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/* -*- 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
#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;
}
}
}