public AseFrame(AseFile file, AseReader reader)
{
AseFile = file;
NumBytesInFrame = reader.ReadDWORD();
MagicNumber = reader.ReadWORD();
NumChunks = reader.ReadWORD();
FrameDurationMs = reader.ReadWORD();
// Ingore next two bytes
reader.ReadBYTEs(2);
// Later versions of Aseprite may overwrite our number of chunks
var nchunks = reader.ReadDWORD();
if (NumChunks == 0xFFFF && NumChunks < nchunks)
{
NumChunks = nchunks;
}
// Read in old and new chunks
Chunks = Enumerable.Repeat <AseChunk>(null, (int)NumChunks).ToList();
for (int i = 0; i < NumChunks; i++)
{
Chunks[i] = ReadChunk(reader);
}
Debug.Assert(MagicNumber == 0xF1FA);
}
public AseFrameTagEntry(AseReader reader)
{
FromFrame = reader.ReadWORD();
ToFrame = reader.ReadWORD();
LoopAnimationDirection = (LoopAnimationDirection)reader.ReadBYTE();
// Ignore next 8 bytes
reader.ReadBYTEs(8);
ColorRGB = reader.ReadBYTEs(3);
// Ignore a byte
reader.ReadBYTE();
Name = reader.ReadSTRING();
// "OneShot" loop hack
if (Name.StartsWith("[") && Name.EndsWith("]"))
{
Name = Name.Remove(0, 1);
Name = Name.Remove(Name.Length - 1, 1);
IsOneShot = true;
}
else
{
IsOneShot = false;
}
}
private AseChunk ReadChunk(AseReader reader)
{
uint size = reader.ReadDWORD();
ChunkType type = (ChunkType)reader.ReadWORD();
return(ChunkFactory.ReadChunk(this, type, (int)(size - 6), reader));
}
public AseColorProfileChunk(AseFrame frame, AseReader reader)
: base(frame)
{
ColorProfileType = (ColorProfileType)reader.ReadWORD();
ColorProfileFlags = (ColorProfileFlags)reader.ReadWORD();
GammaFixed = reader.ReadDWORD();
// Next 8 bytes are reserved
reader.ReadBYTEs(8);
// fixit - what to do with color profile data?
if (ColorProfileType == ColorProfileType.EmbeddedICC)
{
var length = (int)reader.ReadDWORD();
reader.ReadBYTEs(length);
}
}
public AseColorProfileChunk(AseFrame frame, AseReader reader)
: base(frame)
{
ColorProfileType = (ColorProfileType)reader.ReadWORD();
ColorProfileFlags = (ColorProfileFlags)reader.ReadWORD();
GammaFixed = reader.ReadDWORD();
// Next 8 bytes are reserved
reader.ReadBYTEs(8);
// Do we need to do anything with color profile data?
// For now, just keep on truckin'
if (ColorProfileType == ColorProfileType.EmbeddedICC)
{
var length = (int)reader.ReadDWORD();
reader.ReadBYTEs(length);
}
}
public AseLayerChunk(AseFrame frame, AseReader reader)
: base(frame)
{
Flags = (LayerChunkFlags)reader.ReadWORD();
Type = (LayerType)reader.ReadWORD();
ChildLevel = reader.ReadWORD();
// Ignore next two words
reader.ReadWORD();
reader.ReadWORD();
BlendMode = (BlendMode)reader.ReadWORD();
Opacity = reader.ReadBYTE();
if ((frame.AseFile.Header.Flags & HeaderFlags.HasLayerOpacity) == 0)
{
// Assume full opacity
Opacity = 255;
}
// Ignore next three bytes
reader.ReadBYTEs(3);
Name = reader.ReadSTRING();
}
public AseHeader(AseReader reader)
{
FileSize = reader.ReadDWORD();
MagicNumber = reader.ReadWORD();
NumFrames = reader.ReadWORD();
Width = reader.ReadWORD();
Height = reader.ReadWORD();
ColorDepth = reader.ReadColorDepth();
Flags = (HeaderFlags)reader.ReadDWORD();
Speed = reader.ReadWORD();
// Next two dwords are ignored
reader.ReadDWORD();
reader.ReadDWORD();
TransparentIndex = reader.ReadBYTE();
// Next 3 bytes are ignored
reader.ReadBYTEs(3);
NumColors = reader.ReadWORD();
PixelWidth = reader.ReadBYTE();
PixelHeight = reader.ReadBYTE();
// Last 92 bytes are reserved for future use
reader.ReadBYTEs(92);
Debug.Assert(MagicNumber == 0xA5E0);
}
public AsePaletteEntry(AseReader reader)
{
Flags = reader.ReadWORD();
Red = reader.ReadBYTE();
Green = reader.ReadBYTE();
Blue = reader.ReadBYTE();
Alpha = reader.ReadBYTE();
if (HasName)
{
Name = reader.ReadSTRING();
}
}
public AseFrameTagsChunk(AseFrame frame, AseReader reader)
: base(frame)
{
NumTags = reader.ReadWORD();
// Ignore next 8 bytes
reader.ReadBYTEs(8);
Entries = Enumerable.Repeat <AseFrameTagEntry>(null, NumTags).ToList();
for (int i = 0; i < (int)NumTags; i++)
{
Entries[i] = new AseFrameTagEntry(reader);
}
}
public AseCelChunk(AseFrame frame, AseReader reader, int size)
: base(frame)
{
// Keep track of read position
var pos = reader.Position;
LayerIndex = reader.ReadWORD();
PositionX = reader.ReadSHORT();
PositionY = reader.ReadSHORT();
Opacity = reader.ReadBYTE();
CelType = (CelType)reader.ReadWORD();
// Ignore next 7 bytes
reader.ReadBYTEs(7);
if (CelType == CelType.Raw)
{
Width = reader.ReadWORD();
Height = reader.ReadWORD();
var bytesRead = reader.Position - pos;
PixelBytes = reader.ReadBYTEs(size - bytesRead);
}
else if (CelType == CelType.Linked)
{
FramePositionLink = reader.ReadWORD();
// Get a reference to our linked cell. It should be in a previous frame with a matching layer index.
Debug.Assert(Frame.AseFile.Frames.Count > FramePositionLink);
LinkedCel = Frame.AseFile.Frames[FramePositionLink].Chunks.OfType <AseCelChunk>().FirstOrDefault(c => c.LayerIndex == LayerIndex);
Debug.Assert(LinkedCel != null);
}
else if (CelType == CelType.CompressedImage)
{
Width = reader.ReadWORD();
Height = reader.ReadWORD();
var bytesRead = reader.Position - pos;
var compressed = reader.ReadBYTEs(size - bytesRead);
PixelBytes = ZlibDeflate(compressed);
}
}