playlist_state: add option "restore_paused"

When set, MPD will not auto-start playback on startup; it will be in
"paused" state.

src/conf.c

@@ -59,6 +59,7 @@ static struct config_entry config_entries[] = {
 	{ .name = CONF_LOG_FILE, false, false },
 	{ .name = CONF_PID_FILE, false, false },
 	{ .name = CONF_STATE_FILE, false, false },
+	{ .name = "restore_paused", false, false },
 	{ .name = CONF_USER, false, false },
 	{ .name = CONF_GROUP, false, false },
 	{ .name = CONF_BIND_TO_ADDRESS, true, false },

src/playlist_state.c

@@ -29,6 +29,7 @@
 #include "queue_save.h"
 #include "path.h"
 #include "text_file.h"
+#include "conf.h"
 
 #include <string.h>
 #include <stdlib.h>
@@ -196,6 +197,13 @@ playlist_state_restore(const char *line, FILE *fp, GString *buffer,
 		if (!queue_valid_position(&playlist->queue, current))
 			current = 0;
 
+		if (state == PLAYER_STATE_PLAY &&
+		    config_get_bool("restore_paused", false))
+			/* the user doesn't want MPD to auto-start
+			   playback after startup; fall back to
+			   "pause" */
+			state = PLAYER_STATE_PAUSE;
+
 		/* enable all devices for the first time; this must be
 		   called here, after the audio output states were
 		   restored, before playback begins */