XnStatus GeneralPropRecord::Decode()
{
XnStatus nRetVal = XN_STATUS_OK;
nRetVal = StartRead();
XN_IS_STATUS_OK(nRetVal);
nRetVal = ReadString(m_strPropName);
XN_IS_STATUS_OK(nRetVal);
nRetVal = Read(&m_nPropDataSize, sizeof(m_nPropDataSize));
XN_IS_STATUS_OK(nRetVal);
//The property data is not copied but just pointed to
XnUInt8* pData = const_cast<XnUInt8*>(GetReadPos());
#if (XN_PLATFORM == XN_PLATFORM_LINUX_ARM || XN_PLATFORM == XN_PLATFORM_ARC || XN_PLATFORM == XN_PLATFORM_ANDROID_ARM)
// under ARM we have some alignment issues. Move this buffer so it will be aligned.
XnUInt32 nAlignFix = XN_DEFAULT_MEM_ALIGN - ((XnUInt32)pData % XN_DEFAULT_MEM_ALIGN);
if (nAlignFix != 0)
{
xnOSMemMove(pData + nAlignFix, pData, m_nPropDataSize);
pData += nAlignFix;
}
#endif
m_pPropData = pData;
XN_IS_STATUS_OK(nRetVal);
return XN_STATUS_OK;
}
XnStatus Link24zYuv422Parser::ParsePacketImpl(XnLinkFragmentation fragmentation, const XnUInt8* pSrc, const XnUInt8* pSrcEnd, XnUInt8*& pDst, const XnUInt8* pDstEnd)
{
XnStatus nRetVal = XN_STATUS_OK;
if ((fragmentation | XN_LINK_FRAG_BEGIN) != 0)
{
m_dataFromPrevPacketBytes = 0;
m_tempYuvImageBytes = 0;
}
const XnUInt8* pInput = pSrc;
XnSizeT inputSize = pSrcEnd - pSrc;
// if there's data left from previous packet, append new data to it
if (m_dataFromPrevPacketBytes > 0)
{
if (m_dataFromPrevPacketBytes + inputSize > m_expectedFrameSize)
{
XN_ASSERT(FALSE);
m_dataFromPrevPacketBytes = 0;
return XN_STATUS_OUTPUT_BUFFER_OVERFLOW;
}
xnOSMemCopy(m_dataFromPrevPacket, pSrc, inputSize);
pInput = m_dataFromPrevPacket;
inputSize = m_dataFromPrevPacketBytes + inputSize;
}
XnUInt8* pOutput = pDst;
XnSizeT outputSize = pDstEnd - pDst;
if (m_transformToRGB)
{
pOutput = m_tempYuvImage + m_tempYuvImageBytes;
outputSize = m_rgbFrameSize - m_tempYuvImageBytes;
}
XnSizeT actualRead;
nRetVal = Uncompress24z(pInput, inputSize, pOutput, &outputSize, m_lineWidthBytes, &actualRead, (fragmentation | XN_LINK_FRAG_END) == XN_LINK_FRAG_END);
XN_IS_STATUS_OK(nRetVal);
pDst += outputSize;
// if we have bytes left, keep them for next packet
if (actualRead < inputSize)
{
m_dataFromPrevPacketBytes = inputSize - actualRead;
xnOSMemMove(m_dataFromPrevPacket, pInput + actualRead, m_dataFromPrevPacketBytes);
}
if ((fragmentation | XN_LINK_FRAG_END) != 0)
{
outputSize = pDstEnd - pDst;
LinkYuvToRgb::Yuv422ToRgb888(m_tempYuvImage, m_tempYuvImageBytes, pDst, outputSize);
pDst += outputSize;
}
return (XN_STATUS_OK);
}
