swscale: don't use planar output functions to write to NV12/21.

This prevents a crash when converting to NV12/21 without the bitexact
flags enabled.

diff --git a/libswscale/x86/swscale_template.c b/libswscale/x86/swscale_template.c
index 79bf2a4c8c41ebcf200c0572ce3f767e2dd05711..f6e970832d1c92f588ab006d5660383afbd662d4 100644 (file)
--- a/libswscale/x86/swscale_template.c
+++ b/libswscale/x86/swscale_template.c
@@ -2202,7 +2202,8 @@ static av_cold void RENAME(sws_init_swScale)(SwsContext *c)
     enum PixelFormat srcFormat = c->srcFormat,
                      dstFormat = c->dstFormat;
 
-    if (!is16BPS(dstFormat) && !is9_OR_10BPS(dstFormat)) {
+    if (!is16BPS(dstFormat) && !is9_OR_10BPS(dstFormat) &&
+        dstFormat != PIX_FMT_NV12 && dstFormat != PIX_FMT_NV21) {
         if (!(c->flags & SWS_BITEXACT)) {
             if (c->flags & SWS_ACCURATE_RND) {
                 c->yuv2yuv1 = RENAME(yuv2yuv1_ar    );