diff options
Diffstat (limited to 'chalk/colorspaces/gray_u8/kis_gray_colorspace.cpp')
| -rw-r--r-- | chalk/colorspaces/gray_u8/kis_gray_colorspace.cpp | 997 |
1 files changed, 997 insertions, 0 deletions
diff --git a/chalk/colorspaces/gray_u8/kis_gray_colorspace.cpp b/chalk/colorspaces/gray_u8/kis_gray_colorspace.cpp new file mode 100644 index 000000000..989cc2c58 --- /dev/null +++ b/chalk/colorspaces/gray_u8/kis_gray_colorspace.cpp @@ -0,0 +1,997 @@ +/* + * Copyright (c) 2002 Patrick Julien <freak@codepimps.org> + * Copyright (c) 2004 Cyrille Berger + * Copyright (c) 2004 Boudewijn Rempt <boud@valdyas.org> + * + * 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 <limits.h> +#include <stdlib.h> + +#include <config.h> +#include LCMS_HEADER + +#include <tqimage.h> + +#include <tdelocale.h> +#include <kdebug.h> +#include <tdeglobal.h> + +#include "kis_abstract_colorspace.h" +#include "kis_u8_base_colorspace.h" +#include "kis_gray_colorspace.h" +#include "kis_integer_maths.h" + +#define downscale(quantum) (quantum) //((unsigned char) ((quantum)/257UL)) +#define upscale(value) (value) // ((TQ_UINT8) (257UL*(value))) + +namespace { + const TQ_INT32 MAX_CHANNEL_GRAYSCALE = 1; + const TQ_INT32 MAX_CHANNEL_GRAYSCALEA = 2; +} + +KisGrayColorSpace::KisGrayColorSpace(KisColorSpaceFactoryRegistry * parent, KisProfile *p) : + KisU8BaseColorSpace(KisID("GRAYA", i18n("Grayscale")), TYPE_GRAYA_8, icSigGrayData, parent, p) +{ + m_channels.push_back(new KisChannelInfo(i18n("Gray"), i18n("G"), 0, KisChannelInfo::COLOR, KisChannelInfo::UINT8)); + m_channels.push_back(new KisChannelInfo(i18n("Alpha"), i18n("A"), 1, KisChannelInfo::ALPHA, KisChannelInfo::UINT8)); + + m_alphaPos = PIXEL_GRAY_ALPHA; + + init(); +} + + +KisGrayColorSpace::~KisGrayColorSpace() +{ +} + +void KisGrayColorSpace::setPixel(TQ_UINT8 *pixel, TQ_UINT8 gray, TQ_UINT8 alpha) const +{ + pixel[PIXEL_GRAY] = gray; + pixel[PIXEL_GRAY_ALPHA] = alpha; +} + +void KisGrayColorSpace::getPixel(const TQ_UINT8 *pixel, TQ_UINT8 *gray, TQ_UINT8 *alpha) const +{ + *gray = pixel[PIXEL_GRAY]; + *alpha = pixel[PIXEL_GRAY_ALPHA]; +} + +void KisGrayColorSpace::getAlpha(const TQ_UINT8 *pixel, TQ_UINT8 *alpha) const +{ + *alpha = pixel[PIXEL_GRAY_ALPHA]; +} + +void KisGrayColorSpace::setAlpha(TQ_UINT8 *pixels, TQ_UINT8 alpha, TQ_INT32 nPixels) const +{ + while (nPixels > 0) { + pixels[PIXEL_GRAY_ALPHA] = alpha; + --nPixels; + pixels += MAX_CHANNEL_GRAYSCALEA; + } +} + +void KisGrayColorSpace::mixColors(const TQ_UINT8 **colors, const TQ_UINT8 *weights, TQ_UINT32 nColors, TQ_UINT8 *dst) const +{ + TQ_UINT32 totalGray = 0, newAlpha = 0; + + while (nColors--) + { + TQ_UINT32 alpha = (*colors)[PIXEL_GRAY_ALPHA]; + TQ_UINT32 alphaTimesWeight = UINT8_MULT(alpha, *weights); + + totalGray += (*colors)[PIXEL_GRAY] * alphaTimesWeight; + newAlpha += alphaTimesWeight; + + weights++; + colors++; + } + + Q_ASSERT(newAlpha <= 255); + + dst[PIXEL_GRAY_ALPHA] = newAlpha; + + if (newAlpha > 0) { + totalGray = UINT8_DIVIDE(totalGray, newAlpha); + } + + // Divide by 255. + totalGray += 0x80; + TQ_UINT32 dstGray = ((totalGray >> 8) + totalGray) >> 8; + Q_ASSERT(dstGray <= 255); + dst[PIXEL_GRAY] = dstGray; +} + +void KisGrayColorSpace::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 totalGray = 0, totalAlpha = 0; + + while (nColors--) + { + TQ_INT32 weight = *kernelValues; + + if (weight != 0) { + totalGray += (*colors)[PIXEL_GRAY] * weight; + totalAlpha += (*colors)[PIXEL_GRAY_ALPHA] * weight; + } + colors++; + kernelValues++; + } + + + if (channelFlags & KisChannelInfo::FLAG_COLOR) { + dst[PIXEL_GRAY] = CLAMP((totalGray / factor) + offset, 0, TQ_UINT8_MAX); + } + if (channelFlags & KisChannelInfo::FLAG_ALPHA) { + dst[PIXEL_GRAY_ALPHA] = CLAMP((totalAlpha/ factor) + offset, 0, TQ_UINT8_MAX); + } + +} + + +void KisGrayColorSpace::invertColor(TQ_UINT8 * src, TQ_INT32 nPixels) +{ + TQ_UINT32 psize = pixelSize(); + + while (nPixels--) + { + src[PIXEL_GRAY] = TQ_UINT8_MAX - src[PIXEL_GRAY]; + src += psize; + } +} + +void KisGrayColorSpace::darken(const TQ_UINT8 * src, TQ_UINT8 * dst, TQ_INT32 shade, bool compensate, double compensation, TQ_INT32 nPixels) const +{ + TQ_UINT32 pSize = pixelSize(); + + while (nPixels--) { + if (compensate) { + dst[PIXEL_GRAY] = (TQ_INT8) TQMIN(255,((src[PIXEL_GRAY] * shade) / (compensation * 255))); + } + else { + dst[PIXEL_GRAY] = (TQ_INT8) TQMIN(255, (src[PIXEL_GRAY] * shade / 255)); + } + dst += pSize; + src += pSize; + } +} + +TQ_UINT8 KisGrayColorSpace::intensity8(const TQ_UINT8 * src) const +{ + return src[PIXEL_GRAY]; +} + +TQValueVector<KisChannelInfo *> KisGrayColorSpace::channels() const +{ + return m_channels; +} + +TQ_UINT32 KisGrayColorSpace::nChannels() const +{ + return MAX_CHANNEL_GRAYSCALEA; +} + +TQ_UINT32 KisGrayColorSpace::nColorChannels() const +{ + return MAX_CHANNEL_GRAYSCALE; +} + +TQ_UINT32 KisGrayColorSpace::pixelSize() const +{ + return MAX_CHANNEL_GRAYSCALEA; +} + +void KisGrayColorSpace::bitBlt(TQ_UINT8 *dst, + TQ_INT32 dstRowStride, + const TQ_UINT8 *src, + TQ_INT32 srcRowStride, + const TQ_UINT8 *mask, + TQ_INT32 maskRowStride, + TQ_UINT8 opacity, + TQ_INT32 rows, + TQ_INT32 cols, + const KisCompositeOp& op) +{ + switch (op.op()) { + case COMPOSITE_OVER: + compositeOver(dst, dstRowStride, src, srcRowStride, mask, maskRowStride, 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_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_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_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_ERASE: + compositeErase(dst, dstRowStride, src, srcRowStride, mask, maskRowStride, rows, cols, opacity); + break; + case COMPOSITE_COPY: + compositeCopy(dst, dstRowStride, src, srcRowStride, mask, maskRowStride, rows, cols, opacity); + break; + case COMPOSITE_CLEAR: { + TQ_UINT8 *d; + TQ_INT32 linesize; + + linesize = MAX_CHANNEL_GRAYSCALEA*sizeof(TQ_UINT8) * cols; + d = dst; + while (rows-- > 0) { + memset(d, 0, linesize); + d += dstRowStride; + } + } + break; + case COMPOSITE_ALPHA_DARKEN: + compositeAlphaDarken(dst, dstRowStride, src, srcRowStride, mask, maskRowStride, rows, cols, opacity); + break; + + default: + break; + } +} + +KisCompositeOpList KisGrayColorSpace::userVisiblecompositeOps() const +{ + KisCompositeOpList list; + + list.append(KisCompositeOp(COMPOSITE_OVER)); + list.append(KisCompositeOp(COMPOSITE_MULT)); + list.append(KisCompositeOp(COMPOSITE_BURN)); + list.append(KisCompositeOp(COMPOSITE_DODGE)); + list.append(KisCompositeOp(COMPOSITE_DIVIDE)); + list.append(KisCompositeOp(COMPOSITE_SCREEN)); + list.append(KisCompositeOp(COMPOSITE_OVERLAY)); + list.append(KisCompositeOp(COMPOSITE_DARKEN)); + list.append(KisCompositeOp(COMPOSITE_LIGHTEN)); + + return list; +} + +void KisGrayColorSpace::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_UINT8 opacity) +{ + while (rows > 0) { + + const TQ_UINT8 *src = srcRowStart; + TQ_UINT8 *dst = dstRowStart; + TQ_INT32 columns = numColumns; + const TQ_UINT8 *mask = maskRowStart; + + while (columns > 0) { + + TQ_UINT8 srcAlpha = src[PIXEL_GRAY_ALPHA]; + + // apply the alphamask + if(mask != 0) + { + if(*mask != OPACITY_OPAQUE) + srcAlpha = UINT8_MULT(srcAlpha, *mask); + mask++; + } + + if (srcAlpha != OPACITY_TRANSPARENT) { + + if (opacity != OPACITY_OPAQUE) { + srcAlpha = UINT8_MULT(srcAlpha, opacity); + } + + if (srcAlpha == OPACITY_OPAQUE) { + memcpy(dst, src, MAX_CHANNEL_GRAYSCALEA * sizeof(TQ_UINT8)); + } else { + TQ_UINT8 dstAlpha = dst[PIXEL_GRAY_ALPHA]; + + TQ_UINT8 srcBlend; + + if (dstAlpha == OPACITY_OPAQUE) { + srcBlend = srcAlpha; + } else { + TQ_UINT8 newAlpha = dstAlpha + UINT8_MULT(OPACITY_OPAQUE - dstAlpha, srcAlpha); + dst[PIXEL_GRAY_ALPHA] = newAlpha; + + if (newAlpha != 0) { + srcBlend = UINT8_DIVIDE(srcAlpha, newAlpha); + } else { + srcBlend = srcAlpha; + } + } + + if (srcBlend == OPACITY_OPAQUE) { + memcpy(dst, src, MAX_CHANNEL_GRAYSCALE * sizeof(TQ_UINT8)); + } else { + dst[PIXEL_GRAY] = UINT8_BLEND(src[PIXEL_GRAY], dst[PIXEL_GRAY], srcBlend); + } + } + } + + columns--; + src += MAX_CHANNEL_GRAYSCALEA; + dst += MAX_CHANNEL_GRAYSCALEA; + } + + rows--; + srcRowStart += srcRowStride; + dstRowStart += dstRowStride; + if(maskRowStart) + maskRowStart += maskRowStride; + } +} + +void KisGrayColorSpace::compositeMultiply(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_UINT8 opacity) +{ + while (rows > 0) { + + const TQ_UINT8 *src = srcRowStart; + TQ_UINT8 *dst = dstRowStart; + TQ_INT32 columns = numColumns; + const TQ_UINT8 *mask = maskRowStart; + + while (columns > 0) { + + TQ_UINT8 srcAlpha = src[PIXEL_GRAY_ALPHA]; + TQ_UINT8 dstAlpha = dst[PIXEL_GRAY_ALPHA]; + + srcAlpha = TQMIN(srcAlpha, dstAlpha); + + // apply the alphamask + if(mask != 0) + { + if(*mask != OPACITY_OPAQUE) + srcAlpha = UINT8_MULT(srcAlpha, *mask); + mask++; + } + + if (srcAlpha != OPACITY_TRANSPARENT) { + + if (opacity != OPACITY_OPAQUE) { + srcAlpha = UINT8_MULT(src[PIXEL_GRAY_ALPHA], opacity); + } + + TQ_UINT8 srcBlend; + + if (dstAlpha == OPACITY_OPAQUE) { + srcBlend = srcAlpha; + } else { + TQ_UINT8 newAlpha = dstAlpha + UINT8_MULT(OPACITY_OPAQUE - dstAlpha, srcAlpha); + dst[PIXEL_GRAY_ALPHA] = newAlpha; + + if (newAlpha != 0) { + srcBlend = UINT8_DIVIDE(srcAlpha, newAlpha); + } else { + srcBlend = srcAlpha; + } + } + + TQ_UINT8 srcColor = src[PIXEL_GRAY]; + TQ_UINT8 dstColor = dst[PIXEL_GRAY]; + + srcColor = UINT8_MULT(srcColor, dstColor); + + dst[PIXEL_GRAY] = UINT8_BLEND(srcColor, dstColor, srcBlend); + } + + columns--; + src += MAX_CHANNEL_GRAYSCALEA; + dst += MAX_CHANNEL_GRAYSCALEA; + } + + rows--; + srcRowStart += srcRowStride; + dstRowStart += dstRowStride; + if(maskRowStart) + maskRowStart += maskRowStride; + } +} + +void KisGrayColorSpace::compositeDivide(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_UINT8 opacity) +{ + while (rows > 0) { + + const TQ_UINT8 *src = srcRowStart; + TQ_UINT8 *dst = dstRowStart; + TQ_INT32 columns = numColumns; + const TQ_UINT8 *mask = maskRowStart; + + while (columns > 0) { + + TQ_UINT8 srcAlpha = src[PIXEL_GRAY_ALPHA]; + TQ_UINT8 dstAlpha = dst[PIXEL_GRAY_ALPHA]; + + srcAlpha = TQMIN(srcAlpha, dstAlpha); + + // apply the alphamask + if(mask != 0) + { + if(*mask != OPACITY_OPAQUE) + srcAlpha = UINT8_MULT(srcAlpha, *mask); + mask++; + } + + if (srcAlpha != OPACITY_TRANSPARENT) { + + if (opacity != OPACITY_OPAQUE) { + srcAlpha = UINT8_MULT(src[PIXEL_GRAY_ALPHA], opacity); + } + + TQ_UINT8 srcBlend; + + if (dstAlpha == OPACITY_OPAQUE) { + srcBlend = srcAlpha; + } else { + TQ_UINT8 newAlpha = dstAlpha + UINT8_MULT(OPACITY_OPAQUE - dstAlpha, srcAlpha); + dst[PIXEL_GRAY_ALPHA] = newAlpha; + + if (newAlpha != 0) { + srcBlend = UINT8_DIVIDE(srcAlpha, newAlpha); + } else { + srcBlend = srcAlpha; + } + } + + for (int channel = 0; channel < MAX_CHANNEL_GRAYSCALE; channel++) { + + TQ_UINT8 srcColor = src[channel]; + TQ_UINT8 dstColor = dst[channel]; + + srcColor = TQMIN((dstColor * (UINT8_MAX + 1)) / (1 + srcColor), UINT8_MAX); + + TQ_UINT8 newColor = UINT8_BLEND(srcColor, dstColor, srcBlend); + + dst[channel] = newColor; + } + } + + columns--; + src += MAX_CHANNEL_GRAYSCALEA; + dst += MAX_CHANNEL_GRAYSCALEA; + } + + rows--; + srcRowStart += srcRowStride; + dstRowStart += dstRowStride; + if(maskRowStart) + maskRowStart += maskRowStride; + } +} + +void KisGrayColorSpace::compositeScreen(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_UINT8 opacity) +{ + while (rows > 0) { + + const TQ_UINT8 *src = srcRowStart; + TQ_UINT8 *dst = dstRowStart; + TQ_INT32 columns = numColumns; + const TQ_UINT8 *mask = maskRowStart; + + while (columns > 0) { + + TQ_UINT8 srcAlpha = src[PIXEL_GRAY_ALPHA]; + TQ_UINT8 dstAlpha = dst[PIXEL_GRAY_ALPHA]; + + srcAlpha = TQMIN(srcAlpha, dstAlpha); + + // apply the alphamask + if(mask != 0) + { + if(*mask != OPACITY_OPAQUE) + srcAlpha = UINT8_MULT(srcAlpha, *mask); + mask++; + } + + if (srcAlpha != OPACITY_TRANSPARENT) { + + if (opacity != OPACITY_OPAQUE) { + srcAlpha = UINT8_MULT(src[PIXEL_GRAY_ALPHA], opacity); + } + + TQ_UINT8 srcBlend; + + if (dstAlpha == OPACITY_OPAQUE) { + srcBlend = srcAlpha; + } else { + TQ_UINT8 newAlpha = dstAlpha + UINT8_MULT(OPACITY_OPAQUE - dstAlpha, srcAlpha); + dst[PIXEL_GRAY_ALPHA] = newAlpha; + + if (newAlpha != 0) { + srcBlend = UINT8_DIVIDE(srcAlpha, newAlpha); + } else { + srcBlend = srcAlpha; + } + } + + for (int channel = 0; channel < MAX_CHANNEL_GRAYSCALE; channel++) { + + TQ_UINT8 srcColor = src[channel]; + TQ_UINT8 dstColor = dst[channel]; + + srcColor = UINT8_MAX - UINT8_MULT(UINT8_MAX - dstColor, UINT8_MAX - srcColor); + + TQ_UINT8 newColor = UINT8_BLEND(srcColor, dstColor, srcBlend); + + dst[channel] = newColor; + } + } + + columns--; + src += MAX_CHANNEL_GRAYSCALEA; + dst += MAX_CHANNEL_GRAYSCALEA; + } + + rows--; + srcRowStart += srcRowStride; + dstRowStart += dstRowStride; + if(maskRowStart) + maskRowStart += maskRowStride; + } +} + +void KisGrayColorSpace::compositeOverlay(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_UINT8 opacity) +{ + while (rows > 0) { + + const TQ_UINT8 *src = srcRowStart; + TQ_UINT8 *dst = dstRowStart; + TQ_INT32 columns = numColumns; + const TQ_UINT8 *mask = maskRowStart; + + while (columns > 0) { + + TQ_UINT8 srcAlpha = src[PIXEL_GRAY_ALPHA]; + TQ_UINT8 dstAlpha = dst[PIXEL_GRAY_ALPHA]; + + srcAlpha = TQMIN(srcAlpha, dstAlpha); + + // apply the alphamask + if(mask != 0) + { + if(*mask != OPACITY_OPAQUE) + srcAlpha = UINT8_MULT(srcAlpha, *mask); + mask++; + } + + if (srcAlpha != OPACITY_TRANSPARENT) { + + if (opacity != OPACITY_OPAQUE) { + srcAlpha = UINT8_MULT(src[PIXEL_GRAY_ALPHA], opacity); + } + + TQ_UINT8 srcBlend; + + if (dstAlpha == OPACITY_OPAQUE) { + srcBlend = srcAlpha; + } else { + TQ_UINT8 newAlpha = dstAlpha + UINT8_MULT(OPACITY_OPAQUE - dstAlpha, srcAlpha); + dst[PIXEL_GRAY_ALPHA] = newAlpha; + + if (newAlpha != 0) { + srcBlend = UINT8_DIVIDE(srcAlpha, newAlpha); + } else { + srcBlend = srcAlpha; + } + } + + for (int channel = 0; channel < MAX_CHANNEL_GRAYSCALE; channel++) { + + TQ_UINT8 srcColor = src[channel]; + TQ_UINT8 dstColor = dst[channel]; + + srcColor = UINT8_MULT(dstColor, dstColor + UINT8_MULT(2 * srcColor, UINT8_MAX - dstColor)); + + TQ_UINT8 newColor = UINT8_BLEND(srcColor, dstColor, srcBlend); + + dst[channel] = newColor; + } + } + + columns--; + src += MAX_CHANNEL_GRAYSCALEA; + dst += MAX_CHANNEL_GRAYSCALEA; + } + + rows--; + srcRowStart += srcRowStride; + dstRowStart += dstRowStride; + if(maskRowStart) + maskRowStart += maskRowStride; + } +} + +void KisGrayColorSpace::compositeDodge(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_UINT8 opacity) +{ + while (rows > 0) { + + const TQ_UINT8 *src = srcRowStart; + TQ_UINT8 *dst = dstRowStart; + TQ_INT32 columns = numColumns; + const TQ_UINT8 *mask = maskRowStart; + + while (columns > 0) { + + TQ_UINT8 srcAlpha = src[PIXEL_GRAY_ALPHA]; + TQ_UINT8 dstAlpha = dst[PIXEL_GRAY_ALPHA]; + + srcAlpha = TQMIN(srcAlpha, dstAlpha); + + // apply the alphamask + if(mask != 0) + { + if(*mask != OPACITY_OPAQUE) + srcAlpha = UINT8_MULT(srcAlpha, *mask); + mask++; + } + + if (srcAlpha != OPACITY_TRANSPARENT) { + + if (opacity != OPACITY_OPAQUE) { + srcAlpha = UINT8_MULT(src[PIXEL_GRAY_ALPHA], opacity); + } + + TQ_UINT8 srcBlend; + + if (dstAlpha == OPACITY_OPAQUE) { + srcBlend = srcAlpha; + } else { + TQ_UINT8 newAlpha = dstAlpha + UINT8_MULT(OPACITY_OPAQUE - dstAlpha, srcAlpha); + dst[PIXEL_GRAY_ALPHA] = newAlpha; + + if (newAlpha != 0) { + srcBlend = UINT8_DIVIDE(srcAlpha, newAlpha); + } else { + srcBlend = srcAlpha; + } + } + + for (int channel = 0; channel < MAX_CHANNEL_GRAYSCALE; channel++) { + + TQ_UINT8 srcColor = src[channel]; + TQ_UINT8 dstColor = dst[channel]; + + srcColor = TQMIN((dstColor * (UINT8_MAX + 1)) / (UINT8_MAX + 1 - srcColor), UINT8_MAX); + + TQ_UINT8 newColor = UINT8_BLEND(srcColor, dstColor, srcBlend); + + dst[channel] = newColor; + } + } + + columns--; + src += MAX_CHANNEL_GRAYSCALEA; + dst += MAX_CHANNEL_GRAYSCALEA; + } + + rows--; + srcRowStart += srcRowStride; + dstRowStart += dstRowStride; + if(maskRowStart) + maskRowStart += maskRowStride; + } +} + +void KisGrayColorSpace::compositeBurn(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_UINT8 opacity) +{ + while (rows > 0) { + + const TQ_UINT8 *src = srcRowStart; + TQ_UINT8 *dst = dstRowStart; + TQ_INT32 columns = numColumns; + const TQ_UINT8 *mask = maskRowStart; + + while (columns > 0) { + + TQ_UINT8 srcAlpha = src[PIXEL_GRAY_ALPHA]; + TQ_UINT8 dstAlpha = dst[PIXEL_GRAY_ALPHA]; + + srcAlpha = TQMIN(srcAlpha, dstAlpha); + + // apply the alphamask + if(mask != 0) + { + if(*mask != OPACITY_OPAQUE) + srcAlpha = UINT8_MULT(srcAlpha, *mask); + mask++; + } + + if (srcAlpha != OPACITY_TRANSPARENT) { + + if (opacity != OPACITY_OPAQUE) { + srcAlpha = UINT8_MULT(src[PIXEL_GRAY_ALPHA], opacity); + } + + TQ_UINT8 srcBlend; + + if (dstAlpha == OPACITY_OPAQUE) { + srcBlend = srcAlpha; + } else { + TQ_UINT8 newAlpha = dstAlpha + UINT8_MULT(OPACITY_OPAQUE - dstAlpha, srcAlpha); + dst[PIXEL_GRAY_ALPHA] = newAlpha; + + if (newAlpha != 0) { + srcBlend = UINT8_DIVIDE(srcAlpha, newAlpha); + } else { + srcBlend = srcAlpha; + } + } + + for (int channel = 0; channel < MAX_CHANNEL_GRAYSCALE; channel++) { + + TQ_UINT8 srcColor = src[channel]; + TQ_UINT8 dstColor = dst[channel]; + + srcColor = kMin(((UINT8_MAX - dstColor) * (UINT8_MAX + 1u)) / (srcColor + 1u), (unsigned)UINT8_MAX); + srcColor = kClamp((unsigned)UINT8_MAX - srcColor, 0u, (unsigned)UINT8_MAX); + + TQ_UINT8 newColor = UINT8_BLEND(srcColor, dstColor, srcBlend); + + dst[channel] = newColor; + } + } + + columns--; + src += MAX_CHANNEL_GRAYSCALEA; + dst += MAX_CHANNEL_GRAYSCALEA; + } + + rows--; + srcRowStart += srcRowStride; + dstRowStart += dstRowStride; + if(maskRowStart) + maskRowStart += maskRowStride; + } +} + +void KisGrayColorSpace::compositeDarken(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_UINT8 opacity) +{ + while (rows > 0) { + + const TQ_UINT8 *src = srcRowStart; + TQ_UINT8 *dst = dstRowStart; + TQ_INT32 columns = numColumns; + const TQ_UINT8 *mask = maskRowStart; + + while (columns > 0) { + + TQ_UINT8 srcAlpha = src[PIXEL_GRAY_ALPHA]; + TQ_UINT8 dstAlpha = dst[PIXEL_GRAY_ALPHA]; + + srcAlpha = TQMIN(srcAlpha, dstAlpha); + + // apply the alphamask + if(mask != 0) + { + if(*mask != OPACITY_OPAQUE) + srcAlpha = UINT8_MULT(srcAlpha, *mask); + mask++; + } + + if (srcAlpha != OPACITY_TRANSPARENT) { + + if (opacity != OPACITY_OPAQUE) { + srcAlpha = UINT8_MULT(src[PIXEL_GRAY_ALPHA], opacity); + } + + TQ_UINT8 srcBlend; + + if (dstAlpha == OPACITY_OPAQUE) { + srcBlend = srcAlpha; + } else { + TQ_UINT8 newAlpha = dstAlpha + UINT8_MULT(OPACITY_OPAQUE - dstAlpha, srcAlpha); + dst[PIXEL_GRAY_ALPHA] = newAlpha; + + if (newAlpha != 0) { + srcBlend = UINT8_DIVIDE(srcAlpha, newAlpha); + } else { + srcBlend = srcAlpha; + } + } + + for (int channel = 0; channel < MAX_CHANNEL_GRAYSCALE; channel++) { + + TQ_UINT8 srcColor = src[channel]; + TQ_UINT8 dstColor = dst[channel]; + + srcColor = TQMIN(srcColor, dstColor); + + TQ_UINT8 newColor = UINT8_BLEND(srcColor, dstColor, srcBlend); + + dst[channel] = newColor; + } + } + + columns--; + src += MAX_CHANNEL_GRAYSCALEA; + dst += MAX_CHANNEL_GRAYSCALEA; + } + + rows--; + srcRowStart += srcRowStride; + dstRowStart += dstRowStride; + if(maskRowStart) + maskRowStart += maskRowStride; + } +} + +void KisGrayColorSpace::compositeLighten(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_UINT8 opacity) +{ + while (rows > 0) { + + const TQ_UINT8 *src = srcRowStart; + TQ_UINT8 *dst = dstRowStart; + TQ_INT32 columns = numColumns; + const TQ_UINT8 *mask = maskRowStart; + + while (columns > 0) { + + TQ_UINT8 srcAlpha = src[PIXEL_GRAY_ALPHA]; + TQ_UINT8 dstAlpha = dst[PIXEL_GRAY_ALPHA]; + + srcAlpha = TQMIN(srcAlpha, dstAlpha); + + // apply the alphamask + if(mask != 0) + { + if(*mask != OPACITY_OPAQUE) + srcAlpha = UINT8_MULT(srcAlpha, *mask); + mask++; + } + + if (srcAlpha != OPACITY_TRANSPARENT) { + + if (opacity != OPACITY_OPAQUE) { + srcAlpha = UINT8_MULT(src[PIXEL_GRAY_ALPHA], opacity); + } + + TQ_UINT8 srcBlend; + + if (dstAlpha == OPACITY_OPAQUE) { + srcBlend = srcAlpha; + } else { + TQ_UINT8 newAlpha = dstAlpha + UINT8_MULT(OPACITY_OPAQUE - dstAlpha, srcAlpha); + dst[PIXEL_GRAY_ALPHA] = newAlpha; + + if (newAlpha != 0) { + srcBlend = UINT8_DIVIDE(srcAlpha, newAlpha); + } else { + srcBlend = srcAlpha; + } + } + + for (int channel = 0; channel < MAX_CHANNEL_GRAYSCALE; channel++) { + + TQ_UINT8 srcColor = src[channel]; + TQ_UINT8 dstColor = dst[channel]; + + srcColor = TQMAX(srcColor, dstColor); + + TQ_UINT8 newColor = UINT8_BLEND(srcColor, dstColor, srcBlend); + + dst[channel] = newColor; + } + } + + columns--; + src += MAX_CHANNEL_GRAYSCALEA; + dst += MAX_CHANNEL_GRAYSCALEA; + } + + rows--; + srcRowStart += srcRowStride; + dstRowStart += dstRowStride; + if(maskRowStart) + maskRowStart += maskRowStride; + } +} + +void KisGrayColorSpace::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_UINT8 /*opacity*/) +{ + TQ_INT32 i; + TQ_UINT8 srcAlpha; + + while (rows-- > 0) + { + const TQ_UINT8 *s = src; + TQ_UINT8 *d = dst; + const TQ_UINT8 *mask = srcAlphaMask; + + for (i = cols; i > 0; i--, s+=MAX_CHANNEL_GRAYSCALEA, d+=MAX_CHANNEL_GRAYSCALEA) + { + srcAlpha = s[PIXEL_GRAY_ALPHA]; + // apply the alphamask + if(mask != 0) + { + if(*mask != OPACITY_OPAQUE) + srcAlpha = UINT8_BLEND(srcAlpha, OPACITY_OPAQUE, *mask); + mask++; + } + d[PIXEL_GRAY_ALPHA] = UINT8_MULT(srcAlpha, d[PIXEL_GRAY_ALPHA]); + } + + dst += dstRowSize; + if(srcAlphaMask) + srcAlphaMask += maskRowStride; + src += srcRowSize; + } +} + +void KisGrayColorSpace::compositeAlphaDarken(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_UINT8 opacity) +{ + while (rows > 0) { + + const TQ_UINT8 *src = srcRowStart; + TQ_UINT8 *dst = dstRowStart; + const TQ_UINT8 *mask = maskRowStart; + TQ_INT32 columns = numColumns; + + while (columns > 0) { + + TQ_UINT8 srcAlpha = src[PIXEL_GRAY_ALPHA]; + TQ_UINT8 dstAlpha = dst[PIXEL_GRAY_ALPHA]; + + // apply the alphamask + if(mask != 0) + { + if(*mask != OPACITY_OPAQUE) + srcAlpha = UINT8_MULT(srcAlpha, *mask); + mask++; + } + + if (opacity != OPACITY_OPAQUE) { + srcAlpha = UINT8_MULT(srcAlpha, opacity); + } + + if (srcAlpha != OPACITY_TRANSPARENT && srcAlpha >= dstAlpha) { + dst[PIXEL_GRAY_ALPHA] = srcAlpha; + memcpy(dst, src, MAX_CHANNEL_GRAYSCALE * sizeof(TQ_UINT8)); + } + + columns--; + src += MAX_CHANNEL_GRAYSCALEA; + dst += MAX_CHANNEL_GRAYSCALEA; + } + + rows--; + srcRowStart += srcRowStride; + dstRowStart += dstRowStride; + if(maskRowStart) + maskRowStart += maskRowStride; + } +} |