void RTMFP::Encode(RTMFPEngine& aesEncrypt,PacketWriter& packet) {
// paddingBytesLength=(0xffffffff-plainRequestLength+5)&0x0F
int paddingBytesLength = (0xFFFFFFFF-packet.size()+5)&0x0F;
// Padd the plain request with paddingBytesLength of value 0xff at the end
while (paddingBytesLength-->0)
packet.write8(0xFF);
WriteCRC(packet);
// Encrypt the resulted request
aesEncrypt.process(packet.data()+4,(UInt8*)packet.data()+4,packet.size()-4);
}
void RTMFP::Pack(PacketWriter& packet,UInt32 farId) {
PacketReader reader(packet.data(),packet.size());
reader.next(4);
BinaryWriter(packet.data(),4).write32(reader.read32()^reader.read32()^farId);
}
void RTMFP::WriteCRC(PacketWriter& packet) {
// Compute the CRC and add it at the beginning of the request
PacketReader reader(packet.data(),packet.size());
reader.next(6);
BinaryWriter(packet.data()+4,2).write16(CheckSum(reader));
}