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93 lines
2.7 KiB
93 lines
2.7 KiB
/* |
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* Copyright (C) 2016 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@2.0; |
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import android.hardware.audio.common@2.0; |
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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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