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/**
* Copyright (C) 2022 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "AptxParameters.h"
#include "SubbandFunctions.h"
#include "SubbandFunctionsCommon.h"
/* This function carries out all subband processing (common to both encode and
* decode). */
void processSubband(const int32_t qCode, const int32_t ditherVal,
Subband_data* SubbandDataPt, IQuantiser_data* iqDataPt) {
/* Inverse quantisation */
invertQuantisation(qCode, ditherVal, iqDataPt);
/* Predictor pole coefficient update */
updatePredictorPoleCoefficients(iqDataPt->invQ,
SubbandDataPt->m_predData.m_zeroVal,
&SubbandDataPt->m_PoleCoeffData);
/* Predictor filtering */
performPredictionFiltering(iqDataPt->invQ, SubbandDataPt);
}
/* processSubbandLL is used for the LL subband only. */
void processSubbandLL(const int32_t qCode, const int32_t ditherVal,
Subband_data* SubbandDataPt, IQuantiser_data* iqDataPt) {
/* Inverse quantisation */
invertQuantisation(qCode, ditherVal, iqDataPt);
/* Predictor pole coefficient update */
updatePredictorPoleCoefficients(iqDataPt->invQ,
SubbandDataPt->m_predData.m_zeroVal,
&SubbandDataPt->m_PoleCoeffData);
/* Predictor filtering */
performPredictionFilteringLL(iqDataPt->invQ, SubbandDataPt);
}
/* processSubbandHL is used for the HL subband only. */
void processSubbandHL(const int32_t qCode, const int32_t ditherVal,
Subband_data* SubbandDataPt, IQuantiser_data* iqDataPt) {
/* Inverse quantisation */
invertQuantisationHL(qCode, ditherVal, iqDataPt);
/* Predictor pole coefficient update */
updatePredictorPoleCoefficients(iqDataPt->invQ,
SubbandDataPt->m_predData.m_zeroVal,
&SubbandDataPt->m_PoleCoeffData);
/* Predictor filtering */
performPredictionFilteringHL(iqDataPt->invQ, SubbandDataPt);
}
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