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audio: Only use audio timer when necessary 

Originally proposed by Gerd Hoffmann.

Signed-off-by: malc <av1474@comtv.ru>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
malc 2010-11-18 14:30:12 +03:00
parent 8ca209ad90
commit 39deb1e496
1 changed files with 10 additions and 14 deletions
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24
audio/audio.c
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@ -1096,15 +1096,6 @@ static void audio_pcm_print_info (const char *cap, struct audio_pcm_info *info)
/*
* Timer
*/
static void audio_timer (void *opaque)
{
AudioState *s = opaque;
audio_run ("timer");
qemu_mod_timer (s->ts, qemu_get_clock (vm_clock) + conf.period.ticks);
}
static int audio_is_timer_needed (void)
{
HWVoiceIn *hwi = NULL;
@ -1119,10 +1110,8 @@ static int audio_is_timer_needed (void)
return 0;
}
static void audio_reset_timer (void)
static void audio_reset_timer (AudioState *s)
{
AudioState *s = &glob_audio_state;
if (audio_is_timer_needed ()) {
qemu_mod_timer (s->ts, qemu_get_clock (vm_clock) + 1);
}
@ -1131,6 +1120,12 @@ static void audio_reset_timer (void)
}
}
static void audio_timer (void *opaque)
{
audio_run ("timer");
audio_reset_timer (opaque);
}
/*
* Public API
*/
@ -1195,7 +1190,7 @@ void AUD_set_active_out (SWVoiceOut *sw, int on)
hw->enabled = 1;
if (s->vm_running) {
hw->pcm_ops->ctl_out (hw, VOICE_ENABLE, conf.try_poll_out);
audio_reset_timer ();
audio_reset_timer (s);
}
}
}
@ -1240,6 +1235,7 @@ void AUD_set_active_in (SWVoiceIn *sw, int on)
hw->enabled = 1;
if (s->vm_running) {
hw->pcm_ops->ctl_in (hw, VOICE_ENABLE, conf.try_poll_in);
audio_reset_timer (s);
}
}
sw->total_hw_samples_acquired = hw->total_samples_captured;
@ -1761,7 +1757,7 @@ static void audio_vm_change_state_handler (void *opaque, int running,
while ((hwi = audio_pcm_hw_find_any_enabled_in (hwi))) {
hwi->pcm_ops->ctl_in (hwi, op, conf.try_poll_in);
}
audio_reset_timer ();
audio_reset_timer (s);
}
static void audio_atexit (void)