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media-session: improve cleanup

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This commit is contained in:
Wim Taymans 2019-12-18 12:15:03 +01:00
parent 2a4c57798d
commit 147f488514
11 changed files with 301 additions and 162 deletions
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42
src/examples/media-session/alsa-midi.c
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@ -39,26 +39,44 @@
struct impl {
struct sm_media_session *session;
struct spa_hook listener;
struct pw_properties *props;
struct pw_proxy *proxy;
};
void * sm_alsa_midi_start(struct sm_media_session *session)
static void session_destroy(void *data)
{
struct impl *impl = data;
spa_hook_remove(&impl->listener);
pw_proxy_destroy(impl->proxy);
pw_properties_free(impl->props);
free(impl);
}
static const struct sm_media_session_events session_events = {
SM_VERSION_MEDIA_SESSION_EVENTS,
.destroy = session_destroy,
};
int sm_alsa_midi_start(struct sm_media_session *session)
{
struct impl *impl;
int res;
impl = calloc(1, sizeof(struct impl));
if (impl == NULL)
return NULL;
return -errno;
impl->session = session;
impl->props = pw_properties_new(
SPA_KEY_FACTORY_NAME, SPA_NAME_API_ALSA_SEQ_BRIDGE,
SPA_KEY_NODE_NAME, "Midi-Bridge",
NULL);
if (impl->props == NULL)
if (impl->props == NULL) {
res = -errno;
goto cleanup;
}
impl->proxy = sm_media_session_create_object(session,
"spa-node-factory",
@ -67,23 +85,17 @@ void * sm_alsa_midi_start(struct sm_media_session *session)
&impl->props->dict,
0);
if (impl->proxy == NULL)
if (impl->proxy == NULL) {
res = -errno;
goto cleanup_props;
}
sm_media_session_add_listener(session, &impl->listener, &session_events, impl);
return impl;
return 0;
cleanup_props:
pw_properties_free(impl->props);
cleanup:
free(impl);
return NULL;
}
int sm_alsa_midi_stop(void *data)
{
struct impl *impl = data;
pw_proxy_destroy(impl->proxy);
pw_properties_free(impl->props);
free(impl);
return 0;
return res;
}