[FFmpeg-cvslog] libswscale/x86/swscale: Only call ff_yuv2yuvX functions if the input size is > 0

[Alan Kelly]

ffmpeg | branch: master | Alan Kelly <alankelly at google.com> | Thu Apr  1 12:00:16 2021 +0200| [dc57762cb43619f91fd2a5d95510fa3b14cfeaaf] | committer: Michael Niedermayer

libswscale/x86/swscale: Only call ff_yuv2yuvX functions if the input size is > 0

Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=dc57762cb43619f91fd2a5d95510fa3b14cfeaaf
---

 libswscale/x86/swscale.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/libswscale/x86/swscale.c b/libswscale/x86/swscale.c
index cc9e8b0155..0848a31461 100644
--- a/libswscale/x86/swscale.c
+++ b/libswscale/x86/swscale.c
@@ -197,7 +197,8 @@ static void yuv2yuvX_ ##opt(const int16_t *filter, int filterSize, \
                            const int16_t **src, uint8_t *dest, int dstW, \
                            const uint8_t *dither, int offset) \
 { \
-    ff_yuv2yuvX_ ##opt(filter, filterSize - 1, 0, dest - offset, dstW + offset, dither, offset); \
+    if(dstW > 0) \
+        ff_yuv2yuvX_ ##opt(filter, filterSize - 1, 0, dest - offset, dstW + offset, dither, offset); \
     return; \
 }
 
@@ -215,7 +216,8 @@ static void yuv2yuvX_ ##opt(const int16_t *filter, int filterSize, \
         yuv2yuvX_mmx(filter, filterSize, src, dest, dstW, dither, offset); \
         return; \
     } \
-    ff_yuv2yuvX_ ##opt(filter, filterSize - 1, 0, dest - offset, pixelsProcessed + offset, dither, offset); \
+    if(pixelsProcessed > 0) \
+        ff_yuv2yuvX_ ##opt(filter, filterSize - 1, 0, dest - offset, pixelsProcessed + offset, dither, offset); \
     if(remainder > 0){ \
       ff_yuv2yuvX_mmx(filter, filterSize - 1, pixelsProcessed, dest - offset, pixelsProcessed + remainder + offset, dither, offset); \
     } \