cpal 0.15 uses ALSA as its Linux backend, which does not expose
PulseAudio/PipeWire monitor sources. The previous approach searched
for 'monitor' in cpal device names, which never matched on most
Linux systems, silently falling back to the microphone input.
This fix:
- Detects the correct monitor source via 'pactl get-default-sink'
and 'pactl list short sources'
- Sets PULSE_SOURCE env var before cpal initialization so PulseAudio's
ALSA plugin routes the default input through the monitor
- Preserves the original name-based search as fallback when pactl is
unavailable
- No new dependencies added
Tested on PipeWire 1.0.5 with Realtek ALC897 (HD-Audio Generic).
Cherry-picked and adapted from PR #89 and #214:
- Linux audio capture via PulseAudio/PipeWire monitor sources (cpal)
- AMD ROCm GPU support: HSA_OVERRIDE_GFX_VERSION env var, ROCm detection
- Whisper Turbo model (openai/whisper-large-v3-turbo) in all endpoints
- Cleaner Whisper language handling via generate_kwargs
- tauri::async_runtime::spawn fix to prevent panic on app shutdown
- Enable Linux (ubuntu-22.04) in release CI matrix
- Added support for capturing system audio on Windows using WASAPI with improved error handling and thread safety.
- Introduced the 'scopeguard' crate for better resource management during audio capture.
- Updated Cargo.toml to include 'scopeguard' and modified Windows-specific dependencies for enhanced functionality.
- Added a new test for validating audio capture output, ensuring the captured audio data is valid and non-empty.
- Removed console logging from the useSystemAudioCapture hook to streamline the code.
- Introduced error handling in the audio capture state to capture and report errors more effectively.
- Updated the cleanup logic to ensure proper handling of errors during audio capture on unmount.
- Enhanced error messages for better clarity when audio capture fails.
- Added the `com.apple.security.device.audio-input` entitlement to the Entitlements.plist for improved audio capture capabilities.
- Refactored the audio sample extraction logic in macOS to handle both interleaved and planar audio formats, improving sample processing and interleaving of channels.
- Updated the Assets.car file to reflect changes in the audio capture implementation.
- Introduced AtomicBool for stop signal handling to improve thread safety.
- Updated audio capture logic to utilize WASAPI more effectively, including error handling and buffer management.
- Enhanced the spawn mechanism for audio capture tasks to ensure compatibility with non-Send types.
- Added a new dependency on the 'windows' crate in Cargo.lock for improved functionality.
