public void Write()
{
var entries = source.EnumerateSequences().ToList();
var header = new Structures.GafHeader
{
IdVersion = 0x00010100,
SequenceCount = (uint)entries.Count,
Unknown1 = 0
};
header.Write(writer);
// reserve space for the entry pointers
var entryPointersPos = writer.BaseStream.Position;
for (int i = 0; i < entries.Count; ++i)
{
writer.Write(0);
}
// write all the images
var writtenImageInfos = new List <WrittenImageInfo>();
foreach (var imageInfo in source.EnumerateImageInfos())
{
var pos = writer.BaseStream.Position;
CompressedFrameWriter.WriteCompressedImage(new MemoryStream(imageInfo.Data), this.writer, imageInfo.Width, (byte)imageInfo.TransparencyIndex);
writtenImageInfos.Add(new WrittenImageInfo
{
Width = imageInfo.Width,
Height = imageInfo.Height,
TransparencyIndex = imageInfo.TransparencyIndex,
Pointer = pos
});
}
// write all the sequences
var entryPointers = new List <long>();
foreach (var entry in entries)
{
entryPointers.Add(writer.BaseStream.Position);
this.WriteGafEntry(writtenImageInfos, entry);
}
// go back and fill in the entry pointers
var currPos = writer.BaseStream.Position;
writer.BaseStream.Seek(entryPointersPos, SeekOrigin.Begin);
foreach (var p in entryPointers)
{
writer.Write((uint)p);
}
// reset seek pos forward to after the last byte we wrote
writer.BaseStream.Seek(currPos, SeekOrigin.Begin);
}
/// <summary>
/// Reads the GAF data from the input stream.
/// </summary>
public void Read()
{
// read in header
Structures.GafHeader header = new Structures.GafHeader();
Structures.GafHeader.Read(this.reader, ref header);
this.adapter.BeginRead(header.SequenceCount);
// read in pointers to entries
int[] pointers = new int[header.SequenceCount];
for (int i = 0; i < header.SequenceCount; i++)
{
pointers[i] = this.reader.ReadInt32();
}
// read in the actual entries themselves
for (int i = 0; i < header.SequenceCount; i++)
{
this.reader.BaseStream.Seek(pointers[i], SeekOrigin.Begin);
this.ReadGafEntry();
}
this.adapter.EndRead();
}
public static void Read(BinaryReader b, ref GafHeader header)
{
header.IdVersion = b.ReadUInt32();
header.SequenceCount = b.ReadUInt32();
header.Unknown1 = b.ReadUInt32();
}
