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alsa-pcm: start playback immediately if there is start delay set

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Without this change, playback_ready or capture_ready was called
immediately after spa_alsa_start even tho start-delay was set.
Ready function was called with not precise "nsec" value, as "nsec"
plus latency should return time when the next buffer should be played
which wasn't true as start-delay was not included.

Now the playback is started immediately when the start_delay is set.
The alsa_do_wakeup_work is still called immediately but two things can
happened. Either start-delay is smaller then max_error and *_ready
function is called immediately, or start-delay is bigger then max_error
and state->next_time will be updated to correct value.

Signed-off-by: Martin Geier <martin.geier@streamunlimited.com>
This commit is contained in:
Martin Geier 2024-03-28 16:22:19 +01:00 • committed by Wim Taymans
parent 1e6dad14d3
commit 4c11a2aa9a
1 changed files with 5 additions and 4 deletions
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9
spa/plugins/alsa/alsa-pcm.c
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@ -3603,16 +3603,17 @@ int spa_alsa_start(struct state *state)
return err;
}
state->started = true;
spa_loop_invoke(state->data_loop, do_state_sync, 0, NULL, 0, true, state);
/* playback will start after first write. Without tsched, we start
* right away so that the fds become active in poll right away. */
if (state->stream == SND_PCM_STREAM_PLAYBACK) {
if (state->disable_tsched)
if (state->disable_tsched || state->start_delay > 0)
if ((err = do_start(state)) < 0)
return err;
}
state->started = true;
spa_loop_invoke(state->data_loop, do_state_sync, 0, NULL, 0, true, state);
return 0;
}