ExcStatus ReadData(
const ImageDataPtr* data,
const ImageDataOrder& dataOrder)
{
JERRCODE jerr;
if(dataOrder.ComponentOrder() == UIC::Interleaved)
{
if(m_precision <= 8)
{
jerr = CJPEGDecoder::SetDestination(data[0].p8u , dataOrder.LineStep()[0], m_size, m_nchannels, m_color, m_sampling, m_precision, m_params.GetDCTScaleFactor());
if(JPEG_OK != jerr)
return ExcStatusFail;
jerr = CJPEGDecoder::SetThreadingMode(m_params.GetThreadingMode());
if(JPEG_OK != jerr)
return ExcStatusFail;
}
else
{
jerr = CJPEGDecoder::SetDestination(data[0].p16s, dataOrder.LineStep()[0], m_size, m_nchannels, m_color, m_sampling, m_precision);
if(JPEG_OK != jerr)
return ExcStatusFail;
}
}
else // UIC::Plane
{
if(m_precision <= 8)
{
Ipp8u* p[4];
for(int i = 0; i < m_nchannels; i++)
p[i] = data[i].p8u;
jerr = CJPEGDecoder::SetDestination((Ipp8u**)p , dataOrder.LineStep(), m_size, m_nchannels, m_color, m_sampling, m_precision, m_params.GetDCTScaleFactor());
if(JPEG_OK != jerr)
return ExcStatusFail;
}
else
{
Ipp16u* p[4];
for(int i = 0; i < m_nchannels; i++)
p[i] = data[i].p16u;
jerr = CJPEGDecoder::SetDestination((Ipp16s**)p, dataOrder.LineStep(), m_size, m_nchannels, m_color, m_sampling, m_precision);
if(JPEG_OK != jerr)
return ExcStatusFail;
}
}
jerr = CJPEGDecoder::ReadData();
if(JPEG_OK != jerr)
return ExcStatusFail;
return ExcStatusOk;
} // JPEGDecoder::ReadData()
IM_ERROR SaveImageBMP(
CIppImage& image,
PARAMS_BMP&,
BaseStreamOutput& out)
{
int i;
int nOfComponents;
Image imageCn;
Rect refgrid;
Point origin;
RectSize size;
ImageDataPtr dataPtr;
ImageColorSpec colorSpec;
ImageDataOrder dataOrder;
ImageSamplingGeometry geometry;
BMPEncoder encoder;
if(ExcStatusOk != encoder.Init())
return IE_INIT;
if(ExcStatusOk != encoder.AttachStream(out))
return IE_ASTREAM;
nOfComponents = image.NChannels();
dataOrder.SetDataType(T8u);
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(nOfComponents);
geometry.SetEnumSampling(S444);
dataOrder.ReAlloc(Interleaved, nOfComponents);
dataOrder.PixelStep()[0] = nOfComponents;
dataOrder.LineStep() [0] = image.Step();
imageCn.ColorSpec().ReAlloc(nOfComponents);
imageCn.ColorSpec().SetColorSpecMethod(Enumerated);
imageCn.ColorSpec().SetComponentToColorMap(Direct);
for(i = 0; i < nOfComponents; i++)
imageCn.ColorSpec().DataRange()[i].SetAsRange8u(255);
switch(image.NChannels())
{
case 1: imageCn.ColorSpec().SetEnumColorSpace(Grayscale); break;
case 3: imageCn.ColorSpec().SetEnumColorSpace(BGR); break;
case 4: imageCn.ColorSpec().SetEnumColorSpace(BGRA); break;
default:
break;
}
int dstOrder_c3[3] = {2, 1, 0};
int dstOrder_c4[4] = {2, 1, 0, 3};
if(image.NChannels() == 3 && image.Color() == IC_RGB)
{
image.SwapChannels(dstOrder_c3);
image.Color((IM_COLOR)IC_BGR);
}
else if(image.NChannels() == 4 && image.Color() == IC_RGBA)
{
image.SwapChannels(dstOrder_c4);
image.Color((IM_COLOR)IC_BGRA);
}
dataPtr.p8u = image;
imageCn.Buffer().Attach(&dataPtr,dataOrder,geometry);
if(ExcStatusOk != encoder.AttachImage(imageCn))
return IE_AIMAGE;
if(ExcStatusOk != encoder.WriteHeader())
return IE_WHEADER;
if(ExcStatusOk != encoder.WriteData())
return IE_WDATA;
return IE_OK;
} // SaveImageBMP()
IM_ERROR ReadImageBMP(
BaseStreamInput& in,
PARAMS_BMP&,
CIppImage& image)
{
int i;
Image imageCn;
IppiSize roi;
ImageDataPtr dataPtr;
ImageDataOrder dataOrder;
ImageColorSpec colorSpec;
ImageSamplingGeometry geometry;
BMPDecoder decoder;
if(ExcStatusOk != decoder.Init())
return IE_INIT;
if(ExcStatusOk != decoder.AttachStream(in))
return IE_ASTREAM;
if(ExcStatusOk != decoder.ReadHeader(colorSpec,geometry))
return IE_RHEADER;
int nOfComponents = geometry.NOfComponents();
dataOrder.SetDataType(T8u);
dataOrder.ReAlloc(Interleaved, nOfComponents);
dataOrder.PixelStep()[0] = nOfComponents;
dataOrder.LineStep() [0] = geometry.RefGridRect().Width() * nOfComponents + BYTES_PAD(geometry.RefGridRect().Width(), nOfComponents, 1);
imageCn.ColorSpec().ReAlloc(nOfComponents);
imageCn.ColorSpec().SetColorSpecMethod(Enumerated);
imageCn.ColorSpec().SetComponentToColorMap(Direct);
for(i = 0; i < nOfComponents; i++)
imageCn.ColorSpec().DataRange()[i].SetAsRange8u(255);
ImageEnumColorSpace in_color;
ImageEnumColorSpace out_color;
in_color = colorSpec.EnumColorSpace();
out_color = in_color;
imageCn.ColorSpec().SetEnumColorSpace(out_color);
image.Color((IM_COLOR)image.UicToIppColor(out_color));
roi.width = geometry.RefGridRect().Width();
roi.height = geometry.RefGridRect().Height();
if(0 != image.Alloc(roi,nOfComponents,8,1))
return IE_ALLOC;
dataPtr.p8u = image;
imageCn.Buffer().Attach(&dataPtr,dataOrder,geometry);
if(ExcStatusOk != decoder.ReadData(imageCn.Buffer().DataPtr(),dataOrder))
return IE_RDATA;
return IE_OK;
} // ReadImageBMP()
