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 * lpc_tables.h 13 * 14 * header file for coding tables for the LPC coefficients 15 * 16 */ 17 18 #ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_FIX_SOURCE_LPC_TABLES_H_ 19 #define WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_FIX_SOURCE_LPC_TABLES_H_ 20 21 #include "webrtc/typedefs.h" 22 23 /* indices of KLT coefficients used */ 24 extern const uint16_t WebRtcIsacfix_kSelIndGain[12]; 25 26 extern const uint16_t WebRtcIsacfix_kSelIndShape[108]; 27 28 /* cdf array for model indicator */ 29 extern const uint16_t WebRtcIsacfix_kModelCdf[KLT_NUM_MODELS+1]; 30 31 /* pointer to cdf array for model indicator */ 32 extern const uint16_t *WebRtcIsacfix_kModelCdfPtr[1]; 33 34 /* initial cdf index for decoder of model indicator */ 35 extern const uint16_t WebRtcIsacfix_kModelInitIndex[1]; 36 37 /* offset to go from rounded value to quantization index */ 38 extern const int16_t WebRtcIsacfix_kQuantMinGain[12]; 39 40 extern const int16_t WebRtcIsacfix_kQuantMinShape[108]; 41 42 /* maximum quantization index */ 43 extern const uint16_t WebRtcIsacfix_kMaxIndGain[12]; 44 45 extern const uint16_t WebRtcIsacfix_kMaxIndShape[108]; 46 47 /* index offset */ 48 extern const uint16_t WebRtcIsacfix_kOffsetGain[KLT_NUM_MODELS][12]; 49 50 extern const uint16_t WebRtcIsacfix_kOffsetShape[KLT_NUM_MODELS][108]; 51 52 /* initial cdf index for KLT coefficients */ 53 extern const uint16_t WebRtcIsacfix_kInitIndexGain[KLT_NUM_MODELS][12]; 54 55 extern const uint16_t WebRtcIsacfix_kInitIndexShape[KLT_NUM_MODELS][108]; 56 57 /* offsets for quantizer representation levels */ 58 extern const uint16_t WebRtcIsacfix_kOfLevelsGain[3]; 59 60 extern const uint16_t WebRtcIsacfix_kOfLevelsShape[3]; 61 62 /* quantizer representation levels */ 63 extern const int32_t WebRtcIsacfix_kLevelsGainQ17[1176]; 64 65 extern const int16_t WebRtcIsacfix_kLevelsShapeQ10[1735]; 66 67 /* cdf tables for quantizer indices */ 68 extern const uint16_t WebRtcIsacfix_kCdfGain[1212]; 69 70 extern const uint16_t WebRtcIsacfix_kCdfShape[2059]; 71 72 /* pointers to cdf tables for quantizer indices */ 73 extern const uint16_t *WebRtcIsacfix_kCdfGainPtr[KLT_NUM_MODELS][12]; 74 75 extern const uint16_t *WebRtcIsacfix_kCdfShapePtr[KLT_NUM_MODELS][108]; 76 77 /* code length for all coefficients using different models */ 78 extern const int16_t WebRtcIsacfix_kCodeLenGainQ11[392]; 79 80 extern const int16_t WebRtcIsacfix_kCodeLenShapeQ11[577]; 81 82 /* left KLT transforms */ 83 extern const int16_t WebRtcIsacfix_kT1GainQ15[KLT_NUM_MODELS][4]; 84 85 extern const int16_t WebRtcIsacfix_kT1ShapeQ15[KLT_NUM_MODELS][324]; 86 87 /* right KLT transforms */ 88 extern const int16_t WebRtcIsacfix_kT2GainQ15[KLT_NUM_MODELS][36]; 89 90 extern const int16_t WebRtcIsacfix_kT2ShapeQ15[KLT_NUM_MODELS][36]; 91 92 /* means of log gains and LAR coefficients */ 93 extern const int16_t WebRtcIsacfix_kMeansGainQ8[KLT_NUM_MODELS][12]; 94 95 extern const int32_t WebRtcIsacfix_kMeansShapeQ17[3][108]; 96 97 #endif /* WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_FIX_SOURCE_LPC_TABLES_H_ */ 98