LCOV - code coverage report
Current view: top level - fftools - ffmpeg.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 1914 2705 70.8 %
Date: 2017-10-22 09:09:27 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         335 : static void sub2video_push_ref(InputStream *ist, int64_t pts)
     220             : {
     221         335 :     AVFrame *frame = ist->sub2video.frame;
     222             :     int i;
     223             : 
     224             :     av_assert1(frame->data[0]);
     225         335 :     ist->sub2video.last_pts = frame->pts = pts;
     226         670 :     for (i = 0; i < ist->nb_filters; i++)
     227         335 :         av_buffersrc_add_frame_flags(ist->filters[i]->filter, frame,
     228             :                                      AV_BUFFERSRC_FLAG_KEEP_REF |
     229             :                                      AV_BUFFERSRC_FLAG_PUSH);
     230         335 : }
     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      385737 : static void sub2video_heartbeat(InputStream *ist, int64_t pts)
     267             : {
     268      385737 :     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      809395 :     for (i = 0; i < infile->nb_streams; i++) {
     277      423658 :         InputStream *ist2 = input_streams[infile->ist_index + i];
     278      423658 :         if (!ist2->sub2video.frame)
     279      422769 :             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         245 :             sub2video_push_ref(ist2, pts2);
     292             :     }
     293      385737 : }
     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       10753 : static void term_exit_sigsafe(void)
     308             : {
     309             : #if HAVE_TERMIOS_H
     310       10753 :     if(restore_tty)
     311           0 :         tcsetattr (0, TCSANOW, &oldtty);
     312             : #endif
     313       10753 : }
     314             : 
     315       10753 : void term_exit(void)
     316             : {
     317       10753 :     av_log(NULL, AV_LOG_QUIET, "%s", "");
     318       10753 :     term_exit_sigsafe();
     319       10753 : }
     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        5376 : void term_init(void)
     374             : {
     375             : #if HAVE_TERMIOS_H
     376        5376 :     if (!run_as_daemon && stdin_interaction) {
     377             :         struct termios tty;
     378          15 :         if (tcgetattr (0, &tty) == 0) {
     379           0 :             oldtty = tty;
     380           0 :             restore_tty = 1;
     381             : 
     382           0 :             tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
     383             :                              |INLCR|IGNCR|ICRNL|IXON);
     384           0 :             tty.c_oflag |= OPOST;
     385           0 :             tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
     386           0 :             tty.c_cflag &= ~(CSIZE|PARENB);
     387           0 :             tty.c_cflag |= CS8;
     388           0 :             tty.c_cc[VMIN] = 1;
     389           0 :             tty.c_cc[VTIME] = 0;
     390             : 
     391           0 :             tcsetattr (0, TCSANOW, &tty);
     392             :         }
     393          15 :         signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
     394             :     }
     395             : #endif
     396             : 
     397        5376 :     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
     398        5376 :     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
     399             : #ifdef SIGXCPU
     400        5376 :     signal(SIGXCPU, sigterm_handler);
     401             : #endif
     402             : #if HAVE_SETCONSOLECTRLHANDLER
     403             :     SetConsoleCtrlHandler((PHANDLER_ROUTINE) CtrlHandler, TRUE);
     404             : #endif
     405        5376 : }
     406             : 
     407             : /* read a key without blocking */
     408          41 : static int read_key(void)
     409             : {
     410             :     unsigned char ch;
     411             : #if HAVE_TERMIOS_H
     412          41 :     int n = 1;
     413             :     struct timeval tv;
     414             :     fd_set rfds;
     415             : 
     416          41 :     FD_ZERO(&rfds);
     417          41 :     FD_SET(0, &rfds);
     418          41 :     tv.tv_sec = 0;
     419          41 :     tv.tv_usec = 0;
     420          41 :     n = select(1, &rfds, NULL, NULL, &tv);
     421          41 :     if (n > 0) {
     422          41 :         n = read(0, &ch, 1);
     423          41 :         if (n == 1)
     424           0 :             return ch;
     425             : 
     426          41 :         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           0 :     return -1;
     457             : }
     458             : 
     459      544118 : static int decode_interrupt_cb(void *ctx)
     460             : {
     461      544118 :     return received_nb_signals > atomic_load(&transcode_init_done);
     462             : }
     463             : 
     464             : const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
     465             : 
     466        5377 : static void ffmpeg_cleanup(int ret)
     467             : {
     468             :     int i, j;
     469             : 
     470        5377 :     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       10639 :     for (i = 0; i < nb_filtergraphs; i++) {
     476        5262 :         FilterGraph *fg = filtergraphs[i];
     477        5262 :         avfilter_graph_free(&fg->graph);
     478       10523 :         for (j = 0; j < fg->nb_inputs; j++) {
     479       10522 :             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        5261 :             av_fifo_freep(&fg->inputs[j]->frame_queue);
     486        5261 :             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        5261 :             av_buffer_unref(&fg->inputs[j]->hw_frames_ctx);
     496        5261 :             av_freep(&fg->inputs[j]->name);
     497        5261 :             av_freep(&fg->inputs[j]);
     498             :         }
     499        5262 :         av_freep(&fg->inputs);
     500       10526 :         for (j = 0; j < fg->nb_outputs; j++) {
     501        5264 :             av_freep(&fg->outputs[j]->name);
     502        5264 :             av_freep(&fg->outputs[j]->formats);
     503        5264 :             av_freep(&fg->outputs[j]->channel_layouts);
     504        5264 :             av_freep(&fg->outputs[j]->sample_rates);
     505        5264 :             av_freep(&fg->outputs[j]);
     506             :         }
     507        5262 :         av_freep(&fg->outputs);
     508        5262 :         av_freep(&fg->graph_desc);
     509             : 
     510        5262 :         av_freep(&filtergraphs[i]);
     511             :     }
     512        5377 :     av_freep(&filtergraphs);
     513             : 
     514        5377 :     av_freep(&subtitle_out);
     515             : 
     516             :     /* close files */
     517       10754 :     for (i = 0; i < nb_output_files; i++) {
     518        5377 :         OutputFile *of = output_files[i];
     519             :         AVFormatContext *s;
     520        5377 :         if (!of)
     521           0 :             continue;
     522        5377 :         s = of->ctx;
     523        5377 :         if (s && s->oformat && !(s->oformat->flags & AVFMT_NOFILE))
     524        5332 :             avio_closep(&s->pb);
     525        5377 :         avformat_free_context(s);
     526        5377 :         av_dict_free(&of->opts);
     527             : 
     528        5377 :         av_freep(&output_files[i]);
     529             :     }
     530       10891 :     for (i = 0; i < nb_output_streams; i++) {
     531        5514 :         OutputStream *ost = output_streams[i];
     532             : 
     533        5514 :         if (!ost)
     534           0 :             continue;
     535             : 
     536        5557 :         for (j = 0; j < ost->nb_bitstream_filters; j++)
     537          43 :             av_bsf_free(&ost->bsf_ctx[j]);
     538        5514 :         av_freep(&ost->bsf_ctx);
     539             : 
     540        5514 :         av_frame_free(&ost->filtered_frame);
     541        5514 :         av_frame_free(&ost->last_frame);
     542        5514 :         av_dict_free(&ost->encoder_opts);
     543             : 
     544        5514 :         av_parser_close(ost->parser);
     545        5514 :         avcodec_free_context(&ost->parser_avctx);
     546             : 
     547        5514 :         av_freep(&ost->forced_keyframes);
     548        5514 :         av_expr_free(ost->forced_keyframes_pexpr);
     549        5514 :         av_freep(&ost->avfilter);
     550        5514 :         av_freep(&ost->logfile_prefix);
     551             : 
     552        5514 :         av_freep(&ost->audio_channels_map);
     553        5514 :         ost->audio_channels_mapped = 0;
     554             : 
     555        5514 :         av_dict_free(&ost->sws_dict);
     556             : 
     557        5514 :         avcodec_free_context(&ost->enc_ctx);
     558        5514 :         avcodec_parameters_free(&ost->ref_par);
     559             : 
     560        5514 :         if (ost->muxing_queue) {
     561       11028 :             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        5514 :             av_fifo_freep(&ost->muxing_queue);
     567             :         }
     568             : 
     569        5514 :         av_freep(&output_streams[i]);
     570             :     }
     571             : #if HAVE_PTHREADS
     572        5377 :     free_input_threads();
     573             : #endif
     574       10801 :     for (i = 0; i < nb_input_files; i++) {
     575        5424 :         avformat_close_input(&input_files[i]->ctx);
     576        5424 :         av_freep(&input_files[i]);
     577             :     }
     578       11106 :     for (i = 0; i < nb_input_streams; i++) {
     579        5729 :         InputStream *ist = input_streams[i];
     580             : 
     581        5729 :         av_frame_free(&ist->decoded_frame);
     582        5729 :         av_frame_free(&ist->filter_frame);
     583        5729 :         av_dict_free(&ist->decoder_opts);
     584        5729 :         avsubtitle_free(&ist->prev_sub.subtitle);
     585        5729 :         av_frame_free(&ist->sub2video.frame);
     586        5729 :         av_freep(&ist->filters);
     587        5729 :         av_freep(&ist->hwaccel_device);
     588        5729 :         av_freep(&ist->dts_buffer);
     589             : 
     590        5729 :         avcodec_free_context(&ist->dec_ctx);
     591             : 
     592        5729 :         av_freep(&input_streams[i]);
     593             :     }
     594             : 
     595        5377 :     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        5377 :     av_freep(&vstats_filename);
     602             : 
     603        5377 :     av_freep(&input_streams);
     604        5377 :     av_freep(&input_files);
     605        5377 :     av_freep(&output_streams);
     606        5377 :     av_freep(&output_files);
     607             : 
     608        5377 :     uninit_opts();
     609             : 
     610        5377 :     avformat_network_deinit();
     611             : 
     612        5377 :     if (received_sigterm) {
     613           0 :         av_log(NULL, AV_LOG_INFO, "Exiting normally, received signal %d.\n",
     614             :                (int) received_sigterm);
     615        5377 :     } else if (ret && atomic_load(&transcode_init_done)) {
     616           0 :         av_log(NULL, AV_LOG_INFO, "Conversion failed!\n");
     617             :     }
     618        5377 :     term_exit();
     619        5377 :     ffmpeg_exited = 1;
     620        5377 : }
     621             : 
     622        5424 : void remove_avoptions(AVDictionary **a, AVDictionary *b)
     623             : {
     624        5424 :     AVDictionaryEntry *t = NULL;
     625             : 
     626       27916 :     while ((t = av_dict_get(b, "", t, AV_DICT_IGNORE_SUFFIX))) {
     627       17068 :         av_dict_set(a, t->key, NULL, AV_DICT_MATCH_CASE);
     628             :     }
     629        5424 : }
     630             : 
     631       16005 : void assert_avoptions(AVDictionary *m)
     632             : {
     633             :     AVDictionaryEntry *t;
     634       16005 :     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       16005 : }
     639             : 
     640           0 : static void abort_codec_experimental(AVCodec *c, int encoder)
     641             : {
     642           0 :     exit_program(1);
     643             : }
     644             : 
     645     2366299 : static void update_benchmark(const char *fmt, ...)
     646             : {
     647     2366299 :     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     2366299 : }
     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      414640 : static void write_packet(OutputFile *of, AVPacket *pkt, OutputStream *ost, int unqueue)
     672             : {
     673      414640 :     AVFormatContext *s = of->ctx;
     674      414640 :     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      414640 :     if (!(st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && ost->encoding_needed) && !unqueue) {
     686      318916 :         if (ost->frame_number >= ost->max_frames) {
     687         313 :             av_packet_unref(pkt);
     688         313 :             return;
     689             :         }
     690      318603 :         ost->frame_number++;
     691             :     }
     692             : 
     693      414327 :     if (!of->header_written) {
     694         274 :         AVPacket tmp_pkt = {0};
     695             :         /* the muxer is not initialized yet, buffer the packet */
     696         274 :         if (!av_fifo_space(ost->muxing_queue)) {
     697          16 :             int new_size = FFMIN(2 * av_fifo_size(ost->muxing_queue),
     698             :                                  ost->max_muxing_queue_size);
     699          16 :             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          16 :             ret = av_fifo_realloc2(ost->muxing_queue, new_size);
     706          16 :             if (ret < 0)
     707           0 :                 exit_program(1);
     708             :         }
     709         274 :         ret = av_packet_ref(&tmp_pkt, pkt);
     710         274 :         if (ret < 0)
     711           0 :             exit_program(1);
     712         274 :         av_fifo_generic_write(ost->muxing_queue, &tmp_pkt, sizeof(tmp_pkt), NULL);
     713         274 :         av_packet_unref(pkt);
     714         274 :         return;
     715             :     }
     716             : 
     717      804785 :     if ((st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && video_sync_method == VSYNC_DROP) ||
     718      699927 :         (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO && audio_sync_method < 0))
     719       23321 :         pkt->pts = pkt->dts = AV_NOPTS_VALUE;
     720             : 
     721      414053 :     if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
     722             :         int i;
     723      103736 :         uint8_t *sd = av_packet_get_side_data(pkt, AV_PKT_DATA_QUALITY_STATS,
     724             :                                               NULL);
     725      103736 :         ost->quality = sd ? AV_RL32(sd) : -1;
     726      103736 :         ost->pict_type = sd ? sd[4] : AV_PICTURE_TYPE_NONE;
     727             : 
     728      518680 :         for (i = 0; i<FF_ARRAY_ELEMS(ost->error); i++) {
     729      414944 :             if (sd && i < sd[5])
     730           0 :                 ost->error[i] = AV_RL64(sd + 8 + 8*i);
     731             :             else
     732      414944 :                 ost->error[i] = -1;
     733             :         }
     734             : 
     735      103736 :         if (ost->frame_rate.num && ost->is_cfr) {
     736        9103 :             if (pkt->duration > 0)
     737           0 :                 av_log(NULL, AV_LOG_WARNING, "Overriding packet duration by frame rate, this should not happen\n");
     738        9103 :             pkt->duration = av_rescale_q(1, av_inv_q(ost->frame_rate),
     739             :                                          ost->mux_timebase);
     740             :         }
     741             :     }
     742             : 
     743      414053 :     av_packet_rescale_ts(pkt, ost->mux_timebase, ost->st->time_base);
     744             : 
     745      414053 :     if (!(s->oformat->flags & AVFMT_NOTIMESTAMPS)) {
     746      332681 :         if (pkt->dts != AV_NOPTS_VALUE &&
     747      308841 :             pkt->pts != AV_NOPTS_VALUE &&
     748      154161 :             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      355394 :         if ((st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO || st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) &&
     758      331465 :             pkt->dts != AV_NOPTS_VALUE &&
     759      308144 :             !(st->codecpar->codec_id == AV_CODEC_ID_VP9 && ost->stream_copy) &&
     760      154019 :             ost->last_mux_dts != AV_NOPTS_VALUE) {
     761      150025 :             int64_t max = ost->last_mux_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT);
     762      150025 :             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      414053 :     ost->last_mux_dts = pkt->dts;
     781             : 
     782      414053 :     ost->data_size += pkt->size;
     783      414053 :     ost->packets_written++;
     784             : 
     785      414053 :     pkt->stream_index = ost->index;
     786             : 
     787      414053 :     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      414053 :     ret = av_interleaved_write_frame(s, pkt);
     798      414053 :     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      414053 :     av_packet_unref(pkt);
     804             : }
     805             : 
     806        5276 : static void close_output_stream(OutputStream *ost)
     807             : {
     808        5276 :     OutputFile *of = output_files[ost->file_index];
     809             : 
     810        5276 :     ost->finished |= ENCODER_FINISHED;
     811        5276 :     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        5276 : }
     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      418655 : static void output_packet(OutputFile *of, AVPacket *pkt,
     829             :                           OutputStream *ost, int eof)
     830             : {
     831      418655 :     int ret = 0;
     832             : 
     833             :     /* apply the output bitstream filters, if any */
     834      418655 :     if (ost->nb_bitstream_filters) {
     835             :         int idx;
     836             : 
     837        4756 :         ret = av_bsf_send_packet(ost->bsf_ctx[0], eof ? NULL : pkt);
     838        4756 :         if (ret < 0)
     839           0 :             goto finish;
     840             : 
     841        4756 :         eof = 0;
     842        4756 :         idx = 1;
     843       19016 :         while (idx) {
     844             :             /* get a packet from the previous filter up the chain */
     845        9508 :             ret = av_bsf_receive_packet(ost->bsf_ctx[idx - 1], pkt);
     846        9508 :             if (ret == AVERROR(EAGAIN)) {
     847        4752 :                 ret = 0;
     848        4752 :                 idx--;
     849        4752 :                 continue;
     850        4756 :             } else if (ret == AVERROR_EOF) {
     851           3 :                 eof = 1;
     852        4753 :             } else if (ret < 0)
     853           1 :                 goto finish;
     854             : 
     855             :             /* send it to the next filter down the chain or to the muxer */
     856        4755 :             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        4755 :             } else if (eof)
     863           3 :                 goto finish;
     864             :             else
     865        4752 :                 write_packet(of, pkt, ost, 0);
     866             :         }
     867      413899 :     } else if (!eof)
     868      409614 :         write_packet(of, pkt, ost, 0);
     869             : 
     870      422940 : finish:
     871      418655 :     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      418655 : }
     878             : 
     879      393664 : static int check_recording_time(OutputStream *ost)
     880             : {
     881      393664 :     OutputFile *of = output_files[ost->file_index];
     882             : 
     883      399809 :     if (of->recording_time != INT64_MAX &&
     884        6145 :         av_compare_ts(ost->sync_opts - ost->first_pts, ost->enc_ctx->time_base, of->recording_time,
     885        6145 :                       AV_TIME_BASE_Q) >= 0) {
     886           1 :         close_output_stream(ost);
     887           1 :         return 0;
     888             :     }
     889      393663 :     return 1;
     890             : }
     891             : 
     892      297621 : static void do_audio_out(OutputFile *of, OutputStream *ost,
     893             :                          AVFrame *frame)
     894             : {
     895      297621 :     AVCodecContext *enc = ost->enc_ctx;
     896             :     AVPacket pkt;
     897             :     int ret;
     898             : 
     899      297621 :     av_init_packet(&pkt);
     900      297621 :     pkt.data = NULL;
     901      297621 :     pkt.size = 0;
     902             : 
     903      297621 :     if (!check_recording_time(ost))
     904           0 :         return;
     905             : 
     906      297621 :     if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
     907           0 :         frame->pts = ost->sync_opts;
     908      297621 :     ost->sync_opts = frame->pts + frame->nb_samples;
     909      297621 :     ost->samples_encoded += frame->nb_samples;
     910      297621 :     ost->frames_encoded++;
     911             : 
     912      297621 :     av_assert0(pkt.size || !pkt.data);
     913      297621 :     update_benchmark(NULL);
     914      297621 :     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      297621 :     ret = avcodec_send_frame(enc, frame);
     922      297621 :     if (ret < 0)
     923           0 :         goto error;
     924             : 
     925             :     while (1) {
     926      291464 :         ret = avcodec_receive_packet(enc, &pkt);
     927      589085 :         if (ret == AVERROR(EAGAIN))
     928      297621 :             break;
     929      291464 :         if (ret < 0)
     930           0 :             goto error;
     931             : 
     932      291464 :         update_benchmark("encode_audio %d.%d", ost->file_index, ost->index);
     933             : 
     934      291464 :         av_packet_rescale_ts(&pkt, enc->time_base, ost->mux_timebase);
     935             : 
     936      291464 :         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      291464 :         output_packet(of, &pkt, ost, 0);
     944             :     }
     945             : 
     946      297621 :     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       97712 : 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       97712 :     AVCodecContext *enc = ost->enc_ctx;
    1043       97712 :     AVCodecParameters *mux_par = ost->st->codecpar;
    1044             :     AVRational frame_rate;
    1045             :     int nb_frames, nb0_frames, i;
    1046             :     double delta, delta0;
    1047       97712 :     double duration = 0;
    1048       97712 :     int frame_size = 0;
    1049       97712 :     InputStream *ist = NULL;
    1050       97712 :     AVFilterContext *filter = ost->filter->filter;
    1051             : 
    1052       97712 :     if (ost->source_index >= 0)
    1053       96492 :         ist = input_streams[ost->source_index];
    1054             : 
    1055       97712 :     frame_rate = av_buffersink_get_frame_rate(filter);
    1056       97712 :     if (frame_rate.num > 0 && frame_rate.den > 0)
    1057       97712 :         duration = 1/(av_q2d(frame_rate) * av_q2d(enc->time_base));
    1058             : 
    1059       97712 :     if(ist && ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE && ost->frame_rate.num)
    1060       62071 :         duration = FFMIN(duration, 1/(av_q2d(ost->frame_rate) * av_q2d(enc->time_base)));
    1061             : 
    1062      195327 :     if (!ost->filters_script &&
    1063      189243 :         !ost->filters &&
    1064       89391 :         next_picture &&
    1065       88200 :         ist &&
    1066       88200 :         lrintf(next_picture->pkt_duration * av_q2d(ist->st->time_base) / av_q2d(enc->time_base)) > 0) {
    1067       83424 :         duration = lrintf(next_picture->pkt_duration * av_q2d(ist->st->time_base) / av_q2d(enc->time_base));
    1068             :     }
    1069             : 
    1070       97712 :     if (!next_picture) {
    1071             :         //end, flushing
    1072        2299 :         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       95413 :         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       95413 :         delta  = delta0 + duration;
    1078             : 
    1079             :         /* by default, we output a single frame */
    1080       95413 :         nb0_frames = 0; // tracks the number of times the PREVIOUS frame should be duplicated, mostly for variable framerate (VFR)
    1081       95413 :         nb_frames = 1;
    1082             : 
    1083       95413 :         format_video_sync = video_sync_method;
    1084       95413 :         if (format_video_sync == VSYNC_AUTO) {
    1085       53672 :             if(!strcmp(of->ctx->oformat->name, "avi")) {
    1086       12500 :                 format_video_sync = VSYNC_VFR;
    1087             :             } else
    1088       41172 :                 format_video_sync = (of->ctx->oformat->flags & AVFMT_VARIABLE_FPS) ? ((of->ctx->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH : VSYNC_VFR) : VSYNC_CFR;
    1089       53672 :             if (   ist
    1090       52481 :                 && format_video_sync == VSYNC_CFR
    1091        8753 :                 && input_files[ist->file_index]->ctx->nb_streams == 1
    1092        7708 :                 && input_files[ist->file_index]->input_ts_offset == 0) {
    1093        7708 :                 format_video_sync = VSYNC_VSCFR;
    1094             :             }
    1095       53672 :             if (format_video_sync == VSYNC_CFR && copy_ts) {
    1096           0 :                 format_video_sync = VSYNC_VSCFR;
    1097             :             }
    1098             :         }
    1099       95413 :         ost->is_cfr = (format_video_sync == VSYNC_CFR || format_video_sync == VSYNC_VSCFR);
    1100             : 
    1101       95413 :         if (delta0 < 0 &&
    1102       10658 :             delta > 0 &&
    1103       10256 :             format_video_sync != VSYNC_PASSTHROUGH &&
    1104             :             format_video_sync != VSYNC_DROP) {
    1105        7488 :             if (delta0 < -0.6) {
    1106         437 :                 av_log(NULL, AV_LOG_WARNING, "Past duration %f too large\n", -delta0);
    1107             :             } else
    1108        7051 :                 av_log(NULL, AV_LOG_DEBUG, "Clipping frame in rate conversion by %f\n", -delta0);
    1109        7488 :             sync_ipts = ost->sync_opts;
    1110        7488 :             duration += delta0;
    1111        7488 :             delta0 = 0;
    1112             :         }
    1113             : 
    1114       95413 :         switch (format_video_sync) {
    1115        7708 :         case VSYNC_VSCFR:
    1116        7708 :             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        8892 :             if (frame_drop_threshold && delta < frame_drop_threshold && ost->frame_number) {
    1125           0 :                 nb_frames = 0;
    1126        8892 :             } else if (delta < -1.1)
    1127           0 :                 nb_frames = 0;
    1128        8892 :             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        8892 :             break;
    1134       44902 :         case VSYNC_VFR:
    1135       44902 :             if (delta <= -0.6)
    1136         171 :                 nb_frames = 0;
    1137       44731 :             else if (delta > 0.6)
    1138       44143 :                 ost->sync_opts = lrint(sync_ipts);
    1139       44902 :             break;
    1140       41619 :         case VSYNC_DROP:
    1141             :         case VSYNC_PASSTHROUGH:
    1142       41619 :             ost->sync_opts = lrint(sync_ipts);
    1143       41619 :             break;
    1144           0 :         default:
    1145           0 :             av_assert0(0);
    1146             :         }
    1147             :     }
    1148             : 
    1149       97712 :     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
    1150       97712 :     nb0_frames = FFMIN(nb0_frames, nb_frames);
    1151             : 
    1152       97712 :     memmove(ost->last_nb0_frames + 1,
    1153       97712 :             ost->last_nb0_frames,
    1154             :             sizeof(ost->last_nb0_frames[0]) * (FF_ARRAY_ELEMS(ost->last_nb0_frames) - 1));
    1155       97712 :     ost->last_nb0_frames[0] = nb0_frames;
    1156             : 
    1157       97712 :     if (nb0_frames == 0 && ost->last_dropped) {
    1158         171 :         nb_frames_drop++;
    1159         342 :         av_log(NULL, AV_LOG_VERBOSE,
    1160             :                "*** dropping frame %d from stream %d at ts %"PRId64"\n",
    1161         342 :                ost->frame_number, ost->st->index, ost->last_frame->pts);
    1162             :     }
    1163       97712 :     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       97712 :     ost->last_dropped = nb_frames == nb0_frames && next_picture;
    1177             : 
    1178             :   /* duplicates frame if needed */
    1179      193162 :   for (i = 0; i < nb_frames; i++) {
    1180             :     AVFrame *in_picture;
    1181       95451 :     av_init_packet(&pkt);
    1182       95451 :     pkt.data = NULL;
    1183       95451 :     pkt.size = 0;
    1184             : 
    1185       95451 :     if (i < nb0_frames && ost->last_frame) {
    1186          69 :         in_picture = ost->last_frame;
    1187             :     } else
    1188       95382 :         in_picture = next_picture;
    1189             : 
    1190       95451 :     if (!in_picture)
    1191           0 :         return;
    1192             : 
    1193       95451 :     in_picture->pts = ost->sync_opts;
    1194             : 
    1195             : #if 1
    1196       95451 :     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             :     if (of->ctx->oformat->flags & AVFMT_RAWPICTURE &&
    1204             :         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             :         if (in_picture->interlaced_frame)
    1209             :             mux_par->field_order = in_picture->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
    1210             :         else
    1211             :             mux_par->field_order = AV_FIELD_PROGRESSIVE;
    1212             :         pkt.data   = (uint8_t *)in_picture;
    1213             :         pkt.size   =  sizeof(AVPicture);
    1214             :         pkt.pts    = av_rescale_q(in_picture->pts, enc->time_base, ost->mux_timebase);
    1215             :         pkt.flags |= AV_PKT_FLAG_KEY;
    1216             : 
    1217             :         output_packet(of, &pkt, ost, 0);
    1218             :     } else
    1219             : #endif
    1220             :     {
    1221       95450 :         int forced_keyframe = 0;
    1222             :         double pts_time;
    1223             : 
    1224       96330 :         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       95450 :         if (in_picture->interlaced_frame) {
    1229        6337 :             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        6337 :                 mux_par->field_order = in_picture->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
    1233             :         } else
    1234       89113 :             mux_par->field_order = AV_FIELD_PROGRESSIVE;
    1235             : 
    1236       95450 :         in_picture->quality = enc->global_quality;
    1237       95450 :         in_picture->pict_type = 0;
    1238             : 
    1239      190900 :         pts_time = in_picture->pts != AV_NOPTS_VALUE ?
    1240       95450 :             in_picture->pts * av_q2d(enc->time_base) : NAN;
    1241       95489 :         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       95448 :         } 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       95448 :         } 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       95450 :         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       95450 :         update_benchmark(NULL);
    1279       95450 :         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       95450 :         ost->frames_encoded++;
    1287             : 
    1288       95450 :         ret = avcodec_send_frame(enc, in_picture);
    1289       95450 :         if (ret < 0)
    1290           0 :             goto error;
    1291             : 
    1292             :         while (1) {
    1293      286006 :             ret = avcodec_receive_packet(enc, &pkt);
    1294      190728 :             update_benchmark("encode_video %d.%d", ost->file_index, ost->index);
    1295      190728 :             if (ret == AVERROR(EAGAIN))
    1296       95450 :                 break;
    1297       95278 :             if (ret < 0)
    1298           0 :                 goto error;
    1299             : 
    1300       95278 :             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       95278 :             if (pkt.pts == AV_NOPTS_VALUE && !(enc->codec->capabilities & AV_CODEC_CAP_DELAY))
    1308           0 :                 pkt.pts = ost->sync_opts;
    1309             : 
    1310       95278 :             av_packet_rescale_ts(&pkt, enc->time_base, ost->mux_timebase);
    1311             : 
    1312       95278 :             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       95278 :             frame_size = pkt.size;
    1320       95278 :             output_packet(of, &pkt, ost, 0);
    1321             : 
    1322             :             /* if two pass, output log */
    1323       95278 :             if (ost->logfile && enc->stats_out) {
    1324           0 :                 fprintf(ost->logfile, "%s", enc->stats_out);
    1325             :             }
    1326             :         }
    1327             :     }
    1328       95450 :     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       95450 :     ost->frame_number++;
    1335             : 
    1336       95450 :     if (vstats_filename && frame_size)
    1337           0 :         do_video_stats(ost, frame_size);
    1338             :   }
    1339             : 
    1340       97711 :     if (!ost->last_frame)
    1341        4285 :         ost->last_frame = av_frame_alloc();
    1342       97711 :     av_frame_unref(ost->last_frame);
    1343       97711 :     if (next_picture && ost->last_frame)
    1344       95412 :         av_frame_ref(ost->last_frame, next_picture);
    1345             :     else
    1346        2299 :         av_frame_free(&ost->last_frame);
    1347             : 
    1348       97711 :     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         237 : static void finish_output_stream(OutputStream *ost)
    1405             : {
    1406         237 :     OutputFile *of = output_files[ost->file_index];
    1407             :     int i;
    1408             : 
    1409         237 :     ost->finished = ENCODER_FINISHED | MUXER_FINISHED;
    1410             : 
    1411         237 :     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         237 : }
    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      403298 : static int reap_filters(int flush)
    1424             : {
    1425      403298 :     AVFrame *filtered_frame = NULL;
    1426             :     int i;
    1427             : 
    1428             :     /* Reap all buffers present in the buffer sinks */
    1429      820660 :     for (i = 0; i < nb_output_streams; i++) {
    1430      417362 :         OutputStream *ost = output_streams[i];
    1431      417362 :         OutputFile    *of = output_files[ost->file_index];
    1432             :         AVFilterContext *filter;
    1433      417362 :         AVCodecContext *enc = ost->enc_ctx;
    1434      417362 :         int ret = 0;
    1435             : 
    1436      417362 :         if (!ost->filter || !ost->filter->graph->graph)
    1437       42434 :             continue;
    1438      374928 :         filter = ost->filter->filter;
    1439             : 
    1440      374928 :         if (!ost->initialized) {
    1441        5242 :             char error[1024] = "";
    1442        5242 :             ret = init_output_stream(ost, error, sizeof(error));
    1443        5242 :             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      374928 :         if (!ost->filtered_frame && !(ost->filtered_frame = av_frame_alloc())) {
    1451           0 :             return AVERROR(ENOMEM);
    1452             :         }
    1453      374928 :         filtered_frame = ost->filtered_frame;
    1454             : 
    1455      393034 :         while (1) {
    1456      767962 :             double float_pts = AV_NOPTS_VALUE; // this is identical to filtered_frame.pts but with higher precision
    1457      767962 :             ret = av_buffersink_get_frame_flags(filter, filtered_frame,
    1458             :                                                AV_BUFFERSINK_FLAG_NO_REQUEST);
    1459      767962 :             if (ret < 0) {
    1460      374928 :                 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      374928 :                 } else if (flush && ret == AVERROR_EOF) {
    1464        3404 :                     if (av_buffersink_get_type(filter) == AVMEDIA_TYPE_VIDEO)
    1465        2299 :                         do_video_out(of, ost, NULL, AV_NOPTS_VALUE);
    1466             :                 }
    1467      374928 :                 break;
    1468             :             }
    1469      393034 :             if (ost->finished) {
    1470           0 :                 av_frame_unref(filtered_frame);
    1471           0 :                 continue;
    1472             :             }
    1473      393034 :             if (filtered_frame->pts != AV_NOPTS_VALUE) {
    1474      393034 :                 int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time;
    1475      393034 :                 AVRational filter_tb = av_buffersink_get_time_base(filter);
    1476      393034 :                 AVRational tb = enc->time_base;
    1477      393034 :                 int extra_bits = av_clip(29 - av_log2(tb.den), 0, 16);
    1478             : 
    1479      393034 :                 tb.den <<= extra_bits;
    1480      393034 :                 float_pts =
    1481      786068 :                     av_rescale_q(filtered_frame->pts, filter_tb, tb) -
    1482      393034 :                     av_rescale_q(start_time, AV_TIME_BASE_Q, tb);
    1483      393034 :                 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      393034 :                 float_pts += FFSIGN(float_pts) * 1.0 / (1<<17);
    1486             : 
    1487      393034 :                 filtered_frame->pts =
    1488      786068 :                     av_rescale_q(filtered_frame->pts, filter_tb, enc->time_base) -
    1489      393034 :                     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      393034 :             switch (av_buffersink_get_type(filter)) {
    1495       95413 :             case AVMEDIA_TYPE_VIDEO:
    1496       95413 :                 if (!ost->frame_aspect_ratio.num)
    1497       95413 :                     enc->sample_aspect_ratio = filtered_frame->sample_aspect_ratio;
    1498             : 
    1499       95413 :                 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       95413 :                 do_video_out(of, ost, filtered_frame, float_pts);
    1507       95413 :                 break;
    1508      297621 :             case AVMEDIA_TYPE_AUDIO:
    1509      595242 :                 if (!(enc->codec->capabilities & AV_CODEC_CAP_PARAM_CHANGE) &&
    1510      297621 :                     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      297621 :                 do_audio_out(of, ost, filtered_frame);
    1516      297621 :                 break;
    1517           0 :             default:
    1518             :                 // TODO support subtitle filters
    1519           0 :                 av_assert0(0);
    1520             :             }
    1521             : 
    1522      393034 :             av_frame_unref(filtered_frame);
    1523             :         }
    1524             :     }
    1525             : 
    1526      403298 :     return 0;
    1527             : }
    1528             : 
    1529        5376 : static void print_final_stats(int64_t total_size)
    1530             : {
    1531        5376 :     uint64_t video_size = 0, audio_size = 0, extra_size = 0, other_size = 0;
    1532        5376 :     uint64_t subtitle_size = 0;
    1533        5376 :     uint64_t data_size = 0;
    1534        5376 :     float percent = -1.0;
    1535             :     int i, j;
    1536        5376 :     int pass1_used = 1;
    1537             : 
    1538       10890 :     for (i = 0; i < nb_output_streams; i++) {
    1539        5514 :         OutputStream *ost = output_streams[i];
    1540        5514 :         switch (ost->enc_ctx->codec_type) {
    1541        4318 :             case AVMEDIA_TYPE_VIDEO: video_size += ost->data_size; break;
    1542        1150 :             case AVMEDIA_TYPE_AUDIO: audio_size += ost->data_size; break;
    1543          35 :             case AVMEDIA_TYPE_SUBTITLE: subtitle_size += ost->data_size; break;
    1544          11 :             default:                 other_size += ost->data_size; break;
    1545             :         }
    1546        5514 :         extra_size += ost->enc_ctx->extradata_size;
    1547        5514 :         data_size  += ost->data_size;
    1548        5514 :         if (   (ost->enc_ctx->flags & (AV_CODEC_FLAG_PASS1 | AV_CODEC_FLAG_PASS2))
    1549             :             != AV_CODEC_FLAG_PASS1)
    1550        5514 :             pass1_used = 0;
    1551             :     }
    1552             : 
    1553        5376 :     if (data_size && total_size>0 && total_size >= data_size)
    1554        3673 :         percent = 100.0 * (total_size - data_size) / data_size;
    1555             : 
    1556        5376 :     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        5376 :     if (percent >= 0.0)
    1563        3673 :         av_log(NULL, AV_LOG_INFO, "%f%%", percent);
    1564             :     else
    1565        1703 :         av_log(NULL, AV_LOG_INFO, "unknown");
    1566        5376 :     av_log(NULL, AV_LOG_INFO, "\n");
    1567             : 
    1568             :     /* print verbose per-stream stats */
    1569       10800 :     for (i = 0; i < nb_input_files; i++) {
    1570        5424 :         InputFile *f = input_files[i];
    1571        5424 :         uint64_t total_packets = 0, total_size = 0;
    1572             : 
    1573        5424 :         av_log(NULL, AV_LOG_VERBOSE, "Input file #%d (%s):\n",
    1574        5424 :                i, f->ctx->filename);
    1575             : 
    1576       11153 :         for (j = 0; j < f->nb_streams; j++) {
    1577        5729 :             InputStream *ist = input_streams[f->ist_index + j];
    1578        5729 :             enum AVMediaType type = ist->dec_ctx->codec_type;
    1579             : 
    1580        5729 :             total_size    += ist->data_size;
    1581        5729 :             total_packets += ist->nb_packets;
    1582             : 
    1583        5729 :             av_log(NULL, AV_LOG_VERBOSE, "  Input stream #%d:%d (%s): ",
    1584             :                    i, j, media_type_string(type));
    1585        5729 :             av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" packets read (%"PRIu64" bytes); ",
    1586             :                    ist->nb_packets, ist->data_size);
    1587             : 
    1588        5729 :             if (ist->decoding_needed) {
    1589        5288 :                 av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" frames decoded",
    1590             :                        ist->frames_decoded);
    1591        5288 :                 if (type == AVMEDIA_TYPE_AUDIO)
    1592        1066 :                     av_log(NULL, AV_LOG_VERBOSE, " (%"PRIu64" samples)", ist->samples_decoded);
    1593        5288 :                 av_log(NULL, AV_LOG_VERBOSE, "; ");
    1594             :             }
    1595             : 
    1596        5729 :             av_log(NULL, AV_LOG_VERBOSE, "\n");
    1597             :         }
    1598             : 
    1599        5424 :         av_log(NULL, AV_LOG_VERBOSE, "  Total: %"PRIu64" packets (%"PRIu64" bytes) demuxed\n",
    1600             :                total_packets, total_size);
    1601             :     }
    1602             : 
    1603       10753 :     for (i = 0; i < nb_output_files; i++) {
    1604        5377 :         OutputFile *of = output_files[i];
    1605        5377 :         uint64_t total_packets = 0, total_size = 0;
    1606             : 
    1607        5377 :         av_log(NULL, AV_LOG_VERBOSE, "Output file #%d (%s):\n",
    1608        5377 :                i, of->ctx->filename);
    1609             : 
    1610       10891 :         for (j = 0; j < of->ctx->nb_streams; j++) {
    1611        5514 :             OutputStream *ost = output_streams[of->ost_index + j];
    1612        5514 :             enum AVMediaType type = ost->enc_ctx->codec_type;
    1613             : 
    1614        5514 :             total_size    += ost->data_size;
    1615        5514 :             total_packets += ost->packets_written;
    1616             : 
    1617        5514 :             av_log(NULL, AV_LOG_VERBOSE, "  Output stream #%d:%d (%s): ",
    1618             :                    i, j, media_type_string(type));
    1619        5514 :             if (ost->encoding_needed) {
    1620        5293 :                 av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" frames encoded",
    1621             :                        ost->frames_encoded);
    1622        5293 :                 if (type == AVMEDIA_TYPE_AUDIO)
    1623        1062 :                     av_log(NULL, AV_LOG_VERBOSE, " (%"PRIu64" samples)", ost->samples_encoded);
    1624        5293 :                 av_log(NULL, AV_LOG_VERBOSE, "; ");
    1625             :             }
    1626             : 
    1627        5514 :             av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" packets muxed (%"PRIu64" bytes); ",
    1628             :                    ost->packets_written, ost->data_size);
    1629             : 
    1630        5514 :             av_log(NULL, AV_LOG_VERBOSE, "\n");
    1631             :         }
    1632             : 
    1633        5377 :         av_log(NULL, AV_LOG_VERBOSE, "  Total: %"PRIu64" packets (%"PRIu64" bytes) muxed\n",
    1634             :                total_packets, total_size);
    1635             :     }
    1636        5376 :     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        5376 : }
    1645             : 
    1646     1302351 : 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     1302351 :     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     1302351 :     if (!print_stats && !is_last_report && !progress_avio)
    1665     2590650 :         return;
    1666             : 
    1667        8672 :     if (!is_last_report) {
    1668        3296 :         if (last_time == -1) {
    1669          21 :             last_time = cur_time;
    1670          21 :             return;
    1671             :         }
    1672        3275 :         if ((cur_time - last_time) < 500000)
    1673        3271 :             return;
    1674           4 :         last_time = cur_time;
    1675             :     }
    1676             : 
    1677        5380 :     t = (cur_time-timer_start) / 1000000.0;
    1678             : 
    1679             : 
    1680        5380 :     oc = output_files[0]->ctx;
    1681             : 
    1682        5380 :     total_size = avio_size(oc->pb);
    1683        5380 :     if (total_size <= 0) // FIXME improve avio_size() so it works with non seekable output too
    1684          48 :         total_size = avio_tell(oc->pb);
    1685             : 
    1686        5380 :     buf[0] = '\0';
    1687        5380 :     vid = 0;
    1688        5380 :     av_bprint_init(&buf_script, 0, 1);
    1689       10898 :     for (i = 0; i < nb_output_streams; i++) {
    1690        5518 :         float q = -1;
    1691        5518 :         ost = output_streams[i];
    1692        5518 :         enc = ost->enc_ctx;
    1693        5518 :         if (!ost->stream_copy)
    1694        5298 :             q = ost->quality / (float) FF_QP2LAMBDA;
    1695             : 
    1696        5518 :         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        5518 :         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
    1702             :             float fps;
    1703             : 
    1704        4312 :             frame_number = ost->frame_number;
    1705        4312 :             fps = t > 1 ? frame_number / t : 0;
    1706        4312 :             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        4312 :             av_bprintf(&buf_script, "frame=%d\n", frame_number);
    1709        4312 :             av_bprintf(&buf_script, "fps=%.1f\n", fps);
    1710        4312 :             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
    1711             :                        ost->file_index, ost->index, q);
    1712        4312 :             if (is_last_report)
    1713        4311 :                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
    1714        4312 :             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        4312 :             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        4312 :             vid = 1;
    1753             :         }
    1754             :         /* compute min output value */
    1755        5518 :         if (av_stream_get_end_pts(ost->st) != AV_NOPTS_VALUE)
    1756        5518 :             pts = FFMAX(pts, av_rescale_q(av_stream_get_end_pts(ost->st),
    1757             :                                           ost->st->time_base, AV_TIME_BASE_Q));
    1758        5518 :         if (is_last_report)
    1759        5514 :             nb_frames_drop += ost->last_dropped;
    1760             :     }
    1761             : 
    1762        5380 :     secs = FFABS(pts) / AV_TIME_BASE;
    1763        5380 :     us = FFABS(pts) % AV_TIME_BASE;
    1764        5380 :     mins = secs / 60;
    1765        5380 :     secs %= 60;
    1766        5380 :     hours = mins / 60;
    1767        5380 :     mins %= 60;
    1768             : 
    1769        5380 :     bitrate = pts && total_size >= 0 ? total_size * 8 / (pts / 1000.0) : -1;
    1770        5380 :     speed = t != 0.0 ? (double)pts / AV_TIME_BASE / t : -1;
    1771             : 
    1772        5380 :     if (total_size < 0) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
    1773             :                                  "size=N/A time=");
    1774        5332 :     else                snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
    1775             :                                  "size=%8.0fkB time=", total_size / 1024.0);
    1776        5380 :     if (pts < 0)
    1777           1 :         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "-");
    1778        5380 :     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
    1779             :              "%02d:%02d:%02d.%02d ", hours, mins, secs,
    1780        5380 :              (100 * us) / AV_TIME_BASE);
    1781             : 
    1782        5380 :     if (bitrate < 0) {
    1783          59 :         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),"bitrate=N/A");
    1784          59 :         av_bprintf(&buf_script, "bitrate=N/A\n");
    1785             :     }else{
    1786        5321 :         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),"bitrate=%6.1fkbits/s", bitrate);
    1787        5321 :         av_bprintf(&buf_script, "bitrate=%6.1fkbits/s\n", bitrate);
    1788             :     }
    1789             : 
    1790        5380 :     if (total_size < 0) av_bprintf(&buf_script, "total_size=N/A\n");
    1791        5332 :     else                av_bprintf(&buf_script, "total_size=%"PRId64"\n", total_size);
    1792        5380 :     av_bprintf(&buf_script, "out_time_ms=%"PRId64"\n", pts);
    1793        5380 :     av_bprintf(&buf_script, "out_time=%02d:%02d:%02d.%06d\n",
    1794             :                hours, mins, secs, us);
    1795             : 
    1796        5380 :     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        5380 :     av_bprintf(&buf_script, "dup_frames=%d\n", nb_frames_dup);
    1800        5380 :     av_bprintf(&buf_script, "drop_frames=%d\n", nb_frames_drop);
    1801             : 
    1802        5380 :     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        5379 :         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf)," speed=%4.3gx", speed);
    1807        5379 :         av_bprintf(&buf_script, "speed=%4.3gx\n", speed);
    1808             :     }
    1809             : 
    1810        5380 :     if (print_stats || is_last_report) {
    1811        5380 :         const char end = is_last_report ? '\n' : '\r';
    1812        5380 :         if (print_stats==1 && AV_LOG_INFO > av_log_get_level()) {
    1813           0 :             fprintf(stderr, "%s    %c", buf, end);
    1814             :         } else
    1815        5380 :             av_log(NULL, AV_LOG_INFO, "%s    %c", buf, end);
    1816             : 
    1817        5380 :     fflush(stderr);
    1818             :     }
    1819             : 
    1820        5380 :     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        5380 :     if (is_last_report)
    1835        5376 :         print_final_stats(total_size);
    1836             : }
    1837             : 
    1838        5376 : static void flush_encoders(void)
    1839             : {
    1840             :     int i, ret;
    1841             : 
    1842       10890 :     for (i = 0; i < nb_output_streams; i++) {
    1843        5514 :         OutputStream   *ost = output_streams[i];
    1844        5514 :         AVCodecContext *enc = ost->enc_ctx;
    1845        5514 :         OutputFile      *of = output_files[ost->file_index];
    1846             : 
    1847        5514 :         if (!ost->encoding_needed)
    1848         221 :             continue;
    1849             : 
    1850             :         // Try to enable encoding with no input frames.
    1851             :         // Maybe we should just let encoding fail instead.
    1852        5293 :         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        5293 :         if (enc->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
    1899         976 :             continue;
    1900             : #if FF_API_LAVF_FMT_RAWPICTURE
    1901             :         if (enc->codec_type == AVMEDIA_TYPE_VIDEO && (of->ctx->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == AV_CODEC_ID_RAWVIDEO)
    1902             :             continue;
    1903             : #endif
    1904             : 
    1905        4317 :         if (enc->codec_type != AVMEDIA_TYPE_VIDEO && enc->codec_type != AVMEDIA_TYPE_AUDIO)
    1906          29 :             continue;
    1907             : 
    1908         211 :         for (;;) {
    1909        4499 :             const char *desc = NULL;
    1910             :             AVPacket pkt;
    1911             :             int pkt_size;
    1912             : 
    1913        4499 :             switch (enc->codec_type) {
    1914         125 :             case AVMEDIA_TYPE_AUDIO:
    1915         125 :                 desc   = "audio";
    1916         125 :                 break;
    1917        4374 :             case AVMEDIA_TYPE_VIDEO:
    1918        4374 :                 desc   = "video";
    1919        4374 :                 break;
    1920           0 :             default:
    1921           0 :                 av_assert0(0);
    1922             :             }
    1923             : 
    1924        4499 :                 av_init_packet(&pkt);
    1925        4499 :                 pkt.data = NULL;
    1926        4499 :                 pkt.size = 0;
    1927             : 
    1928        4499 :                 update_benchmark(NULL);
    1929             : 
    1930        4499 :                 while ((ret = avcodec_receive_packet(enc, &pkt)) == AVERROR(EAGAIN)) {
    1931        4288 :                     ret = avcodec_send_frame(enc, NULL);
    1932        4288 :                     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        4499 :                 update_benchmark("flush_%s %d.%d", desc, ost->file_index, ost->index);
    1941        4499 :                 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        4499 :                 if (ost->logfile && enc->stats_out) {
    1948           0 :                     fprintf(ost->logfile, "%s", enc->stats_out);
    1949             :                 }
    1950        4499 :                 if (ret == AVERROR_EOF) {
    1951        4288 :                     output_packet(of, &pkt, ost, 1);
    1952        4288 :                     break;
    1953             :                 }
    1954         211 :                 if (ost->finished & MUXER_FINISHED) {
    1955           0 :                     av_packet_unref(&pkt);
    1956           0 :                     continue;
    1957             :                 }
    1958         211 :                 av_packet_rescale_ts(&pkt, enc->time_base, ost->mux_timebase);
    1959         211 :                 pkt_size = pkt.size;
    1960         211 :                 output_packet(of, &pkt, ost, 0);
    1961         211 :                 if (ost->enc_ctx->codec_type == AVMEDIA_TYPE_VIDEO && vstats_filename) {
    1962           0 :                     do_video_stats(ost, pkt_size);
    1963             :                 }
    1964             :         }
    1965             :     }
    1966        5376 : }
    1967             : 
    1968             : /*
    1969             :  * Check whether a packet from ist should be written into ost at this time
    1970             :  */
    1971      399659 : static int check_output_constraints(InputStream *ist, OutputStream *ost)
    1972             : {
    1973      399659 :     OutputFile *of = output_files[ost->file_index];
    1974      399659 :     int ist_index  = input_files[ist->file_index]->ist_index + ist->st->index;
    1975             : 
    1976      399659 :     if (ost->source_index != ist_index)
    1977       16263 :         return 0;
    1978             : 
    1979      383396 :     if (ost->finished)
    1980          24 :         return 0;
    1981             : 
    1982      383372 :     if (of->start_time != AV_NOPTS_VALUE && ist->pts < of->start_time)
    1983           0 :         return 0;
    1984             : 
    1985      383372 :     return 1;
    1986             : }
    1987             : 
    1988       26840 : static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
    1989             : {
    1990       26840 :     OutputFile *of = output_files[ost->file_index];
    1991       26840 :     InputFile   *f = input_files [ist->file_index];
    1992       26840 :     int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time;
    1993       26840 :     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       26840 :     av_init_packet(&opkt);
    1998             : 
    1999       26851 :     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
    2000          11 :         !ost->copy_initial_nonkeyframes)
    2001          29 :         return;
    2002             : 
    2003       26829 :     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       27245 :     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       26824 :     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       26822 :     if (ost->enc_ctx->codec_type == AVMEDIA_TYPE_VIDEO)
    2031        8287 :         ost->sync_opts++;
    2032             : 
    2033       26822 :     if (pkt->pts != AV_NOPTS_VALUE)
    2034       21856 :         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->mux_timebase) - ost_tb_start_time;
    2035             :     else
    2036        4966 :         opkt.pts = AV_NOPTS_VALUE;
    2037             : 
    2038       26822 :     if (pkt->dts == AV_NOPTS_VALUE)
    2039        4714 :         opkt.dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ost->mux_timebase);
    2040             :     else
    2041       22108 :         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->mux_timebase);
    2042       26822 :     opkt.dts -= ost_tb_start_time;
    2043             : 
    2044       26822 :     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       26822 :     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->mux_timebase);
    2054             : 
    2055       26822 :     opkt.flags    = pkt->flags;
    2056             :     // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
    2057       26822 :     if (  ost->st->codecpar->codec_id != AV_CODEC_ID_H264
    2058       22703 :        && ost->st->codecpar->codec_id != AV_CODEC_ID_MPEG1VIDEO
    2059       22703 :        && ost->st->codecpar->codec_id != AV_CODEC_ID_MPEG2VIDEO
    2060       22593 :        && ost->st->codecpar->codec_id != AV_CODEC_ID_VC1
    2061       22593 :        ) {
    2062       45186 :         int ret = av_parser_change(ost->parser, ost->parser_avctx,
    2063             :                              &opkt.data, &opkt.size,
    2064       22593 :                              pkt->data, pkt->size,
    2065       22593 :                              pkt->flags & AV_PKT_FLAG_KEY);
    2066       22593 :         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       22593 :         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        4229 :         opkt.data = pkt->data;
    2078        4229 :         opkt.size = pkt->size;
    2079             :     }
    2080       26822 :     av_copy_packet_side_data(&opkt, pkt);
    2081             : 
    2082             : #if FF_API_LAVF_FMT_RAWPICTURE
    2083             :     if (ost->st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
    2084             :         ost->st->codecpar->codec_id == AV_CODEC_ID_RAWVIDEO &&
    2085             :         (of->ctx->oformat->flags & AVFMT_RAWPICTURE)) {
    2086             :         /* store AVPicture in AVPacket, as expected by the output format */
    2087             :         int ret = avpicture_fill(&pict, opkt.data, ost->st->codecpar->format, ost->st->codecpar->width, ost->st->codecpar->height);
    2088             :         if (ret < 0) {
    2089             :             av_log(NULL, AV_LOG_FATAL, "avpicture_fill failed: %s\n",
    2090             :                    av_err2str(ret));
    2091             :             exit_program(1);
    2092             :         }
    2093             :         opkt.data = (uint8_t *)&pict;
    2094             :         opkt.size = sizeof(AVPicture);
    2095             :         opkt.flags |= AV_PKT_FLAG_KEY;
    2096             :     }
    2097             : #endif
    2098             : 
    2099       26822 :     output_packet(of, &opkt, ost, 0);
    2100             : }
    2101             : 
    2102        1288 : int guess_input_channel_layout(InputStream *ist)
    2103             : {
    2104        1288 :     AVCodecContext *dec = ist->dec_ctx;
    2105             : 
    2106        1288 :     if (!dec->channel_layout) {
    2107             :         char layout_name[256];
    2108             : 
    2109         725 :         if (dec->channels > ist->guess_layout_max)
    2110           4 :             return 0;
    2111         723 :         dec->channel_layout = av_get_default_channel_layout(dec->channels);
    2112         723 :         if (!dec->channel_layout)
    2113           0 :             return 0;
    2114         723 :         av_get_channel_layout_string(layout_name, sizeof(layout_name),
    2115             :                                      dec->channels, dec->channel_layout);
    2116         723 :         av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for Input Stream "
    2117         723 :                "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
    2118             :     }
    2119        1286 :     return 1;
    2120             : }
    2121             : 
    2122      736736 : static void check_decode_result(InputStream *ist, int *got_output, int ret)
    2123             : {
    2124      736736 :     if (*got_output || ret<0)
    2125      380353 :         decode_error_stat[ret<0] ++;
    2126             : 
    2127      736736 :     if (ret < 0 && exit_on_error)
    2128           0 :         exit_program(1);
    2129             : 
    2130      736736 :     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      736736 : }
    2137             : 
    2138             : // Filters can be configured only if the formats of all inputs are known.
    2139      909405 : static int ifilter_has_all_input_formats(FilterGraph *fg)
    2140             : {
    2141             :     int i;
    2142      933171 :     for (i = 0; i < fg->nb_inputs; i++) {
    2143     1831915 :         if (fg->inputs[i]->format < 0 && (fg->inputs[i]->type == AVMEDIA_TYPE_AUDIO ||
    2144      904064 :                                           fg->inputs[i]->type == AVMEDIA_TYPE_VIDEO))
    2145      904085 :             return 0;
    2146             :     }
    2147        5320 :     return 1;
    2148             : }
    2149             : 
    2150      379764 : static int ifilter_send_frame(InputFilter *ifilter, AVFrame *frame)
    2151             : {
    2152      379764 :     FilterGraph *fg = ifilter->graph;
    2153             :     int need_reinit, ret, i;
    2154             : 
    2155             :     /* determine if the parameters for this input changed */
    2156      379764 :     need_reinit = ifilter->format != frame->format;
    2157      759528 :     if (!!ifilter->hw_frames_ctx != !!frame->hw_frames_ctx ||
    2158      379764 :         (ifilter->hw_frames_ctx && ifilter->hw_frames_ctx->data != frame->hw_frames_ctx->data))
    2159           0 :         need_reinit = 1;
    2160             : 
    2161      379764 :     switch (ifilter->ist->st->codecpar->codec_type) {
    2162      284274 :     case AVMEDIA_TYPE_AUDIO:
    2163      851755 :         need_reinit |= ifilter->sample_rate    != frame->sample_rate ||
    2164      567480 :                        ifilter->channels       != frame->channels ||
    2165      283206 :                        ifilter->channel_layout != frame->channel_layout;
    2166      284274 :         break;
    2167       95490 :     case AVMEDIA_TYPE_VIDEO:
    2168      186765 :         need_reinit |= ifilter->width  != frame->width ||
    2169       91275 :                        ifilter->height != frame->height;
    2170       95490 :         break;
    2171             :     }
    2172             : 
    2173      379764 :     if (need_reinit) {
    2174        5296 :         ret = ifilter_parameters_from_frame(ifilter, frame);
    2175        5296 :         if (ret < 0)
    2176           0 :             return ret;
    2177             :     }
    2178             : 
    2179             :     /* (re)init the graph if possible, otherwise buffer the frame and return */
    2180      379764 :     if (need_reinit || !fg->graph) {
    2181       10594 :         for (i = 0; i < fg->nb_inputs; i++) {
    2182        5317 :             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        5277 :         ret = reap_filters(1);
    2201        5277 :         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        5277 :         ret = configure_filtergraph(fg);
    2210        5277 :         if (ret < 0) {
    2211           0 :             av_log(NULL, AV_LOG_ERROR, "Error reinitializing filters!\n");
    2212           0 :             return ret;
    2213             :         }
    2214             :     }
    2215             : 
    2216      379745 :     ret = av_buffersrc_add_frame_flags(ifilter->filter, frame, AV_BUFFERSRC_FLAG_PUSH);
    2217      379745 :     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      379745 :     return 0;
    2224             : }
    2225             : 
    2226        5250 : static int ifilter_send_eof(InputFilter *ifilter, int64_t pts)
    2227             : {
    2228             :     int i, j, ret;
    2229             : 
    2230        5250 :     ifilter->eof = 1;
    2231             : 
    2232        5250 :     if (ifilter->filter) {
    2233        5250 :         ret = av_buffersrc_close(ifilter->filter, pts, AV_BUFFERSRC_FLAG_PUSH);
    2234        5250 :         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        5250 :     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      741019 : static int decode(AVCodecContext *avctx, AVFrame *frame, int *got_frame, AVPacket *pkt)
    2259             : {
    2260             :     int ret;
    2261             : 
    2262      741019 :     *got_frame = 0;
    2263             : 
    2264      741019 :     if (pkt) {
    2265      362244 :         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      362244 :         if (ret < 0 && ret != AVERROR_EOF)
    2269         379 :             return ret;
    2270             :     }
    2271             : 
    2272      740640 :     ret = avcodec_receive_frame(avctx, frame);
    2273      740640 :     if (ret < 0 && ret != AVERROR(EAGAIN))
    2274        5252 :         return ret;
    2275      735388 :     if (ret >= 0)
    2276      379376 :         *got_frame = 1;
    2277             : 
    2278      735388 :     return 0;
    2279             : }
    2280             : 
    2281      379376 : 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      759140 :     for (i = 0; i < ist->nb_filters; i++) {
    2288      379764 :         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      379376 :             f = decoded_frame;
    2295      379764 :         ret = ifilter_send_frame(ist->filters[i], f);
    2296      379764 :         if (ret == AVERROR_EOF)
    2297           0 :             ret = 0; /* ignore */
    2298      379764 :         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      379376 :     return ret;
    2305             : }
    2306             : 
    2307      542062 : static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output,
    2308             :                         int *decode_failed)
    2309             : {
    2310             :     AVFrame *decoded_frame;
    2311      542062 :     AVCodecContext *avctx = ist->dec_ctx;
    2312      542062 :     int ret, err = 0;
    2313             :     AVRational decoded_frame_tb;
    2314             : 
    2315      542062 :     if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
    2316           0 :         return AVERROR(ENOMEM);
    2317      542062 :     if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
    2318           0 :         return AVERROR(ENOMEM);
    2319      542062 :     decoded_frame = ist->decoded_frame;
    2320             : 
    2321      542062 :     update_benchmark(NULL);
    2322      542062 :     ret = decode(avctx, decoded_frame, got_output, pkt);
    2323      542062 :     update_benchmark("decode_audio %d.%d", ist->file_index, ist->st->index);
    2324      542062 :     if (ret < 0)
    2325        1075 :         *decode_failed = 1;
    2326             : 
    2327      542062 :     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      542062 :     if (ret != AVERROR_EOF)
    2333      540997 :         check_decode_result(ist, got_output, ret);
    2334             : 
    2335      542062 :     if (!*got_output || ret < 0)
    2336      258176 :         return ret;
    2337             : 
    2338      283886 :     ist->samples_decoded += decoded_frame->nb_samples;
    2339      283886 :     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      567772 :     ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
    2345      283886 :                      avctx->sample_rate;
    2346      567772 :     ist->next_dts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
    2347      283886 :                      avctx->sample_rate;
    2348             : #endif
    2349             : 
    2350      283886 :     if (decoded_frame->pts != AV_NOPTS_VALUE) {
    2351      255982 :         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      283886 :     if (decoded_frame->pts != AV_NOPTS_VALUE)
    2360      567772 :         decoded_frame->pts = av_rescale_delta(decoded_frame_tb, decoded_frame->pts,
    2361      283886 :                                               (AVRational){1, avctx->sample_rate}, decoded_frame->nb_samples, &ist->filter_in_rescale_delta_last,
    2362      283886 :                                               (AVRational){1, avctx->sample_rate});
    2363      283886 :     ist->nb_samples = decoded_frame->nb_samples;
    2364      283886 :     err = send_frame_to_filters(ist, decoded_frame);
    2365             : 
    2366      283886 :     av_frame_unref(ist->filter_frame);
    2367      283886 :     av_frame_unref(decoded_frame);
    2368      283886 :     return err < 0 ? err : ret;
    2369             : }
    2370             : 
    2371      200502 : static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output, int64_t *duration_pts, int eof,
    2372             :                         int *decode_failed)
    2373             : {
    2374             :     AVFrame *decoded_frame;
    2375      200502 :     int i, ret = 0, err = 0;
    2376             :     int64_t best_effort_timestamp;
    2377      200502 :     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      200502 :     if (!eof && pkt && pkt->size == 0)
    2384        1545 :         return 0;
    2385             : 
    2386      198957 :     if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
    2387           0 :         return AVERROR(ENOMEM);
    2388      198957 :     if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
    2389           0 :         return AVERROR(ENOMEM);
    2390      198957 :     decoded_frame = ist->decoded_frame;
    2391      198957 :     if (ist->dts != AV_NOPTS_VALUE)
    2392      198544 :         dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
    2393      198957 :     if (pkt) {
    2394      104041 :         avpkt = *pkt;
    2395      104041 :         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      198957 :     if (eof) {
    2401        4756 :         void *new = av_realloc_array(ist->dts_buffer, ist->nb_dts_buffer + 1, sizeof(ist->dts_buffer[0]));
    2402        4756 :         if (!new)
    2403           0 :             return AVERROR(ENOMEM);
    2404        4756 :         ist->dts_buffer = new;
    2405        4756 :         ist->dts_buffer[ist->nb_dts_buffer++] = dts;
    2406             :     }
    2407             : 
    2408      198957 :     update_benchmark(NULL);
    2409      198957 :     ret = decode(ist->dec_ctx, decoded_frame, got_output, pkt ? &avpkt : NULL);
    2410      198957 :     update_benchmark("decode_video %d.%d", ist->file_index, ist->st->index);
    2411      198957 :     if (ret < 0)
    2412        4556 :         *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      198957 :     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      198957 :     if (ret != AVERROR_EOF)
    2430      194775 :         check_decode_result(ist, got_output, ret);
    2431             : 
    2432      198957 :     if (*got_output && ret >= 0) {
    2433      190971 :         if (ist->dec_ctx->width  != decoded_frame->width ||
    2434      190960 :             ist->dec_ctx->height != decoded_frame->height ||
    2435       95479 :             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      198957 :     if (!*got_output || ret < 0)
    2447      103467 :         return ret;
    2448             : 
    2449       95490 :     if(ist->top_field_first>=0)
    2450           0 :         decoded_frame->top_field_first = ist->top_field_first;
    2451             : 
    2452       95490 :     ist->frames_decoded++;
    2453             : 
    2454       95490 :     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       95490 :     ist->hwaccel_retrieved_pix_fmt = decoded_frame->format;
    2460             : 
    2461       95490 :     best_effort_timestamp= decoded_frame->best_effort_timestamp;
    2462       95490 :     *duration_pts = decoded_frame->pkt_duration;
    2463             : 
    2464       95490 :     if (ist->framerate.num)
    2465         103 :         best_effort_timestamp = ist->cfr_next_pts++;
    2466             : 
    2467       95490 :     if (eof && best_effort_timestamp == AV_NOPTS_VALUE && ist->nb_dts_buffer > 0) {
    2468         519 :         best_effort_timestamp = ist->dts_buffer[0];
    2469             : 
    2470         519 :         for (i = 0; i < ist->nb_dts_buffer - 1; i++)
    2471           0 :             ist->dts_buffer[i] = ist->dts_buffer[i + 1];
    2472         519 :         ist->nb_dts_buffer--;
    2473             :     }
    2474             : 
    2475       95490 :     if(best_effort_timestamp != AV_NOPTS_VALUE) {
    2476       95490 :         int64_t ts = av_rescale_q(decoded_frame->pts = best_effort_timestamp, ist->st->time_base, AV_TIME_BASE_Q);
    2477             : 
    2478       95490 :         if (ts != AV_NOPTS_VALUE)
    2479       95490 :             ist->next_pts = ist->pts = ts;
    2480             :     }
    2481             : 
    2482       95490 :     if (debug_ts) {
    2483           0 :         av_log(NULL, AV_LOG_INFO, "decoder -> ist_index:%d type:video "
    2484             :                "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",
    2485           0 :                ist->st->index, av_ts2str(decoded_frame->pts),
    2486           0 :                av_ts2timestr(decoded_frame->pts, &ist->st->time_base),
    2487             :                best_effort_timestamp,
    2488           0 :                av_ts2timestr(best_effort_timestamp, &ist->st->time_base),
    2489           0 :                decoded_frame->key_frame, decoded_frame->pict_type,
    2490           0 :                ist->st->time_base.num, ist->st->time_base.den);
    2491             :     }
    2492             : 
    2493       95490 :     if (ist->st->sample_aspect_ratio.num)
    2494        4283 :         decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
    2495             : 
    2496       95490 :     err = send_frame_to_filters(ist, decoded_frame);
    2497             : 
    2498       95490 : fail:
    2499       95490 :     av_frame_unref(ist->filter_frame);
    2500       95490 :     av_frame_unref(decoded_frame);
    2501       95490 :     return err < 0 ? err : ret;
    2502             : }
    2503             : 
    2504         964 : static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output,
    2505             :                                int *decode_failed)
    2506             : {
    2507             :     AVSubtitle subtitle;
    2508         964 :     int free_sub = 1;
    2509         964 :     int i, ret = avcodec_decode_subtitle2(ist->dec_ctx,
    2510             :                                           &subtitle, got_output, pkt);
    2511             : 
    2512         964 :     check_decode_result(NULL, got_output, ret);
    2513             : 
    2514         964 :     if (ret < 0 || !*got_output) {
    2515         371 :         *decode_failed = 1;
    2516         371 :         if (!pkt->size)
    2517          30 :             sub2video_flush(ist);
    2518         371 :         return ret;
    2519             :     }
    2520             : 
    2521         593 :     if (ist->fix_sub_duration) {
    2522           0 :         int end = 1;
    2523           0 :         if (ist->prev_sub.got_output) {
    2524           0 :             end = av_rescale(subtitle.pts - ist->prev_sub.subtitle.pts,
    2525             :                              1000, AV_TIME_BASE);
    2526           0 :             if (end < ist->prev_sub.subtitle.end_display_time) {
    2527           0 :                 av_log(ist->dec_ctx, AV_LOG_DEBUG,
    2528             :                        "Subtitle duration reduced from %"PRId32" to %d%s\n",
    2529             :                        ist->prev_sub.subtitle.end_display_time, end,
    2530             :                        end <= 0 ? ", dropping it" : "");
    2531           0 :                 ist->prev_sub.subtitle.end_display_time = end;
    2532             :             }
    2533             :         }
    2534           0 :         FFSWAP(int,        *got_output, ist->prev_sub.got_output);
    2535           0 :         FFSWAP(int,        ret,         ist->prev_sub.ret);
    2536           0 :         FFSWAP(AVSubtitle, subtitle,    ist->prev_sub.subtitle);
    2537           0 :         if (end <= 0)
    2538           0 :             goto out;
    2539             :     }
    2540             : 
    2541         593 :     if (!*got_output)
    2542           0 :         return ret;
    2543             : 
    2544         593 :     if (ist->sub2video.frame) {
    2545          44 :         sub2video_update(ist, &subtitle);
    2546         549 :     } else if (ist->nb_filters) {
    2547           0 :         if (!ist->sub2video.sub_queue)
    2548           0 :             ist->sub2video.sub_queue = av_fifo_alloc(8 * sizeof(AVSubtitle));
    2549           0 :         if (!ist->sub2video.sub_queue)
    2550           0 :             exit_program(1);
    2551           0 :         if (!av_fifo_space(ist->sub2video.sub_queue)) {
    2552           0 :             ret = av_fifo_realloc2(ist->sub2video.sub_queue, 2 * av_fifo_size(ist->sub2video.sub_queue));
    2553           0 :             if (ret < 0)
    2554           0 :                 exit_program(1);
    2555             :         }
    2556           0 :         av_fifo_generic_write(ist->sub2video.sub_queue, &subtitle, sizeof(subtitle), NULL);
    2557           0 :         free_sub = 0;
    2558             :     }
    2559             : 
    2560         593 :     if (!subtitle.num_rects)
    2561           0 :         goto out;
    2562             : 
    2563         593 :     ist->frames_decoded++;
    2564             : 
    2565        1230 :     for (i = 0; i < nb_output_streams; i++) {
    2566         637 :         OutputStream *ost = output_streams[i];
    2567             : 
    2568         637 :         if (!check_output_constraints(ist, ost) || !ost->encoding_needed
    2569         592 :             || ost->enc->type != AVMEDIA_TYPE_SUBTITLE)
    2570          45 :             continue;
    2571             : 
    2572         592 :         do_subtitle_out(output_files[ost->file_index], ost, &subtitle);
    2573             :     }
    2574             : 
    2575         593 : out:
    2576         593 :     if (free_sub)
    2577         593 :         avsubtitle_free(&subtitle);
    2578         593 :     return ret;
    2579             : }
    2580             : 
    2581        5277 : static int send_filter_eof(InputStream *ist)
    2582             : {
    2583             :     int i, ret;
    2584             :     /* TODO keep pts also in stream time base to avoid converting back */
    2585        5277 :     int64_t pts = av_rescale_q_rnd(ist->pts, AV_TIME_BASE_Q, ist->st->time_base,
    2586             :                                    AV_ROUND_NEAR_INF | AV_ROUND_PASS_MINMAX);
    2587             : 
    2588       10527 :     for (i = 0; i < ist->nb_filters; i++) {
    2589        5250 :         ret = ifilter_send_eof(ist->filters[i], pts);
    2590        5250 :         if (ret < 0)
    2591           0 :             return ret;
    2592             :     }
    2593        5277 :     return 0;
    2594             : }
    2595             : 
    2596             : /* pkt = NULL means EOF (needed to flush decoder buffers) */
    2597      391616 : static int process_input_packet(InputStream *ist, const AVPacket *pkt, int no_eof)
    2598             : {
    2599      391616 :     int ret = 0, i;
    2600      391616 :     int repeating = 0;
    2601      391616 :     int eof_reached = 0;
    2602             : 
    2603             :     AVPacket avpkt;
    2604      391616 :     if (!ist->saw_first_ts) {
    2605        5488 :         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;
    2606        5488 :         ist->pts = 0;
    2607        5488 :         if (pkt && pkt->pts != AV_NOPTS_VALUE && !ist->decoding_needed) {
    2608         144 :             ist->dts += av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
    2609         144 :             ist->pts = ist->dts; //unused but better to set it to a value thats not totally wrong
    2610             :         }
    2611        5488 :         ist->saw_first_ts = 1;
    2612             :     }
    2613             : 
    2614      391616 :     if (ist->next_dts == AV_NOPTS_VALUE)
    2615        5905 :         ist->next_dts = ist->dts;
    2616      391616 :     if (ist->next_pts == AV_NOPTS_VALUE)
    2617        5488 :         ist->next_pts = ist->pts;
    2618             : 
    2619      391616 :     if (!pkt) {
    2620             :         /* EOF handling */
    2621        5879 :         av_init_packet(&avpkt);
    2622        5879 :         avpkt.data = NULL;
    2623        5879 :         avpkt.size = 0;
    2624             :     } else {
    2625      385737 :         avpkt = *pkt;
    2626             :     }
    2627             : 
    2628      391616 :     if (pkt && pkt->dts != AV_NOPTS_VALUE) {
    2629      350068 :         ist->next_dts = ist->dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
    2630      350068 :         if (ist->dec_ctx->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
    2631      279113 :             ist->next_pts = ist->pts = ist->dts;
    2632             :     }
    2633             : 
    2634             :     // while we have more to decode or while the decoder did output something on EOF
    2635     1162600 :     while (ist->decoding_needed) {
    2636      744121 :         int64_t duration_dts = 0;
    2637      744121 :         int64_t duration_pts = 0;
    2638      744121 :         int got_output = 0;
    2639      744121 :         int decode_failed = 0;
    2640             : 
    2641      744121 :         ist->pts = ist->next_pts;
    2642      744121 :         ist->dts = ist->next_dts;
    2643             : 
    2644      744121 :         switch (ist->dec_ctx->codec_type) {
    2645      542062 :         case AVMEDIA_TYPE_AUDIO:
    2646      542062 :             ret = decode_audio    (ist, repeating ? NULL : &avpkt, &got_output,
    2647             :                                    &decode_failed);
    2648      542062 :             break;
    2649      200502 :         case AVMEDIA_TYPE_VIDEO:
    2650      200502 :             ret = decode_video    (ist, repeating ? NULL : &avpkt, &got_output, &duration_pts, !pkt,
    2651             :                                    &decode_failed);
    2652      200502 :             if (!repeating || !pkt || got_output) {
    2653      105586 :                 if (pkt && pkt->duration) {
    2654       98533 :                     duration_dts = av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
    2655        7053 :                 } else if(ist->dec_ctx->framerate.num != 0 && ist->dec_ctx->framerate.den != 0) {
    2656        5843 :                     int ticks= av_stream_get_parser(ist->st) ? av_stream_get_parser(ist->st)->repeat_pict+1 : ist->dec_ctx->ticks_per_frame;
    2657       11686 :                     duration_dts = ((int64_t)AV_TIME_BASE *
    2658       17529 :                                     ist->dec_ctx->framerate.den * ticks) /
    2659       11686 :                                     ist->dec_ctx->framerate.num / ist->dec_ctx->ticks_per_frame;
    2660             :                 }
    2661             : 
    2662      105586 :                 if(ist->dts != AV_NOPTS_VALUE && duration_dts) {
    2663      104376 :                     ist->next_dts += duration_dts;
    2664             :                 }else
    2665        1210 :                     ist->next_dts = AV_NOPTS_VALUE;
    2666             :             }
    2667             : 
    2668      200502 :             if (got_output) {
    2669       95490 :                 if (duration_pts > 0) {
    2670       93245 :                     ist->next_pts += av_rescale_q(duration_pts, ist->st->time_base, AV_TIME_BASE_Q);
    2671             :                 } else {
    2672        2245 :                     ist->next_pts += duration_dts;
    2673             :                 }
    2674             :             }
    2675      200502 :             break;
    2676        1557 :         case AVMEDIA_TYPE_SUBTITLE:
    2677        1557 :             if (repeating)
    2678         593 :                 break;
    2679         964 :             ret = transcode_subtitles(ist, &avpkt, &got_output, &decode_failed);
    2680         964 :             if (!pkt && ret >= 0)
    2681          30 :                 ret = AVERROR_EOF;
    2682         964 :             break;
    2683           0 :         default:
    2684           0 :             return -1;
    2685             :         }
    2686             : 
    2687      744121 :         if (ret == AVERROR_EOF) {
    2688        5277 :             eof_reached = 1;
    2689      370030 :             break;
    2690             :         }
    2691             : 
    2692      738844 :         if (ret < 0) {
    2693         384 :             if (decode_failed) {
    2694         768 :                 av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d: %s\n",
    2695         768 :                        ist->file_index, ist->st->index, av_err2str(ret));
    2696             :             } else {
    2697           0 :                 av_log(NULL, AV_LOG_FATAL, "Error while processing the decoded "
    2698           0 :                        "data for stream #%d:%d\n", ist->file_index, ist->st->index);
    2699             :             }
    2700         384 :             if (!decode_failed || exit_on_error)
    2701           0 :                 exit_program(1);
    2702         384 :             break;
    2703             :         }
    2704             : 
    2705      738460 :         if (got_output)
    2706      379969 :             ist->got_output = 1;
    2707             : 
    2708      738460 :         if (!got_output)
    2709      358491 :             break;
    2710             : 
    2711             :         // During draining, we might get multiple output frames in this loop.
    2712             :         // ffmpeg.c does not drain the filter chain on configuration changes,
    2713             :         // which means if we send multiple frames at once to the filters, and
    2714             :         // one of those frames changes configuration, the buffered frames will
    2715             :         // be lost. This can upset certain FATE tests.
    2716             :         // Decode only 1 frame per call on EOF to appease these FATE tests.
    2717             :         // The ideal solution would be to rewrite decoding to use the new
    2718             :         // decoding API in a better way.
    2719      379969 :         if (!pkt)
    2720         601 :             break;
    2721             : 
    2722      379368 :         repeating = 1;
    2723             :     }
    2724             : 
    2725             :     /* after flushing, send an EOF on all the filter inputs attached to the stream */
    2726             :     /* except when looping we need to flush but not to send an EOF */
    2727      391616 :     if (!pkt && ist->decoding_needed && eof_reached && !no_eof) {
    2728        5277 :         int ret = send_filter_eof(ist);
    2729        5277 :         if (ret < 0) {
    2730           0 :             av_log(NULL, AV_LOG_FATAL, "Error marking filters as finished\n");
    2731           0 :             exit_program(1);
    2732             :         }
    2733             :     }
    2734             : 
    2735             :     /* handle stream copy */
    2736      391616 :     if (!ist->decoding_needed) {
    2737       26863 :         ist->dts = ist->next_dts;
    2738       26863 :         switch (ist->dec_ctx->codec_type) {
    2739       18033 :         case AVMEDIA_TYPE_AUDIO:
    2740       36066 :             ist->next_dts += ((int64_t)AV_TIME_BASE * ist->dec_ctx->frame_size) /
    2741       18033 :                              ist->dec_ctx->sample_rate;
    2742       18033 :             break;
    2743        8300 :         case AVMEDIA_TYPE_VIDEO:
    2744        8300 :             if (ist->framerate.num) {
    2745             :                 // TODO: Remove work-around for c99-to-c89 issue 7
    2746          79 :                 AVRational time_base_q = AV_TIME_BASE_Q;
    2747          79 :                 int64_t next_dts = av_rescale_q(ist->next_dts, time_base_q, av_inv_q(ist->framerate));
    2748          79 :                 ist->next_dts = av_rescale_q(next_dts + 1, av_inv_q(ist->framerate), time_base_q);
    2749        8221 :             } else if (pkt->duration) {
    2750        7994 :                 ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
    2751         227 :             } else if(ist->dec_ctx->framerate.num != 0) {
    2752         119 :                 int ticks= av_stream_get_parser(ist->st) ? av_stream_get_parser(ist->st)->repeat_pict + 1 : ist->dec_ctx->ticks_per_frame;
    2753         357 :                 ist->next_dts += ((int64_t)AV_TIME_BASE *
    2754         357 :                                   ist->dec_ctx->framerate.den * ticks) /
    2755         238 :                                   ist->dec_ctx->framerate.num / ist->dec_ctx->ticks_per_frame;
    2756             :             }
    2757        8300 :             break;
    2758             :         }
    2759       26863 :         ist->pts = ist->dts;
    2760       26863 :         ist->next_pts = ist->next_dts;
    2761             :     }
    2762      790638 :     for (i = 0; pkt && i < nb_output_streams; i++) {
    2763      399022 :         OutputStream *ost = output_streams[i];
    2764             : 
    2765      399022 :         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
    2766      372182 :             continue;
    2767             : 
    2768       26840 :         do_streamcopy(ist, ost, pkt);
    2769             :     }
    2770             : 
    2771      391616 :     return !eof_reached;
    2772             : }
    2773             : 
    2774           0 : static void print_sdp(void)
    2775             : {
    2776             :     char sdp[16384];
    2777             :     int i;
    2778             :     int j;
    2779             :     AVIOContext *sdp_pb;
    2780             :     AVFormatContext **avc;
    2781             : 
    2782           0 :     for (i = 0; i < nb_output_files; i++) {
    2783           0 :         if (!output_files[i]->header_written)
    2784           0 :             return;
    2785             :     }
    2786             : 
    2787           0 :     avc = av_malloc_array(nb_output_files, sizeof(*avc));
    2788           0 :     if (!avc)
    2789           0 :         exit_program(1);
    2790           0 :     for (i = 0, j = 0; i < nb_output_files; i++) {
    2791           0 :         if (!strcmp(output_files[i]->ctx->oformat->name, "rtp")) {
    2792           0 :             avc[j] = output_files[i]->ctx;
    2793           0 :             j++;
    2794             :         }
    2795             :     }
    2796             : 
    2797           0 :     if (!j)
    2798           0 :         goto fail;
    2799             : 
    2800           0 :     av_sdp_create(avc, j, sdp, sizeof(sdp));
    2801             : 
    2802           0 :     if (!sdp_filename) {
    2803           0 :         printf("SDP:\n%s\n", sdp);
    2804           0 :         fflush(stdout);
    2805             :     } else {
    2806           0 :         if (avio_open2(&sdp_pb, sdp_filename, AVIO_FLAG_WRITE, &int_cb, NULL) < 0) {
    2807           0 :             av_log(NULL, AV_LOG_ERROR, "Failed to open sdp file '%s'\n", sdp_filename);
    2808             :         } else {
    2809           0 :             avio_printf(sdp_pb, "SDP:\n%s", sdp);
    2810           0 :             avio_closep(&sdp_pb);
    2811           0 :             av_freep(&sdp_filename);
    2812             :         }
    2813             :     }
    2814             : 
    2815           0 : fail:
    2816           0 :     av_freep(&avc);
    2817             : }
    2818             : 
    2819           0 : static const HWAccel *get_hwaccel(enum AVPixelFormat pix_fmt)
    2820             : {
    2821             :     int i;
    2822           0 :     for (i = 0; hwaccels[i].name; i++)
    2823           0 :         if (hwaccels[i].pix_fmt == pix_fmt)
    2824           0 :             return &hwaccels[i];
    2825           0 :     return NULL;
    2826             : }
    2827             : 
    2828         826 : static enum AVPixelFormat get_format(AVCodecContext *s, const enum AVPixelFormat *pix_fmts)
    2829             : {
    2830         826 :     InputStream *ist = s->opaque;
    2831             :     const enum AVPixelFormat *p;
    2832             :     int ret;
    2833             : 
    2834         826 :     for (p = pix_fmts; *p != -1; p++) {
    2835         826 :         const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(*p);
    2836             :         const HWAccel *hwaccel;
    2837             : 
    2838         826 :         if (!(desc->flags & AV_PIX_FMT_FLAG_HWACCEL))
    2839         826 :             break;
    2840             : 
    2841           0 :         hwaccel = get_hwaccel(*p);
    2842           0 :         if (!hwaccel ||
    2843           0 :             (ist->active_hwaccel_id && ist->active_hwaccel_id != hwaccel->id) ||
    2844           0 :             (ist->hwaccel_id != HWACCEL_AUTO && ist->hwaccel_id != hwaccel->id))
    2845           0 :             continue;
    2846             : 
    2847           0 :         ret = hwaccel->init(s);
    2848           0 :         if (ret < 0) {
    2849           0 :             if (ist->hwaccel_id == hwaccel->id) {
    2850           0 :                 av_log(NULL, AV_LOG_FATAL,
    2851             :                        "%s hwaccel requested for input stream #%d:%d, "
    2852             :                        "but cannot be initialized.\n", hwaccel->name,
    2853           0 :                        ist->file_index, ist->st->index);
    2854           0 :                 return AV_PIX_FMT_NONE;
    2855             :             }
    2856           0 :             continue;
    2857             :         }
    2858             : 
    2859           0 :         if (ist->hw_frames_ctx) {
    2860           0 :             s->hw_frames_ctx = av_buffer_ref(ist->hw_frames_ctx);
    2861           0 :             if (!s->hw_frames_ctx)
    2862           0 :                 return AV_PIX_FMT_NONE;
    2863             :         }
    2864             : 
    2865           0 :         ist->active_hwaccel_id = hwaccel->id;
    2866           0 :         ist->hwaccel_pix_fmt   = *p;
    2867           0 :         break;
    2868             :     }
    2869             : 
    2870         826 :     return *p;
    2871             : }
    2872             : 
    2873      355291 : static int get_buffer(AVCodecContext *s, AVFrame *frame, int flags)
    2874             : {
    2875      355291 :     InputStream *ist = s->opaque;
    2876             : 
    2877      355291 :     if (ist->hwaccel_get_buffer && frame->format == ist->hwaccel_pix_fmt)
    2878           0 :         return ist->hwaccel_get_buffer(s, frame, flags);
    2879             : 
    2880      355291 :     return avcodec_default_get_buffer2(s, frame, flags);
    2881             : }
    2882             : 
    2883        5729 : static int init_input_stream(int ist_index, char *error, int error_len)
    2884             : {
    2885             :     int ret;
    2886        5729 :     InputStream *ist = input_streams[ist_index];
    2887             : 
    2888        5729 :     if (ist->decoding_needed) {
    2889        5288 :         AVCodec *codec = ist->dec;
    2890        5288 :         if (!codec) {
    2891           0 :             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
    2892           0 :                     avcodec_get_name(ist->dec_ctx->codec_id), ist->file_index, ist->st->index);
    2893           0 :             return AVERROR(EINVAL);
    2894             :         }
    2895             : 
    2896        5288 :         ist->dec_ctx->opaque                = ist;
    2897        5288 :         ist->dec_ctx->get_format            = get_format;
    2898        5288 :         ist->dec_ctx->get_buffer2           = get_buffer;
    2899        5288 :         ist->dec_ctx->thread_safe_callbacks = 1;
    2900             : 
    2901        5288 :         av_opt_set_int(ist->dec_ctx, "refcounted_frames", 1, 0);
    2902        5288 :         if (ist->dec_ctx->codec_id == AV_CODEC_ID_DVB_SUBTITLE &&
    2903           0 :            (ist->decoding_needed & DECODING_FOR_OST)) {
    2904           0 :             av_dict_set(&ist->decoder_opts, "compute_edt", "1", AV_DICT_DONT_OVERWRITE);
    2905           0 :             if (ist->decoding_needed & DECODING_FOR_FILTER)
    2906           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");
    2907             :         }
    2908             : 
    2909        5288 :         av_dict_set(&ist->decoder_opts, "sub_text_format", "ass", AV_DICT_DONT_OVERWRITE);
    2910             : 
    2911             :         /* Useful for subtitles retiming by lavf (FIXME), skipping samples in
    2912             :          * audio, and video decoders such as cuvid or mediacodec */
    2913        5288 :         av_codec_set_pkt_timebase(ist->dec_ctx, ist->st->time_base);
    2914             : 
    2915        5288 :         if (!av_dict_get(ist->decoder_opts, "threads", NULL, 0))
    2916          42 :             av_dict_set(&ist->decoder_opts, "threads", "auto", 0);
    2917             :         /* Attached pics are sparse, therefore we would not want to delay their decoding till EOF. */
    2918        5288 :         if (ist->st->disposition & AV_DISPOSITION_ATTACHED_PIC)
    2919           0 :             av_dict_set(&ist->decoder_opts, "threads", "1", 0);
    2920             : 
    2921        5288 :         ret = hw_device_setup_for_decode(ist);
    2922        5288 :         if (ret < 0) {
    2923           0 :             snprintf(error, error_len, "Device setup failed for "
    2924             :                      "decoder on input stream #%d:%d : %s",
    2925           0 :                      ist->file_index, ist->st->index, av_err2str(ret));
    2926           0 :             return ret;
    2927             :         }
    2928             : 
    2929        5288 :         if ((ret = avcodec_open2(ist->dec_ctx, codec, &ist->decoder_opts)) < 0) {
    2930           0 :             if (ret == AVERROR_EXPERIMENTAL)
    2931           0 :                 abort_codec_experimental(codec, 0);
    2932             : 
    2933           0 :             snprintf(error, error_len,
    2934             :                      "Error while opening decoder for input stream "
    2935             :                      "#%d:%d : %s",
    2936           0 :                      ist->file_index, ist->st->index, av_err2str(ret));
    2937           0 :             return ret;
    2938             :         }
    2939        5288 :         assert_avoptions(ist->decoder_opts);
    2940             :     }
    2941             : 
    2942        5729 :     ist->next_pts = AV_NOPTS_VALUE;
    2943        5729 :     ist->next_dts = AV_NOPTS_VALUE;
    2944             : 
    2945        5729 :     return 0;
    2946             : }
    2947             : 
    2948       16070 : static InputStream *get_input_stream(OutputStream *ost)
    2949             : {
    2950       16070 :     if (ost->source_index >= 0)
    2951       15941 :         return input_streams[ost->source_index];
    2952         129 :     return NULL;
    2953             : }
    2954             : 
    2955           1 : static int compare_int64(const void *a, const void *b)
    2956             : {
    2957           1 :     return FFDIFFSIGN(*(const int64_t *)a, *(const int64_t *)b);
    2958             : }
    2959             : 
    2960             : /* open the muxer when all the streams are initialized */
    2961        5515 : static int check_init_output_file(OutputFile *of, int file_index)
    2962             : {
    2963             :     int ret, i;
    2964             : 
    2965       11142 :     for (i = 0; i < of->ctx->nb_streams; i++) {
    2966        5765 :         OutputStream *ost = output_streams[of->ost_index + i];
    2967        5765 :         if (!ost->initialized)
    2968         138 :             return 0;
    2969             :     }
    2970             : 
    2971        5377 :     of->ctx->interrupt_callback = int_cb;
    2972             : 
    2973        5377 :     ret = avformat_write_header(of->ctx, &of->opts);
    2974        5377 :     if (ret < 0) {
    2975           0 :         av_log(NULL, AV_LOG_ERROR,
    2976             :                "Could not write header for output file #%d "
    2977             :                "(incorrect codec parameters ?): %s\n",
    2978           0 :                file_index, av_err2str(ret));
    2979           0 :         return ret;
    2980             :     }
    2981             :     //assert_avoptions(of->opts);
    2982        5377 :     of->header_written = 1;
    2983             : 
    2984        5377 :     av_dump_format(of->ctx, file_index, of->ctx->filename, 1);
    2985             : 
    2986        5377 :     if (sdp_filename || want_sdp)
    2987           0 :         print_sdp();
    2988             : 
    2989             :     /* flush the muxing queues */
    2990       10891 :     for (i = 0; i < of->ctx->nb_streams; i++) {
    2991        5514 :         OutputStream *ost = output_streams[of->ost_index + i];
    2992             : 
    2993             :         /* try to improve muxing time_base (only possible if nothing has been written yet) */
    2994        5514 :         if (!av_fifo_size(ost->muxing_queue))
    2995        5439 :             ost->mux_timebase = ost->st->time_base;
    2996             : 
    2997       11302 :         while (av_fifo_size(ost->muxing_queue)) {
    2998             :             AVPacket pkt;
    2999         274 :             av_fifo_generic_read(ost->muxing_queue, &pkt, sizeof(pkt), NULL);
    3000         274 :             write_packet(of, &pkt, ost, 1);
    3001             :         }
    3002             :     }
    3003             : 
    3004        5377 :     return 0;
    3005             : }
    3006             : 
    3007        5514 : static int init_output_bsfs(OutputStream *ost)
    3008             : {
    3009             :     AVBSFContext *ctx;
    3010             :     int i, ret;
    3011             : 
    3012        5514 :     if (!ost->nb_bitstream_filters)
    3013        5471 :         return 0;
    3014             : 
    3015          86 :     for (i = 0; i < ost->nb_bitstream_filters; i++) {
    3016          43 :         ctx = ost->bsf_ctx[i];
    3017             : 
    3018          86 :         ret = avcodec_parameters_copy(ctx->par_in,
    3019          43 :                                       i ? ost->bsf_ctx[i - 1]->par_out : ost->st->codecpar);
    3020          43 :         if (ret < 0)
    3021           0 :             return ret;
    3022             : 
    3023          43 :         ctx->time_base_in = i ? ost->bsf_ctx[i - 1]->time_base_out : ost->st->time_base;
    3024             : 
    3025          43 :         ret = av_bsf_init(ctx);
    3026          43 :         if (ret < 0) {
    3027           0 :             av_log(NULL, AV_LOG_ERROR, "Error initializing bitstream filter: %s\n",
    3028           0 :                    ost->bsf_ctx[i]->filter->name);
    3029           0 :             return ret;
    3030             :         }
    3031             :     }
    3032             : 
    3033          43 :     ctx = ost->bsf_ctx[ost->nb_bitstream_filters - 1];
    3034          43 :     ret = avcodec_parameters_copy(ost->st->codecpar, ctx->par_out);
    3035          43 :     if (ret < 0)
    3036           0 :         return ret;
    3037             : 
    3038          43 :     ost->st->time_base = ctx->time_base_out;
    3039             : 
    3040          43 :     return 0;
    3041             : }
    3042             : 
    3043         220 : static int init_output_stream_streamcopy(OutputStream *ost)
    3044             : {
    3045         220 :     OutputFile *of = output_files[ost->file_index];
    3046         220 :     InputStream *ist = get_input_stream(ost);
    3047         220 :     AVCodecParameters *par_dst = ost->st->codecpar;
    3048         220 :     AVCodecParameters *par_src = ost->ref_par;
    3049             :     AVRational sar;
    3050             :     int i, ret;
    3051         220 :     uint32_t codec_tag = par_dst->codec_tag;
    3052             : 
    3053         220 :     av_assert0(ist && !ost->filter);
    3054             : 
    3055         220 :     ret = avcodec_parameters_to_context(ost->enc_ctx, ist->st->codecpar);
    3056         220 :     if (ret >= 0)
    3057         220 :         ret = av_opt_set_dict(ost->enc_ctx, &ost->encoder_opts);
    3058         220 :     if (ret < 0) {
    3059           0 :         av_log(NULL, AV_LOG_FATAL,
    3060             :                "Error setting up codec context options.\n");
    3061           0 :         return ret;
    3062             :     }
    3063         220 :     avcodec_parameters_from_context(par_src, ost->enc_ctx);
    3064             : 
    3065         220 :     if (!codec_tag) {
    3066             :         unsigned int codec_tag_tmp;
    3067         247 :         if (!of->ctx->oformat->codec_tag ||
    3068          39 :             av_codec_get_id (of->ctx->oformat->codec_tag, par_src->codec_tag) == par_src->codec_id ||
    3069          12 :             !av_codec_get_tag2(of->ctx->oformat->codec_tag, par_src->codec_id, &codec_tag_tmp))
    3070         211 :             codec_tag = par_src->codec_tag;
    3071             :     }
    3072             : 
    3073         220 :     ret = avcodec_parameters_copy(par_dst, par_src);
    3074         220 :     if (ret < 0)
    3075           0 :         return ret;
    3076             : 
    3077         220 :     par_dst->codec_tag = codec_tag;
    3078             : 
    3079         220 :     if (!ost->frame_rate.num)
    3080         219 :         ost->frame_rate = ist->framerate;
    3081         220 :     ost->st->avg_frame_rate = ost->frame_rate;
    3082             : 
    3083         220 :     ret = avformat_transfer_internal_stream_timing_info(of->ctx->oformat, ost->st, ist->st, copy_tb);
    3084         220 :     if (ret < 0)
    3085           0 :         return ret;
    3086             : 
    3087             :     // copy timebase while removing common factors
    3088         220 :     if (ost->st->time_base.num <= 0 || ost->st->time_base.den <= 0)
    3089         219 :         ost->st->time_base = av_add_q(av_stream_get_codec_timebase(ost->st), (AVRational){0, 1});
    3090             : 
    3091             :     // copy estimated duration as a hint to the muxer
    3092         220 :     if (ost->st->duration <= 0 && ist->st->duration > 0)
    3093         129 :         ost->st->duration = av_rescale_q(ist->st->duration, ist->st->time_base, ost->st->time_base);
    3094             : 
    3095             :     // copy disposition
    3096         220 :     ost->st->disposition = ist->st->disposition;
    3097             : 
    3098         220 :     if (ist->st->nb_side_data) {
    3099           8 :         for (i = 0; i < ist->st->nb_side_data; i++) {
    3100           4 :             const AVPacketSideData *sd_src = &ist->st->side_data[i];
    3101             :             uint8_t *dst_data;
    3102             : 
    3103           4 :             dst_data = av_stream_new_side_data(ost->st, sd_src->type, sd_src->size);
    3104           4 :             if (!dst_data)
    3105           0 :                 return AVERROR(ENOMEM);
    3106           4 :             memcpy(dst_data, sd_src->data, sd_src->size);
    3107             :         }
    3108             :     }
    3109             : 
    3110         220 :     if (ost->rotate_overridden) {
    3111           1 :         uint8_t *sd = av_stream_new_side_data(ost->st, AV_PKT_DATA_DISPLAYMATRIX,
    3112             :                                               sizeof(int32_t) * 9);
    3113           1 :         if (sd)
    3114           1 :             av_display_rotation_set((int32_t *)sd, -ost->rotate_override_value);
    3115             :     }
    3116             : 
    3117         220 :     ost->parser = av_parser_init(par_dst->codec_id);
    3118         220 :     ost->parser_avctx = avcodec_alloc_context3(NULL);
    3119         220 :     if (!ost->parser_avctx)
    3120           0 :         return AVERROR(ENOMEM);
    3121             : 
    3122         220 :     switch (par_dst->codec_type) {
    3123          88 :     case AVMEDIA_TYPE_AUDIO:
    3124          88 :         if (audio_volume != 256) {
    3125           0 :             av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
    3126           0 :             exit_program(1);
    3127             :         }
    3128          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)
    3129           0 :             par_dst->block_align= 0;
    3130          88 :         if(par_dst->codec_id == AV_CODEC_ID_AC3)
    3131           2 :             par_dst->block_align= 0;
    3132          88 :         break;
    3133         116 :     case AVMEDIA_TYPE_VIDEO:
    3134         116 :         if (ost->frame_aspect_ratio.num) { // overridden by the -aspect cli option
    3135           0 :             sar =
    3136             :                 av_mul_q(ost->frame_aspect_ratio,
    3137           0 :                          (AVRational){ par_dst->height, par_dst->width });
    3138           0 :             av_log(NULL, AV_LOG_WARNING, "Overriding aspect ratio "
    3139             :                    "with stream copy may produce invalid files\n");
    3140             :             }
    3141         116 :         else if (ist->st->sample_aspect_ratio.num)
    3142          28 :             sar = ist->st->sample_aspect_ratio;
    3143             :         else
    3144          88 :             sar = par_src->sample_aspect_ratio;
    3145         116 :         ost->st->sample_aspect_ratio = par_dst->sample_aspect_ratio = sar;
    3146         116 :         ost->st->avg_frame_rate = ist->st->avg_frame_rate;
    3147         116 :         ost->st->r_frame_rate = ist->st->r_frame_rate;
    3148         116 :         break;
    3149             :     }
    3150             : 
    3151         220 :     ost->mux_timebase = ist->st->time_base;
    3152             : 
    3153         220 :     return 0;
    3154             : }
    3155             : 
    3156        5293 : static void set_encoder_id(OutputFile *of, OutputStream *ost)
    3157             : {
    3158             :     AVDictionaryEntry *e;
    3159             : 
    3160             :     uint8_t *encoder_string;
    3161             :     int encoder_string_len;
    3162        5293 :     int format_flags = 0;
    3163        5293 :     int codec_flags = 0;
    3164             : 
    3165        5293 :     if (av_dict_get(ost->st->metadata, "encoder",  NULL, 0))
    3166           0 :         return;
    3167             : 
    3168        5293 :     e = av_dict_get(of->opts, "fflags", NULL, 0);
    3169        5293 :     if (e) {
    3170        4484 :         const AVOption *o = av_opt_find(of->ctx, "fflags", NULL, 0, 0);
    3171        4484 :         if (!o)
    3172           0 :             return;
    3173        4484 :         av_opt_eval_flags(of->ctx, o, e->value, &format_flags);
    3174             :     }
    3175        5293 :     e = av_dict_get(ost->encoder_opts, "flags", NULL, 0);
    3176        5293 :     if (e) {
    3177        4441 :         const AVOption *o = av_opt_find(ost->enc_ctx, "flags", NULL, 0, 0);
    3178        4441 :         if (!o)
    3179           0 :             return;
    3180        4441 :         av_opt_eval_flags(ost->enc_ctx, o, e->value, &codec_flags);
    3181             :     }
    3182             : 
    3183        5293 :     encoder_string_len = sizeof(LIBAVCODEC_IDENT) + strlen(ost->enc->name) + 2;
    3184        5293 :     encoder_string     = av_mallocz(encoder_string_len);
    3185        5293 :     if (!encoder_string)
    3186           0 :         exit_program(1);
    3187             : 
    3188        5293 :     if (!(format_flags & AVFMT_FLAG_BITEXACT) && !(codec_flags & AV_CODEC_FLAG_BITEXACT))
    3189         802 :         av_strlcpy(encoder_string, LIBAVCODEC_IDENT " ", encoder_string_len);
    3190             :     else
    3191        4491 :         av_strlcpy(encoder_string, "Lavc ", encoder_string_len);
    3192        5293 :     av_strlcat(encoder_string, ost->enc->name, encoder_string_len);
    3193        5293 :     av_dict_set(&ost->st->metadata, "encoder",  encoder_string,
    3194             :                 AV_DICT_DONT_STRDUP_VAL | AV_DICT_DONT_OVERWRITE);
    3195             : }
    3196             : 
    3197           1 : static void parse_forced_key_frames(char *kf, OutputStream *ost,
    3198             :                                     AVCodecContext *avctx)
    3199             : {
    3200             :     char *p;
    3201           1 :     int n = 1, i, size, index = 0;
    3202             :     int64_t t, *pts;
    3203             : 
    3204          14 :     for (p = kf; *p; p++)
    3205          13 :         if (*p == ',')
    3206           1 :             n++;
    3207           1 :     size = n;
    3208           1 :     pts = av_malloc_array(size, sizeof(*pts));
    3209           1 :     if (!pts) {
    3210           0 :         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
    3211           0 :         exit_program(1);
    3212             :     }
    3213             : 
    3214           1 :     p = kf;
    3215           3 :     for (i = 0; i < n; i++) {
    3216           2 :         char *next = strchr(p, ',');
    3217             : 
    3218           2 :         if (next)
    3219           1 :             *next++ = 0;
    3220             : 
    3221           2 :         if (!memcmp(p, "chapters", 8)) {
    3222             : 
    3223           0 :             AVFormatContext *avf = output_files[ost->file_index]->ctx;
    3224             :             int j;
    3225             : 
    3226           0 :             if (avf->nb_chapters > INT_MAX - size ||
    3227           0 :                 !(pts = av_realloc_f(pts, size += avf->nb_chapters - 1,
    3228             :                                      sizeof(*pts)))) {
    3229           0 :                 av_log(NULL, AV_LOG_FATAL,
    3230             :                        "Could not allocate forced key frames array.\n");
    3231           0 :                 exit_program(1);
    3232             :             }
    3233           0 :             t = p[8] ? parse_time_or_die("force_key_frames", p + 8, 1) : 0;
    3234           0 :             t = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
    3235             : 
    3236           0 :             for (j = 0; j < avf->nb_chapters; j++) {
    3237           0 :                 AVChapter *c = avf->chapters[j];
    3238             :                 av_assert1(index < size);
    3239           0 :                 pts[index++] = av_rescale_q(c->start, c->time_base,
    3240           0 :                                             avctx->time_base) + t;
    3241             :             }
    3242             : 
    3243             :         } else {
    3244             : 
    3245           2 :             t = parse_time_or_die("force_key_frames", p, 1);
    3246             :             av_assert1(index < size);
    3247           2 :             pts[index++] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
    3248             : 
    3249             :         }
    3250             : 
    3251           2 :         p = next;
    3252             :     }
    3253             : 
    3254           1 :     av_assert0(index == size);
    3255           1 :     qsort(pts, size, sizeof(*pts), compare_int64);
    3256           1 :     ost->forced_kf_count = size;
    3257           1 :     ost->forced_kf_pts   = pts;
    3258           1 : }
    3259             : 
    3260        5264 : static void init_encoder_time_base(OutputStream *ost, AVRational default_time_base)
    3261             : {
    3262        5264 :     InputStream *ist = get_input_stream(ost);
    3263        5264 :     AVCodecContext *enc_ctx = ost->enc_ctx;
    3264             :     AVFormatContext *oc;
    3265             : 
    3266        5264 :     if (ost->enc_timebase.num > 0) {
    3267           0 :         enc_ctx->time_base = ost->enc_timebase;
    3268           0 :         return;
    3269             :     }
    3270             : 
    3271        5264 :     if (ost->enc_timebase.num < 0) {
    3272           0 :         if (ist) {
    3273           0 :             enc_ctx->time_base = ist->st->time_base;
    3274           0 :             return;
    3275             :         }
    3276             : 
    3277           0 :         oc = output_files[ost->file_index]->ctx;
    3278           0 :         av_log(oc, AV_LOG_WARNING, "Input stream data not available, using default time base\n");
    3279             :     }
    3280             : 
    3281        5264 :     enc_ctx->time_base = default_time_base;
    3282             : }
    3283             : 
    3284        5293 : static int init_output_stream_encode(OutputStream *ost)
    3285             : {
    3286        5293 :     InputStream *ist = get_input_stream(ost);
    3287        5293 :     AVCodecContext *enc_ctx = ost->enc_ctx;
    3288        5293 :     AVCodecContext *dec_ctx = NULL;
    3289        5293 :     AVFormatContext *oc = output_files[ost->file_index]->ctx;
    3290             :     int j, ret;
    3291             : 
    3292        5293 :     set_encoder_id(output_files[ost->file_index], ost);
    3293             : 
    3294             :     // Muxers use AV_PKT_DATA_DISPLAYMATRIX to signal rotation. On the other
    3295             :     // hand, the legacy API makes demuxers set "rotate" metadata entries,
    3296             :     // which have to be filtered out to prevent leaking them to output files.
    3297        5293 :     av_dict_set(&ost->st->metadata, "rotate", NULL, 0);
    3298             : 
    3299        5293 :     if (ist) {
    3300        5250 :         ost->st->disposition          = ist->st->disposition;
    3301             : 
    3302        5250 :         dec_ctx = ist->dec_ctx;
    3303             : 
    3304        5250 :         enc_ctx->chroma_sample_location = dec_ctx->chroma_sample_location;
    3305             :     } else {
    3306          90 :         for (j = 0; j < oc->nb_streams; j++) {
    3307          47 :             AVStream *st = oc->streams[j];
    3308          47 :             if (st != ost->st && st->codecpar->codec_type == ost->st->codecpar->codec_type)
    3309           0 :                 break;
    3310             :         }
    3311          43 :         if (j == oc->nb_streams)
    3312          79 :             if (ost->st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO ||
    3313          36 :                 ost->st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
    3314          43 :                 ost->st->disposition = AV_DISPOSITION_DEFAULT;
    3315             :     }
    3316             : 
    3317        5293 :     if (enc_ctx->codec_type == AVMEDIA_TYPE_VIDEO) {
    3318        4202 :         if (!ost->frame_rate.num)
    3319        4183 :             ost->frame_rate = av_buffersink_get_frame_rate(ost->filter->filter);
    3320        4202 :         if (ist && !ost->frame_rate.num)
    3321           0 :             ost->frame_rate = ist->framerate;
    3322        4202 :         if (ist && !ost->frame_rate.num)
    3323           0 :             ost->frame_rate = ist->st->r_frame_rate;
    3324        4202 :         if (ist && !ost->frame_rate.num) {
    3325           0 :             ost->frame_rate = (AVRational){25, 1};
    3326           0 :             av_log(NULL, AV_LOG_WARNING,
    3327             :                    "No information "
    3328             :                    "about the input framerate is available. Falling "
    3329             :                    "back to a default value of 25fps for output stream #%d:%d. Use the -r option "
    3330             :                    "if you want a different framerate.\n",
    3331             :                    ost->file_index, ost->index);
    3332             :         }
    3333             : //      ost->frame_rate = ist->st->avg_frame_rate.num ? ist->st->avg_frame_rate : (AVRational){25, 1};
    3334        4202 :         if (ost->enc->supported_framerates && !ost->force_fps) {
    3335          49 :             int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
    3336          49 :             ost->frame_rate = ost->enc->supported_framerates[idx];
    3337             :         }
    3338             :         // reduce frame rate for mpeg4 to be within the spec limits
    3339        4202 :         if (enc_ctx->codec_id == AV_CODEC_ID_MPEG4) {
    3340         116 :             av_reduce(&ost->frame_rate.num, &ost->frame_rate.den,
    3341         116 :                       ost->frame_rate.num, ost->frame_rate.den, 65535);
    3342             :         }
    3343             :     }
    3344             : 
    3345        5293 :     switch (enc_ctx->codec_type) {
    3346        1062 :     case AVMEDIA_TYPE_AUDIO:
    3347        1062 :         enc_ctx->sample_fmt     = av_buffersink_get_format(ost->filter->filter);
    3348        1062 :         if (dec_ctx)
    3349        1055 :             enc_ctx->bits_per_raw_sample = FFMIN(dec_ctx->bits_per_raw_sample,
    3350             :                                                  av_get_bytes_per_sample(enc_ctx->sample_fmt) << 3);
    3351        1062 :         enc_ctx->sample_rate    = av_buffersink_get_sample_rate(ost->filter->filter);
    3352        1062 :         enc_ctx->channel_layout = av_buffersink_get_channel_layout(ost->filter->filter);
    3353        1062 :         enc_ctx->channels       = av_buffersink_get_channels(ost->filter->filter);
    3354             : 
    3355        1062 :         init_encoder_time_base(ost, av_make_q(1, enc_ctx->sample_rate));
    3356        1062 :         break;
    3357             : 
    3358        4202 :     case AVMEDIA_TYPE_VIDEO:
    3359        4202 :         init_encoder_time_base(ost, av_inv_q(ost->frame_rate));
    3360             : 
    3361        4202 :         if (!(enc_ctx->time_base.num && enc_ctx->time_base.den))
    3362           0 :             enc_ctx->time_base = av_buffersink_get_time_base(ost->filter->filter);
    3363        4202 :         if (   av_q2d(enc_ctx->time_base) < 0.001 && video_sync_method != VSYNC_PASSTHROUGH
    3364           2 :            && (video_sync_method == VSYNC_CFR || video_sync_method == VSYNC_VSCFR || (video_sync_method == VSYNC_AUTO && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
    3365           0 :             av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not efficiently supporting it.\n"
    3366             :                                        "Please consider specifying a lower framerate, a different muxer or -vsync 2\n");
    3367             :         }
    3368        4202 :         for (j = 0; j < ost->forced_kf_count; j++)
    3369           0 :             ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
    3370           0 :                                                  AV_TIME_BASE_Q,
    3371             :                                                  enc_ctx->time_base);
    3372             : 
    3373        4202 :         enc_ctx->width  = av_buffersink_get_w(ost->filter->filter);
    3374        4202 :         enc_ctx->height = av_buffersink_get_h(ost->filter->filter);
    3375        8404 :         enc_ctx->sample_aspect_ratio = ost->st->sample_aspect_ratio =
    3376        4202 :             ost->frame_aspect_ratio.num ? // overridden by the -aspect cli option
    3377        8404 :             av_mul_q(ost->frame_aspect_ratio, (AVRational){ enc_ctx->height, enc_ctx->width }) :
    3378        4202 :             av_buffersink_get_sample_aspect_ratio(ost->filter->filter);
    3379             : 
    3380        4202 :         enc_ctx->pix_fmt = av_buffersink_get_format(ost->filter->filter);
    3381        4202 :         if (dec_ctx)
    3382        4166 :             enc_ctx->bits_per_raw_sample = FFMIN(dec_ctx->bits_per_raw_sample,
    3383             :                                                  av_pix_fmt_desc_get(enc_ctx->pix_fmt)->comp[0].depth);
    3384             : 
    3385        4202 :         enc_ctx->framerate = ost->frame_rate;
    3386             : 
    3387        4202 :         ost->st->avg_frame_rate = ost->frame_rate;
    3388             : 
    3389        8368 :         if (!dec_ctx ||
    3390        7748 :             enc_ctx->width   != dec_ctx->width  ||
    3391        6964 :             enc_ctx->height  != dec_ctx->height ||
    3392        3382 :             enc_ctx->pix_fmt != dec_ctx->pix_fmt) {
    3393        2665 :             enc_ctx->bits_per_raw_sample = frame_bits_per_raw_sample;
    3394             :         }
    3395             : 
    3396        4202 :         if (ost->forced_keyframes) {
    3397           1 :             if (!strncmp(ost->forced_keyframes, "expr:", 5)) {
    3398           0 :                 ret = av_expr_parse(&ost->forced_keyframes_pexpr, ost->forced_keyframes+5,
    3399             :                                     forced_keyframes_const_names, NULL, NULL, NULL, NULL, 0, NULL);
    3400           0 :                 if (ret < 0) {
    3401           0 :                     av_log(NULL, AV_LOG_ERROR,
    3402           0 :                            "Invalid force_key_frames expression '%s'\n", ost->forced_keyframes+5);
    3403           0 :                     return ret;
    3404             :                 }
    3405           0 :                 ost->forced_keyframes_expr_const_values[FKF_N] = 0;
    3406           0 :                 ost->forced_keyframes_expr_const_values[FKF_N_FORCED] = 0;
    3407           0 :                 ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N] = NAN;
    3408           0 :                 ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T] = NAN;
    3409             : 
    3410             :             // Don't parse the 'forced_keyframes' in case of 'keep-source-keyframes',
    3411             :             // parse it only for static kf timings
    3412           1 :             } else if(strncmp(ost->forced_keyframes, "source", 6)) {
    3413           1 :                 parse_forced_key_frames(ost->forced_keyframes, ost, ost->enc_ctx);
    3414             :             }
    3415             :         }
    3416        4202 :         break;
    3417          29 :     case AVMEDIA_TYPE_SUBTITLE:
    3418          29 :         enc_ctx->time_base = AV_TIME_BASE_Q;
    3419          29 :         if (!enc_ctx->width) {
    3420          29 :             enc_ctx->width     = input_streams[ost->source_index]->st->codecpar->width;
    3421          29 :             enc_ctx->height    = input_streams[ost->source_index]->st->codecpar->height;
    3422             :         }
    3423          29 :         break;
    3424           0 :     case AVMEDIA_TYPE_DATA:
    3425           0 :         break;
    3426           0 :     default:
    3427           0 :         abort();
    3428             :         break;
    3429             :     }
    3430             : 
    3431        5293 :     ost->mux_timebase = enc_ctx->time_base;
    3432             : 
    3433        5293 :     return 0;
    3434             : }
    3435             : 
    3436        5514 : static int init_output_stream(OutputStream *ost, char *error, int error_len)
    3437             : {
    3438        5514 :     int ret = 0;
    3439             : 
    3440        5514 :     if (ost->encoding_needed) {
    3441        5293 :         AVCodec      *codec = ost->enc;
    3442        5293 :         AVCodecContext *dec = NULL;
    3443             :         InputStream *ist;
    3444             : 
    3445        5293 :         ret = init_output_stream_encode(ost);
    3446        5293 :         if (ret < 0)
    3447           0 :             return ret;
    3448             : 
    3449        5293 :         if ((ist = get_input_stream(ost)))
    3450        5250 :             dec = ist->dec_ctx;
    3451        5293 :         if (dec && dec->subtitle_header) {
    3452             :             /* ASS code assumes this buffer is null terminated so add extra byte. */
    3453          28 :             ost->enc_ctx->subtitle_header = av_mallocz(dec->subtitle_header_size + 1);
    3454          28 :             if (!ost->enc_ctx->subtitle_header)
    3455           0 :                 return AVERROR(ENOMEM);
    3456          28 :             memcpy(ost->enc_ctx->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
    3457          28 :             ost->enc_ctx->subtitle_header_size = dec->subtitle_header_size;
    3458             :         }
    3459        5293 :         if (!av_dict_get(ost->encoder_opts, "threads", NULL, 0))
    3460        2366 :             av_dict_set(&ost->encoder_opts, "threads", "auto", 0);
    3461        6355 :         if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
    3462        2085 :             !codec->defaults &&
    3463        1981 :             !av_dict_get(ost->encoder_opts, "b", NULL, 0) &&
    3464         958 :             !av_dict_get(ost->encoder_opts, "ab", NULL, 0))
    3465         958 :             av_dict_set(&ost->encoder_opts, "b", "128000", 0);
    3466             : 
    3467        5293 :         if (ost->filter && av_buffersink_get_hw_frames_ctx(ost->filter->filter) &&
    3468           0 :             ((AVHWFramesContext*)av_buffersink_get_hw_frames_ctx(ost->filter->filter)->data)->format ==
    3469           0 :             av_buffersink_get_format(ost->filter->filter)) {
    3470           0 :             ost->enc_ctx->hw_frames_ctx = av_buffer_ref(av_buffersink_get_hw_frames_ctx(ost->filter->filter));
    3471           0 :             if (!ost->enc_ctx->hw_frames_ctx)
    3472           0 :                 return AVERROR(ENOMEM);
    3473             :         } else {
    3474        5293 :             ret = hw_device_setup_for_encode(ost);
    3475        5293 :             if (ret < 0) {
    3476           0 :                 snprintf(error, error_len, "Device setup failed for "
    3477             :                          "encoder on output stream #%d:%d : %s",
    3478           0 :                      ost->file_index, ost->index, av_err2str(ret));
    3479           0 :                 return ret;
    3480             :             }
    3481             :         }
    3482             : 
    3483        5293 :         if ((ret = avcodec_open2(ost->enc_ctx, codec, &ost->encoder_opts)) < 0) {
    3484           0 :             if (ret == AVERROR_EXPERIMENTAL)
    3485           0 :                 abort_codec_experimental(codec, 1);
    3486           0 :             snprintf(error, error_len,
    3487             :                      "Error while opening encoder for output stream #%d:%d - "
    3488             :                      "maybe incorrect parameters such as bit_rate, rate, width or height",
    3489             :                     ost->file_index, ost->index);
    3490           0 :             return ret;
    3491             :         }
    3492        6355 :         if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
    3493        1062 :             !(ost->enc->capabilities & AV_CODEC_CAP_VARIABLE_FRAME_SIZE))
    3494          86 :             av_buffersink_set_frame_size(ost->filter->filter,
    3495          86 :                                             ost->enc_ctx->frame_size);
    3496        5293 :         assert_avoptions(ost->encoder_opts);
    3497        5293 :         if (ost->enc_ctx->bit_rate && ost->enc_ctx->bit_rate < 1000)
    3498           0 :             av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
    3499             :                                          " It takes bits/s as argument, not kbits/s\n");
    3500             : 
    3501        5293 :         ret = avcodec_parameters_from_context(ost->st->codecpar, ost->enc_ctx);
    3502        5293 :         if (ret < 0) {
    3503           0 :             av_log(NULL, AV_LOG_FATAL,
    3504             :                    "Error initializing the output stream codec context.\n");
    3505           0 :             exit_program(1);
    3506             :         }
    3507             :         /*
    3508             :          * FIXME: ost->st->codec should't be needed here anymore.
    3509             :          */
    3510        5293 :         ret = avcodec_copy_context(ost->st->codec, ost->enc_ctx);
    3511        5293 :         if (ret < 0)
    3512           0 :             return ret;
    3513             : 
    3514        5293 :         if (ost->enc_ctx->nb_coded_side_data) {
    3515             :             int i;
    3516             : 
    3517         366 :             for (i = 0; i < ost->enc_ctx->nb_coded_side_data; i++) {
    3518         183 :                 const AVPacketSideData *sd_src = &ost->enc_ctx->coded_side_data[i];
    3519             :                 uint8_t *dst_data;
    3520             : 
    3521         183 :                 dst_data = av_stream_new_side_data(ost->st, sd_src->type, sd_src->size);
    3522         183 :                 if (!dst_data)
    3523           0 :                     return AVERROR(ENOMEM);
    3524         183 :                 memcpy(dst_data, sd_src->data, sd_src->size);
    3525             :             }
    3526             :         }
    3527             : 
    3528             :         /*
    3529             :          * Add global input side data. For now this is naive, and copies it
    3530             :          * from the input stream's global side data. All side data should
    3531             :          * really be funneled over AVFrame and libavfilter, then added back to
    3532             :          * packet side data, and then potentially using the first packet for
    3533             :          * global side data.
    3534             :          */
    3535        5293 :         if (ist) {
    3536             :             int i;
    3537        5459 :             for (i = 0; i < ist->st->nb_side_data; i++) {
    3538         209 :                 AVPacketSideData *sd = &ist->st->side_data[i];
    3539         209 :                 uint8_t *dst = av_stream_new_side_data(ost->st, sd->type, sd->size);
    3540         209 :                 if (!dst)
    3541           0 :                     return AVERROR(ENOMEM);
    3542         209 :                 memcpy(dst, sd->data, sd->size);
    3543         209 :                 if (ist->autorotate && sd->type == AV_PKT_DATA_DISPLAYMATRIX)
    3544           0 :                     av_display_rotation_set((uint32_t *)dst, 0);
    3545             :             }
    3546             :         }
    3547             : 
    3548             :         // copy timebase while removing common factors
    3549        5293 :         if (ost->st->time_base.num <= 0 || ost->st->time_base.den <= 0)
    3550        5293 :             ost->st->time_base = av_add_q(ost->enc_ctx->time_base, (AVRational){0, 1});
    3551             : 
    3552             :         // copy estimated duration as a hint to the muxer
    3553        5293 :         if (ost->st->duration <= 0 && ist && ist->st->duration > 0)
    3554        4152 :             ost->st->duration = av_rescale_q(ist->st->duration, ist->st->time_base, ost->st->time_base);
    3555             : 
    3556        5293 :         ost->st->codec->codec= ost->enc_ctx->codec;
    3557         221 :     } else if (ost->stream_copy) {
    3558         220 :         ret = init_output_stream_streamcopy(ost);
    3559         220 :         if (ret < 0)
    3560           0 :             return ret;
    3561             : 
    3562             :         /*
    3563             :          * FIXME: will the codec context used by the parser during streamcopy
    3564             :          * This should go away with the new parser API.
    3565             :          */
    3566         220 :         ret = avcodec_parameters_to_context(ost->parser_avctx, ost->st->codecpar);
    3567         220 :         if (ret < 0)
    3568           0 :             return ret;
    3569             :     }
    3570             : 
    3571             :     // parse user provided disposition, and update stream values
    3572        5514 :     if (ost->disposition) {
    3573             :         static const AVOption opts[] = {
    3574             :             { "disposition"         , NULL, 0, AV_OPT_TYPE_FLAGS, { .i64 = 0 }, INT64_MIN, INT64_MAX, .unit = "flags" },
    3575             :             { "default"             , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_DEFAULT           },    .unit = "flags" },
    3576             :             { "dub"                 , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_DUB               },    .unit = "flags" },
    3577             :             { "original"            , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_ORIGINAL          },    .unit = "flags" },
    3578             :             { "comment"             , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_COMMENT           },    .unit = "flags" },
    3579             :             { "lyrics"              , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_LYRICS            },    .unit = "flags" },
    3580             :             { "karaoke"             , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_KARAOKE           },    .unit = "flags" },
    3581             :             { "forced"              , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_FORCED            },    .unit = "flags" },
    3582             :             { "hearing_impaired"    , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_HEARING_IMPAIRED  },    .unit = "flags" },
    3583             :             { "visual_impaired"     , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_VISUAL_IMPAIRED   },    .unit = "flags" },
    3584             :             { "clean_effects"       , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_CLEAN_EFFECTS     },    .unit = "flags" },
    3585             :             { "captions"            , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_CAPTIONS          },    .unit = "flags" },
    3586             :             { "descriptions"        , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_DESCRIPTIONS      },    .unit = "flags" },
    3587             :             { "metadata"            , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_METADATA          },    .unit = "flags" },
    3588             :             { NULL },
    3589             :         };
    3590             :         static const AVClass class = {
    3591             :             .class_name = "",
    3592             :             .item_name  = av_default_item_name,
    3593             :             .option     = opts,
    3594             :             .version    = LIBAVUTIL_VERSION_INT,
    3595             :         };
    3596           0 :         const AVClass *pclass = &class;
    3597             : 
    3598           0 :         ret = av_opt_eval_flags(&pclass, &opts[0], ost->disposition, &ost->st->disposition);
    3599           0 :         if (ret < 0)
    3600           0 :             return ret;
    3601             :     }
    3602             : 
    3603             :     /* initialize bitstream filters for the output stream
    3604             :      * needs to be done here, because the codec id for streamcopy is not
    3605             :      * known until now */
    3606        5514 :     ret = init_output_bsfs(ost);
    3607        5514 :     if (ret < 0)
    3608           0 :         return ret;
    3609             : 
    3610        5514 :     ost->initialized = 1;
    3611             : 
    3612        5514 :     ret = check_init_output_file(output_files[ost->file_index], ost->file_index);
    3613        5514 :     if (ret < 0)
    3614           0 :         return ret;
    3615             : 
    3616        5514 :     return ret;
    3617             : }
    3618             : 
    3619           0 : static void report_new_stream(int input_index, AVPacket *pkt)
    3620             : {
    3621           0 :     InputFile *file = input_files[input_index];
    3622           0 :     AVStream *st = file->ctx->streams[pkt->stream_index];
    3623             : 
    3624           0 :     if (pkt->stream_index < file->nb_streams_warn)
    3625           0 :         return;
    3626           0 :     av_log(file->ctx, AV_LOG_WARNING,
    3627             :            "New %s stream %d:%d at pos:%"PRId64" and DTS:%ss\n",
    3628           0 :            av_get_media_type_string(st->codecpar->codec_type),
    3629             :            input_index, pkt->stream_index,
    3630           0 :            pkt->pos, av_ts2timestr(pkt->dts, &st->time_base));
    3631           0 :     file->nb_streams_warn = pkt->stream_index + 1;
    3632             : }
    3633             : 
    3634        5376 : static int transcode_init(void)
    3635             : {
    3636        5376 :     int ret = 0, i, j, k;
    3637             :     AVFormatContext *oc;
    3638             :     OutputStream *ost;
    3639             :     InputStream *ist;
    3640        5376 :     char error[1024] = {0};
    3641             : 
    3642       10638 :     for (i = 0; i < nb_filtergraphs; i++) {
    3643        5262 :         FilterGraph *fg = filtergraphs[i];
    3644       10526 :         for (j = 0; j < fg->nb_outputs; j++) {
    3645        5264 :             OutputFilter *ofilter = fg->outputs[j];
    3646        5264 :             if (!ofilter->ost || ofilter->ost->source_index >= 0)
    3647        5205 :                 continue;
    3648          59 :             if (fg->nb_inputs != 1)
    3649          43 :                 continue;
    3650          17 :             for (k = nb_input_streams-1; k >= 0 ; k--)
    3651          17 :                 if (fg->inputs[0]->ist == input_streams[k])
    3652          16 :                     break;
    3653          16 :             ofilter->ost->source_index = k;
    3654             :         }
    3655             :     }
    3656             : 
    3657             :     /* init framerate emulation */
    3658       10800 :     for (i = 0; i < nb_input_files; i++) {
    3659        5424 :         InputFile *ifile = input_files[i];
    3660        5424 :         if (ifile->rate_emu)
    3661           0 :             for (j = 0; j < ifile->nb_streams; j++)
    3662           0 :                 input_streams[j + ifile->ist_index]->start = av_gettime_relative();
    3663             :     }
    3664             : 
    3665             :     /* init input streams */
    3666       11105 :     for (i = 0; i < nb_input_streams; i++)
    3667        5729 :         if ((ret = init_input_stream(i, error, sizeof(error))) < 0) {
    3668           0 :             for (i = 0; i < nb_output_streams; i++) {
    3669           0 :                 ost = output_streams[i];
    3670           0 :                 avcodec_close(ost->enc_ctx);
    3671             :             }
    3672           0 :             goto dump_format;
    3673             :         }
    3674             : 
    3675             :     /* open each encoder */
    3676       10890 :     for (i = 0; i < nb_output_streams; i++) {
    3677             :         // skip streams fed from filtergraphs until we have a frame for them
    3678        5514 :         if (output_streams[i]->filter)
    3679        5264 :             continue;
    3680             : 
    3681         250 :         ret = init_output_stream(output_streams[i], error, sizeof(error));
    3682         250 :         if (ret < 0)
    3683           0 :             goto dump_format;
    3684             :     }
    3685             : 
    3686             :     /* discard unused programs */
    3687       10800 :     for (i = 0; i < nb_input_files; i++) {
    3688        5424 :         InputFile *ifile = input_files[i];
    3689        5449 :         for (j = 0; j < ifile->ctx->nb_programs; j++) {
    3690          25 :             AVProgram *p = ifile->ctx->programs[j];
    3691          25 :             int discard  = AVDISCARD_ALL;
    3692             : 
    3693          25 :             for (k = 0; k < p->nb_stream_indexes; k++)
    3694          25 :                 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
    3695          25 :                     discard = AVDISCARD_DEFAULT;
    3696          25 :                     break;
    3697             :                 }
    3698          25 :             p->discard = discard;
    3699             :         }
    3700             :     }
    3701             : 
    3702             :     /* write headers for files with no streams */
    3703       10753 :     for (i = 0; i < nb_output_files; i++) {
    3704        5377 :         oc = output_files[i]->ctx;
    3705        5377 :         if (oc->oformat->flags & AVFMT_NOSTREAMS && oc->nb_streams == 0) {
    3706           1 :             ret = check_init_output_file(output_files[i], i);
    3707           1 :             if (ret < 0)
    3708           0 :                 goto dump_format;
    3709             :         }
    3710             :     }
    3711             : 
    3712        5376 :  dump_format:
    3713             :     /* dump the stream mapping */
    3714        5376 :     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
    3715       11105 :     for (i = 0; i < nb_input_streams; i++) {
    3716        5729 :         ist = input_streams[i];
    3717             : 
    3718       10990 :         for (j = 0; j < ist->nb_filters; j++) {
    3719        5261 :             if (!filtergraph_is_simple(ist->filters[j]->graph)) {
    3720         224 :                 av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d (%s) -> %s",
    3721         168 :                        ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
    3722          56 :                        ist->filters[j]->name);
    3723          56 :                 if (nb_filtergraphs > 1)
    3724           0 :                     av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
    3725          56 :                 av_log(NULL, AV_LOG_INFO, "\n");
    3726             :             }
    3727             :         }
    3728             :     }
    3729             : 
    3730       10890 :     for (i = 0; i < nb_output_streams; i++) {
    3731        5514 :         ost = output_streams[i];
    3732             : 
    3733        5514 :         if (ost->attachment_filename) {
    3734             :             /* an attached file */
    3735           1 :             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
    3736             :                    ost->attachment_filename, ost->file_index, ost->index);
    3737           1 :             continue;
    3738             :         }
    3739             : 
    3740        5513 :         if (ost->filter && !filtergraph_is_simple(ost->filter->graph)) {
    3741             :             /* output from a complex graph */
    3742          59 :             av_log(NULL, AV_LOG_INFO, "  %s", ost->filter->name);
    3743          59 :             if (nb_filtergraphs > 1)
    3744           0 :                 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
    3745             : 
    3746         118 :             av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
    3747         118 :                    ost->index, ost->enc ? ost->enc->name : "?");
    3748          59 :             continue;
    3749             :         }
    3750             : 
    3751       16362 :         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
    3752        5454 :                input_streams[ost->source_index]->file_index,
    3753        5454 :                input_streams[ost->source_index]->st->index,
    3754             :                ost->file_index,
    3755             :                ost->index);
    3756        5454 :         if (ost->sync_ist != input_streams[ost->source_index])
    3757           0 :             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
    3758           0 :                    ost->sync_ist->file_index,
    3759           0 :                    ost->sync_ist->st->index);
    3760        5454 :         if (ost->stream_copy)
    3761         220 :             av_log(NULL, AV_LOG_INFO, " (copy)");
    3762             :         else {
    3763        5234 :             const AVCodec *in_codec    = input_streams[ost->source_index]->dec;
    3764        5234 :             const AVCodec *out_codec   = ost->enc;
    3765        5234 :             const char *decoder_name   = "?";
    3766        5234 :             const char *in_codec_name  = "?";
    3767        5234 :             const char *encoder_name   = "?";
    3768        5234 :             const char *out_codec_name = "?";
    3769             :             const AVCodecDescriptor *desc;
    3770             : 
    3771        5234 :             if (in_codec) {
    3772        5234 :                 decoder_name  = in_codec->name;
    3773        5234 :                 desc = avcodec_descriptor_get(in_codec->id);
    3774        5234 :                 if (desc)
    3775        5234 :                     in_codec_name = desc->name;
    3776        5234 :                 if (!strcmp(decoder_name, in_codec_name))
    3777        5082 :                     decoder_name = "native";
    3778             :             }
    3779             : 
    3780        5234 :             if (out_codec) {
    3781        5234 :                 encoder_name   = out_codec->name;
    3782        5234 :                 desc = avcodec_descriptor_get(out_codec->id);
    3783        5234 :                 if (desc)
    3784        5234 :                     out_codec_name = desc->name;
    3785        5234 :                 if (!strcmp(encoder_name, out_codec_name))
    3786        5147 :                     encoder_name = "native";
    3787             :             }
    3788             : 
    3789        5234 :             av_log(NULL, AV_LOG_INFO, " (%s (%s) -> %s (%s))",
    3790             :                    in_codec_name, decoder_name,
    3791             :                    out_codec_name, encoder_name);
    3792             :         }
    3793        5454 :         av_log(NULL, AV_LOG_INFO, "\n");
    3794             :     }
    3795             : 
    3796        5376 :     if (ret) {
    3797           0 :         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
    3798           0 :         return ret;
    3799             :     }
    3800             : 
    3801        5376 :     atomic_store(&transcode_init_done, 1);
    3802             : 
    3803        5376 :     return 0;
    3804             : }
    3805             : 
    3806             : /* Return 1 if there remain streams where more output is wanted, 0 otherwise. */
    3807     1302351 : static int need_output(void)
    3808             : {
    3809             :     int i;
    3810             : 
    3811     1308035 :     for (i = 0; i < nb_output_streams; i++) {
    3812     1302659 :         OutputStream *ost    = output_streams[i];
    3813     1302659 :         OutputFile *of       = output_files[ost->file_index];
    3814     1302659 :         AVFormatContext *os  = output_files[ost->file_index]->ctx;
    3815             : 
    3816     2601641 :         if (ost->finished ||
    3817     2594557 :             (os->pb && avio_tell(os->pb) >= of->limit_filesize))
    3818        3677 :             continue;
    3819     1298982 :         if (ost->frame_number >= ost->max_frames) {
    3820             :             int j;
    3821        4016 :             for (j = 0; j < of->ctx->nb_streams; j++)
    3822        2009 :                 close_output_stream(output_streams[of->ost_index + j]);
    3823        2007 :             continue;
    3824             :         }
    3825             : 
    3826     1296975 :         return 1;
    3827             :     }
    3828             : 
    3829        5376 :     return 0;
    3830             : }
    3831             : 
    3832             : /**
    3833             :  * Select the output stream to process.
    3834             :  *
    3835             :  * @return  selected output stream, or NULL if none available
    3836             :  */
    3837     1296975 : static OutputStream *choose_output(void)
    3838             : {
    3839             :     int i;
    3840     1296975 :     int64_t opts_min = INT64_MAX;
    3841     1296975 :     OutputStream *ost_min = NULL;
    3842             : 
    3843     1703416 :     for (i = 0; i < nb_output_streams; i++) {
    3844     1310529 :         OutputStream *ost = output_streams[i];
    3845     1714936 :         int64_t opts = ost->st->cur_dts == AV_NOPTS_VALUE ? INT64_MIN :
    3846      404407 :                        av_rescale_q(ost->st->cur_dts, ost->st->time_base,
    3847      404407 :                                     AV_TIME_BASE_Q);
    3848     1310529 :         if (ost->st->cur_dts == AV_NOPTS_VALUE)
    3849      906122 :             av_log(NULL, AV_LOG_DEBUG, "cur_dts is invalid (this is harmless if it occurs once at the start per stream)\n");
    3850             : 
    3851     1310529 :         if (!ost->initialized && !ost->inputs_done)
    3852      904088 :             return ost;
    3853             : 
    3854      406441 :         if (!ost->finished && opts < opts_min) {
    3855      397950 :             opts_min = opts;
    3856      397950 :             ost_min  = ost->unavailable ? NULL : ost;
    3857             :         }
    3858             :     }
    3859      392887 :     return ost_min;
    3860             : }
    3861             : 
    3862           0 : static void set_tty_echo(int on)
    3863             : {
    3864             : #if HAVE_TERMIOS_H
    3865             :     struct termios tty;
    3866           0 :     if (tcgetattr(0, &tty) == 0) {
    3867           0 :         if (on) tty.c_lflag |= ECHO;
    3868           0 :         else    tty.c_lflag &= ~ECHO;
    3869           0 :         tcsetattr(0, TCSANOW, &tty);
    3870             :     }
    3871             : #endif
    3872           0 : }
    3873             : 
    3874        3297 : static int check_keyboard_interaction(int64_t cur_time)
    3875             : {
    3876             :     int i, ret, key;
    3877             :     static int64_t last_time;
    3878        3297 :     if (received_nb_signals)
    3879           0 :         return AVERROR_EXIT;
    3880             :     /* read_key() returns 0 on EOF */
    3881        3297 :     if(cur_time - last_time >= 100000 && !run_as_daemon){
    3882          41 :         key =  read_key();
    3883          41 :         last_time = cur_time;
    3884             :     }else
    3885        3256 :         key = -1;
    3886        3297 :     if (key == 'q')
    3887           0 :         return AVERROR_EXIT;
    3888        3297 :     if (key == '+') av_log_set_level(av_log_get_level()+10);
    3889        3297 :     if (key == '-') av_log_set_level(av_log_get_level()-10);
    3890        3297 :     if (key == 's') qp_hist     ^= 1;
    3891        3297 :     if (key == 'h'){
    3892           0 :         if (do_hex_dump){
    3893           0 :             do_hex_dump = do_pkt_dump = 0;
    3894           0 :         } else if(do_pkt_dump){
    3895           0 :             do_hex_dump = 1;
    3896             :         } else
    3897           0 :             do_pkt_dump = 1;
    3898           0 :         av_log_set_level(AV_LOG_DEBUG);
    3899             :     }
    3900        3297 :     if (key == 'c' || key == 'C'){
    3901           0 :         char buf[4096], target[64], command[256], arg[256] = {0};
    3902             :         double time;
    3903           0 :         int k, n = 0;
    3904           0 :         fprintf(stderr, "\nEnter command: <target>|all <time>|-1 <command>[ <argument>]\n");
    3905           0 :         i = 0;
    3906           0 :         set_tty_echo(1);
    3907           0 :         while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
    3908           0 :             if (k > 0)
    3909           0 :                 buf[i++] = k;
    3910           0 :         buf[i] = 0;
    3911           0 :         set_tty_echo(0);
    3912           0 :         fprintf(stderr, "\n");
    3913           0 :         if (k > 0 &&
    3914             :             (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
    3915           0 :             av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
    3916             :                    target, time, command, arg);
    3917           0 :             for (i = 0; i < nb_filtergraphs; i++) {
    3918           0 :                 FilterGraph *fg = filtergraphs[i];
    3919           0 :                 if (fg->graph) {
    3920           0 :                     if (time < 0) {
    3921           0 :                         ret = avfilter_graph_send_command(fg->graph, target, command, arg, buf, sizeof(buf),
    3922             :                                                           key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
    3923           0 :                         fprintf(stderr, "Command reply for stream %d: ret:%d res:\n%s", i, ret, buf);
    3924           0 :                     } else if (key == 'c') {
    3925           0 :                         fprintf(stderr, "Queuing commands only on filters supporting the specific command is unsupported\n");
    3926           0 :                         ret = AVERROR_PATCHWELCOME;
    3927             :                     } else {
    3928           0 :                         ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
    3929           0 :                         if (ret < 0)
    3930           0 :                             fprintf(stderr, "Queuing command failed with error %s\n", av_err2str(ret));
    3931             :                     }
    3932             :                 }
    3933             :             }
    3934             :         } else {
    3935           0 :             av_log(NULL, AV_LOG_ERROR,
    3936             :                    "Parse error, at least 3 arguments were expected, "
    3937             :                    "only %d given in string '%s'\n", n, buf);
    3938             :         }
    3939             :     }
    3940        3297 :     if (key == 'd' || key == 'D'){
    3941           0 :         int debug=0;
    3942           0 :         if(key == 'D') {
    3943           0 :             debug = input_streams[0]->st->codec->debug<<1;
    3944           0 :             if(!debug) debug = 1;
    3945           0 :             while(debug & (FF_DEBUG_DCT_COEFF
    3946             : #if FF_API_DEBUG_MV
    3947             :                                              |FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE
    3948             : #endif
    3949             :                                                                                   )) //unsupported, would just crash
    3950           0 :                 debug += debug;
    3951             :         }else{
    3952             :             char buf[32];
    3953           0 :             int k = 0;
    3954           0 :             i = 0;
    3955           0 :             set_tty_echo(1);
    3956           0 :             while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
    3957           0 :                 if (k > 0)
    3958           0 :                     buf[i++] = k;
    3959           0 :             buf[i] = 0;
    3960           0 :             set_tty_echo(0);
    3961           0 :             fprintf(stderr, "\n");
    3962           0 :             if (k <= 0 || sscanf(buf, "%d", &debug)!=1)
    3963           0 :                 fprintf(stderr,"error parsing debug value\n");
    3964             :         }
    3965           0 :         for(i=0;i<nb_input_streams;i++) {
    3966           0 :             input_streams[i]->st->codec->debug = debug;
    3967             :         }
    3968           0 :         for(i=0;i<nb_output_streams;i++) {
    3969           0 :             OutputStream *ost = output_streams[i];
    3970           0 :             ost->enc_ctx->debug = debug;
    3971             :         }
    3972           0 :         if(debug) av_log_set_level(AV_LOG_DEBUG);
    3973           0 :         fprintf(stderr,"debug=%d\n", debug);
    3974             :     }
    3975        3297 :     if (key == '?'){
    3976           0 :         fprintf(stderr, "key    function\n"
    3977             :                         "?      show this help\n"
    3978             :                         "+      increase verbosity\n"
    3979             :                         "-      decrease verbosity\n"
    3980             :                         "c      Send command to first matching filter supporting it\n"
    3981             :                         "C      Send/Queue command to all matching filters\n"
    3982             :                         "D      cycle through available debug modes\n"
    3983             :                         "h      dump packets/hex press to cycle through the 3 states\n"
    3984             :                         "q      quit\n"
    3985             :                         "s      Show QP histogram\n"
    3986             :         );
    3987             :     }
    3988        3297 :     return 0;
    3989             : }
    3990             : 
    3991             : #if HAVE_PTHREADS
    3992         137 : static void *input_thread(void *arg)
    3993             : {
    3994         137 :     InputFile *f = arg;
    3995         137 :     unsigned flags = f->non_blocking ? AV_THREAD_MESSAGE_NONBLOCK : 0;
    3996         137 :     int ret = 0;
    3997             : 
    3998        6600 :     while (1) {
    3999             :         AVPacket pkt;
    4000        6737 :         ret = av_read_frame(f->ctx, &pkt);
    4001             : 
    4002        6737 :         if (ret == AVERROR(EAGAIN)) {
    4003           0 :             av_usleep(10000);
    4004           0 :             continue;
    4005             :         }
    4006        6737 :         if (ret < 0) {
    4007          44 :             av_thread_message_queue_set_err_recv(f->in_thread_queue, ret);
    4008          44 :             break;
    4009             :         }
    4010        6693 :         ret = av_thread_message_queue_send(f->in_thread_queue, &pkt, flags);
    4011        6693 :         if (flags && ret == AVERROR(EAGAIN)) {
    4012          57 :             flags = 0;
    4013          57 :             ret = av_thread_message_queue_send(f->in_thread_queue, &pkt, flags);
    4014          57 :             av_log(f->ctx, AV_LOG_WARNING,
    4015             :                    "Thread message queue blocking; consider raising the "
    4016             :                    "thread_queue_size option (current value: %d)\n",
    4017             :                    f->thread_queue_size);
    4018             :         }
    4019        6693 :         if (ret < 0) {
    4020          93 :             if (ret != AVERROR_EOF)
    4021           0 :                 av_log(f->ctx, AV_LOG_ERROR,
    4022             :                        "Unable to send packet to main thread: %s\n",
    4023           0 :                        av_err2str(ret));
    4024          93 :             av_packet_unref(&pkt);
    4025          93 :             av_thread_message_queue_set_err_recv(f->in_thread_queue, ret);
    4026          93 :             break;
    4027             :         }
    4028             :     }
    4029             : 
    4030         274 :     return NULL;
    4031             : }
    4032             : 
    4033       16129 : static void free_input_threads(void)
    4034             : {
    4035             :     int i;
    4036             : 
    4037       32401 :     for (i = 0; i < nb_input_files; i++) {
    4038       16272 :         InputFile *f = input_files[i];
    4039             :         AVPacket pkt;
    4040             : 
    4041       16272 :         if (!f || !f->in_thread_queue)
    4042       16135 :             continue;
    4043         137 :         av_thread_message_queue_set_err_send(f->in_thread_queue, AVERROR_EOF);
    4044        1010 :         while (av_thread_message_queue_recv(f->in_thread_queue, &pkt, 0) >= 0)
    4045         736 :             av_packet_unref(&pkt);
    4046             : 
    4047         137 :         pthread_join(f->thread, NULL);
    4048         137 :         f->joined = 1;
    4049         137 :         av_thread_message_queue_free(&f->in_thread_queue);
    4050             :     }
    4051       16129 : }
    4052             : 
    4053        5376 : static int init_input_threads(void)
    4054             : {
    4055             :     int i, ret;
    4056             : 
    4057        5376 :     if (nb_input_files == 1)
    4058        5287 :         return 0;
    4059             : 
    4060         226 :     for (i = 0; i < nb_input_files; i++) {
    4061         137 :         InputFile *f = input_files[i];
    4062             : 
    4063         196 :         if (f->ctx->pb ? !f->ctx->pb->seekable :
    4064          59 :             strcmp(f->ctx->iformat->name, "lavfi"))
    4065          58 :             f->non_blocking = 1;
    4066         137 :         ret = av_thread_message_queue_alloc(&f->in_thread_queue,
    4067         137 :                                             f->thread_queue_size, sizeof(AVPacket));
    4068         137 :         if (ret < 0)
    4069           0 :             return ret;
    4070             : 
    4071         137 :         if ((ret = pthread_create(&f->thread, NULL, input_thread, f))) {
    4072           0 :             av_log(NULL, AV_LOG_ERROR, "pthread_create failed: %s. Try to increase `ulimit -v` or decrease `ulimit -s`.\n", strerror(ret));
    4073           0 :             av_thread_message_queue_free(&f->in_thread_queue);
    4074           0 :             return AVERROR(ret);
    4075             :         }
    4076             :     }
    4077          89 :     return 0;
    4078             : }
    4079             : 
    4080      901938 : static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
    4081             : {
    4082      901938 :     return av_thread_message_queue_recv(f->in_thread_queue, pkt,
    4083      901938 :                                         f->non_blocking ?
    4084             :                                         AV_THREAD_MESSAGE_NONBLOCK : 0);
    4085             : }
    4086             : #endif
    4087             : 
    4088     1292619 : static int get_input_packet(InputFile *f, AVPacket *pkt)
    4089             : {
    4090     1292619 :     if (f->rate_emu) {
    4091             :         int i;
    4092           0 :         for (i = 0; i < f->nb_streams; i++) {
    4093           0 :             InputStream *ist = input_streams[f->ist_index + i];
    4094           0 :             int64_t pts = av_rescale(ist->dts, 1000000, AV_TIME_BASE);
    4095           0 :             int64_t now = av_gettime_relative() - ist->start;
    4096           0 :             if (pts > now)
    4097           0 :                 return AVERROR(EAGAIN);
    4098             :         }
    4099             :     }
    4100             : 
    4101             : #if HAVE_PTHREADS
    4102     1292619 :     if (nb_input_files > 1)
    4103      901938 :         return get_input_packet_mt(f, pkt);
    4104             : #endif
    4105      390681 :     return av_read_frame(f->ctx, pkt);
    4106             : }
    4107             : 
    4108           7 : static int got_eagain(void)
    4109             : {
    4110             :     int i;
    4111           7 :     for (i = 0; i < nb_output_streams; i++)
    4112           7 :         if (output_streams[i]->unavailable)
    4113           7 :             return 1;
    4114           0 :     return 0;
    4115             : }
    4116             : 
    4117      393088 : static void reset_eagain(void)
    4118             : {
    4119             :     int i;
    4120      792565 :     for (i = 0; i < nb_input_files; i++)
    4121      399477 :         input_files[i]->eagain = 0;
    4122      799719 :     for (i = 0; i < nb_output_streams; i++)
    4123      406631 :         output_streams[i]->unavailable = 0;
    4124      393088 : }
    4125             : 
    4126             : // set duration to max(tmp, duration) in a proper time base and return duration's time_base
    4127           0 : static AVRational duration_max(int64_t tmp, int64_t *duration, AVRational tmp_time_base,
    4128             :                                 AVRational time_base)
    4129             : {
    4130             :     int ret;
    4131             : 
    4132           0 :     if (!*duration) {
    4133           0 :         *duration = tmp;
    4134           0 :         return tmp_time_base;
    4135             :     }
    4136             : 
    4137           0 :     ret = av_compare_ts(*duration, time_base, tmp, tmp_time_base);
    4138           0 :     if (ret < 0) {
    4139           0 :         *duration = tmp;
    4140           0 :         return tmp_time_base;
    4141             :     }
    4142             : 
    4143           0 :     return time_base;
    4144             : }
    4145             : 
    4146           0 : static int seek_to_start(InputFile *ifile, AVFormatContext *is)
    4147             : {
    4148             :     InputStream *ist;
    4149             :     AVCodecContext *avctx;
    4150           0 :     int i, ret, has_audio = 0;
    4151           0 :     int64_t duration = 0;
    4152             : 
    4153           0 :     ret = av_seek_frame(is, -1, is->start_time, 0);
    4154           0 :     if (ret < 0)
    4155           0 :         return ret;
    4156             : 
    4157           0 :     for (i = 0; i < ifile->nb_streams; i++) {
    4158           0 :         ist   = input_streams[ifile->ist_index + i];
    4159           0 :         avctx = ist->dec_ctx;
    4160             : 
    4161             :         // flush decoders
    4162           0 :         if (ist->decoding_needed) {
    4163           0 :             process_input_packet(ist, NULL, 1);
    4164           0 :             avcodec_flush_buffers(avctx);
    4165             :         }
    4166             : 
    4167             :         /* duration is the length of the last frame in a stream
    4168             :          * when audio stream is present we don't care about
    4169             :          * last video frame length because it's not defined exactly */
    4170           0 :         if (avctx->codec_type == AVMEDIA_TYPE_AUDIO && ist->nb_samples)
    4171           0 :             has_audio = 1;
    4172             :     }
    4173             : 
    4174           0 :     for (i = 0; i < ifile->nb_streams; i++) {
    4175           0 :         ist   = input_streams[ifile->ist_index + i];
    4176           0 :         avctx = ist->dec_ctx;
    4177             : 
    4178           0 :         if (has_audio) {
    4179           0 :             if (avctx->codec_type == AVMEDIA_TYPE_AUDIO && ist->nb_samples) {
    4180           0 :                 AVRational sample_rate = {1, avctx->sample_rate};
    4181             : 
    4182           0 :                 duration = av_rescale_q(ist->nb_samples, sample_rate, ist->st->time_base);
    4183             :             } else
    4184           0 :                 continue;
    4185             :         } else {
    4186           0 :             if (ist->framerate.num) {
    4187           0 :                 duration = av_rescale_q(1, ist->framerate, ist->st->time_base);
    4188           0 :             } else if (ist->st->avg_frame_rate.num) {
    4189           0 :                 duration = av_rescale_q(1, ist->st->avg_frame_rate, ist->st->time_base);
    4190           0 :             } else duration = 1;
    4191             :         }
    4192           0 :         if (!ifile->duration)
    4193           0 :             ifile->time_base = ist->st->time_base;
    4194             :         /* the total duration of the stream, max_pts - min_pts is
    4195             :          * the duration of the stream without the last frame */
    4196           0 :         duration += ist->max_pts - ist->min_pts;
    4197           0 :         ifile->time_base = duration_max(duration, &ifile->duration, ist->st->time_base,
    4198             :                                         ifile->time_base);
    4199             :     }
    4200             : 
    4201           0 :     if (ifile->loop > 0)
    4202           0 :         ifile->loop--;
    4203             : 
    4204           0 :     return ret;
    4205             : }
    4206             : 
    4207             : /*
    4208             :  * Return
    4209             :  * - 0 -- one packet was read and processed
    4210             :  * - AVERROR(EAGAIN) -- no packets were available for selected file,
    4211             :  *   this function should be called again
    4212             :  * - AVERROR_EOF -- this function should not be called again
    4213             :  */
    4214     1292619 : static int process_input(int file_index)
    4215             : {
    4216     1292619 :     InputFile *ifile = input_files[file_index];
    4217             :     AVFormatContext *is;
    4218             :     InputStream *ist;
    4219             :     AVPacket pkt;
    4220             :     int ret, i, j;
    4221             :     int64_t duration;
    4222             :     int64_t pkt_dts;
    4223             : 
    4224     1292619 :     is  = ifile->ctx;
    4225     1292619 :     ret = get_input_packet(ifile, &pkt);
    4226             : 
    4227     1292619 :     if (ret == AVERROR(EAGAIN)) {
    4228      896034 :         ifile->eagain = 1;
    4229      896034 :         return ret;
    4230             :     }
    4231      396585 :     if (ret < 0 && ifile->loop) {
    4232           0 :         if ((ret = seek_to_start(ifile, is)) < 0)
    4233           0 :             return ret;
    4234           0 :         ret = get_input_packet(ifile, &pkt);
    4235           0 :         if (ret == AVERROR(EAGAIN)) {
    4236           0 :             ifile->eagain = 1;
    4237           0 :             return ret;
    4238             :         }
    4239             :     }
    4240      396585 :     if (ret < 0) {
    4241        3504 :         if (ret != AVERROR_EOF) {
    4242          76 :             print_error(is->filename, ret);
    4243          76 :             if (exit_on_error)
    4244           0 :                 exit_program(1);
    4245             :         }
    4246             : 
    4247        6683 :         for (i = 0; i < ifile->nb_streams; i++) {
    4248        3770 :             ist = input_streams[ifile->ist_index + i];
    4249        3770 :             if (ist->decoding_needed) {
    4250        3386 :                 ret = process_input_packet(ist, NULL, 0);
    4251        3386 :                 if (ret>0)
    4252         591 :                     return 0;
    4253             :             }
    4254             : 
    4255             :             /* mark all outputs that don't go through lavfi as finished */
    4256        6617 :             for (j = 0; j < nb_output_streams; j++) {
    4257        3438 :                 OutputStream *ost = output_streams[j];
    4258             : 
    4259        6417 :                 if (ost->source_index == ifile->ist_index + i &&
    4260        5750 :                     (ost->stream_copy || ost->enc->type == AVMEDIA_TYPE_SUBTITLE))
    4261         237 :                     finish_output_stream(ost);
    4262             :             }
    4263             :         }
    4264             : 
    4265        2913 :         ifile->eof_reached = 1;
    4266        2913 :         return AVERROR(EAGAIN);
    4267             :     }
    4268             : 
    4269      393081 :     reset_eagain();
    4270             : 
    4271      393081 :     if (do_pkt_dump) {
    4272           0 :         av_pkt_dump_log2(NULL, AV_LOG_INFO, &pkt, do_hex_dump,
    4273           0 :                          is->streams[pkt.stream_index]);
    4274             :     }
    4275             :     /* the following test is needed in case new streams appear
    4276             :        dynamically in stream : we ignore them */
    4277      393081 :     if (pkt.stream_index >= ifile->nb_streams) {
    4278           0 :         report_new_stream(file_index, &pkt);
    4279           0 :         goto discard_packet;
    4280             :     }
    4281             : 
    4282      393081 :     ist = input_streams[ifile->ist_index + pkt.stream_index];
    4283             : 
    4284      393081 :     ist->data_size += pkt.size;
    4285      393081 :     ist->nb_packets++;
    4286             : 
    4287      393081 :     if (ist->discard)
    4288        7344 :         goto discard_packet;
    4289             : 
    4290      385737 :     if (exit_on_error && (pkt.flags & AV_PKT_FLAG_CORRUPT)) {
    4291           0 :         av_log(NULL, AV_LOG_FATAL, "%s: corrupt input packet in stream %d\n", is->filename, pkt.stream_index);
    4292           0 :         exit_program(1);
    4293             :     }
    4294             : 
    4295      385737 :     if (debug_ts) {
    4296           0 :         av_log(NULL, AV_LOG_INFO, "demuxer -> ist_index:%d type:%s "
    4297             :                "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",
    4298           0 :                ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->dec_ctx->codec_type),
    4299           0 :                av_ts2str(ist->next_dts), av_ts2timestr(ist->next_dts, &AV_TIME_BASE_Q),
    4300           0 :                av_ts2str(ist->next_pts), av_ts2timestr(ist->next_pts, &AV_TIME_BASE_Q),
    4301           0 :                av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
    4302           0 :                av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
    4303           0 :                av_ts2str(input_files[ist->file_index]->ts_offset),
    4304           0 :                av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
    4305             :     }
    4306             : 
    4307      385737 :     if(!ist->wrap_correction_done && is->start_time != AV_NOPTS_VALUE && ist->st->pts_wrap_bits < 64){
    4308             :         int64_t stime, stime2;
    4309             :         // Correcting starttime based on the enabled streams
    4310             :         // 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.
    4311             :         //       so we instead do it here as part of discontinuity handling
    4312         227 :         if (   ist->next_dts == AV_NOPTS_VALUE
    4313         227 :             && ifile->ts_offset == -is->start_time
    4314         225 :             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
    4315          41 :             int64_t new_start_time = INT64_MAX;
    4316         115 :             for (i=0; i<is->nb_streams; i++) {
    4317          74 :                 AVStream *st = is->streams[i];
    4318          74 :                 if(st->discard == AVDISCARD_ALL || st->start_time == AV_NOPTS_VALUE)
    4319          15 :                     continue;
    4320          59 :                 new_start_time = FFMIN(new_start_time, av_rescale_q(st->start_time, st->time_base, AV_TIME_BASE_Q));
    4321             :             }
    4322          41 :             if (new_start_time > is->start_time) {
    4323           3 :                 av_log(is, AV_LOG_VERBOSE, "Correcting start time by %"PRId64"\n", new_start_time - is->start_time);
    4324           3 :                 ifile->ts_offset = -new_start_time;
    4325             :             }
    4326             :         }
    4327             : 
    4328         227 :         stime = av_rescale_q(is->start_time, AV_TIME_BASE_Q, ist->st->time_base);
    4329         227 :         stime2= stime + (1ULL<<ist->st->pts_wrap_bits);
    4330         227 :         ist->wrap_correction_done = 1;
    4331             : 
    4332         227 :         if(stime2 > stime && pkt.dts != AV_NOPTS_VALUE && pkt.dts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
    4333           0 :             pkt.dts -= 1ULL<<ist->st->pts_wrap_bits;
    4334           0 :             ist->wrap_correction_done = 0;
    4335             :         }
    4336         227 :         if(stime2 > stime && pkt.pts != AV_NOPTS_VALUE && pkt.pts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
    4337           0 :             pkt.pts -= 1ULL<<ist->st->pts_wrap_bits;
    4338           0 :             ist->wrap_correction_done = 0;
    4339             :         }
    4340             :     }
    4341             : 
    4342             :     /* add the stream-global side data to the first packet */
    4343      385737 :     if (ist->nb_packets == 1) {
    4344        5701 :         for (i = 0; i < ist->st->nb_side_data; i++) {
    4345         213 :             AVPacketSideData *src_sd = &ist->st->side_data[i];
    4346             :             uint8_t *dst_data;
    4347             : 
    4348         213 :             if (src_sd->type == AV_PKT_DATA_DISPLAYMATRIX)
    4349           1 :                 continue;
    4350             : 
    4351         212 :             if (av_packet_get_side_data(&pkt, src_sd->type, NULL))
    4352           0 :                 continue;
    4353             : 
    4354         212 :             dst_data = av_packet_new_side_data(&pkt, src_sd->type, src_sd->size);
    4355         212 :             if (!dst_data)
    4356           0 :                 exit_program(1);
    4357             : 
    4358         212 :             memcpy(dst_data, src_sd->data, src_sd->size);
    4359             :         }
    4360             :     }
    4361             : 
    4362      385737 :     if (pkt.dts != AV_NOPTS_VALUE)
    4363      350068 :         pkt.dts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
    4364      385737 :     if (pkt.pts != AV_NOPTS_VALUE)
    4365      347977 :         pkt.pts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
    4366             : 
    4367      385737 :     if (pkt.pts != AV_NOPTS_VALUE)
    4368      347977 :         pkt.pts *= ist->ts_scale;
    4369      385737 :     if (pkt.dts != AV_NOPTS_VALUE)
    4370      350068 :         pkt.dts *= ist->ts_scale;
    4371             : 
    4372      385737 :     pkt_dts = av_rescale_q_rnd(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q, AV_ROUND_NEAR_INF|AV_ROUND_PASS_MINMAX);
    4373      662344 :     if ((ist->dec_ctx->codec_type == AVMEDIA_TYPE_VIDEO ||
    4374      660880 :          ist->dec_ctx->codec_type == AVMEDIA_TYPE_AUDIO) &&
    4375      348606 :         pkt_dts != AV_NOPTS_VALUE && ist->next_dts == AV_NOPTS_VALUE && !copy_ts
    4376        5424 :         && (is->iformat->flags & AVFMT_TS_DISCONT) && ifile->last_ts != AV_NOPTS_VALUE) {
    4377          78 :         int64_t delta   = pkt_dts - ifile->last_ts;
    4378         156 :         if (delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
    4379          78 :             delta >  1LL*dts_delta_threshold*AV_TIME_BASE){
    4380           0 :             ifile->ts_offset -= delta;
    4381           0 :             av_log(NULL, AV_LOG_DEBUG,
    4382             :                    "Inter stream timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
    4383             :                    delta, ifile->ts_offset);
    4384           0 :             pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
    4385           0 :             if (pkt.pts != AV_NOPTS_VALUE)
    4386           0 :                 pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
    4387             :         }
    4388             :     }
    4389             : 
    4390      385737 :     duration = av_rescale_q(ifile->duration, ifile->time_base, ist->st->time_base);
    4391      385737 :     if (pkt.pts != AV_NOPTS_VALUE) {
    4392      347977 :         pkt.pts += duration;
    4393      347977 :         ist->max_pts = FFMAX(pkt.pts, ist->max_pts);
    4394      347977 :         ist->min_pts = FFMIN(pkt.pts, ist->min_pts);
    4395             :     }
    4396             : 
    4397      385737 :     if (pkt.dts != AV_NOPTS_VALUE)
    4398      350068 :         pkt.dts += duration;
    4399             : 
    4400      385737 :     pkt_dts = av_rescale_q_rnd(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q, AV_ROUND_NEAR_INF|AV_ROUND_PASS_MINMAX);
    4401      662344 :     if ((ist->dec_ctx->codec_type == AVMEDIA_TYPE_VIDEO ||
    4402      660880 :          ist->dec_ctx->codec_type == AVMEDIA_TYPE_AUDIO) &&
    4403      691787 :          pkt_dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE &&
    4404      343181 :         !copy_ts) {
    4405      343108 :         int64_t delta   = pkt_dts - ist->next_dts;
    4406      343108 :         if (is->iformat->flags & AVFMT_TS_DISCONT) {
    4407       27284 :             if (delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
    4408       27284 :                 delta >  1LL*dts_delta_threshold*AV_TIME_BASE ||
    4409       13642 :                 pkt_dts + AV_TIME_BASE/10 < FFMAX(ist->pts, ist->dts)) {
    4410           8 :                 ifile->ts_offset -= delta;
    4411           8 :                 av_log(NULL, AV_LOG_DEBUG,
    4412             :                        "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
    4413             :                        delta, ifile->ts_offset);
    4414           8 :                 pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
    4415           8 :                 if (pkt.pts != AV_NOPTS_VALUE)
    4416           8 :                     pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
    4417             :             }
    4418             :         } else {
    4419      658932 :             if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
    4420      329466 :                  delta >  1LL*dts_error_threshold*AV_TIME_BASE) {
    4421           0 :                 av_log(NULL, AV_LOG_WARNING, "DTS %"PRId64", next:%"PRId64" st:%d invalid dropping\n", pkt.dts, ist->next_dts, pkt.stream_index);
    4422           0 :                 pkt.dts = AV_NOPTS_VALUE;
    4423             :             }
    4424      329466 :             if (pkt.pts != AV_NOPTS_VALUE){
    4425      327437 :                 int64_t pkt_pts = av_rescale_q(pkt.pts, ist->st->time_base, AV_TIME_BASE_Q);
    4426      327437 :                 delta   = pkt_pts - ist->next_dts;
    4427      654874 :                 if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
    4428      327437 :                      delta >  1LL*dts_error_threshold*AV_TIME_BASE) {
    4429           0 :                     av_log(NULL, AV_LOG_WARNING, "PTS %"PRId64", next:%"PRId64" invalid dropping st:%d\n", pkt.pts, ist->next_dts, pkt.stream_index);
    4430           0 :                     pkt.pts = AV_NOPTS_VALUE;
    4431             :                 }
    4432             :             }
    4433             :         }
    4434             :     }
    4435             : 
    4436      385737 :     if (pkt.dts != AV_NOPTS_VALUE)
    4437      350068 :         ifile->last_ts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
    4438             : 
    4439      385737 :     if (debug_ts) {
    4440           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",
    4441           0 :                ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->dec_ctx->codec_type),
    4442           0 :                av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
    4443           0 :                av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
    4444           0 :                av_ts2str(input_files[ist->file_index]->ts_offset),
    4445           0 :                av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
    4446             :     }
    4447             : 
    4448      385737 :     sub2video_heartbeat(ist, pkt.pts);
    4449             : 
    4450      385737 :     process_input_packet(ist, &pkt, 0);
    4451             : 
    4452      393081 : discard_packet:
    4453      393081 :     av_packet_unref(&pkt);
    4454             : 
    4455      393081 :     return 0;
    4456             : }
    4457             : 
    4458             : /**
    4459             :  * Perform a step of transcoding for the specified filter graph.
    4460             :  *
    4461             :  * @param[in]  graph     filter graph to consider
    4462             :  * @param[out] best_ist  input stream where a frame would allow to continue
    4463             :  * @return  0 for success, <0 for error
    4464             :  */
    4465      365268 : static int transcode_from_filter(FilterGraph *graph, InputStream **best_ist)
    4466             : {
    4467             :     int i, ret;
    4468      365268 :     int nb_requests, nb_requests_max = 0;
    4469             :     InputFilter *ifilter;
    4470             :     InputStream *ist;
    4471             : 
    4472      365268 :     *best_ist = NULL;
    4473      365268 :     ret = avfilter_graph_request_oldest(graph->graph);
    4474      365268 :     if (ret >= 0)
    4475        1092 :         return reap_filters(0);
    4476             : 
    4477      364176 :     if (ret == AVERROR_EOF) {
    4478        3257 :         ret = reap_filters(1);
    4479        6516 :         for (i = 0; i < graph->nb_outputs; i++)
    4480        3259 :             close_output_stream(graph->outputs[i]->ost);
    4481        3257 :         return ret;
    4482             :     }
    4483      360919 :     if (ret != AVERROR(EAGAIN))
    4484           0 :         return ret;
    4485             : 
    4486      726573 :     for (i = 0; i < graph->nb_inputs; i++) {
    4487      365654 :         ifilter = graph->inputs[i];
    4488      365654 :         ist = ifilter->ist;
    4489      731308 :         if (input_files[ist->file_index]->eagain ||
    4490      365654 :             input_files[ist->file_index]->eof_reached)
    4491        1114 :             continue;
    4492      364540 :         nb_requests = av_buffersrc_get_nb_failed_requests(ifilter->filter);
    4493      364540 :         if (nb_requests > nb_requests_max) {
    4494      360919 :             nb_requests_max = nb_requests;
    4495      360919 :             *best_ist = ist;
    4496             :         }
    4497             :     }
    4498             : 
    4499      360919 :     if (!*best_ist)
    4500           0 :         for (i = 0; i < graph->nb_outputs; i++)
    4501           0 :             graph->outputs[i]->ost->unavailable = 1;
    4502             : 
    4503      360919 :     return 0;
    4504             : }
    4505             : 
    4506             : /**
    4507             :  * Run a single step of transcoding.
    4508             :  *
    4509             :  * @return  0 for success, <0 for error
    4510             :  */
    4511     1296975 : static int transcode_step(void)
    4512             : {
    4513             :     OutputStream *ost;
    4514     1296975 :     InputStream  *ist = NULL;
    4515             :     int ret;
    4516             : 
    4517     1296975 :     ost = choose_output();
    4518     1296975 :     if (!ost) {
    4519           7 :         if (got_eagain()) {
    4520           7 :             reset_eagain();
    4521           7 :             av_usleep(10000);
    4522           7 :             return 0;
    4523             :         }
    4524           0 :         av_log(NULL, AV_LOG_VERBOSE, "No more inputs to read from, finishing.\n");
    4525           0 :         return AVERROR_EOF;
    4526             :     }
    4527             : 
    4528     1296968 :     if (ost->filter && !ost->filter->graph->graph) {
    4529      904088 :         if (ifilter_has_all_input_formats(ost->filter->graph)) {
    4530          22 :             ret = configure_filtergraph(ost->filter->graph);
    4531          22 :             if (ret < 0) {
    4532           0 :                 av_log(NULL, AV_LOG_ERROR, "Error reinitializing filters!\n");
    4533           0 :                 return ret;
    4534             :             }
    4535             :         }
    4536             :     }
    4537             : 
    4538     1296968 :     if (ost->filter && ost->filter->graph->graph) {
    4539      365268 :         if (!ost->initialized) {
    4540          22 :             char error[1024] = {0};
    4541          22 :             ret = init_output_stream(ost, error, sizeof(error));
    4542          22 :             if (ret < 0) {
    4543           0 :                 av_log(NULL, AV_LOG_ERROR, "Error initializing output stream %d:%d -- %s\n",
    4544             :                        ost->file_index, ost->index, error);
    4545           0 :                 exit_program(1);
    4546             :             }
    4547             :         }
    4548      365268 :         if ((ret = transcode_from_filter(ost->filter->graph, &ist)) < 0)
    4549           0 :             return ret;
    4550      726187 :         if (!ist)
    4551        4349 :             return 0;
    4552      931700 :     } else if (ost->filter) {
    4553             :         int i;
    4554      922470 :         for (i = 0; i < ost->filter->graph->nb_inputs; i++) {
    4555      922470 :             InputFilter *ifilter = ost->filter->graph->inputs[i];
    4556      922470 :             if (!ifilter->ist->got_output && !input_files[ifilter->ist->file_index]->eof_reached) {
    4557      904066 :                 ist = ifilter->ist;
    4558      904066 :                 break;
    4559             :             }
    4560             :         }
    4561      904066 :         if (!ist) {
    4562           0 :             ost->inputs_done = 1;
    4563           0 :             return 0;
    4564             :         }
    4565             :     } else {
    4566       27634 :         av_assert0(ost->source_index >= 0);
    4567       27634 :         ist = input_streams[ost->source_index];
    4568             :     }
    4569             : 
    4570     1292619 :     ret = process_input(ist->file_index);
    4571     1292619 :     if (ret == AVERROR(EAGAIN)) {
    4572      898947 :         if (input_files[ist->file_index]->eagain)
    4573      896034 :             ost->unavailable = 1;
    4574      898947 :         return 0;
    4575             :     }
    4576             : 
    4577      393672 :     if (ret < 0)
    4578           0 :         return ret == AVERROR_EOF ? 0 : ret;
    4579             : 
    4580      393672 :     return reap_filters(0);
    4581             : }
    4582             : 
    4583             : /*
    4584             :  * The following code is the main loop of the file converter
    4585             :  */
    4586        5376 : static int transcode(void)
    4587             : {
    4588             :     int ret, i;
    4589             :     AVFormatContext *os;
    4590             :     OutputStream *ost;
    4591             :     InputStream *ist;
    4592             :     int64_t timer_start;
    4593        5376 :     int64_t total_packets_written = 0;
    4594             : 
    4595        5376 :     ret = transcode_init();
    4596        5376 :     if (ret < 0)
    4597           0 :         goto fail;
    4598             : 
    4599        5376 :     if (stdin_interaction) {
    4600          15 :         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
    4601             :     }
    4602             : 
    4603        5376 :     timer_start = av_gettime_relative();
    4604             : 
    4605             : #if HAVE_PTHREADS
    4606        5376 :     if ((ret = init_input_threads()) < 0)
    4607           0 :         goto fail;
    4608             : #endif
    4609             : 
    4610     1307727 :     while (!received_sigterm) {
    4611     1302351 :         int64_t cur_time= av_gettime_relative();
    4612             : 
    4613             :         /* if 'q' pressed, exits */
    4614     1302351 :         if (stdin_interaction)
    4615        3297 :             if (check_keyboard_interaction(cur_time) < 0)
    4616           0 :                 break;
    4617             : 
    4618             :         /* check if there's any stream where output is still needed */
    4619     1302351 :         if (!need_output()) {
    4620        5376 :             av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n");
    4621        5376 :             break;
    4622             :         }
    4623             : 
    4624     1296975 :         ret = transcode_step();
    4625     1296975 :         if (ret < 0 && ret != AVERROR_EOF) {
    4626             :             char errbuf[128];
    4627           0 :             av_strerror(ret, errbuf, sizeof(errbuf));
    4628             : 
    4629           0 :             av_log(NULL, AV_LOG_ERROR, "Error while filtering: %s\n", errbuf);
    4630           0 :             break;
    4631             :         }
    4632             : 
    4633             :         /* dump report by using the output first video and audio streams */
    4634     1296975 :         print_report(0, timer_start, cur_time);
    4635             :     }
    4636             : #if HAVE_PTHREADS
    4637        5376 :     free_input_threads();
    4638             : #endif
    4639             : 
    4640             :     /* at the end of stream, we must flush the decoder buffers */
    4641       11105 :     for (i = 0; i < nb_input_streams; i++) {
    4642        5729 :         ist = input_streams[i];
    4643        5729 :         if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
    4644        2493 :             process_input_packet(ist, NULL, 0);
    4645             :         }
    4646             :     }
    4647        5376 :     flush_encoders();
    4648             : 
    4649        5376 :     term_exit();
    4650             : 
    4651             :     /* write the trailer if needed and close file */
    4652       10753 :     for (i = 0; i < nb_output_files; i++) {
    4653        5377 :         os = output_files[i]->ctx;
    4654        5377 :         if (!output_files[i]->header_written) {
    4655           0 :             av_log(NULL, AV_LOG_ERROR,
    4656             :                    "Nothing was written into output file %d (%s), because "
    4657             :                    "at least one of its streams received no packets.\n",
    4658           0 :                    i, os->filename);
    4659           0 :             continue;
    4660             :         }
    4661        5377 :         if ((ret = av_write_trailer(os)) < 0) {
    4662           0 :             av_log(NULL, AV_LOG_ERROR, "Error writing trailer of %s: %s\n", os->filename, av_err2str(ret));
    4663           0 :             if (exit_on_error)
    4664           0 :                 exit_program(1);
    4665             :         }
    4666             :     }
    4667             : 
    4668             :     /* dump report by using the first video and audio streams */
    4669        5376 :     print_report(1, timer_start, av_gettime_relative());
    4670             : 
    4671             :     /* close each encoder */
    4672       10890 :     for (i = 0; i < nb_output_streams; i++) {
    4673        5514 :         ost = output_streams[i];
    4674        5514 :         if (ost->encoding_needed) {
    4675        5293 :             av_freep(&ost->enc_ctx->stats_in);
    4676             :         }
    4677        5514 :         total_packets_written += ost->packets_written;
    4678             :     }
    4679             : 
    4680        5376 :     if (!total_packets_written && (abort_on_flags & ABORT_ON_FLAG_EMPTY_OUTPUT)) {
    4681           0 :         av_log(NULL, AV_LOG_FATAL, "Empty output\n");
    4682           0 :         exit_program(1);
    4683             :     }
    4684             : 
    4685             :     /* close each decoder */
    4686       11105 :     for (i = 0; i < nb_input_streams; i++) {
    4687        5729 :         ist = input_streams[i];
    4688        5729 :         if (ist->decoding_needed) {
    4689        5288 :             avcodec_close(ist->dec_ctx);
    4690        5288 :             if (ist->hwaccel_uninit)
    4691           0 :                 ist->hwaccel_uninit(ist->dec_ctx);
    4692             :         }
    4693             :     }
    4694             : 
    4695        5376 :     av_buffer_unref(&hw_device_ctx);
    4696        5376 :     hw_device_free_all();
    4697             : 
    4698             :     /* finished ! */
    4699        5376 :     ret = 0;
    4700             : 
    4701        5376 :  fail:
    4702             : #if HAVE_PTHREADS
    4703        5376 :     free_input_threads();
    4704             : #endif
    4705             : 
    4706        5376 :     if (output_streams) {
    4707       10889 :         for (i = 0; i < nb_output_streams; i++) {
    4708        5514 :             ost = output_streams[i];
    4709        5514 :             if (ost) {
    4710        5514 :                 if (ost->logfile) {
    4711           0 :                     if (fclose(ost->logfile))
    4712           0 :                         av_log(NULL, AV_LOG_ERROR,
    4713             :                                "Error closing logfile, loss of information possible: %s\n",
    4714           0 :                                av_err2str(AVERROR(errno)));
    4715           0 :                     ost->logfile = NULL;
    4716             :                 }
    4717        5514 :                 av_freep(&ost->forced_kf_pts);
    4718        5514 :                 av_freep(&ost->apad);
    4719        5514 :                 av_freep(&ost->disposition);
    4720        5514 :                 av_dict_free(&ost->encoder_opts);
    4721        5514 :                 av_dict_free(&ost->sws_dict);
    4722        5514 :                 av_dict_free(&ost->swr_opts);
    4723        5514 :                 av_dict_free(&ost->resample_opts);
    4724             :             }
    4725             :         }
    4726             :     }
    4727        5376 :     return ret;
    4728             : }
    4729             : 
    4730             : 
    4731       10752 : static int64_t getutime(void)
    4732             : {
    4733             : #if HAVE_GETRUSAGE
    4734             :     struct rusage rusage;
    4735             : 
    4736       10752 :     getrusage(RUSAGE_SELF, &rusage);
    4737       10752 :     return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
    4738             : #elif HAVE_GETPROCESSTIMES
    4739             :     HANDLE proc;
    4740             :     FILETIME c, e, k, u;
    4741             :     proc = GetCurrentProcess();
    4742             :     GetProcessTimes(proc, &c, &e, &k, &u);
    4743             :     return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
    4744             : #else
    4745             :     return av_gettime_relative();
    4746             : #endif
    4747             : }
    4748             : 
    4749           0 : static int64_t getmaxrss(void)
    4750             : {
    4751             : #if HAVE_GETRUSAGE && HAVE_STRUCT_RUSAGE_RU_MAXRSS
    4752             :     struct rusage rusage;
    4753           0 :     getrusage(RUSAGE_SELF, &rusage);
    4754           0 :     return (int64_t)rusage.ru_maxrss * 1024;
    4755             : #elif HAVE_GETPROCESSMEMORYINFO
    4756             :     HANDLE proc;
    4757             :     PROCESS_MEMORY_COUNTERS memcounters;
    4758             :     proc = GetCurrentProcess();
    4759             :     memcounters.cb = sizeof(memcounters);
    4760             :     GetProcessMemoryInfo(proc, &memcounters, sizeof(memcounters));
    4761             :     return memcounters.PeakPagefileUsage;
    4762             : #else
    4763             :     return 0;
    4764             : #endif
    4765             : }
    4766             : 
    4767           0 : static void log_callback_null(void *ptr, int level, const char *fmt, va_list vl)
    4768             : {
    4769           0 : }
    4770             : 
    4771        5377 : int main(int argc, char **argv)
    4772             : {
    4773             :     int i, ret;
    4774             :     int64_t ti;
    4775             : 
    4776        5377 :     init_dynload();
    4777             : 
    4778        5377 :     register_exit(ffmpeg_cleanup);
    4779             : 
    4780        5377 :     setvbuf(stderr,NULL,_IONBF,0); /* win32 runtime needs this */
    4781             : 
    4782        5377 :     av_log_set_flags(AV_LOG_SKIP_REPEATED);
    4783        5377 :     parse_loglevel(argc, argv, options);
    4784             : 
    4785        5377 :     if(argc>1 && !strcmp(argv[1], "-d")){
    4786           0 :         run_as_daemon=1;
    4787           0 :         av_log_set_callback(log_callback_null);
    4788           0 :         argc--;
    4789           0 :         argv++;
    4790             :     }
    4791             : 
    4792        5377 :     avcodec_register_all();
    4793             : #if CONFIG_AVDEVICE
    4794        5377 :     avdevice_register_all();
    4795             : #endif
    4796        5377 :     avfilter_register_all();
    4797        5377 :     av_register_all();
    4798        5377 :     avformat_network_init();
    4799             : 
    4800        5377 :     show_banner(argc, argv, options);
    4801             : 
    4802             :     /* parse options and open all input/output files */
    4803        5377 :     ret = ffmpeg_parse_options(argc, argv);
    4804        5376 :     if (ret < 0)
    4805           0 :         exit_program(1);
    4806             : 
    4807        5376 :     if (nb_output_files <= 0 && nb_input_files == 0) {
    4808           0 :         show_usage();
    4809           0 :         av_log(NULL, AV_LOG_WARNING, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
    4810           0 :         exit_program(1);
    4811             :     }
    4812             : 
    4813             :     /* file converter / grab */
    4814        5376 :     if (nb_output_files <= 0) {
    4815           0 :         av_log(NULL, AV_LOG_FATAL, "At least one output file must be specified\n");
    4816           0 :         exit_program(1);
    4817             :     }
    4818             : 
    4819             : //     if (nb_input_files == 0) {
    4820             : //         av_log(NULL, AV_LOG_FATAL, "At least one input file must be specified\n");
    4821             : //         exit_program(1);
    4822             : //     }
    4823             : 
    4824       10753 :     for (i = 0; i < nb_output_files; i++) {
    4825        5377 :         if (strcmp(output_files[i]->ctx->oformat->name, "rtp"))
    4826        5377 :             want_sdp = 0;
    4827             :     }
    4828             : 
    4829        5376 :     current_time = ti = getutime();
    4830        5376 :     if (transcode() < 0)
    4831           0 :         exit_program(1);
    4832        5376 :     ti = getutime() - ti;
    4833        5376 :     if (do_benchmark) {
    4834           0 :         av_log(NULL, AV_LOG_INFO, "bench: utime=%0.3fs\n", ti / 1000000.0);
    4835             :     }
    4836        5376 :     av_log(NULL, AV_LOG_DEBUG, "%"PRIu64" frames successfully decoded, %"PRIu64" decoding errors\n",
    4837             :            decode_error_stat[0], decode_error_stat[1]);
    4838        5376 :     if ((decode_error_stat[0] + decode_error_stat[1]) * max_error_rate < decode_error_stat[1])
    4839           0 :         exit_program(69);
    4840             : 
    4841        5376 :     exit_program(received_nb_signals ? 255 : main_return_code);
    4842             :     return main_return_code;
    4843             : }

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