static void ProcessPacked(GifPacket packet, GsProcessor processor)
{
DataReader reader = new DataReader(packet.Data);
if (!packet.IgnorePrimField)
{
throw new NotSupportedException("Unsupported PRIM field");
}
for (int i = 0; i < packet.Loops; i++)
{
foreach (var register in packet.Registers)
{
switch (register)
{
case GifRegisters.APlusD:
ulong data = reader.ReadUInt64();
byte regAddress = (byte)(reader.ReadUInt64() & 0xFF);
processor.AddOperation(regAddress, data);
break;
default:
throw new NotSupportedException("Unsupported register");
}
}
}
}
public GifPacketList Convert(BinaryFormat source)
{
GifPacketList packets = new GifPacketList();
DataReader reader = new DataReader(source.Stream);
while (!source.Stream.EndOfStream)
{
GifPacket packet = new GifPacket();
ushort flags1 = reader.ReadUInt16();
packet.Loops = (short)(flags1 & 0x7FFF);
packet.FinalPacket = (flags1 >> 15) == 1;
reader.ReadUInt16(); // Reserved
uint flags2 = reader.ReadUInt32();
packet.IgnorePrimField = ((flags2 >> 15) & 1) == 0;
packet.Prim = (short)((flags2 >> 16) & 0x3FF);
packet.Kind = (GifPacketKind)((flags2 >> 26) & 0x3);
int numRegisters = (int)((flags2 >> 28) & 0xF);
if (numRegisters == 0)
{
numRegisters = 16;
}
packet.Registers = new GifRegisters[numRegisters];
ulong registers = reader.ReadUInt64();
for (int i = 0; i < numRegisters; i++)
{
packet.Registers[i] = (GifRegisters)((registers >> (i * 4)) & 0xF);
}
int dataSize = 0;
switch (packet.Kind)
{
case GifPacketKind.Packed:
dataSize = numRegisters * packet.Loops * 16;
break;
case GifPacketKind.RegList:
dataSize = numRegisters * packet.Loops * 8;
break;
case GifPacketKind.Image:
dataSize = packet.Loops * 16;
break;
}
packet.Data = new DataStream(source.Stream, source.Stream.Position, dataSize);
source.Stream.Seek(dataSize, SeekMode.Current);
packets.AddPacket(packet);
}
return(packets);
}
static void ProcessImage(GifPacket packet, GsProcessor processor)
{
DataReader reader = new DataReader(packet.Data);
for (int i = 0; i < packet.Loops; i++)
{
processor.AddOperation(0x54, reader.ReadUInt64());
processor.AddOperation(0x54, reader.ReadUInt64());
}
}
public void AddPacket(GifPacket packet)
{
packets.Add(packet);
}