/*   ITU-T G.729 Annex C - Reference C code for floating point                         implementation of G.729 Annex A                         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 : CODERA.C Used for the floating point version of G.729A only (not for G.729 main body)*//*-------------------------------------------------------------------* * Main program of the ITU-T G.729A  8 kbit/s encoder.               * *                                                                   * *    Usage : coder speech_file  bitstream_file                      * *-------------------------------------------------------------------*/#include "typedef.h"#include "ld8a.h"#include "cst_ld8a.h"#include "octet.h"int main( int argc, char *argv[]){   FILE *f_speech;                     /* Speech data        */   FILE *f_serial;                     /* Serial bit stream  */   static int prm[1+PRM_SIZE];          /* Transmitted parameters        */   static INT16 serial[SERIAL_SIZE];   /* Output bit stream buffer      */   static INT16 sp16[L_FRAME];         /* Buffer to read 16 bits speech */	/* For G.729B */	int nb_words;	int vad_enable;	/* New unstaticed states */	struct preproc_state_t preproc_s;	struct cod_state_t cod_s;   int i;   int frame;   int count_frame;	printf("\n");	printf("***********    ITU G.729A 8 KBIT/S SPEECH CODER    ***********\n");	printf("                        (WITH ANNEX B)                        \n");	printf("\n");	printf("----------------- Floating point C simulation ----------------\n");	printf("\n");	printf("-------------------       Version 1.4        -----------------\n");	printf("\n");   /*-----------------------------------------------------------------------*    * Open speech file and result file (output serial bit stream)           *    *-----------------------------------------------------------------------*/  if ( argc != 4 ){    printf("Usage :%s speech_file  bitstream_file  VAD_flag\n", argv[0]);    printf("\n");    printf("Format for speech_file:\n");    printf("  Speech is read from a binary file of 16 bits PCM data.\n");    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("VAD flag:\n");    printf("  0 to disable the VAD\n");    printf("  1 to enable the VAD\n");    exit(1);  }  if ( (f_speech = fopen(argv[1], "rb")) == NULL) {     printf("%s - Error opening file  %s !!\n", argv[0], argv[1]);     exit(0);   }  printf(" Input speech file:  %s\n", argv[1]);  if ( (f_serial = fopen(argv[2], "wb")) == NULL) {     printf("%s - Error opening file  %s !!\n", argv[0], argv[2]);     exit(0);  }  printf(" Output bitstream file:  %s\n", argv[2]);  vad_enable = atoi(argv[3]);  if (vad_enable == 1)    printf(" VAD enabled\n");  else    printf(" VAD disabled\n");#ifndef OCTET_TX_MODE  printf(" OCTET TRANSMISSION MODE is disabled\n");#endif  /*-------------------------------------------------*   * Initialization of the coder.                    *   *-------------------------------------------------*/   init_pre_process(&preproc_s);   init_coder_ld8a(&cod_s);           /* Initialize the coder             */   /* for G.729B */   init_cod_cng(&cod_s.cng_s);   /*-------------------------------------------------------------------------*    * Loop for every analysis/transmission frame.                             *    * -New L_FRAME data are read. (L_FRAME = number of speech data per frame) *    * -Conversion of the speech data from 16 bit integer to real              *    * -Call cod_ld8a to encode the speech.                                    *    * -The compressed serial output stream is written to a file.              *    * -The synthesis speech is written to a file                              *    *-------------------------------------------------------------------------*    */	frame = 0;	count_frame = 0;	while( fread((void *)sp16, sizeof(INT16), L_FRAME, f_speech) == L_FRAME)	{		frame++;		printf(" Frame: %d\r", count_frame++);		if (frame == 32767)			frame = 256;		else			frame++;		for (i = 0; i < L_FRAME; i++)  cod_s.new_speech[i] = (FLOAT) sp16[i];		pre_process(&preproc_s, cod_s.new_speech, L_FRAME);		coder_ld8a(&cod_s, prm, frame, vad_enable);		prm2bits_ld8k(prm, serial);		nb_words = serial[1] + 2;		fwrite(serial, sizeof(INT16), nb_words, f_serial);	}   return 0;} /* end of main() */