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#![warn(missing_docs)]
extern crate rodio;
pub mod music;
pub mod effect;
mod source;
use std::sync::RwLock;
use std::path::PathBuf;
use std::fmt;
use std::io;
use rodio::decoder::DecoderError;
use effect::DistanceModel;
use music::MusicTransition;
static mut RAW_STATE: *mut RwLock<State> = 0 as *mut RwLock<State>;
#[derive(Clone,Debug,PartialEq)]
pub struct Setting {
pub effect_dir: PathBuf,
pub music_dir: PathBuf,
pub global_volume: f32,
pub music_volume: f32,
pub effect_volume: f32,
pub distance_model: DistanceModel,
pub music_transition: MusicTransition,
pub short_effects: Vec<PathBuf>,
pub persistent_effects: Vec<PathBuf>,
pub musics: Vec<PathBuf>,
}
#[derive(Debug)]
pub enum InitError {
DoubleInit,
NoDefaultEndpoint,
FileOpenError(PathBuf, io::Error),
DecodeError(PathBuf, DecoderError),
}
impl fmt::Display for InitError {
fn fmt(&self, fmt: &mut fmt::Formatter) -> Result<(), fmt::Error> {
use self::InitError::*;
match *self {
DoubleInit => write!(fmt, "baal has already been initialized"),
NoDefaultEndpoint => write!(fmt, "no endpoint available"),
FileOpenError(ref source, ref error) => write!(fmt, "cannot open file {} : {}", source.to_string_lossy(), error),
DecodeError(ref source, ref error) => write!(fmt, "cannot decode file {} : {:?}", source.to_string_lossy(), error),
}
}
}
#[doc(hidden)]
pub struct State {
global_volume: f32,
endpoint: rodio::Endpoint,
music: music::State,
effect: effect::State,
}
impl State {
fn init(setting: &Setting) -> Result<State,InitError> {
let endpoint = try!(rodio::get_default_endpoint().ok_or(InitError::NoDefaultEndpoint));
Ok(State {
global_volume: setting.global_volume,
effect: try!(effect::State::init(setting, &endpoint)),
music: try!(music::State::init(setting)),
endpoint: endpoint,
})
}
fn reset(&mut self, setting: &Setting) -> Result<(),InitError> {
self.global_volume = setting.global_volume;
try!(self.music.reset(setting));
try!(self.effect.reset(setting, &self.endpoint));
Ok(())
}
}
pub fn init(setting: &Setting) -> Result<(), InitError> {
unsafe {
if !RAW_STATE.is_null() {
return Err(InitError::DoubleInit);
}
let box_state = Box::new(RwLock::new(try!(State::init(setting))));
RAW_STATE = Box::into_raw(box_state);
Ok(())
}
}
pub fn close() {
unsafe {
if !RAW_STATE.is_null() {
let mutex_state = Box::from_raw(RAW_STATE);
let _ = mutex_state.read().unwrap();
}
RAW_STATE = 0 as *mut RwLock<State>;
}
}
pub fn reset(setting: &Setting) -> Result<(),InitError> {
unsafe {
let mut state = (*RAW_STATE).write().unwrap();
try!(state.reset(setting));
Ok(())
}
}
pub fn set_global_volume(v: f32) {
let mut state = unsafe { (*RAW_STATE).write().unwrap() };
state.global_volume = v;
update_volume(&mut *state);
}
#[inline]
fn update_volume(state: &mut State) {
music::update_volume(state);
effect::update_volume(state);
}
pub fn global_volume() -> f32 {
let state = unsafe { (*RAW_STATE).read().unwrap() };
state.global_volume
}