87 lines
2.9 KiB
Zig
87 lines
2.9 KiB
Zig
const std = @import("std");
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const toml = @import("toml");
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const Allocator = std.mem.Allocator;
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const log = std.log.scoped(.Config);
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var state: Config = .{};
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const Config = struct {
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host: Host = .{},
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guest: Guest = .{},
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debug: Debug = .{},
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/// Settings related to the Computer the Emulator is being run on
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const Host = struct {
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/// Using Nearest-Neighbor, multiply the resolution of the GBA Window
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win_scale: i64 = 3,
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/// Enable Vsync
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///
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/// Note: This does not affect whether Emulation is synced to 59Hz
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vsync: bool = true,
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/// Mute ZBA
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mute: bool = false,
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};
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// Settings realted to the emulation itself
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const Guest = struct {
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/// Whether Emulation thread to sync to Audio Callbacks
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audio_sync: bool = true,
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/// Whether Emulation thread should sync to 59Hz
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video_sync: bool = true,
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/// Whether RTC I/O should always be enabled
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force_rtc: bool = false,
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/// Skip BIOS
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skip_bios: bool = false,
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};
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/// Settings related to debugging ZBA
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const Debug = struct {
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/// Enable CPU Trace logs
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cpu_trace: bool = false,
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/// If false and ZBA is built in debug mode, ZBA will panic on unhandled I/O
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unhandled_io: bool = true,
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};
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};
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pub fn config() *const Config {
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return &state;
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}
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/// Reads a config file and then loads it into the global state
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pub fn load(allocator: Allocator, file_path: []const u8) !void {
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var config_file = try std.fs.cwd().openFile(file_path, .{});
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defer config_file.close();
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log.info("loaded from {s}", .{file_path});
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const contents = try config_file.readToEndAlloc(allocator, try config_file.getEndPos());
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defer allocator.free(contents);
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var parser = try toml.parseFile(allocator, file_path);
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defer parser.deinit();
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const table = try parser.parse();
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defer table.deinit();
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// TODO: Report unknown config options
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if (table.keys.get("Host")) |host| {
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if (host.Table.keys.get("win_scale")) |scale| state.host.win_scale = scale.Integer;
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if (host.Table.keys.get("vsync")) |vsync| state.host.vsync = vsync.Boolean;
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if (host.Table.keys.get("mute")) |mute| state.host.mute = mute.Boolean;
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}
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if (table.keys.get("Guest")) |guest| {
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if (guest.Table.keys.get("audio_sync")) |sync| state.guest.audio_sync = sync.Boolean;
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if (guest.Table.keys.get("video_sync")) |sync| state.guest.video_sync = sync.Boolean;
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if (guest.Table.keys.get("force_rtc")) |forced| state.guest.force_rtc = forced.Boolean;
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if (guest.Table.keys.get("skip_bios")) |skip| state.guest.skip_bios = skip.Boolean;
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}
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if (table.keys.get("Debug")) |debug| {
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if (debug.Table.keys.get("cpu_trace")) |trace| state.debug.cpu_trace = trace.Boolean;
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if (debug.Table.keys.get("unhandled_io")) |unhandled| state.debug.unhandled_io = unhandled.Boolean;
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}
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}
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