content: /*
   * Copyright (C) 2014 The Android Open Source Project
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package android.media;
  
  import android.annotation.UnsupportedAppUsage;
  
  
  /**
   * An AudioPatch describes a connection between audio sources and audio sinks.
   * An audio source can be an output mix (playback AudioBus) or an input device (microphone).
   * An audio sink can be an output device (speaker) or an input mix (capture AudioBus).
   * An AudioPatch is created by AudioManager.createAudioPatch() and released by
   * AudioManager.releaseAudioPatch()
   * It contains the list of source and sink AudioPortConfig showing audio port configurations
   * being connected.
   * @hide
   */
  public class AudioPatch {
  
      @UnsupportedAppUsage
      private final AudioHandle mHandle;
      private final AudioPortConfig[] mSources;
      private final AudioPortConfig[] mSinks;
  
      @UnsupportedAppUsage
      AudioPatch(AudioHandle patchHandle, AudioPortConfig[] sources, AudioPortConfig[] sinks) {
          mHandle = patchHandle;
          mSources = sources;
          mSinks = sinks;
      }
  
      /**
       * Retrieve the list of sources of this audio patch.
       */
      @UnsupportedAppUsage
      public AudioPortConfig[] sources() {
          return mSources;
      }
  
      /**
       * Retreive the list of sinks of this audio patch.
       */
      @UnsupportedAppUsage
      public AudioPortConfig[] sinks() {
          return mSinks;
      }
  
      /**
       * Get the system unique patch ID.
       */
      public int id() {
          return mHandle.id();
      }
  
      @Override
      public String toString() {
          StringBuilder s = new StringBuilder();
          s.append("mHandle: ");
          s.append(mHandle.toString());
  
          s.append(" mSources: {");
          for (AudioPortConfig source : mSources) {
              s.append(source.toString());
              s.append(", ");
          }
          s.append("} mSinks: {");
          for (AudioPortConfig sink : mSinks) {
              s.append(sink.toString());
              s.append(", ");
          }
          s.append("}");
  
          return s.toString();
      }
  }
  