static int source_process_msg(pa_msgobject *o, int code, void *data, int64_t offset, pa_memchunk *chunk) {
struct userdata *u = PA_SOURCE(o)->userdata;
switch (code) {
case PA_SOURCE_MESSAGE_GET_LATENCY: {
pa_usec_t r = 0;
if (u->fd >= 0) {
if (u->use_mmap)
r = mmap_source_get_latency(u);
else
r = io_source_get_latency(u);
}
*((int64_t*) data) = (int64_t)r;
return 0;
}
}
return pa_source_process_msg(o, code, data, offset, chunk);
}
static int source_process_msg(pa_msgobject *o, int code, void *data, int64_t offset, pa_memchunk *chunk) {
struct userdata *u = PA_SOURCE(o)->userdata;
int ret;
int do_trigger = FALSE, quick = TRUE;
switch (code) {
case PA_SOURCE_MESSAGE_GET_LATENCY: {
pa_usec_t r = 0;
if (u->fd >= 0) {
if (u->use_mmap)
r = mmap_source_get_latency(u);
else
r = io_source_get_latency(u);
}
*((pa_usec_t*) data) = r;
return 0;
}
case PA_SOURCE_MESSAGE_SET_STATE:
switch ((pa_source_state_t) PA_PTR_TO_UINT(data)) {
case PA_SOURCE_SUSPENDED:
pa_assert(PA_SOURCE_IS_OPENED(u->source->thread_info.state));
if (!u->sink || u->sink_suspended) {
if (suspend(u) < 0)
return -1;
}
do_trigger = TRUE;
u->source_suspended = TRUE;
break;
case PA_SOURCE_IDLE:
case PA_SOURCE_RUNNING:
if (u->source->thread_info.state == PA_SOURCE_INIT) {
do_trigger = TRUE;
quick = u->sink && PA_SINK_IS_OPENED(u->sink->thread_info.state);
}
if (u->source->thread_info.state == PA_SOURCE_SUSPENDED) {
if (!u->sink || u->sink_suspended) {
if (unsuspend(u) < 0)
return -1;
quick = FALSE;
}
do_trigger = TRUE;
u->in_mmap_current = 0;
u->in_mmap_saved_nfrags = 0;
u->source_suspended = FALSE;
}
break;
case PA_SOURCE_UNLINKED:
case PA_SOURCE_INIT:
case PA_SOURCE_INVALID_STATE:
;
}
break;
}
ret = pa_source_process_msg(o, code, data, offset, chunk);
if (ret >= 0 && do_trigger) {
if (trigger(u, quick) < 0)
return -1;
}
return ret;
}
