Functional part Kenan Gillet's 'extract and share weighted_vector_sumf'

patchset. Idea is to share this common code between the AMR and QCELP
decoders.

Originally committed as revision 17916 to svn://svn.ffmpeg.org/ffmpeg/trunk

1 files changed, 10 insertions, 0 deletions

diff --git a/libavcodec/acelp_vectors.c b/libavcodec/acelp_vectors.c
index cae6318fa0..5443006718 100644
--- a/libavcodec/acelp_vectors.c
+++ b/libavcodec/acelp_vectors.c
@@ -145,3 +145,13 @@ void ff_acelp_weighted_vector_sum(
                  in_b[i] * weight_coeff_b +
                  rounder) >> shift);
 }
+
+void ff_weighted_vector_sumf(float *out, const float *in_a, const float *in_b,
+                             float weight_coeff_a, float weight_coeff_b, int length)
+{
+    int i;
+
+    for(i=0; i<length; i++)
+        out[i] = weight_coeff_a * in_a[i]
+               + weight_coeff_b * in_b[i];
+}