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use array_macro::array;
use blip_buf::BlipBuf;
use crate::channel::{Channel, SharedChannel};
use crate::music::{Music, SharedMusic};
use crate::platform::{AudioCallback, Platform};
use crate::settings::{
CLOCK_RATE, NUM_CHANNELS, NUM_CLOCKS_PER_TICK, NUM_MUSICS, NUM_SAMPLES, NUM_SOUNDS, SAMPLE_RATE,
};
use crate::sound::{SharedSound, Sound};
use crate::Pyxel;
struct AudioCore {
blip_buf: BlipBuf,
channels: [SharedChannel; NUM_CHANNELS as usize],
}
pub struct Audio {
channels: [SharedChannel; NUM_CHANNELS as usize],
sounds: [SharedSound; NUM_SOUNDS as usize],
musics: [SharedMusic; NUM_MUSICS as usize],
}
impl Audio {
pub fn new<T: Platform>(platform: &mut T) -> Self {
let mut blip_buf = BlipBuf::new(NUM_SAMPLES);
blip_buf.set_rates(CLOCK_RATE as f64, SAMPLE_RATE as f64);
let channels = array![_ => Channel::new(); NUM_CHANNELS as usize];
let sounds = array![_ => Sound::new(); NUM_SOUNDS as usize];
let musics = array![_ => Music::new(); NUM_MUSICS as usize];
platform.start_audio(
SAMPLE_RATE,
NUM_SAMPLES,
new_shared_type!(AudioCore {
blip_buf,
channels: channels.clone(),
}),
);
Self {
channels,
sounds,
musics,
}
}
}
impl AudioCallback for AudioCore {
fn update(&mut self, out: &mut [i16]) {
let mut samples = self.blip_buf.read_samples(out, false);
while samples < out.len() {
for channel in &mut self.channels {
channel.lock().update(&mut self.blip_buf);
}
self.blip_buf.end_frame(NUM_CLOCKS_PER_TICK);
samples += self.blip_buf.read_samples(&mut out[samples..], false);
}
}
}
impl Pyxel {
pub fn channel(&self, channel_no: u32) -> SharedChannel {
self.audio.channels[channel_no as usize].clone()
}
pub fn sound(&self, sound_no: u32) -> SharedSound {
self.audio.sounds[sound_no as usize].clone()
}
pub fn music(&self, music_no: u32) -> SharedMusic {
self.audio.musics[music_no as usize].clone()
}
pub fn play_pos(&mut self, channel_no: u32) -> Option<(u32, u32)> {
self.audio.channels[channel_no as usize].lock().play_pos()
}
pub fn play(&mut self, channel_no: u32, sequence: &[u32], should_loop: bool) {
if sequence.is_empty() {
return;
}
let sounds = sequence
.iter()
.map(|sound_no| self.audio.sounds[*sound_no as usize].clone())
.collect();
self.audio.channels[channel_no as usize]
.lock()
.play(sounds, should_loop);
}
pub fn play1(&mut self, channel_no: u32, sound_no: u32, should_loop: bool) {
self.audio.channels[channel_no as usize]
.lock()
.play1(self.audio.sounds[sound_no as usize].clone(), should_loop);
}
pub fn playm(&mut self, music_no: u32, should_loop: bool) {
let music = self.audio.musics[music_no as usize].clone();
for i in 0..NUM_CHANNELS {
self.play(i, &music.lock().sequences[i as usize], should_loop);
}
}
pub fn stop(&mut self, channel_no: u32) {
self.audio.channels[channel_no as usize].lock().stop();
}
pub fn stop0(&mut self) {
for i in 0..NUM_CHANNELS {
self.stop(i);
}
}
}