video/filter: change filter API, use refcounting, remove filter DR

Change the entire filter API to use reference counted images instead
of vf_get_image().

Remove filter "direct rendering". This was useful for vf_expand and (in
rare cases) vf_sub: DR allowed these filters to pass a cropped image to
the filters before them. Then, on filtering, the image was "uncropped",
so that black bars could be added around the image without copying. This
means that in some cases, vf_expand will be slower (-vf gradfun,expand
for example).

Note that another form of DR used for in-place filters has been replaced
by simpler logic. Instead of trying to do DR, filters can check if the
image is writeable (with mp_image_is_writeable()), and do true in-place
if that's the case. This affects filters like vf_gradfun and vf_sub.

Everything has to support strides now. If something doesn't, making a
copy of the image data is required.

1 files changed, 2 insertions, 2 deletions

diff --git a/video/out/vo.h b/video/out/vo.h
index 7b929f985d..e883293326 100644
--- a/video/out/vo.h
+++ b/video/out/vo.h
@@ -53,7 +53,7 @@ enum mp_voctrl {
 
     /* for vdpau hardware decoding */
     VOCTRL_HWDEC_DECODER_RENDER,        // pointer to hw state
-    VOCTRL_HWDEC_GET_SURFACE,           // struct mp_image
+    VOCTRL_HWDEC_ALLOC_SURFACE,         // struct mp_image**
 
     VOCTRL_NEWFRAME,
     VOCTRL_SKIPFRAME,
@@ -285,7 +285,7 @@ int vo_config(struct vo *vo, uint32_t width, uint32_t height,
 void list_video_out(void);
 
 int vo_control(struct vo *vo, uint32_t request, void *data);
-int vo_draw_image(struct vo *vo, struct mp_image *mpi, double pts);
+int vo_draw_image(struct vo *vo, struct mp_image *mpi);
 int vo_redraw_frame(struct vo *vo);
 int vo_get_buffered_frame(struct vo *vo, bool eof);
 void vo_skip_frame(struct vo *vo);