Huami: Send media volume to device

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/EventHandler.java

@@ -60,6 +60,13 @@ public interface EventHandler {
 
     void onSetMusicInfo(MusicSpec musicSpec);
 
+    /**
+     * Sets the current phone media volume.
+     *
+     * @param volume the volume percentage (0 to 100).
+     */
+    void onSetPhoneVolume(final float volume);
+
     void onEnableRealtimeSteps(boolean enable);
 
     void onInstallApp(Uri uri);

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/impl/GBDeviceService.java

@@ -224,6 +224,13 @@ public class GBDeviceService implements DeviceService {
         invokeService(intent);
     }
 
+    @Override
+    public void onSetPhoneVolume(final float volume) {
+        Intent intent = createIntent().setAction(ACTION_SET_PHONE_VOLUME)
+                .putExtra(EXTRA_PHONE_VOLUME, volume);
+        invokeService(intent);
+    }
+
     @Override
     public void onSetReminders(ArrayList<? extends Reminder> reminders) {
         Intent intent = createIntent().setAction(ACTION_SET_REMINDERS)

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/model/DeviceService.java

@@ -39,6 +39,7 @@ public interface DeviceService extends EventHandler {
     String ACTION_SETTIME = PREFIX + ".action.settime";
     String ACTION_SETMUSICINFO = PREFIX + ".action.setmusicinfo";
     String ACTION_SETMUSICSTATE = PREFIX + ".action.setmusicstate";
+    String ACTION_SET_PHONE_VOLUME = PREFIX + ".action.set_phone_volume";
     String ACTION_REQUEST_DEVICEINFO = PREFIX + ".action.request_deviceinfo";
     String ACTION_REQUEST_APPINFO = PREFIX + ".action.request_appinfo";
     String ACTION_REQUEST_SCREENSHOT = PREFIX + ".action.request_screenshot";
@@ -103,6 +104,7 @@ public interface DeviceService extends EventHandler {
     String EXTRA_MUSIC_REPEAT = "music_repeat";
     String EXTRA_MUSIC_POSITION = "music_position";
     String EXTRA_MUSIC_RATE = "music_rate";
+    String EXTRA_PHONE_VOLUME = "phone_volume";
     String EXTRA_APP_UUID = "app_uuid";
     String EXTRA_APP_START = "app_start";
     String EXTRA_APP_CONFIG = "app_config";

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/DeviceCommunicationService.java

@@ -120,6 +120,7 @@ import static nodomain.freeyourgadget.gadgetbridge.model.DeviceService.ACTION_SE
 import static nodomain.freeyourgadget.gadgetbridge.model.DeviceService.ACTION_SET_FM_FREQUENCY;
 import static nodomain.freeyourgadget.gadgetbridge.model.DeviceService.ACTION_SET_HEARTRATE_MEASUREMENT_INTERVAL;
 import static nodomain.freeyourgadget.gadgetbridge.model.DeviceService.ACTION_SET_LED_COLOR;
+import static nodomain.freeyourgadget.gadgetbridge.model.DeviceService.ACTION_SET_PHONE_VOLUME;
 import static nodomain.freeyourgadget.gadgetbridge.model.DeviceService.ACTION_SET_REMINDERS;
 import static nodomain.freeyourgadget.gadgetbridge.model.DeviceService.ACTION_SET_WORLD_CLOCKS;
 import static nodomain.freeyourgadget.gadgetbridge.model.DeviceService.ACTION_START;
@@ -174,6 +175,7 @@ import static nodomain.freeyourgadget.gadgetbridge.model.DeviceService.EXTRA_NOT
 import static nodomain.freeyourgadget.gadgetbridge.model.DeviceService.EXTRA_NOTIFICATION_SUBJECT;
 import static nodomain.freeyourgadget.gadgetbridge.model.DeviceService.EXTRA_NOTIFICATION_TITLE;
 import static nodomain.freeyourgadget.gadgetbridge.model.DeviceService.EXTRA_NOTIFICATION_TYPE;
+import static nodomain.freeyourgadget.gadgetbridge.model.DeviceService.EXTRA_PHONE_VOLUME;
 import static nodomain.freeyourgadget.gadgetbridge.model.DeviceService.EXTRA_RECORDED_DATA_TYPES;
 import static nodomain.freeyourgadget.gadgetbridge.model.DeviceService.EXTRA_REMINDERS;
 import static nodomain.freeyourgadget.gadgetbridge.model.DeviceService.EXTRA_RESET_FLAGS;
@@ -533,6 +535,10 @@ public class DeviceCommunicationService extends Service implements SharedPrefere
                 musicSpec.trackNr = intent.getIntExtra(EXTRA_MUSIC_TRACKNR, 0);
                 mDeviceSupport.onSetMusicInfo(musicSpec);
                 break;
+            case ACTION_SET_PHONE_VOLUME:
+                float phoneVolume = intent.getFloatExtra(EXTRA_PHONE_VOLUME, 0);
+                mDeviceSupport.onSetPhoneVolume(phoneVolume);
+                break;
             case ACTION_SETMUSICSTATE:
                 MusicStateSpec stateSpec = new MusicStateSpec();
                 stateSpec.shuffle = intent.getByteExtra(EXTRA_MUSIC_SHUFFLE, (byte) 0);

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/ServiceDeviceSupport.java

@@ -207,6 +207,14 @@ public class ServiceDeviceSupport implements DeviceSupport {
         delegate.onSetMusicInfo(musicSpec);
     }
 
+    @Override
+    public void onSetPhoneVolume(float volume) {
+        if (checkBusy("set phone volume")) {
+            return;
+        }
+        delegate.onSetPhoneVolume(volume);
+    }
+
     @Override
     public void onInstallApp(Uri uri) {
         if (checkBusy("install app")) {

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/btle/AbstractBTLEDeviceSupport.java

@@ -374,6 +374,11 @@ public abstract class AbstractBTLEDeviceSupport extends AbstractDeviceSupport im
 
     }
 
+    @Override
+    public void onSetPhoneVolume(final float volume) {
+
+    }
+
     @Override
     public void onSetReminders(ArrayList<? extends Reminder> reminders) {
 

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/huami/HuamiSupport.java

@@ -26,6 +26,7 @@ import android.content.Intent;
 import android.content.SharedPreferences;
 import android.content.pm.ApplicationInfo;
 import android.content.pm.PackageManager;
+import android.media.AudioManager;
 import android.net.Uri;
 import android.widget.Toast;
 
@@ -1230,11 +1231,40 @@ public class HuamiSupport extends AbstractBTLEDeviceSupport {
         }
     }
 
-
     private void sendMusicStateToDevice() {
         sendMusicStateToDevice(bufferMusicSpec, bufferMusicStateSpec);
     }
 
+    @Override
+    public void onSetPhoneVolume(final float volume) {
+        if (characteristicChunked == null) {
+            return;
+        }
+
+        final byte[] volumeCommand = new byte[]{0x40, (byte) Math.round(volume)};
+
+        try {
+            final TransactionBuilder builder = performInitialized("send volume");
+            writeToChunked(builder, 3, volumeCommand);
+
+            builder.queue(getQueue());
+        } catch (final IOException e) {
+            LOG.error("Unable to send volume", e);
+        }
+
+        LOG.info("sendVolumeStateToDevice: {}", volume);
+    }
+
+    private void sendVolumeStateToDevice() {
+        final AudioManager audioManager = (AudioManager) getContext().getSystemService(Context.AUDIO_SERVICE);
+
+        final int volumeLevel = audioManager.getStreamVolume(AudioManager.STREAM_MUSIC);
+        final int volumeMax = audioManager.getStreamMaxVolume(AudioManager.STREAM_MUSIC);
+        final int volumePercentage = (byte) Math.round(100 * (volumeLevel / (float) volumeMax));
+
+        onSetPhoneVolume(volumePercentage);
+    }
+
     protected void sendMusicStateToDevice(MusicSpec musicSpec, MusicStateSpec musicStateSpec) {
         if (characteristicChunked == null) {
             return;
@@ -1712,6 +1742,7 @@ public class HuamiSupport extends AbstractBTLEDeviceSupport {
                         LOG.info("Music app started");
                         isMusicAppStarted = true;
                         sendMusicStateToDevice();
+                        sendVolumeStateToDevice();
                         break;
                     case (byte) 225:
                         LOG.info("Music app terminated");

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

@@ -76,6 +76,12 @@ public class GBMusicControlReceiver extends BroadcastReceiver {
             case VOLUMEDOWN:
                 AudioManager audioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE);
                 audioManager.adjustStreamVolume(AudioManager.STREAM_MUSIC, volumeAdjust, 0);
+
+                final int volumeLevel = audioManager.getStreamVolume(AudioManager.STREAM_MUSIC);
+                final int volumeMax = audioManager.getStreamMaxVolume(AudioManager.STREAM_MUSIC);
+                final int volumePercentage = (byte) Math.round(100 * (volumeLevel / (float) volumeMax));
+
+                GBApplication.deviceService().onSetPhoneVolume(volumePercentage);
                 break;
             default:
                 return;

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/serial/AbstractSerialDeviceSupport.java

@@ -158,6 +158,12 @@ public abstract class AbstractSerialDeviceSupport extends AbstractDeviceSupport
         sendToDevice(bytes);
     }
 
+    @Override
+    public void onSetPhoneVolume(final float volume) {
+        byte[] bytes = gbDeviceProtocol.encodeVolume(volume);
+        sendToDevice(bytes);
+    }
+
     @Override
     public void onAppInfoReq() {
         byte[] bytes = gbDeviceProtocol.encodeAppInfoReq();

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/serial/GBDeviceProtocol.java

@@ -64,6 +64,10 @@ public abstract class GBDeviceProtocol {
         return null;
     }
 
+    public byte[] encodeVolume(float volume) {
+        return null;
+    }
+
     public byte[] encodeSetMusicState(byte state, int position, int playRate, byte shuffle, byte repeat) {
         return null;
     }