Scrambler

A simple scrambler CLI utility built around sp_scramber.

#include <time.h>
#include "soundpipe.h"
#include "dr_wav/dr_wav.h"

int scrambler_main(int argc, char *argv[])
{
    sp_data *sp;
    sp_ftbl *src;
    sp_ftbl *dst;
    int rc;
    drwav *wav;
    drwav infile;
    int sr;
    drwav_data_format format;

    if (argc < 3) {
        printf("Usage: %s in.wav out.wav\n", argv[0]);
        return 1;
    }

    sp_create(&sp);
    sp_srand(sp, time(NULL));
    src = NULL;
    dst = NULL;
    wav = NULL;
    rc = sp_ftbl_loadwav(sp, &src, argv[1]);


    if (rc != SP_OK) {
        printf("Could not load %s\n", argv[1]);
        rc = 1;
        goto cleanup;
    }

    /* get samplerate */

    drwav_init_file(&infile, argv[1]);
    sr = infile.sampleRate;
    drwav_uninit(&infile);

    sp_gen_scrambler(sp, src, &dst);

    format.container = drwav_container_riff;
    format.format = DR_WAVE_FORMAT_IEEE_FLOAT;
    format.channels = 1;
    format.sampleRate = sr;
    format.bitsPerSample = 32;
    wav = drwav_open_file_write(argv[2], &format);

    drwav_write(wav, dst->size, dst->tbl);

    rc = 0;
    cleanup:
    if (dst != NULL) sp_ftbl_destroy(&dst);
    if (src != NULL) sp_ftbl_destroy(&src);
    if (wav != NULL) {
        drwav_close(wav);
    }
    sp_destroy(&sp);
    return rc;
}

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