aout: add option to initialize hardware volume

include/vlc_aout.h

@@ -221,7 +221,7 @@ VLC_API const char * aout_FormatPrintChannels( const audio_sample_format_t * ) V
 
 VLC_API void aout_VolumeNoneInit( audio_output_t * );
 VLC_API void aout_VolumeSoftInit( audio_output_t * );
-VLC_API void aout_VolumeHardInit( audio_output_t *, aout_volume_cb );
+VLC_API void aout_VolumeHardInit( audio_output_t *, aout_volume_cb, bool );
 VLC_API void aout_VolumeHardSet( audio_output_t *, float, bool );
 
 VLC_API void aout_TimeReport(audio_output_t *, mtime_t);

modules/audio_output/auhal.c

@@ -560,12 +560,7 @@ static int OpenAnalog( audio_output_t *p_aout )
     /* Do the last VLC aout setups */
     aout_FormatPrepare( &p_aout->format );
     aout_PacketInit( p_aout, &p_sys->packet, FRAMESIZE );
-    aout_VolumeHardInit( p_aout, VolumeSet );
-
-    /* Initialize starting volume */
-    audio_volume_t volume = var_InheritInteger (p_aout, "volume");
-    bool mute = var_InheritBool (p_aout, "mute");
-    VolumeSet(p_aout, volume / (float)AOUT_VOLUME_DEFAULT, mute);
+    aout_VolumeHardInit( p_aout, VolumeSet, true );
 
     /* set the IOproc callback */
     input.inputProc = (AURenderCallback) RenderCallbackAnalog;

modules/audio_output/pulse.c

@@ -947,7 +947,7 @@ static int Open(vlc_object_t *obj)
     aout->pf_play = Play;
     aout->pf_pause = Pause;
     aout->pf_flush = Flush;
-    aout_VolumeHardInit (aout, VolumeSet);
+    aout_VolumeHardInit (aout, VolumeSet, false);
     return VLC_SUCCESS;
 
 fail:

modules/audio_output/waveout.c

@@ -296,7 +296,7 @@ static int Open( vlc_object_t *p_this )
         if( waveOutGetDevCaps( (UINT_PTR)p_aout->sys->h_waveout,
                                &wocaps, sizeof(wocaps) ) == MMSYSERR_NOERROR
          && (wocaps.dwSupport & WAVECAPS_VOLUME) )
-            aout_VolumeHardInit( p_aout, VolumeSet );
+            aout_VolumeHardInit( p_aout, VolumeSet, false /* ?? */ );
         else
             aout_VolumeSoftInit( p_aout );
     }

src/audio_output/output.c

@@ -334,13 +334,22 @@ void aout_VolumeSoftInit (audio_output_t *aout)
  * Configures a custom volume setter. This is used by audio outputs that can
  * control the hardware volume directly and/or emulate it internally.
  * @param setter volume setter callback
+ * @param restore apply volume from VLC configuration immediately
  */
-void aout_VolumeHardInit (audio_output_t *aout, aout_volume_cb setter)
+void aout_VolumeHardInit (audio_output_t *aout, aout_volume_cb setter,
+                          bool restore)
 {
     aout_assert_locked (aout);
     aout->pf_volume_set = setter;
     var_Create (aout, "volume", VLC_VAR_INTEGER|VLC_VAR_DOINHERIT);
     var_Create (aout, "mute", VLC_VAR_BOOL|VLC_VAR_DOINHERIT);
+
+    if (restore)
+    {
+        float vol = var_InheritInteger (aout, "volume")
+                  / (float)AOUT_VOLUME_DEFAULT;
+        setter (aout, vol, var_InheritBool (aout, "mute"));
+    }
 }
 
 /**