public void onSaveInstanceState(Bundle out) {
        SavedState state = new SavedState();
        state.mOutputFile = mOutputFile;
        state.mSourceFilePath = mSourceFilePath;
        out.putParcelable(STATE_SAVED_KEY, state);
    }
A helper to start camera.<br/>
used by {@link AbsBoxingViewFragment}

@author ChenSL
boxing/src/main/java/com/bilibili/boxing/utils/CameraPickerHelper.java