FreeCalypso > hg > gsm-codec-lib
changeset 394:2af94ba0c075
libtwamr: integrate syn_filt.c
| author | Mychaela Falconia <falcon@freecalypso.org> |
|---|---|
| date | Mon, 06 May 2024 18:49:17 +0000 |
| parents | a2351f2ad4f8 |
| children | 8c7d5eec544c |
| files | libtwamr/Makefile libtwamr/namespace.list libtwamr/syn_filt.c libtwamr/syn_filt.h |
| diffstat | 4 files changed, 153 insertions(+), 2 deletions(-) [+] |
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--- a/libtwamr/Makefile Mon May 06 18:44:13 2024 +0000 +++ b/libtwamr/Makefile Mon May 06 18:49:17 2024 +0000 @@ -13,7 +13,7 @@ post_pro.o pow2.o prmno.o q_gain_c.o q_gain_p.o q_plsf.o q_plsf3_tab.o \ q_plsf5_tab.o q_plsf_3.o q_plsf_5.o qgain475.o qgain795.o qua_gain.o \ qua_gain_tab.o reorder.o residu.o s10_8pf.o set_sign.o sqrt_l.o \ - tls_flags.o window.o + syn_filt.o tls_flags.o window.o HDRS= namespace.h LIB= libtwamr.a
--- a/libtwamr/namespace.list Mon May 06 18:44:13 2024 +0000 +++ b/libtwamr/namespace.list Mon May 06 18:49:17 2024 +0000 @@ -29,7 +29,8 @@ Lsf_lsp Lsp_lsf Reorder_lsf Lsf_wt Lsp_Az Pitch_fr Pitch_fr_reset Post_Process Post_Process_reset -Q_plsf_reset Q_plsf_3 Q_plsf_5 Qua_gain Residu +Q_plsf_reset Q_plsf_3 Q_plsf_5 Qua_gain +Residu Syn_filt agc agc2 agc_reset pseudonoise build_CN_code build_CN_param
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/libtwamr/syn_filt.c Mon May 06 18:49:17 2024 +0000 @@ -0,0 +1,103 @@ +/* +******************************************************************************** +* +* 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 : syn_filt.c +* Purpose : Perform synthesis filtering through 1/A(z). +* +******************************************************************************** +*/ +/* +******************************************************************************** +* MODULE INCLUDE FILE AND VERSION ID +******************************************************************************** +*/ +#include "namespace.h" +#include "syn_filt.h" + +/* +******************************************************************************** +* INCLUDE FILES +******************************************************************************** +*/ +#include "typedef.h" +#include "basic_op.h" +#include "no_count.h" +#include "cnst.h" + +/* +******************************************************************************** +* LOCAL VARIABLES AND TABLES +******************************************************************************** +*/ +/* +*--------------------------------------* +* Constants (defined in cnst.h * +*--------------------------------------* +* M : LPC order * +*--------------------------------------* +*/ + +/* +******************************************************************************** +* PUBLIC PROGRAM CODE +******************************************************************************** +*/ +void Syn_filt ( + Word16 a[], /* (i) : a[M+1] prediction coefficients (M=10) */ + Word16 x[], /* (i) : input signal */ + Word16 y[], /* (o) : output signal */ + Word16 lg, /* (i) : size of filtering */ + Word16 mem[], /* (i/o) : memory associated with this filtering. */ + Word16 update /* (i) : 0=no update, 1=update of memory. */ +) +{ + Word16 i, j; + Word32 s; + Word16 tmp[80]; /* This is usually done by memory allocation (lg+M) */ + Word16 *yy; + + /* Copy mem[] to yy[] */ + + yy = tmp; move16 (); + + for (i = 0; i < M; i++) + { + *yy++ = mem[i]; move16 (); + } + + /* Do the filtering. */ + + for (i = 0; i < lg; i++) + { + s = L_mult (x[i], a[0]); + for (j = 1; j <= M; j++) + { + s = L_msu (s, a[j], yy[-j]); + } + s = L_shl (s, 3); + *yy++ = round (s); move16 (); + } + + for (i = 0; i < lg; i++) + { + y[i] = tmp[i + M]; move16 (); + } + + /* Update of memory if update==1 */ + + test (); + if (update != 0) + { + for (i = 0; i < M; i++) + { + mem[i] = y[lg - M + i]; move16 (); + } + } + return; +}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/libtwamr/syn_filt.h Mon May 06 18:49:17 2024 +0000 @@ -0,0 +1,47 @@ +/* +******************************************************************************** +* +* 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 : syn_filt.h +* Purpose : Perform synthesis filtering through 1/A(z). +* +* +******************************************************************************** +*/ +#ifndef syn_filt_h +#define syn_filt_h "$Id $" + +/* +******************************************************************************** +* INCLUDE FILES +******************************************************************************** +*/ +#include "typedef.h" + +/* +******************************************************************************** +* DEFINITION OF DATA TYPES +******************************************************************************** +*/ + +/* +******************************************************************************** +* DECLARATION OF PROTOTYPES +******************************************************************************** +*/ + +void Syn_filt ( + Word16 a[], /* (i) : a[m+1] prediction coefficients (m=10) */ + Word16 x[], /* (i) : input signal */ + Word16 y[], /* (o) : output signal */ + Word16 lg, /* (i) : size of filtering */ + Word16 mem[], /* (i/o): memory associated with this filtering. */ + Word16 update /* (i) : 0=no update, 1=update of memory. */ +); + +#endif