player_control: protect command, state, error with a mutex

Use GMutex/GCond instead of the notify library.  Manually lock the
player_control object before accessing the protected attributes.  Use
the GCond object to notify the player thread and the main thread.

1 files changed, 7 insertions, 2 deletions

diff --git a/src/output_all.c b/src/output_all.c
index 08f4ee0dc..bdf0385bb 100644
--- a/src/output_all.c
+++ b/src/output_all.c
@@ -445,10 +445,15 @@ audio_output_all_check(void)
 bool
 audio_output_all_wait(unsigned threshold)
 {
-	if (audio_output_all_check() < threshold)
+	player_lock();
+
+	if (audio_output_all_check() < threshold) {
+		player_unlock();
 		return true;
+	}
 
-	notify_wait(&pc.notify);
+	player_wait();
+	player_unlock();
 
 	return audio_output_all_check() < threshold;
 }