gsm610_priv.h
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上传日期:2022-01-05
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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.
- */
- #ifndef PRIVATE_H
- #define PRIVATE_H
- /* Added by Erik de Castro Lopo */
- #define USE_FLOAT_MUL
- #define FAST
- #define WAV49
- #ifdef __cplusplus
- #error "This code is not designed to be compiled with a C++ compiler."
- #endif
- /* 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 */
- /* Moved here from code.c where it was defined as static */
- word e[50] ;
- } ;
- typedef struct gsm_state GSM_STATE ;
- #define MIN_WORD (-32767 - 1)
- #define MAX_WORD 32767
- #define MIN_LONGWORD (-2147483647 - 1)
- #define MAX_LONGWORD 2147483647
- /* Signed arithmetic shift right. */
- static inline word
- SASR_W (word x, word by)
- { return (x >> by) ;
- } /* SASR */
- static inline longword
- SASR_L (longword x, word by)
- { return (x >> by) ;
- } /* SASR */
- /*
- * Prototypes from add.c
- */
- word gsm_mult (word a, word b) ;
- longword gsm_L_mult (word a, word b) ;
- word gsm_mult_r (word a, word b) ;
- word gsm_div (word num, word denum) ;
- word gsm_add (word a, word b ) ;
- longword gsm_L_add (longword a, longword b ) ;
- word gsm_sub (word a, word b) ;
- longword gsm_L_sub (longword a, longword b) ;
- word gsm_abs (word a) ;
- word gsm_norm (longword a ) ;
- longword gsm_L_asl (longword a, int n) ;
- word gsm_asl (word a, int n) ;
- longword gsm_L_asr (longword a, int n) ;
- word gsm_asr (word a, int n) ;
- /*
- * Inlined functions from add.h
- */
- static inline longword
- GSM_MULT_R (word a, word b)
- { return (((longword) (a)) * ((longword) (b)) + 16384) >> 15 ;
- } /* GSM_MULT_R */
- static inline longword
- GSM_MULT (word a, word b)
- { return (((longword) (a)) * ((longword) (b))) >> 15 ;
- } /* GSM_MULT */
- static inline longword
- GSM_L_MULT (word a, word b)
- { return ((longword) (a)) * ((longword) (b)) << 1 ;
- } /* GSM_L_MULT */
- static inline longword
- GSM_L_ADD (longword a, longword b)
- { ulongword utmp ;
- if (a < 0 && b < 0)
- { utmp = (ulongword)-((a) + 1) + (ulongword)-((b) + 1) ;
- return (utmp >= (ulongword) MAX_LONGWORD) ? MIN_LONGWORD : -(longword)utmp-2 ;
- } ;
- if (a > 0 && b > 0)
- { utmp = (ulongword) a + (ulongword) b ;
- return (utmp >= (ulongword) MAX_LONGWORD) ? MAX_LONGWORD : utmp ;
- } ;
- return a + b ;
- } /* GSM_L_ADD */
- static inline longword
- GSM_ADD (word a, word b)
- { longword ltmp ;
- ltmp = ((longword) a) + ((longword) b) ;
- if (ltmp >= MAX_WORD)
- return MAX_WORD ;
- if (ltmp <= MIN_WORD)
- return MIN_WORD ;
- return ltmp ;
- } /* GSM_ADD */
- static inline longword
- GSM_SUB (word a, word b)
- { longword ltmp ;
- ltmp = ((longword) a) - ((longword) b) ;
- if (ltmp >= MAX_WORD)
- ltmp = MAX_WORD ;
- else if (ltmp <= MIN_WORD)
- ltmp = MIN_WORD ;
- return ltmp ;
- } /* GSM_SUB */
- static inline word
- GSM_ABS (word a)
- {
- if (a > 0)
- return a ;
- if (a == MIN_WORD)
- return MAX_WORD ;
- return -a ;
- } /* GSM_ADD */
- /*
- * More prototypes from implementations..
- */
- 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 */
- 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 */
- void Gsm_LPC_Analysis (
- struct gsm_state * S,
- word * s, /* 0..159 signals IN/OUT */
- word * LARc) ; /* 0..7 LARc's OUT */
- void Gsm_Preprocess (
- struct gsm_state * S,
- word * s, word * so) ;
- void Gsm_Encoding (
- struct gsm_state * S,
- word * e,
- word * ep,
- word * xmaxc,
- word * Mc,
- word * xMc) ;
- 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 */
- 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 */
- void Gsm_Decoding (
- struct gsm_state * S,
- word xmaxcr,
- word Mcr,
- word * xMcr, /* [0..12] IN */
- word * erp) ; /* [0..39] OUT */
- 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 */
- 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 */
- 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 */
- void gsm_debug_words (char * name, int, int, word *) ;
- void gsm_debug_longwords (char * name, int, int, longword *) ;
- void gsm_debug_longword (char * name, longword) ;
- void gsm_debug_word (char * name, word) ;
- #endif /* !NDEBUG */
- #endif /* PRIVATE_H */