53 lines
1.7 KiB
C
53 lines
1.7 KiB
C
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/******************************************************************************
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* *
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* Copyright (C) 2018 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*****************************************************************************
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* Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore
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*/
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#ifndef IXHEAACD_PNS_H
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#define IXHEAACD_PNS_H
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#define PNS_BAND_FLAGS_SIZE 16
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#define PNS_BAND_FLAGS_MASK \
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((WORD16)((((WORD16)1) << PNS_BAND_FLAGS_SHIFT) - 1))
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#define PNS_BAND_FLAGS_SHIFT 3
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#define PNS_SCALE_MANT_TAB_SIZE 4
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#define PNS_SCALE_MANT_TAB_MASK (PNS_SCALE_MANT_TAB_SIZE - 1)
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#define PNS_SCALE_MANT_TAB_SCALING -4
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#define PNS_SCALEFACTOR_SCALING 2
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#define PNS_SPEC_SCALE 3
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typedef struct {
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UWORD8 correlated[PNS_BAND_FLAGS_SIZE];
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WORD32 random_vector[PNS_BAND_FLAGS_SIZE * 8];
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} ia_pns_correlation_info_struct;
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typedef struct {
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WORD32 current_seed;
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WORD16 pns_frame_number;
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} ia_pns_rand_vec_struct;
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typedef struct {
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UWORD8 pns_used[PNS_BAND_FLAGS_SIZE * 8];
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WORD16 noise_energy;
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UWORD16 pns_active;
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} ia_pns_info_struct;
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#endif /* #ifndef IXHEAACD_PNS_H */
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