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 
479  av_parser_close(ost->parser);
480 
481  av_freep(&ost->forced_keyframes);
483  av_freep(&ost->avfilter);
484  av_freep(&ost->logfile_prefix);
485 
487  ost->audio_channels_mapped = 0;
488 
490 
491  av_freep(&output_streams[i]);
492  }
493 #if HAVE_PTHREADS
495 #endif
496  for (i = 0; i < nb_input_files; i++) {
497  avformat_close_input(&input_files[i]->ctx);
498  av_freep(&input_files[i]);
499  }
500  for (i = 0; i < nb_input_streams; i++) {
501  InputStream *ist = input_streams[i];
502 
505  av_dict_free(&ist->decoder_opts);
508  av_freep(&ist->filters);
509  av_freep(&ist->hwaccel_device);
510 
512 
513  av_freep(&input_streams[i]);
514  }
515 
516  if (vstats_file)
517  fclose(vstats_file);
519 
520  av_freep(&input_streams);
521  av_freep(&input_files);
522  av_freep(&output_streams);
523  av_freep(&output_files);
524 
525  uninit_opts();
526 
528 
529  if (received_sigterm) {
530  av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
531  (int) received_sigterm);
532  } else if (ret && transcode_init_done) {
533  av_log(NULL, AV_LOG_INFO, "Conversion failed!\n");
534  }
535  term_exit();
536 }
537 
539 {
540  AVDictionaryEntry *t = NULL;
541 
542  while ((t = av_dict_get(b, "", t, AV_DICT_IGNORE_SUFFIX))) {
543  av_dict_set(a, t->key, NULL, AV_DICT_MATCH_CASE);
544  }
545 }
546 
548 {
550  if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
551  av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
552  exit_program(1);
553  }
554 }
555 
556 static void abort_codec_experimental(AVCodec *c, int encoder)
557 {
558  exit_program(1);
559 }
560 
561 static void update_benchmark(const char *fmt, ...)
562 {
563  if (do_benchmark_all) {
564  int64_t t = getutime();
565  va_list va;
566  char buf[1024];
567 
568  if (fmt) {
569  va_start(va, fmt);
570  vsnprintf(buf, sizeof(buf), fmt, va);
571  va_end(va);
572  printf("bench: %8"PRIu64" %s \n", t - current_time, buf);
573  }
574  current_time = t;
575  }
576 }
577 
578 static void close_all_output_streams(OutputStream *ost, OSTFinished this_stream, OSTFinished others)
579 {
580  int i;
581  for (i = 0; i < nb_output_streams; i++) {
582  OutputStream *ost2 = output_streams[i];
583  ost2->finished |= ost == ost2 ? this_stream : others;
584  }
585 }
586 
588 {
590  AVCodecContext *avctx = ost->st->codec;
591  int ret;
592 
593  if (!ost->st->codec->extradata_size && ost->enc_ctx->extradata_size) {
595  if (ost->st->codec->extradata) {
596  memcpy(ost->st->codec->extradata, ost->enc_ctx->extradata, ost->enc_ctx->extradata_size);
598  }
599  }
600 
603  pkt->pts = pkt->dts = AV_NOPTS_VALUE;
604 
605  /*
606  * Audio encoders may split the packets -- #frames in != #packets out.
607  * But there is no reordering, so we can limit the number of output packets
608  * by simply dropping them here.
609  * Counting encoded video frames needs to be done separately because of
610  * reordering, see do_video_out()
611  */
612  if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
613  if (ost->frame_number >= ost->max_frames) {
614  av_free_packet(pkt);
615  return;
616  }
617  ost->frame_number++;
618  }
619 
620  if (bsfc)
622 
623  while (bsfc) {
624  AVPacket new_pkt = *pkt;
625  int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
626  &new_pkt.data, &new_pkt.size,
627  pkt->data, pkt->size,
628  pkt->flags & AV_PKT_FLAG_KEY);
629  if(a == 0 && new_pkt.data != pkt->data && new_pkt.destruct) {
630  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
631  if(t) {
632  memcpy(t, new_pkt.data, new_pkt.size);
633  memset(t + new_pkt.size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
634  new_pkt.data = t;
635  new_pkt.buf = NULL;
636  a = 1;
637  } else
638  a = AVERROR(ENOMEM);
639  }
640  if (a > 0) {
641  pkt->side_data = NULL;
642  pkt->side_data_elems = 0;
643  av_free_packet(pkt);
644  new_pkt.buf = av_buffer_create(new_pkt.data, new_pkt.size,
645  av_buffer_default_free, NULL, 0);
646  if (!new_pkt.buf)
647  exit_program(1);
648  } else if (a < 0) {
649  av_log(NULL, AV_LOG_ERROR, "Failed to open bitstream filter %s for stream %d with codec %s",
650  bsfc->filter->name, pkt->stream_index,
651  avctx->codec ? avctx->codec->name : "copy");
652  print_error("", a);
653  if (exit_on_error)
654  exit_program(1);
655  }
656  *pkt = new_pkt;
657 
658  bsfc = bsfc->next;
659  }
660 
661  if (!(s->oformat->flags & AVFMT_NOTIMESTAMPS)) {
662  if (pkt->dts != AV_NOPTS_VALUE &&
663  pkt->pts != AV_NOPTS_VALUE &&
664  pkt->dts > pkt->pts) {
665  av_log(s, AV_LOG_WARNING, "Invalid DTS: %"PRId64" PTS: %"PRId64" in output stream %d:%d, replacing by guess\n",
666  pkt->dts, pkt->pts,
667  ost->file_index, ost->st->index);
668  pkt->pts =
669  pkt->dts = pkt->pts + pkt->dts + ost->last_mux_dts + 1
670  - FFMIN3(pkt->pts, pkt->dts, ost->last_mux_dts + 1)
671  - FFMAX3(pkt->pts, pkt->dts, ost->last_mux_dts + 1);
672  }
673  if(
674  (avctx->codec_type == AVMEDIA_TYPE_AUDIO || avctx->codec_type == AVMEDIA_TYPE_VIDEO) &&
675  pkt->dts != AV_NOPTS_VALUE &&
676  ost->last_mux_dts != AV_NOPTS_VALUE) {
677  int64_t max = ost->last_mux_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT);
678  if (pkt->dts < max) {
679  int loglevel = max - pkt->dts > 2 || avctx->codec_type == AVMEDIA_TYPE_VIDEO ? AV_LOG_WARNING : AV_LOG_DEBUG;
680  av_log(s, loglevel, "Non-monotonous DTS in output stream "
681  "%d:%d; previous: %"PRId64", current: %"PRId64"; ",
682  ost->file_index, ost->st->index, ost->last_mux_dts, pkt->dts);
683  if (exit_on_error) {
684  av_log(NULL, AV_LOG_FATAL, "aborting.\n");
685  exit_program(1);
686  }
687  av_log(s, loglevel, "changing to %"PRId64". This may result "
688  "in incorrect timestamps in the output file.\n",
689  max);
690  if(pkt->pts >= pkt->dts)
691  pkt->pts = FFMAX(pkt->pts, max);
692  pkt->dts = max;
693  }
694  }
695  }
696  ost->last_mux_dts = pkt->dts;
697 
698  ost->data_size += pkt->size;
699  ost->packets_written++;
700 
701  pkt->stream_index = ost->index;
702 
703  if (debug_ts) {
704  av_log(NULL, AV_LOG_INFO, "muxer <- type:%s "
705  "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s size:%d\n",
707  av_ts2str(pkt->pts), av_ts2timestr(pkt->pts, &ost->st->time_base),
708  av_ts2str(pkt->dts), av_ts2timestr(pkt->dts, &ost->st->time_base),
709  pkt->size
710  );
711  }
712 
713  ret = av_interleaved_write_frame(s, pkt);
714  if (ret < 0) {
715  print_error("av_interleaved_write_frame()", ret);
716  main_return_code = 1;
718  }
719  av_free_packet(pkt);
720 }
721 
723 {
724  OutputFile *of = output_files[ost->file_index];
725 
726  ost->finished |= ENCODER_FINISHED;
727  if (of->shortest) {
728  int64_t end = av_rescale_q(ost->sync_opts - ost->first_pts, ost->enc_ctx->time_base, AV_TIME_BASE_Q);
729  of->recording_time = FFMIN(of->recording_time, end);
730  }
731 }
732 
734 {
735  OutputFile *of = output_files[ost->file_index];
736 
737  if (of->recording_time != INT64_MAX &&
739  AV_TIME_BASE_Q) >= 0) {
740  close_output_stream(ost);
741  return 0;
742  }
743  return 1;
744 }
745 
747  AVFrame *frame)
748 {
749  AVCodecContext *enc = ost->enc_ctx;
750  AVPacket pkt;
751  int got_packet = 0;
752 
753  av_init_packet(&pkt);
754  pkt.data = NULL;
755  pkt.size = 0;
756 
757  if (!check_recording_time(ost))
758  return;
759 
760  if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
761  frame->pts = ost->sync_opts;
762  ost->sync_opts = frame->pts + frame->nb_samples;
763  ost->samples_encoded += frame->nb_samples;
764  ost->frames_encoded++;
765 
766  av_assert0(pkt.size || !pkt.data);
767  update_benchmark(NULL);
768  if (debug_ts) {
769  av_log(NULL, AV_LOG_INFO, "encoder <- type:audio "
770  "frame_pts:%s frame_pts_time:%s time_base:%d/%d\n",
771  av_ts2str(frame->pts), av_ts2timestr(frame->pts, &enc->time_base),
772  enc->time_base.num, enc->time_base.den);
773  }
774 
775  if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
776  av_log(NULL, AV_LOG_FATAL, "Audio encoding failed (avcodec_encode_audio2)\n");
777  exit_program(1);
778  }
779  update_benchmark("encode_audio %d.%d", ost->file_index, ost->index);
780 
781  if (got_packet) {
782  av_packet_rescale_ts(&pkt, enc->time_base, ost->st->time_base);
783 
784  if (debug_ts) {
785  av_log(NULL, AV_LOG_INFO, "encoder -> type:audio "
786  "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
787  av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
788  av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
789  }
790 
791  write_frame(s, &pkt, ost);
792  }
793 }
794 
796  OutputStream *ost,
797  InputStream *ist,
798  AVSubtitle *sub)
799 {
800  int subtitle_out_max_size = 1024 * 1024;
801  int subtitle_out_size, nb, i;
802  AVCodecContext *enc;
803  AVPacket pkt;
804  int64_t pts;
805 
806  if (sub->pts == AV_NOPTS_VALUE) {
807  av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
808  if (exit_on_error)
809  exit_program(1);
810  return;
811  }
812 
813  enc = ost->enc_ctx;
814 
815  if (!subtitle_out) {
816  subtitle_out = av_malloc(subtitle_out_max_size);
817  }
818 
819  /* Note: DVB subtitle need one packet to draw them and one other
820  packet to clear them */
821  /* XXX: signal it in the codec context ? */
823  nb = 2;
824  else
825  nb = 1;
826 
827  /* shift timestamp to honor -ss and make check_recording_time() work with -t */
828  pts = sub->pts;
829  if (output_files[ost->file_index]->start_time != AV_NOPTS_VALUE)
830  pts -= output_files[ost->file_index]->start_time;
831  for (i = 0; i < nb; i++) {
832  unsigned save_num_rects = sub->num_rects;
833 
834  ost->sync_opts = av_rescale_q(pts, AV_TIME_BASE_Q, enc->time_base);
835  if (!check_recording_time(ost))
836  return;
837 
838  sub->pts = pts;
839  // start_display_time is required to be 0
840  sub->pts += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
842  sub->start_display_time = 0;
843  if (i == 1)
844  sub->num_rects = 0;
845 
846  ost->frames_encoded++;
847 
848  subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
849  subtitle_out_max_size, sub);
850  if (i == 1)
851  sub->num_rects = save_num_rects;
852  if (subtitle_out_size < 0) {
853  av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
854  exit_program(1);
855  }
856 
857  av_init_packet(&pkt);
858  pkt.data = subtitle_out;
859  pkt.size = subtitle_out_size;
860  pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
861  pkt.duration = av_rescale_q(sub->end_display_time, (AVRational){ 1, 1000 }, ost->st->time_base);
862  if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
863  /* XXX: the pts correction is handled here. Maybe handling
864  it in the codec would be better */
865  if (i == 0)
866  pkt.pts += 90 * sub->start_display_time;
867  else
868  pkt.pts += 90 * sub->end_display_time;
869  }
870  pkt.dts = pkt.pts;
871  write_frame(s, &pkt, ost);
872  }
873 }
874 
876  OutputStream *ost,
877  AVFrame *in_picture)
878 {
879  int ret, format_video_sync;
880  AVPacket pkt;
881  AVCodecContext *enc = ost->enc_ctx;
882  AVCodecContext *mux_enc = ost->st->codec;
883  int nb_frames, i;
884  double sync_ipts, delta;
885  double duration = 0;
886  int frame_size = 0;
887  InputStream *ist = NULL;
888 
889  if (ost->source_index >= 0)
890  ist = input_streams[ost->source_index];
891 
892  if(ist && ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE && ost->frame_rate.num)
893  duration = 1/(av_q2d(ost->frame_rate) * av_q2d(enc->time_base));
894 
895  sync_ipts = in_picture->pts;
896  delta = sync_ipts - ost->sync_opts + duration;
897 
898  /* by default, we output a single frame */
899  nb_frames = 1;
900 
901  format_video_sync = video_sync_method;
902  if (format_video_sync == VSYNC_AUTO) {
903  if(!strcmp(s->oformat->name, "avi")) {
904  format_video_sync = VSYNC_VFR;
905  } else
907  if ( ist
908  && format_video_sync == VSYNC_CFR
909  && input_files[ist->file_index]->ctx->nb_streams == 1
910  && input_files[ist->file_index]->input_ts_offset == 0) {
911  format_video_sync = VSYNC_VSCFR;
912  }
913  if (format_video_sync == VSYNC_CFR && copy_ts) {
914  format_video_sync = VSYNC_VSCFR;
915  }
916  }
917 
918  switch (format_video_sync) {
919  case VSYNC_VSCFR:
920  if (ost->frame_number == 0 && delta - duration >= 0.5) {
921  av_log(NULL, AV_LOG_DEBUG, "Not duplicating %d initial frames\n", (int)lrintf(delta - duration));
922  delta = duration;
923  ost->sync_opts = lrint(sync_ipts);
924  }
925  case VSYNC_CFR:
926  // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
927  if (delta < -1.1)
928  nb_frames = 0;
929  else if (delta > 1.1)
930  nb_frames = lrintf(delta);
931  break;
932  case VSYNC_VFR:
933  if (delta <= -0.6)
934  nb_frames = 0;
935  else if (delta > 0.6)
936  ost->sync_opts = lrint(sync_ipts);
937  break;
938  case VSYNC_DROP:
939  case VSYNC_PASSTHROUGH:
940  ost->sync_opts = lrint(sync_ipts);
941  break;
942  default:
943  av_assert0(0);
944  }
945 
946  nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
947  if (nb_frames == 0) {
948  nb_frames_drop++;
949  av_log(NULL, AV_LOG_VERBOSE,
950  "*** dropping frame %d from stream %d at ts %"PRId64"\n",
951  ost->frame_number, ost->st->index, in_picture->pts);
952  return;
953  } else if (nb_frames > 1) {
954  if (nb_frames > dts_error_threshold * 30) {
955  av_log(NULL, AV_LOG_ERROR, "%d frame duplication too large, skipping\n", nb_frames - 1);
956  nb_frames_drop++;
957  return;
958  }
959  nb_frames_dup += nb_frames - 1;
960  av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
961  }
962 
963  /* duplicates frame if needed */
964  for (i = 0; i < nb_frames; i++) {
965  av_init_packet(&pkt);
966  pkt.data = NULL;
967  pkt.size = 0;
968 
969  in_picture->pts = ost->sync_opts;
970 
971 #if 1
972  if (!check_recording_time(ost))
973 #else
974  if (ost->frame_number >= ost->max_frames)
975 #endif
976  return;
977 
978  if (s->oformat->flags & AVFMT_RAWPICTURE &&
979  enc->codec->id == AV_CODEC_ID_RAWVIDEO) {
980  /* raw pictures are written as AVPicture structure to
981  avoid any copies. We support temporarily the older
982  method. */
983  mux_enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
984  mux_enc->coded_frame->top_field_first = in_picture->top_field_first;
985  if (mux_enc->coded_frame->interlaced_frame)
987  else
989  pkt.data = (uint8_t *)in_picture;
990  pkt.size = sizeof(AVPicture);
991  pkt.pts = av_rescale_q(in_picture->pts, enc->time_base, ost->st->time_base);
992  pkt.flags |= AV_PKT_FLAG_KEY;
993 
994  write_frame(s, &pkt, ost);
995  } else {
996  int got_packet, forced_keyframe = 0;
997  double pts_time;
998 
1000  ost->top_field_first >= 0)
1001  in_picture->top_field_first = !!ost->top_field_first;
1002 
1003  if (in_picture->interlaced_frame) {
1004  if (enc->codec->id == AV_CODEC_ID_MJPEG)
1005  mux_enc->field_order = in_picture->top_field_first ? AV_FIELD_TT:AV_FIELD_BB;
1006  else
1007  mux_enc->field_order = in_picture->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
1008  } else
1009  mux_enc->field_order = AV_FIELD_PROGRESSIVE;
1010 
1011  in_picture->quality = enc->global_quality;
1012  if (!enc->me_threshold)
1013  in_picture->pict_type = 0;
1014 
1015  pts_time = in_picture->pts != AV_NOPTS_VALUE ?
1016  in_picture->pts * av_q2d(enc->time_base) : NAN;
1017  if (ost->forced_kf_index < ost->forced_kf_count &&
1018  in_picture->pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1019  ost->forced_kf_index++;
1020  forced_keyframe = 1;
1021  } else if (ost->forced_keyframes_pexpr) {
1022  double res;
1023  ost->forced_keyframes_expr_const_values[FKF_T] = pts_time;
1026  av_dlog(NULL, "force_key_frame: n:%f n_forced:%f prev_forced_n:%f t:%f prev_forced_t:%f -> res:%f\n",
1032  res);
1033  if (res) {
1034  forced_keyframe = 1;
1040  }
1041 
1043  }
1044 
1045  if (forced_keyframe) {
1046  in_picture->pict_type = AV_PICTURE_TYPE_I;
1047  av_log(NULL, AV_LOG_DEBUG, "Forced keyframe at time %f\n", pts_time);
1048  }
1049 
1050  update_benchmark(NULL);
1051  if (debug_ts) {
1052  av_log(NULL, AV_LOG_INFO, "encoder <- type:video "
1053  "frame_pts:%s frame_pts_time:%s time_base:%d/%d\n",
1054  av_ts2str(in_picture->pts), av_ts2timestr(in_picture->pts, &enc->time_base),
1055  enc->time_base.num, enc->time_base.den);
1056  }
1057 
1058  ost->frames_encoded++;
1059 
1060  ret = avcodec_encode_video2(enc, &pkt, in_picture, &got_packet);
1061  update_benchmark("encode_video %d.%d", ost->file_index, ost->index);
1062  if (ret < 0) {
1063  av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1064  exit_program(1);
1065  }
1066 
1067  if (got_packet) {
1068  if (debug_ts) {
1069  av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
1070  "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
1071  av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &enc->time_base),
1072  av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &enc->time_base));
1073  }
1074 
1075  if (pkt.pts == AV_NOPTS_VALUE && !(enc->codec->capabilities & CODEC_CAP_DELAY))
1076  pkt.pts = ost->sync_opts;
1077 
1078  av_packet_rescale_ts(&pkt, enc->time_base, ost->st->time_base);
1079 
1080  if (debug_ts) {
1081  av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
1082  "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
1083  av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
1084  av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
1085  }
1086 
1087  frame_size = pkt.size;
1088  write_frame(s, &pkt, ost);
1089 
1090  /* if two pass, output log */
1091  if (ost->logfile && enc->stats_out) {
1092  fprintf(ost->logfile, "%s", enc->stats_out);
1093  }
1094  }
1095  }
1096  ost->sync_opts++;
1097  /*
1098  * For video, number of frames in == number of packets out.
1099  * But there may be reordering, so we can't throw away frames on encoder
1100  * flush, we need to limit them here, before they go into encoder.
1101  */
1102  ost->frame_number++;
1103 
1104  if (vstats_filename && frame_size)
1105  do_video_stats(ost, frame_size);
1106  }
1107 }
1108 
1109 static double psnr(double d)
1110 {
1111  return -10.0 * log(d) / log(10.0);
1112 }
1113 
1115 {
1116  AVCodecContext *enc;
1117  int frame_number;
1118  double ti1, bitrate, avg_bitrate;
1119 
1120  /* this is executed just the first time do_video_stats is called */
1121  if (!vstats_file) {
1122  vstats_file = fopen(vstats_filename, "w");
1123  if (!vstats_file) {
1124  perror("fopen");
1125  exit_program(1);
1126  }
1127  }
1128 
1129  enc = ost->enc_ctx;
1130  if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1131  frame_number = ost->st->nb_frames;
1132  fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
1133  if (enc->flags&CODEC_FLAG_PSNR)
1134  fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
1135 
1136  fprintf(vstats_file,"f_size= %6d ", frame_size);
1137  /* compute pts value */
1138  ti1 = av_stream_get_end_pts(ost->st) * av_q2d(ost->st->time_base);
1139  if (ti1 < 0.01)
1140  ti1 = 0.01;
1141 
1142  bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1143  avg_bitrate = (double)(ost->data_size * 8) / ti1 / 1000.0;
1144  fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1145  (double)ost->data_size / 1024, ti1, bitrate, avg_bitrate);
1146  fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1147  }
1148 }
1149 
1151 {
1152  OutputFile *of = output_files[ost->file_index];
1153  int i;
1154 
1156 
1157  if (of->shortest) {
1158  for (i = 0; i < of->ctx->nb_streams; i++)
1159  output_streams[of->ost_index + i]->finished = ENCODER_FINISHED | MUXER_FINISHED;
1160  }
1161 }
1162 
1163 /**
1164  * Get and encode new output from any of the filtergraphs, without causing
1165  * activity.
1166  *
1167  * @return 0 for success, <0 for severe errors
1168  */
1169 static int reap_filters(void)
1170 {
1171  AVFrame *filtered_frame = NULL;
1172  int i;
1173  int64_t frame_pts;
1174 
1175  /* Reap all buffers present in the buffer sinks */
1176  for (i = 0; i < nb_output_streams; i++) {
1177  OutputStream *ost = output_streams[i];
1178  OutputFile *of = output_files[ost->file_index];
1180  AVCodecContext *enc = ost->enc_ctx;
1181  int ret = 0;
1182 
1183  if (!ost->filter)
1184  continue;
1185  filter = ost->filter->filter;
1186 
1187  if (!ost->filtered_frame && !(ost->filtered_frame = av_frame_alloc())) {
1188  return AVERROR(ENOMEM);
1189  }
1190  filtered_frame = ost->filtered_frame;
1191 
1192  while (1) {
1193  ret = av_buffersink_get_frame_flags(filter, filtered_frame,
1195  if (ret < 0) {
1196  if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF) {
1197  av_log(NULL, AV_LOG_WARNING,
1198  "Error in av_buffersink_get_frame_flags(): %s\n", av_err2str(ret));
1199  }
1200  break;
1201  }
1202  if (ost->finished) {
1203  av_frame_unref(filtered_frame);
1204  continue;
1205  }
1206  frame_pts = AV_NOPTS_VALUE;
1207  if (filtered_frame->pts != AV_NOPTS_VALUE) {
1208  int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time;
1209  filtered_frame->pts = frame_pts =
1210  av_rescale_q(filtered_frame->pts, filter->inputs[0]->time_base, enc->time_base) -
1211  av_rescale_q(start_time, AV_TIME_BASE_Q, enc->time_base);
1212  }
1213  //if (ost->source_index >= 0)
1214  // *filtered_frame= *input_streams[ost->source_index]->decoded_frame; //for me_threshold
1215 
1216  switch (filter->inputs[0]->type) {
1217  case AVMEDIA_TYPE_VIDEO:
1218  filtered_frame->pts = frame_pts;
1219  if (!ost->frame_aspect_ratio.num)
1220  enc->sample_aspect_ratio = filtered_frame->sample_aspect_ratio;
1221 
1222  if (debug_ts) {
1223  av_log(NULL, AV_LOG_INFO, "filter -> pts:%s pts_time:%s time_base:%d/%d\n",
1224  av_ts2str(filtered_frame->pts), av_ts2timestr(filtered_frame->pts, &enc->time_base),
1225  enc->time_base.num, enc->time_base.den);
1226  }
1227 
1228  do_video_out(of->ctx, ost, filtered_frame);
1229  break;
1230  case AVMEDIA_TYPE_AUDIO:
1231  filtered_frame->pts = frame_pts;
1232  if (!(enc->codec->capabilities & CODEC_CAP_PARAM_CHANGE) &&
1233  enc->channels != av_frame_get_channels(filtered_frame)) {
1234  av_log(NULL, AV_LOG_ERROR,
1235  "Audio filter graph output is not normalized and encoder does not support parameter changes\n");
1236  break;
1237  }
1238  do_audio_out(of->ctx, ost, filtered_frame);
1239  break;
1240  default:
1241  // TODO support subtitle filters
1242  av_assert0(0);
1243  }
1244 
1245  av_frame_unref(filtered_frame);
1246  }
1247  }
1248 
1249  return 0;
1250 }
1251 
1252 static void print_final_stats(int64_t total_size)
1253 {
1254  uint64_t video_size = 0, audio_size = 0, extra_size = 0, other_size = 0;
1255  uint64_t subtitle_size = 0;
1256  uint64_t data_size = 0;
1257  float percent = -1.0;
1258  int i, j;
1259 
1260  for (i = 0; i < nb_output_streams; i++) {
1261  OutputStream *ost = output_streams[i];
1262  switch (ost->enc_ctx->codec_type) {
1263  case AVMEDIA_TYPE_VIDEO: video_size += ost->data_size; break;
1264  case AVMEDIA_TYPE_AUDIO: audio_size += ost->data_size; break;
1265  case AVMEDIA_TYPE_SUBTITLE: subtitle_size += ost->data_size; break;
1266  default: other_size += ost->data_size; break;
1267  }
1268  extra_size += ost->enc_ctx->extradata_size;
1269  data_size += ost->data_size;
1270  }
1271 
1272  if (data_size && total_size>0 && total_size >= data_size)
1273  percent = 100.0 * (total_size - data_size) / data_size;
1274 
1275  av_log(NULL, AV_LOG_INFO, "\n");
1276  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: ",
1277  video_size / 1024.0,
1278  audio_size / 1024.0,
1279  subtitle_size / 1024.0,
1280  other_size / 1024.0,
1281  extra_size / 1024.0);
1282  if (percent >= 0.0)
1283  av_log(NULL, AV_LOG_INFO, "%f%%", percent);
1284  else
1285  av_log(NULL, AV_LOG_INFO, "unknown");
1286  av_log(NULL, AV_LOG_INFO, "\n");
1287 
1288  /* print verbose per-stream stats */
1289  for (i = 0; i < nb_input_files; i++) {
1290  InputFile *f = input_files[i];
1291  uint64_t total_packets = 0, total_size = 0;
1292 
1293  av_log(NULL, AV_LOG_VERBOSE, "Input file #%d (%s):\n",
1294  i, f->ctx->filename);
1295 
1296  for (j = 0; j < f->nb_streams; j++) {
1297  InputStream *ist = input_streams[f->ist_index + j];
1298  enum AVMediaType type = ist->dec_ctx->codec_type;
1299 
1300  total_size += ist->data_size;
1301  total_packets += ist->nb_packets;
1302 
1303  av_log(NULL, AV_LOG_VERBOSE, " Input stream #%d:%d (%s): ",
1304  i, j, media_type_string(type));
1305  av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" packets read (%"PRIu64" bytes); ",
1306  ist->nb_packets, ist->data_size);
1307 
1308  if (ist->decoding_needed) {
1309  av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" frames decoded",
1310  ist->frames_decoded);
1311  if (type == AVMEDIA_TYPE_AUDIO)
1312  av_log(NULL, AV_LOG_VERBOSE, " (%"PRIu64" samples)", ist->samples_decoded);
1313  av_log(NULL, AV_LOG_VERBOSE, "; ");
1314  }
1315 
1316  av_log(NULL, AV_LOG_VERBOSE, "\n");
1317  }
1318 
1319  av_log(NULL, AV_LOG_VERBOSE, " Total: %"PRIu64" packets (%"PRIu64" bytes) demuxed\n",
1320  total_packets, total_size);
1321  }
1322 
1323  for (i = 0; i < nb_output_files; i++) {
1324  OutputFile *of = output_files[i];
1325  uint64_t total_packets = 0, total_size = 0;
1326 
1327  av_log(NULL, AV_LOG_VERBOSE, "Output file #%d (%s):\n",
1328  i, of->ctx->filename);
1329 
1330  for (j = 0; j < of->ctx->nb_streams; j++) {
1331  OutputStream *ost = output_streams[of->ost_index + j];
1332  enum AVMediaType type = ost->enc_ctx->codec_type;
1333 
1334  total_size += ost->data_size;
1335  total_packets += ost->packets_written;
1336 
1337  av_log(NULL, AV_LOG_VERBOSE, " Output stream #%d:%d (%s): ",
1338  i, j, media_type_string(type));
1339  if (ost->encoding_needed) {
1340  av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" frames encoded",
1341  ost->frames_encoded);
1342  if (type == AVMEDIA_TYPE_AUDIO)
1343  av_log(NULL, AV_LOG_VERBOSE, " (%"PRIu64" samples)", ost->samples_encoded);
1344  av_log(NULL, AV_LOG_VERBOSE, "; ");
1345  }
1346 
1347  av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" packets muxed (%"PRIu64" bytes); ",
1348  ost->packets_written, ost->data_size);
1349 
1350  av_log(NULL, AV_LOG_VERBOSE, "\n");
1351  }
1352 
1353  av_log(NULL, AV_LOG_VERBOSE, " Total: %"PRIu64" packets (%"PRIu64" bytes) muxed\n",
1354  total_packets, total_size);
1355  }
1356  if(video_size + data_size + audio_size + subtitle_size + extra_size == 0){
1357  av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)\n");
1358  }
1359 }
1360 
1361 static void print_report(int is_last_report, int64_t timer_start, int64_t cur_time)
1362 {
1363  char buf[1024];
1364  AVBPrint buf_script;
1365  OutputStream *ost;
1366  AVFormatContext *oc;
1367  int64_t total_size;
1368  AVCodecContext *enc;
1369  int frame_number, vid, i;
1370  double bitrate;
1371  int64_t pts = INT64_MIN;
1372  static int64_t last_time = -1;
1373  static int qp_histogram[52];
1374  int hours, mins, secs, us;
1375 
1376  if (!print_stats && !is_last_report && !progress_avio)
1377  return;
1378 
1379  if (!is_last_report) {
1380  if (last_time == -1) {
1381  last_time = cur_time;
1382  return;
1383  }
1384  if ((cur_time - last_time) < 500000)
1385  return;
1386  last_time = cur_time;
1387  }
1388 
1389 
1390  oc = output_files[0]->ctx;
1391 
1392  total_size = avio_size(oc->pb);
1393  if (total_size <= 0) // FIXME improve avio_size() so it works with non seekable output too
1394  total_size = avio_tell(oc->pb);
1395 
1396  buf[0] = '\0';
1397  vid = 0;
1398  av_bprint_init(&buf_script, 0, 1);
1399  for (i = 0; i < nb_output_streams; i++) {
1400  float q = -1;
1401  ost = output_streams[i];
1402  enc = ost->enc_ctx;
1403  if (!ost->stream_copy && enc->coded_frame)
1404  q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
1405  if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1406  snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1407  av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1408  ost->file_index, ost->index, q);
1409  }
1410  if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1411  float fps, t = (cur_time-timer_start) / 1000000.0;
1412 
1413  frame_number = ost->frame_number;
1414  fps = t > 1 ? frame_number / t : 0;
1415  snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3.*f q=%3.1f ",
1416  frame_number, fps < 9.95, fps, q);
1417  av_bprintf(&buf_script, "frame=%d\n", frame_number);
1418  av_bprintf(&buf_script, "fps=%.1f\n", fps);
1419  av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1420  ost->file_index, ost->index, q);
1421  if (is_last_report)
1422  snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1423  if (qp_hist) {
1424  int j;
1425  int qp = lrintf(q);
1426  if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
1427  qp_histogram[qp]++;
1428  for (j = 0; j < 32; j++)
1429  snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log2(qp_histogram[j] + 1)));
1430  }
1431  if ((enc->flags&CODEC_FLAG_PSNR) && (enc->coded_frame || is_last_report)) {
1432  int j;
1433  double error, error_sum = 0;
1434  double scale, scale_sum = 0;
1435  double p;
1436  char type[3] = { 'Y','U','V' };
1437  snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1438  for (j = 0; j < 3; j++) {
1439  if (is_last_report) {
1440  error = enc->error[j];
1441  scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
1442  } else {
1443  error = enc->coded_frame->error[j];
1444  scale = enc->width * enc->height * 255.0 * 255.0;
1445  }
1446  if (j)
1447  scale /= 4;
1448  error_sum += error;
1449  scale_sum += scale;
1450  p = psnr(error / scale);
1451  snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], p);
1452  av_bprintf(&buf_script, "stream_%d_%d_psnr_%c=%2.2f\n",
1453  ost->file_index, ost->index, type[j] | 32, p);
1454  }
1455  p = psnr(error_sum / scale_sum);
1456  snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
1457  av_bprintf(&buf_script, "stream_%d_%d_psnr_all=%2.2f\n",
1458  ost->file_index, ost->index, p);
1459  }
1460  vid = 1;
1461  }
1462  /* compute min output value */
1464  pts = FFMAX(pts, av_rescale_q(av_stream_get_end_pts(ost->st),
1465  ost->st->time_base, AV_TIME_BASE_Q));
1466  }
1467 
1468  secs = pts / AV_TIME_BASE;
1469  us = pts % AV_TIME_BASE;
1470  mins = secs / 60;
1471  secs %= 60;
1472  hours = mins / 60;
1473  mins %= 60;
1474 
1475  bitrate = pts && total_size >= 0 ? total_size * 8 / (pts / 1000.0) : -1;
1476 
1477  if (total_size < 0) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1478  "size=N/A time=");
1479  else snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1480  "size=%8.0fkB time=", total_size / 1024.0);
1481  snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1482  "%02d:%02d:%02d.%02d ", hours, mins, secs,
1483  (100 * us) / AV_TIME_BASE);
1484  if (bitrate < 0) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1485  "bitrate=N/A");
1486  else snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1487  "bitrate=%6.1fkbits/s", bitrate);
1488  if (total_size < 0) av_bprintf(&buf_script, "total_size=N/A\n");
1489  else av_bprintf(&buf_script, "total_size=%"PRId64"\n", total_size);
1490  av_bprintf(&buf_script, "out_time_ms=%"PRId64"\n", pts);
1491  av_bprintf(&buf_script, "out_time=%02d:%02d:%02d.%06d\n",
1492  hours, mins, secs, us);
1493 
1495  snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1497  av_bprintf(&buf_script, "dup_frames=%d\n", nb_frames_dup);
1498  av_bprintf(&buf_script, "drop_frames=%d\n", nb_frames_drop);
1499 
1500  if (print_stats || is_last_report) {
1501  if (print_stats==1 && AV_LOG_INFO > av_log_get_level()) {
1502  fprintf(stderr, "%s \r", buf);
1503  } else
1504  av_log(NULL, AV_LOG_INFO, "%s \r", buf);
1505 
1506  fflush(stderr);
1507  }
1508 
1509  if (progress_avio) {
1510  av_bprintf(&buf_script, "progress=%s\n",
1511  is_last_report ? "end" : "continue");
1512  avio_write(progress_avio, buf_script.str,
1513  FFMIN(buf_script.len, buf_script.size - 1));
1514  avio_flush(progress_avio);
1515  av_bprint_finalize(&buf_script, NULL);
1516  if (is_last_report) {
1517  avio_close(progress_avio);
1518  progress_avio = NULL;
1519  }
1520  }
1521 
1522  if (is_last_report)
1523  print_final_stats(total_size);
1524 }
1525 
1526 static void flush_encoders(void)
1527 {
1528  int i, ret;
1529 
1530  for (i = 0; i < nb_output_streams; i++) {
1531  OutputStream *ost = output_streams[i];
1532  AVCodecContext *enc = ost->enc_ctx;
1533  AVFormatContext *os = output_files[ost->file_index]->ctx;
1534  int stop_encoding = 0;
1535 
1536  if (!ost->encoding_needed)
1537  continue;
1538 
1539  if (enc->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
1540  continue;
1542  continue;
1543 
1544  for (;;) {
1545  int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL;
1546  const char *desc;
1547 
1548  switch (enc->codec_type) {
1549  case AVMEDIA_TYPE_AUDIO:
1550  encode = avcodec_encode_audio2;
1551  desc = "Audio";
1552  break;
1553  case AVMEDIA_TYPE_VIDEO:
1554  encode = avcodec_encode_video2;
1555  desc = "Video";
1556  break;
1557  default:
1558  stop_encoding = 1;
1559  }
1560 
1561  if (encode) {
1562  AVPacket pkt;
1563  int pkt_size;
1564  int got_packet;
1565  av_init_packet(&pkt);
1566  pkt.data = NULL;
1567  pkt.size = 0;
1568 
1569  update_benchmark(NULL);
1570  ret = encode(enc, &pkt, NULL, &got_packet);
1571  update_benchmark("flush %s %d.%d", desc, ost->file_index, ost->index);
1572  if (ret < 0) {
1573  av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
1574  exit_program(1);
1575  }
1576  if (ost->logfile && enc->stats_out) {
1577  fprintf(ost->logfile, "%s", enc->stats_out);
1578  }
1579  if (!got_packet) {
1580  stop_encoding = 1;
1581  break;
1582  }
1583  if (ost->finished & MUXER_FINISHED) {
1584  av_free_packet(&pkt);
1585  continue;
1586  }
1587  av_packet_rescale_ts(&pkt, enc->time_base, ost->st->time_base);
1588  pkt_size = pkt.size;
1589  write_frame(os, &pkt, ost);
1591  do_video_stats(ost, pkt_size);
1592  }
1593  }
1594 
1595  if (stop_encoding)
1596  break;
1597  }
1598  }
1599 }
1600 
1601 /*
1602  * Check whether a packet from ist should be written into ost at this time
1603  */
1605 {
1606  OutputFile *of = output_files[ost->file_index];
1607  int ist_index = input_files[ist->file_index]->ist_index + ist->st->index;
1608 
1609  if (ost->source_index != ist_index)
1610  return 0;
1611 
1612  if (ost->finished)
1613  return 0;
1614 
1615  if (of->start_time != AV_NOPTS_VALUE && ist->pts < of->start_time)
1616  return 0;
1617 
1618  return 1;
1619 }
1620 
1621 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1622 {
1623  OutputFile *of = output_files[ost->file_index];
1624  InputFile *f = input_files [ist->file_index];
1625  int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time;
1626  int64_t ost_tb_start_time = av_rescale_q(start_time, AV_TIME_BASE_Q, ost->st->time_base);
1627  int64_t ist_tb_start_time = av_rescale_q(start_time, AV_TIME_BASE_Q, ist->st->time_base);
1628  AVPicture pict;
1629  AVPacket opkt;
1630 
1631  av_init_packet(&opkt);
1632 
1633  if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1635  return;
1636 
1637  if (pkt->pts == AV_NOPTS_VALUE) {
1638  if (!ost->frame_number && ist->pts < start_time &&
1639  !ost->copy_prior_start)
1640  return;
1641  } else {
1642  if (!ost->frame_number && pkt->pts < ist_tb_start_time &&
1643  !ost->copy_prior_start)
1644  return;
1645  }
1646 
1647  if (of->recording_time != INT64_MAX &&
1648  ist->pts >= of->recording_time + start_time) {
1649  close_output_stream(ost);
1650  return;
1651  }
1652 
1653  if (f->recording_time != INT64_MAX) {
1654  start_time = f->ctx->start_time;
1655  if (f->start_time != AV_NOPTS_VALUE)
1656  start_time += f->start_time;
1657  if (ist->pts >= f->recording_time + start_time) {
1658  close_output_stream(ost);
1659  return;
1660  }
1661  }
1662 
1663  /* force the input stream PTS */
1664  if (ost->enc_ctx->codec_type == AVMEDIA_TYPE_VIDEO)
1665  ost->sync_opts++;
1666 
1667  if (pkt->pts != AV_NOPTS_VALUE)
1668  opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1669  else
1670  opkt.pts = AV_NOPTS_VALUE;
1671 
1672  if (pkt->dts == AV_NOPTS_VALUE)
1673  opkt.dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ost->st->time_base);
1674  else
1675  opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1676  opkt.dts -= ost_tb_start_time;
1677 
1678  if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && pkt->dts != AV_NOPTS_VALUE) {
1680  if(!duration)
1681  duration = ist->dec_ctx->frame_size;
1682  opkt.dts = opkt.pts = av_rescale_delta(ist->st->time_base, pkt->dts,
1684  ost->st->time_base) - ost_tb_start_time;
1685  }
1686 
1687  opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1688  opkt.flags = pkt->flags;
1689 
1690  // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1691  if ( ost->enc_ctx->codec_id != AV_CODEC_ID_H264
1692  && ost->enc_ctx->codec_id != AV_CODEC_ID_MPEG1VIDEO
1693  && ost->enc_ctx->codec_id != AV_CODEC_ID_MPEG2VIDEO
1694  && ost->enc_ctx->codec_id != AV_CODEC_ID_VC1
1695  ) {
1696  if (av_parser_change(ost->parser, ost->st->codec,
1697  &opkt.data, &opkt.size,
1698  pkt->data, pkt->size,
1699  pkt->flags & AV_PKT_FLAG_KEY)) {
1700  opkt.buf = av_buffer_create(opkt.data, opkt.size, av_buffer_default_free, NULL, 0);
1701  if (!opkt.buf)
1702  exit_program(1);
1703  }
1704  } else {
1705  opkt.data = pkt->data;
1706  opkt.size = pkt->size;
1707  }
1708  av_copy_packet_side_data(&opkt, pkt);
1709 
1710  if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (of->ctx->oformat->flags & AVFMT_RAWPICTURE)) {
1711  /* store AVPicture in AVPacket, as expected by the output format */
1712  avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
1713  opkt.data = (uint8_t *)&pict;
1714  opkt.size = sizeof(AVPicture);
1715  opkt.flags |= AV_PKT_FLAG_KEY;
1716  }
1717 
1718  write_frame(of->ctx, &opkt, ost);
1719 }
1720 
1722 {
1723  AVCodecContext *dec = ist->dec_ctx;
1724 
1725  if (!dec->channel_layout) {
1726  char layout_name[256];
1727 
1728  if (dec->channels > ist->guess_layout_max)
1729  return 0;
1731  if (!dec->channel_layout)
1732  return 0;
1733  av_get_channel_layout_string(layout_name, sizeof(layout_name),
1734  dec->channels, dec->channel_layout);
1735  av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for Input Stream "
1736  "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
1737  }
1738  return 1;
1739 }
1740 
1741 static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1742 {
1743  AVFrame *decoded_frame, *f;
1744  AVCodecContext *avctx = ist->dec_ctx;
1745  int i, ret, err = 0, resample_changed;
1746  AVRational decoded_frame_tb;
1747 
1748  if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
1749  return AVERROR(ENOMEM);
1750  if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
1751  return AVERROR(ENOMEM);
1752  decoded_frame = ist->decoded_frame;
1753 
1754  update_benchmark(NULL);
1755  ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
1756  update_benchmark("decode_audio %d.%d", ist->file_index, ist->st->index);
1757 
1758  if (ret >= 0 && avctx->sample_rate <= 0) {
1759  av_log(avctx, AV_LOG_ERROR, "Sample rate %d invalid\n", avctx->sample_rate);
1760  ret = AVERROR_INVALIDDATA;
1761  }
1762 
1763  if (*got_output || ret<0 || pkt->size)
1764  decode_error_stat[ret<0] ++;
1765 
1766  if (!*got_output || ret < 0) {
1767  if (!pkt->size) {
1768  for (i = 0; i < ist->nb_filters; i++)
1769 #if 1
1770  av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1771 #else
1772  av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
1773 #endif
1774  }
1775  return ret;
1776  }
1777 
1778  ist->samples_decoded += decoded_frame->nb_samples;
1779  ist->frames_decoded++;
1780 
1781 #if 1
1782  /* increment next_dts to use for the case where the input stream does not
1783  have timestamps or there are multiple frames in the packet */
1784  ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1785  avctx->sample_rate;
1786  ist->next_dts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1787  avctx->sample_rate;
1788 #endif
1789 
1790  resample_changed = ist->resample_sample_fmt != decoded_frame->format ||
1791  ist->resample_channels != avctx->channels ||
1792  ist->resample_channel_layout != decoded_frame->channel_layout ||
1793  ist->resample_sample_rate != decoded_frame->sample_rate;
1794  if (resample_changed) {
1795  char layout1[64], layout2[64];
1796 
1797  if (!guess_input_channel_layout(ist)) {
1798  av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
1799  "layout for Input Stream #%d.%d\n", ist->file_index,
1800  ist->st->index);
1801  exit_program(1);
1802  }
1803  decoded_frame->channel_layout = avctx->channel_layout;
1804 
1805  av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels,
1807  av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels,
1808  decoded_frame->channel_layout);
1809 
1810  av_log(NULL, AV_LOG_INFO,
1811  "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",
1812  ist->file_index, ist->st->index,
1814  ist->resample_channels, layout1,
1815  decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format),
1816  avctx->channels, layout2);
1817 
1818  ist->resample_sample_fmt = decoded_frame->format;
1819  ist->resample_sample_rate = decoded_frame->sample_rate;
1820  ist->resample_channel_layout = decoded_frame->channel_layout;
1821  ist->resample_channels = avctx->channels;
1822 
1823  for (i = 0; i < nb_filtergraphs; i++)
1824  if (ist_in_filtergraph(filtergraphs[i], ist)) {
1825  FilterGraph *fg = filtergraphs[i];
1826  if (configure_filtergraph(fg) < 0) {
1827  av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1828  exit_program(1);
1829  }
1830  }
1831  }
1832 
1833  /* if the decoder provides a pts, use it instead of the last packet pts.
1834  the decoder could be delaying output by a packet or more. */
1835  if (decoded_frame->pts != AV_NOPTS_VALUE) {
1836  ist->dts = ist->next_dts = ist->pts = ist->next_pts = av_rescale_q(decoded_frame->pts, avctx->time_base, AV_TIME_BASE_Q);
1837  decoded_frame_tb = avctx->time_base;
1838  } else if (decoded_frame->pkt_pts != AV_NOPTS_VALUE) {
1839  decoded_frame->pts = decoded_frame->pkt_pts;
1840  decoded_frame_tb = ist->st->time_base;
1841  } else if (pkt->pts != AV_NOPTS_VALUE) {
1842  decoded_frame->pts = pkt->pts;
1843  decoded_frame_tb = ist->st->time_base;
1844  }else {
1845  decoded_frame->pts = ist->dts;
1846  decoded_frame_tb = AV_TIME_BASE_Q;
1847  }
1848  pkt->pts = AV_NOPTS_VALUE;
1849  if (decoded_frame->pts != AV_NOPTS_VALUE)
1850  decoded_frame->pts = av_rescale_delta(decoded_frame_tb, decoded_frame->pts,
1851  (AVRational){1, avctx->sample_rate}, decoded_frame->nb_samples, &ist->filter_in_rescale_delta_last,
1852  (AVRational){1, avctx->sample_rate});
1853  for (i = 0; i < ist->nb_filters; i++) {
1854  if (i < ist->nb_filters - 1) {
1855  f = ist->filter_frame;
1856  err = av_frame_ref(f, decoded_frame);
1857  if (err < 0)
1858  break;
1859  } else
1860  f = decoded_frame;
1861  err = av_buffersrc_add_frame_flags(ist->filters[i]->filter, f,
1863  if (err == AVERROR_EOF)
1864  err = 0; /* ignore */
1865  if (err < 0)
1866  break;
1867  }
1868  decoded_frame->pts = AV_NOPTS_VALUE;
1869 
1870  av_frame_unref(ist->filter_frame);
1871  av_frame_unref(decoded_frame);
1872  return err < 0 ? err : ret;
1873 }
1874 
1875 static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output)
1876 {
1877  AVFrame *decoded_frame, *f;
1878  int i, ret = 0, err = 0, resample_changed;
1879  int64_t best_effort_timestamp;
1880  AVRational *frame_sample_aspect;
1881 
1882  if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
1883  return AVERROR(ENOMEM);
1884  if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
1885  return AVERROR(ENOMEM);
1886  decoded_frame = ist->decoded_frame;
1887  pkt->dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
1888 
1889  update_benchmark(NULL);
1890  ret = avcodec_decode_video2(ist->dec_ctx,
1891  decoded_frame, got_output, pkt);
1892  update_benchmark("decode_video %d.%d", ist->file_index, ist->st->index);
1893 
1894  // The following line may be required in some cases where there is no parser
1895  // or the parser does not has_b_frames correctly
1896  if (ist->st->codec->has_b_frames < ist->dec_ctx->has_b_frames) {
1897  if (ist->dec_ctx->codec_id == AV_CODEC_ID_H264) {
1898  ist->st->codec->has_b_frames = ist->dec_ctx->has_b_frames;
1899  } else
1901  ist->dec_ctx,
1902  "has_b_frames is larger in decoder than demuxer %d > %d ",
1903  ist->dec_ctx->has_b_frames,
1904  ist->st->codec->has_b_frames
1905  );
1906  }
1907 
1908  if (*got_output || ret<0 || pkt->size)
1909  decode_error_stat[ret<0] ++;
1910 
1911  if (!*got_output || ret < 0) {
1912  if (!pkt->size) {
1913  for (i = 0; i < ist->nb_filters; i++)
1914 #if 1
1915  av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1916 #else
1917  av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
1918 #endif
1919  }
1920  return ret;
1921  }
1922 
1923  if(ist->top_field_first>=0)
1924  decoded_frame->top_field_first = ist->top_field_first;
1925 
1926  ist->frames_decoded++;
1927 
1928  if (ist->hwaccel_retrieve_data && decoded_frame->format == ist->hwaccel_pix_fmt) {
1929  err = ist->hwaccel_retrieve_data(ist->dec_ctx, decoded_frame);
1930  if (err < 0)
1931  goto fail;
1932  }
1933  ist->hwaccel_retrieved_pix_fmt = decoded_frame->format;
1934 
1935  best_effort_timestamp= av_frame_get_best_effort_timestamp(decoded_frame);
1936  if(best_effort_timestamp != AV_NOPTS_VALUE)
1937  ist->next_pts = ist->pts = av_rescale_q(decoded_frame->pts = best_effort_timestamp, ist->st->time_base, AV_TIME_BASE_Q);
1938 
1939  if (debug_ts) {
1940  av_log(NULL, AV_LOG_INFO, "decoder -> ist_index:%d type:video "
1941  "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",
1942  ist->st->index, av_ts2str(decoded_frame->pts),
1943  av_ts2timestr(decoded_frame->pts, &ist->st->time_base),
1944  best_effort_timestamp,
1945  av_ts2timestr(best_effort_timestamp, &ist->st->time_base),
1946  decoded_frame->key_frame, decoded_frame->pict_type,
1947  ist->st->time_base.num, ist->st->time_base.den);
1948  }
1949 
1950  pkt->size = 0;
1951 
1952  if (ist->st->sample_aspect_ratio.num)
1953  decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
1954 
1955  resample_changed = ist->resample_width != decoded_frame->width ||
1956  ist->resample_height != decoded_frame->height ||
1957  ist->resample_pix_fmt != decoded_frame->format;
1958  if (resample_changed) {
1959  av_log(NULL, AV_LOG_INFO,
1960  "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1961  ist->file_index, ist->st->index,
1963  decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
1964 
1965  ist->resample_width = decoded_frame->width;
1966  ist->resample_height = decoded_frame->height;
1967  ist->resample_pix_fmt = decoded_frame->format;
1968 
1969  for (i = 0; i < nb_filtergraphs; i++) {
1970  if (ist_in_filtergraph(filtergraphs[i], ist) && ist->reinit_filters &&
1971  configure_filtergraph(filtergraphs[i]) < 0) {
1972  av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1973  exit_program(1);
1974  }
1975  }
1976  }
1977 
1978  frame_sample_aspect= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "sample_aspect_ratio");
1979  for (i = 0; i < ist->nb_filters; i++) {
1980  if (!frame_sample_aspect->num)
1981  *frame_sample_aspect = ist->st->sample_aspect_ratio;
1982 
1983  if (i < ist->nb_filters - 1) {
1984  f = ist->filter_frame;
1985  err = av_frame_ref(f, decoded_frame);
1986  if (err < 0)
1987  break;
1988  } else
1989  f = decoded_frame;
1991  if (ret == AVERROR_EOF) {
1992  ret = 0; /* ignore */
1993  } else if (ret < 0) {
1994  av_log(NULL, AV_LOG_FATAL,
1995  "Failed to inject frame into filter network: %s\n", av_err2str(ret));
1996  exit_program(1);
1997  }
1998  }
1999 
2000 fail:
2002  av_frame_unref(decoded_frame);
2003  return err < 0 ? err : ret;
2004 }
2005 
2006 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
2007 {
2008  AVSubtitle subtitle;
2009  int i, ret = avcodec_decode_subtitle2(ist->dec_ctx,
2010  &subtitle, got_output, pkt);
2011 
2012  if (*got_output || ret<0 || pkt->size)
2013  decode_error_stat[ret<0] ++;
2014 
2015  if (ret < 0 || !*got_output) {
2016  if (!pkt->size)
2017  sub2video_flush(ist);
2018  return ret;
2019  }
2020 
2021  if (ist->fix_sub_duration) {
2022  int end = 1;
2023  if (ist->prev_sub.got_output) {
2024  end = av_rescale(subtitle.pts - ist->prev_sub.subtitle.pts,
2025  1000, AV_TIME_BASE);
2026  if (end < ist->prev_sub.subtitle.end_display_time) {
2027  av_log(ist->dec_ctx, AV_LOG_DEBUG,
2028  "Subtitle duration reduced from %d to %d%s\n",
2030  end <= 0 ? ", dropping it" : "");
2032  }
2033  }
2034  FFSWAP(int, *got_output, ist->prev_sub.got_output);
2035  FFSWAP(int, ret, ist->prev_sub.ret);
2036  FFSWAP(AVSubtitle, subtitle, ist->prev_sub.subtitle);
2037  if (end <= 0)
2038  goto out;
2039  }
2040 
2041  if (!*got_output)
2042  return ret;
2043 
2044  sub2video_update(ist, &subtitle);
2045 
2046  if (!subtitle.num_rects)
2047  goto out;
2048 
2049  ist->frames_decoded++;
2050 
2051  for (i = 0; i < nb_output_streams; i++) {
2052  OutputStream *ost = output_streams[i];
2053 
2054  if (!check_output_constraints(ist, ost) || !ost->encoding_needed
2055  || ost->enc->type != AVMEDIA_TYPE_SUBTITLE)
2056  continue;
2057 
2058  do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle);
2059  }
2060 
2061 out:
2062  avsubtitle_free(&subtitle);
2063  return ret;
2064 }
2065 
2066 /* pkt = NULL means EOF (needed to flush decoder buffers) */
2068 {
2069  int ret = 0, i;
2070  int got_output = 0;
2071 
2072  AVPacket avpkt;
2073  if (!ist->saw_first_ts) {
2074  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;
2075  ist->pts = 0;
2076  if (pkt && pkt->pts != AV_NOPTS_VALUE && !ist->decoding_needed) {
2077  ist->dts += av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
2078  ist->pts = ist->dts; //unused but better to set it to a value thats not totally wrong
2079  }
2080  ist->saw_first_ts = 1;
2081  }
2082 
2083  if (ist->next_dts == AV_NOPTS_VALUE)
2084  ist->next_dts = ist->dts;
2085  if (ist->next_pts == AV_NOPTS_VALUE)
2086  ist->next_pts = ist->pts;
2087 
2088  if (!pkt) {
2089  /* EOF handling */
2090  av_init_packet(&avpkt);
2091  avpkt.data = NULL;
2092  avpkt.size = 0;
2093  goto handle_eof;
2094  } else {
2095  avpkt = *pkt;
2096  }
2097 
2098  if (pkt->dts != AV_NOPTS_VALUE) {
2099  ist->next_dts = ist->dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
2100  if (ist->dec_ctx->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
2101  ist->next_pts = ist->pts = ist->dts;
2102  }
2103 
2104  // while we have more to decode or while the decoder did output something on EOF
2105  while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
2106  int duration;
2107  handle_eof:
2108 
2109  ist->pts = ist->next_pts;
2110  ist->dts = ist->next_dts;
2111 
2112  if (avpkt.size && avpkt.size != pkt->size &&
2113  !(ist->dec->capabilities & CODEC_CAP_SUBFRAMES)) {
2115  "Multiple frames in a packet from stream %d\n", pkt->stream_index);
2116  ist->showed_multi_packet_warning = 1;
2117  }
2118 
2119  switch (ist->dec_ctx->codec_type) {
2120  case AVMEDIA_TYPE_AUDIO:
2121  ret = decode_audio (ist, &avpkt, &got_output);
2122  break;
2123  case AVMEDIA_TYPE_VIDEO:
2124  ret = decode_video (ist, &avpkt, &got_output);
2125  if (avpkt.duration) {
2126  duration = av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
2127  } else if(ist->dec_ctx->time_base.num != 0 && ist->dec_ctx->time_base.den != 0) {
2129  duration = ((int64_t)AV_TIME_BASE *
2130  ist->dec_ctx->time_base.num * ticks) /
2131  ist->dec_ctx->time_base.den;
2132  } else
2133  duration = 0;
2134 
2135  if(ist->dts != AV_NOPTS_VALUE && duration) {
2136  ist->next_dts += duration;
2137  }else
2138  ist->next_dts = AV_NOPTS_VALUE;
2139 
2140  if (got_output)
2141  ist->next_pts += duration; //FIXME the duration is not correct in some cases
2142  break;
2143  case AVMEDIA_TYPE_SUBTITLE:
2144  ret = transcode_subtitles(ist, &avpkt, &got_output);
2145  break;
2146  default:
2147  return -1;
2148  }
2149 
2150  if (ret < 0)
2151  return ret;
2152 
2153  avpkt.dts=
2154  avpkt.pts= AV_NOPTS_VALUE;
2155 
2156  // touch data and size only if not EOF
2157  if (pkt) {
2159  ret = avpkt.size;
2160  avpkt.data += ret;
2161  avpkt.size -= ret;
2162  }
2163  if (!got_output) {
2164  continue;
2165  }
2166  if (got_output && !pkt)
2167  break;
2168  }
2169 
2170  /* handle stream copy */
2171  if (!ist->decoding_needed) {
2172  ist->dts = ist->next_dts;
2173  switch (ist->dec_ctx->codec_type) {
2174  case AVMEDIA_TYPE_AUDIO:
2175  ist->next_dts += ((int64_t)AV_TIME_BASE * ist->dec_ctx->frame_size) /
2176  ist->dec_ctx->sample_rate;
2177  break;
2178  case AVMEDIA_TYPE_VIDEO:
2179  if (ist->framerate.num) {
2180  // TODO: Remove work-around for c99-to-c89 issue 7
2181  AVRational time_base_q = AV_TIME_BASE_Q;
2182  int64_t next_dts = av_rescale_q(ist->next_dts, time_base_q, av_inv_q(ist->framerate));
2183  ist->next_dts = av_rescale_q(next_dts + 1, av_inv_q(ist->framerate), time_base_q);
2184  } else if (pkt->duration) {
2185  ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
2186  } else if(ist->dec_ctx->time_base.num != 0) {
2187  int ticks= av_stream_get_parser(ist->st) ? av_stream_get_parser(ist->st)->repeat_pict + 1 : ist->dec_ctx->ticks_per_frame;
2188  ist->next_dts += ((int64_t)AV_TIME_BASE *
2189  ist->dec_ctx->time_base.num * ticks) /
2190  ist->dec_ctx->time_base.den;
2191  }
2192  break;
2193  }
2194  ist->pts = ist->dts;
2195  ist->next_pts = ist->next_dts;
2196  }
2197  for (i = 0; pkt && i < nb_output_streams; i++) {
2198  OutputStream *ost = output_streams[i];
2199 
2200  if (!check_output_constraints(ist, ost) || ost->encoding_needed)
2201  continue;
2202 
2203  do_streamcopy(ist, ost, pkt);
2204  }
2205 
2206  return got_output;
2207 }
2208 
2209 static void print_sdp(void)
2210 {
2211  char sdp[16384];
2212  int i;
2213  AVFormatContext **avc = av_malloc_array(nb_output_files, sizeof(*avc));
2214 
2215  if (!avc)
2216  exit_program(1);
2217  for (i = 0; i < nb_output_files; i++)
2218  avc[i] = output_files[i]->ctx;
2219 
2220  av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
2221  printf("SDP:\n%s\n", sdp);
2222  fflush(stdout);
2223  av_freep(&avc);
2224 }
2225 
2227 {
2228  int i;
2229  for (i = 0; hwaccels[i].name; i++)
2230  if (hwaccels[i].pix_fmt == pix_fmt)
2231  return &hwaccels[i];
2232  return NULL;
2233 }
2234 
2235 static enum AVPixelFormat get_format(AVCodecContext *s, const enum AVPixelFormat *pix_fmts)
2236 {
2237  InputStream *ist = s->opaque;
2238  const enum AVPixelFormat *p;
2239  int ret;
2240 
2241  for (p = pix_fmts; *p != -1; p++) {
2242  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(*p);
2243  const HWAccel *hwaccel;
2244 
2245  if (!(desc->flags & AV_PIX_FMT_FLAG_HWACCEL))
2246  break;
2247 
2248  hwaccel = get_hwaccel(*p);
2249  if (!hwaccel ||
2250  (ist->active_hwaccel_id && ist->active_hwaccel_id != hwaccel->id) ||
2251  (ist->hwaccel_id != HWACCEL_AUTO && ist->hwaccel_id != hwaccel->id))
2252  continue;
2253 
2254  ret = hwaccel->init(s);
2255  if (ret < 0) {
2256  if (ist->hwaccel_id == hwaccel->id) {
2257  av_log(NULL, AV_LOG_FATAL,
2258  "%s hwaccel requested for input stream #%d:%d, "
2259  "but cannot be initialized.\n", hwaccel->name,
2260  ist->file_index, ist->st->index);
2261  exit_program(1);
2262  }
2263  continue;
2264  }
2265  ist->active_hwaccel_id = hwaccel->id;
2266  ist->hwaccel_pix_fmt = *p;
2267  break;
2268  }
2269 
2270  return *p;
2271 }
2272 
2274 {
2275  InputStream *ist = s->opaque;
2276 
2277  if (ist->hwaccel_get_buffer && frame->format == ist->hwaccel_pix_fmt)
2278  return ist->hwaccel_get_buffer(s, frame, flags);
2279 
2280  return avcodec_default_get_buffer2(s, frame, flags);
2281 }
2282 
2283 static int init_input_stream(int ist_index, char *error, int error_len)
2284 {
2285  int ret;
2286  InputStream *ist = input_streams[ist_index];
2287 
2288  if (ist->decoding_needed) {
2289  AVCodec *codec = ist->dec;
2290  if (!codec) {
2291  snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
2292  avcodec_get_name(ist->dec_ctx->codec_id), ist->file_index, ist->st->index);
2293  return AVERROR(EINVAL);
2294  }
2295 
2296  ist->dec_ctx->opaque = ist;
2297  ist->dec_ctx->get_format = get_format;
2298  ist->dec_ctx->get_buffer2 = get_buffer;
2299  ist->dec_ctx->thread_safe_callbacks = 1;
2300 
2301  av_opt_set_int(ist->dec_ctx, "refcounted_frames", 1, 0);
2302  if (ist->dec_ctx->codec_id == AV_CODEC_ID_DVB_SUBTITLE &&
2303  (ist->decoding_needed & DECODING_FOR_OST)) {
2304  av_dict_set(&ist->decoder_opts, "compute_edt", "1", AV_DICT_DONT_OVERWRITE);
2306  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");
2307  }
2308 
2309  if (!av_dict_get(ist->decoder_opts, "threads", NULL, 0))
2310  av_dict_set(&ist->decoder_opts, "threads", "auto", 0);
2311  if ((ret = avcodec_open2(ist->dec_ctx, codec, &ist->decoder_opts)) < 0) {
2312  if (ret == AVERROR_EXPERIMENTAL)
2313  abort_codec_experimental(codec, 0);
2314 
2315  snprintf(error, error_len,
2316  "Error while opening decoder for input stream "
2317  "#%d:%d : %s",
2318  ist->file_index, ist->st->index, av_err2str(ret));
2319  return ret;
2320  }
2322  }
2323 
2324  ist->next_pts = AV_NOPTS_VALUE;
2325  ist->next_dts = AV_NOPTS_VALUE;
2326 
2327  return 0;
2328 }
2329 
2331 {
2332  if (ost->source_index >= 0)
2333  return input_streams[ost->source_index];
2334  return NULL;
2335 }
2336 
2337 static int compare_int64(const void *a, const void *b)
2338 {
2339  int64_t va = *(int64_t *)a, vb = *(int64_t *)b;
2340  return va < vb ? -1 : va > vb ? +1 : 0;
2341 }
2342 
2343 static void parse_forced_key_frames(char *kf, OutputStream *ost,
2344  AVCodecContext *avctx)
2345 {
2346  char *p;
2347  int n = 1, i, size, index = 0;
2348  int64_t t, *pts;
2349 
2350  for (p = kf; *p; p++)
2351  if (*p == ',')
2352  n++;
2353  size = n;
2354  pts = av_malloc_array(size, sizeof(*pts));
2355  if (!pts) {
2356  av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
2357  exit_program(1);
2358  }
2359 
2360  p = kf;
2361  for (i = 0; i < n; i++) {
2362  char *next = strchr(p, ',');
2363 
2364  if (next)
2365  *next++ = 0;
2366 
2367  if (!memcmp(p, "chapters", 8)) {
2368 
2369  AVFormatContext *avf = output_files[ost->file_index]->ctx;
2370  int j;
2371 
2372  if (avf->nb_chapters > INT_MAX - size ||
2373  !(pts = av_realloc_f(pts, size += avf->nb_chapters - 1,
2374  sizeof(*pts)))) {
2375  av_log(NULL, AV_LOG_FATAL,
2376  "Could not allocate forced key frames array.\n");
2377  exit_program(1);
2378  }
2379  t = p[8] ? parse_time_or_die("force_key_frames", p + 8, 1) : 0;
2380  t = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
2381 
2382  for (j = 0; j < avf->nb_chapters; j++) {
2383  AVChapter *c = avf->chapters[j];
2384  av_assert1(index < size);
2385  pts[index++] = av_rescale_q(c->start, c->time_base,
2386  avctx->time_base) + t;
2387  }
2388 
2389  } else {
2390 
2391  t = parse_time_or_die("force_key_frames", p, 1);
2392  av_assert1(index < size);
2393  pts[index++] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
2394 
2395  }
2396 
2397  p = next;
2398  }
2399 
2400  av_assert0(index == size);
2401  qsort(pts, size, sizeof(*pts), compare_int64);
2402  ost->forced_kf_count = size;
2403  ost->forced_kf_pts = pts;
2404 }
2405 
2406 static void report_new_stream(int input_index, AVPacket *pkt)
2407 {
2408  InputFile *file = input_files[input_index];
2409  AVStream *st = file->ctx->streams[pkt->stream_index];
2410 
2411  if (pkt->stream_index < file->nb_streams_warn)
2412  return;
2413  av_log(file->ctx, AV_LOG_WARNING,
2414  "New %s stream %d:%d at pos:%"PRId64" and DTS:%ss\n",
2416  input_index, pkt->stream_index,
2417  pkt->pos, av_ts2timestr(pkt->dts, &st->time_base));
2418  file->nb_streams_warn = pkt->stream_index + 1;
2419 }
2420 
2422 {
2423  AVDictionaryEntry *e;
2424 
2425  uint8_t *encoder_string;
2426  int encoder_string_len;
2427  int format_flags = 0;
2428  int codec_flags = 0;
2429 
2430  if (av_dict_get(ost->st->metadata, "encoder", NULL, 0))
2431  return;
2432 
2433  e = av_dict_get(of->opts, "fflags", NULL, 0);
2434  if (e) {
2435  const AVOption *o = av_opt_find(of->ctx, "fflags", NULL, 0, 0);
2436  if (!o)
2437  return;
2438  av_opt_eval_flags(of->ctx, o, e->value, &format_flags);
2439  }
2440  e = av_dict_get(ost->encoder_opts, "flags", NULL, 0);
2441  if (e) {
2442  const AVOption *o = av_opt_find(ost->enc_ctx, "flags", NULL, 0, 0);
2443  if (!o)
2444  return;
2445  av_opt_eval_flags(ost->enc_ctx, o, e->value, &codec_flags);
2446  }
2447 
2448  encoder_string_len = sizeof(LIBAVCODEC_IDENT) + strlen(ost->enc->name) + 2;
2449  encoder_string = av_mallocz(encoder_string_len);
2450  if (!encoder_string)
2451  exit_program(1);
2452 
2453  if (!(format_flags & AVFMT_FLAG_BITEXACT) && !(codec_flags & CODEC_FLAG_BITEXACT))
2454  av_strlcpy(encoder_string, LIBAVCODEC_IDENT " ", encoder_string_len);
2455  else
2456  av_strlcpy(encoder_string, "Lavc ", encoder_string_len);
2457  av_strlcat(encoder_string, ost->enc->name, encoder_string_len);
2458  av_dict_set(&ost->st->metadata, "encoder", encoder_string,
2460 }
2461 
2462 static int transcode_init(void)
2463 {
2464  int ret = 0, i, j, k;
2465  AVFormatContext *oc;
2466  OutputStream *ost;
2467  InputStream *ist;
2468  char error[1024];
2469  int want_sdp = 1;
2470 
2471  for (i = 0; i < nb_filtergraphs; i++) {
2472  FilterGraph *fg = filtergraphs[i];
2473  for (j = 0; j < fg->nb_outputs; j++) {
2474  OutputFilter *ofilter = fg->outputs[j];
2475  if (!ofilter->ost || ofilter->ost->source_index >= 0)
2476  continue;
2477  if (fg->nb_inputs != 1)
2478  continue;
2479  for (k = nb_input_streams-1; k >= 0 ; k--)
2480  if (fg->inputs[0]->ist == input_streams[k])
2481  break;
2482  ofilter->ost->source_index = k;
2483  }
2484  }
2485 
2486  /* init framerate emulation */
2487  for (i = 0; i < nb_input_files; i++) {
2488  InputFile *ifile = input_files[i];
2489  if (ifile->rate_emu)
2490  for (j = 0; j < ifile->nb_streams; j++)
2491  input_streams[j + ifile->ist_index]->start = av_gettime_relative();
2492  }
2493 
2494  /* output stream init */
2495  for (i = 0; i < nb_output_files; i++) {
2496  oc = output_files[i]->ctx;
2497  if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
2498  av_dump_format(oc, i, oc->filename, 1);
2499  av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2500  return AVERROR(EINVAL);
2501  }
2502  }
2503 
2504  /* init complex filtergraphs */
2505  for (i = 0; i < nb_filtergraphs; i++)
2506  if ((ret = avfilter_graph_config(filtergraphs[i]->graph, NULL)) < 0)
2507  return ret;
2508 
2509  /* for each output stream, we compute the right encoding parameters */
2510  for (i = 0; i < nb_output_streams; i++) {
2511  AVCodecContext *enc_ctx;
2512  AVCodecContext *dec_ctx = NULL;
2513  ost = output_streams[i];
2514  oc = output_files[ost->file_index]->ctx;
2515  ist = get_input_stream(ost);
2516 
2517  if (ost->attachment_filename)
2518  continue;
2519 
2520  enc_ctx = ost->enc_ctx;
2521 
2522  if (ist) {
2523  dec_ctx = ist->dec_ctx;
2524 
2525  ost->st->disposition = ist->st->disposition;
2526  enc_ctx->bits_per_raw_sample = dec_ctx->bits_per_raw_sample;
2527  enc_ctx->chroma_sample_location = dec_ctx->chroma_sample_location;
2528  } else {
2529  for (j=0; j<oc->nb_streams; j++) {
2530  AVStream *st = oc->streams[j];
2531  if (st != ost->st && st->codec->codec_type == enc_ctx->codec_type)
2532  break;
2533  }
2534  if (j == oc->nb_streams)
2535  if (enc_ctx->codec_type == AVMEDIA_TYPE_AUDIO || enc_ctx->codec_type == AVMEDIA_TYPE_VIDEO)
2537  }
2538 
2539  if (ost->stream_copy) {
2540  AVRational sar;
2541  uint64_t extra_size;
2542 
2543  av_assert0(ist && !ost->filter);
2544 
2545  extra_size = (uint64_t)dec_ctx->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2546 
2547  if (extra_size > INT_MAX) {
2548  return AVERROR(EINVAL);
2549  }
2550 
2551  /* if stream_copy is selected, no need to decode or encode */
2552  enc_ctx->codec_id = dec_ctx->codec_id;
2553  enc_ctx->codec_type = dec_ctx->codec_type;
2554 
2555  if (!enc_ctx->codec_tag) {
2556  unsigned int codec_tag;
2557  if (!oc->oformat->codec_tag ||
2558  av_codec_get_id (oc->oformat->codec_tag, dec_ctx->codec_tag) == enc_ctx->codec_id ||
2559  !av_codec_get_tag2(oc->oformat->codec_tag, dec_ctx->codec_id, &codec_tag))
2560  enc_ctx->codec_tag = dec_ctx->codec_tag;
2561  }
2562 
2563  enc_ctx->bit_rate = dec_ctx->bit_rate;
2564  enc_ctx->rc_max_rate = dec_ctx->rc_max_rate;
2565  enc_ctx->rc_buffer_size = dec_ctx->rc_buffer_size;
2566  enc_ctx->field_order = dec_ctx->field_order;
2567  enc_ctx->extradata = av_mallocz(extra_size);
2568  if (!enc_ctx->extradata) {
2569  return AVERROR(ENOMEM);
2570  }
2571  memcpy(enc_ctx->extradata, dec_ctx->extradata, dec_ctx->extradata_size);
2572  enc_ctx->extradata_size= dec_ctx->extradata_size;
2573  enc_ctx->bits_per_coded_sample = dec_ctx->bits_per_coded_sample;
2574 
2575  enc_ctx->time_base = ist->st->time_base;
2576  /*
2577  * Avi is a special case here because it supports variable fps but
2578  * having the fps and timebase differe significantly adds quite some
2579  * overhead
2580  */
2581  if(!strcmp(oc->oformat->name, "avi")) {
2582  if ( copy_tb<0 && av_q2d(ist->st->r_frame_rate) >= av_q2d(ist->st->avg_frame_rate)
2583  && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(ist->st->time_base)
2584  && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(dec_ctx->time_base)
2585  && av_q2d(ist->st->time_base) < 1.0/500 && av_q2d(dec_ctx->time_base) < 1.0/500
2586  || copy_tb==2){
2587  enc_ctx->time_base.num = ist->st->r_frame_rate.den;
2588  enc_ctx->time_base.den = 2*ist->st->r_frame_rate.num;
2589  enc_ctx->ticks_per_frame = 2;
2590  } else if ( copy_tb<0 && av_q2d(dec_ctx->time_base)*dec_ctx->ticks_per_frame > 2*av_q2d(ist->st->time_base)
2591  && av_q2d(ist->st->time_base) < 1.0/500
2592  || copy_tb==0){
2593  enc_ctx->time_base = dec_ctx->time_base;
2594  enc_ctx->time_base.num *= dec_ctx->ticks_per_frame;
2595  enc_ctx->time_base.den *= 2;
2596  enc_ctx->ticks_per_frame = 2;
2597  }
2598  } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)
2599  && strcmp(oc->oformat->name, "mov") && strcmp(oc->oformat->name, "mp4") && strcmp(oc->oformat->name, "3gp")
2600  && strcmp(oc->oformat->name, "3g2") && strcmp(oc->oformat->name, "psp") && strcmp(oc->oformat->name, "ipod")
2601  && strcmp(oc->oformat->name, "f4v")
2602  ) {
2603  if( copy_tb<0 && dec_ctx->time_base.den
2604  && av_q2d(dec_ctx->time_base)*dec_ctx->ticks_per_frame > av_q2d(ist->st->time_base)
2605  && av_q2d(ist->st->time_base) < 1.0/500
2606  || copy_tb==0){
2607  enc_ctx->time_base = dec_ctx->time_base;
2608  enc_ctx->time_base.num *= dec_ctx->ticks_per_frame;
2609  }
2610  }
2611  if ( enc_ctx->codec_tag == AV_RL32("tmcd")
2612  && dec_ctx->time_base.num < dec_ctx->time_base.den
2613  && dec_ctx->time_base.num > 0
2614  && 121LL*dec_ctx->time_base.num > dec_ctx->time_base.den) {
2615  enc_ctx->time_base = dec_ctx->time_base;
2616  }
2617 
2618  if (ist && !ost->frame_rate.num)
2619  ost->frame_rate = ist->framerate;
2620  if(ost->frame_rate.num)
2621  enc_ctx->time_base = av_inv_q(ost->frame_rate);
2622 
2623  av_reduce(&enc_ctx->time_base.num, &enc_ctx->time_base.den,
2624  enc_ctx->time_base.num, enc_ctx->time_base.den, INT_MAX);
2625 
2626  ost->parser = av_parser_init(enc_ctx->codec_id);
2627 
2628  switch (enc_ctx->codec_type) {
2629  case AVMEDIA_TYPE_AUDIO:
2630  if (audio_volume != 256) {
2631  av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2632  exit_program(1);
2633  }
2634  enc_ctx->channel_layout = dec_ctx->channel_layout;
2635  enc_ctx->sample_rate = dec_ctx->sample_rate;
2636  enc_ctx->channels = dec_ctx->channels;
2637  enc_ctx->frame_size = dec_ctx->frame_size;
2638  enc_ctx->audio_service_type = dec_ctx->audio_service_type;
2639  enc_ctx->block_align = dec_ctx->block_align;
2640  enc_ctx->delay = dec_ctx->delay;
2641  if((enc_ctx->block_align == 1 || enc_ctx->block_align == 1152 || enc_ctx->block_align == 576) && enc_ctx->codec_id == AV_CODEC_ID_MP3)
2642  enc_ctx->block_align= 0;
2643  if(enc_ctx->codec_id == AV_CODEC_ID_AC3)
2644  enc_ctx->block_align= 0;
2645  break;
2646  case AVMEDIA_TYPE_VIDEO:
2647  enc_ctx->pix_fmt = dec_ctx->pix_fmt;
2648  enc_ctx->width = dec_ctx->width;
2649  enc_ctx->height = dec_ctx->height;
2650  enc_ctx->has_b_frames = dec_ctx->has_b_frames;
2651  if (ost->frame_aspect_ratio.num) { // overridden by the -aspect cli option
2652  sar =
2654  (AVRational){ enc_ctx->height, enc_ctx->width });
2655  av_log(NULL, AV_LOG_WARNING, "Overriding aspect ratio "
2656  "with stream copy may produce invalid files\n");
2657  }
2658  else if (ist->st->sample_aspect_ratio.num)
2659  sar = ist->st->sample_aspect_ratio;
2660  else
2661  sar = dec_ctx->sample_aspect_ratio;
2662  ost->st->sample_aspect_ratio = enc_ctx->sample_aspect_ratio = sar;
2663  ost->st->avg_frame_rate = ist->st->avg_frame_rate;
2664  break;
2665  case AVMEDIA_TYPE_SUBTITLE:
2666  enc_ctx->width = dec_ctx->width;
2667  enc_ctx->height = dec_ctx->height;
2668  break;
2669  case AVMEDIA_TYPE_DATA:
2671  break;
2672  default:
2673  abort();
2674  }
2675  } else {
2676  if (!ost->enc)
2677  ost->enc = avcodec_find_encoder(enc_ctx->codec_id);
2678  if (!ost->enc) {
2679  /* should only happen when a default codec is not present. */
2680  snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
2681  avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
2682  ret = AVERROR(EINVAL);
2683  goto dump_format;
2684  }
2685 
2686  if (ist)
2688  ost->encoding_needed = 1;
2689 
2690  set_encoder_id(output_files[ost->file_index], ost);
2691 
2692  if (!ost->filter &&
2693  (enc_ctx->codec_type == AVMEDIA_TYPE_VIDEO ||
2694  enc_ctx->codec_type == AVMEDIA_TYPE_AUDIO)) {
2695  FilterGraph *fg;
2696  fg = init_simple_filtergraph(ist, ost);
2697  if (configure_filtergraph(fg)) {
2698  av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2699  exit_program(1);
2700  }
2701  }
2702 
2703  if (enc_ctx->codec_type == AVMEDIA_TYPE_VIDEO) {
2704  if (ost->filter && !ost->frame_rate.num)
2706  if (ist && !ost->frame_rate.num)
2707  ost->frame_rate = ist->framerate;
2708  if (ist && !ost->frame_rate.num)
2709  ost->frame_rate = ist->st->r_frame_rate;
2710  if (ist && !ost->frame_rate.num) {
2711  ost->frame_rate = (AVRational){25, 1};
2712  av_log(NULL, AV_LOG_WARNING,
2713  "No information "
2714  "about the input framerate is available. Falling "
2715  "back to a default value of 25fps for output stream #%d:%d. Use the -r option "
2716  "if you want a different framerate.\n",
2717  ost->file_index, ost->index);
2718  }
2719 // ost->frame_rate = ist->st->avg_frame_rate.num ? ist->st->avg_frame_rate : (AVRational){25, 1};
2720  if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2722  ost->frame_rate = ost->enc->supported_framerates[idx];
2723  }
2724  if (enc_ctx->codec_id == AV_CODEC_ID_MPEG4) {
2725  av_reduce(&ost->frame_rate.num, &ost->frame_rate.den,
2726  ost->frame_rate.num, ost->frame_rate.den, 65535);
2727  }
2728  }
2729 
2730  switch (enc_ctx->codec_type) {
2731  case AVMEDIA_TYPE_AUDIO:
2732  enc_ctx->sample_fmt = ost->filter->filter->inputs[0]->format;
2733  enc_ctx->sample_rate = ost->filter->filter->inputs[0]->sample_rate;
2734  enc_ctx->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
2735  enc_ctx->channels = avfilter_link_get_channels(ost->filter->filter->inputs[0]);
2736  enc_ctx->time_base = (AVRational){ 1, enc_ctx->sample_rate };
2737  break;
2738  case AVMEDIA_TYPE_VIDEO:
2739  enc_ctx->time_base = av_inv_q(ost->frame_rate);
2740  if (ost->filter && !(enc_ctx->time_base.num && enc_ctx->time_base.den))
2741  enc_ctx->time_base = ost->filter->filter->inputs[0]->time_base;
2742  if ( av_q2d(enc_ctx->time_base) < 0.001 && video_sync_method != VSYNC_PASSTHROUGH
2744  av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not efficiently supporting it.\n"
2745  "Please consider specifying a lower framerate, a different muxer or -vsync 2\n");
2746  }
2747  for (j = 0; j < ost->forced_kf_count; j++)
2748  ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
2750  enc_ctx->time_base);
2751 
2752  enc_ctx->width = ost->filter->filter->inputs[0]->w;
2753  enc_ctx->height = ost->filter->filter->inputs[0]->h;
2754  enc_ctx->sample_aspect_ratio = ost->st->sample_aspect_ratio =
2755  ost->frame_aspect_ratio.num ? // overridden by the -aspect cli option
2756  av_mul_q(ost->frame_aspect_ratio, (AVRational){ enc_ctx->height, enc_ctx->width }) :
2758  if (!strncmp(ost->enc->name, "libx264", 7) &&
2759  enc_ctx->pix_fmt == AV_PIX_FMT_NONE &&
2761  av_log(NULL, AV_LOG_WARNING,
2762  "No pixel format specified, %s for H.264 encoding chosen.\n"
2763  "Use -pix_fmt yuv420p for compatibility with outdated media players.\n",
2765  if (!strncmp(ost->enc->name, "mpeg2video", 10) &&
2766  enc_ctx->pix_fmt == AV_PIX_FMT_NONE &&
2768  av_log(NULL, AV_LOG_WARNING,
2769  "No pixel format specified, %s for MPEG-2 encoding chosen.\n"
2770  "Use -pix_fmt yuv420p for compatibility with outdated media players.\n",
2772  enc_ctx->pix_fmt = ost->filter->filter->inputs[0]->format;
2773 
2774  ost->st->avg_frame_rate = ost->frame_rate;
2775 
2776  if (!dec_ctx ||
2777  enc_ctx->width != dec_ctx->width ||
2778  enc_ctx->height != dec_ctx->height ||
2779  enc_ctx->pix_fmt != dec_ctx->pix_fmt) {
2780  enc_ctx->bits_per_raw_sample = frame_bits_per_raw_sample;
2781  }
2782 
2783  if (ost->forced_keyframes) {
2784  if (!strncmp(ost->forced_keyframes, "expr:", 5)) {
2786  forced_keyframes_const_names, NULL, NULL, NULL, NULL, 0, NULL);
2787  if (ret < 0) {
2788  av_log(NULL, AV_LOG_ERROR,
2789  "Invalid force_key_frames expression '%s'\n", ost->forced_keyframes+5);
2790  return ret;
2791  }
2796  } else {
2798  }
2799  }
2800  break;
2801  case AVMEDIA_TYPE_SUBTITLE:
2802  enc_ctx->time_base = (AVRational){1, 1000};
2803  if (!enc_ctx->width) {
2804  enc_ctx->width = input_streams[ost->source_index]->st->codec->width;
2805  enc_ctx->height = input_streams[ost->source_index]->st->codec->height;
2806  }
2807  break;
2808  default:
2809  abort();
2810  break;
2811  }
2812  /* two pass mode */
2813  if (enc_ctx->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2)) {
2814  char logfilename[1024];
2815  FILE *f;
2816 
2817  snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2818  ost->logfile_prefix ? ost->logfile_prefix :
2820  i);
2821  if (!strcmp(ost->enc->name, "libx264")) {
2822  av_dict_set(&ost->encoder_opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
2823  } else {
2824  if (enc_ctx->flags & CODEC_FLAG_PASS2) {
2825  char *logbuffer;
2826  size_t logbuffer_size;
2827  if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2828  av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2829  logfilename);
2830  exit_program(1);
2831  }
2832  enc_ctx->stats_in = logbuffer;
2833  }
2834  if (enc_ctx->flags & CODEC_FLAG_PASS1) {
2835  f = av_fopen_utf8(logfilename, "wb");
2836  if (!f) {
2837  av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2838  logfilename, strerror(errno));
2839  exit_program(1);
2840  }
2841  ost->logfile = f;
2842  }
2843  }
2844  }
2845  }
2846  }
2847 
2848  /* open each encoder */
2849  for (i = 0; i < nb_output_streams; i++) {
2850  ost = output_streams[i];
2851  if (ost->encoding_needed) {
2852  AVCodec *codec = ost->enc;
2853  AVCodecContext *dec = NULL;
2854 
2855  if ((ist = get_input_stream(ost)))
2856  dec = ist->dec_ctx;
2857  if (dec && dec->subtitle_header) {
2858  /* ASS code assumes this buffer is null terminated so add extra byte. */
2859  ost->enc_ctx->subtitle_header = av_mallocz(dec->subtitle_header_size + 1);
2860  if (!ost->enc_ctx->subtitle_header) {
2861  ret = AVERROR(ENOMEM);
2862  goto dump_format;
2863  }
2864  memcpy(ost->enc_ctx->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2865  ost->enc_ctx->subtitle_header_size = dec->subtitle_header_size;
2866  }
2867  if (!av_dict_get(ost->encoder_opts, "threads", NULL, 0))
2868  av_dict_set(&ost->encoder_opts, "threads", "auto", 0);
2869  av_dict_set(&ost->encoder_opts, "side_data_only_packets", "1", 0);
2870 
2871  if ((ret = avcodec_open2(ost->enc_ctx, codec, &ost->encoder_opts)) < 0) {
2872  if (ret == AVERROR_EXPERIMENTAL)
2873  abort_codec_experimental(codec, 1);
2874  snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2875  ost->file_index, ost->index);
2876  goto dump_format;
2877  }
2878  if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
2879  !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
2880  av_buffersink_set_frame_size(ost->filter->filter,
2881  ost->enc_ctx->frame_size);
2882  assert_avoptions(ost->encoder_opts);
2883  if (ost->enc_ctx->bit_rate && ost->enc_ctx->bit_rate < 1000)
2884  av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2885  " It takes bits/s as argument, not kbits/s\n");
2886  } else {
2887  if (av_opt_set_dict(ost->enc_ctx, &ost->encoder_opts) < 0) {
2888  av_log(NULL, AV_LOG_FATAL,
2889  "Error setting up codec context options.\n");
2890  exit_program(1);
2891  }
2892  }
2893 
2894  ret = avcodec_copy_context(ost->st->codec, ost->enc_ctx);
2895  if (ret < 0) {
2896  av_log(NULL, AV_LOG_FATAL,
2897  "Error initializing the output stream codec context.\n");
2898  exit_program(1);
2899  }
2900  ost->st->codec->codec= ost->enc_ctx->codec;
2901 
2902  // copy timebase while removing common factors
2903  ost->st->time_base = av_add_q(ost->enc_ctx->time_base, (AVRational){0, 1});
2904  }
2905 
2906  /* init input streams */
2907  for (i = 0; i < nb_input_streams; i++)
2908  if ((ret = init_input_stream(i, error, sizeof(error))) < 0) {
2909  for (i = 0; i < nb_output_streams; i++) {
2910  ost = output_streams[i];
2911  avcodec_close(ost->enc_ctx);
2912  }
2913  goto dump_format;
2914  }
2915 
2916  /* discard unused programs */
2917  for (i = 0; i < nb_input_files; i++) {
2918  InputFile *ifile = input_files[i];
2919  for (j = 0; j < ifile->ctx->nb_programs; j++) {
2920  AVProgram *p = ifile->ctx->programs[j];
2921  int discard = AVDISCARD_ALL;
2922 
2923  for (k = 0; k < p->nb_stream_indexes; k++)
2924  if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
2925  discard = AVDISCARD_DEFAULT;
2926  break;
2927  }
2928  p->discard = discard;
2929  }
2930  }
2931 
2932  /* open files and write file headers */
2933  for (i = 0; i < nb_output_files; i++) {
2934  oc = output_files[i]->ctx;
2935  oc->interrupt_callback = int_cb;
2936  if ((ret = avformat_write_header(oc, &output_files[i]->opts)) < 0) {
2937  snprintf(error, sizeof(error),
2938  "Could not write header for output file #%d "
2939  "(incorrect codec parameters ?): %s",
2940  i, av_err2str(ret));
2941  ret = AVERROR(EINVAL);
2942  goto dump_format;
2943  }
2944 // assert_avoptions(output_files[i]->opts);
2945  if (strcmp(oc->oformat->name, "rtp")) {
2946  want_sdp = 0;
2947  }
2948  }
2949 
2950  dump_format:
2951  /* dump the file output parameters - cannot be done before in case
2952  of stream copy */
2953  for (i = 0; i < nb_output_files; i++) {
2954  av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
2955  }
2956 
2957  /* dump the stream mapping */
2958  av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2959  for (i = 0; i < nb_input_streams; i++) {
2960  ist = input_streams[i];
2961 
2962  for (j = 0; j < ist->nb_filters; j++) {
2963  if (ist->filters[j]->graph->graph_desc) {
2964  av_log(NULL, AV_LOG_INFO, " Stream #%d:%d (%s) -> %s",
2965  ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
2966  ist->filters[j]->name);
2967  if (nb_filtergraphs > 1)
2968  av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
2969  av_log(NULL, AV_LOG_INFO, "\n");
2970  }
2971  }
2972  }
2973 
2974  for (i = 0; i < nb_output_streams; i++) {
2975  ost = output_streams[i];
2976 
2977  if (ost->attachment_filename) {
2978  /* an attached file */
2979  av_log(NULL, AV_LOG_INFO, " File %s -> Stream #%d:%d\n",
2980  ost->attachment_filename, ost->file_index, ost->index);
2981  continue;
2982  }
2983 
2984  if (ost->filter && ost->filter->graph->graph_desc) {
2985  /* output from a complex graph */
2986  av_log(NULL, AV_LOG_INFO, " %s", ost->filter->name);
2987  if (nb_filtergraphs > 1)
2988  av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
2989 
2990  av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
2991  ost->index, ost->enc ? ost->enc->name : "?");
2992  continue;
2993  }
2994 
2995  av_log(NULL, AV_LOG_INFO, " Stream #%d:%d -> #%d:%d",
2996  input_streams[ost->source_index]->file_index,
2997  input_streams[ost->source_index]->st->index,
2998  ost->file_index,
2999  ost->index);
3000  if (ost->sync_ist != input_streams[ost->source_index])
3001  av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
3002  ost->sync_ist->file_index,
3003  ost->sync_ist->st->index);
3004  if (ost->stream_copy)
3005  av_log(NULL, AV_LOG_INFO, " (copy)");
3006  else {
3007  const AVCodec *in_codec = input_streams[ost->source_index]->dec;
3008  const AVCodec *out_codec = ost->enc;
3009  const char *decoder_name = "?";
3010  const char *in_codec_name = "?";
3011  const char *encoder_name = "?";
3012  const char *out_codec_name = "?";
3013 
3014  if (in_codec) {
3015  decoder_name = in_codec->name;
3016  in_codec_name = avcodec_descriptor_get(in_codec->id)->name;
3017  if (!strcmp(decoder_name, in_codec_name))
3018  decoder_name = "native";
3019  }
3020 
3021  if (out_codec) {
3022  encoder_name = out_codec->name;
3023  out_codec_name = avcodec_descriptor_get(out_codec->id)->name;
3024  if (!strcmp(encoder_name, out_codec_name))
3025  encoder_name = "native";
3026  }
3027 
3028  av_log(NULL, AV_LOG_INFO, " (%s (%s) -> %s (%s))",
3029  in_codec_name, decoder_name,
3030  out_codec_name, encoder_name);
3031  }
3032  av_log(NULL, AV_LOG_INFO, "\n");
3033  }
3034 
3035  if (ret) {
3036  av_log(NULL, AV_LOG_ERROR, "%s\n", error);
3037  return ret;
3038  }
3039 
3040  if (want_sdp) {
3041  print_sdp();
3042  }
3043 
3044  transcode_init_done = 1;
3045 
3046  return 0;
3047 }
3048 
3049 /* Return 1 if there remain streams where more output is wanted, 0 otherwise. */
3050 static int need_output(void)
3051 {
3052  int i;
3053 
3054  for (i = 0; i < nb_output_streams; i++) {
3055  OutputStream *ost = output_streams[i];
3056  OutputFile *of = output_files[ost->file_index];
3057  AVFormatContext *os = output_files[ost->file_index]->ctx;
3058 
3059  if (ost->finished ||
3060  (os->pb && avio_tell(os->pb) >= of->limit_filesize))
3061  continue;
3062  if (ost->frame_number >= ost->max_frames) {
3063  int j;
3064  for (j = 0; j < of->ctx->nb_streams; j++)
3065  close_output_stream(output_streams[of->ost_index + j]);
3066  continue;
3067  }
3068 
3069  return 1;
3070  }
3071 
3072  return 0;
3073 }
3074 
3075 /**
3076  * Select the output stream to process.
3077  *
3078  * @return selected output stream, or NULL if none available
3079  */
3081 {
3082  int i;
3083  int64_t opts_min = INT64_MAX;
3084  OutputStream *ost_min = NULL;
3085 
3086  for (i = 0; i < nb_output_streams; i++) {
3087  OutputStream *ost = output_streams[i];
3088  int64_t opts = av_rescale_q(ost->st->cur_dts, ost->st->time_base,
3089  AV_TIME_BASE_Q);
3090  if (!ost->unavailable && !ost->finished && opts < opts_min) {
3091  opts_min = opts;
3092  ost_min = ost;
3093  }
3094  }
3095  return ost_min;
3096 }
3097 
3099 {
3100  int i, ret, key;
3101  static int64_t last_time;
3102  if (received_nb_signals)
3103  return AVERROR_EXIT;
3104  /* read_key() returns 0 on EOF */
3105  if(cur_time - last_time >= 100000 && !run_as_daemon){
3106  key = read_key();
3107  last_time = cur_time;
3108  }else
3109  key = -1;
3110  if (key == 'q')
3111  return AVERROR_EXIT;
3112  if (key == '+') av_log_set_level(av_log_get_level()+10);
3113  if (key == '-') av_log_set_level(av_log_get_level()-10);
3114  if (key == 's') qp_hist ^= 1;
3115  if (key == 'h'){
3116  if (do_hex_dump){
3117  do_hex_dump = do_pkt_dump = 0;
3118  } else if(do_pkt_dump){
3119  do_hex_dump = 1;
3120  } else
3121  do_pkt_dump = 1;
3123  }
3124  if (key == 'c' || key == 'C'){
3125  char buf[4096], target[64], command[256], arg[256] = {0};
3126  double time;
3127  int k, n = 0;
3128  fprintf(stderr, "\nEnter command: <target>|all <time>|-1 <command>[ <argument>]\n");
3129  i = 0;
3130  while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
3131  if (k > 0)
3132  buf[i++] = k;
3133  buf[i] = 0;
3134  if (k > 0 &&
3135  (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
3136  av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
3137  target, time, command, arg);
3138  for (i = 0; i < nb_filtergraphs; i++) {
3139  FilterGraph *fg = filtergraphs[i];
3140  if (fg->graph) {
3141  if (time < 0) {
3142  ret = avfilter_graph_send_command(fg->graph, target, command, arg, buf, sizeof(buf),
3143  key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
3144  fprintf(stderr, "Command reply for stream %d: ret:%d res:\n%s", i, ret, buf);
3145  } else if (key == 'c') {
3146  fprintf(stderr, "Queing commands only on filters supporting the specific command is unsupported\n");
3147  ret = AVERROR_PATCHWELCOME;
3148  } else {
3149  ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
3150  }
3151  }
3152  }
3153  } else {
3154  av_log(NULL, AV_LOG_ERROR,
3155  "Parse error, at least 3 arguments were expected, "
3156  "only %d given in string '%s'\n", n, buf);
3157  }
3158  }
3159  if (key == 'd' || key == 'D'){
3160  int debug=0;
3161  if(key == 'D') {
3162  debug = input_streams[0]->st->codec->debug<<1;
3163  if(!debug) debug = 1;
3164  while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
3165  debug += debug;
3166  }else
3167  if(scanf("%d", &debug)!=1)
3168  fprintf(stderr,"error parsing debug value\n");
3169  for(i=0;i<nb_input_streams;i++) {
3170  input_streams[i]->st->codec->debug = debug;
3171  }
3172  for(i=0;i<nb_output_streams;i++) {
3173  OutputStream *ost = output_streams[i];
3174  ost->enc_ctx->debug = debug;
3175  }
3176  if(debug) av_log_set_level(AV_LOG_DEBUG);
3177  fprintf(stderr,"debug=%d\n", debug);
3178  }
3179  if (key == '?'){
3180  fprintf(stderr, "key function\n"
3181  "? show this help\n"
3182  "+ increase verbosity\n"
3183  "- decrease verbosity\n"
3184  "c Send command to first matching filter supporting it\n"
3185  "C Send/Que command to all matching filters\n"
3186  "D cycle through available debug modes\n"
3187  "h dump packets/hex press to cycle through the 3 states\n"
3188  "q quit\n"
3189  "s Show QP histogram\n"
3190  );
3191  }
3192  return 0;
3193 }
3194 
3195 #if HAVE_PTHREADS
3196 static void *input_thread(void *arg)
3197 {
3198  InputFile *f = arg;
3199  int ret = 0;
3200 
3201  while (1) {
3202  AVPacket pkt;
3203  ret = av_read_frame(f->ctx, &pkt);
3204 
3205  if (ret == AVERROR(EAGAIN)) {
3206  av_usleep(10000);
3207  continue;
3208  }
3209  if (ret < 0) {
3210  av_thread_message_queue_set_err_recv(f->in_thread_queue, ret);
3211  break;
3212  }
3213  av_dup_packet(&pkt);
3214  ret = av_thread_message_queue_send(f->in_thread_queue, &pkt, 0);
3215  if (ret < 0) {
3216  if (ret != AVERROR_EOF)
3217  av_log(f->ctx, AV_LOG_ERROR,
3218  "Unable to send packet to main thread: %s\n",
3219  av_err2str(ret));
3220  av_free_packet(&pkt);
3221  av_thread_message_queue_set_err_recv(f->in_thread_queue, ret);
3222  break;
3223  }
3224  }
3225 
3226  return NULL;
3227 }
3228 
3229 static void free_input_threads(void)
3230 {
3231  int i;
3232 
3233  for (i = 0; i < nb_input_files; i++) {
3234  InputFile *f = input_files[i];
3235  AVPacket pkt;
3236 
3237  if (!f->in_thread_queue)
3238  continue;
3240  while (av_thread_message_queue_recv(f->in_thread_queue, &pkt, 0) >= 0)
3241  av_free_packet(&pkt);
3242 
3243  pthread_join(f->thread, NULL);
3244  f->joined = 1;
3245  av_thread_message_queue_free(&f->in_thread_queue);
3246  }
3247 }
3248 
3249 static int init_input_threads(void)
3250 {
3251  int i, ret;
3252 
3253  if (nb_input_files == 1)
3254  return 0;
3255 
3256  for (i = 0; i < nb_input_files; i++) {
3257  InputFile *f = input_files[i];
3258 
3259  if (f->ctx->pb ? !f->ctx->pb->seekable :
3260  strcmp(f->ctx->iformat->name, "lavfi"))
3261  f->non_blocking = 1;
3262  ret = av_thread_message_queue_alloc(&f->in_thread_queue,
3263  8, sizeof(AVPacket));
3264  if (ret < 0)
3265  return ret;
3266 
3267  if ((ret = pthread_create(&f->thread, NULL, input_thread, f))) {
3268  av_log(NULL, AV_LOG_ERROR, "pthread_create failed: %s. Try to increase `ulimit -v` or decrease `ulimit -s`.\n", strerror(ret));
3269  av_thread_message_queue_free(&f->in_thread_queue);
3270  return AVERROR(ret);
3271  }
3272  }
3273  return 0;
3274 }
3275 
3276 static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
3277 {
3278  return av_thread_message_queue_recv(f->in_thread_queue, pkt,
3279  f->non_blocking ?
3281 }
3282 #endif
3283 
3285 {
3286  if (f->rate_emu) {
3287  int i;
3288  for (i = 0; i < f->nb_streams; i++) {
3289  InputStream *ist = input_streams[f->ist_index + i];
3290  int64_t pts = av_rescale(ist->dts, 1000000, AV_TIME_BASE);
3291  int64_t now = av_gettime_relative() - ist->start;
3292  if (pts > now)
3293  return AVERROR(EAGAIN);
3294  }
3295  }
3296 
3297 #if HAVE_PTHREADS
3298  if (nb_input_files > 1)
3299  return get_input_packet_mt(f, pkt);
3300 #endif
3301  return av_read_frame(f->ctx, pkt);
3302 }
3303 
3304 static int got_eagain(void)
3305 {
3306  int i;
3307  for (i = 0; i < nb_output_streams; i++)
3308  if (output_streams[i]->unavailable)
3309  return 1;
3310  return 0;
3311 }
3312 
3313 static void reset_eagain(void)
3314 {
3315  int i;
3316  for (i = 0; i < nb_input_files; i++)
3317  input_files[i]->eagain = 0;
3318  for (i = 0; i < nb_output_streams; i++)
3319  output_streams[i]->unavailable = 0;
3320 }
3321 
3322 /*
3323  * Return
3324  * - 0 -- one packet was read and processed
3325  * - AVERROR(EAGAIN) -- no packets were available for selected file,
3326  * this function should be called again
3327  * - AVERROR_EOF -- this function should not be called again
3328  */
3329 static int process_input(int file_index)
3330 {
3331  InputFile *ifile = input_files[file_index];
3332  AVFormatContext *is;
3333  InputStream *ist;
3334  AVPacket pkt;
3335  int ret, i, j;
3336 
3337  is = ifile->ctx;
3338  ret = get_input_packet(ifile, &pkt);
3339 
3340  if (ret == AVERROR(EAGAIN)) {
3341  ifile->eagain = 1;
3342  return ret;
3343  }
3344  if (ret < 0) {
3345  if (ret != AVERROR_EOF) {
3346  print_error(is->filename, ret);
3347  if (exit_on_error)
3348  exit_program(1);
3349  }
3350 
3351  for (i = 0; i < ifile->nb_streams; i++) {
3352  ist = input_streams[ifile->ist_index + i];
3353  if (ist->decoding_needed) {
3354  ret = process_input_packet(ist, NULL);
3355  if (ret>0)
3356  return 0;
3357  }
3358 
3359  /* mark all outputs that don't go through lavfi as finished */
3360  for (j = 0; j < nb_output_streams; j++) {
3361  OutputStream *ost = output_streams[j];
3362 
3363  if (ost->source_index == ifile->ist_index + i &&
3364  (ost->stream_copy || ost->enc->type == AVMEDIA_TYPE_SUBTITLE))
3365  finish_output_stream(ost);
3366  }
3367  }
3368 
3369  ifile->eof_reached = 1;
3370  return AVERROR(EAGAIN);
3371  }
3372 
3373  reset_eagain();
3374 
3375  if (do_pkt_dump) {
3377  is->streams[pkt.stream_index]);
3378  }
3379  /* the following test is needed in case new streams appear
3380  dynamically in stream : we ignore them */
3381  if (pkt.stream_index >= ifile->nb_streams) {
3382  report_new_stream(file_index, &pkt);
3383  goto discard_packet;
3384  }
3385 
3386  ist = input_streams[ifile->ist_index + pkt.stream_index];
3387 
3388  ist->data_size += pkt.size;
3389  ist->nb_packets++;
3390 
3391  if (ist->discard)
3392  goto discard_packet;
3393 
3394  if (debug_ts) {
3395  av_log(NULL, AV_LOG_INFO, "demuxer -> ist_index:%d type:%s "
3396  "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",
3400  av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
3401  av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
3402  av_ts2str(input_files[ist->file_index]->ts_offset),
3403  av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
3404  }
3405 
3406  if(!ist->wrap_correction_done && is->start_time != AV_NOPTS_VALUE && ist->st->pts_wrap_bits < 64){
3407  int64_t stime, stime2;
3408  // Correcting starttime based on the enabled streams
3409  // 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.
3410  // so we instead do it here as part of discontinuity handling
3411  if ( ist->next_dts == AV_NOPTS_VALUE
3412  && ifile->ts_offset == -is->start_time
3413  && (is->iformat->flags & AVFMT_TS_DISCONT)) {
3414  int64_t new_start_time = INT64_MAX;
3415  for (i=0; i<is->nb_streams; i++) {
3416  AVStream *st = is->streams[i];
3417  if(st->discard == AVDISCARD_ALL || st->start_time == AV_NOPTS_VALUE)
3418  continue;
3419  new_start_time = FFMIN(new_start_time, av_rescale_q(st->start_time, st->time_base, AV_TIME_BASE_Q));
3420  }
3421  if (new_start_time > is->start_time) {
3422  av_log(is, AV_LOG_VERBOSE, "Correcting start time by %"PRId64"\n", new_start_time - is->start_time);
3423  ifile->ts_offset = -new_start_time;
3424  }
3425  }
3426 
3427  stime = av_rescale_q(is->start_time, AV_TIME_BASE_Q, ist->st->time_base);
3428  stime2= stime + (1ULL<<ist->st->pts_wrap_bits);
3429  ist->wrap_correction_done = 1;
3430 
3431  if(stime2 > stime && pkt.dts != AV_NOPTS_VALUE && pkt.dts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
3432  pkt.dts -= 1ULL<<ist->st->pts_wrap_bits;
3433  ist->wrap_correction_done = 0;
3434  }
3435  if(stime2 > stime && pkt.pts != AV_NOPTS_VALUE && pkt.pts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
3436  pkt.pts -= 1ULL<<ist->st->pts_wrap_bits;
3437  ist->wrap_correction_done = 0;
3438  }
3439  }
3440 
3441  /* add the stream-global side data to the first packet */
3442  if (ist->nb_packets == 1) {
3443  if (ist->st->nb_side_data)
3445  for (i = 0; i < ist->st->nb_side_data; i++) {
3446  AVPacketSideData *src_sd = &ist->st->side_data[i];
3447  uint8_t *dst_data;
3448 
3449  if (av_packet_get_side_data(&pkt, src_sd->type, NULL))
3450  continue;
3451 
3452  dst_data = av_packet_new_side_data(&pkt, src_sd->type, src_sd->size);
3453  if (!dst_data)
3454  exit_program(1);
3455 
3456  memcpy(dst_data, src_sd->data, src_sd->size);
3457  }
3458  }
3459 
3460  if (pkt.dts != AV_NOPTS_VALUE)
3461  pkt.dts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
3462  if (pkt.pts != AV_NOPTS_VALUE)
3463  pkt.pts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
3464 
3465  if (pkt.pts != AV_NOPTS_VALUE)
3466  pkt.pts *= ist->ts_scale;
3467  if (pkt.dts != AV_NOPTS_VALUE)
3468  pkt.dts *= ist->ts_scale;
3469 
3470  if ((ist->dec_ctx->codec_type == AVMEDIA_TYPE_VIDEO ||
3472  pkt.dts != AV_NOPTS_VALUE && ist->next_dts == AV_NOPTS_VALUE && !copy_ts
3473  && (is->iformat->flags & AVFMT_TS_DISCONT) && ifile->last_ts != AV_NOPTS_VALUE) {
3474  int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3475  int64_t delta = pkt_dts - ifile->last_ts;
3476  if (delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
3477  delta > 1LL*dts_delta_threshold*AV_TIME_BASE){
3478  ifile->ts_offset -= delta;
3479  av_log(NULL, AV_LOG_DEBUG,
3480  "Inter stream timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
3481  delta, ifile->ts_offset);
3482  pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3483  if (pkt.pts != AV_NOPTS_VALUE)
3484  pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3485  }
3486  }
3487 
3488  if ((ist->dec_ctx->codec_type == AVMEDIA_TYPE_VIDEO ||
3490  pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE &&
3491  !copy_ts) {
3492  int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3493  int64_t delta = pkt_dts - ist->next_dts;
3494  if (is->iformat->flags & AVFMT_TS_DISCONT) {
3495  if (delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
3496  delta > 1LL*dts_delta_threshold*AV_TIME_BASE ||
3497  pkt_dts + AV_TIME_BASE/10 < FFMAX(ist->pts, ist->dts)) {
3498  ifile->ts_offset -= delta;
3499  av_log(NULL, AV_LOG_DEBUG,
3500  "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
3501  delta, ifile->ts_offset);
3502  pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3503  if (pkt.pts != AV_NOPTS_VALUE)
3504  pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3505  }
3506  } else {
3507  if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
3508  delta > 1LL*dts_error_threshold*AV_TIME_BASE) {
3509  av_log(NULL, AV_LOG_WARNING, "DTS %"PRId64", next:%"PRId64" st:%d invalid dropping\n", pkt.dts, ist->next_dts, pkt.stream_index);
3510  pkt.dts = AV_NOPTS_VALUE;
3511  }
3512  if (pkt.pts != AV_NOPTS_VALUE){
3513  int64_t pkt_pts = av_rescale_q(pkt.pts, ist->st->time_base, AV_TIME_BASE_Q);
3514  delta = pkt_pts - ist->next_dts;
3515  if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
3516  delta > 1LL*dts_error_threshold*AV_TIME_BASE) {
3517  av_log(NULL, AV_LOG_WARNING, "PTS %"PRId64", next:%"PRId64" invalid dropping st:%d\n", pkt.pts, ist->next_dts, pkt.stream_index);
3518  pkt.pts = AV_NOPTS_VALUE;
3519  }
3520  }
3521  }
3522  }
3523 
3524  if (pkt.dts != AV_NOPTS_VALUE)
3525  ifile->last_ts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3526 
3527  if (debug_ts) {
3528  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",
3530  av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
3531  av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
3532  av_ts2str(input_files[ist->file_index]->ts_offset),
3533  av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
3534  }
3535 
3536  sub2video_heartbeat(ist, pkt.pts);
3537 
3538  ret = process_input_packet(ist, &pkt);
3539  if (ret < 0) {
3540  av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d: %s\n",
3541  ist->file_index, ist->st->index, av_err2str(ret));
3542  if (exit_on_error)
3543  exit_program(1);
3544  }
3545 
3546 discard_packet:
3547  av_free_packet(&pkt);
3548 
3549  return 0;
3550 }
3551 
3552 /**
3553  * Perform a step of transcoding for the specified filter graph.
3554  *
3555  * @param[in] graph filter graph to consider
3556  * @param[out] best_ist input stream where a frame would allow to continue
3557  * @return 0 for success, <0 for error
3558  */
3559 static int transcode_from_filter(FilterGraph *graph, InputStream **best_ist)
3560 {
3561  int i, ret;
3562  int nb_requests, nb_requests_max = 0;
3563  InputFilter *ifilter;
3564  InputStream *ist;
3565 
3566  *best_ist = NULL;
3567  ret = avfilter_graph_request_oldest(graph->graph);
3568  if (ret >= 0)
3569  return reap_filters();
3570 
3571  if (ret == AVERROR_EOF) {
3572  ret = reap_filters();
3573  for (i = 0; i < graph->nb_outputs; i++)
3574  close_output_stream(graph->outputs[i]->ost);
3575  return ret;
3576  }
3577  if (ret != AVERROR(EAGAIN))
3578  return ret;
3579 
3580  for (i = 0; i < graph->nb_inputs; i++) {
3581  ifilter = graph->inputs[i];
3582  ist = ifilter->ist;
3583  if (input_files[ist->file_index]->eagain ||
3584  input_files[ist->file_index]->eof_reached)
3585  continue;
3586  nb_requests = av_buffersrc_get_nb_failed_requests(ifilter->filter);
3587  if (nb_requests > nb_requests_max) {
3588  nb_requests_max = nb_requests;
3589  *best_ist = ist;
3590  }
3591  }
3592 
3593  if (!*best_ist)
3594  for (i = 0; i < graph->nb_outputs; i++)
3595  graph->outputs[i]->ost->unavailable = 1;
3596 
3597  return 0;
3598 }
3599 
3600 /**
3601  * Run a single step of transcoding.
3602  *
3603  * @return 0 for success, <0 for error
3604  */
3605 static int transcode_step(void)
3606 {
3607  OutputStream *ost;
3608  InputStream *ist;
3609  int ret;
3610 
3611  ost = choose_output();
3612  if (!ost) {
3613  if (got_eagain()) {
3614  reset_eagain();
3615  av_usleep(10000);
3616  return 0;
3617  }
3618  av_log(NULL, AV_LOG_VERBOSE, "No more inputs to read from, finishing.\n");
3619  return AVERROR_EOF;
3620  }
3621 
3622  if (ost->filter) {
3623  if ((ret = transcode_from_filter(ost->filter->graph, &ist)) < 0)
3624  return ret;
3625  if (!ist)
3626  return 0;
3627  } else {
3628  av_assert0(ost->source_index >= 0);
3629  ist = input_streams[ost->source_index];
3630  }
3631 
3632  ret = process_input(ist->file_index);
3633  if (ret == AVERROR(EAGAIN)) {
3634  if (input_files[ist->file_index]->eagain)
3635  ost->unavailable = 1;
3636  return 0;
3637  }
3638  if (ret < 0)
3639  return ret == AVERROR_EOF ? 0 : ret;
3640 
3641  return reap_filters();
3642 }
3643 
3644 /*
3645  * The following code is the main loop of the file converter
3646  */
3647 static int transcode(void)
3648 {
3649  int ret, i;
3650  AVFormatContext *os;
3651  OutputStream *ost;
3652  InputStream *ist;
3653  int64_t timer_start;
3654 
3655  ret = transcode_init();
3656  if (ret < 0)
3657  goto fail;
3658 
3659  if (stdin_interaction) {
3660  av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
3661  }
3662 
3663  timer_start = av_gettime_relative();
3664 
3665 #if HAVE_PTHREADS
3666  if ((ret = init_input_threads()) < 0)
3667  goto fail;
3668 #endif
3669 
3670  while (!received_sigterm) {
3671  int64_t cur_time= av_gettime_relative();
3672 
3673  /* if 'q' pressed, exits */
3674  if (stdin_interaction)
3675  if (check_keyboard_interaction(cur_time) < 0)
3676  break;
3677 
3678  /* check if there's any stream where output is still needed */
3679  if (!need_output()) {
3680  av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n");
3681  break;
3682  }
3683 
3684  ret = transcode_step();
3685  if (ret < 0) {
3686  if (ret == AVERROR_EOF || ret == AVERROR(EAGAIN))
3687  continue;
3688 
3689  av_log(NULL, AV_LOG_ERROR, "Error while filtering.\n");
3690  break;
3691  }
3692 
3693  /* dump report by using the output first video and audio streams */
3694  print_report(0, timer_start, cur_time);
3695  }
3696 #if HAVE_PTHREADS
3698 #endif
3699 
3700  /* at the end of stream, we must flush the decoder buffers */
3701  for (i = 0; i < nb_input_streams; i++) {
3702  ist = input_streams[i];
3703  if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
3704  process_input_packet(ist, NULL);
3705  }
3706  }
3707  flush_encoders();
3708 
3709  term_exit();
3710 
3711  /* write the trailer if needed and close file */
3712  for (i = 0; i < nb_output_files; i++) {
3713  os = output_files[i]->ctx;
3714  av_write_trailer(os);
3715  }
3716 
3717  /* dump report by using the first video and audio streams */
3718  print_report(1, timer_start, av_gettime_relative());
3719 
3720  /* close each encoder */
3721  for (i = 0; i < nb_output_streams; i++) {
3722  ost = output_streams[i];
3723  if (ost->encoding_needed) {
3724  av_freep(&ost->enc_ctx->stats_in);
3725  }
3726  }
3727 
3728  /* close each decoder */
3729  for (i = 0; i < nb_input_streams; i++) {
3730  ist = input_streams[i];
3731  if (ist->decoding_needed) {
3732  avcodec_close(ist->dec_ctx);
3733  if (ist->hwaccel_uninit)
3734  ist->hwaccel_uninit(ist->dec_ctx);
3735  }
3736  }
3737 
3738  /* finished ! */
3739  ret = 0;
3740 
3741  fail:
3742 #if HAVE_PTHREADS
3744 #endif
3745 
3746  if (output_streams) {
3747  for (i = 0; i < nb_output_streams; i++) {
3748  ost = output_streams[i];
3749  if (ost) {
3750  if (ost->logfile) {
3751  fclose(ost->logfile);
3752  ost->logfile = NULL;
3753  }
3754  av_freep(&ost->forced_kf_pts);
3755  av_freep(&ost->apad);
3756  av_dict_free(&ost->encoder_opts);
3757  av_dict_free(&ost->swr_opts);
3758  av_dict_free(&ost->resample_opts);
3759  }
3760  }
3761  }
3762  return ret;
3763 }
3764 
3765 
3766 static int64_t getutime(void)
3767 {
3768 #if HAVE_GETRUSAGE
3769  struct rusage rusage;
3770 
3771  getrusage(RUSAGE_SELF, &rusage);
3772  return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
3773 #elif HAVE_GETPROCESSTIMES
3774  HANDLE proc;
3775  FILETIME c, e, k, u;
3776  proc = GetCurrentProcess();
3777  GetProcessTimes(proc, &c, &e, &k, &u);
3778  return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
3779 #else
3780  return av_gettime();
3781 #endif
3782 }
3783 
3784 static int64_t getmaxrss(void)
3785 {
3786 #if HAVE_GETRUSAGE && HAVE_STRUCT_RUSAGE_RU_MAXRSS
3787  struct rusage rusage;
3788  getrusage(RUSAGE_SELF, &rusage);
3789  return (int64_t)rusage.ru_maxrss * 1024;
3790 #elif HAVE_GETPROCESSMEMORYINFO
3791  HANDLE proc;
3792  PROCESS_MEMORY_COUNTERS memcounters;
3793  proc = GetCurrentProcess();
3794  memcounters.cb = sizeof(memcounters);
3795  GetProcessMemoryInfo(proc, &memcounters, sizeof(memcounters));
3796  return memcounters.PeakPagefileUsage;
3797 #else
3798  return 0;
3799 #endif
3800 }
3801 
3802 static void log_callback_null(void *ptr, int level, const char *fmt, va_list vl)
3803 {
3804 }
3805 
3806 int main(int argc, char **argv)
3807 {
3808  int ret;
3809  int64_t ti;
3810 
3812 
3813  setvbuf(stderr,NULL,_IONBF,0); /* win32 runtime needs this */
3814 
3816  parse_loglevel(argc, argv, options);
3817 
3818  if(argc>1 && !strcmp(argv[1], "-d")){
3819  run_as_daemon=1;
3821  argc--;
3822  argv++;
3823  }
3824 
3826 #if CONFIG_AVDEVICE
3828 #endif
3830  av_register_all();
3832 
3833  show_banner(argc, argv, options);
3834 
3835  term_init();
3836 
3837  /* parse options and open all input/output files */
3838  ret = ffmpeg_parse_options(argc, argv);
3839  if (ret < 0)
3840  exit_program(1);
3841 
3842  if (nb_output_files <= 0 && nb_input_files == 0) {
3843  show_usage();
3844  av_log(NULL, AV_LOG_WARNING, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
3845  exit_program(1);
3846  }
3847 
3848  /* file converter / grab */
3849  if (nb_output_files <= 0) {
3850  av_log(NULL, AV_LOG_FATAL, "At least one output file must be specified\n");
3851  exit_program(1);
3852  }
3853 
3854 // if (nb_input_files == 0) {
3855 // av_log(NULL, AV_LOG_FATAL, "At least one input file must be specified\n");
3856 // exit_program(1);
3857 // }
3858 
3859  current_time = ti = getutime();
3860  if (transcode() < 0)
3861  exit_program(1);
3862  ti = getutime() - ti;
3863  if (do_benchmark) {
3864  printf("bench: utime=%0.3fs\n", ti / 1000000.0);
3865  }
3866  av_log(NULL, AV_LOG_DEBUG, "%"PRIu64" frames successfully decoded, %"PRIu64" decoding errors\n",
3869  exit_program(69);
3870 
3872  return main_return_code;
3873 }