git.sesse.net Git - ffmpeg/blob - 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/opt.h"
  28 #include "libavutil/avassert.h"
  29 #include "libavutil/avstring.h"
  30 #include "libavcodec/avcodec.h"
  31 #include "libavutil/pixdesc.h"
  32 #include "internal.h"
  33 #include <pthread.h>
  34 #include "h264.h"
  35 #include "h264_sei.h"
  36 #include <dlfcn.h>
  37
  38 #if !HAVE_KCMVIDEOCODECTYPE_HEVC
  39 enum { kCMVideoCodecType_HEVC = 'hvc1' };
  40 #endif
  41
  42 #if !HAVE_KCVPIXELFORMATTYPE_420YPCBCR10BIPLANARVIDEORANGE
  43 enum { kCVPixelFormatType_420YpCbCr10BiPlanarFullRange = 'xf20' };
  44 enum { kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange = 'x420' };
  45 #endif
  46
  47 typedef OSStatus (*getParameterSetAtIndex)(CMFormatDescriptionRef videoDesc,
  48                                            size_t parameterSetIndex,
  49                                            const uint8_t **parameterSetPointerOut,
  50                                            size_t *parameterSetSizeOut,
  51                                            size_t *parameterSetCountOut,
  52                                            int *NALUnitHeaderLengthOut);
  53
  54 //These symbols may not be present
  55 static struct{
  56     CFStringRef kCVImageBufferColorPrimaries_ITU_R_2020;
  57     CFStringRef kCVImageBufferTransferFunction_ITU_R_2020;
  58     CFStringRef kCVImageBufferYCbCrMatrix_ITU_R_2020;
  59
  60     CFStringRef kVTCompressionPropertyKey_H264EntropyMode;
  61     CFStringRef kVTH264EntropyMode_CAVLC;
  62     CFStringRef kVTH264EntropyMode_CABAC;
  63
  64     CFStringRef kVTProfileLevel_H264_Baseline_4_0;
  65     CFStringRef kVTProfileLevel_H264_Baseline_4_2;
  66     CFStringRef kVTProfileLevel_H264_Baseline_5_0;
  67     CFStringRef kVTProfileLevel_H264_Baseline_5_1;
  68     CFStringRef kVTProfileLevel_H264_Baseline_5_2;
  69     CFStringRef kVTProfileLevel_H264_Baseline_AutoLevel;
  70     CFStringRef kVTProfileLevel_H264_Main_4_2;
  71     CFStringRef kVTProfileLevel_H264_Main_5_1;
  72     CFStringRef kVTProfileLevel_H264_Main_5_2;
  73     CFStringRef kVTProfileLevel_H264_Main_AutoLevel;
  74     CFStringRef kVTProfileLevel_H264_High_3_0;
  75     CFStringRef kVTProfileLevel_H264_High_3_1;
  76     CFStringRef kVTProfileLevel_H264_High_3_2;
  77     CFStringRef kVTProfileLevel_H264_High_4_0;
  78     CFStringRef kVTProfileLevel_H264_High_4_1;
  79     CFStringRef kVTProfileLevel_H264_High_4_2;
  80     CFStringRef kVTProfileLevel_H264_High_5_1;
  81     CFStringRef kVTProfileLevel_H264_High_5_2;
  82     CFStringRef kVTProfileLevel_H264_High_AutoLevel;
  83     CFStringRef kVTProfileLevel_H264_Extended_5_0;
  84     CFStringRef kVTProfileLevel_H264_Extended_AutoLevel;
  85
  86     CFStringRef kVTProfileLevel_HEVC_Main_AutoLevel;
  87     CFStringRef kVTProfileLevel_HEVC_Main10_AutoLevel;
  88
  89     CFStringRef kVTCompressionPropertyKey_RealTime;
  90
  91     CFStringRef kVTVideoEncoderSpecification_EnableHardwareAcceleratedVideoEncoder;
  92     CFStringRef kVTVideoEncoderSpecification_RequireHardwareAcceleratedVideoEncoder;
  93
  94     getParameterSetAtIndex CMVideoFormatDescriptionGetHEVCParameterSetAtIndex;
  95 } compat_keys;
  96
  97 #define GET_SYM(symbol, defaultVal)                                     \
  98 do{                                                                     \
  99     CFStringRef* handle = (CFStringRef*)dlsym(RTLD_DEFAULT, #symbol);   \
 100     if(!handle)                                                         \
 101         compat_keys.symbol = CFSTR(defaultVal);                         \
 102     else                                                                \
 103         compat_keys.symbol = *handle;                                   \
 104 }while(0)
 105
 106 static pthread_once_t once_ctrl = PTHREAD_ONCE_INIT;
 107
 108 static void loadVTEncSymbols(){
 109     compat_keys.CMVideoFormatDescriptionGetHEVCParameterSetAtIndex =
 110         (getParameterSetAtIndex)dlsym(
 111             RTLD_DEFAULT,
 112             "CMVideoFormatDescriptionGetHEVCParameterSetAtIndex"
 113         );
 114
 115     GET_SYM(kCVImageBufferColorPrimaries_ITU_R_2020,   "ITU_R_2020");
 116     GET_SYM(kCVImageBufferTransferFunction_ITU_R_2020, "ITU_R_2020");
 117     GET_SYM(kCVImageBufferYCbCrMatrix_ITU_R_2020,      "ITU_R_2020");
 118
 119     GET_SYM(kVTCompressionPropertyKey_H264EntropyMode, "H264EntropyMode");
 120     GET_SYM(kVTH264EntropyMode_CAVLC, "CAVLC");
 121     GET_SYM(kVTH264EntropyMode_CABAC, "CABAC");
 122
 123     GET_SYM(kVTProfileLevel_H264_Baseline_4_0,       "H264_Baseline_4_0");
 124     GET_SYM(kVTProfileLevel_H264_Baseline_4_2,       "H264_Baseline_4_2");
 125     GET_SYM(kVTProfileLevel_H264_Baseline_5_0,       "H264_Baseline_5_0");
 126     GET_SYM(kVTProfileLevel_H264_Baseline_5_1,       "H264_Baseline_5_1");
 127     GET_SYM(kVTProfileLevel_H264_Baseline_5_2,       "H264_Baseline_5_2");
 128     GET_SYM(kVTProfileLevel_H264_Baseline_AutoLevel, "H264_Baseline_AutoLevel");
 129     GET_SYM(kVTProfileLevel_H264_Main_4_2,           "H264_Main_4_2");
 130     GET_SYM(kVTProfileLevel_H264_Main_5_1,           "H264_Main_5_1");
 131     GET_SYM(kVTProfileLevel_H264_Main_5_2,           "H264_Main_5_2");
 132     GET_SYM(kVTProfileLevel_H264_Main_AutoLevel,     "H264_Main_AutoLevel");
 133     GET_SYM(kVTProfileLevel_H264_High_3_0,           "H264_High_3_0");
 134     GET_SYM(kVTProfileLevel_H264_High_3_1,           "H264_High_3_1");
 135     GET_SYM(kVTProfileLevel_H264_High_3_2,           "H264_High_3_2");
 136     GET_SYM(kVTProfileLevel_H264_High_4_0,           "H264_High_4_0");
 137     GET_SYM(kVTProfileLevel_H264_High_4_1,           "H264_High_4_1");
 138     GET_SYM(kVTProfileLevel_H264_High_4_2,           "H264_High_4_2");
 139     GET_SYM(kVTProfileLevel_H264_High_5_1,           "H264_High_5_1");
 140     GET_SYM(kVTProfileLevel_H264_High_5_2,           "H264_High_5_2");
 141     GET_SYM(kVTProfileLevel_H264_High_AutoLevel,     "H264_High_AutoLevel");
 142     GET_SYM(kVTProfileLevel_H264_Extended_5_0,       "H264_Extended_5_0");
 143     GET_SYM(kVTProfileLevel_H264_Extended_AutoLevel, "H264_Extended_AutoLevel");
 144
 145     GET_SYM(kVTProfileLevel_HEVC_Main_AutoLevel,     "HEVC_Main_AutoLevel");
 146     GET_SYM(kVTProfileLevel_HEVC_Main10_AutoLevel,   "HEVC_Main10_AutoLevel");
 147
 148     GET_SYM(kVTCompressionPropertyKey_RealTime, "RealTime");
 149
 150     GET_SYM(kVTVideoEncoderSpecification_EnableHardwareAcceleratedVideoEncoder,
 151             "EnableHardwareAcceleratedVideoEncoder");
 152     GET_SYM(kVTVideoEncoderSpecification_RequireHardwareAcceleratedVideoEncoder,
 153             "RequireHardwareAcceleratedVideoEncoder");
 154 }
 155
 156 typedef enum VT_H264Profile {
 157     H264_PROF_AUTO,
 158     H264_PROF_BASELINE,
 159     H264_PROF_MAIN,
 160     H264_PROF_HIGH,
 161     H264_PROF_EXTENDED,
 162     H264_PROF_COUNT
 163 } VT_H264Profile;
 164
 165 typedef enum VTH264Entropy{
 166     VT_ENTROPY_NOT_SET,
 167     VT_CAVLC,
 168     VT_CABAC
 169 } VTH264Entropy;
 170
 171 typedef enum VT_HEVCProfile {
 172     HEVC_PROF_AUTO,
 173     HEVC_PROF_MAIN,
 174     HEVC_PROF_MAIN10,
 175     HEVC_PROF_COUNT
 176 } VT_HEVCProfile;
 177
 178 static const uint8_t start_code[] = { 0, 0, 0, 1 };
 179
 180 typedef struct ExtraSEI {
 181   void *data;
 182   size_t size;
 183 } ExtraSEI;
 184
 185 typedef struct BufNode {
 186     CMSampleBufferRef cm_buffer;
 187     ExtraSEI *sei;
 188     struct BufNode* next;
 189     int error;
 190 } BufNode;
 191
 192 typedef struct VTEncContext {
 193     AVClass *class;
 194     enum AVCodecID codec_id;
 195     VTCompressionSessionRef session;
 196     CFStringRef ycbcr_matrix;
 197     CFStringRef color_primaries;
 198     CFStringRef transfer_function;
 199     getParameterSetAtIndex get_param_set_func;
 200
 201     pthread_mutex_t lock;
 202     pthread_cond_t  cv_sample_sent;
 203
 204     int async_error;
 205
 206     BufNode *q_head;
 207     BufNode *q_tail;
 208
 209     int64_t frame_ct_out;
 210     int64_t frame_ct_in;
 211
 212     int64_t first_pts;
 213     int64_t dts_delta;
 214
 215     int64_t profile;
 216     int64_t level;
 217     int64_t entropy;
 218     int64_t realtime;
 219     int64_t frames_before;
 220     int64_t frames_after;
 221
 222     int64_t allow_sw;
 223     int64_t require_sw;
 224
 225     bool flushing;
 226     bool has_b_frames;
 227     bool warned_color_range;
 228     bool a53_cc;
 229 } VTEncContext;
 230
 231 static int vtenc_populate_extradata(AVCodecContext   *avctx,
 232                                     CMVideoCodecType codec_type,
 233                                     CFStringRef      profile_level,
 234                                     CFNumberRef      gamma_level,
 235                                     CFDictionaryRef  enc_info,
 236                                     CFDictionaryRef  pixel_buffer_info);
 237
 238 /**
 239  * NULL-safe release of *refPtr, and sets value to NULL.
 240  */
 241 static void vt_release_num(CFNumberRef* refPtr){
 242     if (!*refPtr) {
 243         return;
 244     }
 245
 246     CFRelease(*refPtr);
 247     *refPtr = NULL;
 248 }
 249
 250 static void set_async_error(VTEncContext *vtctx, int err)
 251 {
 252     BufNode *info;
 253
 254     pthread_mutex_lock(&vtctx->lock);
 255
 256     vtctx->async_error = err;
 257
 258     info = vtctx->q_head;
 259     vtctx->q_head = vtctx->q_tail = NULL;
 260
 261     while (info) {
 262         BufNode *next = info->next;
 263         CFRelease(info->cm_buffer);
 264         av_free(info);
 265         info = next;
 266     }
 267
 268     pthread_mutex_unlock(&vtctx->lock);
 269 }
 270
 271 static void clear_frame_queue(VTEncContext *vtctx)
 272 {
 273     set_async_error(vtctx, 0);
 274 }
 275
 276 static int vtenc_q_pop(VTEncContext *vtctx, bool wait, CMSampleBufferRef *buf, ExtraSEI **sei)
 277 {
 278     BufNode *info;
 279
 280     pthread_mutex_lock(&vtctx->lock);
 281
 282     if (vtctx->async_error) {
 283         pthread_mutex_unlock(&vtctx->lock);
 284         return vtctx->async_error;
 285     }
 286
 287     if (vtctx->flushing && vtctx->frame_ct_in == vtctx->frame_ct_out) {
 288         *buf = NULL;
 289
 290         pthread_mutex_unlock(&vtctx->lock);
 291         return 0;
 292     }
 293
 294     while (!vtctx->q_head && !vtctx->async_error && wait) {
 295         pthread_cond_wait(&vtctx->cv_sample_sent, &vtctx->lock);
 296     }
 297
 298     if (!vtctx->q_head) {
 299         pthread_mutex_unlock(&vtctx->lock);
 300         *buf = NULL;
 301         return 0;
 302     }
 303
 304     info = vtctx->q_head;
 305     vtctx->q_head = vtctx->q_head->next;
 306     if (!vtctx->q_head) {
 307         vtctx->q_tail = NULL;
 308     }
 309
 310     pthread_mutex_unlock(&vtctx->lock);
 311
 312     *buf = info->cm_buffer;
 313     if (sei && *buf) {
 314         *sei = info->sei;
 315     } else if (info->sei) {
 316         if (info->sei->data) av_free(info->sei->data);
 317         av_free(info->sei);
 318     }
 319     av_free(info);
 320
 321     vtctx->frame_ct_out++;
 322
 323     return 0;
 324 }
 325
 326 static void vtenc_q_push(VTEncContext *vtctx, CMSampleBufferRef buffer, ExtraSEI *sei)
 327 {
 328     BufNode *info = av_malloc(sizeof(BufNode));
 329     if (!info) {
 330         set_async_error(vtctx, AVERROR(ENOMEM));
 331         return;
 332     }
 333
 334     CFRetain(buffer);
 335     info->cm_buffer = buffer;
 336     info->sei = sei;
 337     info->next = NULL;
 338
 339     pthread_mutex_lock(&vtctx->lock);
 340     pthread_cond_signal(&vtctx->cv_sample_sent);
 341
 342     if (!vtctx->q_head) {
 343         vtctx->q_head = info;
 344     } else {
 345         vtctx->q_tail->next = info;
 346     }
 347
 348     vtctx->q_tail = info;
 349
 350     pthread_mutex_unlock(&vtctx->lock);
 351 }
 352
 353 static int count_nalus(size_t length_code_size,
 354                        CMSampleBufferRef sample_buffer,
 355                        int *count)
 356 {
 357     size_t offset = 0;
 358     int status;
 359     int nalu_ct = 0;
 360     uint8_t size_buf[4];
 361     size_t src_size = CMSampleBufferGetTotalSampleSize(sample_buffer);
 362     CMBlockBufferRef block = CMSampleBufferGetDataBuffer(sample_buffer);
 363
 364     if (length_code_size > 4)
 365         return AVERROR_INVALIDDATA;
 366
 367     while (offset < src_size) {
 368         size_t curr_src_len;
 369         size_t box_len = 0;
 370         size_t i;
 371
 372         status = CMBlockBufferCopyDataBytes(block,
 373                                             offset,
 374                                             length_code_size,
 375                                             size_buf);
 376
 377         for (i = 0; i < length_code_size; i++) {
 378             box_len <<= 8;
 379             box_len |= size_buf[i];
 380         }
 381
 382         curr_src_len = box_len + length_code_size;
 383         offset += curr_src_len;
 384
 385         nalu_ct++;
 386     }
 387
 388     *count = nalu_ct;
 389     return 0;
 390 }
 391
 392 static CMVideoCodecType get_cm_codec_type(enum AVCodecID id)
 393 {
 394     switch (id) {
 395     case AV_CODEC_ID_H264: return kCMVideoCodecType_H264;
 396     case AV_CODEC_ID_HEVC: return kCMVideoCodecType_HEVC;
 397     default:               return 0;
 398     }
 399 }
 400
 401 /**
 402  * Get the parameter sets from a CMSampleBufferRef.
 403  * @param dst If *dst isn't NULL, the parameters are copied into existing
 404  *            memory. *dst_size must be set accordingly when *dst != NULL.
 405  *            If *dst is NULL, it will be allocated.
 406  *            In all cases, *dst_size is set to the number of bytes used starting
 407  *            at *dst.
 408  */
 409 static int get_params_size(
 410     AVCodecContext              *avctx,
 411     CMVideoFormatDescriptionRef vid_fmt,
 412     size_t                      *size)
 413 {
 414     VTEncContext *vtctx = avctx->priv_data;
 415     size_t total_size = 0;
 416     size_t ps_count;
 417     int is_count_bad = 0;
 418     size_t i;
 419     int status;
 420     status = vtctx->get_param_set_func(vid_fmt,
 421                                        0,
 422                                        NULL,
 423                                        NULL,
 424                                        &ps_count,
 425                                        NULL);
 426     if (status) {
 427         is_count_bad = 1;
 428         ps_count     = 0;
 429         status       = 0;
 430     }
 431
 432     for (i = 0; i < ps_count || is_count_bad; i++) {
 433         const uint8_t *ps;
 434         size_t ps_size;
 435         status = vtctx->get_param_set_func(vid_fmt,
 436                                            i,
 437                                            &ps,
 438                                            &ps_size,
 439                                            NULL,
 440                                            NULL);
 441         if (status) {
 442             /*
 443              * When ps_count is invalid, status != 0 ends the loop normally
 444              * unless we didn't get any parameter sets.
 445              */
 446             if (i > 0 && is_count_bad) status = 0;
 447
 448             break;
 449         }
 450
 451         total_size += ps_size + sizeof(start_code);
 452     }
 453
 454     if (status) {
 455         av_log(avctx, AV_LOG_ERROR, "Error getting parameter set sizes: %d\n", status);
 456         return AVERROR_EXTERNAL;
 457     }
 458
 459     *size = total_size;
 460     return 0;
 461 }
 462
 463 static int copy_param_sets(
 464     AVCodecContext              *avctx,
 465     CMVideoFormatDescriptionRef vid_fmt,
 466     uint8_t                     *dst,
 467     size_t                      dst_size)
 468 {
 469     VTEncContext *vtctx = avctx->priv_data;
 470     size_t ps_count;
 471     int is_count_bad = 0;
 472     int status;
 473     size_t offset = 0;
 474     size_t i;
 475
 476     status = vtctx->get_param_set_func(vid_fmt,
 477                                        0,
 478                                        NULL,
 479                                        NULL,
 480                                        &ps_count,
 481                                        NULL);
 482     if (status) {
 483         is_count_bad = 1;
 484         ps_count     = 0;
 485         status       = 0;
 486     }
 487
 488
 489     for (i = 0; i < ps_count || is_count_bad; i++) {
 490         const uint8_t *ps;
 491         size_t ps_size;
 492         size_t next_offset;
 493
 494         status = vtctx->get_param_set_func(vid_fmt,
 495                                            i,
 496                                            &ps,
 497                                            &ps_size,
 498                                            NULL,
 499                                            NULL);
 500         if (status) {
 501             if (i > 0 && is_count_bad) status = 0;
 502
 503             break;
 504         }
 505
 506         next_offset = offset + sizeof(start_code) + ps_size;
 507         if (dst_size < next_offset) {
 508             av_log(avctx, AV_LOG_ERROR, "Error: buffer too small for parameter sets.\n");
 509             return AVERROR_BUFFER_TOO_SMALL;
 510         }
 511
 512         memcpy(dst + offset, start_code, sizeof(start_code));
 513         offset += sizeof(start_code);
 514
 515         memcpy(dst + offset, ps, ps_size);
 516         offset = next_offset;
 517     }
 518
 519     if (status) {
 520         av_log(avctx, AV_LOG_ERROR, "Error getting parameter set data: %d\n", status);
 521         return AVERROR_EXTERNAL;
 522     }
 523
 524     return 0;
 525 }
 526
 527 static int set_extradata(AVCodecContext *avctx, CMSampleBufferRef sample_buffer)
 528 {
 529     CMVideoFormatDescriptionRef vid_fmt;
 530     size_t total_size;
 531     int status;
 532
 533     vid_fmt = CMSampleBufferGetFormatDescription(sample_buffer);
 534     if (!vid_fmt) {
 535         av_log(avctx, AV_LOG_ERROR, "No video format.\n");
 536         return AVERROR_EXTERNAL;
 537     }
 538
 539     status = get_params_size(avctx, vid_fmt, &total_size);
 540     if (status) {
 541         av_log(avctx, AV_LOG_ERROR, "Could not get parameter sets.\n");
 542         return status;
 543     }
 544
 545     avctx->extradata = av_mallocz(total_size + AV_INPUT_BUFFER_PADDING_SIZE);
 546     if (!avctx->extradata) {
 547         return AVERROR(ENOMEM);
 548     }
 549     avctx->extradata_size = total_size;
 550
 551     status = copy_param_sets(avctx, vid_fmt, avctx->extradata, total_size);
 552
 553     if (status) {
 554         av_log(avctx, AV_LOG_ERROR, "Could not copy param sets.\n");
 555         return status;
 556     }
 557
 558     return 0;
 559 }
 560
 561 static void vtenc_output_callback(
 562     void *ctx,
 563     void *sourceFrameCtx,
 564     OSStatus status,
 565     VTEncodeInfoFlags flags,
 566     CMSampleBufferRef sample_buffer)
 567 {
 568     AVCodecContext *avctx = ctx;
 569     VTEncContext   *vtctx = avctx->priv_data;
 570     ExtraSEI *sei = sourceFrameCtx;
 571
 572     if (vtctx->async_error) {
 573         if(sample_buffer) CFRelease(sample_buffer);
 574         return;
 575     }
 576
 577     if (status) {
 578         av_log(avctx, AV_LOG_ERROR, "Error encoding frame: %d\n", (int)status);
 579         set_async_error(vtctx, AVERROR_EXTERNAL);
 580         return;
 581     }
 582
 583     if (!sample_buffer) {
 584         return;
 585     }
 586
 587     if (!avctx->extradata && (avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER)) {
 588         int set_status = set_extradata(avctx, sample_buffer);
 589         if (set_status) {
 590             set_async_error(vtctx, set_status);
 591             return;
 592         }
 593     }
 594
 595     vtenc_q_push(vtctx, sample_buffer, sei);
 596 }
 597
 598 static int get_length_code_size(
 599     AVCodecContext    *avctx,
 600     CMSampleBufferRef sample_buffer,
 601     size_t            *size)
 602 {
 603     VTEncContext *vtctx = avctx->priv_data;
 604     CMVideoFormatDescriptionRef vid_fmt;
 605     int isize;
 606     int status;
 607
 608     vid_fmt = CMSampleBufferGetFormatDescription(sample_buffer);
 609     if (!vid_fmt) {
 610         av_log(avctx, AV_LOG_ERROR, "Error getting buffer format description.\n");
 611         return AVERROR_EXTERNAL;
 612     }
 613
 614     status = vtctx->get_param_set_func(vid_fmt,
 615                                        0,
 616                                        NULL,
 617                                        NULL,
 618                                        NULL,
 619                                        &isize);
 620     if (status) {
 621         av_log(avctx, AV_LOG_ERROR, "Error getting length code size: %d\n", status);
 622         return AVERROR_EXTERNAL;
 623     }
 624
 625     *size = isize;
 626     return 0;
 627 }
 628
 629 /*
 630  * Returns true on success.
 631  *
 632  * If profile_level_val is NULL and this method returns true, don't specify the
 633  * profile/level to the encoder.
 634  */
 635 static bool get_vt_h264_profile_level(AVCodecContext *avctx,
 636                                       CFStringRef    *profile_level_val)
 637 {
 638     VTEncContext *vtctx = avctx->priv_data;
 639     int64_t profile = vtctx->profile;
 640
 641     if (profile == H264_PROF_AUTO && vtctx->level) {
 642         //Need to pick a profile if level is not auto-selected.
 643         profile = vtctx->has_b_frames ? H264_PROF_MAIN : H264_PROF_BASELINE;
 644     }
 645
 646     *profile_level_val = NULL;
 647
 648     switch (profile) {
 649         case H264_PROF_AUTO:
 650             return true;
 651
 652         case H264_PROF_BASELINE:
 653             switch (vtctx->level) {
 654                 case  0: *profile_level_val =
 655                                   compat_keys.kVTProfileLevel_H264_Baseline_AutoLevel; break;
 656                 case 13: *profile_level_val = kVTProfileLevel_H264_Baseline_1_3;       break;
 657                 case 30: *profile_level_val = kVTProfileLevel_H264_Baseline_3_0;       break;
 658                 case 31: *profile_level_val = kVTProfileLevel_H264_Baseline_3_1;       break;
 659                 case 32: *profile_level_val = kVTProfileLevel_H264_Baseline_3_2;       break;
 660                 case 40: *profile_level_val =
 661                                   compat_keys.kVTProfileLevel_H264_Baseline_4_0;       break;
 662                 case 41: *profile_level_val = kVTProfileLevel_H264_Baseline_4_1;       break;
 663                 case 42: *profile_level_val =
 664                                   compat_keys.kVTProfileLevel_H264_Baseline_4_2;       break;
 665                 case 50: *profile_level_val =
 666                                   compat_keys.kVTProfileLevel_H264_Baseline_5_0;       break;
 667                 case 51: *profile_level_val =
 668                                   compat_keys.kVTProfileLevel_H264_Baseline_5_1;       break;
 669                 case 52: *profile_level_val =
 670                                   compat_keys.kVTProfileLevel_H264_Baseline_5_2;       break;
 671             }
 672             break;
 673
 674         case H264_PROF_MAIN:
 675             switch (vtctx->level) {
 676                 case  0: *profile_level_val =
 677                                   compat_keys.kVTProfileLevel_H264_Main_AutoLevel; break;
 678                 case 30: *profile_level_val = kVTProfileLevel_H264_Main_3_0;       break;
 679                 case 31: *profile_level_val = kVTProfileLevel_H264_Main_3_1;       break;
 680                 case 32: *profile_level_val = kVTProfileLevel_H264_Main_3_2;       break;
 681                 case 40: *profile_level_val = kVTProfileLevel_H264_Main_4_0;       break;
 682                 case 41: *profile_level_val = kVTProfileLevel_H264_Main_4_1;       break;
 683                 case 42: *profile_level_val =
 684                                   compat_keys.kVTProfileLevel_H264_Main_4_2;       break;
 685                 case 50: *profile_level_val = kVTProfileLevel_H264_Main_5_0;       break;
 686                 case 51: *profile_level_val =
 687                                   compat_keys.kVTProfileLevel_H264_Main_5_1;       break;
 688                 case 52: *profile_level_val =
 689                                   compat_keys.kVTProfileLevel_H264_Main_5_2;       break;
 690             }
 691             break;
 692
 693         case H264_PROF_HIGH:
 694             switch (vtctx->level) {
 695                 case  0: *profile_level_val =
 696                                   compat_keys.kVTProfileLevel_H264_High_AutoLevel; break;
 697                 case 30: *profile_level_val =
 698                                   compat_keys.kVTProfileLevel_H264_High_3_0;       break;
 699                 case 31: *profile_level_val =
 700                                   compat_keys.kVTProfileLevel_H264_High_3_1;       break;
 701                 case 32: *profile_level_val =
 702                                   compat_keys.kVTProfileLevel_H264_High_3_2;       break;
 703                 case 40: *profile_level_val =
 704                                   compat_keys.kVTProfileLevel_H264_High_4_0;       break;
 705                 case 41: *profile_level_val =
 706                                   compat_keys.kVTProfileLevel_H264_High_4_1;       break;
 707                 case 42: *profile_level_val =
 708                                   compat_keys.kVTProfileLevel_H264_High_4_2;       break;
 709                 case 50: *profile_level_val = kVTProfileLevel_H264_High_5_0;       break;
 710                 case 51: *profile_level_val =
 711                                   compat_keys.kVTProfileLevel_H264_High_5_1;       break;
 712                 case 52: *profile_level_val =
 713                                   compat_keys.kVTProfileLevel_H264_High_5_2;       break;
 714             }
 715             break;
 716         case H264_PROF_EXTENDED:
 717             switch (vtctx->level) {
 718                 case  0: *profile_level_val =
 719                                   compat_keys.kVTProfileLevel_H264_Extended_AutoLevel; break;
 720                 case 50: *profile_level_val =
 721                                   compat_keys.kVTProfileLevel_H264_Extended_5_0;       break;
 722             }
 723             break;
 724     }
 725
 726     if (!*profile_level_val) {
 727         av_log(avctx, AV_LOG_ERROR, "Invalid Profile/Level.\n");
 728         return false;
 729     }
 730
 731     return true;
 732 }
 733
 734 /*
 735  * Returns true on success.
 736  *
 737  * If profile_level_val is NULL and this method returns true, don't specify the
 738  * profile/level to the encoder.
 739  */
 740 static bool get_vt_hevc_profile_level(AVCodecContext *avctx,
 741                                       CFStringRef    *profile_level_val)
 742 {
 743     VTEncContext *vtctx = avctx->priv_data;
 744     int64_t profile = vtctx->profile;
 745
 746     *profile_level_val = NULL;
 747
 748     switch (profile) {
 749         case HEVC_PROF_AUTO:
 750             return true;
 751         case HEVC_PROF_MAIN:
 752             *profile_level_val =
 753                 compat_keys.kVTProfileLevel_HEVC_Main_AutoLevel;
 754             break;
 755         case HEVC_PROF_MAIN10:
 756             *profile_level_val =
 757                 compat_keys.kVTProfileLevel_HEVC_Main10_AutoLevel;
 758             break;
 759     }
 760
 761     if (!*profile_level_val) {
 762         av_log(avctx, AV_LOG_ERROR, "Invalid Profile/Level.\n");
 763         return false;
 764     }
 765
 766     return true;
 767 }
 768
 769 static int get_cv_pixel_format(AVCodecContext* avctx,
 770                                enum AVPixelFormat fmt,
 771                                enum AVColorRange range,
 772                                int* av_pixel_format,
 773                                int* range_guessed)
 774 {
 775     if (range_guessed) *range_guessed = range != AVCOL_RANGE_MPEG &&
 776                                         range != AVCOL_RANGE_JPEG;
 777
 778     //MPEG range is used when no range is set
 779     if (fmt == AV_PIX_FMT_NV12) {
 780         *av_pixel_format = range == AVCOL_RANGE_JPEG ?
 781                                         kCVPixelFormatType_420YpCbCr8BiPlanarFullRange :
 782                                         kCVPixelFormatType_420YpCbCr8BiPlanarVideoRange;
 783     } else if (fmt == AV_PIX_FMT_YUV420P) {
 784         *av_pixel_format = range == AVCOL_RANGE_JPEG ?
 785                                         kCVPixelFormatType_420YpCbCr8PlanarFullRange :
 786                                         kCVPixelFormatType_420YpCbCr8Planar;
 787     } else if (fmt == AV_PIX_FMT_P010LE) {
 788         *av_pixel_format = range == AVCOL_RANGE_JPEG ?
 789                                         kCVPixelFormatType_420YpCbCr10BiPlanarFullRange :
 790                                         kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange;
 791         *av_pixel_format = kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange;
 792     } else {
 793         return AVERROR(EINVAL);
 794     }
 795
 796     return 0;
 797 }
 798
 799 static void add_color_attr(AVCodecContext *avctx, CFMutableDictionaryRef dict) {
 800     VTEncContext *vtctx = avctx->priv_data;
 801
 802     if (vtctx->color_primaries) {
 803         CFDictionarySetValue(dict,
 804                              kCVImageBufferColorPrimariesKey,
 805                              vtctx->color_primaries);
 806     }
 807
 808     if (vtctx->transfer_function) {
 809         CFDictionarySetValue(dict,
 810                              kCVImageBufferTransferFunctionKey,
 811                              vtctx->transfer_function);
 812     }
 813
 814     if (vtctx->ycbcr_matrix) {
 815         CFDictionarySetValue(dict,
 816                              kCVImageBufferYCbCrMatrixKey,
 817                              vtctx->ycbcr_matrix);
 818     }
 819 }
 820
 821 static int create_cv_pixel_buffer_info(AVCodecContext* avctx,
 822                                        CFMutableDictionaryRef* dict)
 823 {
 824     CFNumberRef cv_color_format_num = NULL;
 825     CFNumberRef width_num = NULL;
 826     CFNumberRef height_num = NULL;
 827     CFMutableDictionaryRef pixel_buffer_info = NULL;
 828     int cv_color_format;
 829     int status = get_cv_pixel_format(avctx,
 830                                      avctx->pix_fmt,
 831                                      avctx->color_range,
 832                                      &cv_color_format,
 833                                      NULL);
 834     if (status) return status;
 835
 836     pixel_buffer_info = CFDictionaryCreateMutable(
 837                             kCFAllocatorDefault,
 838                             20,
 839                             &kCFCopyStringDictionaryKeyCallBacks,
 840                             &kCFTypeDictionaryValueCallBacks);
 841
 842     if (!pixel_buffer_info) goto pbinfo_nomem;
 843
 844     cv_color_format_num = CFNumberCreate(kCFAllocatorDefault,
 845                                          kCFNumberSInt32Type,
 846                                          &cv_color_format);
 847     if (!cv_color_format_num) goto pbinfo_nomem;
 848
 849     CFDictionarySetValue(pixel_buffer_info,
 850                          kCVPixelBufferPixelFormatTypeKey,
 851                          cv_color_format_num);
 852     vt_release_num(&cv_color_format_num);
 853
 854     width_num = CFNumberCreate(kCFAllocatorDefault,
 855                                kCFNumberSInt32Type,
 856                                &avctx->width);
 857     if (!width_num) return AVERROR(ENOMEM);
 858
 859     CFDictionarySetValue(pixel_buffer_info,
 860                          kCVPixelBufferWidthKey,
 861                          width_num);
 862     vt_release_num(&width_num);
 863
 864     height_num = CFNumberCreate(kCFAllocatorDefault,
 865                                 kCFNumberSInt32Type,
 866                                 &avctx->height);
 867     if (!height_num) goto pbinfo_nomem;
 868
 869     CFDictionarySetValue(pixel_buffer_info,
 870                          kCVPixelBufferHeightKey,
 871                          height_num);
 872     vt_release_num(&height_num);
 873
 874     add_color_attr(avctx, pixel_buffer_info);
 875
 876     *dict = pixel_buffer_info;
 877     return 0;
 878
 879 pbinfo_nomem:
 880     vt_release_num(&cv_color_format_num);
 881     vt_release_num(&width_num);
 882     vt_release_num(&height_num);
 883     if (pixel_buffer_info) CFRelease(pixel_buffer_info);
 884
 885     return AVERROR(ENOMEM);
 886 }
 887
 888 static int get_cv_color_primaries(AVCodecContext *avctx,
 889                                   CFStringRef *primaries)
 890 {
 891     enum AVColorPrimaries pri = avctx->color_primaries;
 892     switch (pri) {
 893         case AVCOL_PRI_UNSPECIFIED:
 894             *primaries = NULL;
 895             break;
 896
 897         case AVCOL_PRI_BT470BG:
 898             *primaries = kCVImageBufferColorPrimaries_EBU_3213;
 899             break;
 900
 901         case AVCOL_PRI_SMPTE170M:
 902             *primaries = kCVImageBufferColorPrimaries_SMPTE_C;
 903             break;
 904
 905         case AVCOL_PRI_BT709:
 906             *primaries = kCVImageBufferColorPrimaries_ITU_R_709_2;
 907             break;
 908
 909         case AVCOL_PRI_BT2020:
 910             *primaries = compat_keys.kCVImageBufferColorPrimaries_ITU_R_2020;
 911             break;
 912
 913         default:
 914             av_log(avctx, AV_LOG_ERROR, "Color primaries %s is not supported.\n", av_color_primaries_name(pri));
 915             *primaries = NULL;
 916             return -1;
 917     }
 918
 919     return 0;
 920 }
 921
 922 static int get_cv_transfer_function(AVCodecContext *avctx,
 923                                     CFStringRef *transfer_fnc,
 924                                     CFNumberRef *gamma_level)
 925 {
 926     enum AVColorTransferCharacteristic trc = avctx->color_trc;
 927     Float32 gamma;
 928     *gamma_level = NULL;
 929
 930     switch (trc) {
 931         case AVCOL_TRC_UNSPECIFIED:
 932             *transfer_fnc = NULL;
 933             break;
 934
 935         case AVCOL_TRC_BT709:
 936             *transfer_fnc = kCVImageBufferTransferFunction_ITU_R_709_2;
 937             break;
 938
 939         case AVCOL_TRC_SMPTE240M:
 940             *transfer_fnc = kCVImageBufferTransferFunction_SMPTE_240M_1995;
 941             break;
 942
 943 #if HAVE_KCVIMAGEBUFFERTRANSFERFUNCTION_SMPTE_ST_2084_PQ
 944         case AVCOL_TRC_SMPTE2084:
 945             *transfer_fnc = kCVImageBufferTransferFunction_SMPTE_ST_2084_PQ;
 946             break;
 947 #endif
 948 #if HAVE_KCVIMAGEBUFFERTRANSFERFUNCTION_LINEAR
 949         case AVCOL_TRC_LINEAR:
 950             *transfer_fnc = kCVImageBufferTransferFunction_Linear;
 951             break;
 952 #endif
 953 #if HAVE_KCVIMAGEBUFFERTRANSFERFUNCTION_ITU_R_2100_HLG
 954         case AVCOL_TRC_ARIB_STD_B67:
 955             *transfer_fnc = kCVImageBufferTransferFunction_ITU_R_2100_HLG;
 956             break;
 957 #endif
 958
 959         case AVCOL_TRC_GAMMA22:
 960             gamma = 2.2;
 961             *transfer_fnc = kCVImageBufferTransferFunction_UseGamma;
 962             *gamma_level = CFNumberCreate(NULL, kCFNumberFloat32Type, &gamma);
 963             break;
 964
 965         case AVCOL_TRC_GAMMA28:
 966             gamma = 2.8;
 967             *transfer_fnc = kCVImageBufferTransferFunction_UseGamma;
 968             *gamma_level = CFNumberCreate(NULL, kCFNumberFloat32Type, &gamma);
 969             break;
 970
 971         case AVCOL_TRC_BT2020_10:
 972         case AVCOL_TRC_BT2020_12:
 973             *transfer_fnc = compat_keys.kCVImageBufferTransferFunction_ITU_R_2020;
 974             break;
 975
 976         default:
 977             *transfer_fnc = NULL;
 978             av_log(avctx, AV_LOG_ERROR, "Transfer function %s is not supported.\n", av_color_transfer_name(trc));
 979             return -1;
 980     }
 981
 982     return 0;
 983 }
 984
 985 static int get_cv_ycbcr_matrix(AVCodecContext *avctx, CFStringRef *matrix) {
 986     switch(avctx->colorspace) {
 987         case AVCOL_SPC_BT709:
 988             *matrix = kCVImageBufferYCbCrMatrix_ITU_R_709_2;
 989             break;
 990
 991         case AVCOL_SPC_UNSPECIFIED:
 992             *matrix = NULL;
 993             break;
 994
 995         case AVCOL_SPC_BT470BG:
 996         case AVCOL_SPC_SMPTE170M:
 997             *matrix = kCVImageBufferYCbCrMatrix_ITU_R_601_4;
 998             break;
 999
1000         case AVCOL_SPC_SMPTE240M:
1001             *matrix = kCVImageBufferYCbCrMatrix_SMPTE_240M_1995;
1002             break;
1003
1004         case AVCOL_SPC_BT2020_NCL:
1005             *matrix = compat_keys.kCVImageBufferYCbCrMatrix_ITU_R_2020;
1006             break;
1007
1008         default:
1009             av_log(avctx, AV_LOG_ERROR, "Color space %s is not supported.\n", av_color_space_name(avctx->colorspace));
1010             return -1;
1011     }
1012
1013     return 0;
1014 }
1015
1016 static int vtenc_create_encoder(AVCodecContext   *avctx,
1017                                 CMVideoCodecType codec_type,
1018                                 CFStringRef      profile_level,
1019                                 CFNumberRef      gamma_level,
1020                                 CFDictionaryRef  enc_info,
1021                                 CFDictionaryRef  pixel_buffer_info,
1022                                 VTCompressionSessionRef *session)
1023 {
1024     VTEncContext *vtctx = avctx->priv_data;
1025     SInt32       bit_rate = avctx->bit_rate;
1026     SInt32       max_rate = avctx->rc_max_rate;
1027     CFNumberRef  bit_rate_num;
1028     CFNumberRef  bytes_per_second;
1029     CFNumberRef  one_second;
1030     CFArrayRef   data_rate_limits;
1031     int64_t      bytes_per_second_value = 0;
1032     int64_t      one_second_value = 0;
1033     void         *nums[2];
1034
1035     int status = VTCompressionSessionCreate(kCFAllocatorDefault,
1036                                             avctx->width,
1037                                             avctx->height,
1038                                             codec_type,
1039                                             enc_info,
1040                                             pixel_buffer_info,
1041                                             kCFAllocatorDefault,
1042                                             vtenc_output_callback,
1043                                             avctx,
1044                                             session);
1045
1046     if (status || !vtctx->session) {
1047         av_log(avctx, AV_LOG_ERROR, "Error: cannot create compression session: %d\n", status);
1048
1049 #if !TARGET_OS_IPHONE
1050         if (!vtctx->allow_sw) {
1051             av_log(avctx, AV_LOG_ERROR, "Try -allow_sw 1. The hardware encoder may be busy, or not supported.\n");
1052         }
1053 #endif
1054
1055         return AVERROR_EXTERNAL;
1056     }
1057
1058     bit_rate_num = CFNumberCreate(kCFAllocatorDefault,
1059                                   kCFNumberSInt32Type,
1060                                   &bit_rate);
1061     if (!bit_rate_num) return AVERROR(ENOMEM);
1062
1063     status = VTSessionSetProperty(vtctx->session,
1064                                   kVTCompressionPropertyKey_AverageBitRate,
1065                                   bit_rate_num);
1066     CFRelease(bit_rate_num);
1067
1068     if (status) {
1069         av_log(avctx, AV_LOG_ERROR, "Error setting bitrate property: %d\n", status);
1070         return AVERROR_EXTERNAL;
1071     }
1072
1073     if (vtctx->codec_id == AV_CODEC_ID_H264 && max_rate > 0) {
1074         // kVTCompressionPropertyKey_DataRateLimits is not available for HEVC
1075         bytes_per_second_value = max_rate >> 3;
1076         bytes_per_second = CFNumberCreate(kCFAllocatorDefault,
1077                                           kCFNumberSInt64Type,
1078                                           &bytes_per_second_value);
1079         if (!bytes_per_second) {
1080             return AVERROR(ENOMEM);
1081         }
1082         one_second_value = 1;
1083         one_second = CFNumberCreate(kCFAllocatorDefault,
1084                                     kCFNumberSInt64Type,
1085                                     &one_second_value);
1086         if (!one_second) {
1087             CFRelease(bytes_per_second);
1088             return AVERROR(ENOMEM);
1089         }
1090         nums[0] = (void *)bytes_per_second;
1091         nums[1] = (void *)one_second;
1092         data_rate_limits = CFArrayCreate(kCFAllocatorDefault,
1093                                          (const void **)nums,
1094                                          2,
1095                                          &kCFTypeArrayCallBacks);
1096
1097         if (!data_rate_limits) {
1098             CFRelease(bytes_per_second);
1099             CFRelease(one_second);
1100             return AVERROR(ENOMEM);
1101         }
1102         status = VTSessionSetProperty(vtctx->session,
1103                                       kVTCompressionPropertyKey_DataRateLimits,
1104                                       data_rate_limits);
1105
1106         CFRelease(bytes_per_second);
1107         CFRelease(one_second);
1108         CFRelease(data_rate_limits);
1109
1110         if (status) {
1111             av_log(avctx, AV_LOG_ERROR, "Error setting max bitrate property: %d\n", status);
1112             return AVERROR_EXTERNAL;
1113         }
1114     }
1115
1116     if (vtctx->codec_id == AV_CODEC_ID_H264) {
1117         // kVTCompressionPropertyKey_ProfileLevel is not available for HEVC
1118         if (profile_level) {
1119             status = VTSessionSetProperty(vtctx->session,
1120                                         kVTCompressionPropertyKey_ProfileLevel,
1121                                         profile_level);
1122             if (status) {
1123                 av_log(avctx, AV_LOG_ERROR, "Error setting profile/level property: %d. Output will be encoded using a supported profile/level combination.\n", status);
1124             }
1125         }
1126     }
1127
1128     if (avctx->gop_size > 0) {
1129         CFNumberRef interval = CFNumberCreate(kCFAllocatorDefault,
1130                                               kCFNumberIntType,
1131                                               &avctx->gop_size);
1132         if (!interval) {
1133             return AVERROR(ENOMEM);
1134         }
1135
1136         status = VTSessionSetProperty(vtctx->session,
1137                                       kVTCompressionPropertyKey_MaxKeyFrameInterval,
1138                                       interval);
1139         CFRelease(interval);
1140
1141         if (status) {
1142             av_log(avctx, AV_LOG_ERROR, "Error setting 'max key-frame interval' property: %d\n", status);
1143             return AVERROR_EXTERNAL;
1144         }
1145     }
1146
1147     if (vtctx->frames_before) {
1148         status = VTSessionSetProperty(vtctx->session,
1149                                       kVTCompressionPropertyKey_MoreFramesBeforeStart,
1150                                       kCFBooleanTrue);
1151
1152         if (status == kVTPropertyNotSupportedErr) {
1153             av_log(avctx, AV_LOG_WARNING, "frames_before property is not supported on this device. Ignoring.\n");
1154         } else if (status) {
1155             av_log(avctx, AV_LOG_ERROR, "Error setting frames_before property: %d\n", status);
1156         }
1157     }
1158
1159     if (vtctx->frames_after) {
1160         status = VTSessionSetProperty(vtctx->session,
1161                                       kVTCompressionPropertyKey_MoreFramesAfterEnd,
1162                                       kCFBooleanTrue);
1163
1164         if (status == kVTPropertyNotSupportedErr) {
1165             av_log(avctx, AV_LOG_WARNING, "frames_after property is not supported on this device. Ignoring.\n");
1166         } else if (status) {
1167             av_log(avctx, AV_LOG_ERROR, "Error setting frames_after property: %d\n", status);
1168         }
1169     }
1170
1171     if (avctx->sample_aspect_ratio.num != 0) {
1172         CFNumberRef num;
1173         CFNumberRef den;
1174         CFMutableDictionaryRef par;
1175         AVRational *avpar = &avctx->sample_aspect_ratio;
1176
1177         av_reduce(&avpar->num, &avpar->den,
1178                    avpar->num,  avpar->den,
1179                   0xFFFFFFFF);
1180
1181         num = CFNumberCreate(kCFAllocatorDefault,
1182                              kCFNumberIntType,
1183                              &avpar->num);
1184
1185         den = CFNumberCreate(kCFAllocatorDefault,
1186                              kCFNumberIntType,
1187                              &avpar->den);
1188
1189
1190
1191         par = CFDictionaryCreateMutable(kCFAllocatorDefault,
1192                                         2,
1193                                         &kCFCopyStringDictionaryKeyCallBacks,
1194                                         &kCFTypeDictionaryValueCallBacks);
1195
1196         if (!par || !num || !den) {
1197             if (par) CFRelease(par);
1198             if (num) CFRelease(num);
1199             if (den) CFRelease(den);
1200
1201             return AVERROR(ENOMEM);
1202         }
1203
1204         CFDictionarySetValue(
1205             par,
1206             kCMFormatDescriptionKey_PixelAspectRatioHorizontalSpacing,
1207             num);
1208
1209         CFDictionarySetValue(
1210             par,
1211             kCMFormatDescriptionKey_PixelAspectRatioVerticalSpacing,
1212             den);
1213
1214         status = VTSessionSetProperty(vtctx->session,
1215                                       kVTCompressionPropertyKey_PixelAspectRatio,
1216                                       par);
1217
1218         CFRelease(par);
1219         CFRelease(num);
1220         CFRelease(den);
1221
1222         if (status) {
1223             av_log(avctx,
1224                    AV_LOG_ERROR,
1225                    "Error setting pixel aspect ratio to %d:%d: %d.\n",
1226                    avctx->sample_aspect_ratio.num,
1227                    avctx->sample_aspect_ratio.den,
1228                    status);
1229
1230             return AVERROR_EXTERNAL;
1231         }
1232     }
1233
1234
1235     if (vtctx->transfer_function) {
1236         status = VTSessionSetProperty(vtctx->session,
1237                                       kVTCompressionPropertyKey_TransferFunction,
1238                                       vtctx->transfer_function);
1239
1240         if (status) {
1241             av_log(avctx, AV_LOG_WARNING, "Could not set transfer function: %d\n", status);
1242         }
1243     }
1244
1245
1246     if (vtctx->ycbcr_matrix) {
1247         status = VTSessionSetProperty(vtctx->session,
1248                                       kVTCompressionPropertyKey_YCbCrMatrix,
1249                                       vtctx->ycbcr_matrix);
1250
1251         if (status) {
1252             av_log(avctx, AV_LOG_WARNING, "Could not set ycbcr matrix: %d\n", status);
1253         }
1254     }
1255
1256
1257     if (vtctx->color_primaries) {
1258         status = VTSessionSetProperty(vtctx->session,
1259                                       kVTCompressionPropertyKey_ColorPrimaries,
1260                                       vtctx->color_primaries);
1261
1262         if (status) {
1263             av_log(avctx, AV_LOG_WARNING, "Could not set color primaries: %d\n", status);
1264         }
1265     }
1266
1267     if (gamma_level) {
1268         status = VTSessionSetProperty(vtctx->session,
1269                                       kCVImageBufferGammaLevelKey,
1270                                       gamma_level);
1271
1272         if (status) {
1273             av_log(avctx, AV_LOG_WARNING, "Could not set gamma level: %d\n", status);
1274         }
1275     }
1276
1277     if (!vtctx->has_b_frames) {
1278         status = VTSessionSetProperty(vtctx->session,
1279                                       kVTCompressionPropertyKey_AllowFrameReordering,
1280                                       kCFBooleanFalse);
1281
1282         if (status) {
1283             av_log(avctx, AV_LOG_ERROR, "Error setting 'allow frame reordering' property: %d\n", status);
1284             return AVERROR_EXTERNAL;
1285         }
1286     }
1287
1288     if (vtctx->entropy != VT_ENTROPY_NOT_SET) {
1289         CFStringRef entropy = vtctx->entropy == VT_CABAC ?
1290                                 compat_keys.kVTH264EntropyMode_CABAC:
1291                                 compat_keys.kVTH264EntropyMode_CAVLC;
1292
1293         status = VTSessionSetProperty(vtctx->session,
1294                                       compat_keys.kVTCompressionPropertyKey_H264EntropyMode,
1295                                       entropy);
1296
1297         if (status) {
1298             av_log(avctx, AV_LOG_ERROR, "Error setting entropy property: %d\n", status);
1299         }
1300     }
1301
1302     if (vtctx->realtime) {
1303         status = VTSessionSetProperty(vtctx->session,
1304                                       compat_keys.kVTCompressionPropertyKey_RealTime,
1305                                       kCFBooleanTrue);
1306
1307         if (status) {
1308             av_log(avctx, AV_LOG_ERROR, "Error setting realtime property: %d\n", status);
1309         }
1310     }
1311
1312     status = VTCompressionSessionPrepareToEncodeFrames(vtctx->session);
1313     if (status) {
1314         av_log(avctx, AV_LOG_ERROR, "Error: cannot prepare encoder: %d\n", status);
1315         return AVERROR_EXTERNAL;
1316     }
1317
1318     return 0;
1319 }
1320
1321 static int vtenc_configure_encoder(AVCodecContext *avctx)
1322 {
1323     CFMutableDictionaryRef enc_info;
1324     CFMutableDictionaryRef pixel_buffer_info;
1325     CMVideoCodecType       codec_type;
1326     VTEncContext           *vtctx = avctx->priv_data;
1327     CFStringRef            profile_level;
1328     CFNumberRef            gamma_level = NULL;
1329     int                    status;
1330
1331     codec_type = get_cm_codec_type(avctx->codec_id);
1332     if (!codec_type) {
1333         av_log(avctx, AV_LOG_ERROR, "Error: no mapping for AVCodecID %d\n", avctx->codec_id);
1334         return AVERROR(EINVAL);
1335     }
1336
1337     vtctx->codec_id = avctx->codec_id;
1338
1339     if (vtctx->codec_id == AV_CODEC_ID_H264) {
1340         vtctx->get_param_set_func = CMVideoFormatDescriptionGetH264ParameterSetAtIndex;
1341
1342         vtctx->has_b_frames = avctx->max_b_frames > 0;
1343         if(vtctx->has_b_frames && vtctx->profile == H264_PROF_BASELINE){
1344             av_log(avctx, AV_LOG_WARNING, "Cannot use B-frames with baseline profile. Output will not contain B-frames.\n");
1345             vtctx->has_b_frames = false;
1346         }
1347
1348         if (vtctx->entropy == VT_CABAC && vtctx->profile == H264_PROF_BASELINE) {
1349             av_log(avctx, AV_LOG_WARNING, "CABAC entropy requires 'main' or 'high' profile, but baseline was requested. Encode will not use CABAC entropy.\n");
1350             vtctx->entropy = VT_ENTROPY_NOT_SET;
1351         }
1352
1353         if (!get_vt_h264_profile_level(avctx, &profile_level)) return AVERROR(EINVAL);
1354     } else {
1355         vtctx->get_param_set_func = compat_keys.CMVideoFormatDescriptionGetHEVCParameterSetAtIndex;
1356         if (!vtctx->get_param_set_func) return AVERROR(EINVAL);
1357         if (!get_vt_hevc_profile_level(avctx, &profile_level)) return AVERROR(EINVAL);
1358     }
1359
1360     enc_info = CFDictionaryCreateMutable(
1361         kCFAllocatorDefault,
1362         20,
1363         &kCFCopyStringDictionaryKeyCallBacks,
1364         &kCFTypeDictionaryValueCallBacks
1365     );
1366
1367     if (!enc_info) return AVERROR(ENOMEM);
1368
1369 #if !TARGET_OS_IPHONE
1370     if(vtctx->require_sw) {
1371         CFDictionarySetValue(enc_info,
1372                              compat_keys.kVTVideoEncoderSpecification_EnableHardwareAcceleratedVideoEncoder,
1373                              kCFBooleanFalse);
1374     } else if (!vtctx->allow_sw) {
1375         CFDictionarySetValue(enc_info,
1376                              compat_keys.kVTVideoEncoderSpecification_RequireHardwareAcceleratedVideoEncoder,
1377                              kCFBooleanTrue);
1378     } else {
1379         CFDictionarySetValue(enc_info,
1380                              compat_keys.kVTVideoEncoderSpecification_EnableHardwareAcceleratedVideoEncoder,
1381                              kCFBooleanTrue);
1382     }
1383 #endif
1384
1385     if (avctx->pix_fmt != AV_PIX_FMT_VIDEOTOOLBOX) {
1386         status = create_cv_pixel_buffer_info(avctx, &pixel_buffer_info);
1387         if (status)
1388             goto init_cleanup;
1389     } else {
1390         pixel_buffer_info = NULL;
1391     }
1392
1393     vtctx->dts_delta = vtctx->has_b_frames ? -1 : 0;
1394
1395     get_cv_transfer_function(avctx, &vtctx->transfer_function, &gamma_level);
1396     get_cv_ycbcr_matrix(avctx, &vtctx->ycbcr_matrix);
1397     get_cv_color_primaries(avctx, &vtctx->color_primaries);
1398
1399
1400     if (avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER) {
1401         status = vtenc_populate_extradata(avctx,
1402                                           codec_type,
1403                                           profile_level,
1404                                           gamma_level,
1405                                           enc_info,
1406                                           pixel_buffer_info);
1407         if (status)
1408             goto init_cleanup;
1409     }
1410
1411     status = vtenc_create_encoder(avctx,
1412                                   codec_type,
1413                                   profile_level,
1414                                   gamma_level,
1415                                   enc_info,
1416                                   pixel_buffer_info,
1417                                   &vtctx->session);
1418
1419 init_cleanup:
1420     if (gamma_level)
1421         CFRelease(gamma_level);
1422
1423     if (pixel_buffer_info)
1424         CFRelease(pixel_buffer_info);
1425
1426     CFRelease(enc_info);
1427
1428     return status;
1429 }
1430
1431 static av_cold int vtenc_init(AVCodecContext *avctx)
1432 {
1433     VTEncContext    *vtctx = avctx->priv_data;
1434     CFBooleanRef    has_b_frames_cfbool;
1435     int             status;
1436
1437     pthread_once(&once_ctrl, loadVTEncSymbols);
1438
1439     pthread_mutex_init(&vtctx->lock, NULL);
1440     pthread_cond_init(&vtctx->cv_sample_sent, NULL);
1441
1442     vtctx->session = NULL;
1443     status = vtenc_configure_encoder(avctx);
1444     if (status) return status;
1445
1446     status = VTSessionCopyProperty(vtctx->session,
1447                                    kVTCompressionPropertyKey_AllowFrameReordering,
1448                                    kCFAllocatorDefault,
1449                                    &has_b_frames_cfbool);
1450
1451     if (!status && has_b_frames_cfbool) {
1452         //Some devices don't output B-frames for main profile, even if requested.
1453         vtctx->has_b_frames = CFBooleanGetValue(has_b_frames_cfbool);
1454         CFRelease(has_b_frames_cfbool);
1455     }
1456     avctx->has_b_frames = vtctx->has_b_frames;
1457
1458     return 0;
1459 }
1460
1461 static void vtenc_get_frame_info(CMSampleBufferRef buffer, bool *is_key_frame)
1462 {
1463     CFArrayRef      attachments;
1464     CFDictionaryRef attachment;
1465     CFBooleanRef    not_sync;
1466     CFIndex         len;
1467
1468     attachments = CMSampleBufferGetSampleAttachmentsArray(buffer, false);
1469     len = !attachments ? 0 : CFArrayGetCount(attachments);
1470
1471     if (!len) {
1472         *is_key_frame = true;
1473         return;
1474     }
1475
1476     attachment = CFArrayGetValueAtIndex(attachments, 0);
1477
1478     if (CFDictionaryGetValueIfPresent(attachment,
1479                                       kCMSampleAttachmentKey_NotSync,
1480                                       (const void **)&not_sync))
1481     {
1482         *is_key_frame = !CFBooleanGetValue(not_sync);
1483     } else {
1484         *is_key_frame = true;
1485     }
1486 }
1487
1488 static int is_post_sei_nal_type(int nal_type){
1489     return nal_type != H264_NAL_SEI &&
1490            nal_type != H264_NAL_SPS &&
1491            nal_type != H264_NAL_PPS &&
1492            nal_type != H264_NAL_AUD;
1493 }
1494
1495 /*
1496  * Finds the sei message start/size of type find_sei_type.
1497  * If more than one of that type exists, the last one is returned.
1498  */
1499 static int find_sei_end(AVCodecContext *avctx,
1500                         uint8_t        *nal_data,
1501                         size_t          nal_size,
1502                         uint8_t       **sei_end)
1503 {
1504     int nal_type;
1505     size_t sei_payload_size = 0;
1506     int sei_payload_type = 0;
1507     *sei_end = NULL;
1508     uint8_t *nal_start = nal_data;
1509
1510     if (!nal_size)
1511         return 0;
1512
1513     nal_type = *nal_data & 0x1F;
1514     if (nal_type != H264_NAL_SEI)
1515         return 0;
1516
1517     nal_data++;
1518     nal_size--;
1519
1520     if (nal_data[nal_size - 1] == 0x80)
1521         nal_size--;
1522
1523     while (nal_size > 0 && *nal_data > 0) {
1524         do{
1525             sei_payload_type += *nal_data;
1526             nal_data++;
1527             nal_size--;
1528         } while (nal_size > 0 && *nal_data == 0xFF);
1529
1530         if (!nal_size) {
1531             av_log(avctx, AV_LOG_ERROR, "Unexpected end of SEI NAL Unit parsing type.\n");
1532             return AVERROR_INVALIDDATA;
1533         }
1534
1535         do{
1536             sei_payload_size += *nal_data;
1537             nal_data++;
1538             nal_size--;
1539         } while (nal_size > 0 && *nal_data == 0xFF);
1540
1541         if (nal_size < sei_payload_size) {
1542             av_log(avctx, AV_LOG_ERROR, "Unexpected end of SEI NAL Unit parsing size.\n");
1543             return AVERROR_INVALIDDATA;
1544         }
1545
1546         nal_data += sei_payload_size;
1547         nal_size -= sei_payload_size;
1548     }
1549
1550     *sei_end = nal_data;
1551
1552     return nal_data - nal_start + 1;
1553 }
1554
1555 /**
1556  * Copies the data inserting emulation prevention bytes as needed.
1557  * Existing data in the destination can be taken into account by providing
1558  * dst with a dst_offset > 0.
1559  *
1560  * @return The number of bytes copied on success. On failure, the negative of
1561  *         the number of bytes needed to copy src is returned.
1562  */
1563 static int copy_emulation_prev(const uint8_t *src,
1564                                size_t         src_size,
1565                                uint8_t       *dst,
1566                                ssize_t        dst_offset,
1567                                size_t         dst_size)
1568 {
1569     int zeros = 0;
1570     int wrote_bytes;
1571     uint8_t* dst_start;
1572     uint8_t* dst_end = dst + dst_size;
1573     const uint8_t* src_end = src + src_size;
1574     int start_at = dst_offset > 2 ? dst_offset - 2 : 0;
1575     int i;
1576     for (i = start_at; i < dst_offset && i < dst_size; i++) {
1577         if (!dst[i])
1578             zeros++;
1579         else
1580             zeros = 0;
1581     }
1582
1583     dst += dst_offset;
1584     dst_start = dst;
1585     for (; src < src_end; src++, dst++) {
1586         if (zeros == 2) {
1587             int insert_ep3_byte = *src <= 3;
1588             if (insert_ep3_byte) {
1589                 if (dst < dst_end)
1590                     *dst = 3;
1591                 dst++;
1592             }
1593
1594             zeros = 0;
1595         }
1596
1597         if (dst < dst_end)
1598             *dst = *src;
1599
1600         if (!*src)
1601             zeros++;
1602         else
1603             zeros = 0;
1604     }
1605
1606     wrote_bytes = dst - dst_start;
1607
1608     if (dst > dst_end)
1609         return -wrote_bytes;
1610
1611     return wrote_bytes;
1612 }
1613
1614 static int write_sei(const ExtraSEI *sei,
1615                      int             sei_type,
1616                      uint8_t        *dst,
1617                      size_t          dst_size)
1618 {
1619     uint8_t *sei_start = dst;
1620     size_t remaining_sei_size = sei->size;
1621     size_t remaining_dst_size = dst_size;
1622     int header_bytes;
1623     int bytes_written;
1624     ssize_t offset;
1625
1626     if (!remaining_dst_size)
1627         return AVERROR_BUFFER_TOO_SMALL;
1628
1629     while (sei_type && remaining_dst_size != 0) {
1630         int sei_byte = sei_type > 255 ? 255 : sei_type;
1631         *dst = sei_byte;
1632
1633         sei_type -= sei_byte;
1634         dst++;
1635         remaining_dst_size--;
1636     }
1637
1638     if (!dst_size)
1639         return AVERROR_BUFFER_TOO_SMALL;
1640
1641     while (remaining_sei_size && remaining_dst_size != 0) {
1642         int size_byte = remaining_sei_size > 255 ? 255 : remaining_sei_size;
1643         *dst = size_byte;
1644
1645         remaining_sei_size -= size_byte;
1646         dst++;
1647         remaining_dst_size--;
1648     }
1649
1650     if (remaining_dst_size < sei->size)
1651         return AVERROR_BUFFER_TOO_SMALL;
1652
1653     header_bytes = dst - sei_start;
1654
1655     offset = header_bytes;
1656     bytes_written = copy_emulation_prev(sei->data,
1657                                         sei->size,
1658                                         sei_start,
1659                                         offset,
1660                                         dst_size);
1661     if (bytes_written < 0)
1662         return AVERROR_BUFFER_TOO_SMALL;
1663
1664     bytes_written += header_bytes;
1665     return bytes_written;
1666 }
1667
1668 /**
1669  * Copies NAL units and replaces length codes with
1670  * H.264 Annex B start codes. On failure, the contents of
1671  * dst_data may have been modified.
1672  *
1673  * @param length_code_size Byte length of each length code
1674  * @param sample_buffer NAL units prefixed with length codes.
1675  * @param sei Optional A53 closed captions SEI data.
1676  * @param dst_data Must be zeroed before calling this function.
1677  *                 Contains the copied NAL units prefixed with
1678  *                 start codes when the function returns
1679  *                 successfully.
1680  * @param dst_size Length of dst_data
1681  * @return 0 on success
1682  *         AVERROR_INVALIDDATA if length_code_size is invalid
1683  *         AVERROR_BUFFER_TOO_SMALL if dst_data is too small
1684  *         or if a length_code in src_data specifies data beyond
1685  *         the end of its buffer.
1686  */
1687 static int copy_replace_length_codes(
1688     AVCodecContext *avctx,
1689     size_t        length_code_size,
1690     CMSampleBufferRef sample_buffer,
1691     ExtraSEI      *sei,
1692     uint8_t       *dst_data,
1693     size_t        dst_size)
1694 {
1695     size_t src_size = CMSampleBufferGetTotalSampleSize(sample_buffer);
1696     size_t remaining_src_size = src_size;
1697     size_t remaining_dst_size = dst_size;
1698     size_t src_offset = 0;
1699     int wrote_sei = 0;
1700     int status;
1701     uint8_t size_buf[4];
1702     uint8_t nal_type;
1703     CMBlockBufferRef block = CMSampleBufferGetDataBuffer(sample_buffer);
1704
1705     if (length_code_size > 4) {
1706         return AVERROR_INVALIDDATA;
1707     }
1708
1709     while (remaining_src_size > 0) {
1710         size_t curr_src_len;
1711         size_t curr_dst_len;
1712         size_t box_len = 0;
1713         size_t i;
1714
1715         uint8_t       *dst_box;
1716
1717         status = CMBlockBufferCopyDataBytes(block,
1718                                             src_offset,
1719                                             length_code_size,
1720                                             size_buf);
1721         if (status) {
1722             av_log(avctx, AV_LOG_ERROR, "Cannot copy length: %d\n", status);
1723             return AVERROR_EXTERNAL;
1724         }
1725
1726         status = CMBlockBufferCopyDataBytes(block,
1727                                             src_offset + length_code_size,
1728                                             1,
1729                                             &nal_type);
1730
1731         if (status) {
1732             av_log(avctx, AV_LOG_ERROR, "Cannot copy type: %d\n", status);
1733             return AVERROR_EXTERNAL;
1734         }
1735
1736         nal_type &= 0x1F;
1737
1738         for (i = 0; i < length_code_size; i++) {
1739             box_len <<= 8;
1740             box_len |= size_buf[i];
1741         }
1742
1743         if (sei && !wrote_sei && is_post_sei_nal_type(nal_type)) {
1744             //No SEI NAL unit - insert.
1745             int wrote_bytes;
1746
1747             memcpy(dst_data, start_code, sizeof(start_code));
1748             dst_data += sizeof(start_code);
1749             remaining_dst_size -= sizeof(start_code);
1750
1751             *dst_data = H264_NAL_SEI;
1752             dst_data++;
1753             remaining_dst_size--;
1754
1755             wrote_bytes = write_sei(sei,
1756                                     H264_SEI_TYPE_USER_DATA_REGISTERED,
1757                                     dst_data,
1758                                     remaining_dst_size);
1759
1760             if (wrote_bytes < 0)
1761                 return wrote_bytes;
1762
1763             remaining_dst_size -= wrote_bytes;
1764             dst_data += wrote_bytes;
1765
1766             if (remaining_dst_size <= 0)
1767                 return AVERROR_BUFFER_TOO_SMALL;
1768
1769             *dst_data = 0x80;
1770
1771             dst_data++;
1772             remaining_dst_size--;
1773
1774             wrote_sei = 1;
1775         }
1776
1777         curr_src_len = box_len + length_code_size;
1778         curr_dst_len = box_len + sizeof(start_code);
1779
1780         if (remaining_src_size < curr_src_len) {
1781             return AVERROR_BUFFER_TOO_SMALL;
1782         }
1783
1784         if (remaining_dst_size < curr_dst_len) {
1785             return AVERROR_BUFFER_TOO_SMALL;
1786         }
1787
1788         dst_box = dst_data + sizeof(start_code);
1789
1790         memcpy(dst_data, start_code, sizeof(start_code));
1791         status = CMBlockBufferCopyDataBytes(block,
1792                                             src_offset + length_code_size,
1793                                             box_len,
1794                                             dst_box);
1795
1796         if (status) {
1797             av_log(avctx, AV_LOG_ERROR, "Cannot copy data: %d\n", status);
1798             return AVERROR_EXTERNAL;
1799         }
1800
1801         if (sei && !wrote_sei && nal_type == H264_NAL_SEI) {
1802             //Found SEI NAL unit - append.
1803             int wrote_bytes;
1804             int old_sei_length;
1805             int extra_bytes;
1806             uint8_t *new_sei;
1807             old_sei_length = find_sei_end(avctx, dst_box, box_len, &new_sei);
1808             if (old_sei_length < 0)
1809                 return status;
1810
1811             wrote_bytes = write_sei(sei,
1812                                     H264_SEI_TYPE_USER_DATA_REGISTERED,
1813                                     new_sei,
1814                                     remaining_dst_size - old_sei_length);
1815             if (wrote_bytes < 0)
1816                 return wrote_bytes;
1817
1818             if (new_sei + wrote_bytes >= dst_data + remaining_dst_size)
1819                 return AVERROR_BUFFER_TOO_SMALL;
1820
1821             new_sei[wrote_bytes++] = 0x80;
1822             extra_bytes = wrote_bytes - (dst_box + box_len - new_sei);
1823
1824             dst_data += extra_bytes;
1825             remaining_dst_size -= extra_bytes;
1826
1827             wrote_sei = 1;
1828         }
1829
1830         src_offset += curr_src_len;
1831         dst_data += curr_dst_len;
1832
1833         remaining_src_size -= curr_src_len;
1834         remaining_dst_size -= curr_dst_len;
1835     }
1836
1837     return 0;
1838 }
1839
1840 /**
1841  * Returns a sufficient number of bytes to contain the sei data.
1842  * It may be greater than the minimum required.
1843  */
1844 static int get_sei_msg_bytes(const ExtraSEI* sei, int type){
1845     int copied_size;
1846     if (sei->size == 0)
1847         return 0;
1848
1849     copied_size = -copy_emulation_prev(sei->data,
1850                                        sei->size,
1851                                        NULL,
1852                                        0,
1853                                        0);
1854
1855     if ((sei->size % 255) == 0) //may result in an extra byte
1856         copied_size++;
1857
1858     return copied_size + sei->size / 255 + 1 + type / 255 + 1;
1859 }
1860
1861 static int vtenc_cm_to_avpacket(
1862     AVCodecContext    *avctx,
1863     CMSampleBufferRef sample_buffer,
1864     AVPacket          *pkt,
1865     ExtraSEI          *sei)
1866 {
1867     VTEncContext *vtctx = avctx->priv_data;
1868
1869     int     status;
1870     bool    is_key_frame;
1871     bool    add_header;
1872     size_t  length_code_size;
1873     size_t  header_size = 0;
1874     size_t  in_buf_size;
1875     size_t  out_buf_size;
1876     size_t  sei_nalu_size = 0;
1877     int64_t dts_delta;
1878     int64_t time_base_num;
1879     int nalu_count;
1880     CMTime  pts;
1881     CMTime  dts;
1882     CMVideoFormatDescriptionRef vid_fmt;
1883
1884
1885     vtenc_get_frame_info(sample_buffer, &is_key_frame);
1886     status = get_length_code_size(avctx, sample_buffer, &length_code_size);
1887     if (status) return status;
1888
1889     add_header = is_key_frame && !(avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER);
1890
1891     if (add_header) {
1892         vid_fmt = CMSampleBufferGetFormatDescription(sample_buffer);
1893         if (!vid_fmt) {
1894             av_log(avctx, AV_LOG_ERROR, "Cannot get format description.\n");
1895             return AVERROR_EXTERNAL;
1896         }
1897
1898         int status = get_params_size(avctx, vid_fmt, &header_size);
1899         if (status) return status;
1900     }
1901
1902     status = count_nalus(length_code_size, sample_buffer, &nalu_count);
1903     if(status)
1904         return status;
1905
1906     if (sei) {
1907         size_t msg_size = get_sei_msg_bytes(sei,
1908                                             H264_SEI_TYPE_USER_DATA_REGISTERED);
1909
1910         sei_nalu_size = sizeof(start_code) + 1 + msg_size + 1;
1911     }
1912
1913     in_buf_size = CMSampleBufferGetTotalSampleSize(sample_buffer);
1914     out_buf_size = header_size +
1915                    in_buf_size +
1916                    sei_nalu_size +
1917                    nalu_count * ((int)sizeof(start_code) - (int)length_code_size);
1918
1919     status = ff_alloc_packet2(avctx, pkt, out_buf_size, out_buf_size);
1920     if (status < 0)
1921         return status;
1922
1923     if (add_header) {
1924         status = copy_param_sets(avctx, vid_fmt, pkt->data, out_buf_size);
1925         if(status) return status;
1926     }
1927
1928     status = copy_replace_length_codes(
1929         avctx,
1930         length_code_size,
1931         sample_buffer,
1932         sei,
1933         pkt->data + header_size,
1934         pkt->size - header_size
1935     );
1936
1937     if (status) {
1938         av_log(avctx, AV_LOG_ERROR, "Error copying packet data: %d\n", status);
1939         return status;
1940     }
1941
1942     if (is_key_frame) {
1943         pkt->flags |= AV_PKT_FLAG_KEY;
1944     }
1945
1946     pts = CMSampleBufferGetPresentationTimeStamp(sample_buffer);
1947     dts = CMSampleBufferGetDecodeTimeStamp      (sample_buffer);
1948
1949     if (CMTIME_IS_INVALID(dts)) {
1950         if (!vtctx->has_b_frames) {
1951             dts = pts;
1952         } else {
1953             av_log(avctx, AV_LOG_ERROR, "DTS is invalid.\n");
1954             return AVERROR_EXTERNAL;
1955         }
1956     }
1957
1958     dts_delta = vtctx->dts_delta >= 0 ? vtctx->dts_delta : 0;
1959     time_base_num = avctx->time_base.num;
1960     pkt->pts = pts.value / time_base_num;
1961     pkt->dts = dts.value / time_base_num - dts_delta;
1962     pkt->size = out_buf_size;
1963
1964     return 0;
1965 }
1966
1967 /*
1968  * contiguous_buf_size is 0 if not contiguous, and the size of the buffer
1969  * containing all planes if so.
1970  */
1971 static int get_cv_pixel_info(
1972     AVCodecContext *avctx,
1973     const AVFrame  *frame,
1974     int            *color,
1975     int            *plane_count,
1976     size_t         *widths,
1977     size_t         *heights,
1978     size_t         *strides,
1979     size_t         *contiguous_buf_size)
1980 {
1981     VTEncContext *vtctx = avctx->priv_data;
1982     int av_format       = frame->format;
1983     int av_color_range  = frame->color_range;
1984     int i;
1985     int range_guessed;
1986     int status;
1987
1988     status = get_cv_pixel_format(avctx, av_format, av_color_range, color, &range_guessed);
1989     if (status) {
1990         av_log(avctx,
1991             AV_LOG_ERROR,
1992             "Could not get pixel format for color format '%s' range '%s'.\n",
1993             av_get_pix_fmt_name(av_format),
1994             av_color_range > AVCOL_RANGE_UNSPECIFIED &&
1995             av_color_range < AVCOL_RANGE_NB ?
1996                av_color_range_name(av_color_range) :
1997                "Unknown");
1998
1999         return AVERROR(EINVAL);
2000     }
2001
2002     if (range_guessed) {
2003         if (!vtctx->warned_color_range) {
2004             vtctx->warned_color_range = true;
2005             av_log(avctx,
2006                    AV_LOG_WARNING,
2007                    "Color range not set for %s. Using MPEG range.\n",
2008                    av_get_pix_fmt_name(av_format));
2009         }
2010     }
2011
2012     switch (av_format) {
2013     case AV_PIX_FMT_NV12:
2014         *plane_count = 2;
2015
2016         widths [0] = avctx->width;
2017         heights[0] = avctx->height;
2018         strides[0] = frame ? frame->linesize[0] : avctx->width;
2019
2020         widths [1] = (avctx->width  + 1) / 2;
2021         heights[1] = (avctx->height + 1) / 2;
2022         strides[1] = frame ? frame->linesize[1] : (avctx->width + 1) & -2;
2023         break;
2024
2025     case AV_PIX_FMT_YUV420P:
2026         *plane_count = 3;
2027
2028         widths [0] = avctx->width;
2029         heights[0] = avctx->height;
2030         strides[0] = frame ? frame->linesize[0] : avctx->width;
2031
2032         widths [1] = (avctx->width  + 1) / 2;
2033         heights[1] = (avctx->height + 1) / 2;
2034         strides[1] = frame ? frame->linesize[1] : (avctx->width + 1) / 2;
2035
2036         widths [2] = (avctx->width  + 1) / 2;
2037         heights[2] = (avctx->height + 1) / 2;
2038         strides[2] = frame ? frame->linesize[2] : (avctx->width + 1) / 2;
2039         break;
2040
2041     case AV_PIX_FMT_P010LE:
2042         *plane_count = 2;
2043         widths[0] = avctx->width;
2044         heights[0] = avctx->height;
2045         strides[0] = frame ? frame->linesize[0] : (avctx->width * 2 + 63) & -64;
2046
2047         widths[1] = (avctx->width + 1) / 2;
2048         heights[1] = (avctx->height + 1) / 2;
2049         strides[1] = frame ? frame->linesize[1] : ((avctx->width + 1) / 2 + 63) & -64;
2050         break;
2051
2052     default:
2053         av_log(
2054                avctx,
2055                AV_LOG_ERROR,
2056                "Could not get frame format info for color %d range %d.\n",
2057                av_format,
2058                av_color_range);
2059
2060         return AVERROR(EINVAL);
2061     }
2062
2063     *contiguous_buf_size = 0;
2064     for (i = 0; i < *plane_count; i++) {
2065         if (i < *plane_count - 1 &&
2066             frame->data[i] + strides[i] * heights[i] != frame->data[i + 1]) {
2067             *contiguous_buf_size = 0;
2068             break;
2069         }
2070
2071         *contiguous_buf_size += strides[i] * heights[i];
2072     }
2073
2074     return 0;
2075 }
2076
2077 //Not used on OSX - frame is never copied.
2078 static int copy_avframe_to_pixel_buffer(AVCodecContext   *avctx,
2079                                         const AVFrame    *frame,
2080                                         CVPixelBufferRef cv_img,
2081                                         const size_t     *plane_strides,
2082                                         const size_t     *plane_rows)
2083 {
2084     int i, j;
2085     size_t plane_count;
2086     int status;
2087     int rows;
2088     int src_stride;
2089     int dst_stride;
2090     uint8_t *src_addr;
2091     uint8_t *dst_addr;
2092     size_t copy_bytes;
2093
2094     status = CVPixelBufferLockBaseAddress(cv_img, 0);
2095     if (status) {
2096         av_log(
2097             avctx,
2098             AV_LOG_ERROR,
2099             "Error: Could not lock base address of CVPixelBuffer: %d.\n",
2100             status
2101         );
2102     }
2103
2104     if (CVPixelBufferIsPlanar(cv_img)) {
2105         plane_count = CVPixelBufferGetPlaneCount(cv_img);
2106         for (i = 0; frame->data[i]; i++) {
2107             if (i == plane_count) {
2108                 CVPixelBufferUnlockBaseAddress(cv_img, 0);
2109                 av_log(avctx,
2110                     AV_LOG_ERROR,
2111                     "Error: different number of planes in AVFrame and CVPixelBuffer.\n"
2112                 );
2113
2114                 return AVERROR_EXTERNAL;
2115             }
2116
2117             dst_addr = (uint8_t*)CVPixelBufferGetBaseAddressOfPlane(cv_img, i);
2118             src_addr = (uint8_t*)frame->data[i];
2119             dst_stride = CVPixelBufferGetBytesPerRowOfPlane(cv_img, i);
2120             src_stride = plane_strides[i];
2121             rows = plane_rows[i];
2122
2123             if (dst_stride == src_stride) {
2124                 memcpy(dst_addr, src_addr, src_stride * rows);
2125             } else {
2126                 copy_bytes = dst_stride < src_stride ? dst_stride : src_stride;
2127
2128                 for (j = 0; j < rows; j++) {
2129                     memcpy(dst_addr + j * dst_stride, src_addr + j * src_stride, copy_bytes);
2130                 }
2131             }
2132         }
2133     } else {
2134         if (frame->data[1]) {
2135             CVPixelBufferUnlockBaseAddress(cv_img, 0);
2136             av_log(avctx,
2137                 AV_LOG_ERROR,
2138                 "Error: different number of planes in AVFrame and non-planar CVPixelBuffer.\n"
2139             );
2140
2141             return AVERROR_EXTERNAL;
2142         }
2143
2144         dst_addr = (uint8_t*)CVPixelBufferGetBaseAddress(cv_img);
2145         src_addr = (uint8_t*)frame->data[0];
2146         dst_stride = CVPixelBufferGetBytesPerRow(cv_img);
2147         src_stride = plane_strides[0];
2148         rows = plane_rows[0];
2149
2150         if (dst_stride == src_stride) {
2151             memcpy(dst_addr, src_addr, src_stride * rows);
2152         } else {
2153             copy_bytes = dst_stride < src_stride ? dst_stride : src_stride;
2154
2155             for (j = 0; j < rows; j++) {
2156                 memcpy(dst_addr + j * dst_stride, src_addr + j * src_stride, copy_bytes);
2157             }
2158         }
2159     }
2160
2161     status = CVPixelBufferUnlockBaseAddress(cv_img, 0);
2162     if (status) {
2163         av_log(avctx, AV_LOG_ERROR, "Error: Could not unlock CVPixelBuffer base address: %d.\n", status);
2164         return AVERROR_EXTERNAL;
2165     }
2166
2167     return 0;
2168 }
2169
2170 static int create_cv_pixel_buffer(AVCodecContext   *avctx,
2171                                   const AVFrame    *frame,
2172                                   CVPixelBufferRef *cv_img)
2173 {
2174     int plane_count;
2175     int color;
2176     size_t widths [AV_NUM_DATA_POINTERS];
2177     size_t heights[AV_NUM_DATA_POINTERS];
2178     size_t strides[AV_NUM_DATA_POINTERS];
2179     int status;
2180     size_t contiguous_buf_size;
2181     CVPixelBufferPoolRef pix_buf_pool;
2182     VTEncContext* vtctx = avctx->priv_data;
2183
2184     if (avctx->pix_fmt == AV_PIX_FMT_VIDEOTOOLBOX) {
2185         av_assert0(frame->format == AV_PIX_FMT_VIDEOTOOLBOX);
2186
2187         *cv_img = (CVPixelBufferRef)frame->data[3];
2188         av_assert0(*cv_img);
2189
2190         CFRetain(*cv_img);
2191         return 0;
2192     }
2193
2194     memset(widths,  0, sizeof(widths));
2195     memset(heights, 0, sizeof(heights));
2196     memset(strides, 0, sizeof(strides));
2197
2198     status = get_cv_pixel_info(
2199         avctx,
2200         frame,
2201         &color,
2202         &plane_count,
2203         widths,
2204         heights,
2205         strides,
2206         &contiguous_buf_size
2207     );
2208
2209     if (status) {
2210         av_log(
2211             avctx,
2212             AV_LOG_ERROR,
2213             "Error: Cannot convert format %d color_range %d: %d\n",
2214             frame->format,
2215             frame->color_range,
2216             status
2217         );
2218
2219         return AVERROR_EXTERNAL;
2220     }
2221
2222     pix_buf_pool = VTCompressionSessionGetPixelBufferPool(vtctx->session);
2223     if (!pix_buf_pool) {
2224         /* On iOS, the VT session is invalidated when the APP switches from
2225          * foreground to background and vice versa. Fetch the actual error code
2226          * of the VT session to detect that case and restart the VT session
2227          * accordingly. */
2228         OSStatus vtstatus;
2229
2230         vtstatus = VTCompressionSessionPrepareToEncodeFrames(vtctx->session);
2231         if (vtstatus == kVTInvalidSessionErr) {
2232             CFRelease(vtctx->session);
2233             vtctx->session = NULL;
2234             status = vtenc_configure_encoder(avctx);
2235             if (status == 0)
2236                 pix_buf_pool = VTCompressionSessionGetPixelBufferPool(vtctx->session);
2237         }
2238         if (!pix_buf_pool) {
2239             av_log(avctx, AV_LOG_ERROR, "Could not get pixel buffer pool.\n");
2240             return AVERROR_EXTERNAL;
2241         }
2242         else
2243             av_log(avctx, AV_LOG_WARNING, "VT session restarted because of a "
2244                    "kVTInvalidSessionErr error.\n");
2245     }
2246
2247     status = CVPixelBufferPoolCreatePixelBuffer(NULL,
2248                                                 pix_buf_pool,
2249                                                 cv_img);
2250
2251
2252     if (status) {
2253         av_log(avctx, AV_LOG_ERROR, "Could not create pixel buffer from pool: %d.\n", status);
2254         return AVERROR_EXTERNAL;
2255     }
2256
2257     status = copy_avframe_to_pixel_buffer(avctx, frame, *cv_img, strides, heights);
2258     if (status) {
2259         CFRelease(*cv_img);
2260         *cv_img = NULL;
2261         return status;
2262     }
2263
2264     return 0;
2265 }
2266
2267 static int create_encoder_dict_h264(const AVFrame *frame,
2268                                     CFDictionaryRef* dict_out)
2269 {
2270     CFDictionaryRef dict = NULL;
2271     if (frame->pict_type == AV_PICTURE_TYPE_I) {
2272         const void *keys[] = { kVTEncodeFrameOptionKey_ForceKeyFrame };
2273         const void *vals[] = { kCFBooleanTrue };
2274
2275         dict = CFDictionaryCreate(NULL, keys, vals, 1, NULL, NULL);
2276         if(!dict) return AVERROR(ENOMEM);
2277     }
2278
2279     *dict_out = dict;
2280     return 0;
2281 }
2282
2283 static int vtenc_send_frame(AVCodecContext *avctx,
2284                             VTEncContext   *vtctx,
2285                             const AVFrame  *frame)
2286 {
2287     CMTime time;
2288     CFDictionaryRef frame_dict;
2289     CVPixelBufferRef cv_img = NULL;
2290     AVFrameSideData *side_data = NULL;
2291     ExtraSEI *sei = NULL;
2292     int status = create_cv_pixel_buffer(avctx, frame, &cv_img);
2293
2294     if (status) return status;
2295
2296     status = create_encoder_dict_h264(frame, &frame_dict);
2297     if (status) {
2298         CFRelease(cv_img);
2299         return status;
2300     }
2301
2302     side_data = av_frame_get_side_data(frame, AV_FRAME_DATA_A53_CC);
2303     if (vtctx->a53_cc && side_data && side_data->size) {
2304         sei = av_mallocz(sizeof(*sei));
2305         if (!sei) {
2306             av_log(avctx, AV_LOG_ERROR, "Not enough memory for closed captions, skipping\n");
2307         } else {
2308             int ret = ff_alloc_a53_sei(frame, 0, &sei->data, &sei->size);
2309             if (ret < 0) {
2310                 av_log(avctx, AV_LOG_ERROR, "Not enough memory for closed captions, skipping\n");
2311                 av_free(sei);
2312                 sei = NULL;
2313             }
2314         }
2315     }
2316
2317     time = CMTimeMake(frame->pts * avctx->time_base.num, avctx->time_base.den);
2318     status = VTCompressionSessionEncodeFrame(
2319         vtctx->session,
2320         cv_img,
2321         time,
2322         kCMTimeInvalid,
2323         frame_dict,
2324         sei,
2325         NULL
2326     );
2327
2328     if (frame_dict) CFRelease(frame_dict);
2329     CFRelease(cv_img);
2330
2331     if (status) {
2332         av_log(avctx, AV_LOG_ERROR, "Error: cannot encode frame: %d\n", status);
2333         return AVERROR_EXTERNAL;
2334     }
2335
2336     return 0;
2337 }
2338
2339 static av_cold int vtenc_frame(
2340     AVCodecContext *avctx,
2341     AVPacket       *pkt,
2342     const AVFrame  *frame,
2343     int            *got_packet)
2344 {
2345     VTEncContext *vtctx = avctx->priv_data;
2346     bool get_frame;
2347     int status;
2348     CMSampleBufferRef buf = NULL;
2349     ExtraSEI *sei = NULL;
2350
2351     if (frame) {
2352         status = vtenc_send_frame(avctx, vtctx, frame);
2353
2354         if (status) {
2355             status = AVERROR_EXTERNAL;
2356             goto end_nopkt;
2357         }
2358
2359         if (vtctx->frame_ct_in == 0) {
2360             vtctx->first_pts = frame->pts;
2361         } else if(vtctx->frame_ct_in == 1 && vtctx->has_b_frames) {
2362             vtctx->dts_delta = frame->pts - vtctx->first_pts;
2363         }
2364
2365         vtctx->frame_ct_in++;
2366     } else if(!vtctx->flushing) {
2367         vtctx->flushing = true;
2368
2369         status = VTCompressionSessionCompleteFrames(vtctx->session,
2370                                                     kCMTimeIndefinite);
2371
2372         if (status) {
2373             av_log(avctx, AV_LOG_ERROR, "Error flushing frames: %d\n", status);
2374             status = AVERROR_EXTERNAL;
2375             goto end_nopkt;
2376         }
2377     }
2378
2379     *got_packet = 0;
2380     get_frame = vtctx->dts_delta >= 0 || !frame;
2381     if (!get_frame) {
2382         status = 0;
2383         goto end_nopkt;
2384     }
2385
2386     status = vtenc_q_pop(vtctx, !frame, &buf, &sei);
2387     if (status) goto end_nopkt;
2388     if (!buf)   goto end_nopkt;
2389
2390     status = vtenc_cm_to_avpacket(avctx, buf, pkt, sei);
2391     if (sei) {
2392         if (sei->data) av_free(sei->data);
2393         av_free(sei);
2394     }
2395     CFRelease(buf);
2396     if (status) goto end_nopkt;
2397
2398     *got_packet = 1;
2399     return 0;
2400
2401 end_nopkt:
2402     av_packet_unref(pkt);
2403     return status;
2404 }
2405
2406 static int vtenc_populate_extradata(AVCodecContext   *avctx,
2407                                     CMVideoCodecType codec_type,
2408                                     CFStringRef      profile_level,
2409                                     CFNumberRef      gamma_level,
2410                                     CFDictionaryRef  enc_info,
2411                                     CFDictionaryRef  pixel_buffer_info)
2412 {
2413     VTEncContext *vtctx = avctx->priv_data;
2414     int status;
2415     CVPixelBufferPoolRef pool = NULL;
2416     CVPixelBufferRef pix_buf = NULL;
2417     CMTime time;
2418     CMSampleBufferRef buf = NULL;
2419
2420     status = vtenc_create_encoder(avctx,
2421                                   codec_type,
2422                                   profile_level,
2423                                   gamma_level,
2424                                   enc_info,
2425                                   pixel_buffer_info,
2426                                   &vtctx->session);
2427     if (status)
2428         goto pe_cleanup;
2429
2430     pool = VTCompressionSessionGetPixelBufferPool(vtctx->session);
2431     if(!pool){
2432         av_log(avctx, AV_LOG_ERROR, "Error getting pixel buffer pool.\n");
2433         goto pe_cleanup;
2434     }
2435
2436     status = CVPixelBufferPoolCreatePixelBuffer(NULL,
2437                                                 pool,
2438                                                 &pix_buf);
2439
2440     if(status != kCVReturnSuccess){
2441         av_log(avctx, AV_LOG_ERROR, "Error creating frame from pool: %d\n", status);
2442         goto pe_cleanup;
2443     }
2444
2445     time = CMTimeMake(0, avctx->time_base.den);
2446     status = VTCompressionSessionEncodeFrame(vtctx->session,
2447                                              pix_buf,
2448                                              time,
2449                                              kCMTimeInvalid,
2450                                              NULL,
2451                                              NULL,
2452                                              NULL);
2453
2454     if (status) {
2455         av_log(avctx,
2456                AV_LOG_ERROR,
2457                "Error sending frame for extradata: %d\n",
2458                status);
2459
2460         goto pe_cleanup;
2461     }
2462
2463     //Populates extradata - output frames are flushed and param sets are available.
2464     status = VTCompressionSessionCompleteFrames(vtctx->session,
2465                                                 kCMTimeIndefinite);
2466
2467     if (status)
2468         goto pe_cleanup;
2469
2470     status = vtenc_q_pop(vtctx, 0, &buf, NULL);
2471     if (status) {
2472         av_log(avctx, AV_LOG_ERROR, "popping: %d\n", status);
2473         goto pe_cleanup;
2474     }
2475
2476     CFRelease(buf);
2477
2478
2479
2480 pe_cleanup:
2481     if(vtctx->session)
2482         CFRelease(vtctx->session);
2483
2484     vtctx->session = NULL;
2485     vtctx->frame_ct_out = 0;
2486
2487     av_assert0(status != 0 || (avctx->extradata && avctx->extradata_size > 0));
2488
2489     return status;
2490 }
2491
2492 static av_cold int vtenc_close(AVCodecContext *avctx)
2493 {
2494     VTEncContext *vtctx = avctx->priv_data;
2495
2496     pthread_cond_destroy(&vtctx->cv_sample_sent);
2497     pthread_mutex_destroy(&vtctx->lock);
2498
2499     if(!vtctx->session) return 0;
2500
2501     VTCompressionSessionCompleteFrames(vtctx->session,
2502                                        kCMTimeIndefinite);
2503     clear_frame_queue(vtctx);
2504     CFRelease(vtctx->session);
2505     vtctx->session = NULL;
2506
2507     if (vtctx->color_primaries) {
2508         CFRelease(vtctx->color_primaries);
2509         vtctx->color_primaries = NULL;
2510     }
2511
2512     if (vtctx->transfer_function) {
2513         CFRelease(vtctx->transfer_function);
2514         vtctx->transfer_function = NULL;
2515     }
2516
2517     if (vtctx->ycbcr_matrix) {
2518         CFRelease(vtctx->ycbcr_matrix);
2519         vtctx->ycbcr_matrix = NULL;
2520     }
2521
2522     return 0;
2523 }
2524
2525 static const enum AVPixelFormat avc_pix_fmts[] = {
2526     AV_PIX_FMT_VIDEOTOOLBOX,
2527     AV_PIX_FMT_NV12,
2528     AV_PIX_FMT_YUV420P,
2529     AV_PIX_FMT_NONE
2530 };
2531
2532 static const enum AVPixelFormat hevc_pix_fmts[] = {
2533     AV_PIX_FMT_VIDEOTOOLBOX,
2534     AV_PIX_FMT_NV12,
2535     AV_PIX_FMT_YUV420P,
2536     AV_PIX_FMT_P010LE,
2537     AV_PIX_FMT_NONE
2538 };
2539
2540 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
2541 #define COMMON_OPTIONS \
2542     { "allow_sw", "Allow software encoding", OFFSET(allow_sw), AV_OPT_TYPE_BOOL, \
2543         { .i64 = 0 }, 0, 1, VE }, \
2544     { "require_sw", "Require software encoding", OFFSET(require_sw), AV_OPT_TYPE_BOOL, \
2545         { .i64 = 0 }, 0, 1, VE }, \
2546     { "realtime", "Hint that encoding should happen in real-time if not faster (e.g. capturing from camera).", \
2547         OFFSET(realtime), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE }, \
2548     { "frames_before", "Other frames will come before the frames in this session. This helps smooth concatenation issues.", \
2549         OFFSET(frames_before), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE }, \
2550     { "frames_after", "Other frames will come after the frames in this session. This helps smooth concatenation issues.", \
2551         OFFSET(frames_after), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE },
2552
2553 #define OFFSET(x) offsetof(VTEncContext, x)
2554 static const AVOption h264_options[] = {
2555     { "profile", "Profile", OFFSET(profile), AV_OPT_TYPE_INT, { .i64 = H264_PROF_AUTO }, H264_PROF_AUTO, H264_PROF_COUNT, VE, "profile" },
2556     { "baseline", "Baseline Profile", 0, AV_OPT_TYPE_CONST, { .i64 = H264_PROF_BASELINE }, INT_MIN, INT_MAX, VE, "profile" },
2557     { "main",     "Main Profile",     0, AV_OPT_TYPE_CONST, { .i64 = H264_PROF_MAIN     }, INT_MIN, INT_MAX, VE, "profile" },
2558     { "high",     "High Profile",     0, AV_OPT_TYPE_CONST, { .i64 = H264_PROF_HIGH     }, INT_MIN, INT_MAX, VE, "profile" },
2559     { "extended", "Extend Profile",   0, AV_OPT_TYPE_CONST, { .i64 = H264_PROF_EXTENDED }, INT_MIN, INT_MAX, VE, "profile" },
2560
2561     { "level", "Level", OFFSET(level), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 52, VE, "level" },
2562     { "1.3", "Level 1.3, only available with Baseline Profile", 0, AV_OPT_TYPE_CONST, { .i64 = 13 }, INT_MIN, INT_MAX, VE, "level" },
2563     { "3.0", "Level 3.0", 0, AV_OPT_TYPE_CONST, { .i64 = 30 }, INT_MIN, INT_MAX, VE, "level" },
2564     { "3.1", "Level 3.1", 0, AV_OPT_TYPE_CONST, { .i64 = 31 }, INT_MIN, INT_MAX, VE, "level" },
2565     { "3.2", "Level 3.2", 0, AV_OPT_TYPE_CONST, { .i64 = 32 }, INT_MIN, INT_MAX, VE, "level" },
2566     { "4.0", "Level 4.0", 0, AV_OPT_TYPE_CONST, { .i64 = 40 }, INT_MIN, INT_MAX, VE, "level" },
2567     { "4.1", "Level 4.1", 0, AV_OPT_TYPE_CONST, { .i64 = 41 }, INT_MIN, INT_MAX, VE, "level" },
2568     { "4.2", "Level 4.2", 0, AV_OPT_TYPE_CONST, { .i64 = 42 }, INT_MIN, INT_MAX, VE, "level" },
2569     { "5.0", "Level 5.0", 0, AV_OPT_TYPE_CONST, { .i64 = 50 }, INT_MIN, INT_MAX, VE, "level" },
2570     { "5.1", "Level 5.1", 0, AV_OPT_TYPE_CONST, { .i64 = 51 }, INT_MIN, INT_MAX, VE, "level" },
2571     { "5.2", "Level 5.2", 0, AV_OPT_TYPE_CONST, { .i64 = 52 }, INT_MIN, INT_MAX, VE, "level" },
2572
2573     { "coder", "Entropy coding", OFFSET(entropy), AV_OPT_TYPE_INT, { .i64 = VT_ENTROPY_NOT_SET }, VT_ENTROPY_NOT_SET, VT_CABAC, VE, "coder" },
2574     { "cavlc", "CAVLC entropy coding", 0, AV_OPT_TYPE_CONST, { .i64 = VT_CAVLC }, INT_MIN, INT_MAX, VE, "coder" },
2575     { "vlc",   "CAVLC entropy coding", 0, AV_OPT_TYPE_CONST, { .i64 = VT_CAVLC }, INT_MIN, INT_MAX, VE, "coder" },
2576     { "cabac", "CABAC entropy coding", 0, AV_OPT_TYPE_CONST, { .i64 = VT_CABAC }, INT_MIN, INT_MAX, VE, "coder" },
2577     { "ac",    "CABAC entropy coding", 0, AV_OPT_TYPE_CONST, { .i64 = VT_CABAC }, INT_MIN, INT_MAX, VE, "coder" },
2578
2579     { "a53cc", "Use A53 Closed Captions (if available)", OFFSET(a53_cc), AV_OPT_TYPE_BOOL, {.i64 = 1}, 0, 1, VE },
2580
2581     COMMON_OPTIONS
2582     { NULL },
2583 };
2584
2585 static const AVClass h264_videotoolbox_class = {
2586     .class_name = "h264_videotoolbox",
2587     .item_name  = av_default_item_name,
2588     .option     = h264_options,
2589     .version    = LIBAVUTIL_VERSION_INT,
2590 };
2591
2592 AVCodec ff_h264_videotoolbox_encoder = {
2593     .name             = "h264_videotoolbox",
2594     .long_name        = NULL_IF_CONFIG_SMALL("VideoToolbox H.264 Encoder"),
2595     .type             = AVMEDIA_TYPE_VIDEO,
2596     .id               = AV_CODEC_ID_H264,
2597     .priv_data_size   = sizeof(VTEncContext),
2598     .pix_fmts         = avc_pix_fmts,
2599     .init             = vtenc_init,
2600     .encode2          = vtenc_frame,
2601     .close            = vtenc_close,
2602     .capabilities     = AV_CODEC_CAP_DELAY,
2603     .priv_class       = &h264_videotoolbox_class,
2604     .caps_internal    = FF_CODEC_CAP_INIT_THREADSAFE |
2605                         FF_CODEC_CAP_INIT_CLEANUP,
2606 };
2607
2608 static const AVOption hevc_options[] = {
2609     { "profile", "Profile", OFFSET(profile), AV_OPT_TYPE_INT, { .i64 = HEVC_PROF_AUTO }, HEVC_PROF_AUTO, HEVC_PROF_COUNT, VE, "profile" },
2610     { "main",     "Main Profile",     0, AV_OPT_TYPE_CONST, { .i64 = HEVC_PROF_MAIN   }, INT_MIN, INT_MAX, VE, "profile" },
2611     { "main10",   "Main10 Profile",   0, AV_OPT_TYPE_CONST, { .i64 = HEVC_PROF_MAIN10 }, INT_MIN, INT_MAX, VE, "profile" },
2612
2613     COMMON_OPTIONS
2614     { NULL },
2615 };
2616
2617 static const AVClass hevc_videotoolbox_class = {
2618     .class_name = "hevc_videotoolbox",
2619     .item_name  = av_default_item_name,
2620     .option     = hevc_options,
2621     .version    = LIBAVUTIL_VERSION_INT,
2622 };
2623
2624 AVCodec ff_hevc_videotoolbox_encoder = {
2625     .name             = "hevc_videotoolbox",
2626     .long_name        = NULL_IF_CONFIG_SMALL("VideoToolbox H.265 Encoder"),
2627     .type             = AVMEDIA_TYPE_VIDEO,
2628     .id               = AV_CODEC_ID_HEVC,
2629     .priv_data_size   = sizeof(VTEncContext),
2630     .pix_fmts         = hevc_pix_fmts,
2631     .init             = vtenc_init,
2632     .encode2          = vtenc_frame,
2633     .close            = vtenc_close,
2634     .capabilities     = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_HARDWARE,
2635     .priv_class       = &hevc_videotoolbox_class,
2636     .caps_internal    = FF_CODEC_CAP_INIT_THREADSAFE |
2637                         FF_CODEC_CAP_INIT_CLEANUP,
2638     .wrapper_name     = "videotoolbox",
2639 };