void CDXVADecoderMpeg2::UpdatePictureParams(int nSurfaceIndex)
{
DXVA2_ConfigPictureDecode* cpd = GetDXVA2Config(); // Ok for DXVA1 too (parameters have been copied)
m_PictureParams.wDecodedPictureIndex = nSurfaceIndex;
// Manage reference picture list
if (!m_PictureParams.bPicBackwardPrediction) {
if (m_wRefPictureIndex[0] != NO_REF_FRAME) {
RemoveRefFrame(m_wRefPictureIndex[0]);
}
m_wRefPictureIndex[0] = m_wRefPictureIndex[1];
m_wRefPictureIndex[1] = nSurfaceIndex;
}
m_PictureParams.wForwardRefPictureIndex = (m_PictureParams.bPicIntra == 0) ? m_wRefPictureIndex[0] : NO_REF_FRAME;
m_PictureParams.wBackwardRefPictureIndex = (m_PictureParams.bPicBackwardPrediction == 1) ? m_wRefPictureIndex[1] : NO_REF_FRAME;
// Shall be 0 if bConfigResidDiffHost is 0 or if BPP > 8
if (cpd->ConfigResidDiffHost == 0 || m_PictureParams.bBPPminus1 > 7) {
m_PictureParams.bPicSpatialResid8 = 0;
} else {
if (m_PictureParams.bBPPminus1 == 7 && m_PictureParams.bPicIntra && cpd->ConfigResidDiffHost)
// Shall be 1 if BPP is 8 and bPicIntra is 1 and bConfigResidDiffHost is 1
{
m_PictureParams.bPicSpatialResid8 = 1;
} else
// Shall be 1 if bConfigSpatialResid8 is 1
{
m_PictureParams.bPicSpatialResid8 = cpd->ConfigSpatialResid8;
}
}
// Shall be 0 if bConfigResidDiffHost is 0 or if bConfigSpatialResid8 is 0 or if BPP > 8
if (cpd->ConfigResidDiffHost == 0 || cpd->ConfigSpatialResid8 == 0 || m_PictureParams.bBPPminus1 > 7) {
m_PictureParams.bPicOverflowBlocks = 0;
}
// Shall be 1 if bConfigHostInverseScan is 1 or if bConfigResidDiffAccelerator is 0.
if (cpd->ConfigHostInverseScan == 1 || cpd->ConfigResidDiffAccelerator == 0) {
m_PictureParams.bPicScanFixed = 1;
if (cpd->ConfigHostInverseScan != 0) {
m_PictureParams.bPicScanMethod = 3; // 11 = Arbitrary scan with absolute coefficient address.
} else if (FFGetAlternateScan(m_pFilter->GetAVCtx())) {
m_PictureParams.bPicScanMethod = 1; // 00 = Zig-zag scan (MPEG-2 Figure 7-2)
} else {
m_PictureParams.bPicScanMethod = 0; // 01 = Alternate-vertical (MPEG-2 Figure 7-3),
}
}
}
void CDXVADecoderMpeg2::UpdatePictureParams()
{
DXVA2_ConfigPictureDecode* cpd = GetDXVA2Config(); // Ok for DXVA1 too (parameters have been copied)
DXVA_PictureParameters* DXVAPicParams = &m_DXVA_Context.DXVA_MPEG2Context[m_nFieldNum].DXVAPicParams;
// Shall be 0 if bConfigResidDiffHost is 0 or if BPP > 8
if (cpd->ConfigResidDiffHost == 0 || DXVAPicParams->bBPPminus1 > 7) {
DXVAPicParams->bPicSpatialResid8 = 0;
} else {
if (DXVAPicParams->bBPPminus1 == 7 && DXVAPicParams->bPicIntra && cpd->ConfigResidDiffHost) {
// Shall be 1 if BPP is 8 and bPicIntra is 1 and bConfigResidDiffHost is 1
DXVAPicParams->bPicSpatialResid8 = 1;
} else {
// Shall be 1 if bConfigSpatialResid8 is 1
DXVAPicParams->bPicSpatialResid8 = cpd->ConfigSpatialResid8;
}
}
// Shall be 0 if bConfigResidDiffHost is 0 or if bConfigSpatialResid8 is 0 or if BPP > 8
if (cpd->ConfigResidDiffHost == 0 || cpd->ConfigSpatialResid8 == 0 || DXVAPicParams->bBPPminus1 > 7) {
DXVAPicParams->bPicOverflowBlocks = 0;
}
// Shall be 1 if bConfigHostInverseScan is 1 or if bConfigResidDiffAccelerator is 0.
if (cpd->ConfigHostInverseScan == 1 || cpd->ConfigResidDiffAccelerator == 0) {
DXVAPicParams->bPicScanFixed = 1;
if (cpd->ConfigHostInverseScan != 0) {
DXVAPicParams->bPicScanMethod = 3; // 11 = Arbitrary scan with absolute coefficient address.
} else if (FFGetAlternateScan(m_pFilter->GetAVCtx())) {
DXVAPicParams->bPicScanMethod = 1; // 00 = Zig-zag scan (MPEG-2 Figure 7-2)
} else {
DXVAPicParams->bPicScanMethod = 0; // 01 = Alternate-vertical (MPEG-2 Figure 7-3),
}
}
}
CDXVADecoderH264::CDXVADecoderH264(CMPCVideoDecFilter* pFilter, IDirectXVideoDecoder* pDirectXVideoDec, const GUID* guidDecoder, DXVAMode nMode, int nPicEntryNumber, DXVA2_ConfigPictureDecode* pDXVA2Config)
: CDXVADecoder(pFilter, pDirectXVideoDec, guidDecoder, nMode, nPicEntryNumber, pDXVA2Config)
{
m_bUseLongSlice = (GetDXVA2Config()->ConfigBitstreamRaw != 2);
Init();
}