func (this *TDecEntropy) DecodeCoeff(pcCU *TLibCommon.TComDataCU, uiAbsPartIdx, uiDepth, uiWidth, uiHeight uint, bCodeDQP *bool) {
uiMinCoeffSize := pcCU.GetPic().GetMinCUWidth() * pcCU.GetPic().GetMinCUHeight()
uiLumaOffset := uiMinCoeffSize * uiAbsPartIdx
uiChromaOffset := uiLumaOffset >> 2
if !pcCU.IsIntra(uiAbsPartIdx) {
uiQtRootCbf := uint(1)
if !(pcCU.GetPartitionSize1(uiAbsPartIdx) == TLibCommon.SIZE_2Nx2N && pcCU.GetMergeFlag1(uiAbsPartIdx)) {
this.m_pcEntropyDecoderIf.ParseQtRootCbf(uiAbsPartIdx, &uiQtRootCbf)
}
if uiQtRootCbf == 0 {
pcCU.SetCbfSubParts(0, 0, 0, uiAbsPartIdx, uiDepth)
pcCU.SetTrIdxSubParts(0, uiAbsPartIdx, uiDepth)
return
}
}
this.xDecodeTransform(pcCU, uiLumaOffset, uiChromaOffset, uiAbsPartIdx, uiDepth, uiWidth, uiHeight, 0, bCodeDQP)
}
//private:
func (this *TDecEntropy) xDecodeTransform(pcCU *TLibCommon.TComDataCU, offsetLuma, offsetChroma, uiAbsPartIdx, uiDepth, width, height, uiTrIdx uint, bCodeDQP *bool) {
var uiSubdiv uint
uiLog2TrafoSize := uint(TLibCommon.G_aucConvertToBit[pcCU.GetSlice().GetSPS().GetMaxCUWidth()]) + 2 - uiDepth
if uiTrIdx == 0 {
this.m_bakAbsPartIdxCU = uiAbsPartIdx
}
if uiLog2TrafoSize == 2 {
partNum := pcCU.GetPic().GetNumPartInCU() >> ((uiDepth - 1) << 1)
if (uiAbsPartIdx % partNum) == 0 {
this.m_uiBakAbsPartIdx = uiAbsPartIdx
this.m_uiBakChromaOffset = offsetChroma
}
}
if pcCU.GetPredictionMode1(uiAbsPartIdx) == TLibCommon.MODE_INTRA && pcCU.GetPartitionSize1(uiAbsPartIdx) == TLibCommon.SIZE_NxN && uiDepth == uint(pcCU.GetDepth1(uiAbsPartIdx)) {
uiSubdiv = 1
} else if (pcCU.GetSlice().GetSPS().GetQuadtreeTUMaxDepthInter() == 1) && (pcCU.GetPredictionMode1(uiAbsPartIdx) == TLibCommon.MODE_INTER) && (pcCU.GetPartitionSize1(uiAbsPartIdx) != TLibCommon.SIZE_2Nx2N) && (uiDepth == uint(pcCU.GetDepth1(uiAbsPartIdx))) {
uiSubdiv = uint(TLibCommon.B2U(uiLog2TrafoSize > pcCU.GetQuadtreeTULog2MinSizeInCU(uiAbsPartIdx)))
} else if uiLog2TrafoSize > pcCU.GetSlice().GetSPS().GetQuadtreeTULog2MaxSize() {
uiSubdiv = 1
} else if uiLog2TrafoSize == pcCU.GetSlice().GetSPS().GetQuadtreeTULog2MinSize() {
uiSubdiv = 0
} else if uiLog2TrafoSize == pcCU.GetQuadtreeTULog2MinSizeInCU(uiAbsPartIdx) {
uiSubdiv = 0
} else {
//assert( uiLog2TrafoSize > pcCU.GetQuadtreeTULog2MinSizeInCU(uiAbsPartIdx) );
this.m_pcEntropyDecoderIf.ParseTransformSubdivFlag(&uiSubdiv, 5-uiLog2TrafoSize)
}
uiTrDepth := uiDepth - uint(pcCU.GetDepth1(uiAbsPartIdx))
{
bFirstCbfOfCU := uiTrDepth == 0
if bFirstCbfOfCU {
pcCU.SetCbfSubParts4(0, TLibCommon.TEXT_CHROMA_U, uiAbsPartIdx, uiDepth)
pcCU.SetCbfSubParts4(0, TLibCommon.TEXT_CHROMA_V, uiAbsPartIdx, uiDepth)
}
if bFirstCbfOfCU || uiLog2TrafoSize > 2 {
if bFirstCbfOfCU || pcCU.GetCbf3(uiAbsPartIdx, TLibCommon.TEXT_CHROMA_U, uiTrDepth-1) != 0 {
this.m_pcEntropyDecoderIf.ParseQtCbf(pcCU, uiAbsPartIdx, TLibCommon.TEXT_CHROMA_U, uiTrDepth, uiDepth)
}
if bFirstCbfOfCU || pcCU.GetCbf3(uiAbsPartIdx, TLibCommon.TEXT_CHROMA_V, uiTrDepth-1) != 0 {
this.m_pcEntropyDecoderIf.ParseQtCbf(pcCU, uiAbsPartIdx, TLibCommon.TEXT_CHROMA_V, uiTrDepth, uiDepth)
}
} else {
pcCU.SetCbfSubParts4(byte(pcCU.GetCbf3(uiAbsPartIdx, TLibCommon.TEXT_CHROMA_U, uiTrDepth-1)<<uiTrDepth), TLibCommon.TEXT_CHROMA_U, uiAbsPartIdx, uiDepth)
pcCU.SetCbfSubParts4(byte(pcCU.GetCbf3(uiAbsPartIdx, TLibCommon.TEXT_CHROMA_V, uiTrDepth-1)<<uiTrDepth), TLibCommon.TEXT_CHROMA_V, uiAbsPartIdx, uiDepth)
}
}
if uiSubdiv != 0 {
var size uint
width >>= 1
height >>= 1
size = width * height
uiTrIdx++
uiDepth++
uiQPartNum := pcCU.GetPic().GetNumPartInCU() >> (uiDepth << 1)
uiStartAbsPartIdx := uiAbsPartIdx
uiYCbf := uint(0)
uiUCbf := uint(0)
uiVCbf := uint(0)
for i := uint(0); i < 4; i++ {
this.xDecodeTransform(pcCU, offsetLuma, offsetChroma, uiAbsPartIdx, uiDepth, width, height, uiTrIdx, bCodeDQP)
uiYCbf |= uint(pcCU.GetCbf3(uiAbsPartIdx, TLibCommon.TEXT_LUMA, uiTrDepth+1))
uiUCbf |= uint(pcCU.GetCbf3(uiAbsPartIdx, TLibCommon.TEXT_CHROMA_U, uiTrDepth+1))
uiVCbf |= uint(pcCU.GetCbf3(uiAbsPartIdx, TLibCommon.TEXT_CHROMA_V, uiTrDepth+1))
uiAbsPartIdx += uiQPartNum
offsetLuma += size
offsetChroma += (size >> 2)
}
for ui := uint(0); ui < 4*uiQPartNum; ui++ {
pcCU.GetCbf1(TLibCommon.TEXT_LUMA)[uiStartAbsPartIdx+ui] |= byte(uiYCbf << uiTrDepth)
pcCU.GetCbf1(TLibCommon.TEXT_CHROMA_U)[uiStartAbsPartIdx+ui] |= byte(uiUCbf << uiTrDepth)
pcCU.GetCbf1(TLibCommon.TEXT_CHROMA_V)[uiStartAbsPartIdx+ui] |= byte(uiVCbf << uiTrDepth)
}
} else {
//assert( uiDepth >= pcCU.GetDepth( uiAbsPartIdx ) );
pcCU.SetTrIdxSubParts(uiTrDepth, uiAbsPartIdx, uiDepth)
{
//DTRACE_CABAC_VL( TLibCommon.G_nSymbolCounter++ );
/*this.m_pcEntropyDecoderIf.DTRACE_CABAC_T("\tTrIdx: abspart=")
this.m_pcEntropyDecoderIf.DTRACE_CABAC_V(uiAbsPartIdx)
this.m_pcEntropyDecoderIf.DTRACE_CABAC_T("\tdepth=")
this.m_pcEntropyDecoderIf.DTRACE_CABAC_V(uiDepth)
this.m_pcEntropyDecoderIf.DTRACE_CABAC_T("\ttrdepth=")
this.m_pcEntropyDecoderIf.DTRACE_CABAC_V(uiTrDepth)
this.m_pcEntropyDecoderIf.DTRACE_CABAC_T("\n")*/
}
pcCU.SetCbfSubParts4(0, TLibCommon.TEXT_LUMA, uiAbsPartIdx, uiDepth)
if pcCU.GetPredictionMode1(uiAbsPartIdx) != TLibCommon.MODE_INTRA && uiDepth == uint(pcCU.GetDepth1(uiAbsPartIdx)) && pcCU.GetCbf3(uiAbsPartIdx, TLibCommon.TEXT_CHROMA_U, 0) == 0 && pcCU.GetCbf3(uiAbsPartIdx, TLibCommon.TEXT_CHROMA_V, 0) == 0 {
pcCU.SetCbfSubParts4(1<<uiTrDepth, TLibCommon.TEXT_LUMA, uiAbsPartIdx, uiDepth)
} else {
this.m_pcEntropyDecoderIf.ParseQtCbf(pcCU, uiAbsPartIdx, TLibCommon.TEXT_LUMA, uiTrDepth, uiDepth)
}
// transforthis.m_unit begin
cbfY := pcCU.GetCbf3(uiAbsPartIdx, TLibCommon.TEXT_LUMA, uiTrIdx)
cbfU := pcCU.GetCbf3(uiAbsPartIdx, TLibCommon.TEXT_CHROMA_U, uiTrIdx)
cbfV := pcCU.GetCbf3(uiAbsPartIdx, TLibCommon.TEXT_CHROMA_V, uiTrIdx)
if uiLog2TrafoSize == 2 {
partNum := pcCU.GetPic().GetNumPartInCU() >> ((uiDepth - 1) << 1)
if (uiAbsPartIdx % partNum) == (partNum - 1) {
cbfU = pcCU.GetCbf3(this.m_uiBakAbsPartIdx, TLibCommon.TEXT_CHROMA_U, uiTrIdx)
cbfV = pcCU.GetCbf3(this.m_uiBakAbsPartIdx, TLibCommon.TEXT_CHROMA_V, uiTrIdx)
}
}
if cbfY != 0 || cbfU != 0 || cbfV != 0 {
// dQP: only for LCU
if pcCU.GetSlice().GetPPS().GetUseDQP() {
if *bCodeDQP {
this.DecodeQP(pcCU, this.m_bakAbsPartIdxCU)
*bCodeDQP = false
}
}
}
if cbfY != 0 {
trWidth := width
trHeight := height
this.m_pcEntropyDecoderIf.ParseCoeffNxN(pcCU, pcCU.GetCoeffY()[offsetLuma:], uiAbsPartIdx, trWidth, trHeight, uiDepth, TLibCommon.TEXT_LUMA)
}
if uiLog2TrafoSize > 2 {
trWidth := width >> 1
trHeight := height >> 1
if cbfU != 0 {
this.m_pcEntropyDecoderIf.ParseCoeffNxN(pcCU, pcCU.GetCoeffCb()[offsetChroma:], uiAbsPartIdx, trWidth, trHeight, uiDepth, TLibCommon.TEXT_CHROMA_U)
}
if cbfV != 0 {
this.m_pcEntropyDecoderIf.ParseCoeffNxN(pcCU, pcCU.GetCoeffCr()[offsetChroma:], uiAbsPartIdx, trWidth, trHeight, uiDepth, TLibCommon.TEXT_CHROMA_V)
}
} else {
partNum := pcCU.GetPic().GetNumPartInCU() >> ((uiDepth - 1) << 1)
if (uiAbsPartIdx % partNum) == (partNum - 1) {
trWidth := width
trHeight := height
if cbfU != 0 {
this.m_pcEntropyDecoderIf.ParseCoeffNxN(pcCU, pcCU.GetCoeffCb()[this.m_uiBakChromaOffset:], this.m_uiBakAbsPartIdx, trWidth, trHeight, uiDepth, TLibCommon.TEXT_CHROMA_U)
}
if cbfV != 0 {
this.m_pcEntropyDecoderIf.ParseCoeffNxN(pcCU, pcCU.GetCoeffCr()[this.m_uiBakChromaOffset:], this.m_uiBakAbsPartIdx, trWidth, trHeight, uiDepth, TLibCommon.TEXT_CHROMA_V)
}
}
}
// transform_unit end
}
}