62 lines
931 B
C++
62 lines
931 B
C++
/* $Id$ */
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#ifndef RINGBUFFER_H
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#define RINGBUFFER_H
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class RingBuffer {
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private:
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uint8_t *m_buffer;
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uint8_t *m_end;
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uint8_t *m_write;
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uint8_t *m_read;
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public:
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RingBuffer(size_t length)
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{
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m_buffer = (uint8_t *)malloc(length);
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m_end = m_buffer + length;
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m_write = m_buffer;
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m_read = m_buffer;
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}
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~RingBuffer()
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{
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free(m_buffer);
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}
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void Write(uint8_t *buffer, size_t length)
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{
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while (length--) {
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if (m_write == m_end) m_write = m_buffer;
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*m_write++ = *buffer++;
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}
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}
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void Read(uint8_t *buffer, size_t length)
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{
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while (length--) {
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if (m_read == m_end) m_read = m_buffer;
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*buffer++ = *m_read++;
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}
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}
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size_t Size() const
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{
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if (m_write >= m_read) return m_write - m_read;
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return (m_end - m_read) + (m_write - m_buffer);
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}
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size_t Free() const
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{
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return (m_end - m_buffer) - Size();
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}
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void Reset()
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{
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m_write = m_buffer;
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m_read = m_buffer;
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}
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};
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#endif /* RINGBUFFER_H */
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