Add avlanguage helpers in libavformat.

Patch by Cyril Comparon: standard_gmail_full_name_address
Original thread: Suggestion for a centralized language-tag facility in libavformat
Date: 04/10/2009 07:33 PM


git-svn-id: file:///var/local/repositories/ffmpeg/trunk@18698 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

Changelog

@@ -14,6 +14,7 @@ version <next>:
 - RTP packetization of AMR
 - RTP depacketization of Vorbis
 - Cook multichannel decoding support
+- introduced avlanguage helpers in libavformat
 
 
 version 0.5:

libavformat/avlanguage.h

+/*
+ * Cyril Comparon, Larbi Joubala, Resonate-MP4 2009
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVFORMAT_AVLANGUAGE_H
+#define AVFORMAT_AVLANGUAGE_H
+
+/**
+ * Known language codespaces
+ */
+enum AV_LangCodespace {
+    AV_LANG_ISO639_2_BIBL, /** 3-char bibliographic language codes as per ISO-IEC 639-2 */
+    AV_LANG_ISO639_2_TERM, /** 3-char terminologic language codes as per ISO-IEC 639-2 */
+    AV_LANG_ISO639_1       /** 2-char code of language as per ISO/IEC 639-1 */
+};
+
+/**
+ * Converts a language code to a target codespace. The source codespace is guessed.
+ * Returns NULL if the provided lang is null or invalid.
+ */
+const char *av_convertLangTo(const char *lang, enum AV_LangCodespace targetCodespace);
+
+#endif /* AVFORMAT_AVLANGUAGE_H */