cut.c

#include <stdio.h>
 
#ifdef _WIN32
#include <io.h>
#include <fcntl.h>
#endif
 
typedef float sample_t;
 
int const sample_rate = 44100;
 
int main(int argc, char *argv[])
{
    double dstart, dstop;
    long long int start, stop, k;
    sample_t samples[2];
    
    if (argc < 3) {
        fprintf(stderr, "Usage: %s start stop\n", argv[0]);
        return 1;
    }
    
    sscanf(argv[1], "%lf", &dstart);
    sscanf(argv[2], "%lf", &dstop);
    start = dstart * sample_rate;
    stop = dstop * sample_rate;
    
#ifdef _WIN32
    setmode(fileno(stdin), O_BINARY);
    setmode(fileno(stdout), O_BINARY);
#else
    freopen(NULL, "rb", stdin);
    freopen(NULL, "wb", stdout);
#endif
    
    k = 0;
    while (fread(samples, sizeof(sample_t), 2, stdin) == 2) {
        if (k >= start && k <= stop)
            fwrite(samples, sizeof(sample_t), 2, stdout);
        ++k;
    }
 
    return 0;
}