adds ProcessBuffer as rodio Source

Cargo.lock

@@ -13874,7 +13874,7 @@ dependencies = [
 [[package]]
 name = "rodio"
 version = "0.21.1"
-source = "git+https://github.com/RustAudio/rodio?branch=microphone#9af0d470b35c6e1ec6bca88d87bbf4bc52f1f018"
+source = "git+https://github.com/RustAudio/rodio?branch=microphone#bb560f30b17d330459b81afc918f2a4a123c41aa"
 dependencies = [
  "cpal",
  "dasp_sample",

crates/livekit_client/src/livekit_client/playback.rs

@@ -265,12 +265,12 @@ impl AudioStack {
         num_channels: u32,
     ) -> Result<()> {
         use crate::livekit_client::playback::source::RodioExt;
-        thread::spawn(|| {
+        thread::spawn(move || {
             let stream = rodio::microphone::MicrophoneBuilder::new()
-                .with_default_device()?
-                .with_default_config()?
+                .default_device()?
+                .default_config()?
                 .open_stream()?;
-            let stream = UniformSourceIterator::new(
+            let mut stream = UniformSourceIterator::new(
                 stream,
                 NonZero::new(1).expect("1 is not zero"),
                 NonZero::new(SAMPLE_RATE).expect("constant is not zero"),
@@ -281,20 +281,28 @@ impl AudioStack {
                 apm.lock()
                     .process_stream(&mut int_buffer, sample_rate as i32, num_channels as i32)
                     .unwrap(); // TODO dvdsk fix this
-                for (sample, processed) in buffer.iter().zip(&int_buffer) {
+                for (sample, processed) in buffer.iter_mut().zip(&int_buffer) {
                     *sample = (*processed).to_sample_();
                 }
             })
             .automatic_gain_control(1.0, 4.0, 0.0, 5.0);
 
             loop {
-                frame_tx.unbounded_send(AudioFrame {
-                    data: Cow::Owned(sampled),
-                    sample_rate,
-                    num_channels,
-                    samples_per_channel: sample_rate / 100,
-                })
+                let sampled = stream.by_ref().take(1000).map(|s| s.to_sample()).collect();
+
+                if frame_tx
+                    .unbounded_send(AudioFrame {
+                        data: Cow::Owned(sampled),
+                        sample_rate,
+                        num_channels,
+                        samples_per_channel: sample_rate / 100,
+                    })
+                    .is_err()
+                {
+                    break;
+                }
             }
+            Ok::<(), anyhow::Error>(())
         });
 
         Ok(())

crates/livekit_client/src/livekit_client/playback/source.rs

@@ -73,27 +73,21 @@ impl Source for LiveKitStream {
 }
 
 pub trait RodioExt: Source + Sized {
-    fn process_buffer<F>(
-        self,
-        callback: impl FnMut(&mut [rodio::Sample; 200]),
-    ) -> ProcessBuffer<Self, F>
+    fn process_buffer<F>(self, callback: F) -> ProcessBuffer<Self, F>
     where
-        F: FnMut(&mut [rodio::Sample]);
+        F: FnMut(&mut [rodio::Sample; 200]);
 }
 
 impl<S: Source> RodioExt for S {
-    fn process_buffer<F>(
-        self,
-        callback: impl FnMut(&mut [rodio::Sample; 200]),
-    ) -> ProcessBuffer<Self, F>
+    fn process_buffer<F>(self, callback: F) -> ProcessBuffer<Self, F>
     where
-        F: FnMut(&mut [rodio::Sample]),
+        F: FnMut(&mut [rodio::Sample; 200]),
     {
         ProcessBuffer {
             inner: self,
             callback,
-            in_buffer: [0.0; 200],
-            out_buffer: [0.0; 200],
+            buffer: [0.0; 200],
+            next: 200,
         }
     }
 }
@@ -105,8 +99,8 @@ where
 {
     inner: S,
     callback: F,
-    in_buffer: [rodio::Sample; 200],
-    out_buffer: std::array::IntoIter<rodio::Sample, N>,
+    buffer: [rodio::Sample; 200],
+    next: usize,
 }
 
 impl<S, F> Iterator for ProcessBuffer<S, F>
@@ -117,30 +111,41 @@ where
     type Item = rodio::Sample;
 
     fn next(&mut self) -> Option<Self::Item> {
-        for sample in &mut in_buffer {
-            *sample = self.inner.next()?;
+        self.next += 1;
+        if self.next < self.buffer.len() {
+            let sample = self.buffer[self.next];
+            return Some(sample);
         }
+
+        for sample in &mut self.buffer {
+            *sample = self.inner.next()?
+        }
+        (self.callback)(&mut self.buffer);
+
+        self.next = 0;
+        Some(self.buffer[0])
     }
 }
 
+// TODO dvdsk this should be a spanless Source
 impl<S, F> Source for ProcessBuffer<S, F>
 where
     S: Source + Sized,
     F: FnMut(&mut [rodio::Sample; 200]),
 {
     fn current_span_len(&self) -> Option<usize> {
-        todo!()
+        None
     }
 
     fn channels(&self) -> rodio::ChannelCount {
-        todo!()
+        self.inner.channels()
     }
 
     fn sample_rate(&self) -> rodio::SampleRate {
-        todo!()
+        self.inner.sample_rate()
     }
 
     fn total_duration(&self) -> Option<std::time::Duration> {
-        todo!()
+        self.inner.total_duration()
     }
 }