[FFmpeg-cvslog] postproc: fix unaligned access

[Andreas Cadhalpun]

ffmpeg | branch: release/2.6 | Andreas Cadhalpun <Andreas.Cadhalpun at googlemail.com> | Thu Jun 18 20:15:12 2015 +0200| [cd85dd1373d636e810dad84ef297ed2827782630] | committer: Michael Niedermayer

postproc: fix unaligned access

QP_store is only 8-bit-aligned, so accessing it as uint32_t causes
SIGBUS crashes on sparc.
The AV_RN32/AV_WN32 macros only do unaligned access in the
HAVE_FAST_UNALIGNED case.

Reviewed-by: Michael Niedermayer <michaelni at gmx.at>
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun at googlemail.com>
(cherry picked from commit 590743101dc934043f34013f1c9bb9fb261355b0)

Signed-off-by: Michael Niedermayer <michaelni at gmx.at>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=cd85dd1373d636e810dad84ef297ed2827782630
---

 libpostproc/postprocess.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/libpostproc/postprocess.c b/libpostproc/postprocess.c
index 9d89782..1bc08c0 100644
--- a/libpostproc/postprocess.c
+++ b/libpostproc/postprocess.c
@@ -76,6 +76,7 @@ try to unroll inner for(x=0 ... loop to avoid these damn if(x ... checks
 #include "config.h"
 #include "libavutil/avutil.h"
 #include "libavutil/avassert.h"
+#include "libavutil/intreadwrite.h"
 #include <inttypes.h>
 #include <stdio.h>
 #include <stdlib.h>
@@ -1028,7 +1029,7 @@ void  pp_postprocess(const uint8_t * src[3], const int srcStride[3],
             int i;
             const int count= FFMAX(mbHeight * QPStride, mbWidth);
             for(i=0; i<(count>>2); i++){
-                ((uint32_t*)c->nonBQPTable)[i] = ((const uint32_t*)QP_store)[i] & 0x3F3F3F3F;
+                AV_WN32(c->nonBQPTable + (i<<2), AV_RN32(QP_store + (i<<2)) & 0x3F3F3F3F);
             }
             for(i<<=2; i<count; i++){
                 c->nonBQPTable[i] = QP_store[i] & 0x3F;