ref: 455880cdb3e12f68ba06b025898442f0917a8483
dir: /src/libgsm/private.h/
/* * 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/sox/sox/src/libgsm/Attic/private.h,v 1.8 2007/01/29 03:09:33 cbagwell Exp $*/ #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 */ /* * 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 ( 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 ( /* 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 ( struct gsm_state * S, word * s, /* 0..159 signals IN/OUT */ word * LARc); /* 0..7 LARc's OUT */ extern void Gsm_Preprocess ( struct gsm_state * S, word * s, word * so); extern void Gsm_Encoding ( struct gsm_state * S, word * e, word * ep, word * xmaxc, word * Mc, word * xMc); extern void Gsm_Short_Term_Analysis_Filter ( 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 ( 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 ( 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 ( 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 ( struct gsm_state *S, word xmaxcr, word Mcr, word * xMcr, /* [0..12], 3 bits IN */ word * erp); /* [0..39] OUT */ void Gsm_RPE_Encoding ( 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 ( 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 ( 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 (char * name, int, int, word *); extern void gsm_debug_longwords (char * name, int, int, longword *); extern void gsm_debug_longword (char * name, longword); extern void gsm_debug_word (char * name, word); #endif /* !NDEBUG */ #endif /* PRIVATE_H */