static Status parseAPP14(DataReader *pReader, JPEGAPP14Header *pHeader)
{
BitstreamReader bs;
Ipp8u iMarker[5];
size_t iSize = 5;
pReader->Get16uSwap(&pHeader->iLength);
pReader->CacheData(&iMarker[0], iSize);
if(iMarker[0] == 'a' && iMarker[1] == 'd' && iMarker[2] == 'o' && iMarker[3] == 'b' && iMarker[4] == 'e')
{
pReader->MovePosition(5);
bs.Init(pReader);
pHeader->bAdobeDetected = true;
pHeader->iAdobeVersion = bs.GetBits(16);
pHeader->iAdobeFlags0 = bs.GetBits(16);
pHeader->iAdobeFlags1 = bs.GetBits(16);
pHeader->iAdobeTransform = bs.GetBits(8);
bs.AlignReader();
}
return UMC_OK;
}
static Status parseAPP0(DataReader *pReader, JPEGAPP0Header *pHeader)
{
BitstreamReader bs;
Ipp8u iMarker[5];
size_t iSize = 5;
pReader->Get16uSwap(&pHeader->iLength);
pReader->CacheData(&iMarker[0], iSize);
if(iMarker[0] == 'J' && iMarker[1] == 'F' && iMarker[2] == 'I' && iMarker[3] == 'F' && iMarker[4] == 0)
{
pReader->MovePosition(5);
bs.Init(pReader);
pHeader->bJfifDetected = true;
pHeader->iJfifVerMajor = bs.GetBits(8);
pHeader->iJfifVerMinor = bs.GetBits(8);
pHeader->iJfifUnits = bs.GetBits(8);
pHeader->iJfifXDensity = bs.GetBits(16);
pHeader->iJfifYDensity = bs.GetBits(16);
pHeader->iJfifThumbWidth = bs.GetBits(8);
pHeader->iJfifThumbHeight = bs.GetBits(8);
bs.AlignReader();
}
pReader->CacheData(&iMarker[0], iSize);
if(iMarker[0] == 'J' && iMarker[1] == 'F' && iMarker[2] == 'X' && iMarker[3] == 'X' && iMarker[4] == 0)
{
pReader->MovePosition(5);
bs.Init(pReader);
pHeader->bJfxxDetected = true;
pHeader->iJfxxThumbnailsType = bs.GetBits(8);
bs.AlignReader();
}
pReader->CacheData(&iMarker[0], iSize);
if(iMarker[0] == 'A' && iMarker[1] == 'V' && iMarker[2] == 'I' && iMarker[3] == '1')
{
pReader->MovePosition(4);
bs.Init(pReader);
pHeader->bAvi1Detected = true;
pHeader->iAvi1Polarity = bs.GetBits(8);
pHeader->iAvi1Reserved = bs.GetBits(8);
pHeader->iAvi1FiledSize1 = bs.GetBits(32);
pHeader->iAvi1FiledSize2 = bs.GetBits(32);
bs.AlignReader();
}
return UMC_OK;
}
Status Mpeg2FrameConstructor::ParsePictureHeader(Ipp8u *buf, Ipp32s iLen, Mpeg2TrackInfo *pInfo) {
BitstreamReader bs;
bs.SkipBits(32 + 4 + 4 + 4 + 4 + 4 + 2);
bs.SkipBits(1 + 1 + 1 + 1 + 1 + 1 + 1);
bs.SkipBits(5);
bs.SkipBits(3);
Ipp8u source_format;
bs.SkipBits(22);
bs.SkipBits(8);
if (7 == source_format) {
Ipp8u ufep = (Ipp8u)bs.GetBits(3);
if (0x01 == ufep) {
bs.SkipBits(10);
}
}
return Status();
}
static Status parseSOF(DataReader *pReader, JPEGSOFHeader *pHeader)
{
BitstreamReader bs;
bs.Init(pReader);
pHeader->iLength = bs.GetBits(16);
pHeader->iPrecision = bs.GetBits(8);
pHeader->iHeight = bs.GetBits(16);
pHeader->iWidth = bs.GetBits(16);
pHeader->iComonents = bs.GetBits(8);
for(Ipp32u i = 0; i < pHeader->iComonents; i++)
{
pHeader->comonent[i].iID = bs.GetBits(8);
pHeader->comonent[i].iHSampling = bs.GetBits(4);
pHeader->comonent[i].iVSampling = bs.GetBits(4);
pHeader->comonent[i].iQSelector = bs.GetBits(8);
}
bs.AlignReader();
return UMC_OK;
}
