subsync

cli tool to synchronize srt subtitles automatically
git clone git://git.2f30.org/subsync.git
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commit 896bc9fb50d551ac1333975ddfce391eb6dd825b
parent 940391cfe43ca8e71791de6ca68152eee3b48f2b
Author: oblique <psyberbits@gmail.com>
Date:   Sat Apr 13 09:13:59 +0300

add more comments

Diffstat:
subsync.go | 16++++++++++++++++
1 file changed, 16 insertions(+), 0 deletions(-)
diff --git a/subsync.go b/subsync.go @@ -189,11 +189,27 @@ func sync_subs(subs *list.List, synced_first_ms uint, synced_last_ms uint) { desynced_first_ms := subs.Front().Value.(*subtitle).start desynced_last_ms := subs.Back().Value.(*subtitle).start + /* m = (y2 - y1) / (x2 - x1) + * m: slope + * y2: synced_last_ms + * y1: synced_first_ms + * x2: desynced_last_ms + * x1: desynced_first_ms */ slope = float64(synced_last_ms - synced_first_ms) / float64(desynced_last_ms - desynced_first_ms) + /* b = y - mx + * b: yint + * y: synced_last_ms + * m: slope + * x: desynced_last_ms */ yint = float64(synced_last_ms) - slope * float64(desynced_last_ms) for e := subs.Front(); e != nil; e = e.Next() { sub := e.Value.(*subtitle) + /* y = mx + b + * y: sub.start and sub.end + * m: slope + * x: sub.start and sub.end + * b: yint */ sub.start = uint(roundFloat64(slope * float64(sub.start) + yint)) sub.end = uint(roundFloat64(slope * float64(sub.end) + yint)) }