internal void LoadPixelData(BinaryReverseReader reader)
{
Debug.WriteLine("Mask.LoadPixelData started at " + reader.BaseStream.Position.ToString());
if (m_rect.IsEmpty || m_layer.SortedChannels.ContainsKey(-2) == false)
return;
Channel maskChannel = m_layer.SortedChannels[-2];
maskChannel.Data = reader.ReadBytes((int)maskChannel.Length);
using (BinaryReverseReader readerImg = maskChannel.DataReader)
{
maskChannel.ImageCompression = (ImageCompression)readerImg.ReadInt16();
int bytesPerRow = 0;
switch (m_layer.PsdFile.Depth)
{
case 1:
bytesPerRow = m_rect.Width;//NOT Shure
break;
case 8:
bytesPerRow = m_rect.Width;
break;
case 16:
bytesPerRow = m_rect.Width * 2;
break;
}
maskChannel.ImageData = new byte[m_rect.Height * bytesPerRow];
// Fill Array
for (int i = 0; i < maskChannel.ImageData.Length; i++)
{
maskChannel.ImageData[i] = 0xAB;
}
m_imageData = (byte[])maskChannel.ImageData.Clone();
switch (maskChannel.ImageCompression)
{
case ImageCompression.Raw:
readerImg.Read(maskChannel.ImageData, 0, maskChannel.ImageData.Length);
break;
case ImageCompression.Rle:
{
int[] rowLenghtList = new int[m_rect.Height];
for (int i = 0; i < rowLenghtList.Length; i++)
rowLenghtList[i] = readerImg.ReadInt16();
for (int i = 0; i < m_rect.Height; i++)
{
int rowIndex = i * m_rect.Width;
RleHelper.DecodedRow(readerImg.BaseStream, maskChannel.ImageData, rowIndex, bytesPerRow);
}
}
break;
default:
break;
}
m_imageData = (byte[])maskChannel.ImageData.Clone();
}
}
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;
}
///////////////////////////////////////////////////////////////////////////
internal Mask(BinaryReverseReader reader, Layer layer)
{
Debug.WriteLine("Mask started at " + reader.BaseStream.Position.ToString());
m_layer = layer;
uint maskLength = reader.ReadUInt32();
if (maskLength <= 0)
return;
long startPosition = reader.BaseStream.Position;
//-----------------------------------------------------------------------
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;
m_defaultColor = reader.ReadByte();
//-----------------------------------------------------------------------
byte flags = reader.ReadByte();
m_flags = new BitVector32(flags);
//-----------------------------------------------------------------------
if (maskLength == 36)
{
BitVector32 realFlags = new BitVector32(reader.ReadByte());
byte realUserMaskBackground = reader.ReadByte();
Rectangle rect = new Rectangle();
rect.Y = reader.ReadInt32();
rect.X = reader.ReadInt32();
rect.Height = reader.ReadInt32() - m_rect.Y;
rect.Width = reader.ReadInt32() - m_rect.X;
}
// there is other stuff following, but we will ignore this.
reader.BaseStream.Position = startPosition + maskLength;
}
internal Channel(BinaryReverseReader reader, Layer layer)
{
Debug.WriteLine("Channel started at " + reader.BaseStream.Position);
Id = reader.ReadInt16();
Length = reader.ReadInt32();
_layer = layer;
}
//////////////////////////////////////////////////////////////////
internal void LoadPixelData(BinaryReverseReader reader)
{
Debug.WriteLine("Channel.LoadPixelData started at " + reader.BaseStream.Position.ToString());
Data = reader.ReadBytes(Length);
using (var readerImg = DataReader)
{
ImageCompression = (ImageCompression)readerImg.ReadInt16();
var bytesPerRow = 0;
switch (_layer.PsdFile.Depth)
{
case 1:
bytesPerRow = _layer.Rect.Width;//NOT Shure
break;
case 8:
bytesPerRow = _layer.Rect.Width;
break;
case 16:
bytesPerRow = _layer.Rect.Width * 2;
break;
}
ImageData = new byte[_layer.Rect.Height * bytesPerRow];
switch (ImageCompression)
{
case ImageCompression.Raw:
readerImg.Read(ImageData, 0, ImageData.Length);
break;
case ImageCompression.Rle:
{
int[] rowLenghtList = new int[_layer.Rect.Height];
for (int i = 0; i < rowLenghtList.Length; i++)
rowLenghtList[i] = readerImg.ReadInt16();
for (int i = 0; i < _layer.Rect.Height; i++)
{
int rowIndex = i * _layer.Rect.Width;
RleHelper.DecodedRow(readerImg.BaseStream, ImageData, rowIndex, bytesPerRow);
//if (rowLenghtList[i] % 2 == 1)
// readerImg.ReadByte();
}
}
break;
default:
break;
}
}
}
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);
}
///////////////////////////////////////////////////////////////////////////
public BlendingRanges(BinaryReverseReader reader, Layer layer)
{
Debug.WriteLine("BlendingRanges started at " + reader.BaseStream.Position.ToString());
m_layer = layer;
int dataLength = reader.ReadInt32();
if (dataLength <= 0)
return;
m_data = reader.ReadBytes(dataLength);
}
///////////////////////////////////////////////////////////////////////////
private void LoadLayers(BinaryReverseReader reader)
{
Debug.WriteLine("LoadLayers started at " + reader.BaseStream.Position.ToString());
uint layersInfoSectionLength = reader.ReadUInt32();
if (layersInfoSectionLength <= 0)
return;
long startPosition = reader.BaseStream.Position;
short numberOfLayers = reader.ReadInt16();
// If <0, then number of layers is absolute value,
// and the first alpha channel contains the transparency data for
// the merged result.
if (numberOfLayers < 0)
{
AbsoluteAlpha = true;
numberOfLayers = Math.Abs(numberOfLayers);
}
m_layers.Clear();
if (numberOfLayers == 0)
return;
for (int i = 0; i < numberOfLayers; i++)
{
m_layers.Add(new Layer(reader, this));
}
foreach (Layer layer in m_layers)
{
foreach (Layer.Channel channel in layer.Channels)
{
if (channel.Id != -2)
channel.LoadPixelData(reader);
}
layer.MaskData.LoadPixelData(reader);
}
//-----------------------------------------------------------------------
if (reader.BaseStream.Position % 2 == 1)
reader.ReadByte();
//-----------------------------------------------------------------------
// make shure we are not on a wrong offset, so set the stream position
// manually
reader.BaseStream.Position = startPosition + layersInfoSectionLength;
}
//////////////////////////////////////////////////////////////////
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();
}
///////////////////////////////////////////////////////////////////////////
private void LoadImageResources(BinaryReverseReader reader)
{
Debug.WriteLine("LoadImageResources started at " + reader.BaseStream.Position.ToString());
m_imageResources.Clear();
uint imgResLength = reader.ReadUInt32();
if (imgResLength <= 0)
return;
long startPosition = reader.BaseStream.Position;
while ((reader.BaseStream.Position - startPosition) < imgResLength)
{
ImageResource imgRes = new ImageResource(reader);
ResourceIDs resID = (ResourceIDs)imgRes.ID;
switch (resID)
{
case ResourceIDs.ResolutionInfo:
imgRes = new ResolutionInfo(imgRes);
break;
case ResourceIDs.Thumbnail1:
case ResourceIDs.Thumbnail2:
imgRes = new Thumbnail(imgRes);
break;
case ResourceIDs.AlphaChannelNames:
imgRes = new AlphaChannels(imgRes);
break;
}
m_imageResources.Add(imgRes);
}
//-----------------------------------------------------------------------
// make shure we are not on a wrong offset, so set the stream position
// manually
reader.BaseStream.Position = startPosition + imgResLength;
}
///////////////////////////////////////////////////////////////////////////
private void LoadLayerAndMaskInfo(BinaryReverseReader reader)
{
Debug.WriteLine("LoadLayerAndMaskInfo started at " + reader.BaseStream.Position.ToString());
uint layersAndMaskLength = reader.ReadUInt32();
if (layersAndMaskLength <= 0)
return;
long startPosition = reader.BaseStream.Position;
LoadLayers(reader);
LoadGlobalLayerMask(reader);
//-----------------------------------------------------------------------
//Debug.Assert(reader.BaseStream.Position == startPosition + layersAndMaskLength, "LoadLayerAndMaskInfo");
//-----------------------------------------------------------------------
// make shure we are not on a wrong offset, so set the stream position
// manually
reader.BaseStream.Position = startPosition + layersAndMaskLength;
}
///////////////////////////////////////////////////////////////////////////
private void LoadImage(BinaryReverseReader reader)
{
Debug.WriteLine("LoadImage started at " + reader.BaseStream.Position.ToString());
m_imageCompression = (ImageCompression)reader.ReadInt16();
m_imageData = new byte[m_channels][];
//---------------------------------------------------------------
if (m_imageCompression == ImageCompression.Rle)
{
// The RLE-compressed data is proceeded by a 2-byte data count for each row in the data,
// which we're going to just skip.
reader.BaseStream.Position += m_rows * m_channels * 2;
}
//---------------------------------------------------------------
int bytesPerRow = 0;
switch (m_depth)
{
case 1:
bytesPerRow = m_columns;//NOT Shure
break;
case 8:
bytesPerRow = m_columns;
break;
case 16:
bytesPerRow = m_columns * 2;
break;
}
//---------------------------------------------------------------
for (int ch = 0; ch < m_channels; ch++)
{
m_imageData[ch] = new byte[m_rows * bytesPerRow];
switch (m_imageCompression)
{
case ImageCompression.Raw:
reader.Read(m_imageData[ch], 0, m_imageData[ch].Length);
break;
case ImageCompression.Rle:
{
for (int i = 0; i < m_rows; i++)
{
int rowIndex = i * m_columns;
RleHelper.DecodedRow(reader.BaseStream, m_imageData[ch], rowIndex, bytesPerRow);
}
}
break;
default:
break;
}
}
}
///////////////////////////////////////////////////////////////////////////
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();
}
private void LoadGlobalLayerMask(BinaryReverseReader reader)
{
Debug.WriteLine("LoadGlobalLayerMask started at " + reader.BaseStream.Position.ToString());
uint maskLength = reader.ReadUInt32();
if (maskLength <= 0)
return;
GlobalLayerMaskData = reader.ReadBytes((int)maskLength);
}
private void LoadColorModeData(BinaryReverseReader reader)
{
Debug.WriteLine("LoadColorModeData started at " + reader.BaseStream.Position.ToString());
uint paletteLength = reader.ReadUInt32();
if (paletteLength > 0)
{
ColorModeData = reader.ReadBytes((int)paletteLength);
}
}
public void Load(Stream stream)
{
BinaryReverseReader reader = new BinaryReverseReader(stream);
LoadHeader(reader);
LoadColorModeData(reader);
LoadImageResources(reader);
LoadLayerAndMaskInfo(reader);
LoadImage(reader);
}