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149 lines
4.4 KiB
149 lines
4.4 KiB
/*
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* Copyright (c) 2005 Boudewijn Rempt <boud@valdyas.org>
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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_abstract_colorspace.h"
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#include "kis_integer_maths.h"
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#include "kis_u16_base_colorspace.h"
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TQ_UINT8 KisU16BaseColorSpace::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 TQ_UINT16 *pixel = reinterpret_cast<const TQ_UINT16 *>(U8_pixel);
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return UINT16_TO_UINT8(*pixel);
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}
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void KisU16BaseColorSpace::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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TQ_UINT16 *pixel = reinterpret_cast<TQ_UINT16 *>(U8_pixel + m_alphaPos);
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pixel[0] = UINT8_TO_UINT16(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 KisU16BaseColorSpace::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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TQ_UINT16 alpha = UINT8_TO_UINT16(U8_alpha);
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while (nPixels > 0) {
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TQ_UINT16 *pixelAlpha = reinterpret_cast<TQ_UINT16 *>(U8_pixel + m_alphaPos);
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*pixelAlpha = UINT16_MULT(*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 KisU16BaseColorSpace::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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// Go to the alpha position (which is given in bytes from the start of the pixel,
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// and cast to short.
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TQ_UINT16 *pixelAlpha = reinterpret_cast<TQ_UINT16 *>(U8_pixel + m_alphaPos);
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*pixelAlpha = UINT8_MULT(*pixelAlpha, *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 KisU16BaseColorSpace::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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TQ_UINT16 s_alpha8;
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TQ_UINT32 p_alpha, s_alpha16;
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TQ_UINT16 *alpha = reinterpret_cast<TQ_UINT16 *>(U8_pixels + m_alphaPos);
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p_alpha = *(alpha);
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s_alpha8 = MAX_SELECTED - *alpha8;
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s_alpha16 = UINT8_TO_UINT16(s_alpha8);
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// Go to the alpha position (which is given in bytes from the start of the pixel,
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// and cast to short.
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alpha[0] = UINT16_MULT(p_alpha, s_alpha16);
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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 KisU16BaseColorSpace::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 TQ_UINT16 *pixel = reinterpret_cast<const TQ_UINT16 *>(U8_pixel);
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TQ_UINT32 channelPosition = channels()[channelIndex]->pos() / sizeof(TQ_UINT16);
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return TQString().setNum(pixel[channelPosition]);
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}
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TQString KisU16BaseColorSpace::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 TQ_UINT16 *pixel = reinterpret_cast<const TQ_UINT16 *>(U8_pixel);
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TQ_UINT32 channelPosition = m_channels[channelIndex]->pos() / sizeof(TQ_UINT16);
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return TQString().setNum(100.0 * static_cast<float>(pixel[channelPosition]) / UINT16_MAX);
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}
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TQ_UINT8 KisU16BaseColorSpace::scaleToU8(const TQ_UINT8 * U8_pixel, TQ_INT32 channelPos)
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{
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const TQ_UINT16 *pixel = reinterpret_cast<const TQ_UINT16 *>(U8_pixel);
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return UINT16_TO_UINT8(pixel[channelPos]);
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}
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TQ_UINT16 KisU16BaseColorSpace::scaleToU16(const TQ_UINT8 * U8_pixel, TQ_INT32 channelPos)
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{
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const TQ_UINT16 *pixel = reinterpret_cast<const TQ_UINT16 *>(U8_pixel);
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return pixel[channelPos];
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}
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