#pragma warning restore SA1401
/// <summary>
/// Initializes a new instance of the <see cref="YCbCrImage" /> class.
/// </summary>
/// <param name="width">The width.</param>
/// <param name="height">The height.</param>
/// <param name="ratio">The ratio.</param>
public YCbCrImage(int width, int height, YCbCrSubsampleRatio ratio)
{
Size cSize = CalculateChrominanceSize(width, height, ratio);
this.Ratio = ratio;
this.YStride = width;
this.CStride = cSize.Width;
this.YChannel = JpegPixelArea.CreatePooled(width, height);
this.CbChannel = JpegPixelArea.CreatePooled(cSize.Width, cSize.Height);
this.CrChannel = JpegPixelArea.CreatePooled(cSize.Width, cSize.Height);
}
/// <summary>
/// Dequantize, perform the inverse DCT and store decodedBlock.Block to the into the corresponding <see cref="JpegPixelArea"/> instance.
/// </summary>
/// <param name="decoder">The <see cref="JpegDecoderCore"/></param>
/// <param name="decodedBlock">The <see cref="DecodedBlock"/></param>
private void ProcessBlockColors(JpegDecoderCore decoder, ref DecodedBlock decodedBlock)
{
this.data.Block = decodedBlock.Block;
int qtIndex = decoder.ComponentArray[this.componentIndex].Selector;
this.data.QuantiazationTable = decoder.QuantizationTables[qtIndex];
Block8x8F *b = this.pointers.Block;
Block8x8F.UnZig(b, this.pointers.QuantiazationTable, this.pointers.Unzig);
DCT.TransformIDCT(ref *b, ref *this.pointers.Temp1, ref *this.pointers.Temp2);
JpegPixelArea destChannel = decoder.GetDestinationChannel(this.componentIndex);
JpegPixelArea destArea = destChannel.GetOffsetedSubAreaForBlock(decodedBlock.Bx, decodedBlock.By);
destArea.LoadColorsFrom(this.pointers.Temp1, this.pointers.Temp2);
}
