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| author | Grigori Goronzy <greg@blackbox> | 2012-10-01 19:33:36 +0200 |
|---|---|---|
| committer | Grigori Goronzy <greg@blackbox> | 2012-10-01 19:33:36 +0200 |
| commit | 362614163207ed0cf775e591d4ded17a3170d33e (patch) | |
| tree | f5ac4498a1c6b3e4f9d27aa2c183b7fe3ab0c569 /libass/ass_render.c | |
| parent | 840ce4c2d9381e340c3239d104933fea85fff3e5 (diff) | |
| download | libass-362614163207ed0cf775e591d4ded17a3170d33e.tar.bz2 libass-362614163207ed0cf775e591d4ded17a3170d33e.tar.xz | |
Fix change detection in a rare case
If an empty track is passed to ass_render_frame, always set the
change detection value to 2 (content and positions changed). This is
acceptable in both the case that the previous call resulted in images
(obviously) and in the case that the previous call resulted in no
images (in that case the change detection result doesn't actually
matter).
Diffstat (limited to 'libass/ass_render.c')
| -rw-r--r-- | libass/ass_render.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/libass/ass_render.c b/libass/ass_render.c index b11c681..980dac3 100644 --- a/libass/ass_render.c +++ b/libass/ass_render.c @@ -2525,8 +2525,12 @@ ASS_Image *ass_render_frame(ASS_Renderer *priv, ASS_Track *track, // init frame rc = ass_start_frame(priv, track, now); - if (rc != 0) + if (rc != 0) { + if (detect_change) { + *detect_change = 2; + } return 0; + } // render events separately cnt = 0; |