1 /* 2 * Copyright (C) 2010-2011 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 com.android.audiofx; 18 19 /** 20 * OpenSL ES constants class 21 */ 22 public final class OpenSLESConstants { OpenSLESConstants()23 private OpenSLESConstants() { 24 // Empty constructor 25 } 26 27 /** 28 * Minimum volume level in millibel (mb). 29 */ 30 public static final short SL_MILLIBEL_MIN = -9600; 31 /** 32 * This value is used when equalizer setting is not defined. 33 */ 34 public static final short SL_EQUALIZER_UNDEFINED = (short) 0xFFFF; 35 36 /** 37 * The minimum bass boost strength in o/oo. 38 */ 39 public static final short BASSBOOST_MIN_STRENGTH = 0; 40 /** 41 * The maximum bass boost strength in o/oo. 42 */ 43 public static final short BASSBOOST_MAX_STRENGTH = 1000; 44 45 /** 46 * The minimum reverb room level in mb. 47 */ 48 public static final short REVERB_MIN_ROOM_LEVEL = SL_MILLIBEL_MIN; 49 /** 50 * The maximum reverb room level in mb. 51 */ 52 public static final short REVERB_MAX_ROOM_LEVEL = 0; 53 /** 54 * The minimum reverb room HF level in mb. 55 */ 56 public static final short REVERB_MIN_ROOM_HF_LEVEL = SL_MILLIBEL_MIN; 57 /** 58 * The maximum reverb room HF level in mb. 59 */ 60 public static final short REVERB_MAX_ROOM_HF_LEVEL = 0; 61 /** 62 * The minimum reverb decay time in ms. 63 */ 64 public static final short REVERB_MIN_DECAY_TIME = 100; 65 /** 66 * The maximum reverb decay time in ms. 67 */ 68 // XXX: OpenSL ES is normally 20000 but can only support 7000 for now 69 public static final short REVERB_MAX_DECAY_TIME = 7000; 70 /** 71 * The minimum reverb decay HF ratio in o/oo. 72 */ 73 public static final short REVERB_MIN_DECAY_HF_RATIO = 100; 74 /** 75 * The maximum reverb decay HF ratio in o/oo. 76 */ 77 public static final short REVERB_MAX_DECAY_HF_RATIO = 2000; 78 /** 79 * The minimum reverb level in mb. 80 */ 81 public static final short REVERB_MIN_REVERB_LEVEL = SL_MILLIBEL_MIN; 82 /** 83 * The maximum reverb level in mb. 84 */ 85 public static final short REVERB_MAX_REVERB_LEVEL = 2000; 86 /** 87 * The minimum reverb diffusion in o/oo. 88 */ 89 public static final short REVERB_MIN_DIFFUSION = 0; 90 /** 91 * The maximum reverb diffusion in o/oo. 92 */ 93 public static final short REVERB_MAX_DIFFUSION = 1000; 94 /** 95 * The minimum reverb density in o/oo. 96 */ 97 public static final short REVERB_MIN_DENSITY = 0; 98 /** 99 * The maximum reverb density in o/oo. 100 */ 101 public static final short REVERB_MAX_DENSITY = 1000; 102 103 /** 104 * The minimum virtualizer strength in o/oo. 105 */ 106 public static final short VIRTUALIZER_MIN_STRENGTH = 0; 107 /** 108 * The maximum virtualizer strength in o/oo. 109 */ 110 public static final short VIRTUALIZER_MAX_STRENGTH = 1000; 111 112 /** 113 * The minimum volume effect level in millibel (mb). 114 */ 115 public static final short VOLUME_MIN_LEVEL = SL_MILLIBEL_MIN; 116 /** 117 * The minimum volume stereo position in o/oo. 118 */ 119 public static final short VOLUME_MIN_STEREO_POSITION = -1000; 120 /** 121 * The maximum volume stereo position in o/oo. 122 */ 123 public static final short VOLUME_MAX_STEREO_POSITION = 1000; 124 } 125