mirror of
https://github.com/kasmtech/KasmVNC.git
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136 lines
3.1 KiB
C++
136 lines
3.1 KiB
C++
/* Copyright 2009-2014 Pierre Ossman for Cendio AB
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*
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* This 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 software 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 software; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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* USA.
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*/
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namespace rfb {
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inline Pixel PixelFormat::pixelFromBuffer(const rdr::U8* buffer) const
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{
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Pixel p;
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p = 0;
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if (bigEndian) {
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switch (bpp) {
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case 32:
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p |= ((Pixel)*(buffer++)) << 24;
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p |= ((Pixel)*(buffer++)) << 16;
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case 16:
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p |= ((Pixel)*(buffer++)) << 8;
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case 8:
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p |= *buffer;
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}
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} else {
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p |= buffer[0];
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if (bpp >= 16) {
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p |= ((Pixel)buffer[1]) << 8;
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if (bpp == 32) {
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p |= ((Pixel)buffer[2]) << 16;
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p |= ((Pixel)buffer[3]) << 24;
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}
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}
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}
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return p;
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}
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inline void PixelFormat::bufferFromPixel(rdr::U8* buffer, Pixel p) const
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{
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if (bigEndian) {
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switch (bpp) {
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case 32:
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*(buffer++) = (p >> 24) & 0xff;
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*(buffer++) = (p >> 16) & 0xff;
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case 16:
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*(buffer++) = (p >> 8) & 0xff;
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case 8:
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*(buffer++) = (p >> 0) & 0xff;
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}
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} else {
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buffer[0] = (p >> 0) & 0xff;
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if (bpp >= 16) {
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buffer[1] = (p >> 8) & 0xff;
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if (bpp == 32) {
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buffer[2] = (p >> 16) & 0xff;
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buffer[3] = (p >> 24) & 0xff;
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}
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}
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}
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}
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inline Pixel PixelFormat::pixelFromRGB(rdr::U16 red, rdr::U16 green, rdr::U16 blue) const
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{
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Pixel p;
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p = (Pixel)downconvTable[(redBits-1)*256 + (red >> 8)] << redShift;
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p |= (Pixel)downconvTable[(greenBits-1)*256 + (green >> 8)] << greenShift;
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p |= (Pixel)downconvTable[(blueBits-1)*256 + (blue >> 8)] << blueShift;
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return p;
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}
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inline Pixel PixelFormat::pixelFromRGB(rdr::U8 red, rdr::U8 green, rdr::U8 blue) const
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{
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Pixel p;
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p = (Pixel)downconvTable[(redBits-1)*256 + red] << redShift;
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p |= (Pixel)downconvTable[(greenBits-1)*256 + green] << greenShift;
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p |= (Pixel)downconvTable[(blueBits-1)*256 + blue] << blueShift;
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return p;
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}
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inline void PixelFormat::rgbFromPixel(Pixel p, rdr::U16 *r, rdr::U16 *g, rdr::U16 *b) const
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{
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rdr::U8 _r, _g, _b;
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_r = p >> redShift;
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_g = p >> greenShift;
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_b = p >> blueShift;
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_r = upconvTable[(redBits-1)*256 + _r];
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_g = upconvTable[(greenBits-1)*256 + _g];
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_b = upconvTable[(blueBits-1)*256 + _b];
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*r = _r << 8 | _r;
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*g = _g << 8 | _g;
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*b = _b << 8 | _b;
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}
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inline void PixelFormat::rgbFromPixel(Pixel p, rdr::U8 *r, rdr::U8 *g, rdr::U8 *b) const
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{
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rdr::U8 _r, _g, _b;
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_r = p >> redShift;
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_g = p >> greenShift;
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_b = p >> blueShift;
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*r = upconvTable[(redBits-1)*256 + _r];
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*g = upconvTable[(greenBits-1)*256 + _g];
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*b = upconvTable[(blueBits-1)*256 + _b];
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}
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}
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