PPC: swscale: disable altivec functions for unsupported formats

Signed-off-by: Mans Rullgard <mans@mansr.com>

diff --git a/libswscale/ppc/swscale_altivec.c b/libswscale/ppc/swscale_altivec.c
index 14f35b6..396b00c 100644 (file)
--- a/libswscale/ppc/swscale_altivec.c
+++ b/libswscale/ppc/swscale_altivec.c
@@ -407,7 +407,9 @@ void ff_sws_init_swScale_altivec(SwsContext *c)
         return;
 
     c->hScale       = hScale_altivec_real;
-    if (!is16BPS(dstFormat) && !is9_OR_10BPS(dstFormat)) {
+    if (!is16BPS(dstFormat) && !is9_OR_10BPS(dstFormat) &&
+        dstFormat != PIX_FMT_NV12 && dstFormat != PIX_FMT_NV21 &&
+        !c->alpPixBuf) {
         c->yuv2yuvX     = yuv2yuvX_altivec_real;
     }