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sd_lavc: extend subtitle resolution if images go outside

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Helps with broken vobsubs, which have an incorrect resolution header
set.

So we just extend the subtitle resolution to the video size, if the
video size is larger. This helps somewhat with readability, or makes
them visible at all. It should be a pretty safe change, because normally
no sub pictures are supposed to go outside of the area. It should make a
difference with broken files only.

The sample in question had a video resolution of 1888x1072, and a
subtitle resolution of 720x480. Note that always using video resolution
as subtitle resolution would break other files.
This commit is contained in:
wm4 2015-10-21 20:49:12 +02:00
parent d93a9be656
commit 1a1ac76d2a
1 changed files with 9 additions and 0 deletions
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9
sub/sd_lavc.c
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@ -276,6 +276,15 @@ static void get_bitmaps(struct sd *sd, struct mp_osd_res d, double pts,
d.ml = d.mr = d.mt = d.mb = 0;
int insize[2];
get_resolution(sd, insize);
for (int n = 0; n < res->num_parts; n++) {
struct sub_bitmap *p = &res->parts[n];
if ((p->x + p->w > insize[0] || p->y + p->h > insize[1]) &&
priv->video_params.w > insize[0] && priv->video_params.h > insize[1])
{
insize[0] = priv->video_params.w;
insize[1] = priv->video_params.h;
}
}
osd_rescale_bitmaps(res, insize[0], insize[1], d, video_par);
}