94 lines
2.7 KiB
Text
94 lines
2.7 KiB
Text
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/*
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* Copyright (C) 2019 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package android.hardware.audio.effect@6.0;
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import android.hardware.audio.common@6.0;
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import IEffect;
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interface IEqualizerEffect extends IEffect {
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/**
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* Gets the number of frequency bands that the equalizer supports.
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*/
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getNumBands() generates (Result retval, uint16_t numBands);
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/**
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* Returns the minimum and maximum band levels supported.
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*/
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getLevelRange()
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generates (Result retval, int16_t minLevel, int16_t maxLevel);
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/**
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* Sets the gain for the given equalizer band.
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*/
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setBandLevel(uint16_t band, int16_t level) generates (Result retval);
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/**
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* Gets the gain for the given equalizer band.
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*/
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getBandLevel(uint16_t band) generates (Result retval, int16_t level);
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/**
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* Gets the center frequency of the given band, in milliHertz.
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*/
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getBandCenterFrequency(uint16_t band)
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generates (Result retval, uint32_t centerFreqmHz);
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/**
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* Gets the frequency range of the given frequency band, in milliHertz.
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*/
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getBandFrequencyRange(uint16_t band)
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generates (Result retval, uint32_t minFreqmHz, uint32_t maxFreqmHz);
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/**
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* Gets the band that has the most effect on the given frequency
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* in milliHertz.
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*/
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getBandForFrequency(uint32_t freqmHz)
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generates (Result retval, uint16_t band);
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/**
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* Gets the names of all presets the equalizer supports.
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*/
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getPresetNames() generates (Result retval, vec<string> names);
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/**
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* Sets the current preset using the index of the preset in the names
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* vector returned via 'getPresetNames'.
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*/
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setCurrentPreset(uint16_t preset) generates (Result retval);
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/**
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* Gets the current preset.
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*/
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getCurrentPreset() generates (Result retval, uint16_t preset);
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struct AllProperties {
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uint16_t curPreset;
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vec<int16_t> bandLevels;
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};
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/**
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* Sets all properties at once.
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*/
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setAllProperties(AllProperties properties) generates (Result retval);
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/**
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* Gets all properties at once.
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*/
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getAllProperties() generates (Result retval, AllProperties properties);
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};
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