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sub: implement "sub-seek 0"

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For bitmap subs, implement it properly. For libass, you need newest git
master.

Fixes #2791.
This commit is contained in:
wm4 2016-02-04 22:44:18 +01:00
parent 6cbd7d6390
commit 155f7fac9d
2 changed files with 13 additions and 6 deletions
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2
player/command.c
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@ -4588,7 +4588,7 @@ int run_command(struct MPContext *mpctx, struct mp_cmd *cmd, struct mpv_node *re
// frame which actually shows the sub first (because video
// frame PTS and sub PTS rarely match exactly). Add some
// rounding for the mess of it.
a[0] += 0.01 * (a[1] > 0 ? 1 : -1);
a[0] += 0.01 * (a[1] >= 0 ? 1 : -1);
mark_seek(mpctx);
queue_seek(mpctx, MPSEEK_RELATIVE, a[0], MPSEEK_EXACT, false);
set_osd_function(mpctx, (a[0] > 0) ? OSD_FFW : OSD_REW);

17
sub/sd_lavc.c
View File

@ -398,15 +398,15 @@ static double step_sub(struct sd *sd, double now, int movement)
struct sd_lavc_priv *priv = sd->priv;
int best = -1;
double target = now;
int direction = movement > 0 ? 1 : -1;
int direction = (movement > 0 ? 1 : -1) * !!movement;
if (movement == 0 || priv->num_seekpoints == 0)
if (priv->num_seekpoints == 0)
return MP_NOPTS_VALUE;
qsort(priv->seekpoints, priv->num_seekpoints, sizeof(priv->seekpoints[0]),
compare_seekpoint);
while (movement) {
do {
int closest = -1;
double closest_time = 0;
for (int i = 0; i < priv->num_seekpoints; i++) {
@ -420,13 +420,20 @@ static double step_sub(struct sd *sd, double now, int movement)
closest_time = end;
}
}
} else {
} else if (direction > 0) {
if (start > target) {
if (closest < 0 || start < closest_time) {
closest = i;
closest_time = start;
}
}
} else {
if (start < target) {
if (closest < 0 || start >= closest_time) {
closest = i;
closest_time = start;
}
}
}
}
if (closest < 0)
@ -434,7 +441,7 @@ static double step_sub(struct sd *sd, double now, int movement)
target = closest_time + direction;
best = closest;
movement -= direction;
}
} while (movement);
return best < 0 ? 0 : priv->seekpoints[best].pts - now;
}