VoiceProtocol.hpp

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#pragma once
 
#include "ecs/components/ClientId.hpp"
 
#include <cstdint>
#include <optional>
#include <span>
#include <vector>
 
namespace net::voice
{
 
inline constexpr int k_sampleRate = 48000;
inline constexpr int k_channels = 1;
inline constexpr std::uint8_t k_frameMs = 20;
inline constexpr std::uint16_t k_maxOpusBytes = 512;
 
struct ClientVoiceFrame
{
    std::uint16_t sequence = 0;
    std::uint8_t frameMs = k_frameMs;
    std::vector<std::uint8_t> opus;
};
 
struct ClientVoiceFrameView
{
    std::uint16_t sequence = 0;
    std::uint8_t frameMs = k_frameMs;
    std::span<const std::uint8_t> opus;
};
 
struct ServerVoiceFrame
{
    ClientId speaker{};
    std::uint16_t sequence = 0;
    std::uint8_t frameMs = k_frameMs;
    std::vector<std::uint8_t> opus;
};
 
[[nodiscard]] std::vector<std::uint8_t>
encodeClientFrame(std::uint16_t sequence, std::uint8_t frameMs, std::span<const std::uint8_t> opus);
[[nodiscard]] std::vector<std::uint8_t>
encodeServerFrame(ClientId speaker, std::uint16_t sequence, std::uint8_t frameMs, std::span<const std::uint8_t> opus);
[[nodiscard]] std::optional<ClientVoiceFrameView> decodeClientFrameView(std::span<const std::uint8_t> payload);
[[nodiscard]] std::optional<ClientVoiceFrame> decodeClientFrame(std::span<const std::uint8_t> payload);
[[nodiscard]] std::optional<ServerVoiceFrame> decodeServerFrame(std::span<const std::uint8_t> payload);
 
} // namespace net::voice