ThreadedDeflater.hxx

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#ifndef INCLUDED_PACKAGE_THREADEDDEFLATER_HXX
#define INCLUDED_PACKAGE_THREADEDDEFLATER_HXX
 
#include <com/sun/star/uno/Sequence.hxx>
#include <com/sun/star/io/XInputStream.hpp>
#include <com/sun/star/uno/Reference.hxx>
#include <comphelper/threadpool.hxx>
#include <memory>
#include <vector>
#include <functional>
 
namespace ZipUtils
{
class ThreadedDeflater final
{
    class Task;
    // Note: All this should be lock-less. Each task writes only to its part
    // of the data.
    std::vector<std::vector<sal_Int8>> outBuffers;
    std::shared_ptr<comphelper::ThreadTaskTag> threadTaskTag;
    css::uno::Sequence<sal_Int8> inBuffer;
    css::uno::Sequence<sal_Int8> prevDataBlock;
    std::function<void(const css::uno::Sequence<sal_Int8>&, sal_Int32)> maProcessOutputFunc;
    sal_Int64 totalIn;
    sal_Int64 totalOut;
    int zlibLevel;
 
public:
    // Unlike with Deflater class, bNoWrap is always true.
    ThreadedDeflater(sal_Int32 nSetLevel);
    ~ThreadedDeflater() COVERITY_NOEXCEPT_FALSE;
    void deflateWrite(
        const css::uno::Reference<css::io::XInputStream>& xInStream,
        std::function<void(const css::uno::Sequence<sal_Int8>&, sal_Int32)> aProcessInputFunc,
        std::function<void(const css::uno::Sequence<sal_Int8>&, sal_Int32)> aProcessOutputFunc);
    sal_Int64 getTotalIn() const { return totalIn; }
    sal_Int64 getTotalOut() const { return totalOut; }
 
private:
    void processDeflatedBuffers();
    void clear();
};
 
} // namespace
 
#endif
 
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