Get voice event out of playback.c

Purpose: A step in removing all voice references from playback code
and prelude to other changes.

Change-Id: Ic3ad7f7a33b979693e18a3456ced37eb1d2281a4

apps/appevents.h

@@ -52,9 +52,13 @@ enum {
     /* Next track medadata was just loaded
        data = &(struct track_event){} */
     PLAYBACK_EVENT_NEXTTRACKID3_AVAILABLE,
+};
+
+/** VOICE events **/
+enum {
     /* Voice is playing
        data = &(bool){true|false} */
-    PLAYBACK_EVENT_VOICE_PLAYING,
+    VOICE_EVENT_IS_PLAYING = (EVENT_CLASS_VOICE|1),
 };
 
 /** Buffering events **/

apps/audio_thread.c

@@ -27,6 +27,8 @@
 #include "usb.h"
 #include "pcm.h"
 #include "sound.h"
+#include "pcmbuf.h"
+#include "appevents.h"
 #include "audio_thread.h"
 #ifdef AUDIO_HAVE_RECORDING
 #include "pcm_record.h"
@@ -108,6 +110,13 @@ static void NORETURN_ATTR audio_thread(void)
     }
 }
 
+void audio_voice_event(unsigned short id, void *data)
+{
+    (void)id;
+    /* Make audio play softly while voice is speaking */
+    pcmbuf_soft_mode(*(bool *)data);
+}
+
 void audio_queue_post(long id, intptr_t data)
 {
     queue_post(&audio_queue, id, data);
@@ -170,6 +179,8 @@ void INIT_ATTR audio_init(void)
     recording_init();
 #endif
 
+    add_event(VOICE_EVENT_IS_PLAYING, audio_voice_event);
+
    /* Probably safe to say */
     audio_is_initialized = true;
 

apps/playback.c

@@ -355,14 +355,6 @@ void audio_pcmbuf_sync_position(void);
 
 /**************************************/
 
-/** --- voice event --- **/
-void playback_voice_event(unsigned short id, void *data)
-{
-    (void)id;
-    /* Make audio play softly while voice is speaking */
-    pcmbuf_soft_mode(*(bool *)data);
-}
-
 /** --- MP3Entry --- **/
 
 /* Does the mp3entry have enough info for us to use it? */
@@ -3888,7 +3880,6 @@ void INIT_ATTR playback_init(void)
     track_list_init();
     buffering_init();
     pcmbuf_update_frequency();
-    add_event(PLAYBACK_EVENT_VOICE_PLAYING, playback_voice_event);
 #ifdef HAVE_CROSSFADE
     /* Set crossfade setting for next buffer init which should be about... */
     pcmbuf_request_crossfade_enable(global_settings.crossfade);

apps/voice_thread.c

@@ -372,7 +372,7 @@ static enum voice_state voice_message(struct voice_thread_data *td)
         {
             voice_playing = true;
             dsp_configure(td->dsp, DSP_SET_OUT_FREQUENCY, mixer_get_frequency());
-            send_event(PLAYBACK_EVENT_VOICE_PLAYING, &voice_playing);
+            send_event(VOICE_EVENT_IS_PLAYING, &voice_playing);
         }
 
         quiet_counter = QUIET_COUNT;
@@ -406,7 +406,7 @@ static enum voice_state voice_message(struct voice_thread_data *td)
             if (quiet_counter <= 0)
             {
                 voice_playing = false;
-                send_event(PLAYBACK_EVENT_VOICE_PLAYING, &voice_playing);
+                send_event(VOICE_EVENT_IS_PLAYING, &voice_playing);
             }
             break;
         }

firmware/export/events.h

@@ -51,6 +51,7 @@
 #define EVENT_CLASS_GUI        0x0800
 #define EVENT_CLASS_RECORDING  0x1000
 #define EVENT_CLASS_LCD        0x2000
+#define EVENT_CLASS_VOICE      0x4000
 
 /**
  * Subscribe to an event with a simple callback. The callback will be called