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https://github.com/kasmtech/KasmVNC.git
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362 lines
9.2 KiB
C++
362 lines
9.2 KiB
C++
/* Copyright 2013-2014 Pierre Ossman <ossman@cendio.se> 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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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <rfb/PixelFormat.h>
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static const rdr::U8 pixelRed = 0xf1;
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static const rdr::U8 pixelGreen = 0xc3;
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static const rdr::U8 pixelBlue = 0x97;
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static const int fbWidth = 40;
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static const int fbHeight = 30;
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static const int fbArea = fbWidth * fbHeight;
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// Maximum bpp, plus some room for unaligned fudging
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static const int fbMalloc = (fbArea * 4) + 4;
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typedef bool (*testfn) (const rfb::PixelFormat&, const rfb::PixelFormat&);
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struct TestEntry {
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const char *label;
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testfn fn;
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};
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#define min(a,b) (((a) < (b)) ? (a) : (b))
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namespace rfb {
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void makePixel(const rfb::PixelFormat &pf,
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rdr::U8 *buffer)
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{
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rfb::Pixel p;
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p = 0;
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p |= (pixelRed >> (8 - pf.redBits)) << pf.redShift;
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p |= (pixelGreen >> (8 - pf.greenBits)) << pf.greenShift;
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p |= (pixelBlue >> (8 - pf.blueBits)) << pf.blueShift;
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// FIXME: Should we reimplement this as well?
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pf.bufferFromPixel(buffer, p);
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}
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bool verifyPixel(const rfb::PixelFormat &dstpf,
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const rfb::PixelFormat &srcpf,
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const rdr::U8 *buffer)
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{
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rfb::Pixel p;
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int r, g, b;
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int re, ge, be;
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// FIXME: Should we reimplement this as well?
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p = dstpf.pixelFromBuffer(buffer);
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r = (p >> dstpf.redShift) & dstpf.redMax;
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g = (p >> dstpf.greenShift) & dstpf.greenMax;
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b = (p >> dstpf.blueShift) & dstpf.blueMax;
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r = (r * 255 + dstpf.redMax/2) / dstpf.redMax;
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g = (g * 255 + dstpf.greenMax/2) / dstpf.greenMax;
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b = (b * 255 + dstpf.blueMax/2) / dstpf.blueMax;
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// The allowed error depends on:
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//
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// a) The number of bits the format can hold
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// b) The number of bits the source format could hold
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re = (1 << (8 - min(dstpf.redBits, srcpf.redBits))) - 1;
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ge = (1 << (8 - min(dstpf.greenBits, srcpf.greenBits))) - 1;
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be = (1 << (8 - min(dstpf.blueBits, srcpf.blueBits))) - 1;
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if (abs(r - pixelRed) > re)
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return false;
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if (abs(g - pixelGreen) > ge)
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return false;
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if (abs(b - pixelBlue) > be)
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return false;
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return true;
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}
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}
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using rfb::makePixel;
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using rfb::verifyPixel;
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static bool testPixel(const rfb::PixelFormat &dstpf,
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const rfb::PixelFormat &srcpf)
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{
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rfb::Pixel p;
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rdr::U8 buffer[4];
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makePixel(srcpf, buffer);
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p = srcpf.pixelFromBuffer(buffer);
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p = dstpf.pixelFromPixel(srcpf, p);
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memset(buffer, 0, sizeof(buffer));
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dstpf.bufferFromPixel(buffer, p);
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if (!verifyPixel(dstpf, srcpf, buffer))
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return false;
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return true;
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}
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static bool testBuffer(const rfb::PixelFormat &dstpf,
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const rfb::PixelFormat &srcpf)
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{
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int i, x, y, unaligned;
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rdr::U8 bufIn[fbMalloc], bufOut[fbMalloc];
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// Once aligned, and once unaligned
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for (unaligned = 0;unaligned < 2;unaligned++) {
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for (i = 0;i < fbArea;i++)
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makePixel(srcpf, bufIn + unaligned + i*srcpf.bpp/8);
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memset(bufOut, 0, sizeof(bufOut));
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dstpf.bufferFromBuffer(bufOut + unaligned, srcpf,
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bufIn + unaligned, fbArea);
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for (i = 0;i < fbArea;i++) {
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if (!verifyPixel(dstpf, srcpf, bufOut + unaligned + i*dstpf.bpp/8))
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return false;
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}
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memset(bufIn, 0, sizeof(bufIn));
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for (y = 0;y < fbHeight;y++) {
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for (x = 0;x < fbWidth/2;x++)
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makePixel(srcpf, bufIn + unaligned + (x + y*fbWidth)*srcpf.bpp/8);
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}
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memset(bufOut, 0, sizeof(bufOut));
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dstpf.bufferFromBuffer(bufOut + unaligned, srcpf, bufIn + unaligned,
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fbWidth/2, fbHeight, fbWidth, fbWidth);
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for (y = 0;y < fbHeight;y++) {
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for (x = 0;x < fbWidth;x++) {
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if (x < fbWidth/2) {
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if (!verifyPixel(dstpf, srcpf,
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bufOut + unaligned + (x + y*fbWidth)*dstpf.bpp/8))
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return false;
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} else {
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const rdr::U8 zero[4] = { 0, 0, 0, 0 };
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if (memcmp(bufOut + unaligned + (x + y*fbWidth)*dstpf.bpp/8, zero,
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dstpf.bpp/8) != 0)
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return false;
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}
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}
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}
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}
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return true;
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}
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static bool testRGB(const rfb::PixelFormat &dstpf,
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const rfb::PixelFormat &srcpf)
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{
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int i, x, y, unaligned;
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rdr::U8 bufIn[fbMalloc], bufRGB[fbMalloc], bufOut[fbMalloc];
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// Once aligned, and once unaligned
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for (unaligned = 0;unaligned < 2;unaligned++) {
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for (i = 0;i < fbArea;i++)
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makePixel(srcpf, bufIn + unaligned + i*srcpf.bpp/8);
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memset(bufRGB, 0, sizeof(bufRGB));
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srcpf.rgbFromBuffer(bufRGB + unaligned, bufIn + unaligned, fbArea);
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memset(bufOut, 0, sizeof(bufOut));
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dstpf.bufferFromRGB(bufOut + unaligned, bufRGB + unaligned, fbArea);
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for (i = 0;i < fbArea;i++) {
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if (!verifyPixel(dstpf, srcpf, bufOut + unaligned + i*dstpf.bpp/8))
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return false;
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}
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memset(bufIn, 0, sizeof(bufIn));
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for (y = 0;y < fbHeight;y++) {
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for (x = 0;x < fbWidth/2;x++)
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makePixel(srcpf, bufIn + unaligned + (x + y*fbWidth)*srcpf.bpp/8);
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}
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memset(bufRGB, 0, sizeof(bufRGB));
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srcpf.rgbFromBuffer(bufRGB + unaligned, bufIn + unaligned,
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fbWidth/2, fbWidth, fbHeight);
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memset(bufOut, 0, sizeof(bufOut));
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dstpf.bufferFromRGB(bufOut + unaligned, bufRGB + unaligned,
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fbWidth/2, fbWidth, fbHeight);
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for (y = 0;y < fbHeight;y++) {
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for (x = 0;x < fbWidth;x++) {
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if (x < fbWidth/2) {
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if (!verifyPixel(dstpf, srcpf,
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bufOut + unaligned + (x + y*fbWidth)*dstpf.bpp/8))
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return false;
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} else {
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const rdr::U8 zero[4] = { 0, 0, 0, 0 };
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if (memcmp(bufOut + unaligned + (x + y*fbWidth)*dstpf.bpp/8, zero,
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dstpf.bpp/8) != 0)
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return false;
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}
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}
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}
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}
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return true;
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}
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static bool testPixelRGB(const rfb::PixelFormat &dstpf,
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const rfb::PixelFormat &srcpf)
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{
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rfb::Pixel p;
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rdr::U16 r16, g16, b16;
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rdr::U8 r8, g8, b8;
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rdr::U8 buffer[4];
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makePixel(srcpf, buffer);
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p = srcpf.pixelFromBuffer(buffer);
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srcpf.rgbFromPixel(p, &r16, &g16, &b16);
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p = dstpf.pixelFromRGB(r16, g16, b16);
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memset(buffer, 0, sizeof(buffer));
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dstpf.bufferFromPixel(buffer, p);
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if (!verifyPixel(dstpf, srcpf, buffer))
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return false;
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makePixel(srcpf, buffer);
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p = srcpf.pixelFromBuffer(buffer);
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srcpf.rgbFromPixel(p, &r8, &g8, &b8);
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p = dstpf.pixelFromRGB(r8, g8, b8);
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memset(buffer, 0, sizeof(buffer));
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dstpf.bufferFromPixel(buffer, p);
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if (!verifyPixel(dstpf, srcpf, buffer))
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return false;
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return true;
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}
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struct TestEntry tests[] = {
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{"Pixel from pixel", testPixel},
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{"Buffer from buffer", testBuffer},
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{"Buffer to/from RGB", testRGB},
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{"Pixel to/from RGB", testPixelRGB},
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};
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static void doTests(const rfb::PixelFormat &dstpf,
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const rfb::PixelFormat &srcpf)
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{
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size_t i;
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char dstb[256], srcb[256];
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dstpf.print(dstb, sizeof(dstb));
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srcpf.print(srcb, sizeof(srcb));
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printf("\n");
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printf("%s to %s\n", srcb, dstb);
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printf("\n");
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for (i = 0;i < sizeof(tests)/sizeof(tests[0]);i++) {
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printf(" %s: ", tests[i].label);
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fflush(stdout);
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if (tests[i].fn(dstpf, srcpf))
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printf("OK");
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else
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printf("FAILED");
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printf("\n");
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}
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}
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int main(int argc, char **argv)
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{
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rfb::PixelFormat dstpf, srcpf;
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printf("Pixel Conversion Correctness Test\n");
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/* rgb888 targets */
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dstpf.parse("rgb888");
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srcpf.parse("rgb888");
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doTests(dstpf, srcpf);
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srcpf.parse("bgr888");
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doTests(dstpf, srcpf);
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srcpf.parse("rgb565");
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doTests(dstpf, srcpf);
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srcpf.parse("rgb232");
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doTests(dstpf, srcpf);
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/* rgb565 targets */
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dstpf.parse("rgb565");
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srcpf.parse("rgb888");
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doTests(dstpf, srcpf);
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srcpf.parse("bgr565");
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doTests(dstpf, srcpf);
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srcpf.parse("rgb232");
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doTests(dstpf, srcpf);
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/* rgb232 targets */
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dstpf.parse("rgb232");
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srcpf.parse("rgb888");
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doTests(dstpf, srcpf);
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srcpf.parse("rgb565");
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doTests(dstpf, srcpf);
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srcpf.parse("bgr232");
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doTests(dstpf, srcpf);
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/* endian conversion (both ways) */
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dstpf = rfb::PixelFormat(32, 24, false, true, 255, 255, 255, 0, 8, 16);
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srcpf = rfb::PixelFormat(32, 24, true, true, 255, 255, 255, 0, 8, 16);
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doTests(dstpf, srcpf);
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doTests(srcpf, dstpf);
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dstpf = rfb::PixelFormat(16, 16, false, true, 31, 63, 31, 0, 5, 11);
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srcpf = rfb::PixelFormat(16, 16, true, true, 31, 63, 31, 0, 5, 11);
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doTests(dstpf, srcpf);
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doTests(srcpf, dstpf);
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// Pesky case that is very asymetrical
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dstpf = rfb::PixelFormat(32, 24, false, true, 255, 255, 255, 0, 8, 16);
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srcpf = rfb::PixelFormat(32, 24, true, true, 255, 255, 255, 0, 24, 8);
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doTests(dstpf, srcpf);
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doTests(srcpf, dstpf);
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}
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