| 767 | } |
| 768 | |
| 769 | static int hvcc_parse_pps(GetBitContext *gb, HVCCNALUnit *nal, |
| 770 | HEVCDecoderConfigurationRecord *hvcc) |
| 771 | { |
| 772 | uint8_t tiles_enabled_flag, entropy_coding_sync_enabled_flag; |
| 773 | |
| 774 | nal->parameter_set_id = get_ue_golomb_long(gb); // pps_pic_parameter_set_id |
| 775 | get_ue_golomb_long(gb); // pps_seq_parameter_set_id |
| 776 | |
| 777 | /* |
| 778 | * dependent_slice_segments_enabled_flag u(1) |
| 779 | * output_flag_present_flag u(1) |
| 780 | * num_extra_slice_header_bits u(3) |
| 781 | * sign_data_hiding_enabled_flag u(1) |
| 782 | * cabac_init_present_flag u(1) |
| 783 | */ |
| 784 | skip_bits(gb, 7); |
| 785 | |
| 786 | get_ue_golomb_long(gb); // num_ref_idx_l0_default_active_minus1 |
| 787 | get_ue_golomb_long(gb); // num_ref_idx_l1_default_active_minus1 |
| 788 | get_se_golomb_long(gb); // init_qp_minus26 |
| 789 | |
| 790 | /* |
| 791 | * constrained_intra_pred_flag u(1) |
| 792 | * transform_skip_enabled_flag u(1) |
| 793 | */ |
| 794 | skip_bits(gb, 2); |
| 795 | |
| 796 | if (get_bits1(gb)) // cu_qp_delta_enabled_flag |
| 797 | get_ue_golomb_long(gb); // diff_cu_qp_delta_depth |
| 798 | |
| 799 | get_se_golomb_long(gb); // pps_cb_qp_offset |
| 800 | get_se_golomb_long(gb); // pps_cr_qp_offset |
| 801 | |
| 802 | /* |
| 803 | * pps_slice_chroma_qp_offsets_present_flag u(1) |
| 804 | * weighted_pred_flag u(1) |
| 805 | * weighted_bipred_flag u(1) |
| 806 | * transquant_bypass_enabled_flag u(1) |
| 807 | */ |
| 808 | skip_bits(gb, 4); |
| 809 | |
| 810 | tiles_enabled_flag = get_bits1(gb); |
| 811 | entropy_coding_sync_enabled_flag = get_bits1(gb); |
| 812 | |
| 813 | if (entropy_coding_sync_enabled_flag && tiles_enabled_flag) |
| 814 | hvcc->parallelismType = 0; // mixed-type parallel decoding |
| 815 | else if (entropy_coding_sync_enabled_flag) |
| 816 | hvcc->parallelismType = 3; // wavefront-based parallel decoding |
| 817 | else if (tiles_enabled_flag) |
| 818 | hvcc->parallelismType = 2; // tile-based parallel decoding |
| 819 | else |
| 820 | hvcc->parallelismType = 1; // slice-based parallel decoding |
| 821 | |
| 822 | /* nothing useful for hvcC past this point */ |
| 823 | return 0; |
| 824 | } |
| 825 | |
| 826 | static void nal_unit_parse_header(GetBitContext *gb, uint8_t *nal_type, |
no test coverage detected