Add apply_window_int16() to DSPContext with x86-optimized versions and use it

in the ac3_fixed encoder.

1 files changed, 14 insertions, 0 deletions

diff --git a/libavcodec/dsputil.h b/libavcodec/dsputil.h
index 18885b3b79..a5ae68ab8b 100644
--- a/libavcodec/dsputil.h
+++ b/libavcodec/dsputil.h
@@ -524,6 +524,20 @@ typedef struct DSPContext {
      */
     int32_t (*scalarproduct_and_madd_int16)(int16_t *v1/*align 16*/, const int16_t *v2, const int16_t *v3, int len, int mul);
 
+    /**
+     * Apply symmetric window in 16-bit fixed-point.
+     * @param output destination array
+     *               constraints: 16-byte aligned
+     * @param input  source array
+     *               constraints: 16-byte aligned
+     * @param window window array
+     *               constraints: 16-byte aligned, at least len/2 elements
+     * @param len    full window length
+     *               constraints: multiple of ? greater than zero
+     */
+    void (*apply_window_int16)(int16_t *output, const int16_t *input,
+                               const int16_t *window, unsigned int len);
+
     /* rv30 functions */
     qpel_mc_func put_rv30_tpel_pixels_tab[4][16];
     qpel_mc_func avg_rv30_tpel_pixels_tab[4][16];