_ON_FLAG_EMPTY_OUTPUT)) {
    4654           0 :         av_log(NULL, AV_LOG_FATAL, "Empty output\n");
    4655           0 :         exit_program(1);
    4656             :     }
    4657             : 
    4658             :     /* close each decoder */
    4659       10709 :     for (i = 0; i < nb_input_streams; i++) {
    4660        5534 :         ist = input_streams[i];
    4661        5534 :         if (ist->decoding_needed) {
    4662        5133 :             avcodec_close(ist->dec_ctx);
    4663        5133 :             if (ist->hwaccel_uninit)
    4664           0 :                 ist->hwaccel_uninit(ist->dec_ctx);
    4665             :         }
    4666             :     }
    4667             : 
    4668        5175 :     av_buffer_unref(&hw_device_ctx);
    4669        5175 :     hw_device_free_all();
    4670             : 
    4671             :     /* finished ! */
    4672        5175 :     ret = 0;
    4673             : 
    4674        5175 :  fail:
    4675             : #if HAVE_PTHREADS
    4676        5175 :     free_input_threads();
    4677             : #endif
    4678             : 
    4679        5175 :     if (output_streams) {
    4680       10482 :         for (i = 0; i < nb_output_streams; i++) {
    4681        5308 :             ost = output_streams[i];
    4682        5308 :             if (ost) {
    4683        5308 :                 if (ost->logfile) {
    4684           0 :                     if (fclose(ost->logfile))
    4685           0 :                         av_log(NULL, AV_LOG_ERROR,
    4686             :                                "Error closing logfile, loss of information possible: %s\n",
    4687           0 :                                av_err2str(AVERROR(errno)));
    4688           0 :                     ost->logfile = NULL;
    4689             :                 }
    4690        5308 :                 av_freep(&ost->forced_kf_pts);
    4691        5308 :                 av_freep(&ost->apad);
    4692        5308 :                 av_freep(&ost->disposition);
    4693        5308 :                 av_dict_free(&ost->encoder_opts);
    4694        5308 :                 av_dict_free(&ost->sws_dict);
    4695        5308 :                 av_dict_free(&ost->swr_opts);
    4696        5308 :                 av_dict_free(&ost->resample_opts);
    4697             :             }
    4698             :         }
    4699             :     }
    4700        5175 :     return ret;
    4701             : }
    4702             : 
    4703             : 
    4704       10350 : static int64_t getutime(void)
    4705             : {
    4706             : #if HAVE_GETRUSAGE
    4707             :     struct rusage rusage;
    4708             : 
    4709       10350 :     getrusage(RUSAGE_SELF, &rusage);
    4710       10350 :     return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
    4711             : #elif HAVE_GETPROCESSTIMES
    4712             :     HANDLE proc;
    4713             :     FILETIME c, e, k, u;
    4714             :     proc = GetCurrentProcess();
    4715             :     GetProcessTimes(proc, &c, &e, &k, &u);
    4716             :     return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
    4717             : #else
    4718             :     return av_gettime_relative();
    4719             : #endif
    4720             : }
    4721             : 
    4722           0 : static int64_t getmaxrss(void)
    4723             : {
    4724             : #if HAVE_GETRUSAGE && HAVE_STRUCT_RUSAGE_RU_MAXRSS
    4725             :     struct rusage rusage;
    4726           0 :     getrusage(RUSAGE_SELF, &rusage);
    4727           0 :     return (int64_t)rusage.ru_maxrss * 1024;
    4728             : #elif HAVE_GETPROCESSMEMORYINFO
    4729             :     HANDLE proc;
    4730             :     PROCESS_MEMORY_COUNTERS memcounters;
    4731             :     proc = GetCurrentProcess();
    4732             :     memcounters.cb = sizeof(memcounters);
    4733             :     GetProcessMemoryInfo(proc, &memcounters, sizeof(memcounters));
    4734             :     return memcounters.PeakPagefileUsage;
    4735             : #else
    4736             :     return 0;
    4737             : #endif
    4738             : }
    4739             : 
    4740           0 : static void log_callback_null(void *ptr, int level, const char *fmt, va_list vl)
    4741             : {
    4742           0 : }
    4743             : 
    4744        5176 : int main(int argc, char **argv)
    4745             : {
    4746             :     int i, ret;
    4747             :     int64_t ti;
    4748             : 
    4749        5176 :     init_dynload();
    4750             : 
    4751        5176 :     register_exit(ffmpeg_cleanup);
    4752             : 
    4753        5176 :     setvbuf(stderr,NULL,_IONBF,0); /* win32 runtime needs this */
    4754             : 
    4755        5176 :     av_log_set_flags(AV_LOG_SKIP_REPEATED);
    4756        5176 :     parse_loglevel(argc, argv, options);
    4757             : 
    4758        5176 :     if(argc>1 && !strcmp(argv[1], "-d")){
    4759           0 :         run_as_daemon=1;
    4760           0 :         av_log_set_callback(log_callback_null);
    4761           0 :         argc--;
    4762           0 :         argv++;
    4763             :     }
    4764             : 
    4765        5176 :     avcodec_register_all();
    4766             : #if CONFIG_AVDEVICE
    4767        5176 :     avdevice_register_all();
    4768             : #endif
    4769        5176 :     avfilter_register_all();
    4770        5176 :     av_register_all();
    4771        5176 :     avformat_network_init();
    4772             : 
    4773        5176 :     show_banner(argc, argv, options);
    4774             : 
    4775             :     /* parse options and open all input/output files */
    4776        5176 :     ret = ffmpeg_parse_options(argc, argv);
    4777        5175 :     if (ret < 0)
    4778           0 :         exit_program(1);
    4779             : 
    4780        5175 :     if (nb_output_files <= 0 && nb_input_files == 0) {
    4781           0 :         show_usage();
    4782           0 :         av_log(NULL, AV_LOG_WARNING, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
    4783           0 :         exit_program(1);
    4784             :     }
    4785             : 
    4786             :     /* file converter / grab */
    4787        5175 :     if (nb_output_files <= 0) {
    4788           0 :         av_log(NULL, AV_LOG_FATAL, "At least one output file must be specified\n");
    4789           0 :         exit_program(1);
    4790             :     }
    4791             : 
    4792             : //     if (nb_input_files == 0) {
    4793             : //         av_log(NULL, AV_LOG_FATAL, "At least one input file must be specified\n");
    4794             : //         exit_program(1);
    4795             : //     }
    4796             : 
    4797       10351 :     for (i = 0; i < nb_output_files; i++) {
    4798        5176 :         if (strcmp(output_files[i]->ctx->oformat->name, "rtp"))
    4799        5176 :             want_sdp = 0;
    4800             :     }
    4801             : 
    4802        5175 :     current_time = ti = getutime();
    4803        5175 :     if (transcode() < 0)
    4804           0 :         exit_program(1);
    4805        5175 :     ti = getutime() - ti;
    4806        5175 :     if (do_benchmark) {
    4807           0 :         av_log(NULL, AV_LOG_INFO, "bench: utime=%0.3fs\n", ti / 1000000.0);
    4808             :     }
    4809        5175 :     av_log(NULL, AV_LOG_DEBUG, "%"PRIu64" frames successfully decoded, %"PRIu64" decoding errors\n",
    4810             :            decode_error_stat[0], decode_error_stat[1]);
    4811        5175 :     if ((decode_error_stat[0] + decode_error_stat[1]) * max_error_rate < decode_error_stat[1])
    4812           0 :         exit_program(69);
    4813             : 
    4814        5175 :     exit_program(received_nb_signals ? 255 : main_return_code);
    4815             :     return main_return_code;
    4816             : }

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