HostFramePool.hpp

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#pragma once
#include <score_plugin_gfx_export.h>
 
#include <Gfx/Graph/interop/CpuStagedVideoOutput.hpp>
#include <Gfx/Graph/interop/VendorDmaRegistrar.hpp>
 
#include <cstddef>
#include <mutex>
#include <vector>
 
namespace score::gfx::interop
{
 
class SCORE_PLUGIN_GFX_EXPORT HostFramePool
{
public:
  HostFramePool();
  ~HostFramePool();
 
  HostFramePool(const HostFramePool&) = delete;
  HostFramePool& operator=(const HostFramePool&) = delete;
 
  bool allocate(std::size_t frameBytes, int frames, VendorDmaRegistrar reg);
 
  void release();
 
  bool valid() const noexcept { return !m_frames.empty(); }
 
  FrameMemoryProvider provider();
 
  bool owns(const void* p) const noexcept;
 
  void recycle(void* p) noexcept;
 
private:
  VendorFrameMemory acquire() noexcept;
 
  struct Frame
  {
    void* base{};
    std::size_t bytes{};
    bool inUse{};
  };
 
  std::mutex m_mutex;
  std::vector<Frame> m_frames; 
  VendorDmaRegistrar m_reg;
};
 
} // namespace score::gfx::interop