public int WriteResidualBlock(int[] coeffLevel, int[] coeffRun, ResidualBlockInfo residualBlock)
{
return entropyOutputStream.WriteResidualBlock(coeffLevel, coeffRun, residualBlock);
}
private int ForwardTransform(int[][] mrSrc, int[][] m4Dst, int[][] mrDst)
{
const int maxNumDcCoeff = 16;
const int maxNumAcCoeff = 15;
var acCoeff = 0;
for (var blockY = 0; blockY < mbHeight; blockY += 4)
for (var blockX = 0; blockX < mbWidth; blockX += 4)
transform.Forward4X4(mrSrc, mrDst, blockY, blockX);
for (var j = 0; j < dcHeight; j++)
for (var i = 0; i < dcWidth; i++)
m4Dst[j][i] = mrDst[j << 2][i << 2];
transform.Hadamard4X4(m4Dst, m4Dst);
var nonZeroCoeff = quantizer.Quantization4X4DC(m4Dst, m4Dst);
var blockInfo = new ResidualBlockInfo(ResidualBlockType.Intra16X16LumaDCLevel, maxNumDcCoeff, nonZeroCoeff);
info.LumaDcBlockInfo = blockInfo;
for (var blockY = 0; blockY < mbHeight; blockY += 4)
{
for (var blockX = 0; blockX < mbHeight; blockX += 4)
{
nonZeroCoeff = quantizer.Quantization4X4AC(mrDst, mrDst, blockY, blockX);
blockInfo = new ResidualBlockInfo(ResidualBlockType.Intra16X16LumaACLevel, maxNumAcCoeff,
nonZeroCoeff);
info.SetLumaAcBlockInfo(blockX >> 2, blockY >> 2, blockInfo);
if (nonZeroCoeff > 0)
acCoeff = 15;
}
}
return acCoeff;
}