1 files changed, 70 insertions, 0 deletions
diff --git a/ffmpeg1/libavformat/metadata.c b/ffmpeg1/libavformat/metadata.c
new file mode 100644
index 0000000..fc3a9d7
--- /dev/null
+++ b/ffmpeg1/libavformat/metadata.c
@@ -0,0 +1,70 @@
+/*
+ * copyright (c) 2009 Michael Niedermayer
+ *
+ * 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
+ */
+
+#include "avformat.h"
+#include "metadata.h"
+#include "libavutil/dict.h"
+#include "libavutil/avstring.h"
+
+void ff_metadata_conv(AVDictionary **pm, const AVMetadataConv *d_conv,
+                                       const AVMetadataConv *s_conv)
+{
+    /* TODO: use binary search to look up the two conversion tables
+       if the tables are getting big enough that it would matter speed wise */
+    const AVMetadataConv *sc, *dc;
+    AVDictionaryEntry *mtag = NULL;
+    AVDictionary *dst = NULL;
+    const char *key;
+
+    if (d_conv == s_conv)
+        return;
+
+    while ((mtag = av_dict_get(*pm, "", mtag, AV_DICT_IGNORE_SUFFIX))) {
+        key = mtag->key;
+        if (s_conv)
+            for (sc=s_conv; sc->native; sc++)
+                if (!av_strcasecmp(key, sc->native)) {
+                    key = sc->generic;
+                    break;
+                }
+        if (d_conv)
+            for (dc=d_conv; dc->native; dc++)
+                if (!av_strcasecmp(key, dc->generic)) {
+                    key = dc->native;
+                    break;
+                }
+        av_dict_set(&dst, key, mtag->value, 0);
+    }
+    av_dict_free(pm);
+    *pm = dst;
+}
+
+void ff_metadata_conv_ctx(AVFormatContext *ctx, const AVMetadataConv *d_conv,
+                                                const AVMetadataConv *s_conv)
+{
+    int i;
+    ff_metadata_conv(&ctx->metadata, d_conv, s_conv);
+    for (i=0; i<ctx->nb_streams ; i++)
+        ff_metadata_conv(&ctx->streams [i]->metadata, d_conv, s_conv);
+    for (i=0; i<ctx->nb_chapters; i++)
+        ff_metadata_conv(&ctx->chapters[i]->metadata, d_conv, s_conv);
+    for (i=0; i<ctx->nb_programs; i++)
+        ff_metadata_conv(&ctx->programs[i]->metadata, d_conv, s_conv);
+}