git.sesse.net Git - ffmpeg/blob - libavcodec/videotoolboxenc.c

   1 /*
   2  * copyright (c) 2015 Rick Kern <kernrj@gmail.com>
   3  *
   4  * This file is part of FFmpeg.
   5  *
   6  * FFmpeg is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * FFmpeg is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with FFmpeg; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  19  */
  20
  21 #include <VideoToolbox/VideoToolbox.h>
  22 #include <CoreVideo/CoreVideo.h>
  23 #include <CoreMedia/CoreMedia.h>
  24 #include <TargetConditionals.h>
  25 #include <Availability.h>
  26 #include "avcodec.h"
  27 #include "libavutil/opt.h"
  28 #include "libavutil/avassert.h"
  29 #include "libavutil/avstring.h"
  30 #include "libavcodec/avcodec.h"
  31 #include "libavutil/pixdesc.h"
  32 #include "internal.h"
  33 #include <pthread.h>
  34 #include "h264.h"
  35 #include "h264_sei.h"
  36 #include <dlfcn.h>
  37
  38 #if !HAVE_KCMVIDEOCODECTYPE_HEVC
  39 enum { kCMVideoCodecType_HEVC = 'hvc1' };
  40 #endif
  41
  42 #if !HAVE_KCVPIXELFORMATTYPE_420YPCBCR10BIPLANARVIDEORANGE
  43 enum { kCVPixelFormatType_420YpCbCr10BiPlanarFullRange = 'xf20' };
  44 enum { kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange = 'x420' };
  45 #endif
  46
  47 typedef OSStatus (*getParameterSetAtIndex)(CMFormatDescriptionRef videoDesc,
  48                                            size_t parameterSetIndex,
  49                                            const uint8_t **parameterSetPointerOut,
  50                                            size_t *parameterSetSizeOut,
  51                                            size_t *parameterSetCountOut,
  52                                            int *NALUnitHeaderLengthOut);
  53
  54 //These symbols may not be present
  55 static struct{
  56     CFStringRef kCVImageBufferColorPrimaries_ITU_R_2020;
  57     CFStringRef kCVImageBufferTransferFunction_ITU_R_2020;
  58     CFStringRef kCVImageBufferYCbCrMatrix_ITU_R_2020;
  59
  60     CFStringRef kVTCompressionPropertyKey_H264EntropyMode;
  61     CFStringRef kVTH264EntropyMode_CAVLC;
  62     CFStringRef kVTH264EntropyMode_CABAC;
  63
  64     CFStringRef kVTProfileLevel_H264_Baseline_4_0;
  65     CFStringRef kVTProfileLevel_H264_Baseline_4_2;
  66     CFStringRef kVTProfileLevel_H264_Baseline_5_0;
  67     CFStringRef kVTProfileLevel_H264_Baseline_5_1;
  68     CFStringRef kVTProfileLevel_H264_Baseline_5_2;
  69     CFStringRef kVTProfileLevel_H264_Baseline_AutoLevel;
  70     CFStringRef kVTProfileLevel_H264_Main_4_2;
  71     CFStringRef kVTProfileLevel_H264_Main_5_1;
  72     CFStringRef kVTProfileLevel_H264_Main_5_2;
  73     CFStringRef kVTProfileLevel_H264_Main_AutoLevel;
  74     CFStringRef kVTProfileLevel_H264_High_3_0;
  75     CFStringRef kVTProfileLevel_H264_High_3_1;
  76     CFStringRef kVTProfileLevel_H264_High_3_2;
  77     CFStringRef kVTProfileLevel_H264_High_4_0;
  78     CFStringRef kVTProfileLevel_H264_High_4_1;
  79     CFStringRef kVTProfileLevel_H264_High_4_2;
  80     CFStringRef kVTProfileLevel_H264_High_5_1;
  81     CFStringRef kVTProfileLevel_H264_High_5_2;
  82     CFStringRef kVTProfileLevel_H264_High_AutoLevel;
  83
  84     CFStringRef kVTProfileLevel_HEVC_Main_AutoLevel;
  85     CFStringRef kVTProfileLevel_HEVC_Main10_AutoLevel;
  86
  87     CFStringRef kVTCompressionPropertyKey_RealTime;
  88
  89     CFStringRef kVTVideoEncoderSpecification_EnableHardwareAcceleratedVideoEncoder;
  90     CFStringRef kVTVideoEncoderSpecification_RequireHardwareAcceleratedVideoEncoder;
  91
  92     getParameterSetAtIndex CMVideoFormatDescriptionGetHEVCParameterSetAtIndex;
  93 } compat_keys;
  94
  95 #define GET_SYM(symbol, defaultVal)                                     \
  96 do{                                                                     \
  97     CFStringRef* handle = (CFStringRef*)dlsym(RTLD_DEFAULT, #symbol);   \
  98     if(!handle)                                                         \
  99         compat_keys.symbol = CFSTR(defaultVal);                         \
 100     else                                                                \
 101         compat_keys.symbol = *handle;                                   \
 102 }while(0)
 103
 104 static pthread_once_t once_ctrl = PTHREAD_ONCE_INIT;
 105
 106 static void loadVTEncSymbols(){
 107     compat_keys.CMVideoFormatDescriptionGetHEVCParameterSetAtIndex =
 108         (getParameterSetAtIndex)dlsym(
 109             RTLD_DEFAULT,
 110             "CMVideoFormatDescriptionGetHEVCParameterSetAtIndex"
 111         );
 112
 113     GET_SYM(kCVImageBufferColorPrimaries_ITU_R_2020,   "ITU_R_2020");
 114     GET_SYM(kCVImageBufferTransferFunction_ITU_R_2020, "ITU_R_2020");
 115     GET_SYM(kCVImageBufferYCbCrMatrix_ITU_R_2020,      "ITU_R_2020");
 116
 117     GET_SYM(kVTCompressionPropertyKey_H264EntropyMode, "H264EntropyMode");
 118     GET_SYM(kVTH264EntropyMode_CAVLC, "CAVLC");
 119     GET_SYM(kVTH264EntropyMode_CABAC, "CABAC");
 120
 121     GET_SYM(kVTProfileLevel_H264_Baseline_4_0,       "H264_Baseline_4_0");
 122     GET_SYM(kVTProfileLevel_H264_Baseline_4_2,       "H264_Baseline_4_2");
 123     GET_SYM(kVTProfileLevel_H264_Baseline_5_0,       "H264_Baseline_5_0");
 124     GET_SYM(kVTProfileLevel_H264_Baseline_5_1,       "H264_Baseline_5_1");
 125     GET_SYM(kVTProfileLevel_H264_Baseline_5_2,       "H264_Baseline_5_2");
 126     GET_SYM(kVTProfileLevel_H264_Baseline_AutoLevel, "H264_Baseline_AutoLevel");
 127     GET_SYM(kVTProfileLevel_H264_Main_4_2,           "H264_Main_4_2");
 128     GET_SYM(kVTProfileLevel_H264_Main_5_1,           "H264_Main_5_1");
 129     GET_SYM(kVTProfileLevel_H264_Main_5_2,           "H264_Main_5_2");
 130     GET_SYM(kVTProfileLevel_H264_Main_AutoLevel,     "H264_Main_AutoLevel");
 131     GET_SYM(kVTProfileLevel_H264_High_3_0,           "H264_High_3_0");
 132     GET_SYM(kVTProfileLevel_H264_High_3_1,           "H264_High_3_1");
 133     GET_SYM(kVTProfileLevel_H264_High_3_2,           "H264_High_3_2");
 134     GET_SYM(kVTProfileLevel_H264_High_4_0,           "H264_High_4_0");
 135     GET_SYM(kVTProfileLevel_H264_High_4_1,           "H264_High_4_1");
 136     GET_SYM(kVTProfileLevel_H264_High_4_2,           "H264_High_4_2");
 137     GET_SYM(kVTProfileLevel_H264_High_5_1,           "H264_High_5_1");
 138     GET_SYM(kVTProfileLevel_H264_High_5_2,           "H264_High_5_2");
 139     GET_SYM(kVTProfileLevel_H264_High_AutoLevel,     "H264_High_AutoLevel");
 140
 141     GET_SYM(kVTProfileLevel_HEVC_Main_AutoLevel,     "HEVC_Main_AutoLevel");
 142     GET_SYM(kVTProfileLevel_HEVC_Main10_AutoLevel,   "HEVC_Main10_AutoLevel");
 143
 144     GET_SYM(kVTCompressionPropertyKey_RealTime, "RealTime");
 145
 146     GET_SYM(kVTVideoEncoderSpecification_EnableHardwareAcceleratedVideoEncoder,
 147             "EnableHardwareAcceleratedVideoEncoder");
 148     GET_SYM(kVTVideoEncoderSpecification_RequireHardwareAcceleratedVideoEncoder,
 149             "RequireHardwareAcceleratedVideoEncoder");
 150 }
 151
 152 typedef enum VT_H264Profile {
 153     H264_PROF_AUTO,
 154     H264_PROF_BASELINE,
 155     H264_PROF_MAIN,
 156     H264_PROF_HIGH,
 157     H264_PROF_COUNT
 158 } VT_H264Profile;
 159
 160 typedef enum VTH264Entropy{
 161     VT_ENTROPY_NOT_SET,
 162     VT_CAVLC,
 163     VT_CABAC
 164 } VTH264Entropy;
 165
 166 typedef enum VT_HEVCProfile {
 167     HEVC_PROF_AUTO,
 168     HEVC_PROF_MAIN,
 169     HEVC_PROF_MAIN10,
 170     HEVC_PROF_COUNT
 171 } VT_HEVCProfile;
 172
 173 static const uint8_t start_code[] = { 0, 0, 0, 1 };
 174
 175 typedef struct ExtraSEI {
 176   void *data;
 177   size_t size;
 178 } ExtraSEI;
 179
 180 typedef struct BufNode {
 181     CMSampleBufferRef cm_buffer;
 182     ExtraSEI *sei;
 183     struct BufNode* next;
 184     int error;
 185 } BufNode;
 186
 187 typedef struct VTEncContext {
 188     AVClass *class;
 189     enum AVCodecID codec_id;
 190     VTCompressionSessionRef session;
 191     CFStringRef ycbcr_matrix;
 192     CFStringRef color_primaries;
 193     CFStringRef transfer_function;
 194     getParameterSetAtIndex get_param_set_func;
 195
 196     pthread_mutex_t lock;
 197     pthread_cond_t  cv_sample_sent;
 198
 199     int async_error;
 200
 201     BufNode *q_head;
 202     BufNode *q_tail;
 203
 204     int64_t frame_ct_out;
 205     int64_t frame_ct_in;
 206
 207     int64_t first_pts;
 208     int64_t dts_delta;
 209
 210     int64_t profile;
 211     int64_t level;
 212     int64_t entropy;
 213     int64_t realtime;
 214     int64_t frames_before;
 215     int64_t frames_after;
 216
 217     int64_t allow_sw;
 218     int64_t require_sw;
 219
 220     bool flushing;
 221     bool has_b_frames;
 222     bool warned_color_range;
 223     bool a53_cc;
 224 } VTEncContext;
 225
 226 static int vtenc_populate_extradata(AVCodecContext   *avctx,
 227                                     CMVideoCodecType codec_type,
 228                                     CFStringRef      profile_level,
 229                                     CFNumberRef      gamma_level,
 230                                     CFDictionaryRef  enc_info,
 231                                     CFDictionaryRef  pixel_buffer_info);
 232
 233 /**
 234  * NULL-safe release of *refPtr, and sets value to NULL.
 235  */
 236 static void vt_release_num(CFNumberRef* refPtr){
 237     if (!*refPtr) {
 238         return;
 239     }
 240
 241     CFRelease(*refPtr);
 242     *refPtr = NULL;
 243 }
 244
 245 static void set_async_error(VTEncContext *vtctx, int err)
 246 {
 247     BufNode *info;
 248
 249     pthread_mutex_lock(&vtctx->lock);
 250
 251     vtctx->async_error = err;
 252
 253     info = vtctx->q_head;
 254     vtctx->q_head = vtctx->q_tail = NULL;
 255
 256     while (info) {
 257         BufNode *next = info->next;
 258         CFRelease(info->cm_buffer);
 259         av_free(info);
 260         info = next;
 261     }
 262
 263     pthread_mutex_unlock(&vtctx->lock);
 264 }
 265
 266 static void clear_frame_queue(VTEncContext *vtctx)
 267 {
 268     set_async_error(vtctx, 0);
 269 }
 270
 271 static int vtenc_q_pop(VTEncContext *vtctx, bool wait, CMSampleBufferRef *buf, ExtraSEI **sei)
 272 {
 273     BufNode *info;
 274
 275     pthread_mutex_lock(&vtctx->lock);
 276
 277     if (vtctx->async_error) {
 278         pthread_mutex_unlock(&vtctx->lock);
 279         return vtctx->async_error;
 280     }
 281
 282     if (vtctx->flushing && vtctx->frame_ct_in == vtctx->frame_ct_out) {
 283         *buf = NULL;
 284
 285         pthread_mutex_unlock(&vtctx->lock);
 286         return 0;
 287     }
 288
 289     while (!vtctx->q_head && !vtctx->async_error && wait) {
 290         pthread_cond_wait(&vtctx->cv_sample_sent, &vtctx->lock);
 291     }
 292
 293     if (!vtctx->q_head) {
 294         pthread_mutex_unlock(&vtctx->lock);
 295         *buf = NULL;
 296         return 0;
 297     }
 298
 299     info = vtctx->q_head;
 300     vtctx->q_head = vtctx->q_head->next;
 301     if (!vtctx->q_head) {
 302         vtctx->q_tail = NULL;
 303     }
 304
 305     pthread_mutex_unlock(&vtctx->lock);
 306
 307     *buf = info->cm_buffer;
 308     if (sei && *buf) {
 309         *sei = info->sei;
 310     } else if (info->sei) {
 311         if (info->sei->data) av_free(info->sei->data);
 312         av_free(info->sei);
 313     }
 314     av_free(info);
 315
 316     vtctx->frame_ct_out++;
 317
 318     return 0;
 319 }
 320
 321 static void vtenc_q_push(VTEncContext *vtctx, CMSampleBufferRef buffer, ExtraSEI *sei)
 322 {
 323     BufNode *info = av_malloc(sizeof(BufNode));
 324     if (!info) {
 325         set_async_error(vtctx, AVERROR(ENOMEM));
 326         return;
 327     }
 328
 329     CFRetain(buffer);
 330     info->cm_buffer = buffer;
 331     info->sei = sei;
 332     info->next = NULL;
 333
 334     pthread_mutex_lock(&vtctx->lock);
 335     pthread_cond_signal(&vtctx->cv_sample_sent);
 336
 337     if (!vtctx->q_head) {
 338         vtctx->q_head = info;
 339     } else {
 340         vtctx->q_tail->next = info;
 341     }
 342
 343     vtctx->q_tail = info;
 344
 345     pthread_mutex_unlock(&vtctx->lock);
 346 }
 347
 348 static int count_nalus(size_t length_code_size,
 349                        CMSampleBufferRef sample_buffer,
 350                        int *count)
 351 {
 352     size_t offset = 0;
 353     int status;
 354     int nalu_ct = 0;
 355     uint8_t size_buf[4];
 356     size_t src_size = CMSampleBufferGetTotalSampleSize(sample_buffer);
 357     CMBlockBufferRef block = CMSampleBufferGetDataBuffer(sample_buffer);
 358
 359     if (length_code_size > 4)
 360         return AVERROR_INVALIDDATA;
 361
 362     while (offset < src_size) {
 363         size_t curr_src_len;
 364         size_t box_len = 0;
 365         size_t i;
 366
 367         status = CMBlockBufferCopyDataBytes(block,
 368                                             offset,
 369                                             length_code_size,
 370                                             size_buf);
 371
 372         for (i = 0; i < length_code_size; i++) {
 373             box_len <<= 8;
 374             box_len |= size_buf[i];
 375         }
 376
 377         curr_src_len = box_len + length_code_size;
 378         offset += curr_src_len;
 379
 380         nalu_ct++;
 381     }
 382
 383     *count = nalu_ct;
 384     return 0;
 385 }
 386
 387 static CMVideoCodecType get_cm_codec_type(enum AVCodecID id)
 388 {
 389     switch (id) {
 390     case AV_CODEC_ID_H264: return kCMVideoCodecType_H264;
 391     case AV_CODEC_ID_HEVC: return kCMVideoCodecType_HEVC;
 392     default:               return 0;
 393     }
 394 }
 395
 396 /**
 397  * Get the parameter sets from a CMSampleBufferRef.
 398  * @param dst If *dst isn't NULL, the parameters are copied into existing
 399  *            memory. *dst_size must be set accordingly when *dst != NULL.
 400  *            If *dst is NULL, it will be allocated.
 401  *            In all cases, *dst_size is set to the number of bytes used starting
 402  *            at *dst.
 403  */
 404 static int get_params_size(
 405     AVCodecContext              *avctx,
 406     CMVideoFormatDescriptionRef vid_fmt,
 407     size_t                      *size)
 408 {
 409     VTEncContext *vtctx = avctx->priv_data;
 410     size_t total_size = 0;
 411     size_t ps_count;
 412     int is_count_bad = 0;
 413     size_t i;
 414     int status;
 415     status = vtctx->get_param_set_func(vid_fmt,
 416                                        0,
 417                                        NULL,
 418                                        NULL,
 419                                        &ps_count,
 420                                        NULL);
 421     if (status) {
 422         is_count_bad = 1;
 423         ps_count     = 0;
 424         status       = 0;
 425     }
 426
 427     for (i = 0; i < ps_count || is_count_bad; i++) {
 428         const uint8_t *ps;
 429         size_t ps_size;
 430         status = vtctx->get_param_set_func(vid_fmt,
 431                                            i,
 432                                            &ps,
 433                                            &ps_size,
 434                                            NULL,
 435                                            NULL);
 436         if (status) {
 437             /*
 438              * When ps_count is invalid, status != 0 ends the loop normally
 439              * unless we didn't get any parameter sets.
 440              */
 441             if (i > 0 && is_count_bad) status = 0;
 442
 443             break;
 444         }
 445
 446         total_size += ps_size + sizeof(start_code);
 447     }
 448
 449     if (status) {
 450         av_log(avctx, AV_LOG_ERROR, "Error getting parameter set sizes: %d\n", status);
 451         return AVERROR_EXTERNAL;
 452     }
 453
 454     *size = total_size;
 455     return 0;
 456 }
 457
 458 static int copy_param_sets(
 459     AVCodecContext              *avctx,
 460     CMVideoFormatDescriptionRef vid_fmt,
 461     uint8_t                     *dst,
 462     size_t                      dst_size)
 463 {
 464     VTEncContext *vtctx = avctx->priv_data;
 465     size_t ps_count;
 466     int is_count_bad = 0;
 467     int status;
 468     size_t offset = 0;
 469     size_t i;
 470
 471     status = vtctx->get_param_set_func(vid_fmt,
 472                                        0,
 473                                        NULL,
 474                                        NULL,
 475                                        &ps_count,
 476                                        NULL);
 477     if (status) {
 478         is_count_bad = 1;
 479         ps_count     = 0;
 480         status       = 0;
 481     }
 482
 483
 484     for (i = 0; i < ps_count || is_count_bad; i++) {
 485         const uint8_t *ps;
 486         size_t ps_size;
 487         size_t next_offset;
 488
 489         status = vtctx->get_param_set_func(vid_fmt,
 490                                            i,
 491                                            &ps,
 492                                            &ps_size,
 493                                            NULL,
 494                                            NULL);
 495         if (status) {
 496             if (i > 0 && is_count_bad) status = 0;
 497
 498             break;
 499         }
 500
 501         next_offset = offset + sizeof(start_code) + ps_size;
 502         if (dst_size < next_offset) {
 503             av_log(avctx, AV_LOG_ERROR, "Error: buffer too small for parameter sets.\n");
 504             return AVERROR_BUFFER_TOO_SMALL;
 505         }
 506
 507         memcpy(dst + offset, start_code, sizeof(start_code));
 508         offset += sizeof(start_code);
 509
 510         memcpy(dst + offset, ps, ps_size);
 511         offset = next_offset;
 512     }
 513
 514     if (status) {
 515         av_log(avctx, AV_LOG_ERROR, "Error getting parameter set data: %d\n", status);
 516         return AVERROR_EXTERNAL;
 517     }
 518
 519     return 0;
 520 }
 521
 522 static int set_extradata(AVCodecContext *avctx, CMSampleBufferRef sample_buffer)
 523 {
 524     CMVideoFormatDescriptionRef vid_fmt;
 525     size_t total_size;
 526     int status;
 527
 528     vid_fmt = CMSampleBufferGetFormatDescription(sample_buffer);
 529     if (!vid_fmt) {
 530         av_log(avctx, AV_LOG_ERROR, "No video format.\n");
 531         return AVERROR_EXTERNAL;
 532     }
 533
 534     status = get_params_size(avctx, vid_fmt, &total_size);
 535     if (status) {
 536         av_log(avctx, AV_LOG_ERROR, "Could not get parameter sets.\n");
 537         return status;
 538     }
 539
 540     avctx->extradata = av_mallocz(total_size + AV_INPUT_BUFFER_PADDING_SIZE);
 541     if (!avctx->extradata) {
 542         return AVERROR(ENOMEM);
 543     }
 544     avctx->extradata_size = total_size;
 545
 546     status = copy_param_sets(avctx, vid_fmt, avctx->extradata, total_size);
 547
 548     if (status) {
 549         av_log(avctx, AV_LOG_ERROR, "Could not copy param sets.\n");
 550         return status;
 551     }
 552
 553     return 0;
 554 }
 555
 556 static void vtenc_output_callback(
 557     void *ctx,
 558     void *sourceFrameCtx,
 559     OSStatus status,
 560     VTEncodeInfoFlags flags,
 561     CMSampleBufferRef sample_buffer)
 562 {
 563     AVCodecContext *avctx = ctx;
 564     VTEncContext   *vtctx = avctx->priv_data;
 565     ExtraSEI *sei = sourceFrameCtx;
 566
 567     if (vtctx->async_error) {
 568         if(sample_buffer) CFRelease(sample_buffer);
 569         return;
 570     }
 571
 572     if (status || !sample_buffer) {
 573         av_log(avctx, AV_LOG_ERROR, "Error encoding frame: %d\n", (int)status);
 574         set_async_error(vtctx, AVERROR_EXTERNAL);
 575         return;
 576     }
 577
 578     if (!avctx->extradata && (avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER)) {
 579         int set_status = set_extradata(avctx, sample_buffer);
 580         if (set_status) {
 581             set_async_error(vtctx, set_status);
 582             return;
 583         }
 584     }
 585
 586     vtenc_q_push(vtctx, sample_buffer, sei);
 587 }
 588
 589 static int get_length_code_size(
 590     AVCodecContext    *avctx,
 591     CMSampleBufferRef sample_buffer,
 592     size_t            *size)
 593 {
 594     VTEncContext *vtctx = avctx->priv_data;
 595     CMVideoFormatDescriptionRef vid_fmt;
 596     int isize;
 597     int status;
 598
 599     vid_fmt = CMSampleBufferGetFormatDescription(sample_buffer);
 600     if (!vid_fmt) {
 601         av_log(avctx, AV_LOG_ERROR, "Error getting buffer format description.\n");
 602         return AVERROR_EXTERNAL;
 603     }
 604
 605     status = vtctx->get_param_set_func(vid_fmt,
 606                                        0,
 607                                        NULL,
 608                                        NULL,
 609                                        NULL,
 610                                        &isize);
 611     if (status) {
 612         av_log(avctx, AV_LOG_ERROR, "Error getting length code size: %d\n", status);
 613         return AVERROR_EXTERNAL;
 614     }
 615
 616     *size = isize;
 617     return 0;
 618 }
 619
 620 /*
 621  * Returns true on success.
 622  *
 623  * If profile_level_val is NULL and this method returns true, don't specify the
 624  * profile/level to the encoder.
 625  */
 626 static bool get_vt_h264_profile_level(AVCodecContext *avctx,
 627                                       CFStringRef    *profile_level_val)
 628 {
 629     VTEncContext *vtctx = avctx->priv_data;
 630     int64_t profile = vtctx->profile;
 631
 632     if (profile == H264_PROF_AUTO && vtctx->level) {
 633         //Need to pick a profile if level is not auto-selected.
 634         profile = vtctx->has_b_frames ? H264_PROF_MAIN : H264_PROF_BASELINE;
 635     }
 636
 637     *profile_level_val = NULL;
 638
 639     switch (profile) {
 640         case H264_PROF_AUTO:
 641             return true;
 642
 643         case H264_PROF_BASELINE:
 644             switch (vtctx->level) {
 645                 case  0: *profile_level_val =
 646                                   compat_keys.kVTProfileLevel_H264_Baseline_AutoLevel; break;
 647                 case 13: *profile_level_val = kVTProfileLevel_H264_Baseline_1_3;       break;
 648                 case 30: *profile_level_val = kVTProfileLevel_H264_Baseline_3_0;       break;
 649                 case 31: *profile_level_val = kVTProfileLevel_H264_Baseline_3_1;       break;
 650                 case 32: *profile_level_val = kVTProfileLevel_H264_Baseline_3_2;       break;
 651                 case 40: *profile_level_val =
 652                                   compat_keys.kVTProfileLevel_H264_Baseline_4_0;       break;
 653                 case 41: *profile_level_val = kVTProfileLevel_H264_Baseline_4_1;       break;
 654                 case 42: *profile_level_val =
 655                                   compat_keys.kVTProfileLevel_H264_Baseline_4_2;       break;
 656                 case 50: *profile_level_val =
 657                                   compat_keys.kVTProfileLevel_H264_Baseline_5_0;       break;
 658                 case 51: *profile_level_val =
 659                                   compat_keys.kVTProfileLevel_H264_Baseline_5_1;       break;
 660                 case 52: *profile_level_val =
 661                                   compat_keys.kVTProfileLevel_H264_Baseline_5_2;       break;
 662             }
 663             break;
 664
 665         case H264_PROF_MAIN:
 666             switch (vtctx->level) {
 667                 case  0: *profile_level_val =
 668                                   compat_keys.kVTProfileLevel_H264_Main_AutoLevel; break;
 669                 case 30: *profile_level_val = kVTProfileLevel_H264_Main_3_0;       break;
 670                 case 31: *profile_level_val = kVTProfileLevel_H264_Main_3_1;       break;
 671                 case 32: *profile_level_val = kVTProfileLevel_H264_Main_3_2;       break;
 672                 case 40: *profile_level_val = kVTProfileLevel_H264_Main_4_0;       break;
 673                 case 41: *profile_level_val = kVTProfileLevel_H264_Main_4_1;       break;
 674                 case 42: *profile_level_val =
 675                                   compat_keys.kVTProfileLevel_H264_Main_4_2;       break;
 676                 case 50: *profile_level_val = kVTProfileLevel_H264_Main_5_0;       break;
 677                 case 51: *profile_level_val =
 678                                   compat_keys.kVTProfileLevel_H264_Main_5_1;       break;
 679                 case 52: *profile_level_val =
 680                                   compat_keys.kVTProfileLevel_H264_Main_5_2;       break;
 681             }
 682             break;
 683
 684         case H264_PROF_HIGH:
 685             switch (vtctx->level) {
 686                 case  0: *profile_level_val =
 687                                   compat_keys.kVTProfileLevel_H264_High_AutoLevel; break;
 688                 case 30: *profile_level_val =
 689                                   compat_keys.kVTProfileLevel_H264_High_3_0;       break;
 690                 case 31: *profile_level_val =
 691                                   compat_keys.kVTProfileLevel_H264_High_3_1;       break;
 692                 case 32: *profile_level_val =
 693                                   compat_keys.kVTProfileLevel_H264_High_3_2;       break;
 694                 case 40: *profile_level_val =
 695                                   compat_keys.kVTProfileLevel_H264_High_4_0;       break;
 696                 case 41: *profile_level_val =
 697                                   compat_keys.kVTProfileLevel_H264_High_4_1;       break;
 698                 case 42: *profile_level_val =
 699                                   compat_keys.kVTProfileLevel_H264_High_4_2;       break;
 700                 case 50: *profile_level_val = kVTProfileLevel_H264_High_5_0;       break;
 701                 case 51: *profile_level_val =
 702                                   compat_keys.kVTProfileLevel_H264_High_5_1;       break;
 703                 case 52: *profile_level_val =
 704                                   compat_keys.kVTProfileLevel_H264_High_5_2;       break;
 705             }
 706             break;
 707     }
 708
 709     if (!*profile_level_val) {
 710         av_log(avctx, AV_LOG_ERROR, "Invalid Profile/Level.\n");
 711         return false;
 712     }
 713
 714     return true;
 715 }
 716
 717 /*
 718  * Returns true on success.
 719  *
 720  * If profile_level_val is NULL and this method returns true, don't specify the
 721  * profile/level to the encoder.
 722  */
 723 static bool get_vt_hevc_profile_level(AVCodecContext *avctx,
 724                                       CFStringRef    *profile_level_val)
 725 {
 726     VTEncContext *vtctx = avctx->priv_data;
 727     int64_t profile = vtctx->profile;
 728
 729     *profile_level_val = NULL;
 730
 731     switch (profile) {
 732         case HEVC_PROF_AUTO:
 733             return true;
 734         case HEVC_PROF_MAIN:
 735             *profile_level_val =
 736                 compat_keys.kVTProfileLevel_HEVC_Main_AutoLevel;
 737             break;
 738         case HEVC_PROF_MAIN10:
 739             *profile_level_val =
 740                 compat_keys.kVTProfileLevel_HEVC_Main10_AutoLevel;
 741             break;
 742     }
 743
 744     if (!*profile_level_val) {
 745         av_log(avctx, AV_LOG_ERROR, "Invalid Profile/Level.\n");
 746         return false;
 747     }
 748
 749     return true;
 750 }
 751
 752 static int get_cv_pixel_format(AVCodecContext* avctx,
 753                                enum AVPixelFormat fmt,
 754                                enum AVColorRange range,
 755                                int* av_pixel_format,
 756                                int* range_guessed)
 757 {
 758     if (range_guessed) *range_guessed = range != AVCOL_RANGE_MPEG &&
 759                                         range != AVCOL_RANGE_JPEG;
 760
 761     //MPEG range is used when no range is set
 762     if (fmt == AV_PIX_FMT_NV12) {
 763         *av_pixel_format = range == AVCOL_RANGE_JPEG ?
 764                                         kCVPixelFormatType_420YpCbCr8BiPlanarFullRange :
 765                                         kCVPixelFormatType_420YpCbCr8BiPlanarVideoRange;
 766     } else if (fmt == AV_PIX_FMT_YUV420P) {
 767         *av_pixel_format = range == AVCOL_RANGE_JPEG ?
 768                                         kCVPixelFormatType_420YpCbCr8PlanarFullRange :
 769                                         kCVPixelFormatType_420YpCbCr8Planar;
 770     } else if (fmt == AV_PIX_FMT_P010LE) {
 771         *av_pixel_format = range == AVCOL_RANGE_JPEG ?
 772                                         kCVPixelFormatType_420YpCbCr10BiPlanarFullRange :
 773                                         kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange;
 774         *av_pixel_format = kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange;
 775     } else {
 776         return AVERROR(EINVAL);
 777     }
 778
 779     return 0;
 780 }
 781
 782 static void add_color_attr(AVCodecContext *avctx, CFMutableDictionaryRef dict) {
 783     VTEncContext *vtctx = avctx->priv_data;
 784
 785     if (vtctx->color_primaries) {
 786         CFDictionarySetValue(dict,
 787                              kCVImageBufferColorPrimariesKey,
 788                              vtctx->color_primaries);
 789     }
 790
 791     if (vtctx->transfer_function) {
 792         CFDictionarySetValue(dict,
 793                              kCVImageBufferTransferFunctionKey,
 794                              vtctx->transfer_function);
 795     }
 796
 797     if (vtctx->ycbcr_matrix) {
 798         CFDictionarySetValue(dict,
 799                              kCVImageBufferYCbCrMatrixKey,
 800                              vtctx->ycbcr_matrix);
 801     }
 802 }
 803
 804 static int create_cv_pixel_buffer_info(AVCodecContext* avctx,
 805                                        CFMutableDictionaryRef* dict)
 806 {
 807     CFNumberRef cv_color_format_num = NULL;
 808     CFNumberRef width_num = NULL;
 809     CFNumberRef height_num = NULL;
 810     CFMutableDictionaryRef pixel_buffer_info = NULL;
 811     int cv_color_format;
 812     int status = get_cv_pixel_format(avctx,
 813                                      avctx->pix_fmt,
 814                                      avctx->color_range,
 815                                      &cv_color_format,
 816                                      NULL);
 817     if (status) return status;
 818
 819     pixel_buffer_info = CFDictionaryCreateMutable(
 820                             kCFAllocatorDefault,
 821                             20,
 822                             &kCFCopyStringDictionaryKeyCallBacks,
 823                             &kCFTypeDictionaryValueCallBacks);
 824
 825     if (!pixel_buffer_info) goto pbinfo_nomem;
 826
 827     cv_color_format_num = CFNumberCreate(kCFAllocatorDefault,
 828                                          kCFNumberSInt32Type,
 829                                          &cv_color_format);
 830     if (!cv_color_format_num) goto pbinfo_nomem;
 831
 832     CFDictionarySetValue(pixel_buffer_info,
 833                          kCVPixelBufferPixelFormatTypeKey,
 834                          cv_color_format_num);
 835     vt_release_num(&cv_color_format_num);
 836
 837     width_num = CFNumberCreate(kCFAllocatorDefault,
 838                                kCFNumberSInt32Type,
 839                                &avctx->width);
 840     if (!width_num) return AVERROR(ENOMEM);
 841
 842     CFDictionarySetValue(pixel_buffer_info,
 843                          kCVPixelBufferWidthKey,
 844                          width_num);
 845     vt_release_num(&width_num);
 846
 847     height_num = CFNumberCreate(kCFAllocatorDefault,
 848                                 kCFNumberSInt32Type,
 849                                 &avctx->height);
 850     if (!height_num) goto pbinfo_nomem;
 851
 852     CFDictionarySetValue(pixel_buffer_info,
 853                          kCVPixelBufferHeightKey,
 854                          height_num);
 855     vt_release_num(&height_num);
 856
 857     add_color_attr(avctx, pixel_buffer_info);
 858
 859     *dict = pixel_buffer_info;
 860     return 0;
 861
 862 pbinfo_nomem:
 863     vt_release_num(&cv_color_format_num);
 864     vt_release_num(&width_num);
 865     vt_release_num(&height_num);
 866     if (pixel_buffer_info) CFRelease(pixel_buffer_info);
 867
 868     return AVERROR(ENOMEM);
 869 }
 870
 871 static int get_cv_color_primaries(AVCodecContext *avctx,
 872                                   CFStringRef *primaries)
 873 {
 874     enum AVColorPrimaries pri = avctx->color_primaries;
 875     switch (pri) {
 876         case AVCOL_PRI_UNSPECIFIED:
 877             *primaries = NULL;
 878             break;
 879
 880         case AVCOL_PRI_BT709:
 881             *primaries = kCVImageBufferColorPrimaries_ITU_R_709_2;
 882             break;
 883
 884         case AVCOL_PRI_BT2020:
 885             *primaries = compat_keys.kCVImageBufferColorPrimaries_ITU_R_2020;
 886             break;
 887
 888         default:
 889             av_log(avctx, AV_LOG_ERROR, "Color primaries %s is not supported.\n", av_color_primaries_name(pri));
 890             *primaries = NULL;
 891             return -1;
 892     }
 893
 894     return 0;
 895 }
 896
 897 static int get_cv_transfer_function(AVCodecContext *avctx,
 898                                     CFStringRef *transfer_fnc,
 899                                     CFNumberRef *gamma_level)
 900 {
 901     enum AVColorTransferCharacteristic trc = avctx->color_trc;
 902     Float32 gamma;
 903     *gamma_level = NULL;
 904
 905     switch (trc) {
 906         case AVCOL_TRC_UNSPECIFIED:
 907             *transfer_fnc = NULL;
 908             break;
 909
 910         case AVCOL_TRC_BT709:
 911             *transfer_fnc = kCVImageBufferTransferFunction_ITU_R_709_2;
 912             break;
 913
 914         case AVCOL_TRC_SMPTE240M:
 915             *transfer_fnc = kCVImageBufferTransferFunction_SMPTE_240M_1995;
 916             break;
 917
 918         case AVCOL_TRC_GAMMA22:
 919             gamma = 2.2;
 920             *transfer_fnc = kCVImageBufferTransferFunction_UseGamma;
 921             *gamma_level = CFNumberCreate(NULL, kCFNumberFloat32Type, &gamma);
 922             break;
 923
 924         case AVCOL_TRC_GAMMA28:
 925             gamma = 2.8;
 926             *transfer_fnc = kCVImageBufferTransferFunction_UseGamma;
 927             *gamma_level = CFNumberCreate(NULL, kCFNumberFloat32Type, &gamma);
 928             break;
 929
 930         case AVCOL_TRC_BT2020_10:
 931         case AVCOL_TRC_BT2020_12:
 932             *transfer_fnc = compat_keys.kCVImageBufferTransferFunction_ITU_R_2020;
 933             break;
 934
 935         default:
 936             av_log(avctx, AV_LOG_ERROR, "Transfer function %s is not supported.\n", av_color_transfer_name(trc));
 937             return -1;
 938     }
 939
 940     return 0;
 941 }
 942
 943 static int get_cv_ycbcr_matrix(AVCodecContext *avctx, CFStringRef *matrix) {
 944     switch(avctx->colorspace) {
 945         case AVCOL_SPC_BT709:
 946             *matrix = kCVImageBufferYCbCrMatrix_ITU_R_709_2;
 947             break;
 948
 949         case AVCOL_SPC_UNSPECIFIED:
 950             *matrix = NULL;
 951             break;
 952
 953         case AVCOL_SPC_BT470BG:
 954         case AVCOL_SPC_SMPTE170M:
 955             *matrix = kCVImageBufferYCbCrMatrix_ITU_R_601_4;
 956             break;
 957
 958         case AVCOL_SPC_SMPTE240M:
 959             *matrix = kCVImageBufferYCbCrMatrix_SMPTE_240M_1995;
 960             break;
 961
 962         case AVCOL_SPC_BT2020_NCL:
 963             *matrix = compat_keys.kCVImageBufferYCbCrMatrix_ITU_R_2020;
 964             break;
 965
 966         default:
 967             av_log(avctx, AV_LOG_ERROR, "Color space %s is not supported.\n", av_color_space_name(avctx->colorspace));
 968             return -1;
 969     }
 970
 971     return 0;
 972 }
 973
 974 static int vtenc_create_encoder(AVCodecContext   *avctx,
 975                                 CMVideoCodecType codec_type,
 976                                 CFStringRef      profile_level,
 977                                 CFNumberRef      gamma_level,
 978                                 CFDictionaryRef  enc_info,
 979                                 CFDictionaryRef  pixel_buffer_info,
 980                                 VTCompressionSessionRef *session)
 981 {
 982     VTEncContext *vtctx = avctx->priv_data;
 983     SInt32       bit_rate = avctx->bit_rate;
 984     SInt32       max_rate = avctx->rc_max_rate;
 985     CFNumberRef  bit_rate_num;
 986     CFNumberRef  bytes_per_second;
 987     CFNumberRef  one_second;
 988     CFArrayRef   data_rate_limits;
 989     int64_t      bytes_per_second_value = 0;
 990     int64_t      one_second_value = 0;
 991     void         *nums[2];
 992
 993     int status = VTCompressionSessionCreate(kCFAllocatorDefault,
 994                                             avctx->width,
 995                                             avctx->height,
 996                                             codec_type,
 997                                             enc_info,
 998                                             pixel_buffer_info,
 999                                             kCFAllocatorDefault,
1000                                             vtenc_output_callback,
1001                                             avctx,
1002                                             session);
1003
1004     if (status || !vtctx->session) {
1005         av_log(avctx, AV_LOG_ERROR, "Error: cannot create compression session: %d\n", status);
1006
1007 #if !TARGET_OS_IPHONE
1008         if (!vtctx->allow_sw) {
1009             av_log(avctx, AV_LOG_ERROR, "Try -allow_sw 1. The hardware encoder may be busy, or not supported.\n");
1010         }
1011 #endif
1012
1013         return AVERROR_EXTERNAL;
1014     }
1015
1016     bit_rate_num = CFNumberCreate(kCFAllocatorDefault,
1017                                   kCFNumberSInt32Type,
1018                                   &bit_rate);
1019     if (!bit_rate_num) return AVERROR(ENOMEM);
1020
1021     status = VTSessionSetProperty(vtctx->session,
1022                                   kVTCompressionPropertyKey_AverageBitRate,
1023                                   bit_rate_num);
1024     CFRelease(bit_rate_num);
1025
1026     if (status) {
1027         av_log(avctx, AV_LOG_ERROR, "Error setting bitrate property: %d\n", status);
1028         return AVERROR_EXTERNAL;
1029     }
1030
1031     if (vtctx->codec_id == AV_CODEC_ID_H264 && max_rate > 0) {
1032         // kVTCompressionPropertyKey_DataRateLimits is not available for HEVC
1033         bytes_per_second_value = max_rate >> 3;
1034         bytes_per_second = CFNumberCreate(kCFAllocatorDefault,
1035                                           kCFNumberSInt64Type,
1036                                           &bytes_per_second_value);
1037         if (!bytes_per_second) {
1038             return AVERROR(ENOMEM);
1039         }
1040         one_second_value = 1;
1041         one_second = CFNumberCreate(kCFAllocatorDefault,
1042                                     kCFNumberSInt64Type,
1043                                     &one_second_value);
1044         if (!one_second) {
1045             CFRelease(bytes_per_second);
1046             return AVERROR(ENOMEM);
1047         }
1048         nums[0] = (void *)bytes_per_second;
1049         nums[1] = (void *)one_second;
1050         data_rate_limits = CFArrayCreate(kCFAllocatorDefault,
1051                                          (const void **)nums,
1052                                          2,
1053                                          &kCFTypeArrayCallBacks);
1054
1055         if (!data_rate_limits) {
1056             CFRelease(bytes_per_second);
1057             CFRelease(one_second);
1058             return AVERROR(ENOMEM);
1059         }
1060         status = VTSessionSetProperty(vtctx->session,
1061                                       kVTCompressionPropertyKey_DataRateLimits,
1062                                       data_rate_limits);
1063
1064         CFRelease(bytes_per_second);
1065         CFRelease(one_second);
1066         CFRelease(data_rate_limits);
1067
1068         if (status) {
1069             av_log(avctx, AV_LOG_ERROR, "Error setting max bitrate property: %d\n", status);
1070             return AVERROR_EXTERNAL;
1071         }
1072     }
1073
1074     if (vtctx->codec_id == AV_CODEC_ID_H264) {
1075         // kVTCompressionPropertyKey_ProfileLevel is not available for HEVC
1076         if (profile_level) {
1077             status = VTSessionSetProperty(vtctx->session,
1078                                         kVTCompressionPropertyKey_ProfileLevel,
1079                                         profile_level);
1080             if (status) {
1081                 av_log(avctx, AV_LOG_ERROR, "Error setting profile/level property: %d\n", status);
1082             }
1083         }
1084     }
1085
1086     if (avctx->gop_size > 0) {
1087         CFNumberRef interval = CFNumberCreate(kCFAllocatorDefault,
1088                                               kCFNumberIntType,
1089                                               &avctx->gop_size);
1090         if (!interval) {
1091             return AVERROR(ENOMEM);
1092         }
1093
1094         status = VTSessionSetProperty(vtctx->session,
1095                                       kVTCompressionPropertyKey_MaxKeyFrameInterval,
1096                                       interval);
1097         CFRelease(interval);
1098
1099         if (status) {
1100             av_log(avctx, AV_LOG_ERROR, "Error setting 'max key-frame interval' property: %d\n", status);
1101             return AVERROR_EXTERNAL;
1102         }
1103     }
1104
1105     if (vtctx->frames_before) {
1106         status = VTSessionSetProperty(vtctx->session,
1107                                       kVTCompressionPropertyKey_MoreFramesBeforeStart,
1108                                       kCFBooleanTrue);
1109
1110         if (status == kVTPropertyNotSupportedErr) {
1111             av_log(avctx, AV_LOG_WARNING, "frames_before property is not supported on this device. Ignoring.\n");
1112         } else if (status) {
1113             av_log(avctx, AV_LOG_ERROR, "Error setting frames_before property: %d\n", status);
1114         }
1115     }
1116
1117     if (vtctx->frames_after) {
1118         status = VTSessionSetProperty(vtctx->session,
1119                                       kVTCompressionPropertyKey_MoreFramesAfterEnd,
1120                                       kCFBooleanTrue);
1121
1122         if (status == kVTPropertyNotSupportedErr) {
1123             av_log(avctx, AV_LOG_WARNING, "frames_after property is not supported on this device. Ignoring.\n");
1124         } else if (status) {
1125             av_log(avctx, AV_LOG_ERROR, "Error setting frames_after property: %d\n", status);
1126         }
1127     }
1128
1129     if (avctx->sample_aspect_ratio.num != 0) {
1130         CFNumberRef num;
1131         CFNumberRef den;
1132         CFMutableDictionaryRef par;
1133         AVRational *avpar = &avctx->sample_aspect_ratio;
1134
1135         av_reduce(&avpar->num, &avpar->den,
1136                    avpar->num,  avpar->den,
1137                   0xFFFFFFFF);
1138
1139         num = CFNumberCreate(kCFAllocatorDefault,
1140                              kCFNumberIntType,
1141                              &avpar->num);
1142
1143         den = CFNumberCreate(kCFAllocatorDefault,
1144                              kCFNumberIntType,
1145                              &avpar->den);
1146
1147
1148
1149         par = CFDictionaryCreateMutable(kCFAllocatorDefault,
1150                                         2,
1151                                         &kCFCopyStringDictionaryKeyCallBacks,
1152                                         &kCFTypeDictionaryValueCallBacks);
1153
1154         if (!par || !num || !den) {
1155             if (par) CFRelease(par);
1156             if (num) CFRelease(num);
1157             if (den) CFRelease(den);
1158
1159             return AVERROR(ENOMEM);
1160         }
1161
1162         CFDictionarySetValue(
1163             par,
1164             kCMFormatDescriptionKey_PixelAspectRatioHorizontalSpacing,
1165             num);
1166
1167         CFDictionarySetValue(
1168             par,
1169             kCMFormatDescriptionKey_PixelAspectRatioVerticalSpacing,
1170             den);
1171
1172         status = VTSessionSetProperty(vtctx->session,
1173                                       kVTCompressionPropertyKey_PixelAspectRatio,
1174                                       par);
1175
1176         CFRelease(par);
1177         CFRelease(num);
1178         CFRelease(den);
1179
1180         if (status) {
1181             av_log(avctx,
1182                    AV_LOG_ERROR,
1183                    "Error setting pixel aspect ratio to %d:%d: %d.\n",
1184                    avctx->sample_aspect_ratio.num,
1185                    avctx->sample_aspect_ratio.den,
1186                    status);
1187
1188             return AVERROR_EXTERNAL;
1189         }
1190     }
1191
1192
1193     if (vtctx->transfer_function) {
1194         status = VTSessionSetProperty(vtctx->session,
1195                                       kVTCompressionPropertyKey_TransferFunction,
1196                                       vtctx->transfer_function);
1197
1198         if (status) {
1199             av_log(avctx, AV_LOG_WARNING, "Could not set transfer function: %d\n", status);
1200         }
1201     }
1202
1203
1204     if (vtctx->ycbcr_matrix) {
1205         status = VTSessionSetProperty(vtctx->session,
1206                                       kVTCompressionPropertyKey_YCbCrMatrix,
1207                                       vtctx->ycbcr_matrix);
1208
1209         if (status) {
1210             av_log(avctx, AV_LOG_WARNING, "Could not set ycbcr matrix: %d\n", status);
1211         }
1212     }
1213
1214
1215     if (vtctx->color_primaries) {
1216         status = VTSessionSetProperty(vtctx->session,
1217                                       kVTCompressionPropertyKey_ColorPrimaries,
1218                                       vtctx->color_primaries);
1219
1220         if (status) {
1221             av_log(avctx, AV_LOG_WARNING, "Could not set color primaries: %d\n", status);
1222         }
1223     }
1224
1225     if (gamma_level) {
1226         status = VTSessionSetProperty(vtctx->session,
1227                                       kCVImageBufferGammaLevelKey,
1228                                       gamma_level);
1229
1230         if (status) {
1231             av_log(avctx, AV_LOG_WARNING, "Could not set gamma level: %d\n", status);
1232         }
1233     }
1234
1235     if (!vtctx->has_b_frames) {
1236         status = VTSessionSetProperty(vtctx->session,
1237                                       kVTCompressionPropertyKey_AllowFrameReordering,
1238                                       kCFBooleanFalse);
1239
1240         if (status) {
1241             av_log(avctx, AV_LOG_ERROR, "Error setting 'allow frame reordering' property: %d\n", status);
1242             return AVERROR_EXTERNAL;
1243         }
1244     }
1245
1246     if (vtctx->entropy != VT_ENTROPY_NOT_SET) {
1247         CFStringRef entropy = vtctx->entropy == VT_CABAC ?
1248                                 compat_keys.kVTH264EntropyMode_CABAC:
1249                                 compat_keys.kVTH264EntropyMode_CAVLC;
1250
1251         status = VTSessionSetProperty(vtctx->session,
1252                                       compat_keys.kVTCompressionPropertyKey_H264EntropyMode,
1253                                       entropy);
1254
1255         if (status) {
1256             av_log(avctx, AV_LOG_ERROR, "Error setting entropy property: %d\n", status);
1257         }
1258     }
1259
1260     if (vtctx->realtime) {
1261         status = VTSessionSetProperty(vtctx->session,
1262                                       compat_keys.kVTCompressionPropertyKey_RealTime,
1263                                       kCFBooleanTrue);
1264
1265         if (status) {
1266             av_log(avctx, AV_LOG_ERROR, "Error setting realtime property: %d\n", status);
1267         }
1268     }
1269
1270     status = VTCompressionSessionPrepareToEncodeFrames(vtctx->session);
1271     if (status) {
1272         av_log(avctx, AV_LOG_ERROR, "Error: cannot prepare encoder: %d\n", status);
1273         return AVERROR_EXTERNAL;
1274     }
1275
1276     return 0;
1277 }
1278
1279 static int vtenc_configure_encoder(AVCodecContext *avctx)
1280 {
1281     CFMutableDictionaryRef enc_info;
1282     CFMutableDictionaryRef pixel_buffer_info;
1283     CMVideoCodecType       codec_type;
1284     VTEncContext           *vtctx = avctx->priv_data;
1285     CFStringRef            profile_level;
1286     CFNumberRef            gamma_level = NULL;
1287     int                    status;
1288
1289     codec_type = get_cm_codec_type(avctx->codec_id);
1290     if (!codec_type) {
1291         av_log(avctx, AV_LOG_ERROR, "Error: no mapping for AVCodecID %d\n", avctx->codec_id);
1292         return AVERROR(EINVAL);
1293     }
1294
1295     vtctx->codec_id = avctx->codec_id;
1296
1297     if (vtctx->codec_id == AV_CODEC_ID_H264) {
1298         vtctx->get_param_set_func = CMVideoFormatDescriptionGetH264ParameterSetAtIndex;
1299
1300         vtctx->has_b_frames = avctx->max_b_frames > 0;
1301         if(vtctx->has_b_frames && vtctx->profile == H264_PROF_BASELINE){
1302             av_log(avctx, AV_LOG_WARNING, "Cannot use B-frames with baseline profile. Output will not contain B-frames.\n");
1303             vtctx->has_b_frames = false;
1304         }
1305
1306         if (vtctx->entropy == VT_CABAC && vtctx->profile == H264_PROF_BASELINE) {
1307             av_log(avctx, AV_LOG_WARNING, "CABAC entropy requires 'main' or 'high' profile, but baseline was requested. Encode will not use CABAC entropy.\n");
1308             vtctx->entropy = VT_ENTROPY_NOT_SET;
1309         }
1310
1311         if (!get_vt_h264_profile_level(avctx, &profile_level)) return AVERROR(EINVAL);
1312     } else {
1313         vtctx->get_param_set_func = compat_keys.CMVideoFormatDescriptionGetHEVCParameterSetAtIndex;
1314         if (!vtctx->get_param_set_func) return AVERROR(EINVAL);
1315         if (!get_vt_hevc_profile_level(avctx, &profile_level)) return AVERROR(EINVAL);
1316     }
1317
1318     enc_info = CFDictionaryCreateMutable(
1319         kCFAllocatorDefault,
1320         20,
1321         &kCFCopyStringDictionaryKeyCallBacks,
1322         &kCFTypeDictionaryValueCallBacks
1323     );
1324
1325     if (!enc_info) return AVERROR(ENOMEM);
1326
1327 #if !TARGET_OS_IPHONE
1328     if(vtctx->require_sw) {
1329         CFDictionarySetValue(enc_info,
1330                              compat_keys.kVTVideoEncoderSpecification_EnableHardwareAcceleratedVideoEncoder,
1331                              kCFBooleanFalse);
1332     } else if (!vtctx->allow_sw) {
1333         CFDictionarySetValue(enc_info,
1334                              compat_keys.kVTVideoEncoderSpecification_RequireHardwareAcceleratedVideoEncoder,
1335                              kCFBooleanTrue);
1336     } else {
1337         CFDictionarySetValue(enc_info,
1338                              compat_keys.kVTVideoEncoderSpecification_EnableHardwareAcceleratedVideoEncoder,
1339                              kCFBooleanTrue);
1340     }
1341 #endif
1342
1343     if (avctx->pix_fmt != AV_PIX_FMT_VIDEOTOOLBOX) {
1344         status = create_cv_pixel_buffer_info(avctx, &pixel_buffer_info);
1345         if (status)
1346             goto init_cleanup;
1347     } else {
1348         pixel_buffer_info = NULL;
1349     }
1350
1351     vtctx->dts_delta = vtctx->has_b_frames ? -1 : 0;
1352
1353     get_cv_transfer_function(avctx, &vtctx->transfer_function, &gamma_level);
1354     get_cv_ycbcr_matrix(avctx, &vtctx->ycbcr_matrix);
1355     get_cv_color_primaries(avctx, &vtctx->color_primaries);
1356
1357
1358     if (avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER) {
1359         status = vtenc_populate_extradata(avctx,
1360                                           codec_type,
1361                                           profile_level,
1362                                           gamma_level,
1363                                           enc_info,
1364                                           pixel_buffer_info);
1365         if (status)
1366             goto init_cleanup;
1367     }
1368
1369     status = vtenc_create_encoder(avctx,
1370                                   codec_type,
1371                                   profile_level,
1372                                   gamma_level,
1373                                   enc_info,
1374                                   pixel_buffer_info,
1375                                   &vtctx->session);
1376
1377 init_cleanup:
1378     if (gamma_level)
1379         CFRelease(gamma_level);
1380
1381     if (pixel_buffer_info)
1382         CFRelease(pixel_buffer_info);
1383
1384     CFRelease(enc_info);
1385
1386     return status;
1387 }
1388
1389 static av_cold int vtenc_init(AVCodecContext *avctx)
1390 {
1391     VTEncContext    *vtctx = avctx->priv_data;
1392     CFBooleanRef    has_b_frames_cfbool;
1393     int             status;
1394
1395     pthread_once(&once_ctrl, loadVTEncSymbols);
1396
1397     pthread_mutex_init(&vtctx->lock, NULL);
1398     pthread_cond_init(&vtctx->cv_sample_sent, NULL);
1399
1400     vtctx->session = NULL;
1401     status = vtenc_configure_encoder(avctx);
1402     if (status) return status;
1403
1404     status = VTSessionCopyProperty(vtctx->session,
1405                                    kVTCompressionPropertyKey_AllowFrameReordering,
1406                                    kCFAllocatorDefault,
1407                                    &has_b_frames_cfbool);
1408
1409     if (!status && has_b_frames_cfbool) {
1410         //Some devices don't output B-frames for main profile, even if requested.
1411         vtctx->has_b_frames = CFBooleanGetValue(has_b_frames_cfbool);
1412         CFRelease(has_b_frames_cfbool);
1413     }
1414     avctx->has_b_frames = vtctx->has_b_frames;
1415
1416     return 0;
1417 }
1418
1419 static void vtenc_get_frame_info(CMSampleBufferRef buffer, bool *is_key_frame)
1420 {
1421     CFArrayRef      attachments;
1422     CFDictionaryRef attachment;
1423     CFBooleanRef    not_sync;
1424     CFIndex         len;
1425
1426     attachments = CMSampleBufferGetSampleAttachmentsArray(buffer, false);
1427     len = !attachments ? 0 : CFArrayGetCount(attachments);
1428
1429     if (!len) {
1430         *is_key_frame = true;
1431         return;
1432     }
1433
1434     attachment = CFArrayGetValueAtIndex(attachments, 0);
1435
1436     if (CFDictionaryGetValueIfPresent(attachment,
1437                                       kCMSampleAttachmentKey_NotSync,
1438                                       (const void **)&not_sync))
1439     {
1440         *is_key_frame = !CFBooleanGetValue(not_sync);
1441     } else {
1442         *is_key_frame = true;
1443     }
1444 }
1445
1446 static int is_post_sei_nal_type(int nal_type){
1447     return nal_type != H264_NAL_SEI &&
1448            nal_type != H264_NAL_SPS &&
1449            nal_type != H264_NAL_PPS &&
1450            nal_type != H264_NAL_AUD;
1451 }
1452
1453 /*
1454  * Finds the sei message start/size of type find_sei_type.
1455  * If more than one of that type exists, the last one is returned.
1456  */
1457 static int find_sei_end(AVCodecContext *avctx,
1458                         uint8_t        *nal_data,
1459                         size_t          nal_size,
1460                         uint8_t       **sei_end)
1461 {
1462     int nal_type;
1463     size_t sei_payload_size = 0;
1464     int sei_payload_type = 0;
1465     *sei_end = NULL;
1466     uint8_t *nal_start = nal_data;
1467
1468     if (!nal_size)
1469         return 0;
1470
1471     nal_type = *nal_data & 0x1F;
1472     if (nal_type != H264_NAL_SEI)
1473         return 0;
1474
1475     nal_data++;
1476     nal_size--;
1477
1478     if (nal_data[nal_size - 1] == 0x80)
1479         nal_size--;
1480
1481     while (nal_size > 0 && *nal_data > 0) {
1482         do{
1483             sei_payload_type += *nal_data;
1484             nal_data++;
1485             nal_size--;
1486         } while (nal_size > 0 && *nal_data == 0xFF);
1487
1488         if (!nal_size) {
1489             av_log(avctx, AV_LOG_ERROR, "Unexpected end of SEI NAL Unit parsing type.\n");
1490             return AVERROR_INVALIDDATA;
1491         }
1492
1493         do{
1494             sei_payload_size += *nal_data;
1495             nal_data++;
1496             nal_size--;
1497         } while (nal_size > 0 && *nal_data == 0xFF);
1498
1499         if (nal_size < sei_payload_size) {
1500             av_log(avctx, AV_LOG_ERROR, "Unexpected end of SEI NAL Unit parsing size.\n");
1501             return AVERROR_INVALIDDATA;
1502         }
1503
1504         nal_data += sei_payload_size;
1505         nal_size -= sei_payload_size;
1506     }
1507
1508     *sei_end = nal_data;
1509
1510     return nal_data - nal_start + 1;
1511 }
1512
1513 /**
1514  * Copies the data inserting emulation prevention bytes as needed.
1515  * Existing data in the destination can be taken into account by providing
1516  * dst with a dst_offset > 0.
1517  *
1518  * @return The number of bytes copied on success. On failure, the negative of
1519  *         the number of bytes needed to copy src is returned.
1520  */
1521 static int copy_emulation_prev(const uint8_t *src,
1522                                size_t         src_size,
1523                                uint8_t       *dst,
1524                                ssize_t        dst_offset,
1525                                size_t         dst_size)
1526 {
1527     int zeros = 0;
1528     int wrote_bytes;
1529     uint8_t* dst_start;
1530     uint8_t* dst_end = dst + dst_size;
1531     const uint8_t* src_end = src + src_size;
1532     int start_at = dst_offset > 2 ? dst_offset - 2 : 0;
1533     int i;
1534     for (i = start_at; i < dst_offset && i < dst_size; i++) {
1535         if (!dst[i])
1536             zeros++;
1537         else
1538             zeros = 0;
1539     }
1540
1541     dst += dst_offset;
1542     dst_start = dst;
1543     for (; src < src_end; src++, dst++) {
1544         if (zeros == 2) {
1545             int insert_ep3_byte = *src <= 3;
1546             if (insert_ep3_byte) {
1547                 if (dst < dst_end)
1548                     *dst = 3;
1549                 dst++;
1550             }
1551
1552             zeros = 0;
1553         }
1554
1555         if (dst < dst_end)
1556             *dst = *src;
1557
1558         if (!*src)
1559             zeros++;
1560         else
1561             zeros = 0;
1562     }
1563
1564     wrote_bytes = dst - dst_start;
1565
1566     if (dst > dst_end)
1567         return -wrote_bytes;
1568
1569     return wrote_bytes;
1570 }
1571
1572 static int write_sei(const ExtraSEI *sei,
1573                      int             sei_type,
1574                      uint8_t        *dst,
1575                      size_t          dst_size)
1576 {
1577     uint8_t *sei_start = dst;
1578     size_t remaining_sei_size = sei->size;
1579     size_t remaining_dst_size = dst_size;
1580     int header_bytes;
1581     int bytes_written;
1582     ssize_t offset;
1583
1584     if (!remaining_dst_size)
1585         return AVERROR_BUFFER_TOO_SMALL;
1586
1587     while (sei_type && remaining_dst_size != 0) {
1588         int sei_byte = sei_type > 255 ? 255 : sei_type;
1589         *dst = sei_byte;
1590
1591         sei_type -= sei_byte;
1592         dst++;
1593         remaining_dst_size--;
1594     }
1595
1596     if (!dst_size)
1597         return AVERROR_BUFFER_TOO_SMALL;
1598
1599     while (remaining_sei_size && remaining_dst_size != 0) {
1600         int size_byte = remaining_sei_size > 255 ? 255 : remaining_sei_size;
1601         *dst = size_byte;
1602
1603         remaining_sei_size -= size_byte;
1604         dst++;
1605         remaining_dst_size--;
1606     }
1607
1608     if (remaining_dst_size < sei->size)
1609         return AVERROR_BUFFER_TOO_SMALL;
1610
1611     header_bytes = dst - sei_start;
1612
1613     offset = header_bytes;
1614     bytes_written = copy_emulation_prev(sei->data,
1615                                         sei->size,
1616                                         sei_start,
1617                                         offset,
1618                                         dst_size);
1619     if (bytes_written < 0)
1620         return AVERROR_BUFFER_TOO_SMALL;
1621
1622     bytes_written += header_bytes;
1623     return bytes_written;
1624 }
1625
1626 /**
1627  * Copies NAL units and replaces length codes with
1628  * H.264 Annex B start codes. On failure, the contents of
1629  * dst_data may have been modified.
1630  *
1631  * @param length_code_size Byte length of each length code
1632  * @param sample_buffer NAL units prefixed with length codes.
1633  * @param sei Optional A53 closed captions SEI data.
1634  * @param dst_data Must be zeroed before calling this function.
1635  *                 Contains the copied NAL units prefixed with
1636  *                 start codes when the function returns
1637  *                 successfully.
1638  * @param dst_size Length of dst_data
1639  * @return 0 on success
1640  *         AVERROR_INVALIDDATA if length_code_size is invalid
1641  *         AVERROR_BUFFER_TOO_SMALL if dst_data is too small
1642  *         or if a length_code in src_data specifies data beyond
1643  *         the end of its buffer.
1644  */
1645 static int copy_replace_length_codes(
1646     AVCodecContext *avctx,
1647     size_t        length_code_size,
1648     CMSampleBufferRef sample_buffer,
1649     ExtraSEI      *sei,
1650     uint8_t       *dst_data,
1651     size_t        dst_size)
1652 {
1653     size_t src_size = CMSampleBufferGetTotalSampleSize(sample_buffer);
1654     size_t remaining_src_size = src_size;
1655     size_t remaining_dst_size = dst_size;
1656     size_t src_offset = 0;
1657     int wrote_sei = 0;
1658     int status;
1659     uint8_t size_buf[4];
1660     uint8_t nal_type;
1661     CMBlockBufferRef block = CMSampleBufferGetDataBuffer(sample_buffer);
1662
1663     if (length_code_size > 4) {
1664         return AVERROR_INVALIDDATA;
1665     }
1666
1667     while (remaining_src_size > 0) {
1668         size_t curr_src_len;
1669         size_t curr_dst_len;
1670         size_t box_len = 0;
1671         size_t i;
1672
1673         uint8_t       *dst_box;
1674
1675         status = CMBlockBufferCopyDataBytes(block,
1676                                             src_offset,
1677                                             length_code_size,
1678                                             size_buf);
1679         if (status) {
1680             av_log(avctx, AV_LOG_ERROR, "Cannot copy length: %d\n", status);
1681             return AVERROR_EXTERNAL;
1682         }
1683
1684         status = CMBlockBufferCopyDataBytes(block,
1685                                             src_offset + length_code_size,
1686                                             1,
1687                                             &nal_type);
1688
1689         if (status) {
1690             av_log(avctx, AV_LOG_ERROR, "Cannot copy type: %d\n", status);
1691             return AVERROR_EXTERNAL;
1692         }
1693
1694         nal_type &= 0x1F;
1695
1696         for (i = 0; i < length_code_size; i++) {
1697             box_len <<= 8;
1698             box_len |= size_buf[i];
1699         }
1700
1701         if (sei && !wrote_sei && is_post_sei_nal_type(nal_type)) {
1702             //No SEI NAL unit - insert.
1703             int wrote_bytes;
1704
1705             memcpy(dst_data, start_code, sizeof(start_code));
1706             dst_data += sizeof(start_code);
1707             remaining_dst_size -= sizeof(start_code);
1708
1709             *dst_data = H264_NAL_SEI;
1710             dst_data++;
1711             remaining_dst_size--;
1712
1713             wrote_bytes = write_sei(sei,
1714                                     H264_SEI_TYPE_USER_DATA_REGISTERED,
1715                                     dst_data,
1716                                     remaining_dst_size);
1717
1718             if (wrote_bytes < 0)
1719                 return wrote_bytes;
1720
1721             remaining_dst_size -= wrote_bytes;
1722             dst_data += wrote_bytes;
1723
1724             if (remaining_dst_size <= 0)
1725                 return AVERROR_BUFFER_TOO_SMALL;
1726
1727             *dst_data = 0x80;
1728
1729             dst_data++;
1730             remaining_dst_size--;
1731
1732             wrote_sei = 1;
1733         }
1734
1735         curr_src_len = box_len + length_code_size;
1736         curr_dst_len = box_len + sizeof(start_code);
1737
1738         if (remaining_src_size < curr_src_len) {
1739             return AVERROR_BUFFER_TOO_SMALL;
1740         }
1741
1742         if (remaining_dst_size < curr_dst_len) {
1743             return AVERROR_BUFFER_TOO_SMALL;
1744         }
1745
1746         dst_box = dst_data + sizeof(start_code);
1747
1748         memcpy(dst_data, start_code, sizeof(start_code));
1749         status = CMBlockBufferCopyDataBytes(block,
1750                                             src_offset + length_code_size,
1751                                             box_len,
1752                                             dst_box);
1753
1754         if (status) {
1755             av_log(avctx, AV_LOG_ERROR, "Cannot copy data: %d\n", status);
1756             return AVERROR_EXTERNAL;
1757         }
1758
1759         if (sei && !wrote_sei && nal_type == H264_NAL_SEI) {
1760             //Found SEI NAL unit - append.
1761             int wrote_bytes;
1762             int old_sei_length;
1763             int extra_bytes;
1764             uint8_t *new_sei;
1765             old_sei_length = find_sei_end(avctx, dst_box, box_len, &new_sei);
1766             if (old_sei_length < 0)
1767                 return status;
1768
1769             wrote_bytes = write_sei(sei,
1770                                     H264_SEI_TYPE_USER_DATA_REGISTERED,
1771                                     new_sei,
1772                                     remaining_dst_size - old_sei_length);
1773             if (wrote_bytes < 0)
1774                 return wrote_bytes;
1775
1776             if (new_sei + wrote_bytes >= dst_data + remaining_dst_size)
1777                 return AVERROR_BUFFER_TOO_SMALL;
1778
1779             new_sei[wrote_bytes++] = 0x80;
1780             extra_bytes = wrote_bytes - (dst_box + box_len - new_sei);
1781
1782             dst_data += extra_bytes;
1783             remaining_dst_size -= extra_bytes;
1784
1785             wrote_sei = 1;
1786         }
1787
1788         src_offset += curr_src_len;
1789         dst_data += curr_dst_len;
1790
1791         remaining_src_size -= curr_src_len;
1792         remaining_dst_size -= curr_dst_len;
1793     }
1794
1795     return 0;
1796 }
1797
1798 /**
1799  * Returns a sufficient number of bytes to contain the sei data.
1800  * It may be greater than the minimum required.
1801  */
1802 static int get_sei_msg_bytes(const ExtraSEI* sei, int type){
1803     int copied_size;
1804     if (sei->size == 0)
1805         return 0;
1806
1807     copied_size = -copy_emulation_prev(sei->data,
1808                                        sei->size,
1809                                        NULL,
1810                                        0,
1811                                        0);
1812
1813     if ((sei->size % 255) == 0) //may result in an extra byte
1814         copied_size++;
1815
1816     return copied_size + sei->size / 255 + 1 + type / 255 + 1;
1817 }
1818
1819 static int vtenc_cm_to_avpacket(
1820     AVCodecContext    *avctx,
1821     CMSampleBufferRef sample_buffer,
1822     AVPacket          *pkt,
1823     ExtraSEI          *sei)
1824 {
1825     VTEncContext *vtctx = avctx->priv_data;
1826
1827     int     status;
1828     bool    is_key_frame;
1829     bool    add_header;
1830     size_t  length_code_size;
1831     size_t  header_size = 0;
1832     size_t  in_buf_size;
1833     size_t  out_buf_size;
1834     size_t  sei_nalu_size = 0;
1835     int64_t dts_delta;
1836     int64_t time_base_num;
1837     int nalu_count;
1838     CMTime  pts;
1839     CMTime  dts;
1840     CMVideoFormatDescriptionRef vid_fmt;
1841
1842
1843     vtenc_get_frame_info(sample_buffer, &is_key_frame);
1844     status = get_length_code_size(avctx, sample_buffer, &length_code_size);
1845     if (status) return status;
1846
1847     add_header = is_key_frame && !(avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER);
1848
1849     if (add_header) {
1850         vid_fmt = CMSampleBufferGetFormatDescription(sample_buffer);
1851         if (!vid_fmt) {
1852             av_log(avctx, AV_LOG_ERROR, "Cannot get format description.\n");
1853             return AVERROR_EXTERNAL;
1854         }
1855
1856         int status = get_params_size(avctx, vid_fmt, &header_size);
1857         if (status) return status;
1858     }
1859
1860     status = count_nalus(length_code_size, sample_buffer, &nalu_count);
1861     if(status)
1862         return status;
1863
1864     if (sei) {
1865         size_t msg_size = get_sei_msg_bytes(sei,
1866                                             H264_SEI_TYPE_USER_DATA_REGISTERED);
1867
1868         sei_nalu_size = sizeof(start_code) + 1 + msg_size + 1;
1869     }
1870
1871     in_buf_size = CMSampleBufferGetTotalSampleSize(sample_buffer);
1872     out_buf_size = header_size +
1873                    in_buf_size +
1874                    sei_nalu_size +
1875                    nalu_count * ((int)sizeof(start_code) - (int)length_code_size);
1876
1877     status = ff_alloc_packet2(avctx, pkt, out_buf_size, out_buf_size);
1878     if (status < 0)
1879         return status;
1880
1881     if (add_header) {
1882         status = copy_param_sets(avctx, vid_fmt, pkt->data, out_buf_size);
1883         if(status) return status;
1884     }
1885
1886     status = copy_replace_length_codes(
1887         avctx,
1888         length_code_size,
1889         sample_buffer,
1890         sei,
1891         pkt->data + header_size,
1892         pkt->size - header_size
1893     );
1894
1895     if (status) {
1896         av_log(avctx, AV_LOG_ERROR, "Error copying packet data: %d\n", status);
1897         return status;
1898     }
1899
1900     if (is_key_frame) {
1901         pkt->flags |= AV_PKT_FLAG_KEY;
1902     }
1903
1904     pts = CMSampleBufferGetPresentationTimeStamp(sample_buffer);
1905     dts = CMSampleBufferGetDecodeTimeStamp      (sample_buffer);
1906
1907     if (CMTIME_IS_INVALID(dts)) {
1908         if (!vtctx->has_b_frames) {
1909             dts = pts;
1910         } else {
1911             av_log(avctx, AV_LOG_ERROR, "DTS is invalid.\n");
1912             return AVERROR_EXTERNAL;
1913         }
1914     }
1915
1916     dts_delta = vtctx->dts_delta >= 0 ? vtctx->dts_delta : 0;
1917     time_base_num = avctx->time_base.num;
1918     pkt->pts = pts.value / time_base_num;
1919     pkt->dts = dts.value / time_base_num - dts_delta;
1920     pkt->size = out_buf_size;
1921
1922     return 0;
1923 }
1924
1925 /*
1926  * contiguous_buf_size is 0 if not contiguous, and the size of the buffer
1927  * containing all planes if so.
1928  */
1929 static int get_cv_pixel_info(
1930     AVCodecContext *avctx,
1931     const AVFrame  *frame,
1932     int            *color,
1933     int            *plane_count,
1934     size_t         *widths,
1935     size_t         *heights,
1936     size_t         *strides,
1937     size_t         *contiguous_buf_size)
1938 {
1939     VTEncContext *vtctx = avctx->priv_data;
1940     int av_format       = frame->format;
1941     int av_color_range  = frame->color_range;
1942     int i;
1943     int range_guessed;
1944     int status;
1945
1946     status = get_cv_pixel_format(avctx, av_format, av_color_range, color, &range_guessed);
1947     if (status) {
1948         av_log(avctx,
1949             AV_LOG_ERROR,
1950             "Could not get pixel format for color format '%s' range '%s'.\n",
1951             av_get_pix_fmt_name(av_format),
1952             av_color_range > AVCOL_RANGE_UNSPECIFIED &&
1953             av_color_range < AVCOL_RANGE_NB ?
1954                av_color_range_name(av_color_range) :
1955                "Unknown");
1956
1957         return AVERROR(EINVAL);
1958     }
1959
1960     if (range_guessed) {
1961         if (!vtctx->warned_color_range) {
1962             vtctx->warned_color_range = true;
1963             av_log(avctx,
1964                    AV_LOG_WARNING,
1965                    "Color range not set for %s. Using MPEG range.\n",
1966                    av_get_pix_fmt_name(av_format));
1967         }
1968     }
1969
1970     switch (av_format) {
1971     case AV_PIX_FMT_NV12:
1972         *plane_count = 2;
1973
1974         widths [0] = avctx->width;
1975         heights[0] = avctx->height;
1976         strides[0] = frame ? frame->linesize[0] : avctx->width;
1977
1978         widths [1] = (avctx->width  + 1) / 2;
1979         heights[1] = (avctx->height + 1) / 2;
1980         strides[1] = frame ? frame->linesize[1] : (avctx->width + 1) & -2;
1981         break;
1982
1983     case AV_PIX_FMT_YUV420P:
1984         *plane_count = 3;
1985
1986         widths [0] = avctx->width;
1987         heights[0] = avctx->height;
1988         strides[0] = frame ? frame->linesize[0] : avctx->width;
1989
1990         widths [1] = (avctx->width  + 1) / 2;
1991         heights[1] = (avctx->height + 1) / 2;
1992         strides[1] = frame ? frame->linesize[1] : (avctx->width + 1) / 2;
1993
1994         widths [2] = (avctx->width  + 1) / 2;
1995         heights[2] = (avctx->height + 1) / 2;
1996         strides[2] = frame ? frame->linesize[2] : (avctx->width + 1) / 2;
1997         break;
1998
1999     case AV_PIX_FMT_P010LE:
2000         *plane_count = 2;
2001         widths[0] = avctx->width;
2002         heights[0] = avctx->height;
2003         strides[0] = frame ? frame->linesize[0] : (avctx->width * 2 + 63) & -64;
2004
2005         widths[1] = (avctx->width + 1) / 2;
2006         heights[1] = (avctx->height + 1) / 2;
2007         strides[1] = frame ? frame->linesize[1] : ((avctx->width + 1) / 2 + 63) & -64;
2008         break;
2009
2010     default:
2011         av_log(
2012                avctx,
2013                AV_LOG_ERROR,
2014                "Could not get frame format info for color %d range %d.\n",
2015                av_format,
2016                av_color_range);
2017
2018         return AVERROR(EINVAL);
2019     }
2020
2021     *contiguous_buf_size = 0;
2022     for (i = 0; i < *plane_count; i++) {
2023         if (i < *plane_count - 1 &&
2024             frame->data[i] + strides[i] * heights[i] != frame->data[i + 1]) {
2025             *contiguous_buf_size = 0;
2026             break;
2027         }
2028
2029         *contiguous_buf_size += strides[i] * heights[i];
2030     }
2031
2032     return 0;
2033 }
2034
2035 //Not used on OSX - frame is never copied.
2036 static int copy_avframe_to_pixel_buffer(AVCodecContext   *avctx,
2037                                         const AVFrame    *frame,
2038                                         CVPixelBufferRef cv_img,
2039                                         const size_t     *plane_strides,
2040                                         const size_t     *plane_rows)
2041 {
2042     int i, j;
2043     size_t plane_count;
2044     int status;
2045     int rows;
2046     int src_stride;
2047     int dst_stride;
2048     uint8_t *src_addr;
2049     uint8_t *dst_addr;
2050     size_t copy_bytes;
2051
2052     status = CVPixelBufferLockBaseAddress(cv_img, 0);
2053     if (status) {
2054         av_log(
2055             avctx,
2056             AV_LOG_ERROR,
2057             "Error: Could not lock base address of CVPixelBuffer: %d.\n",
2058             status
2059         );
2060     }
2061
2062     if (CVPixelBufferIsPlanar(cv_img)) {
2063         plane_count = CVPixelBufferGetPlaneCount(cv_img);
2064         for (i = 0; frame->data[i]; i++) {
2065             if (i == plane_count) {
2066                 CVPixelBufferUnlockBaseAddress(cv_img, 0);
2067                 av_log(avctx,
2068                     AV_LOG_ERROR,
2069                     "Error: different number of planes in AVFrame and CVPixelBuffer.\n"
2070                 );
2071
2072                 return AVERROR_EXTERNAL;
2073             }
2074
2075             dst_addr = (uint8_t*)CVPixelBufferGetBaseAddressOfPlane(cv_img, i);
2076             src_addr = (uint8_t*)frame->data[i];
2077             dst_stride = CVPixelBufferGetBytesPerRowOfPlane(cv_img, i);
2078             src_stride = plane_strides[i];
2079             rows = plane_rows[i];
2080
2081             if (dst_stride == src_stride) {
2082                 memcpy(dst_addr, src_addr, src_stride * rows);
2083             } else {
2084                 copy_bytes = dst_stride < src_stride ? dst_stride : src_stride;
2085
2086                 for (j = 0; j < rows; j++) {
2087                     memcpy(dst_addr + j * dst_stride, src_addr + j * src_stride, copy_bytes);
2088                 }
2089             }
2090         }
2091     } else {
2092         if (frame->data[1]) {
2093             CVPixelBufferUnlockBaseAddress(cv_img, 0);
2094             av_log(avctx,
2095                 AV_LOG_ERROR,
2096                 "Error: different number of planes in AVFrame and non-planar CVPixelBuffer.\n"
2097             );
2098
2099             return AVERROR_EXTERNAL;
2100         }
2101
2102         dst_addr = (uint8_t*)CVPixelBufferGetBaseAddress(cv_img);
2103         src_addr = (uint8_t*)frame->data[0];
2104         dst_stride = CVPixelBufferGetBytesPerRow(cv_img);
2105         src_stride = plane_strides[0];
2106         rows = plane_rows[0];
2107
2108         if (dst_stride == src_stride) {
2109             memcpy(dst_addr, src_addr, src_stride * rows);
2110         } else {
2111             copy_bytes = dst_stride < src_stride ? dst_stride : src_stride;
2112
2113             for (j = 0; j < rows; j++) {
2114                 memcpy(dst_addr + j * dst_stride, src_addr + j * src_stride, copy_bytes);
2115             }
2116         }
2117     }
2118
2119     status = CVPixelBufferUnlockBaseAddress(cv_img, 0);
2120     if (status) {
2121         av_log(avctx, AV_LOG_ERROR, "Error: Could not unlock CVPixelBuffer base address: %d.\n", status);
2122         return AVERROR_EXTERNAL;
2123     }
2124
2125     return 0;
2126 }
2127
2128 static int create_cv_pixel_buffer(AVCodecContext   *avctx,
2129                                   const AVFrame    *frame,
2130                                   CVPixelBufferRef *cv_img)
2131 {
2132     int plane_count;
2133     int color;
2134     size_t widths [AV_NUM_DATA_POINTERS];
2135     size_t heights[AV_NUM_DATA_POINTERS];
2136     size_t strides[AV_NUM_DATA_POINTERS];
2137     int status;
2138     size_t contiguous_buf_size;
2139     CVPixelBufferPoolRef pix_buf_pool;
2140     VTEncContext* vtctx = avctx->priv_data;
2141
2142     if (avctx->pix_fmt == AV_PIX_FMT_VIDEOTOOLBOX) {
2143         av_assert0(frame->format == AV_PIX_FMT_VIDEOTOOLBOX);
2144
2145         *cv_img = (CVPixelBufferRef)frame->data[3];
2146         av_assert0(*cv_img);
2147
2148         CFRetain(*cv_img);
2149         return 0;
2150     }
2151
2152     memset(widths,  0, sizeof(widths));
2153     memset(heights, 0, sizeof(heights));
2154     memset(strides, 0, sizeof(strides));
2155
2156     status = get_cv_pixel_info(
2157         avctx,
2158         frame,
2159         &color,
2160         &plane_count,
2161         widths,
2162         heights,
2163         strides,
2164         &contiguous_buf_size
2165     );
2166
2167     if (status) {
2168         av_log(
2169             avctx,
2170             AV_LOG_ERROR,
2171             "Error: Cannot convert format %d color_range %d: %d\n",
2172             frame->format,
2173             frame->color_range,
2174             status
2175         );
2176
2177         return AVERROR_EXTERNAL;
2178     }
2179
2180     pix_buf_pool = VTCompressionSessionGetPixelBufferPool(vtctx->session);
2181     if (!pix_buf_pool) {
2182         /* On iOS, the VT session is invalidated when the APP switches from
2183          * foreground to background and vice versa. Fetch the actual error code
2184          * of the VT session to detect that case and restart the VT session
2185          * accordingly. */
2186         OSStatus vtstatus;
2187
2188         vtstatus = VTCompressionSessionPrepareToEncodeFrames(vtctx->session);
2189         if (vtstatus == kVTInvalidSessionErr) {
2190             CFRelease(vtctx->session);
2191             vtctx->session = NULL;
2192             status = vtenc_configure_encoder(avctx);
2193             if (status == 0)
2194                 pix_buf_pool = VTCompressionSessionGetPixelBufferPool(vtctx->session);
2195         }
2196         if (!pix_buf_pool) {
2197             av_log(avctx, AV_LOG_ERROR, "Could not get pixel buffer pool.\n");
2198             return AVERROR_EXTERNAL;
2199         }
2200         else
2201             av_log(avctx, AV_LOG_WARNING, "VT session restarted because of a "
2202                    "kVTInvalidSessionErr error.\n");
2203     }
2204
2205     status = CVPixelBufferPoolCreatePixelBuffer(NULL,
2206                                                 pix_buf_pool,
2207                                                 cv_img);
2208
2209
2210     if (status) {
2211         av_log(avctx, AV_LOG_ERROR, "Could not create pixel buffer from pool: %d.\n", status);
2212         return AVERROR_EXTERNAL;
2213     }
2214
2215     status = copy_avframe_to_pixel_buffer(avctx, frame, *cv_img, strides, heights);
2216     if (status) {
2217         CFRelease(*cv_img);
2218         *cv_img = NULL;
2219         return status;
2220     }
2221
2222     return 0;
2223 }
2224
2225 static int create_encoder_dict_h264(const AVFrame *frame,
2226                                     CFDictionaryRef* dict_out)
2227 {
2228     CFDictionaryRef dict = NULL;
2229     if (frame->pict_type == AV_PICTURE_TYPE_I) {
2230         const void *keys[] = { kVTEncodeFrameOptionKey_ForceKeyFrame };
2231         const void *vals[] = { kCFBooleanTrue };
2232
2233         dict = CFDictionaryCreate(NULL, keys, vals, 1, NULL, NULL);
2234         if(!dict) return AVERROR(ENOMEM);
2235     }
2236
2237     *dict_out = dict;
2238     return 0;
2239 }
2240
2241 static int vtenc_send_frame(AVCodecContext *avctx,
2242                             VTEncContext   *vtctx,
2243                             const AVFrame  *frame)
2244 {
2245     CMTime time;
2246     CFDictionaryRef frame_dict;
2247     CVPixelBufferRef cv_img = NULL;
2248     AVFrameSideData *side_data = NULL;
2249     ExtraSEI *sei = NULL;
2250     int status = create_cv_pixel_buffer(avctx, frame, &cv_img);
2251
2252     if (status) return status;
2253
2254     status = create_encoder_dict_h264(frame, &frame_dict);
2255     if (status) {
2256         CFRelease(cv_img);
2257         return status;
2258     }
2259
2260     side_data = av_frame_get_side_data(frame, AV_FRAME_DATA_A53_CC);
2261     if (vtctx->a53_cc && side_data && side_data->size) {
2262         sei = av_mallocz(sizeof(*sei));
2263         if (!sei) {
2264             av_log(avctx, AV_LOG_ERROR, "Not enough memory for closed captions, skipping\n");
2265         } else {
2266             int ret = ff_alloc_a53_sei(frame, 0, &sei->data, &sei->size);
2267             if (ret < 0) {
2268                 av_log(avctx, AV_LOG_ERROR, "Not enough memory for closed captions, skipping\n");
2269                 av_free(sei);
2270                 sei = NULL;
2271             }
2272         }
2273     }
2274
2275     time = CMTimeMake(frame->pts * avctx->time_base.num, avctx->time_base.den);
2276     status = VTCompressionSessionEncodeFrame(
2277         vtctx->session,
2278         cv_img,
2279         time,
2280         kCMTimeInvalid,
2281         frame_dict,
2282         sei,
2283         NULL
2284     );
2285
2286     if (frame_dict) CFRelease(frame_dict);
2287     CFRelease(cv_img);
2288
2289     if (status) {
2290         av_log(avctx, AV_LOG_ERROR, "Error: cannot encode frame: %d\n", status);
2291         return AVERROR_EXTERNAL;
2292     }
2293
2294     return 0;
2295 }
2296
2297 static av_cold int vtenc_frame(
2298     AVCodecContext *avctx,
2299     AVPacket       *pkt,
2300     const AVFrame  *frame,
2301     int            *got_packet)
2302 {
2303     VTEncContext *vtctx = avctx->priv_data;
2304     bool get_frame;
2305     int status;
2306     CMSampleBufferRef buf = NULL;
2307     ExtraSEI *sei = NULL;
2308
2309     if (frame) {
2310         status = vtenc_send_frame(avctx, vtctx, frame);
2311
2312         if (status) {
2313             status = AVERROR_EXTERNAL;
2314             goto end_nopkt;
2315         }
2316
2317         if (vtctx->frame_ct_in == 0) {
2318             vtctx->first_pts = frame->pts;
2319         } else if(vtctx->frame_ct_in == 1 && vtctx->has_b_frames) {
2320             vtctx->dts_delta = frame->pts - vtctx->first_pts;
2321         }
2322
2323         vtctx->frame_ct_in++;
2324     } else if(!vtctx->flushing) {
2325         vtctx->flushing = true;
2326
2327         status = VTCompressionSessionCompleteFrames(vtctx->session,
2328                                                     kCMTimeIndefinite);
2329
2330         if (status) {
2331             av_log(avctx, AV_LOG_ERROR, "Error flushing frames: %d\n", status);
2332             status = AVERROR_EXTERNAL;
2333             goto end_nopkt;
2334         }
2335     }
2336
2337     *got_packet = 0;
2338     get_frame = vtctx->dts_delta >= 0 || !frame;
2339     if (!get_frame) {
2340         status = 0;
2341         goto end_nopkt;
2342     }
2343
2344     status = vtenc_q_pop(vtctx, !frame, &buf, &sei);
2345     if (status) goto end_nopkt;
2346     if (!buf)   goto end_nopkt;
2347
2348     status = vtenc_cm_to_avpacket(avctx, buf, pkt, sei);
2349     if (sei) {
2350         if (sei->data) av_free(sei->data);
2351         av_free(sei);
2352     }
2353     CFRelease(buf);
2354     if (status) goto end_nopkt;
2355
2356     *got_packet = 1;
2357     return 0;
2358
2359 end_nopkt:
2360     av_packet_unref(pkt);
2361     return status;
2362 }
2363
2364 static int vtenc_populate_extradata(AVCodecContext   *avctx,
2365                                     CMVideoCodecType codec_type,
2366                                     CFStringRef      profile_level,
2367                                     CFNumberRef      gamma_level,
2368                                     CFDictionaryRef  enc_info,
2369                                     CFDictionaryRef  pixel_buffer_info)
2370 {
2371     VTEncContext *vtctx = avctx->priv_data;
2372     int status;
2373     CVPixelBufferPoolRef pool = NULL;
2374     CVPixelBufferRef pix_buf = NULL;
2375     CMTime time;
2376     CMSampleBufferRef buf = NULL;
2377
2378     status = vtenc_create_encoder(avctx,
2379                                   codec_type,
2380                                   profile_level,
2381                                   gamma_level,
2382                                   enc_info,
2383                                   pixel_buffer_info,
2384                                   &vtctx->session);
2385     if (status)
2386         goto pe_cleanup;
2387
2388     pool = VTCompressionSessionGetPixelBufferPool(vtctx->session);
2389     if(!pool){
2390         av_log(avctx, AV_LOG_ERROR, "Error getting pixel buffer pool.\n");
2391         goto pe_cleanup;
2392     }
2393
2394     status = CVPixelBufferPoolCreatePixelBuffer(NULL,
2395                                                 pool,
2396                                                 &pix_buf);
2397
2398     if(status != kCVReturnSuccess){
2399         av_log(avctx, AV_LOG_ERROR, "Error creating frame from pool: %d\n", status);
2400         goto pe_cleanup;
2401     }
2402
2403     unsigned pbuftype = CVPixelBufferGetPixelFormatType(pix_buf);
2404
2405     time = CMTimeMake(0, avctx->time_base.den);
2406     status = VTCompressionSessionEncodeFrame(vtctx->session,
2407                                              pix_buf,
2408                                              time,
2409                                              kCMTimeInvalid,
2410                                              NULL,
2411                                              NULL,
2412                                              NULL);
2413
2414     if (status) {
2415         av_log(avctx,
2416                AV_LOG_ERROR,
2417                "Error sending frame for extradata: %d\n",
2418                status);
2419
2420         goto pe_cleanup;
2421     }
2422
2423     //Populates extradata - output frames are flushed and param sets are available.
2424     status = VTCompressionSessionCompleteFrames(vtctx->session,
2425                                                 kCMTimeIndefinite);
2426
2427     if (status)
2428         goto pe_cleanup;
2429
2430     status = vtenc_q_pop(vtctx, 0, &buf, NULL);
2431     if (status) {
2432         av_log(avctx, AV_LOG_ERROR, "popping: %d\n", status);
2433         goto pe_cleanup;
2434     }
2435
2436     CFRelease(buf);
2437
2438
2439
2440 pe_cleanup:
2441     if(vtctx->session)
2442         CFRelease(vtctx->session);
2443
2444     vtctx->session = NULL;
2445     vtctx->frame_ct_out = 0;
2446
2447     av_assert0(status != 0 || (avctx->extradata && avctx->extradata_size > 0));
2448
2449     return status;
2450 }
2451
2452 static av_cold int vtenc_close(AVCodecContext *avctx)
2453 {
2454     VTEncContext *vtctx = avctx->priv_data;
2455
2456     pthread_cond_destroy(&vtctx->cv_sample_sent);
2457     pthread_mutex_destroy(&vtctx->lock);
2458
2459     if(!vtctx->session) return 0;
2460
2461     VTCompressionSessionCompleteFrames(vtctx->session,
2462                                        kCMTimeIndefinite);
2463     clear_frame_queue(vtctx);
2464     CFRelease(vtctx->session);
2465     vtctx->session = NULL;
2466
2467     if (vtctx->color_primaries) {
2468         CFRelease(vtctx->color_primaries);
2469         vtctx->color_primaries = NULL;
2470     }
2471
2472     if (vtctx->transfer_function) {
2473         CFRelease(vtctx->transfer_function);
2474         vtctx->transfer_function = NULL;
2475     }
2476
2477     if (vtctx->ycbcr_matrix) {
2478         CFRelease(vtctx->ycbcr_matrix);
2479         vtctx->ycbcr_matrix = NULL;
2480     }
2481
2482     return 0;
2483 }
2484
2485 static const enum AVPixelFormat avc_pix_fmts[] = {
2486     AV_PIX_FMT_VIDEOTOOLBOX,
2487     AV_PIX_FMT_NV12,
2488     AV_PIX_FMT_YUV420P,
2489     AV_PIX_FMT_NONE
2490 };
2491
2492 static const enum AVPixelFormat hevc_pix_fmts[] = {
2493     AV_PIX_FMT_VIDEOTOOLBOX,
2494     AV_PIX_FMT_NV12,
2495     AV_PIX_FMT_YUV420P,
2496     AV_PIX_FMT_P010LE,
2497     AV_PIX_FMT_NONE
2498 };
2499
2500 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
2501 #define COMMON_OPTIONS \
2502     { "allow_sw", "Allow software encoding", OFFSET(allow_sw), AV_OPT_TYPE_BOOL, \
2503         { .i64 = 0 }, 0, 1, VE }, \
2504     { "require_sw", "Require software encoding", OFFSET(require_sw), AV_OPT_TYPE_BOOL, \
2505         { .i64 = 0 }, 0, 1, VE }, \
2506     { "realtime", "Hint that encoding should happen in real-time if not faster (e.g. capturing from camera).", \
2507         OFFSET(realtime), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE }, \
2508     { "frames_before", "Other frames will come before the frames in this session. This helps smooth concatenation issues.", \
2509         OFFSET(frames_before), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE }, \
2510     { "frames_after", "Other frames will come after the frames in this session. This helps smooth concatenation issues.", \
2511         OFFSET(frames_after), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE },
2512
2513 #define OFFSET(x) offsetof(VTEncContext, x)
2514 static const AVOption h264_options[] = {
2515     { "profile", "Profile", OFFSET(profile), AV_OPT_TYPE_INT, { .i64 = H264_PROF_AUTO }, H264_PROF_AUTO, H264_PROF_COUNT, VE, "profile" },
2516     { "baseline", "Baseline Profile", 0, AV_OPT_TYPE_CONST, { .i64 = H264_PROF_BASELINE }, INT_MIN, INT_MAX, VE, "profile" },
2517     { "main",     "Main Profile",     0, AV_OPT_TYPE_CONST, { .i64 = H264_PROF_MAIN     }, INT_MIN, INT_MAX, VE, "profile" },
2518     { "high",     "High Profile",     0, AV_OPT_TYPE_CONST, { .i64 = H264_PROF_HIGH     }, INT_MIN, INT_MAX, VE, "profile" },
2519
2520     { "level", "Level", OFFSET(level), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 52, VE, "level" },
2521     { "1.3", "Level 1.3, only available with Baseline Profile", 0, AV_OPT_TYPE_CONST, { .i64 = 13 }, INT_MIN, INT_MAX, VE, "level" },
2522     { "3.0", "Level 3.0", 0, AV_OPT_TYPE_CONST, { .i64 = 30 }, INT_MIN, INT_MAX, VE, "level" },
2523     { "3.1", "Level 3.1", 0, AV_OPT_TYPE_CONST, { .i64 = 31 }, INT_MIN, INT_MAX, VE, "level" },
2524     { "3.2", "Level 3.2", 0, AV_OPT_TYPE_CONST, { .i64 = 32 }, INT_MIN, INT_MAX, VE, "level" },
2525     { "4.0", "Level 4.0", 0, AV_OPT_TYPE_CONST, { .i64 = 40 }, INT_MIN, INT_MAX, VE, "level" },
2526     { "4.1", "Level 4.1", 0, AV_OPT_TYPE_CONST, { .i64 = 41 }, INT_MIN, INT_MAX, VE, "level" },
2527     { "4.2", "Level 4.2", 0, AV_OPT_TYPE_CONST, { .i64 = 42 }, INT_MIN, INT_MAX, VE, "level" },
2528     { "5.0", "Level 5.0", 0, AV_OPT_TYPE_CONST, { .i64 = 50 }, INT_MIN, INT_MAX, VE, "level" },
2529     { "5.1", "Level 5.1", 0, AV_OPT_TYPE_CONST, { .i64 = 51 }, INT_MIN, INT_MAX, VE, "level" },
2530     { "5.2", "Level 5.2", 0, AV_OPT_TYPE_CONST, { .i64 = 52 }, INT_MIN, INT_MAX, VE, "level" },
2531
2532     { "coder", "Entropy coding", OFFSET(entropy), AV_OPT_TYPE_INT, { .i64 = VT_ENTROPY_NOT_SET }, VT_ENTROPY_NOT_SET, VT_CABAC, VE, "coder" },
2533     { "cavlc", "CAVLC entropy coding", 0, AV_OPT_TYPE_CONST, { .i64 = VT_CAVLC }, INT_MIN, INT_MAX, VE, "coder" },
2534     { "vlc",   "CAVLC entropy coding", 0, AV_OPT_TYPE_CONST, { .i64 = VT_CAVLC }, INT_MIN, INT_MAX, VE, "coder" },
2535     { "cabac", "CABAC entropy coding", 0, AV_OPT_TYPE_CONST, { .i64 = VT_CABAC }, INT_MIN, INT_MAX, VE, "coder" },
2536     { "ac",    "CABAC entropy coding", 0, AV_OPT_TYPE_CONST, { .i64 = VT_CABAC }, INT_MIN, INT_MAX, VE, "coder" },
2537
2538     { "a53cc", "Use A53 Closed Captions (if available)", OFFSET(a53_cc), AV_OPT_TYPE_BOOL, {.i64 = 1}, 0, 1, VE },
2539
2540     COMMON_OPTIONS
2541     { NULL },
2542 };
2543
2544 static const AVClass h264_videotoolbox_class = {
2545     .class_name = "h264_videotoolbox",
2546     .item_name  = av_default_item_name,
2547     .option     = h264_options,
2548     .version    = LIBAVUTIL_VERSION_INT,
2549 };
2550
2551 AVCodec ff_h264_videotoolbox_encoder = {
2552     .name             = "h264_videotoolbox",
2553     .long_name        = NULL_IF_CONFIG_SMALL("VideoToolbox H.264 Encoder"),
2554     .type             = AVMEDIA_TYPE_VIDEO,
2555     .id               = AV_CODEC_ID_H264,
2556     .priv_data_size   = sizeof(VTEncContext),
2557     .pix_fmts         = avc_pix_fmts,
2558     .init             = vtenc_init,
2559     .encode2          = vtenc_frame,
2560     .close            = vtenc_close,
2561     .capabilities     = AV_CODEC_CAP_DELAY,
2562     .priv_class       = &h264_videotoolbox_class,
2563     .caps_internal    = FF_CODEC_CAP_INIT_THREADSAFE |
2564                         FF_CODEC_CAP_INIT_CLEANUP,
2565 };
2566
2567 static const AVOption hevc_options[] = {
2568     { "profile", "Profile", OFFSET(profile), AV_OPT_TYPE_INT, { .i64 = HEVC_PROF_AUTO }, HEVC_PROF_AUTO, HEVC_PROF_COUNT, VE, "profile" },
2569     { "main",     "Main Profile",     0, AV_OPT_TYPE_CONST, { .i64 = HEVC_PROF_MAIN   }, INT_MIN, INT_MAX, VE, "profile" },
2570     { "main10",   "Main10 Profile",   0, AV_OPT_TYPE_CONST, { .i64 = HEVC_PROF_MAIN10 }, INT_MIN, INT_MAX, VE, "profile" },
2571
2572     COMMON_OPTIONS
2573     { NULL },
2574 };
2575
2576 static const AVClass hevc_videotoolbox_class = {
2577     .class_name = "hevc_videotoolbox",
2578     .item_name  = av_default_item_name,
2579     .option     = hevc_options,
2580     .version    = LIBAVUTIL_VERSION_INT,
2581 };
2582
2583 AVCodec ff_hevc_videotoolbox_encoder = {
2584     .name             = "hevc_videotoolbox",
2585     .long_name        = NULL_IF_CONFIG_SMALL("VideoToolbox H.265 Encoder"),
2586     .type             = AVMEDIA_TYPE_VIDEO,
2587     .id               = AV_CODEC_ID_HEVC,
2588     .priv_data_size   = sizeof(VTEncContext),
2589     .pix_fmts         = hevc_pix_fmts,
2590     .init             = vtenc_init,
2591     .encode2          = vtenc_frame,
2592     .close            = vtenc_close,
2593     .capabilities     = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_HARDWARE,
2594     .priv_class       = &hevc_videotoolbox_class,
2595     .caps_internal    = FF_CODEC_CAP_INIT_THREADSAFE |
2596                         FF_CODEC_CAP_INIT_CLEANUP,
2597     .wrapper_name     = "videotoolbox",
2598 };