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 #include <stdint.h>
34 
35 #if HAVE_ISATTY
36 #if HAVE_IO_H
37 #include <io.h>
38 #endif
39 #if HAVE_UNISTD_H
40 #include <unistd.h>
41 #endif
42 #endif
43 
44 #include "libavformat/avformat.h"
45 #include "libavdevice/avdevice.h"
47 #include "libavutil/opt.h"
49 #include "libavutil/parseutils.h"
50 #include "libavutil/samplefmt.h"
51 #include "libavutil/fifo.h"
52 #include "libavutil/intreadwrite.h"
53 #include "libavutil/dict.h"
54 #include "libavutil/mathematics.h"
55 #include "libavutil/pixdesc.h"
56 #include "libavutil/avstring.h"
57 #include "libavutil/libm.h"
58 #include "libavutil/imgutils.h"
59 #include "libavutil/timestamp.h"
60 #include "libavutil/bprint.h"
61 #include "libavutil/time.h"
63 #include "libavformat/os_support.h"
64 
65 #include "libavformat/ffm.h" // not public API
66 
67 # include "libavfilter/avcodec.h"
68 # include "libavfilter/avfilter.h"
69 # include "libavfilter/buffersrc.h"
70 # include "libavfilter/buffersink.h"
71 
72 #if HAVE_SYS_RESOURCE_H
73 #include <sys/time.h>
74 #include <sys/types.h>
75 #include <sys/resource.h>
76 #elif HAVE_GETPROCESSTIMES
77 #include <windows.h>
78 #endif
79 #if HAVE_GETPROCESSMEMORYINFO
80 #include <windows.h>
81 #include <psapi.h>
82 #endif
83 
84 #if HAVE_SYS_SELECT_H
85 #include <sys/select.h>
86 #endif
87 
88 #if HAVE_TERMIOS_H
89 #include <fcntl.h>
90 #include <sys/ioctl.h>
91 #include <sys/time.h>
92 #include <termios.h>
93 #elif HAVE_KBHIT
94 #include <conio.h>
95 #endif
96 
97 #if HAVE_PTHREADS
98 #include <pthread.h>
99 #endif
100 
101 #include <time.h>
102 
103 #include "ffmpeg.h"
104 #include "cmdutils.h"
105 
106 #include "libavutil/avassert.h"
107 
108 const char program_name[] = "ffmpeg";
109 const int program_birth_year = 2000;
110 
111 static FILE *vstats_file;
112 
113 const char *const forced_keyframes_const_names[] = {
114  "n",
115  "n_forced",
116  "prev_forced_n",
117  "prev_forced_t",
118  "t",
119  NULL
120 };
121 
122 static void do_video_stats(OutputStream *ost, int frame_size);
123 static int64_t getutime(void);
124 static int64_t getmaxrss(void);
125 
126 static int run_as_daemon = 0;
127 static int nb_frames_dup = 0;
128 static int nb_frames_drop = 0;
129 static int64_t decode_error_stat[2];
130 
131 static int current_time;
133 
135 
136 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
137 
142 
147 
150 
151 #if HAVE_TERMIOS_H
152 
153 /* init terminal so that we can grab keys */
154 static struct termios oldtty;
155 static int restore_tty;
156 #endif
157 
158 static void free_input_threads(void);
159 
160 
161 /* sub2video hack:
162  Convert subtitles to video with alpha to insert them in filter graphs.
163  This is a temporary solution until libavfilter gets real subtitles support.
164  */
165 
167 {
168  int ret;
169  AVFrame *frame = ist->sub2video.frame;
170 
171  av_frame_unref(frame);
172  ist->sub2video.frame->width = ist->sub2video.w;
173  ist->sub2video.frame->height = ist->sub2video.h;
175  if ((ret = av_frame_get_buffer(frame, 32)) < 0)
176  return ret;
177  memset(frame->data[0], 0, frame->height * frame->linesize[0]);
178  return 0;
179 }
180 
181 static void sub2video_copy_rect(uint8_t *dst, int dst_linesize, int w, int h,
182  AVSubtitleRect *r)
183 {
184  uint32_t *pal, *dst2;
185  uint8_t *src, *src2;
186  int x, y;
187 
188  if (r->type != SUBTITLE_BITMAP) {
189  av_log(NULL, AV_LOG_WARNING, "sub2video: non-bitmap subtitle\n");
190  return;
191  }
192  if (r->x < 0 || r->x + r->w > w || r->y < 0 || r->y + r->h > h) {
193  av_log(NULL, AV_LOG_WARNING, "sub2video: rectangle overflowing\n");
194  return;
195  }
196 
197  dst += r->y * dst_linesize + r->x * 4;
198  src = r->pict.data[0];
199  pal = (uint32_t *)r->pict.data[1];
200  for (y = 0; y < r->h; y++) {
201  dst2 = (uint32_t *)dst;
202  src2 = src;
203  for (x = 0; x < r->w; x++)
204  *(dst2++) = pal[*(src2++)];
205  dst += dst_linesize;
206  src += r->pict.linesize[0];
207  }
208 }
209 
210 static void sub2video_push_ref(InputStream *ist, int64_t pts)
211 {
212  AVFrame *frame = ist->sub2video.frame;
213  int i;
214 
215  av_assert1(frame->data[0]);
216  ist->sub2video.last_pts = frame->pts = pts;
217  for (i = 0; i < ist->nb_filters; i++)
221 }
222 
223 static void sub2video_update(InputStream *ist, AVSubtitle *sub)
224 {
225  int w = ist->sub2video.w, h = ist->sub2video.h;
226  AVFrame *frame = ist->sub2video.frame;
227  int8_t *dst;
228  int dst_linesize;
229  int num_rects, i;
230  int64_t pts, end_pts;
231 
232  if (!frame)
233  return;
234  if (sub) {
235  pts = av_rescale_q(sub->pts + sub->start_display_time * 1000LL,
236  AV_TIME_BASE_Q, ist->st->time_base);
237  end_pts = av_rescale_q(sub->pts + sub->end_display_time * 1000LL,
238  AV_TIME_BASE_Q, ist->st->time_base);
239  num_rects = sub->num_rects;
240  } else {
241  pts = ist->sub2video.end_pts;
242  end_pts = INT64_MAX;
243  num_rects = 0;
244  }
245  if (sub2video_get_blank_frame(ist) < 0) {
247  "Impossible to get a blank canvas.\n");
248  return;
249  }
250  dst = frame->data [0];
251  dst_linesize = frame->linesize[0];
252  for (i = 0; i < num_rects; i++)
253  sub2video_copy_rect(dst, dst_linesize, w, h, sub->rects[i]);
254  sub2video_push_ref(ist, pts);
255  ist->sub2video.end_pts = end_pts;
256 }
257 
258 static void sub2video_heartbeat(InputStream *ist, int64_t pts)
259 {
260  InputFile *infile = input_files[ist->file_index];
261  int i, j, nb_reqs;
262  int64_t pts2;
263 
264  /* When a frame is read from a file, examine all sub2video streams in
265  the same file and send the sub2video frame again. Otherwise, decoded
266  video frames could be accumulating in the filter graph while a filter
267  (possibly overlay) is desperately waiting for a subtitle frame. */
268  for (i = 0; i < infile->nb_streams; i++) {
269  InputStream *ist2 = input_streams[infile->ist_index + i];
270  if (!ist2->sub2video.frame)
271  continue;
272  /* subtitles seem to be usually muxed ahead of other streams;
273  if not, subtracting a larger time here is necessary */
274  pts2 = av_rescale_q(pts, ist->st->time_base, ist2->st->time_base) - 1;
275  /* do not send the heartbeat frame if the subtitle is already ahead */
276  if (pts2 <= ist2->sub2video.last_pts)
277  continue;
278  if (pts2 >= ist2->sub2video.end_pts || !ist2->sub2video.frame->data[0])
279  sub2video_update(ist2, NULL);
280  for (j = 0, nb_reqs = 0; j < ist2->nb_filters; j++)
281  nb_reqs += av_buffersrc_get_nb_failed_requests(ist2->filters[j]->filter);
282  if (nb_reqs)
283  sub2video_push_ref(ist2, pts2);
284  }
285 }
286 
287 static void sub2video_flush(InputStream *ist)
288 {
289  int i;
290 
291  if (ist->sub2video.end_pts < INT64_MAX)
292  sub2video_update(ist, NULL);
293  for (i = 0; i < ist->nb_filters; i++)
294  av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
295 }
296 
297 /* end of sub2video hack */
298 
299 static void term_exit_sigsafe(void)
300 {
301 #if HAVE_TERMIOS_H
302  if(restore_tty)
303  tcsetattr (0, TCSANOW, &oldtty);
304 #endif
305 }
306 
307 void term_exit(void)
308 {
309  av_log(NULL, AV_LOG_QUIET, "%s", "");
311 }
312 
313 static volatile int received_sigterm = 0;
314 static volatile int received_nb_signals = 0;
315 static volatile int transcode_init_done = 0;
316 static int main_return_code = 0;
317 
318 static void
320 {
321  received_sigterm = sig;
324  if(received_nb_signals > 3)
325  exit(123);
326 }
327 
328 void term_init(void)
329 {
330 #if HAVE_TERMIOS_H
331  if(!run_as_daemon){
332  struct termios tty;
333  int istty = 1;
334 #if HAVE_ISATTY
335  istty = isatty(0) && isatty(2);
336 #endif
337  if (istty && tcgetattr (0, &tty) == 0) {
338  oldtty = tty;
339  restore_tty = 1;
340 
341  tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
342  |INLCR|IGNCR|ICRNL|IXON);
343  tty.c_oflag |= OPOST;
344  tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
345  tty.c_cflag &= ~(CSIZE|PARENB);
346  tty.c_cflag |= CS8;
347  tty.c_cc[VMIN] = 1;
348  tty.c_cc[VTIME] = 0;
349 
350  tcsetattr (0, TCSANOW, &tty);
351  }
352  signal(SIGQUIT, sigterm_handler); /* Quit (POSIX). */
353  }
354 #endif
356 
357  signal(SIGINT , sigterm_handler); /* Interrupt (ANSI). */
358  signal(SIGTERM, sigterm_handler); /* Termination (ANSI). */
359 #ifdef SIGXCPU
360  signal(SIGXCPU, sigterm_handler);
361 #endif
362 }
363 
364 /* read a key without blocking */
365 static int read_key(void)
366 {
367  unsigned char ch;
368 #if HAVE_TERMIOS_H
369  int n = 1;
370  struct timeval tv;
371  fd_set rfds;
372 
373  FD_ZERO(&rfds);
374  FD_SET(0, &rfds);
375  tv.tv_sec = 0;
376  tv.tv_usec = 0;
377  n = select(1, &rfds, NULL, NULL, &tv);
378  if (n > 0) {
379  n = read(0, &ch, 1);
380  if (n == 1)
381  return ch;
382 
383  return n;
384  }
385 #elif HAVE_KBHIT
386 # if HAVE_PEEKNAMEDPIPE
387  static int is_pipe;
388  static HANDLE input_handle;
389  DWORD dw, nchars;
390  if(!input_handle){
391  input_handle = GetStdHandle(STD_INPUT_HANDLE);
392  is_pipe = !GetConsoleMode(input_handle, &dw);
393  }
394 
395  if (stdin->_cnt > 0) {
396  read(0, &ch, 1);
397  return ch;
398  }
399  if (is_pipe) {
400  /* When running under a GUI, you will end here. */
401  if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL)) {
402  // input pipe may have been closed by the program that ran ffmpeg
403  return -1;
404  }
405  //Read it
406  if(nchars != 0) {
407  read(0, &ch, 1);
408  return ch;
409  }else{
410  return -1;
411  }
412  }
413 # endif
414  if(kbhit())
415  return(getch());
416 #endif
417  return -1;
418 }
419 
420 static int decode_interrupt_cb(void *ctx)
421 {
423 }
424 
426 
427 static void ffmpeg_cleanup(int ret)
428 {
429  int i, j;
430 
431  if (do_benchmark) {
432  int maxrss = getmaxrss() / 1024;
433  printf("bench: maxrss=%ikB\n", maxrss);
434  }
435 
436  for (i = 0; i < nb_filtergraphs; i++) {
437  FilterGraph *fg = filtergraphs[i];
439  for (j = 0; j < fg->nb_inputs; j++) {
440  av_freep(&fg->inputs[j]->name);
441  av_freep(&fg->inputs[j]);
442  }
443  av_freep(&fg->inputs);
444  for (j = 0; j < fg->nb_outputs; j++) {
445  av_freep(&fg->outputs[j]->name);
446  av_freep(&fg->outputs[j]);
447  }
448  av_freep(&fg->outputs);
449  av_freep(&fg->graph_desc);
450 
451  av_freep(&filtergraphs[i]);
452  }
453  av_freep(&filtergraphs);
454 
456 
457  /* close files */
458  for (i = 0; i < nb_output_files; i++) {
459  OutputFile *of = output_files[i];
460  AVFormatContext *s = of->ctx;
461  if (s && s->oformat && !(s->oformat->flags & AVFMT_NOFILE) && s->pb)
462  avio_close(s->pb);
464  av_dict_free(&of->opts);
465 
466  av_freep(&output_files[i]);
467  }
468  for (i = 0; i < nb_output_streams; i++) {
469  OutputStream *ost = output_streams[i];
471  while (bsfc) {
472  AVBitStreamFilterContext *next = bsfc->next;
474  bsfc = next;
475  }
476  ost->bitstream_filters = NULL;
478  av_frame_free(&ost->last_frame);
479 
480  av_parser_close(ost->parser);
481 
482  av_freep(&ost->forced_keyframes);
484  av_freep(&ost->avfilter);
485  av_freep(&ost->logfile_prefix);
486 
488  ost->audio_channels_mapped = 0;
489 
491 
492  av_freep(&output_streams[i]);
493  }
494 #if HAVE_PTHREADS
496 #endif
497  for (i = 0; i < nb_input_files; i++) {
498  avformat_close_input(&input_files[i]->ctx);
499  av_freep(&input_files[i]);
500  }
501  for (i = 0; i < nb_input_streams; i++) {
502  InputStream *ist = input_streams[i];
503 
506  av_dict_free(&ist->decoder_opts);
509  av_freep(&ist->filters);
510  av_freep(&ist->hwaccel_device);
511 
513 
514  av_freep(&input_streams[i]);
515  }
516 
517  if (vstats_file)
518  fclose(vstats_file);
520 
521  av_freep(&input_streams);
522  av_freep(&input_files);
523  av_freep(&output_streams);
524  av_freep(&output_files);
525 
526  uninit_opts();
527 
529 
530  if (received_sigterm) {
531  av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
532  (int) received_sigterm);
533  } else if (ret && transcode_init_done) {
534  av_log(NULL, AV_LOG_INFO, "Conversion failed!\n");
535  }
536  term_exit();
537 }
538 
540 {
541  AVDictionaryEntry *t = NULL;
542 
543  while ((t = av_dict_get(b, "", t, AV_DICT_IGNORE_SUFFIX))) {
544  av_dict_set(a, t->key, NULL, AV_DICT_MATCH_CASE);
545  }
546 }
547 
549 {
551  if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
552  av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
553  exit_program(1);
554  }
555 }
556 
557 static void abort_codec_experimental(AVCodec *c, int encoder)
558 {
559  exit_program(1);
560 }
561 
562 static void update_benchmark(const char *fmt, ...)
563 {
564  if (do_benchmark_all) {
565  int64_t t = getutime();
566  va_list va;
567  char buf[1024];
568 
569  if (fmt) {
570  va_start(va, fmt);
571  vsnprintf(buf, sizeof(buf), fmt, va);
572  va_end(va);
573  printf("bench: %8"PRIu64" %s \n", t - current_time, buf);
574  }
575  current_time = t;
576  }
577 }
578 
579 static void close_all_output_streams(OutputStream *ost, OSTFinished this_stream, OSTFinished others)
580 {
581  int i;
582  for (i = 0; i < nb_output_streams; i++) {
583  OutputStream *ost2 = output_streams[i];
584  ost2->finished |= ost == ost2 ? this_stream : others;
585  }
586 }
587 
589 {
591  AVCodecContext *avctx = ost->st->codec;
592  int ret;
593 
594  if (!ost->st->codec->extradata_size && ost->enc_ctx->extradata_size) {
596  if (ost->st->codec->extradata) {
597  memcpy(ost->st->codec->extradata, ost->enc_ctx->extradata, ost->enc_ctx->extradata_size);
599  }
600  }
601 
604  pkt->pts = pkt->dts = AV_NOPTS_VALUE;
605 
606  /*
607  * Audio encoders may split the packets -- #frames in != #packets out.
608  * But there is no reordering, so we can limit the number of output packets
609  * by simply dropping them here.
610  * Counting encoded video frames needs to be done separately because of
611  * reordering, see do_video_out()
612  */
613  if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
614  if (ost->frame_number >= ost->max_frames) {
615  av_free_packet(pkt);
616  return;
617  }
618  ost->frame_number++;
619  }
620 
621  if (bsfc)
623 
624  while (bsfc) {
625  AVPacket new_pkt = *pkt;
626  AVDictionaryEntry *bsf_arg = av_dict_get(ost->bsf_args,
627  bsfc->filter->name,
628  NULL, 0);
629  int a = av_bitstream_filter_filter(bsfc, avctx,
630  bsf_arg ? bsf_arg->value : NULL,
631  &new_pkt.data, &new_pkt.size,
632  pkt->data, pkt->size,
633  pkt->flags & AV_PKT_FLAG_KEY);
634  if(a == 0 && new_pkt.data != pkt->data && new_pkt.destruct) {
635  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
636  if(t) {
637  memcpy(t, new_pkt.data, new_pkt.size);
638  memset(t + new_pkt.size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
639  new_pkt.data = t;
640  new_pkt.buf = NULL;
641  a = 1;
642  } else
643  a = AVERROR(ENOMEM);
644  }
645  if (a > 0) {
646  pkt->side_data = NULL;
647  pkt->side_data_elems = 0;
648  av_free_packet(pkt);
649  new_pkt.buf = av_buffer_create(new_pkt.data, new_pkt.size,
650  av_buffer_default_free, NULL, 0);
651  if (!new_pkt.buf)
652  exit_program(1);
653  } else if (a < 0) {
654  av_log(NULL, AV_LOG_ERROR, "Failed to open bitstream filter %s for stream %d with codec %s",
655  bsfc->filter->name, pkt->stream_index,
656  avctx->codec ? avctx->codec->name : "copy");
657  print_error("", a);
658  if (exit_on_error)
659  exit_program(1);
660  }
661  *pkt = new_pkt;
662 
663  bsfc = bsfc->next;
664  }
665 
666  if (!(s->oformat->flags & AVFMT_NOTIMESTAMPS)) {
667  if (pkt->dts != AV_NOPTS_VALUE &&
668  pkt->pts != AV_NOPTS_VALUE &&
669  pkt->dts > pkt->pts) {
670  av_log(s, AV_LOG_WARNING, "Invalid DTS: %"PRId64" PTS: %"PRId64" in output stream %d:%d, replacing by guess\n",
671  pkt->dts, pkt->pts,
672  ost->file_index, ost->st->index);
673  pkt->pts =
674  pkt->dts = pkt->pts + pkt->dts + ost->last_mux_dts + 1
675  - FFMIN3(pkt->pts, pkt->dts, ost->last_mux_dts + 1)
676  - FFMAX3(pkt->pts, pkt->dts, ost->last_mux_dts + 1);
677  }
678  if(
679  (avctx->codec_type == AVMEDIA_TYPE_AUDIO || avctx->codec_type == AVMEDIA_TYPE_VIDEO) &&
680  pkt->dts != AV_NOPTS_VALUE &&
681  ost->last_mux_dts != AV_NOPTS_VALUE) {
682  int64_t max = ost->last_mux_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT);
683  if (pkt->dts < max) {
684  int loglevel = max - pkt->dts > 2 || avctx->codec_type == AVMEDIA_TYPE_VIDEO ? AV_LOG_WARNING : AV_LOG_DEBUG;
685  av_log(s, loglevel, "Non-monotonous DTS in output stream "
686  "%d:%d; previous: %"PRId64", current: %"PRId64"; ",
687  ost->file_index, ost->st->index, ost->last_mux_dts, pkt->dts);
688  if (exit_on_error) {
689  av_log(NULL, AV_LOG_FATAL, "aborting.\n");
690  exit_program(1);
691  }
692  av_log(s, loglevel, "changing to %"PRId64". This may result "
693  "in incorrect timestamps in the output file.\n",
694  max);
695  if(pkt->pts >= pkt->dts)
696  pkt->pts = FFMAX(pkt->pts, max);
697  pkt->dts = max;
698  }
699  }
700  }
701  ost->last_mux_dts = pkt->dts;
702 
703  ost->data_size += pkt->size;
704  ost->packets_written++;
705 
706  pkt->stream_index = ost->index;
707 
708  if (debug_ts) {
709  av_log(NULL, AV_LOG_INFO, "muxer <- type:%s "
710  "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s size:%d\n",
712  av_ts2str(pkt->pts), av_ts2timestr(pkt->pts, &ost->st->time_base),
713  av_ts2str(pkt->dts), av_ts2timestr(pkt->dts, &ost->st->time_base),
714  pkt->size
715  );
716  }
717 
718  ret = av_interleaved_write_frame(s, pkt);
719  if (ret < 0) {
720  print_error("av_interleaved_write_frame()", ret);
721  main_return_code = 1;
723  }
724  av_free_packet(pkt);
725 }
726 
728 {
729  OutputFile *of = output_files[ost->file_index];
730 
731  ost->finished |= ENCODER_FINISHED;
732  if (of->shortest) {
733  int64_t end = av_rescale_q(ost->sync_opts - ost->first_pts, ost->enc_ctx->time_base, AV_TIME_BASE_Q);
734  of->recording_time = FFMIN(of->recording_time, end);
735  }
736 }
737 
739 {
740  OutputFile *of = output_files[ost->file_index];
741 
742  if (of->recording_time != INT64_MAX &&
744  AV_TIME_BASE_Q) >= 0) {
745  close_output_stream(ost);
746  return 0;
747  }
748  return 1;
749 }
750 
752  AVFrame *frame)
753 {
754  AVCodecContext *enc = ost->enc_ctx;
755  AVPacket pkt;
756  int got_packet = 0;
757 
758  av_init_packet(&pkt);
759  pkt.data = NULL;
760  pkt.size = 0;
761 
762  if (!check_recording_time(ost))
763  return;
764 
765  if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
766  frame->pts = ost->sync_opts;
767  ost->sync_opts = frame->pts + frame->nb_samples;
768  ost->samples_encoded += frame->nb_samples;
769  ost->frames_encoded++;
770 
771  av_assert0(pkt.size || !pkt.data);
772  update_benchmark(NULL);
773  if (debug_ts) {
774  av_log(NULL, AV_LOG_INFO, "encoder <- type:audio "
775  "frame_pts:%s frame_pts_time:%s time_base:%d/%d\n",
776  av_ts2str(frame->pts), av_ts2timestr(frame->pts, &enc->time_base),
777  enc->time_base.num, enc->time_base.den);
778  }
779 
780  if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
781  av_log(NULL, AV_LOG_FATAL, "Audio encoding failed (avcodec_encode_audio2)\n");
782  exit_program(1);
783  }
784  update_benchmark("encode_audio %d.%d", ost->file_index, ost->index);
785 
786  if (got_packet) {
787  av_packet_rescale_ts(&pkt, enc->time_base, ost->st->time_base);
788 
789  if (debug_ts) {
790  av_log(NULL, AV_LOG_INFO, "encoder -> type:audio "
791  "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
792  av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
793  av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
794  }
795 
796  write_frame(s, &pkt, ost);
797  }
798 }
799 
801  OutputStream *ost,
802  InputStream *ist,
803  AVSubtitle *sub)
804 {
805  int subtitle_out_max_size = 1024 * 1024;
806  int subtitle_out_size, nb, i;
807  AVCodecContext *enc;
808  AVPacket pkt;
809  int64_t pts;
810 
811  if (sub->pts == AV_NOPTS_VALUE) {
812  av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
813  if (exit_on_error)
814  exit_program(1);
815  return;
816  }
817 
818  enc = ost->enc_ctx;
819 
820  if (!subtitle_out) {
821  subtitle_out = av_malloc(subtitle_out_max_size);
822  }
823 
824  /* Note: DVB subtitle need one packet to draw them and one other
825  packet to clear them */
826  /* XXX: signal it in the codec context ? */
828  nb = 2;
829  else
830  nb = 1;
831 
832  /* shift timestamp to honor -ss and make check_recording_time() work with -t */
833  pts = sub->pts;
834  if (output_files[ost->file_index]->start_time != AV_NOPTS_VALUE)
835  pts -= output_files[ost->file_index]->start_time;
836  for (i = 0; i < nb; i++) {
837  unsigned save_num_rects = sub->num_rects;
838 
839  ost->sync_opts = av_rescale_q(pts, AV_TIME_BASE_Q, enc->time_base);
840  if (!check_recording_time(ost))
841  return;
842 
843  sub->pts = pts;
844  // start_display_time is required to be 0
845  sub->pts += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
847  sub->start_display_time = 0;
848  if (i == 1)
849  sub->num_rects = 0;
850 
851  ost->frames_encoded++;
852 
853  subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
854  subtitle_out_max_size, sub);
855  if (i == 1)
856  sub->num_rects = save_num_rects;
857  if (subtitle_out_size < 0) {
858  av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
859  exit_program(1);
860  }
861 
862  av_init_packet(&pkt);
863  pkt.data = subtitle_out;
864  pkt.size = subtitle_out_size;
865  pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
866  pkt.duration = av_rescale_q(sub->end_display_time, (AVRational){ 1, 1000 }, ost->st->time_base);
867  if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
868  /* XXX: the pts correction is handled here. Maybe handling
869  it in the codec would be better */
870  if (i == 0)
871  pkt.pts += 90 * sub->start_display_time;
872  else
873  pkt.pts += 90 * sub->end_display_time;
874  }
875  pkt.dts = pkt.pts;
876  write_frame(s, &pkt, ost);
877  }
878 }
879 
881  OutputStream *ost,
882  AVFrame *next_picture)
883 {
884  int ret, format_video_sync;
885  AVPacket pkt;
886  AVCodecContext *enc = ost->enc_ctx;
887  AVCodecContext *mux_enc = ost->st->codec;
888  int nb_frames, nb0_frames, i;
889  double sync_ipts, delta, delta0;
890  double duration = 0;
891  int frame_size = 0;
892  InputStream *ist = NULL;
893 
894  if (ost->source_index >= 0)
895  ist = input_streams[ost->source_index];
896 
897  if(ist && ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE && ost->frame_rate.num)
898  duration = 1/(av_q2d(ost->frame_rate) * av_q2d(enc->time_base));
899 
900  if (!ost->filters_script &&
901  !ost->filters &&
902  next_picture &&
903  ist &&
904  lrintf(av_frame_get_pkt_duration(next_picture) * av_q2d(ist->st->time_base) / av_q2d(enc->time_base)) > 0) {
905  duration = lrintf(av_frame_get_pkt_duration(next_picture) * av_q2d(ist->st->time_base) / av_q2d(enc->time_base));
906  }
907 
908  sync_ipts = next_picture->pts;
909  delta0 = sync_ipts - ost->sync_opts;
910  delta = delta0 + duration;
911 
912  /* by default, we output a single frame */
913  nb0_frames = 0;
914  nb_frames = 1;
915 
916  format_video_sync = video_sync_method;
917  if (format_video_sync == VSYNC_AUTO) {
918  if(!strcmp(s->oformat->name, "avi")) {
919  format_video_sync = VSYNC_VFR;
920  } else
922  if ( ist
923  && format_video_sync == VSYNC_CFR
924  && input_files[ist->file_index]->ctx->nb_streams == 1
925  && input_files[ist->file_index]->input_ts_offset == 0) {
926  format_video_sync = VSYNC_VSCFR;
927  }
928  if (format_video_sync == VSYNC_CFR && copy_ts) {
929  format_video_sync = VSYNC_VSCFR;
930  }
931  }
932 
933  if (delta0 < 0 &&
934  delta > 0 &&
935  format_video_sync != VSYNC_PASSTHROUGH &&
936  format_video_sync != VSYNC_DROP) {
937  double cor = FFMIN(-delta0, duration);
938  av_log(NULL, AV_LOG_WARNING, "Past duration %f too large\n", -delta0);
939  sync_ipts += cor;
940  duration -= cor;
941  delta0 += cor;
942  }
943 
944  switch (format_video_sync) {
945  case VSYNC_VSCFR:
946  if (ost->frame_number == 0 && delta - duration >= 0.5) {
947  av_log(NULL, AV_LOG_DEBUG, "Not duplicating %d initial frames\n", (int)lrintf(delta - duration));
948  delta = duration;
949  delta0 = 0;
950  ost->sync_opts = lrint(sync_ipts);
951  }
952  case VSYNC_CFR:
953  // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
954  if (delta < -1.1)
955  nb_frames = 0;
956  else if (delta > 1.1) {
957  nb_frames = lrintf(delta);
958  if (delta0 > 1.1)
959  nb0_frames = lrintf(delta0 - 0.6);
960  }
961  break;
962  case VSYNC_VFR:
963  if (delta <= -0.6)
964  nb_frames = 0;
965  else if (delta > 0.6)
966  ost->sync_opts = lrint(sync_ipts);
967  break;
968  case VSYNC_DROP:
969  case VSYNC_PASSTHROUGH:
970  ost->sync_opts = lrint(sync_ipts);
971  break;
972  default:
973  av_assert0(0);
974  }
975 
976  nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
977  nb0_frames = FFMIN(nb0_frames, nb_frames);
978  if (nb0_frames == 0 && ost->last_droped) {
979  nb_frames_drop++;
980  av_log(NULL, AV_LOG_VERBOSE,
981  "*** dropping frame %d from stream %d at ts %"PRId64"\n",
982  ost->frame_number, ost->st->index, ost->last_frame->pts);
983  }
984  if (nb_frames > (nb0_frames && ost->last_droped) + (nb_frames > nb0_frames)) {
985  if (nb_frames > dts_error_threshold * 30) {
986  av_log(NULL, AV_LOG_ERROR, "%d frame duplication too large, skipping\n", nb_frames - 1);
987  nb_frames_drop++;
988  return;
989  }
990  nb_frames_dup += nb_frames - (nb0_frames && ost->last_droped) - (nb_frames > nb0_frames);
991  av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
992  }
993  ost->last_droped = nb_frames == nb0_frames;
994 
995  /* duplicates frame if needed */
996  for (i = 0; i < nb_frames; i++) {
997  AVFrame *in_picture;
998  av_init_packet(&pkt);
999  pkt.data = NULL;
1000  pkt.size = 0;
1001 
1002  if (i < nb0_frames && ost->last_frame) {
1003  in_picture = ost->last_frame;
1004  } else
1005  in_picture = next_picture;
1006 
1007  in_picture->pts = ost->sync_opts;
1008 
1009 #if 1
1010  if (!check_recording_time(ost))
1011 #else
1012  if (ost->frame_number >= ost->max_frames)
1013 #endif
1014  return;
1015 
1016  if (s->oformat->flags & AVFMT_RAWPICTURE &&
1017  enc->codec->id == AV_CODEC_ID_RAWVIDEO) {
1018  /* raw pictures are written as AVPicture structure to
1019  avoid any copies. We support temporarily the older
1020  method. */
1021  if (in_picture->interlaced_frame)
1022  mux_enc->field_order = in_picture->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
1023  else
1024  mux_enc->field_order = AV_FIELD_PROGRESSIVE;
1025  pkt.data = (uint8_t *)in_picture;
1026  pkt.size = sizeof(AVPicture);
1027  pkt.pts = av_rescale_q(in_picture->pts, enc->time_base, ost->st->time_base);
1028  pkt.flags |= AV_PKT_FLAG_KEY;
1029 
1030  write_frame(s, &pkt, ost);
1031  } else {
1032  int got_packet, forced_keyframe = 0;
1033  double pts_time;
1034 
1036  ost->top_field_first >= 0)
1037  in_picture->top_field_first = !!ost->top_field_first;
1038 
1039  if (in_picture->interlaced_frame) {
1040  if (enc->codec->id == AV_CODEC_ID_MJPEG)
1041  mux_enc->field_order = in_picture->top_field_first ? AV_FIELD_TT:AV_FIELD_BB;
1042  else
1043  mux_enc->field_order = in_picture->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
1044  } else
1045  mux_enc->field_order = AV_FIELD_PROGRESSIVE;
1046 
1047  in_picture->quality = enc->global_quality;
1048  in_picture->pict_type = 0;
1049 
1050  pts_time = in_picture->pts != AV_NOPTS_VALUE ?
1051  in_picture->pts * av_q2d(enc->time_base) : NAN;
1052  if (ost->forced_kf_index < ost->forced_kf_count &&
1053  in_picture->pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1054  ost->forced_kf_index++;
1055  forced_keyframe = 1;
1056  } else if (ost->forced_keyframes_pexpr) {
1057  double res;
1058  ost->forced_keyframes_expr_const_values[FKF_T] = pts_time;
1061  av_dlog(NULL, "force_key_frame: n:%f n_forced:%f prev_forced_n:%f t:%f prev_forced_t:%f -> res:%f\n",
1067  res);
1068  if (res) {
1069  forced_keyframe = 1;
1075  }
1076 
1078  }
1079 
1080  if (forced_keyframe) {
1081  in_picture->pict_type = AV_PICTURE_TYPE_I;
1082  av_log(NULL, AV_LOG_DEBUG, "Forced keyframe at time %f\n", pts_time);
1083  }
1084 
1085  update_benchmark(NULL);
1086  if (debug_ts) {
1087  av_log(NULL, AV_LOG_INFO, "encoder <- type:video "
1088  "frame_pts:%s frame_pts_time:%s time_base:%d/%d\n",
1089  av_ts2str(in_picture->pts), av_ts2timestr(in_picture->pts, &enc->time_base),
1090  enc->time_base.num, enc->time_base.den);
1091  }
1092 
1093  ost->frames_encoded++;
1094 
1095  ret = avcodec_encode_video2(enc, &pkt, in_picture, &got_packet);
1096  update_benchmark("encode_video %d.%d", ost->file_index, ost->index);
1097  if (ret < 0) {
1098  av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1099  exit_program(1);
1100  }
1101 
1102  if (got_packet) {
1103  if (debug_ts) {
1104  av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
1105  "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
1106  av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &enc->time_base),
1107  av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &enc->time_base));
1108  }
1109 
1110  if (pkt.pts == AV_NOPTS_VALUE && !(enc->codec->capabilities & CODEC_CAP_DELAY))
1111  pkt.pts = ost->sync_opts;
1112 
1113  av_packet_rescale_ts(&pkt, enc->time_base, ost->st->time_base);
1114 
1115  if (debug_ts) {
1116  av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
1117  "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
1118  av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
1119  av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
1120  }
1121 
1122  frame_size = pkt.size;
1123  write_frame(s, &pkt, ost);
1124 
1125  /* if two pass, output log */
1126  if (ost->logfile && enc->stats_out) {
1127  fprintf(ost->logfile, "%s", enc->stats_out);
1128  }
1129  }
1130  }
1131  ost->sync_opts++;
1132  /*
1133  * For video, number of frames in == number of packets out.
1134  * But there may be reordering, so we can't throw away frames on encoder
1135  * flush, we need to limit them here, before they go into encoder.
1136  */
1137  ost->frame_number++;
1138 
1139  if (vstats_filename && frame_size)
1140  do_video_stats(ost, frame_size);
1141  }
1142 
1143  if (!ost->last_frame)
1144  ost->last_frame = av_frame_alloc();
1145  av_frame_unref(ost->last_frame);
1146  av_frame_ref(ost->last_frame, next_picture);
1147 }
1148 
1149 static double psnr(double d)
1150 {
1151  return -10.0 * log(d) / log(10.0);
1152 }
1153 
1155 {
1156  AVCodecContext *enc;
1157  int frame_number;
1158  double ti1, bitrate, avg_bitrate;
1159 
1160  /* this is executed just the first time do_video_stats is called */
1161  if (!vstats_file) {
1162  vstats_file = fopen(vstats_filename, "w");
1163  if (!vstats_file) {
1164  perror("fopen");
1165  exit_program(1);
1166  }
1167  }
1168 
1169  enc = ost->enc_ctx;
1170  if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1171  frame_number = ost->st->nb_frames;
1172  fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
1173  if (enc->flags&CODEC_FLAG_PSNR)
1174  fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
1175 
1176  fprintf(vstats_file,"f_size= %6d ", frame_size);
1177  /* compute pts value */
1178  ti1 = av_stream_get_end_pts(ost->st) * av_q2d(ost->st->time_base);
1179  if (ti1 < 0.01)
1180  ti1 = 0.01;
1181 
1182  bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1183  avg_bitrate = (double)(ost->data_size * 8) / ti1 / 1000.0;
1184  fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1185  (double)ost->data_size / 1024, ti1, bitrate, avg_bitrate);
1186  fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1187  }
1188 }
1189 
1191 {
1192  OutputFile *of = output_files[ost->file_index];
1193  int i;
1194 
1196 
1197  if (of->shortest) {
1198  for (i = 0; i < of->ctx->nb_streams; i++)
1199  output_streams[of->ost_index + i]->finished = ENCODER_FINISHED | MUXER_FINISHED;
1200  }
1201 }
1202 
1203 /**
1204  * Get and encode new output from any of the filtergraphs, without causing
1205  * activity.
1206  *
1207  * @return 0 for success, <0 for severe errors
1208  */
1209 static int reap_filters(void)
1210 {
1211  AVFrame *filtered_frame = NULL;
1212  int i;
1213  int64_t frame_pts;
1214 
1215  /* Reap all buffers present in the buffer sinks */
1216  for (i = 0; i < nb_output_streams; i++) {
1217  OutputStream *ost = output_streams[i];
1218  OutputFile *of = output_files[ost->file_index];
1220  AVCodecContext *enc = ost->enc_ctx;
1221  int ret = 0;
1222 
1223  if (!ost->filter)
1224  continue;
1225  filter = ost->filter->filter;
1226 
1227  if (!ost->filtered_frame && !(ost->filtered_frame = av_frame_alloc())) {
1228  return AVERROR(ENOMEM);
1229  }
1230  filtered_frame = ost->filtered_frame;
1231 
1232  while (1) {
1233  ret = av_buffersink_get_frame_flags(filter, filtered_frame,
1235  if (ret < 0) {
1236  if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF) {
1237  av_log(NULL, AV_LOG_WARNING,
1238  "Error in av_buffersink_get_frame_flags(): %s\n", av_err2str(ret));
1239  }
1240  break;
1241  }
1242  if (ost->finished) {
1243  av_frame_unref(filtered_frame);
1244  continue;
1245  }
1246  frame_pts = AV_NOPTS_VALUE;
1247  if (filtered_frame->pts != AV_NOPTS_VALUE) {
1248  int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time;
1249  filtered_frame->pts = frame_pts =
1250  av_rescale_q(filtered_frame->pts, filter->inputs[0]->time_base, enc->time_base) -
1251  av_rescale_q(start_time, AV_TIME_BASE_Q, enc->time_base);
1252  }
1253  //if (ost->source_index >= 0)
1254  // *filtered_frame= *input_streams[ost->source_index]->decoded_frame; //for me_threshold
1255 
1256  switch (filter->inputs[0]->type) {
1257  case AVMEDIA_TYPE_VIDEO:
1258  filtered_frame->pts = frame_pts;
1259  if (!ost->frame_aspect_ratio.num)
1260  enc->sample_aspect_ratio = filtered_frame->sample_aspect_ratio;
1261 
1262  if (debug_ts) {
1263  av_log(NULL, AV_LOG_INFO, "filter -> pts:%s pts_time:%s time_base:%d/%d\n",
1264  av_ts2str(filtered_frame->pts), av_ts2timestr(filtered_frame->pts, &enc->time_base),
1265  enc->time_base.num, enc->time_base.den);
1266  }
1267 
1268  do_video_out(of->ctx, ost, filtered_frame);
1269  break;
1270  case AVMEDIA_TYPE_AUDIO:
1271  filtered_frame->pts = frame_pts;
1272  if (!(enc->codec->capabilities & CODEC_CAP_PARAM_CHANGE) &&
1273  enc->channels != av_frame_get_channels(filtered_frame)) {
1274  av_log(NULL, AV_LOG_ERROR,
1275  "Audio filter graph output is not normalized and encoder does not support parameter changes\n");
1276  break;
1277  }
1278  do_audio_out(of->ctx, ost, filtered_frame);
1279  break;
1280  default:
1281  // TODO support subtitle filters
1282  av_assert0(0);
1283  }
1284 
1285  av_frame_unref(filtered_frame);
1286  }
1287  }
1288 
1289  return 0;
1290 }
1291 
1292 static void print_final_stats(int64_t total_size)
1293 {
1294  uint64_t video_size = 0, audio_size = 0, extra_size = 0, other_size = 0;
1295  uint64_t subtitle_size = 0;
1296  uint64_t data_size = 0;
1297  float percent = -1.0;
1298  int i, j;
1299 
1300  for (i = 0; i < nb_output_streams; i++) {
1301  OutputStream *ost = output_streams[i];
1302  switch (ost->enc_ctx->codec_type) {
1303  case AVMEDIA_TYPE_VIDEO: video_size += ost->data_size; break;
1304  case AVMEDIA_TYPE_AUDIO: audio_size += ost->data_size; break;
1305  case AVMEDIA_TYPE_SUBTITLE: subtitle_size += ost->data_size; break;
1306  default: other_size += ost->data_size; break;
1307  }
1308  extra_size += ost->enc_ctx->extradata_size;
1309  data_size += ost->data_size;
1310  }
1311 
1312  if (data_size && total_size>0 && total_size >= data_size)
1313  percent = 100.0 * (total_size - data_size) / data_size;
1314 
1315  av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB subtitle:%1.0fkB other streams:%1.0fkB global headers:%1.0fkB muxing overhead: ",
1316  video_size / 1024.0,
1317  audio_size / 1024.0,
1318  subtitle_size / 1024.0,
1319  other_size / 1024.0,
1320  extra_size / 1024.0);
1321  if (percent >= 0.0)
1322  av_log(NULL, AV_LOG_INFO, "%f%%", percent);
1323  else
1324  av_log(NULL, AV_LOG_INFO, "unknown");
1325  av_log(NULL, AV_LOG_INFO, "\n");
1326 
1327  /* print verbose per-stream stats */
1328  for (i = 0; i < nb_input_files; i++) {
1329  InputFile *f = input_files[i];
1330  uint64_t total_packets = 0, total_size = 0;
1331 
1332  av_log(NULL, AV_LOG_VERBOSE, "Input file #%d (%s):\n",
1333  i, f->ctx->filename);
1334 
1335  for (j = 0; j < f->nb_streams; j++) {
1336  InputStream *ist = input_streams[f->ist_index + j];
1337  enum AVMediaType type = ist->dec_ctx->codec_type;
1338 
1339  total_size += ist->data_size;
1340  total_packets += ist->nb_packets;
1341 
1342  av_log(NULL, AV_LOG_VERBOSE, " Input stream #%d:%d (%s): ",
1343  i, j, media_type_string(type));
1344  av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" packets read (%"PRIu64" bytes); ",
1345  ist->nb_packets, ist->data_size);
1346 
1347  if (ist->decoding_needed) {
1348  av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" frames decoded",
1349  ist->frames_decoded);
1350  if (type == AVMEDIA_TYPE_AUDIO)
1351  av_log(NULL, AV_LOG_VERBOSE, " (%"PRIu64" samples)", ist->samples_decoded);
1352  av_log(NULL, AV_LOG_VERBOSE, "; ");
1353  }
1354 
1355  av_log(NULL, AV_LOG_VERBOSE, "\n");
1356  }
1357 
1358  av_log(NULL, AV_LOG_VERBOSE, " Total: %"PRIu64" packets (%"PRIu64" bytes) demuxed\n",
1359  total_packets, total_size);
1360  }
1361 
1362  for (i = 0; i < nb_output_files; i++) {
1363  OutputFile *of = output_files[i];
1364  uint64_t total_packets = 0, total_size = 0;
1365 
1366  av_log(NULL, AV_LOG_VERBOSE, "Output file #%d (%s):\n",
1367  i, of->ctx->filename);
1368 
1369  for (j = 0; j < of->ctx->nb_streams; j++) {
1370  OutputStream *ost = output_streams[of->ost_index + j];
1371  enum AVMediaType type = ost->enc_ctx->codec_type;
1372 
1373  total_size += ost->data_size;
1374  total_packets += ost->packets_written;
1375 
1376  av_log(NULL, AV_LOG_VERBOSE, " Output stream #%d:%d (%s): ",
1377  i, j, media_type_string(type));
1378  if (ost->encoding_needed) {
1379  av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" frames encoded",
1380  ost->frames_encoded);
1381  if (type == AVMEDIA_TYPE_AUDIO)
1382  av_log(NULL, AV_LOG_VERBOSE, " (%"PRIu64" samples)", ost->samples_encoded);
1383  av_log(NULL, AV_LOG_VERBOSE, "; ");
1384  }
1385 
1386  av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" packets muxed (%"PRIu64" bytes); ",
1387  ost->packets_written, ost->data_size);
1388 
1389  av_log(NULL, AV_LOG_VERBOSE, "\n");
1390  }
1391 
1392  av_log(NULL, AV_LOG_VERBOSE, " Total: %"PRIu64" packets (%"PRIu64" bytes) muxed\n",
1393  total_packets, total_size);
1394  }
1395  if(video_size + data_size + audio_size + subtitle_size + extra_size == 0){
1396  av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)\n");
1397  }
1398 }
1399 
1400 static void print_report(int is_last_report, int64_t timer_start, int64_t cur_time)
1401 {
1402  char buf[1024];
1403  AVBPrint buf_script;
1404  OutputStream *ost;
1405  AVFormatContext *oc;
1406  int64_t total_size;
1407  AVCodecContext *enc;
1408  int frame_number, vid, i;
1409  double bitrate;
1410  int64_t pts = INT64_MIN;
1411  static int64_t last_time = -1;
1412  static int qp_histogram[52];
1413  int hours, mins, secs, us;
1414 
1415  if (!print_stats && !is_last_report && !progress_avio)
1416  return;
1417 
1418  if (!is_last_report) {
1419  if (last_time == -1) {
1420  last_time = cur_time;
1421  return;
1422  }
1423  if ((cur_time - last_time) < 500000)
1424  return;
1425  last_time = cur_time;
1426  }
1427 
1428 
1429  oc = output_files[0]->ctx;
1430 
1431  total_size = avio_size(oc->pb);
1432  if (total_size <= 0) // FIXME improve avio_size() so it works with non seekable output too
1433  total_size = avio_tell(oc->pb);
1434 
1435  buf[0] = '\0';
1436  vid = 0;
1437  av_bprint_init(&buf_script, 0, 1);
1438  for (i = 0; i < nb_output_streams; i++) {
1439  float q = -1;
1440  ost = output_streams[i];
1441  enc = ost->enc_ctx;
1442  if (!ost->stream_copy && enc->coded_frame)
1443  q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
1444  if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1445  snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1446  av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1447  ost->file_index, ost->index, q);
1448  }
1449  if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1450  float fps, t = (cur_time-timer_start) / 1000000.0;
1451 
1452  frame_number = ost->frame_number;
1453  fps = t > 1 ? frame_number / t : 0;
1454  snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3.*f q=%3.1f ",
1455  frame_number, fps < 9.95, fps, q);
1456  av_bprintf(&buf_script, "frame=%d\n", frame_number);
1457  av_bprintf(&buf_script, "fps=%.1f\n", fps);
1458  av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1459  ost->file_index, ost->index, q);
1460  if (is_last_report)
1461  snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1462  if (qp_hist) {
1463  int j;
1464  int qp = lrintf(q);
1465  if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
1466  qp_histogram[qp]++;
1467  for (j = 0; j < 32; j++)
1468  snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log2(qp_histogram[j] + 1)));
1469  }
1470  if ((enc->flags&CODEC_FLAG_PSNR) && (enc->coded_frame || is_last_report)) {
1471  int j;
1472  double error, error_sum = 0;
1473  double scale, scale_sum = 0;
1474  double p;
1475  char type[3] = { 'Y','U','V' };
1476  snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1477  for (j = 0; j < 3; j++) {
1478  if (is_last_report) {
1479  error = enc->error[j];
1480  scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
1481  } else {
1482  error = enc->coded_frame->error[j];
1483  scale = enc->width * enc->height * 255.0 * 255.0;
1484  }
1485  if (j)
1486  scale /= 4;
1487  error_sum += error;
1488  scale_sum += scale;
1489  p = psnr(error / scale);
1490  snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], p);
1491  av_bprintf(&buf_script, "stream_%d_%d_psnr_%c=%2.2f\n",
1492  ost->file_index, ost->index, type[j] | 32, p);
1493  }
1494  p = psnr(error_sum / scale_sum);
1495  snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
1496  av_bprintf(&buf_script, "stream_%d_%d_psnr_all=%2.2f\n",
1497  ost->file_index, ost->index, p);
1498  }
1499  vid = 1;
1500  }
1501  /* compute min output value */
1503  pts = FFMAX(pts, av_rescale_q(av_stream_get_end_pts(ost->st),
1504  ost->st->time_base, AV_TIME_BASE_Q));
1505  if (is_last_report)
1506  nb_frames_drop += ost->last_droped;
1507  }
1508 
1509  secs = pts / AV_TIME_BASE;
1510  us = pts % AV_TIME_BASE;
1511  mins = secs / 60;
1512  secs %= 60;
1513  hours = mins / 60;
1514  mins %= 60;
1515 
1516  bitrate = pts && total_size >= 0 ? total_size * 8 / (pts / 1000.0) : -1;
1517 
1518  if (total_size < 0) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1519  "size=N/A time=");
1520  else snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1521  "size=%8.0fkB time=", total_size / 1024.0);
1522  snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1523  "%02d:%02d:%02d.%02d ", hours, mins, secs,
1524  (100 * us) / AV_TIME_BASE);
1525  if (bitrate < 0) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1526  "bitrate=N/A");
1527  else snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1528  "bitrate=%6.1fkbits/s", bitrate);
1529  if (total_size < 0) av_bprintf(&buf_script, "total_size=N/A\n");
1530  else av_bprintf(&buf_script, "total_size=%"PRId64"\n", total_size);
1531  av_bprintf(&buf_script, "out_time_ms=%"PRId64"\n", pts);
1532  av_bprintf(&buf_script, "out_time=%02d:%02d:%02d.%06d\n",
1533  hours, mins, secs, us);
1534 
1536  snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1538  av_bprintf(&buf_script, "dup_frames=%d\n", nb_frames_dup);
1539  av_bprintf(&buf_script, "drop_frames=%d\n", nb_frames_drop);
1540 
1541  if (print_stats || is_last_report) {
1542  const char end = is_last_report ? '\n' : '\r';
1543  if (print_stats==1 && AV_LOG_INFO > av_log_get_level()) {
1544  fprintf(stderr, "%s %c", buf, end);
1545  } else
1546  av_log(NULL, AV_LOG_INFO, "%s %c", buf, end);
1547 
1548  fflush(stderr);
1549  }
1550 
1551  if (progress_avio) {
1552  av_bprintf(&buf_script, "progress=%s\n",
1553  is_last_report ? "end" : "continue");
1554  avio_write(progress_avio, buf_script.str,
1555  FFMIN(buf_script.len, buf_script.size - 1));
1556  avio_flush(progress_avio);
1557  av_bprint_finalize(&buf_script, NULL);
1558  if (is_last_report) {
1559  avio_close(progress_avio);
1560  progress_avio = NULL;
1561  }
1562  }
1563 
1564  if (is_last_report)
1565  print_final_stats(total_size);
1566 }
1567 
1568 static void flush_encoders(void)
1569 {
1570  int i, ret;
1571 
1572  for (i = 0; i < nb_output_streams; i++) {
1573  OutputStream *ost = output_streams[i];
1574  AVCodecContext *enc = ost->enc_ctx;
1575  AVFormatContext *os = output_files[ost->file_index]->ctx;
1576  int stop_encoding = 0;
1577 
1578  if (!ost->encoding_needed)
1579  continue;
1580 
1581  if (enc->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
1582  continue;
1584  continue;
1585 
1586  for (;;) {
1587  int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL;
1588  const char *desc;
1589 
1590  switch (enc->codec_type) {
1591  case AVMEDIA_TYPE_AUDIO:
1592  encode = avcodec_encode_audio2;
1593  desc = "Audio";
1594  break;
1595  case AVMEDIA_TYPE_VIDEO:
1596  encode = avcodec_encode_video2;
1597  desc = "Video";
1598  break;
1599  default:
1600  stop_encoding = 1;
1601  }
1602 
1603  if (encode) {
1604  AVPacket pkt;
1605  int pkt_size;
1606  int got_packet;
1607  av_init_packet(&pkt);
1608  pkt.data = NULL;
1609  pkt.size = 0;
1610 
1611  update_benchmark(NULL);
1612  ret = encode(enc, &pkt, NULL, &got_packet);
1613  update_benchmark("flush %s %d.%d", desc, ost->file_index, ost->index);
1614  if (ret < 0) {
1615  av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
1616  exit_program(1);
1617  }
1618  if (ost->logfile && enc->stats_out) {
1619  fprintf(ost->logfile, "%s", enc->stats_out);
1620  }
1621  if (!got_packet) {
1622  stop_encoding = 1;
1623  break;
1624  }
1625  if (ost->finished & MUXER_FINISHED) {
1626  av_free_packet(&pkt);
1627  continue;
1628  }
1629  av_packet_rescale_ts(&pkt, enc->time_base, ost->st->time_base);
1630  pkt_size = pkt.size;
1631  write_frame(os, &pkt, ost);
1633  do_video_stats(ost, pkt_size);
1634  }
1635  }
1636 
1637  if (stop_encoding)
1638  break;
1639  }
1640  }
1641 }
1642 
1643 /*
1644  * Check whether a packet from ist should be written into ost at this time
1645  */
1647 {
1648  OutputFile *of = output_files[ost->file_index];
1649  int ist_index = input_files[ist->file_index]->ist_index + ist->st->index;
1650 
1651  if (ost->source_index != ist_index)
1652  return 0;
1653 
1654  if (ost->finished)
1655  return 0;
1656 
1657  if (of->start_time != AV_NOPTS_VALUE && ist->pts < of->start_time)
1658  return 0;
1659 
1660  return 1;
1661 }
1662 
1663 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1664 {
1665  OutputFile *of = output_files[ost->file_index];
1666  InputFile *f = input_files [ist->file_index];
1667  int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time;
1668  int64_t ost_tb_start_time = av_rescale_q(start_time, AV_TIME_BASE_Q, ost->st->time_base);
1669  int64_t ist_tb_start_time = av_rescale_q(start_time, AV_TIME_BASE_Q, ist->st->time_base);
1670  AVPicture pict;
1671  AVPacket opkt;
1672 
1673  av_init_packet(&opkt);
1674 
1675  if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1677  return;
1678 
1679  if (pkt->pts == AV_NOPTS_VALUE) {
1680  if (!ost->frame_number && ist->pts < start_time &&
1681  !ost->copy_prior_start)
1682  return;
1683  } else {
1684  if (!ost->frame_number && pkt->pts < ist_tb_start_time &&
1685  !ost->copy_prior_start)
1686  return;
1687  }
1688 
1689  if (of->recording_time != INT64_MAX &&
1690  ist->pts >= of->recording_time + start_time) {
1691  close_output_stream(ost);
1692  return;
1693  }
1694 
1695  if (f->recording_time != INT64_MAX) {
1696  start_time = f->ctx->start_time;
1697  if (f->start_time != AV_NOPTS_VALUE)
1698  start_time += f->start_time;
1699  if (ist->pts >= f->recording_time + start_time) {
1700  close_output_stream(ost);
1701  return;
1702  }
1703  }
1704 
1705  /* force the input stream PTS */
1706  if (ost->enc_ctx->codec_type == AVMEDIA_TYPE_VIDEO)
1707  ost->sync_opts++;
1708 
1709  if (pkt->pts != AV_NOPTS_VALUE)
1710  opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1711  else
1712  opkt.pts = AV_NOPTS_VALUE;
1713 
1714  if (pkt->dts == AV_NOPTS_VALUE)
1715  opkt.dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ost->st->time_base);
1716  else
1717  opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1718  opkt.dts -= ost_tb_start_time;
1719 
1720  if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && pkt->dts != AV_NOPTS_VALUE) {
1722  if(!duration)
1723  duration = ist->dec_ctx->frame_size;
1724  opkt.dts = opkt.pts = av_rescale_delta(ist->st->time_base, pkt->dts,
1726  ost->st->time_base) - ost_tb_start_time;
1727  }
1728 
1729  opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1730  opkt.flags = pkt->flags;
1731 
1732  // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1733  if ( ost->enc_ctx->codec_id != AV_CODEC_ID_H264
1734  && ost->enc_ctx->codec_id != AV_CODEC_ID_MPEG1VIDEO
1735  && ost->enc_ctx->codec_id != AV_CODEC_ID_MPEG2VIDEO
1736  && ost->enc_ctx->codec_id != AV_CODEC_ID_VC1
1737  ) {
1738  if (av_parser_change(ost->parser, ost->st->codec,
1739  &opkt.data, &opkt.size,
1740  pkt->data, pkt->size,
1741  pkt->flags & AV_PKT_FLAG_KEY)) {
1742  opkt.buf = av_buffer_create(opkt.data, opkt.size, av_buffer_default_free, NULL, 0);
1743  if (!opkt.buf)
1744  exit_program(1);
1745  }
1746  } else {
1747  opkt.data = pkt->data;
1748  opkt.size = pkt->size;
1749  }
1750  av_copy_packet_side_data(&opkt, pkt);
1751 
1752  if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (of->ctx->oformat->flags & AVFMT_RAWPICTURE)) {
1753  /* store AVPicture in AVPacket, as expected by the output format */
1754  avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
1755  opkt.data = (uint8_t *)&pict;
1756  opkt.size = sizeof(AVPicture);
1757  opkt.flags |= AV_PKT_FLAG_KEY;
1758  }
1759 
1760  write_frame(of->ctx, &opkt, ost);
1761 }
1762 
1764 {
1765  AVCodecContext *dec = ist->dec_ctx;
1766 
1767  if (!dec->channel_layout) {
1768  char layout_name[256];
1769 
1770  if (dec->channels > ist->guess_layout_max)
1771  return 0;
1773  if (!dec->channel_layout)
1774  return 0;
1775  av_get_channel_layout_string(layout_name, sizeof(layout_name),
1776  dec->channels, dec->channel_layout);
1777  av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for Input Stream "
1778  "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
1779  }
1780  return 1;
1781 }
1782 
1783 static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1784 {
1785  AVFrame *decoded_frame, *f;
1786  AVCodecContext *avctx = ist->dec_ctx;
1787  int i, ret, err = 0, resample_changed;
1788  AVRational decoded_frame_tb;
1789 
1790  if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
1791  return AVERROR(ENOMEM);
1792  if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
1793  return AVERROR(ENOMEM);
1794  decoded_frame = ist->decoded_frame;
1795 
1796  update_benchmark(NULL);
1797  ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
1798  update_benchmark("decode_audio %d.%d", ist->file_index, ist->st->index);
1799 
1800  if (ret >= 0 && avctx->sample_rate <= 0) {
1801  av_log(avctx, AV_LOG_ERROR, "Sample rate %d invalid\n", avctx->sample_rate);
1802  ret = AVERROR_INVALIDDATA;
1803  }
1804 
1805  if (*got_output || ret<0 || pkt->size)
1806  decode_error_stat[ret<0] ++;
1807 
1808  if (!*got_output || ret < 0) {
1809  if (!pkt->size) {
1810  for (i = 0; i < ist->nb_filters; i++)
1811 #if 1
1812  av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1813 #else
1814  av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
1815 #endif
1816  }
1817  return ret;
1818  }
1819 
1820  ist->samples_decoded += decoded_frame->nb_samples;
1821  ist->frames_decoded++;
1822 
1823 #if 1
1824  /* increment next_dts to use for the case where the input stream does not
1825  have timestamps or there are multiple frames in the packet */
1826  ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1827  avctx->sample_rate;
1828  ist->next_dts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1829  avctx->sample_rate;
1830 #endif
1831 
1832  resample_changed = ist->resample_sample_fmt != decoded_frame->format ||
1833  ist->resample_channels != avctx->channels ||
1834  ist->resample_channel_layout != decoded_frame->channel_layout ||
1835  ist->resample_sample_rate != decoded_frame->sample_rate;
1836  if (resample_changed) {
1837  char layout1[64], layout2[64];
1838 
1839  if (!guess_input_channel_layout(ist)) {
1840  av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
1841  "layout for Input Stream #%d.%d\n", ist->file_index,
1842  ist->st->index);
1843  exit_program(1);
1844  }
1845  decoded_frame->channel_layout = avctx->channel_layout;
1846 
1847  av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels,
1849  av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels,
1850  decoded_frame->channel_layout);
1851 
1852  av_log(NULL, AV_LOG_INFO,
1853  "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",
1854  ist->file_index, ist->st->index,
1856  ist->resample_channels, layout1,
1857  decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format),
1858  avctx->channels, layout2);
1859 
1860  ist->resample_sample_fmt = decoded_frame->format;
1861  ist->resample_sample_rate = decoded_frame->sample_rate;
1862  ist->resample_channel_layout = decoded_frame->channel_layout;
1863  ist->resample_channels = avctx->channels;
1864 
1865  for (i = 0; i < nb_filtergraphs; i++)
1866  if (ist_in_filtergraph(filtergraphs[i], ist)) {
1867  FilterGraph *fg = filtergraphs[i];
1868  if (configure_filtergraph(fg) < 0) {
1869  av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1870  exit_program(1);
1871  }
1872  }
1873  }
1874 
1875  /* if the decoder provides a pts, use it instead of the last packet pts.
1876  the decoder could be delaying output by a packet or more. */
1877  if (decoded_frame->pts != AV_NOPTS_VALUE) {
1878  ist->dts = ist->next_dts = ist->pts = ist->next_pts = av_rescale_q(decoded_frame->pts, avctx->time_base, AV_TIME_BASE_Q);
1879  decoded_frame_tb = avctx->time_base;
1880  } else if (decoded_frame->pkt_pts != AV_NOPTS_VALUE) {
1881  decoded_frame->pts = decoded_frame->pkt_pts;
1882  decoded_frame_tb = ist->st->time_base;
1883  } else if (pkt->pts != AV_NOPTS_VALUE) {
1884  decoded_frame->pts = pkt->pts;
1885  decoded_frame_tb = ist->st->time_base;
1886  }else {
1887  decoded_frame->pts = ist->dts;
1888  decoded_frame_tb = AV_TIME_BASE_Q;
1889  }
1890  pkt->pts = AV_NOPTS_VALUE;
1891  if (decoded_frame->pts != AV_NOPTS_VALUE)
1892  decoded_frame->pts = av_rescale_delta(decoded_frame_tb, decoded_frame->pts,
1893  (AVRational){1, avctx->sample_rate}, decoded_frame->nb_samples, &ist->filter_in_rescale_delta_last,
1894  (AVRational){1, avctx->sample_rate});
1895  for (i = 0; i < ist->nb_filters; i++) {
1896  if (i < ist->nb_filters - 1) {
1897  f = ist->filter_frame;
1898  err = av_frame_ref(f, decoded_frame);
1899  if (err < 0)
1900  break;
1901  } else
1902  f = decoded_frame;
1903  err = av_buffersrc_add_frame_flags(ist->filters[i]->filter, f,
1905  if (err == AVERROR_EOF)
1906  err = 0; /* ignore */
1907  if (err < 0)
1908  break;
1909  }
1910  decoded_frame->pts = AV_NOPTS_VALUE;
1911 
1912  av_frame_unref(ist->filter_frame);
1913  av_frame_unref(decoded_frame);
1914  return err < 0 ? err : ret;
1915 }
1916 
1917 static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output)
1918 {
1919  AVFrame *decoded_frame, *f;
1920  int i, ret = 0, err = 0, resample_changed;
1921  int64_t best_effort_timestamp;
1922  AVRational *frame_sample_aspect;
1923 
1924  if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
1925  return AVERROR(ENOMEM);
1926  if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
1927  return AVERROR(ENOMEM);
1928  decoded_frame = ist->decoded_frame;
1929  pkt->dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
1930 
1931  update_benchmark(NULL);
1932  ret = avcodec_decode_video2(ist->dec_ctx,
1933  decoded_frame, got_output, pkt);
1934  update_benchmark("decode_video %d.%d", ist->file_index, ist->st->index);
1935 
1936  // The following line may be required in some cases where there is no parser
1937  // or the parser does not has_b_frames correctly
1938  if (ist->st->codec->has_b_frames < ist->dec_ctx->has_b_frames) {
1939  if (ist->dec_ctx->codec_id == AV_CODEC_ID_H264) {
1940  ist->st->codec->has_b_frames = ist->dec_ctx->has_b_frames;
1941  } else
1943  ist->dec_ctx,
1944  "has_b_frames is larger in decoder than demuxer %d > %d ",
1945  ist->dec_ctx->has_b_frames,
1946  ist->st->codec->has_b_frames
1947  );
1948  }
1949 
1950  if (*got_output || ret<0 || pkt->size)
1951  decode_error_stat[ret<0] ++;
1952 
1953  if (*got_output && ret >= 0) {
1954  if (ist->dec_ctx->width != decoded_frame->width ||
1955  ist->dec_ctx->height != decoded_frame->height ||
1956  ist->dec_ctx->pix_fmt != decoded_frame->format) {
1957  av_log(NULL, AV_LOG_DEBUG, "Frame parameters mismatch context %d,%d,%d != %d,%d,%d\n",
1958  decoded_frame->width,
1959  decoded_frame->height,
1960  decoded_frame->format,
1961  ist->dec_ctx->width,
1962  ist->dec_ctx->height,
1963  ist->dec_ctx->pix_fmt);
1964  }
1965  }
1966 
1967  if (!*got_output || ret < 0) {
1968  if (!pkt->size) {
1969  for (i = 0; i < ist->nb_filters; i++)
1970 #if 1
1971  av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1972 #else
1973  av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
1974 #endif
1975  }
1976  return ret;
1977  }
1978 
1979  if(ist->top_field_first>=0)
1980  decoded_frame->top_field_first = ist->top_field_first;
1981 
1982  ist->frames_decoded++;
1983 
1984  if (ist->hwaccel_retrieve_data && decoded_frame->format == ist->hwaccel_pix_fmt) {
1985  err = ist->hwaccel_retrieve_data(ist->dec_ctx, decoded_frame);
1986  if (err < 0)
1987  goto fail;
1988  }
1989  ist->hwaccel_retrieved_pix_fmt = decoded_frame->format;
1990 
1991  best_effort_timestamp= av_frame_get_best_effort_timestamp(decoded_frame);
1992  if(best_effort_timestamp != AV_NOPTS_VALUE)
1993  ist->next_pts = ist->pts = av_rescale_q(decoded_frame->pts = best_effort_timestamp, ist->st->time_base, AV_TIME_BASE_Q);
1994 
1995  if (debug_ts) {
1996  av_log(NULL, AV_LOG_INFO, "decoder -> ist_index:%d type:video "
1997  "frame_pts:%s frame_pts_time:%s best_effort_ts:%"PRId64" best_effort_ts_time:%s keyframe:%d frame_type:%d time_base:%d/%d\n",
1998  ist->st->index, av_ts2str(decoded_frame->pts),
1999  av_ts2timestr(decoded_frame->pts, &ist->st->time_base),
2000  best_effort_timestamp,
2001  av_ts2timestr(best_effort_timestamp, &ist->st->time_base),
2002  decoded_frame->key_frame, decoded_frame->pict_type,
2003  ist->st->time_base.num, ist->st->time_base.den);
2004  }
2005 
2006  pkt->size = 0;
2007 
2008  if (ist->st->sample_aspect_ratio.num)
2009  decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
2010 
2011  resample_changed = ist->resample_width != decoded_frame->width ||
2012  ist->resample_height != decoded_frame->height ||
2013  ist->resample_pix_fmt != decoded_frame->format;
2014  if (resample_changed) {
2015  av_log(NULL, AV_LOG_INFO,
2016  "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
2017  ist->file_index, ist->st->index,
2019  decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
2020 
2021  ist->resample_width = decoded_frame->width;
2022  ist->resample_height = decoded_frame->height;
2023  ist->resample_pix_fmt = decoded_frame->format;
2024 
2025  for (i = 0; i < nb_filtergraphs; i++) {
2026  if (ist_in_filtergraph(filtergraphs[i], ist) && ist->reinit_filters &&
2027  configure_filtergraph(filtergraphs[i]) < 0) {
2028  av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
2029  exit_program(1);
2030  }
2031  }
2032  }
2033 
2034  frame_sample_aspect= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "sample_aspect_ratio");
2035  for (i = 0; i < ist->nb_filters; i++) {
2036  if (!frame_sample_aspect->num)
2037  *frame_sample_aspect = ist->st->sample_aspect_ratio;
2038 
2039  if (i < ist->nb_filters - 1) {
2040  f = ist->filter_frame;
2041  err = av_frame_ref(f, decoded_frame);
2042  if (err < 0)
2043  break;
2044  } else
2045  f = decoded_frame;
2047  if (ret == AVERROR_EOF) {
2048  ret = 0; /* ignore */
2049  } else if (ret < 0) {
2050  av_log(NULL, AV_LOG_FATAL,
2051  "Failed to inject frame into filter network: %s\n", av_err2str(ret));
2052  exit_program(1);
2053  }
2054  }
2055 
2056 fail:
2058  av_frame_unref(decoded_frame);
2059  return err < 0 ? err : ret;
2060 }
2061 
2062 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
2063 {
2064  AVSubtitle subtitle;
2065  int i, ret = avcodec_decode_subtitle2(ist->dec_ctx,
2066  &subtitle, got_output, pkt);
2067 
2068  if (*got_output || ret<0 || pkt->size)
2069  decode_error_stat[ret<0] ++;
2070 
2071  if (ret < 0 || !*got_output) {
2072  if (!pkt->size)
2073  sub2video_flush(ist);
2074  return ret;
2075  }
2076 
2077  if (ist->fix_sub_duration) {
2078  int end = 1;
2079  if (ist->prev_sub.got_output) {
2080  end = av_rescale(subtitle.pts - ist->prev_sub.subtitle.pts,
2081  1000, AV_TIME_BASE);
2082  if (end < ist->prev_sub.subtitle.end_display_time) {
2083  av_log(ist->dec_ctx, AV_LOG_DEBUG,
2084  "Subtitle duration reduced from %d to %d%s\n",
2086  end <= 0 ? ", dropping it" : "");
2088  }
2089  }
2090  FFSWAP(int, *got_output, ist->prev_sub.got_output);
2091  FFSWAP(int, ret, ist->prev_sub.ret);
2092  FFSWAP(AVSubtitle, subtitle, ist->prev_sub.subtitle);
2093  if (end <= 0)
2094  goto out;
2095  }
2096 
2097  if (!*got_output)
2098  return ret;
2099 
2100  sub2video_update(ist, &subtitle);
2101 
2102  if (!subtitle.num_rects)
2103  goto out;
2104 
2105  ist->frames_decoded++;
2106 
2107  for (i = 0; i < nb_output_streams; i++) {
2108  OutputStream *ost = output_streams[i];
2109 
2110  if (!check_output_constraints(ist, ost) || !ost->encoding_needed
2111  || ost->enc->type != AVMEDIA_TYPE_SUBTITLE)
2112  continue;
2113 
2114  do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle);
2115  }
2116 
2117 out:
2118  avsubtitle_free(&subtitle);
2119  return ret;
2120 }
2121 
2122 /* pkt = NULL means EOF (needed to flush decoder buffers) */
2124 {
2125  int ret = 0, i;
2126  int got_output = 0;
2127 
2128  AVPacket avpkt;
2129  if (!ist->saw_first_ts) {
2130  ist->dts = ist->st->avg_frame_rate.num ? - ist->dec_ctx->has_b_frames * AV_TIME_BASE / av_q2d(ist->st->avg_frame_rate) : 0;
2131  ist->pts = 0;
2132  if (pkt && pkt->pts != AV_NOPTS_VALUE && !ist->decoding_needed) {
2133  ist->dts += av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
2134  ist->pts = ist->dts; //unused but better to set it to a value thats not totally wrong
2135  }
2136  ist->saw_first_ts = 1;
2137  }
2138 
2139  if (ist->next_dts == AV_NOPTS_VALUE)
2140  ist->next_dts = ist->dts;
2141  if (ist->next_pts == AV_NOPTS_VALUE)
2142  ist->next_pts = ist->pts;
2143 
2144  if (!pkt) {
2145  /* EOF handling */
2146  av_init_packet(&avpkt);
2147  avpkt.data = NULL;
2148  avpkt.size = 0;
2149  goto handle_eof;
2150  } else {
2151  avpkt = *pkt;
2152  }
2153 
2154  if (pkt->dts != AV_NOPTS_VALUE) {
2155  ist->next_dts = ist->dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
2156  if (ist->dec_ctx->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
2157  ist->next_pts = ist->pts = ist->dts;
2158  }
2159 
2160  // while we have more to decode or while the decoder did output something on EOF
2161  while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
2162  int duration;
2163  handle_eof:
2164 
2165  ist->pts = ist->next_pts;
2166  ist->dts = ist->next_dts;
2167 
2168  if (avpkt.size && avpkt.size != pkt->size &&
2169  !(ist->dec->capabilities & CODEC_CAP_SUBFRAMES)) {
2171  "Multiple frames in a packet from stream %d\n", pkt->stream_index);
2172  ist->showed_multi_packet_warning = 1;
2173  }
2174 
2175  switch (ist->dec_ctx->codec_type) {
2176  case AVMEDIA_TYPE_AUDIO:
2177  ret = decode_audio (ist, &avpkt, &got_output);
2178  break;
2179  case AVMEDIA_TYPE_VIDEO:
2180  ret = decode_video (ist, &avpkt, &got_output);
2181  if (avpkt.duration) {
2182  duration = av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
2183  } else if(ist->dec_ctx->framerate.num != 0 && ist->dec_ctx->framerate.den != 0) {
2185  duration = ((int64_t)AV_TIME_BASE *
2186  ist->dec_ctx->framerate.den * ticks) /
2188  } else
2189  duration = 0;
2190 
2191  if(ist->dts != AV_NOPTS_VALUE && duration) {
2192  ist->next_dts += duration;
2193  }else
2194  ist->next_dts = AV_NOPTS_VALUE;
2195 
2196  if (got_output)
2197  ist->next_pts += duration; //FIXME the duration is not correct in some cases
2198  break;
2199  case AVMEDIA_TYPE_SUBTITLE:
2200  ret = transcode_subtitles(ist, &avpkt, &got_output);
2201  break;
2202  default:
2203  return -1;
2204  }
2205 
2206  if (ret < 0)
2207  return ret;
2208 
2209  avpkt.dts=
2210  avpkt.pts= AV_NOPTS_VALUE;
2211 
2212  // touch data and size only if not EOF
2213  if (pkt) {
2215  ret = avpkt.size;
2216  avpkt.data += ret;
2217  avpkt.size -= ret;
2218  }
2219  if (!got_output) {
2220  continue;
2221  }
2222  if (got_output && !pkt)
2223  break;
2224  }
2225 
2226  /* handle stream copy */
2227  if (!ist->decoding_needed) {
2228  ist->dts = ist->next_dts;
2229  switch (ist->dec_ctx->codec_type) {
2230  case AVMEDIA_TYPE_AUDIO:
2231  ist->next_dts += ((int64_t)AV_TIME_BASE * ist->dec_ctx->frame_size) /
2232  ist->dec_ctx->sample_rate;
2233  break;
2234  case AVMEDIA_TYPE_VIDEO:
2235  if (ist->framerate.num) {
2236  // TODO: Remove work-around for c99-to-c89 issue 7
2237  AVRational time_base_q = AV_TIME_BASE_Q;
2238  int64_t next_dts = av_rescale_q(ist->next_dts, time_base_q, av_inv_q(ist->framerate));
2239  ist->next_dts = av_rescale_q(next_dts + 1, av_inv_q(ist->framerate), time_base_q);
2240  } else if (pkt->duration) {
2241  ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
2242  } else if(ist->dec_ctx->framerate.num != 0) {
2243  int ticks= av_stream_get_parser(ist->st) ? av_stream_get_parser(ist->st)->repeat_pict + 1 : ist->dec_ctx->ticks_per_frame;
2244  ist->next_dts += ((int64_t)AV_TIME_BASE *
2245  ist->dec_ctx->framerate.den * ticks) /
2247  }
2248  break;
2249  }
2250  ist->pts = ist->dts;
2251  ist->next_pts = ist->next_dts;
2252  }
2253  for (i = 0; pkt && i < nb_output_streams; i++) {
2254  OutputStream *ost = output_streams[i];
2255 
2256  if (!check_output_constraints(ist, ost) || ost->encoding_needed)
2257  continue;
2258 
2259  do_streamcopy(ist, ost, pkt);
2260  }
2261 
2262  return got_output;
2263 }
2264 
2265 static void print_sdp(void)
2266 {
2267  char sdp[16384];
2268  int i;
2269  AVFormatContext **avc = av_malloc_array(nb_output_files, sizeof(*avc));
2270 
2271  if (!avc)
2272  exit_program(1);
2273  for (i = 0; i < nb_output_files; i++)
2274  avc[i] = output_files[i]->ctx;
2275 
2276  av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
2277  printf("SDP:\n%s\n", sdp);
2278  fflush(stdout);
2279  av_freep(&avc);
2280 }
2281 
2283 {
2284  int i;
2285  for (i = 0; hwaccels[i].name; i++)
2286  if (hwaccels[i].pix_fmt == pix_fmt)
2287  return &hwaccels[i];
2288  return NULL;
2289 }
2290 
2291 static enum AVPixelFormat get_format(AVCodecContext *s, const enum AVPixelFormat *pix_fmts)
2292 {
2293  InputStream *ist = s->opaque;
2294  const enum AVPixelFormat *p;
2295  int ret;
2296 
2297  for (p = pix_fmts; *p != -1; p++) {
2298  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(*p);
2299  const HWAccel *hwaccel;
2300 
2301  if (!(desc->flags & AV_PIX_FMT_FLAG_HWACCEL))
2302  break;
2303 
2304  hwaccel = get_hwaccel(*p);
2305  if (!hwaccel ||
2306  (ist->active_hwaccel_id && ist->active_hwaccel_id != hwaccel->id) ||
2307  (ist->hwaccel_id != HWACCEL_AUTO && ist->hwaccel_id != hwaccel->id))
2308  continue;
2309 
2310  ret = hwaccel->init(s);
2311  if (ret < 0) {
2312  if (ist->hwaccel_id == hwaccel->id) {
2313  av_log(NULL, AV_LOG_FATAL,
2314  "%s hwaccel requested for input stream #%d:%d, "
2315  "but cannot be initialized.\n", hwaccel->name,
2316  ist->file_index, ist->st->index);
2317  exit_program(1);
2318  }
2319  continue;
2320  }
2321  ist->active_hwaccel_id = hwaccel->id;
2322  ist->hwaccel_pix_fmt = *p;
2323  break;
2324  }
2325 
2326  return *p;
2327 }
2328 
2330 {
2331  InputStream *ist = s->opaque;
2332 
2333  if (ist->hwaccel_get_buffer && frame->format == ist->hwaccel_pix_fmt)
2334  return ist->hwaccel_get_buffer(s, frame, flags);
2335 
2336  return avcodec_default_get_buffer2(s, frame, flags);
2337 }
2338 
2339 static int init_input_stream(int ist_index, char *error, int error_len)
2340 {
2341  int ret;
2342  InputStream *ist = input_streams[ist_index];
2343 
2344  if (ist->decoding_needed) {
2345  AVCodec *codec = ist->dec;
2346  if (!codec) {
2347  snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
2348  avcodec_get_name(ist->dec_ctx->codec_id), ist->file_index, ist->st->index);
2349  return AVERROR(EINVAL);
2350  }
2351 
2352  ist->dec_ctx->opaque = ist;
2353  ist->dec_ctx->get_format = get_format;
2354  ist->dec_ctx->get_buffer2 = get_buffer;
2355  ist->dec_ctx->thread_safe_callbacks = 1;
2356 
2357  av_opt_set_int(ist->dec_ctx, "refcounted_frames", 1, 0);
2358  if (ist->dec_ctx->codec_id == AV_CODEC_ID_DVB_SUBTITLE &&
2359  (ist->decoding_needed & DECODING_FOR_OST)) {
2360  av_dict_set(&ist->decoder_opts, "compute_edt", "1", AV_DICT_DONT_OVERWRITE);
2362  av_log(NULL, AV_LOG_WARNING, "Warning using DVB subtitles for filtering and output at the same time is not fully supported, also see -compute_edt [0|1]\n");
2363  }
2364 
2365  if (!av_dict_get(ist->decoder_opts, "threads", NULL, 0))
2366  av_dict_set(&ist->decoder_opts, "threads", "auto", 0);
2367  if ((ret = avcodec_open2(ist->dec_ctx, codec, &ist->decoder_opts)) < 0) {
2368  if (ret == AVERROR_EXPERIMENTAL)
2369  abort_codec_experimental(codec, 0);
2370 
2371  snprintf(error, error_len,
2372  "Error while opening decoder for input stream "
2373  "#%d:%d : %s",
2374  ist->file_index, ist->st->index, av_err2str(ret));
2375  return ret;
2376  }
2378  }
2379 
2380  ist->next_pts = AV_NOPTS_VALUE;
2381  ist->next_dts = AV_NOPTS_VALUE;
2382 
2383  return 0;
2384 }
2385 
2387 {
2388  if (ost->source_index >= 0)
2389  return input_streams[ost->source_index];
2390  return NULL;
2391 }
2392 
2393 static int compare_int64(const void *a, const void *b)
2394 {
2395  int64_t va = *(int64_t *)a, vb = *(int64_t *)b;
2396  return va < vb ? -1 : va > vb ? +1 : 0;
2397 }
2398 
2399 static void parse_forced_key_frames(char *kf, OutputStream *ost,
2400  AVCodecContext *avctx)
2401 {
2402  char *p;
2403  int n = 1, i, size, index = 0;
2404  int64_t t, *pts;
2405 
2406  for (p = kf; *p; p++)
2407  if (*p == ',')
2408  n++;
2409  size = n;
2410  pts = av_malloc_array(size, sizeof(*pts));
2411  if (!pts) {
2412  av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
2413  exit_program(1);
2414  }
2415 
2416  p = kf;
2417  for (i = 0; i < n; i++) {
2418  char *next = strchr(p, ',');
2419 
2420  if (next)
2421  *next++ = 0;
2422 
2423  if (!memcmp(p, "chapters", 8)) {
2424 
2425  AVFormatContext *avf = output_files[ost->file_index]->ctx;
2426  int j;
2427 
2428  if (avf->nb_chapters > INT_MAX - size ||
2429  !(pts = av_realloc_f(pts, size += avf->nb_chapters - 1,
2430  sizeof(*pts)))) {
2431  av_log(NULL, AV_LOG_FATAL,
2432  "Could not allocate forced key frames array.\n");
2433  exit_program(1);
2434  }
2435  t = p[8] ? parse_time_or_die("force_key_frames", p + 8, 1) : 0;
2436  t = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
2437 
2438  for (j = 0; j < avf->nb_chapters; j++) {
2439  AVChapter *c = avf->chapters[j];
2440  av_assert1(index < size);
2441  pts[index++] = av_rescale_q(c->start, c->time_base,
2442  avctx->time_base) + t;
2443  }
2444 
2445  } else {
2446 
2447  t = parse_time_or_die("force_key_frames", p, 1);
2448  av_assert1(index < size);
2449  pts[index++] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
2450 
2451  }
2452 
2453  p = next;
2454  }
2455 
2456  av_assert0(index == size);
2457  qsort(pts, size, sizeof(*pts), compare_int64);
2458  ost->forced_kf_count = size;
2459  ost->forced_kf_pts = pts;
2460 }
2461 
2462 static void report_new_stream(int input_index, AVPacket *pkt)
2463 {
2464  InputFile *file = input_files[input_index];
2465  AVStream *st = file->ctx->streams[pkt->stream_index];
2466 
2467  if (pkt->stream_index < file->nb_streams_warn)
2468  return;
2469  av_log(file->ctx, AV_LOG_WARNING,
2470  "New %s stream %d:%d at pos:%"PRId64" and DTS:%ss\n",
2472  input_index, pkt->stream_index,
2473  pkt->pos, av_ts2timestr(pkt->dts, &st->time_base));
2474  file->nb_streams_warn = pkt->stream_index + 1;
2475 }
2476 
2478 {
2479  AVDictionaryEntry *e;
2480 
2481  uint8_t *encoder_string;
2482  int encoder_string_len;
2483  int format_flags = 0;
2484  int codec_flags = 0;
2485 
2486  if (av_dict_get(ost->st->metadata, "encoder", NULL, 0))
2487  return;
2488 
2489  e = av_dict_get(of->opts, "fflags", NULL, 0);
2490  if (e) {
2491  const AVOption *o = av_opt_find(of->ctx, "fflags", NULL, 0, 0);
2492  if (!o)
2493  return;
2494  av_opt_eval_flags(of->ctx, o, e->value, &format_flags);
2495  }
2496  e = av_dict_get(ost->encoder_opts, "flags", NULL, 0);
2497  if (e) {
2498  const AVOption *o = av_opt_find(ost->enc_ctx, "flags", NULL, 0, 0);
2499  if (!o)
2500  return;
2501  av_opt_eval_flags(ost->enc_ctx, o, e->value, &codec_flags);
2502  }
2503 
2504  encoder_string_len = sizeof(LIBAVCODEC_IDENT) + strlen(ost->enc->name) + 2;
2505  encoder_string = av_mallocz(encoder_string_len);
2506  if (!encoder_string)
2507  exit_program(1);
2508 
2509  if (!(format_flags & AVFMT_FLAG_BITEXACT) && !(codec_flags & CODEC_FLAG_BITEXACT))
2510  av_strlcpy(encoder_string, LIBAVCODEC_IDENT " ", encoder_string_len);
2511  else
2512  av_strlcpy(encoder_string, "Lavc ", encoder_string_len);
2513  av_strlcat(encoder_string, ost->enc->name, encoder_string_len);
2514  av_dict_set(&ost->st->metadata, "encoder", encoder_string,
2516 }
2517 
2518 static int transcode_init(void)
2519 {
2520  int ret = 0, i, j, k;
2521  AVFormatContext *oc;
2522  OutputStream *ost;
2523  InputStream *ist;
2524  char error[1024];
2525  int want_sdp = 1;
2526 
2527  for (i = 0; i < nb_filtergraphs; i++) {
2528  FilterGraph *fg = filtergraphs[i];
2529  for (j = 0; j < fg->nb_outputs; j++) {
2530  OutputFilter *ofilter = fg->outputs[j];
2531  if (!ofilter->ost || ofilter->ost->source_index >= 0)
2532  continue;
2533  if (fg->nb_inputs != 1)
2534  continue;
2535  for (k = nb_input_streams-1; k >= 0 ; k--)
2536  if (fg->inputs[0]->ist == input_streams[k])
2537  break;
2538  ofilter->ost->source_index = k;
2539  }
2540  }
2541 
2542  /* init framerate emulation */
2543  for (i = 0; i < nb_input_files; i++) {
2544  InputFile *ifile = input_files[i];
2545  if (ifile->rate_emu)
2546  for (j = 0; j < ifile->nb_streams; j++)
2547  input_streams[j + ifile->ist_index]->start = av_gettime_relative();
2548  }
2549 
2550  /* output stream init */
2551  for (i = 0; i < nb_output_files; i++) {
2552  oc = output_files[i]->ctx;
2553  if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
2554  av_dump_format(oc, i, oc->filename, 1);
2555  av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2556  return AVERROR(EINVAL);
2557  }
2558  }
2559 
2560  /* init complex filtergraphs */
2561  for (i = 0; i < nb_filtergraphs; i++)
2562  if ((ret = avfilter_graph_config(filtergraphs[i]->graph, NULL)) < 0)
2563  return ret;
2564 
2565  /* for each output stream, we compute the right encoding parameters */
2566  for (i = 0; i < nb_output_streams; i++) {
2567  AVCodecContext *enc_ctx;
2568  AVCodecContext *dec_ctx = NULL;
2569  ost = output_streams[i];
2570  oc = output_files[ost->file_index]->ctx;
2571  ist = get_input_stream(ost);
2572 
2573  if (ost->attachment_filename)
2574  continue;
2575 
2576  enc_ctx = ost->enc_ctx;
2577 
2578  if (ist) {
2579  dec_ctx = ist->dec_ctx;
2580 
2581  ost->st->disposition = ist->st->disposition;
2582  enc_ctx->bits_per_raw_sample = dec_ctx->bits_per_raw_sample;
2583  enc_ctx->chroma_sample_location = dec_ctx->chroma_sample_location;
2584  } else {
2585  for (j=0; j<oc->nb_streams; j++) {
2586  AVStream *st = oc->streams[j];
2587  if (st != ost->st && st->codec->codec_type == enc_ctx->codec_type)
2588  break;
2589  }
2590  if (j == oc->nb_streams)
2591  if (enc_ctx->codec_type == AVMEDIA_TYPE_AUDIO || enc_ctx->codec_type == AVMEDIA_TYPE_VIDEO)
2593  }
2594 
2595  if (ost->stream_copy) {
2596  AVRational sar;
2597  uint64_t extra_size;
2598 
2599  av_assert0(ist && !ost->filter);
2600 
2601  extra_size = (uint64_t)dec_ctx->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2602 
2603  if (extra_size > INT_MAX) {
2604  return AVERROR(EINVAL);
2605  }
2606 
2607  /* if stream_copy is selected, no need to decode or encode */
2608  enc_ctx->codec_id = dec_ctx->codec_id;
2609  enc_ctx->codec_type = dec_ctx->codec_type;
2610 
2611  if (!enc_ctx->codec_tag) {
2612  unsigned int codec_tag;
2613  if (!oc->oformat->codec_tag ||
2614  av_codec_get_id (oc->oformat->codec_tag, dec_ctx->codec_tag) == enc_ctx->codec_id ||
2615  !av_codec_get_tag2(oc->oformat->codec_tag, dec_ctx->codec_id, &codec_tag))
2616  enc_ctx->codec_tag = dec_ctx->codec_tag;
2617  }
2618 
2619  enc_ctx->bit_rate = dec_ctx->bit_rate;
2620  enc_ctx->rc_max_rate = dec_ctx->rc_max_rate;
2621  enc_ctx->rc_buffer_size = dec_ctx->rc_buffer_size;
2622  enc_ctx->field_order = dec_ctx->field_order;
2623  enc_ctx->extradata = av_mallocz(extra_size);
2624  if (!enc_ctx->extradata) {
2625  return AVERROR(ENOMEM);
2626  }
2627  memcpy(enc_ctx->extradata, dec_ctx->extradata, dec_ctx->extradata_size);
2628  enc_ctx->extradata_size= dec_ctx->extradata_size;
2629  enc_ctx->bits_per_coded_sample = dec_ctx->bits_per_coded_sample;
2630 
2631  enc_ctx->time_base = ist->st->time_base;
2632  /*
2633  * Avi is a special case here because it supports variable fps but
2634  * having the fps and timebase differe significantly adds quite some
2635  * overhead
2636  */
2637  if(!strcmp(oc->oformat->name, "avi")) {
2638  if ( copy_tb<0 && av_q2d(ist->st->r_frame_rate) >= av_q2d(ist->st->avg_frame_rate)
2639  && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(ist->st->time_base)
2640  && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(dec_ctx->time_base)
2641  && av_q2d(ist->st->time_base) < 1.0/500 && av_q2d(dec_ctx->time_base) < 1.0/500
2642  || copy_tb==2){
2643  enc_ctx->time_base.num = ist->st->r_frame_rate.den;
2644  enc_ctx->time_base.den = 2*ist->st->r_frame_rate.num;
2645  enc_ctx->ticks_per_frame = 2;
2646  } else if ( copy_tb<0 && av_q2d(dec_ctx->time_base)*dec_ctx->ticks_per_frame > 2*av_q2d(ist->st->time_base)
2647  && av_q2d(ist->st->time_base) < 1.0/500
2648  || copy_tb==0){
2649  enc_ctx->time_base = dec_ctx->time_base;
2650  enc_ctx->time_base.num *= dec_ctx->ticks_per_frame;
2651  enc_ctx->time_base.den *= 2;
2652  enc_ctx->ticks_per_frame = 2;
2653  }
2654  } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)
2655  && strcmp(oc->oformat->name, "mov") && strcmp(oc->oformat->name, "mp4") && strcmp(oc->oformat->name, "3gp")
2656  && strcmp(oc->oformat->name, "3g2") && strcmp(oc->oformat->name, "psp") && strcmp(oc->oformat->name, "ipod")
2657  && strcmp(oc->oformat->name, "f4v")
2658  ) {
2659  if( copy_tb<0 && dec_ctx->time_base.den
2660  && av_q2d(dec_ctx->time_base)*dec_ctx->ticks_per_frame > av_q2d(ist->st->time_base)
2661  && av_q2d(ist->st->time_base) < 1.0/500
2662  || copy_tb==0){
2663  enc_ctx->time_base = dec_ctx->time_base;
2664  enc_ctx->time_base.num *= dec_ctx->ticks_per_frame;
2665  }
2666  }
2667  if ( enc_ctx->codec_tag == AV_RL32("tmcd")
2668  && dec_ctx->time_base.num < dec_ctx->time_base.den
2669  && dec_ctx->time_base.num > 0
2670  && 121LL*dec_ctx->time_base.num > dec_ctx->time_base.den) {
2671  enc_ctx->time_base = dec_ctx->time_base;
2672  }
2673 
2674  if (ist && !ost->frame_rate.num)
2675  ost->frame_rate = ist->framerate;
2676  if(ost->frame_rate.num)
2677  enc_ctx->time_base = av_inv_q(ost->frame_rate);
2678 
2679  av_reduce(&enc_ctx->time_base.num, &enc_ctx->time_base.den,
2680  enc_ctx->time_base.num, enc_ctx->time_base.den, INT_MAX);
2681 
2682  if (ist->st->nb_side_data) {
2683  ost->st->side_data = av_realloc_array(NULL, ist->st->nb_side_data,
2684  sizeof(*ist->st->side_data));
2685  if (!ost->st->side_data)
2686  return AVERROR(ENOMEM);
2687 
2688  for (j = 0; j < ist->st->nb_side_data; j++) {
2689  const AVPacketSideData *sd_src = &ist->st->side_data[j];
2690  AVPacketSideData *sd_dst = &ost->st->side_data[j];
2691 
2692  sd_dst->data = av_malloc(sd_src->size);
2693  if (!sd_dst->data)
2694  return AVERROR(ENOMEM);
2695  memcpy(sd_dst->data, sd_src->data, sd_src->size);
2696  sd_dst->size = sd_src->size;
2697  sd_dst->type = sd_src->type;
2698  ost->st->nb_side_data++;
2699  }
2700  }
2701 
2702  ost->parser = av_parser_init(enc_ctx->codec_id);
2703 
2704  switch (enc_ctx->codec_type) {
2705  case AVMEDIA_TYPE_AUDIO:
2706  if (audio_volume != 256) {
2707  av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2708  exit_program(1);
2709  }
2710  enc_ctx->channel_layout = dec_ctx->channel_layout;
2711  enc_ctx->sample_rate = dec_ctx->sample_rate;
2712  enc_ctx->channels = dec_ctx->channels;
2713  enc_ctx->frame_size = dec_ctx->frame_size;
2714  enc_ctx->audio_service_type = dec_ctx->audio_service_type;
2715  enc_ctx->block_align = dec_ctx->block_align;
2716  enc_ctx->initial_padding = dec_ctx->delay;
2717 #if FF_API_AUDIOENC_DELAY
2718  enc_ctx->delay = dec_ctx->delay;
2719 #endif
2720  if((enc_ctx->block_align == 1 || enc_ctx->block_align == 1152 || enc_ctx->block_align == 576) && enc_ctx->codec_id == AV_CODEC_ID_MP3)
2721  enc_ctx->block_align= 0;
2722  if(enc_ctx->codec_id == AV_CODEC_ID_AC3)
2723  enc_ctx->block_align= 0;
2724  break;
2725  case AVMEDIA_TYPE_VIDEO:
2726  enc_ctx->pix_fmt = dec_ctx->pix_fmt;
2727  enc_ctx->width = dec_ctx->width;
2728  enc_ctx->height = dec_ctx->height;
2729  enc_ctx->has_b_frames = dec_ctx->has_b_frames;
2730  if (ost->frame_aspect_ratio.num) { // overridden by the -aspect cli option
2731  sar =
2733  (AVRational){ enc_ctx->height, enc_ctx->width });
2734  av_log(NULL, AV_LOG_WARNING, "Overriding aspect ratio "
2735  "with stream copy may produce invalid files\n");
2736  }
2737  else if (ist->st->sample_aspect_ratio.num)
2738  sar = ist->st->sample_aspect_ratio;
2739  else
2740  sar = dec_ctx->sample_aspect_ratio;
2741  ost->st->sample_aspect_ratio = enc_ctx->sample_aspect_ratio = sar;
2742  ost->st->avg_frame_rate = ist->st->avg_frame_rate;
2743  break;
2744  case AVMEDIA_TYPE_SUBTITLE:
2745  enc_ctx->width = dec_ctx->width;
2746  enc_ctx->height = dec_ctx->height;
2747  break;
2748  case AVMEDIA_TYPE_DATA:
2750  break;
2751  default:
2752  abort();
2753  }
2754  } else {
2755  if (!ost->enc)
2756  ost->enc = avcodec_find_encoder(enc_ctx->codec_id);
2757  if (!ost->enc) {
2758  /* should only happen when a default codec is not present. */
2759  snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
2760  avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
2761  ret = AVERROR(EINVAL);
2762  goto dump_format;
2763  }
2764 
2765  if (ist)
2767  ost->encoding_needed = 1;
2768 
2769  set_encoder_id(output_files[ost->file_index], ost);
2770 
2771  if (!ost->filter &&
2772  (enc_ctx->codec_type == AVMEDIA_TYPE_VIDEO ||
2773  enc_ctx->codec_type == AVMEDIA_TYPE_AUDIO)) {
2774  FilterGraph *fg;
2775  fg = init_simple_filtergraph(ist, ost);
2776  if (configure_filtergraph(fg)) {
2777  av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2778  exit_program(1);
2779  }
2780  }
2781 
2782  if (enc_ctx->codec_type == AVMEDIA_TYPE_VIDEO) {
2783  if (ost->filter && !ost->frame_rate.num)
2785  if (ist && !ost->frame_rate.num)
2786  ost->frame_rate = ist->framerate;
2787  if (ist && !ost->frame_rate.num)
2788  ost->frame_rate = ist->st->r_frame_rate;
2789  if (ist && !ost->frame_rate.num) {
2790  ost->frame_rate = (AVRational){25, 1};
2791  av_log(NULL, AV_LOG_WARNING,
2792  "No information "
2793  "about the input framerate is available. Falling "
2794  "back to a default value of 25fps for output stream #%d:%d. Use the -r option "
2795  "if you want a different framerate.\n",
2796  ost->file_index, ost->index);
2797  }
2798 // ost->frame_rate = ist->st->avg_frame_rate.num ? ist->st->avg_frame_rate : (AVRational){25, 1};
2799  if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2801  ost->frame_rate = ost->enc->supported_framerates[idx];
2802  }
2803  if (enc_ctx->codec_id == AV_CODEC_ID_MPEG4) {
2804  av_reduce(&ost->frame_rate.num, &ost->frame_rate.den,
2805  ost->frame_rate.num, ost->frame_rate.den, 65535);
2806  }
2807  }
2808 
2809  switch (enc_ctx->codec_type) {
2810  case AVMEDIA_TYPE_AUDIO:
2811  enc_ctx->sample_fmt = ost->filter->filter->inputs[0]->format;
2812  enc_ctx->sample_rate = ost->filter->filter->inputs[0]->sample_rate;
2813  enc_ctx->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
2814  enc_ctx->channels = avfilter_link_get_channels(ost->filter->filter->inputs[0]);
2815  enc_ctx->time_base = (AVRational){ 1, enc_ctx->sample_rate };
2816  break;
2817  case AVMEDIA_TYPE_VIDEO:
2818  enc_ctx->time_base = av_inv_q(ost->frame_rate);
2819  if (ost->filter && !(enc_ctx->time_base.num && enc_ctx->time_base.den))
2820  enc_ctx->time_base = ost->filter->filter->inputs[0]->time_base;
2821  if ( av_q2d(enc_ctx->time_base) < 0.001 && video_sync_method != VSYNC_PASSTHROUGH
2823  av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not efficiently supporting it.\n"
2824  "Please consider specifying a lower framerate, a different muxer or -vsync 2\n");
2825  }
2826  for (j = 0; j < ost->forced_kf_count; j++)
2827  ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
2829  enc_ctx->time_base);
2830 
2831  enc_ctx->width = ost->filter->filter->inputs[0]->w;
2832  enc_ctx->height = ost->filter->filter->inputs[0]->h;
2833  enc_ctx->sample_aspect_ratio = ost->st->sample_aspect_ratio =
2834  ost->frame_aspect_ratio.num ? // overridden by the -aspect cli option
2835  av_mul_q(ost->frame_aspect_ratio, (AVRational){ enc_ctx->height, enc_ctx->width }) :
2837  if (!strncmp(ost->enc->name, "libx264", 7) &&
2838  enc_ctx->pix_fmt == AV_PIX_FMT_NONE &&
2840  av_log(NULL, AV_LOG_WARNING,
2841  "No pixel format specified, %s for H.264 encoding chosen.\n"
2842  "Use -pix_fmt yuv420p for compatibility with outdated media players.\n",
2844  if (!strncmp(ost->enc->name, "mpeg2video", 10) &&
2845  enc_ctx->pix_fmt == AV_PIX_FMT_NONE &&
2847  av_log(NULL, AV_LOG_WARNING,
2848  "No pixel format specified, %s for MPEG-2 encoding chosen.\n"
2849  "Use -pix_fmt yuv420p for compatibility with outdated media players.\n",
2851  enc_ctx->pix_fmt = ost->filter->filter->inputs[0]->format;
2852 
2853  ost->st->avg_frame_rate = ost->frame_rate;
2854 
2855  if (!dec_ctx ||
2856  enc_ctx->width != dec_ctx->width ||
2857  enc_ctx->height != dec_ctx->height ||
2858  enc_ctx->pix_fmt != dec_ctx->pix_fmt) {
2859  enc_ctx->bits_per_raw_sample = frame_bits_per_raw_sample;
2860  }
2861 
2862  if (ost->forced_keyframes) {
2863  if (!strncmp(ost->forced_keyframes, "expr:", 5)) {
2865  forced_keyframes_const_names, NULL, NULL, NULL, NULL, 0, NULL);
2866  if (ret < 0) {
2867  av_log(NULL, AV_LOG_ERROR,
2868  "Invalid force_key_frames expression '%s'\n", ost->forced_keyframes+5);
2869  return ret;
2870  }
2875  } else {
2877  }
2878  }
2879  break;
2880  case AVMEDIA_TYPE_SUBTITLE:
2881  enc_ctx->time_base = (AVRational){1, 1000};
2882  if (!enc_ctx->width) {
2883  enc_ctx->width = input_streams[ost->source_index]->st->codec->width;
2884  enc_ctx->height = input_streams[ost->source_index]->st->codec->height;
2885  }
2886  break;
2887  default:
2888  abort();
2889  break;
2890  }
2891  /* two pass mode */
2892  if (enc_ctx->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2)) {
2893  char logfilename[1024];
2894  FILE *f;
2895 
2896  snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2897  ost->logfile_prefix ? ost->logfile_prefix :
2899  i);
2900  if (!strcmp(ost->enc->name, "libx264")) {
2901  av_dict_set(&ost->encoder_opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
2902  } else {
2903  if (enc_ctx->flags & CODEC_FLAG_PASS2) {
2904  char *logbuffer;
2905  size_t logbuffer_size;
2906  if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2907  av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2908  logfilename);
2909  exit_program(1);
2910  }
2911  enc_ctx->stats_in = logbuffer;
2912  }
2913  if (enc_ctx->flags & CODEC_FLAG_PASS1) {
2914  f = av_fopen_utf8(logfilename, "wb");
2915  if (!f) {
2916  av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2917  logfilename, strerror(errno));
2918  exit_program(1);
2919  }
2920  ost->logfile = f;
2921  }
2922  }
2923  }
2924  }
2925  }
2926 
2927  /* open each encoder */
2928  for (i = 0; i < nb_output_streams; i++) {
2929  ost = output_streams[i];
2930  if (ost->encoding_needed) {
2931  AVCodec *codec = ost->enc;
2932  AVCodecContext *dec = NULL;
2933 
2934  if ((ist = get_input_stream(ost)))
2935  dec = ist->dec_ctx;
2936  if (dec && dec->subtitle_header) {
2937  /* ASS code assumes this buffer is null terminated so add extra byte. */
2938  ost->enc_ctx->subtitle_header = av_mallocz(dec->subtitle_header_size + 1);
2939  if (!ost->enc_ctx->subtitle_header) {
2940  ret = AVERROR(ENOMEM);
2941  goto dump_format;
2942  }
2943  memcpy(ost->enc_ctx->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2944  ost->enc_ctx->subtitle_header_size = dec->subtitle_header_size;
2945  }
2946  if (!av_dict_get(ost->encoder_opts, "threads", NULL, 0))
2947  av_dict_set(&ost->encoder_opts, "threads", "auto", 0);
2948  av_dict_set(&ost->encoder_opts, "side_data_only_packets", "1", 0);
2949 
2950  if ((ret = avcodec_open2(ost->enc_ctx, codec, &ost->encoder_opts)) < 0) {
2951  if (ret == AVERROR_EXPERIMENTAL)
2952  abort_codec_experimental(codec, 1);
2953  snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2954  ost->file_index, ost->index);
2955  goto dump_format;
2956  }
2957  if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
2958  !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
2959  av_buffersink_set_frame_size(ost->filter->filter,
2960  ost->enc_ctx->frame_size);
2961  assert_avoptions(ost->encoder_opts);
2962  if (ost->enc_ctx->bit_rate && ost->enc_ctx->bit_rate < 1000)
2963  av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2964  " It takes bits/s as argument, not kbits/s\n");
2965  } else {
2966  ret = av_opt_set_dict(ost->enc_ctx, &ost->encoder_opts);
2967  if (ret < 0) {
2968  av_log(NULL, AV_LOG_FATAL,
2969  "Error setting up codec context options.\n");
2970  return ret;
2971  }
2972  }
2973 
2974  ret = avcodec_copy_context(ost->st->codec, ost->enc_ctx);
2975  if (ret < 0) {
2976  av_log(NULL, AV_LOG_FATAL,
2977  "Error initializing the output stream codec context.\n");
2978  exit_program(1);
2979  }
2980  ost->st->codec->codec= ost->enc_ctx->codec;
2981 
2982  // copy timebase while removing common factors
2983  ost->st->time_base = av_add_q(ost->enc_ctx->time_base, (AVRational){0, 1});
2984  }
2985 
2986  /* init input streams */
2987  for (i = 0; i < nb_input_streams; i++)
2988  if ((ret = init_input_stream(i, error, sizeof(error))) < 0) {
2989  for (i = 0; i < nb_output_streams; i++) {
2990  ost = output_streams[i];
2991  avcodec_close(ost->enc_ctx);
2992  }
2993  goto dump_format;
2994  }
2995 
2996  /* discard unused programs */
2997  for (i = 0; i < nb_input_files; i++) {
2998  InputFile *ifile = input_files[i];
2999  for (j = 0; j < ifile->ctx->nb_programs; j++) {
3000  AVProgram *p = ifile->ctx->programs[j];
3001  int discard = AVDISCARD_ALL;
3002 
3003  for (k = 0; k < p->nb_stream_indexes; k++)
3004  if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
3005  discard = AVDISCARD_DEFAULT;
3006  break;
3007  }
3008  p->discard = discard;
3009  }
3010  }
3011 
3012  /* open files and write file headers */
3013  for (i = 0; i < nb_output_files; i++) {
3014  oc = output_files[i]->ctx;
3015  oc->interrupt_callback = int_cb;
3016  if ((ret = avformat_write_header(oc, &output_files[i]->opts)) < 0) {
3017  snprintf(error, sizeof(error),
3018  "Could not write header for output file #%d "
3019  "(incorrect codec parameters ?): %s",
3020  i, av_err2str(ret));
3021  ret = AVERROR(EINVAL);
3022  goto dump_format;
3023  }
3024 // assert_avoptions(output_files[i]->opts);
3025  if (strcmp(oc->oformat->name, "rtp")) {
3026  want_sdp = 0;
3027  }
3028  }
3029 
3030  dump_format:
3031  /* dump the file output parameters - cannot be done before in case
3032  of stream copy */
3033  for (i = 0; i < nb_output_files; i++) {
3034  av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
3035  }
3036 
3037  /* dump the stream mapping */
3038  av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
3039  for (i = 0; i < nb_input_streams; i++) {
3040  ist = input_streams[i];
3041 
3042  for (j = 0; j < ist->nb_filters; j++) {
3043  if (ist->filters[j]->graph->graph_desc) {
3044  av_log(NULL, AV_LOG_INFO, " Stream #%d:%d (%s) -> %s",
3045  ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
3046  ist->filters[j]->name);
3047  if (nb_filtergraphs > 1)
3048  av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
3049  av_log(NULL, AV_LOG_INFO, "\n");
3050  }
3051  }
3052  }
3053 
3054  for (i = 0; i < nb_output_streams; i++) {
3055  ost = output_streams[i];
3056 
3057  if (ost->attachment_filename) {
3058  /* an attached file */
3059  av_log(NULL, AV_LOG_INFO, " File %s -> Stream #%d:%d\n",
3060  ost->attachment_filename, ost->file_index, ost->index);
3061  continue;
3062  }
3063 
3064  if (ost->filter && ost->filter->graph->graph_desc) {
3065  /* output from a complex graph */
3066  av_log(NULL, AV_LOG_INFO, " %s", ost->filter->name);
3067  if (nb_filtergraphs > 1)
3068  av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
3069 
3070  av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
3071  ost->index, ost->enc ? ost->enc->name : "?");
3072  continue;
3073  }
3074 
3075  av_log(NULL, AV_LOG_INFO, " Stream #%d:%d -> #%d:%d",
3076  input_streams[ost->source_index]->file_index,
3077  input_streams[ost->source_index]->st->index,
3078  ost->file_index,
3079  ost->index);
3080  if (ost->sync_ist != input_streams[ost->source_index])
3081  av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
3082  ost->sync_ist->file_index,
3083  ost->sync_ist->st->index);
3084  if (ost->stream_copy)
3085  av_log(NULL, AV_LOG_INFO, " (copy)");
3086  else {
3087  const AVCodec *in_codec = input_streams[ost->source_index]->dec;
3088  const AVCodec *out_codec = ost->enc;
3089  const char *decoder_name = "?";
3090  const char *in_codec_name = "?";
3091  const char *encoder_name = "?";
3092  const char *out_codec_name = "?";
3093 
3094  if (in_codec) {
3095  decoder_name = in_codec->name;
3096  in_codec_name = avcodec_descriptor_get(in_codec->id)->name;
3097  if (!strcmp(decoder_name, in_codec_name))
3098  decoder_name = "native";
3099  }
3100 
3101  if (out_codec) {
3102  encoder_name = out_codec->name;
3103  out_codec_name = avcodec_descriptor_get(out_codec->id)->name;
3104  if (!strcmp(encoder_name, out_codec_name))
3105  encoder_name = "native";
3106  }
3107 
3108  av_log(NULL, AV_LOG_INFO, " (%s (%s) -> %s (%s))",
3109  in_codec_name, decoder_name,
3110  out_codec_name, encoder_name);
3111  }
3112  av_log(NULL, AV_LOG_INFO, "\n");
3113  }
3114 
3115  if (ret) {
3116  av_log(NULL, AV_LOG_ERROR, "%s\n", error);
3117  return ret;
3118  }
3119 
3120  if (want_sdp) {
3121  print_sdp();
3122  }
3123 
3124  transcode_init_done = 1;
3125 
3126  return 0;
3127 }
3128 
3129 /* Return 1 if there remain streams where more output is wanted, 0 otherwise. */
3130 static int need_output(void)
3131 {
3132  int i;
3133 
3134  for (i = 0; i < nb_output_streams; i++) {
3135  OutputStream *ost = output_streams[i];
3136  OutputFile *of = output_files[ost->file_index];
3137  AVFormatContext *os = output_files[ost->file_index]->ctx;
3138 
3139  if (ost->finished ||
3140  (os->pb && avio_tell(os->pb) >= of->limit_filesize))
3141  continue;
3142  if (ost->frame_number >= ost->max_frames) {
3143  int j;
3144  for (j = 0; j < of->ctx->nb_streams; j++)
3145  close_output_stream(output_streams[of->ost_index + j]);
3146  continue;
3147  }
3148 
3149  return 1;
3150  }
3151 
3152  return 0;
3153 }
3154 
3155 /**
3156  * Select the output stream to process.
3157  *
3158  * @return selected output stream, or NULL if none available
3159  */
3161 {
3162  int i;
3163  int64_t opts_min = INT64_MAX;
3164  OutputStream *ost_min = NULL;
3165 
3166  for (i = 0; i < nb_output_streams; i++) {
3167  OutputStream *ost = output_streams[i];
3168  int64_t opts = av_rescale_q(ost->st->cur_dts, ost->st->time_base,
3169  AV_TIME_BASE_Q);
3170  if (!ost->finished && opts < opts_min) {
3171  opts_min = opts;
3172  ost_min = ost->unavailable ? NULL : ost;
3173  }
3174  }
3175  return ost_min;
3176 }
3177 
3179 {
3180  int i, ret, key;
3181  static int64_t last_time;
3182  if (received_nb_signals)
3183  return AVERROR_EXIT;
3184  /* read_key() returns 0 on EOF */
3185  if(cur_time - last_time >= 100000 && !run_as_daemon){
3186  key = read_key();
3187  last_time = cur_time;
3188  }else
3189  key = -1;
3190  if (key == 'q')
3191  return AVERROR_EXIT;
3192  if (key == '+') av_log_set_level(av_log_get_level()+10);
3193  if (key == '-') av_log_set_level(av_log_get_level()-10);
3194  if (key == 's') qp_hist ^= 1;
3195  if (key == 'h'){
3196  if (do_hex_dump){
3197  do_hex_dump = do_pkt_dump = 0;
3198  } else if(do_pkt_dump){
3199  do_hex_dump = 1;
3200  } else
3201  do_pkt_dump = 1;
3203  }
3204  if (key == 'c' || key == 'C'){
3205  char buf[4096], target[64], command[256], arg[256] = {0};
3206  double time;
3207  int k, n = 0;
3208  fprintf(stderr, "\nEnter command: <target>|all <time>|-1 <command>[ <argument>]\n");
3209  i = 0;
3210  while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
3211  if (k > 0)
3212  buf[i++] = k;
3213  buf[i] = 0;
3214  if (k > 0 &&
3215  (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
3216  av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
3217  target, time, command, arg);
3218  for (i = 0; i < nb_filtergraphs; i++) {
3219  FilterGraph *fg = filtergraphs[i];
3220  if (fg->graph) {
3221  if (time < 0) {
3222  ret = avfilter_graph_send_command(fg->graph, target, command, arg, buf, sizeof(buf),
3223  key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
3224  fprintf(stderr, "Command reply for stream %d: ret:%d res:\n%s", i, ret, buf);
3225  } else if (key == 'c') {
3226  fprintf(stderr, "Queing commands only on filters supporting the specific command is unsupported\n");
3227  ret = AVERROR_PATCHWELCOME;
3228  } else {
3229  ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
3230  }
3231  }
3232  }
3233  } else {
3234  av_log(NULL, AV_LOG_ERROR,
3235  "Parse error, at least 3 arguments were expected, "
3236  "only %d given in string '%s'\n", n, buf);
3237  }
3238  }
3239  if (key == 'd' || key == 'D'){
3240  int debug=0;
3241  if(key == 'D') {
3242  debug = input_streams[0]->st->codec->debug<<1;
3243  if(!debug) debug = 1;
3244  while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
3245  debug += debug;
3246  }else
3247  if(scanf("%d", &debug)!=1)
3248  fprintf(stderr,"error parsing debug value\n");
3249  for(i=0;i<nb_input_streams;i++) {
3250  input_streams[i]->st->codec->debug = debug;
3251  }
3252  for(i=0;i<nb_output_streams;i++) {
3253  OutputStream *ost = output_streams[i];
3254  ost->enc_ctx->debug = debug;
3255  }
3256  if(debug) av_log_set_level(AV_LOG_DEBUG);
3257  fprintf(stderr,"debug=%d\n", debug);
3258  }
3259  if (key == '?'){
3260  fprintf(stderr, "key function\n"
3261  "? show this help\n"
3262  "+ increase verbosity\n"
3263  "- decrease verbosity\n"
3264  "c Send command to first matching filter supporting it\n"
3265  "C Send/Que command to all matching filters\n"
3266  "D cycle through available debug modes\n"
3267  "h dump packets/hex press to cycle through the 3 states\n"
3268  "q quit\n"
3269  "s Show QP histogram\n"
3270  );
3271  }
3272  return 0;
3273 }
3274 
3275 #if HAVE_PTHREADS
3276 static void *input_thread(void *arg)
3277 {
3278  InputFile *f = arg;
3279  int ret = 0;
3280 
3281  while (1) {
3282  AVPacket pkt;
3283  ret = av_read_frame(f->ctx, &pkt);
3284 
3285  if (ret == AVERROR(EAGAIN)) {
3286  av_usleep(10000);
3287  continue;
3288  }
3289  if (ret < 0) {
3290  av_thread_message_queue_set_err_recv(f->in_thread_queue, ret);
3291  break;
3292  }
3293  av_dup_packet(&pkt);
3294  ret = av_thread_message_queue_send(f->in_thread_queue, &pkt, 0);
3295  if (ret < 0) {
3296  if (ret != AVERROR_EOF)
3297  av_log(f->ctx, AV_LOG_ERROR,
3298  "Unable to send packet to main thread: %s\n",
3299  av_err2str(ret));
3300  av_free_packet(&pkt);
3301  av_thread_message_queue_set_err_recv(f->in_thread_queue, ret);
3302  break;
3303  }
3304  }
3305 
3306  return NULL;
3307 }
3308 
3309 static void free_input_threads(void)
3310 {
3311  int i;
3312 
3313  for (i = 0; i < nb_input_files; i++) {
3314  InputFile *f = input_files[i];
3315  AVPacket pkt;
3316 
3317  if (!f->in_thread_queue)
3318  continue;
3320  while (av_thread_message_queue_recv(f->in_thread_queue, &pkt, 0) >= 0)
3321  av_free_packet(&pkt);
3322 
3323  pthread_join(f->thread, NULL);
3324  f->joined = 1;
3325  av_thread_message_queue_free(&f->in_thread_queue);
3326  }
3327 }
3328 
3329 static int init_input_threads(void)
3330 {
3331  int i, ret;
3332 
3333  if (nb_input_files == 1)
3334  return 0;
3335 
3336  for (i = 0; i < nb_input_files; i++) {
3337  InputFile *f = input_files[i];
3338 
3339  if (f->ctx->pb ? !f->ctx->pb->seekable :
3340  strcmp(f->ctx->iformat->name, "lavfi"))
3341  f->non_blocking = 1;
3342  ret = av_thread_message_queue_alloc(&f->in_thread_queue,
3343  8, sizeof(AVPacket));
3344  if (ret < 0)
3345  return ret;
3346 
3347  if ((ret = pthread_create(&f->thread, NULL, input_thread, f))) {
3348  av_log(NULL, AV_LOG_ERROR, "pthread_create failed: %s. Try to increase `ulimit -v` or decrease `ulimit -s`.\n", strerror(ret));
3349  av_thread_message_queue_free(&f->in_thread_queue);
3350  return AVERROR(ret);
3351  }
3352  }
3353  return 0;
3354 }
3355 
3356 static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
3357 {
3358  return av_thread_message_queue_recv(f->in_thread_queue, pkt,
3359  f->non_blocking ?
3361 }
3362 #endif
3363 
3365 {
3366  if (f->rate_emu) {
3367  int i;
3368  for (i = 0; i < f->nb_streams; i++) {
3369  InputStream *ist = input_streams[f->ist_index + i];
3370  int64_t pts = av_rescale(ist->dts, 1000000, AV_TIME_BASE);
3371  int64_t now = av_gettime_relative() - ist->start;
3372  if (pts > now)
3373  return AVERROR(EAGAIN);
3374  }
3375  }
3376 
3377 #if HAVE_PTHREADS
3378  if (nb_input_files > 1)
3379  return get_input_packet_mt(f, pkt);
3380 #endif
3381  return av_read_frame(f->ctx, pkt);
3382 }
3383 
3384 static int got_eagain(void)
3385 {
3386  int i;
3387  for (i = 0; i < nb_output_streams; i++)
3388  if (output_streams[i]->unavailable)
3389  return 1;
3390  return 0;
3391 }
3392 
3393 static void reset_eagain(void)
3394 {
3395  int i;
3396  for (i = 0; i < nb_input_files; i++)
3397  input_files[i]->eagain = 0;
3398  for (i = 0; i < nb_output_streams; i++)
3399  output_streams[i]->unavailable = 0;
3400 }
3401 
3402 /*
3403  * Return
3404  * - 0 -- one packet was read and processed
3405  * - AVERROR(EAGAIN) -- no packets were available for selected file,
3406  * this function should be called again
3407  * - AVERROR_EOF -- this function should not be called again
3408  */
3409 static int process_input(int file_index)
3410 {
3411  InputFile *ifile = input_files[file_index];
3412  AVFormatContext *is;
3413  InputStream *ist;
3414  AVPacket pkt;
3415  int ret, i, j;
3416 
3417  is = ifile->ctx;
3418  ret = get_input_packet(ifile, &pkt);
3419 
3420  if (ret == AVERROR(EAGAIN)) {
3421  ifile->eagain = 1;
3422  return ret;
3423  }
3424  if (ret < 0) {
3425  if (ret != AVERROR_EOF) {
3426  print_error(is->filename, ret);
3427  if (exit_on_error)
3428  exit_program(1);
3429  }
3430 
3431  for (i = 0; i < ifile->nb_streams; i++) {
3432  ist = input_streams[ifile->ist_index + i];
3433  if (ist->decoding_needed) {
3434  ret = process_input_packet(ist, NULL);
3435  if (ret>0)
3436  return 0;
3437  }
3438 
3439  /* mark all outputs that don't go through lavfi as finished */
3440  for (j = 0; j < nb_output_streams; j++) {
3441  OutputStream *ost = output_streams[j];
3442 
3443  if (ost->source_index == ifile->ist_index + i &&
3444  (ost->stream_copy || ost->enc->type == AVMEDIA_TYPE_SUBTITLE))
3445  finish_output_stream(ost);
3446  }
3447  }
3448 
3449  ifile->eof_reached = 1;
3450  return AVERROR(EAGAIN);
3451  }
3452 
3453  reset_eagain();
3454 
3455  if (do_pkt_dump) {
3457  is->streams[pkt.stream_index]);
3458  }
3459  /* the following test is needed in case new streams appear
3460  dynamically in stream : we ignore them */
3461  if (pkt.stream_index >= ifile->nb_streams) {
3462  report_new_stream(file_index, &pkt);
3463  goto discard_packet;
3464  }
3465 
3466  ist = input_streams[ifile->ist_index + pkt.stream_index];
3467 
3468  ist->data_size += pkt.size;
3469  ist->nb_packets++;
3470 
3471  if (ist->discard)
3472  goto discard_packet;
3473 
3474  if (debug_ts) {
3475  av_log(NULL, AV_LOG_INFO, "demuxer -> ist_index:%d type:%s "
3476  "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",
3480  av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
3481  av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
3482  av_ts2str(input_files[ist->file_index]->ts_offset),
3483  av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
3484  }
3485 
3486  if(!ist->wrap_correction_done && is->start_time != AV_NOPTS_VALUE && ist->st->pts_wrap_bits < 64){
3487  int64_t stime, stime2;
3488  // Correcting starttime based on the enabled streams
3489  // 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.
3490  // so we instead do it here as part of discontinuity handling
3491  if ( ist->next_dts == AV_NOPTS_VALUE
3492  && ifile->ts_offset == -is->start_time
3493  && (is->iformat->flags & AVFMT_TS_DISCONT)) {
3494  int64_t new_start_time = INT64_MAX;
3495  for (i=0; i<is->nb_streams; i++) {
3496  AVStream *st = is->streams[i];
3497  if(st->discard == AVDISCARD_ALL || st->start_time == AV_NOPTS_VALUE)
3498  continue;
3499  new_start_time = FFMIN(new_start_time, av_rescale_q(st->start_time, st->time_base, AV_TIME_BASE_Q));
3500  }
3501  if (new_start_time > is->start_time) {
3502  av_log(is, AV_LOG_VERBOSE, "Correcting start time by %"PRId64"\n", new_start_time - is->start_time);
3503  ifile->ts_offset = -new_start_time;
3504  }
3505  }
3506 
3507  stime = av_rescale_q(is->start_time, AV_TIME_BASE_Q, ist->st->time_base);
3508  stime2= stime + (1ULL<<ist->st->pts_wrap_bits);
3509  ist->wrap_correction_done = 1;
3510 
3511  if(stime2 > stime && pkt.dts != AV_NOPTS_VALUE && pkt.dts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
3512  pkt.dts -= 1ULL<<ist->st->pts_wrap_bits;
3513  ist->wrap_correction_done = 0;
3514  }
3515  if(stime2 > stime && pkt.pts != AV_NOPTS_VALUE && pkt.pts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
3516  pkt.pts -= 1ULL<<ist->st->pts_wrap_bits;
3517  ist->wrap_correction_done = 0;
3518  }
3519  }
3520 
3521  /* add the stream-global side data to the first packet */
3522  if (ist->nb_packets == 1) {
3523  if (ist->st->nb_side_data)
3525  for (i = 0; i < ist->st->nb_side_data; i++) {
3526  AVPacketSideData *src_sd = &ist->st->side_data[i];
3527  uint8_t *dst_data;
3528 
3529  if (av_packet_get_side_data(&pkt, src_sd->type, NULL))
3530  continue;
3531 
3532  dst_data = av_packet_new_side_data(&pkt, src_sd->type, src_sd->size);
3533  if (!dst_data)
3534  exit_program(1);
3535 
3536  memcpy(dst_data, src_sd->data, src_sd->size);
3537  }
3538  }
3539 
3540  if (pkt.dts != AV_NOPTS_VALUE)
3541  pkt.dts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
3542  if (pkt.pts != AV_NOPTS_VALUE)
3543  pkt.pts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
3544 
3545  if (pkt.pts != AV_NOPTS_VALUE)
3546  pkt.pts *= ist->ts_scale;
3547  if (pkt.dts != AV_NOPTS_VALUE)
3548  pkt.dts *= ist->ts_scale;
3549 
3550  if ((ist->dec_ctx->codec_type == AVMEDIA_TYPE_VIDEO ||
3552  pkt.dts != AV_NOPTS_VALUE && ist->next_dts == AV_NOPTS_VALUE && !copy_ts
3553  && (is->iformat->flags & AVFMT_TS_DISCONT) && ifile->last_ts != AV_NOPTS_VALUE) {
3554  int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3555  int64_t delta = pkt_dts - ifile->last_ts;
3556  if (delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
3557  delta > 1LL*dts_delta_threshold*AV_TIME_BASE){
3558  ifile->ts_offset -= delta;
3559  av_log(NULL, AV_LOG_DEBUG,
3560  "Inter stream timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
3561  delta, ifile->ts_offset);
3562  pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3563  if (pkt.pts != AV_NOPTS_VALUE)
3564  pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3565  }
3566  }
3567 
3568  if ((ist->dec_ctx->codec_type == AVMEDIA_TYPE_VIDEO ||
3570  pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE &&
3571  !copy_ts) {
3572  int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3573  int64_t delta = pkt_dts - ist->next_dts;
3574  if (is->iformat->flags & AVFMT_TS_DISCONT) {
3575  if (delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
3576  delta > 1LL*dts_delta_threshold*AV_TIME_BASE ||
3577  pkt_dts + AV_TIME_BASE/10 < FFMAX(ist->pts, ist->dts)) {
3578  ifile->ts_offset -= delta;
3579  av_log(NULL, AV_LOG_DEBUG,
3580  "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
3581  delta, ifile->ts_offset);
3582  pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3583  if (pkt.pts != AV_NOPTS_VALUE)
3584  pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3585  }
3586  } else {
3587  if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
3588  delta > 1LL*dts_error_threshold*AV_TIME_BASE) {
3589  av_log(NULL, AV_LOG_WARNING, "DTS %"PRId64", next:%"PRId64" st:%d invalid dropping\n", pkt.dts, ist->next_dts, pkt.stream_index);
3590  pkt.dts = AV_NOPTS_VALUE;
3591  }
3592  if (pkt.pts != AV_NOPTS_VALUE){
3593  int64_t pkt_pts = av_rescale_q(pkt.pts, ist->st->time_base, AV_TIME_BASE_Q);
3594  delta = pkt_pts - ist->next_dts;
3595  if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
3596  delta > 1LL*dts_error_threshold*AV_TIME_BASE) {
3597  av_log(NULL, AV_LOG_WARNING, "PTS %"PRId64", next:%"PRId64" invalid dropping st:%d\n", pkt.pts, ist->next_dts, pkt.stream_index);
3598  pkt.pts = AV_NOPTS_VALUE;
3599  }
3600  }
3601  }
3602  }
3603 
3604  if (pkt.dts != AV_NOPTS_VALUE)
3605  ifile->last_ts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3606 
3607  if (debug_ts) {
3608  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",
3610  av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
3611  av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
3612  av_ts2str(input_files[ist->file_index]->ts_offset),
3613  av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
3614  }
3615 
3616  sub2video_heartbeat(ist, pkt.pts);
3617 
3618  ret = process_input_packet(ist, &pkt);
3619  if (ret < 0) {
3620  av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d: %s\n",
3621  ist->file_index, ist->st->index, av_err2str(ret));
3622  if (exit_on_error)
3623  exit_program(1);
3624  }
3625 
3626 discard_packet:
3627  av_free_packet(&pkt);
3628 
3629  return 0;
3630 }
3631 
3632 /**
3633  * Perform a step of transcoding for the specified filter graph.
3634  *
3635  * @param[in] graph filter graph to consider
3636  * @param[out] best_ist input stream where a frame would allow to continue
3637  * @return 0 for success, <0 for error
3638  */
3639 static int transcode_from_filter(FilterGraph *graph, InputStream **best_ist)
3640 {
3641  int i, ret;
3642  int nb_requests, nb_requests_max = 0;
3643  InputFilter *ifilter;
3644  InputStream *ist;
3645 
3646  *best_ist = NULL;
3647  ret = avfilter_graph_request_oldest(graph->graph);
3648  if (ret >= 0)
3649  return reap_filters();
3650 
3651  if (ret == AVERROR_EOF) {
3652  ret = reap_filters();
3653  for (i = 0; i < graph->nb_outputs; i++)
3654  close_output_stream(graph->outputs[i]->ost);
3655  return ret;
3656  }
3657  if (ret != AVERROR(EAGAIN))
3658  return ret;
3659 
3660  for (i = 0; i < graph->nb_inputs; i++) {
3661  ifilter = graph->inputs[i];
3662  ist = ifilter->ist;
3663  if (input_files[ist->file_index]->eagain ||
3664  input_files[ist->file_index]->eof_reached)
3665  continue;
3666  nb_requests = av_buffersrc_get_nb_failed_requests(ifilter->filter);
3667  if (nb_requests > nb_requests_max) {
3668  nb_requests_max = nb_requests;
3669  *best_ist = ist;
3670  }
3671  }
3672 
3673  if (!*best_ist)
3674  for (i = 0; i < graph->nb_outputs; i++)
3675  graph->outputs[i]->ost->unavailable = 1;
3676 
3677  return 0;
3678 }
3679 
3680 /**
3681  * Run a single step of transcoding.
3682  *
3683  * @return 0 for success, <0 for error
3684  */
3685 static int transcode_step(void)
3686 {
3687  OutputStream *ost;
3688  InputStream *ist;
3689  int ret;
3690 
3691  ost = choose_output();
3692  if (!ost) {
3693  if (got_eagain()) {
3694  reset_eagain();
3695  av_usleep(10000);
3696  return 0;
3697  }
3698  av_log(NULL, AV_LOG_VERBOSE, "No more inputs to read from, finishing.\n");
3699  return AVERROR_EOF;
3700  }
3701 
3702  if (ost->filter) {
3703  if ((ret = transcode_from_filter(ost->filter->graph, &ist)) < 0)
3704  return ret;
3705  if (!ist)
3706  return 0;
3707  } else {
3708  av_assert0(ost->source_index >= 0);
3709  ist = input_streams[ost->source_index];
3710  }
3711 
3712  ret = process_input(ist->file_index);
3713  if (ret == AVERROR(EAGAIN)) {
3714  if (input_files[ist->file_index]->eagain)
3715  ost->unavailable = 1;
3716  return 0;
3717  }
3718  if (ret < 0)
3719  return ret == AVERROR_EOF ? 0 : ret;
3720 
3721  return reap_filters();
3722 }
3723 
3724 /*
3725  * The following code is the main loop of the file converter
3726  */
3727 static int transcode(void)
3728 {
3729  int ret, i;
3730  AVFormatContext *os;
3731  OutputStream *ost;
3732  InputStream *ist;
3733  int64_t timer_start;
3734 
3735  ret = transcode_init();
3736  if (ret < 0)
3737  goto fail;
3738 
3739  if (stdin_interaction) {
3740  av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
3741  }
3742 
3743  timer_start = av_gettime_relative();
3744 
3745 #if HAVE_PTHREADS
3746  if ((ret = init_input_threads()) < 0)
3747  goto fail;
3748 #endif
3749 
3750  while (!received_sigterm) {
3751  int64_t cur_time= av_gettime_relative();
3752 
3753  /* if 'q' pressed, exits */
3754  if (stdin_interaction)
3755  if (check_keyboard_interaction(cur_time) < 0)
3756  break;
3757 
3758  /* check if there's any stream where output is still needed */
3759  if (!need_output()) {
3760  av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n");
3761  break;
3762  }
3763 
3764  ret = transcode_step();
3765  if (ret < 0) {
3766  if (ret == AVERROR_EOF || ret == AVERROR(EAGAIN))
3767  continue;
3768 
3769  av_log(NULL, AV_LOG_ERROR, "Error while filtering.\n");
3770  break;
3771  }
3772 
3773  /* dump report by using the output first video and audio streams */
3774  print_report(0, timer_start, cur_time);
3775  }
3776 #if HAVE_PTHREADS
3778 #endif
3779 
3780  /* at the end of stream, we must flush the decoder buffers */
3781  for (i = 0; i < nb_input_streams; i++) {
3782  ist = input_streams[i];
3783  if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
3784  process_input_packet(ist, NULL);
3785  }
3786  }
3787  flush_encoders();
3788 
3789  term_exit();
3790 
3791  /* write the trailer if needed and close file */
3792  for (i = 0; i < nb_output_files; i++) {
3793  os = output_files[i]->ctx;
3794  av_write_trailer(os);
3795  }
3796 
3797  /* dump report by using the first video and audio streams */
3798  print_report(1, timer_start, av_gettime_relative());
3799 
3800  /* close each encoder */
3801  for (i = 0; i < nb_output_streams; i++) {
3802  ost = output_streams[i];
3803  if (ost->encoding_needed) {
3804  av_freep(&ost->enc_ctx->stats_in);
3805  }
3806  }
3807 
3808  /* close each decoder */
3809  for (i = 0; i < nb_input_streams; i++) {
3810  ist = input_streams[i];
3811  if (ist->decoding_needed) {
3812  avcodec_close(ist->dec_ctx);
3813  if (ist->hwaccel_uninit)
3814  ist->hwaccel_uninit(ist->dec_ctx);
3815  }
3816  }
3817 
3818  /* finished ! */
3819  ret = 0;
3820 
3821  fail:
3822 #if HAVE_PTHREADS
3824 #endif
3825 
3826  if (output_streams) {
3827  for (i = 0; i < nb_output_streams; i++) {
3828  ost = output_streams[i];
3829  if (ost) {
3830  if (ost->logfile) {
3831  fclose(ost->logfile);
3832  ost->logfile = NULL;
3833  }
3834  av_freep(&ost->forced_kf_pts);
3835  av_freep(&ost->apad);
3836  av_dict_free(&ost->encoder_opts);
3837  av_dict_free(&ost->swr_opts);
3838  av_dict_free(&ost->resample_opts);
3839  av_dict_free(&ost->bsf_args);
3840  }
3841  }
3842  }
3843  return ret;
3844 }
3845 
3846 
3847 static int64_t getutime(void)
3848 {
3849 #if HAVE_GETRUSAGE
3850  struct rusage rusage;
3851 
3852  getrusage(RUSAGE_SELF, &rusage);
3853  return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
3854 #elif HAVE_GETPROCESSTIMES
3855  HANDLE proc;
3856  FILETIME c, e, k, u;
3857  proc = GetCurrentProcess();
3858  GetProcessTimes(proc, &c, &e, &k, &u);
3859  return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
3860 #else
3861  return av_gettime_relative();
3862 #endif
3863 }
3864 
3865 static int64_t getmaxrss(void)
3866 {
3867 #if HAVE_GETRUSAGE && HAVE_STRUCT_RUSAGE_RU_MAXRSS
3868  struct rusage rusage;
3869  getrusage(RUSAGE_SELF, &rusage);
3870  return (int64_t)rusage.ru_maxrss * 1024;
3871 #elif HAVE_GETPROCESSMEMORYINFO
3872  HANDLE proc;
3873  PROCESS_MEMORY_COUNTERS memcounters;
3874  proc = GetCurrentProcess();
3875  memcounters.cb = sizeof(memcounters);
3876  GetProcessMemoryInfo(proc, &memcounters, sizeof(memcounters));
3877  return memcounters.PeakPagefileUsage;
3878 #else
3879  return 0;
3880 #endif
3881 }
3882 
3883 static void log_callback_null(void *ptr, int level, const char *fmt, va_list vl)
3884 {
3885 }
3886 
3887 int main(int argc, char **argv)
3888 {
3889  int ret;
3890  int64_t ti;
3891 
3893 
3894  setvbuf(stderr,NULL,_IONBF,0); /* win32 runtime needs this */
3895 
3897  parse_loglevel(argc, argv, options);
3898 
3899  if(argc>1 && !strcmp(argv[1], "-d")){
3900  run_as_daemon=1;
3902  argc--;
3903  argv++;
3904  }
3905 
3907 #if CONFIG_AVDEVICE
3909 #endif
3911  av_register_all();
3913 
3914  show_banner(argc, argv, options);
3915 
3916  term_init();
3917 
3918  /* parse options and open all input/output files */
3919  ret = ffmpeg_parse_options(argc, argv);
3920  if (ret < 0)
3921  exit_program(1);
3922 
3923  if (nb_output_files <= 0 && nb_input_files == 0) {
3924  show_usage();
3925  av_log(NULL, AV_LOG_WARNING, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
3926  exit_program(1);
3927  }
3928 
3929  /* file converter / grab */
3930  if (nb_output_files <= 0) {
3931  av_log(NULL, AV_LOG_FATAL, "At least one output file must be specified\n");
3932  exit_program(1);
3933  }
3934 
3935 // if (nb_input_files == 0) {
3936 // av_log(NULL, AV_LOG_FATAL, "At least one input file must be specified\n");
3937 // exit_program(1);
3938 // }
3939 
3940  current_time = ti = getutime();
3941  if (transcode() < 0)
3942  exit_program(1);
3943  ti = getutime() - ti;
3944  if (do_benchmark) {
3945  printf("bench: utime=%0.3fs\n", ti / 1000000.0);
3946  }
3947  av_log(NULL, AV_LOG_DEBUG, "%"PRIu64" frames successfully decoded, %"PRIu64" decoding errors\n",
3950  exit_program(69);
3951 
3953  return main_return_code;
3954 }