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06c2aa9f7b
WebRTC internal code should always use include paths that start from the root of the project and that clearly identify the header file. This allows 'gn check' to actually keep dependencies under control because 'gn check' cannot enforce anything if the include path is not fully qualified (starting from the root of the project). Bug: webrtc:8815 Change-Id: I36f01784fa5f5b77eefc02db479b1f7f6ee1a8c3 Reviewed-on: https://webrtc-review.googlesource.com/46263 Reviewed-by: Karl Wiberg <kwiberg@webrtc.org> Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org> Cr-Commit-Position: refs/heads/master@{#21871}
221 lines
5.8 KiB
C
221 lines
5.8 KiB
C
/*
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* Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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/******************************************************************
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iLBC Speech Coder ANSI-C Source Code
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define.h
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******************************************************************/
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#ifndef MODULES_AUDIO_CODING_CODECS_ILBC_MAIN_SOURCE_DEFINES_H_
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#define MODULES_AUDIO_CODING_CODECS_ILBC_MAIN_SOURCE_DEFINES_H_
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#include <string.h>
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#include "common_audio/signal_processing/include/signal_processing_library.h"
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#include "typedefs.h" // NOLINT(build/include)
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/* general codec settings */
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#define FS 8000
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#define BLOCKL_20MS 160
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#define BLOCKL_30MS 240
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#define BLOCKL_MAX 240
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#define NSUB_20MS 4
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#define NSUB_30MS 6
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#define NSUB_MAX 6
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#define NASUB_20MS 2
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#define NASUB_30MS 4
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#define NASUB_MAX 4
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#define SUBL 40
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#define STATE_LEN 80
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#define STATE_SHORT_LEN_30MS 58
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#define STATE_SHORT_LEN_20MS 57
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/* LPC settings */
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#define LPC_FILTERORDER 10
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#define LPC_LOOKBACK 60
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#define LPC_N_20MS 1
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#define LPC_N_30MS 2
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#define LPC_N_MAX 2
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#define LPC_ASYMDIFF 20
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#define LSF_NSPLIT 3
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#define LSF_NUMBER_OF_STEPS 4
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#define LPC_HALFORDER 5
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#define COS_GRID_POINTS 60
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/* cb settings */
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#define CB_NSTAGES 3
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#define CB_EXPAND 2
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#define CB_MEML 147
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#define CB_FILTERLEN (2*4)
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#define CB_HALFFILTERLEN 4
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#define CB_RESRANGE 34
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#define CB_MAXGAIN_FIXQ6 83 /* error = -0.24% */
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#define CB_MAXGAIN_FIXQ14 21299
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/* enhancer */
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#define ENH_BLOCKL 80 /* block length */
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#define ENH_BLOCKL_HALF (ENH_BLOCKL/2)
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#define ENH_HL 3 /* 2*ENH_HL+1 is number blocks
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in said second sequence */
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#define ENH_SLOP 2 /* max difference estimated and
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correct pitch period */
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#define ENH_PLOCSL 8 /* pitch-estimates and
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pitch-locations buffer length */
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#define ENH_OVERHANG 2
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#define ENH_UPS0 4 /* upsampling rate */
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#define ENH_FL0 3 /* 2*FLO+1 is the length of each filter */
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#define ENH_FLO_MULT2_PLUS1 7
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#define ENH_VECTL (ENH_BLOCKL+2*ENH_FL0)
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#define ENH_CORRDIM (2*ENH_SLOP+1)
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#define ENH_NBLOCKS (BLOCKL/ENH_BLOCKL)
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#define ENH_NBLOCKS_EXTRA 5
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#define ENH_NBLOCKS_TOT 8 /* ENH_NBLOCKS+ENH_NBLOCKS_EXTRA */
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#define ENH_BUFL (ENH_NBLOCKS_TOT)*ENH_BLOCKL
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#define ENH_BUFL_FILTEROVERHEAD 3
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#define ENH_A0 819 /* Q14 */
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#define ENH_A0_MINUS_A0A0DIV4 848256041 /* Q34 */
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#define ENH_A0DIV2 26843546 /* Q30 */
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/* PLC */
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/* Down sampling */
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#define FILTERORDER_DS_PLUS1 7
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#define DELAY_DS 3
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#define FACTOR_DS 2
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/* bit stream defs */
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#define NO_OF_BYTES_20MS 38
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#define NO_OF_BYTES_30MS 50
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#define NO_OF_WORDS_20MS 19
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#define NO_OF_WORDS_30MS 25
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#define STATE_BITS 3
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#define BYTE_LEN 8
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#define ULP_CLASSES 3
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/* help parameters */
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#define TWO_PI_FIX 25736 /* Q12 */
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/* Constants for codebook search and creation */
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#define ST_MEM_L_TBL 85
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#define MEM_LF_TBL 147
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/* Struct for the bits */
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typedef struct iLBC_bits_t_ {
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int16_t lsf[LSF_NSPLIT*LPC_N_MAX];
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int16_t cb_index[CB_NSTAGES*(NASUB_MAX+1)]; /* First CB_NSTAGES values contains extra CB index */
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int16_t gain_index[CB_NSTAGES*(NASUB_MAX+1)]; /* First CB_NSTAGES values contains extra CB gain */
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size_t idxForMax;
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int16_t state_first;
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int16_t idxVec[STATE_SHORT_LEN_30MS];
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int16_t firstbits;
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size_t startIdx;
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} iLBC_bits;
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/* type definition encoder instance */
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typedef struct IlbcEncoder_ {
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/* flag for frame size mode */
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int16_t mode;
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/* basic parameters for different frame sizes */
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size_t blockl;
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size_t nsub;
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int16_t nasub;
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size_t no_of_bytes, no_of_words;
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int16_t lpc_n;
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size_t state_short_len;
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/* analysis filter state */
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int16_t anaMem[LPC_FILTERORDER];
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/* Fix-point old lsf parameters for interpolation */
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int16_t lsfold[LPC_FILTERORDER];
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int16_t lsfdeqold[LPC_FILTERORDER];
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/* signal buffer for LP analysis */
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int16_t lpc_buffer[LPC_LOOKBACK + BLOCKL_MAX];
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/* state of input HP filter */
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int16_t hpimemx[2];
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int16_t hpimemy[4];
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#ifdef SPLIT_10MS
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int16_t weightdenumbuf[66];
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int16_t past_samples[160];
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uint16_t bytes[25];
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int16_t section;
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int16_t Nfor_flag;
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int16_t Nback_flag;
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int16_t start_pos;
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size_t diff;
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#endif
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} IlbcEncoder;
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/* type definition decoder instance */
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typedef struct IlbcDecoder_ {
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/* flag for frame size mode */
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int16_t mode;
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/* basic parameters for different frame sizes */
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size_t blockl;
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size_t nsub;
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int16_t nasub;
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size_t no_of_bytes, no_of_words;
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int16_t lpc_n;
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size_t state_short_len;
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/* synthesis filter state */
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int16_t syntMem[LPC_FILTERORDER];
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/* old LSF for interpolation */
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int16_t lsfdeqold[LPC_FILTERORDER];
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/* pitch lag estimated in enhancer and used in PLC */
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size_t last_lag;
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/* PLC state information */
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int consPLICount, prev_enh_pl;
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int16_t perSquare;
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int16_t prevScale, prevPLI;
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size_t prevLag;
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int16_t prevLpc[LPC_FILTERORDER+1];
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int16_t prevResidual[NSUB_MAX*SUBL];
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int16_t seed;
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/* previous synthesis filter parameters */
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int16_t old_syntdenum[(LPC_FILTERORDER + 1)*NSUB_MAX];
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/* state of output HP filter */
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int16_t hpimemx[2];
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int16_t hpimemy[4];
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/* enhancer state information */
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int use_enhancer;
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int16_t enh_buf[ENH_BUFL+ENH_BUFL_FILTEROVERHEAD];
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size_t enh_period[ENH_NBLOCKS_TOT];
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} IlbcDecoder;
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#endif
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