115 lines
3.8 KiB
C
115 lines
3.8 KiB
C
/*
|
|
* Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
|
|
*
|
|
* Use of this source code is governed by a BSD-style license
|
|
* that can be found in the LICENSE file in the root of the source
|
|
* tree. An additional intellectual property rights grant can be found
|
|
* in the file PATENTS. All contributing project authors may
|
|
* be found in the AUTHORS file in the root of the source tree.
|
|
*/
|
|
|
|
/*
|
|
* lpc_tables.h
|
|
*
|
|
* header file for coding tables for the LPC coefficients
|
|
*
|
|
*/
|
|
|
|
#ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_LPC_TABLES_H_
|
|
#define WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_LPC_TABLES_H_
|
|
|
|
#include "structs.h"
|
|
|
|
#include "settings.h"
|
|
|
|
#define KLT_STEPSIZE 1.00000000
|
|
#define KLT_NUM_AVG_GAIN 0
|
|
#define KLT_NUM_AVG_SHAPE 0
|
|
#define KLT_NUM_MODELS 3
|
|
#define LPC_GAIN_SCALE 4.000f
|
|
#define LPC_LOBAND_SCALE 2.100f
|
|
#define LPC_LOBAND_ORDER ORDERLO
|
|
#define LPC_HIBAND_SCALE 0.450f
|
|
#define LPC_HIBAND_ORDER ORDERHI
|
|
#define LPC_GAIN_ORDER 2
|
|
|
|
#define LPC_SHAPE_ORDER (LPC_LOBAND_ORDER + LPC_HIBAND_ORDER)
|
|
|
|
#define KLT_ORDER_GAIN (LPC_GAIN_ORDER * SUBFRAMES)
|
|
#define KLT_ORDER_SHAPE (LPC_SHAPE_ORDER * SUBFRAMES)
|
|
/* indices of KLT coefficients used */
|
|
extern const WebRtc_UWord16 WebRtcIsac_kQKltSelIndGain[12];
|
|
|
|
extern const WebRtc_UWord16 WebRtcIsac_kQKltSelIndShape[108];
|
|
|
|
/* cdf array for model indicator */
|
|
extern const WebRtc_UWord16 WebRtcIsac_kQKltModelCdf[KLT_NUM_MODELS+1];
|
|
|
|
/* pointer to cdf array for model indicator */
|
|
extern const WebRtc_UWord16 *WebRtcIsac_kQKltModelCdfPtr[1];
|
|
|
|
/* initial cdf index for decoder of model indicator */
|
|
extern const WebRtc_UWord16 WebRtcIsac_kQKltModelInitIndex[1];
|
|
|
|
/* offset to go from rounded value to quantization index */
|
|
extern const short WebRtcIsac_kQKltQuantMinGain[12];
|
|
|
|
extern const short WebRtcIsac_kQKltQuantMinShape[108];
|
|
|
|
/* maximum quantization index */
|
|
extern const WebRtc_UWord16 WebRtcIsac_kQKltMaxIndGain[12];
|
|
|
|
extern const WebRtc_UWord16 WebRtcIsac_kQKltMaxIndShape[108];
|
|
|
|
/* index offset */
|
|
extern const WebRtc_UWord16 WebRtcIsac_kQKltOffsetGain[KLT_NUM_MODELS][12];
|
|
|
|
extern const WebRtc_UWord16 WebRtcIsac_kQKltOffsetShape[KLT_NUM_MODELS][108];
|
|
|
|
/* initial cdf index for KLT coefficients */
|
|
extern const WebRtc_UWord16 WebRtcIsac_kQKltInitIndexGain[KLT_NUM_MODELS][12];
|
|
|
|
extern const WebRtc_UWord16 WebRtcIsac_kQKltInitIndexShape[KLT_NUM_MODELS][108];
|
|
|
|
/* offsets for quantizer representation levels */
|
|
extern const WebRtc_UWord16 WebRtcIsac_kQKltOfLevelsGain[3];
|
|
|
|
extern const WebRtc_UWord16 WebRtcIsac_kQKltOfLevelsShape[3];
|
|
|
|
/* quantizer representation levels */
|
|
extern const double WebRtcIsac_kQKltLevelsGain[1176];
|
|
|
|
extern const double WebRtcIsac_kQKltLevelsShape[1735];
|
|
|
|
/* cdf tables for quantizer indices */
|
|
extern const WebRtc_UWord16 WebRtcIsac_kQKltCdfGain[1212];
|
|
|
|
extern const WebRtc_UWord16 WebRtcIsac_kQKltCdfShape[2059];
|
|
|
|
/* pointers to cdf tables for quantizer indices */
|
|
extern const WebRtc_UWord16 *WebRtcIsac_kQKltCdfPtrGain[KLT_NUM_MODELS][12];
|
|
|
|
extern const WebRtc_UWord16 *WebRtcIsac_kQKltCdfPtrShape[KLT_NUM_MODELS][108];
|
|
|
|
/* code length for all coefficients using different models */
|
|
extern const double WebRtcIsac_kQKltCodeLenGain[392];
|
|
|
|
extern const double WebRtcIsac_kQKltCodeLenShape[578];
|
|
|
|
/* left KLT transforms */
|
|
extern const double WebRtcIsac_kKltT1Gain[KLT_NUM_MODELS][4];
|
|
|
|
extern const double WebRtcIsac_kKltT1Shape[KLT_NUM_MODELS][324];
|
|
|
|
/* right KLT transforms */
|
|
extern const double WebRtcIsac_kKltT2Gain[KLT_NUM_MODELS][36];
|
|
|
|
extern const double WebRtcIsac_kKltT2Shape[KLT_NUM_MODELS][36];
|
|
|
|
/* means of log gains and LAR coefficients */
|
|
extern const double WebRtcIsac_kLpcMeansGain[KLT_NUM_MODELS][12];
|
|
|
|
extern const double WebRtcIsac_kLpcMeansShape[KLT_NUM_MODELS][108];
|
|
|
|
#endif /* WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_LPC_TABLES_H_ */
|