[Qemu-devel] [PATCH v3 22/50] audio: do not run each backend in audio_run

[Kővágó, Zoltán]

audio_run is called manually by alsa and oss backends when polling.
In this case only the requesting backend should be run, not all of them.

Signed-off-by: Kővágó, Zoltán <dirty.ice...@gmail.com>
---
 audio/audio_int.h |  2 +-
 audio/alsaaudio.c |  7 +++++--
 audio/audio.c     | 14 +++++---------
 audio/ossaudio.c  | 12 ++++++------
 4 files changed, 17 insertions(+), 18 deletions(-)

diff --git a/audio/audio_int.h b/audio/audio_int.h
index 5ceea76eda..02ec6ea738 100644
--- a/audio/audio_int.h
+++ b/audio/audio_int.h
@@ -220,7 +220,7 @@ int audio_pcm_hw_clip_out (HWVoiceOut *hw, void *pcm_buf,
 int audio_bug (const char *funcname, int cond);
 void *audio_calloc (const char *funcname, int nmemb, size_t size);
 
-void audio_run (const char *msg);
+void audio_run(AudioState *s, const char *msg);
 
 #define VOICE_ENABLE 1
 #define VOICE_DISABLE 2
diff --git a/audio/alsaaudio.c b/audio/alsaaudio.c
index c68bd6bf8a..9dfd5fd26f 100644
--- a/audio/alsaaudio.c
+++ b/audio/alsaaudio.c
@@ -38,6 +38,7 @@ struct pollhlp {
     struct pollfd *pfds;
     int count;
     int mask;
+    AudioState *s;
 };
 
 typedef struct ALSAVoiceOut {
@@ -198,11 +199,11 @@ static void alsa_poll_handler (void *opaque)
         break;
 
     case SND_PCM_STATE_PREPARED:
-        audio_run ("alsa run (prepared)");
+        audio_run(hlp->s, "alsa run (prepared)");
         break;
 
     case SND_PCM_STATE_RUNNING:
-        audio_run ("alsa run (running)");
+        audio_run (hlp->s, "alsa run (running)");
         break;
 
     default:
@@ -756,6 +757,7 @@ static int alsa_init_out(HWVoiceOut *hw, struct audsettings 
*as,
         return -1;
     }
 
+    alsa->pollhlp.s = hw->s;
     alsa->handle = handle;
     alsa->dev = dev;
     return 0;
@@ -857,6 +859,7 @@ static int alsa_init_in(HWVoiceIn *hw, struct audsettings 
*as, void *drv_opaque)
         return -1;
     }
 
+    alsa->pollhlp.s = hw->s;
     alsa->handle = handle;
     alsa->dev = dev;
     return 0;
diff --git a/audio/audio.c b/audio/audio.c
index 5f809d13f4..4d0d316ce3 100644
--- a/audio/audio.c
+++ b/audio/audio.c
@@ -838,7 +838,7 @@ static void audio_timer (void *opaque)
     }
     s->timer_last = now;
 
-    audio_run("timer");
+    audio_run(s, "timer");
     audio_reset_timer(s);
 }
 
@@ -1240,15 +1240,11 @@ static void audio_run_capture (AudioState *s)
     }
 }
 
-void audio_run (const char *msg)
+void audio_run(AudioState *s, const char *msg)
 {
-    AudioState *s;
-
-    QTAILQ_FOREACH(s, &audio_states, list) {
-        audio_run_out (s);
-        audio_run_in (s);
-        audio_run_capture (s);
-    }
+    audio_run_out(s);
+    audio_run_in(s);
+    audio_run_capture(s);
 
 #ifdef DEBUG_POLL
     {
diff --git a/audio/ossaudio.c b/audio/ossaudio.c
index b6ab3e83ef..bbcc44129d 100644
--- a/audio/ossaudio.c
+++ b/audio/ossaudio.c
@@ -109,28 +109,28 @@ static void oss_anal_close (int *fdp)
 
 static void oss_helper_poll_out (void *opaque)
 {
-    (void) opaque;
-    audio_run ("oss_poll_out");
+    AudioState *s = opaque;
+    audio_run(s, "oss_poll_out");
 }
 
 static void oss_helper_poll_in (void *opaque)
 {
-    (void) opaque;
-    audio_run ("oss_poll_in");
+    AudioState *s = opaque;
+    audio_run(s, "oss_poll_in");
 }
 
 static void oss_poll_out (HWVoiceOut *hw)
 {
     OSSVoiceOut *oss = (OSSVoiceOut *) hw;
 
-    qemu_set_fd_handler (oss->fd, NULL, oss_helper_poll_out, NULL);
+    qemu_set_fd_handler(oss->fd, NULL, oss_helper_poll_out, hw->s);
 }
 
 static void oss_poll_in (HWVoiceIn *hw)
 {
     OSSVoiceIn *oss = (OSSVoiceIn *) hw;
 
-    qemu_set_fd_handler (oss->fd, oss_helper_poll_in, NULL, NULL);
+    qemu_set_fd_handler(oss->fd, oss_helper_poll_in, NULL, hw->s);
 }
 
 static int oss_write (SWVoiceOut *sw, void *buf, int len)
-- 
2.20.1