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use std::mem;
use std::time::Duration;
use super::*;
use ::byteorder::{ByteOrder, NetworkEndian};
const OBLIGATE_POLYPHONE: u32 = 0xffffffff;
pub enum Command {
KeepAlive,
Ping{data: [u8; 32]},
Quit,
Play{sec: u32, usec: u32, freq: u32, amp: f32, voice: u32},
Caps{voices: u32, tp: [u8; 4], ident: [u8; 24]},
PCM{samples: [i16; 16]},
Unknown{data: [u8; 36]},
}
impl Command {
const SIZE: usize = 36;
fn duration(&self) -> Option<Duration> {
match *self {
Command::Play{sec, usec, ..} => Some(Duration::new(sec as u64, usec * 1000)),
_ => None,
}
}
fn pitch(&self) -> Option<Pitch> {
match *self {
Command::Play{freq, ..} => Some(Pitch::Freq(freq as f32)),
_ => None,
}
}
}
impl<'a> From<&'a [u8; 36]> for Command {
fn from(packet: &'a [u8; 36]) -> Command {
let mut fields_u32: [u32; 9] = unsafe { mem::uninitialized() };
let mut fields_f32: [f32; 9] = unsafe { mem::uninitialized() };
NetworkEndian::read_u32_into(packet, &mut fields_u32);
unsafe { NetworkEndian::read_f32_into_unchecked(packet, &mut fields_f32); }
match fields_u32[0] {
0 => Command::KeepAlive,
1 => {
let mut data: [u8; 32] = unsafe { mem::uninitialized() };
data.copy_from_slice(&packet[4..]);
Command::Ping{data: data}
}
_ => {
let mut data: [u8; 36] = unsafe { mem::uninitialized() };
data.copy_from_slice(packet);
Command::Unknown{data: data}
}
}
}
}
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