XnStatus XnFileDevice::CreateCodec(xn::ProductionNode& node)
{
XnStatus nRetVal = XN_STATUS_OK;
XnNodeInfo* pNodeInfo = NULL;
if (m_nodeInfoMap.Get(node.GetName(), pNodeInfo) == XN_STATUS_OK)
{
XnUInt64 nValue;
nRetVal = node.GetIntProperty(XN_STREAM_PROPERTY_COMPRESSION, nValue);
XN_IS_STATUS_OK(nRetVal);
// create new one
XnCodecID codecID = XnCodec::GetCodecIDFromCompressionFormat((XnCompressionFormats)nValue);
if (codecID == XN_CODEC_NULL)
{
XN_LOG_WARNING_RETURN(XN_STATUS_CORRUPT_FILE, XN_MASK_FILE, "Invalid compression type: %llu", nValue);
}
if (pNodeInfo->pXnCodec == NULL || pNodeInfo->pXnCodec->GetCompressionFormat() != nValue)
{
// release old codec
XN_DELETE(pNodeInfo->pXnCodec);
if (pNodeInfo->codec.IsValid())
{
xnRemoveNeededNode(GetSelfNodeHandle(), pNodeInfo->codec);
pNodeInfo->codec.Release();
}
// special case: IR recorded with JPEG. This mode is no longer allowed by OpenNI (JPEG
// can now only be used for image). We'll have to handle it ourselves.
if (node.GetInfo().GetDescription().Type == XN_NODE_TYPE_IR &&
codecID == XN_CODEC_JPEG)
{
xn::IRGenerator irGen(node);
XnMapOutputMode outputMode;
nRetVal = irGen.GetMapOutputMode(outputMode);
XN_IS_STATUS_OK(nRetVal);
XN_VALIDATE_NEW_AND_INIT(pNodeInfo->pXnCodec, XnJpegCodec, TRUE, outputMode.nXRes, outputMode.nYRes);
}
else
{
// normal case
nRetVal = m_context.CreateCodec(codecID, node, pNodeInfo->codec);
XN_IS_STATUS_OK(nRetVal);
// we need to make the codec a needed node, so that if xnForceShutdown() is called, we will be
// destroyed *before* it does (as we hold a reference to it).
nRetVal = xnAddNeededNode(GetSelfNodeHandle(), pNodeInfo->codec);
XN_IS_STATUS_OK(nRetVal);
XN_VALIDATE_NEW(pNodeInfo->pXnCodec, XnNiCodec, pNodeInfo->codec);
}
}
}
return (XN_STATUS_OK);
}
XnStatus XnFileDevice::CheckIRCompatibility(xn::ProductionNode& node)
{
XnStatus nRetVal = XN_STATUS_OK;
XnNodeInfo* pNodeInfo = NULL;
if (node.GetInfo().GetDescription().Type == XN_NODE_TYPE_IR &&
m_nodeInfoMap.Get(node.GetName(), pNodeInfo) == XN_STATUS_OK)
{
XnUInt64 nValue;
nRetVal = node.GetIntProperty(XN_STREAM_PROPERTY_OUTPUT_FORMAT, nValue);
XN_IS_STATUS_OK(nRetVal);
pNodeInfo->bIRisRGB = (nValue == XN_OUTPUT_FORMAT_RGB24);
}
return (XN_STATUS_OK);
}