Merge "[Output Switcher] Disable volume control if route is volume_fixed" into tm-dev

packages/SettingsLib/src/com/android/settingslib/media/MediaDevice.java

@@ -33,6 +33,7 @@ import static android.media.MediaRoute2Info.TYPE_WIRED_HEADSET;
 
 import static com.android.settingslib.media.LocalMediaManager.MediaDeviceState.STATE_SELECTED;
 
+import android.annotation.SuppressLint;
 import android.content.Context;
 import android.graphics.drawable.Drawable;
 import android.media.MediaRoute2Info;
@@ -267,6 +268,20 @@ public abstract class MediaDevice implements Comparable<MediaDevice> {
         return mType;
     }
 
+    /**
+     * Checks if route's volume is fixed, if true, we should disable volume control for the device.
+     *
+     * @return route for this device is fixed.
+     */
+    @SuppressLint("NewApi")
+    public boolean isVolumeFixed() {
+        if (mRouteInfo == null) {
+            Log.w(TAG, "RouteInfo is empty, regarded as volume fixed.");
+            return true;
+        }
+        return mRouteInfo.getVolumeHandling() == MediaRoute2Info.PLAYBACK_VOLUME_FIXED;
+    }
+
     /**
      * Transfer MediaDevice for media
      *

packages/SystemUI/src/com/android/systemui/media/dialog/MediaOutputController.java

@@ -932,8 +932,9 @@ public class MediaOutputController implements LocalMediaManager.DeviceCallback,
     }
 
     boolean isVolumeControlEnabled(@NonNull MediaDevice device) {
-        return isPlayBackInfoLocal()
+        return (isPlayBackInfoLocal()
-                || device.getDeviceType() != MediaDevice.MediaDeviceType.TYPE_CAST_GROUP_DEVICE;
+                || device.getDeviceType() != MediaDevice.MediaDeviceType.TYPE_CAST_GROUP_DEVICE)
+                && !device.isVolumeFixed();
     }
 
     @Override

packages/SystemUI/tests/src/com/android/systemui/media/dialog/MediaOutputControllerTest.java

@@ -571,4 +571,24 @@ public class MediaOutputControllerTest extends SysuiTestCase {
 
         assertThat(mMediaOutputController.getNotificationIcon()).isNull();
     }
+
+    @Test
+    public void isVolumeControlEnabled_isCastWithVolumeFixed_returnsFalse() {
+        when(mMediaDevice1.getDeviceType()).thenReturn(
+                MediaDevice.MediaDeviceType.TYPE_CAST_DEVICE);
+
+        when(mMediaDevice1.isVolumeFixed()).thenReturn(true);
+
+        assertThat(mMediaOutputController.isVolumeControlEnabled(mMediaDevice1)).isFalse();
+    }
+
+    @Test
+    public void isVolumeControlEnabled_isCastWithVolumeNotFixed_returnsTrue() {
+        when(mMediaDevice1.getDeviceType()).thenReturn(
+                MediaDevice.MediaDeviceType.TYPE_CAST_DEVICE);
+
+        when(mMediaDevice1.isVolumeFixed()).thenReturn(false);
+
+        assertThat(mMediaOutputController.isVolumeControlEnabled(mMediaDevice1)).isTrue();
+    }
 }