writ_dat.c

关于AMR-WB+语音压缩编码的实现代码

/*----------------------------------------------------------------------
 *
 *  FUNCTION:   writ_data
 *
 *  PURPOSE:  round array of float data to 16-bit words and write to the
 *            file "fp"
 *
 *--------------------------------------------------------------------------*/
#include <stdio.h>
#include "../include/amr_plus.h"
void writ_data(
  float data[],  /* input : data              */
  int   size,    /* input : number of samples */
  FILE  *fp      /* output: file pointer      */
)
{
  short data16[4*L_FRAME_FSMAX];
  int   i;
  float temp;
  for (i = 0; i < size; i++)
  {
    temp = data[i];
    if (temp >= 0.0)
      temp += 0.5;
    else
      temp -= 0.5;
    if (temp >  32767.0 ) temp =  32767.0;
    if (temp < -32767.0 ) temp = -32767.0;
    data16[i] = (short) temp;
  }
  fwrite(data16, sizeof(short), size, fp);
  return;
}