aout: convert audio output "volume" to float

src/audio_output/common.c

@@ -73,7 +73,7 @@ audio_output_t *aout_New( vlc_object_t * p_parent )
     vlc_value_t val, text;
     char *str;
 
-    var_Create (aout, "volume", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
+    var_Create (aout, "volume", VLC_VAR_FLOAT);
     var_Create (aout, "mute", VLC_VAR_BOOL | VLC_VAR_DOINHERIT);
 
     /* Visualizations */

src/audio_output/intf.c

@@ -72,9 +72,9 @@ float aout_VolumeGet (vlc_object_t *obj)
     if (aout == NULL)
         return -1.f;
 
-    long l = var_InheritInteger (aout, "volume");
+    float volume = var_GetFloat (aout, "volume");
     vlc_object_release (aout);
-    return l / (float)AOUT_VOLUME_DEFAULT;
+    return volume;
 }
 
 #undef aout_VolumeSet

src/audio_output/output.c

@@ -91,11 +91,7 @@ static void aout_OutputTimeReport (audio_output_t *aout, mtime_t ideal)
  */
 static void aout_OutputVolumeReport (audio_output_t *aout, float volume)
 {
-    long vol = lroundf (volume * (float)AOUT_VOLUME_DEFAULT);
-
-    /* We cannot acquire the volume lock as this gets called from the audio
-     * output plug-in (it would cause a lock inversion). */
-    var_SetInteger (aout, "volume", vol);
+    var_SetFloat (aout, "volume", volume);
 }
 
 static void aout_OutputMuteReport (audio_output_t *aout, bool mute)