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/* ITU-T G.729 Software Package Release 2 (November 2006) */ 
/* 
   ITU-T G.729 Annex C - Reference C code for floating point 
                         implementation of G.729 
                         Version 1.01 of 15.September.98 
*/ 
 
/* 
---------------------------------------------------------------------- 
                    COPYRIGHT NOTICE 
---------------------------------------------------------------------- 
   ITU-T G.729 Annex C ANSI C source code 
   Copyright (C) 1998, AT&T, France Telecom, NTT, University of 
   Sherbrooke.  All rights reserved. 
 
---------------------------------------------------------------------- 
*/ 
 
/* 
 File : DECODER.C 
 Used for the floating point version of G.729 main body 
 (not for G.729A) 
*/ 
 
/*-----------------------------------------------------------------* 
 * Main program of the G.729  8.0 kbit/s decoder.                  * 
 *                                                                 * 
 *    Usage : decoder  bitstream_file  synth_file                  * 
 *                                                                 * 
 *-----------------------------------------------------------------*/ 
 
#if defined(__BORLANDC__) 
extern unsigned _stklen = 48000U; 
#endif 
 
#include  
#include  
 
#include "typedef.h" 
#include "ld8k.h" 
 
 
/*-----------------------------------------------------------------* 
 *            Main decoder routine                                 * 
 *-----------------------------------------------------------------*/ 
 
int main( int argc, char *argv[]) 
{ 
   FLOAT  synth_buf[L_FRAME+M];            /* Synthesis                  */ 
   FLOAT  *synth; 
   int    parm[PRM_SIZE+1];                /* Synthesis parameters + BFI */ 
   INT16  serial[SERIAL_SIZE];             /* Serial stream              */ 
   FLOAT  Az_dec[2*MP1], *ptr_Az;          /* Decoded Az for post-filter */ 
   int    t0_first; 
   FLOAT  pst_out[L_FRAME];                /* postfilter output          */ 
 
   int voicing;                    /* voicing for previous subframe */ 
   int sf_voic;                    /* voicing for subframe */ 
 
   INT32   frame; 
   FILE   *f_syn, *f_serial; 
 
   int   i; 
 
 
   printf("\n"); 
   printf("**************    G.729  8 KBIT/S SPEECH DECODER    ************\n"); 
   printf("\n"); 
   printf("----------------- Floating point C simulation ----------------\n"); 
   printf("\n"); 
   printf("------------ Version 1.01 (Release 2, November 2006) --------\n"); 
   printf("\n"); 
 
   /* Passed arguments */ 
 
   if ( argc != 3) 
     { 
        printf("Usage :%s bitstream_file  outputspeech_file\n",argv[0]); 
        printf("\n"); 
        printf("Format for bitstream_file:\n"); 
        printf("  One (2-byte) synchronization word \n"); 
        printf("  One (2-byte) size word,\n"); 
        printf("  80 words (2-byte) containing 80 bits.\n"); 
        printf("\n"); 
        printf("Format for outputspeech_file:\n"); 
        printf("  Synthesis is written to a binary file of 16 bits data.\n"); 
        exit( 1 ); 
     } 
 
   /* Open file for synthesis and packed serial stream */ 
 
   if( (f_serial = fopen(argv[1],"rb") ) == NULL ) 
     { 
        printf("%s - Error opening file  %s !!\n", argv[0], argv[1]); 
        exit(0); 
     } 
 
   if( (f_syn = fopen(argv[2], "wb") ) == NULL ) 
     { 
        printf("%s - Error opening file  %s !!\n", argv[0], argv[2]); 
        exit(0); 
     } 
 
   printf("Input bitstream file  :   %s\n",argv[1]); 
   printf("Synthesis speech file :   %s\n",argv[2]); 
 
/*-----------------------------------------------------------------* 
 *           Initialization of decoder                             * 
 *-----------------------------------------------------------------*/ 
 
  for (i=0; i