BufferQueue.h

/*
 * micro MSX2+ - Simple Buffer Queue
 * -----------------------------------------------------------------------------
 * The MIT License (MIT)
 *
 * Copyright (c) 2023 Yoji Suzuki.
 *
 * 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.
 * -----------------------------------------------------------------------------
 */
#ifndef INCLUDE_BUFFER_QUEUE_H
#define INCLUDE_BUFFER_QUEUE_H
#include <stdio.h>

#define BUFFER_BLOCK_SIZE 8192

class BufferQueue {
private:
    void *buffer;
    void *resultBuffer;
    size_t size;
    size_t cursor;

public:
    BufferQueue(size_t iSize);
    ~BufferQueue();
    bool enqueue(const void *aBuffer, const size_t aSize);
    void dequeue(void **oBuffer, size_t *oSize, size_t limit = 0xffffffff);
    size_t getSize() {
        return size;
    }
    size_t getCursor() {
        return cursor;
    }
    void clear() {
        cursor = 0;
    }
};

#endif