Distort: add distortion to a WAV music input.

master
Karchnu 1 year ago
parent f927499e22
commit efcf811633

@ -0,0 +1,50 @@
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <sndfile.h>
#define BUFFER_LEN 1024
int main(int argc, char **argv) {
int distortionLevel;
SNDFILE *infile, *outfile;
SF_INFO sfinfo;
double buffer[BUFFER_LEN];
// Check for distortion level argument
if (argc < 2) {
printf("Usage: %s distortion_level\n", argv[0]);
return 1;
}
distortionLevel = atoi(argv[1]);
// Open standard input as input file
if (!(infile = sf_open_fd(0, SFM_READ, &sfinfo, 0))) {
printf("Error: could not open standard input\n");
return 1;
}
// Open standard output as output file
if (!(outfile = sf_open_fd(1, SFM_WRITE, &sfinfo, 0))) {
printf("Error: could not open standard output\n");
return 1;
}
// Read and process data
while (sf_read_double(infile, buffer, BUFFER_LEN) > 0) {
for (int i=0; i<BUFFER_LEN; i++) {
// Add distortion to the sample
buffer[i] = buffer[i] * (1.0 + (distortionLevel/100.0) * sin(2.0 * M_PI * buffer[i]));
}
// Write the processed sample to the output file
sf_write_double(outfile, buffer, BUFFER_LEN);
}
// Close files
sf_close(infile);
sf_close(outfile);
return 0;
}
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