public SliceHeader readPart2( SliceHeader sh, NALUnit nalUnit, SeqParameterSet sps, PictureParameterSet pps, BitReader in) { sh.pps = pps; sh.sps = sps; sh.frame_num = readU(in, sps.log2_max_frame_num_minus4 + 4, "SH: frame_num"); if (!sps.frame_mbs_only_flag) { sh.field_pic_flag = readBool(in, "SH: field_pic_flag"); if (sh.field_pic_flag) { sh.bottom_field_flag = readBool(in, "SH: bottom_field_flag"); } } if (nalUnit.type == NALUnitType.IDR_SLICE) { sh.idr_pic_id = readUE(in, "SH: idr_pic_id"); } if (sps.pic_order_cnt_type == 0) { sh.pic_order_cnt_lsb = readU(in, sps.log2_max_pic_order_cnt_lsb_minus4 + 4, "SH: pic_order_cnt_lsb"); if (pps.pic_order_present_flag && !sps.field_pic_flag) { sh.delta_pic_order_cnt_bottom = readSE(in, "SH: delta_pic_order_cnt_bottom"); } } sh.delta_pic_order_cnt = new int[2]; if (sps.pic_order_cnt_type == 1 && !sps.delta_pic_order_always_zero_flag) { sh.delta_pic_order_cnt[0] = readSE(in, "SH: delta_pic_order_cnt[0]"); if (pps.pic_order_present_flag && !sps.field_pic_flag) sh.delta_pic_order_cnt[1] = readSE(in, "SH: delta_pic_order_cnt[1]"); } if (pps.redundant_pic_cnt_present_flag) { sh.redundant_pic_cnt = readUE(in, "SH: redundant_pic_cnt"); } if (sh.slice_type == SliceType.B) { sh.direct_spatial_mv_pred_flag = readBool(in, "SH: direct_spatial_mv_pred_flag"); } if (sh.slice_type == SliceType.P || sh.slice_type == SliceType.SP || sh.slice_type == SliceType.B) { sh.num_ref_idx_active_override_flag = readBool(in, "SH: num_ref_idx_active_override_flag"); if (sh.num_ref_idx_active_override_flag) { sh.num_ref_idx_active_minus1[0] = readUE(in, "SH: num_ref_idx_l0_active_minus1"); if (sh.slice_type == SliceType.B) { sh.num_ref_idx_active_minus1[1] = readUE(in, "SH: num_ref_idx_l1_active_minus1"); } } } readRefPicListReordering(sh, in); if ((pps.weighted_pred_flag && (sh.slice_type == SliceType.P || sh.slice_type == SliceType.SP)) || (pps.weighted_bipred_idc == 1 && sh.slice_type == SliceType.B)) readPredWeightTable(sps, pps, sh, in); if (nalUnit.nal_ref_idc != 0) readDecoderPicMarking(nalUnit, sh, in); if (pps.entropy_coding_mode_flag && sh.slice_type.isInter()) { sh.cabac_init_idc = readUE(in, "SH: cabac_init_idc"); } sh.slice_qp_delta = readSE(in, "SH: slice_qp_delta"); if (sh.slice_type == SliceType.SP || sh.slice_type == SliceType.SI) { if (sh.slice_type == SliceType.SP) { sh.sp_for_switch_flag = readBool(in, "SH: sp_for_switch_flag"); } sh.slice_qs_delta = readSE(in, "SH: slice_qs_delta"); } if (pps.deblocking_filter_control_present_flag) { sh.disable_deblocking_filter_idc = readUE(in, "SH: disable_deblocking_filter_idc"); if (sh.disable_deblocking_filter_idc != 1) { sh.slice_alpha_c0_offset_div2 = readSE(in, "SH: slice_alpha_c0_offset_div2"); sh.slice_beta_offset_div2 = readSE(in, "SH: slice_beta_offset_div2"); } } if (pps.num_slice_groups_minus1 > 0 && pps.slice_group_map_type >= 3 && pps.slice_group_map_type <= 5) { int len = getPicHeightInMbs(sps) * (sps.pic_width_in_mbs_minus1 + 1) / (pps.slice_group_change_rate_minus1 + 1); if ((getPicHeightInMbs(sps) * (sps.pic_width_in_mbs_minus1 + 1)) % (pps.slice_group_change_rate_minus1 + 1) > 0) len += 1; len = CeilLog2(len + 1); sh.slice_group_change_cycle = readU(in, len, "SH: slice_group_change_cycle"); } return sh; }