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 23 extern "C" { 24 #endif 25 26 #ifndef OPENSL_ES_H_ 27 static const effect_uuid_t SL_IID_ENVIRONMENTALREVERB_ = { 0xc2e5d5f0, 0x94bd, 0x4763, 0x9cac, 28 { 0x4e, 0x23, 0x4d, 0x6, 0x83, 0x9e } }; 29 const effect_uuid_t * const SL_IID_ENVIRONMENTALREVERB = &SL_IID_ENVIRONMENTALREVERB_; 30 #endif //OPENSL_ES_H_ 31 32 /* enumerated parameter settings for environmental reverb effect */ 33 typedef enum 34 { 35 // Parameters below are as defined in OpenSL ES specification for environmental reverb interface 36 REVERB_PARAM_ROOM_LEVEL, // in millibels, range -6000 to 0 37 REVERB_PARAM_ROOM_HF_LEVEL, // in millibels, range -4000 to 0 38 REVERB_PARAM_DECAY_TIME, // in milliseconds, range 100 to 20000 39 REVERB_PARAM_DECAY_HF_RATIO, // in permilles, range 100 to 1000 40 REVERB_PARAM_REFLECTIONS_LEVEL, // in millibels, range -6000 to 0 41 REVERB_PARAM_REFLECTIONS_DELAY, // in milliseconds, range 0 to 65 42 REVERB_PARAM_REVERB_LEVEL, // in millibels, range -6000 to 0 43 REVERB_PARAM_REVERB_DELAY, // in milliseconds, range 0 to 65 44 REVERB_PARAM_DIFFUSION, // in permilles, range 0 to 1000 45 REVERB_PARAM_DENSITY, // in permilles, range 0 to 1000 46 REVERB_PARAM_PROPERTIES, 47 REVERB_PARAM_BYPASS 48 } t_env_reverb_params; 49 50 //t_reverb_settings is equal to SLEnvironmentalReverbSettings defined in OpenSL ES specification. 51 typedef struct s_reverb_settings { 52 int16_t roomLevel; 53 int16_t roomHFLevel; 54 uint32_t decayTime; 55 int16_t decayHFRatio; 56 int16_t reflectionsLevel; 57 uint32_t reflectionsDelay; 58 int16_t reverbLevel; 59 uint32_t reverbDelay; 60 int16_t diffusion; 61 int16_t density; 62 } __attribute__((packed)) t_reverb_settings; 63 64 65 #if __cplusplus 66 } // extern "C" 67 #endif 68 69 70 #endif /*ANDROID_EFFECT_ENVIRONMENTALREVERB_H_*/ 71
