metadata.h

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#pragma once
#include <array>
#include <memory>
#include <optional>
#include <vector>
 
#include "exports.h"
namespace millicast {
 
enum class SeiMessageType {
  PIC_TIMING,
  UNREGISTERED_USER_DATA,
};
 
class SeiUserUnregisteredData;
class SeiPicTiming;
 
class MILLICAST_API SeiMessage {
 public:
  virtual SeiMessageType type() const = 0;
 
  virtual SeiUserUnregisteredData* sei_user_unregistered_message() {
    return nullptr;
  }
 
  virtual SeiPicTiming* sei_pic_timing_message() { return nullptr; }
 
  virtual ~SeiMessage() = default;
};
 
class MILLICAST_API SeiUserUnregisteredData : public SeiMessage {
 public:
  static constexpr unsigned int UUID_SIZE = 16;
 
  SeiMessageType type() const final;
 
  SeiUserUnregisteredData* sei_user_unregistered_message() override;
 
  virtual std::array<uint8_t, UUID_SIZE> uuid() const = 0;
 
  virtual const std::vector<uint8_t>& user_data() const = 0;
};
 
class SeiPicTiming : public SeiMessage {
 public:
  SeiMessageType type() const final;
 
  SeiPicTiming* sei_pic_timing_message() override;
 
  struct TimeCode {
    bool full{false}; 
    std::optional<uint8_t> seconds;
    std::optional<uint8_t> minutes;
    std::optional<uint8_t> hours;
  };
 
  virtual std::vector<TimeCode> timecodes() const = 0;
};
 
struct MILLICAST_API FrameMetadata {
  FrameMetadata() = default;
  FrameMetadata(FrameMetadata&&) = default;
  FrameMetadata& operator=(FrameMetadata&&) = default;
  FrameMetadata(const FrameMetadata&) = delete;
  FrameMetadata& operator=(const FrameMetadata&) = delete;
 
  std::vector<std::unique_ptr<SeiMessage>> sei_messages;
 
  uint32_t rtp_timestamp;
};
 
}  // namespace millicast