decoder/ffmpeg: move code to ffmpeg_metadata.c

1 files changed, 65 insertions, 0 deletions

diff --git a/src/decoder/ffmpeg_metadata.c b/src/decoder/ffmpeg_metadata.c
new file mode 100644
index 000000000..ce943f3dd
--- /dev/null
+++ b/src/decoder/ffmpeg_metadata.c
@@ -0,0 +1,65 @@
+/*
+ * Copyright (C) 2003-2012 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.
+ */
+
+#include "config.h"
+#include "ffmpeg_metadata.h"
+#include "tag.h"
+
+#undef G_LOG_DOMAIN
+#define G_LOG_DOMAIN "ffmpeg"
+
+typedef struct ffmpeg_tag_map {
+	enum tag_type type;
+	const char *name;
+} ffmpeg_tag_map;
+
+static const ffmpeg_tag_map ffmpeg_tag_maps[] = {
+#if LIBAVFORMAT_VERSION_INT < ((52<<16)+(50<<8))
+	{ TAG_ARTIST,            "author" },
+	{ TAG_DATE,              "year" },
+#endif
+	{ TAG_ARTIST_SORT,       "author-sort" },
+	{ TAG_ALBUM_ARTIST,      "album_artist" },
+	{ TAG_ALBUM_ARTIST_SORT, "album_artist-sort" },
+
+	/* sentinel */
+	{ TAG_NUM_OF_ITEM_TYPES, NULL }
+};
+
+static void
+ffmpeg_copy_metadata(struct tag *tag, enum tag_type type,
+		     AVDictionary *m, const char *name)
+{
+	AVDictionaryEntry *mt = NULL;
+
+	while ((mt = av_dict_get(m, name, mt, 0)) != NULL)
+		tag_add_item(tag, type, mt->value);
+}
+
+void
+ffmpeg_copy_dictionary(struct tag *tag, AVDictionary *dict)
+{
+	for (unsigned i = 0; i < TAG_NUM_OF_ITEM_TYPES; ++i)
+		ffmpeg_copy_metadata(tag, i,
+				     dict, tag_item_names[i]);
+
+	for (const struct ffmpeg_tag_map *i = ffmpeg_tag_maps;
+	     i->name != NULL; ++i)
+		ffmpeg_copy_metadata(tag, i->type, dict, i->name);
+}