Add arm64 Linux Support with Docker and CI

.github/workflows/cpal.yml

@@ -104,6 +104,21 @@ jobs:
       - name: Test all features for armv7
         run: cross test --target armv7-unknown-linux-gnueabihf --workspace --all-features --verbose
 
+  linux-check-and-test-arm64:
+    runs-on: ubuntu-24.04-arm
+    steps:
+      - name: Checkout sources
+        uses: actions/checkout@v4
+
+      - name: Build Docker container for arm64
+        run: docker build -f Dockerfile.arm64 -t cpal-arm64 .
+
+      - name: Run without features
+        run: docker run --rm cpal-arm64 cargo test --all --no-default-features --verbose
+
+      - name: Run all features
+        run: docker run --rm cpal-arm64 cargo test --all --all-features --verbose
+
   asmjs-wasm32-test:
     strategy:
       matrix:

CHANGELOG.md

@@ -5,6 +5,7 @@
 - CoreAudio: Detect default audio device lazily when building a stream, instead of during device enumeration.
 - iOS: Fix example by properly activating audio session.
 - WASAPI: Expose IMMDevice from WASAPI host Device.
+- ALSA: Added support for arm64 Linux development, introducing a new Dockerfile.
 
 # Version 0.16.0 (2025-06-07)
 

Dockerfile

@@ -1,8 +1,8 @@
 ARG CROSS_BASE_IMAGE
 FROM $CROSS_BASE_IMAGE
 
-ENV PKG_CONFIG_ALLOW_CROSS 1
-ENV PKG_CONFIG_PATH /usr/lib/arm-linux-gnueabihf/pkgconfig/
+ENV PKG_CONFIG_ALLOW_CROSS=1
+ENV PKG_CONFIG_PATH=/usr/lib/arm-linux-gnueabihf/pkgconfig/
 
 RUN dpkg --add-architecture armhf && \
     apt-get update && \

Dockerfile.arm64

@@ -0,0 +1,17 @@
+FROM rust:latest
+
+# Install required dependencies
+RUN apt-get update && \
+    apt-get install -y --no-install-recommends \
+        libasound2-dev \
+        libjack-jackd2-dev \
+        libjack-jackd2-0 \
+        pkg-config \
+        libdbus-1-dev
+
+# Set /cpal/ to working directory
+WORKDIR /cpal
+COPY . .
+
+# When running this Docker container, ensure ALSA devices are exposed 
+# using `--device /dev/snd` and `--group-add audio`