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gst: handle flush event in pipewiresink

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flush the pw buffers to the stream's queue during a FLUSH_START event
and return the unqueued pw buffers, if they are dropped/released without
being rendered, so they can be available to be dequeued for the subsequent
`acquire` calls
This commit is contained in:
Taruntej Kanakamalla 2024-12-27 10:39:36 +05:30 • committed by Wim Taymans
parent b70e99c41a
commit c0a6a7ea32
2 changed files with 66 additions and 4 deletions
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36
src/gst/gstpipewiresink.c
View file

@ -120,6 +120,8 @@ static GstCaps *gst_pipewire_sink_sink_fixate (GstBaseSink * bsink,
static GstFlowReturn gst_pipewire_sink_render (GstBaseSink * psink,
GstBuffer * buffer);
static gboolean gst_pipewire_sink_event (GstBaseSink *sink, GstEvent *event);
static GstClock *
gst_pipewire_sink_provide_clock (GstElement * elem)
{
@ -272,6 +274,7 @@ gst_pipewire_sink_class_init (GstPipeWireSinkClass * klass)
gstbasesink_class->fixate = gst_pipewire_sink_sink_fixate;
gstbasesink_class->propose_allocation = gst_pipewire_sink_propose_allocation;
gstbasesink_class->render = gst_pipewire_sink_render;
gstbasesink_class->event = gst_pipewire_sink_event;
GST_DEBUG_CATEGORY_INIT (pipewire_sink_debug, "pipewiresink", 0,
"PipeWire Sink");
@ -627,7 +630,10 @@ do_send_buffer (GstPipeWireSink *pwsink, GstBuffer *buffer)
}
if ((res = pw_stream_queue_buffer (stream->pwstream, data->b)) < 0) {
g_warning ("can't send buffer %s", spa_strerror(res));
GST_WARNING_OBJECT (pwsink, "can't send buffer %s", spa_strerror(res));
} else {
data->queued = TRUE;
GST_LOG_OBJECT(pwsink, "queued pwbuffer: %p; gstbuffer %p ",data->b, buffer);
}
switch (pwsink->slave_method) {
@ -986,3 +992,31 @@ open_failed:
return GST_STATE_CHANGE_FAILURE;
}
}
static gboolean gst_pipewire_sink_event (GstBaseSink *sink, GstEvent *event) {
GstPipeWireSink *pw_sink = GST_PIPEWIRE_SINK(sink);
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_FLUSH_START:
{
GST_DEBUG_OBJECT (pw_sink, "flush-start");
pw_thread_loop_lock (pw_sink->stream->core->loop);
pw_stream_set_active(pw_sink->stream->pwstream, false);
pw_stream_flush(pw_sink->stream->pwstream, false);
pw_thread_loop_unlock (pw_sink->stream->core->loop);
break;
}
case GST_EVENT_FLUSH_STOP:
{
GST_DEBUG_OBJECT (pw_sink, "flush-stop");
pw_thread_loop_lock (pw_sink->stream->core->loop);
pw_stream_set_active(pw_sink->stream->pwstream, true);
pw_thread_loop_unlock (pw_sink->stream->core->loop);
break;
}
default:
break;
}
return GST_BASE_SINK_CLASS (parent_class)->event (sink, event);
}