public static Bitmap DecodeImage(PsdFile psdFile)
{
Bitmap bitmap = new Bitmap(psdFile.Columns, psdFile.Rows, PixelFormat.Format32bppArgb);
//Parallel load each row
Parallel.For(0, psdFile.Rows, y =>
{
Int32 rowIndex = y * psdFile.Columns;
for (Int32 x = 0; x < psdFile.Columns; x++)
{
Int32 pos = rowIndex + x;
Color pixelColor = GetColor(psdFile, pos);
lock (bitmap)
{
bitmap.SetPixel(x, y, pixelColor);
}
}
});
return bitmap;
}
public Layer(PsdFile psdFile)
{
AdjustmentInfo = new List<AdjusmentLayerInfo>();
SortedChannels = new SortedList<Int16, Channel>();
Channels = new List<Channel>();
Rect = Rectangle.Empty;
PsdFile = psdFile;
}
public Layer(BinaryReverseReader reverseReader, PsdFile psdFile)
{
AdjustmentInfo = new List<AdjusmentLayerInfo>();
SortedChannels = new SortedList<Int16, Channel>();
Channels = new List<Channel>();
Debug.WriteLine("Layer started at " + reverseReader.BaseStream.Position.ToString(CultureInfo.InvariantCulture));
PsdFile = psdFile;
Rectangle localRectangle = new Rectangle
{
Y = reverseReader.ReadInt32(),
X = reverseReader.ReadInt32()
};
localRectangle.Height = reverseReader.ReadInt32() - localRectangle.Y;
localRectangle.Width = reverseReader.ReadInt32() - localRectangle.X;
Rect = localRectangle;
Int32 numberOfChannels = reverseReader.ReadUInt16();
Channels.Clear();
for (Int32 channel = 0; channel < numberOfChannels; channel++)
{
Channel ch = new Channel(reverseReader, this);
Channels.Add(ch);
SortedChannels.Add(ch.ID, ch);
}
String signature = new String(reverseReader.ReadChars(4));
if (signature != "8BIM") throw (new IOException("Layer Channelheader error"));
_blendModeKeyStr = new String(reverseReader.ReadChars(4));
Opacity = reverseReader.ReadByte();
Clipping = reverseReader.ReadByte() > 0;
Byte flags = reverseReader.ReadByte();
_flags = new BitVector32(flags);
reverseReader.ReadByte(); //padding
Debug.WriteLine("Layer extraDataSize started at " + reverseReader.BaseStream.Position.ToString(CultureInfo.InvariantCulture));
// this is the total size of the MaskData, the BlendingRangesData, the
// Name and the AdjustmenLayerInfo
UInt32 extraDataSize = reverseReader.ReadUInt32();
// remember the start position for calculation of the
// AdjustmenLayerInfo size
Int64 extraDataStartPosition = reverseReader.BaseStream.Position;
MaskData = new Mask(reverseReader, this);
BlendingRangesData = new BlendingRanges(reverseReader, this);
Int64 namePosition = reverseReader.BaseStream.Position;
Name = reverseReader.ReadPascalString();
Int32 paddingBytes = (Int32)((reverseReader.BaseStream.Position - namePosition) % 4);
Debug.Print("Layer {0} padding bytes after name", paddingBytes);
reverseReader.ReadBytes(paddingBytes);
AdjustmentInfo.Clear();
Int64 adjustmenLayerEndPos = extraDataStartPosition + extraDataSize;
while (reverseReader.BaseStream.Position < adjustmenLayerEndPos)
{
try
{
AdjustmentInfo.Add(new AdjusmentLayerInfo(reverseReader, this));
}
catch
{
reverseReader.BaseStream.Position = adjustmenLayerEndPos;
}
}
// make shure we are not on a wrong offset, so set the stream position
// manually
reverseReader.BaseStream.Position = adjustmenLayerEndPos;
}
private static Color GetColor(PsdFile psdFile, Int32 pos)
{
Color c = Color.White;
switch (psdFile.ColorMode)
{
case PsdFile.ColorModes.RGB:
c = Color.FromArgb(psdFile.ImageData[0][pos], psdFile.ImageData[1][pos], psdFile.ImageData[2][pos]);
break;
case PsdFile.ColorModes.CMYK:
c = CMYKToRGB(psdFile.ImageData[0][pos], psdFile.ImageData[1][pos], psdFile.ImageData[2][pos], psdFile.ImageData[3][pos]);
break;
case PsdFile.ColorModes.Multichannel:
c = CMYKToRGB(psdFile.ImageData[0][pos], psdFile.ImageData[1][pos], psdFile.ImageData[2][pos], 0);
break;
case PsdFile.ColorModes.Grayscale:
case PsdFile.ColorModes.Duotone:
c = Color.FromArgb(psdFile.ImageData[0][pos], psdFile.ImageData[0][pos], psdFile.ImageData[0][pos]);
break;
case PsdFile.ColorModes.Indexed:
{
Int32 index = psdFile.ImageData[0][pos];
c = Color.FromArgb(psdFile.ColorModeData[index], psdFile.ColorModeData[index + 256], psdFile.ColorModeData[index + 2 * 256]);
}
break;
case PsdFile.ColorModes.Lab:
c = LabToRGB(psdFile.ImageData[0][pos], psdFile.ImageData[1][pos], psdFile.ImageData[2][pos]);
break;
}
return c;
}
