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