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 #define NO_HYBRID_CHANNELS_2 2 30 #define NO_HYBRID_CHANNELS_4 4 31 #define NO_HYBRID_CHANNELS_8 8 32 #define NO_HYBRID_CHANNELS_12 12 33 #define MAX_NUM_QMF_CHANNELS 64 34 35 #define REAL 0 36 #define CPLX 1 37 38 typedef struct { 39 const WORD16 *ptr_resol; 40 WORD8 ptr_qmf_buf; 41 WORD32 *ptr_work_re; 42 WORD32 *ptr_work_im; 43 WORD32 *ptr_qmf_buf_re[NO_QMF_CHANNELS_IN_HYBRID]; 44 WORD32 *ptr_qmf_buf_im[NO_QMF_CHANNELS_IN_HYBRID]; 45 WORD32 *ptr_temp_re; 46 WORD32 *ptr_temp_im; 47 } ia_hybrid_struct; 48 49 typedef struct { 50 WORD32 num_qmf_bands; 51 WORD32 frame_size; 52 WORD16 *ptr_resol; 53 FLOAT32 *ptr_work_re; 54 FLOAT32 *ptr_work_im; 55 FLOAT32 (*ptr_qmf_buf_re)[HYBRID_FILTER_LENGTH - 1]; 56 FLOAT32 (*ptr_qmf_buf_im)[HYBRID_FILTER_LENGTH - 1]; 57 FLOAT32 (*ptr_temp_re)[MAX_NUM_QMF_CHANNELS]; 58 FLOAT32 (*ptr_temp_im)[MAX_NUM_QMF_CHANNELS]; 59 } ia_hybrid_flt_struct; 60 61 VOID ixheaacd_hybrid_analysis(const WORD32 *ptr_qmf_real, WORD32 *ptr_hyb_real, 62 WORD32 *ptr_hyb_imag, 63 ia_hybrid_struct *ptr_hybrid, WORD16 scale, 64 ia_sbr_tables_struct *sbr_tables_ptr); 65 66 #endif /* IXHEAACD_HYBRID_H */ 67