FreeCalypso > hg > gsm-codec-lib
diff libtwamr/dtx_enc.h @ 407:5a1d18542f8a
libtwamr: integrate dtx_dec.c and dtx_enc.c
| author | Mychaela Falconia <falcon@freecalypso.org> |
|---|---|
| date | Tue, 07 May 2024 00:05:12 +0000 |
| parents | |
| children |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/libtwamr/dtx_enc.h Tue May 07 00:05:12 2024 +0000 @@ -0,0 +1,110 @@ +/* +******************************************************************************** +* +* 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 : dtx_enc.h +* Purpose : DTX mode computation of SID parameters +* +******************************************************************************** +*/ +#ifndef dtx_enc_h +#define dtx_enc_h "$Id $" + +/* +******************************************************************************** +* INCLUDE FILES +******************************************************************************** +*/ +#include "tw_amr.h" +#include "typedef.h" +#include "cnst.h" +#include "q_plsf.h" +#include "gc_pred.h" +#include "dtx_common.h" + +/* +******************************************************************************** +* DEFINITION OF DATA TYPES +******************************************************************************** +*/ +typedef struct { + Word16 lsp_hist[M * DTX_HIST_SIZE]; + Word16 log_en_hist[DTX_HIST_SIZE]; + Word16 hist_ptr; + Word16 log_en_index; + Word16 init_lsf_vq_index; + Word16 lsp_index[3]; + + /* DTX handler stuff */ + Word16 dtxHangoverCount; + Word16 decAnaElapsedCount; + +} dtx_encState; +/* +******************************************************************************** +* DECLARATION OF PROTOTYPES +******************************************************************************** +*/ + +/* +************************************************************************** +* +* Function : dtx_enc_reset +* Purpose : Resets state memory +* Returns : 0 on success +* +************************************************************************** +*/ +void dtx_enc_reset (dtx_encState *st); + +/* +************************************************************************** +* +* Function : dtx_enc +* Purpose : +* Description : +* +************************************************************************** +*/ +int dtx_enc(dtx_encState *st, /* i/o : State struct */ + Word16 computeSidFlag, /* i : compute SID */ + Q_plsfState *qSt, /* i/o : Qunatizer state struct */ + gc_predState* predState, /* i/o : State struct */ + Word16 **anap /* o : analysis parameters */ + ); + +/* +************************************************************************** +* +* Function : dtx_buffer +* Purpose : handles the DTX buffer +* +************************************************************************** +*/ +int dtx_buffer(dtx_encState *st, /* i/o : State struct */ + Word16 lsp_new[], /* i : LSP vector */ + Word16 speech[] /* i : speech samples */ + ); + +/* +************************************************************************** +* +* Function : tx_dtx_handler +* Purpose : adds extra speech hangover to analyze speech on the decoding side. +* Description : returns 1 when a new SID analysis may be made +* otherwise it adds the appropriate hangover after a sequence +* with out updates of SID parameters . +* +************************************************************************** +*/ +Word16 tx_dtx_handler(dtx_encState *st, /* i/o : State struct */ + Word16 vadFlag, /* i : vad control variable */ + enum Mode *usedMode /* o : mode changed or not */ + ); + +#endif