[client] audio: update PureSpice and add support for volume control/mute

client/include/interface/audiodev.h

@@ -50,6 +50,12 @@ struct LG_AudioDevOps
 
   /* called when SPICE reports the audio stream has stopped */
   void (*stop)(void);
+
+  /* [optional] called to set the volume of the channels */
+  void (*volume)(int channels, const uint16_t volume[]);
+
+  /* [optional] called to set muting of the output */
+  void (*mute)(bool mute);
 };
 
 #define ASSERT_LG_AUDIODEV_VALID(x) \

client/src/main.c

@@ -899,14 +899,26 @@ void audioStart(int channels, int sampleRate, PSAudioFormat format,
   }
 }
 
-void audioStop(void)
+static void audioStop(void)
 {
   if (g_state.audioDev)
     g_state.audioDev->stop();
   g_state.audioStarted = false;
 }
 
-void audioData(uint8_t * data, size_t size)
+static void audioVolume(int channels, const uint16_t volume[])
+{
+  if (g_state.audioDev && g_state.audioDev->volume)
+    g_state.audioDev->volume(channels, volume);
+}
+
+static void audioMute(bool mute)
+{
+  if (g_state.audioDev && g_state.audioDev->mute)
+    g_state.audioDev->mute(mute);
+}
+
+static void audioData(uint8_t * data, size_t size)
 {
   if (g_state.audioDev)
     g_state.audioDev->play(data, size);
@@ -1001,6 +1013,8 @@ static int lg_run(void)
     if (g_params.useSpiceAudio)
       spice_set_audio_cb(
           audioStart,
+          audioVolume,
+          audioMute,
           audioStop,
           audioData);