amplify.c

Ugrás a fájl dokumentációjához.

 
#include <stdio.h>
#include "binary_streams.h"
 
typedef float sample_t;
 
int main(int argc, char **argv)
{
    // read command line argument (gain)
    double gain = 1.0;
    if (argc > 1)
        sscanf(argv[1], "%lf", &gain);
 
    // reopen streams as binary
    binary_streams();
 
    // read samples while possible
    sample_t samples[2];
    while (fread(samples, sizeof(sample_t), 2, stdin) == 2)
    {
        // apply amplification
        samples[0] *= gain;
        samples[1] *= gain;
 
        // write samples
        fwrite(samples, sizeof(sample_t), 2, stdout);
    }
    return 0;
}