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      1 /*
      2  * Copyright (C) 2013 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.android.camera;
     18 
     19 import android.net.Uri;
     20 
     21 /**
     22  * The interface for background image processing task manager.
     23  */
     24 public interface ImageTaskManager {
     25 
     26     /**
     27      * Callback interface for task events.
     28      */
     29     public interface TaskListener {
     30         public void onTaskQueued(String filePath, Uri imageUri);
     31         public void onTaskDone(String filePath, Uri imageUri);
     32         public void onTaskProgress(
     33                 String filePath, Uri imageUri, int progress);
     34     }
     35 
     36     public void addTaskListener(TaskListener l);
     37 
     38     public void removeTaskListener(TaskListener l);
     39 
     40     /**
     41      * Get task progress by Uri.
     42      *
     43      * @param uri         The Uri of the final image file to identify the task.
     44      * @return            Integer from 0 to 100, or -1. The percentage of the task done
     45      *                    so far. -1 means not found.
     46      */
     47     public int getTaskProgress(Uri uri);
     48 }
     49