Audio seek subscription

[vidicunt]

Hello!

Subscribing to AVTransport does not notify when the user seeks the audio. How can I be notified of this?

[mill1000]

Looks like the seek command is not switching the transport state to "TRANSITIONING" as required by the AVTransport spec.

gmrender-resurrect/src/upnp_transport.c

Lines 881 to 887 in 4ac7d89

	if (output_seek(nanos) == 0) {
	// TODO(hzeller): Seeking might take some time,
	// pretend to already be there. Should we go into
	// TRANSITION mode ?
	// (gstreamer will go into PAUSE, then PLAYING)
	replace_var(TRANSPORT_VAR_REL_TIME_POS, target);
	}

This is similar to the seeking issues reported in #217, which are partially caused by the incorrect return type below which is fixed in PR #241

gmrender-resurrect/src/output_gstreamer.c

Lines 198 to 202 in 4ac7d89

	if (gst_element_seek(player_, 1.0, GST_FORMAT_TIME,
	GST_SEEK_FLAG_FLUSH,
	GST_SEEK_TYPE_SET, position_nanos,
	GST_SEEK_TYPE_NONE, GST_CLOCK_TIME_NONE)) {
	return -1;

[vidicunt]

Thank you! I'll be waiting for the merge then

[mill1000]

Might be worth keeping open since I don't think #241 will fully solve the seek eventing