FreeCalypso > hg > gsm-codec-lib
diff libtwamr/ton_stab.h @ 405:8fff74ca83e8
libtwamr: integrate ton_stab.c
| author | Mychaela Falconia <falcon@freecalypso.org> |
|---|---|
| date | Mon, 06 May 2024 23:23:40 +0000 |
| parents | |
| children |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/libtwamr/ton_stab.h Mon May 06 23:23:40 2024 +0000 @@ -0,0 +1,73 @@ +/* +******************************************************************************** +* +* 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 : ton_stab.h +* Purpose : Tone stabilization routines +* +******************************************************************************** +*/ +#ifndef ton_stab_h +#define ton_stab_h "$Id $" + +/* +******************************************************************************** +* INCLUDE FILES +******************************************************************************** +*/ +#include "tw_amr.h" +#include "typedef.h" +#include "cnst.h" + +/* +******************************************************************************** +* LOCAL VARIABLES AND TABLES +******************************************************************************** +*/ + +/* +******************************************************************************** +* DEFINITION OF DATA TYPES +******************************************************************************** +*/ + +/* state variable */ +typedef struct { + + /* counters */ + Word16 count; + + /* gain history Q11 */ + Word16 gp[N_FRAME]; + +} tonStabState; + +/* +******************************************************************************** +* DECLARATION OF PROTOTYPES +******************************************************************************** +*/ + +void ton_stab_reset (tonStabState *st); +/* reset of pre processing state (i.e. set state memory to zero) + returns 0 on success + */ + +Word16 check_lsp(tonStabState *st, /* i/o : State struct */ + Word16 *lsp /* i : unquantized LSP's */ +); + +Word16 check_gp_clipping(tonStabState *st, /* i/o : State struct */ + Word16 g_pitch /* i : pitch gain */ +); + +void update_gp_clipping(tonStabState *st, /* i/o : State struct */ + Word16 g_pitch /* i : pitch gain */ +); + +#endif