Initial commit: Go driver for the Lian Li Galahad II LCD

Streams H.264 to the Galahad II LCD via USB (gousb) with: - ffmpeg CLI transcoding (no fragile FFmpeg C-ABI bindings) - pure-Go Annex-B access-unit splitting - framerate pacing with graceful shutdown and USB reconnect - TOML config, cobra CLI, structured slog logging, unit tests
2026-08-19 12:03:54 +07:00
commit 4c34f0bedc
33 changed files with 2432 additions and 0 deletions
@@ -0,0 +1,84 @@
+package config
+
+import (
+	"path/filepath"
+	"testing"
+)
+
+func TestDefault(t *testing.T) {
+	cfg := Default()
+	if cfg.Display.Speed != 1.0 {
+		t.Errorf("default speed = %v, want 1.0", cfg.Display.Speed)
+	}
+	if cfg.USB.VendorID != DefaultVendorID || cfg.USB.ProductID != DefaultProductID {
+		t.Errorf("default usb ids = %x:%x, want %x:%x",
+			cfg.USB.VendorID, cfg.USB.ProductID, DefaultVendorID, DefaultProductID)
+	}
+	if cfg.Stream.CachePath == "" {
+		t.Error("default cache_path must not be empty")
+	}
+}
+
+func TestLoadMissingFileReturnsDefaults(t *testing.T) {
+	cfg, err := Load(filepath.Join(t.TempDir(), "nope.toml"))
+	if err != nil {
+		t.Fatalf("Load(missing) error = %v", err)
+	}
+	if cfg.Display.Input != "" {
+		t.Errorf("input = %q, want empty", cfg.Display.Input)
+	}
+}
+
+func TestSaveAndLoadRoundTrip(t *testing.T) {
+	path := filepath.Join(t.TempDir(), "sub", "galahad2lcd.toml")
+	orig := Default()
+	orig.Display.Input = "/tmp/demo.gif"
+	orig.Display.Rotate = 180
+	orig.Display.Speed = 1.5
+	orig.USB.VendorID = 0x1234
+	orig.Stream.FPS = 15
+
+	if err := orig.Save(path); err != nil {
+		t.Fatalf("Save error = %v", err)
+	}
+
+	got, err := Load(path)
+	if err != nil {
+		t.Fatalf("Load error = %v", err)
+	}
+	if got.Display != orig.Display {
+		t.Errorf("display = %+v, want %+v", got.Display, orig.Display)
+	}
+	if got.USB != orig.USB {
+		t.Errorf("usb = %+v, want %+v", got.USB, orig.USB)
+	}
+	if got.Stream != orig.Stream {
+		t.Errorf("stream = %+v, want %+v", got.Stream, orig.Stream)
+	}
+}
+
+func TestValidate(t *testing.T) {
+	tests := []struct {
+		name    string
+		mutate  func(*Config)
+		wantErr bool
+	}{
+		{"valid", func(c *Config) { c.Display.Input = "/tmp/x.gif" }, false},
+		{"empty input", func(c *Config) {}, true},
+		{"bad rotate", func(c *Config) { c.Display.Input = "/tmp/x.gif"; c.Display.Rotate = 45 }, true},
+		{"negative speed", func(c *Config) { c.Display.Input = "/tmp/x.gif"; c.Display.Speed = -1 }, true},
+		{"negative fps", func(c *Config) { c.Display.Input = "/tmp/x.gif"; c.Stream.FPS = -2 }, true},
+		{"empty cache", func(c *Config) { c.Display.Input = "/tmp/x.gif"; c.Stream.CachePath = "" }, true},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			cfg := Default()
+			tt.mutate(&cfg)
+			err := cfg.Validate()
+			if (err != nil) != tt.wantErr {
+				t.Errorf("Validate() error = %v, wantErr = %v", err, tt.wantErr)
+			}
+		})
+	}
+}