From 03e99c5cb89a1965273da2feb3908de07b6803d4 Mon Sep 17 00:00:00 2001
From: reimar <reimar@b3059339-0415-0410-9bf9-f77b7e298cf2>
Date: Sun, 22 Nov 2009 00:09:40 +0000
Subject: Make fribidi (i.e. right-to-left) support work with embedded
 subtitles.

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@29950 b3059339-0415-0410-9bf9-f77b7e298cf2
---
 subreader.c | 16 +++++++++++++---
 1 file changed, 13 insertions(+), 3 deletions(-)

diff --git a/subreader.c b/subreader.c
index e93f2ac428..adb440bebd 100644
--- a/subreader.c
+++ b/subreader.c
@@ -1148,7 +1148,13 @@ subtitle* subcp_recode (subtitle *sub)
 #endif
 
 #ifdef CONFIG_FRIBIDI
-static subtitle* sub_fribidi (subtitle *sub, int sub_utf8)
+/**
+ * Do conversion necessary for right-to-left language support via fribidi.
+ * @param sub subtitle to convert
+ * @param sub_utf8 whether the subtitle is encoded in UTF-8
+ * @param from first new subtitle, all lines before this are assumed to be already converted
+ */
+static subtitle* sub_fribidi (subtitle *sub, int sub_utf8, int from)
 {
   FriBidiChar logical[LINE_LEN+1], visual[LINE_LEN+1]; // Hopefully these two won't smash the stack
   char        *ip      = NULL, *op     = NULL;
@@ -1167,7 +1173,7 @@ static subtitle* sub_fribidi (subtitle *sub, int sub_utf8)
   }else {
     char_set_num = fribidi_parse_charset ("UTF-8");
   }
-  while (l) {
+  while (l > from) {
     ip = sub->text[--l];
     orig_len = len = strlen( ip ); // We assume that we don't use full unicode, only UTF-8 or ISO8859-x
     if(len > LINE_LEN) {
@@ -1415,7 +1421,7 @@ sub_data* sub_read_file (char *filename, float fps) {
 	if ((sub!=ERR) && (sub_utf8 & 2)) sub=subcp_recode(sub);
 #endif
 #ifdef CONFIG_FRIBIDI
-	if (sub!=ERR) sub=sub_fribidi(sub,sub_utf8);
+	if (sub!=ERR) sub=sub_fribidi(sub,sub_utf8,0);
 #endif
 	if ( sub == ERR )
 	 {
@@ -2269,6 +2275,7 @@ void sub_add_text(subtitle *sub, const char *txt, int len, double endpts) {
   int double_newline = 1; // ignore newlines at the beginning
   int i, pos;
   char *buf;
+  int orig_lines = sub->lines;
   if (sub->lines >= SUB_MAX_TEXT) return;
   pos = 0;
   buf = malloc(MAX_SUBLINE + 1);
@@ -2313,6 +2320,9 @@ 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++;
+#ifdef CONFIG_FRIBIDI
+  sub = sub_fribidi(sub, sub_utf8, orig_lines);
+#endif
 }
 
 #define MP_NOPTS_VALUE (-1LL<<63)
-- 
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