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- /* Copyright 2013-2014 Pierre Ossman <ossman@cendio.se> for Cendio AB
- *
- * This 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 software 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 software; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
- * USA.
- */
-
- #include <stdio.h>
- #include <stdlib.h>
- #include <string.h>
-
- #include <rfb/PixelFormat.h>
-
- static const rdr::U8 pixelRed = 0xf1;
- static const rdr::U8 pixelGreen = 0xc3;
- static const rdr::U8 pixelBlue = 0x97;
-
- static const int fbWidth = 40;
- static const int fbHeight = 30;
- static const int fbArea = fbWidth * fbHeight;
- // Maximum bpp, plus some room for unaligned fudging
- static const int fbMalloc = (fbArea * 4) + 4;
-
- typedef bool (*testfn) (const rfb::PixelFormat&, const rfb::PixelFormat&);
-
- struct TestEntry {
- const char *label;
- testfn fn;
- };
-
- #define min(a,b) (((a) < (b)) ? (a) : (b))
-
- namespace rfb {
-
- void makePixel(const rfb::PixelFormat &pf,
- rdr::U8 *buffer)
- {
- rfb::Pixel p;
-
- p = 0;
- p |= (pixelRed >> (8 - pf.redBits)) << pf.redShift;
- p |= (pixelGreen >> (8 - pf.greenBits)) << pf.greenShift;
- p |= (pixelBlue >> (8 - pf.blueBits)) << pf.blueShift;
-
- // FIXME: Should we reimplement this as well?
- pf.bufferFromPixel(buffer, p);
- }
-
- bool verifyPixel(const rfb::PixelFormat &dstpf,
- const rfb::PixelFormat &srcpf,
- const rdr::U8 *buffer)
- {
- rfb::Pixel p;
- int r, g, b;
- int re, ge, be;
-
- // FIXME: Should we reimplement this as well?
- p = dstpf.pixelFromBuffer(buffer);
-
- r = (p >> dstpf.redShift) & dstpf.redMax;
- g = (p >> dstpf.greenShift) & dstpf.greenMax;
- b = (p >> dstpf.blueShift) & dstpf.blueMax;
-
- r <<= 8 - dstpf.redBits;
- g <<= 8 - dstpf.greenBits;
- b <<= 8 - dstpf.blueBits;
-
- // The allowed error depends on:
- //
- // a) The number of bits the format can hold
- // b) The number of bits the source format could hold
-
- re = (1 << (8 - min(dstpf.redBits, srcpf.redBits))) - 1;
- ge = (1 << (8 - min(dstpf.greenBits, srcpf.greenBits))) - 1;
- be = (1 << (8 - min(dstpf.blueBits, srcpf.blueBits))) - 1;
-
- if (abs(r - pixelRed) > re)
- return false;
- if (abs(g - pixelGreen) > ge)
- return false;
- if (abs(b - pixelBlue) > be)
- return false;
-
- return true;
- }
-
- }
-
- using rfb::makePixel;
- using rfb::verifyPixel;
-
- static bool testPixel(const rfb::PixelFormat &dstpf,
- const rfb::PixelFormat &srcpf)
- {
- rfb::Pixel p;
- rdr::U8 buffer[4];
-
- makePixel(srcpf, buffer);
-
- p = srcpf.pixelFromBuffer(buffer);
- p = dstpf.pixelFromPixel(srcpf, p);
- memset(buffer, 0, sizeof(buffer));
- dstpf.bufferFromPixel(buffer, p);
-
- if (!verifyPixel(dstpf, srcpf, buffer))
- return false;
-
- return true;
- }
-
- static bool testBuffer(const rfb::PixelFormat &dstpf,
- const rfb::PixelFormat &srcpf)
- {
- int i, x, y, unaligned;
- rdr::U8 bufIn[fbMalloc], bufOut[fbMalloc];
-
- // Once aligned, and once unaligned
- for (unaligned = 0;unaligned < 2;unaligned++) {
- for (i = 0;i < fbArea;i++)
- makePixel(srcpf, bufIn + unaligned + i*srcpf.bpp/8);
-
- memset(bufOut, 0, sizeof(bufOut));
- dstpf.bufferFromBuffer(bufOut + unaligned, srcpf,
- bufIn + unaligned, fbArea);
-
- for (i = 0;i < fbArea;i++) {
- if (!verifyPixel(dstpf, srcpf, bufOut + unaligned + i*dstpf.bpp/8))
- return false;
- }
-
- memset(bufIn, 0, sizeof(bufIn));
- for (y = 0;y < fbHeight;y++) {
- for (x = 0;x < fbWidth/2;x++)
- makePixel(srcpf, bufIn + unaligned + (x + y*fbWidth)*srcpf.bpp/8);
- }
-
- memset(bufOut, 0, sizeof(bufOut));
- dstpf.bufferFromBuffer(bufOut + unaligned, srcpf, bufIn + unaligned,
- fbWidth/2, fbHeight, fbWidth, fbWidth);
-
- for (y = 0;y < fbHeight;y++) {
- for (x = 0;x < fbWidth;x++) {
- if (x < fbWidth/2) {
- if (!verifyPixel(dstpf, srcpf,
- bufOut + unaligned + (x + y*fbWidth)*dstpf.bpp/8))
- return false;
- } else {
- const rdr::U8 zero[4] = { 0, 0, 0, 0 };
- if (memcmp(bufOut + unaligned + (x + y*fbWidth)*dstpf.bpp/8, zero,
- dstpf.bpp/8) != 0)
- return false;
- }
- }
- }
- }
-
- return true;
- }
-
- static bool testRGB(const rfb::PixelFormat &dstpf,
- const rfb::PixelFormat &srcpf)
- {
- int i, x, y, unaligned;
- rdr::U8 bufIn[fbMalloc], bufRGB[fbMalloc], bufOut[fbMalloc];
-
- // Once aligned, and once unaligned
- for (unaligned = 0;unaligned < 2;unaligned++) {
- for (i = 0;i < fbArea;i++)
- makePixel(srcpf, bufIn + unaligned + i*srcpf.bpp/8);
-
- memset(bufRGB, 0, sizeof(bufRGB));
- srcpf.rgbFromBuffer(bufRGB + unaligned, bufIn + unaligned, fbArea);
-
- memset(bufOut, 0, sizeof(bufOut));
- dstpf.bufferFromRGB(bufOut + unaligned, bufRGB + unaligned, fbArea);
-
- for (i = 0;i < fbArea;i++) {
- if (!verifyPixel(dstpf, srcpf, bufOut + unaligned + i*dstpf.bpp/8))
- return false;
- }
-
- memset(bufIn, 0, sizeof(bufIn));
- for (y = 0;y < fbHeight;y++) {
- for (x = 0;x < fbWidth/2;x++)
- makePixel(srcpf, bufIn + unaligned + (x + y*fbWidth)*srcpf.bpp/8);
- }
-
- memset(bufRGB, 0, sizeof(bufRGB));
- srcpf.rgbFromBuffer(bufRGB + unaligned, bufIn + unaligned,
- fbWidth/2, fbWidth, fbHeight);
-
- memset(bufOut, 0, sizeof(bufOut));
- dstpf.bufferFromRGB(bufOut + unaligned, bufRGB + unaligned,
- fbWidth/2, fbWidth, fbHeight);
-
- for (y = 0;y < fbHeight;y++) {
- for (x = 0;x < fbWidth;x++) {
- if (x < fbWidth/2) {
- if (!verifyPixel(dstpf, srcpf,
- bufOut + unaligned + (x + y*fbWidth)*dstpf.bpp/8))
- return false;
- } else {
- const rdr::U8 zero[4] = { 0, 0, 0, 0 };
- if (memcmp(bufOut + unaligned + (x + y*fbWidth)*dstpf.bpp/8, zero,
- dstpf.bpp/8) != 0)
- return false;
- }
- }
- }
- }
-
- return true;
- }
-
- static bool testPixelRGB(const rfb::PixelFormat &dstpf,
- const rfb::PixelFormat &srcpf)
- {
- rfb::Pixel p;
- rdr::U16 r16, g16, b16;
- rdr::U8 r8, g8, b8;
- rdr::U8 buffer[4];
-
- makePixel(srcpf, buffer);
-
- p = srcpf.pixelFromBuffer(buffer);
- srcpf.rgbFromPixel(p, &r16, &g16, &b16);
- p = dstpf.pixelFromRGB(r16, g16, b16);
- memset(buffer, 0, sizeof(buffer));
- dstpf.bufferFromPixel(buffer, p);
-
- if (!verifyPixel(dstpf, srcpf, buffer))
- return false;
-
- makePixel(srcpf, buffer);
-
- p = srcpf.pixelFromBuffer(buffer);
- srcpf.rgbFromPixel(p, &r8, &g8, &b8);
- p = dstpf.pixelFromRGB(r8, g8, b8);
- memset(buffer, 0, sizeof(buffer));
- dstpf.bufferFromPixel(buffer, p);
-
- if (!verifyPixel(dstpf, srcpf, buffer))
- return false;
-
- return true;
- }
-
- struct TestEntry tests[] = {
- {"Pixel from pixel", testPixel},
- {"Buffer from buffer", testBuffer},
- {"Buffer to/from RGB", testRGB},
- {"Pixel to/from RGB", testPixelRGB},
- };
-
- static void doTests(const rfb::PixelFormat &dstpf,
- const rfb::PixelFormat &srcpf)
- {
- size_t i;
- char dstb[256], srcb[256];
-
- dstpf.print(dstb, sizeof(dstb));
- srcpf.print(srcb, sizeof(srcb));
-
- printf("\n");
- printf("%s to %s\n", srcb, dstb);
- printf("\n");
-
- for (i = 0;i < sizeof(tests)/sizeof(tests[0]);i++) {
- printf(" %s: ", tests[i].label);
- fflush(stdout);
- if (tests[i].fn(dstpf, srcpf))
- printf("OK");
- else
- printf("FAILED");
- printf("\n");
- }
- }
-
- int main(int argc, char **argv)
- {
- rfb::PixelFormat dstpf, srcpf;
-
- printf("Pixel Conversion Correctness Test\n");
-
- /* rgb888 targets */
-
- dstpf.parse("rgb888");
-
- srcpf.parse("rgb888");
- doTests(dstpf, srcpf);
-
- srcpf.parse("bgr888");
- doTests(dstpf, srcpf);
-
- srcpf.parse("rgb565");
- doTests(dstpf, srcpf);
-
- srcpf.parse("rgb232");
- doTests(dstpf, srcpf);
-
- /* rgb565 targets */
-
- dstpf.parse("rgb565");
-
- srcpf.parse("rgb888");
- doTests(dstpf, srcpf);
-
- srcpf.parse("bgr565");
- doTests(dstpf, srcpf);
-
- srcpf.parse("rgb232");
- doTests(dstpf, srcpf);
-
- /* rgb232 targets */
-
- dstpf.parse("rgb232");
-
- srcpf.parse("rgb888");
- doTests(dstpf, srcpf);
-
- srcpf.parse("rgb565");
- doTests(dstpf, srcpf);
-
- srcpf.parse("bgr232");
- doTests(dstpf, srcpf);
-
- /* endian conversion (both ways) */
-
- dstpf = rfb::PixelFormat(32, 24, false, true, 255, 255, 255, 0, 8, 16);
- srcpf = rfb::PixelFormat(32, 24, true, true, 255, 255, 255, 0, 8, 16);
-
- doTests(dstpf, srcpf);
-
- doTests(srcpf, dstpf);
-
- dstpf = rfb::PixelFormat(16, 16, false, true, 31, 63, 31, 0, 5, 11);
- srcpf = rfb::PixelFormat(16, 16, true, true, 31, 63, 31, 0, 5, 11);
-
- doTests(dstpf, srcpf);
-
- doTests(srcpf, dstpf);
-
- // Pesky case that is very asymetrical
- dstpf = rfb::PixelFormat(32, 24, false, true, 255, 255, 255, 0, 8, 16);
- srcpf = rfb::PixelFormat(32, 24, true, true, 255, 255, 255, 0, 24, 8);
-
- doTests(dstpf, srcpf);
-
- doTests(srcpf, dstpf);
- }
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