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author | wm4 <wm4@nowhere> | 2012-12-22 17:17:43 +0100 |
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committer | wm4 <wm4@nowhere> | 2013-01-13 20:04:12 +0100 |
commit | 1c65428d6f70f05333ecc8284e3f235c679fff26 (patch) | |
tree | 6939a94a824aba4a8929136dc906cdc1d5b5de6b /sub/sub.h | |
parent | 233cc15be99a94891bfc62bbb79af38ee192d9ff (diff) | |
download | mpv-1c65428d6f70f05333ecc8284e3f235c679fff26.tar.bz2 mpv-1c65428d6f70f05333ecc8284e3f235c679fff26.tar.xz |
sub: do not copy the target image if there is no OSD/subs
It's not easy to tell whether the OSD/subs are empty, or if something is
drawn. In general you have to use osd_draw() with a custom callback. If
nothing is visible, the callback is never invoked. (The actual reason
why this is so "hard" is the implementation of osd_libass.c, which
doesn't allow separating rendering and drawing of OSD elements, because
all OSD elements share the same ASS_Renderer.)
To simplify avoiding copies, make osd_draw_on_image() instead of the
caller use mp_image_make_writeable(). Introduce osd_draw_on_image_p(),
which works like osd_draw_on_image(), but gets the new image allocation
from an image pool. This is supposed to be an optimization, because it
reduces the frequency of large allocations/deallocations for image data.
The result of this is that the frequency of copies needed in conjunction
with vf_sub, screenshots, and vo_lavc (encoding) should be reduced.
vf_sub now always does true pass-through if no subs are shown.
Drop the pts check from vf_sub. This didn't make much sense.
Diffstat (limited to 'sub/sub.h')
-rw-r--r-- | sub/sub.h | 5 |
1 files changed, 5 insertions, 0 deletions
@@ -222,6 +222,11 @@ struct mp_image; bool osd_draw_on_image(struct osd_state *osd, struct mp_osd_res res, double video_pts, int draw_flags, struct mp_image *dest); +struct mp_image_pool; +void osd_draw_on_image_p(struct osd_state *osd, struct mp_osd_res res, + double video_pts, int draw_flags, + struct mp_image_pool *pool, struct mp_image *dest); + struct mp_draw_sub_backup; void osd_draw_on_image_bk(struct osd_state *osd, struct mp_osd_res res, double video_pts, int draw_flags, |