NvSourceInterface.hpp

#ifndef ZAO_ENDPOINT_VIDEO_NV_SOURCE_INTERFACE_HPP_
#define ZAO_ENDPOINT_VIDEO_NV_SOURCE_INTERFACE_HPP_
 
#include <future>
#include <memory>
#include <vector>
 
#include "../SourceStreamInterface.hpp"
#include "../StreamInterface.hpp"
#include "../TimestampInterface.hpp"
#include "NvBufferInterface.hpp"
#include "VideoFormat.hpp"
 
// 前方宣言
struct v4l2_buffer;
class NvBuffer;
namespace v4l2 {
struct VideoFormat;
}
 
namespace zao {
namespace endpoint {
namespace video {
 
class NvSourceCallbackInterface;
 
class NvSourceInterface : public StreamInterface, public SourceStreamInterface {
 public:
  virtual void SetAcceptableFormats(
      const std::vector<VideoFormat>& formats) = 0;
 
  virtual bool GetDecidedFormat(VideoFormat& format) const noexcept = 0;
 
  virtual std::shared_future<VideoFormat> GetFormatDecisionStatus()
      const noexcept = 0;
 
  virtual std::unique_ptr<NvBufferInterface> DequeueBuffer() = 0;
  virtual bool QueueBuffer(std::unique_ptr<NvBufferInterface> buffer) = 0;
 
  virtual void SendStatistics(/*TODO*/) = 0;
 
  virtual void RegisterCallback(
      const std::shared_ptr<NvSourceCallbackInterface>& listener,
      bool use_weak_ptr = false) = 0;
 
  virtual void RegisterCallback(
      std::unique_ptr<NvSourceCallbackInterface>&& listener) = 0;
 
  virtual ~NvSourceInterface() noexcept = default;
};
 
class NvSourceCallbackInterface : public StreamCallbackInterface,
                                  public SourceStreamCallbackInterface {
 public:
  enum class EventType {
    kUnknown = 0,
 
    kDisconnected,
 
    kUnlinked,
 
    kFailedFormatNegotiation,
  };
 
  virtual bool OnRequestSourceFormat(const VideoFormat& format) = 0;
 
  virtual void OnNotifySourceEvent(EventType type, const std::string& message) {
  }
 
  virtual ~NvSourceCallbackInterface() noexcept = default;
};
 
}  // namespace video
}  // namespace endpoint
}  // namespace zao
 
#endif  // ZAO_ENDPOINT_VIDEO_NV_SOURCE_INTERFACE_HPP_