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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 <XnPlatform.h>
#include <XnCore.h>
#include "XnFormats.h"
#include <XnOS.h>
#include <XnLog.h>
//---------------------------------------------------------------------------
// Defines
//---------------------------------------------------------------------------
#define XN_MIRROR_MAX_LINE_SIZE 1920*3
//---------------------------------------------------------------------------
// Code
//---------------------------------------------------------------------------
XnStatus XnMirrorOneBytePixels(XnUChar* pBuffer, XnUInt32 nBufferSize, XnUInt32 nLineSize)
{
// Local function variables
XnUInt8* pSrc = pBuffer;
XnUInt8 pLineBuffer[XN_MIRROR_MAX_LINE_SIZE];
XnUInt8* pSrcEnd = pSrc + nBufferSize;
XnUInt8* pDest = NULL;
XnUInt8* pDestVal = &pLineBuffer[0] + nLineSize - 1;
XnUInt8* pDestEnd = &pLineBuffer[0] - 1;
if (nLineSize > XN_MIRROR_MAX_LINE_SIZE)
{
return (XN_STATUS_INTERNAL_BUFFER_TOO_SMALL);
}
while (pSrc < pSrcEnd)
{
xnOSMemCopy(pLineBuffer, pSrc, nLineSize);
pDest = pDestVal;
while (pDest != pDestEnd)
{
*pSrc = *pDest;
pSrc++;
pDest--;
}
}
// All is good...
return (XN_STATUS_OK);
}
XnStatus XnMirrorTwoBytePixels(XnUChar* pBuffer, XnUInt32 nBufferSize, XnUInt32 nLineSize)
{
// Local function variables
XnUInt16* pSrc = (XnUInt16*)pBuffer;
XnUInt16 pLineBuffer[XN_MIRROR_MAX_LINE_SIZE];
XnUInt16* pSrcEnd = pSrc + nBufferSize / sizeof(XnUInt16);
XnUInt16* pDest = NULL;
XnUInt16* pDestVal = &pLineBuffer[0] + nLineSize - 1;
XnUInt16* pDestEnd = &pLineBuffer[0] - 1;
XnUInt16 nMemCpyLineSize = (XnUInt16)(nLineSize * sizeof(XnUInt16));
XnUInt16 nValue;
if (nLineSize > XN_MIRROR_MAX_LINE_SIZE)
{
return (XN_STATUS_INTERNAL_BUFFER_TOO_SMALL);
}
while (pSrc < pSrcEnd)
{
xnOSMemCopy(pLineBuffer, pSrc, nMemCpyLineSize);
pDest = pDestVal;
while (pDest != pDestEnd)
{
nValue = pDest[0];
pSrc[0] = nValue;
pDest--;
pSrc++;
}
}
// All is good...
return (XN_STATUS_OK);
}
XnStatus XnMirrorThreeBytePixels(XnUChar* pBuffer, XnUInt32 nBufferSize, XnUInt32 nLineSize)
{
// Local function variables
XnUInt8* pSrc = pBuffer;
XnUInt8 pLineBuffer[XN_MIRROR_MAX_LINE_SIZE];
XnUInt8* pSrcEnd = pSrc + nBufferSize;
XnUInt8* pDest = NULL;
XnUInt8* pDestVal = &pLineBuffer[0] + nLineSize * 3 - 1;
XnUInt8* pDestEnd = &pLineBuffer[0] - 1;
XnUInt16 nMemCpyLineSize = (XnUInt16)(nLineSize * 3);
if (nMemCpyLineSize > XN_MIRROR_MAX_LINE_SIZE)
{
return (XN_STATUS_INTERNAL_BUFFER_TOO_SMALL);
}
while (pSrc < pSrcEnd)
{
xnOSMemCopy(pLineBuffer, pSrc, nMemCpyLineSize);
pDest = pDestVal;
while (pDest != pDestEnd)
{
*pSrc = *(pDest-2);
*(pSrc+1) = *(pDest-1);
*(pSrc+2) = *pDest;
pSrc+=3;
pDest-=3;
}
}
// All is good...
return (XN_STATUS_OK);
}
XnStatus XnMirrorYUV422Pixels(XnUChar* pBuffer, XnUInt32 nBufferSize, XnUInt32 nLineSize)
{
// Local function variables
XnUInt8* pSrc = pBuffer;
XnUInt8 pLineBuffer[XN_MIRROR_MAX_LINE_SIZE];
XnUInt8* pSrcEnd = (XnUInt8*)pSrc + nBufferSize;
XnUInt8* pDest = NULL;
XnUInt8* pDestVal = &pLineBuffer[(nLineSize/2-1)*sizeof(XnUInt32)]; // last element
XnUInt8* pDestEnd = &pLineBuffer[0]; // first element
XnUInt32 nMemCpyLineSize = nLineSize/2*sizeof(XnUInt32);
if (nMemCpyLineSize > XN_MIRROR_MAX_LINE_SIZE)
{
return (XN_STATUS_INTERNAL_BUFFER_TOO_SMALL);
}
while (pSrc < pSrcEnd)
{
xnOSMemCopy(pLineBuffer, pSrc, nMemCpyLineSize);
pDest = pDestVal;
while (pDest >= pDestEnd)
{
pSrc[0] = pDest[0]; // u
pSrc[1] = pDest[3]; // y1 <-> y2
pSrc[2] = pDest[2]; // v
pSrc[3] = pDest[1]; // y2 <-> y1
pSrc += 4;
pDest -= 4;
}
}
// All is good...
return (XN_STATUS_OK);
}
typedef XnStatus (*XnMirrorFunc)(XnUChar* pBuffer, XnUInt32 nBufferSize, XnUInt32 nXRes);
typedef struct
{
XnMirrorFunc MirrorFunctions[XN_OUTPUT_FORMATS_COUNT];
} XnMirrorFunctions;
XnMirrorFunctions XnMirrorGetFunctionsMap()
{
XnMirrorFunctions result;
xnOSMemSet(&result, 0, sizeof(XnMirrorFunctions));
result.MirrorFunctions[XN_OUTPUT_FORMAT_SHIFT_VALUES] = XnMirrorTwoBytePixels;
result.MirrorFunctions[XN_OUTPUT_FORMAT_DEPTH_VALUES] = XnMirrorTwoBytePixels;
result.MirrorFunctions[XN_OUTPUT_FORMAT_GRAYSCALE8] = XnMirrorOneBytePixels;
result.MirrorFunctions[XN_OUTPUT_FORMAT_GRAYSCALE16] = XnMirrorTwoBytePixels;
result.MirrorFunctions[XN_OUTPUT_FORMAT_YUV422] = XnMirrorYUV422Pixels;
result.MirrorFunctions[XN_OUTPUT_FORMAT_RGB24] = XnMirrorThreeBytePixels;
return result;
}
XN_FORMATS_API XnStatus XnFormatsMirrorPixelData(XnOutputFormats nOutputFormat, XnUChar* pBuffer, XnUInt32 nBufferSize, XnUInt32 nXRes)
{
static XnMirrorFunctions FunctionsMap = XnMirrorGetFunctionsMap();
XnStatus nRetVal = XN_STATUS_OK;
// Validate the input/output pointers (to make sure none of them is NULL)
XN_VALIDATE_INPUT_PTR(pBuffer);
XnMirrorFunc pFunc = FunctionsMap.MirrorFunctions[nOutputFormat];
if (pFunc == NULL)
{
xnLogError(XN_MASK_FORMATS, "Mirror was not implemented for output format %d", nOutputFormat);
return XN_STATUS_ERROR;
}
// perform mirror
nRetVal = pFunc(pBuffer, nBufferSize, nXRes);
XN_IS_STATUS_OK(nRetVal);
return (XN_STATUS_OK);
}
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