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use addon::AudioAddon;
use allegro::c_bool;
use allegro_audio_sys::*;
use internal::HasMixer;
use libc::*;
use mixer::{Mixer, MixerLike};
use properties::*;
macro_rules! set_impl
{
($self_: ident, $c_func: ident, $($var: expr),+) =>
{
unsafe{ if $c_func($self_.allegro_voice, $($var),+) != 0 { Ok(()) } else { Err(()) } }
}
}
macro_rules! get_impl {
($self_:ident, $c_func:ident, $dest_ty:ty) => {
unsafe { $c_func($self_.allegro_voice as *const _) as $dest_ty }
};
}
macro_rules! get_conv_impl {
($self_:ident, $c_func:ident, $conv:path) => {
unsafe { $conv($c_func($self_.allegro_voice as *const _)) }
};
}
macro_rules! get_bool_impl {
($self_:ident, $c_func:ident) => {
unsafe { $c_func($self_.allegro_voice as *const _) != 0 }
};
}
pub struct Sink
{
allegro_voice: *mut ALLEGRO_VOICE,
mixer: Mixer,
}
impl Sink
{
pub fn new(addon: &AudioAddon) -> Result<Sink, String>
{
Sink::new_custom(
addon,
44100,
AudioDepth::I16,
ChannelConf::Conf2,
AudioDepth::F32,
ChannelConf::Conf2,
)
}
pub fn new_custom(
addon: &AudioAddon, frequency: u32, voice_depth: AudioDepth, voice_chan_conf: ChannelConf,
mixer_depth: AudioDepth, mixer_chan_conf: ChannelConf,
) -> Result<Sink, String>
{
Mixer::new_custom(addon, frequency, mixer_depth, mixer_chan_conf)
.map_err(|_| "Could not create the mixer.".to_string())
.and_then(|mixer| Sink::new_with_mixer(frequency, voice_depth, voice_chan_conf, mixer))
}
pub fn new_with_mixer(
frequency: u32, voice_depth: AudioDepth, voice_chan_conf: ChannelConf, mixer: Mixer,
) -> Result<Sink, String>
{
let voice = unsafe {
al_create_voice(
frequency as c_uint,
voice_depth.get(),
voice_chan_conf.get(),
)
};
if voice.is_null()
{
Err("Could not create the voice".to_string())
}
else
{
if unsafe { al_attach_mixer_to_voice(mixer.get_allegro_mixer(), voice) != 0 }
{
Ok(Sink {
allegro_voice: voice,
mixer: mixer,
})
}
else
{
unsafe {
al_destroy_voice(voice);
}
Err("Could not attach mixer to voice".to_string())
}
}
}
pub fn get_allegro_voice(&self) -> *mut ALLEGRO_VOICE
{
self.allegro_voice
}
pub fn get_voice_frequency(&self) -> u32
{
get_impl!(self, al_get_voice_frequency, u32)
}
pub fn get_voice_position(&self) -> u32
{
get_impl!(self, al_get_voice_position, u32)
}
pub fn get_voice_channels(&self) -> ChannelConf
{
get_conv_impl!(self, al_get_voice_channels, ChannelConf::from_allegro)
}
pub fn get_voice_depth(&self) -> AudioDepth
{
get_conv_impl!(self, al_get_voice_depth, AudioDepth::from_allegro)
}
pub fn get_voice_playing(&self) -> bool
{
get_bool_impl!(self, al_get_voice_playing)
}
pub fn set_voice_playing(&self, playing: bool) -> Result<(), ()>
{
set_impl!(self, al_set_voice_playing, playing as c_bool)
}
pub fn set_voice_position(&self, pos: u32) -> Result<(), ()>
{
set_impl!(self, al_set_voice_position, pos as c_uint)
}
}
impl Drop for Sink
{
fn drop(&mut self)
{
unsafe {
al_detach_mixer(self.mixer.get_allegro_mixer());
al_destroy_voice(self.allegro_voice);
}
}
}
unsafe impl Send for Sink {}
unsafe impl Sync for Sink {}
impl HasMixer for Sink
{
fn get_mixer<'l>(&'l self) -> &'l Mixer
{
&self.mixer
}
fn get_mixer_mut<'l>(&'l mut self) -> &'l mut Mixer
{
&mut self.mixer
}
}
impl MixerLike for Sink {}