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alsa: IRQ based scheduling wakes up after finishing 1 period

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So we need to keep 2 periods of silence to keep 1 period of data inside
the ringbuffer when starting the graph.
This commit is contained in:
Wim Taymans 2023-09-15 15:33:00 +02:00
parent eac74f6ece
commit c6f9cfa220
1 changed files with 6 additions and 2 deletions
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8
spa/plugins/alsa/alsa-pcm.c
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@ -2903,8 +2903,12 @@ int spa_alsa_prepare(struct state *state)
state->name, snd_strerror(err)); state->name, snd_strerror(err));
return err; return err;
} }
if (state->stream == SND_PCM_STREAM_PLAYBACK) if (state->stream == SND_PCM_STREAM_PLAYBACK) {
spa_alsa_silence(state, state->start_delay + state->threshold + state->headroom); snd_pcm_uframes_t silence = state->start_delay + state->threshold + state->headroom;
if (state->disable_tsched)
silence += state->threshold;
spa_alsa_silence(state, silence);
}
reset_buffers(state); reset_buffers(state);
state->alsa_sync = true; state->alsa_sync = true;