Method SetCapacity

engine/dlib/src/jc/ringbuffer.h:130–165

template <typename T>
void RingBuffer<T>::SetCapacity(uint32_t capacity)
{
    size_t old_capacity = Capacity();
    if (capacity == old_capacity)
        return;

    if (capacity == 0)
    {
        Free();
        return;
    }

    T* newbuffer = newbuffer = (T*)malloc(capacity*sizeof(T));

    uint32_t size = Size();
    if (size > capacity)
    {
        size = capacity;
    }

    // copy elements in reverse in order to keep the last inserted items
    // E.g. resize from cap=6 to cap=4: 123456 -> 3456
    for (int i = ((int)size)-1; i >= 0; --i)
    {
        newbuffer[i] = (*this)[(uint32_t)i];
    }

    T* tmp = m_Buffer;
    m_Buffer = newbuffer;
    free(tmp);

    m_Tail = 0;
    m_Head = size;
    m_Max = capacity;
    m_Full = capacity == size ? 1 : 0;
}

template <typename T>
void RingBuffer<T>::OffsetCapacity(uint32_t grow)