mirror of
https://github.com/signalwire/freeswitch.git
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115 lines
4.0 KiB
C
115 lines
4.0 KiB
C
/*
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* Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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/*
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* pitch_lag_tables.h
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*
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* This file contains tables for the pitch filter side-info in the entropy coder.
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*
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*/
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#ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_PITCH_LAG_TABLES_H_
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#define WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_PITCH_LAG_TABLES_H_
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#include "typedefs.h"
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/* header file for coding tables for the pitch filter side-info in the entropy coder */
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/********************* Pitch Filter Lag Coefficient Tables ************************/
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/* tables for use with small pitch gain */
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/* cdfs for quantized pitch lags */
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extern const WebRtc_UWord16 WebRtcIsac_kQPitchLagCdf1Lo[127];
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extern const WebRtc_UWord16 WebRtcIsac_kQPitchLagCdf2Lo[20];
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extern const WebRtc_UWord16 WebRtcIsac_kQPitchLagCdf3Lo[2];
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extern const WebRtc_UWord16 WebRtcIsac_kQPitchLagCdf4Lo[10];
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extern const WebRtc_UWord16 *WebRtcIsac_kQPitchLagCdfPtrLo[4];
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/* size of first cdf table */
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extern const WebRtc_UWord16 WebRtcIsac_kQPitchLagCdfSizeLo[1];
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/* index limits and ranges */
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extern const WebRtc_Word16 WebRtcIsac_kQIndexLowerLimitLagLo[4];
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extern const WebRtc_Word16 WebRtcIsac_kQIndexUpperLimitLagLo[4];
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/* initial index for arithmetic decoder */
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extern const WebRtc_UWord16 WebRtcIsac_kQInitIndexLagLo[3];
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/* mean values of pitch filter lags */
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extern const double WebRtcIsac_kQMeanLag2Lo[19];
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extern const double WebRtcIsac_kQMeanLag3Lo[1];
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extern const double WebRtcIsac_kQMeanLag4Lo[9];
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extern const double WebRtcIsac_kQPitchLagStepsizeLo;
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/* tables for use with medium pitch gain */
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/* cdfs for quantized pitch lags */
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extern const WebRtc_UWord16 WebRtcIsac_kQPitchLagCdf1Mid[255];
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extern const WebRtc_UWord16 WebRtcIsac_kQPitchLagCdf2Mid[36];
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extern const WebRtc_UWord16 WebRtcIsac_kQPitchLagCdf3Mid[2];
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extern const WebRtc_UWord16 WebRtcIsac_kQPitchLagCdf4Mid[20];
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extern const WebRtc_UWord16 *WebRtcIsac_kQPitchLagCdfPtrMid[4];
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/* size of first cdf table */
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extern const WebRtc_UWord16 WebRtcIsac_kQPitchLagCdfSizeMid[1];
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/* index limits and ranges */
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extern const WebRtc_Word16 WebRtcIsac_kQIndexLowerLimitLagMid[4];
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extern const WebRtc_Word16 WebRtcIsac_kQIndexUpperLimitLagMid[4];
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/* initial index for arithmetic decoder */
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extern const WebRtc_UWord16 WebRtcIsac_kQInitIndexLagMid[3];
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/* mean values of pitch filter lags */
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extern const double WebRtcIsac_kQMeanLag2Mid[35];
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extern const double WebRtcIsac_kQMeanLag3Mid[1];
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extern const double WebRtcIsac_kQMeanLag4Mid[19];
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extern const double WebRtcIsac_kQPitchLagStepsizeMid;
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/* tables for use with large pitch gain */
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/* cdfs for quantized pitch lags */
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extern const WebRtc_UWord16 WebRtcIsac_kQPitchLagCdf1Hi[511];
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extern const WebRtc_UWord16 WebRtcIsac_kQPitchLagCdf2Hi[68];
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extern const WebRtc_UWord16 WebRtcIsac_kQPitchLagCdf3Hi[2];
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extern const WebRtc_UWord16 WebRtcIsac_kQPitchLagCdf4Hi[35];
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extern const WebRtc_UWord16 *WebRtcIsac_kQPitchLagCdfPtrHi[4];
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/* size of first cdf table */
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extern const WebRtc_UWord16 WebRtcIsac_kQPitchLagCdfSizeHi[1];
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/* index limits and ranges */
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extern const WebRtc_Word16 WebRtcIsac_kQindexLowerLimitLagHi[4];
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extern const WebRtc_Word16 WebRtcIsac_kQindexUpperLimitLagHi[4];
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/* initial index for arithmetic decoder */
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extern const WebRtc_UWord16 WebRtcIsac_kQInitIndexLagHi[3];
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/* mean values of pitch filter lags */
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extern const double WebRtcIsac_kQMeanLag2Hi[67];
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extern const double WebRtcIsac_kQMeanLag3Hi[1];
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extern const double WebRtcIsac_kQMeanLag4Hi[34];
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extern const double WebRtcIsac_kQPitchLagStepsizeHi;
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/* transform matrix */
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extern const double WebRtcIsac_kTransform[4][4];
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/* transpose transform matrix */
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extern const double WebRtcIsac_kTransformTranspose[4][4];
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#endif /* WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_PITCH_LAG_TABLES_H_ */
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