private int[] HuffmanDecoding(List <int> list, Dictionary <int, int> counts)
{
Huffman <int> huffman = new Huffman <int>(counts);
return(huffman.Decode(list).ToArray());
}
private void MultiHuffmanEncoding(int i, int[] yRunLenEncoded, int[] cBRunLenEncoded, int[] cRRunLenEncoded, bool isLastFrame, int[][] YHuffmanValues, int[][] CbHuffmanValues, int[][] CrHuffmanValues)
{
YHuffmanValues[i % keyFrameEvery] = yRunLenEncoded;
CbHuffmanValues[i % keyFrameEvery] = cBRunLenEncoded;
CrHuffmanValues[i % keyFrameEvery] = cRRunLenEncoded;
if (isLastFrame)
{
int[] yTemp = new int[0];
int[] cBTemp = new int[0];
int[] cRTemp = new int[0];
int frameAfterLastKeyFrame = i - (i % keyFrameEvery);
int max = (i % keyFrameEvery) + 1;
for (int j = 0; j < max; j++)
{
int yLength = yTemp.Length;
int cBLength = cBTemp.Length;
int cRLength = cRTemp.Length;
Array.Resize(ref yTemp, yLength + YHuffmanValues[j].Length);
Array.Resize(ref cBTemp, cBLength + CbHuffmanValues[j].Length);
Array.Resize(ref cRTemp, cRLength + CrHuffmanValues[j].Length);
Array.Copy(YHuffmanValues[j], 0, yTemp, yLength, YHuffmanValues[j].Length);
Array.Copy(CbHuffmanValues[j], 0, cBTemp, cBLength, CbHuffmanValues[j].Length);
Array.Copy(CrHuffmanValues[j], 0, cRTemp, cRLength, CrHuffmanValues[j].Length);
}
Huffman <int> YHuffman = new Huffman <int>(yTemp);
Huffman <int> CbHuffman = new Huffman <int>(cBTemp);
Huffman <int> CrHuffman = new Huffman <int>(cRTemp);
for (int j = 0; j < max; j++)
{
int k = frameAfterLastKeyFrame + j;
YBitArray[k] = HuffmanEncoding(YHuffman, YHuffmanValues[j]);
CbBitArray[k] = HuffmanEncoding(CbHuffman, CbHuffmanValues[j]);
CrBitArray[k] = HuffmanEncoding(CrHuffman, CrHuffmanValues[j]);
}
YHuffmanCounts[i / keyFrameEvery] = YHuffman.GetCounts();
CbHuffmanCounts[i / keyFrameEvery] = CbHuffman.GetCounts();
CrHuffmanCounts[i / keyFrameEvery] = CrHuffman.GetCounts();
}
else if (i % keyFrameEvery == keyFrameEvery - 1)
{
int[] yTemp = new int[0];
int[] cBTemp = new int[0];
int[] cRTemp = new int[0];
for (int j = 0; j < keyFrameEvery; j++)
{
int yLength = yTemp.Length;
int cBLength = cBTemp.Length;
int cRLength = cRTemp.Length;
Array.Resize(ref yTemp, yLength + YHuffmanValues[j].Length);
Array.Resize(ref cBTemp, cBLength + CbHuffmanValues[j].Length);
Array.Resize(ref cRTemp, cRLength + CrHuffmanValues[j].Length);
Array.Copy(YHuffmanValues[j], 0, yTemp, yLength, YHuffmanValues[j].Length);
Array.Copy(CbHuffmanValues[j], 0, cBTemp, cBLength, CbHuffmanValues[j].Length);
Array.Copy(CrHuffmanValues[j], 0, cRTemp, cRLength, CrHuffmanValues[j].Length);
}
Huffman <int> YHuffman = new Huffman <int>(yTemp);
Huffman <int> CbHuffman = new Huffman <int>(cBTemp);
Huffman <int> CrHuffman = new Huffman <int>(cRTemp);
for (int j = 0; j < keyFrameEvery; j++)
{
int k = i - keyFrameEvery + 1 + j;
YBitArray[k] = HuffmanEncoding(YHuffman, YHuffmanValues[j]);
CbBitArray[k] = HuffmanEncoding(CbHuffman, CbHuffmanValues[j]);
CrBitArray[k] = HuffmanEncoding(CrHuffman, CrHuffmanValues[j]);
}
YHuffmanCounts[i / keyFrameEvery] = YHuffman.GetCounts();
CbHuffmanCounts[i / keyFrameEvery] = CbHuffman.GetCounts();
CrHuffmanCounts[i / keyFrameEvery] = CrHuffman.GetCounts();
}
}
private List <int> HuffmanEncoding(Huffman <int> huffman, int[] array)
{
return(huffman.Encode(array));
}