public ResolutionInfo(ImageResource imgRes)
: base(imgRes)
{
BinaryReverseReader reader = imgRes.DataReader;
this.m_hRes = reader.ReadInt16();
this.m_hResUnit = (ResUnit)reader.ReadInt32();
this.m_widthUnit = (Unit)reader.ReadInt16();
this.m_vRes = reader.ReadInt16();
this.m_vResUnit = (ResUnit)reader.ReadInt32();
this.m_heightUnit = (Unit)reader.ReadInt16();
reader.Close();
}
internal Channel(BinaryReverseReader reader, Layer layer)
{
Debug.WriteLine("Channel started at " + reader.BaseStream.Position.ToString());
m_id = reader.ReadInt16();
Length = reader.ReadInt32();
m_layer = layer;
}
///////////////////////////////////////////////////////////////////////////
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;
}
///////////////////////////////////////////////////////////////////////////
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);
}
public Thumbnail(ImageResource imgRes)
: base(imgRes)
{
using (BinaryReverseReader reader = DataReader)
{
int format = reader.ReadInt32();
int width = reader.ReadInt32();
int height = reader.ReadInt32();
int widthBytes = reader.ReadInt32();
int size = reader.ReadInt32();
int compressedSize = reader.ReadInt32();
short bitPerPixel = reader.ReadInt16();
short planes = reader.ReadInt16();
if (format == 1)
{
byte[] imgData = reader.ReadBytes((int)(reader.BaseStream.Length - reader.BaseStream.Position));
using (MemoryStream strm = new MemoryStream(imgData))
{
m_thumbnailImage = (Bitmap)(Bitmap.FromStream(strm).Clone());
}
if (this.ID == 1033)
{
//// BGR
//for(int y=0;y<m_thumbnailImage.Height;y++)
// for (int x = 0; x < m_thumbnailImage.Width; x++)
// {
// Color c=m_thumbnailImage.GetPixel(x,y);
// Color c2=Color.FromArgb(c.B, c.G, c.R);
// m_thumbnailImage.SetPixel(x, y, c);
// }
}
}
else
{
m_thumbnailImage = new Bitmap(width, height, System.Drawing.Imaging.PixelFormat.Format24bppRgb);
}
}
}
public void Load(string filename)
{
using (FileStream stream = new FileStream(filename, FileMode.Open))
{
//binary reverse reader reads data types in big-endian format.
BinaryReverseReader reader = new BinaryReverseReader(stream);
#region "Headers"
//The headers area is used to check for a valid PSD file
Debug.WriteLine("LoadHeader started at " + reader.BaseStream.Position.ToString());
string signature = new string(reader.ReadChars(4));
if (signature != "8BPS")
{
throw new IOException("Bad or invalid file stream supplied");
}
//get the version number, should be 1 always
if ((m_version = reader.ReadInt16()) != 1)
{
throw new IOException("Invalid version number supplied");
}
//get rid of the 6 bytes reserverd in PSD format
reader.BaseStream.Position += 6;
//get the rest of the information from the PSD file.
//Everytime ReadInt16() is called, it reads 2 bytes.
//Everytime ReadInt32() is called, it reads 4 bytes.
m_channels = reader.ReadInt16();
m_rows = reader.ReadInt32();
m_columns = reader.ReadInt32();
m_depth = reader.ReadInt16();
m_colorMode = (ColorModes)reader.ReadInt16();
//by end of headers, the reader has read 26 bytes into the file.
#endregion //End Headers
#region "ColorModeData"
/// <summary>
/// If ColorMode is ColorModes.Indexed, the following 768 bytes will contain
/// a 256-color palette. If the ColorMode is ColorModes.Duotone, the data
/// following presumably consists of screen parameters and other related information.
/// Unfortunately, it is intentionally not documented by Adobe, and non-Photoshop
/// readers are advised to treat duotone images as gray-scale images.
/// </summary>
Debug.WriteLine("LoadColorModeData started at " + reader.BaseStream.Position.ToString());
uint paletteLength = reader.ReadUInt32(); //readUint32() advances the reader 4 bytes.
if (paletteLength > 0)
{
ColorModeData = reader.ReadBytes((int)paletteLength);
}
#endregion //End ColorModeData
#region "Loading Image Resources"
//This part takes extensive use of classes that I didn't write therefore
//I can't document much on what they do.
Debug.WriteLine("LoadingImageResources 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 sure we are not on a wrong offset, so set the stream position
// manually
reader.BaseStream.Position = startPosition + imgResLength;
#endregion //End LoadingImageResources
#region "Layer and Mask Info"
//We are gonna load up all the layers and masking of the PSD now.
Debug.WriteLine("LoadLayerAndMaskInfo - Part1 started at " + reader.BaseStream.Position.ToString());
uint layersAndMaskLength = reader.ReadUInt32();
if (layersAndMaskLength <= 0)
{
return;
}
//new start position
startPosition = reader.BaseStream.Position;
//Lets start by loading up all the layers
LoadLayers(reader);
//we are done the layers, load up the masks
LoadGlobalLayerMask(reader);
// make sure we are not on a wrong offset, so set the stream position
// manually
reader.BaseStream.Position = startPosition + layersAndMaskLength;
#endregion //End Layer and Mask info
#region "Loading Final Image"
//we have loaded up all the information from the PSD file
//into variables we can use later on.
//lets finish loading the raw data that defines the image
//in the picture.
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;
}
}
#endregion //End LoadingFinalImage
}
} //end Load()
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 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;
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 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;
}