avutil/float_dsp: add vector_dmac_scalar()

Signed-off-by: Paul B Mahol <onemda@gmail.com>

1 files changed, 16 insertions, 0 deletions

diff --git a/libavutil/float_dsp.h b/libavutil/float_dsp.h
index d1be38f947..2c24d93471 100644
--- a/libavutil/float_dsp.h
+++ b/libavutil/float_dsp.h
@@ -55,6 +55,22 @@ typedef struct AVFloatDSPContext {
                                int len);
 
     /**
+     * Multiply a vector of doubles by a scalar double and add to
+     * destination vector.  Source and destination vectors must
+     * overlap exactly or not at all.
+     *
+     * @param dst result vector
+     *            constraints: 32-byte aligned
+     * @param src input vector
+     *            constraints: 32-byte aligned
+     * @param mul scalar value
+     * @param len length of vector
+     *            constraints: multiple of 16
+     */
+    void (*vector_dmac_scalar)(double *dst, const double *src, double mul,
+                               int len);
+
+    /**
      * Multiply a vector of floats by a scalar float.  Source and
      * destination vectors must overlap exactly or not at all.
      *