public PicCommand(PicOpCode opcode)
{
OpCode = opcode;
if (SCIPicture.LOG)
{
Console.WriteLine($"Code {opcode}");
}
}
public SCIPicture(byte[] data)
{
commands = new List <PicCommand>();
using (var stream = new MemoryStream(data.Length))
{
stream.Write(data, 0, data.Length);
stream.Seek(0, SeekOrigin.Begin);
PicOpCode opcode = 0;
while (true)
{
var b = stream.Peek();
if (b >= 0xf0)
{
opcode = (PicOpCode)b;
stream.Seek(1, SeekOrigin.Current);
}
switch (opcode)
{
case PicOpCode.DISABLE_VISUAL:
case PicOpCode.DISABLE_PRIORITY:
case PicOpCode.DISABLE_CONTROL:
commands.Add(new PicCommand(opcode));
break;
case PicOpCode.SET_COLOR:
case PicOpCode.SET_CONTROL:
case PicOpCode.SET_PRIORITY:
case PicOpCode.SET_PATTERN:
commands.Add(new PicCommand(opcode, stream.ReadBytes(1))); break;
case PicOpCode.RELATIVE_MEDIUM_LINES: ReadRelativeMediumLines(stream); break;
case PicOpCode.RELATIVE_LONG_LINES: ReadRelativeLongLines(stream); break;
case PicOpCode.RELATIVE_SHORT_LINES: ReadRelativeShortLines(stream); break;
case PicOpCode.FILL: commands.Add(new PicCommand(opcode, stream.ReadBytes(3))); break;
case PicOpCode.OPX: ReadExt(stream); break;
case PicOpCode.END:
commands.Add(new PicCommand(opcode));
return;
default:
#if DEBUG
Debugger.Break();
#endif
throw new FormatException($"Unsupported opcode {opcode}");
}
}
}
}
public PicCommand(PicOpCode opcode, byte[] args)
{
OpCode = opcode;
Args = args;
if (SCIPicture.LOG)
{
Console.WriteLine($"Code {opcode} len: {Args.Length}");
}
}
public byte[] GetBytes()
{
PicOpCode prev = 0;
ByteBuilder bb = new ByteBuilder();
foreach (var cmd in commands)
{
if (cmd.OpCode != prev || cmd.OpCode == PicOpCode.OPX)
{
bb.AddByte((byte)cmd.OpCode);
}
cmd.Write(bb);
prev = cmd.OpCode;
}
return(bb.GetArray());
}
