output/Jack: mark ports as terminal

This is the correct thing to do for ports from which a signal ultimately "originates", such as is the case with mpd.

output/Jack: mark ports as terminal
65778a37 · Niklas Haas · Max Kellermann · d9841668 · 65778a37 · 65778a37
Commit 65778a37 authored Jan 10, 2019 by Niklas Haas Committed by Max Kellermann Oct 29, 2019
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NEWS NEWS +2 -0

JackOutputPlugin.cxx src/output/plugins/JackOutputPlugin.cxx +2 -1

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--- a/NEWS
+++ b/NEWS
 ver 0.21.17 (not yet released)
+* outputs
+  - jack: mark ports as terminal

 ver 0.21.16 (2019/10/16)
 * queue

--- a/src/output/plugins/JackOutputPlugin.cxx
+++ b/src/output/plugins/JackOutputPlugin.cxx
@@ -403,10 +403,11 @@ JackOutput::Connect()
 	jack_on_shutdown(client, mpd_jack_shutdown, this);

 	for (unsigned i = 0; i < num_source_ports; ++i) {
+		unsigned long portflags = JackPortIsOutput | JackPortIsTerminal;
 		ports[i] = jack_port_register(client,
 					      source_ports[i].c_str(),
 					      JACK_DEFAULT_AUDIO_TYPE,
-					      JackPortIsOutput, 0);
+					      portflags, 0);
 		if (ports[i] == nullptr) {
 			Disconnect();
 			throw FormatRuntimeError("Cannot register output port \"%s\"",