1 files changed, 21 insertions, 0 deletions
diff --git a/src/sdl/bg-style.h b/src/sdl/bg-style.h
new file mode 100644
index 0000000..c4ca9a5
--- /dev/null
+++ b/src/sdl/bg-style.h
@@ -0,0 +1,21 @@
+#ifndef BG_STYLE_H
+#define BG_STYLE_H
+
+#include <SDL.h> // SDL_Color
+
+typedef struct {
+  struct {
+    int base,
+        amplitude,
+        phase,
+        period;
+  } r, g, b, a;
+} bg_style_t;
+
+SDL_Color
+bg_style_get_color(
+  const bg_style_t * const,
+  const Uint32
+);
+
+#endif /* BG_STYLE_H */