void WriteChunk(ISerializer s, string chunkType, Action <ISerializer, int> serdes)
{
var chunk = IFFChunk.Serdes(0, new IFFChunk(chunkType, 0), s);
serdes(s, chunk.Length);
chunk.WriteLength(s);
}
public static IFFChunk Serdes(int _, IFFChunk c, ISerializer s)
{
if (s == null)
{
throw new ArgumentNullException(nameof(s));
}
c ??= new IFFChunk();
c.TypeId = s.FixedLengthString(nameof(TypeId), c.TypeId, 4);
c._lengthOffset = s.Offset;
c.Length = s.Int32BE(nameof(Length), c.Length);
return(c);
}
public ThumChunk(DjvuReader reader, IFFChunk parent, DjvuDocument document)
: base(reader, parent, document)
{
}
public FormChunk(DjvuReader reader, IFFChunk parent, DjvuDocument document)
: base(reader, parent, document)
{
// Nothing
}
public AnnotationChunk(DjvuReader reader, IFFChunk parent, DjvuDocument document)
: base(reader, parent, document)
{
}
public TextChunk(DjvuReader reader, IFFChunk parent, DjvuDocument document)
: base(reader, parent, document)
{
}
public AnnotationChunk(DjvuReader reader, IFFChunk parent, DjvuDocument document)
: base(reader, parent, document)
{
}
public static InterlacedBitmap Serdes(InterlacedBitmap img, ISerializer s)
{
if (s == null)
{
throw new ArgumentNullException(nameof(s));
}
img ??= new InterlacedBitmap();
var formatChunk = IFFChunk.Serdes(0, new IFFChunk(IFFChunkType.Format, 0), s);
if (formatChunk.TypeId != IFFChunkType.Format)
{
throw new NotSupportedException($"Invalid IFF header, expected \"FORM\", found \"{formatChunk.TypeId}\"");
}
var formatId = s.FixedLengthString("FormatId", IFFChunkType.PackedBitmap, 4);
if (formatId != IFFChunkType.PackedBitmap)
{
throw new NotSupportedException($"Invalid IFF header, expected \"PBM \", found \"{formatId}\"");
}
if (s.IsReading())
{
int i = 0;
while (s.BytesRemaining > 0)
{
var chunk = IFFChunk.Serdes(i, null, s);
switch (chunk.TypeId)
{
case IFFChunkType.BitmapHeader: img.SerdesHeader(s, chunk.Length); break;
case IFFChunkType.ColorMapping: img.SerdesPalette(s, chunk.Length); break;
case IFFChunkType.Hotspot: img.SerdesHotspot(s, chunk.Length); break;
case IFFChunkType.ColorRanges:
img.ColorRanges ??= new List <ColorRange>();
img.ColorRanges.Add(ColorRange.Serdes(img.ColorRanges.Count, null, s));
break;
case IFFChunkType.Thumbnail: img.SerdesThumbnail(s, chunk.Length); break;
case IFFChunkType.Body: img.SerdesPixels(s, chunk.Length); break;
default:
s.Bytes("Unk", null, chunk.Length);
break;
}
s.Check();
i++;
}
}
else
{
img.WriteChunk(s, IFFChunkType.BitmapHeader, (x, n) => img.SerdesHeader(x, n));
img.WriteChunk(s, IFFChunkType.ColorMapping, (x, n) => img.SerdesPalette(x, n));
img.WriteChunk(s, IFFChunkType.Hotspot, (x, n) => img.SerdesHotspot(x, n));
s.List(nameof(img.ColorRanges), img.ColorRanges, img.ColorRanges.Count, ColorRange.Serdes);
img.WriteChunk(s, IFFChunkType.Thumbnail, (x, n) => img.SerdesThumbnail(x, n));
img.WriteChunk(s, IFFChunkType.Body, (x, n) => img.SerdesPixels(x, n));
}
formatChunk.WriteLength(s);
return(img);
}
