avutil/float_dsp: add vector_dmac_scalar()

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

libavutil/float_dsp.c

@@ -40,6 +40,14 @@ static void vector_fmac_scalar_c(float *dst, const float *src, float mul,
         dst[i] += src[i] * mul;
 }
 
+static void vector_dmac_scalar_c(double *dst, const double *src, double mul,
+                                 int len)
+{
+    int i;
+    for (i = 0; i < len; i++)
+        dst[i] += src[i] * mul;
+}
+
 static void vector_fmul_scalar_c(float *dst, const float *src, float mul,
                                  int len)
 {
@@ -125,6 +133,7 @@ av_cold AVFloatDSPContext *avpriv_float_dsp_alloc(int bit_exact)
     fdsp->vector_fmul = vector_fmul_c;
     fdsp->vector_fmac_scalar = vector_fmac_scalar_c;
     fdsp->vector_fmul_scalar = vector_fmul_scalar_c;
+    fdsp->vector_dmac_scalar = vector_dmac_scalar_c;
     fdsp->vector_dmul_scalar = vector_dmul_scalar_c;
     fdsp->vector_fmul_window = vector_fmul_window_c;
     fdsp->vector_fmul_add = vector_fmul_add_c;

libavutil/float_dsp.h

@@ -54,6 +54,22 @@ typedef struct AVFloatDSPContext {
     void (*vector_fmac_scalar)(float *dst, const float *src, float mul,
                                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.

libavutil/version.h

@@ -80,7 +80,7 @@
 
 #define LIBAVUTIL_VERSION_MAJOR  55
 #define LIBAVUTIL_VERSION_MINOR  60
-#define LIBAVUTIL_VERSION_MICRO 100
+#define LIBAVUTIL_VERSION_MICRO 101
 
 #define LIBAVUTIL_VERSION_INT   AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \
                                                LIBAVUTIL_VERSION_MINOR, \