BufferAccumulator.hpp

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#pragma once
#include <Pothos/Config.hpp>
#include <Pothos/Framework/BufferChunk.hpp>
#include <Pothos/Util/RingDeque.hpp>
#include <memory>
#include <cassert>

namespace Pothos {

class POTHOS_API BufferAccumulator
{
public:

    BufferAccumulator(void);

    bool empty(void) const;

    void push(const BufferChunk &buffer);

    const BufferChunk &front(void) const;

    void pop(const size_t numBytes);

    size_t getTotalBytesAvailable(void) const;

    void require(const size_t numBytes);

    size_t getUniqueManagedBufferCount(void) const;

private:
    Util::RingDeque<BufferChunk> _queue;
    size_t _bytesAvailable;
    struct Impl;
    std::shared_ptr<Impl> _impl;
};

} //namespace Pothos

inline bool Pothos::BufferAccumulator::empty(void) const
{
    return _bytesAvailable == 0;
}

inline const Pothos::BufferChunk &Pothos::BufferAccumulator::front(void) const
{
    assert(not _queue.empty());
    return _queue.front();
}

inline size_t Pothos::BufferAccumulator::getTotalBytesAvailable(void) const
{
    return _bytesAvailable;
}