private static DecodeDelegate GetDecodeDelegate(PsdColorMode psdColorMode)
{
switch (psdColorMode)
{
case PsdColorMode.Bitmap:
return(SetPDNRowBitmap);
case PsdColorMode.Grayscale:
case PsdColorMode.Duotone:
return(SetPDNRowGrayscale);
case PsdColorMode.Indexed:
return(SetPDNRowIndexed);
case PsdColorMode.RGB:
return(SetPDNRowRgb);
case PsdColorMode.CMYK:
return(SetPDNRowCmyk);
case PsdColorMode.Lab:
return(SetPDNRowLab);
case PsdColorMode.Multichannel:
throw new Exception("Cannot decode multichannel.");
default:
throw new Exception("Unknown color mode.");
}
}
///////////////////////////////////////////////////////////////////////////
private void LoadHeader(PsdBinaryReader reader)
{
Debug.WriteLine("LoadHeader started at " + reader.BaseStream.Position.ToString(CultureInfo.InvariantCulture));
var signature = reader.ReadAsciiChars(4);
if (signature != "8BPS")
{
throw new PsdInvalidException("The given stream is not a valid PSD file");
}
Version = reader.ReadInt16();
if (Version != 1)
{
throw new PsdInvalidException("The PSD file has an unknown version");
}
//6 bytes reserved
reader.BaseStream.Position += 6;
this.ChannelCount = reader.ReadInt16();
this.RowCount = reader.ReadInt32();
this.ColumnCount = reader.ReadInt32();
BitDepth = reader.ReadInt16();
ColorMode = (PsdColorMode)reader.ReadInt16();
}
///////////////////////////////////////////////////////////////////////////
private void LoadHeader(PsdBinaryReader reader)
{
Util.DebugMessage(reader.BaseStream, "Load, Begin, File header");
var signature = reader.ReadAsciiChars(4);
if (signature != "8BPS")
{
throw new PsdInvalidException("The given stream is not a valid PSD file");
}
Version = (PsdFileVersion)reader.ReadInt16();
Util.DebugMessage(reader.BaseStream, "Load, Info, Version {0}", (int)Version);
if ((Version != PsdFileVersion.Psd) &&
(Version != PsdFileVersion.PsbLargeDocument))
{
throw new PsdInvalidException("The PSD file has an unknown version");
}
//6 bytes reserved
reader.BaseStream.Position += 6;
this.ChannelCount = reader.ReadInt16();
this.RowCount = reader.ReadInt32();
this.ColumnCount = reader.ReadInt32();
BitDepth = reader.ReadInt16();
ColorMode = (PsdColorMode)reader.ReadInt16();
Util.DebugMessage(reader.BaseStream, "Load, End, File header");
}
private static DecodeDelegate GetDecodeDelegate32(PsdColorMode psdColorMode)
{
switch (psdColorMode)
{
case PsdColorMode.Grayscale:
return(SetPDNRowGrayscale32);
case PsdColorMode.RGB:
return(SetPDNRowRgb32);
default:
throw new PsdInvalidException(
"32-bit HDR images must be either RGB or grayscale.");
}
}
public static Int16 MinChannelCount(this PsdColorMode colorMode)
{
switch (colorMode)
{
case PsdColorMode.Bitmap:
case PsdColorMode.Duotone:
case PsdColorMode.Grayscale:
case PsdColorMode.Indexed:
case PsdColorMode.Multichannel:
return(1);
case PsdColorMode.Lab:
case PsdColorMode.Rgb:
return(3);
case PsdColorMode.Cmyk:
return(4);
}
throw new ArgumentException("Unknown color mode.");
}
///////////////////////////////////////////////////////////////////////////
private void LoadHeader(PsdBinaryReader reader) {
var signature = reader.ReadAsciiChars(4);
if (signature != "8BPS")
throw new PsdInvalidException("The given stream is not a valid PSD file");
Version = reader.ReadInt16();
if (Version != 1)
throw new PsdInvalidException("The PSD file has an unknown version");
//6 bytes reserved
reader.BaseStream.Position += 6;
this.ChannelCount = reader.ReadInt16();
this.RowCount = reader.ReadInt32();
this.ColumnCount = reader.ReadInt32();
BitDepth = reader.ReadInt16();
ColorMode = (PsdColorMode)reader.ReadInt16();
}
