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126 lines
3.8 KiB
126 lines
3.8 KiB
/*
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* Copyright (c) 2005 Adrian Page <adrian@pagenet.plus.com>
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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, Boston, MA 02110-1301, USA.
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*/
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#include "kdebug.h"
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#include "kis_global.h"
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#include "kis_f32_base_colorspace.h"
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TQ_UINT8 KisF32BaseColorSpace::getAlpha(const TQ_UINT8 * U8_pixel) const
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{
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if (m_alphaPos < 0) return OPACITY_OPAQUE;
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U8_pixel += m_alphaPos;
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const float *pixel = reinterpret_cast<const float *>(U8_pixel);
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return FLOAT_TO_UINT8(*pixel);
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}
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void KisF32BaseColorSpace::setAlpha(TQ_UINT8 *U8_pixel, TQ_UINT8 alpha, TQ_INT32 nPixels) const
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{
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if (m_alphaPos < 0) return;
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TQ_INT32 psize = pixelSize();
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while (nPixels > 0) {
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float *pixel = reinterpret_cast<float *>(U8_pixel + m_alphaPos);
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*pixel = UINT8_TO_FLOAT(alpha);
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--nPixels;
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U8_pixel += psize;
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}
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}
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void KisF32BaseColorSpace::multiplyAlpha(TQ_UINT8 *U8_pixel, TQ_UINT8 U8_alpha, TQ_INT32 nPixels)
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{
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if (m_alphaPos < 0) return;
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TQ_INT32 psize = pixelSize();
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float alpha = UINT8_TO_FLOAT(U8_alpha);
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while (nPixels > 0) {
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float *pixelAlpha = reinterpret_cast<float *>(U8_pixel + m_alphaPos);
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*pixelAlpha *= alpha;
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--nPixels;
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U8_pixel += psize;
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}
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}
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void KisF32BaseColorSpace::applyAlphaU8Mask(TQ_UINT8 * U8_pixel, TQ_UINT8 * alpha8, TQ_INT32 nPixels)
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{
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if (m_alphaPos < 0) return;
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TQ_INT32 psize = pixelSize();
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while (nPixels--) {
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float *pixelAlpha = reinterpret_cast<float *>(U8_pixel + m_alphaPos);
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*pixelAlpha *= UINT8_TO_FLOAT(*alpha8);
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++alpha8;
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U8_pixel += psize;
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}
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}
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void KisF32BaseColorSpace::applyInverseAlphaU8Mask(TQ_UINT8 * U8_pixels, TQ_UINT8 * alpha8, TQ_INT32 nPixels)
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{
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if (m_alphaPos < 0) return;
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TQ_INT32 psize = pixelSize();
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while (nPixels--) {
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float *pixelAlpha = reinterpret_cast<float *>(U8_pixels + m_alphaPos);
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*pixelAlpha *= UINT8_TO_FLOAT(MAX_SELECTED - *alpha8);
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U8_pixels += psize;
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++alpha8;
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}
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}
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TQString KisF32BaseColorSpace::channelValueText(const TQ_UINT8 *U8_pixel, TQ_UINT32 channelIndex) const
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{
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Q_ASSERT(channelIndex < (TQ_UINT32)nChannels());
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const float *pixel = reinterpret_cast<const float *>(U8_pixel);
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TQ_UINT32 channelPosition = channels()[channelIndex]->pos() / sizeof(float);
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return TQString().setNum(pixel[channelPosition]);
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}
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TQString KisF32BaseColorSpace::normalisedChannelValueText(const TQ_UINT8 *U8_pixel, TQ_UINT32 channelIndex) const
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{
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Q_ASSERT(channelIndex < (TQ_UINT32)nChannels());
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const float *pixel = reinterpret_cast<const float *>(U8_pixel);
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TQ_UINT32 channelPosition = channels()[channelIndex]->pos() / sizeof(float);
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return TQString().setNum(100.0 * pixel[channelPosition]);
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}
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TQ_UINT8 KisF32BaseColorSpace::scaleToU8(const TQ_UINT8 * U8_pixel, TQ_INT32 channelPos)
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{
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const float *pixelChannel = reinterpret_cast<const float *>(U8_pixel + channelPos);
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return FLOAT_TO_UINT8(*pixelChannel);
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}
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TQ_UINT16 KisF32BaseColorSpace::scaleToU16(const TQ_UINT8 * U8_pixel, TQ_INT32 channelPos)
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{
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const float *pixelChannel = reinterpret_cast<const float *>(U8_pixel + channelPos);
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return FLOAT_TO_UINT16(*pixelChannel);
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}
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