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example: use thread loop in example

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This commit is contained in:
Wim Taymans 2020-06-08 17:13:38 +02:00
parent 180f2b0f20
commit f278ded975
1 changed files with 27 additions and 13 deletions
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40
src/examples/video-src-alloc.c
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@ -47,7 +47,7 @@
#define M_PI_M2 ( M_PI + M_PI ) #define M_PI_M2 ( M_PI + M_PI )
struct data { struct data {
struct pw_main_loop *loop; struct pw_thread_loop *loop;
struct spa_source *timer; struct spa_source *timer;
struct pw_stream *stream; struct pw_stream *stream;
@ -191,7 +191,7 @@ static void on_stream_state_changed(void *_data, enum pw_stream_state old, enum
switch (state) { switch (state) {
case PW_STREAM_STATE_PAUSED: case PW_STREAM_STATE_PAUSED:
printf("node id: %d\n", pw_stream_get_node_id(data->stream)); printf("node id: %d\n", pw_stream_get_node_id(data->stream));
pw_loop_update_timer(pw_main_loop_get_loop(data->loop), pw_loop_update_timer(pw_thread_loop_get_loop(data->loop),
data->timer, NULL, NULL, false); data->timer, NULL, NULL, false);
break; break;
case PW_STREAM_STATE_STREAMING: case PW_STREAM_STATE_STREAMING:
@ -203,7 +203,7 @@ static void on_stream_state_changed(void *_data, enum pw_stream_state old, enum
interval.tv_sec = 0; interval.tv_sec = 0;
interval.tv_nsec = 40 * SPA_NSEC_PER_MSEC; interval.tv_nsec = 40 * SPA_NSEC_PER_MSEC;
pw_loop_update_timer(pw_main_loop_get_loop(data->loop), pw_loop_update_timer(pw_thread_loop_get_loop(data->loop),
data->timer, &timeout, &interval, false); data->timer, &timeout, &interval, false);
break; break;
} }
@ -351,7 +351,7 @@ static const struct pw_stream_events stream_events = {
static void do_quit(void *userdata, int signal_number) static void do_quit(void *userdata, int signal_number)
{ {
struct data *data = userdata; struct data *data = userdata;
pw_main_loop_quit(data->loop); pw_thread_loop_signal(data->loop, false);
} }
int main(int argc, char *argv[]) int main(int argc, char *argv[])
@ -363,12 +363,20 @@ int main(int argc, char *argv[])
pw_init(&argc, &argv); pw_init(&argc, &argv);
/* create a main loop */ /* create a thread loop and start it */
data.loop = pw_main_loop_new(NULL); data.loop = pw_thread_loop_new("video-src-alloc", NULL);
/* take the lock around all PipeWire functions. In callbacks, the lock
* is already taken for you but it's ok to lock again because the lock is
* recursive */
pw_thread_loop_lock(data.loop);
/* install some handlers to exit nicely */ /* install some handlers to exit nicely */
pw_loop_add_signal(pw_main_loop_get_loop(data.loop), SIGINT, do_quit, &data); pw_loop_add_signal(pw_thread_loop_get_loop(data.loop), SIGINT, do_quit, &data);
pw_loop_add_signal(pw_main_loop_get_loop(data.loop), SIGTERM, do_quit, &data); pw_loop_add_signal(pw_thread_loop_get_loop(data.loop), SIGTERM, do_quit, &data);
/* start after the signal handlers are set */
pw_thread_loop_start(data.loop);
/* create a simple stream, the simple stream manages the core /* create a simple stream, the simple stream manages the core
* object for you if you don't want to deal with them. * object for you if you don't want to deal with them.
@ -382,7 +390,7 @@ int main(int argc, char *argv[])
* the data. * the data.
*/ */
data.stream = pw_stream_new_simple( data.stream = pw_stream_new_simple(
pw_main_loop_get_loop(data.loop), pw_thread_loop_get_loop(data.loop),
"video-src-alloc", "video-src-alloc",
pw_properties_new( pw_properties_new(
PW_KEY_MEDIA_CLASS, "Video/Source", PW_KEY_MEDIA_CLASS, "Video/Source",
@ -391,7 +399,7 @@ int main(int argc, char *argv[])
&data); &data);
/* make a timer to schedule our frames */ /* make a timer to schedule our frames */
data.timer = pw_loop_add_timer(pw_main_loop_get_loop(data.loop), on_timeout, &data); data.timer = pw_loop_add_timer(pw_thread_loop_get_loop(data.loop), on_timeout, &data);
/* build the extra parameter for the connection. Here we make an /* build the extra parameter for the connection. Here we make an
* EnumFormat parameter which lists the possible formats we can provide. * EnumFormat parameter which lists the possible formats we can provide.
@ -423,11 +431,17 @@ int main(int argc, char *argv[])
PW_STREAM_FLAG_ALLOC_BUFFERS, PW_STREAM_FLAG_ALLOC_BUFFERS,
params, 1); params, 1);
/* run the loop, this will trigger the callbacks */ /* unlock, run the loop and wait, this will trigger the callbacks */
pw_main_loop_run(data.loop); pw_thread_loop_wait(data.loop);
/* unlock before stop */
pw_thread_loop_unlock(data.loop);
pw_thread_loop_stop(data.loop);
pw_stream_destroy(data.stream); pw_stream_destroy(data.stream);
pw_main_loop_destroy(data.loop);
/* destroy after dependent objects are destroyed */
pw_thread_loop_destroy(data.loop);
pw_deinit(); pw_deinit();
return 0; return 0;