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 typedef OSStatus (*getParameterSetAtIndex)(CMFormatDescriptionRef videoDesc,
  43                                            size_t parameterSetIndex,
  44                                            const uint8_t **parameterSetPointerOut,
  45                                            size_t *parameterSetSizeOut,
  46                                            size_t *parameterSetCountOut,
  47                                            int *NALUnitHeaderLengthOut);
  48
  49 //These symbols may not be present
  50 static struct{
  51     CFStringRef kCVImageBufferColorPrimaries_ITU_R_2020;
  52     CFStringRef kCVImageBufferTransferFunction_ITU_R_2020;
  53     CFStringRef kCVImageBufferYCbCrMatrix_ITU_R_2020;
  54
  55     CFStringRef kVTCompressionPropertyKey_H264EntropyMode;
  56     CFStringRef kVTH264EntropyMode_CAVLC;
  57     CFStringRef kVTH264EntropyMode_CABAC;
  58
  59     CFStringRef kVTProfileLevel_H264_Baseline_4_0;
  60     CFStringRef kVTProfileLevel_H264_Baseline_4_2;
  61     CFStringRef kVTProfileLevel_H264_Baseline_5_0;
  62     CFStringRef kVTProfileLevel_H264_Baseline_5_1;
  63     CFStringRef kVTProfileLevel_H264_Baseline_5_2;
  64     CFStringRef kVTProfileLevel_H264_Baseline_AutoLevel;
  65     CFStringRef kVTProfileLevel_H264_Main_4_2;
  66     CFStringRef kVTProfileLevel_H264_Main_5_1;
  67     CFStringRef kVTProfileLevel_H264_Main_5_2;
  68     CFStringRef kVTProfileLevel_H264_Main_AutoLevel;
  69     CFStringRef kVTProfileLevel_H264_High_3_0;
  70     CFStringRef kVTProfileLevel_H264_High_3_1;
  71     CFStringRef kVTProfileLevel_H264_High_3_2;
  72     CFStringRef kVTProfileLevel_H264_High_4_0;
  73     CFStringRef kVTProfileLevel_H264_High_4_1;
  74     CFStringRef kVTProfileLevel_H264_High_4_2;
  75     CFStringRef kVTProfileLevel_H264_High_5_1;
  76     CFStringRef kVTProfileLevel_H264_High_5_2;
  77     CFStringRef kVTProfileLevel_H264_High_AutoLevel;
  78
  79     CFStringRef kVTProfileLevel_HEVC_Main_AutoLevel;
  80     CFStringRef kVTProfileLevel_HEVC_Main10_AutoLevel;
  81
  82     CFStringRef kVTCompressionPropertyKey_RealTime;
  83
  84     CFStringRef kVTVideoEncoderSpecification_EnableHardwareAcceleratedVideoEncoder;
  85     CFStringRef kVTVideoEncoderSpecification_RequireHardwareAcceleratedVideoEncoder;
  86
  87     getParameterSetAtIndex CMVideoFormatDescriptionGetHEVCParameterSetAtIndex;
  88 } compat_keys;
  89
  90 #define GET_SYM(symbol, defaultVal)                                     \
  91 do{                                                                     \
  92     CFStringRef* handle = (CFStringRef*)dlsym(RTLD_DEFAULT, #symbol);   \
  93     if(!handle)                                                         \
  94         compat_keys.symbol = CFSTR(defaultVal);                         \
  95     else                                                                \
  96         compat_keys.symbol = *handle;                                   \
  97 }while(0)
  98
  99 static pthread_once_t once_ctrl = PTHREAD_ONCE_INIT;
 100
 101 static void loadVTEncSymbols(){
 102     compat_keys.CMVideoFormatDescriptionGetHEVCParameterSetAtIndex =
 103         (getParameterSetAtIndex)dlsym(
 104             RTLD_DEFAULT,
 105             "CMVideoFormatDescriptionGetHEVCParameterSetAtIndex"
 106         );
 107
 108     GET_SYM(kCVImageBufferColorPrimaries_ITU_R_2020,   "ITU_R_2020");
 109     GET_SYM(kCVImageBufferTransferFunction_ITU_R_2020, "ITU_R_2020");
 110     GET_SYM(kCVImageBufferYCbCrMatrix_ITU_R_2020,      "ITU_R_2020");
 111
 112     GET_SYM(kVTCompressionPropertyKey_H264EntropyMode, "H264EntropyMode");
 113     GET_SYM(kVTH264EntropyMode_CAVLC, "CAVLC");
 114     GET_SYM(kVTH264EntropyMode_CABAC, "CABAC");
 115
 116     GET_SYM(kVTProfileLevel_H264_Baseline_4_0,       "H264_Baseline_4_0");
 117     GET_SYM(kVTProfileLevel_H264_Baseline_4_2,       "H264_Baseline_4_2");
 118     GET_SYM(kVTProfileLevel_H264_Baseline_5_0,       "H264_Baseline_5_0");
 119     GET_SYM(kVTProfileLevel_H264_Baseline_5_1,       "H264_Baseline_5_1");
 120     GET_SYM(kVTProfileLevel_H264_Baseline_5_2,       "H264_Baseline_5_2");
 121     GET_SYM(kVTProfileLevel_H264_Baseline_AutoLevel, "H264_Baseline_AutoLevel");
 122     GET_SYM(kVTProfileLevel_H264_Main_4_2,           "H264_Main_4_2");
 123     GET_SYM(kVTProfileLevel_H264_Main_5_1,           "H264_Main_5_1");
 124     GET_SYM(kVTProfileLevel_H264_Main_5_2,           "H264_Main_5_2");
 125     GET_SYM(kVTProfileLevel_H264_Main_AutoLevel,     "H264_Main_AutoLevel");
 126     GET_SYM(kVTProfileLevel_H264_High_3_0,           "H264_High_3_0");
 127     GET_SYM(kVTProfileLevel_H264_High_3_1,           "H264_High_3_1");
 128     GET_SYM(kVTProfileLevel_H264_High_3_2,           "H264_High_3_2");
 129     GET_SYM(kVTProfileLevel_H264_High_4_0,           "H264_High_4_0");
 130     GET_SYM(kVTProfileLevel_H264_High_4_1,           "H264_High_4_1");
 131     GET_SYM(kVTProfileLevel_H264_High_4_2,           "H264_High_4_2");
 132     GET_SYM(kVTProfileLevel_H264_High_5_1,           "H264_High_5_1");
 133     GET_SYM(kVTProfileLevel_H264_High_5_2,           "H264_High_5_2");
 134     GET_SYM(kVTProfileLevel_H264_High_AutoLevel,     "H264_High_AutoLevel");
 135
 136     GET_SYM(kVTProfileLevel_HEVC_Main_AutoLevel,     "HEVC_Main_AutoLevel");
 137     GET_SYM(kVTProfileLevel_HEVC_Main10_AutoLevel,   "HEVC_Main10_AutoLevel");
 138
 139     GET_SYM(kVTCompressionPropertyKey_RealTime, "RealTime");
 140
 141     GET_SYM(kVTVideoEncoderSpecification_EnableHardwareAcceleratedVideoEncoder,
 142             "EnableHardwareAcceleratedVideoEncoder");
 143     GET_SYM(kVTVideoEncoderSpecification_RequireHardwareAcceleratedVideoEncoder,
 144             "RequireHardwareAcceleratedVideoEncoder");
 145 }
 146
 147 typedef enum VT_H264Profile {
 148     H264_PROF_AUTO,
 149     H264_PROF_BASELINE,
 150     H264_PROF_MAIN,
 151     H264_PROF_HIGH,
 152     H264_PROF_COUNT
 153 } VT_H264Profile;
 154
 155 typedef enum VTH264Entropy{
 156     VT_ENTROPY_NOT_SET,
 157     VT_CAVLC,
 158     VT_CABAC
 159 } VTH264Entropy;
 160
 161 typedef enum VT_HEVCProfile {
 162     HEVC_PROF_AUTO,
 163     HEVC_PROF_MAIN,
 164     HEVC_PROF_MAIN10,
 165     HEVC_PROF_COUNT
 166 } VT_HEVCProfile;
 167
 168 static const uint8_t start_code[] = { 0, 0, 0, 1 };
 169
 170 typedef struct ExtraSEI {
 171   void *data;
 172   size_t size;
 173 } ExtraSEI;
 174
 175 typedef struct BufNode {
 176     CMSampleBufferRef cm_buffer;
 177     ExtraSEI *sei;
 178     struct BufNode* next;
 179     int error;
 180 } BufNode;
 181
 182 typedef struct VTEncContext {
 183     AVClass *class;
 184     enum AVCodecID codec_id;
 185     VTCompressionSessionRef session;
 186     CFStringRef ycbcr_matrix;
 187     CFStringRef color_primaries;
 188     CFStringRef transfer_function;
 189     getParameterSetAtIndex get_param_set_func;
 190
 191     pthread_mutex_t lock;
 192     pthread_cond_t  cv_sample_sent;
 193
 194     int async_error;
 195
 196     BufNode *q_head;
 197     BufNode *q_tail;
 198
 199     int64_t frame_ct_out;
 200     int64_t frame_ct_in;
 201
 202     int64_t first_pts;
 203     int64_t dts_delta;
 204
 205     int64_t profile;
 206     int64_t level;
 207     int64_t entropy;
 208     int64_t realtime;
 209     int64_t frames_before;
 210     int64_t frames_after;
 211
 212     int64_t allow_sw;
 213
 214     bool flushing;
 215     bool has_b_frames;
 216     bool warned_color_range;
 217     bool a53_cc;
 218 } VTEncContext;
 219
 220 static int vtenc_populate_extradata(AVCodecContext   *avctx,
 221                                     CMVideoCodecType codec_type,
 222                                     CFStringRef      profile_level,
 223                                     CFNumberRef      gamma_level,
 224                                     CFDictionaryRef  enc_info,
 225                                     CFDictionaryRef  pixel_buffer_info);
 226
 227 /**
 228  * NULL-safe release of *refPtr, and sets value to NULL.
 229  */
 230 static void vt_release_num(CFNumberRef* refPtr){
 231     if (!*refPtr) {
 232         return;
 233     }
 234
 235     CFRelease(*refPtr);
 236     *refPtr = NULL;
 237 }
 238
 239 static void set_async_error(VTEncContext *vtctx, int err)
 240 {
 241     BufNode *info;
 242
 243     pthread_mutex_lock(&vtctx->lock);
 244
 245     vtctx->async_error = err;
 246
 247     info = vtctx->q_head;
 248     vtctx->q_head = vtctx->q_tail = NULL;
 249
 250     while (info) {
 251         BufNode *next = info->next;
 252         CFRelease(info->cm_buffer);
 253         av_free(info);
 254         info = next;
 255     }
 256
 257     pthread_mutex_unlock(&vtctx->lock);
 258 }
 259
 260 static void clear_frame_queue(VTEncContext *vtctx)
 261 {
 262     set_async_error(vtctx, 0);
 263 }
 264
 265 static int vtenc_q_pop(VTEncContext *vtctx, bool wait, CMSampleBufferRef *buf, ExtraSEI **sei)
 266 {
 267     BufNode *info;
 268
 269     pthread_mutex_lock(&vtctx->lock);
 270
 271     if (vtctx->async_error) {
 272         pthread_mutex_unlock(&vtctx->lock);
 273         return vtctx->async_error;
 274     }
 275
 276     if (vtctx->flushing && vtctx->frame_ct_in == vtctx->frame_ct_out) {
 277         *buf = NULL;
 278
 279         pthread_mutex_unlock(&vtctx->lock);
 280         return 0;
 281     }
 282
 283     while (!vtctx->q_head && !vtctx->async_error && wait) {
 284         pthread_cond_wait(&vtctx->cv_sample_sent, &vtctx->lock);
 285     }
 286
 287     if (!vtctx->q_head) {
 288         pthread_mutex_unlock(&vtctx->lock);
 289         *buf = NULL;
 290         return 0;
 291     }
 292
 293     info = vtctx->q_head;
 294     vtctx->q_head = vtctx->q_head->next;
 295     if (!vtctx->q_head) {
 296         vtctx->q_tail = NULL;
 297     }
 298
 299     pthread_mutex_unlock(&vtctx->lock);
 300
 301     *buf = info->cm_buffer;
 302     if (sei && *buf) {
 303         *sei = info->sei;
 304     } else if (info->sei) {
 305         if (info->sei->data) av_free(info->sei->data);
 306         av_free(info->sei);
 307     }
 308     av_free(info);
 309
 310     vtctx->frame_ct_out++;
 311
 312     return 0;
 313 }
 314
 315 static void vtenc_q_push(VTEncContext *vtctx, CMSampleBufferRef buffer, ExtraSEI *sei)
 316 {
 317     BufNode *info = av_malloc(sizeof(BufNode));
 318     if (!info) {
 319         set_async_error(vtctx, AVERROR(ENOMEM));
 320         return;
 321     }
 322
 323     CFRetain(buffer);
 324     info->cm_buffer = buffer;
 325     info->sei = sei;
 326     info->next = NULL;
 327
 328     pthread_mutex_lock(&vtctx->lock);
 329     pthread_cond_signal(&vtctx->cv_sample_sent);
 330
 331     if (!vtctx->q_head) {
 332         vtctx->q_head = info;
 333     } else {
 334         vtctx->q_tail->next = info;
 335     }
 336
 337     vtctx->q_tail = info;
 338
 339     pthread_mutex_unlock(&vtctx->lock);
 340 }
 341
 342 static int count_nalus(size_t length_code_size,
 343                        CMSampleBufferRef sample_buffer,
 344                        int *count)
 345 {
 346     size_t offset = 0;
 347     int status;
 348     int nalu_ct = 0;
 349     uint8_t size_buf[4];
 350     size_t src_size = CMSampleBufferGetTotalSampleSize(sample_buffer);
 351     CMBlockBufferRef block = CMSampleBufferGetDataBuffer(sample_buffer);
 352
 353     if (length_code_size > 4)
 354         return AVERROR_INVALIDDATA;
 355
 356     while (offset < src_size) {
 357         size_t curr_src_len;
 358         size_t box_len = 0;
 359         size_t i;
 360
 361         status = CMBlockBufferCopyDataBytes(block,
 362                                             offset,
 363                                             length_code_size,
 364                                             size_buf);
 365
 366         for (i = 0; i < length_code_size; i++) {
 367             box_len <<= 8;
 368             box_len |= size_buf[i];
 369         }
 370
 371         curr_src_len = box_len + length_code_size;
 372         offset += curr_src_len;
 373
 374         nalu_ct++;
 375     }
 376
 377     *count = nalu_ct;
 378     return 0;
 379 }
 380
 381 static CMVideoCodecType get_cm_codec_type(enum AVCodecID id)
 382 {
 383     switch (id) {
 384     case AV_CODEC_ID_H264: return kCMVideoCodecType_H264;
 385     case AV_CODEC_ID_HEVC: return kCMVideoCodecType_HEVC;
 386     default:               return 0;
 387     }
 388 }
 389
 390 /**
 391  * Get the parameter sets from a CMSampleBufferRef.
 392  * @param dst If *dst isn't NULL, the parameters are copied into existing
 393  *            memory. *dst_size must be set accordingly when *dst != NULL.
 394  *            If *dst is NULL, it will be allocated.
 395  *            In all cases, *dst_size is set to the number of bytes used starting
 396  *            at *dst.
 397  */
 398 static int get_params_size(
 399     AVCodecContext              *avctx,
 400     CMVideoFormatDescriptionRef vid_fmt,
 401     size_t                      *size)
 402 {
 403     VTEncContext *vtctx = avctx->priv_data;
 404     size_t total_size = 0;
 405     size_t ps_count;
 406     int is_count_bad = 0;
 407     size_t i;
 408     int status;
 409     status = vtctx->get_param_set_func(vid_fmt,
 410                                        0,
 411                                        NULL,
 412                                        NULL,
 413                                        &ps_count,
 414                                        NULL);
 415     if (status) {
 416         is_count_bad = 1;
 417         ps_count     = 0;
 418         status       = 0;
 419     }
 420
 421     for (i = 0; i < ps_count || is_count_bad; i++) {
 422         const uint8_t *ps;
 423         size_t ps_size;
 424         status = vtctx->get_param_set_func(vid_fmt,
 425                                            i,
 426                                            &ps,
 427                                            &ps_size,
 428                                            NULL,
 429                                            NULL);
 430         if (status) {
 431             /*
 432              * When ps_count is invalid, status != 0 ends the loop normally
 433              * unless we didn't get any parameter sets.
 434              */
 435             if (i > 0 && is_count_bad) status = 0;
 436
 437             break;
 438         }
 439
 440         total_size += ps_size + sizeof(start_code);
 441     }
 442
 443     if (status) {
 444         av_log(avctx, AV_LOG_ERROR, "Error getting parameter set sizes: %d\n", status);
 445         return AVERROR_EXTERNAL;
 446     }
 447
 448     *size = total_size;
 449     return 0;
 450 }
 451
 452 static int copy_param_sets(
 453     AVCodecContext              *avctx,
 454     CMVideoFormatDescriptionRef vid_fmt,
 455     uint8_t                     *dst,
 456     size_t                      dst_size)
 457 {
 458     VTEncContext *vtctx = avctx->priv_data;
 459     size_t ps_count;
 460     int is_count_bad = 0;
 461     int status;
 462     size_t offset = 0;
 463     size_t i;
 464
 465     status = vtctx->get_param_set_func(vid_fmt,
 466                                        0,
 467                                        NULL,
 468                                        NULL,
 469                                        &ps_count,
 470                                        NULL);
 471     if (status) {
 472         is_count_bad = 1;
 473         ps_count     = 0;
 474         status       = 0;
 475     }
 476
 477
 478     for (i = 0; i < ps_count || is_count_bad; i++) {
 479         const uint8_t *ps;
 480         size_t ps_size;
 481         size_t next_offset;
 482
 483         status = vtctx->get_param_set_func(vid_fmt,
 484                                            i,
 485                                            &ps,
 486                                            &ps_size,
 487                                            NULL,
 488                                            NULL);
 489         if (status) {
 490             if (i > 0 && is_count_bad) status = 0;
 491
 492             break;
 493         }
 494
 495         next_offset = offset + sizeof(start_code) + ps_size;
 496         if (dst_size < next_offset) {
 497             av_log(avctx, AV_LOG_ERROR, "Error: buffer too small for parameter sets.\n");
 498             return AVERROR_BUFFER_TOO_SMALL;
 499         }
 500
 501         memcpy(dst + offset, start_code, sizeof(start_code));
 502         offset += sizeof(start_code);
 503
 504         memcpy(dst + offset, ps, ps_size);
 505         offset = next_offset;
 506     }
 507
 508     if (status) {
 509         av_log(avctx, AV_LOG_ERROR, "Error getting parameter set data: %d\n", status);
 510         return AVERROR_EXTERNAL;
 511     }
 512
 513     return 0;
 514 }
 515
 516 static int set_extradata(AVCodecContext *avctx, CMSampleBufferRef sample_buffer)
 517 {
 518     CMVideoFormatDescriptionRef vid_fmt;
 519     size_t total_size;
 520     int status;
 521
 522     vid_fmt = CMSampleBufferGetFormatDescription(sample_buffer);
 523     if (!vid_fmt) {
 524         av_log(avctx, AV_LOG_ERROR, "No video format.\n");
 525         return AVERROR_EXTERNAL;
 526     }
 527
 528     status = get_params_size(avctx, vid_fmt, &total_size);
 529     if (status) {
 530         av_log(avctx, AV_LOG_ERROR, "Could not get parameter sets.\n");
 531         return status;
 532     }
 533
 534     avctx->extradata = av_mallocz(total_size + AV_INPUT_BUFFER_PADDING_SIZE);
 535     if (!avctx->extradata) {
 536         return AVERROR(ENOMEM);
 537     }
 538     avctx->extradata_size = total_size;
 539
 540     status = copy_param_sets(avctx, vid_fmt, avctx->extradata, total_size);
 541
 542     if (status) {
 543         av_log(avctx, AV_LOG_ERROR, "Could not copy param sets.\n");
 544         return status;
 545     }
 546
 547     return 0;
 548 }
 549
 550 static void vtenc_output_callback(
 551     void *ctx,
 552     void *sourceFrameCtx,
 553     OSStatus status,
 554     VTEncodeInfoFlags flags,
 555     CMSampleBufferRef sample_buffer)
 556 {
 557     AVCodecContext *avctx = ctx;
 558     VTEncContext   *vtctx = avctx->priv_data;
 559     ExtraSEI *sei = sourceFrameCtx;
 560
 561     if (vtctx->async_error) {
 562         if(sample_buffer) CFRelease(sample_buffer);
 563         return;
 564     }
 565
 566     if (status || !sample_buffer) {
 567         av_log(avctx, AV_LOG_ERROR, "Error encoding frame: %d\n", (int)status);
 568         set_async_error(vtctx, AVERROR_EXTERNAL);
 569         return;
 570     }
 571
 572     if (!avctx->extradata && (avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER)) {
 573         int set_status = set_extradata(avctx, sample_buffer);
 574         if (set_status) {
 575             set_async_error(vtctx, set_status);
 576             return;
 577         }
 578     }
 579
 580     vtenc_q_push(vtctx, sample_buffer, sei);
 581 }
 582
 583 static int get_length_code_size(
 584     AVCodecContext    *avctx,
 585     CMSampleBufferRef sample_buffer,
 586     size_t            *size)
 587 {
 588     VTEncContext *vtctx = avctx->priv_data;
 589     CMVideoFormatDescriptionRef vid_fmt;
 590     int isize;
 591     int status;
 592
 593     vid_fmt = CMSampleBufferGetFormatDescription(sample_buffer);
 594     if (!vid_fmt) {
 595         av_log(avctx, AV_LOG_ERROR, "Error getting buffer format description.\n");
 596         return AVERROR_EXTERNAL;
 597     }
 598
 599     status = vtctx->get_param_set_func(vid_fmt,
 600                                        0,
 601                                        NULL,
 602                                        NULL,
 603                                        NULL,
 604                                        &isize);
 605     if (status) {
 606         av_log(avctx, AV_LOG_ERROR, "Error getting length code size: %d\n", status);
 607         return AVERROR_EXTERNAL;
 608     }
 609
 610     *size = isize;
 611     return 0;
 612 }
 613
 614 /*
 615  * Returns true on success.
 616  *
 617  * If profile_level_val is NULL and this method returns true, don't specify the
 618  * profile/level to the encoder.
 619  */
 620 static bool get_vt_h264_profile_level(AVCodecContext *avctx,
 621                                       CFStringRef    *profile_level_val)
 622 {
 623     VTEncContext *vtctx = avctx->priv_data;
 624     int64_t profile = vtctx->profile;
 625
 626     if (profile == H264_PROF_AUTO && vtctx->level) {
 627         //Need to pick a profile if level is not auto-selected.
 628         profile = vtctx->has_b_frames ? H264_PROF_MAIN : H264_PROF_BASELINE;
 629     }
 630
 631     *profile_level_val = NULL;
 632
 633     switch (profile) {
 634         case H264_PROF_AUTO:
 635             return true;
 636
 637         case H264_PROF_BASELINE:
 638             switch (vtctx->level) {
 639                 case  0: *profile_level_val =
 640                                   compat_keys.kVTProfileLevel_H264_Baseline_AutoLevel; break;
 641                 case 13: *profile_level_val = kVTProfileLevel_H264_Baseline_1_3;       break;
 642                 case 30: *profile_level_val = kVTProfileLevel_H264_Baseline_3_0;       break;
 643                 case 31: *profile_level_val = kVTProfileLevel_H264_Baseline_3_1;       break;
 644                 case 32: *profile_level_val = kVTProfileLevel_H264_Baseline_3_2;       break;
 645                 case 40: *profile_level_val =
 646                                   compat_keys.kVTProfileLevel_H264_Baseline_4_0;       break;
 647                 case 41: *profile_level_val = kVTProfileLevel_H264_Baseline_4_1;       break;
 648                 case 42: *profile_level_val =
 649                                   compat_keys.kVTProfileLevel_H264_Baseline_4_2;       break;
 650                 case 50: *profile_level_val =
 651                                   compat_keys.kVTProfileLevel_H264_Baseline_5_0;       break;
 652                 case 51: *profile_level_val =
 653                                   compat_keys.kVTProfileLevel_H264_Baseline_5_1;       break;
 654                 case 52: *profile_level_val =
 655                                   compat_keys.kVTProfileLevel_H264_Baseline_5_2;       break;
 656             }
 657             break;
 658
 659         case H264_PROF_MAIN:
 660             switch (vtctx->level) {
 661                 case  0: *profile_level_val =
 662                                   compat_keys.kVTProfileLevel_H264_Main_AutoLevel; break;
 663                 case 30: *profile_level_val = kVTProfileLevel_H264_Main_3_0;       break;
 664                 case 31: *profile_level_val = kVTProfileLevel_H264_Main_3_1;       break;
 665                 case 32: *profile_level_val = kVTProfileLevel_H264_Main_3_2;       break;
 666                 case 40: *profile_level_val = kVTProfileLevel_H264_Main_4_0;       break;
 667                 case 41: *profile_level_val = kVTProfileLevel_H264_Main_4_1;       break;
 668                 case 42: *profile_level_val =
 669                                   compat_keys.kVTProfileLevel_H264_Main_4_2;       break;
 670                 case 50: *profile_level_val = kVTProfileLevel_H264_Main_5_0;       break;
 671                 case 51: *profile_level_val =
 672                                   compat_keys.kVTProfileLevel_H264_Main_5_1;       break;
 673                 case 52: *profile_level_val =
 674                                   compat_keys.kVTProfileLevel_H264_Main_5_2;       break;
 675             }
 676             break;
 677
 678         case H264_PROF_HIGH:
 679             switch (vtctx->level) {
 680                 case  0: *profile_level_val =
 681                                   compat_keys.kVTProfileLevel_H264_High_AutoLevel; break;
 682                 case 30: *profile_level_val =
 683                                   compat_keys.kVTProfileLevel_H264_High_3_0;       break;
 684                 case 31: *profile_level_val =
 685                                   compat_keys.kVTProfileLevel_H264_High_3_1;       break;
 686                 case 32: *profile_level_val =
 687                                   compat_keys.kVTProfileLevel_H264_High_3_2;       break;
 688                 case 40: *profile_level_val =
 689                                   compat_keys.kVTProfileLevel_H264_High_4_0;       break;
 690                 case 41: *profile_level_val =
 691                                   compat_keys.kVTProfileLevel_H264_High_4_1;       break;
 692                 case 42: *profile_level_val =
 693                                   compat_keys.kVTProfileLevel_H264_High_4_2;       break;
 694                 case 50: *profile_level_val = kVTProfileLevel_H264_High_5_0;       break;
 695                 case 51: *profile_level_val =
 696                                   compat_keys.kVTProfileLevel_H264_High_5_1;       break;
 697                 case 52: *profile_level_val =
 698                                   compat_keys.kVTProfileLevel_H264_High_5_2;       break;
 699             }
 700             break;
 701     }
 702
 703     if (!*profile_level_val) {
 704         av_log(avctx, AV_LOG_ERROR, "Invalid Profile/Level.\n");
 705         return false;
 706     }
 707
 708     return true;
 709 }
 710
 711 /*
 712  * Returns true on success.
 713  *
 714  * If profile_level_val is NULL and this method returns true, don't specify the
 715  * profile/level to the encoder.
 716  */
 717 static bool get_vt_hevc_profile_level(AVCodecContext *avctx,
 718                                       CFStringRef    *profile_level_val)
 719 {
 720     VTEncContext *vtctx = avctx->priv_data;
 721     int64_t profile = vtctx->profile;
 722
 723     *profile_level_val = NULL;
 724
 725     switch (profile) {
 726         case HEVC_PROF_AUTO:
 727             return true;
 728         case HEVC_PROF_MAIN:
 729             *profile_level_val =
 730                 compat_keys.kVTProfileLevel_HEVC_Main_AutoLevel;
 731             break;
 732         case HEVC_PROF_MAIN10:
 733             *profile_level_val =
 734                 compat_keys.kVTProfileLevel_HEVC_Main10_AutoLevel;
 735             break;
 736     }
 737
 738     if (!*profile_level_val) {
 739         av_log(avctx, AV_LOG_ERROR, "Invalid Profile/Level.\n");
 740         return false;
 741     }
 742
 743     return true;
 744 }
 745
 746 static int get_cv_pixel_format(AVCodecContext* avctx,
 747                                enum AVPixelFormat fmt,
 748                                enum AVColorRange range,
 749                                int* av_pixel_format,
 750                                int* range_guessed)
 751 {
 752     if (range_guessed) *range_guessed = range != AVCOL_RANGE_MPEG &&
 753                                         range != AVCOL_RANGE_JPEG;
 754
 755     //MPEG range is used when no range is set
 756     if (fmt == AV_PIX_FMT_NV12) {
 757         *av_pixel_format = range == AVCOL_RANGE_JPEG ?
 758                                         kCVPixelFormatType_420YpCbCr8BiPlanarFullRange :
 759                                         kCVPixelFormatType_420YpCbCr8BiPlanarVideoRange;
 760     } else if (fmt == AV_PIX_FMT_YUV420P) {
 761         *av_pixel_format = range == AVCOL_RANGE_JPEG ?
 762                                         kCVPixelFormatType_420YpCbCr8PlanarFullRange :
 763                                         kCVPixelFormatType_420YpCbCr8Planar;
 764     } else {
 765         return AVERROR(EINVAL);
 766     }
 767
 768     return 0;
 769 }
 770
 771 static void add_color_attr(AVCodecContext *avctx, CFMutableDictionaryRef dict) {
 772     VTEncContext *vtctx = avctx->priv_data;
 773
 774     if (vtctx->color_primaries) {
 775         CFDictionarySetValue(dict,
 776                              kCVImageBufferColorPrimariesKey,
 777                              vtctx->color_primaries);
 778     }
 779
 780     if (vtctx->transfer_function) {
 781         CFDictionarySetValue(dict,
 782                              kCVImageBufferTransferFunctionKey,
 783                              vtctx->transfer_function);
 784     }
 785
 786     if (vtctx->ycbcr_matrix) {
 787         CFDictionarySetValue(dict,
 788                              kCVImageBufferYCbCrMatrixKey,
 789                              vtctx->ycbcr_matrix);
 790     }
 791 }
 792
 793 static int create_cv_pixel_buffer_info(AVCodecContext* avctx,
 794                                        CFMutableDictionaryRef* dict)
 795 {
 796     CFNumberRef cv_color_format_num = NULL;
 797     CFNumberRef width_num = NULL;
 798     CFNumberRef height_num = NULL;
 799     CFMutableDictionaryRef pixel_buffer_info = NULL;
 800     int cv_color_format;
 801     int status = get_cv_pixel_format(avctx,
 802                                      avctx->pix_fmt,
 803                                      avctx->color_range,
 804                                      &cv_color_format,
 805                                      NULL);
 806     if (status) return status;
 807
 808     pixel_buffer_info = CFDictionaryCreateMutable(
 809                             kCFAllocatorDefault,
 810                             20,
 811                             &kCFCopyStringDictionaryKeyCallBacks,
 812                             &kCFTypeDictionaryValueCallBacks);
 813
 814     if (!pixel_buffer_info) goto pbinfo_nomem;
 815
 816     cv_color_format_num = CFNumberCreate(kCFAllocatorDefault,
 817                                          kCFNumberSInt32Type,
 818                                          &cv_color_format);
 819     if (!cv_color_format_num) goto pbinfo_nomem;
 820
 821     CFDictionarySetValue(pixel_buffer_info,
 822                          kCVPixelBufferPixelFormatTypeKey,
 823                          cv_color_format_num);
 824     vt_release_num(&cv_color_format_num);
 825
 826     width_num = CFNumberCreate(kCFAllocatorDefault,
 827                                kCFNumberSInt32Type,
 828                                &avctx->width);
 829     if (!width_num) return AVERROR(ENOMEM);
 830
 831     CFDictionarySetValue(pixel_buffer_info,
 832                          kCVPixelBufferWidthKey,
 833                          width_num);
 834     vt_release_num(&width_num);
 835
 836     height_num = CFNumberCreate(kCFAllocatorDefault,
 837                                 kCFNumberSInt32Type,
 838                                 &avctx->height);
 839     if (!height_num) goto pbinfo_nomem;
 840
 841     CFDictionarySetValue(pixel_buffer_info,
 842                          kCVPixelBufferHeightKey,
 843                          height_num);
 844     vt_release_num(&height_num);
 845
 846     add_color_attr(avctx, pixel_buffer_info);
 847
 848     *dict = pixel_buffer_info;
 849     return 0;
 850
 851 pbinfo_nomem:
 852     vt_release_num(&cv_color_format_num);
 853     vt_release_num(&width_num);
 854     vt_release_num(&height_num);
 855     if (pixel_buffer_info) CFRelease(pixel_buffer_info);
 856
 857     return AVERROR(ENOMEM);
 858 }
 859
 860 static int get_cv_color_primaries(AVCodecContext *avctx,
 861                                   CFStringRef *primaries)
 862 {
 863     enum AVColorPrimaries pri = avctx->color_primaries;
 864     switch (pri) {
 865         case AVCOL_PRI_UNSPECIFIED:
 866             *primaries = NULL;
 867             break;
 868
 869         case AVCOL_PRI_BT709:
 870             *primaries = kCVImageBufferColorPrimaries_ITU_R_709_2;
 871             break;
 872
 873         case AVCOL_PRI_BT2020:
 874             *primaries = compat_keys.kCVImageBufferColorPrimaries_ITU_R_2020;
 875             break;
 876
 877         default:
 878             av_log(avctx, AV_LOG_ERROR, "Color primaries %s is not supported.\n", av_color_primaries_name(pri));
 879             *primaries = NULL;
 880             return -1;
 881     }
 882
 883     return 0;
 884 }
 885
 886 static int get_cv_transfer_function(AVCodecContext *avctx,
 887                                     CFStringRef *transfer_fnc,
 888                                     CFNumberRef *gamma_level)
 889 {
 890     enum AVColorTransferCharacteristic trc = avctx->color_trc;
 891     Float32 gamma;
 892     *gamma_level = NULL;
 893
 894     switch (trc) {
 895         case AVCOL_TRC_UNSPECIFIED:
 896             *transfer_fnc = NULL;
 897             break;
 898
 899         case AVCOL_TRC_BT709:
 900             *transfer_fnc = kCVImageBufferTransferFunction_ITU_R_709_2;
 901             break;
 902
 903         case AVCOL_TRC_SMPTE240M:
 904             *transfer_fnc = kCVImageBufferTransferFunction_SMPTE_240M_1995;
 905             break;
 906
 907         case AVCOL_TRC_GAMMA22:
 908             gamma = 2.2;
 909             *transfer_fnc = kCVImageBufferTransferFunction_UseGamma;
 910             *gamma_level = CFNumberCreate(NULL, kCFNumberFloat32Type, &gamma);
 911             break;
 912
 913         case AVCOL_TRC_GAMMA28:
 914             gamma = 2.8;
 915             *transfer_fnc = kCVImageBufferTransferFunction_UseGamma;
 916             *gamma_level = CFNumberCreate(NULL, kCFNumberFloat32Type, &gamma);
 917             break;
 918
 919         case AVCOL_TRC_BT2020_10:
 920         case AVCOL_TRC_BT2020_12:
 921             *transfer_fnc = compat_keys.kCVImageBufferTransferFunction_ITU_R_2020;
 922             break;
 923
 924         default:
 925             av_log(avctx, AV_LOG_ERROR, "Transfer function %s is not supported.\n", av_color_transfer_name(trc));
 926             return -1;
 927     }
 928
 929     return 0;
 930 }
 931
 932 static int get_cv_ycbcr_matrix(AVCodecContext *avctx, CFStringRef *matrix) {
 933     switch(avctx->colorspace) {
 934         case AVCOL_SPC_BT709:
 935             *matrix = kCVImageBufferYCbCrMatrix_ITU_R_709_2;
 936             break;
 937
 938         case AVCOL_SPC_UNSPECIFIED:
 939             *matrix = NULL;
 940             break;
 941
 942         case AVCOL_SPC_BT470BG:
 943         case AVCOL_SPC_SMPTE170M:
 944             *matrix = kCVImageBufferYCbCrMatrix_ITU_R_601_4;
 945             break;
 946
 947         case AVCOL_SPC_SMPTE240M:
 948             *matrix = kCVImageBufferYCbCrMatrix_SMPTE_240M_1995;
 949             break;
 950
 951         case AVCOL_SPC_BT2020_NCL:
 952             *matrix = compat_keys.kCVImageBufferYCbCrMatrix_ITU_R_2020;
 953             break;
 954
 955         default:
 956             av_log(avctx, AV_LOG_ERROR, "Color space %s is not supported.\n", av_color_space_name(avctx->colorspace));
 957             return -1;
 958     }
 959
 960     return 0;
 961 }
 962
 963 static int vtenc_create_encoder(AVCodecContext   *avctx,
 964                                 CMVideoCodecType codec_type,
 965                                 CFStringRef      profile_level,
 966                                 CFNumberRef      gamma_level,
 967                                 CFDictionaryRef  enc_info,
 968                                 CFDictionaryRef  pixel_buffer_info,
 969                                 VTCompressionSessionRef *session)
 970 {
 971     VTEncContext *vtctx = avctx->priv_data;
 972     SInt32       bit_rate = avctx->bit_rate;
 973     SInt32       max_rate = avctx->rc_max_rate;
 974     CFNumberRef  bit_rate_num;
 975     CFNumberRef  bytes_per_second;
 976     CFNumberRef  one_second;
 977     CFArrayRef   data_rate_limits;
 978     int64_t      bytes_per_second_value = 0;
 979     int64_t      one_second_value = 0;
 980     void         *nums[2];
 981
 982     int status = VTCompressionSessionCreate(kCFAllocatorDefault,
 983                                             avctx->width,
 984                                             avctx->height,
 985                                             codec_type,
 986                                             enc_info,
 987                                             pixel_buffer_info,
 988                                             kCFAllocatorDefault,
 989                                             vtenc_output_callback,
 990                                             avctx,
 991                                             session);
 992
 993     if (status || !vtctx->session) {
 994         av_log(avctx, AV_LOG_ERROR, "Error: cannot create compression session: %d\n", status);
 995
 996 #if !TARGET_OS_IPHONE
 997         if (!vtctx->allow_sw) {
 998             av_log(avctx, AV_LOG_ERROR, "Try -allow_sw 1. The hardware encoder may be busy, or not supported.\n");
 999         }
1000 #endif
1001
1002         return AVERROR_EXTERNAL;
1003     }
1004
1005     bit_rate_num = CFNumberCreate(kCFAllocatorDefault,
1006                                   kCFNumberSInt32Type,
1007                                   &bit_rate);
1008     if (!bit_rate_num) return AVERROR(ENOMEM);
1009
1010     status = VTSessionSetProperty(vtctx->session,
1011                                   kVTCompressionPropertyKey_AverageBitRate,
1012                                   bit_rate_num);
1013     CFRelease(bit_rate_num);
1014
1015     if (status) {
1016         av_log(avctx, AV_LOG_ERROR, "Error setting bitrate property: %d\n", status);
1017         return AVERROR_EXTERNAL;
1018     }
1019
1020     if (vtctx->codec_id == AV_CODEC_ID_H264 && max_rate > 0) {
1021         // kVTCompressionPropertyKey_DataRateLimits is not available for HEVC
1022         bytes_per_second_value = max_rate >> 3;
1023         bytes_per_second = CFNumberCreate(kCFAllocatorDefault,
1024                                           kCFNumberSInt64Type,
1025                                           &bytes_per_second_value);
1026         if (!bytes_per_second) {
1027             return AVERROR(ENOMEM);
1028         }
1029         one_second_value = 1;
1030         one_second = CFNumberCreate(kCFAllocatorDefault,
1031                                     kCFNumberSInt64Type,
1032                                     &one_second_value);
1033         if (!one_second) {
1034             CFRelease(bytes_per_second);
1035             return AVERROR(ENOMEM);
1036         }
1037         nums[0] = (void *)bytes_per_second;
1038         nums[1] = (void *)one_second;
1039         data_rate_limits = CFArrayCreate(kCFAllocatorDefault,
1040                                          (const void **)nums,
1041                                          2,
1042                                          &kCFTypeArrayCallBacks);
1043
1044         if (!data_rate_limits) {
1045             CFRelease(bytes_per_second);
1046             CFRelease(one_second);
1047             return AVERROR(ENOMEM);
1048         }
1049         status = VTSessionSetProperty(vtctx->session,
1050                                       kVTCompressionPropertyKey_DataRateLimits,
1051                                       data_rate_limits);
1052
1053         CFRelease(bytes_per_second);
1054         CFRelease(one_second);
1055         CFRelease(data_rate_limits);
1056
1057         if (status) {
1058             av_log(avctx, AV_LOG_ERROR, "Error setting max bitrate property: %d\n", status);
1059             return AVERROR_EXTERNAL;
1060         }
1061     }
1062
1063     if (vtctx->codec_id == AV_CODEC_ID_H264) {
1064         // kVTCompressionPropertyKey_ProfileLevel is not available for HEVC
1065         if (profile_level) {
1066             status = VTSessionSetProperty(vtctx->session,
1067                                         kVTCompressionPropertyKey_ProfileLevel,
1068                                         profile_level);
1069             if (status) {
1070                 av_log(avctx, AV_LOG_ERROR, "Error setting profile/level property: %d\n", status);
1071             }
1072         }
1073     }
1074
1075     if (avctx->gop_size > 0) {
1076         CFNumberRef interval = CFNumberCreate(kCFAllocatorDefault,
1077                                               kCFNumberIntType,
1078                                               &avctx->gop_size);
1079         if (!interval) {
1080             return AVERROR(ENOMEM);
1081         }
1082
1083         status = VTSessionSetProperty(vtctx->session,
1084                                       kVTCompressionPropertyKey_MaxKeyFrameInterval,
1085                                       interval);
1086         CFRelease(interval);
1087
1088         if (status) {
1089             av_log(avctx, AV_LOG_ERROR, "Error setting 'max key-frame interval' property: %d\n", status);
1090             return AVERROR_EXTERNAL;
1091         }
1092     }
1093
1094     if (vtctx->frames_before) {
1095         status = VTSessionSetProperty(vtctx->session,
1096                                       kVTCompressionPropertyKey_MoreFramesBeforeStart,
1097                                       kCFBooleanTrue);
1098
1099         if (status == kVTPropertyNotSupportedErr) {
1100             av_log(avctx, AV_LOG_WARNING, "frames_before property is not supported on this device. Ignoring.\n");
1101         } else if (status) {
1102             av_log(avctx, AV_LOG_ERROR, "Error setting frames_before property: %d\n", status);
1103         }
1104     }
1105
1106     if (vtctx->frames_after) {
1107         status = VTSessionSetProperty(vtctx->session,
1108                                       kVTCompressionPropertyKey_MoreFramesAfterEnd,
1109                                       kCFBooleanTrue);
1110
1111         if (status == kVTPropertyNotSupportedErr) {
1112             av_log(avctx, AV_LOG_WARNING, "frames_after property is not supported on this device. Ignoring.\n");
1113         } else if (status) {
1114             av_log(avctx, AV_LOG_ERROR, "Error setting frames_after property: %d\n", status);
1115         }
1116     }
1117
1118     if (avctx->sample_aspect_ratio.num != 0) {
1119         CFNumberRef num;
1120         CFNumberRef den;
1121         CFMutableDictionaryRef par;
1122         AVRational *avpar = &avctx->sample_aspect_ratio;
1123
1124         av_reduce(&avpar->num, &avpar->den,
1125                    avpar->num,  avpar->den,
1126                   0xFFFFFFFF);
1127
1128         num = CFNumberCreate(kCFAllocatorDefault,
1129                              kCFNumberIntType,
1130                              &avpar->num);
1131
1132         den = CFNumberCreate(kCFAllocatorDefault,
1133                              kCFNumberIntType,
1134                              &avpar->den);
1135
1136
1137
1138         par = CFDictionaryCreateMutable(kCFAllocatorDefault,
1139                                         2,
1140                                         &kCFCopyStringDictionaryKeyCallBacks,
1141                                         &kCFTypeDictionaryValueCallBacks);
1142
1143         if (!par || !num || !den) {
1144             if (par) CFRelease(par);
1145             if (num) CFRelease(num);
1146             if (den) CFRelease(den);
1147
1148             return AVERROR(ENOMEM);
1149         }
1150
1151         CFDictionarySetValue(
1152             par,
1153             kCMFormatDescriptionKey_PixelAspectRatioHorizontalSpacing,
1154             num);
1155
1156         CFDictionarySetValue(
1157             par,
1158             kCMFormatDescriptionKey_PixelAspectRatioVerticalSpacing,
1159             den);
1160
1161         status = VTSessionSetProperty(vtctx->session,
1162                                       kVTCompressionPropertyKey_PixelAspectRatio,
1163                                       par);
1164
1165         CFRelease(par);
1166         CFRelease(num);
1167         CFRelease(den);
1168
1169         if (status) {
1170             av_log(avctx,
1171                    AV_LOG_ERROR,
1172                    "Error setting pixel aspect ratio to %d:%d: %d.\n",
1173                    avctx->sample_aspect_ratio.num,
1174                    avctx->sample_aspect_ratio.den,
1175                    status);
1176
1177             return AVERROR_EXTERNAL;
1178         }
1179     }
1180
1181
1182     if (vtctx->transfer_function) {
1183         status = VTSessionSetProperty(vtctx->session,
1184                                       kVTCompressionPropertyKey_TransferFunction,
1185                                       vtctx->transfer_function);
1186
1187         if (status) {
1188             av_log(avctx, AV_LOG_WARNING, "Could not set transfer function: %d\n", status);
1189         }
1190     }
1191
1192
1193     if (vtctx->ycbcr_matrix) {
1194         status = VTSessionSetProperty(vtctx->session,
1195                                       kVTCompressionPropertyKey_YCbCrMatrix,
1196                                       vtctx->ycbcr_matrix);
1197
1198         if (status) {
1199             av_log(avctx, AV_LOG_WARNING, "Could not set ycbcr matrix: %d\n", status);
1200         }
1201     }
1202
1203
1204     if (vtctx->color_primaries) {
1205         status = VTSessionSetProperty(vtctx->session,
1206                                       kVTCompressionPropertyKey_ColorPrimaries,
1207                                       vtctx->color_primaries);
1208
1209         if (status) {
1210             av_log(avctx, AV_LOG_WARNING, "Could not set color primaries: %d\n", status);
1211         }
1212     }
1213
1214     if (gamma_level) {
1215         status = VTSessionSetProperty(vtctx->session,
1216                                       kCVImageBufferGammaLevelKey,
1217                                       gamma_level);
1218
1219         if (status) {
1220             av_log(avctx, AV_LOG_WARNING, "Could not set gamma level: %d\n", status);
1221         }
1222     }
1223
1224     if (!vtctx->has_b_frames) {
1225         status = VTSessionSetProperty(vtctx->session,
1226                                       kVTCompressionPropertyKey_AllowFrameReordering,
1227                                       kCFBooleanFalse);
1228
1229         if (status) {
1230             av_log(avctx, AV_LOG_ERROR, "Error setting 'allow frame reordering' property: %d\n", status);
1231             return AVERROR_EXTERNAL;
1232         }
1233     }
1234
1235     if (vtctx->entropy != VT_ENTROPY_NOT_SET) {
1236         CFStringRef entropy = vtctx->entropy == VT_CABAC ?
1237                                 compat_keys.kVTH264EntropyMode_CABAC:
1238                                 compat_keys.kVTH264EntropyMode_CAVLC;
1239
1240         status = VTSessionSetProperty(vtctx->session,
1241                                       compat_keys.kVTCompressionPropertyKey_H264EntropyMode,
1242                                       entropy);
1243
1244         if (status) {
1245             av_log(avctx, AV_LOG_ERROR, "Error setting entropy property: %d\n", status);
1246         }
1247     }
1248
1249     if (vtctx->realtime) {
1250         status = VTSessionSetProperty(vtctx->session,
1251                                       compat_keys.kVTCompressionPropertyKey_RealTime,
1252                                       kCFBooleanTrue);
1253
1254         if (status) {
1255             av_log(avctx, AV_LOG_ERROR, "Error setting realtime property: %d\n", status);
1256         }
1257     }
1258
1259     status = VTCompressionSessionPrepareToEncodeFrames(vtctx->session);
1260     if (status) {
1261         av_log(avctx, AV_LOG_ERROR, "Error: cannot prepare encoder: %d\n", status);
1262         return AVERROR_EXTERNAL;
1263     }
1264
1265     return 0;
1266 }
1267
1268 static int vtenc_configure_encoder(AVCodecContext *avctx)
1269 {
1270     CFMutableDictionaryRef enc_info;
1271     CFMutableDictionaryRef pixel_buffer_info;
1272     CMVideoCodecType       codec_type;
1273     VTEncContext           *vtctx = avctx->priv_data;
1274     CFStringRef            profile_level;
1275     CFNumberRef            gamma_level = NULL;
1276     int                    status;
1277
1278     codec_type = get_cm_codec_type(avctx->codec_id);
1279     if (!codec_type) {
1280         av_log(avctx, AV_LOG_ERROR, "Error: no mapping for AVCodecID %d\n", avctx->codec_id);
1281         return AVERROR(EINVAL);
1282     }
1283
1284     vtctx->codec_id = avctx->codec_id;
1285
1286     if (vtctx->codec_id == AV_CODEC_ID_H264) {
1287         vtctx->get_param_set_func = CMVideoFormatDescriptionGetH264ParameterSetAtIndex;
1288
1289         vtctx->has_b_frames = avctx->max_b_frames > 0;
1290         if(vtctx->has_b_frames && vtctx->profile == H264_PROF_BASELINE){
1291             av_log(avctx, AV_LOG_WARNING, "Cannot use B-frames with baseline profile. Output will not contain B-frames.\n");
1292             vtctx->has_b_frames = false;
1293         }
1294
1295         if (vtctx->entropy == VT_CABAC && vtctx->profile == H264_PROF_BASELINE) {
1296             av_log(avctx, AV_LOG_WARNING, "CABAC entropy requires 'main' or 'high' profile, but baseline was requested. Encode will not use CABAC entropy.\n");
1297             vtctx->entropy = VT_ENTROPY_NOT_SET;
1298         }
1299
1300         if (!get_vt_h264_profile_level(avctx, &profile_level)) return AVERROR(EINVAL);
1301     } else {
1302         vtctx->get_param_set_func = compat_keys.CMVideoFormatDescriptionGetHEVCParameterSetAtIndex;
1303         if (!vtctx->get_param_set_func) return AVERROR(EINVAL);
1304         if (!get_vt_hevc_profile_level(avctx, &profile_level)) return AVERROR(EINVAL);
1305     }
1306
1307     enc_info = CFDictionaryCreateMutable(
1308         kCFAllocatorDefault,
1309         20,
1310         &kCFCopyStringDictionaryKeyCallBacks,
1311         &kCFTypeDictionaryValueCallBacks
1312     );
1313
1314     if (!enc_info) return AVERROR(ENOMEM);
1315
1316 #if !TARGET_OS_IPHONE
1317     if (!vtctx->allow_sw) {
1318         CFDictionarySetValue(enc_info,
1319                              compat_keys.kVTVideoEncoderSpecification_RequireHardwareAcceleratedVideoEncoder,
1320                              kCFBooleanTrue);
1321     } else {
1322         CFDictionarySetValue(enc_info,
1323                              compat_keys.kVTVideoEncoderSpecification_EnableHardwareAcceleratedVideoEncoder,
1324                              kCFBooleanTrue);
1325     }
1326 #endif
1327
1328     if (avctx->pix_fmt != AV_PIX_FMT_VIDEOTOOLBOX) {
1329         status = create_cv_pixel_buffer_info(avctx, &pixel_buffer_info);
1330         if (status)
1331             goto init_cleanup;
1332     } else {
1333         pixel_buffer_info = NULL;
1334     }
1335
1336     vtctx->dts_delta = vtctx->has_b_frames ? -1 : 0;
1337
1338     get_cv_transfer_function(avctx, &vtctx->transfer_function, &gamma_level);
1339     get_cv_ycbcr_matrix(avctx, &vtctx->ycbcr_matrix);
1340     get_cv_color_primaries(avctx, &vtctx->color_primaries);
1341
1342
1343     if (avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER) {
1344         status = vtenc_populate_extradata(avctx,
1345                                           codec_type,
1346                                           profile_level,
1347                                           gamma_level,
1348                                           enc_info,
1349                                           pixel_buffer_info);
1350         if (status)
1351             goto init_cleanup;
1352     }
1353
1354     status = vtenc_create_encoder(avctx,
1355                                   codec_type,
1356                                   profile_level,
1357                                   gamma_level,
1358                                   enc_info,
1359                                   pixel_buffer_info,
1360                                   &vtctx->session);
1361
1362 init_cleanup:
1363     if (gamma_level)
1364         CFRelease(gamma_level);
1365
1366     if (pixel_buffer_info)
1367         CFRelease(pixel_buffer_info);
1368
1369     CFRelease(enc_info);
1370
1371     return status;
1372 }
1373
1374 static av_cold int vtenc_init(AVCodecContext *avctx)
1375 {
1376     VTEncContext    *vtctx = avctx->priv_data;
1377     CFBooleanRef    has_b_frames_cfbool;
1378     int             status;
1379
1380     pthread_once(&once_ctrl, loadVTEncSymbols);
1381
1382     pthread_mutex_init(&vtctx->lock, NULL);
1383     pthread_cond_init(&vtctx->cv_sample_sent, NULL);
1384
1385     vtctx->session = NULL;
1386     status = vtenc_configure_encoder(avctx);
1387     if (status) return status;
1388
1389     status = VTSessionCopyProperty(vtctx->session,
1390                                    kVTCompressionPropertyKey_AllowFrameReordering,
1391                                    kCFAllocatorDefault,
1392                                    &has_b_frames_cfbool);
1393
1394     if (!status && has_b_frames_cfbool) {
1395         //Some devices don't output B-frames for main profile, even if requested.
1396         vtctx->has_b_frames = CFBooleanGetValue(has_b_frames_cfbool);
1397         CFRelease(has_b_frames_cfbool);
1398     }
1399     avctx->has_b_frames = vtctx->has_b_frames;
1400
1401     return 0;
1402 }
1403
1404 static void vtenc_get_frame_info(CMSampleBufferRef buffer, bool *is_key_frame)
1405 {
1406     CFArrayRef      attachments;
1407     CFDictionaryRef attachment;
1408     CFBooleanRef    not_sync;
1409     CFIndex         len;
1410
1411     attachments = CMSampleBufferGetSampleAttachmentsArray(buffer, false);
1412     len = !attachments ? 0 : CFArrayGetCount(attachments);
1413
1414     if (!len) {
1415         *is_key_frame = true;
1416         return;
1417     }
1418
1419     attachment = CFArrayGetValueAtIndex(attachments, 0);
1420
1421     if (CFDictionaryGetValueIfPresent(attachment,
1422                                       kCMSampleAttachmentKey_NotSync,
1423                                       (const void **)&not_sync))
1424     {
1425         *is_key_frame = !CFBooleanGetValue(not_sync);
1426     } else {
1427         *is_key_frame = true;
1428     }
1429 }
1430
1431 static int is_post_sei_nal_type(int nal_type){
1432     return nal_type != H264_NAL_SEI &&
1433            nal_type != H264_NAL_SPS &&
1434            nal_type != H264_NAL_PPS &&
1435            nal_type != H264_NAL_AUD;
1436 }
1437
1438 /*
1439  * Finds the sei message start/size of type find_sei_type.
1440  * If more than one of that type exists, the last one is returned.
1441  */
1442 static int find_sei_end(AVCodecContext *avctx,
1443                         uint8_t        *nal_data,
1444                         size_t          nal_size,
1445                         uint8_t       **sei_end)
1446 {
1447     int nal_type;
1448     size_t sei_payload_size = 0;
1449     int sei_payload_type = 0;
1450     *sei_end = NULL;
1451     uint8_t *nal_start = nal_data;
1452
1453     if (!nal_size)
1454         return 0;
1455
1456     nal_type = *nal_data & 0x1F;
1457     if (nal_type != H264_NAL_SEI)
1458         return 0;
1459
1460     nal_data++;
1461     nal_size--;
1462
1463     if (nal_data[nal_size - 1] == 0x80)
1464         nal_size--;
1465
1466     while (nal_size > 0 && *nal_data > 0) {
1467         do{
1468             sei_payload_type += *nal_data;
1469             nal_data++;
1470             nal_size--;
1471         } while (nal_size > 0 && *nal_data == 0xFF);
1472
1473         if (!nal_size) {
1474             av_log(avctx, AV_LOG_ERROR, "Unexpected end of SEI NAL Unit parsing type.\n");
1475             return AVERROR_INVALIDDATA;
1476         }
1477
1478         do{
1479             sei_payload_size += *nal_data;
1480             nal_data++;
1481             nal_size--;
1482         } while (nal_size > 0 && *nal_data == 0xFF);
1483
1484         if (nal_size < sei_payload_size) {
1485             av_log(avctx, AV_LOG_ERROR, "Unexpected end of SEI NAL Unit parsing size.\n");
1486             return AVERROR_INVALIDDATA;
1487         }
1488
1489         nal_data += sei_payload_size;
1490         nal_size -= sei_payload_size;
1491     }
1492
1493     *sei_end = nal_data;
1494
1495     return nal_data - nal_start + 1;
1496 }
1497
1498 /**
1499  * Copies the data inserting emulation prevention bytes as needed.
1500  * Existing data in the destination can be taken into account by providing
1501  * dst with a dst_offset > 0.
1502  *
1503  * @return The number of bytes copied on success. On failure, the negative of
1504  *         the number of bytes needed to copy src is returned.
1505  */
1506 static int copy_emulation_prev(const uint8_t *src,
1507                                size_t         src_size,
1508                                uint8_t       *dst,
1509                                ssize_t        dst_offset,
1510                                size_t         dst_size)
1511 {
1512     int zeros = 0;
1513     int wrote_bytes;
1514     uint8_t* dst_start;
1515     uint8_t* dst_end = dst + dst_size;
1516     const uint8_t* src_end = src + src_size;
1517     int start_at = dst_offset > 2 ? dst_offset - 2 : 0;
1518     int i;
1519     for (i = start_at; i < dst_offset && i < dst_size; i++) {
1520         if (!dst[i])
1521             zeros++;
1522         else
1523             zeros = 0;
1524     }
1525
1526     dst += dst_offset;
1527     dst_start = dst;
1528     for (; src < src_end; src++, dst++) {
1529         if (zeros == 2) {
1530             int insert_ep3_byte = *src <= 3;
1531             if (insert_ep3_byte) {
1532                 if (dst < dst_end)
1533                     *dst = 3;
1534                 dst++;
1535             }
1536
1537             zeros = 0;
1538         }
1539
1540         if (dst < dst_end)
1541             *dst = *src;
1542
1543         if (!*src)
1544             zeros++;
1545         else
1546             zeros = 0;
1547     }
1548
1549     wrote_bytes = dst - dst_start;
1550
1551     if (dst > dst_end)
1552         return -wrote_bytes;
1553
1554     return wrote_bytes;
1555 }
1556
1557 static int write_sei(const ExtraSEI *sei,
1558                      int             sei_type,
1559                      uint8_t        *dst,
1560                      size_t          dst_size)
1561 {
1562     uint8_t *sei_start = dst;
1563     size_t remaining_sei_size = sei->size;
1564     size_t remaining_dst_size = dst_size;
1565     int header_bytes;
1566     int bytes_written;
1567     ssize_t offset;
1568
1569     if (!remaining_dst_size)
1570         return AVERROR_BUFFER_TOO_SMALL;
1571
1572     while (sei_type && remaining_dst_size != 0) {
1573         int sei_byte = sei_type > 255 ? 255 : sei_type;
1574         *dst = sei_byte;
1575
1576         sei_type -= sei_byte;
1577         dst++;
1578         remaining_dst_size--;
1579     }
1580
1581     if (!dst_size)
1582         return AVERROR_BUFFER_TOO_SMALL;
1583
1584     while (remaining_sei_size && remaining_dst_size != 0) {
1585         int size_byte = remaining_sei_size > 255 ? 255 : remaining_sei_size;
1586         *dst = size_byte;
1587
1588         remaining_sei_size -= size_byte;
1589         dst++;
1590         remaining_dst_size--;
1591     }
1592
1593     if (remaining_dst_size < sei->size)
1594         return AVERROR_BUFFER_TOO_SMALL;
1595
1596     header_bytes = dst - sei_start;
1597
1598     offset = header_bytes;
1599     bytes_written = copy_emulation_prev(sei->data,
1600                                         sei->size,
1601                                         sei_start,
1602                                         offset,
1603                                         dst_size);
1604     if (bytes_written < 0)
1605         return AVERROR_BUFFER_TOO_SMALL;
1606
1607     bytes_written += header_bytes;
1608     return bytes_written;
1609 }
1610
1611 /**
1612  * Copies NAL units and replaces length codes with
1613  * H.264 Annex B start codes. On failure, the contents of
1614  * dst_data may have been modified.
1615  *
1616  * @param length_code_size Byte length of each length code
1617  * @param sample_buffer NAL units prefixed with length codes.
1618  * @param sei Optional A53 closed captions SEI data.
1619  * @param dst_data Must be zeroed before calling this function.
1620  *                 Contains the copied NAL units prefixed with
1621  *                 start codes when the function returns
1622  *                 successfully.
1623  * @param dst_size Length of dst_data
1624  * @return 0 on success
1625  *         AVERROR_INVALIDDATA if length_code_size is invalid
1626  *         AVERROR_BUFFER_TOO_SMALL if dst_data is too small
1627  *         or if a length_code in src_data specifies data beyond
1628  *         the end of its buffer.
1629  */
1630 static int copy_replace_length_codes(
1631     AVCodecContext *avctx,
1632     size_t        length_code_size,
1633     CMSampleBufferRef sample_buffer,
1634     ExtraSEI      *sei,
1635     uint8_t       *dst_data,
1636     size_t        dst_size)
1637 {
1638     size_t src_size = CMSampleBufferGetTotalSampleSize(sample_buffer);
1639     size_t remaining_src_size = src_size;
1640     size_t remaining_dst_size = dst_size;
1641     size_t src_offset = 0;
1642     int wrote_sei = 0;
1643     int status;
1644     uint8_t size_buf[4];
1645     uint8_t nal_type;
1646     CMBlockBufferRef block = CMSampleBufferGetDataBuffer(sample_buffer);
1647
1648     if (length_code_size > 4) {
1649         return AVERROR_INVALIDDATA;
1650     }
1651
1652     while (remaining_src_size > 0) {
1653         size_t curr_src_len;
1654         size_t curr_dst_len;
1655         size_t box_len = 0;
1656         size_t i;
1657
1658         uint8_t       *dst_box;
1659
1660         status = CMBlockBufferCopyDataBytes(block,
1661                                             src_offset,
1662                                             length_code_size,
1663                                             size_buf);
1664         if (status) {
1665             av_log(avctx, AV_LOG_ERROR, "Cannot copy length: %d\n", status);
1666             return AVERROR_EXTERNAL;
1667         }
1668
1669         status = CMBlockBufferCopyDataBytes(block,
1670                                             src_offset + length_code_size,
1671                                             1,
1672                                             &nal_type);
1673
1674         if (status) {
1675             av_log(avctx, AV_LOG_ERROR, "Cannot copy type: %d\n", status);
1676             return AVERROR_EXTERNAL;
1677         }
1678
1679         nal_type &= 0x1F;
1680
1681         for (i = 0; i < length_code_size; i++) {
1682             box_len <<= 8;
1683             box_len |= size_buf[i];
1684         }
1685
1686         if (sei && !wrote_sei && is_post_sei_nal_type(nal_type)) {
1687             //No SEI NAL unit - insert.
1688             int wrote_bytes;
1689
1690             memcpy(dst_data, start_code, sizeof(start_code));
1691             dst_data += sizeof(start_code);
1692             remaining_dst_size -= sizeof(start_code);
1693
1694             *dst_data = H264_NAL_SEI;
1695             dst_data++;
1696             remaining_dst_size--;
1697
1698             wrote_bytes = write_sei(sei,
1699                                     H264_SEI_TYPE_USER_DATA_REGISTERED,
1700                                     dst_data,
1701                                     remaining_dst_size);
1702
1703             if (wrote_bytes < 0)
1704                 return wrote_bytes;
1705
1706             remaining_dst_size -= wrote_bytes;
1707             dst_data += wrote_bytes;
1708
1709             if (remaining_dst_size <= 0)
1710                 return AVERROR_BUFFER_TOO_SMALL;
1711
1712             *dst_data = 0x80;
1713
1714             dst_data++;
1715             remaining_dst_size--;
1716
1717             wrote_sei = 1;
1718         }
1719
1720         curr_src_len = box_len + length_code_size;
1721         curr_dst_len = box_len + sizeof(start_code);
1722
1723         if (remaining_src_size < curr_src_len) {
1724             return AVERROR_BUFFER_TOO_SMALL;
1725         }
1726
1727         if (remaining_dst_size < curr_dst_len) {
1728             return AVERROR_BUFFER_TOO_SMALL;
1729         }
1730
1731         dst_box = dst_data + sizeof(start_code);
1732
1733         memcpy(dst_data, start_code, sizeof(start_code));
1734         status = CMBlockBufferCopyDataBytes(block,
1735                                             src_offset + length_code_size,
1736                                             box_len,
1737                                             dst_box);
1738
1739         if (status) {
1740             av_log(avctx, AV_LOG_ERROR, "Cannot copy data: %d\n", status);
1741             return AVERROR_EXTERNAL;
1742         }
1743
1744         if (sei && !wrote_sei && nal_type == H264_NAL_SEI) {
1745             //Found SEI NAL unit - append.
1746             int wrote_bytes;
1747             int old_sei_length;
1748             int extra_bytes;
1749             uint8_t *new_sei;
1750             old_sei_length = find_sei_end(avctx, dst_box, box_len, &new_sei);
1751             if (old_sei_length < 0)
1752                 return status;
1753
1754             wrote_bytes = write_sei(sei,
1755                                     H264_SEI_TYPE_USER_DATA_REGISTERED,
1756                                     new_sei,
1757                                     remaining_dst_size - old_sei_length);
1758             if (wrote_bytes < 0)
1759                 return wrote_bytes;
1760
1761             if (new_sei + wrote_bytes >= dst_data + remaining_dst_size)
1762                 return AVERROR_BUFFER_TOO_SMALL;
1763
1764             new_sei[wrote_bytes++] = 0x80;
1765             extra_bytes = wrote_bytes - (dst_box + box_len - new_sei);
1766
1767             dst_data += extra_bytes;
1768             remaining_dst_size -= extra_bytes;
1769
1770             wrote_sei = 1;
1771         }
1772
1773         src_offset += curr_src_len;
1774         dst_data += curr_dst_len;
1775
1776         remaining_src_size -= curr_src_len;
1777         remaining_dst_size -= curr_dst_len;
1778     }
1779
1780     return 0;
1781 }
1782
1783 /**
1784  * Returns a sufficient number of bytes to contain the sei data.
1785  * It may be greater than the minimum required.
1786  */
1787 static int get_sei_msg_bytes(const ExtraSEI* sei, int type){
1788     int copied_size;
1789     if (sei->size == 0)
1790         return 0;
1791
1792     copied_size = -copy_emulation_prev(sei->data,
1793                                        sei->size,
1794                                        NULL,
1795                                        0,
1796                                        0);
1797
1798     if ((sei->size % 255) == 0) //may result in an extra byte
1799         copied_size++;
1800
1801     return copied_size + sei->size / 255 + 1 + type / 255 + 1;
1802 }
1803
1804 static int vtenc_cm_to_avpacket(
1805     AVCodecContext    *avctx,
1806     CMSampleBufferRef sample_buffer,
1807     AVPacket          *pkt,
1808     ExtraSEI          *sei)
1809 {
1810     VTEncContext *vtctx = avctx->priv_data;
1811
1812     int     status;
1813     bool    is_key_frame;
1814     bool    add_header;
1815     size_t  length_code_size;
1816     size_t  header_size = 0;
1817     size_t  in_buf_size;
1818     size_t  out_buf_size;
1819     size_t  sei_nalu_size = 0;
1820     int64_t dts_delta;
1821     int64_t time_base_num;
1822     int nalu_count;
1823     CMTime  pts;
1824     CMTime  dts;
1825     CMVideoFormatDescriptionRef vid_fmt;
1826
1827
1828     vtenc_get_frame_info(sample_buffer, &is_key_frame);
1829     status = get_length_code_size(avctx, sample_buffer, &length_code_size);
1830     if (status) return status;
1831
1832     add_header = is_key_frame && !(avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER);
1833
1834     if (add_header) {
1835         vid_fmt = CMSampleBufferGetFormatDescription(sample_buffer);
1836         if (!vid_fmt) {
1837             av_log(avctx, AV_LOG_ERROR, "Cannot get format description.\n");
1838             return AVERROR_EXTERNAL;
1839         }
1840
1841         int status = get_params_size(avctx, vid_fmt, &header_size);
1842         if (status) return status;
1843     }
1844
1845     status = count_nalus(length_code_size, sample_buffer, &nalu_count);
1846     if(status)
1847         return status;
1848
1849     if (sei) {
1850         size_t msg_size = get_sei_msg_bytes(sei,
1851                                             H264_SEI_TYPE_USER_DATA_REGISTERED);
1852
1853         sei_nalu_size = sizeof(start_code) + 1 + msg_size + 1;
1854     }
1855
1856     in_buf_size = CMSampleBufferGetTotalSampleSize(sample_buffer);
1857     out_buf_size = header_size +
1858                    in_buf_size +
1859                    sei_nalu_size +
1860                    nalu_count * ((int)sizeof(start_code) - (int)length_code_size);
1861
1862     status = ff_alloc_packet2(avctx, pkt, out_buf_size, out_buf_size);
1863     if (status < 0)
1864         return status;
1865
1866     if (add_header) {
1867         status = copy_param_sets(avctx, vid_fmt, pkt->data, out_buf_size);
1868         if(status) return status;
1869     }
1870
1871     status = copy_replace_length_codes(
1872         avctx,
1873         length_code_size,
1874         sample_buffer,
1875         sei,
1876         pkt->data + header_size,
1877         pkt->size - header_size
1878     );
1879
1880     if (status) {
1881         av_log(avctx, AV_LOG_ERROR, "Error copying packet data: %d\n", status);
1882         return status;
1883     }
1884
1885     if (is_key_frame) {
1886         pkt->flags |= AV_PKT_FLAG_KEY;
1887     }
1888
1889     pts = CMSampleBufferGetPresentationTimeStamp(sample_buffer);
1890     dts = CMSampleBufferGetDecodeTimeStamp      (sample_buffer);
1891
1892     if (CMTIME_IS_INVALID(dts)) {
1893         if (!vtctx->has_b_frames) {
1894             dts = pts;
1895         } else {
1896             av_log(avctx, AV_LOG_ERROR, "DTS is invalid.\n");
1897             return AVERROR_EXTERNAL;
1898         }
1899     }
1900
1901     dts_delta = vtctx->dts_delta >= 0 ? vtctx->dts_delta : 0;
1902     time_base_num = avctx->time_base.num;
1903     pkt->pts = pts.value / time_base_num;
1904     pkt->dts = dts.value / time_base_num - dts_delta;
1905     pkt->size = out_buf_size;
1906
1907     return 0;
1908 }
1909
1910 /*
1911  * contiguous_buf_size is 0 if not contiguous, and the size of the buffer
1912  * containing all planes if so.
1913  */
1914 static int get_cv_pixel_info(
1915     AVCodecContext *avctx,
1916     const AVFrame  *frame,
1917     int            *color,
1918     int            *plane_count,
1919     size_t         *widths,
1920     size_t         *heights,
1921     size_t         *strides,
1922     size_t         *contiguous_buf_size)
1923 {
1924     VTEncContext *vtctx = avctx->priv_data;
1925     int av_format       = frame->format;
1926     int av_color_range  = frame->color_range;
1927     int i;
1928     int range_guessed;
1929     int status;
1930
1931     status = get_cv_pixel_format(avctx, av_format, av_color_range, color, &range_guessed);
1932     if (status) {
1933         av_log(avctx,
1934             AV_LOG_ERROR,
1935             "Could not get pixel format for color format '%s' range '%s'.\n",
1936             av_get_pix_fmt_name(av_format),
1937             av_color_range > AVCOL_RANGE_UNSPECIFIED &&
1938             av_color_range < AVCOL_RANGE_NB ?
1939                av_color_range_name(av_color_range) :
1940                "Unknown");
1941
1942         return AVERROR(EINVAL);
1943     }
1944
1945     if (range_guessed) {
1946         if (!vtctx->warned_color_range) {
1947             vtctx->warned_color_range = true;
1948             av_log(avctx,
1949                    AV_LOG_WARNING,
1950                    "Color range not set for %s. Using MPEG range.\n",
1951                    av_get_pix_fmt_name(av_format));
1952         }
1953     }
1954
1955     switch (av_format) {
1956     case AV_PIX_FMT_NV12:
1957         *plane_count = 2;
1958
1959         widths [0] = avctx->width;
1960         heights[0] = avctx->height;
1961         strides[0] = frame ? frame->linesize[0] : avctx->width;
1962
1963         widths [1] = (avctx->width  + 1) / 2;
1964         heights[1] = (avctx->height + 1) / 2;
1965         strides[1] = frame ? frame->linesize[1] : (avctx->width + 1) & -2;
1966         break;
1967
1968     case AV_PIX_FMT_YUV420P:
1969         *plane_count = 3;
1970
1971         widths [0] = avctx->width;
1972         heights[0] = avctx->height;
1973         strides[0] = frame ? frame->linesize[0] : avctx->width;
1974
1975         widths [1] = (avctx->width  + 1) / 2;
1976         heights[1] = (avctx->height + 1) / 2;
1977         strides[1] = frame ? frame->linesize[1] : (avctx->width + 1) / 2;
1978
1979         widths [2] = (avctx->width  + 1) / 2;
1980         heights[2] = (avctx->height + 1) / 2;
1981         strides[2] = frame ? frame->linesize[2] : (avctx->width + 1) / 2;
1982         break;
1983
1984     default:
1985         av_log(
1986                avctx,
1987                AV_LOG_ERROR,
1988                "Could not get frame format info for color %d range %d.\n",
1989                av_format,
1990                av_color_range);
1991
1992         return AVERROR(EINVAL);
1993     }
1994
1995     *contiguous_buf_size = 0;
1996     for (i = 0; i < *plane_count; i++) {
1997         if (i < *plane_count - 1 &&
1998             frame->data[i] + strides[i] * heights[i] != frame->data[i + 1]) {
1999             *contiguous_buf_size = 0;
2000             break;
2001         }
2002
2003         *contiguous_buf_size += strides[i] * heights[i];
2004     }
2005
2006     return 0;
2007 }
2008
2009 #if !TARGET_OS_IPHONE
2010 //Not used on iOS - frame is always copied.
2011 static void free_avframe(
2012     void       *release_ctx,
2013     const void *data,
2014     size_t      size,
2015     size_t      plane_count,
2016     const void *plane_addresses[])
2017 {
2018     AVFrame *frame = release_ctx;
2019     av_frame_free(&frame);
2020 }
2021 #else
2022 //Not used on OSX - frame is never copied.
2023 static int copy_avframe_to_pixel_buffer(AVCodecContext   *avctx,
2024                                         const AVFrame    *frame,
2025                                         CVPixelBufferRef cv_img,
2026                                         const size_t     *plane_strides,
2027                                         const size_t     *plane_rows)
2028 {
2029     int i, j;
2030     size_t plane_count;
2031     int status;
2032     int rows;
2033     int src_stride;
2034     int dst_stride;
2035     uint8_t *src_addr;
2036     uint8_t *dst_addr;
2037     size_t copy_bytes;
2038
2039     status = CVPixelBufferLockBaseAddress(cv_img, 0);
2040     if (status) {
2041         av_log(
2042             avctx,
2043             AV_LOG_ERROR,
2044             "Error: Could not lock base address of CVPixelBuffer: %d.\n",
2045             status
2046         );
2047     }
2048
2049     if (CVPixelBufferIsPlanar(cv_img)) {
2050         plane_count = CVPixelBufferGetPlaneCount(cv_img);
2051         for (i = 0; frame->data[i]; i++) {
2052             if (i == plane_count) {
2053                 CVPixelBufferUnlockBaseAddress(cv_img, 0);
2054                 av_log(avctx,
2055                     AV_LOG_ERROR,
2056                     "Error: different number of planes in AVFrame and CVPixelBuffer.\n"
2057                 );
2058
2059                 return AVERROR_EXTERNAL;
2060             }
2061
2062             dst_addr = (uint8_t*)CVPixelBufferGetBaseAddressOfPlane(cv_img, i);
2063             src_addr = (uint8_t*)frame->data[i];
2064             dst_stride = CVPixelBufferGetBytesPerRowOfPlane(cv_img, i);
2065             src_stride = plane_strides[i];
2066             rows = plane_rows[i];
2067
2068             if (dst_stride == src_stride) {
2069                 memcpy(dst_addr, src_addr, src_stride * rows);
2070             } else {
2071                 copy_bytes = dst_stride < src_stride ? dst_stride : src_stride;
2072
2073                 for (j = 0; j < rows; j++) {
2074                     memcpy(dst_addr + j * dst_stride, src_addr + j * src_stride, copy_bytes);
2075                 }
2076             }
2077         }
2078     } else {
2079         if (frame->data[1]) {
2080             CVPixelBufferUnlockBaseAddress(cv_img, 0);
2081             av_log(avctx,
2082                 AV_LOG_ERROR,
2083                 "Error: different number of planes in AVFrame and non-planar CVPixelBuffer.\n"
2084             );
2085
2086             return AVERROR_EXTERNAL;
2087         }
2088
2089         dst_addr = (uint8_t*)CVPixelBufferGetBaseAddress(cv_img);
2090         src_addr = (uint8_t*)frame->data[0];
2091         dst_stride = CVPixelBufferGetBytesPerRow(cv_img);
2092         src_stride = plane_strides[0];
2093         rows = plane_rows[0];
2094
2095         if (dst_stride == src_stride) {
2096             memcpy(dst_addr, src_addr, src_stride * rows);
2097         } else {
2098             copy_bytes = dst_stride < src_stride ? dst_stride : src_stride;
2099
2100             for (j = 0; j < rows; j++) {
2101                 memcpy(dst_addr + j * dst_stride, src_addr + j * src_stride, copy_bytes);
2102             }
2103         }
2104     }
2105
2106     status = CVPixelBufferUnlockBaseAddress(cv_img, 0);
2107     if (status) {
2108         av_log(avctx, AV_LOG_ERROR, "Error: Could not unlock CVPixelBuffer base address: %d.\n", status);
2109         return AVERROR_EXTERNAL;
2110     }
2111
2112     return 0;
2113 }
2114 #endif //!TARGET_OS_IPHONE
2115
2116 static int create_cv_pixel_buffer(AVCodecContext   *avctx,
2117                                   const AVFrame    *frame,
2118                                   CVPixelBufferRef *cv_img)
2119 {
2120     int plane_count;
2121     int color;
2122     size_t widths [AV_NUM_DATA_POINTERS];
2123     size_t heights[AV_NUM_DATA_POINTERS];
2124     size_t strides[AV_NUM_DATA_POINTERS];
2125     int status;
2126     size_t contiguous_buf_size;
2127 #if TARGET_OS_IPHONE
2128     CVPixelBufferPoolRef pix_buf_pool;
2129     VTEncContext* vtctx = avctx->priv_data;
2130 #else
2131     CFMutableDictionaryRef pix_buf_attachments = CFDictionaryCreateMutable(
2132                                                    kCFAllocatorDefault,
2133                                                    10,
2134                                                    &kCFCopyStringDictionaryKeyCallBacks,
2135                                                    &kCFTypeDictionaryValueCallBacks);
2136
2137     if (!pix_buf_attachments) return AVERROR(ENOMEM);
2138 #endif
2139
2140     if (avctx->pix_fmt == AV_PIX_FMT_VIDEOTOOLBOX) {
2141         av_assert0(frame->format == AV_PIX_FMT_VIDEOTOOLBOX);
2142
2143         *cv_img = (CVPixelBufferRef)frame->data[3];
2144         av_assert0(*cv_img);
2145
2146         CFRetain(*cv_img);
2147         return 0;
2148     }
2149
2150     memset(widths,  0, sizeof(widths));
2151     memset(heights, 0, sizeof(heights));
2152     memset(strides, 0, sizeof(strides));
2153
2154     status = get_cv_pixel_info(
2155         avctx,
2156         frame,
2157         &color,
2158         &plane_count,
2159         widths,
2160         heights,
2161         strides,
2162         &contiguous_buf_size
2163     );
2164
2165     if (status) {
2166         av_log(
2167             avctx,
2168             AV_LOG_ERROR,
2169             "Error: Cannot convert format %d color_range %d: %d\n",
2170             frame->format,
2171             frame->color_range,
2172             status
2173         );
2174
2175         return AVERROR_EXTERNAL;
2176     }
2177
2178 #if TARGET_OS_IPHONE
2179     pix_buf_pool = VTCompressionSessionGetPixelBufferPool(vtctx->session);
2180     if (!pix_buf_pool) {
2181         /* On iOS, the VT session is invalidated when the APP switches from
2182          * foreground to background and vice versa. Fetch the actual error code
2183          * of the VT session to detect that case and restart the VT session
2184          * accordingly. */
2185         OSStatus vtstatus;
2186
2187         vtstatus = VTCompressionSessionPrepareToEncodeFrames(vtctx->session);
2188         if (vtstatus == kVTInvalidSessionErr) {
2189             CFRelease(vtctx->session);
2190             vtctx->session = NULL;
2191             status = vtenc_configure_encoder(avctx);
2192             if (status == 0)
2193                 pix_buf_pool = VTCompressionSessionGetPixelBufferPool(vtctx->session);
2194         }
2195         if (!pix_buf_pool) {
2196             av_log(avctx, AV_LOG_ERROR, "Could not get pixel buffer pool.\n");
2197             return AVERROR_EXTERNAL;
2198         }
2199         else
2200             av_log(avctx, AV_LOG_WARNING, "VT session restarted because of a "
2201                    "kVTInvalidSessionErr error.\n");
2202     }
2203
2204     status = CVPixelBufferPoolCreatePixelBuffer(NULL,
2205                                                 pix_buf_pool,
2206                                                 cv_img);
2207
2208
2209     if (status) {
2210         av_log(avctx, AV_LOG_ERROR, "Could not create pixel buffer from pool: %d.\n", status);
2211         return AVERROR_EXTERNAL;
2212     }
2213
2214     status = copy_avframe_to_pixel_buffer(avctx, frame, *cv_img, strides, heights);
2215     if (status) {
2216         CFRelease(*cv_img);
2217         *cv_img = NULL;
2218         return status;
2219     }
2220 #else
2221     AVFrame *enc_frame = av_frame_alloc();
2222     if (!enc_frame) return AVERROR(ENOMEM);
2223
2224     status = av_frame_ref(enc_frame, frame);
2225     if (status) {
2226         av_frame_free(&enc_frame);
2227         return status;
2228     }
2229
2230     status = CVPixelBufferCreateWithPlanarBytes(
2231         kCFAllocatorDefault,
2232         enc_frame->width,
2233         enc_frame->height,
2234         color,
2235         NULL,
2236         contiguous_buf_size,
2237         plane_count,
2238         (void **)enc_frame->data,
2239         widths,
2240         heights,
2241         strides,
2242         free_avframe,
2243         enc_frame,
2244         NULL,
2245         cv_img
2246     );
2247
2248     add_color_attr(avctx, pix_buf_attachments);
2249     CVBufferSetAttachments(*cv_img, pix_buf_attachments, kCVAttachmentMode_ShouldPropagate);
2250     CFRelease(pix_buf_attachments);
2251
2252     if (status) {
2253         av_log(avctx, AV_LOG_ERROR, "Error: Could not create CVPixelBuffer: %d\n", status);
2254         return AVERROR_EXTERNAL;
2255     }
2256 #endif
2257
2258     return 0;
2259 }
2260
2261 static int create_encoder_dict_h264(const AVFrame *frame,
2262                                     CFDictionaryRef* dict_out)
2263 {
2264     CFDictionaryRef dict = NULL;
2265     if (frame->pict_type == AV_PICTURE_TYPE_I) {
2266         const void *keys[] = { kVTEncodeFrameOptionKey_ForceKeyFrame };
2267         const void *vals[] = { kCFBooleanTrue };
2268
2269         dict = CFDictionaryCreate(NULL, keys, vals, 1, NULL, NULL);
2270         if(!dict) return AVERROR(ENOMEM);
2271     }
2272
2273     *dict_out = dict;
2274     return 0;
2275 }
2276
2277 static int vtenc_send_frame(AVCodecContext *avctx,
2278                             VTEncContext   *vtctx,
2279                             const AVFrame  *frame)
2280 {
2281     CMTime time;
2282     CFDictionaryRef frame_dict;
2283     CVPixelBufferRef cv_img = NULL;
2284     AVFrameSideData *side_data = NULL;
2285     ExtraSEI *sei = NULL;
2286     int status = create_cv_pixel_buffer(avctx, frame, &cv_img);
2287
2288     if (status) return status;
2289
2290     status = create_encoder_dict_h264(frame, &frame_dict);
2291     if (status) {
2292         CFRelease(cv_img);
2293         return status;
2294     }
2295
2296     side_data = av_frame_get_side_data(frame, AV_FRAME_DATA_A53_CC);
2297     if (vtctx->a53_cc && side_data && side_data->size) {
2298         sei = av_mallocz(sizeof(*sei));
2299         if (!sei) {
2300             av_log(avctx, AV_LOG_ERROR, "Not enough memory for closed captions, skipping\n");
2301         } else {
2302             int ret = ff_alloc_a53_sei(frame, 0, &sei->data, &sei->size);
2303             if (ret < 0) {
2304                 av_log(avctx, AV_LOG_ERROR, "Not enough memory for closed captions, skipping\n");
2305                 av_free(sei);
2306                 sei = NULL;
2307             }
2308         }
2309     }
2310
2311     time = CMTimeMake(frame->pts * avctx->time_base.num, avctx->time_base.den);
2312     status = VTCompressionSessionEncodeFrame(
2313         vtctx->session,
2314         cv_img,
2315         time,
2316         kCMTimeInvalid,
2317         frame_dict,
2318         sei,
2319         NULL
2320     );
2321
2322     if (frame_dict) CFRelease(frame_dict);
2323     CFRelease(cv_img);
2324
2325     if (status) {
2326         av_log(avctx, AV_LOG_ERROR, "Error: cannot encode frame: %d\n", status);
2327         return AVERROR_EXTERNAL;
2328     }
2329
2330     return 0;
2331 }
2332
2333 static av_cold int vtenc_frame(
2334     AVCodecContext *avctx,
2335     AVPacket       *pkt,
2336     const AVFrame  *frame,
2337     int            *got_packet)
2338 {
2339     VTEncContext *vtctx = avctx->priv_data;
2340     bool get_frame;
2341     int status;
2342     CMSampleBufferRef buf = NULL;
2343     ExtraSEI *sei = NULL;
2344
2345     if (frame) {
2346         status = vtenc_send_frame(avctx, vtctx, frame);
2347
2348         if (status) {
2349             status = AVERROR_EXTERNAL;
2350             goto end_nopkt;
2351         }
2352
2353         if (vtctx->frame_ct_in == 0) {
2354             vtctx->first_pts = frame->pts;
2355         } else if(vtctx->frame_ct_in == 1 && vtctx->has_b_frames) {
2356             vtctx->dts_delta = frame->pts - vtctx->first_pts;
2357         }
2358
2359         vtctx->frame_ct_in++;
2360     } else if(!vtctx->flushing) {
2361         vtctx->flushing = true;
2362
2363         status = VTCompressionSessionCompleteFrames(vtctx->session,
2364                                                     kCMTimeIndefinite);
2365
2366         if (status) {
2367             av_log(avctx, AV_LOG_ERROR, "Error flushing frames: %d\n", status);
2368             status = AVERROR_EXTERNAL;
2369             goto end_nopkt;
2370         }
2371     }
2372
2373     *got_packet = 0;
2374     get_frame = vtctx->dts_delta >= 0 || !frame;
2375     if (!get_frame) {
2376         status = 0;
2377         goto end_nopkt;
2378     }
2379
2380     status = vtenc_q_pop(vtctx, !frame, &buf, &sei);
2381     if (status) goto end_nopkt;
2382     if (!buf)   goto end_nopkt;
2383
2384     status = vtenc_cm_to_avpacket(avctx, buf, pkt, sei);
2385     if (sei) {
2386         if (sei->data) av_free(sei->data);
2387         av_free(sei);
2388     }
2389     CFRelease(buf);
2390     if (status) goto end_nopkt;
2391
2392     *got_packet = 1;
2393     return 0;
2394
2395 end_nopkt:
2396     av_packet_unref(pkt);
2397     return status;
2398 }
2399
2400 static int vtenc_populate_extradata(AVCodecContext   *avctx,
2401                                     CMVideoCodecType codec_type,
2402                                     CFStringRef      profile_level,
2403                                     CFNumberRef      gamma_level,
2404                                     CFDictionaryRef  enc_info,
2405                                     CFDictionaryRef  pixel_buffer_info)
2406 {
2407     VTEncContext *vtctx = avctx->priv_data;
2408     AVFrame *frame = av_frame_alloc();
2409     int y_size = avctx->width * avctx->height;
2410     int chroma_size = (avctx->width / 2) * (avctx->height / 2);
2411     CMSampleBufferRef buf = NULL;
2412     int status;
2413
2414     if (!frame)
2415         return AVERROR(ENOMEM);
2416
2417     frame->buf[0] = av_buffer_alloc(y_size + 2 * chroma_size);
2418
2419     if(!frame->buf[0]){
2420         status = AVERROR(ENOMEM);
2421         goto pe_cleanup;
2422     }
2423
2424     status = vtenc_create_encoder(avctx,
2425                                   codec_type,
2426                                   profile_level,
2427                                   gamma_level,
2428                                   enc_info,
2429                                   pixel_buffer_info,
2430                                   &vtctx->session);
2431     if (status)
2432         goto pe_cleanup;
2433
2434     frame->data[0] = frame->buf[0]->data;
2435     memset(frame->data[0],   0,      y_size);
2436
2437     frame->data[1] = frame->buf[0]->data + y_size;
2438     memset(frame->data[1], 128, chroma_size);
2439
2440
2441     if (avctx->pix_fmt == AV_PIX_FMT_YUV420P) {
2442         frame->data[2] = frame->buf[0]->data + y_size + chroma_size;
2443         memset(frame->data[2], 128, chroma_size);
2444     }
2445
2446     frame->linesize[0] = avctx->width;
2447
2448     if (avctx->pix_fmt == AV_PIX_FMT_YUV420P) {
2449         frame->linesize[1] =
2450         frame->linesize[2] = (avctx->width + 1) / 2;
2451     } else {
2452         frame->linesize[1] = (avctx->width + 1) / 2;
2453     }
2454
2455     frame->format          = avctx->pix_fmt;
2456     frame->width           = avctx->width;
2457     frame->height          = avctx->height;
2458     frame->colorspace      = avctx->colorspace;
2459     frame->color_range     = avctx->color_range;
2460     frame->color_trc       = avctx->color_trc;
2461     frame->color_primaries = avctx->color_primaries;
2462
2463     frame->pts = 0;
2464     status = vtenc_send_frame(avctx, vtctx, frame);
2465     if (status) {
2466         av_log(avctx, AV_LOG_ERROR, "Error sending frame: %d\n", status);
2467         goto pe_cleanup;
2468     }
2469
2470     //Populates extradata - output frames are flushed and param sets are available.
2471     status = VTCompressionSessionCompleteFrames(vtctx->session,
2472                                                 kCMTimeIndefinite);
2473
2474     if (status)
2475         goto pe_cleanup;
2476
2477     status = vtenc_q_pop(vtctx, 0, &buf, NULL);
2478     if (status) {
2479         av_log(avctx, AV_LOG_ERROR, "popping: %d\n", status);
2480         goto pe_cleanup;
2481     }
2482
2483     CFRelease(buf);
2484
2485
2486
2487 pe_cleanup:
2488     if(vtctx->session)
2489         CFRelease(vtctx->session);
2490
2491     vtctx->session = NULL;
2492     vtctx->frame_ct_out = 0;
2493
2494     av_frame_unref(frame);
2495     av_frame_free(&frame);
2496
2497     av_assert0(status != 0 || (avctx->extradata && avctx->extradata_size > 0));
2498
2499     return status;
2500 }
2501
2502 static av_cold int vtenc_close(AVCodecContext *avctx)
2503 {
2504     VTEncContext *vtctx = avctx->priv_data;
2505
2506     pthread_cond_destroy(&vtctx->cv_sample_sent);
2507     pthread_mutex_destroy(&vtctx->lock);
2508
2509     if(!vtctx->session) return 0;
2510
2511     VTCompressionSessionCompleteFrames(vtctx->session,
2512                                        kCMTimeIndefinite);
2513     clear_frame_queue(vtctx);
2514     CFRelease(vtctx->session);
2515     vtctx->session = NULL;
2516
2517     if (vtctx->color_primaries) {
2518         CFRelease(vtctx->color_primaries);
2519         vtctx->color_primaries = NULL;
2520     }
2521
2522     if (vtctx->transfer_function) {
2523         CFRelease(vtctx->transfer_function);
2524         vtctx->transfer_function = NULL;
2525     }
2526
2527     if (vtctx->ycbcr_matrix) {
2528         CFRelease(vtctx->ycbcr_matrix);
2529         vtctx->ycbcr_matrix = NULL;
2530     }
2531
2532     return 0;
2533 }
2534
2535 static const enum AVPixelFormat pix_fmts[] = {
2536     AV_PIX_FMT_VIDEOTOOLBOX,
2537     AV_PIX_FMT_NV12,
2538     AV_PIX_FMT_YUV420P,
2539     AV_PIX_FMT_NONE
2540 };
2541
2542 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
2543 #define COMMON_OPTIONS \
2544     { "allow_sw", "Allow software encoding", OFFSET(allow_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
2560     { "level", "Level", OFFSET(level), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 52, VE, "level" },
2561     { "1.3", "Level 1.3, only available with Baseline Profile", 0, AV_OPT_TYPE_CONST, { .i64 = 13 }, INT_MIN, INT_MAX, VE, "level" },
2562     { "3.0", "Level 3.0", 0, AV_OPT_TYPE_CONST, { .i64 = 30 }, INT_MIN, INT_MAX, VE, "level" },
2563     { "3.1", "Level 3.1", 0, AV_OPT_TYPE_CONST, { .i64 = 31 }, INT_MIN, INT_MAX, VE, "level" },
2564     { "3.2", "Level 3.2", 0, AV_OPT_TYPE_CONST, { .i64 = 32 }, INT_MIN, INT_MAX, VE, "level" },
2565     { "4.0", "Level 4.0", 0, AV_OPT_TYPE_CONST, { .i64 = 40 }, INT_MIN, INT_MAX, VE, "level" },
2566     { "4.1", "Level 4.1", 0, AV_OPT_TYPE_CONST, { .i64 = 41 }, INT_MIN, INT_MAX, VE, "level" },
2567     { "4.2", "Level 4.2", 0, AV_OPT_TYPE_CONST, { .i64 = 42 }, INT_MIN, INT_MAX, VE, "level" },
2568     { "5.0", "Level 5.0", 0, AV_OPT_TYPE_CONST, { .i64 = 50 }, INT_MIN, INT_MAX, VE, "level" },
2569     { "5.1", "Level 5.1", 0, AV_OPT_TYPE_CONST, { .i64 = 51 }, INT_MIN, INT_MAX, VE, "level" },
2570     { "5.2", "Level 5.2", 0, AV_OPT_TYPE_CONST, { .i64 = 52 }, INT_MIN, INT_MAX, VE, "level" },
2571
2572     { "coder", "Entropy coding", OFFSET(entropy), AV_OPT_TYPE_INT, { .i64 = VT_ENTROPY_NOT_SET }, VT_ENTROPY_NOT_SET, VT_CABAC, VE, "coder" },
2573     { "cavlc", "CAVLC entropy coding", 0, AV_OPT_TYPE_CONST, { .i64 = VT_CAVLC }, INT_MIN, INT_MAX, VE, "coder" },
2574     { "vlc",   "CAVLC entropy coding", 0, AV_OPT_TYPE_CONST, { .i64 = VT_CAVLC }, INT_MIN, INT_MAX, VE, "coder" },
2575     { "cabac", "CABAC entropy coding", 0, AV_OPT_TYPE_CONST, { .i64 = VT_CABAC }, INT_MIN, INT_MAX, VE, "coder" },
2576     { "ac",    "CABAC entropy coding", 0, AV_OPT_TYPE_CONST, { .i64 = VT_CABAC }, INT_MIN, INT_MAX, VE, "coder" },
2577
2578     { "a53cc", "Use A53 Closed Captions (if available)", OFFSET(a53_cc), AV_OPT_TYPE_BOOL, {.i64 = 1}, 0, 1, VE },
2579
2580     COMMON_OPTIONS
2581     { NULL },
2582 };
2583
2584 static const AVClass h264_videotoolbox_class = {
2585     .class_name = "h264_videotoolbox",
2586     .item_name  = av_default_item_name,
2587     .option     = h264_options,
2588     .version    = LIBAVUTIL_VERSION_INT,
2589 };
2590
2591 AVCodec ff_h264_videotoolbox_encoder = {
2592     .name             = "h264_videotoolbox",
2593     .long_name        = NULL_IF_CONFIG_SMALL("VideoToolbox H.264 Encoder"),
2594     .type             = AVMEDIA_TYPE_VIDEO,
2595     .id               = AV_CODEC_ID_H264,
2596     .priv_data_size   = sizeof(VTEncContext),
2597     .pix_fmts         = pix_fmts,
2598     .init             = vtenc_init,
2599     .encode2          = vtenc_frame,
2600     .close            = vtenc_close,
2601     .capabilities     = AV_CODEC_CAP_DELAY,
2602     .priv_class       = &h264_videotoolbox_class,
2603     .caps_internal    = FF_CODEC_CAP_INIT_THREADSAFE |
2604                         FF_CODEC_CAP_INIT_CLEANUP,
2605 };
2606
2607 static const AVOption hevc_options[] = {
2608     { "profile", "Profile", OFFSET(profile), AV_OPT_TYPE_INT, { .i64 = HEVC_PROF_AUTO }, HEVC_PROF_AUTO, HEVC_PROF_COUNT, VE, "profile" },
2609     { "main",     "Main Profile",     0, AV_OPT_TYPE_CONST, { .i64 = HEVC_PROF_MAIN   }, INT_MIN, INT_MAX, VE, "profile" },
2610     { "main10",   "Main10 Profile",   0, AV_OPT_TYPE_CONST, { .i64 = HEVC_PROF_MAIN10 }, INT_MIN, INT_MAX, VE, "profile" },
2611
2612     COMMON_OPTIONS
2613     { NULL },
2614 };
2615
2616 static const AVClass hevc_videotoolbox_class = {
2617     .class_name = "hevc_videotoolbox",
2618     .item_name  = av_default_item_name,
2619     .option     = hevc_options,
2620     .version    = LIBAVUTIL_VERSION_INT,
2621 };
2622
2623 AVCodec ff_hevc_videotoolbox_encoder = {
2624     .name             = "hevc_videotoolbox",
2625     .long_name        = NULL_IF_CONFIG_SMALL("VideoToolbox H.265 Encoder"),
2626     .type             = AVMEDIA_TYPE_VIDEO,
2627     .id               = AV_CODEC_ID_HEVC,
2628     .priv_data_size   = sizeof(VTEncContext),
2629     .pix_fmts         = pix_fmts,
2630     .init             = vtenc_init,
2631     .encode2          = vtenc_frame,
2632     .close            = vtenc_close,
2633     .capabilities     = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_HARDWARE,
2634     .priv_class       = &hevc_videotoolbox_class,
2635     .caps_internal    = FF_CODEC_CAP_INIT_THREADSAFE |
2636                         FF_CODEC_CAP_INIT_CLEANUP,
2637     .wrapper_name     = "videotoolbox",
2638 };