FFmpeg
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ffmpeg.c
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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 #if HAVE_ISATTY
34 #if HAVE_IO_H
35 #include <io.h>
36 #endif
37 #if HAVE_UNISTD_H
38 #include <unistd.h>
39 #endif
40 #endif
41 #include "libavformat/avformat.h"
42 #include "libavdevice/avdevice.h"
43 #include "libswscale/swscale.h"
45 #include "libavutil/opt.h"
47 #include "libavutil/parseutils.h"
48 #include "libavutil/samplefmt.h"
49 #include "libavutil/fifo.h"
50 #include "libavutil/intreadwrite.h"
51 #include "libavutil/dict.h"
52 #include "libavutil/mathematics.h"
53 #include "libavutil/pixdesc.h"
54 #include "libavutil/avstring.h"
55 #include "libavutil/libm.h"
56 #include "libavutil/imgutils.h"
57 #include "libavutil/timestamp.h"
58 #include "libavutil/bprint.h"
59 #include "libavutil/time.h"
60 #include "libavformat/os_support.h"
61 
62 #include "libavformat/ffm.h" // not public API
63 
64 # include "libavfilter/avcodec.h"
65 # include "libavfilter/avfilter.h"
66 # include "libavfilter/buffersrc.h"
67 # include "libavfilter/buffersink.h"
68 
69 #if HAVE_SYS_RESOURCE_H
70 #include <sys/time.h>
71 #include <sys/types.h>
72 #include <sys/resource.h>
73 #elif HAVE_GETPROCESSTIMES
74 #include <windows.h>
75 #endif
76 #if HAVE_GETPROCESSMEMORYINFO
77 #include <windows.h>
78 #include <psapi.h>
79 #endif
80 
81 #if HAVE_SYS_SELECT_H
82 #include <sys/select.h>
83 #endif
84 
85 #if HAVE_TERMIOS_H
86 #include <fcntl.h>
87 #include <sys/ioctl.h>
88 #include <sys/time.h>
89 #include <termios.h>
90 #elif HAVE_KBHIT
91 #include <conio.h>
92 #endif
93 
94 #if HAVE_PTHREADS
95 #include <pthread.h>
96 #endif
97 
98 #include <time.h>
99 
100 #include "ffmpeg.h"
101 #include "cmdutils.h"
102 
103 #include "libavutil/avassert.h"
104 
105 const char program_name[] = "ffmpeg";
106 const int program_birth_year = 2000;
107 
108 static FILE *vstats_file;
109 
110 const char *const forced_keyframes_const_names[] = {
111  "n",
112  "n_forced",
113  "prev_forced_n",
114  "prev_forced_t",
115  "t",
116  NULL
117 };
118 
119 static void do_video_stats(OutputStream *ost, int frame_size);
120 static int64_t getutime(void);
121 static int64_t getmaxrss(void);
122 
123 static int run_as_daemon = 0;
124 static int64_t video_size = 0;
125 static int64_t audio_size = 0;
126 static int64_t subtitle_size = 0;
127 static int64_t extra_size = 0;
128 static int nb_frames_dup = 0;
129 static int nb_frames_drop = 0;
130 static int64_t decode_error_stat[2];
131 
132 static int current_time;
134 
136 
137 #if HAVE_PTHREADS
138 /* signal to input threads that they should exit; set by the main thread */
139 static int transcoding_finished;
140 #endif
141 
142 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
143 
148 
153 
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 static void free_input_threads(void);
165 
166 
167 /* sub2video hack:
168  Convert subtitles to video with alpha to insert them in filter graphs.
169  This is a temporary solution until libavfilter gets real subtitles support.
170  */
171 
173 {
174  int ret;
175  AVFrame *frame = ist->sub2video.frame;
176 
177  av_frame_unref(frame);
178  ist->sub2video.frame->width = ist->sub2video.w;
179  ist->sub2video.frame->height = ist->sub2video.h;
181  if ((ret = av_frame_get_buffer(frame, 32)) < 0)
182  return ret;
183  memset(frame->data[0], 0, frame->height * frame->linesize[0]);
184  return 0;
185 }
186 
187 static void sub2video_copy_rect(uint8_t *dst, int dst_linesize, int w, int h,
188  AVSubtitleRect *r)
189 {
190  uint32_t *pal, *dst2;
191  uint8_t *src, *src2;
192  int x, y;
193 
194  if (r->type != SUBTITLE_BITMAP) {
195  av_log(NULL, AV_LOG_WARNING, "sub2video: non-bitmap subtitle\n");
196  return;
197  }
198  if (r->x < 0 || r->x + r->w > w || r->y < 0 || r->y + r->h > h) {
199  av_log(NULL, AV_LOG_WARNING, "sub2video: rectangle overflowing\n");
200  return;
201  }
202 
203  dst += r->y * dst_linesize + r->x * 4;
204  src = r->pict.data[0];
205  pal = (uint32_t *)r->pict.data[1];
206  for (y = 0; y < r->h; y++) {
207  dst2 = (uint32_t *)dst;
208  src2 = src;
209  for (x = 0; x < r->w; x++)
210  *(dst2++) = pal[*(src2++)];
211  dst += dst_linesize;
212  src += r->pict.linesize[0];
213  }
214 }
215 
216 static void sub2video_push_ref(InputStream *ist, int64_t pts)
217 {
218  AVFrame *frame = ist->sub2video.frame;
219  int i;
220 
221  av_assert1(frame->data[0]);
222  ist->sub2video.last_pts = frame->pts = pts;
223  for (i = 0; i < ist->nb_filters; i++)
227 }
228 
229 static void sub2video_update(InputStream *ist, AVSubtitle *sub)
230 {
231  int w = ist->sub2video.w, h = ist->sub2video.h;
232  AVFrame *frame = ist->sub2video.frame;
233  int8_t *dst;
234  int dst_linesize;
235  int num_rects, i;
236  int64_t pts, end_pts;
237 
238  if (!frame)
239  return;
240  if (sub) {
241  pts = av_rescale_q(sub->pts + sub->start_display_time * 1000,
242  AV_TIME_BASE_Q, ist->st->time_base);
243  end_pts = av_rescale_q(sub->pts + sub->end_display_time * 1000,
244  AV_TIME_BASE_Q, ist->st->time_base);
245  num_rects = sub->num_rects;
246  } else {
247  pts = ist->sub2video.end_pts;
248  end_pts = INT64_MAX;
249  num_rects = 0;
250  }
251  if (sub2video_get_blank_frame(ist) < 0) {
252  av_log(ist->st->codec, AV_LOG_ERROR,
253  "Impossible to get a blank canvas.\n");
254  return;
255  }
256  dst = frame->data [0];
257  dst_linesize = frame->linesize[0];
258  for (i = 0; i < num_rects; i++)
259  sub2video_copy_rect(dst, dst_linesize, w, h, sub->rects[i]);
260  sub2video_push_ref(ist, pts);
261  ist->sub2video.end_pts = end_pts;
262 }
263 
264 static void sub2video_heartbeat(InputStream *ist, int64_t pts)
265 {
266  InputFile *infile = input_files[ist->file_index];
267  int i, j, nb_reqs;
268  int64_t pts2;
269 
270  /* When a frame is read from a file, examine all sub2video streams in
271  the same file and send the sub2video frame again. Otherwise, decoded
272  video frames could be accumulating in the filter graph while a filter
273  (possibly overlay) is desperately waiting for a subtitle frame. */
274  for (i = 0; i < infile->nb_streams; i++) {
275  InputStream *ist2 = input_streams[infile->ist_index + i];
276  if (!ist2->sub2video.frame)
277  continue;
278  /* subtitles seem to be usually muxed ahead of other streams;
279  if not, substracting a larger time here is necessary */
280  pts2 = av_rescale_q(pts, ist->st->time_base, ist2->st->time_base) - 1;
281  /* do not send the heartbeat frame if the subtitle is already ahead */
282  if (pts2 <= ist2->sub2video.last_pts)
283  continue;
284  if (pts2 >= ist2->sub2video.end_pts || !ist2->sub2video.frame->data[0])
285  sub2video_update(ist2, NULL);
286  for (j = 0, nb_reqs = 0; j < ist2->nb_filters; j++)
287  nb_reqs += av_buffersrc_get_nb_failed_requests(ist2->filters[j]->filter);
288  if (nb_reqs)
289  sub2video_push_ref(ist2, pts2);
290  }
291 }
292 
293 static void sub2video_flush(InputStream *ist)
294 {
295  int i;
296 
297  for (i = 0; i < ist->nb_filters; i++)
298  av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
299 }
300 
301 /* end of sub2video hack */
302 
303 void term_exit(void)
304 {
305  av_log(NULL, AV_LOG_QUIET, "%s", "");
306 #if HAVE_TERMIOS_H
307  if(restore_tty)
308  tcsetattr (0, TCSANOW, &oldtty);
309 #endif
310 }
311 
312 static volatile int received_sigterm = 0;
313 static volatile int received_nb_signals = 0;
314 
315 static void
317 {
318  received_sigterm = sig;
320  term_exit();
321  if(received_nb_signals > 3)
322  exit_program(123);
323 }
324 
325 void term_init(void)
326 {
327 #if HAVE_TERMIOS_H
328  if(!run_as_daemon){
329  struct termios tty;
330  int istty = 1;
331 #if HAVE_ISATTY
332  istty = isatty(0) && isatty(2);
333 #endif
334  if (istty && tcgetattr (0, &tty) == 0) {
335  oldtty = tty;
336  restore_tty = 1;
337 
338  tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
339  |INLCR|IGNCR|ICRNL|IXON);
340  tty.c_oflag |= OPOST;
341  tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
342  tty.c_cflag &= ~(CSIZE|PARENB);
343  tty.c_cflag |= CS8;
344  tty.c_cc[VMIN] = 1;
345  tty.c_cc[VTIME] = 0;
346 
347  tcsetattr (0, TCSANOW, &tty);
348  }
349  signal(SIGQUIT, sigterm_handler); /* Quit (POSIX). */
350  }
351 #endif
353 
354  signal(SIGINT , sigterm_handler); /* Interrupt (ANSI). */
355  signal(SIGTERM, sigterm_handler); /* Termination (ANSI). */
356 #ifdef SIGXCPU
357  signal(SIGXCPU, sigterm_handler);
358 #endif
359 }
360 
361 /* read a key without blocking */
362 static int read_key(void)
363 {
364  unsigned char ch;
365 #if HAVE_TERMIOS_H
366  int n = 1;
367  struct timeval tv;
368  fd_set rfds;
369 
370  FD_ZERO(&rfds);
371  FD_SET(0, &rfds);
372  tv.tv_sec = 0;
373  tv.tv_usec = 0;
374  n = select(1, &rfds, NULL, NULL, &tv);
375  if (n > 0) {
376  n = read(0, &ch, 1);
377  if (n == 1)
378  return ch;
379 
380  return n;
381  }
382 #elif HAVE_KBHIT
383 # if HAVE_PEEKNAMEDPIPE
384  static int is_pipe;
385  static HANDLE input_handle;
386  DWORD dw, nchars;
387  if(!input_handle){
388  input_handle = GetStdHandle(STD_INPUT_HANDLE);
389  is_pipe = !GetConsoleMode(input_handle, &dw);
390  }
391 
392  if (stdin->_cnt > 0) {
393  read(0, &ch, 1);
394  return ch;
395  }
396  if (is_pipe) {
397  /* When running under a GUI, you will end here. */
398  if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL)) {
399  // input pipe may have been closed by the program that ran ffmpeg
400  return -1;
401  }
402  //Read it
403  if(nchars != 0) {
404  read(0, &ch, 1);
405  return ch;
406  }else{
407  return -1;
408  }
409  }
410 # endif
411  if(kbhit())
412  return(getch());
413 #endif
414  return -1;
415 }
416 
417 static int decode_interrupt_cb(void *ctx)
418 {
419  return received_nb_signals > 1;
420 }
421 
423 
424 static void ffmpeg_cleanup(int ret)
425 {
426  int i, j;
427 
428  if (do_benchmark) {
429  int maxrss = getmaxrss() / 1024;
430  printf("bench: maxrss=%ikB\n", maxrss);
431  }
432 
433  for (i = 0; i < nb_filtergraphs; i++) {
434  avfilter_graph_free(&filtergraphs[i]->graph);
435  for (j = 0; j < filtergraphs[i]->nb_inputs; j++) {
436  av_freep(&filtergraphs[i]->inputs[j]->name);
437  av_freep(&filtergraphs[i]->inputs[j]);
438  }
439  av_freep(&filtergraphs[i]->inputs);
440  for (j = 0; j < filtergraphs[i]->nb_outputs; j++) {
441  av_freep(&filtergraphs[i]->outputs[j]->name);
442  av_freep(&filtergraphs[i]->outputs[j]);
443  }
444  av_freep(&filtergraphs[i]->outputs);
445  av_freep(&filtergraphs[i]->graph_desc);
446  av_freep(&filtergraphs[i]);
447  }
448  av_freep(&filtergraphs);
449 
451 
452  /* close files */
453  for (i = 0; i < nb_output_files; i++) {
454  AVFormatContext *s = output_files[i]->ctx;
455  if (s && s->oformat && !(s->oformat->flags & AVFMT_NOFILE) && s->pb)
456  avio_close(s->pb);
458  av_dict_free(&output_files[i]->opts);
459  av_freep(&output_files[i]);
460  }
461  for (i = 0; i < nb_output_streams; i++) {
462  AVBitStreamFilterContext *bsfc = output_streams[i]->bitstream_filters;
463  while (bsfc) {
464  AVBitStreamFilterContext *next = bsfc->next;
466  bsfc = next;
467  }
468  output_streams[i]->bitstream_filters = NULL;
469  avcodec_free_frame(&output_streams[i]->filtered_frame);
470 
471  av_freep(&output_streams[i]->forced_keyframes);
472  av_expr_free(output_streams[i]->forced_keyframes_pexpr);
473  av_freep(&output_streams[i]->avfilter);
474  av_freep(&output_streams[i]->logfile_prefix);
475  av_freep(&output_streams[i]);
476  }
477 #if HAVE_PTHREADS
479 #endif
480  for (i = 0; i < nb_input_files; i++) {
481  avformat_close_input(&input_files[i]->ctx);
482  av_freep(&input_files[i]);
483  }
484  for (i = 0; i < nb_input_streams; i++) {
485  av_frame_free(&input_streams[i]->decoded_frame);
486  av_frame_free(&input_streams[i]->filter_frame);
487  av_dict_free(&input_streams[i]->opts);
488  avsubtitle_free(&input_streams[i]->prev_sub.subtitle);
489  av_frame_free(&input_streams[i]->sub2video.frame);
490  av_freep(&input_streams[i]->filters);
491  av_freep(&input_streams[i]);
492  }
493 
494  if (vstats_file)
495  fclose(vstats_file);
497 
498  av_freep(&input_streams);
499  av_freep(&input_files);
500  av_freep(&output_streams);
501  av_freep(&output_files);
502 
503  uninit_opts();
504 
506 
507  if (received_sigterm) {
508  av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
509  (int) received_sigterm);
510  }
511  term_exit();
512 }
513 
515 {
517  if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
518  av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
519  exit_program(1);
520  }
521 }
522 
523 static void abort_codec_experimental(AVCodec *c, int encoder)
524 {
525  exit_program(1);
526 }
527 
528 static void update_benchmark(const char *fmt, ...)
529 {
530  if (do_benchmark_all) {
531  int64_t t = getutime();
532  va_list va;
533  char buf[1024];
534 
535  if (fmt) {
536  va_start(va, fmt);
537  vsnprintf(buf, sizeof(buf), fmt, va);
538  va_end(va);
539  printf("bench: %8"PRIu64" %s \n", t - current_time, buf);
540  }
541  current_time = t;
542  }
543 }
544 
546 {
548  AVCodecContext *avctx = ost->st->codec;
549  int ret;
550 
553  pkt->pts = pkt->dts = AV_NOPTS_VALUE;
554 
555  /*
556  * Audio encoders may split the packets -- #frames in != #packets out.
557  * But there is no reordering, so we can limit the number of output packets
558  * by simply dropping them here.
559  * Counting encoded video frames needs to be done separately because of
560  * reordering, see do_video_out()
561  */
562  if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
563  if (ost->frame_number >= ost->max_frames) {
564  av_free_packet(pkt);
565  return;
566  }
567  ost->frame_number++;
568  }
569 
570  while (bsfc) {
571  AVPacket new_pkt = *pkt;
572  int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
573  &new_pkt.data, &new_pkt.size,
574  pkt->data, pkt->size,
575  pkt->flags & AV_PKT_FLAG_KEY);
576  if(a == 0 && new_pkt.data != pkt->data && new_pkt.destruct) {
577  uint8_t *t = av_malloc(new_pkt.size + FF_INPUT_BUFFER_PADDING_SIZE); //the new should be a subset of the old so cannot overflow
578  if(t) {
579  memcpy(t, new_pkt.data, new_pkt.size);
580  memset(t + new_pkt.size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
581  new_pkt.data = t;
582  new_pkt.buf = NULL;
583  a = 1;
584  } else
585  a = AVERROR(ENOMEM);
586  }
587  if (a > 0) {
588  av_free_packet(pkt);
589  new_pkt.buf = av_buffer_create(new_pkt.data, new_pkt.size,
590  av_buffer_default_free, NULL, 0);
591  if (!new_pkt.buf)
592  exit_program(1);
593  } else if (a < 0) {
594  av_log(NULL, AV_LOG_ERROR, "Failed to open bitstream filter %s for stream %d with codec %s",
595  bsfc->filter->name, pkt->stream_index,
596  avctx->codec ? avctx->codec->name : "copy");
597  print_error("", a);
598  if (exit_on_error)
599  exit_program(1);
600  }
601  *pkt = new_pkt;
602 
603  bsfc = bsfc->next;
604  }
605 
606  if (!(s->oformat->flags & AVFMT_NOTIMESTAMPS) &&
607  (avctx->codec_type == AVMEDIA_TYPE_AUDIO || avctx->codec_type == AVMEDIA_TYPE_VIDEO) &&
608  pkt->dts != AV_NOPTS_VALUE &&
609  ost->last_mux_dts != AV_NOPTS_VALUE) {
610  int64_t max = ost->last_mux_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT);
611  if (pkt->dts < max) {
612  int loglevel = max - pkt->dts > 2 || avctx->codec_type == AVMEDIA_TYPE_VIDEO ? AV_LOG_WARNING : AV_LOG_DEBUG;
613  av_log(s, loglevel, "Non-monotonous DTS in output stream "
614  "%d:%d; previous: %"PRId64", current: %"PRId64"; ",
615  ost->file_index, ost->st->index, ost->last_mux_dts, pkt->dts);
616  if (exit_on_error) {
617  av_log(NULL, AV_LOG_FATAL, "aborting.\n");
618  exit_program(1);
619  }
620  av_log(s, loglevel, "changing to %"PRId64". This may result "
621  "in incorrect timestamps in the output file.\n",
622  max);
623  if(pkt->pts >= pkt->dts)
624  pkt->pts = FFMAX(pkt->pts, max);
625  pkt->dts = max;
626  }
627  }
628  ost->last_mux_dts = pkt->dts;
629 
630  pkt->stream_index = ost->index;
631 
632  if (debug_ts) {
633  av_log(NULL, AV_LOG_INFO, "muxer <- type:%s "
634  "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s size:%d\n",
636  av_ts2str(pkt->pts), av_ts2timestr(pkt->pts, &ost->st->time_base),
637  av_ts2str(pkt->dts), av_ts2timestr(pkt->dts, &ost->st->time_base),
638  pkt->size
639  );
640  }
641 
642  ret = av_interleaved_write_frame(s, pkt);
643  if (ret < 0) {
644  print_error("av_interleaved_write_frame()", ret);
645  exit_program(1);
646  }
647 }
648 
650 {
651  OutputFile *of = output_files[ost->file_index];
652 
653  ost->finished = 1;
654  if (of->shortest) {
655  int64_t end = av_rescale_q(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, AV_TIME_BASE_Q);
656  of->recording_time = FFMIN(of->recording_time, end);
657  }
658 }
659 
661 {
662  OutputFile *of = output_files[ost->file_index];
663 
664  if (of->recording_time != INT64_MAX &&
666  AV_TIME_BASE_Q) >= 0) {
667  close_output_stream(ost);
668  return 0;
669  }
670  return 1;
671 }
672 
674  AVFrame *frame)
675 {
676  AVCodecContext *enc = ost->st->codec;
677  AVPacket pkt;
678  int got_packet = 0;
679 
680  av_init_packet(&pkt);
681  pkt.data = NULL;
682  pkt.size = 0;
683 
684  if (!check_recording_time(ost))
685  return;
686 
687  if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
688  frame->pts = ost->sync_opts;
689  ost->sync_opts = frame->pts + frame->nb_samples;
690 
691  av_assert0(pkt.size || !pkt.data);
692  update_benchmark(NULL);
693  if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
694  av_log(NULL, AV_LOG_FATAL, "Audio encoding failed (avcodec_encode_audio2)\n");
695  exit_program(1);
696  }
697  update_benchmark("encode_audio %d.%d", ost->file_index, ost->index);
698 
699  if (got_packet) {
700  if (pkt.pts != AV_NOPTS_VALUE)
701  pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
702  if (pkt.dts != AV_NOPTS_VALUE)
703  pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
704  if (pkt.duration > 0)
705  pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
706 
707  if (debug_ts) {
708  av_log(NULL, AV_LOG_INFO, "encoder -> type:audio "
709  "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
710  av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
711  av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
712  }
713 
714  audio_size += pkt.size;
715  write_frame(s, &pkt, ost);
716 
717  av_free_packet(&pkt);
718  }
719 }
720 
722  OutputStream *ost,
723  InputStream *ist,
724  AVSubtitle *sub)
725 {
726  int subtitle_out_max_size = 1024 * 1024;
727  int subtitle_out_size, nb, i;
728  AVCodecContext *enc;
729  AVPacket pkt;
730  int64_t pts;
731 
732  if (sub->pts == AV_NOPTS_VALUE) {
733  av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
734  if (exit_on_error)
735  exit_program(1);
736  return;
737  }
738 
739  enc = ost->st->codec;
740 
741  if (!subtitle_out) {
742  subtitle_out = av_malloc(subtitle_out_max_size);
743  }
744 
745  /* Note: DVB subtitle need one packet to draw them and one other
746  packet to clear them */
747  /* XXX: signal it in the codec context ? */
749  nb = 2;
750  else
751  nb = 1;
752 
753  /* shift timestamp to honor -ss and make check_recording_time() work with -t */
754  pts = sub->pts - output_files[ost->file_index]->start_time;
755  for (i = 0; i < nb; i++) {
756  ost->sync_opts = av_rescale_q(pts, AV_TIME_BASE_Q, enc->time_base);
757  if (!check_recording_time(ost))
758  return;
759 
760  sub->pts = pts;
761  // start_display_time is required to be 0
762  sub->pts += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
764  sub->start_display_time = 0;
765  if (i == 1)
766  sub->num_rects = 0;
767  subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
768  subtitle_out_max_size, sub);
769  if (subtitle_out_size < 0) {
770  av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
771  exit_program(1);
772  }
773 
774  av_init_packet(&pkt);
775  pkt.data = subtitle_out;
776  pkt.size = subtitle_out_size;
777  pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
778  pkt.duration = av_rescale_q(sub->end_display_time, (AVRational){ 1, 1000 }, ost->st->time_base);
779  if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
780  /* XXX: the pts correction is handled here. Maybe handling
781  it in the codec would be better */
782  if (i == 0)
783  pkt.pts += 90 * sub->start_display_time;
784  else
785  pkt.pts += 90 * sub->end_display_time;
786  }
788  write_frame(s, &pkt, ost);
789  }
790 }
791 
793  OutputStream *ost,
794  AVFrame *in_picture)
795 {
796  int ret, format_video_sync;
797  AVPacket pkt;
798  AVCodecContext *enc = ost->st->codec;
799  int nb_frames, i;
800  double sync_ipts, delta;
801  double duration = 0;
802  int frame_size = 0;
803  InputStream *ist = NULL;
804 
805  if (ost->source_index >= 0)
806  ist = input_streams[ost->source_index];
807 
808  if(ist && ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE && ost->frame_rate.num)
809  duration = 1/(av_q2d(ost->frame_rate) * av_q2d(enc->time_base));
810 
811  sync_ipts = in_picture->pts;
812  delta = sync_ipts - ost->sync_opts + duration;
813 
814  /* by default, we output a single frame */
815  nb_frames = 1;
816 
817  format_video_sync = video_sync_method;
818  if (format_video_sync == VSYNC_AUTO)
820 
821  switch (format_video_sync) {
822  case VSYNC_CFR:
823  // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
824  if (delta < -1.1)
825  nb_frames = 0;
826  else if (delta > 1.1)
827  nb_frames = lrintf(delta);
828  break;
829  case VSYNC_VFR:
830  if (delta <= -0.6)
831  nb_frames = 0;
832  else if (delta > 0.6)
833  ost->sync_opts = lrint(sync_ipts);
834  break;
835  case VSYNC_DROP:
836  case VSYNC_PASSTHROUGH:
837  ost->sync_opts = lrint(sync_ipts);
838  break;
839  default:
840  av_assert0(0);
841  }
842 
843  nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
844  if (nb_frames == 0) {
845  nb_frames_drop++;
846  av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
847  return;
848  } else if (nb_frames > 1) {
849  if (nb_frames > dts_error_threshold * 30) {
850  av_log(NULL, AV_LOG_ERROR, "%d frame duplication too large, skipping\n", nb_frames - 1);
851  nb_frames_drop++;
852  return;
853  }
854  nb_frames_dup += nb_frames - 1;
855  av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
856  }
857 
858  /* duplicates frame if needed */
859  for (i = 0; i < nb_frames; i++) {
860  av_init_packet(&pkt);
861  pkt.data = NULL;
862  pkt.size = 0;
863 
864  in_picture->pts = ost->sync_opts;
865 
866 #if 1
867  if (!check_recording_time(ost))
868 #else
869  if (ost->frame_number >= ost->max_frames)
870 #endif
871  return;
872 
873  if (s->oformat->flags & AVFMT_RAWPICTURE &&
874  enc->codec->id == AV_CODEC_ID_RAWVIDEO) {
875  /* raw pictures are written as AVPicture structure to
876  avoid any copies. We support temporarily the older
877  method. */
878  enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
879  enc->coded_frame->top_field_first = in_picture->top_field_first;
880  if (enc->coded_frame->interlaced_frame)
882  else
884  pkt.data = (uint8_t *)in_picture;
885  pkt.size = sizeof(AVPicture);
886  pkt.pts = av_rescale_q(in_picture->pts, enc->time_base, ost->st->time_base);
887  pkt.flags |= AV_PKT_FLAG_KEY;
888 
889  video_size += pkt.size;
890  write_frame(s, &pkt, ost);
891  } else {
892  int got_packet, forced_keyframe = 0;
893  double pts_time;
894 
896  ost->top_field_first >= 0)
897  in_picture->top_field_first = !!ost->top_field_first;
898 
899  if (in_picture->interlaced_frame) {
900  if (enc->codec->id == AV_CODEC_ID_MJPEG)
901  enc->field_order = in_picture->top_field_first ? AV_FIELD_TT:AV_FIELD_BB;
902  else
903  enc->field_order = in_picture->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
904  } else
906 
907  in_picture->quality = ost->st->codec->global_quality;
908  if (!enc->me_threshold)
909  in_picture->pict_type = 0;
910 
911  pts_time = in_picture->pts != AV_NOPTS_VALUE ?
912  in_picture->pts * av_q2d(enc->time_base) : NAN;
913  if (ost->forced_kf_index < ost->forced_kf_count &&
914  in_picture->pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
915  ost->forced_kf_index++;
916  forced_keyframe = 1;
917  } else if (ost->forced_keyframes_pexpr) {
918  double res;
919  ost->forced_keyframes_expr_const_values[FKF_T] = pts_time;
922  av_dlog(NULL, "force_key_frame: n:%f n_forced:%f prev_forced_n:%f t:%f prev_forced_t:%f -> res:%f\n",
928  res);
929  if (res) {
930  forced_keyframe = 1;
936  }
937 
939  }
940  if (forced_keyframe) {
941  in_picture->pict_type = AV_PICTURE_TYPE_I;
942  av_log(NULL, AV_LOG_DEBUG, "Forced keyframe at time %f\n", pts_time);
943  }
944 
945  update_benchmark(NULL);
946  ret = avcodec_encode_video2(enc, &pkt, in_picture, &got_packet);
947  update_benchmark("encode_video %d.%d", ost->file_index, ost->index);
948  if (ret < 0) {
949  av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
950  exit_program(1);
951  }
952 
953  if (got_packet) {
954  if (pkt.pts == AV_NOPTS_VALUE && !(enc->codec->capabilities & CODEC_CAP_DELAY))
955  pkt.pts = ost->sync_opts;
956 
957  if (pkt.pts != AV_NOPTS_VALUE)
958  pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
959  if (pkt.dts != AV_NOPTS_VALUE)
960  pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
961 
962  if (debug_ts) {
963  av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
964  "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
965  av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
966  av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
967  }
968 
969  frame_size = pkt.size;
970  video_size += pkt.size;
971  write_frame(s, &pkt, ost);
972  av_free_packet(&pkt);
973 
974  /* if two pass, output log */
975  if (ost->logfile && enc->stats_out) {
976  fprintf(ost->logfile, "%s", enc->stats_out);
977  }
978  }
979  }
980  ost->sync_opts++;
981  /*
982  * For video, number of frames in == number of packets out.
983  * But there may be reordering, so we can't throw away frames on encoder
984  * flush, we need to limit them here, before they go into encoder.
985  */
986  ost->frame_number++;
987 
988  if (vstats_filename && frame_size)
989  do_video_stats(ost, frame_size);
990  }
991 }
992 
993 static double psnr(double d)
994 {
995  return -10.0 * log(d) / log(10.0);
996 }
997 
998 static void do_video_stats(OutputStream *ost, int frame_size)
999 {
1000  AVCodecContext *enc;
1001  int frame_number;
1002  double ti1, bitrate, avg_bitrate;
1003 
1004  /* this is executed just the first time do_video_stats is called */
1005  if (!vstats_file) {
1006  vstats_file = fopen(vstats_filename, "w");
1007  if (!vstats_file) {
1008  perror("fopen");
1009  exit_program(1);
1010  }
1011  }
1012 
1013  enc = ost->st->codec;
1014  if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1015  frame_number = ost->st->nb_frames;
1016  fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
1017  if (enc->flags&CODEC_FLAG_PSNR)
1018  fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
1019 
1020  fprintf(vstats_file,"f_size= %6d ", frame_size);
1021  /* compute pts value */
1022  ti1 = ost->st->pts.val * av_q2d(enc->time_base);
1023  if (ti1 < 0.01)
1024  ti1 = 0.01;
1025 
1026  bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1027  avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1028  fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1029  (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1030  fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1031  }
1032 }
1033 
1034 /**
1035  * Get and encode new output from any of the filtergraphs, without causing
1036  * activity.
1037  *
1038  * @return 0 for success, <0 for severe errors
1039  */
1040 static int reap_filters(void)
1041 {
1042  AVFrame *filtered_frame = NULL;
1043  int i;
1044  int64_t frame_pts;
1045 
1046  /* Reap all buffers present in the buffer sinks */
1047  for (i = 0; i < nb_output_streams; i++) {
1048  OutputStream *ost = output_streams[i];
1049  OutputFile *of = output_files[ost->file_index];
1050  int ret = 0;
1051 
1052  if (!ost->filter)
1053  continue;
1054 
1055  if (!ost->filtered_frame && !(ost->filtered_frame = avcodec_alloc_frame())) {
1056  return AVERROR(ENOMEM);
1057  } else
1059  filtered_frame = ost->filtered_frame;
1060 
1061  while (1) {
1062  ret = av_buffersink_get_frame_flags(ost->filter->filter, filtered_frame,
1064  if (ret < 0) {
1065  if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF) {
1066  av_log(NULL, AV_LOG_WARNING,
1067  "Error in av_buffersink_get_frame_flags(): %s\n", av_err2str(ret));
1068  }
1069  break;
1070  }
1071  frame_pts = AV_NOPTS_VALUE;
1072  if (filtered_frame->pts != AV_NOPTS_VALUE) {
1073  filtered_frame->pts = frame_pts = av_rescale_q(filtered_frame->pts,
1074  ost->filter->filter->inputs[0]->time_base,
1075  ost->st->codec->time_base) -
1078  ost->st->codec->time_base);
1079  }
1080  //if (ost->source_index >= 0)
1081  // *filtered_frame= *input_streams[ost->source_index]->decoded_frame; //for me_threshold
1082 
1083 
1084  switch (ost->filter->filter->inputs[0]->type) {
1085  case AVMEDIA_TYPE_VIDEO:
1086  filtered_frame->pts = frame_pts;
1087  if (!ost->frame_aspect_ratio.num)
1088  ost->st->codec->sample_aspect_ratio = filtered_frame->sample_aspect_ratio;
1089 
1090  do_video_out(of->ctx, ost, filtered_frame);
1091  break;
1092  case AVMEDIA_TYPE_AUDIO:
1093  filtered_frame->pts = frame_pts;
1094  if (!(ost->st->codec->codec->capabilities & CODEC_CAP_PARAM_CHANGE) &&
1095  ost->st->codec->channels != av_frame_get_channels(filtered_frame)) {
1096  av_log(NULL, AV_LOG_ERROR,
1097  "Audio filter graph output is not normalized and encoder does not support parameter changes\n");
1098  break;
1099  }
1100  do_audio_out(of->ctx, ost, filtered_frame);
1101  break;
1102  default:
1103  // TODO support subtitle filters
1104  av_assert0(0);
1105  }
1106 
1107  av_frame_unref(filtered_frame);
1108  }
1109  }
1110 
1111  return 0;
1112 }
1113 
1114 static void print_report(int is_last_report, int64_t timer_start, int64_t cur_time)
1115 {
1116  char buf[1024];
1117  AVBPrint buf_script;
1118  OutputStream *ost;
1119  AVFormatContext *oc;
1120  int64_t total_size;
1121  AVCodecContext *enc;
1122  int frame_number, vid, i;
1123  double bitrate;
1124  int64_t pts = INT64_MIN;
1125  static int64_t last_time = -1;
1126  static int qp_histogram[52];
1127  int hours, mins, secs, us;
1128 
1129  if (!print_stats && !is_last_report && !progress_avio)
1130  return;
1131 
1132  if (!is_last_report) {
1133  if (last_time == -1) {
1134  last_time = cur_time;
1135  return;
1136  }
1137  if ((cur_time - last_time) < 500000)
1138  return;
1139  last_time = cur_time;
1140  }
1141 
1142 
1143  oc = output_files[0]->ctx;
1144 
1145  total_size = avio_size(oc->pb);
1146  if (total_size <= 0) // FIXME improve avio_size() so it works with non seekable output too
1147  total_size = avio_tell(oc->pb);
1148 
1149  buf[0] = '\0';
1150  vid = 0;
1151  av_bprint_init(&buf_script, 0, 1);
1152  for (i = 0; i < nb_output_streams; i++) {
1153  float q = -1;
1154  ost = output_streams[i];
1155  enc = ost->st->codec;
1156  if (!ost->stream_copy && enc->coded_frame)
1157  q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
1158  if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1159  snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1160  av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1161  ost->file_index, ost->index, q);
1162  }
1163  if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1164  float fps, t = (cur_time-timer_start) / 1000000.0;
1165 
1166  frame_number = ost->frame_number;
1167  fps = t > 1 ? frame_number / t : 0;
1168  snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3.*f q=%3.1f ",
1169  frame_number, fps < 9.95, fps, q);
1170  av_bprintf(&buf_script, "frame=%d\n", frame_number);
1171  av_bprintf(&buf_script, "fps=%.1f\n", fps);
1172  av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1173  ost->file_index, ost->index, q);
1174  if (is_last_report)
1175  snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1176  if (qp_hist) {
1177  int j;
1178  int qp = lrintf(q);
1179  if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
1180  qp_histogram[qp]++;
1181  for (j = 0; j < 32; j++)
1182  snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log2(qp_histogram[j] + 1)));
1183  }
1184  if ((enc->flags&CODEC_FLAG_PSNR) && (enc->coded_frame || is_last_report)) {
1185  int j;
1186  double error, error_sum = 0;
1187  double scale, scale_sum = 0;
1188  double p;
1189  char type[3] = { 'Y','U','V' };
1190  snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1191  for (j = 0; j < 3; j++) {
1192  if (is_last_report) {
1193  error = enc->error[j];
1194  scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
1195  } else {
1196  error = enc->coded_frame->error[j];
1197  scale = enc->width * enc->height * 255.0 * 255.0;
1198  }
1199  if (j)
1200  scale /= 4;
1201  error_sum += error;
1202  scale_sum += scale;
1203  p = psnr(error / scale);
1204  snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], p);
1205  av_bprintf(&buf_script, "stream_%d_%d_psnr_%c=%2.2f\n",
1206  ost->file_index, ost->index, type[j] | 32, p);
1207  }
1208  p = psnr(error_sum / scale_sum);
1209  snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
1210  av_bprintf(&buf_script, "stream_%d_%d_psnr_all=%2.2f\n",
1211  ost->file_index, ost->index, p);
1212  }
1213  vid = 1;
1214  }
1215  /* compute min output value */
1216  if ((is_last_report || !ost->finished) && ost->st->pts.val != AV_NOPTS_VALUE)
1217  pts = FFMAX(pts, av_rescale_q(ost->st->pts.val,
1218  ost->st->time_base, AV_TIME_BASE_Q));
1219  }
1220 
1221  secs = pts / AV_TIME_BASE;
1222  us = pts % AV_TIME_BASE;
1223  mins = secs / 60;
1224  secs %= 60;
1225  hours = mins / 60;
1226  mins %= 60;
1227 
1228  bitrate = pts && total_size >= 0 ? total_size * 8 / (pts / 1000.0) : -1;
1229 
1230  if (total_size < 0) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1231  "size=N/A time=");
1232  else snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1233  "size=%8.0fkB time=", total_size / 1024.0);
1234  snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1235  "%02d:%02d:%02d.%02d ", hours, mins, secs,
1236  (100 * us) / AV_TIME_BASE);
1237  if (bitrate < 0) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1238  "bitrate=N/A");
1239  else snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1240  "bitrate=%6.1fkbits/s", bitrate);
1241  if (total_size < 0) av_bprintf(&buf_script, "total_size=N/A\n");
1242  else av_bprintf(&buf_script, "total_size=%"PRId64"\n", total_size);
1243  av_bprintf(&buf_script, "out_time_ms=%"PRId64"\n", pts);
1244  av_bprintf(&buf_script, "out_time=%02d:%02d:%02d.%06d\n",
1245  hours, mins, secs, us);
1246 
1248  snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1250  av_bprintf(&buf_script, "dup_frames=%d\n", nb_frames_dup);
1251  av_bprintf(&buf_script, "drop_frames=%d\n", nb_frames_drop);
1252 
1253  if (print_stats || is_last_report) {
1254  if (print_stats==1 && AV_LOG_INFO > av_log_get_level()) {
1255  fprintf(stderr, "%s \r", buf);
1256  } else
1257  av_log(NULL, AV_LOG_INFO, "%s \r", buf);
1258 
1259  fflush(stderr);
1260  }
1261 
1262  if (progress_avio) {
1263  av_bprintf(&buf_script, "progress=%s\n",
1264  is_last_report ? "end" : "continue");
1265  avio_write(progress_avio, buf_script.str,
1266  FFMIN(buf_script.len, buf_script.size - 1));
1267  avio_flush(progress_avio);
1268  av_bprint_finalize(&buf_script, NULL);
1269  if (is_last_report) {
1270  avio_close(progress_avio);
1271  progress_avio = NULL;
1272  }
1273  }
1274 
1275  if (is_last_report) {
1276  int64_t raw= audio_size + video_size + subtitle_size + extra_size;
1277  av_log(NULL, AV_LOG_INFO, "\n");
1278  av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB subtitle:%1.0f global headers:%1.0fkB muxing overhead %f%%\n",
1279  video_size / 1024.0,
1280  audio_size / 1024.0,
1281  subtitle_size / 1024.0,
1282  extra_size / 1024.0,
1283  100.0 * (total_size - raw) / raw
1284  );
1285  if(video_size + audio_size + subtitle_size + extra_size == 0){
1286  av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)\n");
1287  }
1288  }
1289 }
1290 
1291 static void flush_encoders(void)
1292 {
1293  int i, ret;
1294 
1295  for (i = 0; i < nb_output_streams; i++) {
1296  OutputStream *ost = output_streams[i];
1297  AVCodecContext *enc = ost->st->codec;
1298  AVFormatContext *os = output_files[ost->file_index]->ctx;
1299  int stop_encoding = 0;
1300 
1301  if (!ost->encoding_needed)
1302  continue;
1303 
1304  if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
1305  continue;
1307  continue;
1308 
1309  for (;;) {
1310  int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL;
1311  const char *desc;
1312  int64_t *size;
1313 
1314  switch (ost->st->codec->codec_type) {
1315  case AVMEDIA_TYPE_AUDIO:
1316  encode = avcodec_encode_audio2;
1317  desc = "Audio";
1318  size = &audio_size;
1319  break;
1320  case AVMEDIA_TYPE_VIDEO:
1321  encode = avcodec_encode_video2;
1322  desc = "Video";
1323  size = &video_size;
1324  break;
1325  default:
1326  stop_encoding = 1;
1327  }
1328 
1329  if (encode) {
1330  AVPacket pkt;
1331  int got_packet;
1332  av_init_packet(&pkt);
1333  pkt.data = NULL;
1334  pkt.size = 0;
1335 
1336  update_benchmark(NULL);
1337  ret = encode(enc, &pkt, NULL, &got_packet);
1338  update_benchmark("flush %s %d.%d", desc, ost->file_index, ost->index);
1339  if (ret < 0) {
1340  av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
1341  exit_program(1);
1342  }
1343  *size += pkt.size;
1344  if (ost->logfile && enc->stats_out) {
1345  fprintf(ost->logfile, "%s", enc->stats_out);
1346  }
1347  if (!got_packet) {
1348  stop_encoding = 1;
1349  break;
1350  }
1351  if (pkt.pts != AV_NOPTS_VALUE)
1352  pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
1353  if (pkt.dts != AV_NOPTS_VALUE)
1354  pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
1355  if (pkt.duration > 0)
1356  pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
1357  write_frame(os, &pkt, ost);
1359  do_video_stats(ost, pkt.size);
1360  }
1361  }
1362 
1363  if (stop_encoding)
1364  break;
1365  }
1366  }
1367 }
1368 
1369 /*
1370  * Check whether a packet from ist should be written into ost at this time
1371  */
1373 {
1374  OutputFile *of = output_files[ost->file_index];
1375  int ist_index = input_files[ist->file_index]->ist_index + ist->st->index;
1376 
1377  if (ost->source_index != ist_index)
1378  return 0;
1379 
1380  if (of->start_time && ist->pts < of->start_time)
1381  return 0;
1382 
1383  return 1;
1384 }
1385 
1386 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1387 {
1388  OutputFile *of = output_files[ost->file_index];
1389  int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
1390  int64_t ist_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ist->st->time_base);
1391  AVPicture pict;
1392  AVPacket opkt;
1393 
1394  av_init_packet(&opkt);
1395 
1396  if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1398  return;
1399 
1400  if (pkt->pts == AV_NOPTS_VALUE) {
1401  if (!ost->frame_number && ist->pts < of->start_time &&
1402  !ost->copy_prior_start)
1403  return;
1404  } else {
1405  if (!ost->frame_number && pkt->pts < ist_tb_start_time &&
1406  !ost->copy_prior_start)
1407  return;
1408  }
1409 
1410  if (of->recording_time != INT64_MAX &&
1411  ist->pts >= of->recording_time + of->start_time) {
1412  close_output_stream(ost);
1413  return;
1414  }
1415 
1416  /* force the input stream PTS */
1417  if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1418  audio_size += pkt->size;
1419  else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1420  video_size += pkt->size;
1421  ost->sync_opts++;
1422  } else if (ost->st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
1423  subtitle_size += pkt->size;
1424  }
1425 
1426  if (pkt->pts != AV_NOPTS_VALUE)
1427  opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1428  else
1429  opkt.pts = AV_NOPTS_VALUE;
1430 
1431  if (pkt->dts == AV_NOPTS_VALUE)
1432  opkt.dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ost->st->time_base);
1433  else
1434  opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1435  opkt.dts -= ost_tb_start_time;
1436 
1437  if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && pkt->dts != AV_NOPTS_VALUE) {
1438  int duration = av_get_audio_frame_duration(ist->st->codec, pkt->size);
1439  if(!duration)
1440  duration = ist->st->codec->frame_size;
1441  opkt.dts = opkt.pts = av_rescale_delta(ist->st->time_base, pkt->dts,
1443  ost->st->time_base) - ost_tb_start_time;
1444  }
1445 
1446  opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1447  opkt.flags = pkt->flags;
1448 
1449  // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1450  if ( ost->st->codec->codec_id != AV_CODEC_ID_H264
1451  && ost->st->codec->codec_id != AV_CODEC_ID_MPEG1VIDEO
1452  && ost->st->codec->codec_id != AV_CODEC_ID_MPEG2VIDEO
1453  && ost->st->codec->codec_id != AV_CODEC_ID_VC1
1454  ) {
1455  if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY)) {
1456  opkt.buf = av_buffer_create(opkt.data, opkt.size, av_buffer_default_free, NULL, 0);
1457  if (!opkt.buf)
1458  exit_program(1);
1459  }
1460  } else {
1461  opkt.data = pkt->data;
1462  opkt.size = pkt->size;
1463  }
1464 
1465  if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (of->ctx->oformat->flags & AVFMT_RAWPICTURE)) {
1466  /* store AVPicture in AVPacket, as expected by the output format */
1467  avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
1468  opkt.data = (uint8_t *)&pict;
1469  opkt.size = sizeof(AVPicture);
1470  opkt.flags |= AV_PKT_FLAG_KEY;
1471  }
1472 
1473  write_frame(of->ctx, &opkt, ost);
1474  ost->st->codec->frame_number++;
1475 }
1476 
1478 {
1479  AVCodecContext *dec = ist->st->codec;
1480 
1481  if (!dec->channel_layout) {
1482  char layout_name[256];
1483 
1484  if (dec->channels > ist->guess_layout_max)
1485  return 0;
1487  if (!dec->channel_layout)
1488  return 0;
1489  av_get_channel_layout_string(layout_name, sizeof(layout_name),
1490  dec->channels, dec->channel_layout);
1491  av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for Input Stream "
1492  "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
1493  }
1494  return 1;
1495 }
1496 
1497 static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1498 {
1499  AVFrame *decoded_frame, *f;
1500  AVCodecContext *avctx = ist->st->codec;
1501  int i, ret, err = 0, resample_changed;
1502  AVRational decoded_frame_tb;
1503 
1504  if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1505  return AVERROR(ENOMEM);
1506  if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
1507  return AVERROR(ENOMEM);
1508  decoded_frame = ist->decoded_frame;
1509 
1510  update_benchmark(NULL);
1511  ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
1512  update_benchmark("decode_audio %d.%d", ist->file_index, ist->st->index);
1513 
1514  if (ret >= 0 && avctx->sample_rate <= 0) {
1515  av_log(avctx, AV_LOG_ERROR, "Sample rate %d invalid\n", avctx->sample_rate);
1516  ret = AVERROR_INVALIDDATA;
1517  }
1518 
1519  if (*got_output || ret<0 || pkt->size)
1520  decode_error_stat[ret<0] ++;
1521 
1522  if (!*got_output || ret < 0) {
1523  if (!pkt->size) {
1524  for (i = 0; i < ist->nb_filters; i++)
1525 #if 1
1526  av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1527 #else
1528  av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
1529 #endif
1530  }
1531  return ret;
1532  }
1533 
1534 #if 1
1535  /* increment next_dts to use for the case where the input stream does not
1536  have timestamps or there are multiple frames in the packet */
1537  ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1538  avctx->sample_rate;
1539  ist->next_dts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1540  avctx->sample_rate;
1541 #endif
1542 
1543  resample_changed = ist->resample_sample_fmt != decoded_frame->format ||
1544  ist->resample_channels != avctx->channels ||
1545  ist->resample_channel_layout != decoded_frame->channel_layout ||
1546  ist->resample_sample_rate != decoded_frame->sample_rate;
1547  if (resample_changed) {
1548  char layout1[64], layout2[64];
1549 
1550  if (!guess_input_channel_layout(ist)) {
1551  av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
1552  "layout for Input Stream #%d.%d\n", ist->file_index,
1553  ist->st->index);
1554  exit_program(1);
1555  }
1556  decoded_frame->channel_layout = avctx->channel_layout;
1557 
1558  av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels,
1560  av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels,
1561  decoded_frame->channel_layout);
1562 
1563  av_log(NULL, AV_LOG_INFO,
1564  "Input stream #%d:%d frame changed from rate:%d fmt:%s ch:%d chl:%s to rate:%d fmt:%s ch:%d chl:%s\n",
1565  ist->file_index, ist->st->index,
1567  ist->resample_channels, layout1,
1568  decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format),
1569  avctx->channels, layout2);
1570 
1571  ist->resample_sample_fmt = decoded_frame->format;
1572  ist->resample_sample_rate = decoded_frame->sample_rate;
1573  ist->resample_channel_layout = decoded_frame->channel_layout;
1574  ist->resample_channels = avctx->channels;
1575 
1576  for (i = 0; i < nb_filtergraphs; i++)
1577  if (ist_in_filtergraph(filtergraphs[i], ist)) {
1578  FilterGraph *fg = filtergraphs[i];
1579  int j;
1580  if (configure_filtergraph(fg) < 0) {
1581  av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1582  exit_program(1);
1583  }
1584  for (j = 0; j < fg->nb_outputs; j++) {
1585  OutputStream *ost = fg->outputs[j]->ost;
1586  if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
1589  ost->st->codec->frame_size);
1590  }
1591  }
1592  }
1593 
1594  /* if the decoder provides a pts, use it instead of the last packet pts.
1595  the decoder could be delaying output by a packet or more. */
1596  if (decoded_frame->pts != AV_NOPTS_VALUE) {
1597  ist->dts = ist->next_dts = ist->pts = ist->next_pts = av_rescale_q(decoded_frame->pts, avctx->time_base, AV_TIME_BASE_Q);
1598  decoded_frame_tb = avctx->time_base;
1599  } else if (decoded_frame->pkt_pts != AV_NOPTS_VALUE) {
1600  decoded_frame->pts = decoded_frame->pkt_pts;
1601  pkt->pts = AV_NOPTS_VALUE;
1602  decoded_frame_tb = ist->st->time_base;
1603  } else if (pkt->pts != AV_NOPTS_VALUE) {
1604  decoded_frame->pts = pkt->pts;
1605  pkt->pts = AV_NOPTS_VALUE;
1606  decoded_frame_tb = ist->st->time_base;
1607  }else {
1608  decoded_frame->pts = ist->dts;
1609  decoded_frame_tb = AV_TIME_BASE_Q;
1610  }
1611  if (decoded_frame->pts != AV_NOPTS_VALUE)
1612  decoded_frame->pts = av_rescale_delta(decoded_frame_tb, decoded_frame->pts,
1613  (AVRational){1, ist->st->codec->sample_rate}, decoded_frame->nb_samples, &ist->filter_in_rescale_delta_last,
1614  (AVRational){1, ist->st->codec->sample_rate});
1615  for (i = 0; i < ist->nb_filters; i++) {
1616  if (i < ist->nb_filters - 1) {
1617  f = ist->filter_frame;
1618  err = av_frame_ref(f, decoded_frame);
1619  if (err < 0)
1620  break;
1621  } else
1622  f = decoded_frame;
1623  err = av_buffersrc_add_frame_flags(ist->filters[i]->filter, f,
1625  if (err == AVERROR_EOF)
1626  err = 0; /* ignore */
1627  if (err < 0)
1628  break;
1629  }
1630  decoded_frame->pts = AV_NOPTS_VALUE;
1631 
1632  av_frame_unref(ist->filter_frame);
1633  av_frame_unref(decoded_frame);
1634  return err < 0 ? err : ret;
1635 }
1636 
1637 static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output)
1638 {
1639  AVFrame *decoded_frame, *f;
1640  void *buffer_to_free = NULL;
1641  int i, ret = 0, err = 0, resample_changed;
1642  int64_t best_effort_timestamp;
1643  AVRational *frame_sample_aspect;
1644 
1645  if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
1646  return AVERROR(ENOMEM);
1647  if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
1648  return AVERROR(ENOMEM);
1649  decoded_frame = ist->decoded_frame;
1650  pkt->dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
1651 
1652  update_benchmark(NULL);
1653  ret = avcodec_decode_video2(ist->st->codec,
1654  decoded_frame, got_output, pkt);
1655  update_benchmark("decode_video %d.%d", ist->file_index, ist->st->index);
1656 
1657  if (*got_output || ret<0 || pkt->size)
1658  decode_error_stat[ret<0] ++;
1659 
1660  if (!*got_output || ret < 0) {
1661  if (!pkt->size) {
1662  for (i = 0; i < ist->nb_filters; i++)
1663 #if 1
1664  av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1665 #else
1666  av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
1667 #endif
1668  }
1669  return ret;
1670  }
1671 
1672  if(ist->top_field_first>=0)
1673  decoded_frame->top_field_first = ist->top_field_first;
1674 
1675  best_effort_timestamp= av_frame_get_best_effort_timestamp(decoded_frame);
1676  if(best_effort_timestamp != AV_NOPTS_VALUE)
1677  ist->next_pts = ist->pts = av_rescale_q(decoded_frame->pts = best_effort_timestamp, ist->st->time_base, AV_TIME_BASE_Q);
1678 
1679  if (debug_ts) {
1680  av_log(NULL, AV_LOG_INFO, "decoder -> ist_index:%d type:video "
1681  "frame_pts:%s frame_pts_time:%s best_effort_ts:%"PRId64" best_effort_ts_time:%s keyframe:%d frame_type:%d \n",
1682  ist->st->index, av_ts2str(decoded_frame->pts),
1683  av_ts2timestr(decoded_frame->pts, &ist->st->time_base),
1684  best_effort_timestamp,
1685  av_ts2timestr(best_effort_timestamp, &ist->st->time_base),
1686  decoded_frame->key_frame, decoded_frame->pict_type);
1687  }
1688 
1689  pkt->size = 0;
1690 
1691  if (ist->st->sample_aspect_ratio.num)
1692  decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
1693 
1694  resample_changed = ist->resample_width != decoded_frame->width ||
1695  ist->resample_height != decoded_frame->height ||
1696  ist->resample_pix_fmt != decoded_frame->format;
1697  if (resample_changed) {
1698  av_log(NULL, AV_LOG_INFO,
1699  "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1700  ist->file_index, ist->st->index,
1702  decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
1703 
1704  ist->resample_width = decoded_frame->width;
1705  ist->resample_height = decoded_frame->height;
1706  ist->resample_pix_fmt = decoded_frame->format;
1707 
1708  for (i = 0; i < nb_filtergraphs; i++) {
1709  if (ist_in_filtergraph(filtergraphs[i], ist) && ist->reinit_filters &&
1710  configure_filtergraph(filtergraphs[i]) < 0) {
1711  av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1712  exit_program(1);
1713  }
1714  }
1715  }
1716 
1717  frame_sample_aspect= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "sample_aspect_ratio");
1718  for (i = 0; i < ist->nb_filters; i++) {
1719  if (!frame_sample_aspect->num)
1720  *frame_sample_aspect = ist->st->sample_aspect_ratio;
1721 
1722  if (i < ist->nb_filters - 1) {
1723  f = ist->filter_frame;
1724  err = av_frame_ref(f, decoded_frame);
1725  if (err < 0)
1726  break;
1727  } else
1728  f = decoded_frame;
1730  if (ret == AVERROR_EOF) {
1731  ret = 0; /* ignore */
1732  } else if (ret < 0) {
1733  av_log(NULL, AV_LOG_FATAL,
1734  "Failed to inject frame into filter network: %s\n", av_err2str(ret));
1735  exit_program(1);
1736  }
1737  }
1738 
1740  av_frame_unref(decoded_frame);
1741  av_free(buffer_to_free);
1742  return err < 0 ? err : ret;
1743 }
1744 
1745 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
1746 {
1747  AVSubtitle subtitle;
1748  int i, ret = avcodec_decode_subtitle2(ist->st->codec,
1749  &subtitle, got_output, pkt);
1750 
1751  if (*got_output || ret<0 || pkt->size)
1752  decode_error_stat[ret<0] ++;
1753 
1754  if (ret < 0 || !*got_output) {
1755  if (!pkt->size)
1756  sub2video_flush(ist);
1757  return ret;
1758  }
1759 
1760  if (ist->fix_sub_duration) {
1761  if (ist->prev_sub.got_output) {
1762  int end = av_rescale(subtitle.pts - ist->prev_sub.subtitle.pts,
1763  1000, AV_TIME_BASE);
1764  if (end < ist->prev_sub.subtitle.end_display_time) {
1765  av_log(ist->st->codec, AV_LOG_DEBUG,
1766  "Subtitle duration reduced from %d to %d\n",
1767  ist->prev_sub.subtitle.end_display_time, end);
1769  }
1770  }
1771  FFSWAP(int, *got_output, ist->prev_sub.got_output);
1772  FFSWAP(int, ret, ist->prev_sub.ret);
1773  FFSWAP(AVSubtitle, subtitle, ist->prev_sub.subtitle);
1774  }
1775 
1776  sub2video_update(ist, &subtitle);
1777 
1778  if (!*got_output || !subtitle.num_rects)
1779  return ret;
1780 
1781  for (i = 0; i < nb_output_streams; i++) {
1782  OutputStream *ost = output_streams[i];
1783 
1784  if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1785  continue;
1786 
1787  do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle);
1788  }
1789 
1790  avsubtitle_free(&subtitle);
1791  return ret;
1792 }
1793 
1794 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1795 static int output_packet(InputStream *ist, const AVPacket *pkt)
1796 {
1797  int ret = 0, i;
1798  int got_output = 0;
1799 
1800  AVPacket avpkt;
1801  if (!ist->saw_first_ts) {
1802  ist->dts = ist->st->avg_frame_rate.num ? - ist->st->codec->has_b_frames * AV_TIME_BASE / av_q2d(ist->st->avg_frame_rate) : 0;
1803  ist->pts = 0;
1804  if (pkt != NULL && pkt->pts != AV_NOPTS_VALUE && !ist->decoding_needed) {
1805  ist->dts += av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1806  ist->pts = ist->dts; //unused but better to set it to a value thats not totally wrong
1807  }
1808  ist->saw_first_ts = 1;
1809  }
1810 
1811  if (ist->next_dts == AV_NOPTS_VALUE)
1812  ist->next_dts = ist->dts;
1813  if (ist->next_pts == AV_NOPTS_VALUE)
1814  ist->next_pts = ist->pts;
1815 
1816  if (pkt == NULL) {
1817  /* EOF handling */
1818  av_init_packet(&avpkt);
1819  avpkt.data = NULL;
1820  avpkt.size = 0;
1821  goto handle_eof;
1822  } else {
1823  avpkt = *pkt;
1824  }
1825 
1826  if (pkt->dts != AV_NOPTS_VALUE) {
1827  ist->next_dts = ist->dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1828  if (ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
1829  ist->next_pts = ist->pts = ist->dts;
1830  }
1831 
1832  // while we have more to decode or while the decoder did output something on EOF
1833  while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
1834  int duration;
1835  handle_eof:
1836 
1837  ist->pts = ist->next_pts;
1838  ist->dts = ist->next_dts;
1839 
1840  if (avpkt.size && avpkt.size != pkt->size) {
1842  "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1843  ist->showed_multi_packet_warning = 1;
1844  }
1845 
1846  switch (ist->st->codec->codec_type) {
1847  case AVMEDIA_TYPE_AUDIO:
1848  ret = decode_audio (ist, &avpkt, &got_output);
1849  break;
1850  case AVMEDIA_TYPE_VIDEO:
1851  ret = decode_video (ist, &avpkt, &got_output);
1852  if (avpkt.duration) {
1853  duration = av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
1854  } else if(ist->st->codec->time_base.num != 0 && ist->st->codec->time_base.den != 0) {
1855  int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1856  duration = ((int64_t)AV_TIME_BASE *
1857  ist->st->codec->time_base.num * ticks) /
1858  ist->st->codec->time_base.den;
1859  } else
1860  duration = 0;
1861 
1862  if(ist->dts != AV_NOPTS_VALUE && duration) {
1863  ist->next_dts += duration;
1864  }else
1865  ist->next_dts = AV_NOPTS_VALUE;
1866 
1867  if (got_output)
1868  ist->next_pts += duration; //FIXME the duration is not correct in some cases
1869  break;
1870  case AVMEDIA_TYPE_SUBTITLE:
1871  ret = transcode_subtitles(ist, &avpkt, &got_output);
1872  break;
1873  default:
1874  return -1;
1875  }
1876 
1877  if (ret < 0)
1878  return ret;
1879 
1880  avpkt.dts=
1881  avpkt.pts= AV_NOPTS_VALUE;
1882 
1883  // touch data and size only if not EOF
1884  if (pkt) {
1885  if(ist->st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
1886  ret = avpkt.size;
1887  avpkt.data += ret;
1888  avpkt.size -= ret;
1889  }
1890  if (!got_output) {
1891  continue;
1892  }
1893  }
1894 
1895  /* handle stream copy */
1896  if (!ist->decoding_needed) {
1897  ist->dts = ist->next_dts;
1898  switch (ist->st->codec->codec_type) {
1899  case AVMEDIA_TYPE_AUDIO:
1900  ist->next_dts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1901  ist->st->codec->sample_rate;
1902  break;
1903  case AVMEDIA_TYPE_VIDEO:
1904  if (ist->framerate.num) {
1905  // TODO: Remove work-around for c99-to-c89 issue 7
1906  AVRational time_base_q = AV_TIME_BASE_Q;
1907  int64_t next_dts = av_rescale_q(ist->next_dts, time_base_q, av_inv_q(ist->framerate));
1908  ist->next_dts = av_rescale_q(next_dts + 1, av_inv_q(ist->framerate), time_base_q);
1909  } else if (pkt->duration) {
1910  ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
1911  } else if(ist->st->codec->time_base.num != 0) {
1912  int ticks= ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
1913  ist->next_dts += ((int64_t)AV_TIME_BASE *
1914  ist->st->codec->time_base.num * ticks) /
1915  ist->st->codec->time_base.den;
1916  }
1917  break;
1918  }
1919  ist->pts = ist->dts;
1920  ist->next_pts = ist->next_dts;
1921  }
1922  for (i = 0; pkt && i < nb_output_streams; i++) {
1923  OutputStream *ost = output_streams[i];
1924 
1925  if (!check_output_constraints(ist, ost) || ost->encoding_needed)
1926  continue;
1927 
1928  do_streamcopy(ist, ost, pkt);
1929  }
1930 
1931  return 0;
1932 }
1933 
1934 static void print_sdp(void)
1935 {
1936  char sdp[16384];
1937  int i;
1938  AVFormatContext **avc = av_malloc(sizeof(*avc) * nb_output_files);
1939 
1940  if (!avc)
1941  exit_program(1);
1942  for (i = 0; i < nb_output_files; i++)
1943  avc[i] = output_files[i]->ctx;
1944 
1945  av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
1946  printf("SDP:\n%s\n", sdp);
1947  fflush(stdout);
1948  av_freep(&avc);
1949 }
1950 
1951 static int init_input_stream(int ist_index, char *error, int error_len)
1952 {
1953  int ret;
1954  InputStream *ist = input_streams[ist_index];
1955 
1956  if (ist->decoding_needed) {
1957  AVCodec *codec = ist->dec;
1958  if (!codec) {
1959  snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
1960  avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
1961  return AVERROR(EINVAL);
1962  }
1963 
1964  av_opt_set_int(ist->st->codec, "refcounted_frames", 1, 0);
1965 
1966  if (!av_dict_get(ist->opts, "threads", NULL, 0))
1967  av_dict_set(&ist->opts, "threads", "auto", 0);
1968  if ((ret = avcodec_open2(ist->st->codec, codec, &ist->opts)) < 0) {
1969  char errbuf[128];
1970  if (ret == AVERROR_EXPERIMENTAL)
1971  abort_codec_experimental(codec, 0);
1972 
1973  av_strerror(ret, errbuf, sizeof(errbuf));
1974 
1975  snprintf(error, error_len,
1976  "Error while opening decoder for input stream "
1977  "#%d:%d : %s",
1978  ist->file_index, ist->st->index, errbuf);
1979  return ret;
1980  }
1981  assert_avoptions(ist->opts);
1982  }
1983 
1984  ist->next_pts = AV_NOPTS_VALUE;
1985  ist->next_dts = AV_NOPTS_VALUE;
1986  ist->is_start = 1;
1987 
1988  return 0;
1989 }
1990 
1992 {
1993  if (ost->source_index >= 0)
1994  return input_streams[ost->source_index];
1995  return NULL;
1996 }
1997 
1998 static int compare_int64(const void *a, const void *b)
1999 {
2000  int64_t va = *(int64_t *)a, vb = *(int64_t *)b;
2001  return va < vb ? -1 : va > vb ? +1 : 0;
2002 }
2003 
2004 static void parse_forced_key_frames(char *kf, OutputStream *ost,
2005  AVCodecContext *avctx)
2006 {
2007  char *p;
2008  int n = 1, i, size, index = 0;
2009  int64_t t, *pts;
2010 
2011  for (p = kf; *p; p++)
2012  if (*p == ',')
2013  n++;
2014  size = n;
2015  pts = av_malloc(sizeof(*pts) * size);
2016  if (!pts) {
2017  av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
2018  exit_program(1);
2019  }
2020 
2021  p = kf;
2022  for (i = 0; i < n; i++) {
2023  char *next = strchr(p, ',');
2024 
2025  if (next)
2026  *next++ = 0;
2027 
2028  if (!memcmp(p, "chapters", 8)) {
2029 
2030  AVFormatContext *avf = output_files[ost->file_index]->ctx;
2031  int j;
2032 
2033  if (avf->nb_chapters > INT_MAX - size ||
2034  !(pts = av_realloc_f(pts, size += avf->nb_chapters - 1,
2035  sizeof(*pts)))) {
2036  av_log(NULL, AV_LOG_FATAL,
2037  "Could not allocate forced key frames array.\n");
2038  exit_program(1);
2039  }
2040  t = p[8] ? parse_time_or_die("force_key_frames", p + 8, 1) : 0;
2041  t = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
2042 
2043  for (j = 0; j < avf->nb_chapters; j++) {
2044  AVChapter *c = avf->chapters[j];
2045  av_assert1(index < size);
2046  pts[index++] = av_rescale_q(c->start, c->time_base,
2047  avctx->time_base) + t;
2048  }
2049 
2050  } else {
2051 
2052  t = parse_time_or_die("force_key_frames", p, 1);
2053  av_assert1(index < size);
2054  pts[index++] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
2055 
2056  }
2057 
2058  p = next;
2059  }
2060 
2061  av_assert0(index == size);
2062  qsort(pts, size, sizeof(*pts), compare_int64);
2063  ost->forced_kf_count = size;
2064  ost->forced_kf_pts = pts;
2065 }
2066 
2067 static void report_new_stream(int input_index, AVPacket *pkt)
2068 {
2069  InputFile *file = input_files[input_index];
2070  AVStream *st = file->ctx->streams[pkt->stream_index];
2071 
2072  if (pkt->stream_index < file->nb_streams_warn)
2073  return;
2074  av_log(file->ctx, AV_LOG_WARNING,
2075  "New %s stream %d:%d at pos:%"PRId64" and DTS:%ss\n",
2077  input_index, pkt->stream_index,
2078  pkt->pos, av_ts2timestr(pkt->dts, &st->time_base));
2079  file->nb_streams_warn = pkt->stream_index + 1;
2080 }
2081 
2082 static int transcode_init(void)
2083 {
2084  int ret = 0, i, j, k;
2085  AVFormatContext *oc;
2086  AVCodecContext *codec;
2087  OutputStream *ost;
2088  InputStream *ist;
2089  char error[1024];
2090  int want_sdp = 1;
2091 
2092  /* init framerate emulation */
2093  for (i = 0; i < nb_input_files; i++) {
2094  InputFile *ifile = input_files[i];
2095  if (ifile->rate_emu)
2096  for (j = 0; j < ifile->nb_streams; j++)
2097  input_streams[j + ifile->ist_index]->start = av_gettime();
2098  }
2099 
2100  /* output stream init */
2101  for (i = 0; i < nb_output_files; i++) {
2102  oc = output_files[i]->ctx;
2103  if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
2104  av_dump_format(oc, i, oc->filename, 1);
2105  av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2106  return AVERROR(EINVAL);
2107  }
2108  }
2109 
2110  /* init complex filtergraphs */
2111  for (i = 0; i < nb_filtergraphs; i++)
2112  if ((ret = avfilter_graph_config(filtergraphs[i]->graph, NULL)) < 0)
2113  return ret;
2114 
2115  /* for each output stream, we compute the right encoding parameters */
2116  for (i = 0; i < nb_output_streams; i++) {
2117  AVCodecContext *icodec = NULL;
2118  ost = output_streams[i];
2119  oc = output_files[ost->file_index]->ctx;
2120  ist = get_input_stream(ost);
2121 
2122  if (ost->attachment_filename)
2123  continue;
2124 
2125  codec = ost->st->codec;
2126 
2127  if (ist) {
2128  icodec = ist->st->codec;
2129 
2130  ost->st->disposition = ist->st->disposition;
2131  codec->bits_per_raw_sample = icodec->bits_per_raw_sample;
2133  }
2134 
2135  if (ost->stream_copy) {
2136  AVRational sar;
2137  uint64_t extra_size;
2138 
2139  av_assert0(ist && !ost->filter);
2140 
2141  extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2142 
2143  if (extra_size > INT_MAX) {
2144  return AVERROR(EINVAL);
2145  }
2146 
2147  /* if stream_copy is selected, no need to decode or encode */
2148  codec->codec_id = icodec->codec_id;
2149  codec->codec_type = icodec->codec_type;
2150 
2151  if (!codec->codec_tag) {
2152  unsigned int codec_tag;
2153  if (!oc->oformat->codec_tag ||
2154  av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2155  !av_codec_get_tag2(oc->oformat->codec_tag, icodec->codec_id, &codec_tag))
2156  codec->codec_tag = icodec->codec_tag;
2157  }
2158 
2159  codec->bit_rate = icodec->bit_rate;
2160  codec->rc_max_rate = icodec->rc_max_rate;
2161  codec->rc_buffer_size = icodec->rc_buffer_size;
2162  codec->field_order = icodec->field_order;
2163  codec->extradata = av_mallocz(extra_size);
2164  if (!codec->extradata) {
2165  return AVERROR(ENOMEM);
2166  }
2167  memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2168  codec->extradata_size= icodec->extradata_size;
2170 
2171  codec->time_base = ist->st->time_base;
2172  /*
2173  * Avi is a special case here because it supports variable fps but
2174  * having the fps and timebase differe significantly adds quite some
2175  * overhead
2176  */
2177  if(!strcmp(oc->oformat->name, "avi")) {
2178  if ( copy_tb<0 && av_q2d(ist->st->r_frame_rate) >= av_q2d(ist->st->avg_frame_rate)
2179  && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(ist->st->time_base)
2180  && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(icodec->time_base)
2181  && av_q2d(ist->st->time_base) < 1.0/500 && av_q2d(icodec->time_base) < 1.0/500
2182  || copy_tb==2){
2183  codec->time_base.num = ist->st->r_frame_rate.den;
2184  codec->time_base.den = 2*ist->st->r_frame_rate.num;
2185  codec->ticks_per_frame = 2;
2186  } else if ( copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base)
2187  && av_q2d(ist->st->time_base) < 1.0/500
2188  || copy_tb==0){
2189  codec->time_base = icodec->time_base;
2190  codec->time_base.num *= icodec->ticks_per_frame;
2191  codec->time_base.den *= 2;
2192  codec->ticks_per_frame = 2;
2193  }
2194  } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)
2195  && strcmp(oc->oformat->name, "mov") && strcmp(oc->oformat->name, "mp4") && strcmp(oc->oformat->name, "3gp")
2196  && strcmp(oc->oformat->name, "3g2") && strcmp(oc->oformat->name, "psp") && strcmp(oc->oformat->name, "ipod")
2197  && strcmp(oc->oformat->name, "f4v")
2198  ) {
2199  if( copy_tb<0 && icodec->time_base.den
2200  && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base)
2201  && av_q2d(ist->st->time_base) < 1.0/500
2202  || copy_tb==0){
2203  codec->time_base = icodec->time_base;
2204  codec->time_base.num *= icodec->ticks_per_frame;
2205  }
2206  }
2207  if ( codec->codec_tag == AV_RL32("tmcd")
2208  && icodec->time_base.num < icodec->time_base.den
2209  && icodec->time_base.num > 0
2210  && 121LL*icodec->time_base.num > icodec->time_base.den) {
2211  codec->time_base = icodec->time_base;
2212  }
2213 
2214  if (ist && !ost->frame_rate.num)
2215  ost->frame_rate = ist->framerate;
2216  if(ost->frame_rate.num)
2217  codec->time_base = av_inv_q(ost->frame_rate);
2218 
2219  av_reduce(&codec->time_base.num, &codec->time_base.den,
2220  codec->time_base.num, codec->time_base.den, INT_MAX);
2221 
2222  switch (codec->codec_type) {
2223  case AVMEDIA_TYPE_AUDIO:
2224  if (audio_volume != 256) {
2225  av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2226  exit_program(1);
2227  }
2228  codec->channel_layout = icodec->channel_layout;
2229  codec->sample_rate = icodec->sample_rate;
2230  codec->channels = icodec->channels;
2231  codec->frame_size = icodec->frame_size;
2232  codec->audio_service_type = icodec->audio_service_type;
2233  codec->block_align = icodec->block_align;
2234  if((codec->block_align == 1 || codec->block_align == 1152 || codec->block_align == 576) && codec->codec_id == AV_CODEC_ID_MP3)
2235  codec->block_align= 0;
2236  if(codec->codec_id == AV_CODEC_ID_AC3)
2237  codec->block_align= 0;
2238  break;
2239  case AVMEDIA_TYPE_VIDEO:
2240  codec->pix_fmt = icodec->pix_fmt;
2241  codec->width = icodec->width;
2242  codec->height = icodec->height;
2243  codec->has_b_frames = icodec->has_b_frames;
2244  if (ost->frame_aspect_ratio.num) { // overridden by the -aspect cli option
2245  sar =
2247  (AVRational){ codec->height, codec->width });
2248  av_log(NULL, AV_LOG_WARNING, "Overriding aspect ratio "
2249  "with stream copy may produce invalid files\n");
2250  }
2251  else if (ist->st->sample_aspect_ratio.num)
2252  sar = ist->st->sample_aspect_ratio;
2253  else
2254  sar = icodec->sample_aspect_ratio;
2255  ost->st->sample_aspect_ratio = codec->sample_aspect_ratio = sar;
2256  ost->st->avg_frame_rate = ist->st->avg_frame_rate;
2257  break;
2258  case AVMEDIA_TYPE_SUBTITLE:
2259  codec->width = icodec->width;
2260  codec->height = icodec->height;
2261  break;
2262  case AVMEDIA_TYPE_DATA:
2264  break;
2265  default:
2266  abort();
2267  }
2268  } else {
2269  if (!ost->enc)
2270  ost->enc = avcodec_find_encoder(codec->codec_id);
2271  if (!ost->enc) {
2272  /* should only happen when a default codec is not present. */
2273  snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
2274  avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
2275  ret = AVERROR(EINVAL);
2276  goto dump_format;
2277  }
2278 
2279  if (ist)
2280  ist->decoding_needed++;
2281  ost->encoding_needed = 1;
2282 
2283  if (!ost->filter &&
2284  (codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2285  codec->codec_type == AVMEDIA_TYPE_AUDIO)) {
2286  FilterGraph *fg;
2287  fg = init_simple_filtergraph(ist, ost);
2288  if (configure_filtergraph(fg)) {
2289  av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2290  exit_program(1);
2291  }
2292  }
2293 
2294  if (codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2295  if (ost->filter && !ost->frame_rate.num)
2297  if (ist && !ost->frame_rate.num)
2298  ost->frame_rate = ist->framerate;
2299  if (ist && !ost->frame_rate.num)
2300  ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25, 1};
2301 // ost->frame_rate = ist->st->avg_frame_rate.num ? ist->st->avg_frame_rate : (AVRational){25, 1};
2302  if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2304  ost->frame_rate = ost->enc->supported_framerates[idx];
2305  }
2306  }
2307 
2308  switch (codec->codec_type) {
2309  case AVMEDIA_TYPE_AUDIO:
2310  codec->sample_fmt = ost->filter->filter->inputs[0]->format;
2311  codec->sample_rate = ost->filter->filter->inputs[0]->sample_rate;
2312  codec->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
2314  codec->time_base = (AVRational){ 1, codec->sample_rate };
2315  break;
2316  case AVMEDIA_TYPE_VIDEO:
2317  codec->time_base = av_inv_q(ost->frame_rate);
2318  if (ost->filter && !(codec->time_base.num && codec->time_base.den))
2319  codec->time_base = ost->filter->filter->inputs[0]->time_base;
2320  if ( av_q2d(codec->time_base) < 0.001 && video_sync_method != VSYNC_PASSTHROUGH
2322  av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not efficiently supporting it.\n"
2323  "Please consider specifying a lower framerate, a different muxer or -vsync 2\n");
2324  }
2325  for (j = 0; j < ost->forced_kf_count; j++)
2326  ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
2328  codec->time_base);
2329 
2330  codec->width = ost->filter->filter->inputs[0]->w;
2331  codec->height = ost->filter->filter->inputs[0]->h;
2332  codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
2333  ost->frame_aspect_ratio.num ? // overridden by the -aspect cli option
2334  av_mul_q(ost->frame_aspect_ratio, (AVRational){ codec->height, codec->width }) :
2336  if (!strncmp(ost->enc->name, "libx264", 7) &&
2337  codec->pix_fmt == AV_PIX_FMT_NONE &&
2339  av_log(NULL, AV_LOG_INFO,
2340  "No pixel format specified, %s for H.264 encoding chosen.\n"
2341  "Use -pix_fmt yuv420p for compatibility with outdated media players.\n",
2343  codec->pix_fmt = ost->filter->filter->inputs[0]->format;
2344 
2345  if (!icodec ||
2346  codec->width != icodec->width ||
2347  codec->height != icodec->height ||
2348  codec->pix_fmt != icodec->pix_fmt) {
2350  }
2351 
2352  if (ost->forced_keyframes) {
2353  if (!strncmp(ost->forced_keyframes, "expr:", 5)) {
2355  forced_keyframes_const_names, NULL, NULL, NULL, NULL, 0, NULL);
2356  if (ret < 0) {
2357  av_log(NULL, AV_LOG_ERROR,
2358  "Invalid force_key_frames expression '%s'\n", ost->forced_keyframes+5);
2359  return ret;
2360  }
2365  } else {
2367  }
2368  }
2369  break;
2370  case AVMEDIA_TYPE_SUBTITLE:
2371  codec->time_base = (AVRational){1, 1000};
2372  if (!codec->width) {
2373  codec->width = input_streams[ost->source_index]->st->codec->width;
2374  codec->height = input_streams[ost->source_index]->st->codec->height;
2375  }
2376  break;
2377  default:
2378  abort();
2379  break;
2380  }
2381  /* two pass mode */
2382  if (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2)) {
2383  char logfilename[1024];
2384  FILE *f;
2385 
2386  snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2387  ost->logfile_prefix ? ost->logfile_prefix :
2389  i);
2390  if (!strcmp(ost->enc->name, "libx264")) {
2391  av_dict_set(&ost->opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
2392  } else {
2393  if (codec->flags & CODEC_FLAG_PASS2) {
2394  char *logbuffer;
2395  size_t logbuffer_size;
2396  if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2397  av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2398  logfilename);
2399  exit_program(1);
2400  }
2401  codec->stats_in = logbuffer;
2402  }
2403  if (codec->flags & CODEC_FLAG_PASS1) {
2404  f = fopen(logfilename, "wb");
2405  if (!f) {
2406  av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2407  logfilename, strerror(errno));
2408  exit_program(1);
2409  }
2410  ost->logfile = f;
2411  }
2412  }
2413  }
2414  }
2415  }
2416 
2417  /* open each encoder */
2418  for (i = 0; i < nb_output_streams; i++) {
2419  ost = output_streams[i];
2420  if (ost->encoding_needed) {
2421  AVCodec *codec = ost->enc;
2422  AVCodecContext *dec = NULL;
2423 
2424  if ((ist = get_input_stream(ost)))
2425  dec = ist->st->codec;
2426  if (dec && dec->subtitle_header) {
2427  /* ASS code assumes this buffer is null terminated so add extra byte. */
2428  ost->st->codec->subtitle_header = av_mallocz(dec->subtitle_header_size + 1);
2429  if (!ost->st->codec->subtitle_header) {
2430  ret = AVERROR(ENOMEM);
2431  goto dump_format;
2432  }
2433  memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2434  ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2435  }
2436  if (!av_dict_get(ost->opts, "threads", NULL, 0))
2437  av_dict_set(&ost->opts, "threads", "auto", 0);
2438  if ((ret = avcodec_open2(ost->st->codec, codec, &ost->opts)) < 0) {
2439  if (ret == AVERROR_EXPERIMENTAL)
2440  abort_codec_experimental(codec, 1);
2441  snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2442  ost->file_index, ost->index);
2443  goto dump_format;
2444  }
2445  if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
2446  !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
2447  av_buffersink_set_frame_size(ost->filter->filter,
2448  ost->st->codec->frame_size);
2449  assert_avoptions(ost->opts);
2450  if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2451  av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2452  " It takes bits/s as argument, not kbits/s\n");
2453  extra_size += ost->st->codec->extradata_size;
2454 
2455  if (ost->st->codec->me_threshold)
2456  input_streams[ost->source_index]->st->codec->debug |= FF_DEBUG_MV;
2457  } else {
2458  av_opt_set_dict(ost->st->codec, &ost->opts);
2459  }
2460  }
2461 
2462  /* init input streams */
2463  for (i = 0; i < nb_input_streams; i++)
2464  if ((ret = init_input_stream(i, error, sizeof(error))) < 0) {
2465  for (i = 0; i < nb_output_streams; i++) {
2466  ost = output_streams[i];
2467  avcodec_close(ost->st->codec);
2468  }
2469  goto dump_format;
2470  }
2471 
2472  /* discard unused programs */
2473  for (i = 0; i < nb_input_files; i++) {
2474  InputFile *ifile = input_files[i];
2475  for (j = 0; j < ifile->ctx->nb_programs; j++) {
2476  AVProgram *p = ifile->ctx->programs[j];
2477  int discard = AVDISCARD_ALL;
2478 
2479  for (k = 0; k < p->nb_stream_indexes; k++)
2480  if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
2481  discard = AVDISCARD_DEFAULT;
2482  break;
2483  }
2484  p->discard = discard;
2485  }
2486  }
2487 
2488  /* open files and write file headers */
2489  for (i = 0; i < nb_output_files; i++) {
2490  oc = output_files[i]->ctx;
2491  oc->interrupt_callback = int_cb;
2492  if ((ret = avformat_write_header(oc, &output_files[i]->opts)) < 0) {
2493  char errbuf[128];
2494  av_strerror(ret, errbuf, sizeof(errbuf));
2495  snprintf(error, sizeof(error),
2496  "Could not write header for output file #%d "
2497  "(incorrect codec parameters ?): %s",
2498  i, errbuf);
2499  ret = AVERROR(EINVAL);
2500  goto dump_format;
2501  }
2502 // assert_avoptions(output_files[i]->opts);
2503  if (strcmp(oc->oformat->name, "rtp")) {
2504  want_sdp = 0;
2505  }
2506  }
2507 
2508  dump_format:
2509  /* dump the file output parameters - cannot be done before in case
2510  of stream copy */
2511  for (i = 0; i < nb_output_files; i++) {
2512  av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
2513  }
2514 
2515  /* dump the stream mapping */
2516  av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2517  for (i = 0; i < nb_input_streams; i++) {
2518  ist = input_streams[i];
2519 
2520  for (j = 0; j < ist->nb_filters; j++) {
2521  if (ist->filters[j]->graph->graph_desc) {
2522  av_log(NULL, AV_LOG_INFO, " Stream #%d:%d (%s) -> %s",
2523  ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
2524  ist->filters[j]->name);
2525  if (nb_filtergraphs > 1)
2526  av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
2527  av_log(NULL, AV_LOG_INFO, "\n");
2528  }
2529  }
2530  }
2531 
2532  for (i = 0; i < nb_output_streams; i++) {
2533  ost = output_streams[i];
2534 
2535  if (ost->attachment_filename) {
2536  /* an attached file */
2537  av_log(NULL, AV_LOG_INFO, " File %s -> Stream #%d:%d\n",
2538  ost->attachment_filename, ost->file_index, ost->index);
2539  continue;
2540  }
2541 
2542  if (ost->filter && ost->filter->graph->graph_desc) {
2543  /* output from a complex graph */
2544  av_log(NULL, AV_LOG_INFO, " %s", ost->filter->name);
2545  if (nb_filtergraphs > 1)
2546  av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
2547 
2548  av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
2549  ost->index, ost->enc ? ost->enc->name : "?");
2550  continue;
2551  }
2552 
2553  av_log(NULL, AV_LOG_INFO, " Stream #%d:%d -> #%d:%d",
2554  input_streams[ost->source_index]->file_index,
2555  input_streams[ost->source_index]->st->index,
2556  ost->file_index,
2557  ost->index);
2558  if (ost->sync_ist != input_streams[ost->source_index])
2559  av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2560  ost->sync_ist->file_index,
2561  ost->sync_ist->st->index);
2562  if (ost->stream_copy)
2563  av_log(NULL, AV_LOG_INFO, " (copy)");
2564  else
2565  av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index]->dec ?
2566  input_streams[ost->source_index]->dec->name : "?",
2567  ost->enc ? ost->enc->name : "?");
2568  av_log(NULL, AV_LOG_INFO, "\n");
2569  }
2570 
2571  if (ret) {
2572  av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2573  return ret;
2574  }
2575 
2576  if (want_sdp) {
2577  print_sdp();
2578  }
2579 
2580  return 0;
2581 }
2582 
2583 /* Return 1 if there remain streams where more output is wanted, 0 otherwise. */
2584 static int need_output(void)
2585 {
2586  int i;
2587 
2588  for (i = 0; i < nb_output_streams; i++) {
2589  OutputStream *ost = output_streams[i];
2590  OutputFile *of = output_files[ost->file_index];
2591  AVFormatContext *os = output_files[ost->file_index]->ctx;
2592 
2593  if (ost->finished ||
2594  (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2595  continue;
2596  if (ost->frame_number >= ost->max_frames) {
2597  int j;
2598  for (j = 0; j < of->ctx->nb_streams; j++)
2599  close_output_stream(output_streams[of->ost_index + j]);
2600  continue;
2601  }
2602 
2603  return 1;
2604  }
2605 
2606  return 0;
2607 }
2608 
2609 /**
2610  * Select the output stream to process.
2611  *
2612  * @return selected output stream, or NULL if none available
2613  */
2615 {
2616  int i;
2617  int64_t opts_min = INT64_MAX;
2618  OutputStream *ost_min = NULL;
2619 
2620  for (i = 0; i < nb_output_streams; i++) {
2621  OutputStream *ost = output_streams[i];
2622  int64_t opts = av_rescale_q(ost->st->cur_dts, ost->st->time_base,
2623  AV_TIME_BASE_Q);
2624  if (!ost->unavailable && !ost->finished && opts < opts_min) {
2625  opts_min = opts;
2626  ost_min = ost;
2627  }
2628  }
2629  return ost_min;
2630 }
2631 
2633 {
2634  int i, ret, key;
2635  static int64_t last_time;
2636  if (received_nb_signals)
2637  return AVERROR_EXIT;
2638  /* read_key() returns 0 on EOF */
2639  if(cur_time - last_time >= 100000 && !run_as_daemon){
2640  key = read_key();
2641  last_time = cur_time;
2642  }else
2643  key = -1;
2644  if (key == 'q')
2645  return AVERROR_EXIT;
2646  if (key == '+') av_log_set_level(av_log_get_level()+10);
2647  if (key == '-') av_log_set_level(av_log_get_level()-10);
2648  if (key == 's') qp_hist ^= 1;
2649  if (key == 'h'){
2650  if (do_hex_dump){
2651  do_hex_dump = do_pkt_dump = 0;
2652  } else if(do_pkt_dump){
2653  do_hex_dump = 1;
2654  } else
2655  do_pkt_dump = 1;
2657  }
2658  if (key == 'c' || key == 'C'){
2659  char buf[4096], target[64], command[256], arg[256] = {0};
2660  double time;
2661  int k, n = 0;
2662  fprintf(stderr, "\nEnter command: <target> <time> <command>[ <argument>]\n");
2663  i = 0;
2664  while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
2665  if (k > 0)
2666  buf[i++] = k;
2667  buf[i] = 0;
2668  if (k > 0 &&
2669  (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
2670  av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
2671  target, time, command, arg);
2672  for (i = 0; i < nb_filtergraphs; i++) {
2673  FilterGraph *fg = filtergraphs[i];
2674  if (fg->graph) {
2675  if (time < 0) {
2676  ret = avfilter_graph_send_command(fg->graph, target, command, arg, buf, sizeof(buf),
2677  key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
2678  fprintf(stderr, "Command reply for stream %d: ret:%d res:%s\n", i, ret, buf);
2679  } else {
2680  ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
2681  }
2682  }
2683  }
2684  } else {
2685  av_log(NULL, AV_LOG_ERROR,
2686  "Parse error, at least 3 arguments were expected, "
2687  "only %d given in string '%s'\n", n, buf);
2688  }
2689  }
2690  if (key == 'd' || key == 'D'){
2691  int debug=0;
2692  if(key == 'D') {
2693  debug = input_streams[0]->st->codec->debug<<1;
2694  if(!debug) debug = 1;
2695  while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
2696  debug += debug;
2697  }else
2698  if(scanf("%d", &debug)!=1)
2699  fprintf(stderr,"error parsing debug value\n");
2700  for(i=0;i<nb_input_streams;i++) {
2701  input_streams[i]->st->codec->debug = debug;
2702  }
2703  for(i=0;i<nb_output_streams;i++) {
2704  OutputStream *ost = output_streams[i];
2705  ost->st->codec->debug = debug;
2706  }
2707  if(debug) av_log_set_level(AV_LOG_DEBUG);
2708  fprintf(stderr,"debug=%d\n", debug);
2709  }
2710  if (key == '?'){
2711  fprintf(stderr, "key function\n"
2712  "? show this help\n"
2713  "+ increase verbosity\n"
2714  "- decrease verbosity\n"
2715  "c Send command to filtergraph\n"
2716  "D cycle through available debug modes\n"
2717  "h dump packets/hex press to cycle through the 3 states\n"
2718  "q quit\n"
2719  "s Show QP histogram\n"
2720  );
2721  }
2722  return 0;
2723 }
2724 
2725 #if HAVE_PTHREADS
2726 static void *input_thread(void *arg)
2727 {
2728  InputFile *f = arg;
2729  int ret = 0;
2730 
2731  while (!transcoding_finished && ret >= 0) {
2732  AVPacket pkt;
2733  ret = av_read_frame(f->ctx, &pkt);
2734 
2735  if (ret == AVERROR(EAGAIN)) {
2736  av_usleep(10000);
2737  ret = 0;
2738  continue;
2739  } else if (ret < 0)
2740  break;
2741 
2742  pthread_mutex_lock(&f->fifo_lock);
2743  while (!av_fifo_space(f->fifo))
2744  pthread_cond_wait(&f->fifo_cond, &f->fifo_lock);
2745 
2746  av_dup_packet(&pkt);
2747  av_fifo_generic_write(f->fifo, &pkt, sizeof(pkt), NULL);
2748 
2749  pthread_mutex_unlock(&f->fifo_lock);
2750  }
2751 
2752  f->finished = 1;
2753  return NULL;
2754 }
2755 
2756 static void free_input_threads(void)
2757 {
2758  int i;
2759 
2760  if (nb_input_files == 1)
2761  return;
2762 
2763  transcoding_finished = 1;
2764 
2765  for (i = 0; i < nb_input_files; i++) {
2766  InputFile *f = input_files[i];
2767  AVPacket pkt;
2768 
2769  if (!f->fifo || f->joined)
2770  continue;
2771 
2772  pthread_mutex_lock(&f->fifo_lock);
2773  while (av_fifo_size(f->fifo)) {
2774  av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2775  av_free_packet(&pkt);
2776  }
2777  pthread_cond_signal(&f->fifo_cond);
2778  pthread_mutex_unlock(&f->fifo_lock);
2779 
2780  pthread_join(f->thread, NULL);
2781  f->joined = 1;
2782 
2783  while (av_fifo_size(f->fifo)) {
2784  av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2785  av_free_packet(&pkt);
2786  }
2787  av_fifo_free(f->fifo);
2788  }
2789 }
2790 
2791 static int init_input_threads(void)
2792 {
2793  int i, ret;
2794 
2795  if (nb_input_files == 1)
2796  return 0;
2797 
2798  for (i = 0; i < nb_input_files; i++) {
2799  InputFile *f = input_files[i];
2800 
2801  if (!(f->fifo = av_fifo_alloc(8*sizeof(AVPacket))))
2802  return AVERROR(ENOMEM);
2803 
2804  pthread_mutex_init(&f->fifo_lock, NULL);
2805  pthread_cond_init (&f->fifo_cond, NULL);
2806 
2807  if ((ret = pthread_create(&f->thread, NULL, input_thread, f)))
2808  return AVERROR(ret);
2809  }
2810  return 0;
2811 }
2812 
2813 static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
2814 {
2815  int ret = 0;
2816 
2817  pthread_mutex_lock(&f->fifo_lock);
2818 
2819  if (av_fifo_size(f->fifo)) {
2820  av_fifo_generic_read(f->fifo, pkt, sizeof(*pkt), NULL);
2821  pthread_cond_signal(&f->fifo_cond);
2822  } else {
2823  if (f->finished)
2824  ret = AVERROR_EOF;
2825  else
2826  ret = AVERROR(EAGAIN);
2827  }
2828 
2829  pthread_mutex_unlock(&f->fifo_lock);
2830 
2831  return ret;
2832 }
2833 #endif
2834 
2836 {
2837  if (f->rate_emu) {
2838  int i;
2839  for (i = 0; i < f->nb_streams; i++) {
2840  InputStream *ist = input_streams[f->ist_index + i];
2841  int64_t pts = av_rescale(ist->dts, 1000000, AV_TIME_BASE);
2842  int64_t now = av_gettime() - ist->start;
2843  if (pts > now)
2844  return AVERROR(EAGAIN);
2845  }
2846  }
2847 
2848 #if HAVE_PTHREADS
2849  if (nb_input_files > 1)
2850  return get_input_packet_mt(f, pkt);
2851 #endif
2852  return av_read_frame(f->ctx, pkt);
2853 }
2854 
2855 static int got_eagain(void)
2856 {
2857  int i;
2858  for (i = 0; i < nb_output_streams; i++)
2859  if (output_streams[i]->unavailable)
2860  return 1;
2861  return 0;
2862 }
2863 
2864 static void reset_eagain(void)
2865 {
2866  int i;
2867  for (i = 0; i < nb_input_files; i++)
2868  input_files[i]->eagain = 0;
2869  for (i = 0; i < nb_output_streams; i++)
2870  output_streams[i]->unavailable = 0;
2871 }
2872 
2873 /*
2874  * Return
2875  * - 0 -- one packet was read and processed
2876  * - AVERROR(EAGAIN) -- no packets were available for selected file,
2877  * this function should be called again
2878  * - AVERROR_EOF -- this function should not be called again
2879  */
2880 static int process_input(int file_index)
2881 {
2882  InputFile *ifile = input_files[file_index];
2883  AVFormatContext *is;
2884  InputStream *ist;
2885  AVPacket pkt;
2886  int ret, i, j;
2887 
2888  is = ifile->ctx;
2889  ret = get_input_packet(ifile, &pkt);
2890 
2891  if (ret == AVERROR(EAGAIN)) {
2892  ifile->eagain = 1;
2893  return ret;
2894  }
2895  if (ret < 0) {
2896  if (ret != AVERROR_EOF) {
2897  print_error(is->filename, ret);
2898  if (exit_on_error)
2899  exit_program(1);
2900  }
2901  ifile->eof_reached = 1;
2902 
2903  for (i = 0; i < ifile->nb_streams; i++) {
2904  ist = input_streams[ifile->ist_index + i];
2905  if (ist->decoding_needed)
2906  output_packet(ist, NULL);
2907 
2908  /* mark all outputs that don't go through lavfi as finished */
2909  for (j = 0; j < nb_output_streams; j++) {
2910  OutputStream *ost = output_streams[j];
2911 
2912  if (ost->source_index == ifile->ist_index + i &&
2913  (ost->stream_copy || ost->enc->type == AVMEDIA_TYPE_SUBTITLE))
2914  close_output_stream(ost);
2915  }
2916  }
2917 
2918  return AVERROR(EAGAIN);
2919  }
2920 
2921  reset_eagain();
2922 
2923  if (do_pkt_dump) {
2925  is->streams[pkt.stream_index]);
2926  }
2927  /* the following test is needed in case new streams appear
2928  dynamically in stream : we ignore them */
2929  if (pkt.stream_index >= ifile->nb_streams) {
2930  report_new_stream(file_index, &pkt);
2931  goto discard_packet;
2932  }
2933 
2934  ist = input_streams[ifile->ist_index + pkt.stream_index];
2935  if (ist->discard)
2936  goto discard_packet;
2937 
2938  if (debug_ts) {
2939  av_log(NULL, AV_LOG_INFO, "demuxer -> ist_index:%d type:%s "
2940  "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",
2944  av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
2945  av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
2946  av_ts2str(input_files[ist->file_index]->ts_offset),
2947  av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
2948  }
2949 
2950  if(!ist->wrap_correction_done && is->start_time != AV_NOPTS_VALUE && ist->st->pts_wrap_bits < 64){
2951  int64_t stime, stime2;
2952  // Correcting starttime based on the enabled streams
2953  // 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.
2954  // so we instead do it here as part of discontinuity handling
2955  if ( ist->next_dts == AV_NOPTS_VALUE
2956  && ifile->ts_offset == -is->start_time
2957  && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2958  int64_t new_start_time = INT64_MAX;
2959  for (i=0; i<is->nb_streams; i++) {
2960  AVStream *st = is->streams[i];
2961  if(st->discard == AVDISCARD_ALL || st->start_time == AV_NOPTS_VALUE)
2962  continue;
2963  new_start_time = FFMIN(new_start_time, av_rescale_q(st->start_time, st->time_base, AV_TIME_BASE_Q));
2964  }
2965  if (new_start_time > is->start_time) {
2966  av_log(is, AV_LOG_VERBOSE, "Correcting start time by %"PRId64"\n", new_start_time - is->start_time);
2967  ifile->ts_offset = -new_start_time;
2968  }
2969  }
2970 
2971  stime = av_rescale_q(is->start_time, AV_TIME_BASE_Q, ist->st->time_base);
2972  stime2= stime + (1ULL<<ist->st->pts_wrap_bits);
2973  ist->wrap_correction_done = 1;
2974 
2975  if(stime2 > stime && pkt.dts != AV_NOPTS_VALUE && pkt.dts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
2976  pkt.dts -= 1ULL<<ist->st->pts_wrap_bits;
2977  ist->wrap_correction_done = 0;
2978  }
2979  if(stime2 > stime && pkt.pts != AV_NOPTS_VALUE && pkt.pts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
2980  pkt.pts -= 1ULL<<ist->st->pts_wrap_bits;
2981  ist->wrap_correction_done = 0;
2982  }
2983  }
2984 
2985  if (pkt.dts != AV_NOPTS_VALUE)
2986  pkt.dts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2987  if (pkt.pts != AV_NOPTS_VALUE)
2988  pkt.pts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2989 
2990  if (pkt.pts != AV_NOPTS_VALUE)
2991  pkt.pts *= ist->ts_scale;
2992  if (pkt.dts != AV_NOPTS_VALUE)
2993  pkt.dts *= ist->ts_scale;
2994 
2995  if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts == AV_NOPTS_VALUE && !copy_ts
2996  && (is->iformat->flags & AVFMT_TS_DISCONT) && ifile->last_ts != AV_NOPTS_VALUE) {
2997  int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2998  int64_t delta = pkt_dts - ifile->last_ts;
2999  if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
3000  (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
3002  ifile->ts_offset -= delta;
3003  av_log(NULL, AV_LOG_DEBUG,
3004  "Inter stream timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
3005  delta, ifile->ts_offset);
3006  pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3007  if (pkt.pts != AV_NOPTS_VALUE)
3008  pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3009  }
3010  }
3011 
3012  if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE &&
3013  !copy_ts) {
3014  int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3015  int64_t delta = pkt_dts - ist->next_dts;
3016  if (is->iformat->flags & AVFMT_TS_DISCONT) {
3017  if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
3018  (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
3020  pkt_dts+1<ist->pts){
3021  ifile->ts_offset -= delta;
3022  av_log(NULL, AV_LOG_DEBUG,
3023  "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
3024  delta, ifile->ts_offset);
3025  pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3026  if (pkt.pts != AV_NOPTS_VALUE)
3027  pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3028  }
3029  } else {
3030  if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
3032  ) {
3033  av_log(NULL, AV_LOG_WARNING, "DTS %"PRId64", next:%"PRId64" st:%d invalid dropping\n", pkt.dts, ist->next_dts, pkt.stream_index);
3034  pkt.dts = AV_NOPTS_VALUE;
3035  }
3036  if (pkt.pts != AV_NOPTS_VALUE){
3037  int64_t pkt_pts = av_rescale_q(pkt.pts, ist->st->time_base, AV_TIME_BASE_Q);
3038  delta = pkt_pts - ist->next_dts;
3039  if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
3041  ) {
3042  av_log(NULL, AV_LOG_WARNING, "PTS %"PRId64", next:%"PRId64" invalid dropping st:%d\n", pkt.pts, ist->next_dts, pkt.stream_index);
3043  pkt.pts = AV_NOPTS_VALUE;
3044  }
3045  }
3046  }
3047  }
3048 
3049  if (pkt.dts != AV_NOPTS_VALUE)
3050  ifile->last_ts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3051 
3052  if (debug_ts) {
3053  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",
3055  av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
3056  av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
3057  av_ts2str(input_files[ist->file_index]->ts_offset),
3058  av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
3059  }
3060 
3061  sub2video_heartbeat(ist, pkt.pts);
3062 
3063  ret = output_packet(ist, &pkt);
3064  if (ret < 0) {
3065  char buf[128];
3066  av_strerror(ret, buf, sizeof(buf));
3067  av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d: %s\n",
3068  ist->file_index, ist->st->index, buf);
3069  if (exit_on_error)
3070  exit_program(1);
3071  }
3072 
3073 discard_packet:
3074  av_free_packet(&pkt);
3075 
3076  return 0;
3077 }
3078 
3079 /**
3080  * Perform a step of transcoding for the specified filter graph.
3081  *
3082  * @param[in] graph filter graph to consider
3083  * @param[out] best_ist input stream where a frame would allow to continue
3084  * @return 0 for success, <0 for error
3085  */
3086 static int transcode_from_filter(FilterGraph *graph, InputStream **best_ist)
3087 {
3088  int i, ret;
3089  int nb_requests, nb_requests_max = 0;
3090  InputFilter *ifilter;
3091  InputStream *ist;
3092 
3093  *best_ist = NULL;
3094  ret = avfilter_graph_request_oldest(graph->graph);
3095  if (ret >= 0)
3096  return reap_filters();
3097 
3098  if (ret == AVERROR_EOF) {
3099  ret = reap_filters();
3100  for (i = 0; i < graph->nb_outputs; i++)
3101  close_output_stream(graph->outputs[i]->ost);
3102  return ret;
3103  }
3104  if (ret != AVERROR(EAGAIN))
3105  return ret;
3106 
3107  for (i = 0; i < graph->nb_inputs; i++) {
3108  ifilter = graph->inputs[i];
3109  ist = ifilter->ist;
3110  if (input_files[ist->file_index]->eagain ||
3111  input_files[ist->file_index]->eof_reached)
3112  continue;
3113  nb_requests = av_buffersrc_get_nb_failed_requests(ifilter->filter);
3114  if (nb_requests > nb_requests_max) {
3115  nb_requests_max = nb_requests;
3116  *best_ist = ist;
3117  }
3118  }
3119 
3120  if (!*best_ist)
3121  for (i = 0; i < graph->nb_outputs; i++)
3122  graph->outputs[i]->ost->unavailable = 1;
3123 
3124  return 0;
3125 }
3126 
3127 /**
3128  * Run a single step of transcoding.
3129  *
3130  * @return 0 for success, <0 for error
3131  */
3132 static int transcode_step(void)
3133 {
3134  OutputStream *ost;
3135  InputStream *ist;
3136  int ret;
3137 
3138  ost = choose_output();
3139  if (!ost) {
3140  if (got_eagain()) {
3141  reset_eagain();
3142  av_usleep(10000);
3143  return 0;
3144  }
3145  av_log(NULL, AV_LOG_VERBOSE, "No more inputs to read from, finishing.\n");
3146  return AVERROR_EOF;
3147  }
3148 
3149  if (ost->filter) {
3150  if ((ret = transcode_from_filter(ost->filter->graph, &ist)) < 0)
3151  return ret;
3152  if (!ist)
3153  return 0;
3154  } else {
3155  av_assert0(ost->source_index >= 0);
3156  ist = input_streams[ost->source_index];
3157  }
3158 
3159  ret = process_input(ist->file_index);
3160  if (ret == AVERROR(EAGAIN)) {
3161  if (input_files[ist->file_index]->eagain)
3162  ost->unavailable = 1;
3163  return 0;
3164  }
3165  if (ret < 0)
3166  return ret == AVERROR_EOF ? 0 : ret;
3167 
3168  return reap_filters();
3169 }
3170 
3171 /*
3172  * The following code is the main loop of the file converter
3173  */
3174 static int transcode(void)
3175 {
3176  int ret, i;
3177  AVFormatContext *os;
3178  OutputStream *ost;
3179  InputStream *ist;
3180  int64_t timer_start;
3181 
3182  ret = transcode_init();
3183  if (ret < 0)
3184  goto fail;
3185 
3186  if (stdin_interaction) {
3187  av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
3188  }
3189 
3190  timer_start = av_gettime();
3191 
3192 #if HAVE_PTHREADS
3193  if ((ret = init_input_threads()) < 0)
3194  goto fail;
3195 #endif
3196 
3197  while (!received_sigterm) {
3198  int64_t cur_time= av_gettime();
3199 
3200  /* if 'q' pressed, exits */
3201  if (stdin_interaction)
3202  if (check_keyboard_interaction(cur_time) < 0)
3203  break;
3204 
3205  /* check if there's any stream where output is still needed */
3206  if (!need_output()) {
3207  av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n");
3208  break;
3209  }
3210 
3211  ret = transcode_step();
3212  if (ret < 0) {
3213  if (ret == AVERROR_EOF || ret == AVERROR(EAGAIN))
3214  continue;
3215 
3216  av_log(NULL, AV_LOG_ERROR, "Error while filtering.\n");
3217  break;
3218  }
3219 
3220  /* dump report by using the output first video and audio streams */
3221  print_report(0, timer_start, cur_time);
3222  }
3223 #if HAVE_PTHREADS
3225 #endif
3226 
3227  /* at the end of stream, we must flush the decoder buffers */
3228  for (i = 0; i < nb_input_streams; i++) {
3229  ist = input_streams[i];
3230  if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
3231  output_packet(ist, NULL);
3232  }
3233  }
3234  flush_encoders();
3235 
3236  term_exit();
3237 
3238  /* write the trailer if needed and close file */
3239  for (i = 0; i < nb_output_files; i++) {
3240  os = output_files[i]->ctx;
3241  av_write_trailer(os);
3242  }
3243 
3244  /* dump report by using the first video and audio streams */
3245  print_report(1, timer_start, av_gettime());
3246 
3247  /* close each encoder */
3248  for (i = 0; i < nb_output_streams; i++) {
3249  ost = output_streams[i];
3250  if (ost->encoding_needed) {
3251  av_freep(&ost->st->codec->stats_in);
3252  avcodec_close(ost->st->codec);
3253  }
3254  }
3255 
3256  /* close each decoder */
3257  for (i = 0; i < nb_input_streams; i++) {
3258  ist = input_streams[i];
3259  if (ist->decoding_needed) {
3260  avcodec_close(ist->st->codec);
3261  }
3262  }
3263 
3264  /* finished ! */
3265  ret = 0;
3266 
3267  fail:
3268 #if HAVE_PTHREADS
3270 #endif
3271 
3272  if (output_streams) {
3273  for (i = 0; i < nb_output_streams; i++) {
3274  ost = output_streams[i];
3275  if (ost) {
3276  if (ost->stream_copy)
3277  av_freep(&ost->st->codec->extradata);
3278  if (ost->logfile) {
3279  fclose(ost->logfile);
3280  ost->logfile = NULL;
3281  }
3282  av_freep(&ost->st->codec->subtitle_header);
3283  av_freep(&ost->forced_kf_pts);
3284  av_freep(&ost->apad);
3285  av_dict_free(&ost->opts);
3286  av_dict_free(&ost->swr_opts);
3287  av_dict_free(&ost->resample_opts);
3288  }
3289  }
3290  }
3291  return ret;
3292 }
3293 
3294 
3295 static int64_t getutime(void)
3296 {
3297 #if HAVE_GETRUSAGE
3298  struct rusage rusage;
3299 
3300  getrusage(RUSAGE_SELF, &rusage);
3301  return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
3302 #elif HAVE_GETPROCESSTIMES
3303  HANDLE proc;
3304  FILETIME c, e, k, u;
3305  proc = GetCurrentProcess();
3306  GetProcessTimes(proc, &c, &e, &k, &u);
3307  return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
3308 #else
3309  return av_gettime();
3310 #endif
3311 }
3312 
3313 static int64_t getmaxrss(void)
3314 {
3315 #if HAVE_GETRUSAGE && HAVE_STRUCT_RUSAGE_RU_MAXRSS
3316  struct rusage rusage;
3317  getrusage(RUSAGE_SELF, &rusage);
3318  return (int64_t)rusage.ru_maxrss * 1024;
3319 #elif HAVE_GETPROCESSMEMORYINFO
3320  HANDLE proc;
3321  PROCESS_MEMORY_COUNTERS memcounters;
3322  proc = GetCurrentProcess();
3323  memcounters.cb = sizeof(memcounters);
3324  GetProcessMemoryInfo(proc, &memcounters, sizeof(memcounters));
3325  return memcounters.PeakPagefileUsage;
3326 #else
3327  return 0;
3328 #endif
3329 }
3330 
3331 static void log_callback_null(void *ptr, int level, const char *fmt, va_list vl)
3332 {
3333 }
3334 
3335 int main(int argc, char **argv)
3336 {
3337  int ret;
3338  int64_t ti;
3339 
3341 
3342  setvbuf(stderr,NULL,_IONBF,0); /* win32 runtime needs this */
3343 
3345  parse_loglevel(argc, argv, options);
3346 
3347  if(argc>1 && !strcmp(argv[1], "-d")){
3348  run_as_daemon=1;
3350  argc--;
3351  argv++;
3352  }
3353 
3355 #if CONFIG_AVDEVICE
3357 #endif
3359  av_register_all();
3361 
3362  show_banner(argc, argv, options);
3363 
3364  term_init();
3365 
3366  /* parse options and open all input/output files */
3367  ret = ffmpeg_parse_options(argc, argv);
3368  if (ret < 0)
3369  exit_program(1);
3370 
3371  if (nb_output_files <= 0 && nb_input_files == 0) {
3372  show_usage();
3373  av_log(NULL, AV_LOG_WARNING, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
3374  exit_program(1);
3375  }
3376 
3377  /* file converter / grab */
3378  if (nb_output_files <= 0) {
3379  av_log(NULL, AV_LOG_FATAL, "At least one output file must be specified\n");
3380  exit_program(1);
3381  }
3382 
3383 // if (nb_input_files == 0) {
3384 // av_log(NULL, AV_LOG_FATAL, "At least one input file must be specified\n");
3385 // exit_program(1);
3386 // }
3387 
3388  current_time = ti = getutime();
3389  if (transcode() < 0)
3390  exit_program(1);
3391  ti = getutime() - ti;
3392  if (do_benchmark) {
3393  printf("bench: utime=%0.3fs\n", ti / 1000000.0);
3394  }
3395  av_log(NULL, AV_LOG_DEBUG, "%"PRIu64" frames successfully decoded, %"PRIu64" decoding errors\n",
3397  if (2*decode_error_stat[0] < decode_error_stat[1])
3398  exit_program(254);
3399 
3400  exit_program(received_nb_signals ? 255 : 0);
3401  return 0;
3402 }