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export both min and max latency that is configured for a sink; add API for querying the requested latency of a sink/source from the main thread

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git-svn-id: file:///home/lennart/svn/public/pulseaudio/branches/glitch-free@2225 fefdeb5f-60dc-0310-8127-8f9354f1896f
This commit is contained in:
Lennart Poettering 2008-04-09 01:16:43 +00:00
parent ad18107223
commit da37a7e93d
6 changed files with 104 additions and 15 deletions
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39
src/pulsecore/source.c
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@ -166,6 +166,7 @@ pa_source* pa_source_new(
s->refresh_volume = s->refresh_muted = FALSE;
s->min_latency = DEFAULT_MIN_LATENCY;
s->max_latency = s->min_latency;
s->get_latency = NULL;
s->set_volume = NULL;
@ -243,6 +244,8 @@ void pa_source_put(pa_source *s) {
pa_assert(s->rtpoll);
pa_assert(s->asyncmsgq);
pa_assert(!s->min_latency || !s->max_latency || s->min_latency <= s->max_latency);
if (s->get_volume && s->set_volume)
s->flags |= PA_SOURCE_HW_VOLUME_CTRL;
else {
@ -616,13 +619,20 @@ int pa_source_process_msg(pa_msgobject *object, int code, void *userdata, int64_
* asyncmsgq and rtpoll fields can be changed without
* problems */
pa_source_detach_within_thread(s);
break;
return 0;
case PA_SOURCE_MESSAGE_ATTACH:
/* Reattach all streams */
pa_source_attach_within_thread(s);
break;
return 0;
case PA_SOURCE_MESSAGE_GET_REQUESTED_LATENCY: {
pa_usec_t *usec = userdata;
*usec = pa_source_get_requested_latency_within_thread(s);
return 0;
}
case PA_SOURCE_MESSAGE_GET_LATENCY:
case PA_SOURCE_MESSAGE_MAX:
@ -683,7 +693,7 @@ void pa_source_attach_within_thread(pa_source *s) {
o->attach(o);
}
pa_usec_t pa_source_get_requested_latency(pa_source *s) {
pa_usec_t pa_source_get_requested_latency_within_thread(pa_source *s) {
pa_usec_t result = 0;
pa_source_output *o;
void *state = NULL;
@ -699,12 +709,35 @@ pa_usec_t pa_source_get_requested_latency(pa_source *s) {
(!result || result > o->thread_info.requested_source_latency))
result = o->thread_info.requested_source_latency;
if (result > 0) {
if (s->max_latency > 0 && result > s->max_latency)
result = s->max_latency;
if (s->min_latency > 0 && result < s->min_latency)
result = s->min_latency;
}
s->thread_info.requested_latency = result;
s->thread_info.requested_latency_valid = TRUE;
return result;
}
pa_usec_t pa_source_get_requested_latency(pa_source *s) {
pa_usec_t usec;
pa_source_assert_ref(s);
pa_assert(PA_SOURCE_LINKED(s->state));
if (!PA_SOURCE_OPENED(s->state))
return 0;
if (pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_REQUESTED_LATENCY, &usec, 0, NULL) < 0)
return 0;
return usec;
}
void pa_source_invalidate_requested_latency(pa_source *s) {
pa_source_assert_ref(s);