public override ImageData Read(IBinaryStream stream, ImageMetaData info)
{
var meta = (GcpMetaData)info;
stream.Position = 12;
var reader = new CmpReader(stream.AsStream, meta.PackedSize, meta.DataSize);
reader.Unpack();
// 24bpp bitmaps have non-standard stride
if (24 == meta.BPP && 0 != (meta.Width & 3) &&
(meta.Height * meta.Width * 3 + 54) == meta.DataSize)
{
int stride = (int)meta.Width * 3;
var pixels = new byte[stride * (int)meta.Height];
Buffer.BlockCopy(reader.Data, 54, pixels, 0, pixels.Length);
return(ImageData.CreateFlipped(meta, PixelFormats.Bgr24, null, pixels, stride));
}
using (var bmp = new MemoryStream(reader.Data))
{
var decoder = new BmpBitmapDecoder(bmp,
BitmapCreateOptions.None, BitmapCacheOption.OnLoad);
BitmapSource frame = decoder.Frames[0];
frame.Freeze();
return(new ImageData(frame, info));
}
}
public override ImageMetaData ReadMetaData(IBinaryStream stream)
{
var header = stream.ReadHeader(12);
int data_size = header.ToInt32(4);
int pack_size = header.ToInt32(8);
if (data_size < 54)
{
return(null);
}
var reader = new CmpReader(stream.AsStream, pack_size, 0x22); // BMP header
reader.Unpack();
var bmp = reader.Data;
if (bmp[0] != 'B' || bmp[1] != 'M')
{
return(null);
}
int width = LittleEndian.ToInt32(bmp, 0x12);
int height = LittleEndian.ToInt32(bmp, 0x16);
int bpp = LittleEndian.ToInt16(bmp, 0x1c);
return(new GcpMetaData
{
Width = (uint)width,
Height = (uint)height,
BPP = bpp,
DataSize = data_size,
PackedSize = pack_size,
});
}
public override ImageData Read(IBinaryStream stream, ImageMetaData info)
{
var meta = (GcpMetaData)info;
stream.Position = 12;
var reader = new CmpReader(stream.AsStream, meta.PackedSize, meta.DataSize);
reader.Unpack();
using (var bmp = new MemoryStream(reader.Data))
{
var decoder = new BmpBitmapDecoder(bmp,
BitmapCreateOptions.None, BitmapCacheOption.OnLoad);
BitmapSource frame = decoder.Frames[0];
frame.Freeze();
return(new ImageData(frame, info));
}
}
public override Stream OpenEntry(ArcFile arc, Entry entry)
{
var pentry = entry as PackedEntry;
if (null == pentry || !pentry.IsPacked ||
!arc.File.View.AsciiEqual(entry.Offset, "CMP1"))
{
return(arc.File.CreateStream(entry.Offset, entry.Size));
}
int unpacked_size = arc.File.View.ReadInt32(entry.Offset + 4);
using (var input = arc.File.CreateStream(entry.Offset + 12, entry.Size - 12))
{
var reader = new CmpReader(input, (int)entry.Size, unpacked_size);
reader.Unpack();
return(new BinMemoryStream(reader.Data, entry.Name));
}
}
public override ImageData Read(Stream stream, ImageMetaData info)
{
var meta = info as GcpMetaData;
if (null == meta)
{
throw new ArgumentException("GcpFormat.Read should be supplied with GcpMetaData", "info");
}
stream.Position = 12;
var reader = new CmpReader(stream, meta.PackedSize, meta.DataSize);
reader.Unpack();
using (var bmp = new MemoryStream(reader.Data, false))
{
var decoder = new BmpBitmapDecoder(bmp,
BitmapCreateOptions.None, BitmapCacheOption.OnLoad);
BitmapSource frame = decoder.Frames[0];
frame.Freeze();
return(new ImageData(frame, info));
}
}
