+DECLARE_ALIGNED(16, float, ff_sine_128[128]);
+DECLARE_ALIGNED(16, float, ff_sine_256[256]);
+DECLARE_ALIGNED(16, float, ff_sine_512[512]);
+DECLARE_ALIGNED(16, float, ff_sine_1024[1024]);
+DECLARE_ALIGNED(16, float, ff_sine_2048[2048]);
+DECLARE_ALIGNED(16, float, ff_sine_4096[4096]);
+
+static float *ff_sine_windows[6] = {
+ ff_sine_128, ff_sine_256, ff_sine_512, ff_sine_1024,
+ ff_sine_2048, ff_sine_4096
+};
+
+/* Generate a sine window. */
+static void sine_window_init(float *window, int n)
+{
+ int i;
+
+ for (i = 0; i < n; i++)
+ window[i] = sinf((i + 0.5) * (M_PI / (2.0 * n)));
+}
+