1/*
2 * Copyright (C) 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#ifndef ANDROID_EFFECT_ENVIRONMENTALREVERB_H_
18#define ANDROID_EFFECT_ENVIRONMENTALREVERB_H_
19
20#include <hardware/audio_effect.h>
21
22#if __cplusplus
23extern "C" {
24#endif
25
26#ifndef OPENSL_ES_H_
27static const effect_uuid_t SL_IID_ENVIRONMENTALREVERB_ = { 0xc2e5d5f0, 0x94bd, 0x4763, 0x9cac, { 0x4e, 0x23, 0x4d, 0x6, 0x83, 0x9e } };
28const effect_uuid_t * const SL_IID_ENVIRONMENTALREVERB = &SL_IID_ENVIRONMENTALREVERB_;
29#endif //OPENSL_ES_H_
30
31/* enumerated parameter settings for environmental reverb effect */
32typedef enum
33{
34    // Parameters below are as defined in OpenSL ES specification for environmental reverb interface
35    REVERB_PARAM_ROOM_LEVEL,            // in millibels,    range -6000 to 0
36    REVERB_PARAM_ROOM_HF_LEVEL,         // in millibels,    range -4000 to 0
37    REVERB_PARAM_DECAY_TIME,            // in milliseconds, range 100 to 20000
38    REVERB_PARAM_DECAY_HF_RATIO,        // in permilles,    range 100 to 1000
39    REVERB_PARAM_REFLECTIONS_LEVEL,     // in millibels,    range -6000 to 0
40    REVERB_PARAM_REFLECTIONS_DELAY,     // in milliseconds, range 0 to 65
41    REVERB_PARAM_REVERB_LEVEL,          // in millibels,    range -6000 to 0
42    REVERB_PARAM_REVERB_DELAY,          // in milliseconds, range 0 to 65
43    REVERB_PARAM_DIFFUSION,             // in permilles,    range 0 to 1000
44    REVERB_PARAM_DENSITY,               // in permilles,    range 0 to 1000
45    REVERB_PARAM_PROPERTIES,
46    REVERB_PARAM_BYPASS
47} t_env_reverb_params;
48
49//t_reverb_settings is equal to SLEnvironmentalReverbSettings defined in OpenSL ES specification.
50typedef struct s_reverb_settings {
51    int16_t     roomLevel;
52    int16_t     roomHFLevel;
53    uint32_t    decayTime;
54    int16_t     decayHFRatio;
55    int16_t     reflectionsLevel;
56    uint32_t    reflectionsDelay;
57    int16_t     reverbLevel;
58    uint32_t    reverbDelay;
59    int16_t     diffusion;
60    int16_t     density;
61} __attribute__((packed)) t_reverb_settings;
62
63
64#if __cplusplus
65}  // extern "C"
66#endif
67
68
69#endif /*ANDROID_EFFECT_ENVIRONMENTALREVERB_H_*/
70