decoder/ffmpeg: convert to C++

src/decoder/FfmpegMetaData.hxx

@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2003-2013 The Music Player Daemon Project
+ * http://www.musicpd.org
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#ifndef MPD_FFMPEG_METADATA_HXX
+#define MPD_FFMPEG_METADATA_HXX
+
+extern "C" {
+#include <libavformat/avformat.h>
+#include <libavutil/avutil.h>
+#if LIBAVUTIL_VERSION_INT >= AV_VERSION_INT(51,5,0)
+#include <libavutil/dict.h>
+#endif
+}
+
+#if LIBAVFORMAT_VERSION_INT < AV_VERSION_INT(53,1,0)
+#define AVDictionary AVMetadata
+#define AVDictionaryEntry AVMetadataTag
+#define av_dict_get av_metadata_get
+#endif
+
+struct tag_handler;
+
+void
+ffmpeg_scan_dictionary(AVDictionary *dict,
+		       const struct tag_handler *handler, void *handler_ctx);
+
+#endif