libavcodec/videotoolboxenc.c

   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/mem.h"
  28 #include "libavutil/opt.h"
  29 #include "libavutil/avassert.h"
  30 #include "libavutil/avstring.h"
  31 #include "libavcodec/avcodec.h"
  32 #include "libavutil/pixdesc.h"
  33 #include "libavutil/hwcontext_videotoolbox.h"
  34 #include "codec_internal.h"
  35 #include "internal.h"
  36 #include <pthread.h>
  37 #include "atsc_a53.h"
  38 #include "encode.h"
  39 #include "h264.h"
  40 #include "h264_sei.h"
  41 #include "hwconfig.h"
  42 #include <dlfcn.h>
  43
  44 #if !HAVE_KCMVIDEOCODECTYPE_HEVC
  45 enum { kCMVideoCodecType_HEVC = 'hvc1' };
  46 #endif
  47
  48 #if !HAVE_KCMVIDEOCODECTYPE_HEVCWITHALPHA
  49 enum { kCMVideoCodecType_HEVCWithAlpha = 'muxa' };
  50 #endif
  51
  52 #if !HAVE_KCVPIXELFORMATTYPE_420YPCBCR10BIPLANARVIDEORANGE
  53 enum { kCVPixelFormatType_420YpCbCr10BiPlanarFullRange = 'xf20' };
  54 enum { kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange = 'x420' };
  55 #endif
  56
  57 #ifndef TARGET_CPU_ARM64
  58 #   define TARGET_CPU_ARM64 0
  59 #endif
  60
  61 typedef OSStatus (*getParameterSetAtIndex)(CMFormatDescriptionRef videoDesc,
  62                                            size_t parameterSetIndex,
  63                                            const uint8_t **parameterSetPointerOut,
  64                                            size_t *parameterSetSizeOut,
  65                                            size_t *parameterSetCountOut,
  66                                            int *NALUnitHeaderLengthOut);
  67
  68 /*
  69  * Symbols that aren't available in MacOS 10.8 and iOS 8.0 need to be accessed
  70  * from compat_keys, or it will cause compiler errors when compiling for older
  71  * OS versions.
  72  *
  73  * For example, kVTCompressionPropertyKey_H264EntropyMode was added in
  74  * MacOS 10.9. If this constant were used directly, a compiler would generate
  75  * an error when it has access to the MacOS 10.8 headers, but does not have
  76  * 10.9 headers.
  77  *
  78  * Runtime errors will still occur when unknown keys are set. A warning is
  79  * logged and encoding continues where possible.
  80  *
  81  * When adding new symbols, they should be loaded/set in loadVTEncSymbols().
  82  */
  83 static struct{
  84     CFStringRef kCVImageBufferColorPrimaries_ITU_R_2020;
  85     CFStringRef kCVImageBufferTransferFunction_ITU_R_2020;
  86     CFStringRef kCVImageBufferYCbCrMatrix_ITU_R_2020;
  87
  88     CFStringRef kVTCompressionPropertyKey_H264EntropyMode;
  89     CFStringRef kVTH264EntropyMode_CAVLC;
  90     CFStringRef kVTH264EntropyMode_CABAC;
  91
  92     CFStringRef kVTProfileLevel_H264_Baseline_4_0;
  93     CFStringRef kVTProfileLevel_H264_Baseline_4_2;
  94     CFStringRef kVTProfileLevel_H264_Baseline_5_0;
  95     CFStringRef kVTProfileLevel_H264_Baseline_5_1;
  96     CFStringRef kVTProfileLevel_H264_Baseline_5_2;
  97     CFStringRef kVTProfileLevel_H264_Baseline_AutoLevel;
  98     CFStringRef kVTProfileLevel_H264_Main_4_2;
  99     CFStringRef kVTProfileLevel_H264_Main_5_1;
 100     CFStringRef kVTProfileLevel_H264_Main_5_2;
 101     CFStringRef kVTProfileLevel_H264_Main_AutoLevel;
 102     CFStringRef kVTProfileLevel_H264_High_3_0;
 103     CFStringRef kVTProfileLevel_H264_High_3_1;
 104     CFStringRef kVTProfileLevel_H264_High_3_2;
 105     CFStringRef kVTProfileLevel_H264_High_4_0;
 106     CFStringRef kVTProfileLevel_H264_High_4_1;
 107     CFStringRef kVTProfileLevel_H264_High_4_2;
 108     CFStringRef kVTProfileLevel_H264_High_5_1;
 109     CFStringRef kVTProfileLevel_H264_High_5_2;
 110     CFStringRef kVTProfileLevel_H264_High_AutoLevel;
 111     CFStringRef kVTProfileLevel_H264_Extended_5_0;
 112     CFStringRef kVTProfileLevel_H264_Extended_AutoLevel;
 113     CFStringRef kVTProfileLevel_H264_ConstrainedBaseline_AutoLevel;
 114     CFStringRef kVTProfileLevel_H264_ConstrainedHigh_AutoLevel;
 115
 116     CFStringRef kVTProfileLevel_HEVC_Main_AutoLevel;
 117     CFStringRef kVTProfileLevel_HEVC_Main10_AutoLevel;
 118
 119     CFStringRef kVTCompressionPropertyKey_RealTime;
 120     CFStringRef kVTCompressionPropertyKey_TargetQualityForAlpha;
 121     CFStringRef kVTCompressionPropertyKey_PrioritizeEncodingSpeedOverQuality;
 122     CFStringRef kVTCompressionPropertyKey_ConstantBitRate;
 123     CFStringRef kVTCompressionPropertyKey_EncoderID;
 124
 125     CFStringRef kVTVideoEncoderSpecification_EnableHardwareAcceleratedVideoEncoder;
 126     CFStringRef kVTVideoEncoderSpecification_RequireHardwareAcceleratedVideoEncoder;
 127     CFStringRef kVTVideoEncoderSpecification_EnableLowLatencyRateControl;
 128     CFStringRef kVTCompressionPropertyKey_AllowOpenGOP;
 129     CFStringRef kVTCompressionPropertyKey_MaximizePowerEfficiency;
 130     CFStringRef kVTCompressionPropertyKey_ReferenceBufferCount;
 131     CFStringRef kVTCompressionPropertyKey_MaxAllowedFrameQP;
 132     CFStringRef kVTCompressionPropertyKey_MinAllowedFrameQP;
 133
 134     getParameterSetAtIndex CMVideoFormatDescriptionGetHEVCParameterSetAtIndex;
 135 } compat_keys;
 136
 137 #define GET_SYM(symbol, defaultVal)                                     \
 138 do{                                                                     \
 139     CFStringRef* handle = (CFStringRef*)dlsym(RTLD_DEFAULT, #symbol);   \
 140     if(!handle)                                                         \
 141         compat_keys.symbol = CFSTR(defaultVal);                         \
 142     else                                                                \
 143         compat_keys.symbol = *handle;                                   \
 144 }while(0)
 145
 146 static pthread_once_t once_ctrl = PTHREAD_ONCE_INIT;
 147
 148 static void loadVTEncSymbols(void){
 149     compat_keys.CMVideoFormatDescriptionGetHEVCParameterSetAtIndex =
 150         (getParameterSetAtIndex)dlsym(
 151             RTLD_DEFAULT,
 152             "CMVideoFormatDescriptionGetHEVCParameterSetAtIndex"
 153         );
 154
 155     GET_SYM(kCVImageBufferColorPrimaries_ITU_R_2020,   "ITU_R_2020");
 156     GET_SYM(kCVImageBufferTransferFunction_ITU_R_2020, "ITU_R_2020");
 157     GET_SYM(kCVImageBufferYCbCrMatrix_ITU_R_2020,      "ITU_R_2020");
 158
 159     GET_SYM(kVTCompressionPropertyKey_H264EntropyMode, "H264EntropyMode");
 160     GET_SYM(kVTH264EntropyMode_CAVLC, "CAVLC");
 161     GET_SYM(kVTH264EntropyMode_CABAC, "CABAC");
 162
 163     GET_SYM(kVTProfileLevel_H264_Baseline_4_0,       "H264_Baseline_4_0");
 164     GET_SYM(kVTProfileLevel_H264_Baseline_4_2,       "H264_Baseline_4_2");
 165     GET_SYM(kVTProfileLevel_H264_Baseline_5_0,       "H264_Baseline_5_0");
 166     GET_SYM(kVTProfileLevel_H264_Baseline_5_1,       "H264_Baseline_5_1");
 167     GET_SYM(kVTProfileLevel_H264_Baseline_5_2,       "H264_Baseline_5_2");
 168     GET_SYM(kVTProfileLevel_H264_Baseline_AutoLevel, "H264_Baseline_AutoLevel");
 169     GET_SYM(kVTProfileLevel_H264_Main_4_2,           "H264_Main_4_2");
 170     GET_SYM(kVTProfileLevel_H264_Main_5_1,           "H264_Main_5_1");
 171     GET_SYM(kVTProfileLevel_H264_Main_5_2,           "H264_Main_5_2");
 172     GET_SYM(kVTProfileLevel_H264_Main_AutoLevel,     "H264_Main_AutoLevel");
 173     GET_SYM(kVTProfileLevel_H264_High_3_0,           "H264_High_3_0");
 174     GET_SYM(kVTProfileLevel_H264_High_3_1,           "H264_High_3_1");
 175     GET_SYM(kVTProfileLevel_H264_High_3_2,           "H264_High_3_2");
 176     GET_SYM(kVTProfileLevel_H264_High_4_0,           "H264_High_4_0");
 177     GET_SYM(kVTProfileLevel_H264_High_4_1,           "H264_High_4_1");
 178     GET_SYM(kVTProfileLevel_H264_High_4_2,           "H264_High_4_2");
 179     GET_SYM(kVTProfileLevel_H264_High_5_1,           "H264_High_5_1");
 180     GET_SYM(kVTProfileLevel_H264_High_5_2,           "H264_High_5_2");
 181     GET_SYM(kVTProfileLevel_H264_High_AutoLevel,     "H264_High_AutoLevel");
 182     GET_SYM(kVTProfileLevel_H264_Extended_5_0,       "H264_Extended_5_0");
 183     GET_SYM(kVTProfileLevel_H264_Extended_AutoLevel, "H264_Extended_AutoLevel");
 184     GET_SYM(kVTProfileLevel_H264_ConstrainedBaseline_AutoLevel, "H264_ConstrainedBaseline_AutoLevel");
 185     GET_SYM(kVTProfileLevel_H264_ConstrainedHigh_AutoLevel,     "H264_ConstrainedHigh_AutoLevel");
 186
 187     GET_SYM(kVTProfileLevel_HEVC_Main_AutoLevel,     "HEVC_Main_AutoLevel");
 188     GET_SYM(kVTProfileLevel_HEVC_Main10_AutoLevel,   "HEVC_Main10_AutoLevel");
 189
 190     GET_SYM(kVTCompressionPropertyKey_RealTime, "RealTime");
 191     GET_SYM(kVTCompressionPropertyKey_TargetQualityForAlpha,
 192             "TargetQualityForAlpha");
 193     GET_SYM(kVTCompressionPropertyKey_PrioritizeEncodingSpeedOverQuality,
 194             "PrioritizeEncodingSpeedOverQuality");
 195     GET_SYM(kVTCompressionPropertyKey_ConstantBitRate, "ConstantBitRate");
 196     GET_SYM(kVTCompressionPropertyKey_EncoderID, "EncoderID");
 197
 198     GET_SYM(kVTVideoEncoderSpecification_EnableHardwareAcceleratedVideoEncoder,
 199             "EnableHardwareAcceleratedVideoEncoder");
 200     GET_SYM(kVTVideoEncoderSpecification_RequireHardwareAcceleratedVideoEncoder,
 201             "RequireHardwareAcceleratedVideoEncoder");
 202     GET_SYM(kVTVideoEncoderSpecification_EnableLowLatencyRateControl,
 203                 "EnableLowLatencyRateControl");
 204     GET_SYM(kVTCompressionPropertyKey_AllowOpenGOP, "AllowOpenGOP");
 205     GET_SYM(kVTCompressionPropertyKey_MaximizePowerEfficiency,
 206             "MaximizePowerEfficiency");
 207     GET_SYM(kVTCompressionPropertyKey_ReferenceBufferCount,
 208             "ReferenceBufferCount");
 209     GET_SYM(kVTCompressionPropertyKey_MaxAllowedFrameQP, "MaxAllowedFrameQP");
 210     GET_SYM(kVTCompressionPropertyKey_MinAllowedFrameQP, "MinAllowedFrameQP");
 211 }
 212
 213 #define H264_PROFILE_CONSTRAINED_HIGH (AV_PROFILE_H264_HIGH | AV_PROFILE_H264_CONSTRAINED)
 214
 215 typedef enum VTH264Entropy{
 216     VT_ENTROPY_NOT_SET,
 217     VT_CAVLC,
 218     VT_CABAC
 219 } VTH264Entropy;
 220
 221 static const uint8_t start_code[] = { 0, 0, 0, 1 };
 222
 223 typedef struct ExtraSEI {
 224   void *data;
 225   size_t size;
 226 } ExtraSEI;
 227
 228 typedef struct BufNode {
 229     CMSampleBufferRef cm_buffer;
 230     ExtraSEI sei;
 231     AVBufferRef *frame_buf;
 232     struct BufNode* next;
 233 } BufNode;
 234
 235 typedef struct VTEncContext {
 236     AVClass *class;
 237     enum AVCodecID codec_id;
 238     VTCompressionSessionRef session;
 239     CFDictionaryRef supported_props;
 240     CFStringRef ycbcr_matrix;
 241     CFStringRef color_primaries;
 242     CFStringRef transfer_function;
 243     getParameterSetAtIndex get_param_set_func;
 244
 245     pthread_mutex_t lock;
 246     pthread_cond_t  cv_sample_sent;
 247
 248     int async_error;
 249
 250     BufNode *q_head;
 251     BufNode *q_tail;
 252
 253     int64_t frame_ct_out;
 254     int64_t frame_ct_in;
 255
 256     int64_t first_pts;
 257     int64_t dts_delta;
 258
 259     int profile;
 260     int level;
 261     int entropy;
 262     int realtime;
 263     int frames_before;
 264     int frames_after;
 265     int constant_bit_rate;
 266
 267     int allow_sw;
 268     int require_sw;
 269     double alpha_quality;
 270     int prio_speed;
 271
 272     bool flushing;
 273     int has_b_frames;
 274     bool warned_color_range;
 275
 276     /* can't be bool type since AVOption will access it as int */
 277     int a53_cc;
 278
 279     int max_slice_bytes;
 280     int power_efficient;
 281     int max_ref_frames;
 282 } VTEncContext;
 283
 284 static void vtenc_free_buf_node(BufNode *info)
 285 {
 286     if (!info)
 287         return;
 288
 289     av_free(info->sei.data);
 290     if (info->cm_buffer)
 291         CFRelease(info->cm_buffer);
 292     av_buffer_unref(&info->frame_buf);
 293     av_free(info);
 294 }
 295
 296 static int vt_dump_encoder(AVCodecContext *avctx)
 297 {
 298     VTEncContext *vtctx = avctx->priv_data;
 299     CFStringRef encoder_id = NULL;
 300     int status;
 301     CFIndex length, max_size;
 302     char *name;
 303
 304     status = VTSessionCopyProperty(vtctx->session,
 305                                    compat_keys.kVTCompressionPropertyKey_EncoderID,
 306                                    kCFAllocatorDefault,
 307                                    &encoder_id);
 308     // OK if not supported
 309     if (status != noErr)
 310         return 0;
 311
 312     length = CFStringGetLength(encoder_id);
 313     max_size = CFStringGetMaximumSizeForEncoding(length, kCFStringEncodingUTF8);
 314     name = av_malloc(max_size);
 315     if (!name) {
 316         CFRelease(encoder_id);
 317         return AVERROR(ENOMEM);
 318     }
 319
 320     CFStringGetCString(encoder_id,
 321                        name,
 322                        max_size,
 323                        kCFStringEncodingUTF8);
 324     av_log(avctx, AV_LOG_DEBUG, "Init the encoder: %s\n", name);
 325     av_freep(&name);
 326     CFRelease(encoder_id);
 327
 328     return 0;
 329 }
 330
 331 static int vtenc_populate_extradata(AVCodecContext   *avctx,
 332                                     CMVideoCodecType codec_type,
 333                                     CFStringRef      profile_level,
 334                                     CFNumberRef      gamma_level,
 335                                     CFDictionaryRef  enc_info,
 336                                     CFDictionaryRef  pixel_buffer_info);
 337
 338 /**
 339  * NULL-safe release of *refPtr, and sets value to NULL.
 340  */
 341 static void vt_release_num(CFNumberRef* refPtr){
 342     if (!*refPtr) {
 343         return;
 344     }
 345
 346     CFRelease(*refPtr);
 347     *refPtr = NULL;
 348 }
 349
 350 static void set_async_error(VTEncContext *vtctx, int err)
 351 {
 352     BufNode *info;
 353
 354     pthread_mutex_lock(&vtctx->lock);
 355
 356     vtctx->async_error = err;
 357
 358     info = vtctx->q_head;
 359     vtctx->q_head = vtctx->q_tail = NULL;
 360
 361     while (info) {
 362         BufNode *next = info->next;
 363         vtenc_free_buf_node(info);
 364         info = next;
 365     }
 366
 367     pthread_mutex_unlock(&vtctx->lock);
 368 }
 369
 370 static void clear_frame_queue(VTEncContext *vtctx)
 371 {
 372     set_async_error(vtctx, 0);
 373 }
 374
 375 static void vtenc_reset(VTEncContext *vtctx)
 376 {
 377     if (vtctx->session) {
 378         CFRelease(vtctx->session);
 379         vtctx->session = NULL;
 380     }
 381
 382     if (vtctx->supported_props) {
 383         CFRelease(vtctx->supported_props);
 384         vtctx->supported_props = NULL;
 385     }
 386
 387     if (vtctx->color_primaries) {
 388         CFRelease(vtctx->color_primaries);
 389         vtctx->color_primaries = NULL;
 390     }
 391
 392     if (vtctx->transfer_function) {
 393         CFRelease(vtctx->transfer_function);
 394         vtctx->transfer_function = NULL;
 395     }
 396
 397     if (vtctx->ycbcr_matrix) {
 398         CFRelease(vtctx->ycbcr_matrix);
 399         vtctx->ycbcr_matrix = NULL;
 400     }
 401 }
 402
 403 static int vtenc_q_pop(VTEncContext *vtctx, bool wait, CMSampleBufferRef *buf, ExtraSEI *sei)
 404 {
 405     BufNode *info;
 406
 407     pthread_mutex_lock(&vtctx->lock);
 408
 409     if (vtctx->async_error) {
 410         pthread_mutex_unlock(&vtctx->lock);
 411         return vtctx->async_error;
 412     }
 413
 414     if (vtctx->flushing && vtctx->frame_ct_in == vtctx->frame_ct_out) {
 415         *buf = NULL;
 416
 417         pthread_mutex_unlock(&vtctx->lock);
 418         return 0;
 419     }
 420
 421     while (!vtctx->q_head && !vtctx->async_error && wait && !vtctx->flushing) {
 422         pthread_cond_wait(&vtctx->cv_sample_sent, &vtctx->lock);
 423     }
 424
 425     if (!vtctx->q_head) {
 426         pthread_mutex_unlock(&vtctx->lock);
 427         *buf = NULL;
 428         return 0;
 429     }
 430
 431     info = vtctx->q_head;
 432     vtctx->q_head = vtctx->q_head->next;
 433     if (!vtctx->q_head) {
 434         vtctx->q_tail = NULL;
 435     }
 436
 437     vtctx->frame_ct_out++;
 438     pthread_mutex_unlock(&vtctx->lock);
 439
 440     *buf = info->cm_buffer;
 441     info->cm_buffer = NULL;
 442     if (sei && *buf) {
 443         *sei = info->sei;
 444         info->sei = (ExtraSEI) {0};
 445     }
 446     vtenc_free_buf_node(info);
 447
 448     return 0;
 449 }
 450
 451 static void vtenc_q_push(VTEncContext *vtctx, BufNode *info)
 452 {
 453     pthread_mutex_lock(&vtctx->lock);
 454
 455     if (!vtctx->q_head) {
 456         vtctx->q_head = info;
 457     } else {
 458         vtctx->q_tail->next = info;
 459     }
 460
 461     vtctx->q_tail = info;
 462
 463     pthread_cond_signal(&vtctx->cv_sample_sent);
 464     pthread_mutex_unlock(&vtctx->lock);
 465 }
 466
 467 static int count_nalus(size_t length_code_size,
 468                        CMSampleBufferRef sample_buffer,
 469                        int *count)
 470 {
 471     size_t offset = 0;
 472     int status;
 473     int nalu_ct = 0;
 474     uint8_t size_buf[4];
 475     size_t src_size = CMSampleBufferGetTotalSampleSize(sample_buffer);
 476     CMBlockBufferRef block = CMSampleBufferGetDataBuffer(sample_buffer);
 477
 478     if (length_code_size > 4)
 479         return AVERROR_INVALIDDATA;
 480
 481     while (offset < src_size) {
 482         size_t curr_src_len;
 483         size_t box_len = 0;
 484         size_t i;
 485
 486         status = CMBlockBufferCopyDataBytes(block,
 487                                             offset,
 488                                             length_code_size,
 489                                             size_buf);
 490
 491         if (status != kCMBlockBufferNoErr) {
 492             return AVERROR_EXTERNAL;
 493         }
 494
 495         for (i = 0; i < length_code_size; i++) {
 496             box_len <<= 8;
 497             box_len |= size_buf[i];
 498         }
 499
 500         curr_src_len = box_len + length_code_size;
 501         offset += curr_src_len;
 502
 503         nalu_ct++;
 504     }
 505
 506     *count = nalu_ct;
 507     return 0;
 508 }
 509
 510 static CMVideoCodecType get_cm_codec_type(AVCodecContext *avctx,
 511                                           int profile,
 512                                           double alpha_quality)
 513 {
 514     const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt == AV_PIX_FMT_VIDEOTOOLBOX ? avctx->sw_pix_fmt : avctx->pix_fmt);
 515     switch (avctx->codec_id) {
 516     case AV_CODEC_ID_H264: return kCMVideoCodecType_H264;
 517     case AV_CODEC_ID_HEVC:
 518         if (desc && (desc->flags & AV_PIX_FMT_FLAG_ALPHA) && alpha_quality > 0.0) {
 519             return kCMVideoCodecType_HEVCWithAlpha;
 520         }
 521         return kCMVideoCodecType_HEVC;
 522     case AV_CODEC_ID_PRORES:
 523         if (desc && (desc->flags & AV_PIX_FMT_FLAG_ALPHA))
 524             avctx->bits_per_coded_sample = 32;
 525         switch (profile) {
 526         case AV_PROFILE_PRORES_PROXY:
 527             return MKBETAG('a','p','c','o'); // kCMVideoCodecType_AppleProRes422Proxy
 528         case AV_PROFILE_PRORES_LT:
 529             return MKBETAG('a','p','c','s'); // kCMVideoCodecType_AppleProRes422LT
 530         case AV_PROFILE_PRORES_STANDARD:
 531             return MKBETAG('a','p','c','n'); // kCMVideoCodecType_AppleProRes422
 532         case AV_PROFILE_PRORES_HQ:
 533             return MKBETAG('a','p','c','h'); // kCMVideoCodecType_AppleProRes422HQ
 534         case AV_PROFILE_PRORES_4444:
 535             return MKBETAG('a','p','4','h'); // kCMVideoCodecType_AppleProRes4444
 536         case AV_PROFILE_PRORES_XQ:
 537             return MKBETAG('a','p','4','x'); // kCMVideoCodecType_AppleProRes4444XQ
 538
 539         default:
 540             av_log(avctx, AV_LOG_ERROR, "Unknown profile ID: %d, using auto\n", profile);
 541         case AV_PROFILE_UNKNOWN:
 542             if (desc &&
 543                 ((desc->flags & AV_PIX_FMT_FLAG_ALPHA) ||
 544                   desc->log2_chroma_w == 0))
 545                 return MKBETAG('a','p','4','h'); // kCMVideoCodecType_AppleProRes4444
 546             else
 547                 return MKBETAG('a','p','c','n'); // kCMVideoCodecType_AppleProRes422
 548         }
 549     default:               return 0;
 550     }
 551 }
 552
 553 /**
 554  * Get the parameter sets from a CMSampleBufferRef.
 555  * @param dst If *dst isn't NULL, the parameters are copied into existing
 556  *            memory. *dst_size must be set accordingly when *dst != NULL.
 557  *            If *dst is NULL, it will be allocated.
 558  *            In all cases, *dst_size is set to the number of bytes used starting
 559  *            at *dst.
 560  */
 561 static int get_params_size(
 562     AVCodecContext              *avctx,
 563     CMVideoFormatDescriptionRef vid_fmt,
 564     size_t                      *size)
 565 {
 566     VTEncContext *vtctx = avctx->priv_data;
 567     size_t total_size = 0;
 568     size_t ps_count;
 569     int is_count_bad = 0;
 570     size_t i;
 571     int status;
 572     status = vtctx->get_param_set_func(vid_fmt,
 573                                        0,
 574                                        NULL,
 575                                        NULL,
 576                                        &ps_count,
 577                                        NULL);
 578     if (status) {
 579         is_count_bad = 1;
 580         ps_count     = 0;
 581         status       = 0;
 582     }
 583
 584     for (i = 0; i < ps_count || is_count_bad; i++) {
 585         const uint8_t *ps;
 586         size_t ps_size;
 587         status = vtctx->get_param_set_func(vid_fmt,
 588                                            i,
 589                                            &ps,
 590                                            &ps_size,
 591                                            NULL,
 592                                            NULL);
 593         if (status) {
 594             /*
 595              * When ps_count is invalid, status != 0 ends the loop normally
 596              * unless we didn't get any parameter sets.
 597              */
 598             if (i > 0 && is_count_bad) status = 0;
 599
 600             break;
 601         }
 602
 603         total_size += ps_size + sizeof(start_code);
 604     }
 605
 606     if (status) {
 607         av_log(avctx, AV_LOG_ERROR, "Error getting parameter set sizes: %d\n", status);
 608         return AVERROR_EXTERNAL;
 609     }
 610
 611     *size = total_size;
 612     return 0;
 613 }
 614
 615 static int copy_param_sets(
 616     AVCodecContext              *avctx,
 617     CMVideoFormatDescriptionRef vid_fmt,
 618     uint8_t                     *dst,
 619     size_t                      dst_size)
 620 {
 621     VTEncContext *vtctx = avctx->priv_data;
 622     size_t ps_count;
 623     int is_count_bad = 0;
 624     int status;
 625     size_t offset = 0;
 626     size_t i;
 627
 628     status = vtctx->get_param_set_func(vid_fmt,
 629                                        0,
 630                                        NULL,
 631                                        NULL,
 632                                        &ps_count,
 633                                        NULL);
 634     if (status) {
 635         is_count_bad = 1;
 636         ps_count     = 0;
 637         status       = 0;
 638     }
 639
 640
 641     for (i = 0; i < ps_count || is_count_bad; i++) {
 642         const uint8_t *ps;
 643         size_t ps_size;
 644         size_t next_offset;
 645
 646         status = vtctx->get_param_set_func(vid_fmt,
 647                                            i,
 648                                            &ps,
 649                                            &ps_size,
 650                                            NULL,
 651                                            NULL);
 652         if (status) {
 653             if (i > 0 && is_count_bad) status = 0;
 654
 655             break;
 656         }
 657
 658         next_offset = offset + sizeof(start_code) + ps_size;
 659         if (dst_size < next_offset) {
 660             av_log(avctx, AV_LOG_ERROR, "Error: buffer too small for parameter sets.\n");
 661             return AVERROR_BUFFER_TOO_SMALL;
 662         }
 663
 664         memcpy(dst + offset, start_code, sizeof(start_code));
 665         offset += sizeof(start_code);
 666
 667         memcpy(dst + offset, ps, ps_size);
 668         offset = next_offset;
 669     }
 670
 671     if (status) {
 672         av_log(avctx, AV_LOG_ERROR, "Error getting parameter set data: %d\n", status);
 673         return AVERROR_EXTERNAL;
 674     }
 675
 676     return 0;
 677 }
 678
 679 static int set_extradata(AVCodecContext *avctx, CMSampleBufferRef sample_buffer)
 680 {
 681     VTEncContext *vtctx = avctx->priv_data;
 682     CMVideoFormatDescriptionRef vid_fmt;
 683     size_t total_size;
 684     int status;
 685
 686     vid_fmt = CMSampleBufferGetFormatDescription(sample_buffer);
 687     if (!vid_fmt) {
 688         av_log(avctx, AV_LOG_ERROR, "No video format.\n");
 689         return AVERROR_EXTERNAL;
 690     }
 691
 692     if (vtctx->get_param_set_func) {
 693         status = get_params_size(avctx, vid_fmt, &total_size);
 694         if (status) {
 695             av_log(avctx, AV_LOG_ERROR, "Could not get parameter sets.\n");
 696             return status;
 697         }
 698
 699         avctx->extradata = av_mallocz(total_size + AV_INPUT_BUFFER_PADDING_SIZE);
 700         if (!avctx->extradata) {
 701             return AVERROR(ENOMEM);
 702         }
 703         avctx->extradata_size = total_size;
 704
 705         status = copy_param_sets(avctx, vid_fmt, avctx->extradata, total_size);
 706
 707         if (status) {
 708             av_log(avctx, AV_LOG_ERROR, "Could not copy param sets.\n");
 709             return status;
 710         }
 711     } else {
 712         CFDataRef data = CMFormatDescriptionGetExtension(vid_fmt, kCMFormatDescriptionExtension_VerbatimSampleDescription);
 713         if (data && CFGetTypeID(data) == CFDataGetTypeID()) {
 714             CFIndex size = CFDataGetLength(data);
 715
 716             avctx->extradata = av_mallocz(size + AV_INPUT_BUFFER_PADDING_SIZE);
 717             if (!avctx->extradata)
 718                 return AVERROR(ENOMEM);
 719             avctx->extradata_size = size;
 720
 721             CFDataGetBytes(data, CFRangeMake(0, size), avctx->extradata);
 722         }
 723     }
 724
 725     return 0;
 726 }
 727
 728 static void vtenc_output_callback(
 729     void *ctx,
 730     void *sourceFrameCtx,
 731     OSStatus status,
 732     VTEncodeInfoFlags flags,
 733     CMSampleBufferRef sample_buffer)
 734 {
 735     AVCodecContext *avctx = ctx;
 736     VTEncContext   *vtctx = avctx->priv_data;
 737     BufNode *info = sourceFrameCtx;
 738
 739     av_buffer_unref(&info->frame_buf);
 740     if (vtctx->async_error) {
 741         vtenc_free_buf_node(info);
 742         return;
 743     }
 744
 745     if (status) {
 746         vtenc_free_buf_node(info);
 747         av_log(avctx, AV_LOG_ERROR, "Error encoding frame: %d\n", (int)status);
 748         set_async_error(vtctx, AVERROR_EXTERNAL);
 749         return;
 750     }
 751
 752     if (!sample_buffer) {
 753         return;
 754     }
 755
 756     CFRetain(sample_buffer);
 757     info->cm_buffer = sample_buffer;
 758
 759     if (!avctx->extradata && (avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER)) {
 760         int set_status = set_extradata(avctx, sample_buffer);
 761         if (set_status) {
 762             vtenc_free_buf_node(info);
 763             set_async_error(vtctx, set_status);
 764             return;
 765         }
 766     }
 767
 768     vtenc_q_push(vtctx, info);
 769 }
 770
 771 static int get_length_code_size(
 772     AVCodecContext    *avctx,
 773     CMSampleBufferRef sample_buffer,
 774     size_t            *size)
 775 {
 776     VTEncContext *vtctx = avctx->priv_data;
 777     CMVideoFormatDescriptionRef vid_fmt;
 778     int isize;
 779     int status;
 780
 781     vid_fmt = CMSampleBufferGetFormatDescription(sample_buffer);
 782     if (!vid_fmt) {
 783         av_log(avctx, AV_LOG_ERROR, "Error getting buffer format description.\n");
 784         return AVERROR_EXTERNAL;
 785     }
 786
 787     status = vtctx->get_param_set_func(vid_fmt,
 788                                        0,
 789                                        NULL,
 790                                        NULL,
 791                                        NULL,
 792                                        &isize);
 793     if (status) {
 794         av_log(avctx, AV_LOG_ERROR, "Error getting length code size: %d\n", status);
 795         return AVERROR_EXTERNAL;
 796     }
 797
 798     *size = isize;
 799     return 0;
 800 }
 801
 802 /*
 803  * Returns true on success.
 804  *
 805  * If profile_level_val is NULL and this method returns true, don't specify the
 806  * profile/level to the encoder.
 807  */
 808 static bool get_vt_h264_profile_level(AVCodecContext *avctx,
 809                                       CFStringRef    *profile_level_val)
 810 {
 811     VTEncContext *vtctx = avctx->priv_data;
 812     int profile = vtctx->profile;
 813
 814     if (profile == AV_PROFILE_UNKNOWN && vtctx->level) {
 815         //Need to pick a profile if level is not auto-selected.
 816         profile = vtctx->has_b_frames ? AV_PROFILE_H264_MAIN : AV_PROFILE_H264_BASELINE;
 817     }
 818
 819     *profile_level_val = NULL;
 820
 821     switch (profile) {
 822         case AV_PROFILE_UNKNOWN:
 823             return true;
 824
 825         case AV_PROFILE_H264_BASELINE:
 826             switch (vtctx->level) {
 827                 case  0: *profile_level_val =
 828                                   compat_keys.kVTProfileLevel_H264_Baseline_AutoLevel; break;
 829                 case 13: *profile_level_val = kVTProfileLevel_H264_Baseline_1_3;       break;
 830                 case 30: *profile_level_val = kVTProfileLevel_H264_Baseline_3_0;       break;
 831                 case 31: *profile_level_val = kVTProfileLevel_H264_Baseline_3_1;       break;
 832                 case 32: *profile_level_val = kVTProfileLevel_H264_Baseline_3_2;       break;
 833                 case 40: *profile_level_val =
 834                                   compat_keys.kVTProfileLevel_H264_Baseline_4_0;       break;
 835                 case 41: *profile_level_val = kVTProfileLevel_H264_Baseline_4_1;       break;
 836                 case 42: *profile_level_val =
 837                                   compat_keys.kVTProfileLevel_H264_Baseline_4_2;       break;
 838                 case 50: *profile_level_val =
 839                                   compat_keys.kVTProfileLevel_H264_Baseline_5_0;       break;
 840                 case 51: *profile_level_val =
 841                                   compat_keys.kVTProfileLevel_H264_Baseline_5_1;       break;
 842                 case 52: *profile_level_val =
 843                                   compat_keys.kVTProfileLevel_H264_Baseline_5_2;       break;
 844             }
 845             break;
 846
 847         case AV_PROFILE_H264_CONSTRAINED_BASELINE:
 848             *profile_level_val =  compat_keys.kVTProfileLevel_H264_ConstrainedBaseline_AutoLevel;
 849
 850             if (vtctx->level != 0) {
 851                 av_log(avctx,
 852                        AV_LOG_WARNING,
 853                        "Level is auto-selected when constrained-baseline "
 854                        "profile is used. The output may be encoded with a "
 855                        "different level.\n");
 856             }
 857             break;
 858
 859         case AV_PROFILE_H264_MAIN:
 860             switch (vtctx->level) {
 861                 case  0: *profile_level_val =
 862                                   compat_keys.kVTProfileLevel_H264_Main_AutoLevel; break;
 863                 case 30: *profile_level_val = kVTProfileLevel_H264_Main_3_0;       break;
 864                 case 31: *profile_level_val = kVTProfileLevel_H264_Main_3_1;       break;
 865                 case 32: *profile_level_val = kVTProfileLevel_H264_Main_3_2;       break;
 866                 case 40: *profile_level_val = kVTProfileLevel_H264_Main_4_0;       break;
 867                 case 41: *profile_level_val = kVTProfileLevel_H264_Main_4_1;       break;
 868                 case 42: *profile_level_val =
 869                                   compat_keys.kVTProfileLevel_H264_Main_4_2;       break;
 870                 case 50: *profile_level_val = kVTProfileLevel_H264_Main_5_0;       break;
 871                 case 51: *profile_level_val =
 872                                   compat_keys.kVTProfileLevel_H264_Main_5_1;       break;
 873                 case 52: *profile_level_val =
 874                                   compat_keys.kVTProfileLevel_H264_Main_5_2;       break;
 875             }
 876             break;
 877
 878         case H264_PROFILE_CONSTRAINED_HIGH:
 879             *profile_level_val =  compat_keys.kVTProfileLevel_H264_ConstrainedHigh_AutoLevel;
 880
 881             if (vtctx->level != 0) {
 882                 av_log(avctx,
 883                       AV_LOG_WARNING,
 884                        "Level is auto-selected when constrained-high profile "
 885                        "is used. The output may be encoded with a different "
 886                        "level.\n");
 887             }
 888             break;
 889
 890         case AV_PROFILE_H264_HIGH:
 891             switch (vtctx->level) {
 892                 case  0: *profile_level_val =
 893                                   compat_keys.kVTProfileLevel_H264_High_AutoLevel; break;
 894                 case 30: *profile_level_val =
 895                                   compat_keys.kVTProfileLevel_H264_High_3_0;       break;
 896                 case 31: *profile_level_val =
 897                                   compat_keys.kVTProfileLevel_H264_High_3_1;       break;
 898                 case 32: *profile_level_val =
 899                                   compat_keys.kVTProfileLevel_H264_High_3_2;       break;
 900                 case 40: *profile_level_val =
 901                                   compat_keys.kVTProfileLevel_H264_High_4_0;       break;
 902                 case 41: *profile_level_val =
 903                                   compat_keys.kVTProfileLevel_H264_High_4_1;       break;
 904                 case 42: *profile_level_val =
 905                                   compat_keys.kVTProfileLevel_H264_High_4_2;       break;
 906                 case 50: *profile_level_val = kVTProfileLevel_H264_High_5_0;       break;
 907                 case 51: *profile_level_val =
 908                                   compat_keys.kVTProfileLevel_H264_High_5_1;       break;
 909                 case 52: *profile_level_val =
 910                                   compat_keys.kVTProfileLevel_H264_High_5_2;       break;
 911             }
 912             break;
 913         case AV_PROFILE_H264_EXTENDED:
 914             switch (vtctx->level) {
 915                 case  0: *profile_level_val =
 916                                   compat_keys.kVTProfileLevel_H264_Extended_AutoLevel; break;
 917                 case 50: *profile_level_val =
 918                                   compat_keys.kVTProfileLevel_H264_Extended_5_0;       break;
 919             }
 920             break;
 921     }
 922
 923     if (!*profile_level_val) {
 924         av_log(avctx, AV_LOG_ERROR, "Invalid Profile/Level.\n");
 925         return false;
 926     }
 927
 928     return true;
 929 }
 930
 931 /*
 932  * Returns true on success.
 933  *
 934  * If profile_level_val is NULL and this method returns true, don't specify the
 935  * profile/level to the encoder.
 936  */
 937 static bool get_vt_hevc_profile_level(AVCodecContext *avctx,
 938                                       CFStringRef    *profile_level_val)
 939 {
 940     VTEncContext *vtctx = avctx->priv_data;
 941     int profile = vtctx->profile;
 942     const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(
 943             avctx->pix_fmt == AV_PIX_FMT_VIDEOTOOLBOX ? avctx->sw_pix_fmt
 944                                                       : avctx->pix_fmt);
 945     int bit_depth = desc ? desc->comp[0].depth : 0;
 946
 947     *profile_level_val = NULL;
 948
 949     switch (profile) {
 950         case AV_PROFILE_UNKNOWN:
 951             // Set profile automatically if user don't specify
 952             if (bit_depth == 10) {
 953                 *profile_level_val =
 954                         compat_keys.kVTProfileLevel_HEVC_Main10_AutoLevel;
 955                 break;
 956             }
 957             return true;
 958         case AV_PROFILE_HEVC_MAIN:
 959             if (bit_depth > 0 && bit_depth != 8)
 960                 av_log(avctx, AV_LOG_WARNING,
 961                        "main profile with %d bit input\n", bit_depth);
 962             *profile_level_val =
 963                 compat_keys.kVTProfileLevel_HEVC_Main_AutoLevel;
 964             break;
 965         case AV_PROFILE_HEVC_MAIN_10:
 966             if (bit_depth > 0 && bit_depth != 10) {
 967                 av_log(avctx, AV_LOG_ERROR,
 968                        "Invalid main10 profile with %d bit input\n", bit_depth);
 969                 return false;
 970             }
 971             *profile_level_val =
 972                 compat_keys.kVTProfileLevel_HEVC_Main10_AutoLevel;
 973             break;
 974     }
 975
 976     if (!*profile_level_val) {
 977         av_log(avctx, AV_LOG_ERROR, "Invalid Profile/Level.\n");
 978         return false;
 979     }
 980
 981     return true;
 982 }
 983
 984 static int get_cv_pixel_format(AVCodecContext* avctx,
 985                                enum AVPixelFormat fmt,
 986                                enum AVColorRange range,
 987                                int* av_pixel_format,
 988                                int* range_guessed)
 989 {
 990     const char *range_name;
 991     if (range_guessed) *range_guessed = range != AVCOL_RANGE_MPEG &&
 992                                         range != AVCOL_RANGE_JPEG;
 993
 994     //MPEG range is used when no range is set
 995     *av_pixel_format = av_map_videotoolbox_format_from_pixfmt2(fmt, range == AVCOL_RANGE_JPEG);
 996     if (*av_pixel_format)
 997         return 0;
 998
 999     range_name = av_color_range_name(range);
1000     av_log(avctx, AV_LOG_ERROR,
1001         "Could not get pixel format for color format '%s' range '%s'.\n",
1002         av_get_pix_fmt_name(fmt),
1003         range_name ? range_name : "Unknown");
1004
1005     return AVERROR(EINVAL);
1006 }
1007
1008 static void add_color_attr(AVCodecContext *avctx, CFMutableDictionaryRef dict) {
1009     VTEncContext *vtctx = avctx->priv_data;
1010
1011     if (vtctx->color_primaries) {
1012         CFDictionarySetValue(dict,
1013                              kCVImageBufferColorPrimariesKey,
1014                              vtctx->color_primaries);
1015     }
1016
1017     if (vtctx->transfer_function) {
1018         CFDictionarySetValue(dict,
1019                              kCVImageBufferTransferFunctionKey,
1020                              vtctx->transfer_function);
1021     }
1022
1023     if (vtctx->ycbcr_matrix) {
1024         CFDictionarySetValue(dict,
1025                              kCVImageBufferYCbCrMatrixKey,
1026                              vtctx->ycbcr_matrix);
1027     }
1028 }
1029
1030 static int create_cv_pixel_buffer_info(AVCodecContext* avctx,
1031                                        CFMutableDictionaryRef* dict)
1032 {
1033     CFNumberRef cv_color_format_num = NULL;
1034     CFNumberRef width_num = NULL;
1035     CFNumberRef height_num = NULL;
1036     CFMutableDictionaryRef pixel_buffer_info = NULL;
1037     int cv_color_format;
1038     int status = get_cv_pixel_format(avctx,
1039                                      avctx->pix_fmt,
1040                                      avctx->color_range,
1041                                      &cv_color_format,
1042                                      NULL);
1043     if (status) return status;
1044
1045     pixel_buffer_info = CFDictionaryCreateMutable(
1046                             kCFAllocatorDefault,
1047                             20,
1048                             &kCFCopyStringDictionaryKeyCallBacks,
1049                             &kCFTypeDictionaryValueCallBacks);
1050
1051     if (!pixel_buffer_info) goto pbinfo_nomem;
1052
1053     cv_color_format_num = CFNumberCreate(kCFAllocatorDefault,
1054                                          kCFNumberSInt32Type,
1055                                          &cv_color_format);
1056     if (!cv_color_format_num) goto pbinfo_nomem;
1057
1058     CFDictionarySetValue(pixel_buffer_info,
1059                          kCVPixelBufferPixelFormatTypeKey,
1060                          cv_color_format_num);
1061     vt_release_num(&cv_color_format_num);
1062
1063     width_num = CFNumberCreate(kCFAllocatorDefault,
1064                                kCFNumberSInt32Type,
1065                                &avctx->width);
1066     if (!width_num) goto pbinfo_nomem;
1067
1068     CFDictionarySetValue(pixel_buffer_info,
1069                          kCVPixelBufferWidthKey,
1070                          width_num);
1071     vt_release_num(&width_num);
1072
1073     height_num = CFNumberCreate(kCFAllocatorDefault,
1074                                 kCFNumberSInt32Type,
1075                                 &avctx->height);
1076     if (!height_num) goto pbinfo_nomem;
1077
1078     CFDictionarySetValue(pixel_buffer_info,
1079                          kCVPixelBufferHeightKey,
1080                          height_num);
1081     vt_release_num(&height_num);
1082
1083     add_color_attr(avctx, pixel_buffer_info);
1084
1085     *dict = pixel_buffer_info;
1086     return 0;
1087
1088 pbinfo_nomem:
1089     vt_release_num(&cv_color_format_num);
1090     vt_release_num(&width_num);
1091     vt_release_num(&height_num);
1092     if (pixel_buffer_info) CFRelease(pixel_buffer_info);
1093
1094     return AVERROR(ENOMEM);
1095 }
1096
1097 static int get_cv_gamma(AVCodecContext *avctx,
1098                         CFNumberRef *gamma_level)
1099 {
1100     enum AVColorTransferCharacteristic trc = avctx->color_trc;
1101     Float32 gamma = 0;
1102     *gamma_level = NULL;
1103
1104     if (trc == AVCOL_TRC_GAMMA22)
1105         gamma = 2.2;
1106     else if (trc == AVCOL_TRC_GAMMA28)
1107         gamma = 2.8;
1108
1109     if (gamma != 0)
1110         *gamma_level = CFNumberCreate(NULL, kCFNumberFloat32Type, &gamma);
1111     return 0;
1112 }
1113
1114 // constant quality only on Macs with Apple Silicon
1115 static bool vtenc_qscale_enabled(void)
1116 {
1117     return !TARGET_OS_IPHONE && TARGET_CPU_ARM64;
1118 }
1119
1120 static void set_encoder_property_or_log(AVCodecContext *avctx,
1121                                         CFStringRef key,
1122                                         const char *print_option_name,
1123                                         CFTypeRef value) {
1124     int status;
1125     VTEncContext *vtctx = avctx->priv_data;
1126
1127     status = VTSessionSetProperty(vtctx->session, key, value);
1128     if (status == kVTPropertyNotSupportedErr) {
1129         av_log(avctx,
1130                AV_LOG_INFO,
1131                "This device does not support the %s option. Value ignored.\n",
1132                print_option_name);
1133     } else if (status != 0) {
1134         av_log(avctx,
1135                AV_LOG_ERROR,
1136                "Error setting %s: Error %d\n",
1137                print_option_name,
1138                status);
1139     }
1140 }
1141
1142 static int set_encoder_int_property_or_log(AVCodecContext* avctx,
1143                                            CFStringRef key,
1144                                            const char* print_option_name,
1145                                            int value) {
1146     CFNumberRef value_cfnum = CFNumberCreate(kCFAllocatorDefault,
1147                                              kCFNumberIntType,
1148                                              &value);
1149
1150     if (value_cfnum == NULL) {
1151         return AVERROR(ENOMEM);
1152     }
1153
1154     set_encoder_property_or_log(avctx, key, print_option_name, value_cfnum);
1155
1156     CFRelease(value_cfnum);
1157
1158     return 0;
1159 }
1160
1161 static int vtenc_create_encoder(AVCodecContext   *avctx,
1162                                 CMVideoCodecType codec_type,
1163                                 CFStringRef      profile_level,
1164                                 CFNumberRef      gamma_level,
1165                                 CFDictionaryRef  enc_info,
1166                                 CFDictionaryRef  pixel_buffer_info,
1167                                 bool constant_bit_rate,
1168                                 VTCompressionSessionRef *session)
1169 {
1170     VTEncContext *vtctx = avctx->priv_data;
1171     SInt32       bit_rate = avctx->bit_rate;
1172     SInt32       max_rate = avctx->rc_max_rate;
1173     Float32      quality = avctx->global_quality / FF_QP2LAMBDA;
1174     CFNumberRef  bit_rate_num;
1175     CFNumberRef  quality_num;
1176     CFNumberRef  bytes_per_second;
1177     CFNumberRef  one_second;
1178     CFArrayRef   data_rate_limits;
1179     int64_t      bytes_per_second_value = 0;
1180     int64_t      one_second_value = 0;
1181     void         *nums[2];
1182
1183     int status = VTCompressionSessionCreate(kCFAllocatorDefault,
1184                                             avctx->width,
1185                                             avctx->height,
1186                                             codec_type,
1187                                             enc_info,
1188                                             pixel_buffer_info,
1189                                             kCFAllocatorDefault,
1190                                             vtenc_output_callback,
1191                                             avctx,
1192                                             session);
1193
1194     if (status || !vtctx->session) {
1195         av_log(avctx, AV_LOG_ERROR, "Error: cannot create compression session: %d\n", status);
1196
1197 #if !TARGET_OS_IPHONE
1198         if (!vtctx->allow_sw) {
1199             av_log(avctx, AV_LOG_ERROR, "Try -allow_sw 1. The hardware encoder may be busy, or not supported.\n");
1200         }
1201 #endif
1202
1203         return AVERROR_EXTERNAL;
1204     }
1205
1206 #if defined (MAC_OS_X_VERSION_10_13) && (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_13)
1207     if (__builtin_available(macOS 10.13, *)) {
1208         if (vtctx->supported_props) {
1209             CFRelease(vtctx->supported_props);
1210             vtctx->supported_props = NULL;
1211         }
1212         status = VTCopySupportedPropertyDictionaryForEncoder(avctx->width,
1213                                                              avctx->height,
1214                                                              codec_type,
1215                                                              enc_info,
1216                                                              NULL,
1217                                                              &vtctx->supported_props);
1218
1219         if (status != noErr) {
1220             av_log(avctx, AV_LOG_ERROR,"Error retrieving the supported property dictionary err=%"PRId64"\n", (int64_t)status);
1221             return AVERROR_EXTERNAL;
1222         }
1223     }
1224 #endif
1225
1226     status = vt_dump_encoder(avctx);
1227     if (status < 0)
1228         return status;
1229
1230     if (avctx->flags & AV_CODEC_FLAG_QSCALE && !vtenc_qscale_enabled()) {
1231         av_log(avctx, AV_LOG_ERROR, "Error: -q:v qscale not available for encoder. Use -b:v bitrate instead.\n");
1232         return AVERROR_EXTERNAL;
1233     }
1234
1235     if (avctx->flags & AV_CODEC_FLAG_QSCALE) {
1236         quality = quality >= 100 ? 1.0 : quality / 100;
1237         quality_num = CFNumberCreate(kCFAllocatorDefault,
1238                                      kCFNumberFloat32Type,
1239                                      &quality);
1240         if (!quality_num) return AVERROR(ENOMEM);
1241
1242         status = VTSessionSetProperty(vtctx->session,
1243                                       kVTCompressionPropertyKey_Quality,
1244                                       quality_num);
1245         CFRelease(quality_num);
1246     } else if (avctx->codec_id != AV_CODEC_ID_PRORES) {
1247         bit_rate_num = CFNumberCreate(kCFAllocatorDefault,
1248                                       kCFNumberSInt32Type,
1249                                       &bit_rate);
1250         if (!bit_rate_num) return AVERROR(ENOMEM);
1251
1252         if (constant_bit_rate) {
1253             status = VTSessionSetProperty(vtctx->session,
1254                                           compat_keys.kVTCompressionPropertyKey_ConstantBitRate,
1255                                           bit_rate_num);
1256             if (status == kVTPropertyNotSupportedErr) {
1257                 av_log(avctx, AV_LOG_ERROR, "Error: -constant_bit_rate true is not supported by the encoder.\n");
1258                 return AVERROR_EXTERNAL;
1259             }
1260         } else {
1261             status = VTSessionSetProperty(vtctx->session,
1262                                           kVTCompressionPropertyKey_AverageBitRate,
1263                                           bit_rate_num);
1264         }
1265
1266         CFRelease(bit_rate_num);
1267     }
1268
1269     if (status) {
1270         av_log(avctx, AV_LOG_ERROR, "Error setting bitrate property: %d\n", status);
1271         return AVERROR_EXTERNAL;
1272     }
1273
1274     if (vtctx->prio_speed >= 0) {
1275         status = VTSessionSetProperty(vtctx->session,
1276                                       compat_keys.kVTCompressionPropertyKey_PrioritizeEncodingSpeedOverQuality,
1277                                       vtctx->prio_speed ? kCFBooleanTrue : kCFBooleanFalse);
1278         if (status) {
1279             av_log(avctx, AV_LOG_WARNING, "PrioritizeEncodingSpeedOverQuality property is not supported on this device. Ignoring.\n");
1280         }
1281     }
1282
1283     if ((vtctx->codec_id == AV_CODEC_ID_H264 || vtctx->codec_id == AV_CODEC_ID_HEVC)
1284             && max_rate > 0) {
1285         bytes_per_second_value = max_rate >> 3;
1286         bytes_per_second = CFNumberCreate(kCFAllocatorDefault,
1287                                           kCFNumberSInt64Type,
1288                                           &bytes_per_second_value);
1289         if (!bytes_per_second) {
1290             return AVERROR(ENOMEM);
1291         }
1292         one_second_value = 1;
1293         one_second = CFNumberCreate(kCFAllocatorDefault,
1294                                     kCFNumberSInt64Type,
1295                                     &one_second_value);
1296         if (!one_second) {
1297             CFRelease(bytes_per_second);
1298             return AVERROR(ENOMEM);
1299         }
1300         nums[0] = (void *)bytes_per_second;
1301         nums[1] = (void *)one_second;
1302         data_rate_limits = CFArrayCreate(kCFAllocatorDefault,
1303                                          (const void **)nums,
1304                                          2,
1305                                          &kCFTypeArrayCallBacks);
1306
1307         if (!data_rate_limits) {
1308             CFRelease(bytes_per_second);
1309             CFRelease(one_second);
1310             return AVERROR(ENOMEM);
1311         }
1312         status = VTSessionSetProperty(vtctx->session,
1313                                       kVTCompressionPropertyKey_DataRateLimits,
1314                                       data_rate_limits);
1315
1316         CFRelease(bytes_per_second);
1317         CFRelease(one_second);
1318         CFRelease(data_rate_limits);
1319
1320         if (status) {
1321             av_log(avctx, AV_LOG_ERROR, "Error setting max bitrate property: %d\n", status);
1322             // kVTCompressionPropertyKey_DataRateLimits is available for HEVC
1323             // now but not on old release. There is no document about since
1324             // when. So ignore the error if it failed for hevc.
1325             if (vtctx->codec_id != AV_CODEC_ID_HEVC)
1326                 return AVERROR_EXTERNAL;
1327         }
1328     }
1329
1330     if (vtctx->codec_id == AV_CODEC_ID_HEVC) {
1331         if (avctx->pix_fmt == AV_PIX_FMT_BGRA && vtctx->alpha_quality > 0.0) {
1332             CFNumberRef alpha_quality_num = CFNumberCreate(kCFAllocatorDefault,
1333                                                            kCFNumberDoubleType,
1334                                                            &vtctx->alpha_quality);
1335             if (!alpha_quality_num) return AVERROR(ENOMEM);
1336
1337             status = VTSessionSetProperty(vtctx->session,
1338                                           compat_keys.kVTCompressionPropertyKey_TargetQualityForAlpha,
1339                                           alpha_quality_num);
1340             CFRelease(alpha_quality_num);
1341
1342             if (status) {
1343                 av_log(avctx,
1344                        AV_LOG_ERROR,
1345                        "Error setting alpha quality: %d\n",
1346                        status);
1347             }
1348         }
1349     }
1350
1351     if (profile_level) {
1352         status = VTSessionSetProperty(vtctx->session,
1353                                       kVTCompressionPropertyKey_ProfileLevel,
1354                                       profile_level);
1355         if (status) {
1356             av_log(avctx, AV_LOG_ERROR, "Error setting profile/level property: %d. Output will be encoded using a supported profile/level combination.\n", status);
1357         }
1358     }
1359
1360     if (avctx->gop_size > 0 && avctx->codec_id != AV_CODEC_ID_PRORES) {
1361         CFNumberRef interval = CFNumberCreate(kCFAllocatorDefault,
1362                                               kCFNumberIntType,
1363                                               &avctx->gop_size);
1364         if (!interval) {
1365             return AVERROR(ENOMEM);
1366         }
1367
1368         status = VTSessionSetProperty(vtctx->session,
1369                                       kVTCompressionPropertyKey_MaxKeyFrameInterval,
1370                                       interval);
1371         CFRelease(interval);
1372
1373         if (status) {
1374             av_log(avctx, AV_LOG_ERROR, "Error setting 'max key-frame interval' property: %d\n", status);
1375             return AVERROR_EXTERNAL;
1376         }
1377     }
1378
1379     if (vtctx->frames_before) {
1380         status = VTSessionSetProperty(vtctx->session,
1381                                       kVTCompressionPropertyKey_MoreFramesBeforeStart,
1382                                       kCFBooleanTrue);
1383
1384         if (status == kVTPropertyNotSupportedErr) {
1385             av_log(avctx, AV_LOG_WARNING, "frames_before property is not supported on this device. Ignoring.\n");
1386         } else if (status) {
1387             av_log(avctx, AV_LOG_ERROR, "Error setting frames_before property: %d\n", status);
1388         }
1389     }
1390
1391     if (vtctx->frames_after) {
1392         status = VTSessionSetProperty(vtctx->session,
1393                                       kVTCompressionPropertyKey_MoreFramesAfterEnd,
1394                                       kCFBooleanTrue);
1395
1396         if (status == kVTPropertyNotSupportedErr) {
1397             av_log(avctx, AV_LOG_WARNING, "frames_after property is not supported on this device. Ignoring.\n");
1398         } else if (status) {
1399             av_log(avctx, AV_LOG_ERROR, "Error setting frames_after property: %d\n", status);
1400         }
1401     }
1402
1403     if (avctx->sample_aspect_ratio.num != 0) {
1404         CFNumberRef num;
1405         CFNumberRef den;
1406         CFMutableDictionaryRef par;
1407         AVRational *avpar = &avctx->sample_aspect_ratio;
1408
1409         av_reduce(&avpar->num, &avpar->den,
1410                    avpar->num,  avpar->den,
1411                   0xFFFFFFFF);
1412
1413         num = CFNumberCreate(kCFAllocatorDefault,
1414                              kCFNumberIntType,
1415                              &avpar->num);
1416
1417         den = CFNumberCreate(kCFAllocatorDefault,
1418                              kCFNumberIntType,
1419                              &avpar->den);
1420
1421
1422
1423         par = CFDictionaryCreateMutable(kCFAllocatorDefault,
1424                                         2,
1425                                         &kCFCopyStringDictionaryKeyCallBacks,
1426                                         &kCFTypeDictionaryValueCallBacks);
1427
1428         if (!par || !num || !den) {
1429             if (par) CFRelease(par);
1430             if (num) CFRelease(num);
1431             if (den) CFRelease(den);
1432
1433             return AVERROR(ENOMEM);
1434         }
1435
1436         CFDictionarySetValue(
1437             par,
1438             kCMFormatDescriptionKey_PixelAspectRatioHorizontalSpacing,
1439             num);
1440
1441         CFDictionarySetValue(
1442             par,
1443             kCMFormatDescriptionKey_PixelAspectRatioVerticalSpacing,
1444             den);
1445
1446         status = VTSessionSetProperty(vtctx->session,
1447                                       kVTCompressionPropertyKey_PixelAspectRatio,
1448                                       par);
1449
1450         CFRelease(par);
1451         CFRelease(num);
1452         CFRelease(den);
1453
1454         if (status) {
1455             av_log(avctx,
1456                    AV_LOG_ERROR,
1457                    "Error setting pixel aspect ratio to %d:%d: %d.\n",
1458                    avctx->sample_aspect_ratio.num,
1459                    avctx->sample_aspect_ratio.den,
1460                    status);
1461
1462             return AVERROR_EXTERNAL;
1463         }
1464     }
1465
1466
1467     if (vtctx->transfer_function) {
1468         status = VTSessionSetProperty(vtctx->session,
1469                                       kVTCompressionPropertyKey_TransferFunction,
1470                                       vtctx->transfer_function);
1471
1472         if (status) {
1473             av_log(avctx, AV_LOG_WARNING, "Could not set transfer function: %d\n", status);
1474         }
1475     }
1476
1477
1478     if (vtctx->ycbcr_matrix) {
1479         status = VTSessionSetProperty(vtctx->session,
1480                                       kVTCompressionPropertyKey_YCbCrMatrix,
1481                                       vtctx->ycbcr_matrix);
1482
1483         if (status) {
1484             av_log(avctx, AV_LOG_WARNING, "Could not set ycbcr matrix: %d\n", status);
1485         }
1486     }
1487
1488
1489     if (vtctx->color_primaries) {
1490         status = VTSessionSetProperty(vtctx->session,
1491                                       kVTCompressionPropertyKey_ColorPrimaries,
1492                                       vtctx->color_primaries);
1493
1494         if (status) {
1495             av_log(avctx, AV_LOG_WARNING, "Could not set color primaries: %d\n", status);
1496         }
1497     }
1498
1499     if (gamma_level) {
1500         status = VTSessionSetProperty(vtctx->session,
1501                                       kCVImageBufferGammaLevelKey,
1502                                       gamma_level);
1503
1504         if (status) {
1505             av_log(avctx, AV_LOG_WARNING, "Could not set gamma level: %d\n", status);
1506         }
1507     }
1508
1509     if (!vtctx->has_b_frames && avctx->codec_id != AV_CODEC_ID_PRORES) {
1510         status = VTSessionSetProperty(vtctx->session,
1511                                       kVTCompressionPropertyKey_AllowFrameReordering,
1512                                       kCFBooleanFalse);
1513
1514         if (status) {
1515             av_log(avctx, AV_LOG_ERROR, "Error setting 'allow frame reordering' property: %d\n", status);
1516             return AVERROR_EXTERNAL;
1517         }
1518     }
1519
1520     if (vtctx->entropy != VT_ENTROPY_NOT_SET) {
1521         CFStringRef entropy = vtctx->entropy == VT_CABAC ?
1522                                 compat_keys.kVTH264EntropyMode_CABAC:
1523                                 compat_keys.kVTH264EntropyMode_CAVLC;
1524
1525         status = VTSessionSetProperty(vtctx->session,
1526                                       compat_keys.kVTCompressionPropertyKey_H264EntropyMode,
1527                                       entropy);
1528
1529         if (status) {
1530             av_log(avctx, AV_LOG_ERROR, "Error setting entropy property: %d\n", status);
1531         }
1532     }
1533
1534     if (vtctx->realtime >= 0) {
1535         status = VTSessionSetProperty(vtctx->session,
1536                                       compat_keys.kVTCompressionPropertyKey_RealTime,
1537                                       vtctx->realtime ? kCFBooleanTrue : kCFBooleanFalse);
1538
1539         if (status) {
1540             av_log(avctx, AV_LOG_ERROR, "Error setting realtime property: %d\n", status);
1541         }
1542     }
1543
1544     if ((avctx->flags & AV_CODEC_FLAG_CLOSED_GOP) != 0) {
1545         set_encoder_property_or_log(avctx,
1546                                     compat_keys.kVTCompressionPropertyKey_AllowOpenGOP,
1547                                     "AllowOpenGop",
1548                                     kCFBooleanFalse);
1549     }
1550
1551     if (avctx->qmin >= 0) {
1552         status = set_encoder_int_property_or_log(avctx,
1553                                                  compat_keys.kVTCompressionPropertyKey_MinAllowedFrameQP,
1554                                                  "qmin",
1555                                                  avctx->qmin);
1556
1557         if (status != 0) {
1558             return status;
1559         }
1560     }
1561
1562     if (avctx->qmax >= 0) {
1563         status = set_encoder_int_property_or_log(avctx,
1564                                                  compat_keys.kVTCompressionPropertyKey_MaxAllowedFrameQP,
1565                                                  "qmax",
1566                                                  avctx->qmax);
1567
1568         if (status != 0) {
1569             return status;
1570         }
1571     }
1572
1573     if (vtctx->max_slice_bytes >= 0 && avctx->codec_id == AV_CODEC_ID_H264) {
1574         status = set_encoder_int_property_or_log(avctx,
1575                                                  kVTCompressionPropertyKey_MaxH264SliceBytes,
1576                                                  "max_slice_bytes",
1577                                                  vtctx->max_slice_bytes);
1578
1579         if (status != 0) {
1580             return status;
1581         }
1582     }
1583
1584     if (vtctx->power_efficient >= 0) {
1585         set_encoder_property_or_log(avctx,
1586                                     compat_keys.kVTCompressionPropertyKey_MaximizePowerEfficiency,
1587                                     "power_efficient",
1588                                     vtctx->power_efficient ? kCFBooleanTrue : kCFBooleanFalse);
1589     }
1590
1591     if (vtctx->max_ref_frames > 0) {
1592         status = set_encoder_int_property_or_log(avctx,
1593                                                  compat_keys.kVTCompressionPropertyKey_ReferenceBufferCount,
1594                                                  "max_ref_frames",
1595                                                  vtctx->max_ref_frames);
1596
1597         if (status != 0) {
1598             return status;
1599         }
1600     }
1601
1602     status = VTCompressionSessionPrepareToEncodeFrames(vtctx->session);
1603     if (status) {
1604         av_log(avctx, AV_LOG_ERROR, "Error: cannot prepare encoder: %d\n", status);
1605         return AVERROR_EXTERNAL;
1606     }
1607
1608     return 0;
1609 }
1610
1611 static int vtenc_configure_encoder(AVCodecContext *avctx)
1612 {
1613     CFMutableDictionaryRef enc_info;
1614     CFMutableDictionaryRef pixel_buffer_info = NULL;
1615     CMVideoCodecType       codec_type;
1616     VTEncContext           *vtctx = avctx->priv_data;
1617     CFStringRef            profile_level = NULL;
1618     CFNumberRef            gamma_level = NULL;
1619     int                    status;
1620
1621     codec_type = get_cm_codec_type(avctx, vtctx->profile, vtctx->alpha_quality);
1622     if (!codec_type) {
1623         av_log(avctx, AV_LOG_ERROR, "Error: no mapping for AVCodecID %d\n", avctx->codec_id);
1624         return AVERROR(EINVAL);
1625     }
1626
1627 #if defined(MAC_OS_X_VERSION_10_9) && !TARGET_OS_IPHONE && (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_9)
1628     if (avctx->codec_id == AV_CODEC_ID_PRORES) {
1629         if (__builtin_available(macOS 10.10, *)) {
1630             VTRegisterProfessionalVideoWorkflowVideoEncoders();
1631         }
1632     }
1633 #endif
1634
1635     vtctx->codec_id = avctx->codec_id;
1636
1637     if (vtctx->codec_id == AV_CODEC_ID_H264) {
1638         vtctx->get_param_set_func = CMVideoFormatDescriptionGetH264ParameterSetAtIndex;
1639
1640         vtctx->has_b_frames = avctx->max_b_frames > 0;
1641         if(vtctx->has_b_frames && (0xFF & vtctx->profile) == AV_PROFILE_H264_BASELINE){
1642             av_log(avctx, AV_LOG_WARNING, "Cannot use B-frames with baseline profile. Output will not contain B-frames.\n");
1643             vtctx->has_b_frames = 0;
1644         }
1645
1646         if (vtctx->entropy == VT_CABAC && (0xFF & vtctx->profile) == AV_PROFILE_H264_BASELINE) {
1647             av_log(avctx, AV_LOG_WARNING, "CABAC entropy requires 'main' or 'high' profile, but baseline was requested. Encode will not use CABAC entropy.\n");
1648             vtctx->entropy = VT_ENTROPY_NOT_SET;
1649         }
1650
1651         if (!get_vt_h264_profile_level(avctx, &profile_level)) return AVERROR(EINVAL);
1652     } else if (vtctx->codec_id == AV_CODEC_ID_HEVC) {
1653         vtctx->get_param_set_func = compat_keys.CMVideoFormatDescriptionGetHEVCParameterSetAtIndex;
1654         if (!vtctx->get_param_set_func) return AVERROR(EINVAL);
1655         if (!get_vt_hevc_profile_level(avctx, &profile_level)) return AVERROR(EINVAL);
1656         // HEVC has b-byramid
1657         vtctx->has_b_frames = avctx->max_b_frames > 0 ? 2 : 0;
1658     } else if (vtctx->codec_id == AV_CODEC_ID_PRORES) {
1659         avctx->codec_tag = av_bswap32(codec_type);
1660     }
1661
1662     enc_info = CFDictionaryCreateMutable(
1663         kCFAllocatorDefault,
1664         20,
1665         &kCFCopyStringDictionaryKeyCallBacks,
1666         &kCFTypeDictionaryValueCallBacks
1667     );
1668
1669     if (!enc_info) return AVERROR(ENOMEM);
1670
1671 #if !TARGET_OS_IPHONE
1672     if(vtctx->require_sw) {
1673         CFDictionarySetValue(enc_info,
1674                              compat_keys.kVTVideoEncoderSpecification_EnableHardwareAcceleratedVideoEncoder,
1675                              kCFBooleanFalse);
1676     } else if (!vtctx->allow_sw) {
1677         CFDictionarySetValue(enc_info,
1678                              compat_keys.kVTVideoEncoderSpecification_RequireHardwareAcceleratedVideoEncoder,
1679                              kCFBooleanTrue);
1680     } else {
1681         CFDictionarySetValue(enc_info,
1682                              compat_keys.kVTVideoEncoderSpecification_EnableHardwareAcceleratedVideoEncoder,
1683                              kCFBooleanTrue);
1684     }
1685 #endif
1686
1687     // low-latency mode: eliminate frame reordering, follow a one-in-one-out encoding mode
1688     if ((avctx->flags & AV_CODEC_FLAG_LOW_DELAY) && avctx->codec_id == AV_CODEC_ID_H264) {
1689         CFDictionarySetValue(enc_info,
1690                              compat_keys.kVTVideoEncoderSpecification_EnableLowLatencyRateControl,
1691                              kCFBooleanTrue);
1692     }
1693
1694     if (avctx->pix_fmt != AV_PIX_FMT_VIDEOTOOLBOX) {
1695         status = create_cv_pixel_buffer_info(avctx, &pixel_buffer_info);
1696         if (status)
1697             goto init_cleanup;
1698     }
1699
1700     vtctx->dts_delta = vtctx->has_b_frames ? -1 : 0;
1701
1702     get_cv_gamma(avctx, &gamma_level);
1703     vtctx->transfer_function = av_map_videotoolbox_color_trc_from_av(avctx->color_trc);
1704     vtctx->ycbcr_matrix = av_map_videotoolbox_color_matrix_from_av(avctx->colorspace);
1705     vtctx->color_primaries = av_map_videotoolbox_color_primaries_from_av(avctx->color_primaries);
1706
1707
1708     if (avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER) {
1709         status = vtenc_populate_extradata(avctx,
1710                                           codec_type,
1711                                           profile_level,
1712                                           gamma_level,
1713                                           enc_info,
1714                                           pixel_buffer_info);
1715         if (status)
1716             goto init_cleanup;
1717     }
1718
1719     status = vtenc_create_encoder(avctx,
1720                                   codec_type,
1721                                   profile_level,
1722                                   gamma_level,
1723                                   enc_info,
1724                                   pixel_buffer_info,
1725                                   vtctx->constant_bit_rate,
1726                                   &vtctx->session);
1727
1728 init_cleanup:
1729     if (gamma_level)
1730         CFRelease(gamma_level);
1731
1732     if (pixel_buffer_info)
1733         CFRelease(pixel_buffer_info);
1734
1735     CFRelease(enc_info);
1736
1737     return status;
1738 }
1739
1740 static av_cold int vtenc_init(AVCodecContext *avctx)
1741 {
1742     VTEncContext    *vtctx = avctx->priv_data;
1743     CFBooleanRef    has_b_frames_cfbool;
1744     int             status;
1745
1746     pthread_once(&once_ctrl, loadVTEncSymbols);
1747
1748     pthread_mutex_init(&vtctx->lock, NULL);
1749     pthread_cond_init(&vtctx->cv_sample_sent, NULL);
1750
1751     // It can happen when user set avctx->profile directly.
1752     if (vtctx->profile == AV_PROFILE_UNKNOWN)
1753         vtctx->profile = avctx->profile;
1754     status = vtenc_configure_encoder(avctx);
1755     if (status) return status;
1756
1757     status = VTSessionCopyProperty(vtctx->session,
1758                                    kVTCompressionPropertyKey_AllowFrameReordering,
1759                                    kCFAllocatorDefault,
1760                                    &has_b_frames_cfbool);
1761
1762     if (!status && has_b_frames_cfbool) {
1763         //Some devices don't output B-frames for main profile, even if requested.
1764         // HEVC has b-pyramid
1765         if (CFBooleanGetValue(has_b_frames_cfbool))
1766             vtctx->has_b_frames = avctx->codec_id == AV_CODEC_ID_HEVC ? 2 : 1;
1767         else
1768             vtctx->has_b_frames = 0;
1769         CFRelease(has_b_frames_cfbool);
1770     }
1771     avctx->has_b_frames = vtctx->has_b_frames;
1772
1773     return 0;
1774 }
1775
1776 static void vtenc_get_frame_info(CMSampleBufferRef buffer, bool *is_key_frame)
1777 {
1778     CFArrayRef      attachments;
1779     CFDictionaryRef attachment;
1780     CFBooleanRef    not_sync;
1781     CFIndex         len;
1782
1783     attachments = CMSampleBufferGetSampleAttachmentsArray(buffer, false);
1784     len = !attachments ? 0 : CFArrayGetCount(attachments);
1785
1786     if (!len) {
1787         *is_key_frame = true;
1788         return;
1789     }
1790
1791     attachment = CFArrayGetValueAtIndex(attachments, 0);
1792
1793     if (CFDictionaryGetValueIfPresent(attachment,
1794                                       kCMSampleAttachmentKey_NotSync,
1795                                       (const void **)&not_sync))
1796     {
1797         *is_key_frame = !CFBooleanGetValue(not_sync);
1798     } else {
1799         *is_key_frame = true;
1800     }
1801 }
1802
1803 static int is_post_sei_nal_type(int nal_type){
1804     return nal_type != H264_NAL_SEI &&
1805            nal_type != H264_NAL_SPS &&
1806            nal_type != H264_NAL_PPS &&
1807            nal_type != H264_NAL_AUD;
1808 }
1809
1810 /*
1811  * Finds the sei message start/size of type find_sei_type.
1812  * If more than one of that type exists, the last one is returned.
1813  */
1814 static int find_sei_end(AVCodecContext *avctx,
1815                         uint8_t        *nal_data,
1816                         size_t          nal_size,
1817                         uint8_t       **sei_end)
1818 {
1819     int nal_type;
1820     size_t sei_payload_size = 0;
1821     uint8_t *nal_start = nal_data;
1822     *sei_end = NULL;
1823
1824     if (!nal_size)
1825         return 0;
1826
1827     nal_type = *nal_data & 0x1F;
1828     if (nal_type != H264_NAL_SEI)
1829         return 0;
1830
1831     nal_data++;
1832     nal_size--;
1833
1834     if (nal_data[nal_size - 1] == 0x80)
1835         nal_size--;
1836
1837     while (nal_size > 0 && *nal_data > 0) {
1838         do{
1839             nal_data++;
1840             nal_size--;
1841         } while (nal_size > 0 && *nal_data == 0xFF);
1842
1843         if (!nal_size) {
1844             av_log(avctx, AV_LOG_ERROR, "Unexpected end of SEI NAL Unit parsing type.\n");
1845             return AVERROR_INVALIDDATA;
1846         }
1847
1848         do{
1849             sei_payload_size += *nal_data;
1850             nal_data++;
1851             nal_size--;
1852         } while (nal_size > 0 && *nal_data == 0xFF);
1853
1854         if (nal_size < sei_payload_size) {
1855             av_log(avctx, AV_LOG_ERROR, "Unexpected end of SEI NAL Unit parsing size.\n");
1856             return AVERROR_INVALIDDATA;
1857         }
1858
1859         nal_data += sei_payload_size;
1860         nal_size -= sei_payload_size;
1861     }
1862
1863     *sei_end = nal_data;
1864
1865     return nal_data - nal_start + 1;
1866 }
1867
1868 /**
1869  * Copies the data inserting emulation prevention bytes as needed.
1870  * Existing data in the destination can be taken into account by providing
1871  * dst with a dst_offset > 0.
1872  *
1873  * @return The number of bytes copied on success. On failure, the negative of
1874  *         the number of bytes needed to copy src is returned.
1875  */
1876 static int copy_emulation_prev(const uint8_t *src,
1877                                size_t         src_size,
1878                                uint8_t       *dst,
1879                                ssize_t        dst_offset,
1880                                size_t         dst_size)
1881 {
1882     int zeros = 0;
1883     int wrote_bytes;
1884     uint8_t* dst_start;
1885     uint8_t* dst_end = dst + dst_size;
1886     const uint8_t* src_end = src + src_size;
1887     int start_at = dst_offset > 2 ? dst_offset - 2 : 0;
1888     int i;
1889     for (i = start_at; i < dst_offset && i < dst_size; i++) {
1890         if (!dst[i])
1891             zeros++;
1892         else
1893             zeros = 0;
1894     }
1895
1896     dst += dst_offset;
1897     dst_start = dst;
1898     for (; src < src_end; src++, dst++) {
1899         if (zeros == 2) {
1900             int insert_ep3_byte = *src <= 3;
1901             if (insert_ep3_byte) {
1902                 if (dst < dst_end)
1903                     *dst = 3;
1904                 dst++;
1905             }
1906
1907             zeros = 0;
1908         }
1909
1910         if (dst < dst_end)
1911             *dst = *src;
1912
1913         if (!*src)
1914             zeros++;
1915         else
1916             zeros = 0;
1917     }
1918
1919     wrote_bytes = dst - dst_start;
1920
1921     if (dst > dst_end)
1922         return -wrote_bytes;
1923
1924     return wrote_bytes;
1925 }
1926
1927 static int write_sei(const ExtraSEI *sei,
1928                      int             sei_type,
1929                      uint8_t        *dst,
1930                      size_t          dst_size)
1931 {
1932     uint8_t *sei_start = dst;
1933     size_t remaining_sei_size = sei->size;
1934     size_t remaining_dst_size = dst_size;
1935     int header_bytes;
1936     int bytes_written;
1937     ssize_t offset;
1938
1939     if (!remaining_dst_size)
1940         return AVERROR_BUFFER_TOO_SMALL;
1941
1942     while (sei_type && remaining_dst_size != 0) {
1943         int sei_byte = sei_type > 255 ? 255 : sei_type;
1944         *dst = sei_byte;
1945
1946         sei_type -= sei_byte;
1947         dst++;
1948         remaining_dst_size--;
1949     }
1950
1951     if (!dst_size)
1952         return AVERROR_BUFFER_TOO_SMALL;
1953
1954     while (remaining_sei_size && remaining_dst_size != 0) {
1955         int size_byte = remaining_sei_size > 255 ? 255 : remaining_sei_size;
1956         *dst = size_byte;
1957
1958         remaining_sei_size -= size_byte;
1959         dst++;
1960         remaining_dst_size--;
1961     }
1962
1963     if (remaining_dst_size < sei->size)
1964         return AVERROR_BUFFER_TOO_SMALL;
1965
1966     header_bytes = dst - sei_start;
1967
1968     offset = header_bytes;
1969     bytes_written = copy_emulation_prev(sei->data,
1970                                         sei->size,
1971                                         sei_start,
1972                                         offset,
1973                                         dst_size);
1974     if (bytes_written < 0)
1975         return AVERROR_BUFFER_TOO_SMALL;
1976
1977     bytes_written += header_bytes;
1978     return bytes_written;
1979 }
1980
1981 /**
1982  * Copies NAL units and replaces length codes with
1983  * H.264 Annex B start codes. On failure, the contents of
1984  * dst_data may have been modified.
1985  *
1986  * @param length_code_size Byte length of each length code
1987  * @param sample_buffer NAL units prefixed with length codes.
1988  * @param sei Optional A53 closed captions SEI data.
1989  * @param dst_data Must be zeroed before calling this function.
1990  *                 Contains the copied NAL units prefixed with
1991  *                 start codes when the function returns
1992  *                 successfully.
1993  * @param dst_size Length of dst_data
1994  * @return 0 on success
1995  *         AVERROR_INVALIDDATA if length_code_size is invalid
1996  *         AVERROR_BUFFER_TOO_SMALL if dst_data is too small
1997  *         or if a length_code in src_data specifies data beyond
1998  *         the end of its buffer.
1999  */
2000 static int copy_replace_length_codes(
2001     AVCodecContext *avctx,
2002     size_t        length_code_size,
2003     CMSampleBufferRef sample_buffer,
2004     ExtraSEI      *sei,
2005     uint8_t       *dst_data,
2006     size_t        dst_size)
2007 {
2008     size_t src_size = CMSampleBufferGetTotalSampleSize(sample_buffer);
2009     size_t remaining_src_size = src_size;
2010     size_t remaining_dst_size = dst_size;
2011     size_t src_offset = 0;
2012     int wrote_sei = 0;
2013     int status;
2014     uint8_t size_buf[4];
2015     uint8_t nal_type;
2016     CMBlockBufferRef block = CMSampleBufferGetDataBuffer(sample_buffer);
2017
2018     if (length_code_size > 4) {
2019         return AVERROR_INVALIDDATA;
2020     }
2021
2022     while (remaining_src_size > 0) {
2023         size_t curr_src_len;
2024         size_t curr_dst_len;
2025         size_t box_len = 0;
2026         size_t i;
2027
2028         uint8_t       *dst_box;
2029
2030         status = CMBlockBufferCopyDataBytes(block,
2031                                             src_offset,
2032                                             length_code_size,
2033                                             size_buf);
2034         if (status) {
2035             av_log(avctx, AV_LOG_ERROR, "Cannot copy length: %d\n", status);
2036             return AVERROR_EXTERNAL;
2037         }
2038
2039         status = CMBlockBufferCopyDataBytes(block,
2040                                             src_offset + length_code_size,
2041                                             1,
2042                                             &nal_type);
2043
2044         if (status) {
2045             av_log(avctx, AV_LOG_ERROR, "Cannot copy type: %d\n", status);
2046             return AVERROR_EXTERNAL;
2047         }
2048
2049         nal_type &= 0x1F;
2050
2051         for (i = 0; i < length_code_size; i++) {
2052             box_len <<= 8;
2053             box_len |= size_buf[i];
2054         }
2055
2056         if (sei && !wrote_sei && is_post_sei_nal_type(nal_type)) {
2057             //No SEI NAL unit - insert.
2058             int wrote_bytes;
2059
2060             memcpy(dst_data, start_code, sizeof(start_code));
2061             dst_data += sizeof(start_code);
2062             remaining_dst_size -= sizeof(start_code);
2063
2064             *dst_data = H264_NAL_SEI;
2065             dst_data++;
2066             remaining_dst_size--;
2067
2068             wrote_bytes = write_sei(sei,
2069                                     SEI_TYPE_USER_DATA_REGISTERED_ITU_T_T35,
2070                                     dst_data,
2071                                     remaining_dst_size);
2072
2073             if (wrote_bytes < 0)
2074                 return wrote_bytes;
2075
2076             remaining_dst_size -= wrote_bytes;
2077             dst_data += wrote_bytes;
2078
2079             if (remaining_dst_size <= 0)
2080                 return AVERROR_BUFFER_TOO_SMALL;
2081
2082             *dst_data = 0x80;
2083
2084             dst_data++;
2085             remaining_dst_size--;
2086
2087             wrote_sei = 1;
2088         }
2089
2090         curr_src_len = box_len + length_code_size;
2091         curr_dst_len = box_len + sizeof(start_code);
2092
2093         if (remaining_src_size < curr_src_len) {
2094             return AVERROR_BUFFER_TOO_SMALL;
2095         }
2096
2097         if (remaining_dst_size < curr_dst_len) {
2098             return AVERROR_BUFFER_TOO_SMALL;
2099         }
2100
2101         dst_box = dst_data + sizeof(start_code);
2102
2103         memcpy(dst_data, start_code, sizeof(start_code));
2104         status = CMBlockBufferCopyDataBytes(block,
2105                                             src_offset + length_code_size,
2106                                             box_len,
2107                                             dst_box);
2108
2109         if (status) {
2110             av_log(avctx, AV_LOG_ERROR, "Cannot copy data: %d\n", status);
2111             return AVERROR_EXTERNAL;
2112         }
2113
2114         if (sei && !wrote_sei && nal_type == H264_NAL_SEI) {
2115             //Found SEI NAL unit - append.
2116             int wrote_bytes;
2117             int old_sei_length;
2118             int extra_bytes;
2119             uint8_t *new_sei;
2120             old_sei_length = find_sei_end(avctx, dst_box, box_len, &new_sei);
2121             if (old_sei_length < 0)
2122                 return status;
2123
2124             wrote_bytes = write_sei(sei,
2125                                     SEI_TYPE_USER_DATA_REGISTERED_ITU_T_T35,
2126                                     new_sei,
2127                                     remaining_dst_size - old_sei_length);
2128             if (wrote_bytes < 0)
2129                 return wrote_bytes;
2130
2131             if (new_sei + wrote_bytes >= dst_data + remaining_dst_size)
2132                 return AVERROR_BUFFER_TOO_SMALL;
2133
2134             new_sei[wrote_bytes++] = 0x80;
2135             extra_bytes = wrote_bytes - (dst_box + box_len - new_sei);
2136
2137             dst_data += extra_bytes;
2138             remaining_dst_size -= extra_bytes;
2139
2140             wrote_sei = 1;
2141         }
2142
2143         src_offset += curr_src_len;
2144         dst_data += curr_dst_len;
2145
2146         remaining_src_size -= curr_src_len;
2147         remaining_dst_size -= curr_dst_len;
2148     }
2149
2150     return 0;
2151 }
2152
2153 /**
2154  * Returns a sufficient number of bytes to contain the sei data.
2155  * It may be greater than the minimum required.
2156  */
2157 static int get_sei_msg_bytes(const ExtraSEI* sei, int type){
2158     int copied_size;
2159     if (sei->size == 0)
2160         return 0;
2161
2162     copied_size = -copy_emulation_prev(sei->data,
2163                                        sei->size,
2164                                        NULL,
2165                                        0,
2166                                        0);
2167
2168     if ((sei->size % 255) == 0) //may result in an extra byte
2169         copied_size++;
2170
2171     return copied_size + sei->size / 255 + 1 + type / 255 + 1;
2172 }
2173
2174 static int vtenc_cm_to_avpacket(
2175     AVCodecContext    *avctx,
2176     CMSampleBufferRef sample_buffer,
2177     AVPacket          *pkt,
2178     ExtraSEI          *sei)
2179 {
2180     VTEncContext *vtctx = avctx->priv_data;
2181
2182     int     status;
2183     bool    is_key_frame;
2184     bool    add_header;
2185     size_t  length_code_size;
2186     size_t  header_size = 0;
2187     size_t  in_buf_size;
2188     size_t  out_buf_size;
2189     size_t  sei_nalu_size = 0;
2190     int64_t dts_delta;
2191     int64_t time_base_num;
2192     int nalu_count;
2193     CMTime  pts;
2194     CMTime  dts;
2195     CMVideoFormatDescriptionRef vid_fmt;
2196
2197     vtenc_get_frame_info(sample_buffer, &is_key_frame);
2198
2199     if (vtctx->get_param_set_func) {
2200         status = get_length_code_size(avctx, sample_buffer, &length_code_size);
2201         if (status) return status;
2202
2203         add_header = is_key_frame && !(avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER);
2204
2205         if (add_header) {
2206             vid_fmt = CMSampleBufferGetFormatDescription(sample_buffer);
2207             if (!vid_fmt) {
2208                 av_log(avctx, AV_LOG_ERROR, "Cannot get format description.\n");
2209                 return AVERROR_EXTERNAL;
2210             }
2211
2212             status = get_params_size(avctx, vid_fmt, &header_size);
2213             if (status) return status;
2214         }
2215
2216         status = count_nalus(length_code_size, sample_buffer, &nalu_count);
2217         if(status)
2218             return status;
2219
2220         if (sei) {
2221             size_t msg_size = get_sei_msg_bytes(sei,
2222                                                 SEI_TYPE_USER_DATA_REGISTERED_ITU_T_T35);
2223
2224             sei_nalu_size = sizeof(start_code) + 1 + msg_size + 1;
2225         }
2226
2227         in_buf_size = CMSampleBufferGetTotalSampleSize(sample_buffer);
2228         out_buf_size = header_size +
2229                        in_buf_size +
2230                        sei_nalu_size +
2231                        nalu_count * ((int)sizeof(start_code) - (int)length_code_size);
2232
2233         status = ff_get_encode_buffer(avctx, pkt, out_buf_size, 0);
2234         if (status < 0)
2235             return status;
2236
2237         if (add_header) {
2238             status = copy_param_sets(avctx, vid_fmt, pkt->data, out_buf_size);
2239             if(status) return status;
2240         }
2241
2242         status = copy_replace_length_codes(
2243             avctx,
2244             length_code_size,
2245             sample_buffer,
2246             sei,
2247             pkt->data + header_size,
2248             pkt->size - header_size
2249         );
2250
2251         if (status) {
2252             av_log(avctx, AV_LOG_ERROR, "Error copying packet data: %d\n", status);
2253             return status;
2254         }
2255     } else {
2256         size_t len;
2257         CMBlockBufferRef buf = CMSampleBufferGetDataBuffer(sample_buffer);
2258         if (!buf) {
2259             av_log(avctx, AV_LOG_ERROR, "Error getting block buffer\n");
2260             return AVERROR_EXTERNAL;
2261         }
2262
2263         len = CMBlockBufferGetDataLength(buf);
2264
2265         status = ff_get_encode_buffer(avctx, pkt, len, 0);
2266         if (status < 0)
2267             return status;
2268
2269         status = CMBlockBufferCopyDataBytes(buf, 0, len, pkt->data);
2270         if (status) {
2271             av_log(avctx, AV_LOG_ERROR, "Error copying packet data: %d\n", status);
2272             return AVERROR_EXTERNAL;
2273         }
2274     }
2275
2276     if (is_key_frame) {
2277         pkt->flags |= AV_PKT_FLAG_KEY;
2278     }
2279
2280     pts = CMSampleBufferGetPresentationTimeStamp(sample_buffer);
2281     dts = CMSampleBufferGetDecodeTimeStamp      (sample_buffer);
2282
2283     if (CMTIME_IS_INVALID(dts)) {
2284         if (!vtctx->has_b_frames) {
2285             dts = pts;
2286         } else {
2287             av_log(avctx, AV_LOG_ERROR, "DTS is invalid.\n");
2288             return AVERROR_EXTERNAL;
2289         }
2290     }
2291
2292     dts_delta = vtctx->dts_delta >= 0 ? vtctx->dts_delta : 0;
2293     time_base_num = avctx->time_base.num;
2294     pkt->pts = pts.value / time_base_num;
2295     pkt->dts = dts.value / time_base_num - dts_delta;
2296
2297     return 0;
2298 }
2299
2300 /*
2301  * contiguous_buf_size is 0 if not contiguous, and the size of the buffer
2302  * containing all planes if so.
2303  */
2304 static int get_cv_pixel_info(
2305     AVCodecContext *avctx,
2306     const AVFrame  *frame,
2307     int            *color,
2308     int            *plane_count,
2309     size_t         *widths,
2310     size_t         *heights,
2311     size_t         *strides,
2312     size_t         *contiguous_buf_size)
2313 {
2314     const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt);
2315     VTEncContext *vtctx = avctx->priv_data;
2316     int av_format       = frame->format;
2317     int av_color_range  = avctx->color_range;
2318     int i;
2319     int range_guessed;
2320     int status;
2321
2322     if (!desc)
2323         return AVERROR(EINVAL);
2324
2325     status = get_cv_pixel_format(avctx, av_format, av_color_range, color, &range_guessed);
2326     if (status)
2327         return status;
2328
2329     if (range_guessed) {
2330         if (!vtctx->warned_color_range) {
2331             vtctx->warned_color_range = true;
2332             av_log(avctx,
2333                    AV_LOG_WARNING,
2334                    "Color range not set for %s. Using MPEG range.\n",
2335                    av_get_pix_fmt_name(av_format));
2336         }
2337     }
2338
2339     *plane_count = av_pix_fmt_count_planes(avctx->pix_fmt);
2340
2341     for (i = 0; i < desc->nb_components; i++) {
2342         int p = desc->comp[i].plane;
2343         bool hasAlpha = (desc->flags & AV_PIX_FMT_FLAG_ALPHA);
2344         bool isAlpha = hasAlpha && (p + 1 == *plane_count);
2345         bool isChroma = (p != 0) && !isAlpha;
2346         int shiftw = isChroma ? desc->log2_chroma_w : 0;
2347         int shifth = isChroma ? desc->log2_chroma_h : 0;
2348         widths[p]  = (avctx->width  + ((1 << shiftw) >> 1)) >> shiftw;
2349         heights[p] = (avctx->height + ((1 << shifth) >> 1)) >> shifth;
2350         strides[p] = frame->linesize[p];
2351     }
2352
2353     *contiguous_buf_size = 0;
2354     for (i = 0; i < *plane_count; i++) {
2355         if (i < *plane_count - 1 &&
2356             frame->data[i] + strides[i] * heights[i] != frame->data[i + 1]) {
2357             *contiguous_buf_size = 0;
2358             break;
2359         }
2360
2361         *contiguous_buf_size += strides[i] * heights[i];
2362     }
2363
2364     return 0;
2365 }
2366
2367 //Not used on OSX - frame is never copied.
2368 static int copy_avframe_to_pixel_buffer(AVCodecContext   *avctx,
2369                                         const AVFrame    *frame,
2370                                         CVPixelBufferRef cv_img,
2371                                         const size_t     *plane_strides,
2372                                         const size_t     *plane_rows)
2373 {
2374     int i, j;
2375     size_t plane_count;
2376     int status;
2377     int rows;
2378     int src_stride;
2379     int dst_stride;
2380     uint8_t *src_addr;
2381     uint8_t *dst_addr;
2382     size_t copy_bytes;
2383
2384     status = CVPixelBufferLockBaseAddress(cv_img, 0);
2385     if (status) {
2386         av_log(
2387             avctx,
2388             AV_LOG_ERROR,
2389             "Error: Could not lock base address of CVPixelBuffer: %d.\n",
2390             status
2391         );
2392     }
2393
2394     if (CVPixelBufferIsPlanar(cv_img)) {
2395         plane_count = CVPixelBufferGetPlaneCount(cv_img);
2396         for (i = 0; frame->data[i]; i++) {
2397             if (i == plane_count) {
2398                 CVPixelBufferUnlockBaseAddress(cv_img, 0);
2399                 av_log(avctx,
2400                     AV_LOG_ERROR,
2401                     "Error: different number of planes in AVFrame and CVPixelBuffer.\n"
2402                 );
2403
2404                 return AVERROR_EXTERNAL;
2405             }
2406
2407             dst_addr = (uint8_t*)CVPixelBufferGetBaseAddressOfPlane(cv_img, i);
2408             src_addr = (uint8_t*)frame->data[i];
2409             dst_stride = CVPixelBufferGetBytesPerRowOfPlane(cv_img, i);
2410             src_stride = plane_strides[i];
2411             rows = plane_rows[i];
2412
2413             if (dst_stride == src_stride) {
2414                 memcpy(dst_addr, src_addr, src_stride * rows);
2415             } else {
2416                 copy_bytes = dst_stride < src_stride ? dst_stride : src_stride;
2417
2418                 for (j = 0; j < rows; j++) {
2419                     memcpy(dst_addr + j * dst_stride, src_addr + j * src_stride, copy_bytes);
2420                 }
2421             }
2422         }
2423     } else {
2424         if (frame->data[1]) {
2425             CVPixelBufferUnlockBaseAddress(cv_img, 0);
2426             av_log(avctx,
2427                 AV_LOG_ERROR,
2428                 "Error: different number of planes in AVFrame and non-planar CVPixelBuffer.\n"
2429             );
2430
2431             return AVERROR_EXTERNAL;
2432         }
2433
2434         dst_addr = (uint8_t*)CVPixelBufferGetBaseAddress(cv_img);
2435         src_addr = (uint8_t*)frame->data[0];
2436         dst_stride = CVPixelBufferGetBytesPerRow(cv_img);
2437         src_stride = plane_strides[0];
2438         rows = plane_rows[0];
2439
2440         if (dst_stride == src_stride) {
2441             memcpy(dst_addr, src_addr, src_stride * rows);
2442         } else {
2443             copy_bytes = dst_stride < src_stride ? dst_stride : src_stride;
2444
2445             for (j = 0; j < rows; j++) {
2446                 memcpy(dst_addr + j * dst_stride, src_addr + j * src_stride, copy_bytes);
2447             }
2448         }
2449     }
2450
2451     status = CVPixelBufferUnlockBaseAddress(cv_img, 0);
2452     if (status) {
2453         av_log(avctx, AV_LOG_ERROR, "Error: Could not unlock CVPixelBuffer base address: %d.\n", status);
2454         return AVERROR_EXTERNAL;
2455     }
2456
2457     return 0;
2458 }
2459
2460 static int create_cv_pixel_buffer(AVCodecContext   *avctx,
2461                                   const AVFrame    *frame,
2462                                   CVPixelBufferRef *cv_img,
2463                                   BufNode          *node)
2464 {
2465     int plane_count;
2466     int color;
2467     size_t widths [AV_NUM_DATA_POINTERS];
2468     size_t heights[AV_NUM_DATA_POINTERS];
2469     size_t strides[AV_NUM_DATA_POINTERS];
2470     int status;
2471     size_t contiguous_buf_size;
2472     CVPixelBufferPoolRef pix_buf_pool;
2473     VTEncContext* vtctx = avctx->priv_data;
2474
2475     if (avctx->pix_fmt == AV_PIX_FMT_VIDEOTOOLBOX) {
2476         av_assert0(frame->format == AV_PIX_FMT_VIDEOTOOLBOX);
2477
2478         *cv_img = (CVPixelBufferRef)frame->data[3];
2479         av_assert0(*cv_img);
2480
2481         CFRetain(*cv_img);
2482         if (frame->buf[0]) {
2483             node->frame_buf = av_buffer_ref(frame->buf[0]);
2484             if (!node->frame_buf)
2485                 return AVERROR(ENOMEM);
2486         }
2487
2488         return 0;
2489     }
2490
2491     memset(widths,  0, sizeof(widths));
2492     memset(heights, 0, sizeof(heights));
2493     memset(strides, 0, sizeof(strides));
2494
2495     status = get_cv_pixel_info(
2496         avctx,
2497         frame,
2498         &color,
2499         &plane_count,
2500         widths,
2501         heights,
2502         strides,
2503         &contiguous_buf_size
2504     );
2505
2506     if (status) {
2507         av_log(
2508             avctx,
2509             AV_LOG_ERROR,
2510             "Error: Cannot convert format %d color_range %d: %d\n",
2511             frame->format,
2512             frame->color_range,
2513             status
2514         );
2515
2516         return status;
2517     }
2518
2519     pix_buf_pool = VTCompressionSessionGetPixelBufferPool(vtctx->session);
2520     if (!pix_buf_pool) {
2521         /* On iOS, the VT session is invalidated when the APP switches from
2522          * foreground to background and vice versa. Fetch the actual error code
2523          * of the VT session to detect that case and restart the VT session
2524          * accordingly. */
2525         OSStatus vtstatus;
2526
2527         vtstatus = VTCompressionSessionPrepareToEncodeFrames(vtctx->session);
2528         if (vtstatus == kVTInvalidSessionErr) {
2529             vtenc_reset(vtctx);
2530
2531             status = vtenc_configure_encoder(avctx);
2532             if (status == 0)
2533                 pix_buf_pool = VTCompressionSessionGetPixelBufferPool(vtctx->session);
2534         }
2535         if (!pix_buf_pool) {
2536             av_log(avctx, AV_LOG_ERROR, "Could not get pixel buffer pool.\n");
2537             return AVERROR_EXTERNAL;
2538         }
2539         else
2540             av_log(avctx, AV_LOG_WARNING, "VT session restarted because of a "
2541                    "kVTInvalidSessionErr error.\n");
2542     }
2543
2544     status = CVPixelBufferPoolCreatePixelBuffer(NULL,
2545                                                 pix_buf_pool,
2546                                                 cv_img);
2547
2548
2549     if (status) {
2550         av_log(avctx, AV_LOG_ERROR, "Could not create pixel buffer from pool: %d.\n", status);
2551         return AVERROR_EXTERNAL;
2552     }
2553
2554     status = copy_avframe_to_pixel_buffer(avctx, frame, *cv_img, strides, heights);
2555     if (status) {
2556         CFRelease(*cv_img);
2557         *cv_img = NULL;
2558         return status;
2559     }
2560
2561     return 0;
2562 }
2563
2564 static int create_encoder_dict_h264(const AVFrame *frame,
2565                                     CFDictionaryRef* dict_out)
2566 {
2567     CFDictionaryRef dict = NULL;
2568     if (frame->pict_type == AV_PICTURE_TYPE_I) {
2569         const void *keys[] = { kVTEncodeFrameOptionKey_ForceKeyFrame };
2570         const void *vals[] = { kCFBooleanTrue };
2571
2572         dict = CFDictionaryCreate(NULL, keys, vals, 1, NULL, NULL);
2573         if(!dict) return AVERROR(ENOMEM);
2574     }
2575
2576     *dict_out = dict;
2577     return 0;
2578 }
2579
2580 static int vtenc_send_frame(AVCodecContext *avctx,
2581                             VTEncContext   *vtctx,
2582                             const AVFrame  *frame)
2583 {
2584     CMTime time;
2585     CFDictionaryRef frame_dict = NULL;
2586     CVPixelBufferRef cv_img = NULL;
2587     AVFrameSideData *side_data = NULL;
2588     BufNode *node = av_mallocz(sizeof(*node));
2589     int status;
2590
2591     if (!node)
2592         return AVERROR(ENOMEM);
2593
2594     status = create_cv_pixel_buffer(avctx, frame, &cv_img, node);
2595     if (status)
2596         goto out;
2597
2598     status = create_encoder_dict_h264(frame, &frame_dict);
2599     if (status)
2600         goto out;
2601
2602 #if CONFIG_ATSC_A53
2603     side_data = av_frame_get_side_data(frame, AV_FRAME_DATA_A53_CC);
2604     if (vtctx->a53_cc && side_data && side_data->size) {
2605         status = ff_alloc_a53_sei(frame, 0, &node->sei.data, &node->sei.size);
2606         if (status < 0) {
2607             goto out;
2608         }
2609     }
2610 #endif
2611
2612     time = CMTimeMake(frame->pts * avctx->time_base.num, avctx->time_base.den);
2613     status = VTCompressionSessionEncodeFrame(
2614         vtctx->session,
2615         cv_img,
2616         time,
2617         kCMTimeInvalid,
2618         frame_dict,
2619         node,
2620         NULL
2621     );
2622
2623     if (status) {
2624         av_log(avctx, AV_LOG_ERROR, "Error: cannot encode frame: %d\n", status);
2625         status = AVERROR_EXTERNAL;
2626         // Not necessary, just in case new code put after here
2627         goto out;
2628     }
2629
2630 out:
2631     if (frame_dict)
2632         CFRelease(frame_dict);
2633     if (cv_img)
2634         CFRelease(cv_img);
2635     if (status)
2636         vtenc_free_buf_node(node);
2637
2638     return status;
2639 }
2640
2641 static av_cold int vtenc_frame(
2642     AVCodecContext *avctx,
2643     AVPacket       *pkt,
2644     const AVFrame  *frame,
2645     int            *got_packet)
2646 {
2647     VTEncContext *vtctx = avctx->priv_data;
2648     bool get_frame;
2649     int status;
2650     CMSampleBufferRef buf = NULL;
2651     ExtraSEI sei = {0};
2652
2653     if (frame) {
2654         status = vtenc_send_frame(avctx, vtctx, frame);
2655
2656         if (status) {
2657             status = AVERROR_EXTERNAL;
2658             goto end_nopkt;
2659         }
2660
2661         if (vtctx->frame_ct_in == 0) {
2662             vtctx->first_pts = frame->pts;
2663         } else if(vtctx->frame_ct_in == vtctx->has_b_frames) {
2664             vtctx->dts_delta = frame->pts - vtctx->first_pts;
2665         }
2666
2667         vtctx->frame_ct_in++;
2668     } else if(!vtctx->flushing) {
2669         vtctx->flushing = true;
2670
2671         status = VTCompressionSessionCompleteFrames(vtctx->session,
2672                                                     kCMTimeIndefinite);
2673
2674         if (status) {
2675             av_log(avctx, AV_LOG_ERROR, "Error flushing frames: %d\n", status);
2676             status = AVERROR_EXTERNAL;
2677             goto end_nopkt;
2678         }
2679     }
2680
2681     *got_packet = 0;
2682     get_frame = vtctx->dts_delta >= 0 || !frame;
2683     if (!get_frame) {
2684         status = 0;
2685         goto end_nopkt;
2686     }
2687
2688     status = vtenc_q_pop(vtctx, !frame, &buf, &sei);
2689     if (status) goto end_nopkt;
2690     if (!buf)   goto end_nopkt;
2691
2692     status = vtenc_cm_to_avpacket(avctx, buf, pkt, sei.data ? &sei : NULL);
2693     av_free(sei.data);
2694     CFRelease(buf);
2695     if (status) goto end_nopkt;
2696
2697     *got_packet = 1;
2698     return 0;
2699
2700 end_nopkt:
2701     av_packet_unref(pkt);
2702     return status;
2703 }
2704
2705 static int vtenc_populate_extradata(AVCodecContext   *avctx,
2706                                     CMVideoCodecType codec_type,
2707                                     CFStringRef      profile_level,
2708                                     CFNumberRef      gamma_level,
2709                                     CFDictionaryRef  enc_info,
2710                                     CFDictionaryRef  pixel_buffer_info)
2711 {
2712     VTEncContext *vtctx = avctx->priv_data;
2713     int status;
2714     CVPixelBufferPoolRef pool = NULL;
2715     CVPixelBufferRef pix_buf = NULL;
2716     CMTime time;
2717     CMSampleBufferRef buf = NULL;
2718     BufNode *node = av_mallocz(sizeof(*node));
2719
2720     if (!node)
2721         return AVERROR(ENOMEM);
2722
2723     status = vtenc_create_encoder(avctx,
2724                                   codec_type,
2725                                   profile_level,
2726                                   gamma_level,
2727                                   enc_info,
2728                                   pixel_buffer_info,
2729                                   vtctx->constant_bit_rate,
2730                                   &vtctx->session);
2731     if (status)
2732         goto pe_cleanup;
2733
2734     pool = VTCompressionSessionGetPixelBufferPool(vtctx->session);
2735     if(!pool){
2736         av_log(avctx, AV_LOG_ERROR, "Error getting pixel buffer pool.\n");
2737         status = AVERROR_EXTERNAL;
2738         goto pe_cleanup;
2739     }
2740
2741     status = CVPixelBufferPoolCreatePixelBuffer(NULL,
2742                                                 pool,
2743                                                 &pix_buf);
2744
2745     if(status != kCVReturnSuccess){
2746         av_log(avctx, AV_LOG_ERROR, "Error creating frame from pool: %d\n", status);
2747         status = AVERROR_EXTERNAL;
2748         goto pe_cleanup;
2749     }
2750
2751     time = CMTimeMake(0, avctx->time_base.den);
2752     status = VTCompressionSessionEncodeFrame(vtctx->session,
2753                                              pix_buf,
2754                                              time,
2755                                              kCMTimeInvalid,
2756                                              NULL,
2757                                              node,
2758                                              NULL);
2759
2760     if (status) {
2761         av_log(avctx,
2762                AV_LOG_ERROR,
2763                "Error sending frame for extradata: %d\n",
2764                status);
2765         status = AVERROR_EXTERNAL;
2766         goto pe_cleanup;
2767     }
2768     node = NULL;
2769
2770     //Populates extradata - output frames are flushed and param sets are available.
2771     status = VTCompressionSessionCompleteFrames(vtctx->session,
2772                                                 kCMTimeIndefinite);
2773
2774     if (status) {
2775         status = AVERROR_EXTERNAL;
2776         goto pe_cleanup;
2777     }
2778
2779     status = vtenc_q_pop(vtctx, 0, &buf, NULL);
2780     if (status) {
2781         av_log(avctx, AV_LOG_ERROR, "popping: %d\n", status);
2782         goto pe_cleanup;
2783     }
2784
2785     CFRelease(buf);
2786
2787
2788
2789 pe_cleanup:
2790     CVPixelBufferRelease(pix_buf);
2791
2792     if (status) {
2793         vtenc_reset(vtctx);
2794     } else if (vtctx->session) {
2795         CFRelease(vtctx->session);
2796         vtctx->session = NULL;
2797     }
2798
2799     vtctx->frame_ct_out = 0;
2800
2801     av_assert0(status != 0 || (avctx->extradata && avctx->extradata_size > 0));
2802     if (!status)
2803         vtenc_free_buf_node(node);
2804
2805     return status;
2806 }
2807
2808 static av_cold int vtenc_close(AVCodecContext *avctx)
2809 {
2810     VTEncContext *vtctx = avctx->priv_data;
2811
2812     if(!vtctx->session) {
2813         pthread_cond_destroy(&vtctx->cv_sample_sent);
2814         pthread_mutex_destroy(&vtctx->lock);
2815         return 0;
2816     }
2817
2818     VTCompressionSessionCompleteFrames(vtctx->session,
2819                                        kCMTimeIndefinite);
2820     clear_frame_queue(vtctx);
2821     pthread_cond_destroy(&vtctx->cv_sample_sent);
2822     pthread_mutex_destroy(&vtctx->lock);
2823
2824     vtenc_reset(vtctx);
2825
2826     return 0;
2827 }
2828
2829 static const enum AVPixelFormat avc_pix_fmts[] = {
2830     AV_PIX_FMT_VIDEOTOOLBOX,
2831     AV_PIX_FMT_NV12,
2832     AV_PIX_FMT_YUV420P,
2833     AV_PIX_FMT_NONE
2834 };
2835
2836 static const enum AVPixelFormat hevc_pix_fmts[] = {
2837     AV_PIX_FMT_VIDEOTOOLBOX,
2838     AV_PIX_FMT_NV12,
2839     AV_PIX_FMT_YUV420P,
2840     AV_PIX_FMT_BGRA,
2841     AV_PIX_FMT_P010LE,
2842     AV_PIX_FMT_NONE
2843 };
2844
2845 static const enum AVPixelFormat prores_pix_fmts[] = {
2846     AV_PIX_FMT_VIDEOTOOLBOX,
2847     AV_PIX_FMT_YUV420P,
2848 #ifdef kCFCoreFoundationVersionNumber10_7
2849     AV_PIX_FMT_NV12,
2850     AV_PIX_FMT_AYUV64,
2851 #endif
2852     AV_PIX_FMT_UYVY422,
2853 #if HAVE_KCVPIXELFORMATTYPE_420YPCBCR10BIPLANARVIDEORANGE
2854     AV_PIX_FMT_P010,
2855 #endif
2856 #if HAVE_KCVPIXELFORMATTYPE_422YPCBCR8BIPLANARVIDEORANGE
2857     AV_PIX_FMT_NV16,
2858 #endif
2859 #if HAVE_KCVPIXELFORMATTYPE_422YPCBCR10BIPLANARVIDEORANGE
2860     AV_PIX_FMT_P210,
2861 #endif
2862 #if HAVE_KCVPIXELFORMATTYPE_422YPCBCR16BIPLANARVIDEORANGE
2863     AV_PIX_FMT_P216,
2864 #endif
2865 #if HAVE_KCVPIXELFORMATTYPE_444YPCBCR8BIPLANARVIDEORANGE
2866     AV_PIX_FMT_NV24,
2867 #endif
2868 #if HAVE_KCVPIXELFORMATTYPE_444YPCBCR10BIPLANARVIDEORANGE
2869     AV_PIX_FMT_P410,
2870 #endif
2871 #if HAVE_KCVPIXELFORMATTYPE_444YPCBCR16BIPLANARVIDEORANGE
2872     AV_PIX_FMT_P416,
2873 #endif
2874     AV_PIX_FMT_BGRA,
2875     AV_PIX_FMT_NONE
2876 };
2877
2878 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
2879 #define COMMON_OPTIONS \
2880     { "allow_sw", "Allow software encoding", OFFSET(allow_sw), AV_OPT_TYPE_BOOL, \
2881         { .i64 = 0 }, 0, 1, VE }, \
2882     { "require_sw", "Require software encoding", OFFSET(require_sw), AV_OPT_TYPE_BOOL, \
2883         { .i64 = 0 }, 0, 1, VE }, \
2884     { "realtime", "Hint that encoding should happen in real-time if not faster (e.g. capturing from camera).", \
2885         OFFSET(realtime), AV_OPT_TYPE_BOOL, { .i64 = 0 }, -1, 1, VE }, \
2886     { "frames_before", "Other frames will come before the frames in this session. This helps smooth concatenation issues.", \
2887         OFFSET(frames_before), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE }, \
2888     { "frames_after", "Other frames will come after the frames in this session. This helps smooth concatenation issues.", \
2889         OFFSET(frames_after), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE }, \
2890     { "prio_speed", "prioritize encoding speed", OFFSET(prio_speed), AV_OPT_TYPE_BOOL, \
2891         { .i64 = -1 }, -1, 1, VE }, \
2892     { "power_efficient", "Set to 1 to enable more power-efficient encoding if supported.", \
2893         OFFSET(power_efficient), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE }, \
2894     { "max_ref_frames", \
2895         "Sets the maximum number of reference frames. This only has an effect when the value is less than the maximum allowed by the profile/level.", \
2896         OFFSET(max_ref_frames), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, VE },
2897
2898 static const AVCodecHWConfigInternal *const vt_encode_hw_configs[] = {
2899         HW_CONFIG_ENCODER_FRAMES(VIDEOTOOLBOX, VIDEOTOOLBOX),
2900         NULL,
2901 };
2902
2903 #define OFFSET(x) offsetof(VTEncContext, x)
2904 static const AVOption h264_options[] = {
2905     { "profile", "Profile", OFFSET(profile), AV_OPT_TYPE_INT, { .i64 = AV_PROFILE_UNKNOWN }, AV_PROFILE_UNKNOWN, INT_MAX, VE, .unit = "profile" },
2906     { "baseline",             "Baseline Profile",             0, AV_OPT_TYPE_CONST, { .i64 = AV_PROFILE_H264_BASELINE             }, INT_MIN, INT_MAX, VE, .unit = "profile" },
2907     { "constrained_baseline", "Constrained Baseline Profile", 0, AV_OPT_TYPE_CONST, { .i64 = AV_PROFILE_H264_CONSTRAINED_BASELINE }, INT_MIN, INT_MAX, VE, .unit = "profile" },
2908     { "main",                 "Main Profile",                 0, AV_OPT_TYPE_CONST, { .i64 = AV_PROFILE_H264_MAIN                 }, INT_MIN, INT_MAX, VE, .unit = "profile" },
2909     { "high",                 "High Profile",                 0, AV_OPT_TYPE_CONST, { .i64 = AV_PROFILE_H264_HIGH                 }, INT_MIN, INT_MAX, VE, .unit = "profile" },
2910     { "constrained_high",     "Constrained High Profile",     0, AV_OPT_TYPE_CONST, { .i64 = H264_PROFILE_CONSTRAINED_HIGH        }, INT_MIN, INT_MAX, VE, .unit = "profile" },
2911     { "extended",             "Extend Profile",               0, AV_OPT_TYPE_CONST, { .i64 = AV_PROFILE_H264_EXTENDED             }, INT_MIN, INT_MAX, VE, .unit = "profile" },
2912
2913     { "level", "Level", OFFSET(level), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 52, VE, .unit = "level" },
2914     { "1.3", "Level 1.3, only available with Baseline Profile", 0, AV_OPT_TYPE_CONST, { .i64 = 13 }, INT_MIN, INT_MAX, VE, .unit = "level" },
2915     { "3.0", "Level 3.0", 0, AV_OPT_TYPE_CONST, { .i64 = 30 }, INT_MIN, INT_MAX, VE, .unit = "level" },
2916     { "3.1", "Level 3.1", 0, AV_OPT_TYPE_CONST, { .i64 = 31 }, INT_MIN, INT_MAX, VE, .unit = "level" },
2917     { "3.2", "Level 3.2", 0, AV_OPT_TYPE_CONST, { .i64 = 32 }, INT_MIN, INT_MAX, VE, .unit = "level" },
2918     { "4.0", "Level 4.0", 0, AV_OPT_TYPE_CONST, { .i64 = 40 }, INT_MIN, INT_MAX, VE, .unit = "level" },
2919     { "4.1", "Level 4.1", 0, AV_OPT_TYPE_CONST, { .i64 = 41 }, INT_MIN, INT_MAX, VE, .unit = "level" },
2920     { "4.2", "Level 4.2", 0, AV_OPT_TYPE_CONST, { .i64 = 42 }, INT_MIN, INT_MAX, VE, .unit = "level" },
2921     { "5.0", "Level 5.0", 0, AV_OPT_TYPE_CONST, { .i64 = 50 }, INT_MIN, INT_MAX, VE, .unit = "level" },
2922     { "5.1", "Level 5.1", 0, AV_OPT_TYPE_CONST, { .i64 = 51 }, INT_MIN, INT_MAX, VE, .unit = "level" },
2923     { "5.2", "Level 5.2", 0, AV_OPT_TYPE_CONST, { .i64 = 52 }, INT_MIN, INT_MAX, VE, .unit = "level" },
2924
2925     { "coder", "Entropy coding", OFFSET(entropy), AV_OPT_TYPE_INT, { .i64 = VT_ENTROPY_NOT_SET }, VT_ENTROPY_NOT_SET, VT_CABAC, VE, .unit = "coder" },
2926     { "cavlc", "CAVLC entropy coding", 0, AV_OPT_TYPE_CONST, { .i64 = VT_CAVLC }, INT_MIN, INT_MAX, VE, .unit = "coder" },
2927     { "vlc",   "CAVLC entropy coding", 0, AV_OPT_TYPE_CONST, { .i64 = VT_CAVLC }, INT_MIN, INT_MAX, VE, .unit = "coder" },
2928     { "cabac", "CABAC entropy coding", 0, AV_OPT_TYPE_CONST, { .i64 = VT_CABAC }, INT_MIN, INT_MAX, VE, .unit = "coder" },
2929     { "ac",    "CABAC entropy coding", 0, AV_OPT_TYPE_CONST, { .i64 = VT_CABAC }, INT_MIN, INT_MAX, VE, .unit = "coder" },
2930
2931     { "a53cc", "Use A53 Closed Captions (if available)", OFFSET(a53_cc), AV_OPT_TYPE_BOOL, {.i64 = 1}, 0, 1, VE },
2932
2933     { "constant_bit_rate", "Require constant bit rate (macOS 13 or newer)", OFFSET(constant_bit_rate), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE },
2934     { "max_slice_bytes", "Set the maximum number of bytes in an H.264 slice.", OFFSET(max_slice_bytes), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, VE },
2935     COMMON_OPTIONS
2936     { NULL },
2937 };
2938
2939 static const FFCodecDefault vt_defaults[] = {
2940         {"b",    "0"},
2941         {"qmin", "-1"},
2942         {"qmax", "-1"},
2943         {NULL},
2944 };
2945
2946 static const AVClass h264_videotoolbox_class = {
2947     .class_name = "h264_videotoolbox",
2948     .item_name  = av_default_item_name,
2949     .option     = h264_options,
2950     .version    = LIBAVUTIL_VERSION_INT,
2951 };
2952
2953 const FFCodec ff_h264_videotoolbox_encoder = {
2954     .p.name           = "h264_videotoolbox",
2955     CODEC_LONG_NAME("VideoToolbox H.264 Encoder"),
2956     .p.type           = AVMEDIA_TYPE_VIDEO,
2957     .p.id             = AV_CODEC_ID_H264,
2958     .p.capabilities   = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DELAY,
2959     .priv_data_size   = sizeof(VTEncContext),
2960     .p.pix_fmts       = avc_pix_fmts,
2961     .defaults         = vt_defaults,
2962     .init             = vtenc_init,
2963     FF_CODEC_ENCODE_CB(vtenc_frame),
2964     .close            = vtenc_close,
2965     .p.priv_class     = &h264_videotoolbox_class,
2966     .caps_internal    = FF_CODEC_CAP_INIT_CLEANUP,
2967     .hw_configs       = vt_encode_hw_configs,
2968 };
2969
2970 static const AVOption hevc_options[] = {
2971     { "profile", "Profile", OFFSET(profile), AV_OPT_TYPE_INT, { .i64 = AV_PROFILE_UNKNOWN }, AV_PROFILE_UNKNOWN, INT_MAX, VE, .unit = "profile" },
2972     { "main",     "Main Profile",     0, AV_OPT_TYPE_CONST, { .i64 = AV_PROFILE_HEVC_MAIN    }, INT_MIN, INT_MAX, VE, .unit = "profile" },
2973     { "main10",   "Main10 Profile",   0, AV_OPT_TYPE_CONST, { .i64 = AV_PROFILE_HEVC_MAIN_10 }, INT_MIN, INT_MAX, VE, .unit = "profile" },
2974
2975     { "alpha_quality", "Compression quality for the alpha channel", OFFSET(alpha_quality), AV_OPT_TYPE_DOUBLE, { .dbl = 0.0 }, 0.0, 1.0, VE },
2976
2977     { "constant_bit_rate", "Require constant bit rate (macOS 13 or newer)", OFFSET(constant_bit_rate), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE },
2978
2979     COMMON_OPTIONS
2980     { NULL },
2981 };
2982
2983 static const AVClass hevc_videotoolbox_class = {
2984     .class_name = "hevc_videotoolbox",
2985     .item_name  = av_default_item_name,
2986     .option     = hevc_options,
2987     .version    = LIBAVUTIL_VERSION_INT,
2988 };
2989
2990 const FFCodec ff_hevc_videotoolbox_encoder = {
2991     .p.name           = "hevc_videotoolbox",
2992     CODEC_LONG_NAME("VideoToolbox H.265 Encoder"),
2993     .p.type           = AVMEDIA_TYPE_VIDEO,
2994     .p.id             = AV_CODEC_ID_HEVC,
2995     .p.capabilities   = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DELAY |
2996                         AV_CODEC_CAP_HARDWARE,
2997     .priv_data_size   = sizeof(VTEncContext),
2998     .p.pix_fmts       = hevc_pix_fmts,
2999     .defaults         = vt_defaults,
3000     .color_ranges     = AVCOL_RANGE_MPEG | AVCOL_RANGE_JPEG,
3001     .init             = vtenc_init,
3002     FF_CODEC_ENCODE_CB(vtenc_frame),
3003     .close            = vtenc_close,
3004     .p.priv_class     = &hevc_videotoolbox_class,
3005     .caps_internal    = FF_CODEC_CAP_INIT_CLEANUP,
3006     .p.wrapper_name   = "videotoolbox",
3007     .hw_configs       = vt_encode_hw_configs,
3008 };
3009
3010 static const AVOption prores_options[] = {
3011     { "profile", "Profile", OFFSET(profile), AV_OPT_TYPE_INT, { .i64 = AV_PROFILE_UNKNOWN }, AV_PROFILE_UNKNOWN, AV_PROFILE_PRORES_XQ, VE, .unit = "profile" },
3012     { "auto",     "Automatically determine based on input format", 0, AV_OPT_TYPE_CONST, { .i64 = AV_PROFILE_UNKNOWN },            INT_MIN, INT_MAX, VE, .unit = "profile" },
3013     { "proxy",    "ProRes 422 Proxy",                              0, AV_OPT_TYPE_CONST, { .i64 = AV_PROFILE_PRORES_PROXY },       INT_MIN, INT_MAX, VE, .unit = "profile" },
3014     { "lt",       "ProRes 422 LT",                                 0, AV_OPT_TYPE_CONST, { .i64 = AV_PROFILE_PRORES_LT },          INT_MIN, INT_MAX, VE, .unit = "profile" },
3015     { "standard", "ProRes 422",                                    0, AV_OPT_TYPE_CONST, { .i64 = AV_PROFILE_PRORES_STANDARD },    INT_MIN, INT_MAX, VE, .unit = "profile" },
3016     { "hq",       "ProRes 422 HQ",                                 0, AV_OPT_TYPE_CONST, { .i64 = AV_PROFILE_PRORES_HQ },          INT_MIN, INT_MAX, VE, .unit = "profile" },
3017     { "4444",     "ProRes 4444",                                   0, AV_OPT_TYPE_CONST, { .i64 = AV_PROFILE_PRORES_4444 },        INT_MIN, INT_MAX, VE, .unit = "profile" },
3018     { "xq",       "ProRes 4444 XQ",                                0, AV_OPT_TYPE_CONST, { .i64 = AV_PROFILE_PRORES_XQ },          INT_MIN, INT_MAX, VE, .unit = "profile" },
3019
3020     COMMON_OPTIONS
3021     { NULL },
3022 };
3023
3024 static const AVClass prores_videotoolbox_class = {
3025     .class_name = "prores_videotoolbox",
3026     .item_name  = av_default_item_name,
3027     .option     = prores_options,
3028     .version    = LIBAVUTIL_VERSION_INT,
3029 };
3030
3031 const FFCodec ff_prores_videotoolbox_encoder = {
3032     .p.name           = "prores_videotoolbox",
3033     CODEC_LONG_NAME("VideoToolbox ProRes Encoder"),
3034     .p.type           = AVMEDIA_TYPE_VIDEO,
3035     .p.id             = AV_CODEC_ID_PRORES,
3036     .p.capabilities   = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DELAY |
3037                         AV_CODEC_CAP_HARDWARE,
3038     .priv_data_size   = sizeof(VTEncContext),
3039     .p.pix_fmts       = prores_pix_fmts,
3040     .defaults         = vt_defaults,
3041     .color_ranges     = AVCOL_RANGE_MPEG | AVCOL_RANGE_JPEG,
3042     .init             = vtenc_init,
3043     FF_CODEC_ENCODE_CB(vtenc_frame),
3044     .close            = vtenc_close,
3045     .p.priv_class     = &prores_videotoolbox_class,
3046     .caps_internal    = FF_CODEC_CAP_INIT_CLEANUP,
3047     .p.wrapper_name   = "videotoolbox",
3048     .hw_configs       = vt_encode_hw_configs,
3049 };