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      1 /*
      2  * Copyright 2017 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.bluetooth.a2dp;
     18 
     19 import android.bluetooth.BluetoothCodecStatus;
     20 import android.bluetooth.BluetoothDevice;
     21 
     22 /**
     23  * Stack event sent via a callback from JNI to Java, or generated
     24  * internally by the A2DP State Machine.
     25  */
     26 public class A2dpStackEvent {
     27     // Event types for STACK_EVENT message (coming from native)
     28     private static final int EVENT_TYPE_NONE = 0;
     29     public static final int EVENT_TYPE_CONNECTION_STATE_CHANGED = 1;
     30     public static final int EVENT_TYPE_AUDIO_STATE_CHANGED = 2;
     31     public static final int EVENT_TYPE_CODEC_CONFIG_CHANGED = 3;
     32 
     33     // Do not modify without updating the HAL bt_av.h files.
     34     // Match up with btav_connection_state_t enum of bt_av.h
     35     static final int CONNECTION_STATE_DISCONNECTED = 0;
     36     static final int CONNECTION_STATE_CONNECTING = 1;
     37     static final int CONNECTION_STATE_CONNECTED = 2;
     38     static final int CONNECTION_STATE_DISCONNECTING = 3;
     39     // Match up with btav_audio_state_t enum of bt_av.h
     40     static final int AUDIO_STATE_REMOTE_SUSPEND = 0;
     41     static final int AUDIO_STATE_STOPPED = 1;
     42     static final int AUDIO_STATE_STARTED = 2;
     43 
     44     public int type = EVENT_TYPE_NONE;
     45     public BluetoothDevice device;
     46     public int valueInt = 0;
     47     public BluetoothCodecStatus codecStatus;
     48 
     49     A2dpStackEvent(int type) {
     50         this.type = type;
     51     }
     52 
     53     @Override
     54     public String toString() {
     55         // event dump
     56         StringBuilder result = new StringBuilder();
     57         result.append("A2dpStackEvent {type:" + eventTypeToString(type));
     58         result.append(", device:" + device);
     59         result.append(", value1:" + eventTypeValueIntToString(type, valueInt));
     60         if (codecStatus != null) {
     61             result.append(", codecStatus:" + codecStatus);
     62         }
     63         result.append("}");
     64         return result.toString();
     65     }
     66 
     67     private static String eventTypeToString(int type) {
     68         switch (type) {
     69             case EVENT_TYPE_NONE:
     70                 return "EVENT_TYPE_NONE";
     71             case EVENT_TYPE_CONNECTION_STATE_CHANGED:
     72                 return "EVENT_TYPE_CONNECTION_STATE_CHANGED";
     73             case EVENT_TYPE_AUDIO_STATE_CHANGED:
     74                 return "EVENT_TYPE_AUDIO_STATE_CHANGED";
     75             case EVENT_TYPE_CODEC_CONFIG_CHANGED:
     76                 return "EVENT_TYPE_CODEC_CONFIG_CHANGED";
     77             default:
     78                 return "EVENT_TYPE_UNKNOWN:" + type;
     79         }
     80     }
     81 
     82     private static String eventTypeValueIntToString(int type, int value) {
     83         switch (type) {
     84             case EVENT_TYPE_CONNECTION_STATE_CHANGED:
     85                 switch (value) {
     86                     case CONNECTION_STATE_DISCONNECTED:
     87                         return "DISCONNECTED";
     88                     case CONNECTION_STATE_CONNECTING:
     89                         return "CONNECTING";
     90                     case CONNECTION_STATE_CONNECTED:
     91                         return "CONNECTED";
     92                     case CONNECTION_STATE_DISCONNECTING:
     93                         return "DISCONNECTING";
     94                     default:
     95                         break;
     96                 }
     97                 break;
     98             case EVENT_TYPE_AUDIO_STATE_CHANGED:
     99                 switch (value) {
    100                     case AUDIO_STATE_REMOTE_SUSPEND:
    101                         return "REMOTE_SUSPEND";
    102                     case AUDIO_STATE_STOPPED:
    103                         return "STOPPED";
    104                     case AUDIO_STATE_STARTED:
    105                         return "STARTED";
    106                     default:
    107                         break;
    108                 }
    109                 break;
    110             default:
    111                 break;
    112         }
    113         return Integer.toString(value);
    114     }
    115 }
    116