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Make AUD_init failure fatal

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Failure to initialize the audio subsystem is not handled consistently.
Where it is handled it has guest visible effects, which is wrong.
We already have a "nosound" audio driver as a last resort, so trying to
proceed without an audio backend seems pointless.

Also protect against multiple calls to AUD_init so that this can be
pushed down into individual devices.

Signed-off-by: Paul Brook <paul@codesourcery.com>
This commit is contained in:
Paul Brook 2009-05-12 12:02:38 +01:00
parent f0f26a06d5
commit 0d9acba8fd
6 changed files with 35 additions and 50 deletions
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44
audio/audio.c
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@ -1711,6 +1711,10 @@ AudioState *AUD_init (void)
const char *drvname;
AudioState *s = &glob_audio_state;
if (s->drv) {
return s;
}
LIST_INIT (&s->hw_head_out);
LIST_INIT (&s->hw_head_in);
LIST_INIT (&s->cap_head);
@ -1718,8 +1722,7 @@ AudioState *AUD_init (void)
s->ts = qemu_new_timer (vm_clock, audio_timer, s);
if (!s->ts) {
dolog ("Could not create audio timer\n");
return NULL;
hw_error("Could not create audio timer\n");
}
audio_process_options ("AUDIO", audio_options);
@ -1772,37 +1775,30 @@ AudioState *AUD_init (void)
if (!done) {
done = !audio_driver_init (s, &no_audio_driver);
if (!done) {
dolog ("Could not initialize audio subsystem\n");
hw_error("Could not initialize audio subsystem\n");
}
else {
dolog ("warning: Using timer based audio emulation\n");
}
}
if (done) {
VMChangeStateEntry *e;
VMChangeStateEntry *e;
if (conf.period.hertz <= 0) {
if (conf.period.hertz < 0) {
dolog ("warning: Timer period is negative - %d "
"treating as zero\n",
conf.period.hertz);
}
conf.period.ticks = 1;
}
else {
conf.period.ticks = ticks_per_sec / conf.period.hertz;
}
e = qemu_add_vm_change_state_handler (audio_vm_change_state_handler, s);
if (!e) {
dolog ("warning: Could not register change state handler\n"
"(Audio can continue looping even after stopping the VM)\n");
if (conf.period.hertz <= 0) {
if (conf.period.hertz < 0) {
dolog ("warning: Timer period is negative - %d "
"treating as zero\n",
conf.period.hertz);
}
conf.period.ticks = 1;
} else {
conf.period.ticks = ticks_per_sec / conf.period.hertz;
}
else {
qemu_del_timer (s->ts);
return NULL;
e = qemu_add_vm_change_state_handler (audio_vm_change_state_handler, s);
if (!e) {
dolog ("warning: Could not register change state handler\n"
"(Audio can continue looping even after stopping the VM)\n");
}
LIST_INIT (&s->card_head);