/// <summary>
/// The IFrame is a colour setting for EVERY Pixel - the dimensions can be guessed at
/// </summary>
/// <param name="f">I Framedef</param>
/// <returns>Parsed IFrame</returns>
private IFrameDef GetIFrame(FrameDef f)
{
IFrameDef result = new IFrameDef()
{
PalIndex = new List <byte>()
};
if (f.Type != FrameType.I)
{
return(result);
}
if (f.Count != f.Data.Length / 2)
{
Console.WriteLine($" ERROR IFrame length mismatch !! {f.Count} vs actual {f.Data.Length / 2}");
return(result);
}
Width = (ushort)Math.Sqrt(f.Count);
Height = (ushort)(f.Count / Width);
Console.WriteLine($" IFrame dimension {Width}x{Height}");
for (int i = 0; i < f.Count; i++)
{
result.PalIndex.Add(byte.Parse(f.Data.Substring(i * 2, 2), NumberStyles.AllowHexSpecifier));
}
return(result);
}
/// <summary>
/// The P Frame addresses specific pixels - but encodes the position in a single byte - or in 2 bytes
/// for 8bit - Row is in the high nybble, column is in the low nybble
/// </summary>
/// <param name="f">P Framedef</param>
/// <returns>Parsed PFrame</returns>
private PFrameDef GetPFrame(FrameDef f)
{
PFrameDef result = new PFrameDef()
{
Pix = new List <PFrameItem>()
};
bool b8 = (f.Count * 4 == f.Data.Length);
if (b8)
{
Console.WriteLine($" PFrame 8 bit position");
}
else
{
Console.WriteLine($" PFrame 16 bit position");
}
if (f.Type != FrameType.P)
{
return(result);
}
for (int i = 0; i < f.Count; i++)
{
PFrameItem item = new PFrameItem();
if (b8)
{
item.Y = byte.Parse(f.Data.Substring(i * 4, 1), NumberStyles.AllowHexSpecifier);
item.X = byte.Parse(f.Data.Substring(i * 4 + 1, 1), NumberStyles.AllowHexSpecifier);
item.Pal = byte.Parse(f.Data.Substring(i * 4 + 2, 2), NumberStyles.AllowHexSpecifier);
//Console.WriteLine($"{item.X},{item.Y} = {item.Pal}");
}
else // long 256 bits per line ?
{
var y = byte.Parse(f.Data.Substring(i * 6, 2), NumberStyles.AllowHexSpecifier);
var x = byte.Parse(f.Data.Substring(i * 6 + 2, 2), NumberStyles.AllowHexSpecifier);
// we know the width/height if we had an Iframe - or assume 18x18 ?
item.Y = (byte)((x + y * 256) / Width);
item.X = (byte)((x + y * 256) % Width);
item.Pal = byte.Parse(f.Data.Substring(i * 6 + 4, 2), NumberStyles.AllowHexSpecifier);
//Console.WriteLine($"{item.X},{item.Y} = {item.Pal} {f.Data.Substring(i * 6 + 2, 2)},{f.Data.Substring(i * 6, 2)}={f.Data.Substring(i * 6 + 4, 2)}");
}
result.Pix.Add(item);
}
return(result);
}