[FFmpeg-cvslog] swscale: Fix stack alignment for SSE

[John Stebbins]

ffmpeg | branch: master | John Stebbins <jstebbins.hb at gmail.com> | Fri Nov 18 15:06:17 2011 -0800| [09d243ddd0d939e97f3fe0b7f27320763ee41493] | committer: Ronald S. Bultje

swscale: Fix stack alignment for SSE

Although gcc guarantees 16 byte stack alignment, threads under WinXP
don't appear to be guaranteed to start stack aligned.  So fix the
alignment.

Signed-off-by: Ronald S. Bultje <rsbultje at gmail.com>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=09d243ddd0d939e97f3fe0b7f27320763ee41493
---

 libswscale/swscale_unscaled.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/libswscale/swscale_unscaled.c b/libswscale/swscale_unscaled.c
index c0161c2..c7e6a28 100644
--- a/libswscale/swscale_unscaled.c
+++ b/libswscale/swscale_unscaled.c
@@ -806,7 +806,7 @@ static int check_image_pointers(uint8_t *data[4], enum PixelFormat pix_fmt,
  * swscale wrapper, so we don't need to export the SwsContext.
  * Assumes planar YUV to be in YUV order instead of YVU.
  */
-int sws_scale(struct SwsContext *c, const uint8_t* const srcSlice[],
+int attribute_align_arg sws_scale(struct SwsContext *c, const uint8_t* const srcSlice[],
               const int srcStride[], int srcSliceY, int srcSliceH,
               uint8_t* const dst[], const int dstStride[])
 {