public void GetMetadataInfoFromNearLosslessEncodedColorImage()
{
var source = ReadAllBytes("T8C0E3.JLS");
var info = JpegLSCodec.GetMetadataInfo(source);
var expected = new JpegLSMetadataInfo {
Height = 256, Width = 256, BitsPerComponent = 8, ComponentCount = 3, AllowedLossyError = 3
};
Assert.AreEqual(expected, info);
}
public void Decompress()
{
var source = ReadAllBytes("T8C0E0.JLS");
var expected = ReadAllBytes("TEST8.PPM", 15);
var uncompressed = JpegLSCodec.Decompress(source);
var info = JpegLSCodec.GetMetadataInfo(source);
if (info.InterleaveMode == JpegLSInterleaveMode.None && info.ComponentCount == 3)
{
expected = TripletToPlanar(expected, info.Width, info.Height);
}
Assert.AreEqual(expected, uncompressed);
}
public void Compress()
{
var info = new JpegLSMetadataInfo(256, 256, 8, 3);
var uncompressedOriginal = ReadAllBytes("TEST8.PPM", 15);
uncompressedOriginal = TripletToPlanar(uncompressedOriginal, info.Width, info.Height);
var compressedSegment = JpegLSCodec.Compress(info, uncompressedOriginal);
var compressed = new byte[compressedSegment.Count];
Array.Copy(compressedSegment.Array, compressed, compressed.Length);
var compressedInfo = JpegLSCodec.GetMetadataInfo(compressed);
Assert.AreEqual(info, compressedInfo);
var uncompressed = JpegLSCodec.Decompress(compressed);
Assert.AreEqual(info.UncompressedSize, uncompressed.Length);
Assert.AreEqual(uncompressedOriginal, uncompressed);
}