Dear Georg,
Yes, I missed the cancel case.
mainloop type is threaded mainloop.
I change my code to something like this:
pa_threaded_mainloop_lock(m_mainloop);
pa_operation* o = pa_stream_update_timing_info(s, NULL, NULL);
LOGD("enter PA_WAIT_OPEARION2DONE loop");
if (o != NULL) {
while (1)
{
pa_operation_state_t state = pa_operation_get_state(o);
LOGD("state=%d", state);
if (state != PA_OPERATION_RUNNING)
{
LOGD("pa_operation_get_state(o) = %d", state);
break;
}
}
pa_operation_unref(o);
o = NULL;
} else {
LOGD("PA_WAIT_OPEARION2DONE operation is NULL");
}
NCLOGD("exit PA_WAIT_OPEARION2DONE loop");
pa_threaded_mainloop_unlock(m_mainloop);
It never ends, always printing state=0.
BR,
Lixin
在 2015年05月20日 13:49, Georg Chini 写道:
Dear Lixin,
On 20.05.2015 04:10, golden wrote:
Dear PulseAudio forks,
I`m making a function to get the buffer latency of
pa_stream(with PA_STREAM_AUTO_TIMING_UPDATE flag), here is what it
looks like
What type of mainloop are you using?
void operation_done_callback(pa_stream* , bool, void*)
{
LOGD("operation_done");
}
int64_t audiostream::getBufferLatencySize()
{
// m_stream is a pointer of pa_stream
pa_operation* o = pa_stream_update_timing_info(m_stream,
operation_done_callback, this);
LOGD("enter PA_WAIT_OPEARION2DONE loop");
if (o != NULL) {
while (sync && pa_operation_get_state(o) !=
PA_OPERATION_DONE)
;
Where does sync come from?
Maybe you try
while (sync && pa_operation_get_state(o) == PA_OPERATION_RUNNING)
instead, then at least the function should always return. The way you
implemented it, the function will never return if
pa_operation_get_state()
returns PA_OPERATION_CANCELLED.
pa_operation_unref(o);
o = NULL;
} else {
LOGD("PA_WAIT_OPEARION2DONE operation is NULL");
}
LOGD("exit PA_WAIT_OPEARION2DONE loop");
const pa_timing_info* t = pa_stream_get_timing_info(s);
if (!t) {
return -1;
}
return t->write_index - t->read_index;
}
I want that the user can get the accurate result when he calls
this function,
so every time if user called getBufferLatencySize, I call
pa_stream_update_timing_info and wait this operation done, and this
function is called in user thread.
Sometimes this operation is never finished, and the operation
done callback is never called.
Don't know what I'm doing wrong, any advice will be appreciated,
Thanks!
BR,
Lixin
_______________________________________________
pulseaudio-discuss mailing list
[email protected]
http://lists.freedesktop.org/mailman/listinfo/pulseaudio-discuss
_______________________________________________
pulseaudio-discuss mailing list
[email protected]
http://lists.freedesktop.org/mailman/listinfo/pulseaudio-discuss
_______________________________________________
pulseaudio-discuss mailing list
[email protected]
http://lists.freedesktop.org/mailman/listinfo/pulseaudio-discuss
