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 */ 28 extern const uint16_t WebRtcIsac_kQArRc1Cdf[NUM_AR_RC_QUANT_BAUNDARY]; 29 30 /* cdf for quantized reflection coefficient 2 */ 31 extern const uint16_t WebRtcIsac_kQArRc2Cdf[NUM_AR_RC_QUANT_BAUNDARY]; 32 33 /* cdf for quantized reflection coefficient 3 */ 34 extern const uint16_t WebRtcIsac_kQArRc3Cdf[NUM_AR_RC_QUANT_BAUNDARY]; 35 36 /* cdf for quantized reflection coefficient 4 */ 37 extern const uint16_t WebRtcIsac_kQArRc4Cdf[NUM_AR_RC_QUANT_BAUNDARY]; 38 39 /* cdf for quantized reflection coefficient 5 */ 40 extern const uint16_t WebRtcIsac_kQArRc5Cdf[NUM_AR_RC_QUANT_BAUNDARY]; 41 42 /* cdf for quantized reflection coefficient 6 */ 43 extern const uint16_t WebRtcIsac_kQArRc6Cdf[NUM_AR_RC_QUANT_BAUNDARY]; 44 45 /* quantization boundary levels for reflection coefficients */ 46 extern const int16_t WebRtcIsac_kQArBoundaryLevels[NUM_AR_RC_QUANT_BAUNDARY]; 47 48 /* initial indices for AR reflection coefficient quantizer and cdf table search */ 49 extern const uint16_t WebRtcIsac_kQArRcInitIndex[AR_ORDER]; 50 51 /* pointers to AR cdf tables */ 52 extern const uint16_t *WebRtcIsac_kQArRcCdfPtr[AR_ORDER]; 53 54 /* pointers to AR representation levels tables */ 55 extern const int16_t *WebRtcIsac_kQArRcLevelsPtr[AR_ORDER]; 56 57 58 /******************** GAIN Coefficient Tables ***********************/ 59 /* cdf for Gain coefficient */ 60 extern const uint16_t WebRtcIsac_kQGainCdf[19]; 61 62 /* representation levels for quantized Gain coefficient */ 63 extern const int32_t WebRtcIsac_kQGain2Levels[18]; 64 65 /* squared quantization boundary levels for Gain coefficient */ 66 extern const int32_t WebRtcIsac_kQGain2BoundaryLevels[19]; 67 68 /* pointer to Gain cdf table */ 69 extern const uint16_t *WebRtcIsac_kQGainCdf_ptr[1]; 70 71 /* Gain initial index for gain quantizer and cdf table search */ 72 extern const uint16_t WebRtcIsac_kQGainInitIndex[1]; 73 74 /************************* Cosine Tables ****************************/ 75 /* Cosine table */ 76 extern const int16_t WebRtcIsac_kCos[6][60]; 77 78 #endif /* WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_SPECTRUM_AR_MODEL_TABLES_H_ */ 79