private.h
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- /*
- * 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: /cvsroot/vocal.modules/contrib/libsndfile-0.0.22/src/GSM610/private.h,v 1.2 2001/02/27 19:23:15 deepalir Exp $*/
- #ifndef PRIVATE_H
- #define PRIVATE_H
- /* Added by Erik de Castro Lopo */
- #define NeedFunctionPrototypes 1
- #define SASR
- #define USE_FLOAT_MUL
- #define FAST
- #define WAV49
- /* Added by Erik de Castro Lopo */
- typedef short word; /* 16 bit signed int */
- typedef int longword; /* 32 bit signed int */
- typedef unsigned short uword; /* unsigned word */
- typedef unsigned int 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 (word a, word b);
- extern longword gsm_L_mult (word a, word b);
- extern word gsm_mult_r (word a, word b);
- extern word gsm_div (word num, word denum);
- extern word gsm_add (word a, word b );
- extern longword gsm_L_add (longword a, longword b );
- extern word gsm_sub (word a, word b);
- extern longword gsm_L_sub (longword a, longword b);
- extern word gsm_abs (word a);
- extern word gsm_norm (longword a );
- extern longword gsm_L_asl (longword a, int n);
- extern word gsm_asl (word a, int n);
- extern longword gsm_L_asr (longword a, int n);
- extern word gsm_asr (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)
- # 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)
- ((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)
- # 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 */