From 2c8e65329f3cabd86428d26dd0ed2fec49f38b41 Mon Sep 17 00:00:00 2001
From: eugeni <eugeni@b3059339-0415-0410-9bf9-f77b7e298cf2>
Date: Fri, 29 Feb 2008 17:25:43 +0000
Subject: Demuxer-independent functions for selecting tracks based on language.

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@26118 b3059339-0415-0410-9bf9-f77b7e298cf2
---
 libmpdemux/demuxer.c | 32 ++++++++++++++++++++++++++++++++
 libmpdemux/demuxer.h |  5 +++++
 2 files changed, 37 insertions(+)

diff --git a/libmpdemux/demuxer.c b/libmpdemux/demuxer.c
index 28388bb192..e842164d3a 100644
--- a/libmpdemux/demuxer.c
+++ b/libmpdemux/demuxer.c
@@ -1405,3 +1405,35 @@ int demuxer_set_angle(demuxer_t *demuxer, int angle) {
 
     return angle;
 }
+
+int demuxer_audio_track_by_lang(demuxer_t* d, char* lang)
+{
+    int i, len;
+    lang += strspn(lang, ",");
+    while((len = strcspn(lang, ",")) > 0) {
+        for (i=0; i < MAX_A_STREAMS; ++i) {
+            sh_audio_t* sh = d->a_streams[i];
+            if (sh && sh->lang && strncmp(sh->lang, lang, len) == 0)
+                return sh->aid;
+        }
+        lang += len;
+        lang += strspn(lang, ",");
+    }
+    return -1;
+}
+
+int demuxer_sub_track_by_lang(demuxer_t* d, char* lang)
+{
+    int i, len;
+    lang += strspn(lang, ",");
+    while((len = strcspn(lang, ",")) > 0) {
+        for (i=0; i < MAX_S_STREAMS; ++i) {
+            sh_sub_t* sh = d->s_streams[i];
+            if (sh && sh->lang && strncmp(sh->lang, lang, len) == 0)
+                return sh->sid;
+        }
+        lang += len;
+        lang += strspn(lang, ",");
+    }
+    return -1;
+}
diff --git a/libmpdemux/demuxer.h b/libmpdemux/demuxer.h
index e9cbc3984e..3ee08e846a 100644
--- a/libmpdemux/demuxer.h
+++ b/libmpdemux/demuxer.h
@@ -421,4 +421,9 @@ int demuxer_set_angle(demuxer_t *demuxer, int angle);
 /// Get number of angles.
 int demuxer_angles_count(demuxer_t *demuxer);
 
+// get the index of a track
+// lang is a comma-separated list
+int demuxer_audio_track_by_lang(demuxer_t* demuxer, char* lang);
+int demuxer_sub_track_by_lang(demuxer_t* demuxer, char* lang);
+
 #endif /* MPLAYER_DEMUXER_H */
-- 
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