fileio.c

CHAPTER 1- real-Time Digital Signal Processing: Implementations and Applications, Second Edition by

// 
//  Project: Experiment 1.6.4 File IO - Chapter 1 
//  File name: fileIO.c   
//
//  Description: This function is for experiment 1.6.4 fileIO
//
//  For the book "Real Time Digital Signal Processing: 
//                Implementation and Application, 2nd Ed"
//                By Sen M. Kuo, Bob H. Lee, and Wenshun Tian
//                Publisher: John Wiley and Sons, Ltd
//
//  Tools used: CCS v.2.12.07
//              TMS320VC5510 DSK Rev-C
//

#include <stdio.h>
#include "fileIO.h"

void main()
{ 
  FILE  *inFile;       // File pointer of input signal
  FILE  *outLeftFile;  // File pointer of left channel output signal
  FILE  *outRightFile; // File pointer of right channel output signal
  short x[4];
  char  wavHd[44]; 

  inFile = fopen("..\\data\\inStereo.wav", "rb");
  if (inFile == NULL)
  {
    printf("Can't open inStereo.wav");
    exit(0);
  }
  outLeftFile = fopen("..\\data\\outLeftCh.wav", "wb");
  outRightFile = fopen("..\\data\\outRightCh.wav", "wb");
                
  // Skip input wav file header                
  fread(wavHd, sizeof(char), 44, inFile); 
  // Add wav header to left and right channel output files
  fwrite(wavHeader, sizeof(char), 44, outLeftFile);  
  fwrite(wavHeader, sizeof(char), 44, outRightFile); 
    
  // Read stereo input and write to left/right channels
  while( (fread(x, sizeof(char), 4, inFile) == 4) )
  {    
     fwrite(&x[0], sizeof(char), 2, outLeftFile); 
     fwrite(&x[2], sizeof(char), 2, outRightFile);     
  }
    
  fclose(inFile);
  fclose(outLeftFile);
  fclose(outRightFile);
}