FFmpeg  4.2.2
videotoolboxenc.c
Go to the documentation of this file.
1 /*
2  * copyright (c) 2015 Rick Kern <kernrj@gmail.com>
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 #include <VideoToolbox/VideoToolbox.h>
22 #include <CoreVideo/CoreVideo.h>
23 #include <CoreMedia/CoreMedia.h>
24 #include <TargetConditionals.h>
25 #include <Availability.h>
26 #include "avcodec.h"
27 #include "libavutil/opt.h"
28 #include "libavutil/avassert.h"
29 #include "libavutil/avstring.h"
30 #include "libavcodec/avcodec.h"
31 #include "libavutil/pixdesc.h"
32 #include "internal.h"
33 #include <pthread.h>
34 #include "h264.h"
35 #include "h264_sei.h"
36 #include <dlfcn.h>
37 
38 #if !HAVE_KCMVIDEOCODECTYPE_HEVC
39 enum { kCMVideoCodecType_HEVC = 'hvc1' };
40 #endif
41 
42 #if !HAVE_KCVPIXELFORMATTYPE_420YPCBCR10BIPLANARVIDEORANGE
45 #endif
46 
47 typedef OSStatus (*getParameterSetAtIndex)(CMFormatDescriptionRef videoDesc,
48  size_t parameterSetIndex,
49  const uint8_t **parameterSetPointerOut,
50  size_t *parameterSetSizeOut,
51  size_t *parameterSetCountOut,
52  int *NALUnitHeaderLengthOut);
53 
54 //These symbols may not be present
55 static struct{
59 
63 
83 
86 
88 
91 
93 } compat_keys;
94 
95 #define GET_SYM(symbol, defaultVal) \
96 do{ \
97  CFStringRef* handle = (CFStringRef*)dlsym(RTLD_DEFAULT, #symbol); \
98  if(!handle) \
99  compat_keys.symbol = CFSTR(defaultVal); \
100  else \
101  compat_keys.symbol = *handle; \
102 }while(0)
103 
105 
106 static void loadVTEncSymbols(){
107  compat_keys.CMVideoFormatDescriptionGetHEVCParameterSetAtIndex =
108  (getParameterSetAtIndex)dlsym(
109  RTLD_DEFAULT,
110  "CMVideoFormatDescriptionGetHEVCParameterSetAtIndex"
111  );
112 
116 
120 
121  GET_SYM(kVTProfileLevel_H264_Baseline_4_0, "H264_Baseline_4_0");
122  GET_SYM(kVTProfileLevel_H264_Baseline_4_2, "H264_Baseline_4_2");
123  GET_SYM(kVTProfileLevel_H264_Baseline_5_0, "H264_Baseline_5_0");
124  GET_SYM(kVTProfileLevel_H264_Baseline_5_1, "H264_Baseline_5_1");
125  GET_SYM(kVTProfileLevel_H264_Baseline_5_2, "H264_Baseline_5_2");
126  GET_SYM(kVTProfileLevel_H264_Baseline_AutoLevel, "H264_Baseline_AutoLevel");
127  GET_SYM(kVTProfileLevel_H264_Main_4_2, "H264_Main_4_2");
128  GET_SYM(kVTProfileLevel_H264_Main_5_1, "H264_Main_5_1");
129  GET_SYM(kVTProfileLevel_H264_Main_5_2, "H264_Main_5_2");
130  GET_SYM(kVTProfileLevel_H264_Main_AutoLevel, "H264_Main_AutoLevel");
131  GET_SYM(kVTProfileLevel_H264_High_3_0, "H264_High_3_0");
132  GET_SYM(kVTProfileLevel_H264_High_3_1, "H264_High_3_1");
133  GET_SYM(kVTProfileLevel_H264_High_3_2, "H264_High_3_2");
134  GET_SYM(kVTProfileLevel_H264_High_4_0, "H264_High_4_0");
135  GET_SYM(kVTProfileLevel_H264_High_4_1, "H264_High_4_1");
136  GET_SYM(kVTProfileLevel_H264_High_4_2, "H264_High_4_2");
137  GET_SYM(kVTProfileLevel_H264_High_5_1, "H264_High_5_1");
138  GET_SYM(kVTProfileLevel_H264_High_5_2, "H264_High_5_2");
139  GET_SYM(kVTProfileLevel_H264_High_AutoLevel, "H264_High_AutoLevel");
140 
141  GET_SYM(kVTProfileLevel_HEVC_Main_AutoLevel, "HEVC_Main_AutoLevel");
142  GET_SYM(kVTProfileLevel_HEVC_Main10_AutoLevel, "HEVC_Main10_AutoLevel");
143 
145 
147  "EnableHardwareAcceleratedVideoEncoder");
149  "RequireHardwareAcceleratedVideoEncoder");
150 }
151 
152 typedef enum VT_H264Profile {
159 
160 typedef enum VTH264Entropy{
164 } VTH264Entropy;
165 
166 typedef enum VT_HEVCProfile {
172 
173 static const uint8_t start_code[] = { 0, 0, 0, 1 };
174 
175 typedef struct ExtraSEI {
176  void *data;
177  size_t size;
178 } ExtraSEI;
179 
180 typedef struct BufNode {
181  CMSampleBufferRef cm_buffer;
183  struct BufNode* next;
184  int error;
185 } BufNode;
186 
187 typedef struct VTEncContext {
188  AVClass *class;
190  VTCompressionSessionRef session;
191  CFStringRef ycbcr_matrix;
192  CFStringRef color_primaries;
193  CFStringRef transfer_function;
195 
198 
200 
203 
204  int64_t frame_ct_out;
205  int64_t frame_ct_in;
206 
207  int64_t first_pts;
208  int64_t dts_delta;
209 
210  int64_t profile;
211  int64_t level;
212  int64_t entropy;
213  int64_t realtime;
214  int64_t frames_before;
215  int64_t frames_after;
216 
217  int64_t allow_sw;
218  int64_t require_sw;
219 
220  bool flushing;
223  bool a53_cc;
224 } VTEncContext;
225 
226 static int vtenc_populate_extradata(AVCodecContext *avctx,
227  CMVideoCodecType codec_type,
228  CFStringRef profile_level,
229  CFNumberRef gamma_level,
230  CFDictionaryRef enc_info,
231  CFDictionaryRef pixel_buffer_info);
232 
233 /**
234  * NULL-safe release of *refPtr, and sets value to NULL.
235  */
236 static void vt_release_num(CFNumberRef* refPtr){
237  if (!*refPtr) {
238  return;
239  }
240 
241  CFRelease(*refPtr);
242  *refPtr = NULL;
243 }
244 
245 static void set_async_error(VTEncContext *vtctx, int err)
246 {
247  BufNode *info;
248 
249  pthread_mutex_lock(&vtctx->lock);
250 
251  vtctx->async_error = err;
252 
253  info = vtctx->q_head;
254  vtctx->q_head = vtctx->q_tail = NULL;
255 
256  while (info) {
257  BufNode *next = info->next;
258  CFRelease(info->cm_buffer);
259  av_free(info);
260  info = next;
261  }
262 
263  pthread_mutex_unlock(&vtctx->lock);
264 }
265 
266 static void clear_frame_queue(VTEncContext *vtctx)
267 {
268  set_async_error(vtctx, 0);
269 }
270 
271 static int vtenc_q_pop(VTEncContext *vtctx, bool wait, CMSampleBufferRef *buf, ExtraSEI **sei)
272 {
273  BufNode *info;
274 
275  pthread_mutex_lock(&vtctx->lock);
276 
277  if (vtctx->async_error) {
278  pthread_mutex_unlock(&vtctx->lock);
279  return vtctx->async_error;
280  }
281 
282  if (vtctx->flushing && vtctx->frame_ct_in == vtctx->frame_ct_out) {
283  *buf = NULL;
284 
285  pthread_mutex_unlock(&vtctx->lock);
286  return 0;
287  }
288 
289  while (!vtctx->q_head && !vtctx->async_error && wait) {
290  pthread_cond_wait(&vtctx->cv_sample_sent, &vtctx->lock);
291  }
292 
293  if (!vtctx->q_head) {
294  pthread_mutex_unlock(&vtctx->lock);
295  *buf = NULL;
296  return 0;
297  }
298 
299  info = vtctx->q_head;
300  vtctx->q_head = vtctx->q_head->next;
301  if (!vtctx->q_head) {
302  vtctx->q_tail = NULL;
303  }
304 
305  pthread_mutex_unlock(&vtctx->lock);
306 
307  *buf = info->cm_buffer;
308  if (sei && *buf) {
309  *sei = info->sei;
310  } else if (info->sei) {
311  if (info->sei->data) av_free(info->sei->data);
312  av_free(info->sei);
313  }
314  av_free(info);
315 
316  vtctx->frame_ct_out++;
317 
318  return 0;
319 }
320 
321 static void vtenc_q_push(VTEncContext *vtctx, CMSampleBufferRef buffer, ExtraSEI *sei)
322 {
323  BufNode *info = av_malloc(sizeof(BufNode));
324  if (!info) {
325  set_async_error(vtctx, AVERROR(ENOMEM));
326  return;
327  }
328 
329  CFRetain(buffer);
330  info->cm_buffer = buffer;
331  info->sei = sei;
332  info->next = NULL;
333 
334  pthread_mutex_lock(&vtctx->lock);
336 
337  if (!vtctx->q_head) {
338  vtctx->q_head = info;
339  } else {
340  vtctx->q_tail->next = info;
341  }
342 
343  vtctx->q_tail = info;
344 
345  pthread_mutex_unlock(&vtctx->lock);
346 }
347 
348 static int count_nalus(size_t length_code_size,
349  CMSampleBufferRef sample_buffer,
350  int *count)
351 {
352  size_t offset = 0;
353  int status;
354  int nalu_ct = 0;
355  uint8_t size_buf[4];
356  size_t src_size = CMSampleBufferGetTotalSampleSize(sample_buffer);
357  CMBlockBufferRef block = CMSampleBufferGetDataBuffer(sample_buffer);
358 
359  if (length_code_size > 4)
360  return AVERROR_INVALIDDATA;
361 
362  while (offset < src_size) {
363  size_t curr_src_len;
364  size_t box_len = 0;
365  size_t i;
366 
367  status = CMBlockBufferCopyDataBytes(block,
368  offset,
369  length_code_size,
370  size_buf);
371 
372  for (i = 0; i < length_code_size; i++) {
373  box_len <<= 8;
374  box_len |= size_buf[i];
375  }
376 
377  curr_src_len = box_len + length_code_size;
378  offset += curr_src_len;
379 
380  nalu_ct++;
381  }
382 
383  *count = nalu_ct;
384  return 0;
385 }
386 
387 static CMVideoCodecType get_cm_codec_type(enum AVCodecID id)
388 {
389  switch (id) {
390  case AV_CODEC_ID_H264: return kCMVideoCodecType_H264;
392  default: return 0;
393  }
394 }
395 
396 /**
397  * Get the parameter sets from a CMSampleBufferRef.
398  * @param dst If *dst isn't NULL, the parameters are copied into existing
399  * memory. *dst_size must be set accordingly when *dst != NULL.
400  * If *dst is NULL, it will be allocated.
401  * In all cases, *dst_size is set to the number of bytes used starting
402  * at *dst.
403  */
404 static int get_params_size(
405  AVCodecContext *avctx,
406  CMVideoFormatDescriptionRef vid_fmt,
407  size_t *size)
408 {
409  VTEncContext *vtctx = avctx->priv_data;
410  size_t total_size = 0;
411  size_t ps_count;
412  int is_count_bad = 0;
413  size_t i;
414  int status;
415  status = vtctx->get_param_set_func(vid_fmt,
416  0,
417  NULL,
418  NULL,
419  &ps_count,
420  NULL);
421  if (status) {
422  is_count_bad = 1;
423  ps_count = 0;
424  status = 0;
425  }
426 
427  for (i = 0; i < ps_count || is_count_bad; i++) {
428  const uint8_t *ps;
429  size_t ps_size;
430  status = vtctx->get_param_set_func(vid_fmt,
431  i,
432  &ps,
433  &ps_size,
434  NULL,
435  NULL);
436  if (status) {
437  /*
438  * When ps_count is invalid, status != 0 ends the loop normally
439  * unless we didn't get any parameter sets.
440  */
441  if (i > 0 && is_count_bad) status = 0;
442 
443  break;
444  }
445 
446  total_size += ps_size + sizeof(start_code);
447  }
448 
449  if (status) {
450  av_log(avctx, AV_LOG_ERROR, "Error getting parameter set sizes: %d\n", status);
451  return AVERROR_EXTERNAL;
452  }
453 
454  *size = total_size;
455  return 0;
456 }
457 
458 static int copy_param_sets(
459  AVCodecContext *avctx,
460  CMVideoFormatDescriptionRef vid_fmt,
461  uint8_t *dst,
462  size_t dst_size)
463 {
464  VTEncContext *vtctx = avctx->priv_data;
465  size_t ps_count;
466  int is_count_bad = 0;
467  int status;
468  size_t offset = 0;
469  size_t i;
470 
471  status = vtctx->get_param_set_func(vid_fmt,
472  0,
473  NULL,
474  NULL,
475  &ps_count,
476  NULL);
477  if (status) {
478  is_count_bad = 1;
479  ps_count = 0;
480  status = 0;
481  }
482 
483 
484  for (i = 0; i < ps_count || is_count_bad; i++) {
485  const uint8_t *ps;
486  size_t ps_size;
487  size_t next_offset;
488 
489  status = vtctx->get_param_set_func(vid_fmt,
490  i,
491  &ps,
492  &ps_size,
493  NULL,
494  NULL);
495  if (status) {
496  if (i > 0 && is_count_bad) status = 0;
497 
498  break;
499  }
500 
501  next_offset = offset + sizeof(start_code) + ps_size;
502  if (dst_size < next_offset) {
503  av_log(avctx, AV_LOG_ERROR, "Error: buffer too small for parameter sets.\n");
505  }
506 
507  memcpy(dst + offset, start_code, sizeof(start_code));
508  offset += sizeof(start_code);
509 
510  memcpy(dst + offset, ps, ps_size);
511  offset = next_offset;
512  }
513 
514  if (status) {
515  av_log(avctx, AV_LOG_ERROR, "Error getting parameter set data: %d\n", status);
516  return AVERROR_EXTERNAL;
517  }
518 
519  return 0;
520 }
521 
522 static int set_extradata(AVCodecContext *avctx, CMSampleBufferRef sample_buffer)
523 {
524  CMVideoFormatDescriptionRef vid_fmt;
525  size_t total_size;
526  int status;
527 
528  vid_fmt = CMSampleBufferGetFormatDescription(sample_buffer);
529  if (!vid_fmt) {
530  av_log(avctx, AV_LOG_ERROR, "No video format.\n");
531  return AVERROR_EXTERNAL;
532  }
533 
534  status = get_params_size(avctx, vid_fmt, &total_size);
535  if (status) {
536  av_log(avctx, AV_LOG_ERROR, "Could not get parameter sets.\n");
537  return status;
538  }
539 
540  avctx->extradata = av_mallocz(total_size + AV_INPUT_BUFFER_PADDING_SIZE);
541  if (!avctx->extradata) {
542  return AVERROR(ENOMEM);
543  }
544  avctx->extradata_size = total_size;
545 
546  status = copy_param_sets(avctx, vid_fmt, avctx->extradata, total_size);
547 
548  if (status) {
549  av_log(avctx, AV_LOG_ERROR, "Could not copy param sets.\n");
550  return status;
551  }
552 
553  return 0;
554 }
555 
557  void *ctx,
558  void *sourceFrameCtx,
559  OSStatus status,
560  VTEncodeInfoFlags flags,
561  CMSampleBufferRef sample_buffer)
562 {
563  AVCodecContext *avctx = ctx;
564  VTEncContext *vtctx = avctx->priv_data;
565  ExtraSEI *sei = sourceFrameCtx;
566 
567  if (vtctx->async_error) {
568  if(sample_buffer) CFRelease(sample_buffer);
569  return;
570  }
571 
572  if (status || !sample_buffer) {
573  av_log(avctx, AV_LOG_ERROR, "Error encoding frame: %d\n", (int)status);
575  return;
576  }
577 
578  if (!avctx->extradata && (avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER)) {
579  int set_status = set_extradata(avctx, sample_buffer);
580  if (set_status) {
581  set_async_error(vtctx, set_status);
582  return;
583  }
584  }
585 
586  vtenc_q_push(vtctx, sample_buffer, sei);
587 }
588 
590  AVCodecContext *avctx,
591  CMSampleBufferRef sample_buffer,
592  size_t *size)
593 {
594  VTEncContext *vtctx = avctx->priv_data;
595  CMVideoFormatDescriptionRef vid_fmt;
596  int isize;
597  int status;
598 
599  vid_fmt = CMSampleBufferGetFormatDescription(sample_buffer);
600  if (!vid_fmt) {
601  av_log(avctx, AV_LOG_ERROR, "Error getting buffer format description.\n");
602  return AVERROR_EXTERNAL;
603  }
604 
605  status = vtctx->get_param_set_func(vid_fmt,
606  0,
607  NULL,
608  NULL,
609  NULL,
610  &isize);
611  if (status) {
612  av_log(avctx, AV_LOG_ERROR, "Error getting length code size: %d\n", status);
613  return AVERROR_EXTERNAL;
614  }
615 
616  *size = isize;
617  return 0;
618 }
619 
620 /*
621  * Returns true on success.
622  *
623  * If profile_level_val is NULL and this method returns true, don't specify the
624  * profile/level to the encoder.
625  */
627  CFStringRef *profile_level_val)
628 {
629  VTEncContext *vtctx = avctx->priv_data;
630  int64_t profile = vtctx->profile;
631 
632  if (profile == H264_PROF_AUTO && vtctx->level) {
633  //Need to pick a profile if level is not auto-selected.
634  profile = vtctx->has_b_frames ? H264_PROF_MAIN : H264_PROF_BASELINE;
635  }
636 
637  *profile_level_val = NULL;
638 
639  switch (profile) {
640  case H264_PROF_AUTO:
641  return true;
642 
643  case H264_PROF_BASELINE:
644  switch (vtctx->level) {
645  case 0: *profile_level_val =
646  compat_keys.kVTProfileLevel_H264_Baseline_AutoLevel; break;
647  case 13: *profile_level_val = kVTProfileLevel_H264_Baseline_1_3; break;
648  case 30: *profile_level_val = kVTProfileLevel_H264_Baseline_3_0; break;
649  case 31: *profile_level_val = kVTProfileLevel_H264_Baseline_3_1; break;
650  case 32: *profile_level_val = kVTProfileLevel_H264_Baseline_3_2; break;
651  case 40: *profile_level_val =
652  compat_keys.kVTProfileLevel_H264_Baseline_4_0; break;
653  case 41: *profile_level_val = kVTProfileLevel_H264_Baseline_4_1; break;
654  case 42: *profile_level_val =
655  compat_keys.kVTProfileLevel_H264_Baseline_4_2; break;
656  case 50: *profile_level_val =
657  compat_keys.kVTProfileLevel_H264_Baseline_5_0; break;
658  case 51: *profile_level_val =
659  compat_keys.kVTProfileLevel_H264_Baseline_5_1; break;
660  case 52: *profile_level_val =
661  compat_keys.kVTProfileLevel_H264_Baseline_5_2; break;
662  }
663  break;
664 
665  case H264_PROF_MAIN:
666  switch (vtctx->level) {
667  case 0: *profile_level_val =
668  compat_keys.kVTProfileLevel_H264_Main_AutoLevel; break;
669  case 30: *profile_level_val = kVTProfileLevel_H264_Main_3_0; break;
670  case 31: *profile_level_val = kVTProfileLevel_H264_Main_3_1; break;
671  case 32: *profile_level_val = kVTProfileLevel_H264_Main_3_2; break;
672  case 40: *profile_level_val = kVTProfileLevel_H264_Main_4_0; break;
673  case 41: *profile_level_val = kVTProfileLevel_H264_Main_4_1; break;
674  case 42: *profile_level_val =
675  compat_keys.kVTProfileLevel_H264_Main_4_2; break;
676  case 50: *profile_level_val = kVTProfileLevel_H264_Main_5_0; break;
677  case 51: *profile_level_val =
678  compat_keys.kVTProfileLevel_H264_Main_5_1; break;
679  case 52: *profile_level_val =
680  compat_keys.kVTProfileLevel_H264_Main_5_2; break;
681  }
682  break;
683 
684  case H264_PROF_HIGH:
685  switch (vtctx->level) {
686  case 0: *profile_level_val =
687  compat_keys.kVTProfileLevel_H264_High_AutoLevel; break;
688  case 30: *profile_level_val =
689  compat_keys.kVTProfileLevel_H264_High_3_0; break;
690  case 31: *profile_level_val =
691  compat_keys.kVTProfileLevel_H264_High_3_1; break;
692  case 32: *profile_level_val =
693  compat_keys.kVTProfileLevel_H264_High_3_2; break;
694  case 40: *profile_level_val =
695  compat_keys.kVTProfileLevel_H264_High_4_0; break;
696  case 41: *profile_level_val =
697  compat_keys.kVTProfileLevel_H264_High_4_1; break;
698  case 42: *profile_level_val =
699  compat_keys.kVTProfileLevel_H264_High_4_2; break;
700  case 50: *profile_level_val = kVTProfileLevel_H264_High_5_0; break;
701  case 51: *profile_level_val =
702  compat_keys.kVTProfileLevel_H264_High_5_1; break;
703  case 52: *profile_level_val =
704  compat_keys.kVTProfileLevel_H264_High_5_2; break;
705  }
706  break;
707  }
708 
709  if (!*profile_level_val) {
710  av_log(avctx, AV_LOG_ERROR, "Invalid Profile/Level.\n");
711  return false;
712  }
713 
714  return true;
715 }
716 
717 /*
718  * Returns true on success.
719  *
720  * If profile_level_val is NULL and this method returns true, don't specify the
721  * profile/level to the encoder.
722  */
724  CFStringRef *profile_level_val)
725 {
726  VTEncContext *vtctx = avctx->priv_data;
727  int64_t profile = vtctx->profile;
728 
729  *profile_level_val = NULL;
730 
731  switch (profile) {
732  case HEVC_PROF_AUTO:
733  return true;
734  case HEVC_PROF_MAIN:
735  *profile_level_val =
736  compat_keys.kVTProfileLevel_HEVC_Main_AutoLevel;
737  break;
738  case HEVC_PROF_MAIN10:
739  *profile_level_val =
740  compat_keys.kVTProfileLevel_HEVC_Main10_AutoLevel;
741  break;
742  }
743 
744  if (!*profile_level_val) {
745  av_log(avctx, AV_LOG_ERROR, "Invalid Profile/Level.\n");
746  return false;
747  }
748 
749  return true;
750 }
751 
753  enum AVPixelFormat fmt,
754  enum AVColorRange range,
755  int* av_pixel_format,
756  int* range_guessed)
757 {
758  if (range_guessed) *range_guessed = range != AVCOL_RANGE_MPEG &&
759  range != AVCOL_RANGE_JPEG;
760 
761  //MPEG range is used when no range is set
762  if (fmt == AV_PIX_FMT_NV12) {
763  *av_pixel_format = range == AVCOL_RANGE_JPEG ?
764  kCVPixelFormatType_420YpCbCr8BiPlanarFullRange :
765  kCVPixelFormatType_420YpCbCr8BiPlanarVideoRange;
766  } else if (fmt == AV_PIX_FMT_YUV420P) {
767  *av_pixel_format = range == AVCOL_RANGE_JPEG ?
768  kCVPixelFormatType_420YpCbCr8PlanarFullRange :
769  kCVPixelFormatType_420YpCbCr8Planar;
770  } else if (fmt == AV_PIX_FMT_P010LE) {
771  *av_pixel_format = range == AVCOL_RANGE_JPEG ?
775  } else {
776  return AVERROR(EINVAL);
777  }
778 
779  return 0;
780 }
781 
782 static void add_color_attr(AVCodecContext *avctx, CFMutableDictionaryRef dict) {
783  VTEncContext *vtctx = avctx->priv_data;
784 
785  if (vtctx->color_primaries) {
786  CFDictionarySetValue(dict,
787  kCVImageBufferColorPrimariesKey,
788  vtctx->color_primaries);
789  }
790 
791  if (vtctx->transfer_function) {
792  CFDictionarySetValue(dict,
793  kCVImageBufferTransferFunctionKey,
794  vtctx->transfer_function);
795  }
796 
797  if (vtctx->ycbcr_matrix) {
798  CFDictionarySetValue(dict,
799  kCVImageBufferYCbCrMatrixKey,
800  vtctx->ycbcr_matrix);
801  }
802 }
803 
805  CFMutableDictionaryRef* dict)
806 {
807  CFNumberRef cv_color_format_num = NULL;
808  CFNumberRef width_num = NULL;
809  CFNumberRef height_num = NULL;
810  CFMutableDictionaryRef pixel_buffer_info = NULL;
811  int cv_color_format;
812  int status = get_cv_pixel_format(avctx,
813  avctx->pix_fmt,
814  avctx->color_range,
815  &cv_color_format,
816  NULL);
817  if (status) return status;
818 
819  pixel_buffer_info = CFDictionaryCreateMutable(
820  kCFAllocatorDefault,
821  20,
822  &kCFCopyStringDictionaryKeyCallBacks,
823  &kCFTypeDictionaryValueCallBacks);
824 
825  if (!pixel_buffer_info) goto pbinfo_nomem;
826 
827  cv_color_format_num = CFNumberCreate(kCFAllocatorDefault,
828  kCFNumberSInt32Type,
829  &cv_color_format);
830  if (!cv_color_format_num) goto pbinfo_nomem;
831 
832  CFDictionarySetValue(pixel_buffer_info,
833  kCVPixelBufferPixelFormatTypeKey,
834  cv_color_format_num);
835  vt_release_num(&cv_color_format_num);
836 
837  width_num = CFNumberCreate(kCFAllocatorDefault,
838  kCFNumberSInt32Type,
839  &avctx->width);
840  if (!width_num) return AVERROR(ENOMEM);
841 
842  CFDictionarySetValue(pixel_buffer_info,
843  kCVPixelBufferWidthKey,
844  width_num);
845  vt_release_num(&width_num);
846 
847  height_num = CFNumberCreate(kCFAllocatorDefault,
848  kCFNumberSInt32Type,
849  &avctx->height);
850  if (!height_num) goto pbinfo_nomem;
851 
852  CFDictionarySetValue(pixel_buffer_info,
853  kCVPixelBufferHeightKey,
854  height_num);
855  vt_release_num(&height_num);
856 
857  add_color_attr(avctx, pixel_buffer_info);
858 
859  *dict = pixel_buffer_info;
860  return 0;
861 
862 pbinfo_nomem:
863  vt_release_num(&cv_color_format_num);
864  vt_release_num(&width_num);
865  vt_release_num(&height_num);
866  if (pixel_buffer_info) CFRelease(pixel_buffer_info);
867 
868  return AVERROR(ENOMEM);
869 }
870 
872  CFStringRef *primaries)
873 {
874  enum AVColorPrimaries pri = avctx->color_primaries;
875  switch (pri) {
877  *primaries = NULL;
878  break;
879 
880  case AVCOL_PRI_BT709:
881  *primaries = kCVImageBufferColorPrimaries_ITU_R_709_2;
882  break;
883 
884  case AVCOL_PRI_BT2020:
885  *primaries = compat_keys.kCVImageBufferColorPrimaries_ITU_R_2020;
886  break;
887 
888  default:
889  av_log(avctx, AV_LOG_ERROR, "Color primaries %s is not supported.\n", av_color_primaries_name(pri));
890  *primaries = NULL;
891  return -1;
892  }
893 
894  return 0;
895 }
896 
898  CFStringRef *transfer_fnc,
899  CFNumberRef *gamma_level)
900 {
901  enum AVColorTransferCharacteristic trc = avctx->color_trc;
902  Float32 gamma;
903  *gamma_level = NULL;
904 
905  switch (trc) {
907  *transfer_fnc = NULL;
908  break;
909 
910  case AVCOL_TRC_BT709:
911  *transfer_fnc = kCVImageBufferTransferFunction_ITU_R_709_2;
912  break;
913 
914  case AVCOL_TRC_SMPTE240M:
915  *transfer_fnc = kCVImageBufferTransferFunction_SMPTE_240M_1995;
916  break;
917 
918  case AVCOL_TRC_GAMMA22:
919  gamma = 2.2;
920  *transfer_fnc = kCVImageBufferTransferFunction_UseGamma;
921  *gamma_level = CFNumberCreate(NULL, kCFNumberFloat32Type, &gamma);
922  break;
923 
924  case AVCOL_TRC_GAMMA28:
925  gamma = 2.8;
926  *transfer_fnc = kCVImageBufferTransferFunction_UseGamma;
927  *gamma_level = CFNumberCreate(NULL, kCFNumberFloat32Type, &gamma);
928  break;
929 
930  case AVCOL_TRC_BT2020_10:
931  case AVCOL_TRC_BT2020_12:
932  *transfer_fnc = compat_keys.kCVImageBufferTransferFunction_ITU_R_2020;
933  break;
934 
935  default:
936  av_log(avctx, AV_LOG_ERROR, "Transfer function %s is not supported.\n", av_color_transfer_name(trc));
937  return -1;
938  }
939 
940  return 0;
941 }
942 
943 static int get_cv_ycbcr_matrix(AVCodecContext *avctx, CFStringRef *matrix) {
944  switch(avctx->colorspace) {
945  case AVCOL_SPC_BT709:
946  *matrix = kCVImageBufferYCbCrMatrix_ITU_R_709_2;
947  break;
948 
950  *matrix = NULL;
951  break;
952 
953  case AVCOL_SPC_BT470BG:
954  case AVCOL_SPC_SMPTE170M:
955  *matrix = kCVImageBufferYCbCrMatrix_ITU_R_601_4;
956  break;
957 
958  case AVCOL_SPC_SMPTE240M:
959  *matrix = kCVImageBufferYCbCrMatrix_SMPTE_240M_1995;
960  break;
961 
963  *matrix = compat_keys.kCVImageBufferYCbCrMatrix_ITU_R_2020;
964  break;
965 
966  default:
967  av_log(avctx, AV_LOG_ERROR, "Color space %s is not supported.\n", av_color_space_name(avctx->colorspace));
968  return -1;
969  }
970 
971  return 0;
972 }
973 
975  CMVideoCodecType codec_type,
976  CFStringRef profile_level,
977  CFNumberRef gamma_level,
978  CFDictionaryRef enc_info,
979  CFDictionaryRef pixel_buffer_info,
980  VTCompressionSessionRef *session)
981 {
982  VTEncContext *vtctx = avctx->priv_data;
983  SInt32 bit_rate = avctx->bit_rate;
984  SInt32 max_rate = avctx->rc_max_rate;
985  CFNumberRef bit_rate_num;
986  CFNumberRef bytes_per_second;
987  CFNumberRef one_second;
988  CFArrayRef data_rate_limits;
989  int64_t bytes_per_second_value = 0;
990  int64_t one_second_value = 0;
991  void *nums[2];
992 
993  int status = VTCompressionSessionCreate(kCFAllocatorDefault,
994  avctx->width,
995  avctx->height,
996  codec_type,
997  enc_info,
998  pixel_buffer_info,
999  kCFAllocatorDefault,
1001  avctx,
1002  session);
1003 
1004  if (status || !vtctx->session) {
1005  av_log(avctx, AV_LOG_ERROR, "Error: cannot create compression session: %d\n", status);
1006 
1007 #if !TARGET_OS_IPHONE
1008  if (!vtctx->allow_sw) {
1009  av_log(avctx, AV_LOG_ERROR, "Try -allow_sw 1. The hardware encoder may be busy, or not supported.\n");
1010  }
1011 #endif
1012 
1013  return AVERROR_EXTERNAL;
1014  }
1015 
1016  bit_rate_num = CFNumberCreate(kCFAllocatorDefault,
1017  kCFNumberSInt32Type,
1018  &bit_rate);
1019  if (!bit_rate_num) return AVERROR(ENOMEM);
1020 
1021  status = VTSessionSetProperty(vtctx->session,
1022  kVTCompressionPropertyKey_AverageBitRate,
1023  bit_rate_num);
1024  CFRelease(bit_rate_num);
1025 
1026  if (status) {
1027  av_log(avctx, AV_LOG_ERROR, "Error setting bitrate property: %d\n", status);
1028  return AVERROR_EXTERNAL;
1029  }
1030 
1031  if (vtctx->codec_id == AV_CODEC_ID_H264 && max_rate > 0) {
1032  // kVTCompressionPropertyKey_DataRateLimits is not available for HEVC
1033  bytes_per_second_value = max_rate >> 3;
1034  bytes_per_second = CFNumberCreate(kCFAllocatorDefault,
1035  kCFNumberSInt64Type,
1036  &bytes_per_second_value);
1037  if (!bytes_per_second) {
1038  return AVERROR(ENOMEM);
1039  }
1040  one_second_value = 1;
1041  one_second = CFNumberCreate(kCFAllocatorDefault,
1042  kCFNumberSInt64Type,
1043  &one_second_value);
1044  if (!one_second) {
1045  CFRelease(bytes_per_second);
1046  return AVERROR(ENOMEM);
1047  }
1048  nums[0] = (void *)bytes_per_second;
1049  nums[1] = (void *)one_second;
1050  data_rate_limits = CFArrayCreate(kCFAllocatorDefault,
1051  (const void **)nums,
1052  2,
1053  &kCFTypeArrayCallBacks);
1054 
1055  if (!data_rate_limits) {
1056  CFRelease(bytes_per_second);
1057  CFRelease(one_second);
1058  return AVERROR(ENOMEM);
1059  }
1060  status = VTSessionSetProperty(vtctx->session,
1061  kVTCompressionPropertyKey_DataRateLimits,
1062  data_rate_limits);
1063 
1064  CFRelease(bytes_per_second);
1065  CFRelease(one_second);
1066  CFRelease(data_rate_limits);
1067 
1068  if (status) {
1069  av_log(avctx, AV_LOG_ERROR, "Error setting max bitrate property: %d\n", status);
1070  return AVERROR_EXTERNAL;
1071  }
1072  }
1073 
1074  if (vtctx->codec_id == AV_CODEC_ID_H264) {
1075  // kVTCompressionPropertyKey_ProfileLevel is not available for HEVC
1076  if (profile_level) {
1077  status = VTSessionSetProperty(vtctx->session,
1078  kVTCompressionPropertyKey_ProfileLevel,
1079  profile_level);
1080  if (status) {
1081  av_log(avctx, AV_LOG_ERROR, "Error setting profile/level property: %d\n", status);
1082  }
1083  }
1084  }
1085 
1086  if (avctx->gop_size > 0) {
1087  CFNumberRef interval = CFNumberCreate(kCFAllocatorDefault,
1088  kCFNumberIntType,
1089  &avctx->gop_size);
1090  if (!interval) {
1091  return AVERROR(ENOMEM);
1092  }
1093 
1094  status = VTSessionSetProperty(vtctx->session,
1095  kVTCompressionPropertyKey_MaxKeyFrameInterval,
1096  interval);
1097  CFRelease(interval);
1098 
1099  if (status) {
1100  av_log(avctx, AV_LOG_ERROR, "Error setting 'max key-frame interval' property: %d\n", status);
1101  return AVERROR_EXTERNAL;
1102  }
1103  }
1104 
1105  if (vtctx->frames_before) {
1106  status = VTSessionSetProperty(vtctx->session,
1107  kVTCompressionPropertyKey_MoreFramesBeforeStart,
1108  kCFBooleanTrue);
1109 
1110  if (status == kVTPropertyNotSupportedErr) {
1111  av_log(avctx, AV_LOG_WARNING, "frames_before property is not supported on this device. Ignoring.\n");
1112  } else if (status) {
1113  av_log(avctx, AV_LOG_ERROR, "Error setting frames_before property: %d\n", status);
1114  }
1115  }
1116 
1117  if (vtctx->frames_after) {
1118  status = VTSessionSetProperty(vtctx->session,
1119  kVTCompressionPropertyKey_MoreFramesAfterEnd,
1120  kCFBooleanTrue);
1121 
1122  if (status == kVTPropertyNotSupportedErr) {
1123  av_log(avctx, AV_LOG_WARNING, "frames_after property is not supported on this device. Ignoring.\n");
1124  } else if (status) {
1125  av_log(avctx, AV_LOG_ERROR, "Error setting frames_after property: %d\n", status);
1126  }
1127  }
1128 
1129  if (avctx->sample_aspect_ratio.num != 0) {
1130  CFNumberRef num;
1131  CFNumberRef den;
1132  CFMutableDictionaryRef par;
1133  AVRational *avpar = &avctx->sample_aspect_ratio;
1134 
1135  av_reduce(&avpar->num, &avpar->den,
1136  avpar->num, avpar->den,
1137  0xFFFFFFFF);
1138 
1139  num = CFNumberCreate(kCFAllocatorDefault,
1140  kCFNumberIntType,
1141  &avpar->num);
1142 
1143  den = CFNumberCreate(kCFAllocatorDefault,
1144  kCFNumberIntType,
1145  &avpar->den);
1146 
1147 
1148 
1149  par = CFDictionaryCreateMutable(kCFAllocatorDefault,
1150  2,
1151  &kCFCopyStringDictionaryKeyCallBacks,
1152  &kCFTypeDictionaryValueCallBacks);
1153 
1154  if (!par || !num || !den) {
1155  if (par) CFRelease(par);
1156  if (num) CFRelease(num);
1157  if (den) CFRelease(den);
1158 
1159  return AVERROR(ENOMEM);
1160  }
1161 
1162  CFDictionarySetValue(
1163  par,
1164  kCMFormatDescriptionKey_PixelAspectRatioHorizontalSpacing,
1165  num);
1166 
1167  CFDictionarySetValue(
1168  par,
1169  kCMFormatDescriptionKey_PixelAspectRatioVerticalSpacing,
1170  den);
1171 
1172  status = VTSessionSetProperty(vtctx->session,
1173  kVTCompressionPropertyKey_PixelAspectRatio,
1174  par);
1175 
1176  CFRelease(par);
1177  CFRelease(num);
1178  CFRelease(den);
1179 
1180  if (status) {
1181  av_log(avctx,
1182  AV_LOG_ERROR,
1183  "Error setting pixel aspect ratio to %d:%d: %d.\n",
1184  avctx->sample_aspect_ratio.num,
1185  avctx->sample_aspect_ratio.den,
1186  status);
1187 
1188  return AVERROR_EXTERNAL;
1189  }
1190  }
1191 
1192 
1193  if (vtctx->transfer_function) {
1194  status = VTSessionSetProperty(vtctx->session,
1195  kVTCompressionPropertyKey_TransferFunction,
1196  vtctx->transfer_function);
1197 
1198  if (status) {
1199  av_log(avctx, AV_LOG_WARNING, "Could not set transfer function: %d\n", status);
1200  }
1201  }
1202 
1203 
1204  if (vtctx->ycbcr_matrix) {
1205  status = VTSessionSetProperty(vtctx->session,
1206  kVTCompressionPropertyKey_YCbCrMatrix,
1207  vtctx->ycbcr_matrix);
1208 
1209  if (status) {
1210  av_log(avctx, AV_LOG_WARNING, "Could not set ycbcr matrix: %d\n", status);
1211  }
1212  }
1213 
1214 
1215  if (vtctx->color_primaries) {
1216  status = VTSessionSetProperty(vtctx->session,
1217  kVTCompressionPropertyKey_ColorPrimaries,
1218  vtctx->color_primaries);
1219 
1220  if (status) {
1221  av_log(avctx, AV_LOG_WARNING, "Could not set color primaries: %d\n", status);
1222  }
1223  }
1224 
1225  if (gamma_level) {
1226  status = VTSessionSetProperty(vtctx->session,
1227  kCVImageBufferGammaLevelKey,
1228  gamma_level);
1229 
1230  if (status) {
1231  av_log(avctx, AV_LOG_WARNING, "Could not set gamma level: %d\n", status);
1232  }
1233  }
1234 
1235  if (!vtctx->has_b_frames) {
1236  status = VTSessionSetProperty(vtctx->session,
1237  kVTCompressionPropertyKey_AllowFrameReordering,
1238  kCFBooleanFalse);
1239 
1240  if (status) {
1241  av_log(avctx, AV_LOG_ERROR, "Error setting 'allow frame reordering' property: %d\n", status);
1242  return AVERROR_EXTERNAL;
1243  }
1244  }
1245 
1246  if (vtctx->entropy != VT_ENTROPY_NOT_SET) {
1247  CFStringRef entropy = vtctx->entropy == VT_CABAC ?
1248  compat_keys.kVTH264EntropyMode_CABAC:
1249  compat_keys.kVTH264EntropyMode_CAVLC;
1250 
1251  status = VTSessionSetProperty(vtctx->session,
1252  compat_keys.kVTCompressionPropertyKey_H264EntropyMode,
1253  entropy);
1254 
1255  if (status) {
1256  av_log(avctx, AV_LOG_ERROR, "Error setting entropy property: %d\n", status);
1257  }
1258  }
1259 
1260  if (vtctx->realtime) {
1261  status = VTSessionSetProperty(vtctx->session,
1262  compat_keys.kVTCompressionPropertyKey_RealTime,
1263  kCFBooleanTrue);
1264 
1265  if (status) {
1266  av_log(avctx, AV_LOG_ERROR, "Error setting realtime property: %d\n", status);
1267  }
1268  }
1269 
1270  status = VTCompressionSessionPrepareToEncodeFrames(vtctx->session);
1271  if (status) {
1272  av_log(avctx, AV_LOG_ERROR, "Error: cannot prepare encoder: %d\n", status);
1273  return AVERROR_EXTERNAL;
1274  }
1275 
1276  return 0;
1277 }
1278 
1280 {
1281  CFMutableDictionaryRef enc_info;
1282  CFMutableDictionaryRef pixel_buffer_info;
1283  CMVideoCodecType codec_type;
1284  VTEncContext *vtctx = avctx->priv_data;
1285  CFStringRef profile_level;
1286  CFNumberRef gamma_level = NULL;
1287  int status;
1288 
1289  codec_type = get_cm_codec_type(avctx->codec_id);
1290  if (!codec_type) {
1291  av_log(avctx, AV_LOG_ERROR, "Error: no mapping for AVCodecID %d\n", avctx->codec_id);
1292  return AVERROR(EINVAL);
1293  }
1294 
1295  vtctx->codec_id = avctx->codec_id;
1296 
1297  if (vtctx->codec_id == AV_CODEC_ID_H264) {
1298  vtctx->get_param_set_func = CMVideoFormatDescriptionGetH264ParameterSetAtIndex;
1299 
1300  vtctx->has_b_frames = avctx->max_b_frames > 0;
1301  if(vtctx->has_b_frames && vtctx->profile == H264_PROF_BASELINE){
1302  av_log(avctx, AV_LOG_WARNING, "Cannot use B-frames with baseline profile. Output will not contain B-frames.\n");
1303  vtctx->has_b_frames = false;
1304  }
1305 
1306  if (vtctx->entropy == VT_CABAC && vtctx->profile == H264_PROF_BASELINE) {
1307  av_log(avctx, AV_LOG_WARNING, "CABAC entropy requires 'main' or 'high' profile, but baseline was requested. Encode will not use CABAC entropy.\n");
1308  vtctx->entropy = VT_ENTROPY_NOT_SET;
1309  }
1310 
1311  if (!get_vt_h264_profile_level(avctx, &profile_level)) return AVERROR(EINVAL);
1312  } else {
1313  vtctx->get_param_set_func = compat_keys.CMVideoFormatDescriptionGetHEVCParameterSetAtIndex;
1314  if (!vtctx->get_param_set_func) return AVERROR(EINVAL);
1315  if (!get_vt_hevc_profile_level(avctx, &profile_level)) return AVERROR(EINVAL);
1316  }
1317 
1318  enc_info = CFDictionaryCreateMutable(
1319  kCFAllocatorDefault,
1320  20,
1321  &kCFCopyStringDictionaryKeyCallBacks,
1322  &kCFTypeDictionaryValueCallBacks
1323  );
1324 
1325  if (!enc_info) return AVERROR(ENOMEM);
1326 
1327 #if !TARGET_OS_IPHONE
1328  if(vtctx->require_sw) {
1329  CFDictionarySetValue(enc_info,
1330  compat_keys.kVTVideoEncoderSpecification_EnableHardwareAcceleratedVideoEncoder,
1331  kCFBooleanFalse);
1332  } else if (!vtctx->allow_sw) {
1333  CFDictionarySetValue(enc_info,
1334  compat_keys.kVTVideoEncoderSpecification_RequireHardwareAcceleratedVideoEncoder,
1335  kCFBooleanTrue);
1336  } else {
1337  CFDictionarySetValue(enc_info,
1338  compat_keys.kVTVideoEncoderSpecification_EnableHardwareAcceleratedVideoEncoder,
1339  kCFBooleanTrue);
1340  }
1341 #endif
1342 
1343  if (avctx->pix_fmt != AV_PIX_FMT_VIDEOTOOLBOX) {
1344  status = create_cv_pixel_buffer_info(avctx, &pixel_buffer_info);
1345  if (status)
1346  goto init_cleanup;
1347  } else {
1348  pixel_buffer_info = NULL;
1349  }
1350 
1351  vtctx->dts_delta = vtctx->has_b_frames ? -1 : 0;
1352 
1353  get_cv_transfer_function(avctx, &vtctx->transfer_function, &gamma_level);
1354  get_cv_ycbcr_matrix(avctx, &vtctx->ycbcr_matrix);
1355  get_cv_color_primaries(avctx, &vtctx->color_primaries);
1356 
1357 
1358  if (avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER) {
1359  status = vtenc_populate_extradata(avctx,
1360  codec_type,
1361  profile_level,
1362  gamma_level,
1363  enc_info,
1364  pixel_buffer_info);
1365  if (status)
1366  goto init_cleanup;
1367  }
1368 
1369  status = vtenc_create_encoder(avctx,
1370  codec_type,
1371  profile_level,
1372  gamma_level,
1373  enc_info,
1374  pixel_buffer_info,
1375  &vtctx->session);
1376 
1377 init_cleanup:
1378  if (gamma_level)
1379  CFRelease(gamma_level);
1380 
1381  if (pixel_buffer_info)
1382  CFRelease(pixel_buffer_info);
1383 
1384  CFRelease(enc_info);
1385 
1386  return status;
1387 }
1388 
1390 {
1391  VTEncContext *vtctx = avctx->priv_data;
1392  CFBooleanRef has_b_frames_cfbool;
1393  int status;
1394 
1395  pthread_once(&once_ctrl, loadVTEncSymbols);
1396 
1397  pthread_mutex_init(&vtctx->lock, NULL);
1399 
1400  vtctx->session = NULL;
1401  status = vtenc_configure_encoder(avctx);
1402  if (status) return status;
1403 
1404  status = VTSessionCopyProperty(vtctx->session,
1405  kVTCompressionPropertyKey_AllowFrameReordering,
1406  kCFAllocatorDefault,
1407  &has_b_frames_cfbool);
1408 
1409  if (!status && has_b_frames_cfbool) {
1410  //Some devices don't output B-frames for main profile, even if requested.
1411  vtctx->has_b_frames = CFBooleanGetValue(has_b_frames_cfbool);
1412  CFRelease(has_b_frames_cfbool);
1413  }
1414  avctx->has_b_frames = vtctx->has_b_frames;
1415 
1416  return 0;
1417 }
1418 
1419 static void vtenc_get_frame_info(CMSampleBufferRef buffer, bool *is_key_frame)
1420 {
1421  CFArrayRef attachments;
1422  CFDictionaryRef attachment;
1423  CFBooleanRef not_sync;
1424  CFIndex len;
1425 
1426  attachments = CMSampleBufferGetSampleAttachmentsArray(buffer, false);
1427  len = !attachments ? 0 : CFArrayGetCount(attachments);
1428 
1429  if (!len) {
1430  *is_key_frame = true;
1431  return;
1432  }
1433 
1434  attachment = CFArrayGetValueAtIndex(attachments, 0);
1435 
1436  if (CFDictionaryGetValueIfPresent(attachment,
1437  kCMSampleAttachmentKey_NotSync,
1438  (const void **)&not_sync))
1439  {
1440  *is_key_frame = !CFBooleanGetValue(not_sync);
1441  } else {
1442  *is_key_frame = true;
1443  }
1444 }
1445 
1446 static int is_post_sei_nal_type(int nal_type){
1447  return nal_type != H264_NAL_SEI &&
1448  nal_type != H264_NAL_SPS &&
1449  nal_type != H264_NAL_PPS &&
1450  nal_type != H264_NAL_AUD;
1451 }
1452 
1453 /*
1454  * Finds the sei message start/size of type find_sei_type.
1455  * If more than one of that type exists, the last one is returned.
1456  */
1457 static int find_sei_end(AVCodecContext *avctx,
1458  uint8_t *nal_data,
1459  size_t nal_size,
1460  uint8_t **sei_end)
1461 {
1462  int nal_type;
1463  size_t sei_payload_size = 0;
1464  int sei_payload_type = 0;
1465  *sei_end = NULL;
1466  uint8_t *nal_start = nal_data;
1467 
1468  if (!nal_size)
1469  return 0;
1470 
1471  nal_type = *nal_data & 0x1F;
1472  if (nal_type != H264_NAL_SEI)
1473  return 0;
1474 
1475  nal_data++;
1476  nal_size--;
1477 
1478  if (nal_data[nal_size - 1] == 0x80)
1479  nal_size--;
1480 
1481  while (nal_size > 0 && *nal_data > 0) {
1482  do{
1483  sei_payload_type += *nal_data;
1484  nal_data++;
1485  nal_size--;
1486  } while (nal_size > 0 && *nal_data == 0xFF);
1487 
1488  if (!nal_size) {
1489  av_log(avctx, AV_LOG_ERROR, "Unexpected end of SEI NAL Unit parsing type.\n");
1490  return AVERROR_INVALIDDATA;
1491  }
1492 
1493  do{
1494  sei_payload_size += *nal_data;
1495  nal_data++;
1496  nal_size--;
1497  } while (nal_size > 0 && *nal_data == 0xFF);
1498 
1499  if (nal_size < sei_payload_size) {
1500  av_log(avctx, AV_LOG_ERROR, "Unexpected end of SEI NAL Unit parsing size.\n");
1501  return AVERROR_INVALIDDATA;
1502  }
1503 
1504  nal_data += sei_payload_size;
1505  nal_size -= sei_payload_size;
1506  }
1507 
1508  *sei_end = nal_data;
1509 
1510  return nal_data - nal_start + 1;
1511 }
1512 
1513 /**
1514  * Copies the data inserting emulation prevention bytes as needed.
1515  * Existing data in the destination can be taken into account by providing
1516  * dst with a dst_offset > 0.
1517  *
1518  * @return The number of bytes copied on success. On failure, the negative of
1519  * the number of bytes needed to copy src is returned.
1520  */
1521 static int copy_emulation_prev(const uint8_t *src,
1522  size_t src_size,
1523  uint8_t *dst,
1524  ssize_t dst_offset,
1525  size_t dst_size)
1526 {
1527  int zeros = 0;
1528  int wrote_bytes;
1529  uint8_t* dst_start;
1530  uint8_t* dst_end = dst + dst_size;
1531  const uint8_t* src_end = src + src_size;
1532  int start_at = dst_offset > 2 ? dst_offset - 2 : 0;
1533  int i;
1534  for (i = start_at; i < dst_offset && i < dst_size; i++) {
1535  if (!dst[i])
1536  zeros++;
1537  else
1538  zeros = 0;
1539  }
1540 
1541  dst += dst_offset;
1542  dst_start = dst;
1543  for (; src < src_end; src++, dst++) {
1544  if (zeros == 2) {
1545  int insert_ep3_byte = *src <= 3;
1546  if (insert_ep3_byte) {
1547  if (dst < dst_end)
1548  *dst = 3;
1549  dst++;
1550  }
1551 
1552  zeros = 0;
1553  }
1554 
1555  if (dst < dst_end)
1556  *dst = *src;
1557 
1558  if (!*src)
1559  zeros++;
1560  else
1561  zeros = 0;
1562  }
1563 
1564  wrote_bytes = dst - dst_start;
1565 
1566  if (dst > dst_end)
1567  return -wrote_bytes;
1568 
1569  return wrote_bytes;
1570 }
1571 
1572 static int write_sei(const ExtraSEI *sei,
1573  int sei_type,
1574  uint8_t *dst,
1575  size_t dst_size)
1576 {
1577  uint8_t *sei_start = dst;
1578  size_t remaining_sei_size = sei->size;
1579  size_t remaining_dst_size = dst_size;
1580  int header_bytes;
1581  int bytes_written;
1582  ssize_t offset;
1583 
1584  if (!remaining_dst_size)
1585  return AVERROR_BUFFER_TOO_SMALL;
1586 
1587  while (sei_type && remaining_dst_size != 0) {
1588  int sei_byte = sei_type > 255 ? 255 : sei_type;
1589  *dst = sei_byte;
1590 
1591  sei_type -= sei_byte;
1592  dst++;
1593  remaining_dst_size--;
1594  }
1595 
1596  if (!dst_size)
1597  return AVERROR_BUFFER_TOO_SMALL;
1598 
1599  while (remaining_sei_size && remaining_dst_size != 0) {
1600  int size_byte = remaining_sei_size > 255 ? 255 : remaining_sei_size;
1601  *dst = size_byte;
1602 
1603  remaining_sei_size -= size_byte;
1604  dst++;
1605  remaining_dst_size--;
1606  }
1607 
1608  if (remaining_dst_size < sei->size)
1609  return AVERROR_BUFFER_TOO_SMALL;
1610 
1611  header_bytes = dst - sei_start;
1612 
1613  offset = header_bytes;
1614  bytes_written = copy_emulation_prev(sei->data,
1615  sei->size,
1616  sei_start,
1617  offset,
1618  dst_size);
1619  if (bytes_written < 0)
1620  return AVERROR_BUFFER_TOO_SMALL;
1621 
1622  bytes_written += header_bytes;
1623  return bytes_written;
1624 }
1625 
1626 /**
1627  * Copies NAL units and replaces length codes with
1628  * H.264 Annex B start codes. On failure, the contents of
1629  * dst_data may have been modified.
1630  *
1631  * @param length_code_size Byte length of each length code
1632  * @param sample_buffer NAL units prefixed with length codes.
1633  * @param sei Optional A53 closed captions SEI data.
1634  * @param dst_data Must be zeroed before calling this function.
1635  * Contains the copied NAL units prefixed with
1636  * start codes when the function returns
1637  * successfully.
1638  * @param dst_size Length of dst_data
1639  * @return 0 on success
1640  * AVERROR_INVALIDDATA if length_code_size is invalid
1641  * AVERROR_BUFFER_TOO_SMALL if dst_data is too small
1642  * or if a length_code in src_data specifies data beyond
1643  * the end of its buffer.
1644  */
1646  AVCodecContext *avctx,
1647  size_t length_code_size,
1648  CMSampleBufferRef sample_buffer,
1649  ExtraSEI *sei,
1650  uint8_t *dst_data,
1651  size_t dst_size)
1652 {
1653  size_t src_size = CMSampleBufferGetTotalSampleSize(sample_buffer);
1654  size_t remaining_src_size = src_size;
1655  size_t remaining_dst_size = dst_size;
1656  size_t src_offset = 0;
1657  int wrote_sei = 0;
1658  int status;
1659  uint8_t size_buf[4];
1660  uint8_t nal_type;
1661  CMBlockBufferRef block = CMSampleBufferGetDataBuffer(sample_buffer);
1662 
1663  if (length_code_size > 4) {
1664  return AVERROR_INVALIDDATA;
1665  }
1666 
1667  while (remaining_src_size > 0) {
1668  size_t curr_src_len;
1669  size_t curr_dst_len;
1670  size_t box_len = 0;
1671  size_t i;
1672 
1673  uint8_t *dst_box;
1674 
1675  status = CMBlockBufferCopyDataBytes(block,
1676  src_offset,
1677  length_code_size,
1678  size_buf);
1679  if (status) {
1680  av_log(avctx, AV_LOG_ERROR, "Cannot copy length: %d\n", status);
1681  return AVERROR_EXTERNAL;
1682  }
1683 
1684  status = CMBlockBufferCopyDataBytes(block,
1685  src_offset + length_code_size,
1686  1,
1687  &nal_type);
1688 
1689  if (status) {
1690  av_log(avctx, AV_LOG_ERROR, "Cannot copy type: %d\n", status);
1691  return AVERROR_EXTERNAL;
1692  }
1693 
1694  nal_type &= 0x1F;
1695 
1696  for (i = 0; i < length_code_size; i++) {
1697  box_len <<= 8;
1698  box_len |= size_buf[i];
1699  }
1700 
1701  if (sei && !wrote_sei && is_post_sei_nal_type(nal_type)) {
1702  //No SEI NAL unit - insert.
1703  int wrote_bytes;
1704 
1705  memcpy(dst_data, start_code, sizeof(start_code));
1706  dst_data += sizeof(start_code);
1707  remaining_dst_size -= sizeof(start_code);
1708 
1709  *dst_data = H264_NAL_SEI;
1710  dst_data++;
1711  remaining_dst_size--;
1712 
1713  wrote_bytes = write_sei(sei,
1715  dst_data,
1716  remaining_dst_size);
1717 
1718  if (wrote_bytes < 0)
1719  return wrote_bytes;
1720 
1721  remaining_dst_size -= wrote_bytes;
1722  dst_data += wrote_bytes;
1723 
1724  if (remaining_dst_size <= 0)
1725  return AVERROR_BUFFER_TOO_SMALL;
1726 
1727  *dst_data = 0x80;
1728 
1729  dst_data++;
1730  remaining_dst_size--;
1731 
1732  wrote_sei = 1;
1733  }
1734 
1735  curr_src_len = box_len + length_code_size;
1736  curr_dst_len = box_len + sizeof(start_code);
1737 
1738  if (remaining_src_size < curr_src_len) {
1739  return AVERROR_BUFFER_TOO_SMALL;
1740  }
1741 
1742  if (remaining_dst_size < curr_dst_len) {
1743  return AVERROR_BUFFER_TOO_SMALL;
1744  }
1745 
1746  dst_box = dst_data + sizeof(start_code);
1747 
1748  memcpy(dst_data, start_code, sizeof(start_code));
1749  status = CMBlockBufferCopyDataBytes(block,
1750  src_offset + length_code_size,
1751  box_len,
1752  dst_box);
1753 
1754  if (status) {
1755  av_log(avctx, AV_LOG_ERROR, "Cannot copy data: %d\n", status);
1756  return AVERROR_EXTERNAL;
1757  }
1758 
1759  if (sei && !wrote_sei && nal_type == H264_NAL_SEI) {
1760  //Found SEI NAL unit - append.
1761  int wrote_bytes;
1762  int old_sei_length;
1763  int extra_bytes;
1764  uint8_t *new_sei;
1765  old_sei_length = find_sei_end(avctx, dst_box, box_len, &new_sei);
1766  if (old_sei_length < 0)
1767  return status;
1768 
1769  wrote_bytes = write_sei(sei,
1771  new_sei,
1772  remaining_dst_size - old_sei_length);
1773  if (wrote_bytes < 0)
1774  return wrote_bytes;
1775 
1776  if (new_sei + wrote_bytes >= dst_data + remaining_dst_size)
1777  return AVERROR_BUFFER_TOO_SMALL;
1778 
1779  new_sei[wrote_bytes++] = 0x80;
1780  extra_bytes = wrote_bytes - (dst_box + box_len - new_sei);
1781 
1782  dst_data += extra_bytes;
1783  remaining_dst_size -= extra_bytes;
1784 
1785  wrote_sei = 1;
1786  }
1787 
1788  src_offset += curr_src_len;
1789  dst_data += curr_dst_len;
1790 
1791  remaining_src_size -= curr_src_len;
1792  remaining_dst_size -= curr_dst_len;
1793  }
1794 
1795  return 0;
1796 }
1797 
1798 /**
1799  * Returns a sufficient number of bytes to contain the sei data.
1800  * It may be greater than the minimum required.
1801  */
1802 static int get_sei_msg_bytes(const ExtraSEI* sei, int type){
1803  int copied_size;
1804  if (sei->size == 0)
1805  return 0;
1806 
1807  copied_size = -copy_emulation_prev(sei->data,
1808  sei->size,
1809  NULL,
1810  0,
1811  0);
1812 
1813  if ((sei->size % 255) == 0) //may result in an extra byte
1814  copied_size++;
1815 
1816  return copied_size + sei->size / 255 + 1 + type / 255 + 1;
1817 }
1818 
1820  AVCodecContext *avctx,
1821  CMSampleBufferRef sample_buffer,
1822  AVPacket *pkt,
1823  ExtraSEI *sei)
1824 {
1825  VTEncContext *vtctx = avctx->priv_data;
1826 
1827  int status;
1828  bool is_key_frame;
1829  bool add_header;
1830  size_t length_code_size;
1831  size_t header_size = 0;
1832  size_t in_buf_size;
1833  size_t out_buf_size;
1834  size_t sei_nalu_size = 0;
1835  int64_t dts_delta;
1836  int64_t time_base_num;
1837  int nalu_count;
1838  CMTime pts;
1839  CMTime dts;
1840  CMVideoFormatDescriptionRef vid_fmt;
1841 
1842 
1843  vtenc_get_frame_info(sample_buffer, &is_key_frame);
1844  status = get_length_code_size(avctx, sample_buffer, &length_code_size);
1845  if (status) return status;
1846 
1847  add_header = is_key_frame && !(avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER);
1848 
1849  if (add_header) {
1850  vid_fmt = CMSampleBufferGetFormatDescription(sample_buffer);
1851  if (!vid_fmt) {
1852  av_log(avctx, AV_LOG_ERROR, "Cannot get format description.\n");
1853  return AVERROR_EXTERNAL;
1854  }
1855 
1856  int status = get_params_size(avctx, vid_fmt, &header_size);
1857  if (status) return status;
1858  }
1859 
1860  status = count_nalus(length_code_size, sample_buffer, &nalu_count);
1861  if(status)
1862  return status;
1863 
1864  if (sei) {
1865  size_t msg_size = get_sei_msg_bytes(sei,
1867 
1868  sei_nalu_size = sizeof(start_code) + 1 + msg_size + 1;
1869  }
1870 
1871  in_buf_size = CMSampleBufferGetTotalSampleSize(sample_buffer);
1872  out_buf_size = header_size +
1873  in_buf_size +
1874  sei_nalu_size +
1875  nalu_count * ((int)sizeof(start_code) - (int)length_code_size);
1876 
1877  status = ff_alloc_packet2(avctx, pkt, out_buf_size, out_buf_size);
1878  if (status < 0)
1879  return status;
1880 
1881  if (add_header) {
1882  status = copy_param_sets(avctx, vid_fmt, pkt->data, out_buf_size);
1883  if(status) return status;
1884  }
1885 
1886  status = copy_replace_length_codes(
1887  avctx,
1888  length_code_size,
1889  sample_buffer,
1890  sei,
1891  pkt->data + header_size,
1892  pkt->size - header_size
1893  );
1894 
1895  if (status) {
1896  av_log(avctx, AV_LOG_ERROR, "Error copying packet data: %d\n", status);
1897  return status;
1898  }
1899 
1900  if (is_key_frame) {
1901  pkt->flags |= AV_PKT_FLAG_KEY;
1902  }
1903 
1904  pts = CMSampleBufferGetPresentationTimeStamp(sample_buffer);
1905  dts = CMSampleBufferGetDecodeTimeStamp (sample_buffer);
1906 
1907  if (CMTIME_IS_INVALID(dts)) {
1908  if (!vtctx->has_b_frames) {
1909  dts = pts;
1910  } else {
1911  av_log(avctx, AV_LOG_ERROR, "DTS is invalid.\n");
1912  return AVERROR_EXTERNAL;
1913  }
1914  }
1915 
1916  dts_delta = vtctx->dts_delta >= 0 ? vtctx->dts_delta : 0;
1917  time_base_num = avctx->time_base.num;
1918  pkt->pts = pts.value / time_base_num;
1919  pkt->dts = dts.value / time_base_num - dts_delta;
1920  pkt->size = out_buf_size;
1921 
1922  return 0;
1923 }
1924 
1925 /*
1926  * contiguous_buf_size is 0 if not contiguous, and the size of the buffer
1927  * containing all planes if so.
1928  */
1930  AVCodecContext *avctx,
1931  const AVFrame *frame,
1932  int *color,
1933  int *plane_count,
1934  size_t *widths,
1935  size_t *heights,
1936  size_t *strides,
1937  size_t *contiguous_buf_size)
1938 {
1939  VTEncContext *vtctx = avctx->priv_data;
1940  int av_format = frame->format;
1941  int av_color_range = frame->color_range;
1942  int i;
1943  int range_guessed;
1944  int status;
1945 
1946  status = get_cv_pixel_format(avctx, av_format, av_color_range, color, &range_guessed);
1947  if (status) {
1948  av_log(avctx,
1949  AV_LOG_ERROR,
1950  "Could not get pixel format for color format '%s' range '%s'.\n",
1951  av_get_pix_fmt_name(av_format),
1952  av_color_range > AVCOL_RANGE_UNSPECIFIED &&
1953  av_color_range < AVCOL_RANGE_NB ?
1954  av_color_range_name(av_color_range) :
1955  "Unknown");
1956 
1957  return AVERROR(EINVAL);
1958  }
1959 
1960  if (range_guessed) {
1961  if (!vtctx->warned_color_range) {
1962  vtctx->warned_color_range = true;
1963  av_log(avctx,
1965  "Color range not set for %s. Using MPEG range.\n",
1966  av_get_pix_fmt_name(av_format));
1967  }
1968  }
1969 
1970  switch (av_format) {
1971  case AV_PIX_FMT_NV12:
1972  *plane_count = 2;
1973 
1974  widths [0] = avctx->width;
1975  heights[0] = avctx->height;
1976  strides[0] = frame ? frame->linesize[0] : avctx->width;
1977 
1978  widths [1] = (avctx->width + 1) / 2;
1979  heights[1] = (avctx->height + 1) / 2;
1980  strides[1] = frame ? frame->linesize[1] : (avctx->width + 1) & -2;
1981  break;
1982 
1983  case AV_PIX_FMT_YUV420P:
1984  *plane_count = 3;
1985 
1986  widths [0] = avctx->width;
1987  heights[0] = avctx->height;
1988  strides[0] = frame ? frame->linesize[0] : avctx->width;
1989 
1990  widths [1] = (avctx->width + 1) / 2;
1991  heights[1] = (avctx->height + 1) / 2;
1992  strides[1] = frame ? frame->linesize[1] : (avctx->width + 1) / 2;
1993 
1994  widths [2] = (avctx->width + 1) / 2;
1995  heights[2] = (avctx->height + 1) / 2;
1996  strides[2] = frame ? frame->linesize[2] : (avctx->width + 1) / 2;
1997  break;
1998 
1999  case AV_PIX_FMT_P010LE:
2000  *plane_count = 2;
2001  widths[0] = avctx->width;
2002  heights[0] = avctx->height;
2003  strides[0] = frame ? frame->linesize[0] : (avctx->width * 2 + 63) & -64;
2004 
2005  widths[1] = (avctx->width + 1) / 2;
2006  heights[1] = (avctx->height + 1) / 2;
2007  strides[1] = frame ? frame->linesize[1] : ((avctx->width + 1) / 2 + 63) & -64;
2008  break;
2009 
2010  default:
2011  av_log(
2012  avctx,
2013  AV_LOG_ERROR,
2014  "Could not get frame format info for color %d range %d.\n",
2015  av_format,
2016  av_color_range);
2017 
2018  return AVERROR(EINVAL);
2019  }
2020 
2021  *contiguous_buf_size = 0;
2022  for (i = 0; i < *plane_count; i++) {
2023  if (i < *plane_count - 1 &&
2024  frame->data[i] + strides[i] * heights[i] != frame->data[i + 1]) {
2025  *contiguous_buf_size = 0;
2026  break;
2027  }
2028 
2029  *contiguous_buf_size += strides[i] * heights[i];
2030  }
2031 
2032  return 0;
2033 }
2034 
2035 //Not used on OSX - frame is never copied.
2037  const AVFrame *frame,
2038  CVPixelBufferRef cv_img,
2039  const size_t *plane_strides,
2040  const size_t *plane_rows)
2041 {
2042  int i, j;
2043  size_t plane_count;
2044  int status;
2045  int rows;
2046  int src_stride;
2047  int dst_stride;
2048  uint8_t *src_addr;
2049  uint8_t *dst_addr;
2050  size_t copy_bytes;
2051 
2052  status = CVPixelBufferLockBaseAddress(cv_img, 0);
2053  if (status) {
2054  av_log(
2055  avctx,
2056  AV_LOG_ERROR,
2057  "Error: Could not lock base address of CVPixelBuffer: %d.\n",
2058  status
2059  );
2060  }
2061 
2062  if (CVPixelBufferIsPlanar(cv_img)) {
2063  plane_count = CVPixelBufferGetPlaneCount(cv_img);
2064  for (i = 0; frame->data[i]; i++) {
2065  if (i == plane_count) {
2066  CVPixelBufferUnlockBaseAddress(cv_img, 0);
2067  av_log(avctx,
2068  AV_LOG_ERROR,
2069  "Error: different number of planes in AVFrame and CVPixelBuffer.\n"
2070  );
2071 
2072  return AVERROR_EXTERNAL;
2073  }
2074 
2075  dst_addr = (uint8_t*)CVPixelBufferGetBaseAddressOfPlane(cv_img, i);
2076  src_addr = (uint8_t*)frame->data[i];
2077  dst_stride = CVPixelBufferGetBytesPerRowOfPlane(cv_img, i);
2078  src_stride = plane_strides[i];
2079  rows = plane_rows[i];
2080 
2081  if (dst_stride == src_stride) {
2082  memcpy(dst_addr, src_addr, src_stride * rows);
2083  } else {
2084  copy_bytes = dst_stride < src_stride ? dst_stride : src_stride;
2085 
2086  for (j = 0; j < rows; j++) {
2087  memcpy(dst_addr + j * dst_stride, src_addr + j * src_stride, copy_bytes);
2088  }
2089  }
2090  }
2091  } else {
2092  if (frame->data[1]) {
2093  CVPixelBufferUnlockBaseAddress(cv_img, 0);
2094  av_log(avctx,
2095  AV_LOG_ERROR,
2096  "Error: different number of planes in AVFrame and non-planar CVPixelBuffer.\n"
2097  );
2098 
2099  return AVERROR_EXTERNAL;
2100  }
2101 
2102  dst_addr = (uint8_t*)CVPixelBufferGetBaseAddress(cv_img);
2103  src_addr = (uint8_t*)frame->data[0];
2104  dst_stride = CVPixelBufferGetBytesPerRow(cv_img);
2105  src_stride = plane_strides[0];
2106  rows = plane_rows[0];
2107 
2108  if (dst_stride == src_stride) {
2109  memcpy(dst_addr, src_addr, src_stride * rows);
2110  } else {
2111  copy_bytes = dst_stride < src_stride ? dst_stride : src_stride;
2112 
2113  for (j = 0; j < rows; j++) {
2114  memcpy(dst_addr + j * dst_stride, src_addr + j * src_stride, copy_bytes);
2115  }
2116  }
2117  }
2118 
2119  status = CVPixelBufferUnlockBaseAddress(cv_img, 0);
2120  if (status) {
2121  av_log(avctx, AV_LOG_ERROR, "Error: Could not unlock CVPixelBuffer base address: %d.\n", status);
2122  return AVERROR_EXTERNAL;
2123  }
2124 
2125  return 0;
2126 }
2127 
2129  const AVFrame *frame,
2130  CVPixelBufferRef *cv_img)
2131 {
2132  int plane_count;
2133  int color;
2134  size_t widths [AV_NUM_DATA_POINTERS];
2135  size_t heights[AV_NUM_DATA_POINTERS];
2136  size_t strides[AV_NUM_DATA_POINTERS];
2137  int status;
2138  size_t contiguous_buf_size;
2139  CVPixelBufferPoolRef pix_buf_pool;
2140  VTEncContext* vtctx = avctx->priv_data;
2141 
2142  if (avctx->pix_fmt == AV_PIX_FMT_VIDEOTOOLBOX) {
2144 
2145  *cv_img = (CVPixelBufferRef)frame->data[3];
2146  av_assert0(*cv_img);
2147 
2148  CFRetain(*cv_img);
2149  return 0;
2150  }
2151 
2152  memset(widths, 0, sizeof(widths));
2153  memset(heights, 0, sizeof(heights));
2154  memset(strides, 0, sizeof(strides));
2155 
2156  status = get_cv_pixel_info(
2157  avctx,
2158  frame,
2159  &color,
2160  &plane_count,
2161  widths,
2162  heights,
2163  strides,
2164  &contiguous_buf_size
2165  );
2166 
2167  if (status) {
2168  av_log(
2169  avctx,
2170  AV_LOG_ERROR,
2171  "Error: Cannot convert format %d color_range %d: %d\n",
2172  frame->format,
2173  frame->color_range,
2174  status
2175  );
2176 
2177  return AVERROR_EXTERNAL;
2178  }
2179 
2180  pix_buf_pool = VTCompressionSessionGetPixelBufferPool(vtctx->session);
2181  if (!pix_buf_pool) {
2182  /* On iOS, the VT session is invalidated when the APP switches from
2183  * foreground to background and vice versa. Fetch the actual error code
2184  * of the VT session to detect that case and restart the VT session
2185  * accordingly. */
2186  OSStatus vtstatus;
2187 
2188  vtstatus = VTCompressionSessionPrepareToEncodeFrames(vtctx->session);
2189  if (vtstatus == kVTInvalidSessionErr) {
2190  CFRelease(vtctx->session);
2191  vtctx->session = NULL;
2192  status = vtenc_configure_encoder(avctx);
2193  if (status == 0)
2194  pix_buf_pool = VTCompressionSessionGetPixelBufferPool(vtctx->session);
2195  }
2196  if (!pix_buf_pool) {
2197  av_log(avctx, AV_LOG_ERROR, "Could not get pixel buffer pool.\n");
2198  return AVERROR_EXTERNAL;
2199  }
2200  else
2201  av_log(avctx, AV_LOG_WARNING, "VT session restarted because of a "
2202  "kVTInvalidSessionErr error.\n");
2203  }
2204 
2205  status = CVPixelBufferPoolCreatePixelBuffer(NULL,
2206  pix_buf_pool,
2207  cv_img);
2208 
2209 
2210  if (status) {
2211  av_log(avctx, AV_LOG_ERROR, "Could not create pixel buffer from pool: %d.\n", status);
2212  return AVERROR_EXTERNAL;
2213  }
2214 
2215  status = copy_avframe_to_pixel_buffer(avctx, frame, *cv_img, strides, heights);
2216  if (status) {
2217  CFRelease(*cv_img);
2218  *cv_img = NULL;
2219  return status;
2220  }
2221 
2222  return 0;
2223 }
2224 
2226  CFDictionaryRef* dict_out)
2227 {
2228  CFDictionaryRef dict = NULL;
2229  if (frame->pict_type == AV_PICTURE_TYPE_I) {
2230  const void *keys[] = { kVTEncodeFrameOptionKey_ForceKeyFrame };
2231  const void *vals[] = { kCFBooleanTrue };
2232 
2233  dict = CFDictionaryCreate(NULL, keys, vals, 1, NULL, NULL);
2234  if(!dict) return AVERROR(ENOMEM);
2235  }
2236 
2237  *dict_out = dict;
2238  return 0;
2239 }
2240 
2242  VTEncContext *vtctx,
2243  const AVFrame *frame)
2244 {
2245  CMTime time;
2246  CFDictionaryRef frame_dict;
2247  CVPixelBufferRef cv_img = NULL;
2248  AVFrameSideData *side_data = NULL;
2249  ExtraSEI *sei = NULL;
2250  int status = create_cv_pixel_buffer(avctx, frame, &cv_img);
2251 
2252  if (status) return status;
2253 
2254  status = create_encoder_dict_h264(frame, &frame_dict);
2255  if (status) {
2256  CFRelease(cv_img);
2257  return status;
2258  }
2259 
2260  side_data = av_frame_get_side_data(frame, AV_FRAME_DATA_A53_CC);
2261  if (vtctx->a53_cc && side_data && side_data->size) {
2262  sei = av_mallocz(sizeof(*sei));
2263  if (!sei) {
2264  av_log(avctx, AV_LOG_ERROR, "Not enough memory for closed captions, skipping\n");
2265  } else {
2266  int ret = ff_alloc_a53_sei(frame, 0, &sei->data, &sei->size);
2267  if (ret < 0) {
2268  av_log(avctx, AV_LOG_ERROR, "Not enough memory for closed captions, skipping\n");
2269  av_free(sei);
2270  sei = NULL;
2271  }
2272  }
2273  }
2274 
2275  time = CMTimeMake(frame->pts * avctx->time_base.num, avctx->time_base.den);
2276  status = VTCompressionSessionEncodeFrame(
2277  vtctx->session,
2278  cv_img,
2279  time,
2280  kCMTimeInvalid,
2281  frame_dict,
2282  sei,
2283  NULL
2284  );
2285 
2286  if (frame_dict) CFRelease(frame_dict);
2287  CFRelease(cv_img);
2288 
2289  if (status) {
2290  av_log(avctx, AV_LOG_ERROR, "Error: cannot encode frame: %d\n", status);
2291  return AVERROR_EXTERNAL;
2292  }
2293 
2294  return 0;
2295 }
2296 
2298  AVCodecContext *avctx,
2299  AVPacket *pkt,
2300  const AVFrame *frame,
2301  int *got_packet)
2302 {
2303  VTEncContext *vtctx = avctx->priv_data;
2304  bool get_frame;
2305  int status;
2306  CMSampleBufferRef buf = NULL;
2307  ExtraSEI *sei = NULL;
2308 
2309  if (frame) {
2310  status = vtenc_send_frame(avctx, vtctx, frame);
2311 
2312  if (status) {
2313  status = AVERROR_EXTERNAL;
2314  goto end_nopkt;
2315  }
2316 
2317  if (vtctx->frame_ct_in == 0) {
2318  vtctx->first_pts = frame->pts;
2319  } else if(vtctx->frame_ct_in == 1 && vtctx->has_b_frames) {
2320  vtctx->dts_delta = frame->pts - vtctx->first_pts;
2321  }
2322 
2323  vtctx->frame_ct_in++;
2324  } else if(!vtctx->flushing) {
2325  vtctx->flushing = true;
2326 
2327  status = VTCompressionSessionCompleteFrames(vtctx->session,
2328  kCMTimeIndefinite);
2329 
2330  if (status) {
2331  av_log(avctx, AV_LOG_ERROR, "Error flushing frames: %d\n", status);
2332  status = AVERROR_EXTERNAL;
2333  goto end_nopkt;
2334  }
2335  }
2336 
2337  *got_packet = 0;
2338  get_frame = vtctx->dts_delta >= 0 || !frame;
2339  if (!get_frame) {
2340  status = 0;
2341  goto end_nopkt;
2342  }
2343 
2344  status = vtenc_q_pop(vtctx, !frame, &buf, &sei);
2345  if (status) goto end_nopkt;
2346  if (!buf) goto end_nopkt;
2347 
2348  status = vtenc_cm_to_avpacket(avctx, buf, pkt, sei);
2349  if (sei) {
2350  if (sei->data) av_free(sei->data);
2351  av_free(sei);
2352  }
2353  CFRelease(buf);
2354  if (status) goto end_nopkt;
2355 
2356  *got_packet = 1;
2357  return 0;
2358 
2359 end_nopkt:
2360  av_packet_unref(pkt);
2361  return status;
2362 }
2363 
2365  CMVideoCodecType codec_type,
2366  CFStringRef profile_level,
2367  CFNumberRef gamma_level,
2368  CFDictionaryRef enc_info,
2369  CFDictionaryRef pixel_buffer_info)
2370 {
2371  VTEncContext *vtctx = avctx->priv_data;
2372  int status;
2373  CVPixelBufferPoolRef pool = NULL;
2374  CVPixelBufferRef pix_buf = NULL;
2375  CMTime time;
2376  CMSampleBufferRef buf = NULL;
2377 
2378  status = vtenc_create_encoder(avctx,
2379  codec_type,
2380  profile_level,
2381  gamma_level,
2382  enc_info,
2383  pixel_buffer_info,
2384  &vtctx->session);
2385  if (status)
2386  goto pe_cleanup;
2387 
2388  pool = VTCompressionSessionGetPixelBufferPool(vtctx->session);
2389  if(!pool){
2390  av_log(avctx, AV_LOG_ERROR, "Error getting pixel buffer pool.\n");
2391  goto pe_cleanup;
2392  }
2393 
2394  status = CVPixelBufferPoolCreatePixelBuffer(NULL,
2395  pool,
2396  &pix_buf);
2397 
2398  if(status != kCVReturnSuccess){
2399  av_log(avctx, AV_LOG_ERROR, "Error creating frame from pool: %d\n", status);
2400  goto pe_cleanup;
2401  }
2402 
2403  time = CMTimeMake(0, avctx->time_base.den);
2404  status = VTCompressionSessionEncodeFrame(vtctx->session,
2405  pix_buf,
2406  time,
2407  kCMTimeInvalid,
2408  NULL,
2409  NULL,
2410  NULL);
2411 
2412  if (status) {
2413  av_log(avctx,
2414  AV_LOG_ERROR,
2415  "Error sending frame for extradata: %d\n",
2416  status);
2417 
2418  goto pe_cleanup;
2419  }
2420 
2421  //Populates extradata - output frames are flushed and param sets are available.
2422  status = VTCompressionSessionCompleteFrames(vtctx->session,
2423  kCMTimeIndefinite);
2424 
2425  if (status)
2426  goto pe_cleanup;
2427 
2428  status = vtenc_q_pop(vtctx, 0, &buf, NULL);
2429  if (status) {
2430  av_log(avctx, AV_LOG_ERROR, "popping: %d\n", status);
2431  goto pe_cleanup;
2432  }
2433 
2434  CFRelease(buf);
2435 
2436 
2437 
2438 pe_cleanup:
2439  if(vtctx->session)
2440  CFRelease(vtctx->session);
2441 
2442  vtctx->session = NULL;
2443  vtctx->frame_ct_out = 0;
2444 
2445  av_assert0(status != 0 || (avctx->extradata && avctx->extradata_size > 0));
2446 
2447  return status;
2448 }
2449 
2451 {
2452  VTEncContext *vtctx = avctx->priv_data;
2453 
2455  pthread_mutex_destroy(&vtctx->lock);
2456 
2457  if(!vtctx->session) return 0;
2458 
2459  VTCompressionSessionCompleteFrames(vtctx->session,
2460  kCMTimeIndefinite);
2461  clear_frame_queue(vtctx);
2462  CFRelease(vtctx->session);
2463  vtctx->session = NULL;
2464 
2465  if (vtctx->color_primaries) {
2466  CFRelease(vtctx->color_primaries);
2467  vtctx->color_primaries = NULL;
2468  }
2469 
2470  if (vtctx->transfer_function) {
2471  CFRelease(vtctx->transfer_function);
2472  vtctx->transfer_function = NULL;
2473  }
2474 
2475  if (vtctx->ycbcr_matrix) {
2476  CFRelease(vtctx->ycbcr_matrix);
2477  vtctx->ycbcr_matrix = NULL;
2478  }
2479 
2480  return 0;
2481 }
2482 
2483 static const enum AVPixelFormat avc_pix_fmts[] = {
2488 };
2489 
2490 static const enum AVPixelFormat hevc_pix_fmts[] = {
2496 };
2497 
2498 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
2499 #define COMMON_OPTIONS \
2500  { "allow_sw", "Allow software encoding", OFFSET(allow_sw), AV_OPT_TYPE_BOOL, \
2501  { .i64 = 0 }, 0, 1, VE }, \
2502  { "require_sw", "Require software encoding", OFFSET(require_sw), AV_OPT_TYPE_BOOL, \
2503  { .i64 = 0 }, 0, 1, VE }, \
2504  { "realtime", "Hint that encoding should happen in real-time if not faster (e.g. capturing from camera).", \
2505  OFFSET(realtime), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE }, \
2506  { "frames_before", "Other frames will come before the frames in this session. This helps smooth concatenation issues.", \
2507  OFFSET(frames_before), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE }, \
2508  { "frames_after", "Other frames will come after the frames in this session. This helps smooth concatenation issues.", \
2509  OFFSET(frames_after), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE },
2510 
2511 #define OFFSET(x) offsetof(VTEncContext, x)
2512 static const AVOption h264_options[] = {
2513  { "profile", "Profile", OFFSET(profile), AV_OPT_TYPE_INT, { .i64 = H264_PROF_AUTO }, H264_PROF_AUTO, H264_PROF_COUNT, VE, "profile" },
2514  { "baseline", "Baseline Profile", 0, AV_OPT_TYPE_CONST, { .i64 = H264_PROF_BASELINE }, INT_MIN, INT_MAX, VE, "profile" },
2515  { "main", "Main Profile", 0, AV_OPT_TYPE_CONST, { .i64 = H264_PROF_MAIN }, INT_MIN, INT_MAX, VE, "profile" },
2516  { "high", "High Profile", 0, AV_OPT_TYPE_CONST, { .i64 = H264_PROF_HIGH }, INT_MIN, INT_MAX, VE, "profile" },
2517 
2518  { "level", "Level", OFFSET(level), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 52, VE, "level" },
2519  { "1.3", "Level 1.3, only available with Baseline Profile", 0, AV_OPT_TYPE_CONST, { .i64 = 13 }, INT_MIN, INT_MAX, VE, "level" },
2520  { "3.0", "Level 3.0", 0, AV_OPT_TYPE_CONST, { .i64 = 30 }, INT_MIN, INT_MAX, VE, "level" },
2521  { "3.1", "Level 3.1", 0, AV_OPT_TYPE_CONST, { .i64 = 31 }, INT_MIN, INT_MAX, VE, "level" },
2522  { "3.2", "Level 3.2", 0, AV_OPT_TYPE_CONST, { .i64 = 32 }, INT_MIN, INT_MAX, VE, "level" },
2523  { "4.0", "Level 4.0", 0, AV_OPT_TYPE_CONST, { .i64 = 40 }, INT_MIN, INT_MAX, VE, "level" },
2524  { "4.1", "Level 4.1", 0, AV_OPT_TYPE_CONST, { .i64 = 41 }, INT_MIN, INT_MAX, VE, "level" },
2525  { "4.2", "Level 4.2", 0, AV_OPT_TYPE_CONST, { .i64 = 42 }, INT_MIN, INT_MAX, VE, "level" },
2526  { "5.0", "Level 5.0", 0, AV_OPT_TYPE_CONST, { .i64 = 50 }, INT_MIN, INT_MAX, VE, "level" },
2527  { "5.1", "Level 5.1", 0, AV_OPT_TYPE_CONST, { .i64 = 51 }, INT_MIN, INT_MAX, VE, "level" },
2528  { "5.2", "Level 5.2", 0, AV_OPT_TYPE_CONST, { .i64 = 52 }, INT_MIN, INT_MAX, VE, "level" },
2529 
2530  { "coder", "Entropy coding", OFFSET(entropy), AV_OPT_TYPE_INT, { .i64 = VT_ENTROPY_NOT_SET }, VT_ENTROPY_NOT_SET, VT_CABAC, VE, "coder" },
2531  { "cavlc", "CAVLC entropy coding", 0, AV_OPT_TYPE_CONST, { .i64 = VT_CAVLC }, INT_MIN, INT_MAX, VE, "coder" },
2532  { "vlc", "CAVLC entropy coding", 0, AV_OPT_TYPE_CONST, { .i64 = VT_CAVLC }, INT_MIN, INT_MAX, VE, "coder" },
2533  { "cabac", "CABAC entropy coding", 0, AV_OPT_TYPE_CONST, { .i64 = VT_CABAC }, INT_MIN, INT_MAX, VE, "coder" },
2534  { "ac", "CABAC entropy coding", 0, AV_OPT_TYPE_CONST, { .i64 = VT_CABAC }, INT_MIN, INT_MAX, VE, "coder" },
2535 
2536  { "a53cc", "Use A53 Closed Captions (if available)", OFFSET(a53_cc), AV_OPT_TYPE_BOOL, {.i64 = 1}, 0, 1, VE },
2537 
2539  { NULL },
2540 };
2541 
2543  .class_name = "h264_videotoolbox",
2544  .item_name = av_default_item_name,
2545  .option = h264_options,
2546  .version = LIBAVUTIL_VERSION_INT,
2547 };
2548 
2550  .name = "h264_videotoolbox",
2551  .long_name = NULL_IF_CONFIG_SMALL("VideoToolbox H.264 Encoder"),
2552  .type = AVMEDIA_TYPE_VIDEO,
2553  .id = AV_CODEC_ID_H264,
2554  .priv_data_size = sizeof(VTEncContext),
2556  .init = vtenc_init,
2557  .encode2 = vtenc_frame,
2558  .close = vtenc_close,
2559  .capabilities = AV_CODEC_CAP_DELAY,
2560  .priv_class = &h264_videotoolbox_class,
2561  .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE |
2563 };
2564 
2565 static const AVOption hevc_options[] = {
2566  { "profile", "Profile", OFFSET(profile), AV_OPT_TYPE_INT, { .i64 = HEVC_PROF_AUTO }, HEVC_PROF_AUTO, HEVC_PROF_COUNT, VE, "profile" },
2567  { "main", "Main Profile", 0, AV_OPT_TYPE_CONST, { .i64 = HEVC_PROF_MAIN }, INT_MIN, INT_MAX, VE, "profile" },
2568  { "main10", "Main10 Profile", 0, AV_OPT_TYPE_CONST, { .i64 = HEVC_PROF_MAIN10 }, INT_MIN, INT_MAX, VE, "profile" },
2569 
2571  { NULL },
2572 };
2573 
2575  .class_name = "hevc_videotoolbox",
2576  .item_name = av_default_item_name,
2577  .option = hevc_options,
2578  .version = LIBAVUTIL_VERSION_INT,
2579 };
2580 
2582  .name = "hevc_videotoolbox",
2583  .long_name = NULL_IF_CONFIG_SMALL("VideoToolbox H.265 Encoder"),
2584  .type = AVMEDIA_TYPE_VIDEO,
2585  .id = AV_CODEC_ID_HEVC,
2586  .priv_data_size = sizeof(VTEncContext),
2588  .init = vtenc_init,
2589  .encode2 = vtenc_frame,
2590  .close = vtenc_close,
2591  .capabilities = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_HARDWARE,
2592  .priv_class = &hevc_videotoolbox_class,
2593  .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE |
2595  .wrapper_name = "videotoolbox",
2596 };
#define FF_CODEC_CAP_INIT_CLEANUP
The codec allows calling the close function for deallocation even if the init function returned a fai...
Definition: internal.h:48
ITU-R BT2020 for 12-bit system.
Definition: pixfmt.h:483
also ITU-R BT1361 / IEC 61966-2-4 xvYCC709 / SMPTE RP177 Annex B
Definition: pixfmt.h:498
#define NULL
Definition: coverity.c:32
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
static void vtenc_q_push(VTEncContext *vtctx, CMSampleBufferRef buffer, ExtraSEI *sei)
#define AV_NUM_DATA_POINTERS
Definition: frame.h:296
static CMVideoCodecType get_cm_codec_type(enum AVCodecID id)
static av_always_inline int pthread_mutex_destroy(pthread_mutex_t *mutex)
Definition: os2threads.h:108
pthread_cond_t cv_sample_sent
This structure describes decoded (raw) audio or video data.
Definition: frame.h:295
#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
AVOption.
Definition: opt.h:246
BufNode * q_head
const char * fmt
Definition: avisynth_c.h:861
struct BufNode * next
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
static const AVClass hevc_videotoolbox_class
int64_t bit_rate
the average bitrate
Definition: avcodec.h:1615
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
hardware decoding through Videotoolbox
Definition: pixfmt.h:282
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
static int set_extradata(AVCodecContext *avctx, CMSampleBufferRef sample_buffer)
int max_b_frames
maximum number of B-frames between non-B-frames Note: The output will be delayed by max_b_frames+1 re...
Definition: avcodec.h:1825
also ITU-R BT601-6 625 / ITU-R BT1358 625 / ITU-R BT1700 625 PAL & SECAM / IEC 61966-2-4 xvYCC601 ...
Definition: pixfmt.h:502
static int copy_param_sets(AVCodecContext *avctx, CMVideoFormatDescriptionRef vid_fmt, uint8_t *dst, size_t dst_size)
#define AV_CODEC_CAP_HARDWARE
Codec is backed by a hardware implementation.
Definition: avcodec.h:1078
static int create_cv_pixel_buffer_info(AVCodecContext *avctx, CFMutableDictionaryRef *dict)
enum AVCodecID codec_id
Definition: qsv.c:72
enum AVColorRange color_range
MPEG vs JPEG YUV range.
Definition: avcodec.h:2200
int num
Numerator.
Definition: rational.h:59
int size
Definition: avcodec.h:1478
static int vtenc_configure_encoder(AVCodecContext *avctx)
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:191
static int write_sei(const ExtraSEI *sei, int sei_type, uint8_t *dst, size_t dst_size)
AVRational sample_aspect_ratio
sample aspect ratio (0 if unknown) That is the width of a pixel divided by the height of the pixel...
Definition: avcodec.h:1944
also ITU-R BT601-6 525 / ITU-R BT1358 525 / ITU-R BT1700 NTSC
Definition: pixfmt.h:503
enum AVMediaType codec_type
Definition: rtp.c:37
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:1775
CFStringRef kVTProfileLevel_H264_High_5_2
static AVPacket pkt
#define src
Definition: vp8dsp.c:254
AVCodec.
Definition: avcodec.h:3481
static av_always_inline int pthread_cond_destroy(pthread_cond_t *cond)
Definition: os2threads.h:140
AVColorTransferCharacteristic
Color Transfer Characteristic.
Definition: pixfmt.h:467
functionally identical to above
Definition: pixfmt.h:504
const char * av_color_space_name(enum AVColorSpace space)
Definition: pixdesc.c:2915
int64_t require_sw
CFStringRef kVTCompressionPropertyKey_H264EntropyMode
static int copy_replace_length_codes(AVCodecContext *avctx, size_t length_code_size, CMSampleBufferRef sample_buffer, ExtraSEI *sei, uint8_t *dst_data, size_t dst_size)
Copies NAL units and replaces length codes with H.264 Annex B start codes.
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented...
Definition: avcodec.h:1688
static int is_post_sei_nal_type(int nal_type)
AVFrameSideData * av_frame_get_side_data(const AVFrame *frame, enum AVFrameSideDataType type)
Definition: frame.c:734
static int16_t block[64]
Definition: dct.c:115
const char * class_name
The name of the class; usually it is the same name as the context structure type to which the AVClass...
Definition: log.h:72
#define AV_CODEC_CAP_DELAY
Encoder or decoder requires flushing with NULL input at the end in order to give the complete and cor...
Definition: avcodec.h:1006
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
static int vtenc_cm_to_avpacket(AVCodecContext *avctx, CMSampleBufferRef sample_buffer, AVPacket *pkt, ExtraSEI *sei)
int ff_alloc_packet2(AVCodecContext *avctx, AVPacket *avpkt, int64_t size, int64_t min_size)
Check AVPacket size and/or allocate data.
Definition: encode.c:32
AVCodec ff_hevc_videotoolbox_encoder
CFStringRef kCVImageBufferTransferFunction_ITU_R_2020
#define FF_CODEC_CAP_INIT_THREADSAFE
The codec does not modify any global variables in the init function, allowing to call the init functi...
Definition: internal.h:40
static char buffer[20]
Definition: seek.c:32
uint8_t
#define av_cold
Definition: attributes.h:82
#define av_malloc(s)
CFStringRef kVTProfileLevel_HEVC_Main_AutoLevel
AVOptions.
static const uint32_t color[16+AV_CLASS_CATEGORY_NB]
Definition: log.c:92
static const AVOption hevc_options[]
const char * av_color_range_name(enum AVColorRange range)
Definition: pixdesc.c:2848
also ITU-R BT470M / ITU-R BT1700 625 PAL & SECAM
Definition: pixfmt.h:472
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
Definition: frame.h:388
CFStringRef kVTProfileLevel_H264_Baseline_5_2
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
Definition: avcodec.h:1666
static AVFrame * frame
static int get_cv_pixel_info(AVCodecContext *avctx, const AVFrame *frame, int *color, int *plane_count, size_t *widths, size_t *heights, size_t *strides, size_t *contiguous_buf_size)
Structure to hold side data for an AVFrame.
Definition: frame.h:201
uint8_t * data
Definition: avcodec.h:1477
int64_t frame_ct_in
Not part of ABI.
Definition: pixfmt.h:523
static av_always_inline int pthread_cond_signal(pthread_cond_t *cond)
Definition: os2threads.h:148
static int get_length_code_size(AVCodecContext *avctx, CMSampleBufferRef sample_buffer, size_t *size)
CFStringRef kVTProfileLevel_H264_High_4_0
AVColorRange
MPEG vs JPEG YUV range.
Definition: pixfmt.h:519
int av_reduce(int *dst_num, int *dst_den, int64_t num, int64_t den, int64_t max)
Reduce a fraction.
Definition: rational.c:35
AVColorPrimaries
Chromaticity coordinates of the source primaries.
Definition: pixfmt.h:443
static av_cold int vtenc_frame(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *frame, int *got_packet)
#define av_log(a,...)
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
Definition: avcodec.h:1509
CFStringRef kVTProfileLevel_HEVC_Main10_AutoLevel
H.264 common definitions.
#define GET_SYM(symbol, defaultVal)
CFStringRef kVTProfileLevel_H264_Baseline_5_1
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:259
AVCodecID
Identify the syntax and semantics of the bitstream.
Definition: avcodec.h:215
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
int has_b_frames
Size of the frame reordering buffer in the decoder.
Definition: avcodec.h:1855
CFStringRef kVTVideoEncoderSpecification_EnableHardwareAcceleratedVideoEncoder
static void vtenc_get_frame_info(CMSampleBufferRef buffer, bool *is_key_frame)
CFStringRef kVTProfileLevel_H264_Baseline_5_0
CFStringRef kVTProfileLevel_H264_Main_4_2
#define AVERROR(e)
Definition: error.h:43
static int find_sei_end(AVCodecContext *avctx, uint8_t *nal_data, size_t nal_size, uint8_t **sei_end)
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:186
BufNode * q_tail
enum AVColorRange color_range
MPEG vs JPEG YUV range.
Definition: frame.h:539
ATSC A53 Part 4 Closed Captions.
Definition: frame.h:58
static void add_color_attr(AVCodecContext *avctx, CFMutableDictionaryRef dict)
CFStringRef kVTProfileLevel_H264_High_4_1
static int get_params_size(AVCodecContext *avctx, CMVideoFormatDescriptionRef vid_fmt, size_t *size)
Get the parameter sets from a CMSampleBufferRef.
int flags
AV_CODEC_FLAG_*.
Definition: avcodec.h:1645
planar YUV 4:2:0, 12bpp, 1 plane for Y and 1 plane for the UV components, which are interleaved (firs...
Definition: pixfmt.h:89
also ITU-R BT1361 / IEC 61966-2-4 / SMPTE RP177 Annex B
Definition: pixfmt.h:445
ExtraSEI * sei
simple assert() macros that are a bit more flexible than ISO C assert().
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
const char * name
Name of the codec implementation.
Definition: avcodec.h:3488
CFStringRef kVTProfileLevel_H264_High_3_0
VTH264Entropy
VT_HEVCProfile
CFStringRef kVTProfileLevel_H264_Baseline_4_0
static const uint8_t offset[127][2]
Definition: vf_spp.c:92
static int get_frame(AVFilterContext *ctx, int is_second)
Definition: vf_nnedi.c:689
static bool get_vt_h264_profile_level(AVCodecContext *avctx, CFStringRef *profile_level_val)
int flags
A combination of AV_PKT_FLAG values.
Definition: avcodec.h:1483
const char * av_color_primaries_name(enum AVColorPrimaries primaries)
Definition: pixdesc.c:2867
int64_t frames_before
static int vtenc_create_encoder(AVCodecContext *avctx, CMVideoCodecType codec_type, CFStringRef profile_level, CFNumberRef gamma_level, CFDictionaryRef enc_info, CFDictionaryRef pixel_buffer_info, VTCompressionSessionRef *session)
VTCompressionSessionRef session
CFStringRef color_primaries
CFStringRef kVTProfileLevel_H264_High_4_2
static int get_cv_transfer_function(AVCodecContext *avctx, CFStringRef *transfer_fnc, CFNumberRef *gamma_level)
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:378
#define AVERROR_BUFFER_TOO_SMALL
Buffer too small.
Definition: error.h:51
CMSampleBufferRef cm_buffer
int width
picture width / height.
Definition: avcodec.h:1738
static void loadVTEncSymbols()
ITU-R BT2020 non-constant luminance system.
Definition: pixfmt.h:507
getParameterSetAtIndex CMVideoFormatDescriptionGetHEVCParameterSetAtIndex
AVFormatContext * ctx
Definition: movenc.c:48
enum AVColorPrimaries color_primaries
Chromaticity coordinates of the source primaries.
Definition: avcodec.h:2179
#define OFFSET(x)
static av_always_inline int pthread_mutex_init(pthread_mutex_t *mutex, const pthread_mutexattr_t *attr)
Definition: os2threads.h:100
CFStringRef kVTH264EntropyMode_CAVLC
CFStringRef kCVImageBufferYCbCrMatrix_ITU_R_2020
#define pthread_mutex_unlock(a)
Definition: ffprobe.c:65
like NV12, with 10bpp per component, data in the high bits, zeros in the low bits, little-endian
Definition: pixfmt.h:284
static int copy_avframe_to_pixel_buffer(AVCodecContext *avctx, const AVFrame *frame, CVPixelBufferRef cv_img, const size_t *plane_strides, const size_t *plane_rows)
the normal 2^n-1 "JPEG" YUV ranges
Definition: pixfmt.h:522
enum AVCodecID codec_id
CFStringRef kVTProfileLevel_H264_Baseline_AutoLevel
static int vtenc_q_pop(VTEncContext *vtctx, bool wait, CMSampleBufferRef *buf, ExtraSEI **sei)
int format
format of the frame, -1 if unknown or unset Values correspond to enum AVPixelFormat for video frames...
Definition: frame.h:368
CFStringRef kVTCompressionPropertyKey_RealTime
also ITU-R BT1361
Definition: pixfmt.h:469
static int vtenc_populate_extradata(AVCodecContext *avctx, CMVideoCodecType codec_type, CFStringRef profile_level, CFNumberRef gamma_level, CFDictionaryRef enc_info, CFDictionaryRef pixel_buffer_info)
CFStringRef kCVImageBufferColorPrimaries_ITU_R_2020
static const AVClass h264_videotoolbox_class
Libavcodec external API header.
static int get_cv_pixel_format(AVCodecContext *avctx, enum AVPixelFormat fmt, enum AVColorRange range, int *av_pixel_format, int *range_guessed)
static enum AVPixelFormat hevc_pix_fmts[]
enum AVCodecID codec_id
Definition: avcodec.h:1575
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:326
CFStringRef kVTProfileLevel_H264_High_3_1
main external API structure.
Definition: avcodec.h:1565
void av_packet_unref(AVPacket *pkt)
Wipe the packet.
Definition: avpacket.c:599
static int create_encoder_dict_h264(const AVFrame *frame, CFDictionaryRef *dict_out)
void * buf
Definition: avisynth_c.h:766
static av_cold int vtenc_close(AVCodecContext *avctx)
int extradata_size
Definition: avcodec.h:1667
Describe the class of an AVClass context structure.
Definition: log.h:67
CFStringRef transfer_function
static void clear_frame_queue(VTEncContext *vtctx)
static int get_cv_ycbcr_matrix(AVCodecContext *avctx, CFStringRef *matrix)
enum AVColorSpace colorspace
YUV colorspace type.
Definition: avcodec.h:2193
Rational number (pair of numerator and denominator).
Definition: rational.h:58
enum AVColorTransferCharacteristic color_trc
Color Transfer Characteristic.
Definition: avcodec.h:2186
AVCodec ff_h264_videotoolbox_encoder
static int copy_emulation_prev(const uint8_t *src, size_t src_size, uint8_t *dst, ssize_t dst_offset, size_t dst_size)
Copies the data inserting emulation prevention bytes as needed.
static int vtenc_send_frame(AVCodecContext *avctx, VTEncContext *vtctx, const AVFrame *frame)
cl_device_type type
VT_H264Profile
static pthread_once_t once_ctrl
registered user data as specified by Rec. ITU-T T.35
Definition: h264_sei.h:32
int64_t frames_after
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:275
CFStringRef kVTProfileLevel_H264_Main_AutoLevel
mfxU16 profile
Definition: qsvenc.c:44
CFStringRef kVTVideoEncoderSpecification_RequireHardwareAcceleratedVideoEncoder
static int get_sei_msg_bytes(const ExtraSEI *sei, int type)
Returns a sufficient number of bytes to contain the sei data.
#define COMMON_OPTIONS
static int64_t pts
#define flags(name, subs,...)
Definition: cbs_av1.c:561
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:309
uint8_t level
Definition: svq3.c:207
#define AV_CODEC_FLAG_GLOBAL_HEADER
Place global headers in extradata instead of every keyframe.
Definition: avcodec.h:904
the normal 219*2^(n-8) "MPEG" YUV ranges
Definition: pixfmt.h:521
int gop_size
the number of pictures in a group of pictures, or 0 for intra_only
Definition: avcodec.h:1760
static int create_cv_pixel_buffer(AVCodecContext *avctx, const AVFrame *frame, CVPixelBufferRef *cv_img)
getParameterSetAtIndex get_param_set_func
CFStringRef kVTH264EntropyMode_CABAC
int
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:66
common internal api header.
_fmutex pthread_mutex_t
Definition: os2threads.h:49
CFStringRef kVTProfileLevel_H264_High_AutoLevel
const char * av_color_transfer_name(enum AVColorTransferCharacteristic transfer)
Definition: pixdesc.c:2891
OSStatus(* getParameterSetAtIndex)(CMFormatDescriptionRef videoDesc, size_t parameterSetIndex, const uint8_t **parameterSetPointerOut, size_t *parameterSetSizeOut, size_t *parameterSetCountOut, int *NALUnitHeaderLengthOut)
CFStringRef ycbcr_matrix
static void vtenc_output_callback(void *ctx, void *sourceFrameCtx, OSStatus status, VTEncodeInfoFlags flags, CMSampleBufferRef sample_buffer)
also ITU-R BT470BG
Definition: pixfmt.h:473
static void vt_release_num(CFNumberRef *refPtr)
NULL-safe release of *refPtr, and sets value to NULL.
CFStringRef kVTProfileLevel_H264_High_3_2
static av_always_inline int pthread_cond_init(pthread_cond_t *cond, const pthread_condattr_t *attr)
Definition: os2threads.h:129
pthread_mutex_t lock
static int FUNC() sei(CodedBitstreamContext *ctx, RWContext *rw, H264RawSEI *current)
int den
Denominator.
Definition: rational.h:60
static bool get_vt_hevc_profile_level(AVCodecContext *avctx, CFStringRef *profile_level_val)
#define AV_INPUT_BUFFER_PADDING_SIZE
Required number of additionally allocated bytes at the end of the input bitstream for decoding...
Definition: avcodec.h:790
void * priv_data
Definition: avcodec.h:1592
#define PTHREAD_ONCE_INIT
Definition: os2threads.h:67
#define av_free(p)
int len
CFStringRef kVTProfileLevel_H264_High_5_1
static const AVOption h264_options[]
static struct @176 compat_keys
#define VE
int64_t frame_ct_out
CFStringRef kVTProfileLevel_H264_Baseline_4_2
ITU-R BT2020 for 10-bit system.
Definition: pixfmt.h:482
int64_t dts
Decompression timestamp in AVStream->time_base units; the time at which the packet is decompressed...
Definition: avcodec.h:1476
int ff_alloc_a53_sei(const AVFrame *frame, size_t prefix_len, void **data, size_t *sei_size)
Check AVFrame for A53 side data and allocate and fill SEI message with A53 info.
Definition: utils.c:2172
ITU-R BT2020.
Definition: pixfmt.h:454
static int count_nalus(size_t length_code_size, CMSampleBufferRef sample_buffer, int *count)
void INT64 INT64 count
Definition: avisynth_c.h:766
static const uint8_t start_code[]
static av_cold int vtenc_init(AVCodecContext *avctx)
const char * av_get_pix_fmt_name(enum AVPixelFormat pix_fmt)
Return the short name for a pixel format, NULL in case pix_fmt is unknown.
Definition: pixdesc.c:2438
static int get_cv_color_primaries(AVCodecContext *avctx, CFStringRef *primaries)
#define AVERROR_EXTERNAL
Generic error in an external library.
Definition: error.h:57
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
This structure stores compressed data.
Definition: avcodec.h:1454
static av_always_inline int pthread_once(pthread_once_t *once_control, void(*init_routine)(void))
Definition: os2threads.h:184
static void set_async_error(VTEncContext *vtctx, int err)
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
Definition: avcodec.h:1470
CFStringRef kVTProfileLevel_H264_Main_5_1
CFStringRef kVTProfileLevel_H264_Main_5_2
int64_t rc_max_rate
maximum bitrate
Definition: avcodec.h:2443
static enum AVPixelFormat avc_pix_fmts[]