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/*
* Copyright (C) 2010 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.
*/
#ifndef ANDROID_EFFECTEQUALIZERAPI_H_
#define ANDROID_EFFECTEQUALIZERAPI_H_
#include <hardware/audio_effect.h>
#ifndef OPENSL_ES_H_
static const effect_uuid_t SL_IID_EQUALIZER_ = { 0x0bed4300, 0xddd6, 0x11db, 0x8f34, { 0x00, 0x02, 0xa5, 0xd5, 0xc5, 0x1b } };
const effect_uuid_t * const SL_IID_EQUALIZER = &SL_IID_EQUALIZER_;
#endif //OPENSL_ES_H_
#if __cplusplus
extern "C" {
#endif
/* enumerated parameters for Equalizer effect */
typedef enum
{
EQ_PARAM_NUM_BANDS, // Gets the number of frequency bands that the equalizer supports.
EQ_PARAM_LEVEL_RANGE, // Returns the minimum and maximum band levels supported.
EQ_PARAM_BAND_LEVEL, // Gets/Sets the gain set for the given equalizer band.
EQ_PARAM_CENTER_FREQ, // Gets the center frequency of the given band.
EQ_PARAM_BAND_FREQ_RANGE, // Gets the frequency range of the given frequency band.
EQ_PARAM_GET_BAND, // Gets the band that has the most effect on the given frequency.
EQ_PARAM_CUR_PRESET, // Gets/Sets the current preset.
EQ_PARAM_GET_NUM_OF_PRESETS, // Gets the total number of presets the equalizer supports.
EQ_PARAM_GET_PRESET_NAME, // Gets the preset name based on the index.
EQ_PARAM_PROPERTIES // Gets/Sets all parameters at a time.
} t_equalizer_params;
//t_equalizer_settings groups all current equalizer setting for backup and restore.
typedef struct s_equalizer_settings {
uint16_t curPreset;
uint16_t numBands;
uint16_t bandLevels[];
} t_equalizer_settings;
#if __cplusplus
} // extern "C"
#endif
#endif /*ANDROID_EFFECTEQUALIZERAPI_H_*/
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