private void WriteFrameInfo(List <WrittenImageInfo> imageInfos, GafFrameInfo info)
{
var header = new Structures.GafFrameInfo
{
Unknown2 = 0,
Unknown3 = (uint)info.Unknown3, // Cavedog gafs sometimes have a value here but we don't know what it does.
};
if (info.ImageIndex.HasValue)
{
var imageInfo = imageInfos[info.ImageIndex.Value];
header.LayerCount = 0;
header.OriginX = (short)info.OriginX;
header.OriginY = (short)info.OriginY;
header.Width = (ushort)imageInfo.Width;
header.Height = (ushort)imageInfo.Height;
header.Compressed = true;
header.TransparencyIndex = (byte)imageInfo.TransparencyIndex;
header.PtrFrameData = (uint)imageInfo.Pointer;
}
else
{
var rect = info.Layers.Select(layer => new Rect
{
X = -layer.OriginX,
Y = -layer.OriginY,
Width = imageInfos[layer.ImageIndex].Width,
Height = imageInfos[layer.ImageIndex].Height
}).Aggregate(Rect.Merge);
header.LayerCount = (ushort)info.Layers.Count;
header.OriginX = (short)(-rect.X);
header.OriginY = (short)(-rect.Y);
header.Width = (ushort)rect.Width;
header.Height = (ushort)rect.Height;
header.Compressed = false;
header.TransparencyIndex = 9;
header.PtrFrameData = (uint)(writer.BaseStream.Position + 24);
}
header.Write(writer);
if (!info.ImageIndex.HasValue)
{
var startPos = writer.BaseStream.Position + (4 * info.Layers.Count);
for (var i = 0; i < info.Layers.Count; ++i)
{
writer.Write((uint)(startPos + (24 * i)));
}
var layerPointers = new List <long>();
foreach (var layer in info.Layers)
{
WriteLayerInfo(imageInfos, layer);
}
}
}
public static void Read(BinaryReader b, ref GafFrameInfo e)
{
e.Width = b.ReadUInt16();
e.Height = b.ReadUInt16();
e.OriginX = b.ReadInt16();
e.OriginY = b.ReadInt16();
e.TransparencyIndex = b.ReadByte();
e.Compressed = b.ReadBoolean();
e.LayerCount = b.ReadUInt16();
e.Unknown2 = b.ReadUInt32();
e.PtrFrameData = b.ReadUInt32();
e.Unknown3 = b.ReadUInt32();
}
private void LoadFrame(ref Structures.GaFrameListItem entry)
{
// read in the frame data table
Structures.GafFrameInfo d = new Structures.GafFrameInfo();
Structures.GafFrameInfo.Read(this.reader, ref d);
this.adapter.BeginFrame(ref entry, ref d);
// read the actual frame image
this.reader.BaseStream.Seek(d.PtrFrameData, SeekOrigin.Begin);
if (d.LayerCount > 0)
{
// read in the pointers
uint[] framePointers = new uint[d.LayerCount];
for (int i = 0; i < d.LayerCount; i++)
{
framePointers[i] = this.reader.ReadUInt32();
}
// read in each frame
for (int i = 0; i < d.LayerCount; i++)
{
this.reader.BaseStream.Seek(framePointers[i], SeekOrigin.Begin);
var dummyEntry = new Structures.GaFrameListItem {
PtrFrameInfo = 0, Duration = 0
};
this.LoadFrame(ref dummyEntry);
}
}
else
{
byte[] data;
if (d.Compressed)
{
data = CompressedFrameReader.ReadCompressedImage(this.reader, d.Width, d.Height, d.TransparencyIndex);
}
else
{
data = this.ReadUncompressedImage(d.Width, d.Height);
}
this.adapter.SetFrameData(data);
}
this.adapter.EndFrame();
}
private void WriteLayerInfo(List <WrittenImageInfo> imageInfos, GafLayerInfo info)
{
var imageInfo = imageInfos[info.ImageIndex];
var header = new Structures.GafFrameInfo
{
OriginX = (short)info.OriginX,
OriginY = (short)info.OriginY,
Unknown2 = 0,
Unknown3 = (uint)info.Unknown3, // Cavedog gafs sometimes have a value here but we don't know what it does.
LayerCount = 0,
Width = (ushort)imageInfo.Width,
Height = (ushort)imageInfo.Height,
Compressed = true,
TransparencyIndex = (byte)imageInfo.TransparencyIndex,
PtrFrameData = (uint)imageInfo.Pointer,
};
header.Write(writer);
}
public void BeginFrame(ref Gaf.Structures.GaFrameListItem entry, ref Gaf.Structures.GafFrameInfo data)
{
if (frameDepth > 0)
{
this.currentLayerInfo = data;
var layerJson = new GafLayerJson
{
OriginX = data.OriginX,
OriginY = data.OriginY,
TransparencyIndex = data.TransparencyIndex,
Unknown3 = data.Unknown3,
};
entries.Last().Frames.Last().Layers.Add(layerJson);
}
else
{
this.currentFrameInfo = data;
var frameJson = new GafFrameJson
{
Duration = entry.Duration,
Unknown3 = data.Unknown3,
};
if (data.LayerCount > 0)
{
frameJson.Layers = new List <GafLayerJson>();
}
else
{
frameJson.OriginX = data.OriginX;
frameJson.OriginY = data.OriginY;
frameJson.TransparencyIndex = data.TransparencyIndex;
}
entries.Last().Frames.Add(frameJson);
}
frameDepth += 1;
}