Void TDecEntropy::decodeAlfParam(ALFParam* pAlfParam)
{
UInt uiSymbol;
Int iSymbol;
m_pcEntropyDecoderIf->parseAlfFlag(uiSymbol);
pAlfParam->alf_flag = uiSymbol;
if (!pAlfParam->alf_flag)
{
m_pcEntropyDecoderIf->setAlfCtrl(false);
m_pcEntropyDecoderIf->setMaxAlfCtrlDepth(0); //unncessary
return;
}
Int pos;
decodeAux(pAlfParam);
decodeFilt(pAlfParam);
// filter parameters for chroma
m_pcEntropyDecoderIf->parseAlfUvlc(uiSymbol);
pAlfParam->chroma_idc = uiSymbol;
if(pAlfParam->chroma_idc)
{
m_pcEntropyDecoderIf->parseAlfUvlc(uiSymbol);
pAlfParam->tap_chroma = (uiSymbol<<1) + 5;
pAlfParam->num_coeff_chroma = ((pAlfParam->tap_chroma*pAlfParam->tap_chroma+1)>>1) + 1;
// filter coefficients for chroma
for(pos=0; pos<pAlfParam->num_coeff_chroma; pos++)
{
m_pcEntropyDecoderIf->parseAlfSvlc(iSymbol);
pAlfParam->coeff_chroma[pos] = iSymbol;
}
}
Void TDecEntropy::decodeAlfParam(ALFParam* pAlfParam)
{
UInt uiSymbol;
Int iSymbol;
if (!pAlfParam->alf_flag)
{
m_pcEntropyDecoderIf->setAlfCtrl(false);
m_pcEntropyDecoderIf->setMaxAlfCtrlDepth(0); //unncessary
return;
}
Int pos;
decodeAux(pAlfParam);
decodeFilt(pAlfParam);
// filter parameters for chroma
m_pcEntropyDecoderIf->parseAlfUvlc(uiSymbol);
pAlfParam->chroma_idc = uiSymbol;
if(pAlfParam->chroma_idc)
{
m_pcEntropyDecoderIf->parseAlfUvlc(uiSymbol);
Int sqrFiltLengthTab[2] = { 9, 9};
pAlfParam->filter_shape_chroma = uiSymbol;
pAlfParam->num_coeff_chroma = sqrFiltLengthTab[pAlfParam->filter_shape_chroma];
// filter coefficients for chroma
for(pos=0; pos<pAlfParam->num_coeff_chroma; pos++)
{
m_pcEntropyDecoderIf->parseAlfSvlc(iSymbol);
pAlfParam->coeff_chroma[pos] = iSymbol;
}
}
}
