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https://github.com/FranLMSP/rmg-001.git
synced 2024-11-10 12:11:32 +00:00
Sample rate of 48000
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parent
060dbde966
commit
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28
src/sound.rs
28
src/sound.rs
@ -1,7 +1,7 @@
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use std::env;
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use std::ops::RangeInclusive;
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use std::sync::{Arc, Mutex};
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use cpal::{Stream, StreamConfig, Device, Sample};
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use cpal::{Stream, StreamConfig, Device, Sample, SampleRate};
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use cpal::traits::{DeviceTrait, HostTrait, StreamTrait};
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use crate::cpu::Cycles;
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use crate::utils::join_bytes;
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@ -34,6 +34,8 @@ pub const NR52_ADDRESS: u16 = 0xFF26;
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pub const WAVE_PATTERN_RAM: RangeInclusive<u16> = 0xFF30..=0xFF3F;
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pub const SAMPLE_RATE: u32 = 48000;
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const WAVE_DUTY_PATTERNS: [[u8; 8]; 4] = [
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[0, 0, 0, 0, 0, 0, 0, 1],
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[0, 0, 0, 0, 0, 0, 1, 1],
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@ -48,25 +50,15 @@ struct ChannelTwo {
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frequency_timer: u16,
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duty_position: usize,
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sample_timer: usize,
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sample_rate: usize,
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buffer_pos: usize,
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}
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impl ChannelTwo {
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pub fn new(device: &Device, config: &StreamConfig, sample_rate: usize) -> Self {
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pub fn new(device: &Device, config: &StreamConfig) -> Self {
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let mut count: usize = 0;
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// let mut count: f32 = 0.0;
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let buffer = Arc::new(Mutex::new(vec![0.0; sample_rate]));
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let buffer = Arc::new(Mutex::new(vec![0.0; SAMPLE_RATE as usize]));
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let buffer_clone = buffer.clone();
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let stream = device.build_output_stream(&config, move |data: &mut [f32], _| {
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/* for sample in data.iter_mut() {
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let y: f32 = ((count / (sample_rate as f32)) * 440.0 * 2.0 * 3.14159).sin().clamp(-1.0, 1.0);
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*sample = Sample::from(&y);
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count += 1.0;
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if count >= sample_rate as f32 {
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count = 0.0;
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}
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} */
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let b = buffer_clone.lock().unwrap();
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for sample in data.iter_mut() {
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*sample = Sample::from(&b[count]);
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@ -84,7 +76,6 @@ impl ChannelTwo {
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duty_position: 0,
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sample_timer: 0,
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buffer_pos: 0,
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sample_rate,
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buffer,
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}
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}
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@ -114,10 +105,10 @@ impl ChannelTwo {
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self.duty_position = 0;
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}
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}
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self.sample_timer = self.sample_timer.saturating_add(self.sample_rate);
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self.sample_timer = self.sample_timer.saturating_add(SAMPLE_RATE as usize);
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if self.sample_timer >= 4194304 {
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self.update_buffer(duty);
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self.sample_timer = 0;
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self.sample_timer -= 4194304;
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}
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}
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}
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@ -148,13 +139,12 @@ impl Sound {
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.expect("error while querying configs");
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let supported_config = supported_configs_range.next()
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.expect("no supported config?!")
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.with_max_sample_rate();
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.with_sample_rate(SampleRate(SAMPLE_RATE));
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// let err_fn = |err| eprintln!("an error occurred on the output audio stream: {}", err);
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let sample_rate = supported_config.sample_rate().0;
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let config: StreamConfig = supported_config.into();
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return Self {
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io_registers: [0; 48],
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channel_two: Some(ChannelTwo::new(&device, &config, sample_rate as usize)),
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channel_two: Some(ChannelTwo::new(&device, &config)),
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};
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}
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