public void EncodeFourBlocksPureBlackRGBThenDecodeIt()
{
// Arrange
const int width = 8; // One block is 4x4, so 8x8 is 4 blocks
const int height = 8;
const int channelsPerPixel = 3;
byte[] blackRGB = new byte[] { 0, 0, 0 };
byte[,,] pixels = new byte[width, height, channelsPerPixel] {
{ { 0, 0, 0 }, { 0, 0, 0 }, { 0, 0, 0 }, { 0, 0, 0 }, { 0, 0, 0 }, { 0, 0, 0 }, { 0, 0, 0 }, { 0, 0, 0 } },
{ { 0, 0, 0 }, { 0, 0, 0 }, { 0, 0, 0 }, { 0, 0, 0 }, { 0, 0, 0 }, { 0, 0, 0 }, { 0, 0, 0 }, { 0, 0, 0 } },
{ { 0, 0, 0 }, { 0, 0, 0 }, { 0, 0, 0 }, { 0, 0, 0 }, { 0, 0, 0 }, { 0, 0, 0 }, { 0, 0, 0 }, { 0, 0, 0 } },
{ { 0, 0, 0 }, { 0, 0, 0 }, { 0, 0, 0 }, { 0, 0, 0 }, { 0, 0, 0 }, { 0, 0, 0 }, { 0, 0, 0 }, { 0, 0, 0 } },
{ { 0, 0, 0 }, { 0, 0, 0 }, { 0, 0, 0 }, { 0, 0, 0 }, { 0, 0, 0 }, { 0, 0, 0 }, { 0, 0, 0 }, { 0, 0, 0 } },
{ { 0, 0, 0 }, { 0, 0, 0 }, { 0, 0, 0 }, { 0, 0, 0 }, { 0, 0, 0 }, { 0, 0, 0 }, { 0, 0, 0 }, { 0, 0, 0 } },
{ { 0, 0, 0 }, { 0, 0, 0 }, { 0, 0, 0 }, { 0, 0, 0 }, { 0, 0, 0 }, { 0, 0, 0 }, { 0, 0, 0 }, { 0, 0, 0 } },
{ { 0, 0, 0 }, { 0, 0, 0 }, { 0, 0, 0 }, { 0, 0, 0 }, { 0, 0, 0 }, { 0, 0, 0 }, { 0, 0, 0 }, { 0, 0, 0 } },
};
TempByteImageFormat image = new TempByteImageFormat(pixels);
// Act
byte[] encodedBytes = PvrtcCompress.EncodeRgb4Bpp(image);
TempByteImageFormat decoded = PvrtcDecompress.DecodeRgb4Bpp(encodedBytes, width);
byte[] firstPixel = decoded.GetPixelChannels(0, 0);
// Assert
Assert.AreEqual(32, encodedBytes.Length);
Assert.AreEqual(width, decoded.GetWidth());
Assert.AreEqual(height, decoded.GetHeight());
Assert.AreEqual(channelsPerPixel, decoded.GetChannelsPerPixel());
CollectionAssert.AreEqual(blackRGB, firstPixel);
}
public void EncodeOneBlockPureWhiteRGBAThenDecodeIt()
{
// Arrange
const int width = 4; // One block is 4x4
const int height = 4;
const int channelsPerPixel = 4;
byte[] whiteRGBA = new byte[] { 255, 255, 255, 255 };
byte[,,] pixels = new byte[width, height, channelsPerPixel] {
{ { 255, 255, 255, 255 }, { 255, 255, 255, 255 }, { 255, 255, 255, 255 }, { 255, 255, 255, 255 } },
{ { 255, 255, 255, 255 }, { 255, 255, 255, 255 }, { 255, 255, 255, 255 }, { 255, 255, 255, 255 } },
{ { 255, 255, 255, 255 }, { 255, 255, 255, 255 }, { 255, 255, 255, 255 }, { 255, 255, 255, 255 } },
{ { 255, 255, 255, 255 }, { 255, 255, 255, 255 }, { 255, 255, 255, 255 }, { 255, 255, 255, 255 } },
};
TempByteImageFormat image = new TempByteImageFormat(pixels);
// Act
byte[] encodedBytes = PvrtcCompress.EncodeRgba4Bpp(image);
TempByteImageFormat decoded = PvrtcDecompress.DecodeRgba4Bpp(encodedBytes, width);
byte[] firstPixel = decoded.GetPixelChannels(0, 0);
// Assert
Assert.AreEqual(8, encodedBytes.Length);
Assert.AreEqual(width, decoded.GetWidth());
Assert.AreEqual(height, decoded.GetHeight());
Assert.AreEqual(channelsPerPixel, decoded.GetChannelsPerPixel());
CollectionAssert.AreEqual(whiteRGBA, firstPixel);
}
public void DecodeFile()
{
// Arrange
FileStream pvrStream = new FileStream("hotair.4bpp.pvr", FileMode.Open, FileAccess.Read);
byte[] array = new byte[512 * 512 / 2];
// Act
pvrStream.Seek(0x44, SeekOrigin.Begin);
pvrStream.Read(array, 0, array.Length);
TempByteImageFormat temp = PvrtcDecompress.DecodeRgb4Bpp(array, 512);
// Assert
}
public void DecodeRGBTextureFromByteArray()
{
// Arrange
byte[] input = new byte[8] {
0, 0, 0, 0, 254, 255, 255, 255
};
int width = 4;
byte[] whiteRGB = new byte[] { 255, 255, 255 };
// Act
TempByteImageFormat temp = PvrtcDecompress.DecodeRgb4Bpp(input, width);
byte[] firstPixel = temp.GetPixelChannels(0, 0);
// Assert
CollectionAssert.AreEqual(whiteRGB, firstPixel);
}
