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/*
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* Copyright (c) 2006 Cyrille Berger <cberger@cberger.net>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef KIS_YCBCR_U16_COLORSPACE_H
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#define KIS_YCBCR_U16_COLORSPACE_H
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#include <kis_u16_base_colorspace.h>
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#include <klocale.h>
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#define LUMA_RED 0.2989
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#define LUMA_GREEN 0.587
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#define LUMA_BLUE 0.114
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class KisYCbCrU16ColorSpace : public KisU16BaseColorSpace
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{
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public:
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KisYCbCrU16ColorSpace(KisColorSpaceFactoryRegistry* tqparent, KisProfile* p);
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~KisYCbCrU16ColorSpace();
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virtual bool willDegrade(ColorSpaceIndependence )
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{
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return false;
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};
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public:
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void setPixel(TQ_UINT8 *pixel, TQ_UINT16 Y, TQ_UINT16 Cb, TQ_UINT16 Cr, TQ_UINT16 alpha) const;
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void getPixel(const TQ_UINT8 *pixel, TQ_UINT16 *Y, TQ_UINT16 *Cb, TQ_UINT16 *Cr, TQ_UINT16 *alpha) const;
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virtual void fromTQColor(const TQColor& c, TQ_UINT8 *dst, KisProfile * profile = 0);
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virtual void fromTQColor(const TQColor& c, TQ_UINT8 opacity, TQ_UINT8 *dst, KisProfile * profile = 0);
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virtual void toTQColor(const TQ_UINT8 *src, TQColor *c, KisProfile * profile = 0);
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virtual void toTQColor(const TQ_UINT8 *src, TQColor *c, TQ_UINT8 *opacity, KisProfile * profile = 0);
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virtual TQ_UINT8 difference(const TQ_UINT8 *src1, const TQ_UINT8 *src2);
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virtual void mixColors(const TQ_UINT8 **colors, const TQ_UINT8 *weights, TQ_UINT32 nColors, TQ_UINT8 *dst) const;
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virtual TQValueVector<KisChannelInfo *> channels() const;
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virtual TQ_UINT32 nChannels() const;
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virtual TQ_UINT32 nColorChannels() const;
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virtual TQ_UINT32 pixelSize() const;
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virtual TQImage convertToTQImage(const TQ_UINT8 *data, TQ_INT32 width, TQ_INT32 height,
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KisProfile * dstProfile,
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TQ_INT32 renderingIntent,
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float exposure = 0.0f);
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virtual KisCompositeOpList userVisiblecompositeOps() const;
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protected:
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virtual void bitBlt(TQ_UINT8 *dst,
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TQ_INT32 dstRowStride,
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const TQ_UINT8 *src,
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TQ_INT32 srcRowStride,
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const TQ_UINT8 *srcAlphaMask,
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TQ_INT32 maskRowStride,
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TQ_UINT8 opacity,
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TQ_INT32 rows,
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TQ_INT32 cols,
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const KisCompositeOp& op);
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void compositeOver(TQ_UINT8 *dst, TQ_INT32 dstRowStride, const TQ_UINT8 *src, TQ_INT32 srcRowStride, const TQ_UINT8 *tqmask, TQ_INT32 maskRowStride, TQ_INT32 rows, TQ_INT32 columns, TQ_UINT8 opacity);
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void compositeErase(TQ_UINT8 *dst, TQ_INT32 dstRowStride, const TQ_UINT8 *src, TQ_INT32 srcRowStride, const TQ_UINT8 *tqmask, TQ_INT32 maskRowStride, TQ_INT32 rows, TQ_INT32 columns, TQ_UINT8 opacity);
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private:
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#define CLAMP_TO_16BITCHANNEL(a) CLAMP(a, 0, TQ_UINT16_MAX)
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inline TQ_UINT16 computeRed(TQ_UINT16 Y, TQ_UINT16 /*Cb*/, TQ_UINT16 Cr)
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{
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return (TQ_UINT16)( CLAMP_TO_16BITCHANNEL( (Cr - 32768)* (2-2*LUMA_RED) + Y ) );
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}
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inline TQ_UINT16 computeGreen(TQ_UINT16 Y, TQ_UINT16 Cb, TQ_UINT16 Cr)
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{
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return (TQ_UINT16)( CLAMP_TO_16BITCHANNEL( (Y - LUMA_BLUE * computeBlue(Y,Cb,Cr) - LUMA_RED * computeRed(Y,Cb,Cr) ) / LUMA_GREEN ) );
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}
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inline TQ_UINT16 computeBlue(TQ_UINT16 Y, TQ_UINT16 Cb, TQ_UINT16 /*Cr*/)
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{
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return (TQ_UINT16)( CLAMP_TO_16BITCHANNEL( (Cb - 32768)*(2 - 2 * LUMA_BLUE) + Y) );
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}
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inline TQ_UINT16 computeY( TQ_UINT16 r, TQ_UINT16 b, TQ_UINT16 g)
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{
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return (TQ_UINT16)( CLAMP_TO_16BITCHANNEL( LUMA_RED*r + LUMA_GREEN*g + LUMA_BLUE*b ) );
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}
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inline TQ_UINT16 computeCb( TQ_UINT16 r, TQ_UINT16 b, TQ_UINT16 g)
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{
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return (TQ_UINT16)( CLAMP_TO_16BITCHANNEL( (b - computeY(r,g,b))/(2-2*LUMA_BLUE) + 32768) );
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}
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inline TQ_UINT16 computeCr( TQ_UINT16 r, TQ_UINT16 b, TQ_UINT16 g)
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{
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return (TQ_UINT8)( CLAMP_TO_16BITCHANNEL( (r - computeY(r,g,b))/(2-2*LUMA_RED) + 32768) );
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}
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#undef CLAMP_TO_16BITCHANNEL
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static const TQ_UINT8 PIXEL_Y = 0;
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static const TQ_UINT8 PIXEL_Cb = 1;
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static const TQ_UINT8 PIXEL_Cr = 2;
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static const TQ_UINT8 PIXEL_ALPHA = 3;
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struct Pixel {
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TQ_UINT16 Y;
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TQ_UINT16 Cb;
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TQ_UINT16 Cr;
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TQ_UINT16 alpha;
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};
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};
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class KisYCbCrU16ColorSpaceFactory : public KisColorSpaceFactory
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{
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public:
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/**
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* Chalk definition for use in .kra files and internally: unchanging name +
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* i18n'able description.
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*/
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virtual KisID id() const { return KisID("YCbCrAU16", i18n("YCbCr (16-bit integer/channel)")); };
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/**
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* lcms colorspace type definition.
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*/
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virtual TQ_UINT32 colorSpaceType() { return TYPE_YCbCr_16; };
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virtual icColorSpaceSignature colorSpaceSignature() { return icSigYCbCrData; };
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virtual KisColorSpace *createColorSpace(KisColorSpaceFactoryRegistry * tqparent, KisProfile *p) { return new KisYCbCrU16ColorSpace(tqparent, p); };
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virtual TQString defaultProfile() { return ""; };
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};
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#endif
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