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https://github.com/libretro/ppsspp.git
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77 lines
2.2 KiB
C++
77 lines
2.2 KiB
C++
// Copyright (c) 2012- PPSSPP Project.
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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, version 2.0 or later versions.
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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 2.0 for more details.
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// A copy of the GPL 2.0 should have been included with the program.
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// If not, see http://www.gnu.org/licenses/
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// Official git repository and contact information can be found at
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// https://github.com/hrydgard/ppsspp and http://www.ppsspp.org/.
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#include "Compare.h"
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#include "FileUtil.h"
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#include <math.h>
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bool CompareOutput(const std::string bootFilename)
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{
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std::string expect_filename = bootFilename.substr(bootFilename.length() - 4) + ".expected";
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if (File::Exists(expect_filename))
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{
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// TODO: Do the compare here
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return true;
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}
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else
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{
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fprintf(stderr, "Expectation file %s not found", expect_filename.c_str());
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return false;
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}
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}
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inline int ComparePixel(u32 pix1, u32 pix2)
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{
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// For now, if they're different at all except alpha, it's an error.
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if ((pix1 & 0xFFFFFF) != (pix2 & 0xFFFFFF))
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return 1;
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return 0;
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}
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double CompareScreenshot(const u8 *pixels, int w, int h, int stride, const std::string screenshotFilename, std::string &error)
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{
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u32 *pixels32 = (u32 *) pixels;
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// We assume the bitmap is the specified size, not including whatever stride.
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u32 *reference = (u32 *) calloc(w * h, sizeof(u32));
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FILE *bmp = fopen(screenshotFilename.c_str(), "rb");
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if (bmp)
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{
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// The bitmap header is 14 + 40 bytes. We could validate it but the test would fail either way.
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fseek(bmp, 14 + 40, SEEK_SET);
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fread(reference, sizeof(u32), w * h, bmp);
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fclose(bmp);
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}
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else
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{
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error = "Unable to read screenshot: " + screenshotFilename;
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free(reference);
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return -1.0f;
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}
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u32 errors = 0;
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for (int y = 0; y < h; ++y)
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{
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for (int x = 0; x < w; ++x)
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errors += ComparePixel(pixels32[y * stride + x], reference[y * w + x]);
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}
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free(reference);
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return (double) errors / (double) (w * h);
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} |