public Bitmap[] load(Stream stream)
{
BinaryReader binaryReader = new BinaryReader(stream);
if (binaryReader.ReadChar() != id)
{
//
}
width = binaryReader.ReadInt32();
height = binaryReader.ReadInt32();
//intra frame
int count = binaryReader.ReadInt32();
YEncode = new List <byte>(binaryReader.ReadBytes(count));
count = binaryReader.ReadInt32();
CbEncode = new List <byte>(binaryReader.ReadBytes(count));
count = binaryReader.ReadInt32();
CrEncode = new List <byte>(binaryReader.ReadBytes(count));
//inter frame
count = binaryReader.ReadInt32();
YEncodeInter = new List <byte>(binaryReader.ReadBytes(count));
count = binaryReader.ReadInt32();
CbEncodeInter = new List <byte>(binaryReader.ReadBytes(count));
count = binaryReader.ReadInt32();
CrEncodeInter = new List <byte>(binaryReader.ReadBytes(count));
//motion vector
int x = binaryReader.ReadInt32();
int y = binaryReader.ReadInt32();
YMoVec = new Point[x, y];
for (int i = 0; i < x; i++)
{
for (int j = 0; j < y; j++)
{
YMoVec[i, j].X = binaryReader.ReadSByte();
YMoVec[i, j].Y = binaryReader.ReadSByte();
}
}
x = binaryReader.ReadInt32();
y = binaryReader.ReadInt32();
CbMoVec = new Point[x, y];
for (int i = 0; i < x; i++)
{
for (int j = 0; j < y; j++)
{
CbMoVec[i, j].X = binaryReader.ReadSByte();
CbMoVec[i, j].Y = binaryReader.ReadSByte();
}
}
x = binaryReader.ReadInt32();
y = binaryReader.ReadInt32();
CrMoVec = new Point[x, y];
for (int i = 0; i < x; i++)
{
for (int j = 0; j < y; j++)
{
CrMoVec[i, j].X = binaryReader.ReadSByte();
CrMoVec[i, j].Y = binaryReader.ReadSByte();
}
}
Bitmap[] ret = new Bitmap[2];
ret[0] = new Bitmap(width, height);
ret[1] = new Bitmap(width, height);
//decode intra frame
YQuant = decoding(YEncode, width, height);
CbQuant = decoding(CbEncode, width / 2, height / 2);
CrQuant = decoding(CrEncode, width / 2, height / 2);
YDCT = invQuantization(YQuant);
CbDCT = invQuantization(CbQuant);
CrDCT = invQuantization(CrQuant);
Y = inverseDCT(YDCT, width, height);
Cb = inverseDCT(CbDCT, Cb.GetLength(0), Cb.GetLength(1));
Cr = inverseDCT(CrDCT, Cr.GetLength(0), Cr.GetLength(1));
unsubSampling(ref Cb, ref Cr);
YCbCrtoRGB(ret[0], Y, Cb, Cr);
//decode inter frame
subSampling(ref Cb, ref Cr);
YQuantInter = decoding(YEncodeInter, width, height);
CbQuantInter = decoding(CbEncodeInter, width / 2, height / 2);
CrQuantInter = decoding(CrEncodeInter, width / 2, height / 2);
YDCTInter = invQuantization(YQuantInter);
CbDCTInter = invQuantization(CbQuantInter);
CrDCTInter = invQuantization(CrQuantInter);
YDif = inverseDCTInter(YDCTInter, width, height);
CbDif = inverseDCTInter(CbDCTInter, CbInter.GetLength(0), CbInter.GetLength(1));
CrDif = inverseDCTInter(CrDCTInter, CrInter.GetLength(0), CrInter.GetLength(1));
YInter = unCalcDifference(Y, YMoVec, YDif);
CbInter = unCalcDifference(Cb, CbMoVec, CbDif);
CrInter = unCalcDifference(Cr, CrMoVec, CrDif);
unsubSampling(ref CbInter, ref CrInter);
YCbCrtoRGB(ret[1], YInter, CbInter, CrInter);
return(ret);
}
