private void ReadPsd()
{
this.HasCapability = 0;
try
{
using (Stream stream = this._FileInfo.OpenRead())
{
PSD_HEADER psd_header = ByteArrayHelper.ReadStructureFromStream<PSD_HEADER>(stream);
if (Encoding.ASCII.GetString(psd_header.Signature) != "8BPS")
{
throw new InvalidDataException();
}
this.ImageSize = new Size(Swap(psd_header.Columns), Swap(psd_header.Rows));
this.BPP = Swap(psd_header.Depth) * Swap(psd_header.Channels);
switch (Swap(psd_header.Mode))
{
case 0:
case 2:
this.Space = ColorSpace.Indexed;
break;
case 1:
this.Space = ColorSpace.Grayscale;
break;
case 3:
this.Space = ColorSpace.RGB;
break;
case 4:
this.Space = ColorSpace.CMYK;
break;
}
this.HasCapability |= PsdCapability.BPP | PsdCapability.ColorSpace | PsdCapability.Size;
using (BinaryReader reader = new BinaryReader(stream, Encoding.ASCII))
{
int num4;
int num = Swap(reader.ReadInt32());
stream.Seek((long) num, SeekOrigin.Current);
for (num = Swap(reader.ReadInt32()); num > 0; num -= num4 + Math.Sign((int) (num4 % 2)))
{
string str = new string(reader.ReadChars(4));
num -= 4;
if (str != "8BIM")
{
goto Label_02E9;
}
ushort num2 = Swap(reader.ReadUInt16());
num -= 2;
byte count = reader.ReadByte();
if (count > 0)
{
reader.ReadChars(count);
}
else
{
reader.ReadByte();
}
num -= Math.Max(2, 1 + count);
num4 = Swap(reader.ReadInt32());
int num5 = 0;
switch (num2)
{
case 0x3ed:
{
RESOURCE_RESOLUTION structure = ByteArrayHelper.ReadStructureFromStream<RESOURCE_RESOLUTION>(stream);
this.DPI = new Size(Swap(structure.hRes), Swap(structure.vRes));
this.HasCapability |= PsdCapability.DPI;
num5 = Marshal.SizeOf(structure);
break;
}
case 0x40c:
{
RESOURCE_THUMBNAIL resource_thumbnail = ByteArrayHelper.ReadStructureFromStream<RESOURCE_THUMBNAIL>(stream);
if (Swap(resource_thumbnail.nFormat) == 1)
{
this.ThumbnailStreamStart = stream.Position;
this.ThumbnailStreamSize = Swap(resource_thumbnail.nCompressedSize);
this.HasCapability |= PsdCapability.Thumbnail;
}
num5 = Marshal.SizeOf(resource_thumbnail);
break;
}
}
Debug.Assert(num5 <= num4);
stream.Seek((long) ((num4 + Math.Sign((int) (num4 % 2))) - num5), SeekOrigin.Current);
}
}
}
}
catch (Exception exception)
{
PropertyProviderManager.ProviderTrace.TraceException(TraceEventType.Error, exception);
}
Label_02E9:
if (!this.CheckCapability(PsdCapability.Thumbnail))
{
this._FileInfo = null;
}
}
public PsdPropertyBag(FileInfo fileInfo)
{
this._FileInfo = fileInfo;
this.HasCapability = PsdCapability.Dirty | PsdCapability.Thumbnail | PsdCapability.DPI | PsdCapability.BPP | PsdCapability.ColorSpace | PsdCapability.Size;
}
private bool CheckCapability(PsdCapability capability)
{
return ((this.HasCapability & capability) == capability);
}
private Image ReadThumbnail()
{
try
{
using (Stream stream = this._FileInfo.OpenRead())
{
stream.Position = this.ThumbnailStreamStart;
using (Stream stream2 = new SubStream(stream, (long) this.ThumbnailStreamSize))
{
using (Image image = Image.FromStream(stream2))
{
return new Bitmap(image);
}
}
}
}
catch (Exception exception)
{
PropertyProviderManager.ProviderTrace.TraceException(TraceEventType.Error, exception);
this.HasCapability &= ~PsdCapability.Thumbnail;
this._FileInfo = null;
base.ResetAvailableSet();
}
return null;
}
