1 /******************************************************************************
2  *                                                                            *
3  * Copyright (C) 2018 The Android Open Source Project
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  * Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore
19 */
20 #ifndef IXHEAACD_HYBRID_H
21 #define IXHEAACD_HYBRID_H
22 
23 #define HYBRID_FILTER_LENGTH 13
24 #define HYBRID_FILTER_DELAY 6
25 #define NO_QMF_CHANNELS_IN_HYBRID 3
26 #define NO_HYBRID_CHANNELS_LOW 2
27 #define NO_HYBRID_CHANNELS_HIGH 8
28 
29 typedef struct {
30   const WORD16 *ptr_resol;
31   WORD8 ptr_qmf_buf;
32   WORD32 *ptr_work_re;
33   WORD32 *ptr_work_im;
34   WORD32 *ptr_qmf_buf_re[NO_QMF_CHANNELS_IN_HYBRID];
35   WORD32 *ptr_qmf_buf_im[NO_QMF_CHANNELS_IN_HYBRID];
36   WORD32 *ptr_temp_re;
37   WORD32 *ptr_temp_im;
38 } ia_hybrid_struct;
39 
40 VOID ixheaacd_hybrid_analysis(const WORD32 *ptr_qmf_real, WORD32 *ptr_hyb_real,
41                               WORD32 *ptr_hyb_imag,
42                               ia_hybrid_struct *ptr_hybrid, WORD16 scale,
43                               ia_sbr_tables_struct *sbr_tables_ptr);
44 
45 #endif /* IXHEAACD_HYBRID_H */
46