FreeCalypso > hg > gsmhr-codec-ref

view vad.h @ 5:59fc7fc126d0

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
mv utils.c reid.c In the original GSM 06.06 code drop, reid.c resides in the "utilities" collection (Dir_UTIL.zip), but there is also a copy of reid.c named utils.c in the "C" collection (Dir_C.zip), even though it is never compiled or linked as such. When I originally created the present Hg repository, I did not intend to include REID, only the main body of the codec - but I overlooked that utils.c copy, so it got imported. In the present time, however, it has become useful to have REID code in Hg for easier public study and discussion - so let's have it under its proper name.
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 22 Jul 2024 18:43:12 +0000
parents 9008dbc8ca74
children
line wrap: on
line source

#ifndef __VAD
#define __VAD

#include "typedefs.h"


/*_________________________________________________________________________
 |                                                                         |
 |                            Function Prototypes                          |
 |_________________________________________________________________________|
*/

void   vad_reset(void);

void   vad_algorithm
       (
               Longword pL_acf[9],
               Shortword swScaleAcf,
               Shortword pswRc[4],
               Shortword swPtch,
               Shortword *pswVadFlag
);

void   energy_computation
       (
               Longword pL_acf[],
               Shortword swScaleAcf,
               Shortword pswRvad[],
               Shortword swNormRvad,
               Shortword *pswM_pvad,
               Shortword *pswE_pvad,
               Shortword *pswM_acf0,
               Shortword *pswE_acf0
);


void   average_acf
       (
               Longword pL_acf[],
               Shortword swScaleAcf,
               Longword pL_av0[],
               Longword pL_av1[]
);

void   predictor_values
       (
               Longword pL_av1[],
               Shortword pswRav1[],
               Shortword *pswNormRav1
);

void   schur_recursion
       (
               Longword pL_av1[],
               Shortword pswVpar[]
);

void   step_up
       (
               Shortword swNp,
               Shortword pswVpar[],
               Shortword pswAav1[]
);

void   compute_rav1
       (
               Shortword pswAav1[],
               Shortword pswRav1[],
               Shortword *pswNormRav1
);

void   spectral_comparison
       (
               Shortword pswRav1[],
               Shortword swNormRav1,
               Longword pL_av0[],
               Shortword *pswStat
);

void   tone_detection
       (
               Shortword pswRc[4],
               Shortword *pswTone
);


void   threshold_adaptation
       (
               Shortword swStat,
               Shortword swPtch,
               Shortword swTone,
               Shortword pswRav1[],
               Shortword swNormRav1,
               Shortword swM_pvad,
               Shortword swE_pvad,
               Shortword swM_acf0,
               Shortword swE_acf0,
               Shortword pswRvad[],
               Shortword *pswNormRvad,
               Shortword *pswM_thvad,
               Shortword *pswE_thvad
);

void   vad_decision
       (
               Shortword swM_pvad,
               Shortword swE_pvad,
               Shortword swM_thvad,
               Shortword swE_thvad,
               Shortword *pswVvad
);

void   vad_hangover
       (
               Shortword swVvad,
               Shortword *pswVadFlag
);

void   periodicity_update
       (
               Shortword pswLags[4],
               Shortword *pswPtch
);

#endif