mxl-multiviewer/AppConfig.hpp

#pragma once

#include <cstdint>
#include <optional>
#include <string>
#include <string_view>
#include <vector>

constexpr uint32_t DefaultGridCols = 2;
constexpr uint32_t DefaultGridRows = 2;
constexpr uint32_t MaxFeedCount = 16;
constexpr const char* AppName = "MXL Multiviewer";
constexpr uint32_t AppVersionMajor = 0;
constexpr uint32_t AppVersionMinor = 1;
constexpr uint32_t AppVersionPatch = 0;

enum class FeedKind
{
    NoSignal,
    MxlPlaceholder,
    SmpteBars,
    MxlSdk
};

enum class PresentModeConfig
{
    Fifo,
    Mailbox,
    Immediate
};

struct FeedConfig
{
    FeedKind kind = FeedKind::NoSignal;
    std::string mxlDomain;
    std::string mxlFlowId;
};

struct AppConfig
{
    bool logFps = true;
    bool logPerf = false;
    bool verbose = false;
    uint32_t fpsCap = 60;
    uint32_t gridCols = DefaultGridCols;
    uint32_t gridRows = DefaultGridRows;
    PresentModeConfig presentMode = PresentModeConfig::Mailbox;
    std::vector<FeedConfig> feeds;
};

std::optional<FeedKind> parseFeedKind(std::string_view text);
std::string_view feedKindName(FeedKind kind);

void printUsage(const char* executableName);

struct ConfigParseResult
{
    AppConfig config;
    bool shouldExit = false;
    int exitCode = 0;
};

ConfigParseResult parseAppConfig(
    int argc,
    char* argv[]);