[FFmpeg-cvslog] swscale: Check memory allocation

[Federico Tomassetti]

ffmpeg | branch: master | Federico Tomassetti <federico at tomassetti.me> | Sat Mar 21 10:45:01 2015 +0000| [7ebb3022297aa00afda6800105684b8303f2608e] | committer: Luca Barbato

swscale: Check memory allocation

Bug-Id: CID 1267890
CC: libav-stable at libav.org

Signed-off-by: Luca Barbato <lu_zero at gentoo.org>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=7ebb3022297aa00afda6800105684b8303f2608e
---

 libswscale/utils.c |   22 ++++++++++++++--------
 1 file changed, 14 insertions(+), 8 deletions(-)

diff --git a/libswscale/utils.c b/libswscale/utils.c
index 23d7c93..f5b2511 100644
--- a/libswscale/utils.c
+++ b/libswscale/utils.c
@@ -1382,17 +1382,13 @@ SwsFilter *sws_getDefaultFilter(float lumaGBlur, float chromaGBlur,
         filter->chrV = sws_getIdentityVec();
     }
 
-    if (!filter->lumH || !filter->lumV || !filter->chrH || !filter->chrV) {
-        sws_freeVec(filter->lumH);
-        sws_freeVec(filter->lumV);
-        sws_freeVec(filter->chrH);
-        sws_freeVec(filter->chrV);
-        av_freep(&filter);
-        return NULL;
-    }
+    if (!filter->lumH || !filter->lumV || !filter->chrH || !filter->chrV)
+        goto fail;
 
     if (chromaSharpen != 0.0) {
         SwsVector *id = sws_getIdentityVec();
+        if (!id)
+            goto fail;
         sws_scaleVec(filter->chrH, -chromaSharpen);
         sws_scaleVec(filter->chrV, -chromaSharpen);
         sws_addVec(filter->chrH, id);
@@ -1402,6 +1398,8 @@ SwsFilter *sws_getDefaultFilter(float lumaGBlur, float chromaGBlur,
 
     if (lumaSharpen != 0.0) {
         SwsVector *id = sws_getIdentityVec();
+        if (!id)
+            goto fail;
         sws_scaleVec(filter->lumH, -lumaSharpen);
         sws_scaleVec(filter->lumV, -lumaSharpen);
         sws_addVec(filter->lumH, id);
@@ -1426,6 +1424,14 @@ SwsFilter *sws_getDefaultFilter(float lumaGBlur, float chromaGBlur,
         sws_printVec2(filter->lumH, NULL, AV_LOG_DEBUG);
 
     return filter;
+
+fail:
+    sws_freeVec(filter->lumH);
+    sws_freeVec(filter->lumV);
+    sws_freeVec(filter->chrH);
+    sws_freeVec(filter->chrV);
+    av_freep(&filter);
+    return NULL;
 }
 
 SwsVector *sws_allocVec(int length)