From 1781bf26f101442be06d72243e8cbeffcaa47658 Mon Sep 17 00:00:00 2001
From: Aman Gupta <aman@tmm1.net>
Date: Thu, 7 Jan 2016 13:31:09 -0800
Subject: ass_mp: add mp_ass_flush_old_events()

---
 sub/ass_mp.c | 14 ++++++++++++++
 sub/ass_mp.h |  1 +
 2 files changed, 15 insertions(+)

(limited to 'sub')

diff --git a/sub/ass_mp.c b/sub/ass_mp.c
index b30b9964de..8d40b5256a 100644
--- a/sub/ass_mp.c
+++ b/sub/ass_mp.c
@@ -163,3 +163,17 @@ ASS_Library *mp_ass_init(struct mpv_global *global, struct mp_log *log)
     talloc_free(path);
     return priv;
 }
+
+void mp_ass_flush_old_events(ASS_Track *track, long long ts)
+{
+    int n = 0;
+    for (; n < track->n_events; n++) {
+        if ((track->events[n].Start + track->events[n].Duration) >= ts)
+            break;
+        ass_free_event(track, n);
+        track->n_events--;
+    }
+    for (int i = 0; n > 0 && i < track->n_events; i++) {
+        track->events[i] = track->events[i+n];
+    }
+}
diff --git a/sub/ass_mp.h b/sub/ass_mp.h
index 98311824ab..789a53acb1 100644
--- a/sub/ass_mp.h
+++ b/sub/ass_mp.h
@@ -44,6 +44,7 @@ struct mpv_global;
 struct mp_osd_res;
 struct osd_style_opts;
 
+void mp_ass_flush_old_events(ASS_Track *track, long long ts);
 void mp_ass_set_style(ASS_Style *style, double res_y,
                       const struct osd_style_opts *opts);
 
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