private Image BeginVilenkinCompress()
{
p = new List <int>();
ArrayUtils.Fill(p, int.Parse(p_textBox.Text), 30);
Timer timer = Timer.GetInstance();
timer.Clear();
if (vilenkin == null)
{
timer.Start(MAIN, PREPARATION);
vilenkin = new VilenkinTransform(p, int.Parse(N_textBox.Text) - 1);
timer.End(MAIN, PREPARATION);
}
blockSize = vilenkin.GetBlockSize();
chunkSize = blockSize * 2;
var originalWidth = sourceImageBox.Image.Width;
var originalHeight = sourceImageBox.Image.Height;
var rgbImage = new RGBImage(sourceImageBox.Image);
var fittedToChunksImage = ImageUtils.FitToBlockSize(rgbImage, chunkSize);
var chunks = fittedToChunksImage.ToBlockArray(chunkSize, out int widthBlocks, out int heightBlocks);
var vilenkinChunks = new VilenkinChunk[chunks.Length];
var parallelOptions = new ParallelOptions()
{
MaxDegreeOfParallelism = 4
};
timer.Start(MAIN, TRANSFORM);
var flag = Parallel.ForEach(chunks, parallelOptions, (elem, loopState, elementIndex) => {
var vilenkinChunk = new VilenkinChunk(vilenkin, new Chunk(chunks[elementIndex], blockSize));
vilenkinChunk.ZeroCoeffs(zeroPercentY, zeroPercentCb, zeroPercentCr);
vilenkinChunks[elementIndex] = vilenkinChunk;
});
while (!flag.IsCompleted)
{
;
}
timer.End(MAIN, TRANSFORM);
foreach (VilenkinChunk chunk in vilenkinChunks)
{
coeffsCount += chunk.CoeffsCount();
zeroCoeffsCount += chunk.ZeroCoeffsCount();
}
var listOfDecompressedImages = new YCbCrImage[vilenkinChunks.Length];
var listOfDecompressedChunks = new Chunk[vilenkinChunks.Length];
var matrix = new YCbCrImage[widthBlocks, heightBlocks];
timer.Start(MAIN, REVERSE_TRANSFORM);
flag = Parallel.ForEach(vilenkinChunks, parallelOptions, (elem, loopState, i) => {
listOfDecompressedChunks[i] = new Chunk(vilenkinChunks[i], vilenkin);
listOfDecompressedImages[i] = YCbCrImage.FromChunk(listOfDecompressedChunks[i]);
var j = i / widthBlocks;
matrix[i - j * widthBlocks, j] = listOfDecompressedImages[i];
});
while (!flag.IsCompleted)
{
;
}
timer.End(MAIN, REVERSE_TRANSFORM);
timer.DisplayIntervals();
var decompressedImage = YCbCrImage.FromMatrix(matrix).ToRGBImage(originalWidth, originalHeight);
return(decompressedImage.ToImage());
}
private void p_textBox_TextChanged(object sender, EventArgs e)
{
p = new List <int>();
ArrayUtils.Fill(p, int.Parse(p_textBox.Text), 10);
vilenkin = null;
}
public override string ToString()
{
return(ArrayUtils.ArrayToString(p, "p") + ArrayUtils.ArrayToString(m, "m"));
}