309 lines
8.2 KiB
C
309 lines
8.2 KiB
C
|
/*
|
||
|
|
* Copyright 1992 by Jutta Degener and Carsten Bormann, Technische
|
||
|
|
* Universitaet Berlin. See the accompanying file "COPYRIGHT" for
|
||
|
|
* details. THERE IS ABSOLUTELY NO WARRANTY FOR THIS SOFTWARE.
|
||
|
|
*/
|
||
|
|
|
||
|
|
/*$Header$*/
|
||
|
|
|
||
|
|
#ifndef PRIVATE_H
|
||
|
|
#define PRIVATE_H
|
||
|
|
|
||
|
|
typedef short word; /* 16 bit signed int */
|
||
|
|
typedef long longword; /* 32 bit signed int */
|
||
|
|
|
||
|
|
typedef unsigned short uword; /* unsigned word */
|
||
|
|
typedef unsigned long ulongword; /* unsigned longword */
|
||
|
|
|
||
|
|
struct gsm_state {
|
||
|
|
|
||
|
|
word dp0[ 280 ];
|
||
|
|
|
||
|
|
word z1; /* preprocessing.c, Offset_com. */
|
||
|
|
longword L_z2; /* Offset_com. */
|
||
|
|
int mp; /* Preemphasis */
|
||
|
|
|
||
|
|
word u[8]; /* short_term_aly_filter.c */
|
||
|
|
word LARpp[2][8]; /* */
|
||
|
|
word j; /* */
|
||
|
|
|
||
|
|
word ltp_cut; /* long_term.c, LTP crosscorr. */
|
||
|
|
word nrp; /* 40 */ /* long_term.c, synthesis */
|
||
|
|
word v[9]; /* short_term.c, synthesis */
|
||
|
|
word msr; /* decoder.c, Postprocessing */
|
||
|
|
|
||
|
|
char verbose; /* only used if !NDEBUG */
|
||
|
|
char fast; /* only used if FAST */
|
||
|
|
|
||
|
|
char wav_fmt; /* only used if WAV49 defined */
|
||
|
|
unsigned char frame_index; /* odd/even chaining */
|
||
|
|
unsigned char frame_chain; /* half-byte to carry forward */
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
#define MIN_WORD (-32767 - 1)
|
||
|
|
#define MAX_WORD 32767
|
||
|
|
|
||
|
|
#define MIN_LONGWORD (-2147483647 - 1)
|
||
|
|
#define MAX_LONGWORD 2147483647
|
||
|
|
|
||
|
|
#ifdef SASR /* flag: >> is a signed arithmetic shift right */
|
||
|
|
#undef SASR
|
||
|
|
#define SASR(x, by) ((x) >> (by))
|
||
|
|
#else
|
||
|
|
#define SASR(x, by) ((x) >= 0 ? (x) >> (by) : (~(-((x) + 1) >> (by))))
|
||
|
|
#endif /* SASR */
|
||
|
|
|
||
|
|
#include "proto.h"
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Prototypes from add.c
|
||
|
|
*/
|
||
|
|
extern word gsm_mult P((word a, word b));
|
||
|
|
extern longword gsm_L_mult P((word a, word b));
|
||
|
|
extern word gsm_mult_r P((word a, word b));
|
||
|
|
|
||
|
|
extern word gsm_div P((word num, word denum));
|
||
|
|
|
||
|
|
extern word gsm_add P(( word a, word b ));
|
||
|
|
extern longword gsm_L_add P(( longword a, longword b ));
|
||
|
|
|
||
|
|
extern word gsm_sub P((word a, word b));
|
||
|
|
extern longword gsm_L_sub P((longword a, longword b));
|
||
|
|
|
||
|
|
extern word gsm_abs P((word a));
|
||
|
|
|
||
|
|
extern word gsm_norm P(( longword a ));
|
||
|
|
|
||
|
|
extern longword gsm_L_asl P((longword a, int n));
|
||
|
|
extern word gsm_asl P((word a, int n));
|
||
|
|
|
||
|
|
extern longword gsm_L_asr P((longword a, int n));
|
||
|
|
extern word gsm_asr P((word a, int n));
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Inlined functions from add.h
|
||
|
|
*/
|
||
|
|
|
||
|
|
/*
|
||
|
|
* #define GSM_MULT_R(a, b) (* word a, word b, !(a == b == MIN_WORD) *) \
|
||
|
|
* (0x0FFFF & SASR(((longword)(a) * (longword)(b) + 16384), 15))
|
||
|
|
*/
|
||
|
|
#define GSM_MULT_R(a, b) /* word a, word b, !(a == b == MIN_WORD) */ \
|
||
|
|
(SASR( ((longword)(a) * (longword)(b) + 16384), 15 ))
|
||
|
|
|
||
|
|
# define GSM_MULT(a,b) /* word a, word b, !(a == b == MIN_WORD) */ \
|
||
|
|
(SASR( ((longword)(a) * (longword)(b)), 15 ))
|
||
|
|
|
||
|
|
# define GSM_L_MULT(a, b) /* word a, word b */ \
|
||
|
|
(((longword)(a) * (longword)(b)) << 1)
|
||
|
|
|
||
|
|
#if defined(__GNUC__) && defined(__i386__)
|
||
|
|
|
||
|
|
static __inline__ int GSM_L_ADD(int a, int b)
|
||
|
|
{
|
||
|
|
__asm__ __volatile__(
|
||
|
|
|
||
|
|
"addl %2,%0; jno 0f; movl $0x7fffffff,%0; adcl $0,%0; 0:"
|
||
|
|
: "=r" (a)
|
||
|
|
: "0" (a), "ir" (b)
|
||
|
|
: "cc"
|
||
|
|
);
|
||
|
|
return(a);
|
||
|
|
}
|
||
|
|
|
||
|
|
static __inline__ short GSM_ADD(short a, short b)
|
||
|
|
{
|
||
|
|
__asm__ __volatile__(
|
||
|
|
"addw %2,%0; jno 0f; movw $0x7fff,%0; adcw $0,%0; 0:"
|
||
|
|
: "=r" (a)
|
||
|
|
: "0" (a), "ir" (b)
|
||
|
|
: "cc"
|
||
|
|
);
|
||
|
|
return(a);
|
||
|
|
}
|
||
|
|
|
||
|
|
static __inline__ short GSM_SUB(short a, short b)
|
||
|
|
{
|
||
|
|
__asm__ __volatile__(
|
||
|
|
"subw %2,%0; jno 0f; movw $0x7fff,%0; adcw $0,%0; 0:"
|
||
|
|
: "=r" (a)
|
||
|
|
: "0" (a), "ir" (b)
|
||
|
|
: "cc"
|
||
|
|
);
|
||
|
|
return(a);
|
||
|
|
}
|
||
|
|
|
||
|
|
#else
|
||
|
|
|
||
|
|
# define GSM_L_ADD(a, b) \
|
||
|
|
( (a) < 0 ? ( (b) >= 0 ? (a) + (b) \
|
||
|
|
: (utmp = (ulongword)-((a) + 1) + (ulongword)-((b) + 1)) \
|
||
|
|
>= MAX_LONGWORD ? MIN_LONGWORD : -(longword)utmp-2 ) \
|
||
|
|
: ((b) <= 0 ? (a) + (b) \
|
||
|
|
: (utmp = (ulongword)(a) + (ulongword)(b)) >= MAX_LONGWORD \
|
||
|
|
? MAX_LONGWORD : utmp))
|
||
|
|
|
||
|
|
/*
|
||
|
|
* # define GSM_ADD(a, b) \
|
||
|
|
* ((ltmp = (longword)(a) + (longword)(b)) >= MAX_WORD \
|
||
|
|
* ? MAX_WORD : ltmp <= MIN_WORD ? MIN_WORD : ltmp)
|
||
|
|
*/
|
||
|
|
/* Nonportable, but faster: */
|
||
|
|
|
||
|
|
#define GSM_ADD(a, b) \
|
||
|
|
(short) ((ulongword)((ltmp = (longword)(a) + (longword)(b)) - MIN_WORD) > \
|
||
|
|
MAX_WORD - MIN_WORD ? (ltmp > 0 ? MAX_WORD : MIN_WORD) : ltmp)
|
||
|
|
|
||
|
|
# define GSM_SUB(a, b) \
|
||
|
|
((ltmp = (longword)(a) - (longword)(b)) >= MAX_WORD \
|
||
|
|
? MAX_WORD : ltmp <= MIN_WORD ? MIN_WORD : ltmp)
|
||
|
|
|
||
|
|
#endif
|
||
|
|
|
||
|
|
# define GSM_ABS(a) ((a) < 0 ? ((a) == MIN_WORD ? MAX_WORD : -(a)) : (a))
|
||
|
|
|
||
|
|
/* Use these if necessary:
|
||
|
|
|
||
|
|
# define GSM_MULT_R(a, b) gsm_mult_r(a, b)
|
||
|
|
# define GSM_MULT(a, b) gsm_mult(a, b)
|
||
|
|
# define GSM_L_MULT(a, b) gsm_L_mult(a, b)
|
||
|
|
|
||
|
|
# define GSM_L_ADD(a, b) gsm_L_add(a, b)
|
||
|
|
# define GSM_ADD(a, b) gsm_add(a, b)
|
||
|
|
# define GSM_SUB(a, b) gsm_sub(a, b)
|
||
|
|
|
||
|
|
# define GSM_ABS(a) gsm_abs(a)
|
||
|
|
|
||
|
|
*/
|
||
|
|
|
||
|
|
/*
|
||
|
|
* More prototypes from implementations..
|
||
|
|
*/
|
||
|
|
extern void Gsm_Coder P((
|
||
|
|
struct gsm_state * S,
|
||
|
|
word * s, /* [0..159] samples IN */
|
||
|
|
word * LARc, /* [0..7] LAR coefficients OUT */
|
||
|
|
word * Nc, /* [0..3] LTP lag OUT */
|
||
|
|
word * bc, /* [0..3] coded LTP gain OUT */
|
||
|
|
word * Mc, /* [0..3] RPE grid selection OUT */
|
||
|
|
word * xmaxc,/* [0..3] Coded maximum amplitude OUT */
|
||
|
|
word * xMc /* [13*4] normalized RPE samples OUT */));
|
||
|
|
|
||
|
|
extern void Gsm_Long_Term_Predictor P(( /* 4x for 160 samples */
|
||
|
|
struct gsm_state * S,
|
||
|
|
word * d, /* [0..39] residual signal IN */
|
||
|
|
word * dp, /* [-120..-1] d' IN */
|
||
|
|
word * e, /* [0..40] OUT */
|
||
|
|
word * dpp, /* [0..40] OUT */
|
||
|
|
word * Nc, /* correlation lag OUT */
|
||
|
|
word * bc /* gain factor OUT */));
|
||
|
|
|
||
|
|
extern void Gsm_LPC_Analysis P((
|
||
|
|
struct gsm_state * S,
|
||
|
|
word * s, /* 0..159 signals IN/OUT */
|
||
|
|
word * LARc)); /* 0..7 LARc's OUT */
|
||
|
|
|
||
|
|
extern void Gsm_Preprocess P((
|
||
|
|
struct gsm_state * S,
|
||
|
|
word * s, word * so));
|
||
|
|
|
||
|
|
extern void Gsm_Encoding P((
|
||
|
|
struct gsm_state * S,
|
||
|
|
word * e,
|
||
|
|
word * ep,
|
||
|
|
word * xmaxc,
|
||
|
|
word * Mc,
|
||
|
|
word * xMc));
|
||
|
|
|
||
|
|
extern void Gsm_Short_Term_Analysis_Filter P((
|
||
|
|
struct gsm_state * S,
|
||
|
|
word * LARc, /* coded log area ratio [0..7] IN */
|
||
|
|
word * d /* st res. signal [0..159] IN/OUT */));
|
||
|
|
|
||
|
|
extern void Gsm_Decoder P((
|
||
|
|
struct gsm_state * S,
|
||
|
|
word * LARcr, /* [0..7] IN */
|
||
|
|
word * Ncr, /* [0..3] IN */
|
||
|
|
word * bcr, /* [0..3] IN */
|
||
|
|
word * Mcr, /* [0..3] IN */
|
||
|
|
word * xmaxcr, /* [0..3] IN */
|
||
|
|
word * xMcr, /* [0..13*4] IN */
|
||
|
|
word * s)); /* [0..159] OUT */
|
||
|
|
|
||
|
|
extern void Gsm_Decoding P((
|
||
|
|
struct gsm_state * S,
|
||
|
|
word xmaxcr,
|
||
|
|
word Mcr,
|
||
|
|
word * xMcr, /* [0..12] IN */
|
||
|
|
word * erp)); /* [0..39] OUT */
|
||
|
|
|
||
|
|
extern void Gsm_Long_Term_Synthesis_Filtering P((
|
||
|
|
struct gsm_state* S,
|
||
|
|
word Ncr,
|
||
|
|
word bcr,
|
||
|
|
word * erp, /* [0..39] IN */
|
||
|
|
word * drp)); /* [-120..-1] IN, [0..40] OUT */
|
||
|
|
|
||
|
|
void Gsm_RPE_Decoding P((
|
||
|
|
struct gsm_state *S,
|
||
|
|
word xmaxcr,
|
||
|
|
word Mcr,
|
||
|
|
word * xMcr, /* [0..12], 3 bits IN */
|
||
|
|
word * erp)); /* [0..39] OUT */
|
||
|
|
|
||
|
|
void Gsm_RPE_Encoding P((
|
||
|
|
struct gsm_state * S,
|
||
|
|
word * e, /* -5..-1][0..39][40..44 IN/OUT */
|
||
|
|
word * xmaxc, /* OUT */
|
||
|
|
word * Mc, /* OUT */
|
||
|
|
word * xMc)); /* [0..12] OUT */
|
||
|
|
|
||
|
|
extern void Gsm_Short_Term_Synthesis_Filter P((
|
||
|
|
struct gsm_state * S,
|
||
|
|
word * LARcr, /* log area ratios [0..7] IN */
|
||
|
|
word * drp, /* received d [0...39] IN */
|
||
|
|
word * s)); /* signal s [0..159] OUT */
|
||
|
|
|
||
|
|
extern void Gsm_Update_of_reconstructed_short_time_residual_signal P((
|
||
|
|
word * dpp, /* [0...39] IN */
|
||
|
|
word * ep, /* [0...39] IN */
|
||
|
|
word * dp)); /* [-120...-1] IN/OUT */
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Tables from table.c
|
||
|
|
*/
|
||
|
|
#ifndef GSM_TABLE_C
|
||
|
|
|
||
|
|
extern word gsm_A[8], gsm_B[8], gsm_MIC[8], gsm_MAC[8];
|
||
|
|
extern word gsm_INVA[8];
|
||
|
|
extern word gsm_DLB[4], gsm_QLB[4];
|
||
|
|
extern word gsm_H[11];
|
||
|
|
extern word gsm_NRFAC[8];
|
||
|
|
extern word gsm_FAC[8];
|
||
|
|
|
||
|
|
#endif /* GSM_TABLE_C */
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Debugging
|
||
|
|
*/
|
||
|
|
#ifdef NDEBUG
|
||
|
|
|
||
|
|
# define gsm_debug_words(a, b, c, d) /* nil */
|
||
|
|
# define gsm_debug_longwords(a, b, c, d) /* nil */
|
||
|
|
# define gsm_debug_word(a, b) /* nil */
|
||
|
|
# define gsm_debug_longword(a, b) /* nil */
|
||
|
|
|
||
|
|
#else /* !NDEBUG => DEBUG */
|
||
|
|
|
||
|
|
extern void gsm_debug_words P((char * name, int, int, word *));
|
||
|
|
extern void gsm_debug_longwords P((char * name, int, int, longword *));
|
||
|
|
extern void gsm_debug_longword P((char * name, longword));
|
||
|
|
extern void gsm_debug_word P((char * name, word));
|
||
|
|
|
||
|
|
#endif /* !NDEBUG */
|
||
|
|
|
||
|
|
#include "unproto.h"
|
||
|
|
|
||
|
|
#endif /* PRIVATE_H */
|