FreeCalypso > hg > gsm-codec-lib
diff libtwamr/pre_proc.h @ 397:9b699f30e6f3
libtwamr: integrate pre_proc.c
| author | Mychaela Falconia <falcon@freecalypso.org> |
|---|---|
| date | Mon, 06 May 2024 19:02:44 +0000 |
| parents | |
| children |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/libtwamr/pre_proc.h Mon May 06 19:02:44 2024 +0000 @@ -0,0 +1,62 @@ +/* +******************************************************************************** +* +* 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 : pre_proc.h +* Purpose : Preprocessing of input speech. +* +******************************************************************************** +*/ +#ifndef pre_proc_h +#define pre_proc_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; +} Pre_ProcessState; + +/* +******************************************************************************** +* DECLARATION OF PROTOTYPES +******************************************************************************** +*/ + +void Pre_Process_reset (Pre_ProcessState *st); +/* reset of pre processing state (i.e. set state memory to zero) + returns 0 on success + */ + +int Pre_Process ( + Pre_ProcessState *st, + Word16 signal[], /* Input/output signal */ + Word16 lg /* Lenght of signal */ +); + +#endif