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fix(audio): prevent empty session replay

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chenjintao
2026-09-24 18:00:48 +08:00
parent 83ef72839e
commit 6fad31c37a
2 changed files with 33 additions and 18 deletions
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ql-application/threadx/interface/custom_app/vad_det.c
+15 -11
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@@ -420,17 +420,21 @@ void vad_audio_process(void) {
#endif
first_sound_detected = true;
{
size_t first = (vad_preroll_next + VAD_PREROLL_FRAMES - vad_preroll_count) % VAD_PREROLL_FRAMES;
size_t n;
for (n = 0; n < vad_preroll_count; n++) {
size_t frame_index = (first + n) % VAD_PREROLL_FRAMES;
if (hal_os_rb_write(ring_sender, vad_preroll[frame_index], VAD_FRAME_BYTES, 25) > 0) {
ql_rtos_semaphore_release(sender_sem);
}
}
vad_preroll_count = 0;
}
{
size_t first = (vad_preroll_next + VAD_PREROLL_FRAMES - vad_preroll_count) % VAD_PREROLL_FRAMES;
size_t n;
int preroll_queued = 0;
for (n = 0; n < vad_preroll_count; n++) {
size_t frame_index = (first + n) % VAD_PREROLL_FRAMES;
if (hal_os_rb_write(ring_sender, vad_preroll[frame_index], VAD_FRAME_BYTES, 25) > 0) {
preroll_queued = 1;
}
}
if (preroll_queued) {
ql_rtos_semaphore_release(sender_sem);
}
vad_preroll_count = 0;
}
set_state(STATE_RECORDING_ACTIVE);
printf("First speech confirmed by FVAD (continuous %d frames)", SPEECH_DETECT_THRESHOLD);
}