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Viewing changes to gr-vocoder/lib/codec2/codec2_internal.h

  • Committer: Package Import Robot
  • Author(s): A. Maitland Bottoms
  • Date: 2014-01-05 12:14:43 UTC
  • mfrom: (2.1.23 sid)
  • Revision ID: package-import@ubuntu.com-20140105121443-je18dkof6uhox808
Tags: 3.7.2.1-5
use correct compiler for unstable build

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gr-vocoder/lib/codec2/codec2_internal.h
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  FILE........: codec2_internal.h
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  AUTHOR......: David Rowe
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  DATE CREATED: April 16 2012
 
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  DATE CREATED: 22 March 2011
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  Header file for Codec2 internal states, exposed via this header
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  file to assist in testing.
 
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  Some internal structures and states broken out here as they are useful for
 
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  testing and development.
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\*---------------------------------------------------------------------------*/
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/*
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  Copyright (C) 2012 David Rowe
 
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  Copyright (C) 2011 David Rowe
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  All rights reserved.
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*/
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#ifndef __CODEC2_INTERNAL__
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#define __CODEC2_INTERNAL__
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struct CODEC2 {
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    int           mode;
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    kiss_fft_cfg  fft_fwd_cfg;             /* forward FFT config                        */
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    float         w[M];                    /* time domain hamming window                */
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    COMP          W[FFT_ENC];              /* DFT of w[]                                */
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    float         Pn[2*N];                 /* trapezoidal synthesis window              */
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    float         Sn[M];                   /* input speech                              */
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    float         hpf_states[2];           /* high pass filter states                   */
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    void         *nlp;                     /* pitch predictor states                    */
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    kiss_fft_cfg  fft_inv_cfg;             /* inverse FFT config                        */
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    float         Sn_[2*N];                /* synthesised output speech                 */
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    float         ex_phase;                /* excitation model phase track              */
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    float         bg_est;                  /* background noise estimate for post filter */
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    float         prev_Wo_enc;             /* previous frame's pitch estimate           */
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    MODEL         prev_model_dec;          /* previous frame's model parameters         */
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    float         prev_lsps_dec[LPC_ORD];  /* previous frame's LSPs                     */
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    float         prev_e_dec;              /* previous frame's LPC energy               */
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    int           lpc_pf;                  /* LPC post filter on                        */
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    int           bass_boost;              /* LPC post filter bass boost                */
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    float         beta;                    /* LPC post filter parameters                */
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    float         gamma;
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    float         xq_enc[2];               /* joint pitch and energy VQ states          */
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    float         xq_dec[2];
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    int           smoothing;               /* enable smoothing for channels with errors */
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};
 
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#define  __CODEC2_INTERNAL__
 
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/*---------------------------------------------------------------------------*\
 
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                             STATES
 
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\*---------------------------------------------------------------------------*/
 
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typedef struct {
 
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    float  w[M];               /* time domain hamming window                */
 
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    COMP   W[FFT_ENC];         /* DFT of w[]                                */
 
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    float  Pn[2*N];            /* trapezoidal synthesis window              */
 
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    float  Sn[M];              /* input speech                              */
 
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    float  hpf_states[2];      /* high pass filter states                   */
 
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    void  *nlp;                /* pitch predictor states                    */
 
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    float  Sn_[2*N];           /* synthesised output speech                 */
 
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    float  ex_phase;           /* excitation model phase track              */
 
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    float  bg_est;             /* background noise estimate for post filter */
 
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    float  prev_Wo;            /* previous frame's pitch estimate           */
 
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    MODEL  prev_model;         /* previous frame's model parameters         */
 
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    float  prev_lsps[LPC_ORD]; /* previous frame's LSPs                     */
 
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    float  prev_energy;        /* previous frame's LPC energy               */
 
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} CODEC2;
 
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/*---------------------------------------------------------------------------*\
 
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                             FUNCTION HEADERS
 
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\*---------------------------------------------------------------------------*/
 
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void analyse_one_frame(CODEC2 *c2, MODEL *model, short speech[]);
 
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void synthesise_one_frame(CODEC2 *c2, short speech[], MODEL *model,float ak[]);
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#endif