advance_cache_head()

void MayaFlux::Kakshya::VideoStreamContainer::advance_cache_head ( uint64_t  frame_index )

inline

Advance the container's view of how many frames have been decoded.

Called by the decode thread (via VideoFileReader) after commit_frame(). Monotonically increasing; never decremented (seek resets via setup_ring).

Parameters

frame_index

The highest frame index just committed.

Definition at line 177 of file VideoStreamContainer.hpp.

    {
        uint64_t prev = m_cache_head.load(std::memory_order_relaxed);
        while (frame_index > prev
            && !m_cache_head.compare_exchange_weak(prev, frame_index,
                std::memory_order_release, std::memory_order_relaxed)) { }
    }

Referenced by commit_frame().

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