FreeCalypso > hg > gsm-codec-lib
changeset 332:2303ba1490dd
libtwamr: integrate d2_9pf.c
| author | Mychaela Falconia <falcon@freecalypso.org> |
|---|---|
| date | Thu, 18 Apr 2024 22:18:45 +0000 |
| parents | c75327562b5e |
| children | f4a5545ea8b2 |
| files | libtwamr/Makefile libtwamr/d2_9pf.c libtwamr/d2_9pf.h libtwamr/namespace.h |
| diffstat | 4 files changed, 163 insertions(+), 2 deletions(-) [+] |
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--- a/libtwamr/Makefile Thu Apr 18 22:14:40 2024 +0000 +++ b/libtwamr/Makefile Thu Apr 18 22:18:45 2024 +0000 @@ -3,8 +3,8 @@ OBJS= a_refl.o agc.o autocorr.o az_lsp.o b_cn_cod.o basicop2.o bgnscd.o \ bitno.o bits2prm.o c1035pf.o c2_11pf.o c2_9pf.o c3_14pf.o c4_17pf.o \ c8_31pf.o c_g_aver.o calc_cor.o calc_en.o cbsearch.o convolve.o cor_h.o\ - d1035pf.o d2_11pf.o gmed_n.o graytab.o inv_sqrt.o log2.o oper_32b.o \ - prmno.o s10_8pf.o set_sign.o sqrt_l.o tls_flags.o window.o + d1035pf.o d2_11pf.o d2_9pf.o gmed_n.o graytab.o inv_sqrt.o log2.o \ + oper_32b.o prmno.o s10_8pf.o set_sign.o sqrt_l.o tls_flags.o window.o LIB= libtwamr.a INSTALL_PREFIX= /usr/local
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/libtwamr/d2_9pf.c Thu Apr 18 22:18:45 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 : d2_9pf.c +* Purpose : Algebraic codebook decoder +* +***************************************************************************** +*/ + +/* +***************************************************************************** +* MODULE INCLUDE FILE AND VERSION ID +***************************************************************************** +*/ +#include "namespace.h" +#include "d2_9pf.h" + +/* +***************************************************************************** +* INCLUDE FILES +***************************************************************************** +*/ +#include "typedef.h" +#include "basic_op.h" +#include "no_count.h" +#include "cnst.h" + +/* +******************************************************************************** +* LOCAL VARIABLES AND TABLES +******************************************************************************** +*/ +#define NB_PULSE 2 /* number of pulses */ + +#include "c2_9pf.tab" + +/* +******************************************************************************** +* PUBLIC PROGRAM CODE +******************************************************************************** +*/ +/************************************************************************* + * + * FUNCTION: decode_2i40_9bits (decod_ACELP()) + * + * PURPOSE: Algebraic codebook decoder. For details about the encoding se + * c2_9pf.c + * + *************************************************************************/ + +void decode_2i40_9bits( + Word16 subNr, /* i : subframe number */ + Word16 sign, /* i : signs of 2 pulses. */ + Word16 index, /* i : Positions of the 2 pulses. */ + Word16 cod[] /* o : algebraic (fixed) codebook excitation */ +) +{ + Word16 i, j, k; + Word16 pos[NB_PULSE]; + + /* Decode the positions */ + /* table bit is the MSB */ + j = shr((index & 64),6); logic16 (); + + i = index & 7; logic16 (); + + i = add(i, shl(i, 2)); /* pos0 =i*5+startPos[j*8+subNr*2] */ + k = startPos[add(shl(j, 3), shl(subNr, 1))]; + pos[0] = add(i, k); move16 (); + + index = shr(index, 3); + i = index & 7; logic16 (); + + i = add(i, shl(i, 2)); /* pos1 =i*5+startPos[j*8+subNr*2+1] */ + k = startPos[add(add(shl(j, 3), shl(subNr, 1)), 1)]; + pos[1] = add(i, k); move16 (); + + /* decode the signs and build the codeword */ + + for (i = 0; i < L_SUBFR; i++) { + cod[i] = 0; move16 (); + } + + for (j = 0; j < NB_PULSE; j++) { + i = sign & 1; logic16 (); + sign = shr(sign, 1); + + test (); + if (i != 0) { + cod[pos[j]] = 8191; move16 (); /* +1.0 */ + } else { + cod[pos[j]] = -8192; move16 (); /* -1.0 */ + } + } + + return; +}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/libtwamr/d2_9pf.h Thu Apr 18 22:18:45 2024 +0000 @@ -0,0 +1,57 @@ +/* +***************************************************************************** +* +* 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 : d2_9pf.h +* Purpose : Algebraic codebook decoder +* +***************************************************************************** +*/ +#ifndef d2_9pf_h +#define d2_9pf_h "$Id $" + +/* +***************************************************************************** +* INCLUDE FILES +***************************************************************************** +*/ +#include "typedef.h" + +/* +***************************************************************************** +* LOCAL VARIABLES AND TABLES +***************************************************************************** +*/ + +/* +***************************************************************************** +* DEFINITION OF DATA TYPES +***************************************************************************** +*/ + +/* +***************************************************************************** +* DECLARATION OF PROTOTYPES +***************************************************************************** +*/ +/************************************************************************* + * + * FUNCTION: decode_2i40_9bits (decod_ACELP()) + * + * PURPOSE: Algebraic codebook decoder for 2 pulses coded with 9 bits + * + *************************************************************************/ + +void decode_2i40_9bits( + Word16 subNr, /* i : subframe number */ + Word16 sign, /* i : signs of 2 pulses. */ + Word16 index, /* i : Positions of the 2 pulses. */ + Word16 cod[] /* o : algebraic (fixed) codebook excitation */ +); + +#endif
--- a/libtwamr/namespace.h Thu Apr 18 22:14:40 2024 +0000 +++ b/libtwamr/namespace.h Thu Apr 18 22:18:45 2024 +0000 @@ -108,6 +108,7 @@ #define code_10i40_35bits AMR__code_10i40_35bits #define search_10and8i40 AMR__search_10and8i40 +#define decode_2i40_9bits AMR__decode_2i40_9bits #define decode_2i40_11bits AMR__decode_2i40_11bits #define dec_10i40_35bits AMR__dec_10i40_35bits