Created
April 20, 2021 19:22
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Sawtooth
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| use portaudio as pa; | |
| use anyhow::Result; | |
| fn main() -> Result<()> { | |
| let pa = pa::PortAudio::new()?; | |
| let mut settings = pa.default_output_stream_settings(1, 44_100.0, 64u32)?; | |
| settings.flags = pa::stream_flags::CLIP_OFF; | |
| let mut phase = 0.0; | |
| let callback = move |pa::OutputStreamCallbackArgs { buffer, frames, .. }| { | |
| for i in 0..frames { | |
| buffer[i] = phase; | |
| phase += 0.01; | |
| if phase >= 1.0 { | |
| phase -= 2.0; | |
| } | |
| } | |
| pa::Continue | |
| }; | |
| let mut stream = pa.open_non_blocking_stream(settings, callback)?; | |
| stream.start()?; | |
| pa.sleep(3_000); | |
| stream.stop()?; | |
| stream.close()?; | |
| Ok(()) | |
| } |
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