void Decompress(Stream stream, ImageHeader h)
{
// No extra work is required for empty frames
if (h.Size.Width == 0 || h.Size.Height == 0)
{
return;
}
if (recurseDepth > imageCount)
{
throw new InvalidDataException("Format20/40 headers contain infinite loop");
}
switch (h.Format)
{
case Format.Format20:
case Format.Format40:
{
if (h.RefImage.Data == null)
{
++recurseDepth;
Decompress(stream, h.RefImage);
--recurseDepth;
}
h.Data = CopyImageData(h.RefImage.Data);
Format40.DecodeInto(ReadCompressedData(stream, h), h.Data);
break;
}
case Format.Format80:
{
var imageBytes = new byte[Size.Width * Size.Height];
Format80.DecodeInto(ReadCompressedData(stream, h), imageBytes);
h.Data = imageBytes;
break;
}
default:
throw new InvalidDataException();
}
}
void Decompress(Stream stream, ImageHeader h)
{
if (recurseDepth > ImageCount)
{
throw new InvalidDataException("Format20/40 headers contain infinite loop");
}
switch (h.Format)
{
case Format.Format20:
case Format.Format40:
{
if (h.RefImage.Image == null)
{
++recurseDepth;
Decompress(stream, h.RefImage);
--recurseDepth;
}
h.Image = CopyImageData(h.RefImage.Image);
Format40.DecodeInto(ReadCompressedData(stream, h), h.Image);
break;
}
case Format.Format80:
{
var imageBytes = new byte[Width * Height];
Format80.DecodeInto(ReadCompressedData(stream, h), imageBytes);
h.Image = imageBytes;
break;
}
default:
throw new InvalidDataException();
}
}