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Diffstat (limited to 'gfx/tests/gtest/TestBufferRotation.cpp')
| -rw-r--r-- | gfx/tests/gtest/TestBufferRotation.cpp | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/gfx/tests/gtest/TestBufferRotation.cpp b/gfx/tests/gtest/TestBufferRotation.cpp new file mode 100644 index 0000000000..871295e68c --- /dev/null +++ b/gfx/tests/gtest/TestBufferRotation.cpp @@ -0,0 +1,162 @@ +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* vim: set ts=8 sts=2 et sw=2 tw=80: */ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#include "gtest/gtest.h" + +#include "BufferUnrotate.h" + +using mozilla::gfx::BufferUnrotate; + +static unsigned char* GenerateBuffer(int bytesPerPixel, int width, int height, + int stride, int xBoundary, int yBoundary) { + unsigned char* buffer = new unsigned char[stride * height]; + for (int y = 0; y < height; y++) { + for (int x = 0; x < width; x++) { + int pos = ((yBoundary + y) % height) * stride + + ((xBoundary + x) % width) * bytesPerPixel; + for (int i = 0; i < bytesPerPixel; i++) { + buffer[pos + i] = (x + y + i * 2) % 256; + } + } + } + return buffer; +} + +static bool CheckBuffer(unsigned char* buffer, int bytesPerPixel, int width, + int height, int stride) { + int xBoundary = 0; + int yBoundary = 0; + for (int y = 0; y < height; y++) { + for (int x = 0; x < width; x++) { + int pos = ((yBoundary + y) % height) * stride + + ((xBoundary + x) % width) * bytesPerPixel; + for (int i = 0; i < bytesPerPixel; i++) { + if (buffer[pos + i] != (x + y + i * 2) % 256) { + printf("Buffer differs at %i, %i, is %i\n", x, y, + (int)buffer[pos + i]); + return false; + } + } + } + } + return true; +} + +TEST(Gfx, BufferUnrotateHorizontal) +{ + const int NUM_OF_TESTS = 8; + int bytesPerPixelList[2] = {2, 4}; + int width[NUM_OF_TESTS] = {100, 100, 99, 99, 100, 100, 99, 99}; + int height[NUM_OF_TESTS] = {100, 99, 100, 99, 100, 99, 100, 99}; + int xBoundary[NUM_OF_TESTS] = {30, 30, 30, 30, 31, 31, 31, 31}; + int yBoundary[NUM_OF_TESTS] = {0, 0, 0, 0}; + + for (int bytesPerId = 0; bytesPerId < 2; bytesPerId++) { + int bytesPerPixel = bytesPerPixelList[bytesPerId]; + int stride = 256 * bytesPerPixel; + for (int testId = 0; testId < NUM_OF_TESTS; testId++) { + unsigned char* buffer = + GenerateBuffer(bytesPerPixel, width[testId], height[testId], stride, + xBoundary[testId], yBoundary[testId]); + BufferUnrotate(buffer, width[testId] * bytesPerPixel, height[testId], + stride, xBoundary[testId] * bytesPerPixel, + yBoundary[testId]); + + EXPECT_TRUE(CheckBuffer(buffer, bytesPerPixel, width[testId], + height[testId], stride)); + delete[] buffer; + } + } +} + +TEST(Gfx, BufferUnrotateVertical) +{ + const int NUM_OF_TESTS = 8; + int bytesPerPixelList[2] = {2, 4}; + int width[NUM_OF_TESTS] = {100, 100, 99, 99, 100, 100, 99, 99}; + int height[NUM_OF_TESTS] = {100, 99, 100, 99, 100, 99, 100, 99}; + int xBoundary[NUM_OF_TESTS] = {0, 0, 0, 0}; + int yBoundary[NUM_OF_TESTS] = {30, 30, 30, 30, 31, 31, 31, 31}; + + for (int bytesPerId = 0; bytesPerId < 2; bytesPerId++) { + int bytesPerPixel = bytesPerPixelList[bytesPerId]; + int stride = 256 * bytesPerPixel; + for (int testId = 0; testId < NUM_OF_TESTS; testId++) { + unsigned char* buffer = + GenerateBuffer(bytesPerPixel, width[testId], height[testId], stride, + xBoundary[testId], yBoundary[testId]); + BufferUnrotate(buffer, width[testId] * bytesPerPixel, height[testId], + stride, xBoundary[testId] * bytesPerPixel, + yBoundary[testId]); + + EXPECT_TRUE(CheckBuffer(buffer, bytesPerPixel, width[testId], + height[testId], stride)); + delete[] buffer; + } + } +} + +TEST(Gfx, BufferUnrotateBoth) +{ + const int NUM_OF_TESTS = 16; + int bytesPerPixelList[2] = {2, 4}; + int width[NUM_OF_TESTS] = {100, 100, 99, 99, 100, 100, 99, 99, + 100, 100, 99, 99, 100, 100, 99, 99}; + int height[NUM_OF_TESTS] = {100, 99, 100, 99, 100, 99, 100, 99, + 100, 99, 100, 99, 100, 99, 100, 99}; + int xBoundary[NUM_OF_TESTS] = {30, 30, 30, 30, 31, 31, 31, 31, + 30, 30, 30, 30, 31, 31, 31, 31}; + int yBoundary[NUM_OF_TESTS] = {30, 30, 30, 30, 30, 30, 30, 30, + 31, 31, 31, 31, 31, 31, 31, 31}; + + for (int bytesPerId = 0; bytesPerId < 2; bytesPerId++) { + int bytesPerPixel = bytesPerPixelList[bytesPerId]; + int stride = 256 * bytesPerPixel; + for (int testId = 0; testId < NUM_OF_TESTS; testId++) { + unsigned char* buffer = + GenerateBuffer(bytesPerPixel, width[testId], height[testId], stride, + xBoundary[testId], yBoundary[testId]); + BufferUnrotate(buffer, width[testId] * bytesPerPixel, height[testId], + stride, xBoundary[testId] * bytesPerPixel, + yBoundary[testId]); + + EXPECT_TRUE(CheckBuffer(buffer, bytesPerPixel, width[testId], + height[testId], stride)); + delete[] buffer; + } + } +} + +TEST(Gfx, BufferUnrotateUneven) +{ + const int NUM_OF_TESTS = 16; + int bytesPerPixelList[2] = {2, 4}; + int width[NUM_OF_TESTS] = {10, 100, 99, 39, 100, 40, 99, 39, + 100, 50, 39, 99, 74, 60, 99, 39}; + int height[NUM_OF_TESTS] = {100, 39, 10, 99, 10, 99, 40, 99, + 73, 39, 100, 39, 67, 99, 84, 99}; + int xBoundary[NUM_OF_TESTS] = {0, 0, 30, 30, 99, 31, 0, 31, + 30, 30, 30, 30, 31, 31, 31, 38}; + int yBoundary[NUM_OF_TESTS] = {30, 30, 0, 30, 0, 30, 0, 30, + 31, 31, 31, 31, 31, 31, 31, 98}; + + for (int bytesPerId = 0; bytesPerId < 2; bytesPerId++) { + int bytesPerPixel = bytesPerPixelList[bytesPerId]; + int stride = 256 * bytesPerPixel; + for (int testId = 0; testId < NUM_OF_TESTS; testId++) { + unsigned char* buffer = + GenerateBuffer(bytesPerPixel, width[testId], height[testId], stride, + xBoundary[testId], yBoundary[testId]); + BufferUnrotate(buffer, width[testId] * bytesPerPixel, height[testId], + stride, xBoundary[testId] * bytesPerPixel, + yBoundary[testId]); + + EXPECT_TRUE(CheckBuffer(buffer, bytesPerPixel, width[testId], + height[testId], stride)); + delete[] buffer; + } + } +} |