LCOV - code coverage report
Current view: top level - src - ffmpeg.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 1887 2672 70.6 %
Date: 2017-05-29 12:59:06 Functions: 71 84 84.5 %

          Line data    Source code
       1             : /*
       2             :  * Copyright (c) 2000-2003 Fabrice Bellard
       3             :  *
       4             :  * This file is part of FFmpeg.
       5             :  *
       6             :  * FFmpeg is free software; you can redistribute it and/or
       7             :  * modify it under the terms of the GNU Lesser General Public
       8             :  * License as published by the Free Software Foundation; either
       9             :  * version 2.1 of the License, or (at your option) any later version.
      10             :  *
      11             :  * FFmpeg is distributed in the hope that it will be useful,
      12             :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
      13             :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      14             :  * Lesser General Public License for more details.
      15             :  *
      16             :  * You should have received a copy of the GNU Lesser General Public
      17             :  * License along with FFmpeg; if not, write to the Free Software
      18             :  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
      19             :  */
      20             : 
      21             : /**
      22             :  * @file
      23             :  * multimedia converter based on the FFmpeg libraries
      24             :  */
      25             : 
      26             : #include "config.h"
      27             : #include <ctype.h>
      28             : #include <string.h>
      29             : #include <math.h>
      30             : #include <stdlib.h>
      31             : #include <errno.h>
      32             : #include <limits.h>
      33             : #include <stdatomic.h>
      34             : #include <stdint.h>
      35             : 
      36             : #if HAVE_IO_H
      37             : #include <io.h>
      38             : #endif
      39             : #if HAVE_UNISTD_H
      40             : #include <unistd.h>
      41             : #endif
      42             : 
      43             : #include "libavformat/avformat.h"
      44             : #include "libavdevice/avdevice.h"
      45             : #include "libswresample/swresample.h"
      46             : #include "libavutil/opt.h"
      47             : #include "libavutil/channel_layout.h"
      48             : #include "libavutil/parseutils.h"
      49             : #include "libavutil/samplefmt.h"
      50             : #include "libavutil/fifo.h"
      51             : #include "libavutil/hwcontext.h"
      52             : #include "libavutil/internal.h"
      53             : #include "libavutil/intreadwrite.h"
      54             : #include "libavutil/dict.h"
      55             : #include "libavutil/display.h"
      56             : #include "libavutil/mathematics.h"
      57             : #include "libavutil/pixdesc.h"
      58             : #include "libavutil/avstring.h"
      59             : #include "libavutil/libm.h"
      60             : #include "libavutil/imgutils.h"
      61             : #include "libavutil/timestamp.h"
      62             : #include "libavutil/bprint.h"
      63             : #include "libavutil/time.h"
      64             : #include "libavutil/threadmessage.h"
      65             : #include "libavcodec/mathops.h"
      66             : #include "libavformat/os_support.h"
      67             : 
      68             : # include "libavfilter/avfilter.h"
      69             : # include "libavfilter/buffersrc.h"
      70             : # include "libavfilter/buffersink.h"
      71             : 
      72             : #if HAVE_SYS_RESOURCE_H
      73             : #include <sys/time.h>
      74             : #include <sys/types.h>
      75             : #include <sys/resource.h>
      76             : #elif HAVE_GETPROCESSTIMES
      77             : #include <windows.h>
      78             : #endif
      79             : #if HAVE_GETPROCESSMEMORYINFO
      80             : #include <windows.h>
      81             : #include <psapi.h>
      82             : #endif
      83             : #if HAVE_SETCONSOLECTRLHANDLER
      84             : #include <windows.h>
      85             : #endif
      86             : 
      87             : 
      88             : #if HAVE_SYS_SELECT_H
      89             : #include <sys/select.h>
      90             : #endif
      91             : 
      92             : #if HAVE_TERMIOS_H
      93             : #include <fcntl.h>
      94             : #include <sys/ioctl.h>
      95             : #include <sys/time.h>
      96             : #include <termios.h>
      97             : #elif HAVE_KBHIT
      98             : #include <conio.h>
      99             : #endif
     100             : 
     101             : #if HAVE_PTHREADS
     102             : #include <pthread.h>
     103             : #endif
     104             : 
     105             : #include <time.h>
     106             : 
     107             : #include "ffmpeg.h"
     108             : #include "cmdutils.h"
     109             : 
     110             : #include "libavutil/avassert.h"
     111             : 
     112             : const char program_name[] = "ffmpeg";
     113             : const int program_birth_year = 2000;
     114             : 
     115             : static FILE *vstats_file;
     116             : 
     117             : const char *const forced_keyframes_const_names[] = {
     118             :     "n",
     119             :     "n_forced",
     120             :     "prev_forced_n",
     121             :     "prev_forced_t",
     122             :     "t",
     123             :     NULL
     124             : };
     125             : 
     126             : static void do_video_stats(OutputStream *ost, int frame_size);
     127             : static int64_t getutime(void);
     128             : static int64_t getmaxrss(void);
     129             : static int ifilter_has_all_input_formats(FilterGraph *fg);
     130             : 
     131             : static int run_as_daemon  = 0;
     132             : static int nb_frames_dup = 0;
     133             : static unsigned dup_warning = 1000;
     134             : static int nb_frames_drop = 0;
     135             : static int64_t decode_error_stat[2];
     136             : 
     137             : static int want_sdp = 1;
     138             : 
     139             : static int current_time;
     140             : AVIOContext *progress_avio = NULL;
     141             : 
     142             : static uint8_t *subtitle_out;
     143             : 
     144             : InputStream **input_streams = NULL;
     145             : int        nb_input_streams = 0;
     146             : InputFile   **input_files   = NULL;
     147             : int        nb_input_files   = 0;
     148             : 
     149             : OutputStream **output_streams = NULL;
     150             : int         nb_output_streams = 0;
     151             : OutputFile   **output_files   = NULL;
     152             : int         nb_output_files   = 0;
     153             : 
     154             : FilterGraph **filtergraphs;
     155             : int        nb_filtergraphs;
     156             : 
     157             : #if HAVE_TERMIOS_H
     158             : 
     159             : /* init terminal so that we can grab keys */
     160             : static struct termios oldtty;
     161             : static int restore_tty;
     162             : #endif
     163             : 
     164             : #if HAVE_PTHREADS
     165             : static void free_input_threads(void);
     166             : #endif
     167             : 
     168             : /* sub2video hack:
     169             :    Convert subtitles to video with alpha to insert them in filter graphs.
     170             :    This is a temporary solution until libavfilter gets real subtitles support.
     171             :  */
     172             : 
     173          90 : static int sub2video_get_blank_frame(InputStream *ist)
     174             : {
     175             :     int ret;
     176          90 :     AVFrame *frame = ist->sub2video.frame;
     177             : 
     178          90 :     av_frame_unref(frame);
     179          90 :     ist->sub2video.frame->width  = ist->dec_ctx->width  ? ist->dec_ctx->width  : ist->sub2video.w;
     180          90 :     ist->sub2video.frame->height = ist->dec_ctx->height ? ist->dec_ctx->height : ist->sub2video.h;
     181          90 :     ist->sub2video.frame->format = AV_PIX_FMT_RGB32;
     182          90 :     if ((ret = av_frame_get_buffer(frame, 32)) < 0)
     183           0 :         return ret;
     184          90 :     memset(frame->data[0], 0, frame->height * frame->linesize[0]);
     185          90 :     return 0;
     186             : }
     187             : 
     188          44 : static void sub2video_copy_rect(uint8_t *dst, int dst_linesize, int w, int h,
     189             :                                 AVSubtitleRect *r)
     190             : {
     191             :     uint32_t *pal, *dst2;
     192             :     uint8_t *src, *src2;
     193             :     int x, y;
     194             : 
     195          44 :     if (r->type != SUBTITLE_BITMAP) {
     196           0 :         av_log(NULL, AV_LOG_WARNING, "sub2video: non-bitmap subtitle\n");
     197           0 :         return;
     198             :     }
     199          44 :     if (r->x < 0 || r->x + r->w > w || r->y < 0 || r->y + r->h > h) {
     200           0 :         av_log(NULL, AV_LOG_WARNING, "sub2video: rectangle (%d %d %d %d) overflowing %d %d\n",
     201             :             r->x, r->y, r->w, r->h, w, h
     202             :         );
     203           0 :         return;
     204             :     }
     205             : 
     206          44 :     dst += r->y * dst_linesize + r->x * 4;
     207          44 :     src = r->data[0];
     208          44 :     pal = (uint32_t *)r->data[1];
     209        1642 :     for (y = 0; y < r->h; y++) {
     210        1598 :         dst2 = (uint32_t *)dst;
     211        1598 :         src2 = src;
     212      480325 :         for (x = 0; x < r->w; x++)
     213      478727 :             *(dst2++) = pal[*(src2++)];
     214        1598 :         dst += dst_linesize;
     215        1598 :         src += r->linesize[0];
     216             :     }
     217             : }
     218             : 
     219         311 : static void sub2video_push_ref(InputStream *ist, int64_t pts)
     220             : {
     221         311 :     AVFrame *frame = ist->sub2video.frame;
     222             :     int i;
     223             : 
     224             :     av_assert1(frame->data[0]);
     225         311 :     ist->sub2video.last_pts = frame->pts = pts;
     226         622 :     for (i = 0; i < ist->nb_filters; i++)
     227         311 :         av_buffersrc_add_frame_flags(ist->filters[i]->filter, frame,
     228             :                                      AV_BUFFERSRC_FLAG_KEEP_REF |
     229             :                                      AV_BUFFERSRC_FLAG_PUSH);
     230         311 : }
     231             : 
     232         117 : void sub2video_update(InputStream *ist, AVSubtitle *sub)
     233             : {
     234         117 :     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         117 :     if (!frame)
     241          27 :         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      376407 : static void sub2video_heartbeat(InputStream *ist, int64_t pts)
     267             : {
     268      376407 :     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      790373 :     for (i = 0; i < infile->nb_streams; i++) {
     277      413966 :         InputStream *ist2 = input_streams[infile->ist_index + i];
     278      413966 :         if (!ist2->sub2video.frame)
     279      413077 :             continue;
     280             :         /* subtitles seem to be usually muxed ahead of other streams;
     281             :            if not, subtracting a larger time here is necessary */
     282         889 :         pts2 = av_rescale_q(pts, ist->st->time_base, ist2->st->time_base) - 1;
     283             :         /* do not send the heartbeat frame if the subtitle is already ahead */
     284         889 :         if (pts2 <= ist2->sub2video.last_pts)
     285           0 :             continue;
     286         889 :         if (pts2 >= ist2->sub2video.end_pts || !ist2->sub2video.frame->data[0])
     287          44 :             sub2video_update(ist2, NULL);
     288        1778 :         for (j = 0, nb_reqs = 0; j < ist2->nb_filters; j++)
     289         889 :             nb_reqs += av_buffersrc_get_nb_failed_requests(ist2->filters[j]->filter);
     290         889 :         if (nb_reqs)
     291         221 :             sub2video_push_ref(ist2, pts2);
     292             :     }
     293      376407 : }
     294             : 
     295          29 : static void sub2video_flush(InputStream *ist)
     296             : {
     297             :     int i;
     298             : 
     299          29 :     if (ist->sub2video.end_pts < INT64_MAX)
     300          29 :         sub2video_update(ist, NULL);
     301          31 :     for (i = 0; i < ist->nb_filters; i++)
     302           2 :         av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
     303          29 : }
     304             : 
     305             : /* end of sub2video hack */
     306             : 
     307       10335 : static void term_exit_sigsafe(void)
     308             : {
     309             : #if HAVE_TERMIOS_H
     310       10335 :     if(restore_tty)
     311           2 :         tcsetattr (0, TCSANOW, &oldtty);
     312             : #endif
     313       10335 : }
     314             : 
     315       10335 : void term_exit(void)
     316             : {
     317       10335 :     av_log(NULL, AV_LOG_QUIET, "%s", "");
     318       10335 :     term_exit_sigsafe();
     319       10335 : }
     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        5167 : void term_init(void)
     374             : {
     375             : #if HAVE_TERMIOS_H
     376        5167 :     if (!run_as_daemon && stdin_interaction) {
     377             :         struct termios tty;
     378          10 :         if (tcgetattr (0, &tty) == 0) {
     379           1 :             oldtty = tty;
     380           1 :             restore_tty = 1;
     381             : 
     382           1 :             tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
     383             :                              |INLCR|IGNCR|ICRNL|IXON);
     384           1 :             tty.c_oflag |= OPOST;
     385           1 :             tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
     386           1 :             tty.c_cflag &= ~(CSIZE|PARENB);
     387           1 :             tty.c_cflag |= CS8;
     388           1 :             tty.c_cc[VMIN] = 1;
     389           1 :             tty.c_cc[VTIME] = 0;
     390             : 
     391           1 :             tcsetattr (0, TCSANOW, &tty);
     392             :         }
     393          10 :         signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
     394             :     }
     395             : #endif
     396             : 
     397        5167 :     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
     398        5167 :     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
     399             : #ifdef SIGXCPU
     400        5167 :     signal(SIGXCPU, sigterm_handler);
     401             : #endif
     402             : #if HAVE_SETCONSOLECTRLHANDLER
     403             :     SetConsoleCtrlHandler((PHANDLER_ROUTINE) CtrlHandler, TRUE);
     404             : #endif
     405        5167 : }
     406             : 
     407             : /* read a key without blocking */
     408          23 : static int read_key(void)
     409             : {
     410             :     unsigned char ch;
     411             : #if HAVE_TERMIOS_H
     412          23 :     int n = 1;
     413             :     struct timeval tv;
     414             :     fd_set rfds;
     415             : 
     416          23 :     FD_ZERO(&rfds);
     417          23 :     FD_SET(0, &rfds);
     418          23 :     tv.tv_sec = 0;
     419          23 :     tv.tv_usec = 0;
     420          23 :     n = select(1, &rfds, NULL, NULL, &tv);
     421          23 :     if (n > 0) {
     422          22 :         n = read(0, &ch, 1);
     423          22 :         if (n == 1)
     424           0 :             return ch;
     425             : 
     426          22 :         return n;
     427             :     }
     428             : #elif HAVE_KBHIT
     429             : #    if HAVE_PEEKNAMEDPIPE
     430             :     static int is_pipe;
     431             :     static HANDLE input_handle;
     432             :     DWORD dw, nchars;
     433             :     if(!input_handle){
     434             :         input_handle = GetStdHandle(STD_INPUT_HANDLE);
     435             :         is_pipe = !GetConsoleMode(input_handle, &dw);
     436             :     }
     437             : 
     438             :     if (is_pipe) {
     439             :         /* When running under a GUI, you will end here. */
     440             :         if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL)) {
     441             :             // input pipe may have been closed by the program that ran ffmpeg
     442             :             return -1;
     443             :         }
     444             :         //Read it
     445             :         if(nchars != 0) {
     446             :             read(0, &ch, 1);
     447             :             return ch;
     448             :         }else{
     449             :             return -1;
     450             :         }
     451             :     }
     452             : #    endif
     453             :     if(kbhit())
     454             :         return(getch());
     455             : #endif
     456           1 :     return -1;
     457             : }
     458             : 
     459      835883 : static int decode_interrupt_cb(void *ctx)
     460             : {
     461      835883 :     return received_nb_signals > atomic_load(&transcode_init_done);
     462             : }
     463             : 
     464             : const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
     465             : 
     466        5168 : static void ffmpeg_cleanup(int ret)
     467             : {
     468             :     int i, j;
     469             : 
     470        5168 :     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       10261 :     for (i = 0; i < nb_filtergraphs; i++) {
     476        5093 :         FilterGraph *fg = filtergraphs[i];
     477        5093 :         avfilter_graph_free(&fg->graph);
     478       10198 :         for (j = 0; j < fg->nb_inputs; j++) {
     479       10210 :             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        5105 :             av_fifo_freep(&fg->inputs[j]->frame_queue);
     486        5105 :             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        5105 :             av_buffer_unref(&fg->inputs[j]->hw_frames_ctx);
     496        5105 :             av_freep(&fg->inputs[j]->name);
     497        5105 :             av_freep(&fg->inputs[j]);
     498             :         }
     499        5093 :         av_freep(&fg->inputs);
     500       10188 :         for (j = 0; j < fg->nb_outputs; j++) {
     501        5095 :             av_freep(&fg->outputs[j]->name);
     502        5095 :             av_freep(&fg->outputs[j]->formats);
     503        5095 :             av_freep(&fg->outputs[j]->channel_layouts);
     504        5095 :             av_freep(&fg->outputs[j]->sample_rates);
     505        5095 :             av_freep(&fg->outputs[j]);
     506             :         }
     507        5093 :         av_freep(&fg->outputs);
     508        5093 :         av_freep(&fg->graph_desc);
     509             : 
     510        5093 :         av_freep(&filtergraphs[i]);
     511             :     }
     512        5168 :     av_freep(&filtergraphs);
     513             : 
     514        5168 :     av_freep(&subtitle_out);
     515             : 
     516             :     /* close files */
     517       10336 :     for (i = 0; i < nb_output_files; i++) {
     518        5168 :         OutputFile *of = output_files[i];
     519             :         AVFormatContext *s;
     520        5168 :         if (!of)
     521           0 :             continue;
     522        5168 :         s = of->ctx;
     523        5168 :         if (s && s->oformat && !(s->oformat->flags & AVFMT_NOFILE))
     524        5127 :             avio_closep(&s->pb);
     525        5168 :         avformat_free_context(s);
     526        5168 :         av_dict_free(&of->opts);
     527             : 
     528        5168 :         av_freep(&output_files[i]);
     529             :     }
     530       10468 :     for (i = 0; i < nb_output_streams; i++) {
     531        5300 :         OutputStream *ost = output_streams[i];
     532             : 
     533        5300 :         if (!ost)
     534           0 :             continue;
     535             : 
     536        5307 :         for (j = 0; j < ost->nb_bitstream_filters; j++)
     537           7 :             av_bsf_free(&ost->bsf_ctx[j]);
     538        5300 :         av_freep(&ost->bsf_ctx);
     539             : 
     540        5300 :         av_frame_free(&ost->filtered_frame);
     541        5300 :         av_frame_free(&ost->last_frame);
     542        5300 :         av_dict_free(&ost->encoder_opts);
     543             : 
     544        5300 :         av_parser_close(ost->parser);
     545        5300 :         avcodec_free_context(&ost->parser_avctx);
     546             : 
     547        5300 :         av_freep(&ost->forced_keyframes);
     548        5300 :         av_expr_free(ost->forced_keyframes_pexpr);
     549        5300 :         av_freep(&ost->avfilter);
     550        5300 :         av_freep(&ost->logfile_prefix);
     551             : 
     552        5300 :         av_freep(&ost->audio_channels_map);
     553        5300 :         ost->audio_channels_mapped = 0;
     554             : 
     555        5300 :         av_dict_free(&ost->sws_dict);
     556             : 
     557        5300 :         avcodec_free_context(&ost->enc_ctx);
     558        5300 :         avcodec_parameters_free(&ost->ref_par);
     559             : 
     560        5300 :         if (ost->muxing_queue) {
     561       10600 :             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        5300 :             av_fifo_freep(&ost->muxing_queue);
     567             :         }
     568             : 
     569        5300 :         av_freep(&output_streams[i]);
     570             :     }
     571             : #if HAVE_PTHREADS
     572        5168 :     free_input_threads();
     573             : #endif
     574       10394 :     for (i = 0; i < nb_input_files; i++) {
     575        5226 :         avformat_close_input(&input_files[i]->ctx);
     576        5226 :         av_freep(&input_files[i]);
     577             :     }
     578       10693 :     for (i = 0; i < nb_input_streams; i++) {
     579        5525 :         InputStream *ist = input_streams[i];
     580             : 
     581        5525 :         av_frame_free(&ist->decoded_frame);
     582        5525 :         av_frame_free(&ist->filter_frame);
     583        5525 :         av_dict_free(&ist->decoder_opts);
     584        5525 :         avsubtitle_free(&ist->prev_sub.subtitle);
     585        5525 :         av_frame_free(&ist->sub2video.frame);
     586        5525 :         av_freep(&ist->filters);
     587        5525 :         av_freep(&ist->hwaccel_device);
     588        5525 :         av_freep(&ist->dts_buffer);
     589             : 
     590        5525 :         avcodec_free_context(&ist->dec_ctx);
     591             : 
     592        5525 :         av_freep(&input_streams[i]);
     593             :     }
     594             : 
     595        5168 :     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        5168 :     av_freep(&vstats_filename);
     602             : 
     603        5168 :     av_freep(&input_streams);
     604        5168 :     av_freep(&input_files);
     605        5168 :     av_freep(&output_streams);
     606        5168 :     av_freep(&output_files);
     607             : 
     608        5168 :     uninit_opts();
     609             : 
     610        5168 :     avformat_network_deinit();
     611             : 
     612        5168 :     if (received_sigterm) {
     613           0 :         av_log(NULL, AV_LOG_INFO, "Exiting normally, received signal %d.\n",
     614             :                (int) received_sigterm);
     615        5168 :     } else if (ret && atomic_load(&transcode_init_done)) {
     616           0 :         av_log(NULL, AV_LOG_INFO, "Conversion failed!\n");
     617             :     }
     618        5168 :     term_exit();
     619        5168 :     ffmpeg_exited = 1;
     620        5168 : }
     621             : 
     622        5226 : void remove_avoptions(AVDictionary **a, AVDictionary *b)
     623             : {
     624        5226 :     AVDictionaryEntry *t = NULL;
     625             : 
     626       26920 :     while ((t = av_dict_get(b, "", t, AV_DICT_IGNORE_SUFFIX))) {
     627       16468 :         av_dict_set(a, t->key, NULL, AV_DICT_MATCH_CASE);
     628             :     }
     629        5226 : }
     630             : 
     631       15480 : void assert_avoptions(AVDictionary *m)
     632             : {
     633             :     AVDictionaryEntry *t;
     634       15480 :     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       15480 : }
     639             : 
     640           0 : static void abort_codec_experimental(AVCodec *c, int encoder)
     641             : {
     642           0 :     exit_program(1);
     643             : }
     644             : 
     645     2343292 : static void update_benchmark(const char *fmt, ...)
     646             : {
     647     2343292 :     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     2343292 : }
     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      405017 : static void write_packet(OutputFile *of, AVPacket *pkt, OutputStream *ost, int unqueue)
     672             : {
     673      405017 :     AVFormatContext *s = of->ctx;
     674      405017 :     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      405017 :     if (!(st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && ost->encoding_needed) && !unqueue) {
     686      310334 :         if (ost->frame_number >= ost->max_frames) {
     687         313 :             av_packet_unref(pkt);
     688         313 :             return;
     689             :         }
     690      310021 :         ost->frame_number++;
     691             :     }
     692             : 
     693      404704 :     if (!of->header_written) {
     694         270 :         AVPacket tmp_pkt = {0};
     695             :         /* the muxer is not initialized yet, buffer the packet */
     696         270 :         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         270 :         ret = av_packet_ref(&tmp_pkt, pkt);
     710         270 :         if (ret < 0)
     711           0 :             exit_program(1);
     712         270 :         av_fifo_generic_write(ost->muxing_queue, &tmp_pkt, sizeof(tmp_pkt), NULL);
     713         270 :         av_packet_unref(pkt);
     714         270 :         return;
     715             :     }
     716             : 
     717      785547 :     if ((st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && video_sync_method == VSYNC_DROP) ||
     718      686446 :         (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO && audio_sync_method < 0))
     719       23321 :         pkt->pts = pkt->dts = AV_NOPTS_VALUE;
     720             : 
     721      404434 :     if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
     722             :         int i;
     723       97999 :         uint8_t *sd = av_packet_get_side_data(pkt, AV_PKT_DATA_QUALITY_STATS,
     724             :                                               NULL);
     725       97999 :         ost->quality = sd ? AV_RL32(sd) : -1;
     726       97999 :         ost->pict_type = sd ? sd[4] : AV_PICTURE_TYPE_NONE;
     727             : 
     728      489995 :         for (i = 0; i<FF_ARRAY_ELEMS(ost->error); i++) {
     729      391996 :             if (sd && i < sd[5])
     730           0 :                 ost->error[i] = AV_RL64(sd + 8 + 8*i);
     731             :             else
     732      391996 :                 ost->error[i] = -1;
     733             :         }
     734             : 
     735       97999 :         if (ost->frame_rate.num && ost->is_cfr) {
     736        8394 :             if (pkt->duration > 0)
     737           0 :                 av_log(NULL, AV_LOG_WARNING, "Overriding packet duration by frame rate, this should not happen\n");
     738        8394 :             pkt->duration = av_rescale_q(1, av_inv_q(ost->frame_rate),
     739             :                                          ost->mux_timebase);
     740             :         }
     741             :     }
     742             : 
     743      404434 :     av_packet_rescale_ts(pkt, ost->mux_timebase, ost->st->time_base);
     744             : 
     745      404434 :     if (!(s->oformat->flags & AVFMT_NOTIMESTAMPS)) {
     746      325975 :         if (pkt->dts != AV_NOPTS_VALUE &&
     747      302135 :             pkt->pts != AV_NOPTS_VALUE &&
     748      150808 :             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      348698 :         if ((st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO || st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) &&
     758      324779 :             pkt->dts != AV_NOPTS_VALUE &&
     759      301458 :             !(st->codecpar->codec_id == AV_CODEC_ID_VP9 && ost->stream_copy) &&
     760      150676 :             ost->last_mux_dts != AV_NOPTS_VALUE) {
     761      146837 :             int64_t max = ost->last_mux_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT);
     762      146837 :             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      404434 :     ost->last_mux_dts = pkt->dts;
     781             : 
     782      404434 :     ost->data_size += pkt->size;
     783      404434 :     ost->packets_written++;
     784             : 
     785      404434 :     pkt->stream_index = ost->index;
     786             : 
     787      404434 :     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      404434 :     ret = av_interleaved_write_frame(s, pkt);
     798      404434 :     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      404434 :     av_packet_unref(pkt);
     804             : }
     805             : 
     806        5107 : static void close_output_stream(OutputStream *ost)
     807             : {
     808        5107 :     OutputFile *of = output_files[ost->file_index];
     809             : 
     810        5107 :     ost->finished |= ENCODER_FINISHED;
     811        5107 :     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        5107 : }
     816             : 
     817      404748 : static void output_packet(OutputFile *of, AVPacket *pkt, OutputStream *ost)
     818             : {
     819      404748 :     int ret = 0;
     820             : 
     821             :     /* apply the output bitstream filters, if any */
     822      404748 :     if (ost->nb_bitstream_filters) {
     823             :         int idx;
     824             : 
     825         309 :         ret = av_bsf_send_packet(ost->bsf_ctx[0], pkt);
     826         309 :         if (ret < 0)
     827           0 :             goto finish;
     828             : 
     829         309 :         idx = 1;
     830        1234 :         while (idx) {
     831             :             /* get a packet from the previous filter up the chain */
     832         617 :             ret = av_bsf_receive_packet(ost->bsf_ctx[idx - 1], pkt);
     833         617 :             if (ret == AVERROR(EAGAIN)) {
     834         308 :                 ret = 0;
     835         308 :                 idx--;
     836         308 :                 continue;
     837         309 :             } else if (ret < 0)
     838           1 :                 goto finish;
     839             : 
     840             :             /* send it to the next filter down the chain or to the muxer */
     841         308 :             if (idx < ost->nb_bitstream_filters) {
     842           0 :                 ret = av_bsf_send_packet(ost->bsf_ctx[idx], pkt);
     843           0 :                 if (ret < 0)
     844           0 :                     goto finish;
     845           0 :                 idx++;
     846             :             } else
     847         308 :                 write_packet(of, pkt, ost, 0);
     848             :         }
     849             :     } else
     850      404439 :         write_packet(of, pkt, ost, 0);
     851             : 
     852             : finish:
     853      404748 :     if (ret < 0 && ret != AVERROR_EOF) {
     854           1 :         av_log(NULL, AV_LOG_ERROR, "Error applying bitstream filters to an output "
     855             :                "packet for stream #%d:%d.\n", ost->file_index, ost->index);
     856           1 :         if(exit_on_error)
     857           0 :             exit_program(1);
     858             :     }
     859      404748 : }
     860             : 
     861      384786 : static int check_recording_time(OutputStream *ost)
     862             : {
     863      384786 :     OutputFile *of = output_files[ost->file_index];
     864             : 
     865      390787 :     if (of->recording_time != INT64_MAX &&
     866        6001 :         av_compare_ts(ost->sync_opts - ost->first_pts, ost->enc_ctx->time_base, of->recording_time,
     867        6001 :                       AV_TIME_BASE_Q) >= 0) {
     868           1 :         close_output_stream(ost);
     869           1 :         return 0;
     870             :     }
     871      384785 :     return 1;
     872             : }
     873             : 
     874      289790 : static void do_audio_out(OutputFile *of, OutputStream *ost,
     875             :                          AVFrame *frame)
     876             : {
     877      289790 :     AVCodecContext *enc = ost->enc_ctx;
     878             :     AVPacket pkt;
     879             :     int ret;
     880             : 
     881      289790 :     av_init_packet(&pkt);
     882      289790 :     pkt.data = NULL;
     883      289790 :     pkt.size = 0;
     884             : 
     885      289790 :     if (!check_recording_time(ost))
     886           0 :         return;
     887             : 
     888      289790 :     if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
     889           0 :         frame->pts = ost->sync_opts;
     890      289790 :     ost->sync_opts = frame->pts + frame->nb_samples;
     891      289790 :     ost->samples_encoded += frame->nb_samples;
     892      289790 :     ost->frames_encoded++;
     893             : 
     894      289790 :     av_assert0(pkt.size || !pkt.data);
     895      289790 :     update_benchmark(NULL);
     896      289790 :     if (debug_ts) {
     897           0 :         av_log(NULL, AV_LOG_INFO, "encoder <- type:audio "
     898             :                "frame_pts:%s frame_pts_time:%s time_base:%d/%d\n",
     899           0 :                av_ts2str(frame->pts), av_ts2timestr(frame->pts, &enc->time_base),
     900             :                enc->time_base.num, enc->time_base.den);
     901             :     }
     902             : 
     903      289790 :     ret = avcodec_send_frame(enc, frame);
     904      289790 :     if (ret < 0)
     905           0 :         goto error;
     906             : 
     907             :     while (1) {
     908      289771 :         ret = avcodec_receive_packet(enc, &pkt);
     909      579561 :         if (ret == AVERROR(EAGAIN))
     910      289790 :             break;
     911      289771 :         if (ret < 0)
     912           0 :             goto error;
     913             : 
     914      289771 :         update_benchmark("encode_audio %d.%d", ost->file_index, ost->index);
     915             : 
     916      289771 :         av_packet_rescale_ts(&pkt, enc->time_base, ost->mux_timebase);
     917             : 
     918      289771 :         if (debug_ts) {
     919           0 :             av_log(NULL, AV_LOG_INFO, "encoder -> type:audio "
     920             :                    "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
     921           0 :                    av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &enc->time_base),
     922           0 :                    av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &enc->time_base));
     923             :         }
     924             : 
     925      289771 :         output_packet(of, &pkt, ost);
     926             :     }
     927             : 
     928      289790 :     return;
     929             : error:
     930           0 :     av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
     931           0 :     exit_program(1);
     932             : }
     933             : 
     934         582 : static void do_subtitle_out(OutputFile *of,
     935             :                             OutputStream *ost,
     936             :                             AVSubtitle *sub)
     937             : {
     938         582 :     int subtitle_out_max_size = 1024 * 1024;
     939             :     int subtitle_out_size, nb, i;
     940             :     AVCodecContext *enc;
     941             :     AVPacket pkt;
     942             :     int64_t pts;
     943             : 
     944         582 :     if (sub->pts == AV_NOPTS_VALUE) {
     945           0 :         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
     946           0 :         if (exit_on_error)
     947           0 :             exit_program(1);
     948           0 :         return;
     949             :     }
     950             : 
     951         582 :     enc = ost->enc_ctx;
     952             : 
     953         582 :     if (!subtitle_out) {
     954          28 :         subtitle_out = av_malloc(subtitle_out_max_size);
     955          28 :         if (!subtitle_out) {
     956           0 :             av_log(NULL, AV_LOG_FATAL, "Failed to allocate subtitle_out\n");
     957           0 :             exit_program(1);
     958             :         }
     959             :     }
     960             : 
     961             :     /* Note: DVB subtitle need one packet to draw them and one other
     962             :        packet to clear them */
     963             :     /* XXX: signal it in the codec context ? */
     964         582 :     if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE)
     965           0 :         nb = 2;
     966             :     else
     967         582 :         nb = 1;
     968             : 
     969             :     /* shift timestamp to honor -ss and make check_recording_time() work with -t */
     970         582 :     pts = sub->pts;
     971         582 :     if (output_files[ost->file_index]->start_time != AV_NOPTS_VALUE)
     972           0 :         pts -= output_files[ost->file_index]->start_time;
     973        1164 :     for (i = 0; i < nb; i++) {
     974         582 :         unsigned save_num_rects = sub->num_rects;
     975             : 
     976         582 :         ost->sync_opts = av_rescale_q(pts, AV_TIME_BASE_Q, enc->time_base);
     977         582 :         if (!check_recording_time(ost))
     978           0 :             return;
     979             : 
     980         582 :         sub->pts = pts;
     981             :         // start_display_time is required to be 0
     982         582 :         sub->pts               += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
     983         582 :         sub->end_display_time  -= sub->start_display_time;
     984         582 :         sub->start_display_time = 0;
     985         582 :         if (i == 1)
     986           0 :             sub->num_rects = 0;
     987             : 
     988         582 :         ost->frames_encoded++;
     989             : 
     990         582 :         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
     991             :                                                     subtitle_out_max_size, sub);
     992         582 :         if (i == 1)
     993           0 :             sub->num_rects = save_num_rects;
     994         582 :         if (subtitle_out_size < 0) {
     995           0 :             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
     996           0 :             exit_program(1);
     997             :         }
     998             : 
     999         582 :         av_init_packet(&pkt);
    1000         582 :         pkt.data = subtitle_out;
    1001         582 :         pkt.size = subtitle_out_size;
    1002         582 :         pkt.pts  = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->mux_timebase);
    1003         582 :         pkt.duration = av_rescale_q(sub->end_display_time, (AVRational){ 1, 1000 }, ost->mux_timebase);
    1004         582 :         if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
    1005             :             /* XXX: the pts correction is handled here. Maybe handling
    1006             :                it in the codec would be better */
    1007           0 :             if (i == 0)
    1008           0 :                 pkt.pts += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, ost->mux_timebase);
    1009             :             else
    1010           0 :                 pkt.pts += av_rescale_q(sub->end_display_time, (AVRational){ 1, 1000 }, ost->mux_timebase);
    1011             :         }
    1012         582 :         pkt.dts = pkt.pts;
    1013         582 :         output_packet(of, &pkt, ost);
    1014             :     }
    1015             : }
    1016             : 
    1017       96590 : static void do_video_out(OutputFile *of,
    1018             :                          OutputStream *ost,
    1019             :                          AVFrame *next_picture,
    1020             :                          double sync_ipts)
    1021             : {
    1022             :     int ret, format_video_sync;
    1023             :     AVPacket pkt;
    1024       96590 :     AVCodecContext *enc = ost->enc_ctx;
    1025       96590 :     AVCodecParameters *mux_par = ost->st->codecpar;
    1026             :     AVRational frame_rate;
    1027             :     int nb_frames, nb0_frames, i;
    1028             :     double delta, delta0;
    1029       96590 :     double duration = 0;
    1030       96590 :     int frame_size = 0;
    1031       96590 :     InputStream *ist = NULL;
    1032       96590 :     AVFilterContext *filter = ost->filter->filter;
    1033             : 
    1034       96590 :     if (ost->source_index >= 0)
    1035       95511 :         ist = input_streams[ost->source_index];
    1036             : 
    1037       96590 :     frame_rate = av_buffersink_get_frame_rate(filter);
    1038       96590 :     if (frame_rate.num > 0 && frame_rate.den > 0)
    1039       96590 :         duration = 1/(av_q2d(frame_rate) * av_q2d(enc->time_base));
    1040             : 
    1041       96590 :     if(ist && ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE && ost->frame_rate.num)
    1042       61168 :         duration = FFMIN(duration, 1/(av_q2d(ost->frame_rate) * av_q2d(enc->time_base)));
    1043             : 
    1044      193083 :     if (!ost->filters_script &&
    1045      187174 :         !ost->filters &&
    1046       88499 :         next_picture &&
    1047       87437 :         ist &&
    1048       87437 :         lrintf(next_picture->pkt_duration * av_q2d(ist->st->time_base) / av_q2d(enc->time_base)) > 0) {
    1049       82661 :         duration = lrintf(next_picture->pkt_duration * av_q2d(ist->st->time_base) / av_q2d(enc->time_base));
    1050             :     }
    1051             : 
    1052       96590 :     if (!next_picture) {
    1053             :         //end, flushing
    1054        2240 :         nb0_frames = nb_frames = mid_pred(ost->last_nb0_frames[0],
    1055             :                                           ost->last_nb0_frames[1],
    1056             :                                           ost->last_nb0_frames[2]);
    1057             :     } else {
    1058       94350 :         delta0 = sync_ipts - ost->sync_opts; // delta0 is the "drift" between the input frame (next_picture) and where it would fall in the output.
    1059       94350 :         delta  = delta0 + duration;
    1060             : 
    1061             :         /* by default, we output a single frame */
    1062       94350 :         nb0_frames = 0; // tracks the number of times the PREVIOUS frame should be duplicated, mostly for variable framerate (VFR)
    1063       94350 :         nb_frames = 1;
    1064             : 
    1065       94350 :         format_video_sync = video_sync_method;
    1066       94350 :         if (format_video_sync == VSYNC_AUTO) {
    1067       52609 :             if(!strcmp(of->ctx->oformat->name, "avi")) {
    1068       12500 :                 format_video_sync = VSYNC_VFR;
    1069             :             } else
    1070       40109 :                 format_video_sync = (of->ctx->oformat->flags & AVFMT_VARIABLE_FPS) ? ((of->ctx->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH : VSYNC_VFR) : VSYNC_CFR;
    1071       52609 :             if (   ist
    1072       51547 :                 && format_video_sync == VSYNC_CFR
    1073        8044 :                 && input_files[ist->file_index]->ctx->nb_streams == 1
    1074        7049 :                 && input_files[ist->file_index]->input_ts_offset == 0) {
    1075        7049 :                 format_video_sync = VSYNC_VSCFR;
    1076             :             }
    1077       52609 :             if (format_video_sync == VSYNC_CFR && copy_ts) {
    1078           0 :                 format_video_sync = VSYNC_VSCFR;
    1079             :             }
    1080             :         }
    1081       94350 :         ost->is_cfr = (format_video_sync == VSYNC_CFR || format_video_sync == VSYNC_VSCFR);
    1082             : 
    1083       94350 :         if (delta0 < 0 &&
    1084       10523 :             delta > 0 &&
    1085       10125 :             format_video_sync != VSYNC_PASSTHROUGH &&
    1086             :             format_video_sync != VSYNC_DROP) {
    1087        7357 :             if (delta0 < -0.6) {
    1088         464 :                 av_log(NULL, AV_LOG_WARNING, "Past duration %f too large\n", -delta0);
    1089             :             } else
    1090        6893 :                 av_log(NULL, AV_LOG_DEBUG, "Clipping frame in rate conversion by %f\n", -delta0);
    1091        7357 :             sync_ipts = ost->sync_opts;
    1092        7357 :             duration += delta0;
    1093        7357 :             delta0 = 0;
    1094             :         }
    1095             : 
    1096       94350 :         switch (format_video_sync) {
    1097             :         case VSYNC_VSCFR:
    1098        7049 :             if (ost->frame_number == 0 && delta0 >= 0.5) {
    1099           0 :                 av_log(NULL, AV_LOG_DEBUG, "Not duplicating %d initial frames\n", (int)lrintf(delta0));
    1100           0 :                 delta = duration;
    1101           0 :                 delta0 = 0;
    1102           0 :                 ost->sync_opts = lrint(sync_ipts);
    1103             :             }
    1104             :         case VSYNC_CFR:
    1105             :             // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
    1106        8183 :             if (frame_drop_threshold && delta < frame_drop_threshold && ost->frame_number) {
    1107           0 :                 nb_frames = 0;
    1108        8183 :             } else if (delta < -1.1)
    1109           0 :                 nb_frames = 0;
    1110        8183 :             else if (delta > 1.1) {
    1111         375 :                 nb_frames = lrintf(delta);
    1112         375 :                 if (delta0 > 1.1)
    1113           2 :                     nb0_frames = lrintf(delta0 - 0.6);
    1114             :             }
    1115        8183 :             break;
    1116             :         case VSYNC_VFR:
    1117       44568 :             if (delta <= -0.6)
    1118         145 :                 nb_frames = 0;
    1119       44423 :             else if (delta > 0.6)
    1120       43806 :                 ost->sync_opts = lrint(sync_ipts);
    1121       44568 :             break;
    1122             :         case VSYNC_DROP:
    1123             :         case VSYNC_PASSTHROUGH:
    1124       41599 :             ost->sync_opts = lrint(sync_ipts);
    1125       41599 :             break;
    1126             :         default:
    1127           0 :             av_assert0(0);
    1128             :         }
    1129             :     }
    1130             : 
    1131       96590 :     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
    1132       96590 :     nb0_frames = FFMIN(nb0_frames, nb_frames);
    1133             : 
    1134       96590 :     memmove(ost->last_nb0_frames + 1,
    1135       96590 :             ost->last_nb0_frames,
    1136             :             sizeof(ost->last_nb0_frames[0]) * (FF_ARRAY_ELEMS(ost->last_nb0_frames) - 1));
    1137       96590 :     ost->last_nb0_frames[0] = nb0_frames;
    1138             : 
    1139       96590 :     if (nb0_frames == 0 && ost->last_dropped) {
    1140         145 :         nb_frames_drop++;
    1141         290 :         av_log(NULL, AV_LOG_VERBOSE,
    1142             :                "*** dropping frame %d from stream %d at ts %"PRId64"\n",
    1143         290 :                ost->frame_number, ost->st->index, ost->last_frame->pts);
    1144             :     }
    1145       96590 :     if (nb_frames > (nb0_frames && ost->last_dropped) + (nb_frames > nb0_frames)) {
    1146          49 :         if (nb_frames > dts_error_threshold * 30) {
    1147           0 :             av_log(NULL, AV_LOG_ERROR, "%d frame duplication too large, skipping\n", nb_frames - 1);
    1148           0 :             nb_frames_drop++;
    1149           0 :             return;
    1150             :         }
    1151          49 :         nb_frames_dup += nb_frames - (nb0_frames && ost->last_dropped) - (nb_frames > nb0_frames);
    1152          49 :         av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
    1153          49 :         if (nb_frames_dup > dup_warning) {
    1154           0 :             av_log(NULL, AV_LOG_WARNING, "More than %d frames duplicated\n", dup_warning);
    1155           0 :             dup_warning *= 10;
    1156             :         }
    1157             :     }
    1158       96590 :     ost->last_dropped = nb_frames == nb0_frames && next_picture;
    1159             : 
    1160             :   /* duplicates frame if needed */
    1161      191003 :   for (i = 0; i < nb_frames; i++) {
    1162             :     AVFrame *in_picture;
    1163       94414 :     av_init_packet(&pkt);
    1164       94414 :     pkt.data = NULL;
    1165       94414 :     pkt.size = 0;
    1166             : 
    1167       94414 :     if (i < nb0_frames && ost->last_frame) {
    1168          69 :         in_picture = ost->last_frame;
    1169             :     } else
    1170       94345 :         in_picture = next_picture;
    1171             : 
    1172       94414 :     if (!in_picture)
    1173           0 :         return;
    1174             : 
    1175       94414 :     in_picture->pts = ost->sync_opts;
    1176             : 
    1177             : #if 1
    1178       94414 :     if (!check_recording_time(ost))
    1179             : #else
    1180             :     if (ost->frame_number >= ost->max_frames)
    1181             : #endif
    1182           1 :         return;
    1183             : 
    1184             : #if FF_API_LAVF_FMT_RAWPICTURE
    1185       94413 :     if (of->ctx->oformat->flags & AVFMT_RAWPICTURE &&
    1186           0 :         enc->codec->id == AV_CODEC_ID_RAWVIDEO) {
    1187             :         /* raw pictures are written as AVPicture structure to
    1188             :            avoid any copies. We support temporarily the older
    1189             :            method. */
    1190           0 :         if (in_picture->interlaced_frame)
    1191           0 :             mux_par->field_order = in_picture->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
    1192             :         else
    1193           0 :             mux_par->field_order = AV_FIELD_PROGRESSIVE;
    1194           0 :         pkt.data   = (uint8_t *)in_picture;
    1195           0 :         pkt.size   =  sizeof(AVPicture);
    1196           0 :         pkt.pts    = av_rescale_q(in_picture->pts, enc->time_base, ost->mux_timebase);
    1197           0 :         pkt.flags |= AV_PKT_FLAG_KEY;
    1198             : 
    1199           0 :         output_packet(of, &pkt, ost);
    1200             :     } else
    1201             : #endif
    1202             :     {
    1203       94413 :         int forced_keyframe = 0;
    1204             :         double pts_time;
    1205             : 
    1206       95293 :         if (enc->flags & (AV_CODEC_FLAG_INTERLACED_DCT | AV_CODEC_FLAG_INTERLACED_ME) &&
    1207         880 :             ost->top_field_first >= 0)
    1208          25 :             in_picture->top_field_first = !!ost->top_field_first;
    1209             : 
    1210       94413 :         if (in_picture->interlaced_frame) {
    1211        6224 :             if (enc->codec->id == AV_CODEC_ID_MJPEG)
    1212           0 :                 mux_par->field_order = in_picture->top_field_first ? AV_FIELD_TT:AV_FIELD_BB;
    1213             :             else
    1214        6224 :                 mux_par->field_order = in_picture->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
    1215             :         } else
    1216       88189 :             mux_par->field_order = AV_FIELD_PROGRESSIVE;
    1217             : 
    1218       94413 :         in_picture->quality = enc->global_quality;
    1219       94413 :         in_picture->pict_type = 0;
    1220             : 
    1221      188826 :         pts_time = in_picture->pts != AV_NOPTS_VALUE ?
    1222       94413 :             in_picture->pts * av_q2d(enc->time_base) : NAN;
    1223       94452 :         if (ost->forced_kf_index < ost->forced_kf_count &&
    1224          39 :             in_picture->pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
    1225           2 :             ost->forced_kf_index++;
    1226           2 :             forced_keyframe = 1;
    1227       94411 :         } else if (ost->forced_keyframes_pexpr) {
    1228             :             double res;
    1229           0 :             ost->forced_keyframes_expr_const_values[FKF_T] = pts_time;
    1230           0 :             res = av_expr_eval(ost->forced_keyframes_pexpr,
    1231           0 :                                ost->forced_keyframes_expr_const_values, NULL);
    1232             :             ff_dlog(NULL, "force_key_frame: n:%f n_forced:%f prev_forced_n:%f t:%f prev_forced_t:%f -> res:%f\n",
    1233             :                     ost->forced_keyframes_expr_const_values[FKF_N],
    1234             :                     ost->forced_keyframes_expr_const_values[FKF_N_FORCED],
    1235             :                     ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N],
    1236             :                     ost->forced_keyframes_expr_const_values[FKF_T],
    1237             :                     ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T],
    1238             :                     res);
    1239           0 :             if (res) {
    1240           0 :                 forced_keyframe = 1;
    1241           0 :                 ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N] =
    1242           0 :                     ost->forced_keyframes_expr_const_values[FKF_N];
    1243           0 :                 ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T] =
    1244           0 :                     ost->forced_keyframes_expr_const_values[FKF_T];
    1245           0 :                 ost->forced_keyframes_expr_const_values[FKF_N_FORCED] += 1;
    1246             :             }
    1247             : 
    1248           0 :             ost->forced_keyframes_expr_const_values[FKF_N] += 1;
    1249       94411 :         } else if (   ost->forced_keyframes
    1250          48 :                    && !strncmp(ost->forced_keyframes, "source", 6)
    1251           0 :                    && in_picture->key_frame==1) {
    1252           0 :             forced_keyframe = 1;
    1253             :         }
    1254             : 
    1255       94413 :         if (forced_keyframe) {
    1256           2 :             in_picture->pict_type = AV_PICTURE_TYPE_I;
    1257           2 :             av_log(NULL, AV_LOG_DEBUG, "Forced keyframe at time %f\n", pts_time);
    1258             :         }
    1259             : 
    1260       94413 :         update_benchmark(NULL);
    1261       94413 :         if (debug_ts) {
    1262           0 :             av_log(NULL, AV_LOG_INFO, "encoder <- type:video "
    1263             :                    "frame_pts:%s frame_pts_time:%s time_base:%d/%d\n",
    1264           0 :                    av_ts2str(in_picture->pts), av_ts2timestr(in_picture->pts, &enc->time_base),
    1265             :                    enc->time_base.num, enc->time_base.den);
    1266             :         }
    1267             : 
    1268       94413 :         ost->frames_encoded++;
    1269             : 
    1270       94413 :         ret = avcodec_send_frame(enc, in_picture);
    1271       94413 :         if (ret < 0)
    1272           0 :             goto error;
    1273             : 
    1274             :         while (1) {
    1275      282863 :             ret = avcodec_receive_packet(enc, &pkt);
    1276      188638 :             update_benchmark("encode_video %d.%d", ost->file_index, ost->index);
    1277      188638 :             if (ret == AVERROR(EAGAIN))
    1278       94413 :                 break;
    1279       94225 :             if (ret < 0)
    1280           0 :                 goto error;
    1281             : 
    1282       94225 :             if (debug_ts) {
    1283           0 :                 av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
    1284             :                        "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
    1285           0 :                        av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &enc->time_base),
    1286           0 :                        av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &enc->time_base));
    1287             :             }
    1288             : 
    1289       94225 :             if (pkt.pts == AV_NOPTS_VALUE && !(enc->codec->capabilities & AV_CODEC_CAP_DELAY))
    1290           0 :                 pkt.pts = ost->sync_opts;
    1291             : 
    1292       94225 :             av_packet_rescale_ts(&pkt, enc->time_base, ost->mux_timebase);
    1293             : 
    1294       94225 :             if (debug_ts) {
    1295           0 :                 av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
    1296             :                     "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
    1297           0 :                     av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->mux_timebase),
    1298           0 :                     av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->mux_timebase));
    1299             :             }
    1300             : 
    1301       94225 :             frame_size = pkt.size;
    1302       94225 :             output_packet(of, &pkt, ost);
    1303             : 
    1304             :             /* if two pass, output log */
    1305       94225 :             if (ost->logfile && enc->stats_out) {
    1306           0 :                 fprintf(ost->logfile, "%s", enc->stats_out);
    1307             :             }
    1308             :         }
    1309             :     }
    1310       94413 :     ost->sync_opts++;
    1311             :     /*
    1312             :      * For video, number of frames in == number of packets out.
    1313             :      * But there may be reordering, so we can't throw away frames on encoder
    1314             :      * flush, we need to limit them here, before they go into encoder.
    1315             :      */
    1316       94413 :     ost->frame_number++;
    1317             : 
    1318       94413 :     if (vstats_filename && frame_size)
    1319           0 :         do_video_stats(ost, frame_size);
    1320             :   }
    1321             : 
    1322       96589 :     if (!ost->last_frame)
    1323        4121 :         ost->last_frame = av_frame_alloc();
    1324       96589 :     av_frame_unref(ost->last_frame);
    1325       96589 :     if (next_picture && ost->last_frame)
    1326       94349 :         av_frame_ref(ost->last_frame, next_picture);
    1327             :     else
    1328        2240 :         av_frame_free(&ost->last_frame);
    1329             : 
    1330       96589 :     return;
    1331             : error:
    1332           0 :     av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
    1333           0 :     exit_program(1);
    1334             : }
    1335             : 
    1336           0 : static double psnr(double d)
    1337             : {
    1338           0 :     return -10.0 * log10(d);
    1339             : }
    1340             : 
    1341           0 : static void do_video_stats(OutputStream *ost, int frame_size)
    1342             : {
    1343             :     AVCodecContext *enc;
    1344             :     int frame_number;
    1345             :     double ti1, bitrate, avg_bitrate;
    1346             : 
    1347             :     /* this is executed just the first time do_video_stats is called */
    1348           0 :     if (!vstats_file) {
    1349           0 :         vstats_file = fopen(vstats_filename, "w");
    1350           0 :         if (!vstats_file) {
    1351           0 :             perror("fopen");
    1352           0 :             exit_program(1);
    1353             :         }
    1354             :     }
    1355             : 
    1356           0 :     enc = ost->enc_ctx;
    1357           0 :     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
    1358           0 :         frame_number = ost->st->nb_frames;
    1359           0 :         if (vstats_version <= 1) {
    1360           0 :             fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number,
    1361           0 :                     ost->quality / (float)FF_QP2LAMBDA);
    1362             :         } else  {
    1363           0 :             fprintf(vstats_file, "out= %2d st= %2d frame= %5d q= %2.1f ", ost->file_index, ost->index, frame_number,
    1364           0 :                     ost->quality / (float)FF_QP2LAMBDA);
    1365             :         }
    1366             : 
    1367           0 :         if (ost->error[0]>=0 && (enc->flags & AV_CODEC_FLAG_PSNR))
    1368           0 :             fprintf(vstats_file, "PSNR= %6.2f ", psnr(ost->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
    1369             : 
    1370           0 :         fprintf(vstats_file,"f_size= %6d ", frame_size);
    1371             :         /* compute pts value */
    1372           0 :         ti1 = av_stream_get_end_pts(ost->st) * av_q2d(ost->st->time_base);
    1373           0 :         if (ti1 < 0.01)
    1374           0 :             ti1 = 0.01;
    1375             : 
    1376           0 :         bitrate     = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
    1377           0 :         avg_bitrate = (double)(ost->data_size * 8) / ti1 / 1000.0;
    1378           0 :         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
    1379           0 :                (double)ost->data_size / 1024, ti1, bitrate, avg_bitrate);
    1380           0 :         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(ost->pict_type));
    1381             :     }
    1382           0 : }
    1383             : 
    1384             : static int init_output_stream(OutputStream *ost, char *error, int error_len);
    1385             : 
    1386         192 : static void finish_output_stream(OutputStream *ost)
    1387             : {
    1388         192 :     OutputFile *of = output_files[ost->file_index];
    1389             :     int i;
    1390             : 
    1391         192 :     ost->finished = ENCODER_FINISHED | MUXER_FINISHED;
    1392             : 
    1393         192 :     if (of->shortest) {
    1394           0 :         for (i = 0; i < of->ctx->nb_streams; i++)
    1395           0 :             output_streams[of->ost_index + i]->finished = ENCODER_FINISHED | MUXER_FINISHED;
    1396             :     }
    1397         192 : }
    1398             : 
    1399             : /**
    1400             :  * Get and encode new output from any of the filtergraphs, without causing
    1401             :  * activity.
    1402             :  *
    1403             :  * @return  0 for success, <0 for severe errors
    1404             :  */
    1405      393609 : static int reap_filters(int flush)
    1406             : {
    1407      393609 :     AVFrame *filtered_frame = NULL;
    1408             :     int i;
    1409             : 
    1410             :     /* Reap all buffers present in the buffer sinks */
    1411      800757 :     for (i = 0; i < nb_output_streams; i++) {
    1412      407148 :         OutputStream *ost = output_streams[i];
    1413      407148 :         OutputFile    *of = output_files[ost->file_index];
    1414             :         AVFilterContext *filter;
    1415      407148 :         AVCodecContext *enc = ost->enc_ctx;
    1416      407148 :         int ret = 0;
    1417             : 
    1418      407148 :         if (!ost->filter || !ost->filter->graph->graph)
    1419       35113 :             continue;
    1420      372035 :         filter = ost->filter->filter;
    1421             : 
    1422      372035 :         if (!ost->initialized) {
    1423        5095 :             char error[1024] = "";
    1424        5095 :             ret = init_output_stream(ost, error, sizeof(error));
    1425        5095 :             if (ret < 0) {
    1426           0 :                 av_log(NULL, AV_LOG_ERROR, "Error initializing output stream %d:%d -- %s\n",
    1427             :                        ost->file_index, ost->index, error);
    1428           0 :                 exit_program(1);
    1429             :             }
    1430             :         }
    1431             : 
    1432      372035 :         if (!ost->filtered_frame && !(ost->filtered_frame = av_frame_alloc())) {
    1433           0 :             return AVERROR(ENOMEM);
    1434             :         }
    1435      372035 :         filtered_frame = ost->filtered_frame;
    1436             : 
    1437      384140 :         while (1) {
    1438      756175 :             double float_pts = AV_NOPTS_VALUE; // this is identical to filtered_frame.pts but with higher precision
    1439      756175 :             ret = av_buffersink_get_frame_flags(filter, filtered_frame,
    1440             :                                                AV_BUFFERSINK_FLAG_NO_REQUEST);
    1441      756175 :             if (ret < 0) {
    1442      372035 :                 if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF) {
    1443           0 :                     av_log(NULL, AV_LOG_WARNING,
    1444           0 :                            "Error in av_buffersink_get_frame_flags(): %s\n", av_err2str(ret));
    1445      372035 :                 } else if (flush && ret == AVERROR_EOF) {
    1446        3334 :                     if (av_buffersink_get_type(filter) == AVMEDIA_TYPE_VIDEO)
    1447        2240 :                         do_video_out(of, ost, NULL, AV_NOPTS_VALUE);
    1448             :                 }
    1449      372035 :                 break;
    1450             :             }
    1451      384140 :             if (ost->finished) {
    1452           0 :                 av_frame_unref(filtered_frame);
    1453           0 :                 continue;
    1454             :             }
    1455      384140 :             if (filtered_frame->pts != AV_NOPTS_VALUE) {
    1456      384140 :                 int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time;
    1457      384140 :                 AVRational filter_tb = av_buffersink_get_time_base(filter);
    1458      384140 :                 AVRational tb = enc->time_base;
    1459      384140 :                 int extra_bits = av_clip(29 - av_log2(tb.den), 0, 16);
    1460             : 
    1461      384140 :                 tb.den <<= extra_bits;
    1462      384140 :                 float_pts =
    1463      768280 :                     av_rescale_q(filtered_frame->pts, filter_tb, tb) -
    1464      384140 :                     av_rescale_q(start_time, AV_TIME_BASE_Q, tb);
    1465      384140 :                 float_pts /= 1 << extra_bits;
    1466             :                 // 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
    1467      384140 :                 float_pts += FFSIGN(float_pts) * 1.0 / (1<<17);
    1468             : 
    1469      384140 :                 filtered_frame->pts =
    1470      768280 :                     av_rescale_q(filtered_frame->pts, filter_tb, enc->time_base) -
    1471      384140 :                     av_rescale_q(start_time, AV_TIME_BASE_Q, enc->time_base);
    1472             :             }
    1473             :             //if (ost->source_index >= 0)
    1474             :             //    *filtered_frame= *input_streams[ost->source_index]->decoded_frame; //for me_threshold
    1475             : 
    1476      384140 :             switch (av_buffersink_get_type(filter)) {
    1477             :             case AVMEDIA_TYPE_VIDEO:
    1478       94350 :                 if (!ost->frame_aspect_ratio.num)
    1479       94350 :                     enc->sample_aspect_ratio = filtered_frame->sample_aspect_ratio;
    1480             : 
    1481       94350 :                 if (debug_ts) {
    1482           0 :                     av_log(NULL, AV_LOG_INFO, "filter -> pts:%s pts_time:%s exact:%f time_base:%d/%d\n",
    1483           0 :                             av_ts2str(filtered_frame->pts), av_ts2timestr(filtered_frame->pts, &enc->time_base),
    1484             :                             float_pts,
    1485             :                             enc->time_base.num, enc->time_base.den);
    1486             :                 }
    1487             : 
    1488       94350 :                 do_video_out(of, ost, filtered_frame, float_pts);
    1489       94350 :                 break;
    1490             :             case AVMEDIA_TYPE_AUDIO:
    1491      579580 :                 if (!(enc->codec->capabilities & AV_CODEC_CAP_PARAM_CHANGE) &&
    1492      289790 :                     enc->channels != filtered_frame->channels) {
    1493           0 :                     av_log(NULL, AV_LOG_ERROR,
    1494             :                            "Audio filter graph output is not normalized and encoder does not support parameter changes\n");
    1495           0 :                     break;
    1496             :                 }
    1497      289790 :                 do_audio_out(of, ost, filtered_frame);
    1498      289790 :                 break;
    1499             :             default:
    1500             :                 // TODO support subtitle filters
    1501           0 :                 av_assert0(0);
    1502             :             }
    1503             : 
    1504      384140 :             av_frame_unref(filtered_frame);
    1505             :         }
    1506             :     }
    1507             : 
    1508      393609 :     return 0;
    1509             : }
    1510             : 
    1511        5167 : static void print_final_stats(int64_t total_size)
    1512             : {
    1513        5167 :     uint64_t video_size = 0, audio_size = 0, extra_size = 0, other_size = 0;
    1514        5167 :     uint64_t subtitle_size = 0;
    1515        5167 :     uint64_t data_size = 0;
    1516        5167 :     float percent = -1.0;
    1517             :     int i, j;
    1518        5167 :     int pass1_used = 1;
    1519             : 
    1520       10467 :     for (i = 0; i < nb_output_streams; i++) {
    1521        5300 :         OutputStream *ost = output_streams[i];
    1522        5300 :         switch (ost->enc_ctx->codec_type) {
    1523        4119 :             case AVMEDIA_TYPE_VIDEO: video_size += ost->data_size; break;
    1524        1137 :             case AVMEDIA_TYPE_AUDIO: audio_size += ost->data_size; break;
    1525          34 :             case AVMEDIA_TYPE_SUBTITLE: subtitle_size += ost->data_size; break;
    1526          10 :             default:                 other_size += ost->data_size; break;
    1527             :         }
    1528        5300 :         extra_size += ost->enc_ctx->extradata_size;
    1529        5300 :         data_size  += ost->data_size;
    1530        5300 :         if (   (ost->enc_ctx->flags & (AV_CODEC_FLAG_PASS1 | AV_CODEC_FLAG_PASS2))
    1531             :             != AV_CODEC_FLAG_PASS1)
    1532        5300 :             pass1_used = 0;
    1533             :     }
    1534             : 
    1535        5167 :     if (data_size && total_size>0 && total_size >= data_size)
    1536        3523 :         percent = 100.0 * (total_size - data_size) / data_size;
    1537             : 
    1538        5167 :     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: ",
    1539             :            video_size / 1024.0,
    1540             :            audio_size / 1024.0,
    1541             :            subtitle_size / 1024.0,
    1542             :            other_size / 1024.0,
    1543             :            extra_size / 1024.0);
    1544        5167 :     if (percent >= 0.0)
    1545        3523 :         av_log(NULL, AV_LOG_INFO, "%f%%", percent);
    1546             :     else
    1547        1644 :         av_log(NULL, AV_LOG_INFO, "unknown");
    1548        5167 :     av_log(NULL, AV_LOG_INFO, "\n");
    1549             : 
    1550             :     /* print verbose per-stream stats */
    1551       10393 :     for (i = 0; i < nb_input_files; i++) {
    1552        5226 :         InputFile *f = input_files[i];
    1553        5226 :         uint64_t total_packets = 0, total_size = 0;
    1554             : 
    1555        5226 :         av_log(NULL, AV_LOG_VERBOSE, "Input file #%d (%s):\n",
    1556        5226 :                i, f->ctx->filename);
    1557             : 
    1558       10751 :         for (j = 0; j < f->nb_streams; j++) {
    1559        5525 :             InputStream *ist = input_streams[f->ist_index + j];
    1560        5525 :             enum AVMediaType type = ist->dec_ctx->codec_type;
    1561             : 
    1562        5525 :             total_size    += ist->data_size;
    1563        5525 :             total_packets += ist->nb_packets;
    1564             : 
    1565        5525 :             av_log(NULL, AV_LOG_VERBOSE, "  Input stream #%d:%d (%s): ",
    1566             :                    i, j, media_type_string(type));
    1567        5525 :             av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" packets read (%"PRIu64" bytes); ",
    1568             :                    ist->nb_packets, ist->data_size);
    1569             : 
    1570        5525 :             if (ist->decoding_needed) {
    1571        5131 :                 av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" frames decoded",
    1572             :                        ist->frames_decoded);
    1573        5131 :                 if (type == AVMEDIA_TYPE_AUDIO)
    1574        1057 :                     av_log(NULL, AV_LOG_VERBOSE, " (%"PRIu64" samples)", ist->samples_decoded);
    1575        5131 :                 av_log(NULL, AV_LOG_VERBOSE, "; ");
    1576             :             }
    1577             : 
    1578        5525 :             av_log(NULL, AV_LOG_VERBOSE, "\n");
    1579             :         }
    1580             : 
    1581        5226 :         av_log(NULL, AV_LOG_VERBOSE, "  Total: %"PRIu64" packets (%"PRIu64" bytes) demuxed\n",
    1582             :                total_packets, total_size);
    1583             :     }
    1584             : 
    1585       10335 :     for (i = 0; i < nb_output_files; i++) {
    1586        5168 :         OutputFile *of = output_files[i];
    1587        5168 :         uint64_t total_packets = 0, total_size = 0;
    1588             : 
    1589        5168 :         av_log(NULL, AV_LOG_VERBOSE, "Output file #%d (%s):\n",
    1590        5168 :                i, of->ctx->filename);
    1591             : 
    1592       10468 :         for (j = 0; j < of->ctx->nb_streams; j++) {
    1593        5300 :             OutputStream *ost = output_streams[of->ost_index + j];
    1594        5300 :             enum AVMediaType type = ost->enc_ctx->codec_type;
    1595             : 
    1596        5300 :             total_size    += ost->data_size;
    1597        5300 :             total_packets += ost->packets_written;
    1598             : 
    1599        5300 :             av_log(NULL, AV_LOG_VERBOSE, "  Output stream #%d:%d (%s): ",
    1600             :                    i, j, media_type_string(type));
    1601        5300 :             if (ost->encoding_needed) {
    1602        5123 :                 av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" frames encoded",
    1603             :                        ost->frames_encoded);
    1604        5123 :                 if (type == AVMEDIA_TYPE_AUDIO)
    1605        1053 :                     av_log(NULL, AV_LOG_VERBOSE, " (%"PRIu64" samples)", ost->samples_encoded);
    1606        5123 :                 av_log(NULL, AV_LOG_VERBOSE, "; ");
    1607             :             }
    1608             : 
    1609        5300 :             av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" packets muxed (%"PRIu64" bytes); ",
    1610             :                    ost->packets_written, ost->data_size);
    1611             : 
    1612        5300 :             av_log(NULL, AV_LOG_VERBOSE, "\n");
    1613             :         }
    1614             : 
    1615        5168 :         av_log(NULL, AV_LOG_VERBOSE, "  Total: %"PRIu64" packets (%"PRIu64" bytes) muxed\n",
    1616             :                total_packets, total_size);
    1617             :     }
    1618        5167 :     if(video_size + data_size + audio_size + subtitle_size + extra_size == 0){
    1619           5 :         av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded ");
    1620           5 :         if (pass1_used) {
    1621           1 :             av_log(NULL, AV_LOG_WARNING, "\n");
    1622             :         } else {
    1623           4 :             av_log(NULL, AV_LOG_WARNING, "(check -ss / -t / -frames parameters if used)\n");
    1624             :         }
    1625             :     }
    1626        5167 : }
    1627             : 
    1628     2618450 : static void print_report(int is_last_report, int64_t timer_start, int64_t cur_time)
    1629             : {
    1630             :     char buf[1024];
    1631             :     AVBPrint buf_script;
    1632             :     OutputStream *ost;
    1633             :     AVFormatContext *oc;
    1634             :     int64_t total_size;
    1635             :     AVCodecContext *enc;
    1636             :     int frame_number, vid, i;
    1637             :     double bitrate;
    1638             :     double speed;
    1639     2618450 :     int64_t pts = INT64_MIN + 1;
    1640             :     static int64_t last_time = -1;
    1641             :     static int qp_histogram[52];
    1642             :     int hours, mins, secs, us;
    1643             :     int ret;
    1644             :     float t;
    1645             : 
    1646     2618450 :     if (!print_stats && !is_last_report && !progress_avio)
    1647     5223293 :         return;
    1648             : 
    1649        8440 :     if (!is_last_report) {
    1650        3273 :         if (last_time == -1) {
    1651          16 :             last_time = cur_time;
    1652          16 :             return;
    1653             :         }
    1654        3257 :         if ((cur_time - last_time) < 500000)
    1655        3257 :             return;
    1656           0 :         last_time = cur_time;
    1657             :     }
    1658             : 
    1659        5167 :     t = (cur_time-timer_start) / 1000000.0;
    1660             : 
    1661             : 
    1662        5167 :     oc = output_files[0]->ctx;
    1663             : 
    1664        5167 :     total_size = avio_size(oc->pb);
    1665        5167 :     if (total_size <= 0) // FIXME improve avio_size() so it works with non seekable output too
    1666          41 :         total_size = avio_tell(oc->pb);
    1667             : 
    1668        5167 :     buf[0] = '\0';
    1669        5167 :     vid = 0;
    1670        5167 :     av_bprint_init(&buf_script, 0, 1);
    1671       10467 :     for (i = 0; i < nb_output_streams; i++) {
    1672        5300 :         float q = -1;
    1673        5300 :         ost = output_streams[i];
    1674        5300 :         enc = ost->enc_ctx;
    1675        5300 :         if (!ost->stream_copy)
    1676        5124 :             q = ost->quality / (float) FF_QP2LAMBDA;
    1677             : 
    1678        5300 :         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
    1679           7 :             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
    1680           7 :             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
    1681             :                        ost->file_index, ost->index, q);
    1682             :         }
    1683        5300 :         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
    1684             :             float fps;
    1685             : 
    1686        4112 :             frame_number = ost->frame_number;
    1687        4112 :             fps = t > 1 ? frame_number / t : 0;
    1688        4112 :             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3.*f q=%3.1f ",
    1689             :                      frame_number, fps < 9.95, fps, q);
    1690        4112 :             av_bprintf(&buf_script, "frame=%d\n", frame_number);
    1691        4112 :             av_bprintf(&buf_script, "fps=%.1f\n", fps);
    1692        4112 :             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
    1693             :                        ost->file_index, ost->index, q);
    1694        4112 :             if (is_last_report)
    1695        4112 :                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
    1696        4112 :             if (qp_hist) {
    1697             :                 int j;
    1698           0 :                 int qp = lrintf(q);
    1699           0 :                 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
    1700           0 :                     qp_histogram[qp]++;
    1701           0 :                 for (j = 0; j < 32; j++)
    1702           0 :                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", av_log2(qp_histogram[j] + 1));
    1703             :             }
    1704             : 
    1705        4112 :             if ((enc->flags & AV_CODEC_FLAG_PSNR) && (ost->pict_type != AV_PICTURE_TYPE_NONE || is_last_report)) {
    1706             :                 int j;
    1707           0 :                 double error, error_sum = 0;
    1708           0 :                 double scale, scale_sum = 0;
    1709             :                 double p;
    1710           0 :                 char type[3] = { 'Y','U','V' };
    1711           0 :                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
    1712           0 :                 for (j = 0; j < 3; j++) {
    1713           0 :                     if (is_last_report) {
    1714           0 :                         error = enc->error[j];
    1715           0 :                         scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
    1716             :                     } else {
    1717           0 :                         error = ost->error[j];
    1718           0 :                         scale = enc->width * enc->height * 255.0 * 255.0;
    1719             :                     }
    1720           0 :                     if (j)
    1721           0 :                         scale /= 4;
    1722           0 :                     error_sum += error;
    1723           0 :                     scale_sum += scale;
    1724           0 :                     p = psnr(error / scale);
    1725           0 :                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], p);
    1726           0 :                     av_bprintf(&buf_script, "stream_%d_%d_psnr_%c=%2.2f\n",
    1727           0 :                                ost->file_index, ost->index, type[j] | 32, p);
    1728             :                 }
    1729           0 :                 p = psnr(error_sum / scale_sum);
    1730           0 :                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
    1731           0 :                 av_bprintf(&buf_script, "stream_%d_%d_psnr_all=%2.2f\n",
    1732             :                            ost->file_index, ost->index, p);
    1733             :             }
    1734        4112 :             vid = 1;
    1735             :         }
    1736             :         /* compute min output value */
    1737        5300 :         if (av_stream_get_end_pts(ost->st) != AV_NOPTS_VALUE)
    1738        5300 :             pts = FFMAX(pts, av_rescale_q(av_stream_get_end_pts(ost->st),
    1739             :                                           ost->st->time_base, AV_TIME_BASE_Q));
    1740        5300 :         if (is_last_report)
    1741        5300 :             nb_frames_drop += ost->last_dropped;
    1742             :     }
    1743             : 
    1744        5167 :     secs = FFABS(pts) / AV_TIME_BASE;
    1745        5167 :     us = FFABS(pts) % AV_TIME_BASE;
    1746        5167 :     mins = secs / 60;
    1747        5167 :     secs %= 60;
    1748        5167 :     hours = mins / 60;
    1749        5167 :     mins %= 60;
    1750             : 
    1751        5167 :     bitrate = pts && total_size >= 0 ? total_size * 8 / (pts / 1000.0) : -1;
    1752        5167 :     speed = t != 0.0 ? (double)pts / AV_TIME_BASE / t : -1;
    1753             : 
    1754        5167 :     if (total_size < 0) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
    1755             :                                  "size=N/A time=");
    1756        5126 :     else                snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
    1757             :                                  "size=%8.0fkB time=", total_size / 1024.0);
    1758        5167 :     if (pts < 0)
    1759           1 :         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "-");
    1760        5167 :     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
    1761             :              "%02d:%02d:%02d.%02d ", hours, mins, secs,
    1762        5167 :              (100 * us) / AV_TIME_BASE);
    1763             : 
    1764        5167 :     if (bitrate < 0) {
    1765          51 :         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),"bitrate=N/A");
    1766          51 :         av_bprintf(&buf_script, "bitrate=N/A\n");
    1767             :     }else{
    1768        5116 :         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),"bitrate=%6.1fkbits/s", bitrate);
    1769        5116 :         av_bprintf(&buf_script, "bitrate=%6.1fkbits/s\n", bitrate);
    1770             :     }
    1771             : 
    1772        5167 :     if (total_size < 0) av_bprintf(&buf_script, "total_size=N/A\n");
    1773        5126 :     else                av_bprintf(&buf_script, "total_size=%"PRId64"\n", total_size);
    1774        5167 :     av_bprintf(&buf_script, "out_time_ms=%"PRId64"\n", pts);
    1775        5167 :     av_bprintf(&buf_script, "out_time=%02d:%02d:%02d.%06d\n",
    1776             :                hours, mins, secs, us);
    1777             : 
    1778        5167 :     if (nb_frames_dup || nb_frames_drop)
    1779          27 :         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
    1780             :                 nb_frames_dup, nb_frames_drop);
    1781        5167 :     av_bprintf(&buf_script, "dup_frames=%d\n", nb_frames_dup);
    1782        5167 :     av_bprintf(&buf_script, "drop_frames=%d\n", nb_frames_drop);
    1783             : 
    1784        5167 :     if (speed < 0) {
    1785           1 :         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf)," speed=N/A");
    1786           1 :         av_bprintf(&buf_script, "speed=N/A\n");
    1787             :     } else {
    1788        5166 :         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf)," speed=%4.3gx", speed);
    1789        5166 :         av_bprintf(&buf_script, "speed=%4.3gx\n", speed);
    1790             :     }
    1791             : 
    1792        5167 :     if (print_stats || is_last_report) {
    1793        5167 :         const char end = is_last_report ? '\n' : '\r';
    1794        5167 :         if (print_stats==1 && AV_LOG_INFO > av_log_get_level()) {
    1795           0 :             fprintf(stderr, "%s    %c", buf, end);
    1796             :         } else
    1797        5167 :             av_log(NULL, AV_LOG_INFO, "%s    %c", buf, end);
    1798             : 
    1799        5167 :     fflush(stderr);
    1800             :     }
    1801             : 
    1802        5167 :     if (progress_avio) {
    1803           0 :         av_bprintf(&buf_script, "progress=%s\n",
    1804             :                    is_last_report ? "end" : "continue");
    1805           0 :         avio_write(progress_avio, buf_script.str,
    1806           0 :                    FFMIN(buf_script.len, buf_script.size - 1));
    1807           0 :         avio_flush(progress_avio);
    1808           0 :         av_bprint_finalize(&buf_script, NULL);
    1809           0 :         if (is_last_report) {
    1810           0 :             if ((ret = avio_closep(&progress_avio)) < 0)
    1811           0 :                 av_log(NULL, AV_LOG_ERROR,
    1812           0 :                        "Error closing progress log, loss of information possible: %s\n", av_err2str(ret));
    1813             :         }
    1814             :     }
    1815             : 
    1816        5167 :     if (is_last_report)
    1817        5167 :         print_final_stats(total_size);
    1818             : }
    1819             : 
    1820        5167 : static void flush_encoders(void)
    1821             : {
    1822             :     int i, ret;
    1823             : 
    1824       10467 :     for (i = 0; i < nb_output_streams; i++) {
    1825        5300 :         OutputStream   *ost = output_streams[i];
    1826        5300 :         AVCodecContext *enc = ost->enc_ctx;
    1827        5300 :         OutputFile      *of = output_files[ost->file_index];
    1828             : 
    1829        5300 :         if (!ost->encoding_needed)
    1830         177 :             continue;
    1831             : 
    1832             :         // Try to enable encoding with no input frames.
    1833             :         // Maybe we should just let encoding fail instead.
    1834        5123 :         if (!ost->initialized) {
    1835           0 :             FilterGraph *fg = ost->filter->graph;
    1836           0 :             char error[1024] = "";
    1837             : 
    1838           0 :             av_log(NULL, AV_LOG_WARNING,
    1839             :                    "Finishing stream %d:%d without any data written to it.\n",
    1840           0 :                    ost->file_index, ost->st->index);
    1841             : 
    1842           0 :             if (ost->filter && !fg->graph) {
    1843             :                 int x;
    1844           0 :                 for (x = 0; x < fg->nb_inputs; x++) {
    1845           0 :                     InputFilter *ifilter = fg->inputs[x];
    1846           0 :                     if (ifilter->format < 0) {
    1847           0 :                         AVCodecParameters *par = ifilter->ist->st->codecpar;
    1848             :                         // We never got any input. Set a fake format, which will
    1849             :                         // come from libavformat.
    1850           0 :                         ifilter->format                 = par->format;
    1851           0 :                         ifilter->sample_rate            = par->sample_rate;
    1852           0 :                         ifilter->channels               = par->channels;
    1853           0 :                         ifilter->channel_layout         = par->channel_layout;
    1854           0 :                         ifilter->width                  = par->width;
    1855           0 :                         ifilter->height                 = par->height;
    1856           0 :                         ifilter->sample_aspect_ratio    = par->sample_aspect_ratio;
    1857             :                     }
    1858             :                 }
    1859             : 
    1860           0 :                 if (!ifilter_has_all_input_formats(fg))
    1861           0 :                     continue;
    1862             : 
    1863           0 :                 ret = configure_filtergraph(fg);
    1864           0 :                 if (ret < 0) {
    1865           0 :                     av_log(NULL, AV_LOG_ERROR, "Error configuring filter graph\n");
    1866           0 :                     exit_program(1);
    1867             :                 }
    1868             : 
    1869           0 :                 finish_output_stream(ost);
    1870             :             }
    1871             : 
    1872           0 :             ret = init_output_stream(ost, error, sizeof(error));
    1873           0 :             if (ret < 0) {
    1874           0 :                 av_log(NULL, AV_LOG_ERROR, "Error initializing output stream %d:%d -- %s\n",
    1875             :                        ost->file_index, ost->index, error);
    1876           0 :                 exit_program(1);
    1877             :             }
    1878             :         }
    1879             : 
    1880        5123 :         if (enc->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
    1881         967 :             continue;
    1882             : #if FF_API_LAVF_FMT_RAWPICTURE
    1883        4156 :         if (enc->codec_type == AVMEDIA_TYPE_VIDEO && (of->ctx->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == AV_CODEC_ID_RAWVIDEO)
    1884           0 :             continue;
    1885             : #endif
    1886             : 
    1887        4156 :         if (enc->codec_type != AVMEDIA_TYPE_VIDEO && enc->codec_type != AVMEDIA_TYPE_AUDIO)
    1888          28 :             continue;
    1889             : 
    1890         227 :         for (;;) {
    1891        4355 :             const char *desc = NULL;
    1892             :             AVPacket pkt;
    1893             :             int pkt_size;
    1894             : 
    1895        4355 :             switch (enc->codec_type) {
    1896             :             case AVMEDIA_TYPE_AUDIO:
    1897         125 :                 desc   = "audio";
    1898         125 :                 break;
    1899             :             case AVMEDIA_TYPE_VIDEO:
    1900        4230 :                 desc   = "video";
    1901        4230 :                 break;
    1902             :             default:
    1903           0 :                 av_assert0(0);
    1904             :             }
    1905             : 
    1906        4355 :                 av_init_packet(&pkt);
    1907        4355 :                 pkt.data = NULL;
    1908        4355 :                 pkt.size = 0;
    1909             : 
    1910        4355 :                 update_benchmark(NULL);
    1911             : 
    1912        4355 :                 while ((ret = avcodec_receive_packet(enc, &pkt)) == AVERROR(EAGAIN)) {
    1913        4128 :                     ret = avcodec_send_frame(enc, NULL);
    1914        4128 :                     if (ret < 0) {
    1915           0 :                         av_log(NULL, AV_LOG_FATAL, "%s encoding failed: %s\n",
    1916             :                                desc,
    1917           0 :                                av_err2str(ret));
    1918           0 :                         exit_program(1);
    1919             :                     }
    1920             :                 }
    1921             : 
    1922        4355 :                 update_benchmark("flush_%s %d.%d", desc, ost->file_index, ost->index);
    1923        4355 :                 if (ret < 0 && ret != AVERROR_EOF) {
    1924           0 :                     av_log(NULL, AV_LOG_FATAL, "%s encoding failed: %s\n",
    1925             :                            desc,
    1926           0 :                            av_err2str(ret));
    1927           0 :                     exit_program(1);
    1928             :                 }
    1929        4355 :                 if (ost->logfile && enc->stats_out) {
    1930           0 :                     fprintf(ost->logfile, "%s", enc->stats_out);
    1931             :                 }
    1932        4355 :                 if (ret == AVERROR_EOF) {
    1933        4128 :                     break;
    1934             :                 }
    1935         227 :                 if (ost->finished & MUXER_FINISHED) {
    1936           0 :                     av_packet_unref(&pkt);
    1937           0 :                     continue;
    1938             :                 }
    1939         227 :                 av_packet_rescale_ts(&pkt, enc->time_base, ost->mux_timebase);
    1940         227 :                 pkt_size = pkt.size;
    1941         227 :                 output_packet(of, &pkt, ost);
    1942         227 :                 if (ost->enc_ctx->codec_type == AVMEDIA_TYPE_VIDEO && vstats_filename) {
    1943           0 :                     do_video_stats(ost, pkt_size);
    1944             :                 }
    1945             :         }
    1946             :     }
    1947        5167 : }
    1948             : 
    1949             : /*
    1950             :  * Check whether a packet from ist should be written into ost at this time
    1951             :  */
    1952      389811 : static int check_output_constraints(InputStream *ist, OutputStream *ost)
    1953             : {
    1954      389811 :     OutputFile *of = output_files[ost->file_index];
    1955      389811 :     int ist_index  = input_files[ist->file_index]->ist_index + ist->st->index;
    1956             : 
    1957      389811 :     if (ost->source_index != ist_index)
    1958       15755 :         return 0;
    1959             : 
    1960      374056 :     if (ost->finished)
    1961          24 :         return 0;
    1962             : 
    1963      374032 :     if (of->start_time != AV_NOPTS_VALUE && ist->pts < of->start_time)
    1964           0 :         return 0;
    1965             : 
    1966      374032 :     return 1;
    1967             : }
    1968             : 
    1969       19961 : static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
    1970             : {
    1971       19961 :     OutputFile *of = output_files[ost->file_index];
    1972       19961 :     InputFile   *f = input_files [ist->file_index];
    1973       19961 :     int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time;
    1974       19961 :     int64_t ost_tb_start_time = av_rescale_q(start_time, AV_TIME_BASE_Q, ost->mux_timebase);
    1975             :     AVPicture pict;
    1976             :     AVPacket opkt;
    1977             : 
    1978       19961 :     av_init_packet(&opkt);
    1979             : 
    1980       19972 :     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
    1981          11 :         !ost->copy_initial_nonkeyframes)
    1982          29 :         return;
    1983             : 
    1984       19950 :     if (!ost->frame_number && !ost->copy_prior_start) {
    1985           0 :         int64_t comp_start = start_time;
    1986           0 :         if (copy_ts && f->start_time != AV_NOPTS_VALUE)
    1987           0 :             comp_start = FFMAX(start_time, f->start_time + f->ts_offset);
    1988           0 :         if (pkt->pts == AV_NOPTS_VALUE ?
    1989           0 :             ist->pts < comp_start :
    1990           0 :             pkt->pts < av_rescale_q(comp_start, AV_TIME_BASE_Q, ist->st->time_base))
    1991           0 :             return;
    1992             :     }
    1993             : 
    1994       20366 :     if (of->recording_time != INT64_MAX &&
    1995         416 :         ist->pts >= of->recording_time + start_time) {
    1996           5 :         close_output_stream(ost);
    1997           5 :         return;
    1998             :     }
    1999             : 
    2000       19945 :     if (f->recording_time != INT64_MAX) {
    2001         148 :         start_time = f->ctx->start_time;
    2002         148 :         if (f->start_time != AV_NOPTS_VALUE && copy_ts)
    2003          74 :             start_time += f->start_time;
    2004         148 :         if (ist->pts >= f->recording_time + start_time) {
    2005           2 :             close_output_stream(ost);
    2006           2 :             return;
    2007             :         }
    2008             :     }
    2009             : 
    2010             :     /* force the input stream PTS */
    2011       19943 :     if (ost->enc_ctx->codec_type == AVMEDIA_TYPE_VIDEO)
    2012        3587 :         ost->sync_opts++;
    2013             : 
    2014       19943 :     if (pkt->pts != AV_NOPTS_VALUE)
    2015       19414 :         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->mux_timebase) - ost_tb_start_time;
    2016             :     else
    2017         529 :         opkt.pts = AV_NOPTS_VALUE;
    2018             : 
    2019       19943 :     if (pkt->dts == AV_NOPTS_VALUE)
    2020         285 :         opkt.dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ost->mux_timebase);
    2021             :     else
    2022       19658 :         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->mux_timebase);
    2023       19943 :     opkt.dts -= ost_tb_start_time;
    2024             : 
    2025       19943 :     if (ost->st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO && pkt->dts != AV_NOPTS_VALUE) {
    2026       15836 :         int duration = av_get_audio_frame_duration(ist->dec_ctx, pkt->size);
    2027       15836 :         if(!duration)
    2028        4776 :             duration = ist->dec_ctx->frame_size;
    2029       47508 :         opkt.dts = opkt.pts = av_rescale_delta(ist->st->time_base, pkt->dts,
    2030       15836 :                                                (AVRational){1, ist->dec_ctx->sample_rate}, duration, &ist->filter_in_rescale_delta_last,
    2031       15836 :                                                ost->mux_timebase) - ost_tb_start_time;
    2032             :     }
    2033             : 
    2034       19943 :     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->mux_timebase);
    2035             : 
    2036       19943 :     opkt.flags    = pkt->flags;
    2037             :     // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
    2038       19943 :     if (  ost->st->codecpar->codec_id != AV_CODEC_ID_H264
    2039       18404 :        && ost->st->codecpar->codec_id != AV_CODEC_ID_MPEG1VIDEO
    2040       18404 :        && ost->st->codecpar->codec_id != AV_CODEC_ID_MPEG2VIDEO
    2041       18310 :        && ost->st->codecpar->codec_id != AV_CODEC_ID_VC1
    2042       18310 :        ) {
    2043       36620 :         int ret = av_parser_change(ost->parser, ost->parser_avctx,
    2044             :                              &opkt.data, &opkt.size,
    2045       18310 :                              pkt->data, pkt->size,
    2046       18310 :                              pkt->flags & AV_PKT_FLAG_KEY);
    2047       18310 :         if (ret < 0) {
    2048           0 :             av_log(NULL, AV_LOG_FATAL, "av_parser_change failed: %s\n",
    2049           0 :                    av_err2str(ret));
    2050           0 :             exit_program(1);
    2051             :         }
    2052       18310 :         if (ret) {
    2053           0 :             opkt.buf = av_buffer_create(opkt.data, opkt.size, av_buffer_default_free, NULL, 0);
    2054           0 :             if (!opkt.buf)
    2055           0 :                 exit_program(1);
    2056             :         }
    2057             :     } else {
    2058        1633 :         opkt.data = pkt->data;
    2059        1633 :         opkt.size = pkt->size;
    2060             :     }
    2061       19943 :     av_copy_packet_side_data(&opkt, pkt);
    2062             : 
    2063             : #if FF_API_LAVF_FMT_RAWPICTURE
    2064       23530 :     if (ost->st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
    2065        3631 :         ost->st->codecpar->codec_id == AV_CODEC_ID_RAWVIDEO &&
    2066          44 :         (of->ctx->oformat->flags & AVFMT_RAWPICTURE)) {
    2067             :         /* store AVPicture in AVPacket, as expected by the output format */
    2068           0 :         int ret = avpicture_fill(&pict, opkt.data, ost->st->codecpar->format, ost->st->codecpar->width, ost->st->codecpar->height);
    2069           0 :         if (ret < 0) {
    2070           0 :             av_log(NULL, AV_LOG_FATAL, "avpicture_fill failed: %s\n",
    2071           0 :                    av_err2str(ret));
    2072           0 :             exit_program(1);
    2073             :         }
    2074           0 :         opkt.data = (uint8_t *)&pict;
    2075           0 :         opkt.size = sizeof(AVPicture);
    2076           0 :         opkt.flags |= AV_PKT_FLAG_KEY;
    2077             :     }
    2078             : #endif
    2079             : 
    2080       19943 :     output_packet(of, &opkt, ost);
    2081             : }
    2082             : 
    2083        1275 : int guess_input_channel_layout(InputStream *ist)
    2084             : {
    2085        1275 :     AVCodecContext *dec = ist->dec_ctx;
    2086             : 
    2087        1275 :     if (!dec->channel_layout) {
    2088             :         char layout_name[256];
    2089             : 
    2090         718 :         if (dec->channels > ist->guess_layout_max)
    2091           4 :             return 0;
    2092         716 :         dec->channel_layout = av_get_default_channel_layout(dec->channels);
    2093         716 :         if (!dec->channel_layout)
    2094           0 :             return 0;
    2095         716 :         av_get_channel_layout_string(layout_name, sizeof(layout_name),
    2096             :                                      dec->channels, dec->channel_layout);
    2097         716 :         av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for Input Stream "
    2098         716 :                "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
    2099             :     }
    2100        1273 :     return 1;
    2101             : }
    2102             : 
    2103      731847 : static void check_decode_result(InputStream *ist, int *got_output, int ret)
    2104             : {
    2105      731847 :     if (*got_output || ret<0)
    2106      377906 :         decode_error_stat[ret<0] ++;
    2107             : 
    2108      731847 :     if (ret < 0 && exit_on_error)
    2109           0 :         exit_program(1);
    2110             : 
    2111      731847 :     if (exit_on_error && *got_output && ist) {
    2112           0 :         if (ist->decoded_frame->decode_error_flags || (ist->decoded_frame->flags & AV_FRAME_FLAG_CORRUPT)) {
    2113           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);
    2114           0 :             exit_program(1);
    2115             :         }
    2116             :     }
    2117      731847 : }
    2118             : 
    2119             : // Filters can be configured only if the formats of all inputs are known.
    2120     2235014 : static int ifilter_has_all_input_formats(FilterGraph *fg)
    2121             : {
    2122             :     int i;
    2123     2272142 :     for (i = 0; i < fg->nb_inputs; i++) {
    2124     4496833 :         if (fg->inputs[i]->format < 0 && (fg->inputs[i]->type == AVMEDIA_TYPE_AUDIO ||
    2125     2229842 :                                           fg->inputs[i]->type == AVMEDIA_TYPE_VIDEO))
    2126     2229863 :             return 0;
    2127             :     }
    2128        5151 :     return 1;
    2129             : }
    2130             : 
    2131      377327 : static int ifilter_send_frame(InputFilter *ifilter, AVFrame *frame)
    2132             : {
    2133      377327 :     FilterGraph *fg = ifilter->graph;
    2134             :     int need_reinit, ret, i;
    2135             : 
    2136             :     /* determine if the parameters for this input changed */
    2137      377327 :     need_reinit = ifilter->format != frame->format;
    2138      754654 :     if (!!ifilter->hw_frames_ctx != !!frame->hw_frames_ctx ||
    2139      377327 :         (ifilter->hw_frames_ctx && ifilter->hw_frames_ctx->data != frame->hw_frames_ctx->data))
    2140           0 :         need_reinit = 1;
    2141             : 
    2142      377327 :     switch (ifilter->ist->st->codecpar->codec_type) {
    2143             :     case AVMEDIA_TYPE_AUDIO:
    2144      847450 :         need_reinit |= ifilter->sample_rate    != frame->sample_rate ||
    2145      564613 :                        ifilter->channels       != frame->channels ||
    2146      281777 :                        ifilter->channel_layout != frame->channel_layout;
    2147      282836 :         break;
    2148             :     case AVMEDIA_TYPE_VIDEO:
    2149      184914 :         need_reinit |= ifilter->width  != frame->width ||
    2150       90423 :                        ifilter->height != frame->height;
    2151       94491 :         break;
    2152             :     }
    2153             : 
    2154      377327 :     if (need_reinit) {
    2155        5140 :         ret = ifilter_parameters_from_frame(ifilter, frame);
    2156        5140 :         if (ret < 0)
    2157           0 :             return ret;
    2158             :     }
    2159             : 
    2160             :     /* (re)init the graph if possible, otherwise buffer the frame and return */
    2161      377327 :     if (need_reinit || !fg->graph) {
    2162       10282 :         for (i = 0; i < fg->nb_inputs; i++) {
    2163        5161 :             if (!ifilter_has_all_input_formats(fg)) {
    2164          19 :                 AVFrame *tmp = av_frame_clone(frame);
    2165          19 :                 if (!tmp)
    2166           0 :                     return AVERROR(ENOMEM);
    2167          19 :                 av_frame_unref(frame);
    2168             : 
    2169          19 :                 if (!av_fifo_space(ifilter->frame_queue)) {
    2170           0 :                     ret = av_fifo_realloc2(ifilter->frame_queue, 2 * av_fifo_size(ifilter->frame_queue));
    2171           0 :                     if (ret < 0) {
    2172           0 :                         av_frame_free(&tmp);
    2173           0 :                         return ret;
    2174             :                     }
    2175             :                 }
    2176          19 :                 av_fifo_generic_write(ifilter->frame_queue, &tmp, sizeof(tmp), NULL);
    2177          19 :                 return 0;
    2178             :             }
    2179             :         }
    2180             : 
    2181        5121 :         ret = reap_filters(1);
    2182        5121 :         if (ret < 0 && ret != AVERROR_EOF) {
    2183             :             char errbuf[128];
    2184           0 :             av_strerror(ret, errbuf, sizeof(errbuf));
    2185             : 
    2186           0 :             av_log(NULL, AV_LOG_ERROR, "Error while filtering: %s\n", errbuf);
    2187           0 :             return ret;
    2188             :         }
    2189             : 
    2190        5121 :         ret = configure_filtergraph(fg);
    2191        5121 :         if (ret < 0) {
    2192           0 :             av_log(NULL, AV_LOG_ERROR, "Error reinitializing filters!\n");
    2193           0 :             return ret;
    2194             :         }
    2195             :     }
    2196             : 
    2197      377308 :     ret = av_buffersrc_add_frame_flags(ifilter->filter, frame, AV_BUFFERSRC_FLAG_PUSH);
    2198      377308 :     if (ret < 0) {
    2199           0 :         if (ret != AVERROR_EOF)
    2200           0 :             av_log(NULL, AV_LOG_ERROR, "Error while filtering: %s\n", av_err2str(ret));
    2201           0 :         return ret;
    2202             :     }
    2203             : 
    2204      377308 :     return 0;
    2205             : }
    2206             : 
    2207        5094 : static int ifilter_send_eof(InputFilter *ifilter)
    2208             : {
    2209             :     int i, j, ret;
    2210             : 
    2211        5094 :     ifilter->eof = 1;
    2212             : 
    2213        5094 :     if (ifilter->filter) {
    2214        5094 :         ret = av_buffersrc_add_frame_flags(ifilter->filter, NULL, AV_BUFFERSRC_FLAG_PUSH);
    2215        5094 :         if (ret < 0)
    2216           0 :             return ret;
    2217             :     } else {
    2218             :         // the filtergraph was never configured
    2219           0 :         FilterGraph *fg = ifilter->graph;
    2220           0 :         for (i = 0; i < fg->nb_inputs; i++)
    2221           0 :             if (!fg->inputs[i]->eof)
    2222           0 :                 break;
    2223           0 :         if (i == fg->nb_inputs) {
    2224             :             // All the input streams have finished without the filtergraph
    2225             :             // ever being configured.
    2226             :             // Mark the output streams as finished.
    2227           0 :             for (j = 0; j < fg->nb_outputs; j++)
    2228           0 :                 finish_output_stream(fg->outputs[j]->ost);
    2229             :         }
    2230             :     }
    2231             : 
    2232        5094 :     return 0;
    2233             : }
    2234             : 
    2235             : // This does not quite work like avcodec_decode_audio4/avcodec_decode_video2.
    2236             : // There is the following difference: if you got a frame, you must call
    2237             : // it again with pkt=NULL. pkt==NULL is treated differently from pkt.size==0
    2238             : // (pkt==NULL means get more output, pkt.size==0 is a flush/drain packet)
    2239      735985 : static int decode(AVCodecContext *avctx, AVFrame *frame, int *got_frame, AVPacket *pkt)
    2240             : {
    2241             :     int ret;
    2242             : 
    2243      735985 :     *got_frame = 0;
    2244             : 
    2245      735985 :     if (pkt) {
    2246      359643 :         ret = avcodec_send_packet(avctx, pkt);
    2247             :         // In particular, we don't expect AVERROR(EAGAIN), because we read all
    2248             :         // decoded frames with avcodec_receive_frame() until done.
    2249      359643 :         if (ret < 0 && ret != AVERROR_EOF)
    2250         379 :             return ret;
    2251             :     }
    2252             : 
    2253      735606 :     ret = avcodec_receive_frame(avctx, frame);
    2254      735606 :     if (ret < 0 && ret != AVERROR(EAGAIN))
    2255        5096 :         return ret;
    2256      730510 :     if (ret >= 0)
    2257      376939 :         *got_frame = 1;
    2258             : 
    2259      730510 :     return 0;
    2260             : }
    2261             : 
    2262      376939 : static int send_frame_to_filters(InputStream *ist, AVFrame *decoded_frame)
    2263             : {
    2264             :     int i, ret;
    2265             :     AVFrame *f;
    2266             : 
    2267             :     av_assert1(ist->nb_filters > 0); /* ensure ret is initialized */
    2268      754266 :     for (i = 0; i < ist->nb_filters; i++) {
    2269      377327 :         if (i < ist->nb_filters - 1) {
    2270         388 :             f = ist->filter_frame;
    2271         388 :             ret = av_frame_ref(f, decoded_frame);
    2272         388 :             if (ret < 0)
    2273           0 :                 break;
    2274             :         } else
    2275      376939 :             f = decoded_frame;
    2276      377327 :         ret = ifilter_send_frame(ist->filters[i], f);
    2277      377327 :         if (ret == AVERROR_EOF)
    2278           0 :             ret = 0; /* ignore */
    2279      377327 :         if (ret < 0) {
    2280           0 :             av_log(NULL, AV_LOG_ERROR,
    2281           0 :                    "Failed to inject frame into filter network: %s\n", av_err2str(ret));
    2282           0 :             break;
    2283             :         }
    2284             :     }
    2285      376939 :     return ret;
    2286             : }
    2287             : 
    2288      539175 : static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output,
    2289             :                         int *decode_failed)
    2290             : {
    2291             :     AVFrame *decoded_frame;
    2292      539175 :     AVCodecContext *avctx = ist->dec_ctx;
    2293      539175 :     int ret, err = 0;
    2294             :     AVRational decoded_frame_tb;
    2295             : 
    2296      539175 :     if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
    2297           0 :         return AVERROR(ENOMEM);
    2298      539175 :     if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
    2299           0 :         return AVERROR(ENOMEM);
    2300      539175 :     decoded_frame = ist->decoded_frame;
    2301             : 
    2302      539175 :     update_benchmark(NULL);
    2303      539175 :     ret = decode(avctx, decoded_frame, got_output, pkt);
    2304      539175 :     update_benchmark("decode_audio %d.%d", ist->file_index, ist->st->index);
    2305      539175 :     if (ret < 0)
    2306        1066 :         *decode_failed = 1;
    2307             : 
    2308      539175 :     if (ret >= 0 && avctx->sample_rate <= 0) {
    2309           0 :         av_log(avctx, AV_LOG_ERROR, "Sample rate %d invalid\n", avctx->sample_rate);
    2310           0 :         ret = AVERROR_INVALIDDATA;
    2311             :     }
    2312             : 
    2313      539175 :     if (ret != AVERROR_EOF)
    2314      538119 :         check_decode_result(ist, got_output, ret);
    2315             : 
    2316      539175 :     if (!*got_output || ret < 0)
    2317      256727 :         return ret;
    2318             : 
    2319      282448 :     ist->samples_decoded += decoded_frame->nb_samples;
    2320      282448 :     ist->frames_decoded++;
    2321             : 
    2322             : #if 1
    2323             :     /* increment next_dts to use for the case where the input stream does not
    2324             :        have timestamps or there are multiple frames in the packet */
    2325      564896 :     ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
    2326      282448 :                      avctx->sample_rate;
    2327      564896 :     ist->next_dts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
    2328      282448 :                      avctx->sample_rate;
    2329             : #endif
    2330             : 
    2331      282448 :     if (decoded_frame->pts != AV_NOPTS_VALUE) {
    2332      254544 :         decoded_frame_tb   = ist->st->time_base;
    2333       27904 :     } else if (pkt && pkt->pts != AV_NOPTS_VALUE) {
    2334           3 :         decoded_frame->pts = pkt->pts;
    2335           3 :         decoded_frame_tb   = ist->st->time_base;
    2336             :     }else {
    2337       27901 :         decoded_frame->pts = ist->dts;
    2338       27901 :         decoded_frame_tb   = AV_TIME_BASE_Q;
    2339             :     }
    2340      282448 :     if (decoded_frame->pts != AV_NOPTS_VALUE)
    2341      564896 :         decoded_frame->pts = av_rescale_delta(decoded_frame_tb, decoded_frame->pts,
    2342      282448 :                                               (AVRational){1, avctx->sample_rate}, decoded_frame->nb_samples, &ist->filter_in_rescale_delta_last,
    2343      282448 :                                               (AVRational){1, avctx->sample_rate});
    2344      282448 :     ist->nb_samples = decoded_frame->nb_samples;
    2345      282448 :     err = send_frame_to_filters(ist, decoded_frame);
    2346             : 
    2347      282448 :     av_frame_unref(ist->filter_frame);
    2348      282448 :     av_frame_unref(decoded_frame);
    2349      282448 :     return err < 0 ? err : ret;
    2350             : }
    2351             : 
    2352      198355 : static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output, int eof,
    2353             :                         int *decode_failed)
    2354             : {
    2355             :     AVFrame *decoded_frame;
    2356      198355 :     int i, ret = 0, err = 0;
    2357             :     int64_t best_effort_timestamp;
    2358      198355 :     int64_t dts = AV_NOPTS_VALUE;
    2359             :     AVPacket avpkt;
    2360             : 
    2361             :     // With fate-indeo3-2, we're getting 0-sized packets before EOF for some
    2362             :     // reason. This seems like a semi-critical bug. Don't trigger EOF, and
    2363             :     // skip the packet.
    2364      198355 :     if (!eof && pkt && pkt->size == 0)
    2365        1545 :         return 0;
    2366             : 
    2367      196810 :     if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
    2368           0 :         return AVERROR(ENOMEM);
    2369      196810 :     if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
    2370           0 :         return AVERROR(ENOMEM);
    2371      196810 :     decoded_frame = ist->decoded_frame;
    2372      196810 :     if (ist->dts != AV_NOPTS_VALUE)
    2373      196397 :         dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
    2374      196810 :     if (pkt) {
    2375      102889 :         avpkt = *pkt;
    2376      102889 :         avpkt.dts = dts; // ffmpeg.c probably shouldn't do this
    2377             :     }
    2378             : 
    2379             :     // The old code used to set dts on the drain packet, which does not work
    2380             :     // with the new API anymore.
    2381      196810 :     if (eof) {
    2382        4605 :         void *new = av_realloc_array(ist->dts_buffer, ist->nb_dts_buffer + 1, sizeof(ist->dts_buffer[0]));
    2383        4605 :         if (!new)
    2384           0 :             return AVERROR(ENOMEM);
    2385        4605 :         ist->dts_buffer = new;
    2386        4605 :         ist->dts_buffer[ist->nb_dts_buffer++] = dts;
    2387             :     }
    2388             : 
    2389      196810 :     update_benchmark(NULL);
    2390      196810 :     ret = decode(ist->dec_ctx, decoded_frame, got_output, pkt ? &avpkt : NULL);
    2391      196810 :     update_benchmark("decode_video %d.%d", ist->file_index, ist->st->index);
    2392      196810 :     if (ret < 0)
    2393        4409 :         *decode_failed = 1;
    2394             : 
    2395             :     // The following line may be required in some cases where there is no parser
    2396             :     // or the parser does not has_b_frames correctly
    2397      196810 :     if (ist->st->codecpar->video_delay < ist->dec_ctx->has_b_frames) {
    2398           2 :         if (ist->dec_ctx->codec_id == AV_CODEC_ID_H264) {
    2399           2 :             ist->st->codecpar->video_delay = ist->dec_ctx->has_b_frames;
    2400             :         } else
    2401           0 :             av_log(ist->dec_ctx, AV_LOG_WARNING,
    2402             :                    "video_delay is larger in decoder than demuxer %d > %d.\n"
    2403             :                    "If you want to help, upload a sample "
    2404             :                    "of this file to ftp://upload.ffmpeg.org/incoming/ "
    2405             :                    "and contact the ffmpeg-devel mailing list. (ffmpeg-devel@ffmpeg.org)\n",
    2406           0 :                    ist->dec_ctx->has_b_frames,
    2407           0 :                    ist->st->codecpar->video_delay);
    2408             :     }
    2409             : 
    2410      196810 :     if (ret != AVERROR_EOF)
    2411      192775 :         check_decode_result(ist, got_output, ret);
    2412             : 
    2413      196810 :     if (*got_output && ret >= 0) {
    2414      188973 :         if (ist->dec_ctx->width  != decoded_frame->width ||
    2415      188962 :             ist->dec_ctx->height != decoded_frame->height ||
    2416       94480 :             ist->dec_ctx->pix_fmt != decoded_frame->format) {
    2417          30 :             av_log(NULL, AV_LOG_DEBUG, "Frame parameters mismatch context %d,%d,%d != %d,%d,%d\n",
    2418             :                 decoded_frame->width,
    2419             :                 decoded_frame->height,
    2420             :                 decoded_frame->format,
    2421          15 :                 ist->dec_ctx->width,
    2422          15 :                 ist->dec_ctx->height,
    2423          15 :                 ist->dec_ctx->pix_fmt);
    2424             :         }
    2425             :     }
    2426             : 
    2427      196810 :     if (!*got_output || ret < 0)
    2428      102319 :         return ret;
    2429             : 
    2430       94491 :     if(ist->top_field_first>=0)
    2431           0 :         decoded_frame->top_field_first = ist->top_field_first;
    2432             : 
    2433       94491 :     ist->frames_decoded++;
    2434             : 
    2435       94491 :     if (ist->hwaccel_retrieve_data && decoded_frame->format == ist->hwaccel_pix_fmt) {
    2436           0 :         err = ist->hwaccel_retrieve_data(ist->dec_ctx, decoded_frame);
    2437           0 :         if (err < 0)
    2438           0 :             goto fail;
    2439             :     }
    2440       94491 :     ist->hwaccel_retrieved_pix_fmt = decoded_frame->format;
    2441             : 
    2442       94491 :     best_effort_timestamp= decoded_frame->best_effort_timestamp;
    2443             : 
    2444       94491 :     if (ist->framerate.num)
    2445         103 :         best_effort_timestamp = ist->cfr_next_pts++;
    2446             : 
    2447       94491 :     if (eof && best_effort_timestamp == AV_NOPTS_VALUE && ist->nb_dts_buffer > 0) {
    2448         519 :         best_effort_timestamp = ist->dts_buffer[0];
    2449             : 
    2450         519 :         for (i = 0; i < ist->nb_dts_buffer - 1; i++)
    2451           0 :             ist->dts_buffer[i] = ist->dts_buffer[i + 1];
    2452         519 :         ist->nb_dts_buffer--;
    2453             :     }
    2454             : 
    2455       94491 :     if(best_effort_timestamp != AV_NOPTS_VALUE) {
    2456       94491 :         int64_t ts = av_rescale_q(decoded_frame->pts = best_effort_timestamp, ist->st->time_base, AV_TIME_BASE_Q);
    2457             : 
    2458       94491 :         if (ts != AV_NOPTS_VALUE)
    2459       94491 :             ist->next_pts = ist->pts = ts;
    2460             :     }
    2461             : 
    2462       94491 :     if (debug_ts) {
    2463           0 :         av_log(NULL, AV_LOG_INFO, "decoder -> ist_index:%d type:video "
    2464             :                "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",
    2465           0 :                ist->st->index, av_ts2str(decoded_frame->pts),
    2466           0 :                av_ts2timestr(decoded_frame->pts, &ist->st->time_base),
    2467             :                best_effort_timestamp,
    2468           0 :                av_ts2timestr(best_effort_timestamp, &ist->st->time_base),
    2469           0 :                decoded_frame->key_frame, decoded_frame->pict_type,
    2470           0 :                ist->st->time_base.num, ist->st->time_base.den);
    2471             :     }
    2472             : 
    2473       94491 :     if (ist->st->sample_aspect_ratio.num)
    2474        4232 :         decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
    2475             : 
    2476       94491 :     err = send_frame_to_filters(ist, decoded_frame);
    2477             : 
    2478             : fail:
    2479       94491 :     av_frame_unref(ist->filter_frame);
    2480       94491 :     av_frame_unref(decoded_frame);
    2481       94491 :     return err < 0 ? err : ret;
    2482             : }
    2483             : 
    2484         953 : static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output,
    2485             :                                int *decode_failed)
    2486             : {
    2487             :     AVSubtitle subtitle;
    2488         953 :     int free_sub = 1;
    2489         953 :     int i, ret = avcodec_decode_subtitle2(ist->dec_ctx,
    2490             :                                           &subtitle, got_output, pkt);
    2491             : 
    2492         953 :     check_decode_result(NULL, got_output, ret);
    2493             : 
    2494         953 :     if (ret < 0 || !*got_output) {
    2495         370 :         *decode_failed = 1;
    2496         370 :         if (!pkt->size)
    2497          29 :             sub2video_flush(ist);
    2498         370 :         return ret;
    2499             :     }
    2500             : 
    2501         583 :     if (ist->fix_sub_duration) {
    2502           0 :         int end = 1;
    2503           0 :         if (ist->prev_sub.got_output) {
    2504           0 :             end = av_rescale(subtitle.pts - ist->prev_sub.subtitle.pts,
    2505             :                              1000, AV_TIME_BASE);
    2506           0 :             if (end < ist->prev_sub.subtitle.end_display_time) {
    2507           0 :                 av_log(ist->dec_ctx, AV_LOG_DEBUG,
    2508             :                        "Subtitle duration reduced from %"PRId32" to %d%s\n",
    2509             :                        ist->prev_sub.subtitle.end_display_time, end,
    2510             :                        end <= 0 ? ", dropping it" : "");
    2511           0 :                 ist->prev_sub.subtitle.end_display_time = end;
    2512             :             }
    2513             :         }
    2514           0 :         FFSWAP(int,        *got_output, ist->prev_sub.got_output);
    2515           0 :         FFSWAP(int,        ret,         ist->prev_sub.ret);
    2516           0 :         FFSWAP(AVSubtitle, subtitle,    ist->prev_sub.subtitle);
    2517           0 :         if (end <= 0)
    2518           0 :             goto out;
    2519             :     }
    2520             : 
    2521         583 :     if (!*got_output)
    2522           0 :         return ret;
    2523             : 
    2524         583 :     if (ist->sub2video.frame) {
    2525          44 :         sub2video_update(ist, &subtitle);
    2526         539 :     } else if (ist->nb_filters) {
    2527           0 :         if (!ist->sub2video.sub_queue)
    2528           0 :             ist->sub2video.sub_queue = av_fifo_alloc(8 * sizeof(AVSubtitle));
    2529           0 :         if (!ist->sub2video.sub_queue)
    2530           0 :             exit_program(1);
    2531           0 :         if (!av_fifo_space(ist->sub2video.sub_queue)) {
    2532           0 :             ret = av_fifo_realloc2(ist->sub2video.sub_queue, 2 * av_fifo_size(ist->sub2video.sub_queue));
    2533           0 :             if (ret < 0)
    2534           0 :                 exit_program(1);
    2535             :         }
    2536           0 :         av_fifo_generic_write(ist->sub2video.sub_queue, &subtitle, sizeof(subtitle), NULL);
    2537           0 :         free_sub = 0;
    2538             :     }
    2539             : 
    2540         583 :     if (!subtitle.num_rects)
    2541           0 :         goto out;
    2542             : 
    2543         583 :     ist->frames_decoded++;
    2544             : 
    2545        1210 :     for (i = 0; i < nb_output_streams; i++) {
    2546         627 :         OutputStream *ost = output_streams[i];
    2547             : 
    2548         627 :         if (!check_output_constraints(ist, ost) || !ost->encoding_needed
    2549         582 :             || ost->enc->type != AVMEDIA_TYPE_SUBTITLE)
    2550          45 :             continue;
    2551             : 
    2552         582 :         do_subtitle_out(output_files[ost->file_index], ost, &subtitle);
    2553             :     }
    2554             : 
    2555             : out:
    2556         583 :     if (free_sub)
    2557         583 :         avsubtitle_free(&subtitle);
    2558         583 :     return ret;
    2559             : }
    2560             : 
    2561        5120 : static int send_filter_eof(InputStream *ist)
    2562             : {
    2563             :     int i, ret;
    2564       10214 :     for (i = 0; i < ist->nb_filters; i++) {
    2565        5094 :         ret = ifilter_send_eof(ist->filters[i]);
    2566        5094 :         if (ret < 0)
    2567           0 :             return ret;
    2568             :     }
    2569        5120 :     return 0;
    2570             : }
    2571             : 
    2572             : /* pkt = NULL means EOF (needed to flush decoder buffers) */
    2573      382125 : static int process_input_packet(InputStream *ist, const AVPacket *pkt, int no_eof)
    2574             : {
    2575      382125 :     int ret = 0, i;
    2576      382125 :     int repeating = 0;
    2577      382125 :     int eof_reached = 0;
    2578             : 
    2579             :     AVPacket avpkt;
    2580      382125 :     if (!ist->saw_first_ts) {
    2581        5287 :         ist->dts = ist->st->avg_frame_rate.num ? - ist->dec_ctx->has_b_frames * AV_TIME_BASE / av_q2d(ist->st->avg_frame_rate) : 0;
    2582        5287 :         ist->pts = 0;
    2583        5287 :         if (pkt && pkt->pts != AV_NOPTS_VALUE && !ist->decoding_needed) {
    2584         136 :             ist->dts += av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
    2585         136 :             ist->pts = ist->dts; //unused but better to set it to a value thats not totally wrong
    2586             :         }
    2587        5287 :         ist->saw_first_ts = 1;
    2588             :     }
    2589             : 
    2590      382125 :     if (ist->next_dts == AV_NOPTS_VALUE)
    2591        5700 :         ist->next_dts = ist->dts;
    2592      382125 :     if (ist->next_pts == AV_NOPTS_VALUE)
    2593        5287 :         ist->next_pts = ist->pts;
    2594             : 
    2595      382125 :     if (!pkt) {
    2596             :         /* EOF handling */
    2597        5718 :         av_init_packet(&avpkt);
    2598        5718 :         avpkt.data = NULL;
    2599        5718 :         avpkt.size = 0;
    2600             :     } else {
    2601      376407 :         avpkt = *pkt;
    2602             :     }
    2603             : 
    2604      382125 :     if (pkt && pkt->dts != AV_NOPTS_VALUE) {
    2605      345167 :         ist->next_dts = ist->dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
    2606      345167 :         if (ist->dec_ctx->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
    2607      275213 :             ist->next_pts = ist->pts = ist->dts;
    2608             :     }
    2609             : 
    2610             :     // while we have more to decode or while the decoder did output something on EOF
    2611     1141175 :     while (ist->decoding_needed) {
    2612      739066 :         int64_t duration = 0;
    2613      739066 :         int got_output = 0;
    2614      739066 :         int decode_failed = 0;
    2615             : 
    2616      739066 :         ist->pts = ist->next_pts;
    2617      739066 :         ist->dts = ist->next_dts;
    2618             : 
    2619      739066 :         switch (ist->dec_ctx->codec_type) {
    2620             :         case AVMEDIA_TYPE_AUDIO:
    2621      539175 :             ret = decode_audio    (ist, repeating ? NULL : &avpkt, &got_output,
    2622             :                                    &decode_failed);
    2623      539175 :             break;
    2624             :         case AVMEDIA_TYPE_VIDEO:
    2625      198355 :             ret = decode_video    (ist, repeating ? NULL : &avpkt, &got_output, !pkt,
    2626             :                                    &decode_failed);
    2627      198355 :             if (!repeating || !pkt || got_output) {
    2628      104434 :                 if (pkt && pkt->duration) {
    2629       97532 :                     duration = av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
    2630        6902 :                 } else if(ist->dec_ctx->framerate.num != 0 && ist->dec_ctx->framerate.den != 0) {
    2631        5720 :                     int ticks= av_stream_get_parser(ist->st) ? av_stream_get_parser(ist->st)->repeat_pict+1 : ist->dec_ctx->ticks_per_frame;
    2632       11440 :                     duration = ((int64_t)AV_TIME_BASE *
    2633       17160 :                                     ist->dec_ctx->framerate.den * ticks) /
    2634       11440 :                                     ist->dec_ctx->framerate.num / ist->dec_ctx->ticks_per_frame;
    2635             :                 }
    2636             : 
    2637      104434 :                 if(ist->dts != AV_NOPTS_VALUE && duration) {
    2638      103252 :                     ist->next_dts += duration;
    2639             :                 }else
    2640        1182 :                     ist->next_dts = AV_NOPTS_VALUE;
    2641             :             }
    2642             : 
    2643      198355 :             if (got_output)
    2644       94491 :                 ist->next_pts += duration; //FIXME the duration is not correct in some cases
    2645      198355 :             break;
    2646             :         case AVMEDIA_TYPE_SUBTITLE:
    2647        1536 :             if (repeating)
    2648         583 :                 break;
    2649         953 :             ret = transcode_subtitles(ist, &avpkt, &got_output, &decode_failed);
    2650         953 :             if (!pkt && ret >= 0)
    2651          29 :                 ret = AVERROR_EOF;
    2652         953 :             break;
    2653             :         default:
    2654           0 :             return -1;
    2655             :         }
    2656             : 
    2657      739066 :         if (ret == AVERROR_EOF) {
    2658        5120 :             eof_reached = 1;
    2659      367261 :             break;
    2660             :         }
    2661             : 
    2662      733946 :         if (ret < 0) {
    2663         384 :             if (decode_failed) {
    2664         768 :                 av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d: %s\n",
    2665         768 :                        ist->file_index, ist->st->index, av_err2str(ret));
    2666             :             } else {
    2667           0 :                 av_log(NULL, AV_LOG_FATAL, "Error while processing the decoded "
    2668           0 :                        "data for stream #%d:%d\n", ist->file_index, ist->st->index);
    2669             :             }
    2670         384 :             if (!decode_failed || exit_on_error)
    2671           0 :                 exit_program(1);
    2672         384 :             break;
    2673             :         }
    2674             : 
    2675      733562 :         if (got_output)
    2676      377522 :             ist->got_output = 1;
    2677             : 
    2678      733562 :         if (!got_output)
    2679      356040 :             break;
    2680             : 
    2681             :         // During draining, we might get multiple output frames in this loop.
    2682             :         // ffmpeg.c does not drain the filter chain on configuration changes,
    2683             :         // which means if we send multiple frames at once to the filters, and
    2684             :         // one of those frames changes configuration, the buffered frames will
    2685             :         // be lost. This can upset certain FATE tests.
    2686             :         // Decode only 1 frame per call on EOF to appease these FATE tests.
    2687             :         // The ideal solution would be to rewrite decoding to use the new
    2688             :         // decoding API in a better way.
    2689      377522 :         if (!pkt)
    2690         597 :             break;
    2691             : 
    2692      376925 :         repeating = 1;
    2693             :     }
    2694             : 
    2695             :     /* after flushing, send an EOF on all the filter inputs attached to the stream */
    2696             :     /* except when looping we need to flush but not to send an EOF */
    2697      382125 :     if (!pkt && ist->decoding_needed && eof_reached && !no_eof) {
    2698        5120 :         int ret = send_filter_eof(ist);
    2699        5120 :         if (ret < 0) {
    2700           0 :             av_log(NULL, AV_LOG_FATAL, "Error marking filters as finished\n");
    2701           0 :             exit_program(1);
    2702             :         }
    2703             :     }
    2704             : 
    2705             :     /* handle stream copy */
    2706      382125 :     if (!ist->decoding_needed) {
    2707       19984 :         ist->dts = ist->next_dts;
    2708       19984 :         switch (ist->dec_ctx->codec_type) {
    2709             :         case AVMEDIA_TYPE_AUDIO:
    2710       31728 :             ist->next_dts += ((int64_t)AV_TIME_BASE * ist->dec_ctx->frame_size) /
    2711       15864 :                              ist->dec_ctx->sample_rate;
    2712       15864 :             break;
    2713             :         case AVMEDIA_TYPE_VIDEO:
    2714        3600 :             if (ist->framerate.num) {
    2715             :                 // TODO: Remove work-around for c99-to-c89 issue 7
    2716          79 :                 AVRational time_base_q = AV_TIME_BASE_Q;
    2717          79 :                 int64_t next_dts = av_rescale_q(ist->next_dts, time_base_q, av_inv_q(ist->framerate));
    2718          79 :                 ist->next_dts = av_rescale_q(next_dts + 1, av_inv_q(ist->framerate), time_base_q);
    2719        3521 :             } else if (pkt->duration) {
    2720        3294 :                 ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
    2721         227 :             } else if(ist->dec_ctx->framerate.num != 0) {
    2722         119 :                 int ticks= av_stream_get_parser(ist->st) ? av_stream_get_parser(ist->st)->repeat_pict + 1 : ist->dec_ctx->ticks_per_frame;
    2723         357 :                 ist->next_dts += ((int64_t)AV_TIME_BASE *
    2724         357 :                                   ist->dec_ctx->framerate.den * ticks) /
    2725         238 :                                   ist->dec_ctx->framerate.num / ist->dec_ctx->ticks_per_frame;
    2726             :             }
    2727        3600 :             break;
    2728             :         }
    2729       19984 :         ist->pts = ist->dts;
    2730       19984 :         ist->next_pts = ist->next_dts;
    2731             :     }
    2732      771309 :     for (i = 0; pkt && i < nb_output_streams; i++) {
    2733      389184 :         OutputStream *ost = output_streams[i];
    2734             : 
    2735      389184 :         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
    2736      369223 :             continue;
    2737             : 
    2738       19961 :         do_streamcopy(ist, ost, pkt);
    2739             :     }
    2740             : 
    2741      382125 :     return !eof_reached;
    2742             : }
    2743             : 
    2744           0 : static void print_sdp(void)
    2745             : {
    2746             :     char sdp[16384];
    2747             :     int i;
    2748             :     int j;
    2749             :     AVIOContext *sdp_pb;
    2750             :     AVFormatContext **avc;
    2751             : 
    2752           0 :     for (i = 0; i < nb_output_files; i++) {
    2753           0 :         if (!output_files[i]->header_written)
    2754           0 :             return;
    2755             :     }
    2756             : 
    2757           0 :     avc = av_malloc_array(nb_output_files, sizeof(*avc));
    2758           0 :     if (!avc)
    2759           0 :         exit_program(1);
    2760           0 :     for (i = 0, j = 0; i < nb_output_files; i++) {
    2761           0 :         if (!strcmp(output_files[i]->ctx->oformat->name, "rtp")) {
    2762           0 :             avc[j] = output_files[i]->ctx;
    2763           0 :             j++;
    2764             :         }
    2765             :     }
    2766             : 
    2767           0 :     if (!j)
    2768           0 :         goto fail;
    2769             : 
    2770           0 :     av_sdp_create(avc, j, sdp, sizeof(sdp));
    2771             : 
    2772           0 :     if (!sdp_filename) {
    2773           0 :         printf("SDP:\n%s\n", sdp);
    2774           0 :         fflush(stdout);
    2775             :     } else {
    2776           0 :         if (avio_open2(&sdp_pb, sdp_filename, AVIO_FLAG_WRITE, &int_cb, NULL) < 0) {
    2777           0 :             av_log(NULL, AV_LOG_ERROR, "Failed to open sdp file '%s'\n", sdp_filename);
    2778             :         } else {
    2779           0 :             avio_printf(sdp_pb, "SDP:\n%s", sdp);
    2780           0 :             avio_closep(&sdp_pb);
    2781           0 :             av_freep(&sdp_filename);
    2782             :         }
    2783             :     }
    2784             : 
    2785             : fail:
    2786           0 :     av_freep(&avc);
    2787             : }
    2788             : 
    2789           0 : static const HWAccel *get_hwaccel(enum AVPixelFormat pix_fmt)
    2790             : {
    2791             :     int i;
    2792           0 :     for (i = 0; hwaccels[i].name; i++)
    2793           0 :         if (hwaccels[i].pix_fmt == pix_fmt)
    2794           0 :             return &hwaccels[i];
    2795           0 :     return NULL;
    2796             : }
    2797             : 
    2798         826 : static enum AVPixelFormat get_format(AVCodecContext *s, const enum AVPixelFormat *pix_fmts)
    2799             : {
    2800         826 :     InputStream *ist = s->opaque;
    2801             :     const enum AVPixelFormat *p;
    2802             :     int ret;
    2803             : 
    2804         826 :     for (p = pix_fmts; *p != -1; p++) {
    2805         826 :         const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(*p);
    2806             :         const HWAccel *hwaccel;
    2807             : 
    2808         826 :         if (!(desc->flags & AV_PIX_FMT_FLAG_HWACCEL))
    2809         826 :             break;
    2810             : 
    2811           0 :         hwaccel = get_hwaccel(*p);
    2812           0 :         if (!hwaccel ||
    2813           0 :             (ist->active_hwaccel_id && ist->active_hwaccel_id != hwaccel->id) ||
    2814           0 :             (ist->hwaccel_id != HWACCEL_AUTO && ist->hwaccel_id != hwaccel->id))
    2815           0 :             continue;
    2816             : 
    2817           0 :         ret = hwaccel->init(s);
    2818           0 :         if (ret < 0) {
    2819           0 :             if (ist->hwaccel_id == hwaccel->id) {
    2820           0 :                 av_log(NULL, AV_LOG_FATAL,
    2821             :                        "%s hwaccel requested for input stream #%d:%d, "
    2822             :                        "but cannot be initialized.\n", hwaccel->name,
    2823           0 :                        ist->file_index, ist->st->index);
    2824           0 :                 return AV_PIX_FMT_NONE;
    2825             :             }
    2826           0 :             continue;
    2827             :         }
    2828             : 
    2829           0 :         if (ist->hw_frames_ctx) {
    2830           0 :             s->hw_frames_ctx = av_buffer_ref(ist->hw_frames_ctx);
    2831           0 :             if (!s->hw_frames_ctx)
    2832           0 :                 return AV_PIX_FMT_NONE;
    2833             :         }
    2834             : 
    2835           0 :         ist->active_hwaccel_id = hwaccel->id;
    2836           0 :         ist->hwaccel_pix_fmt   = *p;
    2837           0 :         break;
    2838             :     }
    2839             : 
    2840         826 :     return *p;
    2841             : }
    2842             : 
    2843      352857 : static int get_buffer(AVCodecContext *s, AVFrame *frame, int flags)
    2844             : {
    2845      352857 :     InputStream *ist = s->opaque;
    2846             : 
    2847      352857 :     if (ist->hwaccel_get_buffer && frame->format == ist->hwaccel_pix_fmt)
    2848           0 :         return ist->hwaccel_get_buffer(s, frame, flags);
    2849             : 
    2850      352857 :     return avcodec_default_get_buffer2(s, frame, flags);
    2851             : }
    2852             : 
    2853        5525 : static int init_input_stream(int ist_index, char *error, int error_len)
    2854             : {
    2855             :     int ret;
    2856        5525 :     InputStream *ist = input_streams[ist_index];
    2857             : 
    2858        5525 :     if (ist->decoding_needed) {
    2859        5131 :         AVCodec *codec = ist->dec;
    2860        5131 :         if (!codec) {
    2861           0 :             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
    2862           0 :                     avcodec_get_name(ist->dec_ctx->codec_id), ist->file_index, ist->st->index);
    2863           0 :             return AVERROR(EINVAL);
    2864             :         }
    2865             : 
    2866        5131 :         ist->dec_ctx->opaque                = ist;
    2867        5131 :         ist->dec_ctx->get_format            = get_format;
    2868        5131 :         ist->dec_ctx->get_buffer2           = get_buffer;
    2869        5131 :         ist->dec_ctx->thread_safe_callbacks = 1;
    2870             : 
    2871        5131 :         av_opt_set_int(ist->dec_ctx, "refcounted_frames", 1, 0);
    2872        5131 :         if (ist->dec_ctx->codec_id == AV_CODEC_ID_DVB_SUBTITLE &&
    2873           0 :            (ist->decoding_needed & DECODING_FOR_OST)) {
    2874           0 :             av_dict_set(&ist->decoder_opts, "compute_edt", "1", AV_DICT_DONT_OVERWRITE);
    2875           0 :             if (ist->decoding_needed & DECODING_FOR_FILTER)
    2876           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");
    2877             :         }
    2878             : 
    2879        5131 :         av_dict_set(&ist->decoder_opts, "sub_text_format", "ass", AV_DICT_DONT_OVERWRITE);
    2880             : 
    2881             :         /* Useful for subtitles retiming by lavf (FIXME), skipping samples in
    2882             :          * audio, and video decoders such as cuvid or mediacodec */
    2883        5131 :         av_codec_set_pkt_timebase(ist->dec_ctx, ist->st->time_base);
    2884             : 
    2885        5131 :         if (!av_dict_get(ist->decoder_opts, "threads", NULL, 0))
    2886          36 :             av_dict_set(&ist->decoder_opts, "threads", "auto", 0);
    2887        5131 :         if ((ret = avcodec_open2(ist->dec_ctx, codec, &ist->decoder_opts)) < 0) {
    2888           0 :             if (ret == AVERROR_EXPERIMENTAL)
    2889           0 :                 abort_codec_experimental(codec, 0);
    2890             : 
    2891           0 :             snprintf(error, error_len,
    2892             :                      "Error while opening decoder for input stream "
    2893             :                      "#%d:%d : %s",
    2894           0 :                      ist->file_index, ist->st->index, av_err2str(ret));
    2895           0 :             return ret;
    2896             :         }
    2897        5131 :         assert_avoptions(ist->decoder_opts);
    2898             :     }
    2899             : 
    2900        5525 :     ist->next_pts = AV_NOPTS_VALUE;
    2901        5525 :     ist->next_dts = AV_NOPTS_VALUE;
    2902             : 
    2903        5525 :     return 0;
    2904             : }
    2905             : 
    2906       15517 : static InputStream *get_input_stream(OutputStream *ost)
    2907             : {
    2908       15517 :     if (ost->source_index >= 0)
    2909       15427 :         return input_streams[ost->source_index];
    2910          90 :     return NULL;
    2911             : }
    2912             : 
    2913           1 : static int compare_int64(const void *a, const void *b)
    2914             : {
    2915           1 :     return FFDIFFSIGN(*(const int64_t *)a, *(const int64_t *)b);
    2916             : }
    2917             : 
    2918             : /* open the muxer when all the streams are initialized */
    2919        5301 : static int check_init_output_file(OutputFile *of, int file_index)
    2920             : {
    2921             :     int ret, i;
    2922             : 
    2923       10709 :     for (i = 0; i < of->ctx->nb_streams; i++) {
    2924        5541 :         OutputStream *ost = output_streams[of->ost_index + i];
    2925        5541 :         if (!ost->initialized)
    2926         133 :             return 0;
    2927             :     }
    2928             : 
    2929        5168 :     of->ctx->interrupt_callback = int_cb;
    2930             : 
    2931        5168 :     ret = avformat_write_header(of->ctx, &of->opts);
    2932        5168 :     if (ret < 0) {
    2933           0 :         av_log(NULL, AV_LOG_ERROR,
    2934             :                "Could not write header for output file #%d "
    2935             :                "(incorrect codec parameters ?): %s\n",
    2936           0 :                file_index, av_err2str(ret));
    2937           0 :         return ret;
    2938             :     }
    2939             :     //assert_avoptions(of->opts);
    2940        5168 :     of->header_written = 1;
    2941             : 
    2942        5168 :     av_dump_format(of->ctx, file_index, of->ctx->filename, 1);
    2943             : 
    2944        5168 :     if (sdp_filename || want_sdp)
    2945           0 :         print_sdp();
    2946             : 
    2947             :     /* flush the muxing queues */
    2948       10468 :     for (i = 0; i < of->ctx->nb_streams; i++) {
    2949        5300 :         OutputStream *ost = output_streams[of->ost_index + i];
    2950             : 
    2951             :         /* try to improve muxing time_base (only possible if nothing has been written yet) */
    2952        5300 :         if (!av_fifo_size(ost->muxing_queue))
    2953        5229 :             ost->mux_timebase = ost->st->time_base;
    2954             : 
    2955       10870 :         while (av_fifo_size(ost->muxing_queue)) {
    2956             :             AVPacket pkt;
    2957         270 :             av_fifo_generic_read(ost->muxing_queue, &pkt, sizeof(pkt), NULL);
    2958         270 :             write_packet(of, &pkt, ost, 1);
    2959             :         }
    2960             :     }
    2961             : 
    2962        5168 :     return 0;
    2963             : }
    2964             : 
    2965        5300 : static int init_output_bsfs(OutputStream *ost)
    2966             : {
    2967             :     AVBSFContext *ctx;
    2968             :     int i, ret;
    2969             : 
    2970        5300 :     if (!ost->nb_bitstream_filters)
    2971        5293 :         return 0;
    2972             : 
    2973          14 :     for (i = 0; i < ost->nb_bitstream_filters; i++) {
    2974           7 :         ctx = ost->bsf_ctx[i];
    2975             : 
    2976          14 :         ret = avcodec_parameters_copy(ctx->par_in,
    2977           7 :                                       i ? ost->bsf_ctx[i - 1]->par_out : ost->st->codecpar);
    2978           7 :         if (ret < 0)
    2979           0 :             return ret;
    2980             : 
    2981           7 :         ctx->time_base_in = i ? ost->bsf_ctx[i - 1]->time_base_out : ost->st->time_base;
    2982             : 
    2983           7 :         ret = av_bsf_init(ctx);
    2984           7 :         if (ret < 0) {
    2985           0 :             av_log(NULL, AV_LOG_ERROR, "Error initializing bitstream filter: %s\n",
    2986           0 :                    ost->bsf_ctx[i]->filter->name);
    2987           0 :             return ret;
    2988             :         }
    2989             :     }
    2990             : 
    2991           7 :     ctx = ost->bsf_ctx[ost->nb_bitstream_filters - 1];
    2992           7 :     ret = avcodec_parameters_copy(ost->st->codecpar, ctx->par_out);
    2993           7 :     if (ret < 0)
    2994           0 :         return ret;
    2995             : 
    2996           7 :     ost->st->time_base = ctx->time_base_out;
    2997             : 
    2998           7 :     return 0;
    2999             : }
    3000             : 
    3001         176 : static int init_output_stream_streamcopy(OutputStream *ost)
    3002             : {
    3003         176 :     OutputFile *of = output_files[ost->file_index];
    3004         176 :     InputStream *ist = get_input_stream(ost);
    3005         176 :     AVCodecParameters *par_dst = ost->st->codecpar;
    3006         176 :     AVCodecParameters *par_src = ost->ref_par;
    3007             :     AVRational sar;
    3008             :     int i, ret;
    3009         176 :     uint32_t codec_tag = par_dst->codec_tag;
    3010             : 
    3011         176 :     av_assert0(ist && !ost->filter);
    3012             : 
    3013         176 :     ret = avcodec_parameters_to_context(ost->enc_ctx, ist->st->codecpar);
    3014         176 :     if (ret >= 0)
    3015         176 :         ret = av_opt_set_dict(ost->enc_ctx, &ost->encoder_opts);
    3016         176 :     if (ret < 0) {
    3017           0 :         av_log(NULL, AV_LOG_FATAL,
    3018             :                "Error setting up codec context options.\n");
    3019           0 :         return ret;
    3020             :     }
    3021         176 :     avcodec_parameters_from_context(par_src, ost->enc_ctx);
    3022             : 
    3023         176 :     if (!codec_tag) {
    3024             :         unsigned int codec_tag_tmp;
    3025         200 :         if (!of->ctx->oformat->codec_tag ||
    3026          37 :             av_codec_get_id (of->ctx->oformat->codec_tag, par_src->codec_tag) == par_src->codec_id ||
    3027          13 :             !av_codec_get_tag2(of->ctx->oformat->codec_tag, par_src->codec_id, &codec_tag_tmp))
    3028         166 :             codec_tag = par_src->codec_tag;
    3029             :     }
    3030             : 
    3031         176 :     ret = avcodec_parameters_copy(par_dst, par_src);
    3032         176 :     if (ret < 0)
    3033           0 :         return ret;
    3034             : 
    3035         176 :     par_dst->codec_tag = codec_tag;
    3036             : 
    3037         176 :     if (!ost->frame_rate.num)
    3038         176 :         ost->frame_rate = ist->framerate;
    3039         176 :     ost->st->avg_frame_rate = ost->frame_rate;
    3040             : 
    3041         176 :     ret = avformat_transfer_internal_stream_timing_info(of->ctx->oformat, ost->st, ist->st, copy_tb);
    3042         176 :     if (ret < 0)
    3043           0 :         return ret;
    3044             : 
    3045             :     // copy timebase while removing common factors
    3046         176 :     if (ost->st->time_base.num <= 0 || ost->st->time_base.den <= 0)
    3047         176 :         ost->st->time_base = av_add_q(av_stream_get_codec_timebase(ost->st), (AVRational){0, 1});
    3048             : 
    3049             :     // copy estimated duration as a hint to the muxer
    3050         176 :     if (ost->st->duration <= 0 && ist->st->duration > 0)
    3051         119 :         ost->st->duration = av_rescale_q(ist->st->duration, ist->st->time_base, ost->st->time_base);
    3052             : 
    3053             :     // copy disposition
    3054         176 :     ost->st->disposition = ist->st->disposition;
    3055             : 
    3056         176 :     if (ist->st->nb_side_data) {
    3057           6 :         for (i = 0; i < ist->st->nb_side_data; i++) {
    3058           3 :             const AVPacketSideData *sd_src = &ist->st->side_data[i];
    3059             :             uint8_t *dst_data;
    3060             : 
    3061           3 :             dst_data = av_stream_new_side_data(ost->st, sd_src->type, sd_src->size);
    3062           3 :             if (!dst_data)
    3063           0 :                 return AVERROR(ENOMEM);
    3064           3 :             memcpy(dst_data, sd_src->data, sd_src->size);
    3065             :         }
    3066             :     }
    3067             : 
    3068         176 :     if (ost->rotate_overridden) {
    3069           1 :         uint8_t *sd = av_stream_new_side_data(ost->st, AV_PKT_DATA_DISPLAYMATRIX,
    3070             :                                               sizeof(int32_t) * 9);
    3071           1 :         if (sd)
    3072           1 :             av_display_rotation_set((int32_t *)sd, -ost->rotate_override_value);
    3073             :     }
    3074             : 
    3075         176 :     ost->parser = av_parser_init(par_dst->codec_id);
    3076         176 :     ost->parser_avctx = avcodec_alloc_context3(NULL);
    3077         176 :     if (!ost->parser_avctx)
    3078           0 :         return AVERROR(ENOMEM);
    3079             : 
    3080         176 :     switch (par_dst->codec_type) {
    3081             :     case AVMEDIA_TYPE_AUDIO:
    3082          84 :         if (audio_volume != 256) {
    3083           0 :             av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
    3084           0 :             exit_program(1);
    3085             :         }
    3086          84 :         if((par_dst->block_align == 1 || par_dst->block_align == 1152 || par_dst->block_align == 576) && par_dst->codec_id == AV_CODEC_ID_MP3)
    3087           0 :             par_dst->block_align= 0;
    3088          84 :         if(par_dst->codec_id == AV_CODEC_ID_AC3)
    3089           2 :             par_dst->block_align= 0;
    3090          84 :         break;
    3091             :     case AVMEDIA_TYPE_VIDEO:
    3092          77 :         if (ost->frame_aspect_ratio.num) { // overridden by the -aspect cli option
    3093           0 :             sar =
    3094             :                 av_mul_q(ost->frame_aspect_ratio,
    3095           0 :                          (AVRational){ par_dst->height, par_dst->width });
    3096           0 :             av_log(NULL, AV_LOG_WARNING, "Overriding aspect ratio "
    3097             :                    "with stream copy may produce invalid files\n");
    3098             :             }
    3099          77 :         else if (ist->st->sample_aspect_ratio.num)
    3100          27 :             sar = ist->st->sample_aspect_ratio;
    3101             :         else
    3102          50 :             sar = par_src->sample_aspect_ratio;
    3103          77 :         ost->st->sample_aspect_ratio = par_dst->sample_aspect_ratio = sar;
    3104          77 :         ost->st->avg_frame_rate = ist->st->avg_frame_rate;
    3105          77 :         ost->st->r_frame_rate = ist->st->r_frame_rate;
    3106          77 :         break;
    3107             :     }
    3108             : 
    3109         176 :     ost->mux_timebase = ist->st->time_base;
    3110             : 
    3111         176 :     return 0;
    3112             : }
    3113             : 
    3114        5123 : static void set_encoder_id(OutputFile *of, OutputStream *ost)
    3115             : {
    3116             :     AVDictionaryEntry *e;
    3117             : 
    3118             :     uint8_t *encoder_string;
    3119             :     int encoder_string_len;
    3120        5123 :     int format_flags = 0;
    3121        5123 :     int codec_flags = 0;
    3122             : 
    3123        5123 :     if (av_dict_get(ost->st->metadata, "encoder",  NULL, 0))
    3124           0 :         return;
    3125             : 
    3126        5123 :     e = av_dict_get(of->opts, "fflags", NULL, 0);
    3127        5123 :     if (e) {
    3128        4330 :         const AVOption *o = av_opt_find(of->ctx, "fflags", NULL, 0, 0);
    3129        4330 :         if (!o)
    3130           0 :             return;
    3131        4330 :         av_opt_eval_flags(of->ctx, o, e->value, &format_flags);
    3132             :     }
    3133        5123 :     e = av_dict_get(ost->encoder_opts, "flags", NULL, 0);
    3134        5123 :     if (e) {
    3135        4290 :         const AVOption *o = av_opt_find(ost->enc_ctx, "flags", NULL, 0, 0);
    3136        4290 :         if (!o)
    3137           0 :             return;
    3138        4290 :         av_opt_eval_flags(ost->enc_ctx, o, e->value, &codec_flags);
    3139             :     }
    3140             : 
    3141        5123 :     encoder_string_len = sizeof(LIBAVCODEC_IDENT) + strlen(ost->enc->name) + 2;
    3142        5123 :     encoder_string     = av_mallocz(encoder_string_len);
    3143        5123 :     if (!encoder_string)
    3144           0 :         exit_program(1);
    3145             : 
    3146        5123 :     if (!(format_flags & AVFMT_FLAG_BITEXACT) && !(codec_flags & AV_CODEC_FLAG_BITEXACT))
    3147         785 :         av_strlcpy(encoder_string, LIBAVCODEC_IDENT " ", encoder_string_len);
    3148             :     else
    3149        4338 :         av_strlcpy(encoder_string, "Lavc ", encoder_string_len);
    3150        5123 :     av_strlcat(encoder_string, ost->enc->name, encoder_string_len);
    3151        5123 :     av_dict_set(&ost->st->metadata, "encoder",  encoder_string,
    3152             :                 AV_DICT_DONT_STRDUP_VAL | AV_DICT_DONT_OVERWRITE);
    3153             : }
    3154             : 
    3155           1 : static void parse_forced_key_frames(char *kf, OutputStream *ost,
    3156             :                                     AVCodecContext *avctx)
    3157             : {
    3158             :     char *p;
    3159           1 :     int n = 1, i, size, index = 0;
    3160             :     int64_t t, *pts;
    3161             : 
    3162          14 :     for (p = kf; *p; p++)
    3163          13 :         if (*p == ',')
    3164           1 :             n++;
    3165           1 :     size = n;
    3166           1 :     pts = av_malloc_array(size, sizeof(*pts));
    3167           1 :     if (!pts) {
    3168           0 :         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
    3169           0 :         exit_program(1);
    3170             :     }
    3171             : 
    3172           1 :     p = kf;
    3173           3 :     for (i = 0; i < n; i++) {
    3174           2 :         char *next = strchr(p, ',');
    3175             : 
    3176           2 :         if (next)
    3177           1 :             *next++ = 0;
    3178             : 
    3179           2 :         if (!memcmp(p, "chapters", 8)) {
    3180             : 
    3181           0 :             AVFormatContext *avf = output_files[ost->file_index]->ctx;
    3182             :             int j;
    3183             : 
    3184           0 :             if (avf->nb_chapters > INT_MAX - size ||
    3185           0 :                 !(pts = av_realloc_f(pts, size += avf->nb_chapters - 1,
    3186             :                                      sizeof(*pts)))) {
    3187           0 :                 av_log(NULL, AV_LOG_FATAL,
    3188             :                        "Could not allocate forced key frames array.\n");
    3189           0 :                 exit_program(1);
    3190             :             }
    3191           0 :             t = p[8] ? parse_time_or_die("force_key_frames", p + 8, 1) : 0;
    3192           0 :             t = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
    3193             : 
    3194           0 :             for (j = 0; j < avf->nb_chapters; j++) {
    3195           0 :                 AVChapter *c = avf->chapters[j];
    3196             :                 av_assert1(index < size);
    3197           0 :                 pts[index++] = av_rescale_q(c->start, c->time_base,
    3198           0 :                                             avctx->time_base) + t;
    3199             :             }
    3200             : 
    3201             :         } else {
    3202             : 
    3203           2 :             t = parse_time_or_die("force_key_frames", p, 1);
    3204             :             av_assert1(index < size);
    3205           2 :             pts[index++] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
    3206             : 
    3207             :         }
    3208             : 
    3209           2 :         p = next;
    3210             :     }
    3211             : 
    3212           1 :     av_assert0(index == size);
    3213           1 :     qsort(pts, size, sizeof(*pts), compare_int64);
    3214           1 :     ost->forced_kf_count = size;
    3215           1 :     ost->forced_kf_pts   = pts;
    3216           1 : }
    3217             : 
    3218        5095 : static void init_encoder_time_base(OutputStream *ost, AVRational default_time_base)
    3219             : {
    3220        5095 :     InputStream *ist = get_input_stream(ost);
    3221        5095 :     AVCodecContext *enc_ctx = ost->enc_ctx;
    3222             :     AVFormatContext *oc;
    3223             : 
    3224        5095 :     if (ost->enc_timebase.num > 0) {
    3225           0 :         enc_ctx->time_base = ost->enc_timebase;
    3226           0 :         return;
    3227             :     }
    3228             : 
    3229        5095 :     if (ost->enc_timebase.num < 0) {
    3230           0 :         if (ist) {
    3231           0 :             enc_ctx->time_base = ist->st->time_base;
    3232           0 :             return;
    3233             :         }
    3234             : 
    3235           0 :         oc = output_files[ost->file_index]->ctx;
    3236           0 :         av_log(oc, AV_LOG_WARNING, "Input stream data not available, using default time base\n");
    3237             :     }
    3238             : 
    3239        5095 :     enc_ctx->time_base = default_time_base;
    3240             : }
    3241             : 
    3242        5123 : static int init_output_stream_encode(OutputStream *ost)
    3243             : {
    3244        5123 :     InputStream *ist = get_input_stream(ost);
    3245        5123 :     AVCodecContext *enc_ctx = ost->enc_ctx;
    3246        5123 :     AVCodecContext *dec_ctx = NULL;
    3247        5123 :     AVFormatContext *oc = output_files[ost->file_index]->ctx;
    3248             :     int j, ret;
    3249             : 
    3250        5123 :     set_encoder_id(output_files[ost->file_index], ost);
    3251             : 
    3252             :     // Muxers use AV_PKT_DATA_DISPLAYMATRIX to signal rotation. On the other
    3253             :     // hand, the legacy API makes demuxers set "rotate" metadata entries,
    3254             :     // which have to be filtered out to prevent leaking them to output files.
    3255        5123 :     av_dict_set(&ost->st->metadata, "rotate", NULL, 0);
    3256             : 
    3257        5123 :     if (ist) {
    3258        5093 :         ost->st->disposition          = ist->st->disposition;
    3259             : 
    3260        5093 :         dec_ctx = ist->dec_ctx;
    3261             : 
    3262        5093 :         enc_ctx->chroma_sample_location = dec_ctx->chroma_sample_location;
    3263             :     } else {
    3264          64 :         for (j = 0; j < oc->nb_streams; j++) {
    3265          34 :             AVStream *st = oc->streams[j];
    3266          34 :             if (st != ost->st && st->codecpar->codec_type == ost->st->codecpar->codec_type)
    3267           0 :                 break;
    3268             :         }
    3269          30 :         if (j == oc->nb_streams)
    3270          53 :             if (ost->st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO ||
    3271          23 :                 ost->st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
    3272          30 :                 ost->st->disposition = AV_DISPOSITION_DEFAULT;
    3273             :     }
    3274             : 
    3275        5123 :     if (enc_ctx->codec_type == AVMEDIA_TYPE_VIDEO) {
    3276        4042 :         if (!ost->frame_rate.num)
    3277        4025 :             ost->frame_rate = av_buffersink_get_frame_rate(ost->filter->filter);
    3278        4042 :         if (ist && !ost->frame_rate.num)
    3279           0 :             ost->frame_rate = ist->framerate;
    3280        4042 :         if (ist && !ost->frame_rate.num)
    3281           0 :             ost->frame_rate = ist->st->r_frame_rate;
    3282        4042 :         if (ist && !ost->frame_rate.num) {
    3283           0 :             ost->frame_rate = (AVRational){25, 1};
    3284           0 :             av_log(NULL, AV_LOG_WARNING,
    3285             :                    "No information "
    3286             :                    "about the input framerate is available. Falling "
    3287             :                    "back to a default value of 25fps for output stream #%d:%d. Use the -r option "
    3288             :                    "if you want a different framerate.\n",
    3289             :                    ost->file_index, ost->index);
    3290             :         }
    3291             : //      ost->frame_rate = ist->st->avg_frame_rate.num ? ist->st->avg_frame_rate : (AVRational){25, 1};
    3292        4042 :         if (ost->enc->supported_framerates && !ost->force_fps) {
    3293          49 :             int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
    3294          49 :             ost->frame_rate = ost->enc->supported_framerates[idx];
    3295             :         }
    3296             :         // reduce frame rate for mpeg4 to be within the spec limits
    3297        4042 :         if (enc_ctx->codec_id == AV_CODEC_ID_MPEG4) {
    3298         116 :             av_reduce(&ost->frame_rate.num, &ost->frame_rate.den,
    3299         116 :                       ost->frame_rate.num, ost->frame_rate.den, 65535);
    3300             :         }
    3301             :     }
    3302             : 
    3303        5123 :     switch (enc_ctx->codec_type) {
    3304             :     case AVMEDIA_TYPE_AUDIO:
    3305        1053 :         enc_ctx->sample_fmt     = av_buffersink_get_format(ost->filter->filter);
    3306        1053 :         if (dec_ctx)
    3307        1046 :             enc_ctx->bits_per_raw_sample = FFMIN(dec_ctx->bits_per_raw_sample,
    3308             :                                                  av_get_bytes_per_sample(enc_ctx->sample_fmt) << 3);
    3309        1053 :         enc_ctx->sample_rate    = av_buffersink_get_sample_rate(ost->filter->filter);
    3310        1053 :         enc_ctx->channel_layout = av_buffersink_get_channel_layout(ost->filter->filter);
    3311        1053 :         enc_ctx->channels       = av_buffersink_get_channels(ost->filter->filter);
    3312             : 
    3313        1053 :         init_encoder_time_base(ost, av_make_q(1, enc_ctx->sample_rate));
    3314        1053 :         break;
    3315             : 
    3316             :     case AVMEDIA_TYPE_VIDEO:
    3317        4042 :         init_encoder_time_base(ost, av_inv_q(ost->frame_rate));
    3318             : 
    3319        4042 :         if (!(enc_ctx->time_base.num && enc_ctx->time_base.den))
    3320           0 :             enc_ctx->time_base = av_buffersink_get_time_base(ost->filter->filter);
    3321        4042 :         if (   av_q2d(enc_ctx->time_base) < 0.001 && video_sync_method != VSYNC_PASSTHROUGH
    3322           2 :            && (video_sync_method == VSYNC_CFR || video_sync_method == VSYNC_VSCFR || (video_sync_method == VSYNC_AUTO && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
    3323           0 :             av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not efficiently supporting it.\n"
    3324             :                                        "Please consider specifying a lower framerate, a different muxer or -vsync 2\n");
    3325             :         }
    3326        4042 :         for (j = 0; j < ost->forced_kf_count; j++)
    3327           0 :             ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
    3328           0 :                                                  AV_TIME_BASE_Q,
    3329             :                                                  enc_ctx->time_base);
    3330             : 
    3331        4042 :         enc_ctx->width  = av_buffersink_get_w(ost->filter->filter);
    3332        4042 :         enc_ctx->height = av_buffersink_get_h(ost->filter->filter);
    3333        8084 :         enc_ctx->sample_aspect_ratio = ost->st->sample_aspect_ratio =
    3334        4042 :             ost->frame_aspect_ratio.num ? // overridden by the -aspect cli option
    3335        8084 :             av_mul_q(ost->frame_aspect_ratio, (AVRational){ enc_ctx->height, enc_ctx->width }) :
    3336        4042 :             av_buffersink_get_sample_aspect_ratio(ost->filter->filter);
    3337        4042 :         if (!strncmp(ost->enc->name, "libx264", 7) &&
    3338           0 :             enc_ctx->pix_fmt == AV_PIX_FMT_NONE &&
    3339           0 :             av_buffersink_get_format(ost->filter->filter) != AV_PIX_FMT_YUV420P)
    3340           0 :             av_log(NULL, AV_LOG_WARNING,
    3341             :                    "No pixel format specified, %s for H.264 encoding chosen.\n"
    3342             :                    "Use -pix_fmt yuv420p for compatibility with outdated media players.\n",
    3343           0 :                    av_get_pix_fmt_name(av_buffersink_get_format(ost->filter->filter)));
    3344        4079 :         if (!strncmp(ost->enc->name, "mpeg2video", 10) &&
    3345          69 :             enc_ctx->pix_fmt == AV_PIX_FMT_NONE &&
    3346          32 :             av_buffersink_get_format(ost->filter->filter) != AV_PIX_FMT_YUV420P)
    3347           0 :             av_log(NULL, AV_LOG_WARNING,
    3348             :                    "No pixel format specified, %s for MPEG-2 encoding chosen.\n"
    3349             :                    "Use -pix_fmt yuv420p for compatibility with outdated media players.\n",
    3350           0 :                    av_get_pix_fmt_name(av_buffersink_get_format(ost->filter->filter)));
    3351        4042 :         enc_ctx->pix_fmt = av_buffersink_get_format(ost->filter->filter);
    3352        4042 :         if (dec_ctx)
    3353        4019 :             enc_ctx->bits_per_raw_sample = FFMIN(dec_ctx->bits_per_raw_sample,
    3354             :                                                  av_pix_fmt_desc_get(enc_ctx->pix_fmt)->comp[0].depth);
    3355             : 
    3356        4042 :         enc_ctx->framerate = ost->frame_rate;
    3357             : 
    3358        4042 :         ost->st->avg_frame_rate = ost->frame_rate;
    3359             : 
    3360        8061 :         if (!dec_ctx ||
    3361        7461 :             enc_ctx->width   != dec_ctx->width  ||
    3362        6708 :             enc_ctx->height  != dec_ctx->height ||
    3363        3266 :             enc_ctx->pix_fmt != dec_ctx->pix_fmt) {
    3364        2530 :             enc_ctx->bits_per_raw_sample = frame_bits_per_raw_sample;
    3365             :         }
    3366             : 
    3367        4042 :         if (ost->forced_keyframes) {
    3368           1 :             if (!strncmp(ost->forced_keyframes, "expr:", 5)) {
    3369           0 :                 ret = av_expr_parse(&ost->forced_keyframes_pexpr, ost->forced_keyframes+5,
    3370             :                                     forced_keyframes_const_names, NULL, NULL, NULL, NULL, 0, NULL);
    3371           0 :                 if (ret < 0) {
    3372           0 :                     av_log(NULL, AV_LOG_ERROR,
    3373           0 :                            "Invalid force_key_frames expression '%s'\n", ost->forced_keyframes+5);
    3374           0 :                     return ret;
    3375             :                 }
    3376           0 :                 ost->forced_keyframes_expr_const_values[FKF_N] = 0;
    3377           0 :                 ost->forced_keyframes_expr_const_values[FKF_N_FORCED] = 0;
    3378           0 :                 ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N] = NAN;
    3379           0 :                 ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T] = NAN;
    3380             : 
    3381             :             // Don't parse the 'forced_keyframes' in case of 'keep-source-keyframes',
    3382             :             // parse it only for static kf timings
    3383           1 :             } else if(strncmp(ost->forced_keyframes, "source", 6)) {
    3384           1 :                 parse_forced_key_frames(ost->forced_keyframes, ost, ost->enc_ctx);
    3385             :             }
    3386             :         }
    3387        4042 :         break;
    3388             :     case AVMEDIA_TYPE_SUBTITLE:
    3389          28 :         enc_ctx->time_base = AV_TIME_BASE_Q;
    3390          28 :         if (!enc_ctx->width) {
    3391          28 :             enc_ctx->width     = input_streams[ost->source_index]->st->codecpar->width;
    3392          28 :             enc_ctx->height    = input_streams[ost->source_index]->st->codecpar->height;
    3393             :         }
    3394          28 :         break;
    3395             :     case AVMEDIA_TYPE_DATA:
    3396           0 :         break;
    3397             :     default:
    3398           0 :         abort();
    3399             :         break;
    3400             :     }
    3401             : 
    3402        5123 :     ost->mux_timebase = enc_ctx->time_base;
    3403             : 
    3404        5123 :     return 0;
    3405             : }
    3406             : 
    3407        5300 : static int init_output_stream(OutputStream *ost, char *error, int error_len)
    3408             : {
    3409        5300 :     int ret = 0;
    3410             : 
    3411        5300 :     if (ost->encoding_needed) {
    3412        5123 :         AVCodec      *codec = ost->enc;
    3413        5123 :         AVCodecContext *dec = NULL;
    3414             :         InputStream *ist;
    3415             : 
    3416        5123 :         ret = init_output_stream_encode(ost);
    3417        5123 :         if (ret < 0)
    3418           0 :             return ret;
    3419             : 
    3420        5123 :         if ((ist = get_input_stream(ost)))
    3421        5093 :             dec = ist->dec_ctx;
    3422        5123 :         if (dec && dec->subtitle_header) {
    3423             :             /* ASS code assumes this buffer is null terminated so add extra byte. */
    3424          27 :             ost->enc_ctx->subtitle_header = av_mallocz(dec->subtitle_header_size + 1);
    3425          27 :             if (!ost->enc_ctx->subtitle_header)
    3426           0 :                 return AVERROR(ENOMEM);
    3427          27 :             memcpy(ost->enc_ctx->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
    3428          27 :             ost->enc_ctx->subtitle_header_size = dec->subtitle_header_size;
    3429             :         }
    3430        5123 :         if (!av_dict_get(ost->encoder_opts, "threads", NULL, 0))
    3431        2304 :             av_dict_set(&ost->encoder_opts, "threads", "auto", 0);
    3432        6176 :         if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
    3433        2067 :             !codec->defaults &&
    3434        1965 :             !av_dict_get(ost->encoder_opts, "b", NULL, 0) &&
    3435         951 :             !av_dict_get(ost->encoder_opts, "ab", NULL, 0))
    3436         951 :             av_dict_set(&ost->encoder_opts, "b", "128000", 0);
    3437             : 
    3438        5123 :         if (ost->filter && av_buffersink_get_hw_frames_ctx(ost->filter->filter) &&
    3439           0 :             ((AVHWFramesContext*)av_buffersink_get_hw_frames_ctx(ost->filter->filter)->data)->format ==
    3440           0 :             av_buffersink_get_format(ost->filter->filter)) {
    3441           0 :             ost->enc_ctx->hw_frames_ctx = av_buffer_ref(av_buffersink_get_hw_frames_ctx(ost->filter->filter));
    3442           0 :             if (!ost->enc_ctx->hw_frames_ctx)
    3443           0 :                 return AVERROR(ENOMEM);
    3444             :         }
    3445             : 
    3446        5123 :         if ((ret = avcodec_open2(ost->enc_ctx, codec, &ost->encoder_opts)) < 0) {
    3447           0 :             if (ret == AVERROR_EXPERIMENTAL)
    3448           0 :                 abort_codec_experimental(codec, 1);
    3449           0 :             snprintf(error, error_len,
    3450             :                      "Error while opening encoder for output stream #%d:%d - "
    3451             :                      "maybe incorrect parameters such as bit_rate, rate, width or height",
    3452             :                     ost->file_index, ost->index);
    3453           0 :             return ret;
    3454             :         }
    3455        6176 :         if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
    3456        1053 :             !(ost->enc->capabilities & AV_CODEC_CAP_VARIABLE_FRAME_SIZE))
    3457          86 :             av_buffersink_set_frame_size(ost->filter->filter,
    3458          86 :                                             ost->enc_ctx->frame_size);
    3459        5123 :         assert_avoptions(ost->encoder_opts);
    3460        5123 :         if (ost->enc_ctx->bit_rate && ost->enc_ctx->bit_rate < 1000)
    3461           0 :             av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
    3462             :                                          " It takes bits/s as argument, not kbits/s\n");
    3463             : 
    3464        5123 :         ret = avcodec_parameters_from_context(ost->st->codecpar, ost->enc_ctx);
    3465        5123 :         if (ret < 0) {
    3466           0 :             av_log(NULL, AV_LOG_FATAL,
    3467             :                    "Error initializing the output stream codec context.\n");
    3468           0 :             exit_program(1);
    3469             :         }
    3470             :         /*
    3471             :          * FIXME: ost->st->codec should't be needed here anymore.
    3472             :          */
    3473        5123 :         ret = avcodec_copy_context(ost->st->codec, ost->enc_ctx);
    3474        5123 :         if (ret < 0)
    3475           0 :             return ret;
    3476             : 
    3477        5123 :         if (ost->enc_ctx->nb_coded_side_data) {
    3478             :             int i;
    3479             : 
    3480         366 :             for (i = 0; i < ost->enc_ctx->nb_coded_side_data; i++) {
    3481         183 :                 const AVPacketSideData *sd_src = &ost->enc_ctx->coded_side_data[i];
    3482             :                 uint8_t *dst_data;
    3483             : 
    3484         183 :                 dst_data = av_stream_new_side_data(ost->st, sd_src->type, sd_src->size);
    3485         183 :                 if (!dst_data)
    3486           0 :                     return AVERROR(ENOMEM);
    3487         183 :                 memcpy(dst_data, sd_src->data, sd_src->size);
    3488             :             }
    3489             :         }
    3490             : 
    3491             :         /*
    3492             :          * Add global input side data. For now this is naive, and copies it
    3493             :          * from the input stream's global side data. All side data should
    3494             :          * really be funneled over AVFrame and libavfilter, then added back to
    3495             :          * packet side data, and then potentially using the first packet for
    3496             :          * global side data.
    3497             :          */
    3498        5123 :         if (ist) {
    3499             :             int i;
    3500        5302 :             for (i = 0; i < ist->st->nb_side_data; i++) {
    3501         209 :                 AVPacketSideData *sd = &ist->st->side_data[i];
    3502         209 :                 uint8_t *dst = av_stream_new_side_data(ost->st, sd->type, sd->size);
    3503         209 :                 if (!dst)
    3504           0 :                     return AVERROR(ENOMEM);
    3505         209 :                 memcpy(dst, sd->data, sd->size);
    3506         209 :                 if (ist->autorotate && sd->type == AV_PKT_DATA_DISPLAYMATRIX)
    3507           0 :                     av_display_rotation_set((uint32_t *)dst, 0);
    3508             :             }
    3509             :         }
    3510             : 
    3511             :         // copy timebase while removing common factors
    3512        5123 :         if (ost->st->time_base.num <= 0 || ost->st->time_base.den <= 0)
    3513        5123 :             ost->st->time_base = av_add_q(ost->enc_ctx->time_base, (AVRational){0, 1});
    3514             : 
    3515             :         // copy estimated duration as a hint to the muxer
    3516        5123 :         if (ost->st->duration <= 0 && ist && ist->st->duration > 0)
    3517        4033 :             ost->st->duration = av_rescale_q(ist->st->duration, ist->st->time_base, ost->st->time_base);
    3518             : 
    3519        5123 :         ost->st->codec->codec= ost->enc_ctx->codec;
    3520         177 :     } else if (ost->stream_copy) {
    3521         176 :         ret = init_output_stream_streamcopy(ost);
    3522         176 :         if (ret < 0)
    3523           0 :             return ret;
    3524             : 
    3525             :         /*
    3526             :          * FIXME: will the codec context used by the parser during streamcopy
    3527             :          * This should go away with the new parser API.
    3528             :          */
    3529         176 :         ret = avcodec_parameters_to_context(ost->parser_avctx, ost->st->codecpar);
    3530         176 :         if (ret < 0)
    3531           0 :             return ret;
    3532             :     }
    3533             : 
    3534             :     // parse user provided disposition, and update stream values
    3535        5300 :     if (ost->disposition) {
    3536             :         static const AVOption opts[] = {
    3537             :             { "disposition"         , NULL, 0, AV_OPT_TYPE_FLAGS, { .i64 = 0 }, INT64_MIN, INT64_MAX, .unit = "flags" },
    3538             :             { "default"             , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_DEFAULT           },    .unit = "flags" },
    3539             :             { "dub"                 , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_DUB               },    .unit = "flags" },
    3540             :             { "original"            , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_ORIGINAL          },    .unit = "flags" },
    3541             :             { "comment"             , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_COMMENT           },    .unit = "flags" },
    3542             :             { "lyrics"              , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_LYRICS            },    .unit = "flags" },
    3543             :             { "karaoke"             , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_KARAOKE           },    .unit = "flags" },
    3544             :             { "forced"              , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_FORCED            },    .unit = "flags" },
    3545             :             { "hearing_impaired"    , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_HEARING_IMPAIRED  },    .unit = "flags" },
    3546             :             { "visual_impaired"     , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_VISUAL_IMPAIRED   },    .unit = "flags" },
    3547             :             { "clean_effects"       , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_CLEAN_EFFECTS     },    .unit = "flags" },
    3548             :             { "captions"            , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_CAPTIONS          },    .unit = "flags" },
    3549             :             { "descriptions"        , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_DESCRIPTIONS      },    .unit = "flags" },
    3550             :             { "metadata"            , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_METADATA          },    .unit = "flags" },
    3551             :             { NULL },
    3552             :         };
    3553             :         static const AVClass class = {
    3554             :             .class_name = "",
    3555             :             .item_name  = av_default_item_name,
    3556             :             .option     = opts,
    3557             :             .version    = LIBAVUTIL_VERSION_INT,
    3558             :         };
    3559           0 :         const AVClass *pclass = &class;
    3560             : 
    3561           0 :         ret = av_opt_eval_flags(&pclass, &opts[0], ost->disposition, &ost->st->disposition);
    3562           0 :         if (ret < 0)
    3563           0 :             return ret;
    3564             :     }
    3565             : 
    3566             :     /* initialize bitstream filters for the output stream
    3567             :      * needs to be done here, because the codec id for streamcopy is not
    3568             :      * known until now */
    3569        5300 :     ret = init_output_bsfs(ost);
    3570        5300 :     if (ret < 0)
    3571           0 :         return ret;
    3572             : 
    3573        5300 :     ost->initialized = 1;
    3574             : 
    3575        5300 :     ret = check_init_output_file(output_files[ost->file_index], ost->file_index);
    3576        5300 :     if (ret < 0)
    3577           0 :         return ret;
    3578             : 
    3579        5300 :     return ret;
    3580             : }
    3581             : 
    3582           0 : static void report_new_stream(int input_index, AVPacket *pkt)
    3583             : {
    3584           0 :     InputFile *file = input_files[input_index];
    3585           0 :     AVStream *st = file->ctx->streams[pkt->stream_index];
    3586             : 
    3587           0 :     if (pkt->stream_index < file->nb_streams_warn)
    3588           0 :         return;
    3589           0 :     av_log(file->ctx, AV_LOG_WARNING,
    3590             :            "New %s stream %d:%d at pos:%"PRId64" and DTS:%ss\n",
    3591           0 :            av_get_media_type_string(st->codecpar->codec_type),
    3592             :            input_index, pkt->stream_index,
    3593           0 :            pkt->pos, av_ts2timestr(pkt->dts, &st->time_base));
    3594           0 :     file->nb_streams_warn = pkt->stream_index + 1;
    3595             : }
    3596             : 
    3597        5167 : static int transcode_init(void)
    3598             : {
    3599        5167 :     int ret = 0, i, j, k;
    3600             :     AVFormatContext *oc;
    3601             :     OutputStream *ost;
    3602             :     InputStream *ist;
    3603        5167 :     char error[1024] = {0};
    3604             : 
    3605       10260 :     for (i = 0; i < nb_filtergraphs; i++) {
    3606        5093 :         FilterGraph *fg = filtergraphs[i];
    3607       10188 :         for (j = 0; j < fg->nb_outputs; j++) {
    3608        5095 :             OutputFilter *ofilter = fg->outputs[j];
    3609        5095 :             if (!ofilter->ost || ofilter->ost->source_index >= 0)
    3610        5049 :                 continue;
    3611          46 :             if (fg->nb_inputs != 1)
    3612          30 :                 continue;
    3613          17 :             for (k = nb_input_streams-1; k >= 0 ; k--)
    3614          17 :                 if (fg->inputs[0]->ist == input_streams[k])
    3615          16 :                     break;
    3616          16 :             ofilter->ost->source_index = k;
    3617             :         }
    3618             :     }
    3619             : 
    3620             :     /* init framerate emulation */
    3621       10393 :     for (i = 0; i < nb_input_files; i++) {
    3622        5226 :         InputFile *ifile = input_files[i];
    3623        5226 :         if (ifile->rate_emu)
    3624           0 :             for (j = 0; j < ifile->nb_streams; j++)
    3625           0 :                 input_streams[j + ifile->ist_index]->start = av_gettime_relative();
    3626             :     }
    3627             : 
    3628             :     /* init input streams */
    3629       10692 :     for (i = 0; i < nb_input_streams; i++)
    3630        5525 :         if ((ret = init_input_stream(i, error, sizeof(error))) < 0) {
    3631           0 :             for (i = 0; i < nb_output_streams; i++) {
    3632           0 :                 ost = output_streams[i];
    3633           0 :                 avcodec_close(ost->enc_ctx);
    3634             :             }
    3635           0 :             goto dump_format;
    3636             :         }
    3637             : 
    3638             :     /* open each encoder */
    3639       10467 :     for (i = 0; i < nb_output_streams; i++) {
    3640             :         // skip streams fed from filtergraphs until we have a frame for them
    3641        5300 :         if (output_streams[i]->filter)
    3642        5095 :             continue;
    3643             : 
    3644         205 :         ret = init_output_stream(output_streams[i], error, sizeof(error));
    3645         205 :         if (ret < 0)
    3646           0 :             goto dump_format;
    3647             :     }
    3648             : 
    3649             :     /* discard unused programs */
    3650       10393 :     for (i = 0; i < nb_input_files; i++) {
    3651        5226 :         InputFile *ifile = input_files[i];
    3652        5251 :         for (j = 0; j < ifile->ctx->nb_programs; j++) {
    3653          25 :             AVProgram *p = ifile->ctx->programs[j];
    3654          25 :             int discard  = AVDISCARD_ALL;
    3655             : 
    3656          25 :             for (k = 0; k < p->nb_stream_indexes; k++)
    3657          25 :                 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
    3658          25 :                     discard = AVDISCARD_DEFAULT;
    3659          25 :                     break;
    3660             :                 }
    3661          25 :             p->discard = discard;
    3662             :         }
    3663             :     }
    3664             : 
    3665             :     /* write headers for files with no streams */
    3666       10335 :     for (i = 0; i < nb_output_files; i++) {
    3667        5168 :         oc = output_files[i]->ctx;
    3668        5168 :         if (oc->oformat->flags & AVFMT_NOSTREAMS && oc->nb_streams == 0) {
    3669           1 :             ret = check_init_output_file(output_files[i], i);
    3670           1 :             if (ret < 0)
    3671           0 :                 goto dump_format;
    3672             :         }
    3673             :     }
    3674             : 
    3675             :  dump_format:
    3676             :     /* dump the stream mapping */
    3677        5167 :     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
    3678       10692 :     for (i = 0; i < nb_input_streams; i++) {
    3679        5525 :         ist = input_streams[i];
    3680             : 
    3681       10630 :         for (j = 0; j < ist->nb_filters; j++) {
    3682        5105 :             if (!filtergraph_is_simple(ist->filters[j]->graph)) {
    3683         224 :                 av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d (%s) -> %s",
    3684         168 :                        ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
    3685          56 :                        ist->filters[j]->name);
    3686          56 :                 if (nb_filtergraphs > 1)
    3687           0 :                     av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
    3688          56 :                 av_log(NULL, AV_LOG_INFO, "\n");
    3689             :             }
    3690             :         }
    3691             :     }
    3692             : 
    3693       10467 :     for (i = 0; i < nb_output_streams; i++) {
    3694        5300 :         ost = output_streams[i];
    3695             : 
    3696        5300 :         if (ost->attachment_filename) {
    3697             :             /* an attached file */
    3698           1 :             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
    3699             :                    ost->attachment_filename, ost->file_index, ost->index);
    3700           1 :             continue;
    3701             :         }
    3702             : 
    3703        5299 :         if (ost->filter && !filtergraph_is_simple(ost->filter->graph)) {
    3704             :             /* output from a complex graph */
    3705          46 :             av_log(NULL, AV_LOG_INFO, "  %s", ost->filter->name);
    3706          46 :             if (nb_filtergraphs > 1)
    3707           0 :                 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
    3708             : 
    3709          92 :             av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
    3710          92 :                    ost->index, ost->enc ? ost->enc->name : "?");
    3711          46 :             continue;
    3712             :         }
    3713             : 
    3714       15759 :         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
    3715        5253 :                input_streams[ost->source_index]->file_index,
    3716        5253 :                input_streams[ost->source_index]->st->index,
    3717             :                ost->file_index,
    3718             :                ost->index);
    3719        5253 :         if (ost->sync_ist != input_streams[ost->source_index])
    3720           0 :             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
    3721           0 :                    ost->sync_ist->file_index,
    3722           0 :                    ost->sync_ist->st->index);
    3723        5253 :         if (ost->stream_copy)
    3724         176 :             av_log(NULL, AV_LOG_INFO, " (copy)");
    3725             :         else {
    3726        5077 :             const AVCodec *in_codec    = input_streams[ost->source_index]->dec;
    3727        5077 :             const AVCodec *out_codec   = ost->enc;
    3728        5077 :             const char *decoder_name   = "?";
    3729        5077 :             const char *in_codec_name  = "?";
    3730        5077 :             const char *encoder_name   = "?";
    3731        5077 :             const char *out_codec_name = "?";
    3732             :             const AVCodecDescriptor *desc;
    3733             : 
    3734        5077 :             if (in_codec) {
    3735        5077 :                 decoder_name  = in_codec->name;
    3736        5077 :                 desc = avcodec_descriptor_get(in_codec->id);
    3737        5077 :                 if (desc)
    3738        5077 :                     in_codec_name = desc->name;
    3739        5077 :                 if (!strcmp(decoder_name, in_codec_name))
    3740        4926 :                     decoder_name = "native";
    3741             :             }
    3742             : 
    3743        5077 :             if (out_codec) {
    3744        5077 :                 encoder_name   = out_codec->name;
    3745        5077 :                 desc = avcodec_descriptor_get(out_codec->id);
    3746        5077 :                 if (desc)
    3747        5077 :                     out_codec_name = desc->name;
    3748        5077 :                 if (!strcmp(encoder_name, out_codec_name))
    3749        4991 :                     encoder_name = "native";
    3750             :             }
    3751             : 
    3752        5077 :             av_log(NULL, AV_LOG_INFO, " (%s (%s) -> %s (%s))",
    3753             :                    in_codec_name, decoder_name,
    3754             :                    out_codec_name, encoder_name);
    3755             :         }
    3756        5253 :         av_log(NULL, AV_LOG_INFO, "\n");
    3757             :     }
    3758             : 
    3759        5167 :     if (ret) {
    3760           0 :         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
    3761           0 :         return ret;
    3762             :     }
    3763             : 
    3764        5167 :     atomic_store(&transcode_init_done, 1);
    3765             : 
    3766        5167 :     return 0;
    3767             : }
    3768             : 
    3769             : /* Return 1 if there remain streams where more output is wanted, 0 otherwise. */
    3770     2618450 : static int need_output(void)
    3771             : {
    3772             :     int i;
    3773             : 
    3774     2623912 :     for (i = 0; i < nb_output_streams; i++) {
    3775     2618745 :         OutputStream *ost    = output_streams[i];
    3776     2618745 :         OutputFile *of       = output_files[ost->file_index];
    3777     2618745 :         AVFormatContext *os  = output_files[ost->file_index]->ctx;
    3778             : 
    3779     5233930 :         if (ost->finished ||
    3780     5226987 :             (os->pb && avio_tell(os->pb) >= of->limit_filesize))
    3781        3560 :             continue;
    3782     2615185 :         if (ost->frame_number >= ost->max_frames) {
    3783             :             int j;
    3784        3806 :             for (j = 0; j < of->ctx->nb_streams; j++)
    3785        1904 :                 close_output_stream(output_streams[of->ost_index + j]);
    3786        1902 :             continue;
    3787             :         }
    3788             : 
    3789     2613283 :         return 1;
    3790             :     }
    3791             : 
    3792        5167 :     return 0;
    3793             : }
    3794             : 
    3795             : /**
    3796             :  * Select the output stream to process.
    3797             :  *
    3798             :  * @return  selected output stream, or NULL if none available
    3799             :  */
    3800     2613283 : static OutputStream *choose_output(void)
    3801             : {
    3802             :     int i;
    3803     2613283 :     int64_t opts_min = INT64_MAX;
    3804     2613283 :     OutputStream *ost_min = NULL;
    3805             : 
    3806     3009751 :     for (i = 0; i < nb_output_streams; i++) {
    3807     2626321 :         OutputStream *ost = output_streams[i];
    3808     3020872 :         int64_t opts = ost->st->cur_dts == AV_NOPTS_VALUE ? INT64_MIN :
    3809      394551 :                        av_rescale_q(ost->st->cur_dts, ost->st->time_base,
    3810      394551 :                                     AV_TIME_BASE_Q);
    3811     2626321 :         if (ost->st->cur_dts == AV_NOPTS_VALUE)
    3812     2231770 :             av_log(NULL, AV_LOG_DEBUG, "cur_dts is invalid (this is harmless if it occurs once at the start per stream)\n");
    3813             : 
    3814     2626321 :         if (!ost->initialized && !ost->inputs_done)
    3815     2229853 :             return ost;
    3816             : 
    3817      396468 :         if (!ost->finished && opts < opts_min) {
    3818      388101 :             opts_min = opts;
    3819      388101 :             ost_min  = ost->unavailable ? NULL : ost;
    3820             :         }
    3821             :     }
    3822      383430 :     return ost_min;
    3823             : }
    3824             : 
    3825           0 : static void set_tty_echo(int on)
    3826             : {
    3827             : #if HAVE_TERMIOS_H
    3828             :     struct termios tty;
    3829           0 :     if (tcgetattr(0, &tty) == 0) {
    3830           0 :         if (on) tty.c_lflag |= ECHO;
    3831           0 :         else    tty.c_lflag &= ~ECHO;
    3832           0 :         tcsetattr(0, TCSANOW, &tty);
    3833             :     }
    3834             : #endif
    3835           0 : }
    3836             : 
    3837        3269 : static int check_keyboard_interaction(int64_t cur_time)
    3838             : {
    3839             :     int i, ret, key;
    3840             :     static int64_t last_time;
    3841        3269 :     if (received_nb_signals)
    3842           0 :         return AVERROR_EXIT;
    3843             :     /* read_key() returns 0 on EOF */
    3844        3269 :     if(cur_time - last_time >= 100000 && !run_as_daemon){
    3845          23 :         key =  read_key();
    3846          23 :         last_time = cur_time;
    3847             :     }else
    3848        3246 :         key = -1;
    3849        3269 :     if (key == 'q')
    3850           0 :         return AVERROR_EXIT;
    3851        3269 :     if (key == '+') av_log_set_level(av_log_get_level()+10);
    3852        3269 :     if (key == '-') av_log_set_level(av_log_get_level()-10);
    3853        3269 :     if (key == 's') qp_hist     ^= 1;
    3854        3269 :     if (key == 'h'){
    3855           0 :         if (do_hex_dump){
    3856           0 :             do_hex_dump = do_pkt_dump = 0;
    3857           0 :         } else if(do_pkt_dump){
    3858           0 :             do_hex_dump = 1;
    3859             :         } else
    3860           0 :             do_pkt_dump = 1;
    3861           0 :         av_log_set_level(AV_LOG_DEBUG);
    3862             :     }
    3863        3269 :     if (key == 'c' || key == 'C'){
    3864           0 :         char buf[4096], target[64], command[256], arg[256] = {0};
    3865             :         double time;
    3866           0 :         int k, n = 0;
    3867           0 :         fprintf(stderr, "\nEnter command: <target>|all <time>|-1 <command>[ <argument>]\n");
    3868           0 :         i = 0;
    3869           0 :         set_tty_echo(1);
    3870           0 :         while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
    3871           0 :             if (k > 0)
    3872           0 :                 buf[i++] = k;
    3873           0 :         buf[i] = 0;
    3874           0 :         set_tty_echo(0);
    3875           0 :         fprintf(stderr, "\n");
    3876           0 :         if (k > 0 &&
    3877             :             (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
    3878           0 :             av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
    3879             :                    target, time, command, arg);
    3880           0 :             for (i = 0; i < nb_filtergraphs; i++) {
    3881           0 :                 FilterGraph *fg = filtergraphs[i];
    3882           0 :                 if (fg->graph) {
    3883           0 :                     if (time < 0) {
    3884           0 :                         ret = avfilter_graph_send_command(fg->graph, target, command, arg, buf, sizeof(buf),
    3885             :                                                           key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
    3886           0 :                         fprintf(stderr, "Command reply for stream %d: ret:%d res:\n%s", i, ret, buf);
    3887           0 :                     } else if (key == 'c') {
    3888           0 :                         fprintf(stderr, "Queuing commands only on filters supporting the specific command is unsupported\n");
    3889           0 :                         ret = AVERROR_PATCHWELCOME;
    3890             :                     } else {
    3891           0 :                         ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
    3892           0 :                         if (ret < 0)
    3893           0 :                             fprintf(stderr, "Queuing command failed with error %s\n", av_err2str(ret));
    3894             :                     }
    3895             :                 }
    3896             :             }
    3897             :         } else {
    3898           0 :             av_log(NULL, AV_LOG_ERROR,
    3899             :                    "Parse error, at least 3 arguments were expected, "
    3900             :                    "only %d given in string '%s'\n", n, buf);
    3901             :         }
    3902             :     }
    3903        3269 :     if (key == 'd' || key == 'D'){
    3904           0 :         int debug=0;
    3905           0 :         if(key == 'D') {
    3906           0 :             debug = input_streams[0]->st->codec->debug<<1;
    3907           0 :             if(!debug) debug = 1;
    3908           0 :             while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
    3909           0 :                 debug += debug;
    3910             :         }else{
    3911             :             char buf[32];
    3912           0 :             int k = 0;
    3913           0 :             i = 0;
    3914           0 :             set_tty_echo(1);
    3915           0 :             while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
    3916           0 :                 if (k > 0)
    3917           0 :                     buf[i++] = k;
    3918           0 :             buf[i] = 0;
    3919           0 :             set_tty_echo(0);
    3920           0 :             fprintf(stderr, "\n");
    3921           0 :             if (k <= 0 || sscanf(buf, "%d", &debug)!=1)
    3922           0 :                 fprintf(stderr,"error parsing debug value\n");
    3923             :         }
    3924           0 :         for(i=0;i<nb_input_streams;i++) {
    3925           0 :             input_streams[i]->st->codec->debug = debug;
    3926             :         }
    3927           0 :         for(i=0;i<nb_output_streams;i++) {
    3928           0 :             OutputStream *ost = output_streams[i];
    3929           0 :             ost->enc_ctx->debug = debug;
    3930             :         }
    3931           0 :         if(debug) av_log_set_level(AV_LOG_DEBUG);
    3932           0 :         fprintf(stderr,"debug=%d\n", debug);
    3933             :     }
    3934        3269 :     if (key == '?'){
    3935           0 :         fprintf(stderr, "key    function\n"
    3936             :                         "?      show this help\n"
    3937             :                         "+      increase verbosity\n"
    3938             :                         "-      decrease verbosity\n"
    3939             :                         "c      Send command to first matching filter supporting it\n"
    3940             :                         "C      Send/Queue command to all matching filters\n"
    3941             :                         "D      cycle through available debug modes\n"
    3942             :                         "h      dump packets/hex press to cycle through the 3 states\n"
    3943             :                         "q      quit\n"
    3944             :                         "s      Show QP histogram\n"
    3945             :         );
    3946             :     }
    3947        3269 :     return 0;
    3948             : }
    3949             : 
    3950             : #if HAVE_PTHREADS
    3951         133 : static void *input_thread(void *arg)
    3952             : {
    3953         133 :     InputFile *f = arg;
    3954         133 :     unsigned flags = f->non_blocking ? AV_THREAD_MESSAGE_NONBLOCK : 0;
    3955         133 :     int ret = 0;
    3956             : 
    3957        6413 :     while (1) {
    3958             :         AVPacket pkt;
    3959        6546 :         ret = av_read_frame(f->ctx, &pkt);
    3960             : 
    3961        6548 :         if (ret == AVERROR(EAGAIN)) {
    3962           0 :             av_usleep(10000);
    3963           0 :             continue;
    3964             :         }
    3965        6548 :         if (ret < 0) {
    3966          44 :             av_thread_message_queue_set_err_recv(f->in_thread_queue, ret);
    3967          44 :             break;
    3968             :         }
    3969        6504 :         ret = av_thread_message_queue_send(f->in_thread_queue, &pkt, flags);
    3970        6502 :         if (flags && ret == AVERROR(EAGAIN)) {
    3971          56 :             flags = 0;
    3972          56 :             ret = av_thread_message_queue_send(f->in_thread_queue, &pkt, flags);
    3973          56 :             av_log(f->ctx, AV_LOG_WARNING,
    3974             :                    "Thread message queue blocking; consider raising the "
    3975             :                    "thread_queue_size option (current value: %d)\n",
    3976             :                    f->thread_queue_size);
    3977             :         }
    3978        6502 :         if (ret < 0) {
    3979          89 :             if (ret != AVERROR_EOF)
    3980           0 :                 av_log(f->ctx, AV_LOG_ERROR,
    3981             :                        "Unable to send packet to main thread: %s\n",
    3982           0 :                        av_err2str(ret));
    3983          89 :             av_packet_unref(&pkt);
    3984          89 :             av_thread_message_queue_set_err_recv(f->in_thread_queue, ret);
    3985          89 :             break;
    3986             :         }
    3987             :     }
    3988             : 
    3989         266 :     return NULL;
    3990             : }
    3991             : 
    3992       15502 : static void free_input_threads(void)
    3993             : {
    3994             :     int i;
    3995             : 
    3996       31180 :     for (i = 0; i < nb_input_files; i++) {
    3997       15678 :         InputFile *f = input_files[i];
    3998             :         AVPacket pkt;
    3999             : 
    4000       15678 :         if (!f || !f->in_thread_queue)
    4001       15545 :             continue;
    4002         133 :         av_thread_message_queue_set_err_send(f->in_thread_queue, AVERROR_EOF);
    4003         965 :         while (av_thread_message_queue_recv(f->in_thread_queue, &pkt, 0) >= 0)
    4004         699 :             av_packet_unref(&pkt);
    4005             : 
    4006         133 :         pthread_join(f->thread, NULL);
    4007         133 :         f->joined = 1;
    4008         133 :         av_thread_message_queue_free(&f->in_thread_queue);
    4009             :     }
    4010       15502 : }
    4011             : 
    4012        5167 : static int init_input_threads(void)
    4013             : {
    4014             :     int i, ret;
    4015             : 
    4016        5167 :     if (nb_input_files == 1)
    4017        5093 :         return 0;
    4018             : 
    4019         207 :     for (i = 0; i < nb_input_files; i++) {
    4020         133 :         InputFile *f = input_files[i];
    4021             : 
    4022         190 :         if (f->ctx->pb ? !f->ctx->pb->seekable :
    4023          57 :             strcmp(f->ctx->iformat->name, "lavfi"))
    4024          56 :             f->non_blocking = 1;
    4025         133 :         ret = av_thread_message_queue_alloc(&f->in_thread_queue,
    4026         133 :                                             f->thread_queue_size, sizeof(AVPacket));
    4027         133 :         if (ret < 0)
    4028           0 :             return ret;
    4029             : 
    4030         133 :         if ((ret = pthread_create(&f->thread, NULL, input_thread, f))) {
    4031           0 :             av_log(NULL, AV_LOG_ERROR, "pthread_create failed: %s. Try to increase `ulimit -v` or decrease `ulimit -s`.\n", strerror(ret));
    4032           0 :             av_thread_message_queue_free(&f->in_thread_queue);
    4033           0 :             return AVERROR(ret);
    4034             :         }
    4035             :     }
    4036          74 :     return 0;
    4037             : }
    4038             : 
    4039     2227726 : static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
    4040             : {
    4041     2227726 :     return av_thread_message_queue_recv(f->in_thread_queue, pkt,
    4042     2227726 :                                         f->non_blocking ?
    4043             :                                         AV_THREAD_MESSAGE_NONBLOCK : 0);
    4044             : }
    4045             : #endif
    4046             : 
    4047     2609131 : static int get_input_packet(InputFile *f, AVPacket *pkt)
    4048             : {
    4049     2609131 :     if (f->rate_emu) {
    4050             :         int i;
    4051           0 :         for (i = 0; i < f->nb_streams; i++) {
    4052           0 :             InputStream *ist = input_streams[f->ist_index + i];
    4053           0 :             int64_t pts = av_rescale(ist->dts, 1000000, AV_TIME_BASE);
    4054           0 :             int64_t now = av_gettime_relative() - ist->start;
    4055           0 :             if (pts > now)
    4056           0 :                 return AVERROR(EAGAIN);
    4057             :         }
    4058             :     }
    4059             : 
    4060             : #if HAVE_PTHREADS
    4061     2609131 :     if (nb_input_files > 1)
    4062     2227726 :         return get_input_packet_mt(f, pkt);
    4063             : #endif
    4064      381405 :     return av_read_frame(f->ctx, pkt);
    4065             : }
    4066             : 
    4067           2 : static int got_eagain(void)
    4068             : {
    4069             :     int i;
    4070           2 :     for (i = 0; i < nb_output_streams; i++)
    4071           2 :         if (output_streams[i]->unavailable)
    4072           2 :             return 1;
    4073           0 :     return 0;
    4074             : }
    4075             : 
    4076      383753 : static void reset_eagain(void)
    4077             : {
    4078             :     int i;
    4079      773742 :     for (i = 0; i < nb_input_files; i++)
    4080      389989 :         input_files[i]->eagain = 0;
    4081      780541 :     for (i = 0; i < nb_output_streams; i++)
    4082      396788 :         output_streams[i]->unavailable = 0;
    4083      383753 : }
    4084             : 
    4085             : // set duration to max(tmp, duration) in a proper time base and return duration's time_base
    4086           0 : static AVRational duration_max(int64_t tmp, int64_t *duration, AVRational tmp_time_base,
    4087             :                                 AVRational time_base)
    4088             : {
    4089             :     int ret;
    4090             : 
    4091           0 :     if (!*duration) {
    4092           0 :         *duration = tmp;
    4093           0 :         return tmp_time_base;
    4094             :     }
    4095             : 
    4096           0 :     ret = av_compare_ts(*duration, time_base, tmp, tmp_time_base);
    4097           0 :     if (ret < 0) {
    4098           0 :         *duration = tmp;
    4099           0 :         return tmp_time_base;
    4100             :     }
    4101             : 
    4102           0 :     return time_base;
    4103             : }
    4104             : 
    4105           0 : static int seek_to_start(InputFile *ifile, AVFormatContext *is)
    4106             : {
    4107             :     InputStream *ist;
    4108             :     AVCodecContext *avctx;
    4109           0 :     int i, ret, has_audio = 0;
    4110           0 :     int64_t duration = 0;
    4111             : 
    4112           0 :     ret = av_seek_frame(is, -1, is->start_time, 0);
    4113           0 :     if (ret < 0)
    4114           0 :         return ret;
    4115             : 
    4116           0 :     for (i = 0; i < ifile->nb_streams; i++) {
    4117           0 :         ist   = input_streams[ifile->ist_index + i];
    4118           0 :         avctx = ist->dec_ctx;
    4119             : 
    4120             :         // flush decoders
    4121           0 :         if (ist->decoding_needed) {
    4122           0 :             process_input_packet(ist, NULL, 1);
    4123           0 :             avcodec_flush_buffers(avctx);
    4124             :         }
    4125             : 
    4126             :         /* duration is the length of the last frame in a stream
    4127             :          * when audio stream is present we don't care about
    4128             :          * last video frame length because it's not defined exactly */
    4129           0 :         if (avctx->codec_type == AVMEDIA_TYPE_AUDIO && ist->nb_samples)
    4130           0 :             has_audio = 1;
    4131             :     }
    4132             : 
    4133           0 :     for (i = 0; i < ifile->nb_streams; i++) {
    4134           0 :         ist   = input_streams[ifile->ist_index + i];
    4135           0 :         avctx = ist->dec_ctx;
    4136             : 
    4137           0 :         if (has_audio) {
    4138           0 :             if (avctx->codec_type == AVMEDIA_TYPE_AUDIO && ist->nb_samples) {
    4139           0 :                 AVRational sample_rate = {1, avctx->sample_rate};
    4140             : 
    4141           0 :                 duration = av_rescale_q(ist->nb_samples, sample_rate, ist->st->time_base);
    4142             :             } else
    4143           0 :                 continue;
    4144             :         } else {
    4145           0 :             if (ist->framerate.num) {
    4146           0 :                 duration = av_rescale_q(1, ist->framerate, ist->st->time_base);
    4147           0 :             } else if (ist->st->avg_frame_rate.num) {
    4148           0 :                 duration = av_rescale_q(1, ist->st->avg_frame_rate, ist->st->time_base);
    4149           0 :             } else duration = 1;
    4150             :         }
    4151           0 :         if (!ifile->duration)
    4152           0 :             ifile->time_base = ist->st->time_base;
    4153             :         /* the total duration of the stream, max_pts - min_pts is
    4154             :          * the duration of the stream without the last frame */
    4155           0 :         duration += ist->max_pts - ist->min_pts;
    4156           0 :         ifile->time_base = duration_max(duration, &ifile->duration, ist->st->time_base,
    4157             :                                         ifile->time_base);
    4158             :     }
    4159             : 
    4160           0 :     if (ifile->loop > 0)
    4161           0 :         ifile->loop--;
    4162             : 
    4163           0 :     return ret;
    4164             : }
    4165             : 
    4166             : /*
    4167             :  * Return
    4168             :  * - 0 -- one packet was read and processed
    4169             :  * - AVERROR(EAGAIN) -- no packets were available for selected file,
    4170             :  *   this function should be called again
    4171             :  * - AVERROR_EOF -- this function should not be called again
    4172             :  */
    4173     2609131 : static int process_input(int file_index)
    4174             : {
    4175     2609131 :     InputFile *ifile = input_files[file_index];
    4176             :     AVFormatContext *is;
    4177             :     InputStream *ist;
    4178             :     AVPacket pkt;
    4179             :     int ret, i, j;
    4180             :     int64_t duration;
    4181             :     int64_t pkt_dts;
    4182             : 
    4183     2609131 :     is  = ifile->ctx;
    4184     2609131 :     ret = get_input_packet(ifile, &pkt);
    4185             : 
    4186     2609131 :     if (ret == AVERROR(EAGAIN)) {
    4187     2221970 :         ifile->eagain = 1;
    4188     2221970 :         return ret;
    4189             :     }
    4190      387161 :     if (ret < 0 && ifile->loop) {
    4191           0 :         if ((ret = seek_to_start(ifile, is)) < 0)
    4192           0 :             return ret;
    4193           0 :         ret = get_input_packet(ifile, &pkt);
    4194           0 :         if (ret == AVERROR(EAGAIN)) {
    4195           0 :             ifile->eagain = 1;
    4196           0 :             return ret;
    4197             :         }
    4198             :     }
    4199      387161 :     if (ret < 0) {
    4200        3410 :         if (ret != AVERROR_EOF) {
    4201          75 :             print_error(is->filename, ret);
    4202          75 :             if (exit_on_error)
    4203           0 :                 exit_program(1);
    4204             :         }
    4205             : 
    4206        6493 :         for (i = 0; i < ifile->nb_streams; i++) {
    4207        3670 :             ist = input_streams[ifile->ist_index + i];
    4208        3670 :             if (ist->decoding_needed) {
    4209        3333 :                 ret = process_input_packet(ist, NULL, 0);
    4210        3333 :                 if (ret>0)
    4211         587 :                     return 0;
    4212             :             }
    4213             : 
    4214             :             /* mark all outputs that don't go through lavfi as finished */
    4215        6419 :             for (j = 0; j < nb_output_streams; j++) {
    4216        3336 :                 OutputStream *ost = output_streams[j];
    4217             : 
    4218        6222 :                 if (ost->source_index == ifile->ist_index + i &&
    4219        5608 :                     (ost->stream_copy || ost->enc->type == AVMEDIA_TYPE_SUBTITLE))
    4220         192 :                     finish_output_stream(ost);
    4221             :             }
    4222             :         }
    4223             : 
    4224        2823 :         ifile->eof_reached = 1;
    4225        2823 :         return AVERROR(EAGAIN);
    4226             :     }
    4227             : 
    4228      383751 :     reset_eagain();
    4229             : 
    4230      383751 :     if (do_pkt_dump) {
    4231           0 :         av_pkt_dump_log2(NULL, AV_LOG_INFO, &pkt, do_hex_dump,
    4232           0 :                          is->streams[pkt.stream_index]);
    4233             :     }
    4234             :     /* the following test is needed in case new streams appear
    4235             :        dynamically in stream : we ignore them */
    4236      383751 :     if (pkt.stream_index >= ifile->nb_streams) {
    4237           0 :         report_new_stream(file_index, &pkt);
    4238           0 :         goto discard_packet;
    4239             :     }
    4240             : 
    4241      383751 :     ist = input_streams[ifile->ist_index + pkt.stream_index];
    4242             : 
    4243      383751 :     ist->data_size += pkt.size;
    4244      383751 :     ist->nb_packets++;
    4245             : 
    4246      383751 :     if (ist->discard)
    4247        7344 :         goto discard_packet;
    4248             : 
    4249      376407 :     if (exit_on_error && (pkt.flags & AV_PKT_FLAG_CORRUPT)) {
    4250           0 :         av_log(NULL, AV_LOG_FATAL, "%s: corrupt input packet in stream %d\n", is->filename, pkt.stream_index);
    4251           0 :         exit_program(1);
    4252             :     }
    4253             : 
    4254      376407 :     if (debug_ts) {
    4255           0 :         av_log(NULL, AV_LOG_INFO, "demuxer -> ist_index:%d type:%s "
    4256             :                "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",
    4257           0 :                ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->dec_ctx->codec_type),
    4258           0 :                av_ts2str(ist->next_dts), av_ts2timestr(ist->next_dts, &AV_TIME_BASE_Q),
    4259           0 :                av_ts2str(ist->next_pts), av_ts2timestr(ist->next_pts, &AV_TIME_BASE_Q),
    4260           0 :                av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
    4261           0 :                av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
    4262           0 :                av_ts2str(input_files[ist->file_index]->ts_offset),
    4263           0 :                av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
    4264             :     }
    4265             : 
    4266      376407 :     if(!ist->wrap_correction_done && is->start_time != AV_NOPTS_VALUE && ist->st->pts_wrap_bits < 64){
    4267             :         int64_t stime, stime2;
    4268             :         // Correcting starttime based on the enabled streams
    4269             :         // 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.
    4270             :         //       so we instead do it here as part of discontinuity handling
    4271         225 :         if (   ist->next_dts == AV_NOPTS_VALUE
    4272         225 :             && ifile->ts_offset == -is->start_time
    4273         223 :             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
    4274          40 :             int64_t new_start_time = INT64_MAX;
    4275         111 :             for (i=0; i<is->nb_streams; i++) {
    4276          71 :                 AVStream *st = is->streams[i];
    4277          71 :                 if(st->discard == AVDISCARD_ALL || st->start_time == AV_NOPTS_VALUE)
    4278          13 :                     continue;
    4279          58 :                 new_start_time = FFMIN(new_start_time, av_rescale_q(st->start_time, st->time_base, AV_TIME_BASE_Q));
    4280             :             }
    4281          40 :             if (new_start_time > is->start_time) {
    4282           3 :                 av_log(is, AV_LOG_VERBOSE, "Correcting start time by %"PRId64"\n", new_start_time - is->start_time);
    4283           3 :                 ifile->ts_offset = -new_start_time;
    4284             :             }
    4285             :         }
    4286             : 
    4287         225 :         stime = av_rescale_q(is->start_time, AV_TIME_BASE_Q, ist->st->time_base);
    4288         225 :         stime2= stime + (1ULL<<ist->st->pts_wrap_bits);
    4289         225 :         ist->wrap_correction_done = 1;
    4290             : 
    4291         225 :         if(stime2 > stime && pkt.dts != AV_NOPTS_VALUE && pkt.dts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
    4292           0 :             pkt.dts -= 1ULL<<ist->st->pts_wrap_bits;
    4293           0 :             ist->wrap_correction_done = 0;
    4294             :         }
    4295         225 :         if(stime2 > stime && pkt.pts != AV_NOPTS_VALUE && pkt.pts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
    4296           0 :             pkt.pts -= 1ULL<<ist->st->pts_wrap_bits;
    4297           0 :             ist->wrap_correction_done = 0;
    4298             :         }
    4299             :     }
    4300             : 
    4301             :     /* add the stream-global side data to the first packet */
    4302      376407 :     if (ist->nb_packets == 1) {
    4303        5499 :         for (i = 0; i < ist->st->nb_side_data; i++) {
    4304         212 :             AVPacketSideData *src_sd = &ist->st->side_data[i];
    4305             :             uint8_t *dst_data;
    4306             : 
    4307         212 :             if (src_sd->type == AV_PKT_DATA_DISPLAYMATRIX)
    4308           1 :                 continue;
    4309             : 
    4310         211 :             if (av_packet_get_side_data(&pkt, src_sd->type, NULL))
    4311           0 :                 continue;
    4312             : 
    4313         211 :             dst_data = av_packet_new_side_data(&pkt, src_sd->type, src_sd->size);
    4314         211 :             if (!dst_data)
    4315           0 :                 exit_program(1);
    4316             : 
    4317         211 :             memcpy(dst_data, src_sd->data, src_sd->size);
    4318             :         }
    4319             :     }
    4320             : 
    4321      376407 :     if (pkt.dts != AV_NOPTS_VALUE)
    4322      345167 :         pkt.dts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
    4323      376407 :     if (pkt.pts != AV_NOPTS_VALUE)
    4324      343084 :         pkt.pts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
    4325             : 
    4326      376407 :     if (pkt.pts != AV_NOPTS_VALUE)
    4327      343084 :         pkt.pts *= ist->ts_scale;
    4328      376407 :     if (pkt.dts != AV_NOPTS_VALUE)
    4329      345167 :         pkt.dts *= ist->ts_scale;
    4330             : 
    4331      376407 :     pkt_dts = av_rescale_q_rnd(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q, AV_ROUND_NEAR_INF|AV_ROUND_PASS_MINMAX);
    4332      649385 :     if ((ist->dec_ctx->codec_type == AVMEDIA_TYPE_VIDEO ||
    4333      647941 :          ist->dec_ctx->codec_type == AVMEDIA_TYPE_AUDIO) &&
    4334      343725 :         pkt_dts != AV_NOPTS_VALUE && ist->next_dts == AV_NOPTS_VALUE && !copy_ts
    4335        5258 :         && (is->iformat->flags & AVFMT_TS_DISCONT) && ifile->last_ts != AV_NOPTS_VALUE) {
    4336          77 :         int64_t delta   = pkt_dts - ifile->last_ts;
    4337         154 :         if (delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
    4338          77 :             delta >  1LL*dts_delta_threshold*AV_TIME_BASE){
    4339           0 :             ifile->ts_offset -= delta;
    4340           0 :             av_log(NULL, AV_LOG_DEBUG,
    4341             :                    "Inter stream timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
    4342             :                    delta, ifile->ts_offset);
    4343           0 :             pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
    4344           0 :             if (pkt.pts != AV_NOPTS_VALUE)
    4345           0 :                 pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
    4346             :         }
    4347             :     }
    4348             : 
    4349      376407 :     duration = av_rescale_q(ifile->duration, ifile->time_base, ist->st->time_base);
    4350      376407 :     if (pkt.pts != AV_NOPTS_VALUE) {
    4351      343084 :         pkt.pts += duration;
    4352      343084 :         ist->max_pts = FFMAX(pkt.pts, ist->max_pts);
    4353      343084 :         ist->min_pts = FFMIN(pkt.pts, ist->min_pts);
    4354             :     }
    4355             : 
    4356      376407 :     if (pkt.dts != AV_NOPTS_VALUE)
    4357      345167 :         pkt.dts += duration;
    4358             : 
    4359      376407 :     pkt_dts = av_rescale_q_rnd(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q, AV_ROUND_NEAR_INF|AV_ROUND_PASS_MINMAX);
    4360      649385 :     if ((ist->dec_ctx->codec_type == AVMEDIA_TYPE_VIDEO ||
    4361      647941 :          ist->dec_ctx->codec_type == AVMEDIA_TYPE_AUDIO) &&
    4362      682191 :          pkt_dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE &&
    4363      338466 :         !copy_ts) {
    4364      338393 :         int64_t delta   = pkt_dts - ist->next_dts;
    4365      338393 :         if (is->iformat->flags & AVFMT_TS_DISCONT) {
    4366       27286 :             if (delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
    4367       27286 :                 delta >  1LL*dts_delta_threshold*AV_TIME_BASE ||
    4368       13643 :                 pkt_dts + AV_TIME_BASE/10 < FFMAX(ist->pts, ist->dts)) {
    4369           8 :                 ifile->ts_offset -= delta;
    4370           8 :                 av_log(NULL, AV_LOG_DEBUG,
    4371             :                        "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
    4372             :                        delta, ifile->ts_offset);
    4373           8 :                 pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
    4374           8 :                 if (pkt.pts != AV_NOPTS_VALUE)
    4375           8 :                     pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
    4376             :             }
    4377             :         } else {
    4378      649500 :             if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
    4379      324750 :                  delta >  1LL*dts_error_threshold*AV_TIME_BASE) {
    4380           0 :                 av_log(NULL, AV_LOG_WARNING, "DTS %"PRId64", next:%"PRId64" st:%d invalid dropping\n", pkt.dts, ist->next_dts, pkt.stream_index);
    4381           0 :                 pkt.dts = AV_NOPTS_VALUE;
    4382             :             }
    4383      324750 :             if (pkt.pts != AV_NOPTS_VALUE){
    4384      322726 :                 int64_t pkt_pts = av_rescale_q(pkt.pts, ist->st->time_base, AV_TIME_BASE_Q);
    4385      322726 :                 delta   = pkt_pts - ist->next_dts;
    4386      645452 :                 if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
    4387      322726 :                      delta >  1LL*dts_error_threshold*AV_TIME_BASE) {
    4388           0 :                     av_log(NULL, AV_LOG_WARNING, "PTS %"PRId64", next:%"PRId64" invalid dropping st:%d\n", pkt.pts, ist->next_dts, pkt.stream_index);
    4389           0 :                     pkt.pts = AV_NOPTS_VALUE;
    4390             :                 }
    4391             :             }
    4392             :         }
    4393             :     }
    4394             : 
    4395      376407 :     if (pkt.dts != AV_NOPTS_VALUE)
    4396      345167 :         ifile->last_ts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
    4397             : 
    4398      376407 :     if (debug_ts) {
    4399           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",
    4400           0 :                ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->dec_ctx->codec_type),
    4401           0 :                av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
    4402           0 :                av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
    4403           0 :                av_ts2str(input_files[ist->file_index]->ts_offset),
    4404           0 :                av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
    4405             :     }
    4406             : 
    4407      376407 :     sub2video_heartbeat(ist, pkt.pts);
    4408             : 
    4409      376407 :     process_input_packet(ist, &pkt, 0);
    4410             : 
    4411             : discard_packet:
    4412      383751 :     av_packet_unref(&pkt);
    4413             : 
    4414      383751 :     return 0;
    4415             : }
    4416             : 
    4417             : /**
    4418             :  * Perform a step of transcoding for the specified filter graph.
    4419             :  *
    4420             :  * @param[in]  graph     filter graph to consider
    4421             :  * @param[out] best_ist  input stream where a frame would allow to continue
    4422             :  * @return  0 for success, <0 for error
    4423             :  */
    4424      362736 : static int transcode_from_filter(FilterGraph *graph, InputStream **best_ist)
    4425             : {
    4426             :     int i, ret;
    4427      362736 :     int nb_requests, nb_requests_max = 0;
    4428             :     InputFilter *ifilter;
    4429             :     InputStream *ist;
    4430             : 
    4431      362736 :     *best_ist = NULL;
    4432      362736 :     ret = avfilter_graph_request_oldest(graph->graph);
    4433      362736 :     if (ret >= 0)
    4434         957 :         return reap_filters(0);
    4435             : 
    4436      361779 :     if (ret == AVERROR_EOF) {
    4437        3193 :         ret = reap_filters(1);
    4438        6388 :         for (i = 0; i < graph->nb_outputs; i++)
    4439        3195 :             close_output_stream(graph->outputs[i]->ost);
    4440        3193 :         return ret;
    4441             :     }
    4442      358586 :     if (ret != AVERROR(EAGAIN))
    4443           0 :         return ret;
    4444             : 
    4445      721902 :     for (i = 0; i < graph->nb_inputs; i++) {
    4446      363316 :         ifilter = graph->inputs[i];
    4447      363316 :         ist = ifilter->ist;
    4448      726632 :         if (input_files[ist->file_index]->eagain ||
    4449      363316 :             input_files[ist->file_index]->eof_reached)
    4450        1114 :             continue;
    4451      362202 :         nb_requests = av_buffersrc_get_nb_failed_requests(ifilter->filter);
    4452      362202 :         if (nb_requests > nb_requests_max) {
    4453      358586 :             nb_requests_max = nb_requests;
    4454      358586 :             *best_ist = ist;
    4455             :         }
    4456             :     }
    4457             : 
    4458      358586 :     if (!*best_ist)
    4459           0 :         for (i = 0; i < graph->nb_outputs; i++)
    4460           0 :             graph->outputs[i]->ost->unavailable = 1;
    4461             : 
    4462      358586 :     return 0;
    4463             : }
    4464             : 
    4465             : /**
    4466             :  * Run a single step of transcoding.
    4467             :  *
    4468             :  * @return  0 for success, <0 for error
    4469             :  */
    4470     2613283 : static int transcode_step(void)
    4471             : {
    4472             :     OutputStream *ost;
    4473     2613283 :     InputStream  *ist = NULL;
    4474             :     int ret;
    4475             : 
    4476     2613283 :     ost = choose_output();
    4477     2613283 :     if (!ost) {
    4478           2 :         if (got_eagain()) {
    4479           2 :             reset_eagain();
    4480           2 :             av_usleep(10000);
    4481           2 :             return 0;
    4482             :         }
    4483           0 :         av_log(NULL, AV_LOG_VERBOSE, "No more inputs to read from, finishing.\n");
    4484           0 :         return AVERROR_EOF;
    4485             :     }
    4486             : 
    4487     2613281 :     if (ost->filter && !ost->filter->graph->graph) {
    4488     2229853 :         if (ifilter_has_all_input_formats(ost->filter->graph)) {
    4489           9 :             ret = configure_filtergraph(ost->filter->graph);
    4490           9 :             if (ret < 0) {
    4491           0 :                 av_log(NULL, AV_LOG_ERROR, "Error reinitializing filters!\n");
    4492           0 :                 return ret;
    4493             :             }
    4494             :         }
    4495             :     }
    4496             : 
    4497     2613281 :     if (ost->filter && ost->filter->graph->graph) {
    4498      362736 :         if ((ret = transcode_from_filter(ost->filter->graph, &ist)) < 0)
    4499           0 :             return ret;
    4500      721322 :         if (!ist)
    4501        4150 :             return 0;
    4502     2250545 :     } else if (ost->filter) {
    4503             :         int i;
    4504     2261766 :         for (i = 0; i < ost->filter->graph->nb_inputs; i++) {
    4505     2261766 :             InputFilter *ifilter = ost->filter->graph->inputs[i];
    4506     2261766 :             if (!ifilter->ist->got_output && !input_files[ifilter->ist->file_index]->eof_reached) {
    4507     2229844 :                 ist = ifilter->ist;
    4508     2229844 :                 break;
    4509             :             }
    4510             :         }
    4511     2229844 :         if (!ist) {
    4512           0 :             ost->inputs_done = 1;
    4513           0 :             return 0;
    4514             :         }
    4515             :     } else {
    4516       20701 :         av_assert0(ost->source_index >= 0);
    4517       20701 :         ist = input_streams[ost->source_index];
    4518             :     }
    4519             : 
    4520     2609131 :     ret = process_input(ist->file_index);
    4521     2609131 :     if (ret == AVERROR(EAGAIN)) {
    4522     2224793 :         if (input_files[ist->file_index]->eagain)
    4523     2221970 :             ost->unavailable = 1;
    4524     2224793 :         return 0;
    4525             :     }
    4526             : 
    4527      384338 :     if (ret < 0)
    4528           0 :         return ret == AVERROR_EOF ? 0 : ret;
    4529             : 
    4530      384338 :     return reap_filters(0);
    4531             : }
    4532             : 
    4533             : /*
    4534             :  * The following code is the main loop of the file converter
    4535             :  */
    4536        5167 : static int transcode(void)
    4537             : {
    4538             :     int ret, i;
    4539             :     AVFormatContext *os;
    4540             :     OutputStream *ost;
    4541             :     InputStream *ist;
    4542             :     int64_t timer_start;
    4543        5167 :     int64_t total_packets_written = 0;
    4544             : 
    4545        5167 :     ret = transcode_init();
    4546        5167 :     if (ret < 0)
    4547           0 :         goto fail;
    4548             : 
    4549        5167 :     if (stdin_interaction) {
    4550          10 :         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
    4551             :     }
    4552             : 
    4553        5167 :     timer_start = av_gettime_relative();
    4554             : 
    4555             : #if HAVE_PTHREADS
    4556        5167 :     if ((ret = init_input_threads()) < 0)
    4557           0 :         goto fail;
    4558             : #endif
    4559             : 
    4560     2623617 :     while (!received_sigterm) {
    4561     2618450 :         int64_t cur_time= av_gettime_relative();
    4562             : 
    4563             :         /* if 'q' pressed, exits */
    4564     2618450 :         if (stdin_interaction)
    4565        3269 :             if (check_keyboard_interaction(cur_time) < 0)
    4566           0 :                 break;
    4567             : 
    4568             :         /* check if there's any stream where output is still needed */
    4569     2618450 :         if (!need_output()) {
    4570        5167 :             av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n");
    4571        5167 :             break;
    4572             :         }
    4573             : 
    4574     2613283 :         ret = transcode_step();
    4575     2613283 :         if (ret < 0 && ret != AVERROR_EOF) {
    4576             :             char errbuf[128];
    4577           0 :             av_strerror(ret, errbuf, sizeof(errbuf));
    4578             : 
    4579           0 :             av_log(NULL, AV_LOG_ERROR, "Error while filtering: %s\n", errbuf);
    4580           0 :             break;
    4581             :         }
    4582             : 
    4583             :         /* dump report by using the output first video and audio streams */
    4584     2613283 :         print_report(0, timer_start, cur_time);
    4585             :     }
    4586             : #if HAVE_PTHREADS
    4587        5167 :     free_input_threads();
    4588             : #endif
    4589             : 
    4590             :     /* at the end of stream, we must flush the decoder buffers */
    4591       10692 :     for (i = 0; i < nb_input_streams; i++) {
    4592        5525 :         ist = input_streams[i];
    4593        5525 :         if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
    4594        2385 :             process_input_packet(ist, NULL, 0);
    4595             :         }
    4596             :     }
    4597        5167 :     flush_encoders();
    4598             : 
    4599        5167 :     term_exit();
    4600             : 
    4601             :     /* write the trailer if needed and close file */
    4602       10335 :     for (i = 0; i < nb_output_files; i++) {
    4603        5168 :         os = output_files[i]->ctx;
    4604        5168 :         if (!output_files[i]->header_written) {
    4605           0 :             av_log(NULL, AV_LOG_ERROR,
    4606             :                    "Nothing was written into output file %d (%s), because "
    4607             :                    "at least one of its streams received no packets.\n",
    4608           0 :                    i, os->filename);
    4609           0 :             continue;
    4610             :         }
    4611        5168 :         if ((ret = av_write_trailer(os)) < 0) {
    4612           0 :             av_log(NULL, AV_LOG_ERROR, "Error writing trailer of %s: %s\n", os->filename, av_err2str(ret));
    4613           0 :             if (exit_on_error)
    4614           0 :                 exit_program(1);
    4615             :         }
    4616             :     }
    4617             : 
    4618             :     /* dump report by using the first video and audio streams */
    4619        5167 :     print_report(1, timer_start, av_gettime_relative());
    4620             : 
    4621             :     /* close each encoder */
    4622       10467 :     for (i = 0; i < nb_output_streams; i++) {
    4623        5300 :         ost = output_streams[i];
    4624        5300 :         if (ost->encoding_needed) {
    4625        5123 :             av_freep(&ost->enc_ctx->stats_in);
    4626             :         }
    4627        5300 :         total_packets_written += ost->packets_written;
    4628             :     }
    4629             : 
    4630        5167 :     if (!total_packets_written && (abort_on_flags & ABORT_ON_FLAG_EMPTY_OUTPUT)) {
    4631           0 :         av_log(NULL, AV_LOG_FATAL, "Empty output\n");
    4632           0 :         exit_program(1);
    4633             :     }
    4634             : 
    4635             :     /* close each decoder */
    4636       10692 :     for (i = 0; i < nb_input_streams; i++) {
    4637        5525 :         ist = input_streams[i];
    4638        5525 :         if (ist->decoding_needed) {
    4639        5131 :             avcodec_close(ist->dec_ctx);
    4640        5131 :             if (ist->hwaccel_uninit)
    4641           0 :                 ist->hwaccel_uninit(ist->dec_ctx);
    4642             :         }
    4643             :     }
    4644             : 
    4645        5167 :     av_buffer_unref(&hw_device_ctx);
    4646             : 
    4647             :     /* finished ! */
    4648        5167 :     ret = 0;
    4649             : 
    4650             :  fail:
    4651             : #if HAVE_PTHREADS
    4652        5167 :     free_input_threads();
    4653             : #endif
    4654             : 
    4655        5167 :     if (output_streams) {
    4656       10466 :         for (i = 0; i < nb_output_streams; i++) {
    4657        5300 :             ost = output_streams[i];
    4658        5300 :             if (ost) {
    4659        5300 :                 if (ost->logfile) {
    4660           0 :                     if (fclose(ost->logfile))
    4661           0 :                         av_log(NULL, AV_LOG_ERROR,
    4662             :                                "Error closing logfile, loss of information possible: %s\n",
    4663           0 :                                av_err2str(AVERROR(errno)));
    4664           0 :                     ost->logfile = NULL;
    4665             :                 }
    4666        5300 :                 av_freep(&ost->forced_kf_pts);
    4667        5300 :                 av_freep(&ost->apad);
    4668        5300 :                 av_freep(&ost->disposition);
    4669        5300 :                 av_dict_free(&ost->encoder_opts);
    4670        5300 :                 av_dict_free(&ost->sws_dict);
    4671        5300 :                 av_dict_free(&ost->swr_opts);
    4672        5300 :                 av_dict_free(&ost->resample_opts);
    4673             :             }
    4674             :         }
    4675             :     }
    4676        5167 :     return ret;
    4677             : }
    4678             : 
    4679             : 
    4680       10334 : static int64_t getutime(void)
    4681             : {
    4682             : #if HAVE_GETRUSAGE
    4683             :     struct rusage rusage;
    4684             : 
    4685       10334 :     getrusage(RUSAGE_SELF, &rusage);
    4686       10334 :     return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
    4687             : #elif HAVE_GETPROCESSTIMES
    4688             :     HANDLE proc;
    4689             :     FILETIME c, e, k, u;
    4690             :     proc = GetCurrentProcess();
    4691             :     GetProcessTimes(proc, &c, &e, &k, &u);
    4692             :     return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
    4693             : #else
    4694             :     return av_gettime_relative();
    4695             : #endif
    4696             : }
    4697             : 
    4698           0 : static int64_t getmaxrss(void)
    4699             : {
    4700             : #if HAVE_GETRUSAGE && HAVE_STRUCT_RUSAGE_RU_MAXRSS
    4701             :     struct rusage rusage;
    4702           0 :     getrusage(RUSAGE_SELF, &rusage);
    4703           0 :     return (int64_t)rusage.ru_maxrss * 1024;
    4704             : #elif HAVE_GETPROCESSMEMORYINFO
    4705             :     HANDLE proc;
    4706             :     PROCESS_MEMORY_COUNTERS memcounters;
    4707             :     proc = GetCurrentProcess();
    4708             :     memcounters.cb = sizeof(memcounters);
    4709             :     GetProcessMemoryInfo(proc, &memcounters, sizeof(memcounters));
    4710             :     return memcounters.PeakPagefileUsage;
    4711             : #else
    4712             :     return 0;
    4713             : #endif
    4714             : }
    4715             : 
    4716           0 : static void log_callback_null(void *ptr, int level, const char *fmt, va_list vl)
    4717             : {
    4718           0 : }
    4719             : 
    4720        5168 : int main(int argc, char **argv)
    4721             : {
    4722             :     int i, ret;
    4723             :     int64_t ti;
    4724             : 
    4725        5168 :     init_dynload();
    4726             : 
    4727        5168 :     register_exit(ffmpeg_cleanup);
    4728             : 
    4729        5168 :     setvbuf(stderr,NULL,_IONBF,0); /* win32 runtime needs this */
    4730             : 
    4731        5168 :     av_log_set_flags(AV_LOG_SKIP_REPEATED);
    4732        5168 :     parse_loglevel(argc, argv, options);
    4733             : 
    4734        5168 :     if(argc>1 && !strcmp(argv[1], "-d")){
    4735           0 :         run_as_daemon=1;
    4736           0 :         av_log_set_callback(log_callback_null);
    4737           0 :         argc--;
    4738           0 :         argv++;
    4739             :     }
    4740             : 
    4741        5168 :     avcodec_register_all();
    4742             : #if CONFIG_AVDEVICE
    4743        5168 :     avdevice_register_all();
    4744             : #endif
    4745        5168 :     avfilter_register_all();
    4746        5168 :     av_register_all();
    4747        5168 :     avformat_network_init();
    4748             : 
    4749        5168 :     show_banner(argc, argv, options);
    4750             : 
    4751             :     /* parse options and open all input/output files */
    4752        5168 :     ret = ffmpeg_parse_options(argc, argv);
    4753        5167 :     if (ret < 0)
    4754           0 :         exit_program(1);
    4755             : 
    4756        5167 :     if (nb_output_files <= 0 && nb_input_files == 0) {
    4757           0 :         show_usage();
    4758           0 :         av_log(NULL, AV_LOG_WARNING, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
    4759           0 :         exit_program(1);
    4760             :     }
    4761             : 
    4762             :     /* file converter / grab */
    4763        5167 :     if (nb_output_files <= 0) {
    4764           0 :         av_log(NULL, AV_LOG_FATAL, "At least one output file must be specified\n");
    4765           0 :         exit_program(1);
    4766             :     }
    4767             : 
    4768             : //     if (nb_input_files == 0) {
    4769             : //         av_log(NULL, AV_LOG_FATAL, "At least one input file must be specified\n");
    4770             : //         exit_program(1);
    4771             : //     }
    4772             : 
    4773       10335 :     for (i = 0; i < nb_output_files; i++) {
    4774        5168 :         if (strcmp(output_files[i]->ctx->oformat->name, "rtp"))
    4775        5168 :             want_sdp = 0;
    4776             :     }
    4777             : 
    4778        5167 :     current_time = ti = getutime();
    4779        5167 :     if (transcode() < 0)
    4780           0 :         exit_program(1);
    4781        5167 :     ti = getutime() - ti;
    4782        5167 :     if (do_benchmark) {
    4783           0 :         av_log(NULL, AV_LOG_INFO, "bench: utime=%0.3fs\n", ti / 1000000.0);
    4784             :     }
    4785        5167 :     av_log(NULL, AV_LOG_DEBUG, "%"PRIu64" frames successfully decoded, %"PRIu64" decoding errors\n",
    4786             :            decode_error_stat[0], decode_error_stat[1]);
    4787        5167 :     if ((decode_error_stat[0] + decode_error_stat[1]) * max_error_rate < decode_error_stat[1])
    4788           0 :         exit_program(69);
    4789             : 
    4790        5167 :     exit_program(received_nb_signals ? 255 : main_return_code);
    4791             :     return main_return_code;
    4792             : }

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