feat(player): vlc subtitle options

constants/SubtitleConstants.ts

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+/**
+ * VLC subtitle styling constants
+ * These values are used with VLC's FreeType subtitle rendering engine
+ */
+
+// VLC color values (decimal representation of hex colors)
+export const VLC_COLORS: Record<string, number> = {
+  Black: 0,
+  Gray: 8421504,
+  Silver: 12632256,
+  White: 16777215,
+  Maroon: 8388608,
+  Red: 16711680,
+  Fuchsia: 16711935,
+  Yellow: 16776960,
+  Olive: 8421376,
+  Green: 32768,
+  Teal: 32896,
+  Lime: 65280,
+  Purple: 8388736,
+  Navy: 128,
+  Blue: 255,
+  Aqua: 65535,
+};
+
+// VLC color names for UI display
+export const VLC_COLOR_OPTIONS = Object.keys(VLC_COLORS);
+
+// VLC outline thickness values in pixels
+export const OUTLINE_THICKNESS: Record<string, number> = {
+  None: 0,
+  Thin: 2,
+  Normal: 4,
+  Thick: 6,
+};
+
+// Outline thickness options for UI
+export const OUTLINE_THICKNESS_OPTIONS = Object.keys(
+  OUTLINE_THICKNESS,
+) as Array<"None" | "Thin" | "Normal" | "Thick">;