/// <summary>
/// Decode the encoded data to surface
/// </summary>
/// <param name="tileDic">The dictionary of tile index and encoded tile data</param>
public void ProgressiveDecode(Dictionary <TileIndex, EncodedTile> tileDic)
{
if (this.CurrentFrame == null)
{
this.CurrentFrame = SurfaceFrame.GetFromImage(this.Id, new Bitmap(this.Width, this.Height));
}
foreach (TileIndex index in tileDic.Keys)
{
TileState tState = new TileState(this, index);
RfxProgressiveDecoder.DecodeTile(tileDic[index], tState);
}
}
/// <summary>
/// Decode and Render the tile to an image
/// </summary>
/// <returns>The image rendered from tile</returns>
public Bitmap ToImage()
{
Bitmap tileImg = new Bitmap(RdpegfxTileUtils.TileSize, RdpegfxTileUtils.TileSize);
RfxProgressiveCodecContext codecContext = new RfxProgressiveCodecContext(this.CodecQuantVals, this.QuantIdxY, this.QuantIdxCb, this.QuantIdxCr, UseReduceExtrapolate);
codecContext.YComponent = new short[Y_DwtQ.Length];
codecContext.CbComponent = new short[Cb_DwtQ.Length];
codecContext.CrComponent = new short[Cr_DwtQ.Length];
Y_DwtQ.CopyTo(codecContext.YComponent, 0);
Cb_DwtQ.CopyTo(codecContext.CbComponent, 0);
Cr_DwtQ.CopyTo(codecContext.CrComponent, 0);
RfxProgressiveDecoder.DecodeTileFromDwtQ(codecContext);
BitmapData bmpData = tileImg.LockBits(new Rectangle(0, 0, tileImg.Width, tileImg.Height), ImageLockMode.WriteOnly, System.Drawing.Imaging.PixelFormat.Format24bppRgb);
unsafe
{
byte *cusor = (byte *)bmpData.Scan0.ToPointer();
for (int y = 0; y < bmpData.Height; y++)
{
for (int x = 0; x < bmpData.Width; x++)
{
cusor[0] = codecContext.BSet[x, y];
cusor[1] = codecContext.GSet[x, y];
cusor[2] = codecContext.RSet[x, y];
cusor += 3;
}
cusor += (bmpData.Stride - 3 * (bmpData.Width));
}
}
tileImg.UnlockBits(bmpData);
return(tileImg);
}