protected File() {
numchannels = 0;
imgsize = Size.Empty;
bpp = 8;
mode = ImageMode.RGBColor;
colormap = new Colormap();
resources = new Resources();
layers = new Layers( this );
image = null;
}
public void ReadFrom( BinaryReader reader ) {
ReadHeader( reader );
colormap = new Colormap( reader );
resources = new Resources( reader );
layers = new Layers( this, reader );
CompressionMethod compression = (CompressionMethod)IPAddress.NetworkToHostOrder( reader.ReadInt16() );
byte[][] data = new byte[3][];
switch ( compression ) {
case CompressionMethod.Raw:
// read each line
for ( int c=0; c<3; c++ ) {
//data[c] = new byte[imgsize.Width*imgsize.Height];
//int i = 0;
//while ( i < imgsize.Width*imgsize.Height ) i += reader.Read( data[c], i, (imgsize.Width*imgsize.Height)-i );
data[c] = new byte[imgsize.Width*imgsize.Height];
reader.Read( data[c], 0, data[c].Length );
}
image = new Channels( imgsize, data[0], data[1], data[2] ).Combine();
break;
case CompressionMethod.RLE:
// Throw widthlist away...
reader.ReadBytes( imgsize.Height * numchannels * 2 );
// read each line
for ( int c=0; c<3; c++ ) {
data[c] = new byte[imgsize.Width*imgsize.Height];
for ( int y=0, offset = 0; y<imgsize.Height; ++y ) {
offset += Utils.UnpackRLELine( reader, imgsize.Width, data[c], offset );
}
}
image = new Channels( imgsize, data[0], data[1], data[2] ).Combine();
break;
default:
throw new InvalidCompressionMethodException( compression );
}
}
