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decklink_enc.cpp
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1 /*
2  * Blackmagic DeckLink output
3  * Copyright (c) 2013-2014 Ramiro Polla
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
22 #include <atomic>
23 using std::atomic;
24 
25 /* Include internal.h first to avoid conflict between winsock.h (used by
26  * DeckLink headers) and winsock2.h (used by libavformat) in MSVC++ builds */
27 extern "C" {
28 #include "libavformat/internal.h"
29 }
30 
31 #include <DeckLinkAPI.h>
32 
33 extern "C" {
34 #include "libavformat/avformat.h"
35 #include "libavutil/imgutils.h"
36 #include "avdevice.h"
37 }
38 
39 #include "decklink_common.h"
40 #include "decklink_enc.h"
41 #if CONFIG_LIBKLVANC
42 #include "libklvanc/vanc.h"
43 #include "libklvanc/vanc-lines.h"
44 #include "libklvanc/pixels.h"
45 #endif
46 
47 /* DeckLink callback class declaration */
48 class decklink_frame : public IDeckLinkVideoFrame
49 {
50 public:
52  _ctx(ctx), _avframe(avframe), _avpacket(NULL), _codec_id(codec_id), _ancillary(NULL), _height(height), _width(width), _refs(1) { }
54  _ctx(ctx), _avframe(NULL), _avpacket(avpacket), _codec_id(codec_id), _ancillary(NULL), _height(height), _width(width), _refs(1) { }
55  virtual long STDMETHODCALLTYPE GetWidth (void) { return _width; }
56  virtual long STDMETHODCALLTYPE GetHeight (void) { return _height; }
57  virtual long STDMETHODCALLTYPE GetRowBytes (void)
58  {
60  return _avframe->linesize[0] < 0 ? -_avframe->linesize[0] : _avframe->linesize[0];
61  else
62  return ((GetWidth() + 47) / 48) * 128;
63  }
64  virtual BMDPixelFormat STDMETHODCALLTYPE GetPixelFormat(void)
65  {
67  return bmdFormat8BitYUV;
68  else
69  return bmdFormat10BitYUV;
70  }
71  virtual BMDFrameFlags STDMETHODCALLTYPE GetFlags (void)
72  {
74  return _avframe->linesize[0] < 0 ? bmdFrameFlagFlipVertical : bmdFrameFlagDefault;
75  else
76  return bmdFrameFlagDefault;
77  }
78 
79  virtual HRESULT STDMETHODCALLTYPE GetBytes (void **buffer)
80  {
82  if (_avframe->linesize[0] < 0)
83  *buffer = (void *)(_avframe->data[0] + _avframe->linesize[0] * (_avframe->height - 1));
84  else
85  *buffer = (void *)(_avframe->data[0]);
86  } else {
87  *buffer = (void *)(_avpacket->data);
88  }
89  return S_OK;
90  }
91 
92  virtual HRESULT STDMETHODCALLTYPE GetTimecode (BMDTimecodeFormat format, IDeckLinkTimecode **timecode) { return S_FALSE; }
93  virtual HRESULT STDMETHODCALLTYPE GetAncillaryData(IDeckLinkVideoFrameAncillary **ancillary)
94  {
95  *ancillary = _ancillary;
96  if (_ancillary) {
97  _ancillary->AddRef();
98  return S_OK;
99  } else {
100  return S_FALSE;
101  }
102  }
103  virtual HRESULT STDMETHODCALLTYPE SetAncillaryData(IDeckLinkVideoFrameAncillary *ancillary)
104  {
105  if (_ancillary)
106  _ancillary->Release();
107  _ancillary = ancillary;
108  _ancillary->AddRef();
109  return S_OK;
110  }
111  virtual HRESULT STDMETHODCALLTYPE QueryInterface(REFIID iid, LPVOID *ppv) { return E_NOINTERFACE; }
112  virtual ULONG STDMETHODCALLTYPE AddRef(void) { return ++_refs; }
113  virtual ULONG STDMETHODCALLTYPE Release(void)
114  {
115  int ret = --_refs;
116  if (!ret) {
119  if (_ancillary)
120  _ancillary->Release();
121  delete this;
122  }
123  return ret;
124  }
125 
130  IDeckLinkVideoFrameAncillary *_ancillary;
131  int _height;
132  int _width;
133 
134 private:
135  std::atomic<int> _refs;
136 };
137 
138 class decklink_output_callback : public IDeckLinkVideoOutputCallback
139 {
140 public:
141  virtual HRESULT STDMETHODCALLTYPE ScheduledFrameCompleted(IDeckLinkVideoFrame *_frame, BMDOutputFrameCompletionResult result)
142  {
143  decklink_frame *frame = static_cast<decklink_frame *>(_frame);
144  struct decklink_ctx *ctx = frame->_ctx;
145 
146  if (frame->_avframe)
147  av_frame_unref(frame->_avframe);
148  if (frame->_avpacket)
149  av_packet_unref(frame->_avpacket);
150 
151  pthread_mutex_lock(&ctx->mutex);
155 
156  return S_OK;
157  }
158  virtual HRESULT STDMETHODCALLTYPE ScheduledPlaybackHasStopped(void) { return S_OK; }
159  virtual HRESULT STDMETHODCALLTYPE QueryInterface(REFIID iid, LPVOID *ppv) { return E_NOINTERFACE; }
160  virtual ULONG STDMETHODCALLTYPE AddRef(void) { return 1; }
161  virtual ULONG STDMETHODCALLTYPE Release(void) { return 1; }
162 };
163 
165 {
166  struct decklink_cctx *cctx = (struct decklink_cctx *)avctx->priv_data;
167  struct decklink_ctx *ctx = (struct decklink_ctx *)cctx->ctx;
169 
170  if (ctx->video) {
171  av_log(avctx, AV_LOG_ERROR, "Only one video stream is supported!\n");
172  return -1;
173  }
174 
176  if (c->format != AV_PIX_FMT_UYVY422) {
177  av_log(avctx, AV_LOG_ERROR, "Unsupported pixel format!"
178  " Only AV_PIX_FMT_UYVY422 is supported.\n");
179  return -1;
180  }
181  ctx->raw_format = bmdFormat8BitYUV;
182  } else if (c->codec_id != AV_CODEC_ID_V210) {
183  av_log(avctx, AV_LOG_ERROR, "Unsupported codec type!"
184  " Only V210 and wrapped frame with AV_PIX_FMT_UYVY422 are supported.\n");
185  return -1;
186  } else {
187  ctx->raw_format = bmdFormat10BitYUV;
188  }
189 
190  if (ff_decklink_set_configs(avctx, DIRECTION_OUT) < 0) {
191  av_log(avctx, AV_LOG_ERROR, "Could not set output configuration\n");
192  return -1;
193  }
194  if (ff_decklink_set_format(avctx, c->width, c->height,
195  st->time_base.num, st->time_base.den, c->field_order)) {
196  av_log(avctx, AV_LOG_ERROR, "Unsupported video size, framerate or field order!"
197  " Check available formats with -list_formats 1.\n");
198  return -1;
199  }
200  if (ctx->dlo->EnableVideoOutput(ctx->bmd_mode,
201  ctx->supports_vanc ? bmdVideoOutputVANC : bmdVideoOutputFlagDefault) != S_OK) {
202  av_log(avctx, AV_LOG_ERROR, "Could not enable video output!\n");
203  return -1;
204  }
205 
206  /* Set callback. */
207  ctx->output_callback = new decklink_output_callback();
208  ctx->dlo->SetScheduledFrameCompletionCallback(ctx->output_callback);
209 
210  ctx->frames_preroll = st->time_base.den * ctx->preroll;
211  if (st->time_base.den > 1000)
212  ctx->frames_preroll /= 1000;
213 
214  /* Buffer twice as many frames as the preroll. */
215  ctx->frames_buffer = ctx->frames_preroll * 2;
216  ctx->frames_buffer = FFMIN(ctx->frames_buffer, 60);
217  pthread_mutex_init(&ctx->mutex, NULL);
218  pthread_cond_init(&ctx->cond, NULL);
219  ctx->frames_buffer_available_spots = ctx->frames_buffer;
220 
221  av_log(avctx, AV_LOG_DEBUG, "output: %s, preroll: %d, frames buffer size: %d\n",
222  avctx->url, ctx->frames_preroll, ctx->frames_buffer);
223 
224  /* The device expects the framerate to be fixed. */
225  avpriv_set_pts_info(st, 64, st->time_base.num, st->time_base.den);
226 
227  ctx->video = 1;
228 
229  return 0;
230 }
231 
233 {
234  struct decklink_cctx *cctx = (struct decklink_cctx *)avctx->priv_data;
235  struct decklink_ctx *ctx = (struct decklink_ctx *)cctx->ctx;
237 
238  if (ctx->audio) {
239  av_log(avctx, AV_LOG_ERROR, "Only one audio stream is supported!\n");
240  return -1;
241  }
242  if (c->sample_rate != 48000) {
243  av_log(avctx, AV_LOG_ERROR, "Unsupported sample rate!"
244  " Only 48kHz is supported.\n");
245  return -1;
246  }
247  if (c->channels != 2 && c->channels != 8 && c->channels != 16) {
248  av_log(avctx, AV_LOG_ERROR, "Unsupported number of channels!"
249  " Only 2, 8 or 16 channels are supported.\n");
250  return -1;
251  }
252  if (ctx->dlo->EnableAudioOutput(bmdAudioSampleRate48kHz,
253  bmdAudioSampleType16bitInteger,
254  c->channels,
255  bmdAudioOutputStreamTimestamped) != S_OK) {
256  av_log(avctx, AV_LOG_ERROR, "Could not enable audio output!\n");
257  return -1;
258  }
259  if (ctx->dlo->BeginAudioPreroll() != S_OK) {
260  av_log(avctx, AV_LOG_ERROR, "Could not begin audio preroll!\n");
261  return -1;
262  }
263 
264  /* The device expects the sample rate to be fixed. */
265  avpriv_set_pts_info(st, 64, 1, c->sample_rate);
266  ctx->channels = c->channels;
267 
268  ctx->audio = 1;
269 
270  return 0;
271 }
272 
274 {
275  struct decklink_cctx *cctx = (struct decklink_cctx *)avctx->priv_data;
276  struct decklink_ctx *ctx = (struct decklink_ctx *)cctx->ctx;
277 
278  if (ctx->playback_started) {
279  BMDTimeValue actual;
280  ctx->dlo->StopScheduledPlayback(ctx->last_pts * ctx->bmd_tb_num,
281  &actual, ctx->bmd_tb_den);
282  ctx->dlo->DisableVideoOutput();
283  if (ctx->audio)
284  ctx->dlo->DisableAudioOutput();
285  }
286 
287  ff_decklink_cleanup(avctx);
288 
289  if (ctx->output_callback)
290  delete ctx->output_callback;
291 
292  pthread_mutex_destroy(&ctx->mutex);
293  pthread_cond_destroy(&ctx->cond);
294 
295 #if CONFIG_LIBKLVANC
296  klvanc_context_destroy(ctx->vanc_ctx);
297 #endif
298 
299  av_freep(&cctx->ctx);
300 
301  return 0;
302 }
303 
304 #if CONFIG_LIBKLVANC
305 static void construct_cc(AVFormatContext *avctx, struct decklink_ctx *ctx,
306  AVPacket *pkt, struct klvanc_line_set_s *vanc_lines)
307 {
308  struct klvanc_packet_eia_708b_s *cdp;
309  uint16_t *cdp_words;
310  uint16_t len;
311  uint8_t cc_count;
312  int size, ret, i;
313 
315  if (!data)
316  return;
317 
318  cc_count = size / 3;
319 
320  ret = klvanc_create_eia708_cdp(&cdp);
321  if (ret)
322  return;
323 
324  ret = klvanc_set_framerate_EIA_708B(cdp, ctx->bmd_tb_num, ctx->bmd_tb_den);
325  if (ret) {
326  av_log(avctx, AV_LOG_ERROR, "Invalid framerate specified: %lld/%lld\n",
327  ctx->bmd_tb_num, ctx->bmd_tb_den);
328  klvanc_destroy_eia708_cdp(cdp);
329  return;
330  }
331 
332  if (cc_count > KLVANC_MAX_CC_COUNT) {
333  av_log(avctx, AV_LOG_ERROR, "Illegal cc_count received: %d\n", cc_count);
334  cc_count = KLVANC_MAX_CC_COUNT;
335  }
336 
337  /* CC data */
338  cdp->header.ccdata_present = 1;
339  cdp->header.caption_service_active = 1;
340  cdp->ccdata.cc_count = cc_count;
341  for (i = 0; i < cc_count; i++) {
342  if (data [3*i] & 0x04)
343  cdp->ccdata.cc[i].cc_valid = 1;
344  cdp->ccdata.cc[i].cc_type = data[3*i] & 0x03;
345  cdp->ccdata.cc[i].cc_data[0] = data[3*i+1];
346  cdp->ccdata.cc[i].cc_data[1] = data[3*i+2];
347  }
348 
349  klvanc_finalize_EIA_708B(cdp, ctx->cdp_sequence_num++);
350  ret = klvanc_convert_EIA_708B_to_words(cdp, &cdp_words, &len);
351  klvanc_destroy_eia708_cdp(cdp);
352  if (ret != 0) {
353  av_log(avctx, AV_LOG_ERROR, "Failed converting 708 packet to words\n");
354  return;
355  }
356 
357  ret = klvanc_line_insert(ctx->vanc_ctx, vanc_lines, cdp_words, len, 11, 0);
358  free(cdp_words);
359  if (ret != 0) {
360  av_log(avctx, AV_LOG_ERROR, "VANC line insertion failed\n");
361  return;
362  }
363 }
364 
365 static int decklink_construct_vanc(AVFormatContext *avctx, struct decklink_ctx *ctx,
367 {
368  struct klvanc_line_set_s vanc_lines = { 0 };
369  int ret = 0, i;
370 
371  if (!ctx->supports_vanc)
372  return 0;
373 
374  construct_cc(avctx, ctx, pkt, &vanc_lines);
375 
376  IDeckLinkVideoFrameAncillary *vanc;
377  int result = ctx->dlo->CreateAncillaryData(bmdFormat10BitYUV, &vanc);
378  if (result != S_OK) {
379  av_log(avctx, AV_LOG_ERROR, "Failed to create vanc\n");
380  ret = AVERROR(EIO);
381  goto done;
382  }
383 
384  /* Now that we've got all the VANC lines in a nice orderly manner, generate the
385  final VANC sections for the Decklink output */
386  for (i = 0; i < vanc_lines.num_lines; i++) {
387  struct klvanc_line_s *line = vanc_lines.lines[i];
388  int real_line;
389  void *buf;
390 
391  if (!line)
392  break;
393 
394  /* FIXME: include hack for certain Decklink cards which mis-represent
395  line numbers for pSF frames */
396  real_line = line->line_number;
397 
398  result = vanc->GetBufferForVerticalBlankingLine(real_line, &buf);
399  if (result != S_OK) {
400  av_log(avctx, AV_LOG_ERROR, "Failed to get VANC line %d: %d", real_line, result);
401  continue;
402  }
403 
404  /* Generate the full line taking into account all VANC packets on that line */
405  result = klvanc_generate_vanc_line_v210(ctx->vanc_ctx, line, (uint8_t *) buf,
406  ctx->bmd_width);
407  if (result) {
408  av_log(avctx, AV_LOG_ERROR, "Failed to generate VANC line\n");
409  continue;
410  }
411  }
412 
413  result = frame->SetAncillaryData(vanc);
414  vanc->Release();
415  if (result != S_OK) {
416  av_log(avctx, AV_LOG_ERROR, "Failed to set vanc: %d", result);
417  ret = AVERROR(EIO);
418  }
419 
420 done:
421  for (i = 0; i < vanc_lines.num_lines; i++)
422  klvanc_line_free(vanc_lines.lines[i]);
423 
424  return ret;
425 }
426 #endif
427 
429 {
430  struct decklink_cctx *cctx = (struct decklink_cctx *)avctx->priv_data;
431  struct decklink_ctx *ctx = (struct decklink_ctx *)cctx->ctx;
432  AVStream *st = avctx->streams[pkt->stream_index];
433  AVFrame *avframe = NULL, *tmp = (AVFrame *)pkt->data;
434  AVPacket *avpacket = NULL;
435  decklink_frame *frame;
436  buffercount_type buffered;
437  HRESULT hr;
438 
440  if (tmp->format != AV_PIX_FMT_UYVY422 ||
441  tmp->width != ctx->bmd_width ||
442  tmp->height != ctx->bmd_height) {
443  av_log(avctx, AV_LOG_ERROR, "Got a frame with invalid pixel format or dimension.\n");
444  return AVERROR(EINVAL);
445  }
446 
447  avframe = av_frame_clone(tmp);
448  if (!avframe) {
449  av_log(avctx, AV_LOG_ERROR, "Could not clone video frame.\n");
450  return AVERROR(EIO);
451  }
452 
453  frame = new decklink_frame(ctx, avframe, st->codecpar->codec_id, avframe->height, avframe->width);
454  } else {
455  avpacket = av_packet_clone(pkt);
456  if (!avpacket) {
457  av_log(avctx, AV_LOG_ERROR, "Could not clone video frame.\n");
458  return AVERROR(EIO);
459  }
460 
461  frame = new decklink_frame(ctx, avpacket, st->codecpar->codec_id, ctx->bmd_height, ctx->bmd_width);
462 
463 #if CONFIG_LIBKLVANC
464  if (decklink_construct_vanc(avctx, ctx, pkt, frame))
465  av_log(avctx, AV_LOG_ERROR, "Failed to construct VANC\n");
466 #endif
467  }
468 
469  if (!frame) {
470  av_log(avctx, AV_LOG_ERROR, "Could not create new frame.\n");
471  av_frame_free(&avframe);
472  av_packet_free(&avpacket);
473  return AVERROR(EIO);
474  }
475 
476  /* Always keep at most one second of frames buffered. */
477  pthread_mutex_lock(&ctx->mutex);
478  while (ctx->frames_buffer_available_spots == 0) {
479  pthread_cond_wait(&ctx->cond, &ctx->mutex);
480  }
483 
484  /* Schedule frame for playback. */
485  hr = ctx->dlo->ScheduleVideoFrame((class IDeckLinkVideoFrame *) frame,
486  pkt->pts * ctx->bmd_tb_num,
487  ctx->bmd_tb_num, ctx->bmd_tb_den);
488  /* Pass ownership to DeckLink, or release on failure */
489  frame->Release();
490  if (hr != S_OK) {
491  av_log(avctx, AV_LOG_ERROR, "Could not schedule video frame."
492  " error %08x.\n", (uint32_t) hr);
493  return AVERROR(EIO);
494  }
495 
496  ctx->dlo->GetBufferedVideoFrameCount(&buffered);
497  av_log(avctx, AV_LOG_DEBUG, "Buffered video frames: %d.\n", (int) buffered);
498  if (pkt->pts > 2 && buffered <= 2)
499  av_log(avctx, AV_LOG_WARNING, "There are not enough buffered video frames."
500  " Video may misbehave!\n");
501 
502  /* Preroll video frames. */
503  if (!ctx->playback_started && pkt->pts > ctx->frames_preroll) {
504  av_log(avctx, AV_LOG_DEBUG, "Ending audio preroll.\n");
505  if (ctx->audio && ctx->dlo->EndAudioPreroll() != S_OK) {
506  av_log(avctx, AV_LOG_ERROR, "Could not end audio preroll!\n");
507  return AVERROR(EIO);
508  }
509  av_log(avctx, AV_LOG_DEBUG, "Starting scheduled playback.\n");
510  if (ctx->dlo->StartScheduledPlayback(0, ctx->bmd_tb_den, 1.0) != S_OK) {
511  av_log(avctx, AV_LOG_ERROR, "Could not start scheduled playback!\n");
512  return AVERROR(EIO);
513  }
514  ctx->playback_started = 1;
515  }
516 
517  return 0;
518 }
519 
521 {
522  struct decklink_cctx *cctx = (struct decklink_cctx *)avctx->priv_data;
523  struct decklink_ctx *ctx = (struct decklink_ctx *)cctx->ctx;
524  int sample_count = pkt->size / (ctx->channels << 1);
525  buffercount_type buffered;
526 
527  ctx->dlo->GetBufferedAudioSampleFrameCount(&buffered);
528  if (pkt->pts > 1 && !buffered)
529  av_log(avctx, AV_LOG_WARNING, "There's no buffered audio."
530  " Audio will misbehave!\n");
531 
532  if (ctx->dlo->ScheduleAudioSamples(pkt->data, sample_count, pkt->pts,
533  bmdAudioSampleRate48kHz, NULL) != S_OK) {
534  av_log(avctx, AV_LOG_ERROR, "Could not schedule audio samples.\n");
535  return AVERROR(EIO);
536  }
537 
538  return 0;
539 }
540 
541 extern "C" {
542 
544 {
545  struct decklink_cctx *cctx = (struct decklink_cctx *)avctx->priv_data;
546  struct decklink_ctx *ctx;
547  unsigned int n;
548  int ret;
549 
550  ctx = (struct decklink_ctx *) av_mallocz(sizeof(struct decklink_ctx));
551  if (!ctx)
552  return AVERROR(ENOMEM);
553  ctx->list_devices = cctx->list_devices;
554  ctx->list_formats = cctx->list_formats;
555  ctx->preroll = cctx->preroll;
556  ctx->duplex_mode = cctx->duplex_mode;
557  cctx->ctx = ctx;
558 #if CONFIG_LIBKLVANC
559  if (klvanc_context_create(&ctx->vanc_ctx) < 0) {
560  av_log(avctx, AV_LOG_ERROR, "Cannot create VANC library context\n");
561  return AVERROR(ENOMEM);
562  }
563  ctx->supports_vanc = 1;
564 #endif
565 
566  /* List available devices and exit. */
567  if (ctx->list_devices) {
568  ff_decklink_list_devices_legacy(avctx, 0, 1);
569  return AVERROR_EXIT;
570  }
571 
572  ret = ff_decklink_init_device(avctx, avctx->url);
573  if (ret < 0)
574  return ret;
575 
576  /* Get output device. */
577  if (ctx->dl->QueryInterface(IID_IDeckLinkOutput, (void **) &ctx->dlo) != S_OK) {
578  av_log(avctx, AV_LOG_ERROR, "Could not open output device from '%s'\n",
579  avctx->url);
580  ret = AVERROR(EIO);
581  goto error;
582  }
583 
584  /* List supported formats. */
585  if (ctx->list_formats) {
587  ret = AVERROR_EXIT;
588  goto error;
589  }
590 
591  /* Setup streams. */
592  ret = AVERROR(EIO);
593  for (n = 0; n < avctx->nb_streams; n++) {
594  AVStream *st = avctx->streams[n];
596  if (c->codec_type == AVMEDIA_TYPE_AUDIO) {
597  if (decklink_setup_audio(avctx, st))
598  goto error;
599  } else if (c->codec_type == AVMEDIA_TYPE_VIDEO) {
600  if (decklink_setup_video(avctx, st))
601  goto error;
602  } else {
603  av_log(avctx, AV_LOG_ERROR, "Unsupported stream type.\n");
604  goto error;
605  }
606  }
607 
608  return 0;
609 
610 error:
611  ff_decklink_cleanup(avctx);
612  return ret;
613 }
614 
616 {
617  struct decklink_cctx *cctx = (struct decklink_cctx *)avctx->priv_data;
618  struct decklink_ctx *ctx = (struct decklink_ctx *)cctx->ctx;
619  AVStream *st = avctx->streams[pkt->stream_index];
620 
621  ctx->last_pts = FFMAX(ctx->last_pts, pkt->pts);
622 
624  return decklink_write_video_packet(avctx, pkt);
625  else if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO)
626  return decklink_write_audio_packet(avctx, pkt);
627 
628  return AVERROR(EIO);
629 }
630 
632 {
633  return ff_decklink_list_devices(avctx, device_list, 0, 1);
634 }
635 
636 } /* extern "C" */
packed YUV 4:2:2, 16bpp, Cb Y0 Cr Y1
Definition: pixfmt.h:81
#define NULL
Definition: coverity.c:32
enum AVFieldOrder field_order
Video only.
Definition: avcodec.h:3981
static av_always_inline int pthread_mutex_destroy(pthread_mutex_t *mutex)
Definition: os2threads.h:108
static const char * format[]
Definition: af_aiir.c:330
#define S_OK
Definition: windows2linux.h:40
This structure describes decoded (raw) audio or video data.
Definition: frame.h:226
#define pthread_mutex_lock(a)
Definition: ffprobe.c:61
static av_always_inline int pthread_cond_wait(pthread_cond_t *cond, pthread_mutex_t *mutex)
Definition: os2threads.h:166
ptrdiff_t const GLvoid * data
Definition: opengl_enc.c:101
misc image utilities
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
void avpriv_set_pts_info(AVStream *s, int pts_wrap_bits, unsigned int pts_num, unsigned int pts_den)
Set the time base and wrapping info for a given stream.
Definition: utils.c:4882
ATSC A53 Part 4 Closed Captions.
Definition: avcodec.h:1354
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
Definition: avcodec.h:3900
int num
Numerator.
Definition: rational.h:59
int size
Definition: avcodec.h:1446
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
Definition: mem.c:236
static AVPacket pkt
static av_always_inline int pthread_cond_destroy(pthread_cond_t *cond)
Definition: os2threads.h:140
This struct describes the properties of an encoded stream.
Definition: avcodec.h:3892
Format I/O context.
Definition: avformat.h:1351
void av_packet_free(AVPacket **pkt)
Free the packet, if the packet is reference counted, it will be unreferenced first.
Definition: avpacket.c:62
uint8_t
#define av_cold
Definition: attributes.h:82
int width
Video only.
Definition: avcodec.h:3966
AVStream ** streams
A list of all streams in the file.
Definition: avformat.h:1419
static AVFrame * frame
#define height
uint8_t * data
Definition: avcodec.h:1445
ptrdiff_t size
Definition: opengl_enc.c:101
#define E_NOINTERFACE
Definition: windows2linux.h:42
#define av_log(a,...)
Main libavdevice API header.
AVCodecID
Identify the syntax and semantics of the bitstream.
Definition: avcodec.h:215
int width
Definition: frame.h:284
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
AVPacket * av_packet_clone(const AVPacket *src)
Create a new packet that references the same data as src.
Definition: avpacket.c:640
#define AVERROR(e)
Definition: error.h:43
uint8_t * av_packet_get_side_data(const AVPacket *pkt, enum AVPacketSideDataType type, int *size)
Get side information from packet.
Definition: avpacket.c:350
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:202
char * url
input or output URL.
Definition: avformat.h:1447
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:197
enum AVMediaType codec_type
General type of the encoded data.
Definition: avcodec.h:3896
Definition: graph2dot.c:48
#define FFMAX(a, b)
Definition: common.h:94
unsigned int nb_streams
Number of elements in AVFormatContext.streams.
Definition: avformat.h:1407
#define FFMIN(a, b)
Definition: common.h:96
#define width
AVFormatContext * ctx
Definition: movenc.c:48
static av_always_inline int pthread_mutex_init(pthread_mutex_t *mutex, const pthread_mutexattr_t *attr)
Definition: os2threads.h:100
int n
Definition: avisynth_c.h:684
enum AVCodecID codec_id
Definition: vaapi_decode.c:364
#define pthread_mutex_unlock(a)
Definition: ffprobe.c:65
Passthrough codec, AVFrames wrapped in AVPacket.
Definition: avcodec.h:700
#define AVERROR_EXIT
Immediate exit was requested; the called function should not be restarted.
Definition: error.h:56
static void error(const char *err)
AVFrame * av_frame_clone(const AVFrame *src)
Create a new frame that references the same data as src.
Definition: frame.c:540
Stream structure.
Definition: avformat.h:874
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:257
void * LPVOID
void av_packet_unref(AVPacket *pkt)
Wipe the packet.
Definition: avpacket.c:598
void * buf
Definition: avisynth_c.h:690
List of devices.
Definition: avdevice.h:460
void av_frame_unref(AVFrame *frame)
Unreference all the buffers referenced by frame and reset the frame fields.
Definition: frame.c:553
DWORD HRESULT
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:240
int sample_rate
Audio only.
Definition: avcodec.h:4010
Main libavformat public API header.
if(ret< 0)
Definition: vf_mcdeint.c:279
static double c[64]
uint32_t ULONG
static av_always_inline int pthread_cond_init(pthread_cond_t *cond, const pthread_condattr_t *attr)
Definition: os2threads.h:129
int den
Denominator.
Definition: rational.h:60
#define S_FALSE
Definition: windows2linux.h:41
int len
static av_always_inline int pthread_cond_broadcast(pthread_cond_t *cond)
Definition: os2threads.h:158
void * priv_data
Format private data.
Definition: avformat.h:1379
int channels
Audio only.
Definition: avcodec.h:4006
int height
Definition: frame.h:284
#define av_freep(p)
AVCodecParameters * codecpar
Codec parameters associated with this stream.
Definition: avformat.h:1021
int stream_index
Definition: avcodec.h:1447
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented...
Definition: avformat.h:903
This structure stores compressed data.
Definition: avcodec.h:1422
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
Definition: avcodec.h:1438
GLuint buffer
Definition: opengl_enc.c:102
static uint8_t tmp[11]
Definition: aes_ctr.c:26