#include <stdio.h>
#include <stdlib.h>
#include "waveio.h"


#define SAMPLE_RATE 44100

//#define HEX

int main(int argc, char **argv) {
    FILE *srcfile, *wavfile;
    int sample1, sample2, scan;
    int len = 0;
    char buf[1024];

    if(argc < 3) {
	printf("Usage: %s srcfile wavfile\n", *argv);
	printf("   Convert srcfile to a WAV file.  srcfile must be a text file\n");
	printf("   with one (for mono) or two (for stereo) 16-bit decimal samples per line.\n");
	printf("Example: %s mysounds.raw mysounds.wav\n", *argv);
	exit(0);
    }

    if(NULL == (srcfile = fopen(argv[1], "r"))) {
	printf("Error opening source file\n");
	exit(1);
    }

    if(NULL == (wavfile = open_wav(argv[2],SAMPLE_RATE))) {
	printf("Error opening destination file\n");
	exit(1);
    }

    while(fgets(buf, 1024, srcfile)) {
#ifdef HEX
	if(sscanf(buf, "%x, %x", &sample1, &sample2) < 2)
	    if((scan = sscanf(buf, "%x %x", &sample1, &sample2)) < 2) {
#else
	if(fscanf(srcfile, "%d, %d", &sample1, &sample2) < 2)
	    if((scan = fscanf(srcfile, "%d %d", &sample1, &sample2)) < 2) {
#endif
		if(scan == 1) 
		    sample2 = sample1; // mono sound
		else 
		    sample1 = sample2 = 0;
	    }
	fwrite(&sample1, 2, 1, wavfile); // left channel
	fwrite(&sample2, 2, 1, wavfile); // right channel
	len+=2;
    }
    
    close_wav(wavfile,len);
    fclose(srcfile);
}