video: work around libswscale for PNG pixel formats

The intention is that we can test vo_opengl with high bit depth PNGs
better. This throws libswscale completely out of the loop, which before
was needed in order to convert from big endian to little endian.

Also apply a minimal cleanup to fmt-conversion.c (unrelated).

1 files changed, 2 insertions, 1 deletions

diff --git a/video/decode/vd_lavc.c b/video/decode/vd_lavc.c
index ff2fa71131..109099e382 100644
--- a/video/decode/vd_lavc.c
+++ b/video/decode/vd_lavc.c
@@ -45,6 +45,7 @@
 #include "demux/stheader.h"
 #include "demux/packet.h"
 #include "video/csputils.h"
+#include "video/sws_utils.h"
 
 #include "lavc.h"
 
@@ -648,7 +649,7 @@ static int decode(struct dec_video *vd, struct demux_packet *packet,
     if (ctx->hwdec && ctx->hwdec->process_image)
         mpi = ctx->hwdec->process_image(ctx, mpi);
 
-    *out_image = mpi;
+    *out_image = mp_img_swap_to_native(mpi);
     return 1;
 }