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core: make fixed latency dynamically changeable

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This of course makes the name 'fixed' a bit of a misnomer. However the
definitions are now like this:

fixed latency: the latency may change during runtime, but is solely
controlled by the backend, the client has no influence.

dynamic latency: the latency may change during runtime, influenced by
the requests of the clients.

i.e. fixed vs. dynamic is from the perspective of the client.
This commit is contained in:
Lennart Poettering 2009-08-15 00:48:14 +02:00
parent 4eb59fb90e
commit 350a2bc846
10 changed files with 212 additions and 52 deletions
Download patch file Download diff file Expand all files Collapse all files

7
src/pulsecore/source-output.c
View file

@ -84,6 +84,7 @@ static void reset_callbacks(pa_source_output *o) {
o->update_max_rewind = NULL;
o->update_source_requested_latency = NULL;
o->update_source_latency_range = NULL;
o->update_source_fixed_latency = NULL;
o->attach = NULL;
o->detach = NULL;
o->suspend = NULL;
@ -561,13 +562,13 @@ pa_usec_t pa_source_output_set_requested_latency_within_thread(pa_source_output
pa_source_output_assert_io_context(o);
if (!(o->source->flags & PA_SOURCE_DYNAMIC_LATENCY))
usec = o->source->fixed_latency;
usec = o->source->thread_info.fixed_latency;
if (usec != (pa_usec_t) -1)
usec = PA_CLAMP(usec, o->source->thread_info.min_latency, o->source->thread_info.max_latency);
o->thread_info.requested_source_latency = usec;
pa_source_invalidate_requested_latency(o->source);
pa_source_invalidate_requested_latency(o->source, TRUE);
return usec;
}
@ -587,7 +588,7 @@ pa_usec_t pa_source_output_set_requested_latency(pa_source_output *o, pa_usec_t
if (o->source) {
if (!(o->source->flags & PA_SOURCE_DYNAMIC_LATENCY))
usec = o->source->fixed_latency;
usec = pa_source_get_fixed_latency(o->source);
if (usec != (pa_usec_t) -1) {
pa_usec_t min_latency, max_latency;