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_PNS_H 21 #define IXHEAACD_PNS_H 22 23 #define PNS_BAND_FLAGS_SIZE 16 24 #define PNS_BAND_FLAGS_MASK \ 25 ((WORD16)((((WORD16)1) << PNS_BAND_FLAGS_SHIFT) - 1)) 26 #define PNS_BAND_FLAGS_SHIFT 3 27 28 #define PNS_SCALE_MANT_TAB_SIZE 4 29 #define PNS_SCALE_MANT_TAB_MASK (PNS_SCALE_MANT_TAB_SIZE - 1) 30 #define PNS_SCALE_MANT_TAB_SCALING -4 31 32 #define PNS_SCALEFACTOR_SCALING 2 33 34 #define PNS_SPEC_SCALE 3 35 36 typedef struct { 37 UWORD8 correlated[PNS_BAND_FLAGS_SIZE]; 38 WORD32 random_vector[PNS_BAND_FLAGS_SIZE * 8]; 39 } ia_pns_correlation_info_struct; 40 41 typedef struct { 42 WORD32 current_seed; 43 WORD16 pns_frame_number; 44 } ia_pns_rand_vec_struct; 45 46 typedef struct { 47 UWORD8 pns_used[PNS_BAND_FLAGS_SIZE * 8]; 48 WORD16 noise_energy; 49 UWORD16 pns_active; 50 } ia_pns_info_struct; 51 52 #endif /* #ifndef IXHEAACD_PNS_H */ 53