diff options
| author | skal <pascal.massimino@gmail.com> | 2026-02-15 23:56:43 +0100 |
|---|---|---|
| committer | skal <pascal.massimino@gmail.com> | 2026-02-15 23:56:43 +0100 |
| commit | 5c7feffd3749ce4b355d0db6334cf39ca94d8d82 (patch) | |
| tree | 7105aea12d0367208a37777cf53b348f35a66dad /src/audio/audio_backend.h | |
| parent | e21127a3fc4797805d49ae2d95fc7ed6f94ac456 (diff) | |
perf(audio): smooth playback time and RMS-based peak at 60Hz
Interpolates audio playback time between callbacks using CLOCK_MONOTONIC
for smooth 60Hz updates instead of coarse 8-10Hz steps.
Replaces artificial peak decay with true RMS calculation over 50ms
window. Ring buffer computes RMS directly on internal buffer without
copies for efficiency.
All backends updated with get_callback_state() interface for time
interpolation. Tests passing (34/34).
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
Diffstat (limited to 'src/audio/audio_backend.h')
| -rw-r--r-- | src/audio/audio_backend.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/audio/audio_backend.h b/src/audio/audio_backend.h index d9c4690..980ee6e 100644 --- a/src/audio/audio_backend.h +++ b/src/audio/audio_backend.h @@ -3,6 +3,7 @@ // Enables testing without hardware by abstracting audio output. #pragma once +#include <cstdint> // AudioBackend interface for audio output abstraction // Production uses MiniaudioBackend, tests use MockAudioBackend @@ -25,6 +26,11 @@ class AudioBackend { // Note: This should measure peak at actual playback time, not pre-buffer time virtual float get_realtime_peak() = 0; + // Get callback state for smooth time interpolation + // out_time: Timestamp of last audio callback (seconds) + // out_samples: Total samples read at last callback + virtual void get_callback_state(double* out_time, int64_t* out_samples) = 0; + #if !defined(STRIP_ALL) // Hook called when a voice is triggered (test-only) // timestamp: Time in seconds when voice was triggered |