diff options
Diffstat (limited to 'chalk/colorspaces/lms_f32/kis_lms_f32_colorspace.cpp')
| -rw-r--r-- | chalk/colorspaces/lms_f32/kis_lms_f32_colorspace.cpp | 385 |
1 files changed, 385 insertions, 0 deletions
diff --git a/chalk/colorspaces/lms_f32/kis_lms_f32_colorspace.cpp b/chalk/colorspaces/lms_f32/kis_lms_f32_colorspace.cpp new file mode 100644 index 000000000..67ad17d0e --- /dev/null +++ b/chalk/colorspaces/lms_f32/kis_lms_f32_colorspace.cpp @@ -0,0 +1,385 @@ +/* + * 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 Cyrille Berger <cberger@cberger.net> + * + * 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_lms_f32_colorspace.h" +#include "kis_color_conversions.h" + +namespace { + const TQ_INT32 MAX_CHANNEL_LMS = 3; + const TQ_INT32 MAX_CHANNEL_LMSA = 4; +} + +#include "kis_integer_maths.h" + +#define FLOAT_MAX 1.0f //temp + +#define EPSILON 1e-6 + +// FIXME: lcms doesn't support 32-bit float +#define F32_LCMS_TYPE TYPE_BGRA_16 + +// disable the lcms handling by setting profile=0 +KisLmsF32ColorSpace::KisLmsF32ColorSpace(KisColorSpaceFactoryRegistry * parent, KisProfile */*p*/) : + KisF32BaseColorSpace(KisID("LMSAF32", i18n("LMS (32-bit float/channel)")), F32_LCMS_TYPE, icSig3colorData, parent, 0) +{ + m_channels.push_back(new KisChannelInfo(i18n("Long"), i18n("L"), PIXEL_LONGWAVE * sizeof(float), KisChannelInfo::COLOR, KisChannelInfo::FLOAT32, sizeof(float))); + m_channels.push_back(new KisChannelInfo(i18n("Middle"), i18n("M"), PIXEL_MIDDLEWAVE * sizeof(float), KisChannelInfo::COLOR, KisChannelInfo::FLOAT32, sizeof(float))); + m_channels.push_back(new KisChannelInfo(i18n("Short"), i18n("S"), PIXEL_SHORTWAVE * sizeof(float), KisChannelInfo::COLOR, KisChannelInfo::FLOAT32, sizeof(float))); + m_channels.push_back(new KisChannelInfo(i18n("Alpha"), i18n("A"), PIXEL_ALPHA * sizeof(float), KisChannelInfo::ALPHA, KisChannelInfo::FLOAT32, sizeof(float))); + + m_alphaPos = PIXEL_ALPHA * sizeof(float); +} + +KisLmsF32ColorSpace::~KisLmsF32ColorSpace() +{ +} + +void KisLmsF32ColorSpace::setPixel(TQ_UINT8 *dst, float longWave, float middleWave, float shortWave, float alpha) const +{ + Pixel *dstPixel = reinterpret_cast<Pixel *>(dst); + + dstPixel->longWave = longWave; + dstPixel->middleWave = middleWave; + dstPixel->shortWave = shortWave; + dstPixel->alpha = alpha; +} + +void KisLmsF32ColorSpace::getPixel(const TQ_UINT8 *src, float *longWave, float *middleWave, float *shortWave, float *alpha) const +{ + const Pixel *srcPixel = reinterpret_cast<const Pixel *>(src); + + *longWave = srcPixel->longWave; + *middleWave = srcPixel->middleWave; + *shortWave = srcPixel->shortWave; + *alpha = srcPixel->alpha; +} + +void KisLmsF32ColorSpace::fromTQColor(const TQColor& c, TQ_UINT8 *dstU8, KisProfile * /*profile*/) +{ + Pixel *dst = reinterpret_cast<Pixel *>(dstU8); + + dst->longWave = computeLong(c.red(),c.green(),c.blue()); + dst->middleWave = computeMiddle(c.red(),c.green(),c.blue()); + dst->shortWave = computeShort(c.red(),c.green(),c.blue()); +} + +void KisLmsF32ColorSpace::fromTQColor(const TQColor& c, TQ_UINT8 opacity, TQ_UINT8 *dstU8, KisProfile * /*profile*/) +{ + Pixel *dst = reinterpret_cast<Pixel *>(dstU8); + + dst->longWave = computeLong(c.red(),c.green(),c.blue()); + dst->middleWave = computeMiddle(c.red(),c.green(),c.blue()); + dst->shortWave = computeShort(c.red(),c.green(),c.blue()); + dst->alpha = UINT8_TO_FLOAT(opacity); +} + +void KisLmsF32ColorSpace::toTQColor(const TQ_UINT8 *srcU8, TQColor *c, KisProfile * /*profile*/) +{ + const Pixel *src = reinterpret_cast<const Pixel *>(srcU8); + + c->setRgb(computeRed(src->longWave,src->middleWave,src->shortWave), computeGreen(src->longWave,src->middleWave,src->shortWave), computeBlue(src->longWave,src->middleWave,src->shortWave)); +} + +void KisLmsF32ColorSpace::toTQColor(const TQ_UINT8 *srcU8, TQColor *c, TQ_UINT8 *opacity, KisProfile * /*profile*/) +{ + const Pixel *src = reinterpret_cast<const Pixel *>(srcU8); + + c->setRgb(computeRed(src->longWave,src->middleWave,src->shortWave), computeGreen(src->longWave,src->middleWave,src->shortWave), computeBlue(src->longWave,src->middleWave,src->shortWave)); + *opacity = FLOAT_TO_UINT8(src->alpha); +} + +TQ_UINT8 KisLmsF32ColorSpace::difference(const TQ_UINT8 *src1U8, const TQ_UINT8 *src2U8) +{ + const Pixel *src1 = reinterpret_cast<const Pixel *>(src1U8); + const Pixel *src2 = reinterpret_cast<const Pixel *>(src2U8); + + return FLOAT_TO_UINT8(TQMAX(TQABS(src2->longWave - src1->longWave), + TQMAX(TQABS(src2->middleWave - src1->middleWave), + TQABS(src2->shortWave - src1->shortWave)))); +} + +void KisLmsF32ColorSpace::mixColors(const TQ_UINT8 **colors, const TQ_UINT8 *weights, TQ_UINT32 nColors, TQ_UINT8 *dst) const +{ + float totalLong = 0, totalMiddle = 0, totalShort = 0, newAlpha = 0; + + while (nColors--) + { + const Pixel *pixel = reinterpret_cast<const Pixel *>(*colors); + + float alpha = pixel->alpha; + float alphaTimesWeight = alpha * UINT8_TO_FLOAT(*weights); + + totalLong += pixel->longWave * alphaTimesWeight; + totalMiddle += pixel->middleWave * alphaTimesWeight; + totalShort += pixel->shortWave * alphaTimesWeight; + newAlpha += alphaTimesWeight; + + weights++; + colors++; + } + + Q_ASSERT(newAlpha <= F32_OPACITY_OPAQUE); + + Pixel *dstPixel = reinterpret_cast<Pixel *>(dst); + + dstPixel->alpha = newAlpha; + + if (newAlpha > EPSILON) { + totalLong = totalLong / newAlpha; + totalMiddle = totalMiddle / newAlpha; + totalShort = totalShort / newAlpha; + } + + dstPixel->longWave = totalLong; + dstPixel->middleWave = totalMiddle; + dstPixel->shortWave = totalShort; +} + +TQValueVector<KisChannelInfo *> KisLmsF32ColorSpace::channels() const +{ + return m_channels; +} + +TQ_UINT32 KisLmsF32ColorSpace::nChannels() const +{ + return MAX_CHANNEL_LMSA; +} + +TQ_UINT32 KisLmsF32ColorSpace::nColorChannels() const +{ + return MAX_CHANNEL_LMS; +} + +TQ_UINT32 KisLmsF32ColorSpace::pixelSize() const +{ + return MAX_CHANNEL_LMSA * sizeof(float); +} + +TQImage KisLmsF32ColorSpace::convertToTQImage(const TQ_UINT8 *dataU8, TQ_INT32 width, TQ_INT32 height, + KisProfile * /*dstProfile*/, + TQ_INT32 /*renderingIntent*/, float /*exposure*/) + +{ + const float *data = reinterpret_cast<const float *>(dataU8); + + TQImage img = TQImage(width, height, 32, 0, TQImage::LittleEndian); + img.setAlphaBuffer(true); + + TQ_INT32 i = 0; + uchar *j = img.bits(); + + while ( i < width * height * MAX_CHANNEL_LMSA) { + double l = *( data + i + PIXEL_LONGWAVE ); + double m = *( data + i + PIXEL_MIDDLEWAVE ); + double s = *( data + i + PIXEL_SHORTWAVE ); + *( j + 3) = FLOAT_TO_UINT8(*( data + i + PIXEL_ALPHA )); + *( j + 2 ) = computeRed(l,m,s); + *( j + 1 ) = computeGreen(l,m,s); + *( j + 0 ) = computeBlue(l,m,s); + i += MAX_CHANNEL_LMSA; + j += MAX_CHANNEL_LMSA; + } + + /* + if (srcProfile != 0 && dstProfile != 0) { + convertPixelsTo(img.bits(), srcProfile, + img.bits(), this, dstProfile, + width * height, renderingIntent); + } + */ + return img; +} + + +void KisLmsF32ColorSpace::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, float opacity) +{ + while (rows > 0) { + + const float *src = reinterpret_cast<const float *>(srcRowStart); + float *dst = reinterpret_cast<float *>(dstRowStart); + const TQ_UINT8 *mask = maskRowStart; + TQ_INT32 columns = numColumns; + + while (columns > 0) { + + float srcAlpha = src[PIXEL_ALPHA]; + + // apply the alphamask + if (mask != 0) { + TQ_UINT8 U8_mask = *mask; + + if (U8_mask != OPACITY_OPAQUE) { + srcAlpha *= UINT8_TO_FLOAT(U8_mask); + } + mask++; + } + + if (srcAlpha > F32_OPACITY_TRANSPARENT + EPSILON) { + + if (opacity < F32_OPACITY_OPAQUE - EPSILON) { + srcAlpha *= opacity; + } + + if (srcAlpha > F32_OPACITY_OPAQUE - EPSILON) { + memcpy(dst, src, MAX_CHANNEL_LMSA * sizeof(float)); + } else { + float dstAlpha = dst[PIXEL_ALPHA]; + + float srcBlend; + + if (dstAlpha > F32_OPACITY_OPAQUE - EPSILON) { + srcBlend = srcAlpha; + } else { + float newAlpha = dstAlpha + (F32_OPACITY_OPAQUE - dstAlpha) * srcAlpha; + dst[PIXEL_ALPHA] = newAlpha; + + if (newAlpha > EPSILON) { + srcBlend = srcAlpha / newAlpha; + } else { + srcBlend = srcAlpha; + } + } + + if (srcBlend > F32_OPACITY_OPAQUE - EPSILON) { + memcpy(dst, src, MAX_CHANNEL_LMS * sizeof(float)); + } else { + dst[PIXEL_LONGWAVE] = FLOAT_BLEND(src[PIXEL_LONGWAVE], dst[PIXEL_LONGWAVE], srcBlend); + dst[PIXEL_MIDDLEWAVE] = FLOAT_BLEND(src[PIXEL_MIDDLEWAVE], dst[PIXEL_MIDDLEWAVE], srcBlend); + dst[PIXEL_SHORTWAVE] = FLOAT_BLEND(src[PIXEL_SHORTWAVE], dst[PIXEL_SHORTWAVE], srcBlend); + } + } + } + + columns--; + src += MAX_CHANNEL_LMSA; + dst += MAX_CHANNEL_LMSA; + } + + rows--; + srcRowStart += srcRowStride; + dstRowStart += dstRowStride; + if(maskRowStart) { + maskRowStart += maskRowStride; + } + } +} + +void KisLmsF32ColorSpace::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, + float /*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++) + { + float srcAlpha = s->alpha; + + // apply the alphamask + if (mask != 0) { + TQ_UINT8 U8_mask = *mask; + + if (U8_mask != OPACITY_OPAQUE) { + srcAlpha = FLOAT_BLEND(srcAlpha, F32_OPACITY_OPAQUE, UINT8_TO_FLOAT(U8_mask)); + } + mask++; + } + d->alpha = srcAlpha * d->alpha; + } + + dst += dstRowSize; + src += srcRowSize; + if(srcAlphaMask) { + srcAlphaMask += maskRowStride; + } + } +} + +void KisLmsF32ColorSpace::compositeCopy(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, float /*opacity*/) +{ + while (rows > 0) { + memcpy(dstRowStart, srcRowStart, numColumns * sizeof(Pixel)); + --rows; + srcRowStart += srcRowStride; + dstRowStart += dstRowStride; + } +} + +void KisLmsF32ColorSpace::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) +{ + float opacity = UINT8_TO_FLOAT(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_COPY: + compositeCopy(dst, dstRowStride, src, srcRowStride, mask, maskRowStride, rows, cols, opacity); + break; + case COMPOSITE_ERASE: + compositeErase(dst, dstRowStride, src, srcRowStride, mask, maskRowStride, rows, cols, opacity); + break; + default: + break; + } +} + +KisCompositeOpList KisLmsF32ColorSpace::userVisiblecompositeOps() const +{ + KisCompositeOpList list; + + list.append(KisCompositeOp(COMPOSITE_OVER)); + return list; +} + |