mp_image: require using mp_image_set_size() for setting w/h

Setting the size of a mp_image must be done with mp_image_set_size()
now. Do this to guarantee that the redundant fields (like chroma_width)
are updated consistently. Replacing the redundant fields by function
calls would probably be better, but there are too many uses of them,
and is a bit less convenient.

Most code actually called mp_image_setfmt(), which did this as well.
This commit just makes things a bit more explicit.

Warning: the video filter chain still sets up mp_images manually,
and vf_get_image() is not updated.

1 files changed, 3 insertions, 0 deletions

diff --git a/video/mp_image.h b/video/mp_image.h
index c57d0a63e9..2fb693eb65 100644
--- a/video/mp_image.h
+++ b/video/mp_image.h
@@ -166,6 +166,9 @@ void mp_image_make_writeable(struct mp_image *img);
 void mp_image_setrefp(struct mp_image **p_img, struct mp_image *new_value);
 void mp_image_unrefp(struct mp_image **p_img);
 
+void mp_image_set_size(struct mp_image *mpi, int w, int h);
+void mp_image_set_display_size(struct mp_image *mpi, int dw, int dh);
+
 struct mp_image *mp_image_new_empty(int w, int h);
 void mp_image_setfmt(mp_image_t* mpi,unsigned int out_fmt);
 void mp_image_alloc_planes(struct mp_image *mpi);