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/****************************************************************************
* *
* PrimeSense Sensor 5.x Alpha *
* Copyright (C) 2011 PrimeSense Ltd. *
* *
* This file is part of PrimeSense Sensor. *
* *
* PrimeSense Sensor is free software: you can redistribute it and/or modify*
* it under the terms of the GNU Lesser General Public License as published *
* by the Free Software Foundation, either version 3 of the License, or *
* (at your option) any later version. *
* *
* PrimeSense Sensor is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU Lesser General Public License for more details. *
* *
* You should have received a copy of the GNU Lesser General Public License *
* along with PrimeSense Sensor. If not, see <http://www.gnu.org/licenses/>.*
* *
****************************************************************************/
//---------------------------------------------------------------------------
// Includes
//---------------------------------------------------------------------------
#include "XnUncompressedYUVtoRGBImageProcessor.h"
#include "YUV.h"
#include <XnProfiling.h>
//---------------------------------------------------------------------------
// Code
//---------------------------------------------------------------------------
XnUncompressedYUVtoRGBImageProcessor::XnUncompressedYUVtoRGBImageProcessor(XnSensorImageStream* pStream, XnSensorStreamHelper* pHelper) :
XnImageProcessor(pStream, pHelper)
{
}
XnUncompressedYUVtoRGBImageProcessor::~XnUncompressedYUVtoRGBImageProcessor()
{
}
XnStatus XnUncompressedYUVtoRGBImageProcessor::Init()
{
XnStatus nRetVal = XN_STATUS_OK;
nRetVal = XnImageProcessor::Init();
XN_IS_STATUS_OK(nRetVal);
XN_VALIDATE_BUFFER_ALLOCATE(m_ContinuousBuffer, XN_YUV_TO_RGB_INPUT_ELEMENT_SIZE)
return (XN_STATUS_OK);
}
void XnUncompressedYUVtoRGBImageProcessor::ProcessFramePacketChunk(const XnSensorProtocolResponseHeader* /*pHeader*/, const XnUChar* pData, XnUInt32 /*nDataOffset*/, XnUInt32 nDataSize)
{
XN_PROFILING_START_SECTION("XnUncompressedYUVtoRGBImageProcessor::ProcessFramePacketChunk")
XnBuffer* pWriteBuffer = GetWriteBuffer();
if (m_ContinuousBuffer.GetSize() != 0)
{
// fill in to a whole element
XnUInt32 nReadBytes = XN_MIN(nDataSize, XN_YUV_TO_RGB_INPUT_ELEMENT_SIZE - m_ContinuousBuffer.GetSize());
m_ContinuousBuffer.UnsafeWrite(pData, nReadBytes);
pData += nReadBytes;
nDataSize -= nReadBytes;
if (m_ContinuousBuffer.GetSize() == XN_YUV_TO_RGB_INPUT_ELEMENT_SIZE)
{
if (CheckWriteBufferForOverflow(XN_YUV_TO_RGB_OUTPUT_ELEMENT_SIZE))
{
// process it
XnUInt32 nActualRead = 0;
XnUInt32 nOutputSize = pWriteBuffer->GetFreeSpaceInBuffer();
YUV422ToRGB888(m_ContinuousBuffer.GetData(), pWriteBuffer->GetUnsafeWritePointer(), XN_YUV_TO_RGB_INPUT_ELEMENT_SIZE, &nActualRead, &nOutputSize);
pWriteBuffer->UnsafeUpdateSize(XN_YUV_TO_RGB_OUTPUT_ELEMENT_SIZE);
}
m_ContinuousBuffer.Reset();
}
}
if (CheckWriteBufferForOverflow(nDataSize / XN_YUV_TO_RGB_INPUT_ELEMENT_SIZE * XN_YUV_TO_RGB_OUTPUT_ELEMENT_SIZE))
{
XnUInt32 nActualRead = 0;
XnUInt32 nOutputSize = pWriteBuffer->GetFreeSpaceInBuffer();
YUV422ToRGB888(pData, pWriteBuffer->GetUnsafeWritePointer(), nDataSize, &nActualRead, &nOutputSize);
pWriteBuffer->UnsafeUpdateSize(nOutputSize);
pData += nActualRead;
nDataSize -= nActualRead;
// if we have any bytes left, store them for next packet.
if (nDataSize > 0)
{
// no need to check for overflow. there can not be a case in which more than XN_INPUT_ELEMENT_SIZE
// are left.
m_ContinuousBuffer.UnsafeWrite(pData, nDataSize);
}
}
XN_PROFILING_END_SECTION
}
void XnUncompressedYUVtoRGBImageProcessor::OnStartOfFrame(const XnSensorProtocolResponseHeader* pHeader)
{
XnImageProcessor::OnStartOfFrame(pHeader);
m_ContinuousBuffer.Reset();
}
void XnUncompressedYUVtoRGBImageProcessor::OnEndOfFrame(const XnSensorProtocolResponseHeader* pHeader)
{
XnImageProcessor::OnEndOfFrame(pHeader);
m_ContinuousBuffer.Reset();
}
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