Implement volume control for Pebble

I didn't know how to access this on the pebble until I did a long press on
play/pause ;)

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/GBMusicControlReceiver.java

@@ -3,6 +3,7 @@ package nodomain.freeyourgadget.gadgetbridge;
 import android.content.BroadcastReceiver;
 import android.content.Context;
 import android.content.Intent;
+import android.media.AudioManager;
 import android.os.SystemClock;
 import android.view.KeyEvent;
 
@@ -16,7 +17,9 @@ public class GBMusicControlReceiver extends BroadcastReceiver {
     @Override
     public void onReceive(Context context, Intent intent) {
         GBDeviceCommandMusicControl.Command musicCmd = GBDeviceCommandMusicControl.Command.values()[intent.getIntExtra("command", 0)];
-        int keyCode;
+        int keyCode = -1;
+        int volumeAdjust = AudioManager.ADJUST_LOWER;
+
         switch (musicCmd) {
             case NEXT:
                 keyCode = KeyEvent.KEYCODE_MEDIA_NEXT;
@@ -33,20 +36,30 @@ public class GBMusicControlReceiver extends BroadcastReceiver {
             case PLAYPAUSE:
                 keyCode = KeyEvent.KEYCODE_MEDIA_PLAY_PAUSE;
                 break;
+            case VOLUMEUP:
+                // change default and fall through, :P
+                volumeAdjust = AudioManager.ADJUST_RAISE;
+            case VOLUMEDOWN:
+                AudioManager audioManager =
+                        (AudioManager) context.getSystemService(Context.AUDIO_SERVICE);
+                audioManager.adjustStreamVolume(AudioManager.STREAM_MUSIC, volumeAdjust, 0);
+                break;
             default:
                 return;
         }
 
-        long eventtime = SystemClock.uptimeMillis();
+        if (keyCode != -1) {
+            long eventtime = SystemClock.uptimeMillis();
 
-        Intent downIntent = new Intent(Intent.ACTION_MEDIA_BUTTON, null);
+            Intent downIntent = new Intent(Intent.ACTION_MEDIA_BUTTON, null);
-        KeyEvent downEvent = new KeyEvent(eventtime, eventtime, KeyEvent.ACTION_DOWN, keyCode, 0);
+            KeyEvent downEvent = new KeyEvent(eventtime, eventtime, KeyEvent.ACTION_DOWN, keyCode, 0);
-        downIntent.putExtra(Intent.EXTRA_KEY_EVENT, downEvent);
+            downIntent.putExtra(Intent.EXTRA_KEY_EVENT, downEvent);
-        context.sendOrderedBroadcast(downIntent, null);
+            context.sendOrderedBroadcast(downIntent, null);
 
-        Intent upIntent = new Intent(Intent.ACTION_MEDIA_BUTTON, null);
+            Intent upIntent = new Intent(Intent.ACTION_MEDIA_BUTTON, null);
-        KeyEvent upEvent = new KeyEvent(eventtime, eventtime, KeyEvent.ACTION_UP, keyCode, 0);
+            KeyEvent upEvent = new KeyEvent(eventtime, eventtime, KeyEvent.ACTION_UP, keyCode, 0);
-        upIntent.putExtra(Intent.EXTRA_KEY_EVENT, upEvent);
+            upIntent.putExtra(Intent.EXTRA_KEY_EVENT, upEvent);
-        context.sendOrderedBroadcast(upIntent, null);
+            context.sendOrderedBroadcast(upIntent, null);
+        }
     }
 }

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/pebble/PBWReader.java

@@ -42,7 +42,7 @@ public class PBWReader {
         try {
             while ((ze = zis.getNextEntry()) != null) {
                 String fileName = ze.getName();
-                if (fileName.equals("pebble-app.bin") || fileName.equals("pebble-worker.bin") || fileName.equals("app_resources.pbpack")) {
+                if (fileName.equals("pebble-app.bin") || fileName.equals("pebble-worker.bin") || fileName.equals("app_resources.pbpack") || fileName.equals("")) {
                     filesToInstall.add(fileName);  // FIXME: do not hardcode filenames above
                 } else if (fileName.equals("appinfo.json")) {
                     long bytes = ze.getSize();

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/protocol/GBDeviceCommandMusicControl.java

@@ -15,5 +15,7 @@ public class GBDeviceCommandMusicControl extends GBDeviceCommand {
         PLAYPAUSE,
         NEXT,
         PREVIOUS,
+        VOLUMEUP,
+        VOLUMEDOWN,
     }
 }

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/protocol/PebbleProtocol.java

@@ -390,6 +390,12 @@ public class PebbleProtocol extends GBDeviceProtocol {
                     case MUSICCONTROL_PLAYPAUSE:
                         musicCmd.command = GBDeviceCommandMusicControl.Command.PLAYPAUSE;
                         break;
+                    case MUSICCONTROL_VOLUMEUP:
+                        musicCmd.command = GBDeviceCommandMusicControl.Command.VOLUMEUP;
+                        break;
+                    case MUSICCONTROL_VOLUMEDOWN:
+                        musicCmd.command = GBDeviceCommandMusicControl.Command.VOLUMEDOWN;
+                        break;
                     default:
                         break;
                 }