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
17package android.bluetooth;
18
19import android.os.Parcel;
20import android.os.Parcelable;
21
22/**
23 * Represents the audio configuration for a Bluetooth A2DP source device.
24 *
25 * {@see BluetoothA2dpSink}
26 *
27 * {@hide}
28 */
29public final class BluetoothAudioConfig implements Parcelable {
30
31    private final int mSampleRate;
32    private final int mChannelConfig;
33    private final int mAudioFormat;
34
35    public BluetoothAudioConfig(int sampleRate, int channelConfig, int audioFormat) {
36        mSampleRate = sampleRate;
37        mChannelConfig = channelConfig;
38        mAudioFormat = audioFormat;
39    }
40
41    @Override
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
53    public int hashCode() {
54        return mSampleRate | (mChannelConfig << 24) | (mAudioFormat << 28);
55    }
56
57    @Override
58    public String toString() {
59        return "{mSampleRate:" + mSampleRate + ",mChannelConfig:" + mChannelConfig
60                + ",mAudioFormat:" + mAudioFormat + "}";
61    }
62
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
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     */
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     */
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     */
108    public int getAudioFormat() {
109        return mAudioFormat;
110    }
111}
112