public override int probe(MemoryStream data)
{
bool avalidSps = false, avalidPps = false, avalidSh = false;
foreach (var nalUnit in Utility.splitFrame(data.duplicate()))
{
NALUnit marker = NALUnit.read(nalUnit);
if (marker.type == NALUnitType.IDR_SLICE || marker.type == NALUnitType.NON_IDR_SLICE)
{
BitReader reader = new BitReader(nalUnit);
avalidSh = validSh(new SliceHeaderReader().readPart1(reader));
break;
}
else if (marker.type == NALUnitType.SPS)
{
avalidSps = validSps(SeqParameterSet.read(nalUnit));
}
else if (marker.type == NALUnitType.PPS)
{
avalidPps = validPps(PictureParameterSet.read(nalUnit));
}
}
return((avalidSh ? 60 : 0) + (avalidSps ? 20 : 0) + (avalidPps ? 20 : 0));
}
private SliceHeader part2(System.IO.MemoryStream iss, System.IO.MemoryStream os, NALUnit nu, SeqParameterSet sps,
PictureParameterSet pps, System.IO.MemoryStream nal, BitReader reader, SliceHeader sh)
{
BitWriter writer = new BitWriter(os);
shr.readPart2(sh, nu, sps, pps, reader);
tweak(sh);
shw.write(sh, nu.type == NALUnitType.IDR_SLICE, nu.nal_ref_idc, writer);
if (pps.entropy_coding_mode_flag)
{
copyDataCABAC(iss, os, reader, writer);
}
else
{
copyDataCAVLC(iss, os, reader, writer);
}
nal.limit(os.Position);
Utility.escapeNAL(nal);
os.position(nal.limit());
return(sh);
}
public static PictureParameterSet readPPS(System.IO.MemoryStream data)
{
System.IO.MemoryStream input = data.duplicate();
Utility.unescapeNAL(input);
PictureParameterSet pps = PictureParameterSet.read(input);
return(pps);
}
public static System.IO.MemoryStream writePPS(PictureParameterSet pps, int approxSize)
{
System.IO.MemoryStream output = new System.IO.MemoryStream(approxSize + 8);
pps.write(output);
output.flip();
Utility.escapeNAL(output);
return(output);
}
public static SampleEntry createMOVSampleEntry(SeqParameterSet initSPS, PictureParameterSet initPPS)
{
System.IO.MemoryStream bb1 = new System.IO.MemoryStream(512), bb2 = new System.IO.MemoryStream(512);
initSPS.write(bb1);
initPPS.write(bb2);
bb1.flip();
bb2.flip();
return(createMOVSampleEntry(new System.IO.MemoryStream[] { bb1 }.ToList(), new System.IO.MemoryStream[] { bb2 }.ToList()));
}
public void addPps(List <MemoryStream> ppsList)
{
foreach (var byteBuffer in ppsList)
{
MemoryStream dup = byteBuffer.duplicate();
Utility.unescapeNAL(dup);
PictureParameterSet p = PictureParameterSet.read(dup);
pps.Add(p.pic_parameter_set_id, p);
}
}
public CAVLC(SeqParameterSet sps, PictureParameterSet pps, int mbW, int mbH)
{
this.color = sps.chroma_format_idc;
this.chromaDCVLC = codeTableChromaDC();
this.mbWidth = sps.pic_width_in_mbs_minus1 + 1;
this.mbMask = (1 << mbH) - 1;
tokensLeft = new int[4];
tokensTop = new int[mbWidth << mbW];
}
public SliceHeader run(System.IO.MemoryStream iss, System.IO.MemoryStream os, NALUnit nu)
{
System.IO.MemoryStream nal = os.duplicate();
Utility.unescapeNAL(iss);
BitReader reader = new BitReader(iss);
SliceHeader sh = shr.readPart1(reader);
PictureParameterSet pp = findPPS(pps, sh.pic_parameter_set_id);
return(part2(iss, os, nu, findSPS(sps, pp.pic_parameter_set_id), pp, nal, reader, sh));
}
public Frame decodeFrame(List <MemoryStream> nalUnits, int[][] buffer)
{
Frame result = null;
foreach (var nalUnit in nalUnits)
{
NALUnit marker = NALUnit.read(nalUnit);
Utility.unescapeNAL(nalUnit);
switch (marker.type.getValue())
{
case 1:
case 5:
if (result == null)
{
result = init(buffer, nalUnit, marker);
}
decoder.decode(nalUnit, marker);
break;
case 8:
SeqParameterSet _sps = SeqParameterSet.read(nalUnit);
vdecoder.sps.Add(_sps.seq_parameter_set_id, _sps);
break;
case 7:
PictureParameterSet _pps = PictureParameterSet.read(nalUnit);
vdecoder.pps.Add(_pps.pic_parameter_set_id, _pps);
break;
default:
break;
}
}
filter.deblockFrame(result);
updateReferences(result);
return(result);
}
private Frame init(int[][] buffer, MemoryStream segment, NALUnit marker)
{
firstNu = marker;
shr = new SliceHeaderReader();
BitReader br = new BitReader(segment.duplicate());
firstSliceHeader = shr.readPart1(br);
activePps = vdecoder.pps[firstSliceHeader.pic_parameter_set_id];
activeSps = vdecoder.sps[activePps.seq_parameter_set_id];
shr.readPart2(firstSliceHeader, marker, activeSps, activePps, br);
int picWidthInMbs = activeSps.pic_width_in_mbs_minus1 + 1;
int picHeightInMbs = Utility.getPicHeightInMbs(activeSps);
int[][] nCoeff = (int[][])Array.CreateInstance(typeof(int), new int[] { picHeightInMbs << 2, picWidthInMbs << 2 }); //new int[picHeightInMbs << 2][picWidthInMbs << 2];
mvs = (int[][][][])Array.CreateInstance(typeof(int), new int[] { 2, picHeightInMbs << 2, picWidthInMbs << 2, 3 }); //new int[2][picHeightInMbs << 2][picWidthInMbs << 2][3];
MBType[] mbTypes = new MBType[picHeightInMbs * picWidthInMbs];
bool[] tr8x8Used = new bool[picHeightInMbs * picWidthInMbs];
int[][] mbQps = (int[][])Array.CreateInstance(typeof(int), new int[] { 3, picHeightInMbs * picWidthInMbs });//new int[3][picHeightInMbs * picWidthInMbs];
SliceHeader[] shs = new SliceHeader[picHeightInMbs * picWidthInMbs];
Frame[][][] refsUsed = new Frame[picHeightInMbs * picWidthInMbs][][];
if (vdecoder.sRefs == null)
{
vdecoder.sRefs = new Frame[1 << (firstSliceHeader.sps.log2_max_frame_num_minus4 + 4)];
vdecoder.lRefs = new Dictionary <int, Frame>();
}
Frame result = createFrame(activeSps, buffer, firstSliceHeader.frame_num, mvs, refsUsed,
vdecoder.poc.calcPOC(firstSliceHeader, firstNu));
decoder = new SliceDecoder(activeSps, activePps, nCoeff, mvs, mbTypes, mbQps, shs, tr8x8Used, refsUsed,
result, vdecoder.sRefs, vdecoder.lRefs);
decoder.setDebug(vdecoder.debug);
filter = new DeblockingFilter(picWidthInMbs, activeSps.bit_depth_chroma_minus8 + 8, nCoeff, mvs, mbTypes,
mbQps, shs, tr8x8Used, refsUsed);
return(result);
}
private static void readPredWeightTable(SeqParameterSet sps, PictureParameterSet pps, SliceHeader sh, BitReader inb)
{
sh.pred_weight_table = new PredictionWeightTable();
int[] numRefsminus1 = sh.num_ref_idx_active_override_flag ? sh.num_ref_idx_active_minus1
: pps.num_ref_idx_active_minus1;
int[] nr = new int[] { numRefsminus1[0] + 1, numRefsminus1[1] + 1 };
sh.pred_weight_table.luma_log2_weight_denom = CAVLCReader.readUE(inb, "SH: luma_log2_weight_denom");
if (sps.chroma_format_idc != ColorSpace.MONO)
{
sh.pred_weight_table.chroma_log2_weight_denom = CAVLCReader.readUE(inb, "SH: chroma_log2_weight_denom");
}
int defaultLW = 1 << sh.pred_weight_table.luma_log2_weight_denom;
int defaultCW = 1 << sh.pred_weight_table.chroma_log2_weight_denom;
for (int list = 0; list < 2; list++)
{
sh.pred_weight_table.luma_weight[list] = new int[nr[list]];
sh.pred_weight_table.luma_offset[list] = new int[nr[list]];
sh.pred_weight_table.chroma_weight[list] = (int[][])System.Array.CreateInstance(typeof(int), new int[] { 2, nr[list] });
sh.pred_weight_table.chroma_offset[list] = (int[][])System.Array.CreateInstance(typeof(int), new int[] { 2, nr[list] });
for (int i = 0; i < nr[list]; i++)
{
sh.pred_weight_table.luma_weight[list][i] = defaultLW;
sh.pred_weight_table.luma_offset[list][i] = 0;
sh.pred_weight_table.chroma_weight[list][0][i] = defaultCW;
sh.pred_weight_table.chroma_offset[list][0][i] = 0;
sh.pred_weight_table.chroma_weight[list][1][i] = defaultCW;
sh.pred_weight_table.chroma_offset[list][1][i] = 0;
}
}
readWeightOffset(sps, pps, sh, inb, nr, 0);
if (sh.slice_type == SliceType.B)
{
readWeightOffset(sps, pps, sh, inb, nr, 1);
}
}
private static void readWeightOffset(SeqParameterSet sps, PictureParameterSet pps, SliceHeader sh, BitReader inb,
int[] numRefs, int list)
{
for (int i = 0; i < numRefs[list]; i++)
{
bool luma_weight_l0_flag = CAVLCReader.readBool(inb, "SH: luma_weight_l0_flag");
if (luma_weight_l0_flag)
{
sh.pred_weight_table.luma_weight[list][i] = CAVLCReader.readSE(inb, "SH: weight");
sh.pred_weight_table.luma_offset[list][i] = CAVLCReader.readSE(inb, "SH: offset");
}
if (sps.chroma_format_idc != ColorSpace.MONO)
{
bool chroma_weight_l0_flag = CAVLCReader.readBool(inb, "SH: chroma_weight_l0_flag");
if (chroma_weight_l0_flag)
{
sh.pred_weight_table.chroma_weight[list][0][i] = CAVLCReader.readSE(inb, "SH: weight");
sh.pred_weight_table.chroma_offset[list][0][i] = CAVLCReader.readSE(inb, "SH: offset");
sh.pred_weight_table.chroma_weight[list][1][i] = CAVLCReader.readSE(inb, "SH: weight");
sh.pred_weight_table.chroma_offset[list][1][i] = CAVLCReader.readSE(inb, "SH: offset");
}
}
}
}
public void write(SliceHeader sliceHeader, bool idrSlice, int nalRefIdc, BitWriter writer)
{
SeqParameterSet sps = sliceHeader.sps;
PictureParameterSet pps = sliceHeader.pps;
CAVLCWriter.writeUE(writer, sliceHeader.first_mb_in_slice, "SH: first_mb_in_slice");
CAVLCWriter.writeUE(writer, (int)sliceHeader.slice_type + (sliceHeader.slice_type_restr ? 5 : 0), "SH: slice_type");
CAVLCWriter.writeUE(writer, sliceHeader.pic_parameter_set_id, "SH: pic_parameter_set_id");
CAVLCWriter.writeU(writer, sliceHeader.frame_num, sps.log2_max_frame_num_minus4 + 4, "SH: frame_num");
if (!sps.frame_mbs_only_flag)
{
CAVLCWriter.writeBool(writer, sliceHeader.field_pic_flag, "SH: field_pic_flag");
if (sliceHeader.field_pic_flag)
{
CAVLCWriter.writeBool(writer, sliceHeader.bottom_field_flag, "SH: bottom_field_flag");
}
}
if (idrSlice)
{
CAVLCWriter.writeUE(writer, sliceHeader.idr_pic_id, "SH: idr_pic_id");
}
if (sps.pic_order_cnt_type == 0)
{
CAVLCWriter.writeU(writer, sliceHeader.pic_order_cnt_lsb, sps.log2_max_pic_order_cnt_lsb_minus4 + 4);
if (pps.pic_order_present_flag && !sps.field_pic_flag)
{
CAVLCWriter.writeSE(writer, sliceHeader.delta_pic_order_cnt_bottom, "SH: delta_pic_order_cnt_bottom");
}
}
if (sps.pic_order_cnt_type == 1 && !sps.delta_pic_order_always_zero_flag)
{
CAVLCWriter.writeSE(writer, sliceHeader.delta_pic_order_cnt[0], "SH: delta_pic_order_cnt");
if (pps.pic_order_present_flag && !sps.field_pic_flag)
{
CAVLCWriter.writeSE(writer, sliceHeader.delta_pic_order_cnt[1], "SH: delta_pic_order_cnt");
}
}
if (pps.redundant_pic_cnt_present_flag)
{
CAVLCWriter.writeUE(writer, sliceHeader.redundant_pic_cnt, "SH: redundant_pic_cnt");
}
if (sliceHeader.slice_type == SliceType.B)
{
CAVLCWriter.writeBool(writer, sliceHeader.direct_spatial_mv_pred_flag, "SH: direct_spatial_mv_pred_flag");
}
if (sliceHeader.slice_type == SliceType.P || sliceHeader.slice_type == SliceType.SP ||
sliceHeader.slice_type == SliceType.B)
{
CAVLCWriter.writeBool(writer, sliceHeader.num_ref_idx_active_override_flag, "SH: num_ref_idx_active_override_flag");
if (sliceHeader.num_ref_idx_active_override_flag)
{
CAVLCWriter.writeUE(writer, sliceHeader.num_ref_idx_active_minus1[0], "SH: num_ref_idx_l0_active_minus1");
if (sliceHeader.slice_type == SliceType.B)
{
CAVLCWriter.writeUE(writer, sliceHeader.num_ref_idx_active_minus1[1], "SH: num_ref_idx_l1_active_minus1");
}
}
}
writeRefPicListReordering(sliceHeader, writer);
if ((pps.weighted_pred_flag && (sliceHeader.slice_type == SliceType.P || sliceHeader.slice_type == SliceType.SP)) ||
(pps.weighted_bipred_idc == 1 && sliceHeader.slice_type == SliceType.B))
{
writePredWeightTable(sliceHeader, writer);
}
if (nalRefIdc != 0)
{
writeDecRefPicMarking(sliceHeader, idrSlice, writer);
}
if (pps.entropy_coding_mode_flag && sliceHeader.slice_type.isInter())
{
CAVLCWriter.writeUE(writer, sliceHeader.cabac_init_idc, "SH: cabac_init_idc");
}
CAVLCWriter.writeSE(writer, sliceHeader.slice_qp_delta, "SH: slice_qp_delta");
if (sliceHeader.slice_type == SliceType.SP || sliceHeader.slice_type == SliceType.SI)
{
if (sliceHeader.slice_type == SliceType.SP)
{
CAVLCWriter.writeBool(writer, sliceHeader.sp_for_switch_flag, "SH: sp_for_switch_flag");
}
CAVLCWriter.writeSE(writer, sliceHeader.slice_qs_delta, "SH: slice_qs_delta");
}
if (pps.deblocking_filter_control_present_flag)
{
CAVLCWriter.writeUE(writer, sliceHeader.disable_deblocking_filter_idc, "SH: disable_deblocking_filter_idc");
if (sliceHeader.disable_deblocking_filter_idc != 1)
{
CAVLCWriter.writeSE(writer, sliceHeader.slice_alpha_c0_offset_div2, "SH: slice_alpha_c0_offset_div2");
CAVLCWriter.writeSE(writer, sliceHeader.slice_beta_offset_div2, "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 = (sps.pic_height_in_map_units_minus1 + 1) * (sps.pic_width_in_mbs_minus1 + 1)
/ (pps.slice_group_change_rate_minus1 + 1);
if (((sps.pic_height_in_map_units_minus1 + 1) * (sps.pic_width_in_mbs_minus1 + 1))
% (pps.slice_group_change_rate_minus1 + 1) > 0)
{
len += 1;
}
len = CeilLog2(len + 1);
CAVLCWriter.writeU(writer, sliceHeader.slice_group_change_cycle, len);
}
}
private bool validPps(PictureParameterSet pps)
{
return(pps.pic_init_qp_minus26 <= 26 && pps.seq_parameter_set_id <= 2 && pps.pic_parameter_set_id <= 2);
}
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);
}
public SliceHeader run(System.IO.MemoryStream iss, System.IO.MemoryStream os, NALUnit nu, SeqParameterSet sps, PictureParameterSet pps)
{
System.IO.MemoryStream nal = os.duplicate();
Utility.unescapeNAL(iss);
BitReader reader = new BitReader(iss);
SliceHeader sh = shr.readPart1(reader);
return(part2(iss, os, nu, sps, pps, nal, reader, sh));
}
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);
}
//@Override
public override bool Equals(Object obj)
{
if (this == obj)
{
return(true);
}
if (obj == null)
{
return(false);
}
//if (getClass() != obj.getClass())
//return false;
PictureParameterSet other = (PictureParameterSet)obj;
if (!(bottom_right == other.bottom_right))
{
return(false);
}
if (chroma_qp_index_offset != other.chroma_qp_index_offset)
{
return(false);
}
if (constrained_intra_pred_flag != other.constrained_intra_pred_flag)
{
return(false);
}
if (deblocking_filter_control_present_flag != other.deblocking_filter_control_present_flag)
{
return(false);
}
if (entropy_coding_mode_flag != other.entropy_coding_mode_flag)
{
return(false);
}
if (extended == null)
{
if (other.extended != null)
{
return(false);
}
}
else if (!extended.Equals(other.extended))
{
return(false);
}
if (num_ref_idx_active_minus1[0] != other.num_ref_idx_active_minus1[0])
{
return(false);
}
if (num_ref_idx_active_minus1[1] != other.num_ref_idx_active_minus1[1])
{
return(false);
}
if (num_slice_groups_minus1 != other.num_slice_groups_minus1)
{
return(false);
}
if (pic_init_qp_minus26 != other.pic_init_qp_minus26)
{
return(false);
}
if (pic_init_qs_minus26 != other.pic_init_qs_minus26)
{
return(false);
}
if (pic_order_present_flag != other.pic_order_present_flag)
{
return(false);
}
if (pic_parameter_set_id != other.pic_parameter_set_id)
{
return(false);
}
if (redundant_pic_cnt_present_flag != other.redundant_pic_cnt_present_flag)
{
return(false);
}
if (!(run_length_minus1 == other.run_length_minus1))
{
return(false);
}
if (seq_parameter_set_id != other.seq_parameter_set_id)
{
return(false);
}
if (slice_group_change_direction_flag != other.slice_group_change_direction_flag)
{
return(false);
}
if (slice_group_change_rate_minus1 != other.slice_group_change_rate_minus1)
{
return(false);
}
if (!(slice_group_id == other.slice_group_id))
{
return(false);
}
if (slice_group_map_type != other.slice_group_map_type)
{
return(false);
}
if (!(top_left == other.top_left))
{
return(false);
}
if (weighted_bipred_idc != other.weighted_bipred_idc)
{
return(false);
}
if (weighted_pred_flag != other.weighted_pred_flag)
{
return(false);
}
return(true);
}
public void mergePrediction(int refIdxL0, int refIdxL1, nVideo.Codecs.H264.H264Const.PartPred predType, int comp, int[] pred0, int[] pred1,
int off, int stride, int blkW, int blkH, int[] outs, Frame[][] refs, Frame thisFrame)
{
PictureParameterSet pps = sh.pps;
if (sh.slice_type == SliceType.P)
{
if (pps.weighted_pred_flag && sh.pred_weight_table != null)
{
PredictionWeightTable w = sh.pred_weight_table;
weight(pred0, stride, off, blkW, blkH, comp == 0 ? w.luma_log2_weight_denom
: w.chroma_log2_weight_denom, comp == 0 ? w.luma_weight[0][refIdxL0]
: w.chroma_weight[0][comp - 1][refIdxL0], comp == 0 ? w.luma_offset[0][refIdxL0]
: w.chroma_offset[0][comp - 1][refIdxL0], outs);
}
else
{
copyPrediction(pred0, stride, off, blkW, blkH, outs);
}
}
else
{
if (!pps.weighted_pred_flag || sh.pps.weighted_bipred_idc == 0 ||
(sh.pps.weighted_bipred_idc == 2 && predType != nVideo.Codecs.H264.H264Const.PartPred.Bi))
{
mergeAvg(pred0, pred1, stride, predType, off, blkW, blkH, outs);
}
else if (sh.pps.weighted_bipred_idc == 1)
{
PredictionWeightTable w = sh.pred_weight_table;
int w0 = refIdxL0 == -1 ? 0 : (comp == 0 ? w.luma_weight[0][refIdxL0]
: w.chroma_weight[0][comp - 1][refIdxL0]);
int w1 = refIdxL1 == -1 ? 0 : (comp == 0 ? w.luma_weight[1][refIdxL1]
: w.chroma_weight[1][comp - 1][refIdxL1]);
int o0 = refIdxL0 == -1 ? 0 : (comp == 0 ? w.luma_offset[0][refIdxL0]
: w.chroma_offset[0][comp - 1][refIdxL0]);
int o1 = refIdxL1 == -1 ? 0 : (comp == 0 ? w.luma_offset[1][refIdxL1]
: w.chroma_offset[1][comp - 1][refIdxL1]);
mergeWeight(pred0, pred1, stride, predType, off, blkW, blkH, comp == 0 ? w.luma_log2_weight_denom
: w.chroma_log2_weight_denom, w0, w1, o0, o1, outs);
}
else
{
int tb = CABAC.clip(thisFrame.getPOC() - refs[0][refIdxL0].getPOC(), -128, 127);
int td = CABAC.clip(refs[1][refIdxL1].getPOC() - refs[0][refIdxL0].getPOC(), -128, 127);
int w0 = 32, w1 = 32;
if (td != 0 && refs[0][refIdxL0].isShortTerm() && refs[1][refIdxL1].isShortTerm())
{
int tx = (16384 + Math.Abs(td / 2)) / td;
int dsf = CABAC.clip((tb * tx + 32) >> 6, -1024, 1023) >> 2;
if (dsf >= -64 && dsf <= 128)
{
w1 = dsf;
w0 = 64 - dsf;
}
}
mergeWeight(pred0, pred1, stride, predType, off, blkW, blkH, 5, w0, w1, 0, 0, outs);
}
}
}
