content: /*
   * Copyright (C) 2018 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.audiofx;
  
  import android.annotation.RequiresPermission;
  import android.app.ActivityThread;
  import android.util.Log;
  import java.util.UUID;
  
  /**
   * SourceDefaultEffect is a default effect that attaches automatically to all AudioRecord and
   * MediaRecorder instances of a given source type.
   * <p>see {@link android.media.audiofx.DefaultEffect} class for more details on default effects.
   * @hide
   */
  
  public class SourceDefaultEffect extends DefaultEffect {
      static {
          System.loadLibrary("audioeffect_jni");
      }
  
      private final static String TAG = "SourceDefaultEffect-JAVA";
  
      /**
       * Class constructor.
       *
       * @param type type of effect engine to be default. This parameter is ignored if uuid is set,
       *             and can be set to {@link android.media.audiofx.AudioEffect#EFFECT_TYPE_NULL}
       *             in that case.
       * @param uuid unique identifier of a particular effect implementation to be default. This
       *             parameter can be set to
       *             {@link android.media.audiofx.AudioEffect#EFFECT_TYPE_NULL}, in which case only
       *             the type will be used to select the effect.
       * @param priority the priority level requested by the application for controlling the effect
       *             engine. As the same engine can be shared by several applications, this parameter
       *             indicates how much the requesting application needs control of effect parameters.
       *             The normal priority is 0, above normal is a positive number, below normal a
       *             negative number.
       * @param source a MediaRecorder.AudioSource.* constant from
       *             {@link android.media.MediaRecorder.AudioSource} indicating
       *             what sources the given effect should attach to by default. Note that similar
       *             sources may share defaults.
       *
       * @throws java.lang.IllegalArgumentException
       * @throws java.lang.UnsupportedOperationException
       * @throws java.lang.RuntimeException
       */
      @RequiresPermission(value = android.Manifest.permission.MODIFY_DEFAULT_AUDIO_EFFECTS,
                          conditional = true)  // Android Things uses an alternate permission.
      public SourceDefaultEffect(UUID type, UUID uuid, int priority, int source) {
          int[] id = new int[1];
          int initResult = native_setup(type.toString(),
                                        uuid.toString(),
                                        priority,
                                        source,
                                        ActivityThread.currentOpPackageName(),
                                        id);
          if (initResult != AudioEffect.SUCCESS) {
              Log.e(TAG, "Error code " + initResult + " when initializing SourceDefaultEffect");
              switch (initResult) {
                  case AudioEffect.ERROR_BAD_VALUE:
                      throw (new IllegalArgumentException(
                              "Source, type uuid, or implementation uuid not supported."));
                  case AudioEffect.ERROR_INVALID_OPERATION:
                      throw (new UnsupportedOperationException(
                              "Effect library not loaded"));
                  default:
                      throw (new RuntimeException(
                              "Cannot initialize effect engine for type: " + type
                              + " Error: " + initResult));
              }
          }
  
          mId = id[0];
      }
  
  
      /**
       * Releases the native SourceDefaultEffect resources. It is a good practice to
       * release the default effect when done with use as control can be returned to
       * other applications or the native resources released.
       */
      public void release() {
          native_release(mId);
      }
  
      @Override
      protected void finalize() {
          release();
      }
  
      // ---------------------------------------------------------
      // Native methods called from the Java side
      // --------------------
  
      private native final int native_setup(String type,
                                            String uuid,
                                            int priority,
                                            int source,
                                            String opPackageName,
                                            int[] id);
  
      private native final void native_release(int id);
  }
  