Function parse_parametric_equalizer_band

src/utility.c:164–211

* Parses a equalizer band string into a struct parametric_equalizer_band. * * Expected band_str format: "float,float,float,string" * Expected fields: "frequency,gain,q-factor,filter-type" * * Returns HSC_INVALID_ARG if the string can't be parsed. */

 * Returns HSC_INVALID_ARG if the string can't be parsed.
 */
static int parse_parametric_equalizer_band(const char* band_str, struct parametric_equalizer_band* out_band)
{
    const char* delim = " ,";

    // Make a modifiable copy of input, because strtok modifies the string.
    char* tmp = strdup(band_str);
    if (!tmp) {
        return -1;
    }

    // parse freq, gain, q_factor, type
    char* token = strtok(tmp, delim);
    if (!token) {
        free(tmp);
        return HSC_INVALID_ARG;
    }
    out_band->frequency = strtof(token, NULL);

    token = strtok(NULL, delim);
    if (!token) {
        free(tmp);
        return HSC_INVALID_ARG;
    }
    out_band->gain = strtof(token, NULL);

    token = strtok(NULL, delim);
    if (!token) {
        free(tmp);
        return HSC_INVALID_ARG;
    }
    out_band->q_factor = strtof(token, NULL);

    token = strtok(NULL, delim);
    if (!token) {
        free(tmp);
        return HSC_INVALID_ARG;
    }

    out_band->type = parse_eq_filter_type(token);
    if ((int)out_band->type == HSC_INVALID_ARG) {
        printf("Couldn't parse filter type: %s\n", token);
        free(tmp);
        return HSC_INVALID_ARG;
    }

    free(tmp);
    return 0;
}

/**
 * Parses the full parametric equalizer string that can contain multiple band