diff --git a/libavformat/Makefile b/libavformat/Makefile index d491d43fd2..a3cd5047f0 100644 --- a/libavformat/Makefile +++ b/libavformat/Makefile @@ -179,7 +179,7 @@ OBJS-$(CONFIG_MM_DEMUXER) += mm.o OBJS-$(CONFIG_MMF_DEMUXER) += mmf.o pcm.o OBJS-$(CONFIG_MMF_MUXER) += mmf.o OBJS-$(CONFIG_MOV_DEMUXER) += mov.o isom.o mov_chan.o -OBJS-$(CONFIG_MOV_MUXER) += movenc.o isom.o avc.o \ +OBJS-$(CONFIG_MOV_MUXER) += movenc.o isom.o avc.o hevc.o \ movenchint.o mov_chan.o OBJS-$(CONFIG_MP2_MUXER) += mp3enc.o rawenc.o id3v2enc.o OBJS-$(CONFIG_MP3_DEMUXER) += mp3dec.o diff --git a/libavformat/hevc.c b/libavformat/hevc.c new file mode 100644 index 0000000000..ab4eb10a8b --- /dev/null +++ b/libavformat/hevc.c @@ -0,0 +1,1076 @@ +/* + * Copyright (c) 2014 Tim Walker + * + * This file is part of Libav. + * + * Libav is free software; you can redistribute it and/or + * 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. + * + * Libav is distributed in the hope that it will be useful, + * 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 + * License along with Libav; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include "libavcodec/get_bits.h" +#include "libavcodec/golomb.h" +#include "libavcodec/hevc.h" +#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; + uint8_t sub_layer_profile_present_flag[MAX_SUB_LAYERS]; + uint8_t sub_layer_level_present_flag[MAX_SUB_LAYERS]; + + 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 + } +} + +static void skip_hrd_parameters(GetBitContext *gb, uint8_t cprms_present_flag, + 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); + + if (!low_delay_hrd_flag) + cpb_cnt_minus1 = get_ue_golomb_long(gb); + + 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); + } +} + +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) + get_se_golomb(gb); // scaling_list_dc_coef_minus8[i-2][j] + + for (k = 0; k < num_coeffs; k++) + get_se_golomb(gb); // scaling_list_delta_coef + } +} + +static int parse_rps(GetBitContext *gb, unsigned int rps_idx, + unsigned int num_rps, + unsigned int num_delta_pocs[MAX_SHORT_TERM_RPS_COUNT]) +{ + 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] + */ + for (i = 0; i < num_delta_pocs[rps_idx - 1]; i++) { + 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); + + 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; + unsigned int num_short_term_ref_pic_sets, num_delta_pocs[MAX_SHORT_TERM_RPS_COUNT]; + + 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); + if (num_short_term_ref_pic_sets > MAX_SHORT_TERM_RPS_COUNT) + 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 + for (i = 0; i < get_ue_golomb_long(gb); i++) { // num_long_term_ref_pics_sps + 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 + get_se_golomb (gb); // init_qp_minus26 + + /* + * 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 + + get_se_golomb(gb); // pps_cb_qp_offset + get_se_golomb(gb); // pps_cr_qp_offset + + /* + * weighted_pred_flag u(1) + * weighted_bipred_flag u(1) + * transquant_bypass_enabled_flag u(1) + */ + skip_bits(gb, 3); + + 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; + + dst = av_malloc(src_len); + 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. + */ + if (nal_type == NAL_VPS || nal_type == NAL_SPS || nal_type == NAL_PPS) + 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) { + case NAL_VPS: + case NAL_SPS: + case NAL_PPS: + case NAL_SEI_PREFIX: + case NAL_SEI_SUFFIX: + ret = hvcc_array_add_nal_unit(nal_buf, nal_size, nal_type, + ps_array_completeness, hvcc); + if (ret < 0) + goto end; + else if (nal_type == NAL_VPS) + ret = hvcc_parse_vps(&gbc, hvcc); + else if (nal_type == NAL_SPS) + ret = hvcc_parse_sps(&gbc, hvcc); + else if (nal_type == NAL_PPS) + 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 + * whether we didn't see any VUI (in wich case it should be reset to zero). + */ + 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; + + av_dlog(NULL, "configurationVersion: %"PRIu8"\n", + hvcc->configurationVersion); + av_dlog(NULL, "general_profile_space: %"PRIu8"\n", + hvcc->general_profile_space); + av_dlog(NULL, "general_tier_flag: %"PRIu8"\n", + hvcc->general_tier_flag); + av_dlog(NULL, "general_profile_idc: %"PRIu8"\n", + hvcc->general_profile_idc); + av_dlog(NULL, "general_profile_compatibility_flags: 0x%08"PRIx32"\n", + hvcc->general_profile_compatibility_flags); + av_dlog(NULL, "general_constraint_indicator_flags: 0x%012"PRIx64"\n", + hvcc->general_constraint_indicator_flags); + av_dlog(NULL, "general_level_idc: %"PRIu8"\n", + hvcc->general_level_idc); + av_dlog(NULL, "min_spatial_segmentation_idc: %"PRIu16"\n", + hvcc->min_spatial_segmentation_idc); + av_dlog(NULL, "parallelismType: %"PRIu8"\n", + hvcc->parallelismType); + av_dlog(NULL, "chromaFormat: %"PRIu8"\n", + hvcc->chromaFormat); + av_dlog(NULL, "bitDepthLumaMinus8: %"PRIu8"\n", + hvcc->bitDepthLumaMinus8); + av_dlog(NULL, "bitDepthChromaMinus8: %"PRIu8"\n", + hvcc->bitDepthChromaMinus8); + av_dlog(NULL, "avgFrameRate: %"PRIu16"\n", + hvcc->avgFrameRate); + av_dlog(NULL, "constantFrameRate: %"PRIu8"\n", + hvcc->constantFrameRate); + av_dlog(NULL, "numTemporalLayers: %"PRIu8"\n", + hvcc->numTemporalLayers); + av_dlog(NULL, "temporalIdNested: %"PRIu8"\n", + hvcc->temporalIdNested); + av_dlog(NULL, "lengthSizeMinusOne: %"PRIu8"\n", + hvcc->lengthSizeMinusOne); + av_dlog(NULL, "numOfArrays: %"PRIu8"\n", + hvcc->numOfArrays); + for (i = 0; i < hvcc->numOfArrays; i++) { + av_dlog(NULL, "array_completeness[%"PRIu8"]: %"PRIu8"\n", + i, hvcc->array[i].array_completeness); + av_dlog(NULL, "NAL_unit_type[%"PRIu8"]: %"PRIu8"\n", + i, hvcc->array[i].NAL_unit_type); + av_dlog(NULL, "numNalus[%"PRIu8"]: %"PRIu16"\n", + i, hvcc->array[i].numNalus); + for (j = 0; j < hvcc->array[i].numNalus; j++) + av_dlog(NULL, + "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) { + case NAL_VPS: + vps_count += hvcc->array[i].numNalus; + break; + case NAL_SPS: + sps_count += hvcc->array[i].numNalus; + break; + case NAL_PPS: + pps_count += hvcc->array[i].numNalus; + break; + default: + break; + } + if (!vps_count || vps_count > MAX_VPS_COUNT || + !sps_count || sps_count > MAX_SPS_COUNT || + !pps_count || pps_count > MAX_PPS_COUNT) + 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; +} + +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) { + case NAL_VPS: + case NAL_SPS: + case NAL_PPS: + case NAL_SEI_PREFIX: + case NAL_SEI_SUFFIX: + 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; +} diff --git a/libavformat/hevc.h b/libavformat/hevc.h new file mode 100644 index 0000000000..82525ac84b --- /dev/null +++ b/libavformat/hevc.h @@ -0,0 +1,50 @@ +/* + * Copyright (c) 2014 Tim Walker + * + * This file is part of Libav. + * + * Libav is free software; you can redistribute it and/or + * 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. + * + * Libav is distributed in the hope that it will be useful, + * 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 + * License along with Libav; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +/** + * @file + * internal header for HEVC (de)muxer utilities + */ + +#ifndef AVFORMAT_HEVC_H +#define AVFORMAT_HEVC_H + +#include +#include "avio.h" + +/** + * Writes HEVC extradata (parameter sets, declarative SEI NAL units) to the + * provided AVIOContext. + * + * If the extradata is Annex B format, it gets converted to hvcC format before + * writing. + * + * @param pb address of the AVIOContext where the hvcC shall be written + * @param data address of the buffer holding the data needed to write the hvcC + * @param size size (in bytes) of the data buffer + * @param ps_array_completeness whether all parameter sets are in the hvcC (1) + * or there may be additional parameter sets in the bitstream (0) + * @return 0 in case of success, a negative value corresponding to an AVERROR + * code in case of failure + */ +int ff_isom_write_hvcc(AVIOContext *pb, const uint8_t *data, + int size, int ps_array_completeness); + +#endif /* AVFORMAT_HEVC_H */ diff --git a/libavformat/movenc.c b/libavformat/movenc.c index 6344e38298..641e1c7f48 100644 --- a/libavformat/movenc.c +++ b/libavformat/movenc.c @@ -39,6 +39,7 @@ #include "libavutil/mathematics.h" #include "libavutil/opt.h" #include "libavutil/dict.h" +#include "hevc.h" #include "rtpenc.h" #include "mov_chan.h" @@ -685,6 +686,16 @@ static int mov_write_avcc_tag(AVIOContext *pb, MOVTrack *track) return update_size(pb, pos); } +static int mov_write_hvcc_tag(AVIOContext *pb, MOVTrack *track) +{ + int64_t pos = avio_tell(pb); + + avio_wb32(pb, 0); + ffio_wfourcc(pb, "hvcC"); + ff_isom_write_hvcc(pb, track->vos_data, track->vos_len, 0); + return update_size(pb, pos); +} + /* also used by all avid codecs (dv, imx, meridien) and their variants */ static int mov_write_avid_tag(AVIOContext *pb, MOVTrack *track) { @@ -1035,6 +1046,8 @@ static int mov_write_video_tag(AVIOContext *pb, MOVTrack *track) mov_write_svq3_tag(pb); else if (track->enc->codec_id == AV_CODEC_ID_DNXHD) mov_write_avid_tag(pb, track); + else if (track->enc->codec_id == AV_CODEC_ID_HEVC) + mov_write_hvcc_tag(pb, track); else if (track->enc->codec_id == AV_CODEC_ID_H264) { mov_write_avcc_tag(pb, track); if (track->mode == MODE_IPOD)