public static void SaveAsFile(string sFile, ref int[,] rgbArray, int width, int height, int quality)
{
int size = width * height;
int numRemainingY = quality * size / 100;
int numRemainingCg = quality * size / 25;
int numRemainingCo = quality * size / 25;
int newWidth, newHeight;
// int[,] rgbArray = new int[width, height];
// RGBColor.FillRGBArrayFromBitmap(bmp, ref rgbArray);
FileStream fs = new FileStream(sFile, FileMode.Create, FileAccess.Write, FileShare.None);
MemoryStream ms = new MemoryStream();
newWidth = IntegerMath.ToPowerOf2(width);
newHeight = IntegerMath.ToPowerOf2(height);
float[,] imgOrgY = new float[width, height];
float[,] imgOrgCg = new float[width, height];
float[,] imgOrgCo = new float[width, height];
float[,] imgY = new float[newWidth, newHeight];
float[,] imgCg = new float[newWidth, newHeight];
float[,] imgCo = new float[newWidth, newHeight];
int[,] imgIY = new int[newWidth, newHeight];
int[,] imgICg = new int[newWidth, newHeight];
int[,] imgICo = new int[newWidth, newHeight];
//YCgCoColor.RGBArrayToYCgCoArrays(ref rgbArray, width, height, ref imgOrgY, ref imgOrgCg, ref imgOrgCo);
YCbCrColor.RGBArrayToYCbCrArrays(ref rgbArray, width, height, ref imgOrgY, ref imgOrgCg, ref imgOrgCo);
ArrayHelper2D.ResizeArray2D(ref imgOrgY, ref imgY, width, height, newWidth, newHeight, ArrayHelper2D.ResizeFilter.NONE_CLAMP);
ArrayHelper2D.ResizeArray2D(ref imgOrgCg, ref imgCg, width, height, newWidth, newHeight, ArrayHelper2D.ResizeFilter.NONE_CLAMP);
ArrayHelper2D.ResizeArray2D(ref imgOrgCo, ref imgCo, width, height, newWidth, newHeight, ArrayHelper2D.ResizeFilter.NONE_CLAMP);
Biorthogonal53Wavelet2D wavelet = new Biorthogonal53Wavelet2D(newWidth, newHeight, 8, 8, true);
wavelet.TransformIsotropic2D(ref imgY);
wavelet.TransformIsotropic2D(ref imgCg);
wavelet.TransformIsotropic2D(ref imgCo);
ArrayHelper2D.RemoveSmallestCoefficients2D(ref imgY, newWidth, newHeight, numRemainingY);
ArrayHelper2D.RemoveSmallestCoefficients2D(ref imgCg, newWidth, newHeight, numRemainingCg);
ArrayHelper2D.RemoveSmallestCoefficients2D(ref imgCo, newWidth, newHeight, numRemainingCo);
//simple quantification
float quant = 1.0f / (float)((100.0f - quality) + 1.0f);
for (int y = 0; y < newHeight; y++)
{
for (int x = 0; x < newWidth; x++)
{
imgY[x, y] *= quant;
imgCg[x, y] *= quant;
imgCo[x, y] *= quant;
}
}
ArrayHelper2D.ConvertFloatToInt(ref imgY, ref imgIY, newWidth, newHeight);
ArrayHelper2D.ConvertFloatToInt(ref imgCg, ref imgICg, newWidth, newHeight);
ArrayHelper2D.ConvertFloatToInt(ref imgCo, ref imgICo, newWidth, newHeight);
BinaryWriter writer = new BinaryWriter(ms);
writer.Write(width);
writer.Write(height);
writer.Write(quality);
for (int y = 0; y < newHeight; y++)
{
for (int x = 0; x < newWidth; x++)
{
writer.Write(imgIY[x, y]);
writer.Write(imgICg[x, y]);
writer.Write(imgICo[x, y]);
}
}
writer.Close();
byte[] buffer = ms.GetBuffer();
byte[] compressed = Memory.CompressBuffer(ref buffer);
fs.Write(compressed, 0, compressed.Length);
fs.Close();
}
public static int[,] LoadFromFile(string sFile, ref int width, ref int height)
{
FileStream fs = new FileStream(sFile, FileMode.Open, FileAccess.Read, FileShare.Read);
MemoryStream ms = new MemoryStream();
byte[] buffer = new byte[fs.Length];
fs.Read(buffer, 0, (int)fs.Length);
byte[] decompressed = Memory.DecompressBuffer(ref buffer);
ms.Write(decompressed, 0, (int)decompressed.Length);
ms.Seek(0, 0);
fs.Close();
BinaryReader br = new BinaryReader(ms);
//int width, height;
int newWidth, newHeight;
width = br.ReadInt32();
height = br.ReadInt32();
int quality = br.ReadInt32();
newWidth = IntegerMath.ToPowerOf2(width);
newHeight = IntegerMath.ToPowerOf2(height);
int[,] imgOrg = new int[width, height];
float[,] imgY = new float[newWidth, newHeight];
float[,] imgCg = new float[newWidth, newHeight];
float[,] imgCo = new float[newWidth, newHeight];
int[,] imgIY = new int[newWidth, newHeight];
int[,] imgICg = new int[newWidth, newHeight];
int[,] imgICo = new int[newWidth, newHeight];
for (int y = 0; y < newHeight; y++)
{
for (int x = 0; x < newWidth; x++)
{
imgIY[x, y] = br.ReadInt32();
imgICg[x, y] = br.ReadInt32();
imgICo[x, y] = br.ReadInt32();
}
}
br.Close();
ArrayHelper2D.ConvertIntToFloat(ref imgIY, ref imgY, newWidth, newHeight);
ArrayHelper2D.ConvertIntToFloat(ref imgICg, ref imgCg, newWidth, newHeight);
ArrayHelper2D.ConvertIntToFloat(ref imgICo, ref imgCo, newWidth, newHeight);
Biorthogonal53Wavelet2D wavelet = new Biorthogonal53Wavelet2D(newWidth, newHeight, 8, 8, true);
//revert simple quantification
float quant = (float)((100.0f - quality) + 1.0f);
for (int y = 0; y < newHeight; y++)
{
for (int x = 0; x < newWidth; x++)
{
imgY[x, y] *= quant;
imgCg[x, y] *= quant;
imgCo[x, y] *= quant;
}
}
wavelet.BackTransformIsotropic2D(ref imgY);
wavelet.BackTransformIsotropic2D(ref imgCg);
wavelet.BackTransformIsotropic2D(ref imgCo);
YCbCrColor.YCbCrArraysToRGBArray(ref imgY, ref imgCg, ref imgCo, width, height, ref imgOrg);
return(imgOrg);
//return RGBColor.CreateBitmapFromRGBArray(ref imgOrg, width, height);
}
