pEpACIDgen/examples/lib/lib_synth_shed/synth_shed.c

#include "synth_shed.h"
#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
#include <string.h>

void init_synth_shed() {
    printf("init_synth_shed() - called\n");
}

SYNTH_STATUS synth_create(synth_t **new_synth, const char *brand, const char *model, int osc_count) {
    assert(brand);
    assert(model);

    if (brand == NULL || brand[0] == '\0') {
        return SYNTH_STATUS_ARG_ERR;
    }

    if (model == NULL || brand[0] == '\0') {
        return SYNTH_STATUS_ARG_ERR;
    }

    printf("%s::%s brand:'%s, model: %s'\n", __FILE__, __FUNCTION__, brand, model);

    synth_t *_new_synth = (synth_t *) malloc(sizeof(synth_t));
    assert(_new_synth);
    if (_new_synth == NULL) {
        return SYNTH_STATUS_ERR;
    }

    _new_synth->brand = brand;
    _new_synth->model = model;
    _new_synth->osc_count = osc_count;
    _new_synth->technology = ANALOG;
    _new_synth->filter[0].technology = ANALOG;
    _new_synth->filter[0].type = LPF;
    _new_synth->filter[1].technology = ANALOG;
    _new_synth->filter[1].type = HPF;
    _new_synth->filter[2].technology = ANALOG;
    _new_synth->filter[2].type = BPF;

    *new_synth = _new_synth;

    return SYNTH_STATUS_OK;
}

SYNTH_STATUS synth_set_osc_count(synth_t *synth, int osc_count) {
    assert(synth);
    SYNTH_STATUS status = 0;
    if (osc_count < 0) {
        status = 1;
    } else {
        synth->osc_count = osc_count;
    }
    return status;
}


//SYNTH_STATUS synth_set_filter(synth_t* synth, filter_t* filt);

//SYNTH_STATUS synth_set_tech(synth_t* synth, tech_t tech);

const char *status_to_string(SYNTH_STATUS status) {
    const char *ret = "unknown status";
    if (status == SYNTH_STATUS_OK) {
        ret = "SYNTH_STATUS_OK";
    }
    if (status == SYNTH_STATUS_ERR) {
        ret = "SYNTH_STATUS_ERR";
    }
    if (status == SYNTH_STATUS_ARG_ERR) {
        ret = "SYNTH_STATUS_ARG_ERR";
    }
    return ret;
}

const char *tech_to_string(const enum _tech *tech) {
    assert(tech);
    const char *ret = "unknown tech";
    if (*tech == ANALOG) {
        return "ANALOG";
    }
    if (*tech == DIGITAL) {
        return "DIGITAL";
    }
    return ret;
}


SYNTH_STATUS filtertype_to_string(const filtertype_t *const filt, char **ftstr) {
    assert(filt);
    char *_ftstr = "unknown filtertype";
    if (filt == NULL) {
        return SYNTH_STATUS_ARG_ERR;
    }

    if (*filt == LPF) {
        _ftstr = "LPF";
    }
    if (*filt == HPF) {
        _ftstr = "HPF";
    }
    if (*filt == BPF) {
        _ftstr = "BPF";
    }

    *ftstr = _ftstr;
    return SYNTH_STATUS_OK;
}


const char *play_synth(synth_t *synth) {
    assert(synth);
    char ret[9999];
    const char *greet = "PLAYING SYNTH:";
    const char *brand = synth->brand;
    const char *model = synth->model;

    char osc[4];
    sprintf(osc, "%i", synth->osc_count);

    const char *tech = tech_to_string(&synth->technology);


    const char *filt_tech[3] = {"", "", ""};
    const char *filtertype_str[3] = {"", "", ""};

    for (int i = 0; i < 3; i++) {
        filt_tech[i] = tech_to_string(&synth->filter[i].technology);

        SYNTH_STATUS status = filtertype_to_string(&synth->filter[i].type, &filtertype_str[i]);
        if (status != SYNTH_STATUS_OK) {
            printf("%s", status_to_string(status));
        }
    }

    sprintf(ret, "%s\n"
                 "brand: %s\n"
                 "model: %s\n"
                 "osc: %s\n"
                 "tech:%s\n"
                 "filt[0]:%s / %s\n"
                 "filt[1]:%s / %s\n"
                 "filt[2]:%s / %s\n"
                 "\n",
            greet, brand, model, osc, tech,
            filt_tech[0], filtertype_str[0],
            filt_tech[1], filtertype_str[1],
            filt_tech[2], filtertype_str[2]);
    return strdup(ret);
}