private void writeOffsetWeight(SliceHeader sliceHeader, BitWriter writer, int list)
{
SeqParameterSet sps = sliceHeader.sps;
int defaultLW = 1 << sliceHeader.pred_weight_table.luma_log2_weight_denom;
int defaultCW = 1 << sliceHeader.pred_weight_table.chroma_log2_weight_denom;
for (int i = 0; i < sliceHeader.pred_weight_table.luma_weight[list].Length; i++)
{
bool flagLuma = sliceHeader.pred_weight_table.luma_weight[list][i] != defaultLW ||
sliceHeader.pred_weight_table.luma_offset[list][i] != 0;
CAVLCWriter.writeBool(writer, flagLuma, "SH: luma_weight_l0_flag");
if (flagLuma)
{
CAVLCWriter.writeSE(writer, sliceHeader.pred_weight_table.luma_weight[list][i], "SH: luma_weight_l" + list);
CAVLCWriter.writeSE(writer, sliceHeader.pred_weight_table.luma_offset[list][i], "SH: luma_offset_l" + list);
}
if (sps.chroma_format_idc != ColorSpace.MONO)
{
bool flagChroma = sliceHeader.pred_weight_table.chroma_weight[list][0][i] != defaultCW ||
sliceHeader.pred_weight_table.chroma_offset[list][0][i] != 0 ||
sliceHeader.pred_weight_table.chroma_weight[list][1][i] != defaultCW ||
sliceHeader.pred_weight_table.chroma_offset[list][1][i] != 0;
CAVLCWriter.writeBool(writer, flagChroma, "SH: chroma_weight_l0_flag");
if (flagChroma)
{
for (int j = 0; j < 2; j++)
{
CAVLCWriter.writeSE(writer, sliceHeader.pred_weight_table.chroma_weight[list][j][i], "SH: chroma_weight_l" + list);
CAVLCWriter.writeSE(writer, sliceHeader.pred_weight_table.chroma_offset[list][j][i], "SH: chroma_offset_l" + list);
}
}
}
}
}
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));
}
private void writeDecRefPicMarking(SliceHeader sliceHeader, bool idrSlice, BitWriter writer)
{
if (idrSlice)
{
RefPicMarkingIDR drpmidr = sliceHeader.refPicMarkingIDR;
CAVLCWriter.writeBool(writer, drpmidr.isDiscardDecodedPics(), "SH: no_output_of_prior_pics_flag");
CAVLCWriter.writeBool(writer, drpmidr.isUseForlongTerm(), "SH: long_term_reference_flag");
}
else
{
CAVLCWriter.writeBool(writer, sliceHeader.refPicMarkingNonIDR != null, "SH: adaptive_ref_pic_marking_mode_flag");
if (sliceHeader.refPicMarkingNonIDR != null)
{
RefPicMarking drpmidr = sliceHeader.refPicMarkingNonIDR;
foreach (var mmop in drpmidr.getInstructions())
{
switch (mmop.getType())
{
case RefPicMarking.InstrType.REMOVE_SHORT:
CAVLCWriter.writeUE(writer, 1, "SH: memory_management_control_operation");
CAVLCWriter.writeUE(writer, mmop.getArg1() - 1, "SH: difference_of_pic_nums_minus1");
break;
case RefPicMarking.InstrType.REMOVE_LONG:
CAVLCWriter.writeUE(writer, 2, "SH: memory_management_control_operation");
CAVLCWriter.writeUE(writer, mmop.getArg1(), "SH: long_term_pic_num");
break;
case RefPicMarking.InstrType.CONVERT_INTO_LONG:
CAVLCWriter.writeUE(writer, 3, "SH: memory_management_control_operation");
CAVLCWriter.writeUE(writer, mmop.getArg1() - 1, "SH: difference_of_pic_nums_minus1");
CAVLCWriter.writeUE(writer, mmop.getArg2(), "SH: long_term_frame_idx");
break;
case RefPicMarking.InstrType.TRUNK_LONG:
CAVLCWriter.writeUE(writer, 4, "SH: memory_management_control_operation");
CAVLCWriter.writeUE(writer, mmop.getArg1() + 1, "SH: max_long_term_frame_idx_plus1");
break;
case RefPicMarking.InstrType.CLEAR:
CAVLCWriter.writeUE(writer, 5, "SH: memory_management_control_operation");
break;
case RefPicMarking.InstrType.MARK_LONG:
CAVLCWriter.writeUE(writer, 6, "SH: memory_management_control_operation");
CAVLCWriter.writeUE(writer, mmop.getArg1(), "SH: long_term_frame_idx");
break;
}
}
CAVLCWriter.writeUE(writer, 0, "SH: memory_management_control_operation");
}
}
}
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));
}
private void writeRefPicListReordering(SliceHeader sliceHeader, BitWriter writer)
{
if (sliceHeader.slice_type.isInter())
{
CAVLCWriter.writeBool(writer, sliceHeader.refPicReordering[0] != null, "SH: ref_pic_list_reordering_flag_l0");
writeReorderingList(sliceHeader.refPicReordering[0], writer);
}
if (sliceHeader.slice_type == SliceType.B)
{
CAVLCWriter.writeBool(writer, sliceHeader.refPicReordering[1] != null, "SH: ref_pic_list_reordering_flag_l1");
writeReorderingList(sliceHeader.refPicReordering[1], writer);
}
}
private void fillHorizontalEdge(Picture pic, int comp, int mbAddr, int[][] bs)
{
SliceHeader sh = shs[mbAddr];
int mbWidth = sh.sps.pic_width_in_mbs_minus1 + 1;
int alpha = sh.slice_alpha_c0_offset_div2 << 1;
int beta = sh.slice_beta_offset_div2 << 1;
int mbX = mbAddr % mbWidth;
int mbY = mbAddr / mbWidth;
bool topAvailable = mbY > 0 && (sh.disable_deblocking_filter_idc != 2 || shs[mbAddr - mbWidth] == sh);
int curQp = mbQps[comp][mbAddr];
int cW = 2 - pic.getColor().compWidth[comp];
int cH = 2 - pic.getColor().compHeight[comp];
if (topAvailable)
{
int topQp = mbQps[comp][mbAddr - mbWidth];
int avgQp = (topQp + curQp + 1) >> 1;
for (int blkX = 0; blkX < 4; blkX++)
{
int thisBlkX = (mbX << 2) + blkX;
int thisBlkY = (mbY << 2);
filterBlockEdgeHoris(pic, comp, thisBlkX << cW, thisBlkY << cH, getIdxAlpha(alpha, avgQp),
getIdxBeta(beta, avgQp), bs[0][blkX], 1 << cW);
}
}
bool skip4x4 = comp == 0 && tr8x8Used[mbAddr] || cH == 1;
for (int blkY = 1; blkY < 4; blkY++)
{
if (skip4x4 && (blkY & 1) == 1)
{
continue;
}
for (int blkX = 0; blkX < 4; blkX++)
{
int thisBlkX = (mbX << 2) + blkX;
int thisBlkY = (mbY << 2) + blkY;
filterBlockEdgeHoris(pic, comp, thisBlkX << cW, thisBlkY << cH, getIdxAlpha(alpha, curQp),
getIdxBeta(beta, curQp), bs[blkY][blkX], 1 << cW);
}
}
}
public SliceHeader readPart1(BitReader inb)
{
SliceHeader sh = new SliceHeader();
sh.first_mb_in_slice = CAVLCReader.readUE(inb, "SH: first_mb_inb_slice");
int sh_type = CAVLCReader.readUE(inb, "SH: slice_type");
sh.slice_type = (SliceType)(sh_type % 5);
sh.slice_type_restr = (sh_type / 5) > 0;
sh.pic_parameter_set_id = CAVLCReader.readUE(inb, "SH: pic_parameter_set_id");
return(sh);
}
private bool hasMMCO5(SliceHeader firstSliceHeader, NALUnit firstNu)
{
if (firstNu.type != NALUnitType.IDR_SLICE && firstSliceHeader.refPicMarkingNonIDR != null)
{
nVideo.Codecs.H264.RefPicMarking.Instruction[] instructions = firstSliceHeader.refPicMarkingNonIDR.getInstructions();
foreach (var instruction in instructions)
{
if (instruction.getType() == nVideo.Codecs.H264.RefPicMarking.InstrType.CLEAR)
{
return(true);
}
}
}
return(false);
}
private void writePredWeightTable(SliceHeader sliceHeader, BitWriter writer)
{
SeqParameterSet sps = sliceHeader.sps;
CAVLCWriter.writeUE(writer, sliceHeader.pred_weight_table.luma_log2_weight_denom, "SH: luma_log2_weight_denom");
if (sps.chroma_format_idc != ColorSpace.MONO)
{
CAVLCWriter.writeUE(writer, sliceHeader.pred_weight_table.chroma_log2_weight_denom, "SH: chroma_log2_weight_denom");
}
writeOffsetWeight(sliceHeader, writer, 0);
if (sliceHeader.slice_type == SliceType.B)
{
writeOffsetWeight(sliceHeader, writer, 1);
}
}
public int calcPOC(SliceHeader firstSliceHeader, NALUnit firstNu)
{
switch (firstSliceHeader.sps.pic_order_cnt_type)
{
case 0:
return(calcPOC0(firstSliceHeader, firstNu));
case 1:
return(calcPOC1(firstSliceHeader, firstNu));
case 2:
return(calcPOC2(firstSliceHeader, firstNu));
default:
throw new Exception("POC no!!!");
}
}
private int calcPOC0(SliceHeader firstSliceHeader, NALUnit firstNu)
{
if (firstNu.type == NALUnitType.IDR_SLICE)
{
prevPOCMsb = prevPOCLsb = 0;
}
int maxPOCLsbDiv2 = 1 << (firstSliceHeader.sps.log2_max_pic_order_cnt_lsb_minus4 + 3), maxPOCLsb = maxPOCLsbDiv2 << 1;
int POCLsb = firstSliceHeader.pic_order_cnt_lsb;
int POCMsb, POC;
if ((POCLsb < prevPOCLsb) && ((prevPOCLsb - POCLsb) >= maxPOCLsbDiv2))
{
POCMsb = prevPOCMsb + maxPOCLsb;
}
else if ((POCLsb > prevPOCLsb) && ((POCLsb - prevPOCLsb) > maxPOCLsbDiv2))
{
POCMsb = prevPOCMsb - maxPOCLsb;
}
else
{
POCMsb = prevPOCMsb;
}
POC = POCMsb + POCLsb;
if (firstNu.nal_ref_idc > 0)
{
if (hasMMCO5(firstSliceHeader, firstNu))
{
prevPOCMsb = 0;
prevPOCLsb = POC;
}
else
{
prevPOCMsb = POCMsb;
prevPOCLsb = POCLsb;
}
}
return(POC);
}
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 readRefPicListReorderinbg(SliceHeader sh, BitReader inb)
{
sh.refPicReordering = new int[2][][];
// System.out.println(i++);
if (sh.slice_type.isInter())
{
bool ref_pic_list_reorderinbg_flag_l0 = CAVLCReader.readBool(inb, "SH: ref_pic_list_reorderinbg_flag_l0");
if (ref_pic_list_reorderinbg_flag_l0)
{
sh.refPicReordering[0] = readReorderinbgEntries(inb);
}
}
if (sh.slice_type == SliceType.B)
{
bool ref_pic_list_reorderinbg_flag_l1 = CAVLCReader.readBool(inb, "SH: ref_pic_list_reorderinbg_flag_l1");
if (ref_pic_list_reorderinbg_flag_l1)
{
sh.refPicReordering[1] = readReorderinbgEntries(inb);
}
}
}
private void calcBsH(Picture pic, int mbAddr, int[][] bs)
{
SliceHeader sh = shs[mbAddr];
int mbWidth = sh.sps.pic_width_in_mbs_minus1 + 1;
int mbX = mbAddr % mbWidth;
int mbY = mbAddr / mbWidth;
bool topAvailable = mbY > 0 && (sh.disable_deblocking_filter_idc != 2 || shs[mbAddr - mbWidth] == sh);
bool thisIntra = mbTypes[mbAddr] != null && mbTypes[mbAddr].isIntra();
if (topAvailable)
{
bool topIntra = mbTypes[mbAddr - mbWidth] != null && mbTypes[mbAddr - mbWidth].isIntra();
for (int blkX = 0; blkX < 4; blkX++)
{
int thisBlkX = (mbX << 2) + blkX;
int thisBlkY = (mbY << 2);
bs[0][blkX] = calcBoundaryStrenth(true, topIntra, thisIntra, nCoeff[thisBlkY][thisBlkX],
nCoeff[thisBlkY - 1][thisBlkX], mvs[0][thisBlkY][thisBlkX], mvs[0][thisBlkY - 1][thisBlkX],
mvs[1][thisBlkY][thisBlkX], mvs[1][thisBlkY - 1][thisBlkX], mbAddr, mbAddr - mbWidth);
}
}
for (int blkY = 1; blkY < 4; blkY++)
{
for (int blkX = 0; blkX < 4; blkX++)
{
int thisBlkX = (mbX << 2) + blkX;
int thisBlkY = (mbY << 2) + blkY;
bs[blkY][blkX] = calcBoundaryStrenth(false, thisIntra, thisIntra, nCoeff[thisBlkY][thisBlkX],
nCoeff[thisBlkY - 1][thisBlkX], mvs[0][thisBlkY][thisBlkX], mvs[0][thisBlkY - 1][thisBlkX],
mvs[1][thisBlkY][thisBlkX], mvs[1][thisBlkY - 1][thisBlkX], mbAddr, mbAddr);
}
}
}
private bool validSh(SliceHeader sh)
{
return(sh.first_mb_in_slice == 0 && sh.pic_parameter_set_id < 2);
}
public Prediction(SliceHeader sh)
{
this.sh = sh;
}
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 int calcPOC1(SliceHeader firstSliceHeader, NALUnit firstNu)
{
return(firstSliceHeader.frame_num << 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 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);
}
// static int i = 0;
private static void readDecoderPicMarkinbg(NALUnit nalUnit, SliceHeader sh, BitReader inb)
{
if (nalUnit.type == NALUnitType.IDR_SLICE)
{
bool no_output_of_prior_pics_flag = CAVLCReader.readBool(inb, "SH: no_output_of_prior_pics_flag");
bool long_term_reference_flag = CAVLCReader.readBool(inb, "SH: long_term_reference_flag");
sh.refPicMarkingIDR = new nVideo.Codecs.H264.RefPicMarkingIDR(no_output_of_prior_pics_flag, long_term_reference_flag);
}
else
{
bool adaptive_ref_pic_markinbg_mode_flag = CAVLCReader.readBool(inb, "SH: adaptive_ref_pic_markinbg_mode_flag");
if (adaptive_ref_pic_markinbg_mode_flag)
{
List <nVideo.Codecs.H264.RefPicMarking.Instruction> mmops = new List <nVideo.Codecs.H264.RefPicMarking.Instruction>();
int memory_management_control_operation;
do
{
memory_management_control_operation = CAVLCReader.readUE(inb, "SH: memory_management_control_operation");
nVideo.Codecs.H264.RefPicMarking.Instruction inbstr = null;
switch (memory_management_control_operation)
{
case 1:
inbstr = new nVideo.Codecs.H264.RefPicMarking.Instruction(nVideo.Codecs.H264.RefPicMarking.InstrType.REMOVE_SHORT, CAVLCReader.readUE(inb,
"SH: difference_of_pic_nums_minus1") + 1, 0);
break;
case 2:
inbstr = new nVideo.Codecs.H264.RefPicMarking.Instruction(nVideo.Codecs.H264.RefPicMarking.InstrType.REMOVE_LONG,
CAVLCReader.readUE(inb, "SH: long_term_pic_num"), 0);
break;
case 3:
inbstr = new nVideo.Codecs.H264.RefPicMarking.Instruction(nVideo.Codecs.H264.RefPicMarking.InstrType.CONVERT_INTO_LONG, CAVLCReader.readUE(inb,
"SH: difference_of_pic_nums_minus1") + 1, CAVLCReader.readUE(inb, "SH: long_term_frame_idx"));
break;
case 4:
inbstr = new nVideo.Codecs.H264.RefPicMarking.Instruction(nVideo.Codecs.H264.RefPicMarking.InstrType.TRUNK_LONG, CAVLCReader.readUE(inb,
"SH: max_long_term_frame_idx_plus1") - 1, 0);
break;
case 5:
inbstr = new nVideo.Codecs.H264.RefPicMarking.Instruction(nVideo.Codecs.H264.RefPicMarking.InstrType.CLEAR, 0, 0);
break;
case 6:
inbstr = new nVideo.Codecs.H264.RefPicMarking.Instruction(nVideo.Codecs.H264.RefPicMarking.InstrType.MARK_LONG,
CAVLCReader.readUE(inb, "SH: long_term_frame_idx"), 0);
break;
}
if (inbstr != null)
{
mmops.Add(inbstr);
}
} while (memory_management_control_operation != 0);
sh.refPicMarkingNonIDR = new RefPicMarking(mmops.ToArray());
}
}
}
protected abstract void tweak(SliceHeader sh);
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 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);
}