static IUserDataAcceptor ParseCel(AseFile file, ColorType colorType,
BinaryReader reader, int chunkBytes, Frame frame)
{
var layerIndex = reader.ReadWord(); // 2
var x = reader.ReadInt16(); // 2
var y = reader.ReadInt16(); // 2
var opacity = reader.ReadByte() / 255.0f; // 1
var type = (CelType)reader.ReadWord(); // 2
reader.ReadBytes(7); // 7
Cel cel;
switch (type)
{
case CelType.Raw:
{
var celWidth = reader.ReadWord(); // 2
var celHeight = reader.ReadWord(); // 2
var colorBuffer = ToColorBuffer(colorType, reader.ReadBytes(chunkBytes - 6 - 16 - 4));
cel = new Cel(x, y, celWidth, celHeight, colorBuffer, layerIndex, opacity);
break;
}
case CelType.Linked:
{
var linkedFrame = reader.ReadWord();
cel = new Cel(linkedFrame, layerIndex);
break;
}
case CelType.Compressed:
{
var celWidth = reader.ReadWord();
var celHeight = reader.ReadWord();
var colorBuffer = ToColorBuffer(colorType, reader.ReadCompressedBytes(chunkBytes - 6 - 16 - 4));
cel = new Cel(x, y, celWidth, celHeight, colorBuffer, layerIndex, opacity);
break;
}
default:
{
throw new ArgumentException();
}
}
if (file.FindLayer(cel.LayerIndex) != null)
{
frame.AddCel(cel);
}
return(cel);
}
static void ParseFrameTags(AseFile file, BinaryReader reader)
{
var count = reader.ReadWord();
reader.ReadBytes(8);
for (int c = 0; c < count; ++c)
{
var fromFrame = reader.ReadWord();
var toFrame = reader.ReadWord();
var loopMode = (LoopMode)reader.ReadByte();
reader.ReadBytes(8);
reader.ReadBytes(3);
reader.ReadByte();
var name = reader.ReadUTF8();
if (name.StartsWith("//"))
{
// Commented tags are ignored
continue;
}
var originalName = name;
var tagIdx = name.IndexOf('#');
var nameInvalid = false;
var properties = new HashSet <string>();
if (tagIdx != -1)
{
name = name.Substring(0, tagIdx).Trim();
var possibleProperties = originalName.Substring(tagIdx).Split(' ');
foreach (var possibleProperty in possibleProperties)
{
if (possibleProperty.Length > 1 && possibleProperty[0] == '#')
{
properties.Add(possibleProperty.Substring(1));
}
else
{
nameInvalid = true;
}
}
}
if (nameInvalid)
{
Debug.LogWarning("Invalid frame name: " + originalName);
}
file.AddTag(new FrameTag(name, fromFrame, toFrame, loopMode, properties));
}
}
static AseFile ParseHeader(BinaryReader reader,
out int frameCount,
out ColorType colorType)
{
reader.ReadDWord(); // File size
_CheckMagicNumber(reader.ReadWord(), 0xA5E0);
frameCount = reader.ReadWord();
var width = reader.ReadWord();
var height = reader.ReadWord();
var file = new AseFile(width, height);
var colorDepth = reader.ReadWord();
if (colorDepth == 32)
{
colorType = ColorType.RGBA;
}
else if (colorDepth == 16)
{
colorType = ColorType.GrayScale;
}
else
{
throw new ArgumentException("Colour depth of " + colorDepth + " bits is not currently supported.");
}
reader.ReadDWord(); // Flags
reader.ReadWord(); // Deprecated speed
_CheckMagicNumber(reader.ReadDWord(), 0);
_CheckMagicNumber(reader.ReadDWord(), 0);
reader.ReadBytes(4);
reader.ReadWord();
reader.ReadBytes(2);
reader.ReadBytes(92);
return(file);
}
static Layer FindLayer(this AseFile file, int index)
{
return(FindLayerGlobally(file.Layers, index));
}
static IUserDataAcceptor ParseLayer(AseFile file,
BinaryReader reader,
Stack <LayerGroup> layerGroups,
int readLayerIndex)
{
IUserDataAcceptor lastUserdataAcceptor;
var flags = reader.ReadWord();
var visible = (flags & 0x1) != 0;
var referenceLayer = (flags & 0x20) != 0;
var layerType = (AseLayerType)reader.ReadWord();
var childLevel = reader.ReadWord(); // childLevel
if ((layerGroups.Count - 1) != (childLevel))
{
layerGroups.Pop();
if (layerGroups.Count == 0)
{
// workaround broken files ..
Debug.LogWarning("Layer Structure Parsing Error.");
layerGroups.Push(file.Layers);
}
}
reader.ReadWord();
reader.ReadWord();
var blendMode = (BlendMode)reader.ReadWord();
var opacity = reader.ReadByte() / 255.0f;
reader.ReadBytes(3);
var layerName = reader.ReadUTF8();
var type = layerName.StartsWith("@") ? LayerType.Meta : LayerType.Content;
Debug.Log("Reading layer definition " + readLayerIndex + ", " + layerName);
if (layerType == AseLayerType.Layer && !layerName.StartsWith("//") && !referenceLayer)
{
//layer.index = readLayerIndex;
var layer = new Layer(readLayerIndex, type, layerName, visible, blendMode, opacity);
if (layer.Type == LayerType.Meta || visible)
{
MetaLayerParser.Parse(layer);
layerGroups.Peek().Layers.Add(layer);
}
lastUserdataAcceptor = layer;
}
else if (layerType == AseLayerType.LayerGroup)
{
// is a layer group.
var layerGroup = new LayerGroup(readLayerIndex, layerName);
MetaLayerParser.Parse(layerGroup);
layerGroups.Peek().SubGroups.Add(layerGroup);
layerGroups.Push(layerGroup);
lastUserdataAcceptor = layerGroup;
}
else
{
lastUserdataAcceptor = new NoOpUserDataAcceptor();
}
return(lastUserdataAcceptor);
}