basic type mechanism working

1 files changed, 14 insertions, 0 deletions

diff --git a/ffmpeg/libavcodec/ac3dsp.h b/ffmpeg/libavcodec/ac3dsp.h
index bafbc89..bced597 100644
--- a/ffmpeg/libavcodec/ac3dsp.h
+++ b/ffmpeg/libavcodec/ac3dsp.h
@@ -134,6 +134,20 @@ typedef struct AC3DSPContext {
 
     void (*downmix)(float **samples, float (*matrix)[2], int out_ch,
                     int in_ch, int len);
+
+    /**
+     * 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);
 } AC3DSPContext;
 
 void ff_ac3dsp_init    (AC3DSPContext *c, int bit_exact);