public override Stream OpenEntry(ArcFile arc, Entry entry)
{
var abm = arc as AbmArchive;
var frame = entry as AbmEntry;
if (null == abm || null == frame)
{
return(arc.File.CreateStream(entry.Offset, entry.Size));
}
var frame_info = abm.FrameInfo;
if (frame.Index != 0)
{
frame_info = frame_info.Clone();
frame_info.FrameOffset = (uint)frame.Offset;
}
using (var input = arc.File.CreateStream(0, (uint)arc.File.MaxOffset))
using (var reader = new AbmReader(input, frame_info))
{
// emulate TGA image
var header = new byte[0x12];
header[2] = 2;
LittleEndian.Pack((ushort)frame_info.Width, header, 0xC);
LittleEndian.Pack((ushort)frame_info.Height, header, 0xE);
header[0x10] = (byte)reader.BPP;
header[0x11] = 0x20;
var pixels = reader.Unpack();
return(new PrefixStream(header, new MemoryStream(pixels)));
}
}
public override ImageData Read(Stream stream, ImageMetaData info)
{
var meta = info as AbmImageData;
if (null == meta)
{
throw new ArgumentException("AbmFormat.Read should be supplied with AbmMetaData", "info");
}
using (var reader = new AbmReader(stream, meta))
{
var pixels = reader.Unpack();
PixelFormat format = 32 == reader.BPP ? PixelFormats.Bgra32 : PixelFormats.Bgr24;
return(ImageData.Create(info, format, null, pixels));
}
}
public override Stream OpenEntry(ArcFile arc, Entry entry)
{
var abm = arc as AbmArchive;
var frame = entry as AbmEntry;
if (null == abm || null == frame)
return arc.File.CreateStream (entry.Offset, entry.Size);
var frame_info = abm.FrameInfo;
if (frame.Index != 0)
{
frame_info = frame_info.Clone();
frame_info.FrameOffset = (uint)frame.Offset;
}
using (var input = arc.File.CreateStream (0, (uint)arc.File.MaxOffset))
using (var reader = new AbmReader (input, frame_info))
{
// emulate TGA image
var header = new byte[0x12];
header[2] = 2;
LittleEndian.Pack ((ushort)frame_info.Width, header, 0xC);
LittleEndian.Pack ((ushort)frame_info.Height, header, 0xE);
header[0x10] = (byte)reader.BPP;
header[0x11] = 0x20;
var pixels = reader.Unpack();
return new PrefixStream (header, new MemoryStream (pixels));
}
}