gui_buff.h

/*
 * Copyright (c) 2019 Tilen MAJERLE
 *  
 * Permission is hereby granted, free of charge, to any person
 * obtaining a copy of this software and associated documentation
 * files (the "Software"), to deal in the Software without restriction,
 * including without limitation the rights to use, copy, modify, merge,
 * publish, distribute, sublicense, and/or sell copies of the Software, 
 * and to permit persons to whom the Software is furnished to do so, 
 * subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE
 * AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 *
 * This file is part of EasyGUI library.
 *
 * Author:          Tilen Majerle <tilen@majerle.eu>
 */
#ifndef GUI_HDR_BUFF_H
#define GUI_HDR_BUFF_H

/* C++ detection */
#ifdef __cplusplus
extern "C" {
#endif
    
#include "gui_utils.h"
#include <stdlib.h>
#include <string.h>
#include <stdint.h>

#define GUI_BUFFER_INITIALIZED      0x01    
#define GUI_BUFFER_MALLOC           0x02    
typedef struct gui_buff_t {
    uint32_t size;                  
    uint32_t in;                    
    uint32_t out;                   
    uint8_t* buff;                  
    uint8_t flags;                  
    void* arg;                      
} gui_buff_t;

uint8_t gui_buffer_init(gui_buff_t* buff, uint32_t size, void* buff_ptr);
void gui_buffer_free(gui_buff_t* buff);
uint32_t gui_buffer_write(gui_buff_t* buff, const void* data, uint32_t count);
uint32_t gui_buffer_read(gui_buff_t* buff, void* data, uint32_t count);
uint32_t gui_buffer_getfree(gui_buff_t* buff);
uint32_t gui_buffer_getfull(gui_buff_t* buff);
void gui_buffer_reset(gui_buff_t* buff);

/* C++ detection */
#ifdef __cplusplus
}
#endif

#endif /* GUI_HDR_BUFF_H */