FreeCalypso > hg > gsm-codec-lib
diff libtwamr/post_pro.h @ 392:a0f914a28371
libtwamr: integrate post_pro.c
| author | Mychaela Falconia <falcon@freecalypso.org> |
|---|---|
| date | Mon, 06 May 2024 18:37:52 +0000 |
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| children |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/libtwamr/post_pro.h Mon May 06 18:37:52 2024 +0000 @@ -0,0 +1,66 @@ +/* +******************************************************************************** +* +* GSM AMR-NB speech codec R98 Version 7.6.0 December 12, 2001 +* R99 Version 3.3.0 +* REL-4 Version 4.1.0 +* +******************************************************************************** +* +* File : post_pro.h +* Purpose : Postprocessing of output speech. +* +* - 2nd order high pass filtering with cut +* off frequency at 60 Hz. +* - Multiplication of output by two. +* +******************************************************************************** +*/ +#ifndef post_pro_h +#define post_pro_h "$Id $" + +/* +******************************************************************************** +* INCLUDE FILES +******************************************************************************** +*/ +#include "typedef.h" + +/* +******************************************************************************** +* LOCAL VARIABLES AND TABLES +******************************************************************************** +*/ + +/* +******************************************************************************** +* DEFINITION OF DATA TYPES +******************************************************************************** +*/ +typedef struct { + Word16 y2_hi; + Word16 y2_lo; + Word16 y1_hi; + Word16 y1_lo; + Word16 x0; + Word16 x1; +} Post_ProcessState; + +/* +******************************************************************************** +* DECLARATION OF PROTOTYPES +******************************************************************************** +*/ + +void Post_Process_reset (Post_ProcessState *st); +/* reset of Post processing state (i.e. set state memory to zero) + returns 0 on success + */ + +int Post_Process ( + Post_ProcessState *st, /* i/o : post process state */ + Word16 signal[], /* i/o : signal */ + Word16 lg /* i : lenght of signal */ + ); + +#endif