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audio: check for pulseaudio daemon pidfile

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Check whenever the pulseaudio daemon pidfile is present before trying to
initialize the pulseaudio backend.  Just return NULL if that is not the
case, so qemu will check the next backend in line.

In case the user explicitly configured a non-default pulseaudio server
skip the check.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-id: 20190124112055.547-5-kraxel@redhat.com
This commit is contained in:
Gerd Hoffmann 2019-01-24 12:20:53 +01:00
parent f92c7168cd
commit d175505bd6
1 changed files with 15 additions and 0 deletions
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15
audio/paaudio.c
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@ -814,6 +814,21 @@ static PAConf glob_conf = {
static void *qpa_audio_init (void)
{
if (glob_conf.server == NULL) {
char pidfile[64];
char *runtime;
struct stat st;
runtime = getenv("XDG_RUNTIME_DIR");
if (!runtime) {
return NULL;
}
snprintf(pidfile, sizeof(pidfile), "%s/pulse/pid", runtime);
if (stat(pidfile, &st) != 0) {
return NULL;
}
}
paaudio *g = g_malloc(sizeof(paaudio));
g->conf = glob_conf;
g->mainloop = NULL;