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386 lines
13 KiB
386 lines
13 KiB
/*
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* Copyright (c) 2002 Patrick Julien <freak@codepimps.org>
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* Copyright (c) 2004 Boudewijn Rempt <boud@valdyas.org>
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* Copyright (c) 2005 Adrian Page <adrian@pagenet.plus.com>
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* Copyright (c) 2005 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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#include <config.h>
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#include <limits.h>
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#include <stdlib.h>
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#include LCMS_HEADER
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#include <qimage.h>
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#include <kdebug.h>
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#include <klocale.h>
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#include "kis_lms_f32_colorspace.h"
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#include "kis_color_conversions.h"
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namespace {
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const Q_INT32 MAX_CHANNEL_LMS = 3;
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const Q_INT32 MAX_CHANNEL_LMSA = 4;
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}
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#include "kis_integer_maths.h"
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#define FLOAT_MAX 1.0f //temp
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#define EPSILON 1e-6
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// FIXME: lcms doesn't support 32-bit float
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#define F32_LCMS_TYPE TYPE_BGRA_16
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// disable the lcms handling by setting profile=0
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KisLmsF32ColorSpace::KisLmsF32ColorSpace(KisColorSpaceFactoryRegistry * parent, KisProfile */*p*/) :
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KisF32BaseColorSpace(KisID("LMSAF32", i18n("LMS (32-bit float/channel)")), F32_LCMS_TYPE, icSig3colorData, parent, 0)
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{
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m_channels.push_back(new KisChannelInfo(i18n("Long"), i18n("L"), PIXEL_LONGWAVE * sizeof(float), KisChannelInfo::COLOR, KisChannelInfo::FLOAT32, sizeof(float)));
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m_channels.push_back(new KisChannelInfo(i18n("Middle"), i18n("M"), PIXEL_MIDDLEWAVE * sizeof(float), KisChannelInfo::COLOR, KisChannelInfo::FLOAT32, sizeof(float)));
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m_channels.push_back(new KisChannelInfo(i18n("Short"), i18n("S"), PIXEL_SHORTWAVE * sizeof(float), KisChannelInfo::COLOR, KisChannelInfo::FLOAT32, sizeof(float)));
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m_channels.push_back(new KisChannelInfo(i18n("Alpha"), i18n("A"), PIXEL_ALPHA * sizeof(float), KisChannelInfo::ALPHA, KisChannelInfo::FLOAT32, sizeof(float)));
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m_alphaPos = PIXEL_ALPHA * sizeof(float);
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}
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KisLmsF32ColorSpace::~KisLmsF32ColorSpace()
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{
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}
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void KisLmsF32ColorSpace::setPixel(Q_UINT8 *dst, float longWave, float middleWave, float shortWave, float alpha) const
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{
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Pixel *dstPixel = reinterpret_cast<Pixel *>(dst);
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dstPixel->longWave = longWave;
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dstPixel->middleWave = middleWave;
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dstPixel->shortWave = shortWave;
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dstPixel->alpha = alpha;
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}
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void KisLmsF32ColorSpace::getPixel(const Q_UINT8 *src, float *longWave, float *middleWave, float *shortWave, float *alpha) const
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{
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const Pixel *srcPixel = reinterpret_cast<const Pixel *>(src);
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*longWave = srcPixel->longWave;
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*middleWave = srcPixel->middleWave;
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*shortWave = srcPixel->shortWave;
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*alpha = srcPixel->alpha;
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}
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void KisLmsF32ColorSpace::fromQColor(const QColor& c, Q_UINT8 *dstU8, KisProfile * /*profile*/)
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{
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Pixel *dst = reinterpret_cast<Pixel *>(dstU8);
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dst->longWave = computeLong(c.red(),c.green(),c.blue());
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dst->middleWave = computeMiddle(c.red(),c.green(),c.blue());
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dst->shortWave = computeShort(c.red(),c.green(),c.blue());
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}
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void KisLmsF32ColorSpace::fromQColor(const QColor& c, Q_UINT8 opacity, Q_UINT8 *dstU8, KisProfile * /*profile*/)
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{
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Pixel *dst = reinterpret_cast<Pixel *>(dstU8);
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dst->longWave = computeLong(c.red(),c.green(),c.blue());
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dst->middleWave = computeMiddle(c.red(),c.green(),c.blue());
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dst->shortWave = computeShort(c.red(),c.green(),c.blue());
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dst->alpha = UINT8_TO_FLOAT(opacity);
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}
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void KisLmsF32ColorSpace::toQColor(const Q_UINT8 *srcU8, QColor *c, KisProfile * /*profile*/)
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{
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const Pixel *src = reinterpret_cast<const Pixel *>(srcU8);
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c->setRgb(computeRed(src->longWave,src->middleWave,src->shortWave), computeGreen(src->longWave,src->middleWave,src->shortWave), computeBlue(src->longWave,src->middleWave,src->shortWave));
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}
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void KisLmsF32ColorSpace::toQColor(const Q_UINT8 *srcU8, QColor *c, Q_UINT8 *opacity, KisProfile * /*profile*/)
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{
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const Pixel *src = reinterpret_cast<const Pixel *>(srcU8);
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c->setRgb(computeRed(src->longWave,src->middleWave,src->shortWave), computeGreen(src->longWave,src->middleWave,src->shortWave), computeBlue(src->longWave,src->middleWave,src->shortWave));
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*opacity = FLOAT_TO_UINT8(src->alpha);
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}
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Q_UINT8 KisLmsF32ColorSpace::difference(const Q_UINT8 *src1U8, const Q_UINT8 *src2U8)
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{
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const Pixel *src1 = reinterpret_cast<const Pixel *>(src1U8);
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const Pixel *src2 = reinterpret_cast<const Pixel *>(src2U8);
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return FLOAT_TO_UINT8(QMAX(QABS(src2->longWave - src1->longWave),
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QMAX(QABS(src2->middleWave - src1->middleWave),
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QABS(src2->shortWave - src1->shortWave))));
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}
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void KisLmsF32ColorSpace::mixColors(const Q_UINT8 **colors, const Q_UINT8 *weights, Q_UINT32 nColors, Q_UINT8 *dst) const
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{
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float totalLong = 0, totalMiddle = 0, totalShort = 0, newAlpha = 0;
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while (nColors--)
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{
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const Pixel *pixel = reinterpret_cast<const Pixel *>(*colors);
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float alpha = pixel->alpha;
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float alphaTimesWeight = alpha * UINT8_TO_FLOAT(*weights);
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totalLong += pixel->longWave * alphaTimesWeight;
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totalMiddle += pixel->middleWave * alphaTimesWeight;
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totalShort += pixel->shortWave * alphaTimesWeight;
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newAlpha += alphaTimesWeight;
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weights++;
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colors++;
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}
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Q_ASSERT(newAlpha <= F32_OPACITY_OPAQUE);
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Pixel *dstPixel = reinterpret_cast<Pixel *>(dst);
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dstPixel->alpha = newAlpha;
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if (newAlpha > EPSILON) {
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totalLong = totalLong / newAlpha;
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totalMiddle = totalMiddle / newAlpha;
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totalShort = totalShort / newAlpha;
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}
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dstPixel->longWave = totalLong;
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dstPixel->middleWave = totalMiddle;
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dstPixel->shortWave = totalShort;
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}
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QValueVector<KisChannelInfo *> KisLmsF32ColorSpace::channels() const
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{
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return m_channels;
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}
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Q_UINT32 KisLmsF32ColorSpace::nChannels() const
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{
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return MAX_CHANNEL_LMSA;
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}
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Q_UINT32 KisLmsF32ColorSpace::nColorChannels() const
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{
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return MAX_CHANNEL_LMS;
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}
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Q_UINT32 KisLmsF32ColorSpace::pixelSize() const
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{
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return MAX_CHANNEL_LMSA * sizeof(float);
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}
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QImage KisLmsF32ColorSpace::convertToQImage(const Q_UINT8 *dataU8, Q_INT32 width, Q_INT32 height,
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KisProfile * /*dstProfile*/,
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Q_INT32 /*renderingIntent*/, float /*exposure*/)
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{
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const float *data = reinterpret_cast<const float *>(dataU8);
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QImage img = QImage(width, height, 32, 0, QImage::LittleEndian);
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img.setAlphaBuffer(true);
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Q_INT32 i = 0;
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uchar *j = img.bits();
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while ( i < width * height * MAX_CHANNEL_LMSA) {
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double l = *( data + i + PIXEL_LONGWAVE );
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double m = *( data + i + PIXEL_MIDDLEWAVE );
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double s = *( data + i + PIXEL_SHORTWAVE );
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*( j + 3) = FLOAT_TO_UINT8(*( data + i + PIXEL_ALPHA ));
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*( j + 2 ) = computeRed(l,m,s);
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*( j + 1 ) = computeGreen(l,m,s);
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*( j + 0 ) = computeBlue(l,m,s);
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i += MAX_CHANNEL_LMSA;
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j += MAX_CHANNEL_LMSA;
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}
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/*
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if (srcProfile != 0 && dstProfile != 0) {
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convertPixelsTo(img.bits(), srcProfile,
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img.bits(), this, dstProfile,
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width * height, renderingIntent);
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}
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*/
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return img;
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}
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void KisLmsF32ColorSpace::compositeOver(Q_UINT8 *dstRowStart, Q_INT32 dstRowStride, const Q_UINT8 *srcRowStart, Q_INT32 srcRowStride, const Q_UINT8 *maskRowStart, Q_INT32 maskRowStride, Q_INT32 rows, Q_INT32 numColumns, float opacity)
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{
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while (rows > 0) {
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const float *src = reinterpret_cast<const float *>(srcRowStart);
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float *dst = reinterpret_cast<float *>(dstRowStart);
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const Q_UINT8 *mask = maskRowStart;
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Q_INT32 columns = numColumns;
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while (columns > 0) {
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float srcAlpha = src[PIXEL_ALPHA];
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// apply the alphamask
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if (mask != 0) {
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Q_UINT8 U8_mask = *mask;
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if (U8_mask != OPACITY_OPAQUE) {
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srcAlpha *= UINT8_TO_FLOAT(U8_mask);
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}
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mask++;
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}
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if (srcAlpha > F32_OPACITY_TRANSPARENT + EPSILON) {
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if (opacity < F32_OPACITY_OPAQUE - EPSILON) {
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srcAlpha *= opacity;
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}
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if (srcAlpha > F32_OPACITY_OPAQUE - EPSILON) {
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memcpy(dst, src, MAX_CHANNEL_LMSA * sizeof(float));
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} else {
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float dstAlpha = dst[PIXEL_ALPHA];
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float srcBlend;
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if (dstAlpha > F32_OPACITY_OPAQUE - EPSILON) {
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srcBlend = srcAlpha;
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} else {
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float newAlpha = dstAlpha + (F32_OPACITY_OPAQUE - dstAlpha) * srcAlpha;
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dst[PIXEL_ALPHA] = newAlpha;
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if (newAlpha > EPSILON) {
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srcBlend = srcAlpha / newAlpha;
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} else {
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srcBlend = srcAlpha;
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}
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}
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if (srcBlend > F32_OPACITY_OPAQUE - EPSILON) {
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memcpy(dst, src, MAX_CHANNEL_LMS * sizeof(float));
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} else {
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dst[PIXEL_LONGWAVE] = FLOAT_BLEND(src[PIXEL_LONGWAVE], dst[PIXEL_LONGWAVE], srcBlend);
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dst[PIXEL_MIDDLEWAVE] = FLOAT_BLEND(src[PIXEL_MIDDLEWAVE], dst[PIXEL_MIDDLEWAVE], srcBlend);
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dst[PIXEL_SHORTWAVE] = FLOAT_BLEND(src[PIXEL_SHORTWAVE], dst[PIXEL_SHORTWAVE], srcBlend);
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}
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}
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}
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columns--;
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src += MAX_CHANNEL_LMSA;
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dst += MAX_CHANNEL_LMSA;
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}
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rows--;
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srcRowStart += srcRowStride;
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dstRowStart += dstRowStride;
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if(maskRowStart) {
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maskRowStart += maskRowStride;
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}
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}
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}
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void KisLmsF32ColorSpace::compositeErase(Q_UINT8 *dst,
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Q_INT32 dstRowSize,
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const Q_UINT8 *src,
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Q_INT32 srcRowSize,
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const Q_UINT8 *srcAlphaMask,
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Q_INT32 maskRowStride,
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Q_INT32 rows,
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Q_INT32 cols,
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float /*opacity*/)
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{
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while (rows-- > 0)
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{
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const Pixel *s = reinterpret_cast<const Pixel *>(src);
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Pixel *d = reinterpret_cast<Pixel *>(dst);
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const Q_UINT8 *mask = srcAlphaMask;
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for (Q_INT32 i = cols; i > 0; i--, s++, d++)
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{
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float srcAlpha = s->alpha;
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// apply the alphamask
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if (mask != 0) {
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Q_UINT8 U8_mask = *mask;
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if (U8_mask != OPACITY_OPAQUE) {
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srcAlpha = FLOAT_BLEND(srcAlpha, F32_OPACITY_OPAQUE, UINT8_TO_FLOAT(U8_mask));
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}
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mask++;
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}
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d->alpha = srcAlpha * d->alpha;
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}
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dst += dstRowSize;
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src += srcRowSize;
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if(srcAlphaMask) {
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srcAlphaMask += maskRowStride;
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}
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}
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}
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void KisLmsF32ColorSpace::compositeCopy(Q_UINT8 *dstRowStart, Q_INT32 dstRowStride, const Q_UINT8 *srcRowStart, Q_INT32 srcRowStride,
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const Q_UINT8 */*maskRowStart*/, Q_INT32 /*maskRowStride*/, Q_INT32 rows, Q_INT32 numColumns, float /*opacity*/)
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{
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while (rows > 0) {
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memcpy(dstRowStart, srcRowStart, numColumns * sizeof(Pixel));
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--rows;
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srcRowStart += srcRowStride;
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dstRowStart += dstRowStride;
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}
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}
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void KisLmsF32ColorSpace::bitBlt(Q_UINT8 *dst,
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Q_INT32 dstRowStride,
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const Q_UINT8 *src,
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Q_INT32 srcRowStride,
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const Q_UINT8 *mask,
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Q_INT32 maskRowStride,
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Q_UINT8 U8_opacity,
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Q_INT32 rows,
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Q_INT32 cols,
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const KisCompositeOp& op)
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{
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float opacity = UINT8_TO_FLOAT(U8_opacity);
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switch (op.op()) {
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case COMPOSITE_UNDEF:
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// Undefined == no composition
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break;
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case COMPOSITE_OVER:
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compositeOver(dst, dstRowStride, src, srcRowStride, mask, maskRowStride, rows, cols, opacity);
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break;
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case COMPOSITE_COPY:
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compositeCopy(dst, dstRowStride, src, srcRowStride, mask, maskRowStride, rows, cols, opacity);
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break;
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case COMPOSITE_ERASE:
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compositeErase(dst, dstRowStride, src, srcRowStride, mask, maskRowStride, rows, cols, opacity);
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break;
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default:
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break;
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}
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}
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KisCompositeOpList KisLmsF32ColorSpace::userVisiblecompositeOps() const
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{
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KisCompositeOpList list;
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list.append(KisCompositeOp(COMPOSITE_OVER));
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return list;
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}
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