1 /******************************************************************************
2 * *
3 * Copyright (C) 2023 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
21 #include <string.h>
22
23 #include "ixheaac_type_def.h"
24 #include "ixheaac_error_standards.h"
25 #include "ixheaace_common_rom.h"
26 #include "ixheaace_sbr_def.h"
27 #include "ixheaace_resampler.h"
28 #include "ixheaace_sbr_rom.h"
29 #include "ixheaace_sbr_hybrid.h"
30 #include "ixheaac_constants.h"
31 #include "ixheaace_aac_constants.h"
32
33 WORD32
ixheaace_create_hybrid_filter_bank(ixheaace_pstr_hybrid pstr_hybrid,FLOAT32 ** pptr_flt)34 ixheaace_create_hybrid_filter_bank(ixheaace_pstr_hybrid pstr_hybrid, FLOAT32 **pptr_flt) {
35 LOOPINDEX i;
36 FLOAT32 *ptr_flt = *pptr_flt;
37
38 pstr_hybrid->ptr_work_real = ptr_flt;
39 ptr_flt += (IXHEAACE_QMF_TIME_SLOTS + IXHEAACE_QMF_BUFFER_MOVE);
40 pstr_hybrid->ptr_work_imag = ptr_flt;
41 ptr_flt += (IXHEAACE_QMF_TIME_SLOTS + IXHEAACE_QMF_BUFFER_MOVE);
42
43 pstr_hybrid->ptr_qmf_buf_real = (FLOAT32 **)ptr_flt;
44 ptr_flt += IXHEAACE_NUM_QMF_BANDS_IN_HYBRID * sizeof(FLOAT32 *) / sizeof(FLOAT32);
45
46 pstr_hybrid->ptr_qmf_buf_imag = (FLOAT32 **)ptr_flt;
47 ptr_flt += IXHEAACE_NUM_QMF_BANDS_IN_HYBRID * sizeof(FLOAT32 *) / sizeof(FLOAT32);
48
49 for (i = 0; i < IXHEAACE_NUM_QMF_BANDS_IN_HYBRID; i++) {
50 pstr_hybrid->ptr_qmf_buf_real[i] = ptr_flt;
51 ptr_flt += IXHEAACE_QMF_BUFFER_MOVE;
52
53 memset(pstr_hybrid->ptr_qmf_buf_real[i], 0,
54 IXHEAACE_QMF_BUFFER_MOVE * sizeof(pstr_hybrid->ptr_qmf_buf_real[0]));
55
56 pstr_hybrid->ptr_qmf_buf_imag[i] = ptr_flt;
57 ptr_flt += IXHEAACE_QMF_BUFFER_MOVE;
58
59 memset(pstr_hybrid->ptr_qmf_buf_imag[i], 0,
60 IXHEAACE_QMF_BUFFER_MOVE * sizeof(pstr_hybrid->ptr_qmf_buf_imag[0]));
61 }
62
63 *pptr_flt = ptr_flt;
64 return IA_NO_ERROR;
65 }
66