[vlc-commits] copy: do one big memcpy when possible

[Steve Lhomme]

vlc | branch: master | Steve Lhomme <robUx4 at videolabs.io> | Thu Jul 28 14:45:39 2016 +0200| [1bea49c20dfff725bf238f336c7b9d8c82d7408d] | committer: Jean-Baptiste Kempf

copy: do one big memcpy when possible

> http://git.videolan.org/gitweb.cgi/vlc.git/?a=commit;h=1bea49c20dfff725bf238f336c7b9d8c82d7408d
---

 modules/video_chroma/copy.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/modules/video_chroma/copy.c b/modules/video_chroma/copy.c
index cdeb96c..fa0a212 100644
--- a/modules/video_chroma/copy.c
+++ b/modules/video_chroma/copy.c
@@ -270,6 +270,9 @@ static void SSE_CopyPlane(uint8_t *dst, size_t dst_pitch,
     const unsigned hstep = cache_size / w16;
     assert(hstep > 0);
 
+    if (src_pitch == dst_pitch)
+        memcpy(dst, src, width * height);
+    else
     for (unsigned y = 0; y < height; y += hstep) {
         const unsigned hblock =  __MIN(hstep, height - y);
 
@@ -407,6 +410,9 @@ static void CopyPlane(uint8_t *dst, size_t dst_pitch,
                       const uint8_t *src, size_t src_pitch,
                       unsigned width, unsigned height)
 {
+    if (src_pitch == dst_pitch)
+        memcpy(dst, src, width * height);
+    else
     for (unsigned y = 0; y < height; y++) {
         memcpy(dst, src, width);
         src += src_pitch;