1 /*
2  * Copyright (C) 2009 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 android.bluetooth;
18 
19 import android.os.Parcel;
20 import android.os.Parcelable;
21 
22 /**
23  * Represents the audio configuration for a Bluetooth A2DP source device.
24  *
25  * {@see BluetoothA2dpSink}
26  *
27  * {@hide}
28  */
29 public final class BluetoothAudioConfig implements Parcelable {
30 
31     private final int mSampleRate;
32     private final int mChannelConfig;
33     private final int mAudioFormat;
34 
BluetoothAudioConfig(int sampleRate, int channelConfig, int audioFormat)35     public BluetoothAudioConfig(int sampleRate, int channelConfig, int audioFormat) {
36         mSampleRate = sampleRate;
37         mChannelConfig = channelConfig;
38         mAudioFormat = audioFormat;
39     }
40 
41     @Override
equals(Object o)42     public boolean equals(Object o) {
43         if (o instanceof BluetoothAudioConfig) {
44             BluetoothAudioConfig bac = (BluetoothAudioConfig)o;
45             return (bac.mSampleRate == mSampleRate &&
46                     bac.mChannelConfig == mChannelConfig &&
47                     bac.mAudioFormat == mAudioFormat);
48         }
49         return false;
50     }
51 
52     @Override
hashCode()53     public int hashCode() {
54         return mSampleRate | (mChannelConfig << 24) | (mAudioFormat << 28);
55     }
56 
57     @Override
toString()58     public String toString() {
59         return "{mSampleRate:" + mSampleRate + ",mChannelConfig:" + mChannelConfig
60                 + ",mAudioFormat:" + mAudioFormat + "}";
61     }
62 
describeContents()63     public int describeContents() {
64         return 0;
65     }
66 
67     public static final Parcelable.Creator<BluetoothAudioConfig> CREATOR =
68             new Parcelable.Creator<BluetoothAudioConfig>() {
69         public BluetoothAudioConfig createFromParcel(Parcel in) {
70             int sampleRate = in.readInt();
71             int channelConfig = in.readInt();
72             int audioFormat = in.readInt();
73             return new BluetoothAudioConfig(sampleRate, channelConfig, audioFormat);
74         }
75         public BluetoothAudioConfig[] newArray(int size) {
76             return new BluetoothAudioConfig[size];
77         }
78     };
79 
writeToParcel(Parcel out, int flags)80     public void writeToParcel(Parcel out, int flags) {
81         out.writeInt(mSampleRate);
82         out.writeInt(mChannelConfig);
83         out.writeInt(mAudioFormat);
84     }
85 
86     /**
87      * Returns the sample rate in samples per second
88      * @return sample rate
89      */
getSampleRate()90     public int getSampleRate() {
91         return mSampleRate;
92     }
93 
94     /**
95      * Returns the channel configuration (either {@link android.media.AudioFormat#CHANNEL_IN_MONO}
96      * or {@link android.media.AudioFormat#CHANNEL_IN_STEREO})
97      * @return channel configuration
98      */
getChannelConfig()99     public int getChannelConfig() {
100         return mChannelConfig;
101     }
102 
103     /**
104      * Returns the channel audio format (either {@link android.media.AudioFormat#ENCODING_PCM_16BIT}
105      * or {@link android.media.AudioFormat#ENCODING_PCM_8BIT}
106      * @return audio format
107      */
getAudioFormat()108     public int getAudioFormat() {
109         return mAudioFormat;
110     }
111 }
112