public byte[] GetFrame(GanEntry entry)
{
int index = entry.Index;
if (Frames[index] != null)
{
return(Frames[index]);
}
byte[] ref_frame = null;
if (entry.Ref != 0)
{
var ref_entry = Dir.Cast <GanEntry>().FirstOrDefault(e => e.Id == entry.Ref);
if (ref_entry != null && ref_entry != entry)
{
ref_frame = GetFrame(ref_entry);
}
}
using (var stream = File.CreateStream(entry.Offset, entry.Size))
{
byte[] pixels;
if (ref_frame != null)
{
pixels = ref_frame.Clone() as byte[];
UnpackRefFrame(stream, pixels);
}
else
{
pixels = new byte[(int)Info.Width * (int)Info.Height * 3];
UnpackKeyFrame(stream, pixels);
}
Frames[index] = pixels;
return(pixels);
}
}
public override ArcFile TryOpen(ArcView file)
{
if (!file.View.AsciiEqual(4, "0100"))
{
return(null);
}
int count = file.View.ReadInt32(12);
if (!IsSaneCount(count))
{
return(null);
}
var base_name = Path.GetFileNameWithoutExtension(file.Name);
uint index_offset = 0x2010;
var dir = new List <Entry> (count);
for (int i = 0; i < count; ++i)
{
var entry = new GanEntry {
Name = string.Format("{0}#{1:D2}", base_name, i),
Type = "image",
Index = i,
Id = file.View.ReadInt32(index_offset),
Ref = file.View.ReadInt32(index_offset + 4),
Offset = file.View.ReadUInt32(index_offset + 8),
Size = file.View.ReadUInt32(index_offset + 12),
};
if (!entry.CheckPlacement(file.MaxOffset))
{
return(null);
}
dir.Add(entry);
index_offset += 0x10;
}
return(new GanFrameArchive(file, this, dir));
}