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/*
* Copyright (c) 2005 Adrian Page <adrian@pagenet.plus.com>
*
* 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 "kdebug.h"
#include "kis_global.h"
#include "kis_f16half_base_colorspace.h"
TQ_UINT8 KisF16HalfBaseColorSpace::getAlpha(const TQ_UINT8 * U8_pixel) const
{
if (m_alphaPos < 0) return OPACITY_OPAQUE;
U8_pixel += m_alphaPos;
const half *pixel = reinterpret_cast<const half *>(U8_pixel);
return HALF_TO_UINT8(*pixel);
}
void KisF16HalfBaseColorSpace::setAlpha(TQ_UINT8 *U8_pixel, TQ_UINT8 alpha, TQ_INT32 nPixels) const
{
if (m_alphaPos < 0) return;
TQ_INT32 psize = pixelSize();
while (nPixels > 0) {
half *pixel = reinterpret_cast<half *>(U8_pixel + m_alphaPos);
*pixel = UINT8_TO_HALF(alpha);
--nPixels;
U8_pixel += psize;
}
}
void KisF16HalfBaseColorSpace::multiplyAlpha(TQ_UINT8 *U8_pixel, TQ_UINT8 U8_alpha, TQ_INT32 nPixels)
{
if (m_alphaPos < 0) return;
TQ_INT32 psize = pixelSize();
half alpha = UINT8_TO_HALF(U8_alpha);
while (nPixels > 0) {
half *pixelAlpha = reinterpret_cast<half *>(U8_pixel + m_alphaPos);
*pixelAlpha *= alpha;
--nPixels;
U8_pixel += psize;
}
}
void KisF16HalfBaseColorSpace::applyAlphaU8Mask(TQ_UINT8 * U8_pixel, TQ_UINT8 * alpha8, TQ_INT32 nPixels)
{
if (m_alphaPos < 0) return;
TQ_INT32 psize = pixelSize();
while (nPixels--) {
half *pixelAlpha = reinterpret_cast<half *>(U8_pixel + m_alphaPos);
*pixelAlpha *= UINT8_TO_HALF(*alpha8);
++alpha8;
U8_pixel += psize;
}
}
void KisF16HalfBaseColorSpace::applyInverseAlphaU8Mask(TQ_UINT8 * U8_pixels, TQ_UINT8 * alpha8, TQ_INT32 nPixels)
{
if (m_alphaPos < 0) return;
TQ_INT32 psize = pixelSize();
while (nPixels--) {
half *pixelAlpha = reinterpret_cast<half *>(U8_pixels + m_alphaPos);
*pixelAlpha *= UINT8_TO_HALF(MAX_SELECTED - *alpha8);
U8_pixels += psize;
++alpha8;
}
}
TQString KisF16HalfBaseColorSpace::channelValueText(const TQ_UINT8 *U8_pixel, TQ_UINT32 channelIndex) const
{
Q_ASSERT(channelIndex < (TQ_UINT32)nChannels());
const half *pixel = reinterpret_cast<const half *>(U8_pixel);
TQ_UINT32 channelPosition = channels()[channelIndex] -> pos() / sizeof(half);
return TQString().setNum(pixel[channelPosition]);
}
TQString KisF16HalfBaseColorSpace::normalisedChannelValueText(const TQ_UINT8 *U8_pixel, TQ_UINT32 channelIndex) const
{
Q_ASSERT(channelIndex < (TQ_UINT32)nChannels());
const half *pixel = reinterpret_cast<const half *>(U8_pixel);
TQ_UINT32 channelPosition = channels()[channelIndex] -> pos() / sizeof(half);
return TQString().setNum(100.0 * pixel[channelPosition]);
}
TQ_UINT8 KisF16HalfBaseColorSpace::scaleToU8(const TQ_UINT8 * U8_pixel, TQ_INT32 channelPos)
{
const half *pixelChannel = reinterpret_cast<const half *>(U8_pixel + channelPos);
return HALF_TO_UINT8(*pixelChannel);
}
TQ_UINT16 KisF16HalfBaseColorSpace::scaleToU16(const TQ_UINT8 * U8_pixel, TQ_INT32 channelPos)
{
const half *pixelChannel = reinterpret_cast<const half *>(U8_pixel + channelPos);
return HALF_TO_UINT16(*pixelChannel);
}
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