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