Asio support for int24 (#927)

* added new sample format i24

* added output callback for i24

* added input callback i24

* minor cleanup

* added i24 to examples

* avoided allocations in callback

Author: nico-franco-gomez

examples/android.rs

@@ -5,7 +5,7 @@ extern crate cpal;
 
 use cpal::{
     traits::{DeviceTrait, HostTrait, StreamTrait},
-    SizedSample,
+    SizedSample, I24,
 };
 use cpal::{FromSample, Sample};
 
@@ -22,7 +22,7 @@ fn main() {
     match config.sample_format() {
         cpal::SampleFormat::I8 => run::<i8>(&device, &config.into()).unwrap(),
         cpal::SampleFormat::I16 => run::<i16>(&device, &config.into()).unwrap(),
-        // cpal::SampleFormat::I24 => run::<I24>(&device, &config.into()).unwrap(),
+        cpal::SampleFormat::I24 => run::<I24>(&device, &config.into()).unwrap(),
         cpal::SampleFormat::I32 => run::<i32>(&device, &config.into()).unwrap(),
         // cpal::SampleFormat::I48 => run::<I48>(&device, &config.into()).unwrap(),
         cpal::SampleFormat::I64 => run::<i64>(&device, &config.into()).unwrap(),

examples/beep.rs

@@ -1,7 +1,7 @@
 use clap::Parser;
 use cpal::{
     traits::{DeviceTrait, HostTrait, StreamTrait},
-    FromSample, Sample, SizedSample,
+    FromSample, Sample, SizedSample, I24,
 };
 
 #[derive(Parser, Debug)]
@@ -78,7 +78,7 @@ fn main() -> anyhow::Result<()> {
     match config.sample_format() {
         cpal::SampleFormat::I8 => run::<i8>(&device, &config.into()),
         cpal::SampleFormat::I16 => run::<i16>(&device, &config.into()),
-        // cpal::SampleFormat::I24 => run::<I24>(&device, &config.into()),
+        cpal::SampleFormat::I24 => run::<I24>(&device, &config.into()),
         cpal::SampleFormat::I32 => run::<i32>(&device, &config.into()),
         // cpal::SampleFormat::I48 => run::<I48>(&device, &config.into()),
         cpal::SampleFormat::I64 => run::<i64>(&device, &config.into()),

examples/synth_tones.rs

@@ -8,7 +8,7 @@ extern crate cpal;
 
 use cpal::{
     traits::{DeviceTrait, HostTrait, StreamTrait},
-    SizedSample,
+    SizedSample, I24,
 };
 use cpal::{FromSample, Sample};
 
@@ -98,6 +98,7 @@ where
     match config.sample_format() {
         cpal::SampleFormat::I8 => make_stream::<i8>(&device, &config.into()),
         cpal::SampleFormat::I16 => make_stream::<i16>(&device, &config.into()),
+        cpal::SampleFormat::I24 => make_stream::<I24>(&device, &config.into()),
         cpal::SampleFormat::I32 => make_stream::<i32>(&device, &config.into()),
         cpal::SampleFormat::I64 => make_stream::<i64>(&device, &config.into()),
         cpal::SampleFormat::U8 => make_stream::<u8>(&device, &config.into()),

src/host/asio/device.rs

@@ -209,10 +209,14 @@ pub(crate) fn convert_data_type(ty: &sys::AsioSampleType) -> Option<SampleFormat
     let fmt = match *ty {
         sys::AsioSampleType::ASIOSTInt16MSB => SampleFormat::I16,
         sys::AsioSampleType::ASIOSTInt16LSB => SampleFormat::I16,
-        sys::AsioSampleType::ASIOSTFloat32MSB => SampleFormat::F32,
-        sys::AsioSampleType::ASIOSTFloat32LSB => SampleFormat::F32,
+        sys::AsioSampleType::ASIOSTInt24MSB => SampleFormat::I24,
+        sys::AsioSampleType::ASIOSTInt24LSB => SampleFormat::I24,
         sys::AsioSampleType::ASIOSTInt32MSB => SampleFormat::I32,
         sys::AsioSampleType::ASIOSTInt32LSB => SampleFormat::I32,
+        sys::AsioSampleType::ASIOSTFloat32MSB => SampleFormat::F32,
+        sys::AsioSampleType::ASIOSTFloat32LSB => SampleFormat::F32,
+        sys::AsioSampleType::ASIOSTFloat64MSB => SampleFormat::F64,
+        sys::AsioSampleType::ASIOSTFloat64LSB => SampleFormat::F64,
         _ => return None,
     };
     Some(fmt)