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      1 /*
      2  * Copyright (C) 2014 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.media;
     18 
     19 /**
     20  * The AudioMixPort is a specialized type of AudioPort
     21  * describing an audio mix or stream at an input or output stream of the audio
     22  * framework.
     23  * In addition to base audio port attributes, the mix descriptor contains:
     24  * - the unique audio I/O handle assigned by AudioFlinger to this mix.
     25  * @see AudioPort
     26  * @hide
     27  */
     28 
     29 public class AudioMixPort extends AudioPort {
     30 
     31     private final int mIoHandle;
     32 
     33     AudioMixPort(AudioHandle handle, int ioHandle, int role, String deviceName,
     34             int[] samplingRates, int[] channelMasks, int[] channelIndexMasks,
     35             int[] formats, AudioGain[] gains) {
     36         super(handle, role, deviceName, samplingRates, channelMasks, channelIndexMasks,
     37                 formats, gains);
     38         mIoHandle = ioHandle;
     39     }
     40 
     41     /**
     42      * Build a specific configuration of this audio mix port for use by methods
     43      * like AudioManager.connectAudioPatch().
     44      */
     45     public AudioMixPortConfig buildConfig(int samplingRate, int channelMask, int format,
     46                                        AudioGainConfig gain) {
     47         return new AudioMixPortConfig(this, samplingRate, channelMask, format, gain);
     48     }
     49 
     50     /**
     51      * Get the device type (e.g AudioManager.DEVICE_OUT_SPEAKER)
     52      */
     53     public int ioHandle() {
     54         return mIoHandle;
     55     }
     56 
     57     @Override
     58     public boolean equals(Object o) {
     59         if (o == null || !(o instanceof AudioMixPort)) {
     60             return false;
     61         }
     62         AudioMixPort other = (AudioMixPort)o;
     63         if (mIoHandle != other.ioHandle()) {
     64             return false;
     65         }
     66 
     67         return super.equals(o);
     68     }
     69 
     70 }
     71