CHARLS_IMEXPORT JLS_ERROR JpegLsEncode(void* pdataCompressed, size_t cbyteBuffer, size_t* pcbyteWritten, const void* pdataUncompressed, size_t cbyteUncompressed, const JlsParamaters* pparams)
{
JlsParamaters info = *pparams;
if(info.bytesperline == 0)
{
info.bytesperline = info.width * ((info.bitspersample + 7)/8);
if (info.ilv != ILV_NONE)
{
info.bytesperline *= info.components;
}
}
JLS_ERROR parameterError = CheckInput(pdataCompressed, cbyteBuffer, pdataUncompressed, cbyteUncompressed, &info);
if (parameterError != OK)
return parameterError;
if (pcbyteWritten == NULL)
return InvalidJlsParameters;
Size size = Size(info.width, info.height);
LONG cbit = info.bitspersample;
JLSOutputStream stream;
stream.Init(size, info.bitspersample, info.components);
if (info.colorTransform != 0)
{
stream.AddColorTransform(info.colorTransform);
}
if (info.ilv == ILV_NONE)
{
LONG cbyteComp = size.cx*size.cy*((cbit +7)/8);
for (LONG icomp = 0; icomp < info.components; ++icomp)
{
const BYTE* pbyteComp = static_cast<const BYTE*>(pdataUncompressed) + icomp*cbyteComp;
stream.AddScan(pbyteComp, &info);
}
}
else
{
stream.AddScan(pdataUncompressed, &info);
}
stream.Write((BYTE*)pdataCompressed, cbyteBuffer);
*pcbyteWritten = stream.GetBytesWritten();
return OK;
}
CHARLS_IMEXPORT(JLS_ERROR) JpegLsEncode(void* compressedData, size_t compressedLength, size_t* pcbyteWritten, const void* uncompressedData, size_t uncompressedLength, struct JlsParameters* pparams)
{
JlsParameters info = *pparams;
if(info.bytesperline == 0)
{
info.bytesperline = info.width * ((info.bitspersample + 7)/8);
if (info.ilv != ILV_NONE)
{
info.bytesperline *= info.components;
}
}
JLS_ERROR parameterError = CheckInput(compressedData, compressedLength, uncompressedData, uncompressedLength, &info);
if (parameterError != OK)
return parameterError;
if (pcbyteWritten == NULL)
return InvalidJlsParameters;
Size size = Size(info.width, info.height);
JLSOutputStream stream;
stream.Init(size, info.bitspersample, info.components);
if (info.colorTransform != 0)
{
stream.AddColorTransform(info.colorTransform);
}
if (info.ilv == ILV_NONE)
{
LONG cbyteComp = size.cx*size.cy*((info.bitspersample +7)/8);
for (LONG component = 0; component < info.components; ++component)
{
const BYTE* compareData = static_cast<const BYTE*>(uncompressedData) + component*cbyteComp;
stream.AddScan(compareData, &info);
}
}
else
{
stream.AddScan(uncompressedData, &info);
}
stream.Write((BYTE*)compressedData, compressedLength);
*pcbyteWritten = stream.GetBytesWritten();
return OK;
}