From c744db3a86361a4f1d351fc28465ef53e07a83c9 Mon Sep 17 00:00:00 2001
From: Roman Fomin <rfomin@gmail.com>
Date: Sun, 7 Jan 2024 00:05:42 +0700
Subject: [PATCH] create mutex on music module init

Avoid crashing when changing volume between tracks.
---
 src/i_oalmusic.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/src/i_oalmusic.c b/src/i_oalmusic.c
index 4b3a9d0c..b8545253 100644
--- a/src/i_oalmusic.c
+++ b/src/i_oalmusic.c
@@ -249,6 +249,8 @@ static boolean I_OAL_InitMusic(int device)
         alSourcei(player.source, AL_SOURCE_SPATIALIZE_SOFT, AL_FALSE);
     }
 
+    music_lock = SDL_CreateMutex();
+
     music_initialized = true;
 
     return true;
@@ -298,8 +300,6 @@ static void I_OAL_PlaySong(void *handle, boolean looping)
         return;
     }
 
-    music_lock = SDL_CreateMutex();
-
     player_thread_running = true;
     player_thread_handle = SDL_CreateThread(PlayerThread, NULL, NULL);
     if (player_thread_handle == NULL)
@@ -325,7 +325,6 @@ static void I_OAL_StopSong(void *handle)
         player_thread_running = false;
         SDL_WaitThread(player_thread_handle, NULL);
     }
-    SDL_DestroyMutex(music_lock);
 
     alGetSourcei(player.source, AL_BUFFERS_PROCESSED, &processed);
     if (processed > 0)
@@ -376,6 +375,8 @@ static void I_OAL_ShutdownMusic(void)
 
     memset(&player, 0, sizeof(stream_player_t));
 
+    SDL_DestroyMutex(music_lock);
+
     music_initialized = false;
 }