public static void Expand(CompressionHeader *header, VoidPtr dstAddr, int dstLen)
{
switch (header->Algorithm)
{
case CompressionType.LZ77:
case CompressionType.ExtendedLZ77:
{
LZ77.Expand(header, dstAddr, dstLen);
break;
}
case CompressionType.RunLength:
{
RunLength.Expand(header, dstAddr, dstLen);
break;
}
//case CompressionType.Huffman: { Huffman.Expand(header, dstAddr, dstLen); break; }
//case CompressionType.Differential: { Differential.Expand(header, dstAddr, dstLen); break; }
default:
throw new InvalidCompressionException("Unknown compression type.");
}
}
public static unsafe void Compact(CompressionType type, VoidPtr srcAddr, int srcLen, Stream outStream,
ResourceNode r)
{
switch (type)
{
case CompressionType.LZ77:
{
LZ77.Compact(srcAddr, srcLen, outStream, r, false);
break;
}
case CompressionType.ExtendedLZ77:
{
LZ77.Compact(srcAddr, srcLen, outStream, r, true);
break;
}
case CompressionType.RunLength:
{
RunLength.Compact(srcAddr, srcLen, outStream, r);
break;
}
case CompressionType.RunLengthYAZ0:
{
RunLength.CompactYAZ0(srcAddr, srcLen, outStream, r);
break;
}
case CompressionType.RunLengthYAY0:
{
RunLength.CompactYAY0(srcAddr, srcLen, outStream, r);
break;
}
}
}
private void recompressToolStripMenuItem_Click(object sender, EventArgs e)
{
// Set bit depth correctly
var bitDepth = ImageCompression.ColorModel.RGB.ColorDepth.TwentyFour;
if (this.compressionFlags.FlagIsSet((byte)CompressionFlags.EightBit))
{
bitDepth = ImageCompression.ColorModel.RGB.ColorDepth.Eight;
}
else if (this.compressionFlags.FlagIsSet((byte)CompressionFlags.FifteenBit))
{
bitDepth = ImageCompression.ColorModel.RGB.ColorDepth.Fifteen;
}
else if (this.compressionFlags.FlagIsSet((byte)CompressionFlags.EighteenBit))
{
bitDepth = ImageCompression.ColorModel.RGB.ColorDepth.Eighteen;
}
else if (this.compressionFlags.FlagIsSet((byte)CompressionFlags.TwentyFourBit))
{
bitDepth = ImageCompression.ColorModel.RGB.ColorDepth.TwentyFour;
}
// Re-Load the modified data
this.modifiedData.data = this.originalImage.GetPixelMatrix(bitDepth);
ImageCompression.Interfaces.IEncodable[] data = this.modifiedData.data.Flatten();
// If huffman is enabled
if (this.compressionFlags.FlagIsSet((byte)CompressionFlags.Huffman))
{
var huffmanData = Huffman <ImageCompression.Interfaces.IEncodable> .Encode(data);
}
// If run length is enabled
if (this.compressionFlags.FlagIsSet((byte)CompressionFlags.RunLength))
{
data = RunLength.Encode <ImageCompression.Interfaces.IEncodable>(data);
}
// If LZ77 is enabled
if (this.compressionFlags.FlagIsSet((byte)CompressionFlags.LZ77))
{
var encodedData = LZ77.Encode(data, 255, 255);
data = encodedData.ToArray <ImageCompression.Interfaces.IEncodable>();
}
// Pack the bytes
this.compressedForm = ImageCompression.Helpers.BytePacker.Pack(data.ToList());
// Update compressed size
this.compressedSizeLabelBytes.Text = ((this.compressedForm.Length + this.compressionFlags) / 1024) + " KB";
// Update compression radio
this.compressionRatio.Text = this.CalculateCompressionRatio(
int.Parse(this.originalSizeLabelBytes.Text.Substring(0, this.originalSizeLabelBytes.Text.Length - 3)),
int.Parse(this.compressedSizeLabelBytes.Text.Substring(0, this.originalSizeLabelBytes.Text.Length - 3)));
// Update MSE
this.meanSquaredError.Text = this.originalImage.MeanSquaredError(this.modifiedData.data).ToString();
// Update the preview tab with the preview data
if (this.compressedPictureBox.Image != null)
{
this.compressedPictureBox.Image.Dispose();
this.compressedImage.Dispose();
}
// Save the modified data as a temporary image
var modifiedBitmap = this.modifiedData.GetBitmap();
modifiedBitmap.Save(@"D:\GitHub\SE3IA11-Image-Analysis\ImageCompression\TestImage\Output\temp.bmp", System.Drawing.Imaging.ImageFormat.Bmp);
this.compressedImage = new StandardImage(new Bitmap(@"D:\GitHub\SE3IA11-Image-Analysis\ImageCompression\TestImage\Output\temp.bmp"));
this.compressedPictureBox.Image = this.compressedImage.GetBitmap();
}
public static void Expand(YAY0 *header, VoidPtr dstAddr, int dstLen)
{
RunLength.ExpandYAY0(header, dstAddr, dstLen);
}
