Re: [Qemu-devel] [PATCH 08/11] audio: do not run each backend in audio_run

["Marc-André Lureau" <marcandre.lureau@gmail.com>]

On Tue, Jul 9, 2019 at 10:51 PM Kővágó, Zoltán <dirty.ice.hu@gmail.com> wrote:
>
> 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.hu@gmail.com>


Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.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 9f01f6ad00..7e00c1332e 100644
> --- a/audio/audio_int.h
> +++ b/audio/audio_int.h
> @@ -221,7 +221,7 @@ 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 6b9e0f06af..3daa7c8f8f 100644
> --- a/audio/alsaaudio.c
> +++ b/audio/alsaaudio.c
> @@ -39,6 +39,7 @@ struct pollhlp {
>      struct pollfd *pfds;
>      int count;
>      int mask;
> +    AudioState *s;
>  };
>
>  typedef struct ALSAVoiceOut {
> @@ -199,11 +200,11 @@ 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:
> @@ -749,6 +750,7 @@ 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;
> @@ -850,6 +852,7 @@ 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 6bf30ac9b3..d73cc086b6 100644
> --- a/audio/audio.c
> +++ b/audio/audio.c
> @@ -835,7 +835,7 @@ static void audio_timer (void *opaque)
>      }
>      s->timer_last = now;
>
> -    audio_run("timer");
> +    audio_run(s, "timer");
>      audio_reset_timer(s);
>  }
>
> @@ -1237,15 +1237,11 @@ 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 29139ef1f5..456fba7480 100644
> --- a/audio/ossaudio.c
> +++ b/audio/ossaudio.c
> @@ -110,28 +110,28 @@ 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)
> --
> 2.22.0
>
>


--
Marc-André Lureau