hevc.c 38.5 KB
Newer Older
1 2 3
/*
 * Copyright (c) 2014 Tim Walker <tdskywalker@gmail.com>
 *
4
 * This file is part of FFmpeg.
5
 *
6
 * FFmpeg is free software; you can redistribute it and/or
7 8 9 10
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
11
 * FFmpeg is distributed in the hope that it will be useful,
12 13 14 15 16
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * 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 19 20
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

21
#include "libavcodec/avcodec.h"
22 23
#include "libavcodec/get_bits.h"
#include "libavcodec/golomb.h"
24
#include "libavcodec/hevc.h"
25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130
#include "libavutil/intreadwrite.h"
#include "avc.h"
#include "avio.h"
#include "hevc.h"

#define MAX_SPATIAL_SEGMENTATION 4096 // max. value of u(12) field

typedef struct HVCCNALUnitArray {
    uint8_t  array_completeness;
    uint8_t  NAL_unit_type;
    uint16_t numNalus;
    uint16_t *nalUnitLength;
    uint8_t  **nalUnit;
} HVCCNALUnitArray;

typedef struct HEVCDecoderConfigurationRecord {
    uint8_t  configurationVersion;
    uint8_t  general_profile_space;
    uint8_t  general_tier_flag;
    uint8_t  general_profile_idc;
    uint32_t general_profile_compatibility_flags;
    uint64_t general_constraint_indicator_flags;
    uint8_t  general_level_idc;
    uint16_t min_spatial_segmentation_idc;
    uint8_t  parallelismType;
    uint8_t  chromaFormat;
    uint8_t  bitDepthLumaMinus8;
    uint8_t  bitDepthChromaMinus8;
    uint16_t avgFrameRate;
    uint8_t  constantFrameRate;
    uint8_t  numTemporalLayers;
    uint8_t  temporalIdNested;
    uint8_t  lengthSizeMinusOne;
    uint8_t  numOfArrays;
    HVCCNALUnitArray *array;
} HEVCDecoderConfigurationRecord;

typedef struct HVCCProfileTierLevel {
    uint8_t  profile_space;
    uint8_t  tier_flag;
    uint8_t  profile_idc;
    uint32_t profile_compatibility_flags;
    uint64_t constraint_indicator_flags;
    uint8_t  level_idc;
} HVCCProfileTierLevel;

static void hvcc_update_ptl(HEVCDecoderConfigurationRecord *hvcc,
                            HVCCProfileTierLevel *ptl)
{
    /*
     * The value of general_profile_space in all the parameter sets must be
     * identical.
     */
    hvcc->general_profile_space = ptl->profile_space;

    /*
     * The level indication general_level_idc must indicate a level of
     * capability equal to or greater than the highest level indicated for the
     * highest tier in all the parameter sets.
     */
    if (hvcc->general_tier_flag < ptl->tier_flag)
        hvcc->general_level_idc = ptl->level_idc;
    else
        hvcc->general_level_idc = FFMAX(hvcc->general_level_idc, ptl->level_idc);

    /*
     * The tier indication general_tier_flag must indicate a tier equal to or
     * greater than the highest tier indicated in all the parameter sets.
     */
    hvcc->general_tier_flag = FFMAX(hvcc->general_tier_flag, ptl->tier_flag);

    /*
     * The profile indication general_profile_idc must indicate a profile to
     * which the stream associated with this configuration record conforms.
     *
     * If the sequence parameter sets are marked with different profiles, then
     * the stream may need examination to determine which profile, if any, the
     * entire stream conforms to. If the entire stream is not examined, or the
     * examination reveals that there is no profile to which the entire stream
     * conforms, then the entire stream must be split into two or more
     * sub-streams with separate configuration records in which these rules can
     * be met.
     *
     * Note: set the profile to the highest value for the sake of simplicity.
     */
    hvcc->general_profile_idc = FFMAX(hvcc->general_profile_idc, ptl->profile_idc);

    /*
     * Each bit in general_profile_compatibility_flags may only be set if all
     * the parameter sets set that bit.
     */
    hvcc->general_profile_compatibility_flags &= ptl->profile_compatibility_flags;

    /*
     * Each bit in general_constraint_indicator_flags may only be set if all
     * the parameter sets set that bit.
     */
    hvcc->general_constraint_indicator_flags &= ptl->constraint_indicator_flags;
}

static void hvcc_parse_ptl(GetBitContext *gb,
                           HEVCDecoderConfigurationRecord *hvcc,
                           unsigned int max_sub_layers_minus1)
{
    unsigned int i;
    HVCCProfileTierLevel general_ptl;
131 132
    uint8_t sub_layer_profile_present_flag[HEVC_MAX_SUB_LAYERS];
    uint8_t sub_layer_level_present_flag[HEVC_MAX_SUB_LAYERS];
133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192

    general_ptl.profile_space               = get_bits(gb, 2);
    general_ptl.tier_flag                   = get_bits1(gb);
    general_ptl.profile_idc                 = get_bits(gb, 5);
    general_ptl.profile_compatibility_flags = get_bits_long(gb, 32);
    general_ptl.constraint_indicator_flags  = get_bits64(gb, 48);
    general_ptl.level_idc                   = get_bits(gb, 8);
    hvcc_update_ptl(hvcc, &general_ptl);

    for (i = 0; i < max_sub_layers_minus1; i++) {
        sub_layer_profile_present_flag[i] = get_bits1(gb);
        sub_layer_level_present_flag[i]   = get_bits1(gb);
    }

    if (max_sub_layers_minus1 > 0)
        for (i = max_sub_layers_minus1; i < 8; i++)
            skip_bits(gb, 2); // reserved_zero_2bits[i]

    for (i = 0; i < max_sub_layers_minus1; i++) {
        if (sub_layer_profile_present_flag[i]) {
            /*
             * sub_layer_profile_space[i]                     u(2)
             * sub_layer_tier_flag[i]                         u(1)
             * sub_layer_profile_idc[i]                       u(5)
             * sub_layer_profile_compatibility_flag[i][0..31] u(32)
             * sub_layer_progressive_source_flag[i]           u(1)
             * sub_layer_interlaced_source_flag[i]            u(1)
             * sub_layer_non_packed_constraint_flag[i]        u(1)
             * sub_layer_frame_only_constraint_flag[i]        u(1)
             * sub_layer_reserved_zero_44bits[i]              u(44)
             */
            skip_bits_long(gb, 32);
            skip_bits_long(gb, 32);
            skip_bits     (gb, 24);
        }

        if (sub_layer_level_present_flag[i])
            skip_bits(gb, 8);
    }
}

static void skip_sub_layer_hrd_parameters(GetBitContext *gb,
                                          unsigned int cpb_cnt_minus1,
                                          uint8_t sub_pic_hrd_params_present_flag)
{
    unsigned int i;

    for (i = 0; i <= cpb_cnt_minus1; i++) {
        get_ue_golomb_long(gb); // bit_rate_value_minus1
        get_ue_golomb_long(gb); // cpb_size_value_minus1

        if (sub_pic_hrd_params_present_flag) {
            get_ue_golomb_long(gb); // cpb_size_du_value_minus1
            get_ue_golomb_long(gb); // bit_rate_du_value_minus1
        }

        skip_bits1(gb); // cbr_flag
    }
}

193
static int skip_hrd_parameters(GetBitContext *gb, uint8_t cprms_present_flag,
194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249
                                unsigned int max_sub_layers_minus1)
{
    unsigned int i;
    uint8_t sub_pic_hrd_params_present_flag = 0;
    uint8_t nal_hrd_parameters_present_flag = 0;
    uint8_t vcl_hrd_parameters_present_flag = 0;

    if (cprms_present_flag) {
        nal_hrd_parameters_present_flag = get_bits1(gb);
        vcl_hrd_parameters_present_flag = get_bits1(gb);

        if (nal_hrd_parameters_present_flag ||
            vcl_hrd_parameters_present_flag) {
            sub_pic_hrd_params_present_flag = get_bits1(gb);

            if (sub_pic_hrd_params_present_flag)
                /*
                 * tick_divisor_minus2                          u(8)
                 * du_cpb_removal_delay_increment_length_minus1 u(5)
                 * sub_pic_cpb_params_in_pic_timing_sei_flag    u(1)
                 * dpb_output_delay_du_length_minus1            u(5)
                 */
                skip_bits(gb, 19);

            /*
             * bit_rate_scale u(4)
             * cpb_size_scale u(4)
             */
            skip_bits(gb, 8);

            if (sub_pic_hrd_params_present_flag)
                skip_bits(gb, 4); // cpb_size_du_scale

            /*
             * initial_cpb_removal_delay_length_minus1 u(5)
             * au_cpb_removal_delay_length_minus1      u(5)
             * dpb_output_delay_length_minus1          u(5)
             */
            skip_bits(gb, 15);
        }
    }

    for (i = 0; i <= max_sub_layers_minus1; i++) {
        unsigned int cpb_cnt_minus1            = 0;
        uint8_t low_delay_hrd_flag             = 0;
        uint8_t fixed_pic_rate_within_cvs_flag = 0;
        uint8_t fixed_pic_rate_general_flag    = get_bits1(gb);

        if (!fixed_pic_rate_general_flag)
            fixed_pic_rate_within_cvs_flag = get_bits1(gb);

        if (fixed_pic_rate_within_cvs_flag)
            get_ue_golomb_long(gb); // elemental_duration_in_tc_minus1
        else
            low_delay_hrd_flag = get_bits1(gb);

250
        if (!low_delay_hrd_flag) {
251
            cpb_cnt_minus1 = get_ue_golomb_long(gb);
252 253 254
            if (cpb_cnt_minus1 > 31)
                return AVERROR_INVALIDDATA;
        }
255 256 257 258 259 260 261 262 263

        if (nal_hrd_parameters_present_flag)
            skip_sub_layer_hrd_parameters(gb, cpb_cnt_minus1,
                                          sub_pic_hrd_params_present_flag);

        if (vcl_hrd_parameters_present_flag)
            skip_sub_layer_hrd_parameters(gb, cpb_cnt_minus1,
                                          sub_pic_hrd_params_present_flag);
    }
264 265

    return 0;
266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410
}

static void skip_timing_info(GetBitContext *gb)
{
    skip_bits_long(gb, 32); // num_units_in_tick
    skip_bits_long(gb, 32); // time_scale

    if (get_bits1(gb))          // poc_proportional_to_timing_flag
        get_ue_golomb_long(gb); // num_ticks_poc_diff_one_minus1
}

static void hvcc_parse_vui(GetBitContext *gb,
                           HEVCDecoderConfigurationRecord *hvcc,
                           unsigned int max_sub_layers_minus1)
{
    unsigned int min_spatial_segmentation_idc;

    if (get_bits1(gb))              // aspect_ratio_info_present_flag
        if (get_bits(gb, 8) == 255) // aspect_ratio_idc
            skip_bits_long(gb, 32); // sar_width u(16), sar_height u(16)

    if (get_bits1(gb))  // overscan_info_present_flag
        skip_bits1(gb); // overscan_appropriate_flag

    if (get_bits1(gb)) {  // video_signal_type_present_flag
        skip_bits(gb, 4); // video_format u(3), video_full_range_flag u(1)

        if (get_bits1(gb)) // colour_description_present_flag
            /*
             * colour_primaries         u(8)
             * transfer_characteristics u(8)
             * matrix_coeffs            u(8)
             */
            skip_bits(gb, 24);
    }

    if (get_bits1(gb)) {        // chroma_loc_info_present_flag
        get_ue_golomb_long(gb); // chroma_sample_loc_type_top_field
        get_ue_golomb_long(gb); // chroma_sample_loc_type_bottom_field
    }

    /*
     * neutral_chroma_indication_flag u(1)
     * field_seq_flag                 u(1)
     * frame_field_info_present_flag  u(1)
     */
    skip_bits(gb, 3);

    if (get_bits1(gb)) {        // default_display_window_flag
        get_ue_golomb_long(gb); // def_disp_win_left_offset
        get_ue_golomb_long(gb); // def_disp_win_right_offset
        get_ue_golomb_long(gb); // def_disp_win_top_offset
        get_ue_golomb_long(gb); // def_disp_win_bottom_offset
    }

    if (get_bits1(gb)) { // vui_timing_info_present_flag
        skip_timing_info(gb);

        if (get_bits1(gb)) // vui_hrd_parameters_present_flag
            skip_hrd_parameters(gb, 1, max_sub_layers_minus1);
    }

    if (get_bits1(gb)) { // bitstream_restriction_flag
        /*
         * tiles_fixed_structure_flag              u(1)
         * motion_vectors_over_pic_boundaries_flag u(1)
         * restricted_ref_pic_lists_flag           u(1)
         */
        skip_bits(gb, 3);

        min_spatial_segmentation_idc = get_ue_golomb_long(gb);

        /*
         * unsigned int(12) min_spatial_segmentation_idc;
         *
         * The min_spatial_segmentation_idc indication must indicate a level of
         * spatial segmentation equal to or less than the lowest level of
         * spatial segmentation indicated in all the parameter sets.
         */
        hvcc->min_spatial_segmentation_idc = FFMIN(hvcc->min_spatial_segmentation_idc,
                                                   min_spatial_segmentation_idc);

        get_ue_golomb_long(gb); // max_bytes_per_pic_denom
        get_ue_golomb_long(gb); // max_bits_per_min_cu_denom
        get_ue_golomb_long(gb); // log2_max_mv_length_horizontal
        get_ue_golomb_long(gb); // log2_max_mv_length_vertical
    }
}

static void skip_sub_layer_ordering_info(GetBitContext *gb)
{
    get_ue_golomb_long(gb); // max_dec_pic_buffering_minus1
    get_ue_golomb_long(gb); // max_num_reorder_pics
    get_ue_golomb_long(gb); // max_latency_increase_plus1
}

static int hvcc_parse_vps(GetBitContext *gb,
                          HEVCDecoderConfigurationRecord *hvcc)
{
    unsigned int vps_max_sub_layers_minus1;

    /*
     * vps_video_parameter_set_id u(4)
     * vps_reserved_three_2bits   u(2)
     * vps_max_layers_minus1      u(6)
     */
    skip_bits(gb, 12);

    vps_max_sub_layers_minus1 = get_bits(gb, 3);

    /*
     * numTemporalLayers greater than 1 indicates that the stream to which this
     * configuration record applies is temporally scalable and the contained
     * number of temporal layers (also referred to as temporal sub-layer or
     * sub-layer in ISO/IEC 23008-2) is equal to numTemporalLayers. Value 1
     * indicates that the stream is not temporally scalable. Value 0 indicates
     * that it is unknown whether the stream is temporally scalable.
     */
    hvcc->numTemporalLayers = FFMAX(hvcc->numTemporalLayers,
                                    vps_max_sub_layers_minus1 + 1);

    /*
     * vps_temporal_id_nesting_flag u(1)
     * vps_reserved_0xffff_16bits   u(16)
     */
    skip_bits(gb, 17);

    hvcc_parse_ptl(gb, hvcc, vps_max_sub_layers_minus1);

    /* nothing useful for hvcC past this point */
    return 0;
}

static void skip_scaling_list_data(GetBitContext *gb)
{
    int i, j, k, num_coeffs;

    for (i = 0; i < 4; i++)
        for (j = 0; j < (i == 3 ? 2 : 6); j++)
            if (!get_bits1(gb))         // scaling_list_pred_mode_flag[i][j]
                get_ue_golomb_long(gb); // scaling_list_pred_matrix_id_delta[i][j]
            else {
                num_coeffs = FFMIN(64, 1 << (4 + (i << 1)));

                if (i > 1)
411
                    get_se_golomb_long(gb); // scaling_list_dc_coef_minus8[i-2][j]
412 413

                for (k = 0; k < num_coeffs; k++)
414
                    get_se_golomb_long(gb); // scaling_list_delta_coef
415 416 417 418 419
            }
}

static int parse_rps(GetBitContext *gb, unsigned int rps_idx,
                     unsigned int num_rps,
420
                     unsigned int num_delta_pocs[HEVC_MAX_SHORT_TERM_REF_PIC_SETS])
421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452
{
    unsigned int i;

    if (rps_idx && get_bits1(gb)) { // inter_ref_pic_set_prediction_flag
        /* this should only happen for slice headers, and this isn't one */
        if (rps_idx >= num_rps)
            return AVERROR_INVALIDDATA;

        skip_bits1        (gb); // delta_rps_sign
        get_ue_golomb_long(gb); // abs_delta_rps_minus1

        num_delta_pocs[rps_idx] = 0;

        /*
         * From libavcodec/hevc_ps.c:
         *
         * if (is_slice_header) {
         *    //foo
         * } else
         *     rps_ridx = &sps->st_rps[rps - sps->st_rps - 1];
         *
         * where:
         * rps:             &sps->st_rps[rps_idx]
         * sps->st_rps:     &sps->st_rps[0]
         * is_slice_header: rps_idx == num_rps
         *
         * thus:
         * if (num_rps != rps_idx)
         *     rps_ridx = &sps->st_rps[rps_idx - 1];
         *
         * NumDeltaPocs[RefRpsIdx]: num_delta_pocs[rps_idx - 1]
         */
453
        for (i = 0; i <= num_delta_pocs[rps_idx - 1]; i++) {
454 455 456 457 458 459 460 461 462 463 464 465
            uint8_t use_delta_flag = 0;
            uint8_t used_by_curr_pic_flag = get_bits1(gb);
            if (!used_by_curr_pic_flag)
                use_delta_flag = get_bits1(gb);

            if (used_by_curr_pic_flag || use_delta_flag)
                num_delta_pocs[rps_idx]++;
        }
    } else {
        unsigned int num_negative_pics = get_ue_golomb_long(gb);
        unsigned int num_positive_pics = get_ue_golomb_long(gb);

466 467 468
        if ((num_positive_pics + (uint64_t)num_negative_pics) * 2 > get_bits_left(gb))
            return AVERROR_INVALIDDATA;

469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488
        num_delta_pocs[rps_idx] = num_negative_pics + num_positive_pics;

        for (i = 0; i < num_negative_pics; i++) {
            get_ue_golomb_long(gb); // delta_poc_s0_minus1[rps_idx]
            skip_bits1        (gb); // used_by_curr_pic_s0_flag[rps_idx]
        }

        for (i = 0; i < num_positive_pics; i++) {
            get_ue_golomb_long(gb); // delta_poc_s1_minus1[rps_idx]
            skip_bits1        (gb); // used_by_curr_pic_s1_flag[rps_idx]
        }
    }

    return 0;
}

static int hvcc_parse_sps(GetBitContext *gb,
                          HEVCDecoderConfigurationRecord *hvcc)
{
    unsigned int i, sps_max_sub_layers_minus1, log2_max_pic_order_cnt_lsb_minus4;
489
    unsigned int num_short_term_ref_pic_sets, num_delta_pocs[HEVC_MAX_SHORT_TERM_REF_PIC_SETS];
490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558

    skip_bits(gb, 4); // sps_video_parameter_set_id

    sps_max_sub_layers_minus1 = get_bits (gb, 3);

    /*
     * numTemporalLayers greater than 1 indicates that the stream to which this
     * configuration record applies is temporally scalable and the contained
     * number of temporal layers (also referred to as temporal sub-layer or
     * sub-layer in ISO/IEC 23008-2) is equal to numTemporalLayers. Value 1
     * indicates that the stream is not temporally scalable. Value 0 indicates
     * that it is unknown whether the stream is temporally scalable.
     */
    hvcc->numTemporalLayers = FFMAX(hvcc->numTemporalLayers,
                                    sps_max_sub_layers_minus1 + 1);

    hvcc->temporalIdNested = get_bits1(gb);

    hvcc_parse_ptl(gb, hvcc, sps_max_sub_layers_minus1);

    get_ue_golomb_long(gb); // sps_seq_parameter_set_id

    hvcc->chromaFormat = get_ue_golomb_long(gb);

    if (hvcc->chromaFormat == 3)
        skip_bits1(gb); // separate_colour_plane_flag

    get_ue_golomb_long(gb); // pic_width_in_luma_samples
    get_ue_golomb_long(gb); // pic_height_in_luma_samples

    if (get_bits1(gb)) {        // conformance_window_flag
        get_ue_golomb_long(gb); // conf_win_left_offset
        get_ue_golomb_long(gb); // conf_win_right_offset
        get_ue_golomb_long(gb); // conf_win_top_offset
        get_ue_golomb_long(gb); // conf_win_bottom_offset
    }

    hvcc->bitDepthLumaMinus8          = get_ue_golomb_long(gb);
    hvcc->bitDepthChromaMinus8        = get_ue_golomb_long(gb);
    log2_max_pic_order_cnt_lsb_minus4 = get_ue_golomb_long(gb);

    /* sps_sub_layer_ordering_info_present_flag */
    i = get_bits1(gb) ? 0 : sps_max_sub_layers_minus1;
    for (; i <= sps_max_sub_layers_minus1; i++)
        skip_sub_layer_ordering_info(gb);

    get_ue_golomb_long(gb); // log2_min_luma_coding_block_size_minus3
    get_ue_golomb_long(gb); // log2_diff_max_min_luma_coding_block_size
    get_ue_golomb_long(gb); // log2_min_transform_block_size_minus2
    get_ue_golomb_long(gb); // log2_diff_max_min_transform_block_size
    get_ue_golomb_long(gb); // max_transform_hierarchy_depth_inter
    get_ue_golomb_long(gb); // max_transform_hierarchy_depth_intra

    if (get_bits1(gb) && // scaling_list_enabled_flag
        get_bits1(gb))   // sps_scaling_list_data_present_flag
        skip_scaling_list_data(gb);

    skip_bits1(gb); // amp_enabled_flag
    skip_bits1(gb); // sample_adaptive_offset_enabled_flag

    if (get_bits1(gb)) {           // pcm_enabled_flag
        skip_bits         (gb, 4); // pcm_sample_bit_depth_luma_minus1
        skip_bits         (gb, 4); // pcm_sample_bit_depth_chroma_minus1
        get_ue_golomb_long(gb);    // log2_min_pcm_luma_coding_block_size_minus3
        get_ue_golomb_long(gb);    // log2_diff_max_min_pcm_luma_coding_block_size
        skip_bits1        (gb);    // pcm_loop_filter_disabled_flag
    }

    num_short_term_ref_pic_sets = get_ue_golomb_long(gb);
559
    if (num_short_term_ref_pic_sets > HEVC_MAX_SHORT_TERM_REF_PIC_SETS)
560 561 562 563 564 565 566 567 568
        return AVERROR_INVALIDDATA;

    for (i = 0; i < num_short_term_ref_pic_sets; i++) {
        int ret = parse_rps(gb, i, num_short_term_ref_pic_sets, num_delta_pocs);
        if (ret < 0)
            return ret;
    }

    if (get_bits1(gb)) {                               // long_term_ref_pics_present_flag
569
        unsigned num_long_term_ref_pics_sps = get_ue_golomb_long(gb);
570 571
        if (num_long_term_ref_pics_sps > 31U)
            return AVERROR_INVALIDDATA;
572
        for (i = 0; i < num_long_term_ref_pics_sps; i++) { // num_long_term_ref_pics_sps
573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607
            int len = FFMIN(log2_max_pic_order_cnt_lsb_minus4 + 4, 16);
            skip_bits (gb, len); // lt_ref_pic_poc_lsb_sps[i]
            skip_bits1(gb);      // used_by_curr_pic_lt_sps_flag[i]
        }
    }

    skip_bits1(gb); // sps_temporal_mvp_enabled_flag
    skip_bits1(gb); // strong_intra_smoothing_enabled_flag

    if (get_bits1(gb)) // vui_parameters_present_flag
        hvcc_parse_vui(gb, hvcc, sps_max_sub_layers_minus1);

    /* nothing useful for hvcC past this point */
    return 0;
}

static int hvcc_parse_pps(GetBitContext *gb,
                          HEVCDecoderConfigurationRecord *hvcc)
{
    uint8_t tiles_enabled_flag, entropy_coding_sync_enabled_flag;

    get_ue_golomb_long(gb); // pps_pic_parameter_set_id
    get_ue_golomb_long(gb); // pps_seq_parameter_set_id

    /*
     * dependent_slice_segments_enabled_flag u(1)
     * output_flag_present_flag              u(1)
     * num_extra_slice_header_bits           u(3)
     * sign_data_hiding_enabled_flag         u(1)
     * cabac_init_present_flag               u(1)
     */
    skip_bits(gb, 7);

    get_ue_golomb_long(gb); // num_ref_idx_l0_default_active_minus1
    get_ue_golomb_long(gb); // num_ref_idx_l1_default_active_minus1
608
    get_se_golomb_long(gb); // init_qp_minus26
609 610 611 612 613 614 615 616 617 618

    /*
     * constrained_intra_pred_flag u(1)
     * transform_skip_enabled_flag u(1)
     */
    skip_bits(gb, 2);

    if (get_bits1(gb))          // cu_qp_delta_enabled_flag
        get_ue_golomb_long(gb); // diff_cu_qp_delta_depth

619 620
    get_se_golomb_long(gb); // pps_cb_qp_offset
    get_se_golomb_long(gb); // pps_cr_qp_offset
621 622

    /*
623
     * pps_slice_chroma_qp_offsets_present_flag u(1)
624 625 626 627
     * weighted_pred_flag               u(1)
     * weighted_bipred_flag             u(1)
     * transquant_bypass_enabled_flag   u(1)
     */
628
    skip_bits(gb, 4);
629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651

    tiles_enabled_flag               = get_bits1(gb);
    entropy_coding_sync_enabled_flag = get_bits1(gb);

    if (entropy_coding_sync_enabled_flag && tiles_enabled_flag)
        hvcc->parallelismType = 0; // mixed-type parallel decoding
    else if (entropy_coding_sync_enabled_flag)
        hvcc->parallelismType = 3; // wavefront-based parallel decoding
    else if (tiles_enabled_flag)
        hvcc->parallelismType = 2; // tile-based parallel decoding
    else
        hvcc->parallelismType = 1; // slice-based parallel decoding

    /* nothing useful for hvcC past this point */
    return 0;
}

static uint8_t *nal_unit_extract_rbsp(const uint8_t *src, uint32_t src_len,
                                      uint32_t *dst_len)
{
    uint8_t *dst;
    uint32_t i, len;

652
    dst = av_malloc(src_len + AV_INPUT_BUFFER_PADDING_SIZE);
653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737
    if (!dst)
        return NULL;

    /* NAL unit header (2 bytes) */
    i = len = 0;
    while (i < 2 && i < src_len)
        dst[len++] = src[i++];

    while (i + 2 < src_len)
        if (!src[i] && !src[i + 1] && src[i + 2] == 3) {
            dst[len++] = src[i++];
            dst[len++] = src[i++];
            i++; // remove emulation_prevention_three_byte
        } else
            dst[len++] = src[i++];

    while (i < src_len)
        dst[len++] = src[i++];

    *dst_len = len;
    return dst;
}



static void nal_unit_parse_header(GetBitContext *gb, uint8_t *nal_type)
{
    skip_bits1(gb); // forbidden_zero_bit

    *nal_type = get_bits(gb, 6);

    /*
     * nuh_layer_id          u(6)
     * nuh_temporal_id_plus1 u(3)
     */
    skip_bits(gb, 9);
}

static int hvcc_array_add_nal_unit(uint8_t *nal_buf, uint32_t nal_size,
                                   uint8_t nal_type, int ps_array_completeness,
                                   HEVCDecoderConfigurationRecord *hvcc)
{
    int ret;
    uint8_t index;
    uint16_t numNalus;
    HVCCNALUnitArray *array;

    for (index = 0; index < hvcc->numOfArrays; index++)
        if (hvcc->array[index].NAL_unit_type == nal_type)
            break;

    if (index >= hvcc->numOfArrays) {
        uint8_t i;

        ret = av_reallocp_array(&hvcc->array, index + 1, sizeof(HVCCNALUnitArray));
        if (ret < 0)
            return ret;

        for (i = hvcc->numOfArrays; i <= index; i++)
            memset(&hvcc->array[i], 0, sizeof(HVCCNALUnitArray));
        hvcc->numOfArrays = index + 1;
    }

    array    = &hvcc->array[index];
    numNalus = array->numNalus;

    ret = av_reallocp_array(&array->nalUnit, numNalus + 1, sizeof(uint8_t*));
    if (ret < 0)
        return ret;

    ret = av_reallocp_array(&array->nalUnitLength, numNalus + 1, sizeof(uint16_t));
    if (ret < 0)
        return ret;

    array->nalUnit      [numNalus] = nal_buf;
    array->nalUnitLength[numNalus] = nal_size;
    array->NAL_unit_type           = nal_type;
    array->numNalus++;

    /*
     * When the sample entry name is ‘hvc1’, the default and mandatory value of
     * array_completeness is 1 for arrays of all types of parameter sets, and 0
     * for all other arrays. When the sample entry name is ‘hev1’, the default
     * value of array_completeness is 0 for all arrays.
     */
738
    if (nal_type == HEVC_NAL_VPS || nal_type == HEVC_NAL_SPS || nal_type == HEVC_NAL_PPS)
739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771
        array->array_completeness = ps_array_completeness;

    return 0;
}

static int hvcc_add_nal_unit(uint8_t *nal_buf, uint32_t nal_size,
                             int ps_array_completeness,
                             HEVCDecoderConfigurationRecord *hvcc)
{
    int ret = 0;
    GetBitContext gbc;
    uint8_t nal_type;
    uint8_t *rbsp_buf;
    uint32_t rbsp_size;

    rbsp_buf = nal_unit_extract_rbsp(nal_buf, nal_size, &rbsp_size);
    if (!rbsp_buf) {
        ret = AVERROR(ENOMEM);
        goto end;
    }

    ret = init_get_bits8(&gbc, rbsp_buf, rbsp_size);
    if (ret < 0)
        goto end;

    nal_unit_parse_header(&gbc, &nal_type);

    /*
     * Note: only 'declarative' SEI messages are allowed in
     * hvcC. Perhaps the SEI playload type should be checked
     * and non-declarative SEI messages discarded?
     */
    switch (nal_type) {
772 773 774 775 776
    case HEVC_NAL_VPS:
    case HEVC_NAL_SPS:
    case HEVC_NAL_PPS:
    case HEVC_NAL_SEI_PREFIX:
    case HEVC_NAL_SEI_SUFFIX:
777 778 779 780
        ret = hvcc_array_add_nal_unit(nal_buf, nal_size, nal_type,
                                      ps_array_completeness, hvcc);
        if (ret < 0)
            goto end;
781
        else if (nal_type == HEVC_NAL_VPS)
782
            ret = hvcc_parse_vps(&gbc, hvcc);
783
        else if (nal_type == HEVC_NAL_SPS)
784
            ret = hvcc_parse_sps(&gbc, hvcc);
785
        else if (nal_type == HEVC_NAL_PPS)
786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814
            ret = hvcc_parse_pps(&gbc, hvcc);
        if (ret < 0)
            goto end;
        break;
    default:
        ret = AVERROR_INVALIDDATA;
        goto end;
    }

end:
    av_free(rbsp_buf);
    return ret;
}

static void hvcc_init(HEVCDecoderConfigurationRecord *hvcc)
{
    memset(hvcc, 0, sizeof(HEVCDecoderConfigurationRecord));
    hvcc->configurationVersion = 1;
    hvcc->lengthSizeMinusOne   = 3; // 4 bytes

    /*
     * The following fields have all their valid bits set by default,
     * the ProfileTierLevel parsing code will unset them when needed.
     */
    hvcc->general_profile_compatibility_flags = 0xffffffff;
    hvcc->general_constraint_indicator_flags  = 0xffffffffffff;

    /*
     * Initialize this field with an invalid value which can be used to detect
Lou Logan's avatar
Lou Logan committed
815
     * whether we didn't see any VUI (in which case it should be reset to zero).
816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864
     */
    hvcc->min_spatial_segmentation_idc = MAX_SPATIAL_SEGMENTATION + 1;
}

static void hvcc_close(HEVCDecoderConfigurationRecord *hvcc)
{
    uint8_t i;

    for (i = 0; i < hvcc->numOfArrays; i++) {
        hvcc->array[i].numNalus = 0;
        av_freep(&hvcc->array[i].nalUnit);
        av_freep(&hvcc->array[i].nalUnitLength);
    }

    hvcc->numOfArrays = 0;
    av_freep(&hvcc->array);
}

static int hvcc_write(AVIOContext *pb, HEVCDecoderConfigurationRecord *hvcc)
{
    uint8_t i;
    uint16_t j, vps_count = 0, sps_count = 0, pps_count = 0;

    /*
     * We only support writing HEVCDecoderConfigurationRecord version 1.
     */
    hvcc->configurationVersion = 1;

    /*
     * If min_spatial_segmentation_idc is invalid, reset to 0 (unspecified).
     */
    if (hvcc->min_spatial_segmentation_idc > MAX_SPATIAL_SEGMENTATION)
        hvcc->min_spatial_segmentation_idc = 0;

    /*
     * parallelismType indicates the type of parallelism that is used to meet
     * the restrictions imposed by min_spatial_segmentation_idc when the value
     * of min_spatial_segmentation_idc is greater than 0.
     */
    if (!hvcc->min_spatial_segmentation_idc)
        hvcc->parallelismType = 0;

    /*
     * It's unclear how to properly compute these fields, so
     * let's always set them to values meaning 'unspecified'.
     */
    hvcc->avgFrameRate      = 0;
    hvcc->constantFrameRate = 0;

865
    av_log(NULL, AV_LOG_TRACE,  "configurationVersion:                %"PRIu8"\n",
866
            hvcc->configurationVersion);
867
    av_log(NULL, AV_LOG_TRACE,  "general_profile_space:               %"PRIu8"\n",
868
            hvcc->general_profile_space);
869
    av_log(NULL, AV_LOG_TRACE,  "general_tier_flag:                   %"PRIu8"\n",
870
            hvcc->general_tier_flag);
871
    av_log(NULL, AV_LOG_TRACE,  "general_profile_idc:                 %"PRIu8"\n",
872
            hvcc->general_profile_idc);
873
    av_log(NULL, AV_LOG_TRACE, "general_profile_compatibility_flags: 0x%08"PRIx32"\n",
874
            hvcc->general_profile_compatibility_flags);
875
    av_log(NULL, AV_LOG_TRACE, "general_constraint_indicator_flags:  0x%012"PRIx64"\n",
876
            hvcc->general_constraint_indicator_flags);
877
    av_log(NULL, AV_LOG_TRACE,  "general_level_idc:                   %"PRIu8"\n",
878
            hvcc->general_level_idc);
879
    av_log(NULL, AV_LOG_TRACE,  "min_spatial_segmentation_idc:        %"PRIu16"\n",
880
            hvcc->min_spatial_segmentation_idc);
881
    av_log(NULL, AV_LOG_TRACE,  "parallelismType:                     %"PRIu8"\n",
882
            hvcc->parallelismType);
883
    av_log(NULL, AV_LOG_TRACE,  "chromaFormat:                        %"PRIu8"\n",
884
            hvcc->chromaFormat);
885
    av_log(NULL, AV_LOG_TRACE,  "bitDepthLumaMinus8:                  %"PRIu8"\n",
886
            hvcc->bitDepthLumaMinus8);
887
    av_log(NULL, AV_LOG_TRACE,  "bitDepthChromaMinus8:                %"PRIu8"\n",
888
            hvcc->bitDepthChromaMinus8);
889
    av_log(NULL, AV_LOG_TRACE,  "avgFrameRate:                        %"PRIu16"\n",
890
            hvcc->avgFrameRate);
891
    av_log(NULL, AV_LOG_TRACE,  "constantFrameRate:                   %"PRIu8"\n",
892
            hvcc->constantFrameRate);
893
    av_log(NULL, AV_LOG_TRACE,  "numTemporalLayers:                   %"PRIu8"\n",
894
            hvcc->numTemporalLayers);
895
    av_log(NULL, AV_LOG_TRACE,  "temporalIdNested:                    %"PRIu8"\n",
896
            hvcc->temporalIdNested);
897
    av_log(NULL, AV_LOG_TRACE,  "lengthSizeMinusOne:                  %"PRIu8"\n",
898
            hvcc->lengthSizeMinusOne);
899
    av_log(NULL, AV_LOG_TRACE,  "numOfArrays:                         %"PRIu8"\n",
900 901
            hvcc->numOfArrays);
    for (i = 0; i < hvcc->numOfArrays; i++) {
902
        av_log(NULL, AV_LOG_TRACE, "array_completeness[%"PRIu8"]:               %"PRIu8"\n",
903
                i, hvcc->array[i].array_completeness);
904
        av_log(NULL, AV_LOG_TRACE, "NAL_unit_type[%"PRIu8"]:                    %"PRIu8"\n",
905
                i, hvcc->array[i].NAL_unit_type);
906
        av_log(NULL, AV_LOG_TRACE, "numNalus[%"PRIu8"]:                         %"PRIu16"\n",
907 908
                i, hvcc->array[i].numNalus);
        for (j = 0; j < hvcc->array[i].numNalus; j++)
909
            av_log(NULL, AV_LOG_TRACE,
910 911 912 913 914 915 916 917 918
                    "nalUnitLength[%"PRIu8"][%"PRIu16"]:                 %"PRIu16"\n",
                    i, j, hvcc->array[i].nalUnitLength[j]);
    }

    /*
     * We need at least one of each: VPS, SPS and PPS.
     */
    for (i = 0; i < hvcc->numOfArrays; i++)
        switch (hvcc->array[i].NAL_unit_type) {
919
        case HEVC_NAL_VPS:
920 921
            vps_count += hvcc->array[i].numNalus;
            break;
922
        case HEVC_NAL_SPS:
923 924
            sps_count += hvcc->array[i].numNalus;
            break;
925
        case HEVC_NAL_PPS:
926 927 928 929 930
            pps_count += hvcc->array[i].numNalus;
            break;
        default:
            break;
        }
931 932 933
    if (!vps_count || vps_count > HEVC_MAX_VPS_COUNT ||
        !sps_count || sps_count > HEVC_MAX_SPS_COUNT ||
        !pps_count || pps_count > HEVC_MAX_PPS_COUNT)
934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029
        return AVERROR_INVALIDDATA;

    /* unsigned int(8) configurationVersion = 1; */
    avio_w8(pb, hvcc->configurationVersion);

    /*
     * unsigned int(2) general_profile_space;
     * unsigned int(1) general_tier_flag;
     * unsigned int(5) general_profile_idc;
     */
    avio_w8(pb, hvcc->general_profile_space << 6 |
                hvcc->general_tier_flag     << 5 |
                hvcc->general_profile_idc);

    /* unsigned int(32) general_profile_compatibility_flags; */
    avio_wb32(pb, hvcc->general_profile_compatibility_flags);

    /* unsigned int(48) general_constraint_indicator_flags; */
    avio_wb32(pb, hvcc->general_constraint_indicator_flags >> 16);
    avio_wb16(pb, hvcc->general_constraint_indicator_flags);

    /* unsigned int(8) general_level_idc; */
    avio_w8(pb, hvcc->general_level_idc);

    /*
     * bit(4) reserved = ‘1111’b;
     * unsigned int(12) min_spatial_segmentation_idc;
     */
    avio_wb16(pb, hvcc->min_spatial_segmentation_idc | 0xf000);

    /*
     * bit(6) reserved = ‘111111’b;
     * unsigned int(2) parallelismType;
     */
    avio_w8(pb, hvcc->parallelismType | 0xfc);

    /*
     * bit(6) reserved = ‘111111’b;
     * unsigned int(2) chromaFormat;
     */
    avio_w8(pb, hvcc->chromaFormat | 0xfc);

    /*
     * bit(5) reserved = ‘11111’b;
     * unsigned int(3) bitDepthLumaMinus8;
     */
    avio_w8(pb, hvcc->bitDepthLumaMinus8 | 0xf8);

    /*
     * bit(5) reserved = ‘11111’b;
     * unsigned int(3) bitDepthChromaMinus8;
     */
    avio_w8(pb, hvcc->bitDepthChromaMinus8 | 0xf8);

    /* bit(16) avgFrameRate; */
    avio_wb16(pb, hvcc->avgFrameRate);

    /*
     * bit(2) constantFrameRate;
     * bit(3) numTemporalLayers;
     * bit(1) temporalIdNested;
     * unsigned int(2) lengthSizeMinusOne;
     */
    avio_w8(pb, hvcc->constantFrameRate << 6 |
                hvcc->numTemporalLayers << 3 |
                hvcc->temporalIdNested  << 2 |
                hvcc->lengthSizeMinusOne);

    /* unsigned int(8) numOfArrays; */
    avio_w8(pb, hvcc->numOfArrays);

    for (i = 0; i < hvcc->numOfArrays; i++) {
        /*
         * bit(1) array_completeness;
         * unsigned int(1) reserved = 0;
         * unsigned int(6) NAL_unit_type;
         */
        avio_w8(pb, hvcc->array[i].array_completeness << 7 |
                    hvcc->array[i].NAL_unit_type & 0x3f);

        /* unsigned int(16) numNalus; */
        avio_wb16(pb, hvcc->array[i].numNalus);

        for (j = 0; j < hvcc->array[i].numNalus; j++) {
            /* unsigned int(16) nalUnitLength; */
            avio_wb16(pb, hvcc->array[i].nalUnitLength[j]);

            /* bit(8*nalUnitLength) nalUnit; */
            avio_write(pb, hvcc->array[i].nalUnit[j],
                       hvcc->array[i].nalUnitLength[j]);
        }
    }

    return 0;
}

1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055
int ff_hevc_annexb2mp4(AVIOContext *pb, const uint8_t *buf_in,
                       int size, int filter_ps, int *ps_count)
{
    int num_ps = 0, ret = 0;
    uint8_t *buf, *end, *start = NULL;

    if (!filter_ps) {
        ret = ff_avc_parse_nal_units(pb, buf_in, size);
        goto end;
    }

    ret = ff_avc_parse_nal_units_buf(buf_in, &start, &size);
    if (ret < 0)
        goto end;

    ret = 0;
    buf = start;
    end = start + size;

    while (end - buf > 4) {
        uint32_t len = FFMIN(AV_RB32(buf), end - buf - 4);
        uint8_t type = (buf[4] >> 1) & 0x3f;

        buf += 4;

        switch (type) {
1056 1057 1058
        case HEVC_NAL_VPS:
        case HEVC_NAL_SPS:
        case HEVC_NAL_PPS:
1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071
            num_ps++;
            break;
        default:
            ret += 4 + len;
            avio_wb32(pb, len);
            avio_write(pb, buf, len);
            break;
        }

        buf += len;
    }

end:
1072
    av_free(start);
1073 1074 1075 1076 1077 1078 1079 1080 1081
    if (ps_count)
        *ps_count = num_ps;
    return ret;
}

int ff_hevc_annexb2mp4_buf(const uint8_t *buf_in, uint8_t **buf_out,
                           int *size, int filter_ps, int *ps_count)
{
    AVIOContext *pb;
1082
    int ret;
1083 1084 1085

    ret = avio_open_dyn_buf(&pb);
    if (ret < 0)
1086
        return ret;
1087

1088
    ret   = ff_hevc_annexb2mp4(pb, buf_in, *size, filter_ps, ps_count);
1089 1090 1091 1092 1093
    *size = avio_close_dyn_buf(pb, buf_out);

    return ret;
}

1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130
int ff_isom_write_hvcc(AVIOContext *pb, const uint8_t *data,
                       int size, int ps_array_completeness)
{
    int ret = 0;
    uint8_t *buf, *end, *start = NULL;
    HEVCDecoderConfigurationRecord hvcc;

    hvcc_init(&hvcc);

    if (size < 6) {
        /* We can't write a valid hvcC from the provided data */
        ret = AVERROR_INVALIDDATA;
        goto end;
    } else if (*data == 1) {
        /* Data is already hvcC-formatted */
        avio_write(pb, data, size);
        goto end;
    } else if (!(AV_RB24(data) == 1 || AV_RB32(data) == 1)) {
        /* Not a valid Annex B start code prefix */
        ret = AVERROR_INVALIDDATA;
        goto end;
    }

    ret = ff_avc_parse_nal_units_buf(data, &start, &size);
    if (ret < 0)
        goto end;

    buf = start;
    end = start + size;

    while (end - buf > 4) {
        uint32_t len = FFMIN(AV_RB32(buf), end - buf - 4);
        uint8_t type = (buf[4] >> 1) & 0x3f;

        buf += 4;

        switch (type) {
1131 1132 1133 1134 1135
        case HEVC_NAL_VPS:
        case HEVC_NAL_SPS:
        case HEVC_NAL_PPS:
        case HEVC_NAL_SEI_PREFIX:
        case HEVC_NAL_SEI_SUFFIX:
1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153
            ret = hvcc_add_nal_unit(buf, len, ps_array_completeness, &hvcc);
            if (ret < 0)
                goto end;
            break;
        default:
            break;
        }

        buf += len;
    }

    ret = hvcc_write(pb, &hvcc);

end:
    hvcc_close(&hvcc);
    av_free(start);
    return ret;
}