1/* 2 * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11/* 12 * spectrum_ar_model_tables.h 13 * 14 * This file contains definitions of tables with AR coefficients, 15 * Gain coefficients and cosine tables. 16 * 17 */ 18 19#ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_SPECTRUM_AR_MODEL_TABLES_H_ 20#define WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_SPECTRUM_AR_MODEL_TABLES_H_ 21 22#include "structs.h" 23 24#define NUM_AR_RC_QUANT_BAUNDARY 12 25 26/********************* AR Coefficient Tables ************************/ 27/* cdf for quantized reflection coefficient 1 */ 28extern const uint16_t WebRtcIsac_kQArRc1Cdf[NUM_AR_RC_QUANT_BAUNDARY]; 29 30/* cdf for quantized reflection coefficient 2 */ 31extern const uint16_t WebRtcIsac_kQArRc2Cdf[NUM_AR_RC_QUANT_BAUNDARY]; 32 33/* cdf for quantized reflection coefficient 3 */ 34extern const uint16_t WebRtcIsac_kQArRc3Cdf[NUM_AR_RC_QUANT_BAUNDARY]; 35 36/* cdf for quantized reflection coefficient 4 */ 37extern const uint16_t WebRtcIsac_kQArRc4Cdf[NUM_AR_RC_QUANT_BAUNDARY]; 38 39/* cdf for quantized reflection coefficient 5 */ 40extern const uint16_t WebRtcIsac_kQArRc5Cdf[NUM_AR_RC_QUANT_BAUNDARY]; 41 42/* cdf for quantized reflection coefficient 6 */ 43extern const uint16_t WebRtcIsac_kQArRc6Cdf[NUM_AR_RC_QUANT_BAUNDARY]; 44 45/* quantization boundary levels for reflection coefficients */ 46extern const int16_t WebRtcIsac_kQArBoundaryLevels[NUM_AR_RC_QUANT_BAUNDARY]; 47 48/* initial indices for AR reflection coefficient quantizer and cdf table search */ 49extern const uint16_t WebRtcIsac_kQArRcInitIndex[AR_ORDER]; 50 51/* pointers to AR cdf tables */ 52extern const uint16_t *WebRtcIsac_kQArRcCdfPtr[AR_ORDER]; 53 54/* pointers to AR representation levels tables */ 55extern const int16_t *WebRtcIsac_kQArRcLevelsPtr[AR_ORDER]; 56 57 58/******************** GAIN Coefficient Tables ***********************/ 59/* cdf for Gain coefficient */ 60extern const uint16_t WebRtcIsac_kQGainCdf[19]; 61 62/* representation levels for quantized Gain coefficient */ 63extern const int32_t WebRtcIsac_kQGain2Levels[18]; 64 65/* squared quantization boundary levels for Gain coefficient */ 66extern const int32_t WebRtcIsac_kQGain2BoundaryLevels[19]; 67 68/* pointer to Gain cdf table */ 69extern const uint16_t *WebRtcIsac_kQGainCdf_ptr[1]; 70 71/* Gain initial index for gain quantizer and cdf table search */ 72extern const uint16_t WebRtcIsac_kQGainInitIndex[1]; 73 74/************************* Cosine Tables ****************************/ 75/* Cosine table */ 76extern const int16_t WebRtcIsac_kCos[6][60]; 77 78#endif /* WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_SPECTRUM_AR_MODEL_TABLES_H_ */ 79