public static SeqParameterSetExt read(MemoryStream iss)
{
BitReader inb = new BitReader(iss);
SeqParameterSetExt spse = new SeqParameterSetExt();
spse.seq_parameter_set_id = CAVLCReader.readUE(inb, "SPSE: seq_parameter_set_id");
spse.aux_format_idc = CAVLCReader.readUE(inb, "SPSE: aux_format_idc");
if (spse.aux_format_idc != 0)
{
spse.bit_depth_aux_minus8 = CAVLCReader.readUE(inb, "SPSE: bit_depth_aux_minus8");
spse.alpha_incr_flag = CAVLCReader.readBool(inb, "SPSE: alpha_incr_flag");
spse.alpha_opaque_value = CAVLCReader.readU(inb, spse.bit_depth_aux_minus8 + 9, "SPSE: alpha_opaque_value");
spse.alpha_transparent_value = CAVLCReader.readU(inb, spse.bit_depth_aux_minus8 + 9, "SPSE: alpha_transparent_value");
}
spse.additional_extension_flag = CAVLCReader.readBool(inb, "SPSE: additional_extension_flag");
return(spse);
}
public static PictureParameterSet read(MemoryStream iss)
{
BitReader inb = new BitReader(iss);
PictureParameterSet pps = new PictureParameterSet();
pps.pic_parameter_set_id = CAVLCReader.readUE(inb, "PPS: pic_parameter_set_id");
pps.seq_parameter_set_id = CAVLCReader.readUE(inb, "PPS: seq_parameter_set_id");
pps.entropy_coding_mode_flag = CAVLCReader.readBool(inb, "PPS: entropy_coding_mode_flag");
pps.pic_order_present_flag = CAVLCReader.readBool(inb, "PPS: pic_order_present_flag");
pps.num_slice_groups_minus1 = CAVLCReader.readUE(inb, "PPS: num_slice_groups_minus1");
if (pps.num_slice_groups_minus1 > 0)
{
pps.slice_group_map_type = CAVLCReader.readUE(inb, "PPS: slice_group_map_type");
pps.top_left = new int[pps.num_slice_groups_minus1 + 1];
pps.bottom_right = new int[pps.num_slice_groups_minus1 + 1];
pps.run_length_minus1 = new int[pps.num_slice_groups_minus1 + 1];
if (pps.slice_group_map_type == 0)
{
for (int iGroup = 0; iGroup <= pps.num_slice_groups_minus1; iGroup++)
{
pps.run_length_minus1[iGroup] = CAVLCReader.readUE(inb, "PPS: run_length_minus1");
}
}
else if (pps.slice_group_map_type == 2)
{
for (int iGroup = 0; iGroup < pps.num_slice_groups_minus1; iGroup++)
{
pps.top_left[iGroup] = CAVLCReader.readUE(inb, "PPS: top_left");
pps.bottom_right[iGroup] = CAVLCReader.readUE(inb, "PPS: bottom_right");
}
}
else if (pps.slice_group_map_type == 3 || pps.slice_group_map_type == 4 || pps.slice_group_map_type == 5)
{
pps.slice_group_change_direction_flag = CAVLCReader.readBool(inb, "PPS: slice_group_change_direction_flag");
pps.slice_group_change_rate_minus1 = CAVLCReader.readUE(inb, "PPS: slice_group_change_rate_minus1");
}
else if (pps.slice_group_map_type == 6)
{
int NumberBitsPerSliceGroupId;
if (pps.num_slice_groups_minus1 + 1 > 4)
{
NumberBitsPerSliceGroupId = 3;
}
else if (pps.num_slice_groups_minus1 + 1 > 2)
{
NumberBitsPerSliceGroupId = 2;
}
else
{
NumberBitsPerSliceGroupId = 1;
}
int pic_size_in_map_units_minus1 = CAVLCReader.readUE(inb, "PPS: pic_size_in_map_units_minus1");
pps.slice_group_id = new int[pic_size_in_map_units_minus1 + 1];
for (int i = 0; i <= pic_size_in_map_units_minus1; i++)
{
pps.slice_group_id[i] = CAVLCReader.readU(inb, NumberBitsPerSliceGroupId, "PPS: slice_group_id [" + i + "]f");
}
}
}
pps.num_ref_idx_active_minus1 = new int[] { CAVLCReader.readUE(inb, "PPS: num_ref_idx_l0_active_minus1"), CAVLCReader.readUE(inb, "PPS: num_ref_idx_l1_active_minus1") };
pps.weighted_pred_flag = CAVLCReader.readBool(inb, "PPS: weighted_pred_flag");
pps.weighted_bipred_idc = CAVLCReader.readNBit(inb, 2, "PPS: weighted_bipred_idc");
pps.pic_init_qp_minus26 = CAVLCReader.readSE(inb, "PPS: pic_init_qp_minus26");
pps.pic_init_qs_minus26 = CAVLCReader.readSE(inb, "PPS: pic_init_qs_minus26");
pps.chroma_qp_index_offset = CAVLCReader.readSE(inb, "PPS: chroma_qp_index_offset");
pps.deblocking_filter_control_present_flag = CAVLCReader.readBool(inb, "PPS: deblocking_filter_control_present_flag");
pps.constrained_intra_pred_flag = CAVLCReader.readBool(inb, "PPS: constrained_intra_pred_flag");
pps.redundant_pic_cnt_present_flag = CAVLCReader.readBool(inb, "PPS: redundant_pic_cnt_present_flag");
if (CAVLCReader.moreRBSPData(inb))
{
pps.extended = new PictureParameterSet.PPSExt();
pps.extended.transform_8x8_mode_flag = CAVLCReader.readBool(inb, "PPS: transform_8x8_mode_flag");
bool pic_scaling_matrix_present_flag = CAVLCReader.readBool(inb, "PPS: pic_scaling_matrix_present_flag");
if (pic_scaling_matrix_present_flag)
{
for (int i = 0; i < 6 + 2 * (pps.extended.transform_8x8_mode_flag ? 1 : 0); i++)
{
bool pic_scaling_list_present_flag = CAVLCReader.readBool(inb, "PPS: pic_scaling_list_present_flag");
if (pic_scaling_list_present_flag)
{
pps.extended.scalindMatrix.ScalingList4x4 = new ScalingList[8];
pps.extended.scalindMatrix.ScalingList8x8 = new ScalingList[8];
if (i < 6)
{
pps.extended.scalindMatrix.ScalingList4x4[i] = ScalingList.read(inb, 16);
}
else
{
pps.extended.scalindMatrix.ScalingList8x8[i - 6] = ScalingList.read(inb, 64);
}
}
}
}
pps.extended.second_chroma_qp_index_offset = CAVLCReader.readSE(inb, "PPS: second_chroma_qp_index_offset");
}
return(pps);
}
public int readCoeffs(BitReader inb, VLC coeffTokenTab, VLC[] totalZerosTab, int[] coeffLevel, int firstCoeff,
int nCoeff, int[] zigzag)
{
int coeffToken = coeffTokenTab.readVLC(inb);
int totalCoeffx = totalCoeff(coeffToken);
int trailingOnesx = trailingOnes(coeffToken);
// System.out.println("Coeff token. Total: " + totalCoeff + ", trailOne: " + trailingOnes);
// blockType.getMaxCoeffs();
// if (blockType == BlockType.BLOCK_CHROMA_DC)
// maxCoeff = 16 / (color.compWidth[1] * color.compHeight[1]);
if (totalCoeffx > 0)
{
int suffixLength = totalCoeffx > 10 && trailingOnesx < 3 ? 1 : 0;
int[] level = new int[totalCoeffx];
int i;
for (i = 0; i < trailingOnesx; i++)
{
level[i] = 1 - 2 * inb.read1Bit();
}
for (; i < totalCoeffx; i++)
{
int level_prefix = CAVLCReader.readZeroBitCount(inb, "");
int levelSuffixSize = suffixLength;
if (level_prefix == 14 && suffixLength == 0)
{
levelSuffixSize = 4;
}
if (level_prefix >= 15)
{
levelSuffixSize = level_prefix - 3;
}
int levelCode = (Min(15, level_prefix) << suffixLength);
if (levelSuffixSize > 0)
{
int level_suffix = CAVLCReader.readU(inb, levelSuffixSize, "RB: level_suffix");
levelCode += level_suffix;
}
if (level_prefix >= 15 && suffixLength == 0)
{
levelCode += 15;
}
if (level_prefix >= 16)
{
levelCode += (1 << (level_prefix - 3)) - 4096;
}
if (i == trailingOnesx && trailingOnesx < 3)
{
levelCode += 2;
}
if (levelCode % 2 == 0)
{
level[i] = (levelCode + 2) >> 1;
}
else
{
level[i] = (-levelCode - 1) >> 1;
}
if (suffixLength == 0)
{
suffixLength = 1;
}
if (Abs(level[i]) > (3 << (suffixLength - 1)) && suffixLength < 6)
{
suffixLength++;
}
}
int zerosLeft;
if (totalCoeffx < nCoeff)
{
if (coeffLevel.Length == 4)
{
zerosLeft = H264Const.totalZeros4[totalCoeffx - 1].readVLC(inb);
}
else if (coeffLevel.Length == 8)
{
zerosLeft = H264Const.totalZeros8[totalCoeffx - 1].readVLC(inb);
}
else
{
zerosLeft = H264Const.totalZeros16[totalCoeffx - 1].readVLC(inb);
}
}
else
{
zerosLeft = 0;
}
int[] runs = new int[totalCoeffx];
int r;
for (r = 0; r < totalCoeffx - 1 && zerosLeft > 0; r++)
{
int run = H264Const.run[Math.Min(6, zerosLeft - 1)].readVLC(inb);
zerosLeft -= run;
runs[r] = run;
}
runs[r] = zerosLeft;
for (int j = totalCoeffx - 1, cn = 0; j >= 0 && cn < nCoeff; j--, cn++)
{
cn += runs[j];
coeffLevel[zigzag[cn + firstCoeff]] = level[j];
}
}
// System.out.print("[");
// for (int i = 0; i < nCoeff; i++)
// System.out.print(coeffLevel[i + firstCoeff] + ", ");
// System.out.println("]");
return(coeffToken);
}
public SliceHeader readPart2(SliceHeader sh, NALUnit nalUnit, SeqParameterSet sps, PictureParameterSet pps,
BitReader inb)
{
sh.pps = pps;
sh.sps = sps;
sh.frame_num = CAVLCReader.readU(inb, sps.log2_max_frame_num_minus4 + 4, "SH: frame_num");
if (!sps.frame_mbs_only_flag)
{
sh.field_pic_flag = CAVLCReader.readBool(inb, "SH: field_pic_flag");
if (sh.field_pic_flag)
{
sh.bottom_field_flag = CAVLCReader.readBool(inb, "SH: bottom_field_flag");
}
}
if (nalUnit.type == NALUnitType.IDR_SLICE)
{
sh.idr_pic_id = CAVLCReader.readUE(inb, "SH: idr_pic_id");
}
if (sps.pic_order_cnt_type == 0)
{
sh.pic_order_cnt_lsb = CAVLCReader.readU(inb, 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 = CAVLCReader.readSE(inb, "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] = CAVLCReader.readSE(inb, "SH: delta_pic_order_cnt[0]");
if (pps.pic_order_present_flag && !sps.field_pic_flag)
{
sh.delta_pic_order_cnt[1] = CAVLCReader.readSE(inb, "SH: delta_pic_order_cnt[1]");
}
}
if (pps.redundant_pic_cnt_present_flag)
{
sh.redundant_pic_cnt = CAVLCReader.readUE(inb, "SH: redundant_pic_cnt");
}
if (sh.slice_type == SliceType.B)
{
sh.direct_spatial_mv_pred_flag = CAVLCReader.readBool(inb, "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 = CAVLCReader.readBool(inb, "SH: num_ref_idx_active_override_flag");
if (sh.num_ref_idx_active_override_flag)
{
sh.num_ref_idx_active_minus1[0] = CAVLCReader.readUE(inb, "SH: num_ref_idx_l0_active_minus1");
if (sh.slice_type == SliceType.B)
{
sh.num_ref_idx_active_minus1[1] = CAVLCReader.readUE(inb, "SH: num_ref_idx_l1_active_minus1");
}
}
}
readRefPicListReorderinbg(sh, inb);
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, inb);
}
if (nalUnit.nal_ref_idc != 0)
{
readDecoderPicMarkinbg(nalUnit, sh, inb);
}
if (pps.entropy_coding_mode_flag && sh.slice_type.isInter())
{
sh.cabac_init_idc = CAVLCReader.readUE(inb, "SH: cabac_inbit_idc");
}
sh.slice_qp_delta = CAVLCReader.readSE(inb, "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 = CAVLCReader.readBool(inb, "SH: sp_for_switch_flag");
}
sh.slice_qs_delta = CAVLCReader.readSE(inb, "SH: slice_qs_delta");
}
if (pps.deblocking_filter_control_present_flag)
{
sh.disable_deblocking_filter_idc = CAVLCReader.readUE(inb, "SH: disable_deblockinbg_filter_idc");
if (sh.disable_deblocking_filter_idc != 1)
{
sh.slice_alpha_c0_offset_div2 = CAVLCReader.readSE(inb, "SH: slice_alpha_c0_offset_div2");
sh.slice_beta_offset_div2 = CAVLCReader.readSE(inb, "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 = Utility.getPicHeightInMbs(sps) * (sps.pic_width_in_mbs_minus1 + 1)
/ (pps.slice_group_change_rate_minus1 + 1);
if ((Utility.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 = CAVLCReader.readU(inb, len, "SH: slice_group_change_cycle");
}
return(sh);
}
