Commands: new command "toggleoutput"

src/AllCommands.cxx

@@ -159,6 +159,7 @@ static const struct command commands[] = {
 	{ "swap", PERMISSION_CONTROL, 2, 2, handle_swap },
 	{ "swapid", PERMISSION_CONTROL, 2, 2, handle_swapid },
 	{ "tagtypes", PERMISSION_READ, 0, 0, handle_tagtypes },
+	{ "toggleoutput", PERMISSION_ADMIN, 1, 1, handle_toggleoutput },
 	{ "unsubscribe", PERMISSION_READ, 1, 1, handle_unsubscribe },
 	{ "update", PERMISSION_CONTROL, 0, 1, handle_update },
 	{ "urlhandlers", PERMISSION_READ, 0, 0, handle_urlhandlers },

src/OutputCommand.cxx

@@ -84,3 +84,30 @@ audio_output_disable_index(unsigned idx)
 
 	return true;
 }
+
+bool
+audio_output_toggle_index(unsigned idx)
+{
+	struct audio_output *ao;
+
+	if (idx >= audio_output_count())
+		return false;
+
+	ao = audio_output_get(idx);
+	const bool enabled = ao->enabled = !ao->enabled;
+	idle_add(IDLE_OUTPUT);
+
+	if (!enabled) {
+		Mixer *mixer = ao->mixer;
+		if (mixer != nullptr) {
+			mixer_close(mixer);
+			idle_add(IDLE_MIXER);
+		}
+	}
+
+	ao->player_control->UpdateAudio();
+
+	++audio_output_state_version;
+
+	return true;
+}

src/OutputCommand.hxx

@@ -41,4 +41,11 @@ audio_output_enable_index(unsigned idx);
 bool
 audio_output_disable_index(unsigned idx);
 
+/**
+ * Toggles an audio output.  Returns false if the specified output
+ * does not exist.
+ */
+bool
+audio_output_toggle_index(unsigned idx);
+
 #endif

src/OutputCommands.cxx

@@ -64,6 +64,22 @@ handle_disableoutput(Client *client, G_GNUC_UNUSED int argc, char *argv[])
 	return COMMAND_RETURN_OK;
 }
 
+enum command_return
+handle_toggleoutput(Client *client, gcc_unused int argc, char *argv[])
+{
+	unsigned device;
+	if (!check_unsigned(client, &device, argv[1]))
+		return COMMAND_RETURN_ERROR;
+
+	if (!audio_output_toggle_index(device)) {
+		command_error(client, ACK_ERROR_NO_EXIST,
+			      "No such audio output");
+		return COMMAND_RETURN_ERROR;
+	}
+
+	return COMMAND_RETURN_OK;
+}
+
 enum command_return
 handle_devices(Client *client,
 	       G_GNUC_UNUSED int argc, G_GNUC_UNUSED char *argv[])

src/OutputCommands.hxx

@@ -30,6 +30,9 @@ handle_enableoutput(Client *client, int argc, char *argv[]);
 enum command_return
 handle_disableoutput(Client *client, int argc, char *argv[]);
 
+enum command_return
+handle_toggleoutput(Client *client, int argc, char *argv[]);
+
 enum command_return
 handle_devices(Client *client, int argc, char *argv[]);