cpal/examples/music.rs

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Rust
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extern crate cpal;
extern crate vorbis;
use std::io::BufReader;
fn main() {
let mut channel = cpal::Channel::new();
let mut decoder = vorbis::Decoder::new(BufReader::new(include_bin!("mozart_symfony_40.ogg")))
.unwrap();
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'main: for packet in decoder.packets() {
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let packet = packet.unwrap();
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let vorbis::Packet { channels, rate, data, .. } = packet;
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let mut data = data.as_slice();
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loop {
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if data.len() == 0 {
continue 'main;
}
let mut buffer = channel.append_data(channels, cpal::SamplesRate(rate as u32), data.len());
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let mut buffer = buffer.iter_mut();
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loop {
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let next_sample = match data.get(0) {
Some(s) => *s,
None => continue 'main
};
if let Some(output) = buffer.next() {
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*output = next_sample as u16;
data = data.slice_from(1);
} else {
break;
}
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}
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}
}
}