public Layer(BinaryReverseReader reader, PsdFile psdFile)
{
Debug.WriteLine("Layer started at " + reader.BaseStream.Position);
m_psdFile = psdFile;
m_rect = new Rectangle
{
Y = reader.ReadInt32(),
X = reader.ReadInt32()
};
m_rect.Height = reader.ReadInt32() - m_rect.Y;
m_rect.Width = reader.ReadInt32() - m_rect.X;
//-----------------------------------------------------------------------
int numberOfChannels = reader.ReadUInt16();
m_channels.Clear();
for (int channel = 0; channel < numberOfChannels; channel++)
{
var ch = new Channel(reader, this);
m_channels.Add(ch);
m_sortedChannels.Add(ch.ID, ch);
}
//-----------------------------------------------------------------------
var signature = new string(reader.ReadChars(4));
if (signature != LayerConstants.EightBimSignature)
throw (new IOException("Layer Channelheader error!"));
m_blendModeKey = new string(reader.ReadChars(4));
m_opacity = reader.ReadByte();
m_clipping = reader.ReadByte() > 0;
//-----------------------------------------------------------------------
byte flags = reader.ReadByte();
m_flags = new BitVector32(flags);
//-----------------------------------------------------------------------
reader.ReadByte(); //padding
//-----------------------------------------------------------------------
Debug.WriteLine("Layer extraDataSize started at " + reader.BaseStream.Position);
// 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);
//-----------------------------------------------------------------------
var namePosition = reader.BaseStream.Position;
m_name = reader.ReadPascalString();
var 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 BitVector32 Flags
//{
// get { return flags; }
//}
/// <summary>
/// Initializes a new instance of the <see cref="Layer"/> class using the provided reader containing the PSD file data.
/// </summary>
/// <param name="reader">The reader containing the PSD file data.</param>
/// <param name="psdFile">The PSD file to set as the parent.</param>
public Layer(BinaryReverseReader reader, PsdFile psdFile)
{
Children = new List<Layer>();
PsdFile = psdFile;
// read the rect
Rect rect = new Rect();
rect.y = reader.ReadInt32();
rect.x = reader.ReadInt32();
rect.height = reader.ReadInt32() - rect.y;
rect.width = reader.ReadInt32() - rect.x;
Rect = rect;
// read the channels
int channelCount = reader.ReadUInt16();
Channels = new List<Channel>();
SortedChannels = new SortedList<short, Channel>();
for (int index = 0; index < channelCount; ++index)
{
Channel channel = new Channel(reader, this);
Channels.Add(channel);
SortedChannels.Add(channel.ID, channel);
}
// read the header and verify it
if (new string(reader.ReadChars(4)) != "8BIM")
{
throw new IOException("Layer Channelheader error!");
}
// read the blend mode key (unused) (defaults to "norm")
reader.ReadChars(4);
// read the opacity
Opacity = reader.ReadByte();
// read the clipping (unused) (< 0 = base, > 0 = non base)
reader.ReadByte();
// read all of the flags (protectTrans, visible, obsolete, ver5orLater, pixelDataIrrelevant)
flags = new BitVector32(reader.ReadByte());
// skip a padding byte
reader.ReadByte();
uint num3 = reader.ReadUInt32();
long position1 = reader.BaseStream.Position;
MaskData = new Mask(reader, this);
BlendingRangesData = new BlendingRanges(reader);
long position2 = reader.BaseStream.Position;
// read the name
Name = reader.ReadPascalString();
// read the adjustment info
int count = (int)((reader.BaseStream.Position - position2) % 4L);
reader.ReadBytes(count);
AdjustmentInfo = new List<AdjustmentLayerInfo>();
long num4 = position1 + num3;
while (reader.BaseStream.Position < num4)
{
try
{
AdjustmentInfo.Add(new AdjustmentLayerInfo(reader, this));
}
catch
{
reader.BaseStream.Position = num4;
}
}
foreach (AdjustmentLayerInfo adjustmentLayerInfo in AdjustmentInfo)
{
if (adjustmentLayerInfo.Key == "TySh")
{
ReadTextLayer(adjustmentLayerInfo.DataReader);
}
else if (adjustmentLayerInfo.Key == "luni")
{
// read the unicode name
BinaryReverseReader dataReader = adjustmentLayerInfo.DataReader;
dataReader.ReadBytes(3);
dataReader.ReadByte();
Name = dataReader.ReadString().TrimEnd(new char[1]);
}
}
reader.BaseStream.Position = num4;
}
public DecompressChannelContext(Channel ch) {
this.ch = ch;
}
public Layer(BinaryReverseReader reader, PsdFile psdFile)
{
Debug.WriteLine("Layer started at " + reader.BaseStream.Position.ToString());
m_psdFile = psdFile;
m_rect = new Rectangle();
m_rect.Y = reader.ReadInt32();
m_rect.X = reader.ReadInt32();
m_rect.Height = reader.ReadInt32() - m_rect.Y;
m_rect.Width = reader.ReadInt32() - m_rect.X;
//-----------------------------------------------------------------------
int numberOfChannels = reader.ReadUInt16();
this.m_channels.Clear();
for (int channel = 0; channel < numberOfChannels; channel++)
{
Channel ch = new Channel(reader, this);
m_channels.Add(ch);
m_sortedChannels.Add(ch.ID, ch);
}
//-----------------------------------------------------------------------
string signature = new string(reader.ReadChars(4));
if (signature != "8BIM")
throw (new IOException("Layer Channelheader error!"));
m_blendModeKey = new string(reader.ReadChars(4));
m_opacity = reader.ReadByte();
m_clipping = reader.ReadByte() > 0;
//-----------------------------------------------------------------------
byte flags = reader.ReadByte();
m_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 AdjustmentLayerInfo
uint extraDataSize = reader.ReadUInt32();
// remember the start position for calculation of the
// AdjustmentLayerInfo size
long extraDataStartPosition = reader.BaseStream.Position;
m_maskData = new Mask(reader, this);
m_blendingRangesData = new BlendingRanges(reader, this);
//-----------------------------------------------------------------------
long namePosition = reader.BaseStream.Position;
m_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 adjustmentLayerEndPos = extraDataStartPosition + extraDataSize;
while (reader.BaseStream.Position < adjustmentLayerEndPos)
{
try
{
AdjustmentLayerInfo ali = new AdjustmentLayerInfo(reader, this);
if (ali.Key.Equals("lrFX"))
{
//A sub-key - we want to merge its sub-layer info items with this dict.
m_adjustmentInfo.AddRange(new Effects(ali)._resources.Values);
} else
m_adjustmentInfo.Add(ali); // Just add the items
}
catch
{
reader.BaseStream.Position = adjustmentLayerEndPos;
}
}
//-----------------------------------------------------------------------
// make sure we are not on a wrong offset, so set the stream position
// manually
reader.BaseStream.Position = adjustmentLayerEndPos;
}
///////////////////////////////////////////////////////////////////////////
#endregion
///////////////////////////////////////////////////////////////////////////
#region ImageData
///////////////////////////////////////////////////////////////////////////
private void LoadImage(PsdBinaryReader reader) {
ImageCompression = (ImageCompression)reader.ReadInt16();
// Create channels
for (Int16 i = 0; i < ChannelCount; i++) {
var channel = new Channel(i, this.BaseLayer);
channel.ImageCompression = ImageCompression;
channel.Length = this.RowCount * Util.BytesPerRow(BaseLayer.Rect, BitDepth);
// The composite image stores all RLE headers up-front, rather than
// with each channel.
if (ImageCompression == ImageCompression.Rle) {
channel.RleRowLengths = new RleRowLengths(reader, RowCount);
channel.Length = channel.RleRowLengths.Total;
}
BaseLayer.Channels.Add(channel);
}
foreach (var channel in this.BaseLayer.Channels) {
channel.ImageDataRaw = reader.ReadBytes(channel.Length);
}
// If there is exactly one more channel than we need, then it is the
// alpha channel.
if ((ColorMode != PsdColorMode.Multichannel)
&& (ChannelCount == ColorMode.MinChannelCount() + 1)) {
var alphaChannel = BaseLayer.Channels.Last();
alphaChannel.ID = -1;
}
}
///////////////////////////////////////////////////////////////////////////
/// <summary>
/// Create ImageData for any missing channels.
/// </summary>
public void CreateMissingChannels()
{
var channelCount = this.PsdFile.ColorMode.MinChannelCount();
for (short id = 0; id < channelCount; id++)
{
if (!this.Channels.ContainsId(id))
{
var size = (int)(this.Rect.height * this.Rect.width);
var ch = new Channel(id, this);
ch.ImageData = new byte[size];
unsafe
{
fixed (byte* ptr = &ch.ImageData[0])
{
Util.Fill(ptr, ptr + size, (byte)255);
}
}
this.Channels.Add(ch);
}
}
}
public Layer(PsdBinaryReader reader, PsdFile psdFile)
: this(psdFile)
{
Rect = reader.ReadRectangle();
//-----------------------------------------------------------------------
// Read channel headers. Image data comes later, after the layer header.
int numberOfChannels = reader.ReadUInt16();
for (int channel = 0; channel < numberOfChannels; channel++)
{
var ch = new Channel(reader, this);
Channels.Add(ch);
}
//-----------------------------------------------------------------------
//
var signature = reader.ReadAsciiChars(4);
if (signature != "8BIM")
throw (new PsdInvalidException("Invalid signature in layer header."));
BlendModeKey = reader.ReadAsciiChars(4);
Opacity = reader.ReadByte();
Clipping = reader.ReadBoolean();
var flagsByte = reader.ReadByte();
flags = new BitVector32(flagsByte);
reader.ReadByte(); //padding
//-----------------------------------------------------------------------
// This is the total size of the MaskData, the BlendingRangesData, the
// Name and the AdjustmentLayerInfo.
var extraDataSize = reader.ReadUInt32();
var extraDataStartPosition = reader.BaseStream.Position;
Masks = new MaskInfo(reader, this);
BlendingRangesData = new BlendingRanges(reader, this);
Name = reader.ReadPascalString(4);
//-----------------------------------------------------------------------
// Process Additional Layer Information
long adjustmentLayerEndPos = extraDataStartPosition + extraDataSize;
while (reader.BaseStream.Position < adjustmentLayerEndPos)
{
var layerInfo = LayerInfoFactory.Load(reader);
AdditionalInfo.Add(layerInfo);
}
foreach (var adjustmentInfo in AdditionalInfo)
{
switch (adjustmentInfo.Key)
{
case "luni":
Name = ((LayerUnicodeName)adjustmentInfo).Name;
break;
}
}
}
///////////////////////////////////////////////////////////////////////////
private void LoadImage(PsdBinaryReader reader)
{
Debug.WriteLine("LoadImage started at " + reader.BaseStream.Position.ToString(CultureInfo.InvariantCulture));
BaseLayer.Rect = new Rectangle(0, 0, ColumnCount, RowCount);
ImageCompression = (ImageCompression)reader.ReadInt16();
switch (ImageCompression)
{
case ImageCompression.Raw:
var length = this.RowCount * Util.BytesPerRow(BaseLayer.Rect, BitDepth);
for (Int16 i = 0; i < ChannelCount; i++)
{
var channel = new Channel(i, this.BaseLayer);
channel.ImageCompression = ImageCompression;
channel.Length = length;
channel.ImageData = reader.ReadBytes(length);
BaseLayer.Channels.Add(channel);
}
break;
case ImageCompression.Rle:
// Store RLE data length
for (Int16 i = 0; i < ChannelCount; i++)
{
var channel = new Channel(i, this.BaseLayer);
channel.RleHeader = reader.ReadBytes(2 * RowCount);
int totalRleLength = 0;
using (var memoryStream = new MemoryStream(channel.RleHeader))
using (var memoryReader = new PsdBinaryReader(memoryStream, Encoding.ASCII))
{
for (int j = 0; j < RowCount; j++)
totalRleLength += memoryReader.ReadUInt16();
}
channel.ImageCompression = this.ImageCompression;
channel.Length = (int)totalRleLength;
this.BaseLayer.Channels.Add(channel);
}
foreach (var channel in this.BaseLayer.Channels)
{
channel.Data = reader.ReadBytes(channel.Length);
}
break;
}
// If there is one more channel than we need, then it is the alpha channel
if (ChannelCount == ColorMode.ChannelCount() + 1)
{
var alphaChannel = BaseLayer.Channels.Last();
alphaChannel.ID = -1;
}
}
public Layer(PsdBinaryReader reader, PsdFile psdFile)
: this(psdFile)
{
Util.DebugMessage(reader.BaseStream, "Load, Begin, Layer");
Rect = reader.ReadRectangle();
//-----------------------------------------------------------------------
// Read channel headers. Image data comes later, after the layer header.
int numberOfChannels = reader.ReadUInt16();
for (int channel = 0; channel < numberOfChannels; channel++)
{
var ch = new Channel(reader, this);
Channels.Add(ch);
}
//-----------------------------------------------------------------------
//
var signature = reader.ReadAsciiChars(4);
if (signature != "8BIM")
{
throw (new PsdInvalidException("Invalid signature in layer header."));
}
BlendModeKey = reader.ReadAsciiChars(4);
Opacity = reader.ReadByte();
Clipping = reader.ReadBoolean();
var flagsByte = reader.ReadByte();
flags = new BitVector32(flagsByte);
reader.ReadByte(); //padding
//-----------------------------------------------------------------------
// This is the total size of the MaskData, the BlendingRangesData, the
// Name and the AdjustmentLayerInfo.
var extraDataSize = reader.ReadUInt32();
var extraDataStartPosition = reader.BaseStream.Position;
Masks = new MaskInfo(reader, this);
BlendingRangesData = new BlendingRanges(reader, this);
Name = reader.ReadPascalString(4);
//-----------------------------------------------------------------------
// Process Additional Layer Information
long adjustmentLayerEndPos = extraDataStartPosition + extraDataSize;
while (reader.BaseStream.Position < adjustmentLayerEndPos)
{
var layerInfo = LayerInfoFactory.Load(reader, this.PsdFile, false, adjustmentLayerEndPos);
AdditionalInfo.Add(layerInfo);
}
foreach (var adjustmentInfo in AdditionalInfo)
{
switch (adjustmentInfo.Key)
{
case "luni":
Name = ((LayerUnicodeName)adjustmentInfo).Name;
break;
case "lyid":
LayerID = ((LayerId)adjustmentInfo).ID;
break;
}
}
Util.DebugMessage(reader.BaseStream, "Load, End, Layer, {0}", Name);
PsdFile.LoadContext.OnLoadLayerHeader(this);
}
