blank image for JPEG XR Encoding

danielwang1971 · ‎12-20-2012

Hello,

II try to use UIC::JpegExEncoder to compress a Mono 640x480 8bit image.Encodiong seems OK no error.

But the result image is blank. Quality is 75. Do you have any idea?

Thanks

The Bmp and wdp file attached(Rename Camera 1-1.wdp.jpg to Camera 1-1.wdp). And followed is my code:

bool EncodeJPEGXRImage(CIppImage& image,BaseStreamOutput& out,CJPEGXRIppImageInitParam* param,int thread)

{

Image imageCn;

Rect refgrid;

Point origin;

RectSize size;

ImageDataPtr dataPtr;

ImageColorSpec colorSpec;

ImageDataOrder dataOrder;

ImageSamplingGeometry geometry;

Ipp32u iChannels;

Ipp32u iPrecision;

Ipp32u iFormat;

Ipp32u iDU;

Ipp32u bAlphaPresent = 0;

Ipp16u iTilesUniform[4] = {0};

Ipp32u iWidth = image.Width();

Ipp32u iHeight = image.Height();

InputParams inParams;

Ipp32u i;

intalpha_mode = 0;

int aquality = 1;

JPEGXREncoder encoder;

iTilesUniform[0] = 0;

iTilesUniform[1] = 0;

iTilesUniform[2] = (iWidth < 16)?0:iWidth/16;

iTilesUniform[3] = (iHeight < 16)?0:iHeight/16;

inParams.iQuality = (param->Quality* 255)/100;

if(inParams.iQuality < 0) inParams.iQuality = 1;

aquality = inParams.iQuality;

inParams.iOverlap = 0;

inParams.iBands = 0;

inParams.iSampling = 0;

inParams.iTrim = 0;

inParams.bFrequency = 0;

inParams.bCMYKD = 0;

inParams.iShift = -1;

inParams.bAlphaPlane = 0;

inParams.pTilesUniform = iTilesUniform;

if(ExcStatusOk != encoder.Init())

returnfalse;

if(ExcStatusOk != encoder.SetParams(inParams))

returnfalse;

if(ExcStatusOk != encoder.AttachStream(out))

returnfalse;

iChannels = image.NChannels();

iPrecision = image.Precision();

iFormat = image.Format();

iDU = iPrecision/8;

size.SetWidth(image.Width());

size.SetHeight(image.Height());

origin.SetX(0);

origin.SetY(0);

refgrid.SetOrigin(origin);

refgrid.SetSize(size);

geometry.SetRefGridRect(refgrid);

geometry.ReAlloc(iChannels);

geometry.SetEnumSampling(UIC::S444);

dataOrder.ReAlloc(Interleaved, iChannels);

dataOrder.PixelStep()[0] = iChannels * iDU;

dataOrder.LineStep() [0] = image.Step();

imageCn.ColorSpec().ReAlloc(iChannels);

imageCn.ColorSpec().SetEnumColorSpace((ImageEnumColorSpace)image.Color());

imageCn.ColorSpec().SetColorSpecMethod(Enumerated);

imageCn.ColorSpec().SetComponentToColorMap(Direct);

for(i = 0; i < iChannels; i++)

{

if(iPrecision <= 8)

imageCn.ColorSpec().DataRange().SetAsRange8u(IPP_MAX_8U);

elseif(iPrecision <= 16)

{

if(iFormat == IF_UNSIGNED)

imageCn.ColorSpec().DataRange().SetAsRange16u(IPP_MAX_16U);

elseif(iFormat == IF_FIXED)

imageCn.ColorSpec().DataRange().SetAsRange16s(IPP_MIN_16S, IPP_MAX_16S);

else

imageCn.ColorSpec().DataRange().SetAsRange16f(IPP_MAX_16U);

}

else

{

if(iFormat == IF_UNSIGNED)

imageCn.ColorSpec().DataRange().SetAsRange32u(IPP_MAX_32U);

elseif(iFormat == IF_FIXED)

imageCn.ColorSpec().DataRange().SetAsRange32s(IPP_MIN_32S, IPP_MAX_32S);

else

imageCn.ColorSpec().DataRange().SetAsRange32f((Ipp32f)IPP_MIN_32S, (Ipp32f)IPP_MAX_32S);

}

dataPtr.p8u = image;

imageCn.Buffer().Attach(&dataPtr, dataOrder, geometry);

if(ExcStatusOk != encoder.AttachImage(imageCn))

returnfalse;

if(ExcStatusOk != encoder.WriteFileHeader(alpha_mode))

returnfalse;

// Planar alpha support

switch(image.Color())

{

caseRGBA:

caseBGRA:

caseRGBAP:

caseBGRAP:

caseCMYKA:

bAlphaPresent = 1;

break;

}

if(bAlphaPresent && alpha_mode == 1)

{

CIppImage imagePrimary;

CIppImage imageAlpha;

IppiSize iROI = {image.Width(), image.Height()};

Ipp8u* pData = image;

Ipp8u* pDataPr;

Ipp8u* pDataAl;

Ipp32u iStep = image.Step();

Ipp32u iPStep, iAStep;

Ipp32u i, j;

if(0 != imagePrimary.Alloc(image.Width(), image.Height(), iChannels - 1, iPrecision, 1))

returnfalse;

if(0 != imageAlpha.Alloc(image.Width(), image.Height(), 1, iPrecision, 1))

returnfalse;

pDataPr = imagePrimary;

iPStep = imagePrimary.Step();

pDataAl = imageAlpha;

iAStep = imageAlpha.Step();

if(iPrecision == 8)

{

if(image.Color() == IC_CMYKA)

{

for(i = 0; i < iHeight; i++)

{

Ipp8u* pSrc = pData + iStep * i;

Ipp8u* pDstPr = pDataPr + iPStep * i;

Ipp8u* pDstAl = pDataAl + iAStep * i;

for(j = 0; j < iWidth; j++, pSrc += 5, pDstPr += 4, pDstAl++)

{

pDstPr[0] = pSrc[0];

pDstPr[1] = pSrc[1];

pDstPr[2] = pSrc[2];

pDstPr[3] = pSrc[3];

pDstAl[0] = pSrc[4];

}

else

{

ippiCopy_8u_AC4C3R(pData, iStep, pDataPr, iPStep, iROI);

ippiCopy_8u_C4C1R(pData + 3, iStep, pDataAl, iAStep, iROI);

}

elseif(iPrecision == 16)

{

if(image.Color() == IC_CMYKA)

{

for(i = 0; i < iHeight; i++)

{

Ipp16u* pSrc = (Ipp16u*)(pData + iStep * i);

Ipp16u* pDstPr = (Ipp16u*)(pDataPr + iPStep * i);

Ipp16u* pDstAl = (Ipp16u*)(pDataAl + iAStep * i);

for(j = 0; j < iWidth; j++, pSrc += 5, pDstPr += 4, pDstAl++)

{

pDstPr[0] = pSrc[0];

pDstPr[1] = pSrc[1];

pDstPr[2] = pSrc[2];

pDstPr[3] = pSrc[3];

pDstAl[0] = pSrc[4];

}

else

{

ippiCopy_16s_AC4C3R((Ipp16s*)pData, iStep, (Ipp16s*)pDataPr, iPStep, iROI);

ippiCopy_16s_C4C1R((Ipp16s*)pData + 3, iStep, (Ipp16s*)pDataAl, iAStep, iROI);

}

else

{

ippiCopy_32s_AC4C3R((Ipp32s*)pData, iStep, (Ipp32s*)pDataPr, iPStep, iROI);

ippiCopy_32s_C4C1R((Ipp32s*)pData + 3, iStep, (Ipp32s*)pDataAl, iAStep, iROI);

}

geometry.SetRefGridRect(refgrid);

geometry.ReAlloc(iChannels - 1);

geometry.SetEnumSampling(UIC::S444);

dataOrder.ReAlloc(Interleaved, iChannels - 1);

dataOrder.PixelStep()[0] = (iChannels - 1) * iDU;

dataOrder.LineStep() [0] = iPStep;

switch(imageCn.ColorSpec().EnumColorSpace())

{

caseBGRA: imageCn.ColorSpec().SetEnumColorSpace(BGR); break;

caseRGBA: imageCn.ColorSpec().SetEnumColorSpace(RGB); break;

caseBGRAP: imageCn.ColorSpec().SetEnumColorSpace(BGR); break;

caseRGBAP: imageCn.ColorSpec().SetEnumColorSpace(RGB); break;

caseCMYKA: imageCn.ColorSpec().SetEnumColorSpace(CMYK);break;

default:

returnfalse;

}

dataPtr.p8u = pDataPr;

imageCn.Buffer().Attach(&dataPtr, dataOrder, geometry);

if(ExcStatusOk != encoder.AttachImage(imageCn))

returnfalse;

if(ExcStatusOk != encoder.WriteHeader())

returnfalse;

if(ExcStatusOk != encoder.WriteData())

returnfalse;

if(ExcStatusOk != encoder.FreeData())

returnfalse;

geometry.SetRefGridRect(refgrid);

geometry.ReAlloc(1);

geometry.SetEnumSampling(UIC::S444);

dataOrder.ReAlloc(Interleaved, 1);

dataOrder.PixelStep()[0] = iDU;

dataOrder.LineStep() [0] = iAStep;

imageCn.ColorSpec().SetEnumColorSpace(Grayscale);

dataPtr.p8u = pDataAl;

imageCn.Buffer().Attach(&dataPtr, dataOrder, geometry);

inParams.iQuality = aquality;

inParams.bAlphaPlane = 1;

if(ExcStatusOk != encoder.SetParams(inParams))

returnfalse;

if(ExcStatusOk != encoder.AttachImage(imageCn))

returnfalse;

if(ExcStatusOk != encoder.WriteHeader())

returnfalse;

if(ExcStatusOk != encoder.WriteData())

returnfalse;

if(ExcStatusOk != encoder.FreeData())

returnfalse;

}

else

{

if(ExcStatusOk != encoder.WriteHeader())

returnfalse;

if(ExcStatusOk != encoder.WriteData())

returnfalse;

if(ExcStatusOk != encoder.FreeData())

returnfalse;

}

returntrue;

}

Chao_Y_Intel · ‎12-25-2012

Hello, The attached input bmp file looks corrupted, and cannot open from here. Could you have a check? Thanks, Chao

danielwang1971 · ‎01-03-2013

OK,Please try again. Thanks

danielwang1971 · ‎01-03-2013

Hi, I found problem:amount of tiles per rows and columns can't be 0. So the fix is: iTilesUniform[0] = 1; iTilesUniform[1] = 1; Thanks.