From 0461f5e669acf1a90af7a8636a72ede9f1c5951a Mon Sep 17 00:00:00 2001
From: mplayer-svn <svn@mplayerhq.hu>
Date: Sun, 15 Jan 2012 12:08:26 +0000
Subject: subreader: eliminate duplicate subtitle lines

Eliminate duplicate subtitle lines which will most likely
be artefacts from ASS effects.

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@34574 b3059339-0415-0410-9bf9-f77b7e298cf2
Author: reimar
---
 sub/subreader.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'sub')

diff --git a/sub/subreader.c b/sub/subreader.c
index bd1e9e01d1..dc40b57c62 100644
--- a/sub/subreader.c
+++ b/sub/subreader.c
@@ -1838,6 +1838,16 @@ void sub_add_text(subtitle *sub, const char *txt, int len, double endpts) {
   if (sub->lines < SUB_MAX_TEXT &&
       strlen(sub->text[sub->lines]))
     sub->lines++;
+  if (sub->lines > 1 &&
+      strcmp(sub->text[sub->lines-1], sub->text[sub->lines-2]) == 0) {
+    // remove duplicate lines. These can happen with some
+    // "clever" ASS effects.
+    sub->lines--;
+    sub->endpts[sub->lines-1] =
+      FFMAX(sub->endpts[sub->lines-1],
+            sub->endpts[sub->lines]);
+    free(sub->text[sub->lines]);
+  }
 }
 
 /**
-- 
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