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Add stream for control - 1

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This commit is contained in:
Frank Krick 2025-08-10 19:31:22 -04:00
parent 618d60a1f2
commit 9dc20765e1
1 changed files with 40 additions and 0 deletions
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40
src/modules/module-filter-chain.c
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@ -1176,6 +1176,10 @@ struct impl {
struct spa_hook playback_listener;
struct spa_audio_info_raw playback_info;
struct pw_properties *control_props;
struct pw_stream *control;
struct spa_hook control_listener;
struct spa_audio_info_raw info;
struct spa_io_position *position;
@ -1219,6 +1223,23 @@ static void capture_process(void *d)
}
}
static void control_process(void *d)
{
struct impl *impl = d;
int res;
if ((res = pw_stream_trigger_process(impl->playback)) < 0) {
pw_log_debug("playback trigger error: %s", spa_strerror(res));
while (true) {
struct pw_buffer *t;
if ((t = pw_stream_dequeue_buffer(impl->control)) == NULL)
break;
/* playback part is not ready, consume, discard and recycle
* the capture buffers */
pw_stream_queue_buffer(impl->control, t);
}
}
}
static void playback_process(void *d)
{
struct impl *impl = d;
@ -1578,6 +1599,15 @@ static const struct pw_stream_events out_stream_events = {
.param_changed = playback_param_changed,
};
static const struct pw_stream_events control_stream_events = {
PW_VERSION_STREAM_EVENTS,
.destroy = NULL,
.process = control_process,
.io_changed = NULL,
.state_changed = NULL,
.param_changed = NULL,
};
static int setup_streams(struct impl *impl)
{
int res;
@ -1587,6 +1617,16 @@ static int setup_streams(struct impl *impl)
struct spa_pod_dynamic_builder b;
struct spa_filter_graph *graph = impl->graph;
impl->control = pw_stream_new(impl->core,
"filter control", impl->capture_props);
impl->control_props = NULL;
if (impl->control == NULL)
return -errno;
pw_stream_add_listener(impl->control,
&impl->control_listener,
&control_stream_events, impl);
impl->capture = pw_stream_new(impl->core,
"filter capture", impl->capture_props);
impl->capture_props = NULL;