diff options
Diffstat (limited to 'chalk/chalkcolor/colorspaces/kis_lab_colorspace.cpp')
| -rw-r--r-- | chalk/chalkcolor/colorspaces/kis_lab_colorspace.cpp | 571 |
1 files changed, 571 insertions, 0 deletions
diff --git a/chalk/chalkcolor/colorspaces/kis_lab_colorspace.cpp b/chalk/chalkcolor/colorspaces/kis_lab_colorspace.cpp new file mode 100644 index 000000000..c5c7ac5a0 --- /dev/null +++ b/chalk/chalkcolor/colorspaces/kis_lab_colorspace.cpp @@ -0,0 +1,571 @@ + /* + * Copyright (c) 2002 Patrick Julien <freak@codepimps.org> + * Copyright (c) 2004 Boudewijn Rempt <boud@valdyas.org> + * Copyright (c) 2005 Adrian Page <adrian@pagenet.plus.com> + * Copyright (c) 2005 Casper Boemann <cbr@boemann.dk> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ + +#include <config.h> +#include <limits.h> +#include <stdlib.h> +#include LCMS_HEADER + +#include <tqimage.h> + +#include <kdebug.h> +#include <tdelocale.h> + +#include "kis_lab_colorspace.h" +#include "kis_color_conversions.h" +#include "kis_integer_maths.h" + +KisLabColorSpace::KisLabColorSpace(KisColorSpaceFactoryRegistry * parent, KisProfile *p) + : KisU16BaseColorSpace(KisID("LABA", i18n("L*a*b* (16-bit integer/channel)")), + COLORSPACE_SH(PT_Lab)|CHANNELS_SH(3)|BYTES_SH(2)|EXTRA_SH(1), + icSigLabData, parent, p) + +{ + m_channels.push_back(new KisChannelInfo(i18n("Lightness"), i18n("L"), CHANNEL_L * sizeof(TQ_UINT16), KisChannelInfo::COLOR, KisChannelInfo::UINT16, sizeof(TQ_UINT16), TQColor(100,100,100))); + m_channels.push_back(new KisChannelInfo(i18n("a*"), i18n("a"), CHANNEL_A * sizeof(TQ_UINT16), KisChannelInfo::COLOR, KisChannelInfo::UINT16, sizeof(TQ_UINT16), TQColor(150,150,150))); + m_channels.push_back(new KisChannelInfo(i18n("b*"), i18n("b"), CHANNEL_B * sizeof(TQ_UINT16), KisChannelInfo::COLOR, KisChannelInfo::UINT16, sizeof(TQ_UINT16), TQColor(200,200,200))); + m_channels.push_back(new KisChannelInfo(i18n("Alpha"), i18n("A"), CHANNEL_ALPHA * sizeof(TQ_UINT16), KisChannelInfo::ALPHA, KisChannelInfo::UINT16, sizeof(TQ_UINT16))); + + m_alphaPos = CHANNEL_ALPHA * sizeof(TQ_UINT16); + + init(); +} + +KisLabColorSpace::~KisLabColorSpace() +{ +} + +TQ_UINT8 * KisLabColorSpace::toLabA16(const TQ_UINT8 * data, const TQ_UINT32 nPixels) const +{ + TQ_UINT8 * pixels = new TQ_UINT8[nPixels * pixelSize()]; + memcpy( pixels, data, nPixels * pixelSize() ); + return pixels; +} + +TQ_UINT8 * KisLabColorSpace::fromLabA16(const TQ_UINT8 * labData, const TQ_UINT32 nPixels) const +{ + TQ_UINT8 * pixels = new TQ_UINT8[nPixels * pixelSize()]; + memcpy( pixels, labData, nPixels * pixelSize() ); + return pixels; +} + +TQ_UINT8 KisLabColorSpace::difference(const TQ_UINT8 *src1, const TQ_UINT8 *src2) +{ + cmsCIELab labF1, labF2; + + if (getAlpha(src1) == OPACITY_TRANSPARENT || getAlpha(src2) == OPACITY_TRANSPARENT) + return (getAlpha(src1) == getAlpha(src2) ? 0 : 255); + + cmsLabEncoded2Float(&labF1, (WORD *)src1); + cmsLabEncoded2Float(&labF2, (WORD *)src2); + double diff = cmsDeltaE(&labF1, &labF2); + if(diff>255) + return 255; + else + return TQ_INT8(diff); +} + +void KisLabColorSpace::mixColors(const TQ_UINT8 **colors, const TQ_UINT8 *weights, TQ_UINT32 nColors, TQ_UINT8 *dst) const +{ + TQ_UINT32 totalLightness = 0, totalAlpha = 0; + TQ_UINT32 totala = 0, totalb = 0; + + while (nColors--) + { + const Pixel *color = reinterpret_cast<const Pixel *>( *colors ); + TQ_UINT32 alphaTimesWeight = UINT8_MULT(color->alpha, *weights); + + totalLightness += color->lightness * alphaTimesWeight; + totala += color->a * alphaTimesWeight; + totalb += color->b * alphaTimesWeight; + totalAlpha += alphaTimesWeight; + + weights++; + colors++; + } + + if (totalAlpha > UINT16_MAX) { + totalAlpha = UINT16_MAX; + } + + ((Pixel *)dst)->alpha = totalAlpha; + + if (totalAlpha > 0) { + totalLightness /= totalAlpha; + totala /= totalAlpha; + totalb /= totalAlpha; + } // else the values are already 0 too + + if (totalLightness > MAX_CHANNEL_L) { + totalLightness = MAX_CHANNEL_L; + } + + ((Pixel *)dst)->lightness = totalLightness; + + if (totala > MAX_CHANNEL_AB) { + totala = MAX_CHANNEL_AB; + } + + ((Pixel *)dst)->a = totala; + + if (totalb > MAX_CHANNEL_AB) { + totalb = MAX_CHANNEL_AB; + } + + ((Pixel *)dst)->b = totalb; +} + +void KisLabColorSpace::invertColor(TQ_UINT8 * src, TQ_INT32 nPixels) +{ + TQ_UINT32 psize = pixelSize(); + + while (nPixels--) + { + Pixel * s = reinterpret_cast<Pixel *>( src ); + + s->lightness = MAX_CHANNEL_L - s->lightness; + s->a = MAX_CHANNEL_AB - s->a; + s->b = MAX_CHANNEL_AB - s->b; + + src += psize; + } +} + +void KisLabColorSpace::convolveColors(TQ_UINT8** colors, TQ_INT32 * kernelValues, KisChannelInfo::enumChannelFlags channelFlags, + TQ_UINT8 *dst, TQ_INT32 factor, TQ_INT32 offset, TQ_INT32 nColors) const +{ + TQ_INT32 totalL = 0, totalA = 0, totalB = 0, totalAlpha = 0; + + while ( nColors -- ) + { + const Pixel * pixel = reinterpret_cast<const Pixel *>( *colors ); + TQ_INT32 weight = *kernelValues; + if ( weight != 0 ) { + totalL += pixel->lightness * weight; + totalA += pixel->a * weight; + totalB += pixel->b * weight; + totalAlpha += pixel->alpha * weight; + } + colors++; + kernelValues++; + } + + + Pixel * p = reinterpret_cast< Pixel *>( dst ); + + if (channelFlags & KisChannelInfo::FLAG_COLOR) { + p->lightness = CLAMP( ( totalL / factor) + offset, 0, TQ_UINT16_MAX); + p->a = CLAMP( ( totalA / factor) + offset, 0, TQ_UINT16_MAX); + p->b = CLAMP( ( totalB / factor) + offset, 0, TQ_UINT16_MAX); + } + if (channelFlags & KisChannelInfo::FLAG_ALPHA) { + p->alpha = CLAMP((totalAlpha/ factor) + offset, 0, TQ_UINT16_MAX); + } + +} + +void KisLabColorSpace::darken(const TQ_UINT8 * src, TQ_UINT8 * dst, TQ_INT32 shade, bool compensate, double compensation, TQ_INT32 nPixels) const +{ + // XXX: Is the 255 right for u16 colorspaces? + TQ_UINT32 pSize = pixelSize(); + while ( nPixels-- ) { + const Pixel * s = reinterpret_cast<const Pixel*>( src ); + Pixel * d = reinterpret_cast<Pixel*>( dst ); + + if ( compensate ) { + d->lightness = static_cast<TQ_UINT16>( ( s->lightness * shade ) / ( compensation * 255 ) ); + } + else { + d->lightness = static_cast<TQ_UINT16>( s->lightness * shade / 255 ); + } + d->a = s->a; + d->b = s->b; + d->alpha = s->alpha; + + src += pSize; + dst += pSize; + } +} + + +TQValueVector<KisChannelInfo *> KisLabColorSpace::channels() const +{ + return m_channels; +} + +TQ_UINT32 KisLabColorSpace::nChannels() const +{ + return NUM_CHANNELS; +} + +TQ_UINT32 KisLabColorSpace::nColorChannels() const +{ + return NUM_COLOR_CHANNELS; +} + +TQ_UINT32 KisLabColorSpace::pixelSize() const +{ + return sizeof(Pixel); +} + +void KisLabColorSpace::getSingleChannelPixel(TQ_UINT8 *dst, const TQ_UINT8 *src, TQ_UINT32 channelIndex) +{ + if (channelIndex < NUM_CHANNELS) { + + const Pixel *srcPixel = reinterpret_cast<const Pixel *>(src); + Pixel *dstPixel = reinterpret_cast<Pixel *>(dst); + + switch (channelIndex) { + case CHANNEL_L: + dstPixel->lightness = srcPixel->lightness; + dstPixel->a = CHANNEL_AB_ZERO_OFFSET; + dstPixel->b = CHANNEL_AB_ZERO_OFFSET; + dstPixel->alpha = U16_OPACITY_TRANSPARENT; + break; + case CHANNEL_A: + dstPixel->lightness = MAX_CHANNEL_L / 2; + dstPixel->a = srcPixel->a; + dstPixel->b = CHANNEL_AB_ZERO_OFFSET; + dstPixel->alpha = U16_OPACITY_TRANSPARENT; + break; + case CHANNEL_B: + dstPixel->lightness = MAX_CHANNEL_L / 2; + dstPixel->a = CHANNEL_AB_ZERO_OFFSET; + dstPixel->b = srcPixel->b; + dstPixel->alpha = U16_OPACITY_TRANSPARENT; + break; + case CHANNEL_ALPHA: + dstPixel->lightness = MAX_CHANNEL_L / 2; + dstPixel->a = CHANNEL_AB_ZERO_OFFSET; + dstPixel->b = CHANNEL_AB_ZERO_OFFSET; + dstPixel->alpha = srcPixel->alpha; + break; + } + } +} + +void KisLabColorSpace::compositeOver(TQ_UINT8 *dstRowStart, TQ_INT32 dstRowStride, const TQ_UINT8 *srcRowStart, TQ_INT32 srcRowStride, const TQ_UINT8 *maskRowStart, TQ_INT32 maskRowStride, TQ_INT32 rows, TQ_INT32 numColumns, TQ_UINT16 opacity) +{ + while (rows > 0) { + const Pixel *src = reinterpret_cast<const Pixel *>(srcRowStart); + Pixel *dst = reinterpret_cast<Pixel *>(dstRowStart); + const TQ_UINT8 *mask = maskRowStart; + TQ_INT32 columns = numColumns; + + while (columns > 0) { + + TQ_UINT16 srcAlpha = src->alpha; + + // apply the alphamask + if (mask != 0) { + if (*mask != OPACITY_OPAQUE) { + srcAlpha = UINT16_MULT(srcAlpha, *mask); + } + mask++; + } + + if (srcAlpha != U16_OPACITY_TRANSPARENT) { + + if (opacity != U16_OPACITY_OPAQUE) { + srcAlpha = UINT16_MULT(srcAlpha, opacity); + } + + if (srcAlpha == U16_OPACITY_OPAQUE) { + memcpy(dst, src, sizeof(Pixel)); + } else { + TQ_UINT16 dstAlpha = dst->alpha; + + TQ_UINT16 srcBlend; + + if (dstAlpha == U16_OPACITY_OPAQUE) { + srcBlend = srcAlpha; + } else { + TQ_UINT16 newAlpha = dstAlpha + UINT16_MULT(U16_OPACITY_OPAQUE - dstAlpha, srcAlpha); + dst->alpha = newAlpha; + + if (newAlpha != 0) { + srcBlend = UINT16_DIVIDE(srcAlpha, newAlpha); + } else { + srcBlend = srcAlpha; + } + } + + if (srcBlend == U16_OPACITY_OPAQUE) { + memcpy(dst, src, sizeof(Pixel)); + } else { +/*printf("blend is %d\n", srcBlend); +printf("%d %d %d\n", src->lightness, src->a, src->b); +printf("%d %d %d\n", dst->lightness, dst->a, dst->b); +*/ + dst->lightness = UINT16_BLEND(src->lightness, dst->lightness, srcBlend); + dst->a = UINT16_BLEND(src->a, dst->a, srcBlend); + dst->b = UINT16_BLEND(src->b, dst->b, srcBlend); +//printf("%d %d %d\n", dst->lightness, dst->a, dst->b); + } + } + } + + columns--; + src++; + dst++; + } + + rows--; + srcRowStart += srcRowStride; + dstRowStart += dstRowStride; + if(maskRowStart) { + maskRowStart += maskRowStride; + } + } +} + +void KisLabColorSpace::compositeErase(TQ_UINT8 *dst, + TQ_INT32 dstRowSize, + const TQ_UINT8 *src, + TQ_INT32 srcRowSize, + const TQ_UINT8 *srcAlphaMask, + TQ_INT32 maskRowStride, + TQ_INT32 rows, + TQ_INT32 cols, + TQ_UINT16 /*opacity*/) +{ + while (rows-- > 0) + { + const Pixel *s = reinterpret_cast<const Pixel *>(src); + Pixel *d = reinterpret_cast<Pixel *>(dst); + const TQ_UINT8 *mask = srcAlphaMask; + + for (TQ_INT32 i = cols; i > 0; i--, s++, d++) + { + TQ_UINT16 srcAlpha = s->alpha; + + // apply the alphamask + if (mask != 0) { + TQ_UINT8 U8_mask = *mask; + + if (U8_mask != OPACITY_OPAQUE) { + srcAlpha = UINT16_BLEND(srcAlpha, U16_OPACITY_OPAQUE, UINT8_TO_UINT16(U8_mask)); + } + mask++; + } + d->alpha = UINT16_MULT(srcAlpha, d->alpha); + } + + dst += dstRowSize; + src += srcRowSize; + if(srcAlphaMask) { + srcAlphaMask += maskRowStride; + } + } +} + +void KisLabColorSpace::bitBlt(TQ_UINT8 *dst, + TQ_INT32 dstRowStride, + const TQ_UINT8 *src, + TQ_INT32 srcRowStride, + const TQ_UINT8 *mask, + TQ_INT32 maskRowStride, + TQ_UINT8 U8_opacity, + TQ_INT32 rows, + TQ_INT32 cols, + const KisCompositeOp& op) +{ + TQ_UINT16 opacity = UINT8_TO_UINT16(U8_opacity); + + switch (op.op()) { + case COMPOSITE_UNDEF: + // Undefined == no composition + break; + case COMPOSITE_OVER: + compositeOver(dst, dstRowStride, src, srcRowStride, mask, maskRowStride, rows, cols, opacity); + break; + case COMPOSITE_IN: + //compositeIn(pixelSize(), dst, dstRowStride, src, srcRowStride, rows, cols, opacity); + break; + case COMPOSITE_OUT: + //compositeOut(pixelSize(), dst, dstRowStride, src, srcRowStride, rows, cols, opacity); + break; + case COMPOSITE_ATOP: + //compositeAtop(pixelSize(), dst, dstRowStride, src, srcRowStride, rows, cols, opacity); + break; + case COMPOSITE_XOR: + //compositeXor(pixelSize(), dst, dstRowStride, src, srcRowStride, rows, cols, opacity); + break; + case COMPOSITE_PLUS: + //compositePlus(pixelSize(), dst, dstRowStride, src, srcRowStride, rows, cols, opacity); + break; + case COMPOSITE_MINUS: + //compositeMinus(pixelSize(), dst, dstRowStride, src, srcRowStride, rows, cols, opacity); + break; + case COMPOSITE_ADD: + //compositeAdd(pixelSize(), dst, dstRowStride, src, srcRowStride, rows, cols, opacity); + break; + case COMPOSITE_SUBTRACT: + //compositeSubtract(pixelSize(), dst, dstRowStride, src, srcRowStride, rows, cols, opacity); + break; + case COMPOSITE_DIFF: + //compositeDiff(pixelSize(), dst, dstRowStride, src, srcRowStride, rows, cols, opacity); + break; + case COMPOSITE_MULT: + //compositeMultiply(dst, dstRowStride, src, srcRowStride, mask, maskRowStride, rows, cols, opacity); + break; + case COMPOSITE_DIVIDE: + //compositeDivide(dst, dstRowStride, src, srcRowStride, mask, maskRowStride, rows, cols, opacity); + break; + case COMPOSITE_BUMPMAP: + //compositeBumpmap(pixelSize(), dst, dstRowStride, src, srcRowStride, rows, cols, opacity); + break; + case COMPOSITE_COPY: + compositeCopy(dst, dstRowStride, src, srcRowStride, mask, maskRowStride, rows, cols, U8_opacity); + break; + case COMPOSITE_COPY_RED: + //compositeCopyRed(pixelSize(), dst, dstRowStride, src, srcRowStride, rows, cols, opacity); + break; + case COMPOSITE_COPY_GREEN: + //compositeCopyGreen(pixelSize(), dst, dstRowStride, src, srcRowStride, rows, cols, opacity); + break; + case COMPOSITE_COPY_BLUE: + //compositeCopyBlue(pixelSize(), dst, dstRowStride, src, srcRowStride, rows, cols, opacity); + break; + case COMPOSITE_COPY_OPACITY: + //compositeCopyOpacity(pixelSize(), dst, dstRowStride, src, srcRowStride, rows, cols, opacity); + break; + case COMPOSITE_CLEAR: + //compositeClear(pixelSize(), dst, dstRowStride, src, srcRowStride, rows, cols, opacity); + break; + case COMPOSITE_DISSOLVE: + //compositeDissolve(pixelSize(), dst, dstRowStride, src, srcRowStride, rows, cols, opacity); + break; + case COMPOSITE_DISPLACE: + //compositeDisplace(pixelSize(), dst, dstRowStride, src, srcRowStride, rows, cols, opacity); + break; +#if 0 + case COMPOSITE_MODULATE: + compositeModulate(pixelSize(), dst, dstRowStride, src, srcRowStride, rows, cols, opacity); + break; + case COMPOSITE_THRESHOLD: + compositeThreshold(pixelSize(), dst, dstRowStride, src, srcRowStride, rows, cols, opacity); + break; +#endif + case COMPOSITE_NO: + // No composition. + break; + case COMPOSITE_DARKEN: + //compositeDarken(dst, dstRowStride, src, srcRowStride, mask, maskRowStride, rows, cols, opacity); + break; + case COMPOSITE_LIGHTEN: + //compositeLighten(dst, dstRowStride, src, srcRowStride, mask, maskRowStride, rows, cols, opacity); + break; + case COMPOSITE_HUE: + //compositeHue(dst, dstRowStride, src, srcRowStride, mask, maskRowStride, rows, cols, opacity); + break; + case COMPOSITE_SATURATION: + //compositeSaturation(dst, dstRowStride, src, srcRowStride, mask, maskRowStride, rows, cols, opacity); + break; + case COMPOSITE_VALUE: + //compositeValue(dst, dstRowStride, src, srcRowStride, mask, maskRowStride, rows, cols, opacity); + break; + case COMPOSITE_COLOR: + //compositeColor(dst, dstRowStride, src, srcRowStride, mask, maskRowStride, rows, cols, opacity); + break; + case COMPOSITE_COLORIZE: + //compositeColorize(pixelSize(), dst, dstRowStride, src, srcRowStride, rows, cols, opacity); + break; + case COMPOSITE_LUMINIZE: + //compositeLuminize(pixelSize(), dst, dstRowStride, src, srcRowStride, rows, cols, opacity); + break; + case COMPOSITE_SCREEN: + //compositeScreen(dst, dstRowStride, src, srcRowStride, mask, maskRowStride, rows, cols, opacity); + break; + case COMPOSITE_OVERLAY: + //compositeOverlay(dst, dstRowStride, src, srcRowStride, mask, maskRowStride, rows, cols, opacity); + break; + case COMPOSITE_ERASE: + compositeErase(dst, dstRowStride, src, srcRowStride, mask, maskRowStride, rows, cols, opacity); + break; + case COMPOSITE_DODGE: + //compositeDodge(dst, dstRowStride, src, srcRowStride, mask, maskRowStride, rows, cols, opacity); + break; + case COMPOSITE_BURN: + //compositeBurn(dst, dstRowStride, src, srcRowStride, mask, maskRowStride, rows, cols, opacity); + break; + case COMPOSITE_ALPHA_DARKEN: + abstractCompositeAlphaDarken<TQ_UINT16, U16Mult, Uint8ToU16, U16OpacityTest, + CHANNEL_ALPHA, NUM_COLOR_CHANNELS, NUM_CHANNELS>( + dst, dstRowStride, src, srcRowStride, mask, maskRowStride, + rows, cols, opacity, U16Mult(), Uint8ToU16(), U16OpacityTest()); + break; + default: + break; + } +} + +KisCompositeOpList KisLabColorSpace::userVisiblecompositeOps() const +{ + KisCompositeOpList list; + + list.append(KisCompositeOp(COMPOSITE_OVER)); + list.append(KisCompositeOp(COMPOSITE_ALPHA_DARKEN)); + + return list; +} + +TQString KisLabColorSpace::channelValueText(const TQ_UINT8 *U8_pixel, TQ_UINT32 channelIndex) const +{ + const Pixel *pix = reinterpret_cast<const Pixel *>(U8_pixel); + Q_ASSERT(channelIndex < nChannels()); + switch(channelIndex) + { + case CHANNEL_L: + return TQString().setNum(pix->lightness); + case CHANNEL_A: + return TQString().setNum(pix->a); + case CHANNEL_B: + return TQString().setNum(pix->b); + case CHANNEL_ALPHA: + return TQString().setNum(pix->alpha); + default: + return TQString("Error"); + } +} + +TQString KisLabColorSpace::normalisedChannelValueText(const TQ_UINT8 *U8_pixel, TQ_UINT32 channelIndex) const +{ + const Pixel *pix = reinterpret_cast<const Pixel *>(U8_pixel); + Q_ASSERT(channelIndex < nChannels()); + + // These convert from lcms encoded format to standard ranges. + + switch(channelIndex) + { + case CHANNEL_L: + return TQString().setNum(100.0 * static_cast<float>(pix->lightness) / MAX_CHANNEL_L); + case CHANNEL_A: + return TQString().setNum(100.0 * ((static_cast<float>(pix->a) - CHANNEL_AB_ZERO_OFFSET) / MAX_CHANNEL_AB)); + case CHANNEL_B: + return TQString().setNum(100.0 * ((static_cast<float>(pix->b) - CHANNEL_AB_ZERO_OFFSET) / MAX_CHANNEL_AB)); + case CHANNEL_ALPHA: + return TQString().setNum(100.0 * static_cast<float>(pix->alpha) / UINT16_MAX); + default: + return TQString("Error"); + } +} + |