Scorched Earth

1 files changed, 147 insertions, 0 deletions

diff --git a/klangfarbrs/src/ignore b/klangfarbrs/src/ignore
new file mode 100644
index 0000000..6c52a4b
--- /dev/null
+++ b/klangfarbrs/src/ignore
@@ -0,0 +1,147 @@
+
+pub mod test {
+    use cpal;
+    use cpal::traits::{DeviceTrait, HostTrait, StreamTrait};
+    use dasp::{Sample};
+    use dasp_signal::{self as signal, Signal};
+    use std::sync::mpsc;
+
+    pub fn test() -> Result<(), anyhow::Error> {
+        let host = cpal::default_host();
+        let device = host
+            .default_output_device()
+            .expect("failed to find a default output device");
+        let config = device.default_output_config()?;
+
+        match config.sample_format() {
+            cpal::SampleFormat::F32 => run::<f32>(&device, &config.into())?,
+            cpal::SampleFormat::I16 => run::<i16>(&device, &config.into())?,
+            cpal::SampleFormat::U16 => run::<u16>(&device, &config.into())?,
+        }
+
+        Ok(())
+    }
+
+    fn run<T>(device: &cpal::Device, config: &cpal::StreamConfig) -> Result<(), anyhow::Error>
+    where
+        T: cpal::Sample,
+    {
+        // Create a signal chain to play back 1 second of each oscillator at A4.
+        let base_freq = 440.0;
+        let multipliers = [0.8, 1.0, 1.2, 1.7, 2.9, 4.5, 8.8, 1.9, 3.6];
+        let freqs = multipliers.map(|m| signal::rate(config.sample_rate.0 as f64).const_hz(base_freq * m));
+        let _sines = freqs.map(|f| f.clone().sine());
+
+        // Shitty naive implementation until Rust clicks.
+        let hz_0 = signal::rate(config.sample_rate.0 as f64).const_hz(base_freq * 0.8);
+        let hz_1 = signal::rate(config.sample_rate.0 as f64).const_hz(base_freq * 1.0);
+        let hz_2 = signal::rate(config.sample_rate.0 as f64).const_hz(base_freq * 1.2);
+        let hz_3 = signal::rate(config.sample_rate.0 as f64).const_hz(base_freq * 1.7);
+        let hz_4 = signal::rate(config.sample_rate.0 as f64).const_hz(base_freq * 2.9);
+        let hz_5 = signal::rate(config.sample_rate.0 as f64).const_hz(base_freq * 4.5);
+        let hz_6 = signal::rate(config.sample_rate.0 as f64).const_hz(base_freq * 8.8);
+        let hz_7 = signal::rate(config.sample_rate.0 as f64).const_hz(base_freq * 1.9);
+        let hz_8 = signal::rate(config.sample_rate.0 as f64).const_hz(base_freq * 3.6);
+
+        let sine_0 = hz_0.clone().sine().scale_amp(0.03);
+        let sine_1 = hz_1.clone().sine();
+        let sine_2 = hz_2.clone().sine().scale_amp(0.8);
+        let sine_3 = hz_3.clone().sine().scale_amp(0.004);
+        let sine_4 = hz_4.clone().sine().scale_amp(0.03);
+        let sine_5 = hz_5.clone().sine().scale_amp(0.02);
+        let sine_6 = hz_6.clone().sine().scale_amp(0.001);
+        let sine_7 = hz_7.clone().sine().scale_amp(0.006);
+        let sine_8 = hz_8.clone().sine().scale_amp(0.05);
+
+
+        // let hz = signal::rate(config.sample_rate.0 as f64).const_hz(440.0);
+        let one_sec = config.sample_rate.0 as usize;
+
+        // let mut sin_a = hz
+        //     .clone()
+        //     .sine();
+
+        // let mut sin_b = hz_b
+        //     .clone()
+        //     .sine();
+
+        let mut synth = sine_0
+            .add_amp(sine_1)
+            .add_amp(sine_2)
+            .add_amp(sine_3)
+            .add_amp(sine_4)
+            .add_amp(sine_5)
+            .add_amp(sine_6)
+            .add_amp(sine_7)
+            .add_amp(sine_8)
+            .take(one_sec)
+            .map(|s| s.to_sample::<f32>() * 0.2);
+
+        // let mut synth = sines[0]
+        //     .add_amp(sines[1])
+        //     .add_amp(sines[2])
+        //     .add_amp(sines[3])
+        //     .add_amp(sines[4])
+        //     .add_amp(sines[5])
+        //     .add_amp(sines[6])
+        //     .add_amp(sines[7])
+        //     .add_amp(sines[8])
+        //     .take(one_sec)
+        //     .map(|s| s.to_sample::<f32>() * 0.2);
+        // let mut synth = sin_a.add_amp(sin_b).take(one_sec).map(|s| s.to_sample::<f32>() * 0.2);
+        // let mut synth = hz
+        //     .clone()
+        //     .sine()
+        //     .take(one_sec)
+        //     .chain(hz.clone().saw().take(one_sec))
+        //     .chain(hz.clone().square().take(one_sec))
+        //     .chain(hz.clone().noise_simplex().take(one_sec))
+        //     .chain(signal::noise(0).take(one_sec))
+        //     .map(|s| s.to_sample::<f32>() * 0.2);
+
+        // A channel for indicating when playback has completed.
+        let (complete_tx, complete_rx) = mpsc::sync_channel(1);
+
+        // Create and run the stream.
+        let err_fn = |err| eprintln!("an error occurred on stream: {}", err);
+        let channels = config.channels as usize;
+        let stream = device.build_output_stream(
+            config,
+            move |data: &mut [T], _: &cpal::OutputCallbackInfo| {
+                write_data(data, channels, &complete_tx, &mut synth)
+            },
+            err_fn,
+        )?;
+        stream.play()?;
+
+        // Wait for playback to complete.
+        complete_rx.recv().unwrap();
+        stream.pause()?;
+
+        Ok(())
+    }
+
+    fn write_data<T>(
+        output: &mut [T],
+        channels: usize,
+        complete_tx: &mpsc::SyncSender<()>,
+        signal: &mut dyn Iterator<Item = f32>,
+    ) where
+        T: cpal::Sample,
+    {
+        for frame in output.chunks_mut(channels) {
+            let sample = match signal.next() {
+                None => {
+                    complete_tx.try_send(()).ok();
+                    0.0
+                }
+                Some(sample) => sample,
+            };
+            let value: T = cpal::Sample::from::<f32>(&sample);
+            for sample in frame.iter_mut() {
+                *sample = value;
+            }
+        }
+    }
+
+}