48 lines
1.7 KiB
Rust
48 lines
1.7 KiB
Rust
use itertools::Itertools;
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use rustysynth::SoundFont;
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use rustysynth::Synthesizer;
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use rustysynth::SynthesizerSettings;
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use std::fs::File;
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use std::sync::Arc;
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use tinyaudio::prelude::*;
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fn main() {
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// Load the SoundFont.
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let mut sf2 = File::open("FatBoy.sf2").unwrap();
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let sound_font = Arc::new(SoundFont::new(&mut sf2).unwrap());
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// Setup the audio output.
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let params = OutputDeviceParameters {
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channels_count: 2,
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sample_rate: 44100,
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channel_sample_count: 4410,
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};
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// Create the synthesizer.
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let settings = SynthesizerSettings::new(params.sample_rate as i32);
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let mut synthesizer = Synthesizer::new(&sound_font, &settings).unwrap();
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// Play some notes (middle C, E, G). // 16 channels actually // 60=c 64=e 67=g //up to 128velocity though dont go below 50 tbh
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synthesizer.note_on(0, 64, 100);
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//synthesizer.render(&mut left[..], &mut right[..]); // puts in a state of rendering the first loop of these notes
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// The recycled output buffer per-loop, could be in lamba but that'd be wasteful
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let sample_count = (params.channel_sample_count) as usize;
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let mut left: Vec<f32> = vec![0_f32; sample_count];
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let mut right: Vec<f32> = vec![0_f32; sample_count];
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// Start the audio output. Executes channel_sample_count per loop, sample_rate/channel_sample_count per second forever.
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let _device = run_output_device(params, {
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move |data| {
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synthesizer.render(&mut left[..], &mut right[..]); // put in a state of rendering the next loop of these notes
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for (i, value) in left.iter().interleave(right.iter()).enumerate() {
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data[i] = *value;
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}
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}
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})
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.unwrap();
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// Let it ride
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std::thread::sleep(std::time::Duration::from_secs(1));
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}
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