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core: add a seperate fixed_latency field for sinks/sources with fixed latency

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This commit is contained in:
Lennart Poettering 2009-04-10 01:26:04 +02:00
parent 9ae8ca2c37
commit f7c229d8f9
7 changed files with 67 additions and 28 deletions
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28
src/pulsecore/source.c
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@ -43,6 +43,7 @@
#define ABSOLUTE_MIN_LATENCY (500)
#define ABSOLUTE_MAX_LATENCY (10*PA_USEC_PER_SEC)
#define DEFAULT_FIXED_LATENCY (250*PA_USEC_PER_MSEC)
static PA_DEFINE_CHECK_TYPE(pa_source, pa_msgobject);
@ -199,6 +200,8 @@ pa_source* pa_source_new(
s->muted = data->muted;
s->refresh_volume = s->refresh_muted = FALSE;
s->fixed_latency = flags & PA_SOURCE_DYNAMIC_LATENCY ? 0 : DEFAULT_FIXED_LATENCY;
reset_callbacks(s);
s->userdata = NULL;
@ -303,8 +306,7 @@ void pa_source_put(pa_source *s) {
/* The following fields must be initialized properly when calling _put() */
pa_assert(s->asyncmsgq);
pa_assert(s->rtpoll);
pa_assert(!s->thread_info.min_latency || !s->thread_info.max_latency ||
s->thread_info.min_latency <= s->thread_info.max_latency);
pa_assert(s->thread_info.min_latency <= s->thread_info.max_latency);
if (!(s->flags & PA_SOURCE_HW_VOLUME_CTRL)) {
s->flags |= PA_SOURCE_DECIBEL_VOLUME;
@ -316,6 +318,11 @@ void pa_source_put(pa_source *s) {
if (s->flags & PA_SOURCE_DECIBEL_VOLUME)
s->n_volume_steps = PA_VOLUME_NORM+1;
if (s->flags & PA_SOURCE_DYNAMIC_LATENCY)
s->fixed_latency = 0;
else if (s->fixed_latency <= 0)
s->fixed_latency = DEFAULT_FIXED_LATENCY;
pa_assert_se(source_set_state(s, PA_SOURCE_IDLE) == 0);
pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE | PA_SUBSCRIPTION_EVENT_NEW, s->index);
@ -1096,6 +1103,9 @@ pa_usec_t pa_source_get_requested_latency_within_thread(pa_source *s) {
pa_source_assert_ref(s);
if (!(s->flags & PA_SOURCE_DYNAMIC_LATENCY))
return PA_CLAMP(s->fixed_latency, s->thread_info.min_latency, s->thread_info.max_latency);
if (s->thread_info.requested_latency_valid)
return s->thread_info.requested_latency;
@ -1105,13 +1115,8 @@ pa_usec_t pa_source_get_requested_latency_within_thread(pa_source *s) {
(result == (pa_usec_t) -1 || result > o->thread_info.requested_source_latency))
result = o->thread_info.requested_source_latency;
if (result != (pa_usec_t) -1) {
if (s->thread_info.max_latency > 0 && result > s->thread_info.max_latency)
result = s->thread_info.max_latency;
if (s->thread_info.min_latency > 0 && result < s->thread_info.min_latency)
result = s->thread_info.min_latency;
}
if (result != (pa_usec_t) -1)
result = PA_CLAMP(result, s->thread_info.min_latency, s->thread_info.max_latency);
s->thread_info.requested_latency = result;
s->thread_info.requested_latency_valid = TRUE;
@ -1121,7 +1126,7 @@ pa_usec_t pa_source_get_requested_latency_within_thread(pa_source *s) {
/* Called from main thread */
pa_usec_t pa_source_get_requested_latency(pa_source *s) {
pa_usec_t usec;
pa_usec_t usec = 0;
pa_source_assert_ref(s);
pa_assert(PA_SOURCE_IS_LINKED(s->state));
@ -1169,6 +1174,9 @@ void pa_source_invalidate_requested_latency(pa_source *s) {
pa_source_assert_ref(s);
if (!(s->flags & PA_SOURCE_DYNAMIC_LATENCY))
return;
s->thread_info.requested_latency_valid = FALSE;
if (PA_SOURCE_IS_LINKED(s->thread_info.state)) {