- Replace static parameters with AtomicF32 for thread-safe access
- Add methods to get Arc<AtomicF32> for release_coeff, attack_coeff, absolute_max_gain, and target_level
- Enable real-time modification of AGC parameters during playback
- Use Ordering::Relaxed for optimal low-latency performance
- Remove set_* methods in favor of direct atomic access
- Update internal methods to use atomic loads consistently
This change allows for dynamic adjustment of AGC parameters
without interrupting audio playback, improving real-time control
and responsiveness of the Automatic Gain Control system.
- Updated CircularBuffer implementation to allocate on the heap instead of the stack to prevent excessive stack usage (32KB) which can lead to stack overflow issues.
- Optimized index wrapping logic using bitwise operations, leveraging the fact that RMS_WINDOW_SIZE is a power of two for improved efficiency.
- Increase RMS_WINDOW_SIZE for more stable measurements of very low frequencies
- Replace MIN_ATTACK_COEFF with release_coeff for improved customizability
These changes provide better handling of low-frequency content and allow
developers more control over AGC behavior, particularly in attack/release
time adjustments.
Benchmarks use the music.wav file, we use *divan* as benchmark harnass.
The time needed to load the wav file is excluded from the benchmark
by preparing the data into a special test Source. That source also
enables converting between formats.
In the future *divan* will add support for structured (json) output.
Then we could integrate with the bencher service to generate benchmark
reports for all PR's and keep a timeseries of performance.
- Replace Vec-based RMS calculation with efficient CircularBuffer
- Add separate release_time for asymmetric gain control
- Implement MAX_PEAK_LEVEL constant to prevent clipping
- Revise gain calculation logic:
• Separate RMS and peak gain calculations
• Use RMS for general adjustments, peak for limiting
• Implement smoother transitions between gain levels
• Improve handling of edge cases (e.g., zero RMS)
- Improve code organization and documentation
