#pragma once

#include <cstdint>
#include <span>
#include <vector>

namespace sc {

// Minimal RTP header (RFC 3550) without extensions.
struct RtpHeader {
    uint8_t version = 2;
    bool padding = false;
    bool extension = false;
    uint8_t csrc_count = 0;
    bool marker = false;
    uint7_t payload_type = 96;  // dynamic
    uint16_t sequence_number = 0;
    uint32_t timestamp = 0;
    uint32_t ssrc = 0;

    bool serialize ( std::span<std::byte, 12> out ) const noexcept;
    static std::optional<RtpHeader> parse ( std::span<const std::byte, 12> in ) noexcept;
};

struct RtpPacket {
    RtpHeader header;
    std::vector<std::byte> payload;

    std::vector<std::byte> serialize () const;
    static std::optional<RtpPacket> parse ( std::span<const std::byte> in ) noexcept;
};

}  // namespace sc