mmx 16-bit ssd. 2.3x faster svq1 encoding.

Originally committed as revision 8559 to svn://svn.ffmpeg.org/ffmpeg/trunk

1 files changed, 10 insertions, 0 deletions

diff --git a/libavcodec/dsputil.c b/libavcodec/dsputil.c
index 6aa54538ec..3f5e845e7e 100644
--- a/libavcodec/dsputil.c
+++ b/libavcodec/dsputil.c
@@ -3694,6 +3694,14 @@ static int vsse16_c(/*MpegEncContext*/ void *c, uint8_t *s1, uint8_t *s2, int st
     return score;
 }
 
+static int ssd_int8_vs_int16_c(int8_t *pix1, int16_t *pix2, int size){
+    int score=0;
+    int i;
+    for(i=0; i<size; i++)
+        score += (pix1[i]-pix2[i])*(pix1[i]-pix2[i]);
+    return score;
+}
+
 WARPER8_16_SQ(hadamard8_diff8x8_c, hadamard8_diff16_c)
 WARPER8_16_SQ(hadamard8_intra8x8_c, hadamard8_intra16_c)
 WARPER8_16_SQ(dct_sad8x8_c, dct_sad16_c)
@@ -4076,6 +4084,8 @@ void dsputil_init(DSPContext* c, AVCodecContext *avctx)
     c->w97[1]= w97_8_c;
 #endif
 
+    c->ssd_int8_vs_int16 = ssd_int8_vs_int16_c;
+
     c->add_bytes= add_bytes_c;
     c->diff_bytes= diff_bytes_c;
     c->sub_hfyu_median_prediction= sub_hfyu_median_prediction_c;