umc_color_space_converter_ycbcr.cpp

这是在PCA下的基于IPP库示例代码例子,在网上下了IPP的库之后,设置相关参数就可以编译该代码.

                    Tail *= (nWeight - nCurWeight);
                    Pixel += Tail;
                    Pixel /= nWeight;
                    nCurWeight += nPixelWeight;
                }
                nCurWeight -= nWeight;

                lpDst = Pixel;
                ++lpDst;
            };
        };

    };

} // void resize_hor_YCbCr(void *lpvSrc, IppSize SizeSrc, size_t lPitchSrc,

void ColorSpaceConverter::ResizeYCbCr(ColorConversionParams &ConvertParam)
{
    vm_byte *lpYUV;
    IppiSize SizeSrc = {ConvertParam.ConversionInit.SizeSource.width, ConvertParam.ConversionInit.SizeSource.height};
    IppiSize SizeDst = {ConvertParam.ConversionInit.SizeDest.width, ConvertParam.ConversionInit.SizeDest.height};
    IppiRect RectSrc = {0, 0, SizeSrc.width, SizeSrc.height};
    IppiRect RectDst = {0, 0, SizeDst.width, SizeDst.height};
    size_t lPitchYUV;

    if (ConvertParam.ConversionInit.FormatDest != ConvertParam.ConversionInit.FormatSource)
    {
        size_t lNeededSize;

        // correct dest size(s)
        SizeDst.width = (SizeDst.width + 1) & ~(1);

        // calc needed internal buffer size
        lNeededSize = SizeDst.width * SizeDst.height * 2;
        if (lNeededSize > m_lBufferSize)
        {
            if (false == AllocateInternalBuffer(lNeededSize))
                return;
        };

        lpYUV = reinterpret_cast<vm_byte *> (m_lpvBuffer);
        lPitchYUV = SizeDst.width * 2;
    }
    else
    {
        lpYUV = ConvertParam.lpDest0;

        lPitchYUV = ConvertParam.PitchDest0;
    };


    // check additional free space
    {
        size_t lNeedSpace;

        lNeedSpace = SizeDst.height * SizeSrc.width * 2;

        if ((m_lAdditionalSize < lNeedSpace) &&
            (false == AllocateInternalBuffer(lNeedSpace, m_lAdditionalSize, m_lpvAdditional)))
            return;

    }

    // resize YUV
    // step 1: change vertical size in additional buffer size
    RectSrc.width *= 2;
    SizeSrc.width *= 2;
    SizeDst.width = SizeSrc.width;

//#if !defined (ARM) && !defined (_ARM_)
    ippiResize_8u_C1R(  ConvertParam.lpSource0,
                        SizeSrc,
                        ConvertParam.PitchSource0,
                        RectSrc,
                        reinterpret_cast<vm_byte *> (m_lpvAdditional),
                        SizeDst.width,
                        SizeDst,
                        1.0,
                        static_cast<double> (RectDst.height) / static_cast<double> (RectSrc.height),
                        ConvertParam.ConversionInit.lInterpolation);
//#endif // !defined (ARM) && !defined (_ARM_)
    // step 2: change horizontal size in internal buffer
    SizeSrc.width /= 2;
    SizeSrc.height = SizeDst.height;
    SizeDst.width = (ConvertParam.ConversionInit.SizeDest.width + 1) & ~(1);
    resize_hor_YCbCr(   m_lpvAdditional,
                        SizeSrc,
                        SizeSrc.width * 2,
                        lpYUV,
                        SizeDst,
                        lPitchYUV);

    if (ConvertParam.ConversionInit.FormatDest != ConvertParam.ConversionInit.FormatSource)
    {
        // save new pointer(s)
        ConvertParam.ConversionInit.SizeSource = ConvertParam.ConversionInit.SizeDest;
        ConvertParam.lpSource0 = lpYUV;

        ConvertParam.PitchSource0 = ConvertParam.ConversionInit.SizeSource.width * 2;
    };

} // void ColorSpaceConverter::ResizeYCbCr(ColorConversionParams &ConvertParam)

void ColorSpaceConverter::ConvertFrom_YCbCr_To_YV12(ColorConversionParams &ConvertParam)
{
    // different size. Do resize
    if ((ConvertParam.ConversionInit.SizeSource.width != ConvertParam.ConversionInit.SizeDest.width) ||
        (ConvertParam.ConversionInit.SizeSource.height != ConvertParam.ConversionInit.SizeDest.height))
    {
        // resize image to internal buffer
        ResizeYCbCr(ConvertParam);

    }

//#if !defined (ARM) && !defined (_ARM_)
    // equal size. simple convert
    {
        vm_byte *(pDst[3]) = {ConvertParam.lpDest0,
                            ConvertParam.lpDest1,
                            ConvertParam.lpDest2};
        int dstStep[3] = {  ConvertParam.PitchDest0,
                            ConvertParam.PitchDest1,
                            ConvertParam.PitchDest2};
        IppiSize roiSize = {ConvertParam.ConversionInit.SizeDest.width,
                            ConvertParam.ConversionInit.SizeDest.height};

        ippiYCbCr422ToYCrCb420_8u_C2P3R(ConvertParam.lpSource0,
                                        ConvertParam.PitchSource0,
                                        pDst,
                                        dstStep,
                                        roiSize);
    }
//#endif // !defined (ARM) && !defined (_ARM_)

} // void ColorSpaceConverter::ConvertFrom_YCbCr_To_YV12(ColorConversionParams &ConvertParam)

void ColorSpaceConverter::ConvertFrom_YCbCr_To_NV12(ColorConversionParams &ConvertParam)
{
    // different size. Do resize
    if ((ConvertParam.ConversionInit.SizeSource.width != ConvertParam.ConversionInit.SizeDest.width) ||
        (ConvertParam.ConversionInit.SizeSource.height != ConvertParam.ConversionInit.SizeDest.height))
    {
        // resize image to internal buffer
        ResizeYCbCr(ConvertParam);

    }

//#if !defined (ARM) && !defined (_ARM_)
    // equal size. simple convert
    {
        IppiSize roiSize = {ConvertParam.ConversionInit.SizeDest.width,
                            ConvertParam.ConversionInit.SizeDest.height};

        ippiYCbCr422ToYCbCr420_8u_C2P2R(ConvertParam.lpSource0,
                                        ConvertParam.PitchSource0,
                                        ConvertParam.lpDest0,
                                        ConvertParam.PitchDest0,
                                        ConvertParam.lpDest1,
                                        ConvertParam.PitchDest1,
                                        roiSize);
    }
//#endif // !defined (ARM) && !defined (_ARM_)

} // void ColorSpaceConverter::ConvertFrom_YCbCr_To_NV12(ColorConversionParams &ConvertParam)

void ColorSpaceConverter::ConvertFrom_YCbCr_To_CbYCr(ColorConversionParams &ConvertParam)
{
    // different size. Do resize
    if ((ConvertParam.ConversionInit.SizeSource.width != ConvertParam.ConversionInit.SizeDest.width) ||
        (ConvertParam.ConversionInit.SizeSource.height != ConvertParam.ConversionInit.SizeDest.height))
    {
        // resize image to internal buffer
        ResizeYCbCr(ConvertParam);

    }

//#if !defined (ARM) && !defined (_ARM_)
    // equal size. simple convert
    {
        IppiSize roiSize = {ConvertParam.ConversionInit.SizeDest.width,
                            ConvertParam.ConversionInit.SizeDest.height};

        ippiYCbCr422ToCbYCr422_8u_C2R(ConvertParam.lpSource0,
                                      ConvertParam.PitchSource0,
                                      ConvertParam.lpDest0,
                                      ConvertParam.PitchDest0,
                                      roiSize);
    };
//#endif // !defined (ARM) && !defined (_ARM_)

} // void ColorSpaceConverter::ConvertFrom_YCbCr_To_CbYCr(ColorConversionParams &ConvertParam)

void ColorSpaceConverter::ConvertFrom_YCbCr_To_YCbCr(ColorConversionParams &ConvertParam)
{
    // different size. Do resize
    if ((ConvertParam.ConversionInit.SizeSource.width != ConvertParam.ConversionInit.SizeDest.width) ||
        (ConvertParam.ConversionInit.SizeSource.height != ConvertParam.ConversionInit.SizeDest.height))
    {
        // resize image to internal buffer
        ResizeYCbCr(ConvertParam);

    }
    else
    {
        IppiSize Size = {ConvertParam.ConversionInit.SizeDest.width, ConvertParam.ConversionInit.SizeDest.height};

        Size.width *= 2;
        // equal size. simple copy
        ippiCopy_8u_C1R(    ConvertParam.lpSource0,
                            ConvertParam.PitchSource0,
                            ConvertParam.lpDest0,
                            ConvertParam.PitchDest0,
                            Size);
    }

} // void ColorSpaceConverter::ConvertFrom_YCbCr_To_YCbCr(ColorConversionParams &ConvertParam)

void ColorSpaceConverter::ConvertFrom_YCbCr_To_YUV411(ColorConversionParams &/*ConvertParam*/)
{
    vm_debug_msg(0, __VM_STRING("This function isn't realized."));

} // void ColorSpaceConverter::ConvertFrom_YCbCr_To_YUV411(ColorConversionParams &ConvertParam)

void ColorSpaceConverter::ConvertFrom_YCbCr_To_YUV420(ColorConversionParams &/*ConvertParam*/)
{
    vm_debug_msg(0, __VM_STRING("This function isn't realized."));

} // void ColorSpaceConverter::ConvertFrom_YCbCr_To_YUV420(ColorConversionParams &ConvertParam)

void ColorSpaceConverter::ConvertFrom_YCbCr_To_YUV420M(ColorConversionParams &/*ConvertParam*/)
{
    vm_debug_msg(0, __VM_STRING("This function isn't realized."));

} // void ColorSpaceConverter::ConvertFrom_YCbCr_To_YUV420M(ColorConversionParams &ConvertParam)

void ColorSpaceConverter::ConvertFrom_YCbCr_To_RGB32(ColorConversionParams &/*ConvertParam*/)
{
    /** THIS IS AVAILABLE
    ippiYCbCr422ToBGR_8u_C2C4R */

} // void ColorSpaceConverter::ConvertFrom_YCbCr_To_RGB32(ColorConversionParams &ConvertParam)

void ColorSpaceConverter::ConvertFrom_YCbCr_To_RGB24(ColorConversionParams &/*ConvertParam*/)
{
    /** THIS IS AVAILABLE
    ippiYCbCr422ToBGR_8u_C2C3R */

} // void ColorSpaceConverter::ConvertFrom_YCbCr_To_RGB24(ColorConversionParams &ConvertParam)

void ColorSpaceConverter::ConvertFrom_YCbCr_To_RGB565(ColorConversionParams &/*ConvertParam*/)
{
    /** THIS IS AVAILABLE
    ippiYCbCr422ToBGR565_8u16u_C2C3R */

} // void ColorSpaceConverter::ConvertFrom_YCbCr_To_RGB565(ColorConversionParams &ConvertParam)

void ColorSpaceConverter::ConvertFrom_YCbCr_To_RGB555(ColorConversionParams &/*ConvertParam*/)
{
    /** THIS IS AVAILABLE
    ippiYCbCr422ToBGR555_8u16u_C2C3R */

} // void ColorSpaceConverter::ConvertFrom_YCbCr_To_RGB555(ColorConversionParams &ConvertParam)

void ColorSpaceConverter::ConvertFrom_YCbCr_To_RGB444(ColorConversionParams &/*ConvertParam*/)
{
    /** THIS IS AVAILABLE
    ippiYCbCr422ToBGR444_8u16u_C2C3R */

} // void ColorSpaceConverter::ConvertFrom_YCbCr_To_RGB444(ColorConversionParams &ConvertParam)

} // end namespace UMC