[FFmpeg-cvslog] ppc: mpegvideo: Add proper runtime AltiVec detection

[Diego Biurrun]

ffmpeg | branch: master | Diego Biurrun <diego at biurrun.de> | Fri Sep  9 18:30:51 2016 +0200| [468bfe38c66d4d020984158e53b09a6a5749f394] | committer: Diego Biurrun

ppc: mpegvideo: Add proper runtime AltiVec detection

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=468bfe38c66d4d020984158e53b09a6a5749f394
---

 libavcodec/ppc/mpegvideodsp.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/libavcodec/ppc/mpegvideodsp.c b/libavcodec/ppc/mpegvideodsp.c
index e6c0457..eef3e1d 100644
--- a/libavcodec/ppc/mpegvideodsp.c
+++ b/libavcodec/ppc/mpegvideodsp.c
@@ -20,7 +20,9 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
+#include "libavutil/cpu.h"
 #include "libavutil/mem.h"
+#include "libavutil/ppc/cpu.h"
 #include "libavutil/ppc/types_altivec.h"
 #include "libavutil/ppc/util_altivec.h"
 #include "libavcodec/mpegvideodsp.h"
@@ -128,6 +130,9 @@ static void gmc1_altivec(uint8_t *dst /* align 8 */, uint8_t *src /* align1 */,
 av_cold void ff_mpegvideodsp_init_ppc(MpegVideoDSPContext *c)
 {
 #if HAVE_ALTIVEC && HAVE_BIGENDIAN
+    if (!PPC_ALTIVEC(av_get_cpu_flags()))
+        return;
+
     c->gmc1 = gmc1_altivec;
 #endif /* HAVE_ALTIVEC && HAVE_BIGENDIAN */
 }