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author | Kővágó, Zoltán <dirty.ice.hu@gmail.com> | 2015-06-03 23:03:55 +0200 |
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committer | Gerd Hoffmann <kraxel@redhat.com> | 2015-06-15 12:42:48 +0200 |
commit | 81ebb07c56a28aa7ca47c38eb44690025a9dd6b9 (patch) | |
tree | 04a151b6569660a16eefd6e709e88856bfd0cf4e /audio | |
parent | d1f52a1d704de2252bc48c64ca4d46086cb249a2 (diff) | |
download | qemu-81ebb07c56a28aa7ca47c38eb44690025a9dd6b9.zip qemu-81ebb07c56a28aa7ca47c38eb44690025a9dd6b9.tar.gz qemu-81ebb07c56a28aa7ca47c38eb44690025a9dd6b9.tar.bz2 |
sdlaudio: do not allow multiple instances
Since SDL uses a lot of global data, we can't create independent
instances of sdl audio backend.
Signed-off-by: Kővágó, Zoltán <DirtY.iCE.hu@gmail.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Diffstat (limited to 'audio')
-rw-r--r-- | audio/sdlaudio.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/audio/sdlaudio.c b/audio/sdlaudio.c index b95a7e0..1140f2e 100644 --- a/audio/sdlaudio.c +++ b/audio/sdlaudio.c @@ -55,6 +55,7 @@ static struct SDLAudioState { SDL_mutex *mutex; SDL_sem *sem; int initialized; + bool driver_created; } glob_sdl; typedef struct SDLAudioState SDLAudioState; @@ -393,6 +394,10 @@ static int sdl_ctl_out (HWVoiceOut *hw, int cmd, ...) static void *sdl_audio_init (void) { SDLAudioState *s = &glob_sdl; + if (s->driver_created) { + sdl_logerr("Can't create multiple sdl backends\n"); + return NULL; + } if (SDL_InitSubSystem (SDL_INIT_AUDIO)) { sdl_logerr ("SDL failed to initialize audio subsystem\n"); @@ -414,6 +419,7 @@ static void *sdl_audio_init (void) return NULL; } + s->driver_created = true; return s; } @@ -424,6 +430,7 @@ static void sdl_audio_fini (void *opaque) SDL_DestroySemaphore (s->sem); SDL_DestroyMutex (s->mutex); SDL_QuitSubSystem (SDL_INIT_AUDIO); + s->driver_created = false; } static struct audio_option sdl_options[] = { |