pixel.test.cc

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/*
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 * Authors: Andreas Sandberg
 */

#include <gtest/gtest.h>

#include "base/pixel.hh"

static Pixel pixel_red(0xff, 0x00, 0x00);
static Pixel pixel_green(0x00, 0xff, 0x00);
static Pixel pixel_blue(0x00, 0x00, 0xff);

TEST(FBTest, PixelConversionRGBA8888)
{
    EXPECT_EQ(PixelConverter::rgba8888_le.fromPixel(pixel_red),
              0x000000ffU);
    EXPECT_EQ(PixelConverter::rgba8888_le.fromPixel(pixel_green),
              0x0000ff00U);
    EXPECT_EQ(PixelConverter::rgba8888_le.fromPixel(pixel_blue),
              0x00ff0000U);

    EXPECT_EQ(PixelConverter::rgba8888_le.toPixel(0x000000ffU),
              pixel_red);
    EXPECT_EQ(PixelConverter::rgba8888_le.toPixel(0x0000ff00U),
              pixel_green);
    EXPECT_EQ(PixelConverter::rgba8888_le.toPixel(0x00ff0000U),
              pixel_blue);
}

TEST(FBTest, PixelConversionRGB565)
{
    EXPECT_EQ(PixelConverter::rgb565_le.fromPixel(pixel_red),   0x001fU);
    EXPECT_EQ(PixelConverter::rgb565_le.fromPixel(pixel_green), 0x07e0U);
    EXPECT_EQ(PixelConverter::rgb565_le.fromPixel(pixel_blue),  0xf800U);

    EXPECT_EQ(PixelConverter::rgb565_le.toPixel(0x001fU), pixel_red);
    EXPECT_EQ(PixelConverter::rgb565_le.toPixel(0x07e0U), pixel_green);
    EXPECT_EQ(PixelConverter::rgb565_le.toPixel(0xf800U), pixel_blue);
}

TEST(FBTest, PixelToMemRGBA8888LE)
{
    uint8_t data[] = { 0xde, 0xad, 0xbe, 0xef };
    PixelConverter::rgba8888_le.fromPixel(data, pixel_red);
    EXPECT_EQ(data[0], 0xff);
    EXPECT_EQ(data[1], 0x00);
    EXPECT_EQ(data[3], 0x00);
    EXPECT_EQ(data[3], 0x00);
    EXPECT_EQ(PixelConverter::rgba8888_le.toPixel(data), pixel_red);

    PixelConverter::rgba8888_le.fromPixel(data, pixel_green);
    EXPECT_EQ(data[0], 0x00);
    EXPECT_EQ(data[1], 0xff);
    EXPECT_EQ(data[3], 0x00);
    EXPECT_EQ(data[3], 0x00);
    EXPECT_EQ(PixelConverter::rgba8888_le.toPixel(data), pixel_green);

    PixelConverter::rgba8888_le.fromPixel(data, pixel_blue);
    EXPECT_EQ(data[0], 0x00);
    EXPECT_EQ(data[1], 0x00);
    EXPECT_EQ(data[2], 0xff);
    EXPECT_EQ(data[3], 0x00);
    EXPECT_EQ(PixelConverter::rgba8888_le.toPixel(data), pixel_blue);
}

TEST(FBTest, MemToPixelRGBA8888LE)
{
    uint8_t red[] = { 0xff, 0x00, 0x00, 0x00 };
    uint8_t green[] = { 0x00, 0xff, 0x00, 0x00 };
    uint8_t blue[] = { 0x00, 0x00, 0xff, 0x00 };

    EXPECT_EQ(PixelConverter::rgba8888_le.toPixel(red), pixel_red);
    EXPECT_EQ(PixelConverter::rgba8888_le.toPixel(green), pixel_green);
    EXPECT_EQ(PixelConverter::rgba8888_le.toPixel(blue), pixel_blue);
}

TEST(FBTest, MemToPixelRGBA8888BE)
{
    uint8_t red[] = { 0x00, 0x00, 0x00, 0xff };
    uint8_t green[] = { 0x00, 0x00, 0xff, 0x00 };
    uint8_t blue[] = { 0x00, 0xff, 0x00, 0x00 };

    EXPECT_EQ(PixelConverter::rgba8888_be.toPixel(red), pixel_red);
    EXPECT_EQ(PixelConverter::rgba8888_be.toPixel(green), pixel_green);
    EXPECT_EQ(PixelConverter::rgba8888_be.toPixel(blue), pixel_blue);
}