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alsa: reflow some code

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Move common code outside the if branches.
Only do the batch and timer stuff when using timers.
This commit is contained in:
Wim Taymans 2023-08-23 13:56:20 +02:00
parent dbd97020da
commit d08d05629b
1 changed files with 17 additions and 21 deletions
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38
spa/plugins/alsa/alsa-pcm.c
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@ -1645,31 +1645,27 @@ int spa_alsa_set_format(struct state *state, struct spa_audio_info *fmt, uint32_
dir = 0;
period_size = state->default_period_size;
is_batch = snd_pcm_hw_params_is_batch(params) &&
!state->disable_batch;
is_batch = snd_pcm_hw_params_is_batch(params) && !state->disable_batch;
/* no period size specified. If we are batch or not using timers,
* use the graph duration as the period */
if (period_size == 0 && (is_batch || state->disable_tsched))
period_size = state->position ? state->position->clock.duration : DEFAULT_PERIOD;
period_size = state->position ? state->position->clock.target_duration : DEFAULT_PERIOD;
if (period_size == 0)
period_size = DEFAULT_PERIOD;
if (is_batch) {
if (period_size == 0)
period_size = DEFAULT_PERIOD;
/* batch devices get their hw pointers updated every period. Make
* the period smaller and add one period of headroom. Limit the
* period size to our default so that we don't create too much
* headroom. */
if (!state->disable_tsched)
if (!state->disable_tsched) {
if (is_batch) {
/* batch devices get their hw pointers updated every period. Make
* the period smaller and add one period of headroom. Limit the
* period size to our default so that we don't create too much
* headroom. */
period_size = SPA_MIN(period_size, DEFAULT_PERIOD) / 2;
spa_log_info(state->log, "%s: batch mode, period_size:%ld",
state->props.device, period_size);
} else {
if (period_size == 0)
period_size = DEFAULT_PERIOD;
/* disable ALSA wakeups, if we use a timer */
if (!state->disable_tsched && snd_pcm_hw_params_can_disable_period_wakeup(params))
CHECK(snd_pcm_hw_params_set_period_wakeup(hndl, params, 0), "set_period_wakeup");
} else {
/* disable ALSA wakeups */
if (snd_pcm_hw_params_can_disable_period_wakeup(params))
CHECK(snd_pcm_hw_params_set_period_wakeup(hndl, params, 0), "set_period_wakeup");
}
}
CHECK(snd_pcm_hw_params_set_period_size_near(hndl, params, &period_size, &dir), "set_period_size_near");
@ -1729,7 +1725,7 @@ int spa_alsa_set_format(struct state *state, struct spa_audio_info *fmt, uint32_
spa_log_info(state->log, "%s (%s): format:%s access:%s-%s rate:%d channels:%d "
"buffer frames %lu, period frames %lu, periods %u, frame_size %zd "
"headroom %u start-delay:%u tsched:%u",
"headroom %u start-delay:%u batch:%u tsched:%u",
state->props.device,
state->stream == SND_PCM_STREAM_CAPTURE ? "capture" : "playback",
snd_pcm_format_name(state->format),
@ -1737,7 +1733,7 @@ int spa_alsa_set_format(struct state *state, struct spa_audio_info *fmt, uint32_
planar ? "planar" : "interleaved",
state->rate, state->channels, state->buffer_frames, state->period_frames,
periods, state->frame_size, state->headroom, state->start_delay,
!state->disable_tsched);
is_batch, !state->disable_tsched);
/* write the parameters to device */
CHECK(snd_pcm_hw_params(hndl, params), "set_hw_params");