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alsa: fill with silence when underrun

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Also try to resync when the follower buffer is running empty.
Fill the buffer with silence instead of doing _pcm_forward.
This commit is contained in:
Wim Taymans 2022-02-12 12:09:25 +01:00
parent 9855e2b303
commit 0bca352241
1 changed files with 3 additions and 3 deletions
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6
spa/plugins/alsa/alsa-pcm.c
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@ -1873,7 +1873,7 @@ int spa_alsa_write(struct state *state)
if (SPA_UNLIKELY((res = get_status(state, current_time, &delay, &target)) < 0))
return res;
if (SPA_UNLIKELY(!state->alsa_recovering && delay > 2 * target)) {
if (SPA_UNLIKELY(!state->alsa_recovering && (delay < target / 2 || delay > 2 * target))) {
spa_dll_init(&state->dll);
state->alsa_sync = true;
}
@ -1884,7 +1884,7 @@ int spa_alsa_write(struct state *state)
if (delay > target)
snd_pcm_rewind(state->hndl, delay - target);
else
snd_pcm_forward(state->hndl, target - delay);
spa_alsa_silence(state, target - delay);
delay = target;
state->alsa_sync = false;
}
@ -1987,7 +1987,7 @@ again:
state, offset, written, state->sample_count);
total_written += written;
if (state->use_mmap) {
if (state->use_mmap && written > 0) {
if (SPA_UNLIKELY((commitres = snd_pcm_mmap_commit(hndl, offset, written)) < 0)) {
spa_log_error(state->log, "%s: snd_pcm_mmap_commit error: %s",
state->props.device, snd_strerror(commitres));