1 /******************************************************************************
2  *
3  *  Copyright 2022 Google LLC
4  *
5  *  Licensed under the Apache License, Version 2.0 (the "License");
6  *  you may not use this file except in compliance with the License.
7  *  You may obtain a copy of the License at:
8  *
9  *  http://www.apache.org/licenses/LICENSE-2.0
10  *
11  *  Unless required by applicable law or agreed to in writing, software
12  *  distributed under the License is distributed on an "AS IS" BASIS,
13  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14  *  See the License for the specific language governing permissions and
15  *  limitations under the License.
16  *
17  ******************************************************************************/
18 
19 #ifndef __LC3_ENERGY_H
20 #define __LC3_ENERGY_H
21 
22 #include "common.h"
23 
24 
25 /**
26  * Energy estimation per band
27  * dt, sr          Duration and samplerate of the frame
28  * x               Input MDCT coefficient
29  * e               Energy estimation per bands
30  * return          True when high energy detected near Nyquist frequency
31  */
32 bool lc3_energy_compute(
33     enum lc3_dt dt, enum lc3_srate sr, const float *x, float *e);
34 
35 
36 #endif /* __LC3_ENERGY_H */
37