ju_vars.h

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/* Jack Utils Variables API
 * Copyright (C) UtoECat 2022. All rights Reserved!
 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
#pragma once
 
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <jackgui.h>
 
typedef struct ju_var_s ju_var_t;
 
struct ju_varclass {
    void (*render) (jg_ctx_t* gui, ju_var_t* v);
    int  (*parse ) (FILE* f,  ju_var_t* v);
    int  (*write ) (FILE* f,  ju_var_t* v);
    float widthratio;
};
 
struct ju_var_s {
    const struct ju_varclass* _vp; 
    union {
        void*       p;
        int         i;
        ju_sample_t f;
    } data[5]; 
    ju_cstr_t name; 
};
 
JU_API ju_var_t ju_var_nil();
 
JU_API ju_var_t ju_var_float_rw(ju_cstr_t name, float* val, float min, float max);
 
JU_API ju_var_t ju_var_float_ro(ju_cstr_t name, float* val);
 
JU_API void ju_vars_lock();
 
JU_API void ju_vars_unlock();
 
JU_API int ju_vars_save(ju_cstr_t filename, ju_var_t* vararr);
 
JU_API int ju_vars_load(ju_cstr_t filename, ju_var_t* vararr);
 
JU_API int ju_vars_draw(jg_ctx_t* u, ju_var_t* vararr, int eh);