public Layer(BinaryReverseReader reader, PsdFile psdFile)
{
Debug.WriteLine("Layer started at " + reader.BaseStream.Position.ToString());
PsdFile = psdFile;
Rect = new Rectangle
{
Y = reader.ReadInt32(),
X = reader.ReadInt32(),
Height = reader.ReadInt32() - Rect.Y,
Width = reader.ReadInt32() - Rect.X
};
//-----------------------------------------------------------------------
int numberOfChannels = reader.ReadUInt16();
_channels.Clear();
for (var channel = 0; channel < numberOfChannels; channel++)
{
var ch = new Channel(reader, this);
_channels.Add(ch);
_sortedChannels.Add(ch.Id, ch);
}
//-----------------------------------------------------------------------
var signature = new string(reader.ReadChars(4));
if (signature != "8BIM")
throw (new IOException("Layer Channelheader error!"));
_blendModeKey = new string(reader.ReadChars(4));
Opacity = reader.ReadByte();
Clipping = reader.ReadByte() > 0;
//-----------------------------------------------------------------------
byte flags = reader.ReadByte();
_flags = new BitVector32(flags);
//-----------------------------------------------------------------------
reader.ReadByte(); //padding
//-----------------------------------------------------------------------
Debug.WriteLine("Layer extraDataSize started at " + reader.BaseStream.Position.ToString());
// this is the total size of the MaskData, the BlendingRangesData, the
// Name and the AdjustmenLayerInfo
uint extraDataSize = reader.ReadUInt32();
// remember the start position for calculation of the
// AdjustmenLayerInfo size
long extraDataStartPosition = reader.BaseStream.Position;
m_maskData = new Mask(reader, this);
m_blendingRangesData = new BlendingRanges(reader, this);
//-----------------------------------------------------------------------
long namePosition = reader.BaseStream.Position;
Name = reader.ReadPascalString();
int paddingBytes = (int)((reader.BaseStream.Position - namePosition) % 4);
Debug.Print("Layer {0} padding bytes after name", paddingBytes);
reader.ReadBytes(paddingBytes);
//-----------------------------------------------------------------------
m_adjustmentInfo.Clear();
long adjustmenLayerEndPos = extraDataStartPosition + extraDataSize;
while (reader.BaseStream.Position < adjustmenLayerEndPos)
{
try
{
m_adjustmentInfo.Add(new AdjusmentLayerInfo(reader, this));
}
catch
{
reader.BaseStream.Position = adjustmenLayerEndPos;
}
}
//-----------------------------------------------------------------------
// make shure we are not on a wrong offset, so set the stream position
// manually
reader.BaseStream.Position = adjustmenLayerEndPos;
}
//////////////////////////////////////////////////////////////////
public ImageResource(BinaryReverseReader reader)
{
m_osType = new string(reader.ReadChars(4));
if (m_osType != "8BIM" && m_osType != "MeSa")
{
throw new InvalidOperationException("Could not read an image resource");
}
m_id = reader.ReadInt16();
m_name = reader.ReadPascalString();
uint settingLength = reader.ReadUInt32();
m_data = reader.ReadBytes((int)settingLength);
if (reader.BaseStream.Position % 2 == 1)
reader.ReadByte();
}
public AdjusmentLayerInfo(BinaryReverseReader reader, Layer layer)
{
Debug.WriteLine("AdjusmentLayerInfo started at " + reader.BaseStream.Position.ToString());
m_layer = layer;
string signature = new string(reader.ReadChars(4));
if (signature != "8BIM")
{
throw new IOException("Could not read an image resource");
}
m_key = new string(reader.ReadChars(4));
uint dataLength = reader.ReadUInt32();
m_data = reader.ReadBytes((int)dataLength);
}
///////////////////////////////////////////////////////////////////////////
private void LoadHeader(BinaryReverseReader reader)
{
Debug.WriteLine("LoadHeader started at " + reader.BaseStream.Position.ToString());
string signature = new string(reader.ReadChars(4));
if (signature != "8BPS")
throw new IOException("The given stream is not a valid PSD file");
m_version = reader.ReadInt16();
if (m_version != 1)
throw new IOException("The PSD file has an unkown version");
//6 bytes reserved
reader.BaseStream.Position += 6;
m_channels = reader.ReadInt16();
m_rows = reader.ReadInt32();
m_columns = reader.ReadInt32();
m_depth = reader.ReadInt16();
m_colorMode = (ColorModes)reader.ReadInt16();
}