Move metadata API from avcodec to avformat.

Originally committed as revision 16425 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/Makefile

@@ -14,7 +14,6 @@ OBJS = allcodecs.o                                                      \
        faanidct.o                                                       \
        imgconvert.o                                                     \
        jrevdct.o                                                        \
-       metadata.o                                                       \
        opt.o                                                            \
        parser.o                                                         \
        raw.o                                                            \

libavcodec/avcodec.h

@@ -401,50 +401,6 @@ enum SampleFormat {
 #define FF_MIN_BUFFER_SIZE 16384
 
 
-/*
- * public Metadata API.
- * Important concepts, to keep in mind
- * 1. keys are unique, there are never 2 tags with equal keys, this is also
- *    meant semantically that is a demuxer should not knowingly produce
- *    several keys that are litterally different but semantically identical,
- *    like key=Author5, key=Author6.
- *    All authors have to be placed in the same tag for the case of Authors.
- * 2. Metadata is flat, there are no subtags, if you for whatever obscene
- *    reason want to store the email address of the child of producer alice
- *    and actor bob, that could have key=alice_and_bobs_childs_email_address.
- * 3. A tag whichs value is translated has the ISO 639 3-letter language code
- *    with a '-' between appended. So for example Author-ger=Michael, Author-eng=Mike
- *    the original/default language is in the unqualified "Author"
- *    A demuxer should set a default if it sets any translated tag.
- */
-
-#define AV_METADATA_IGNORE_CASE     1
-#define AV_METADATA_IGNORE_SUFFIX   2
-
-typedef struct {
-    char *key;
-    char *value;
-}AVMetaDataTag;
-
-struct AVMetaData;
-
-/**
- * gets a metadata element with matching key.
- * @param prev set to the previous matching element to find the next.
- * @param flags allows case as well as suffix insensitive comparissions.
- * @return found tag or NULL, changing key or value leads to undefined behavior.
- */
-AVMetaDataTag *
-av_metadata_get(struct AVMetaData *m, const char *key, const AVMetaDataTag *prev, int flags);
-
-/**
- * sets the given tag in m, overwriting an existing tag.
- * @param tag tag to add to m, key and value will be av_strduped.
- * @return >= 0 if success otherwise error code that is <0.
- */
-int av_metadata_set(struct AVMetaData **m, AVMetaDataTag tag);
-
-
 /**
  * motion estimation type.
  */

libavformat/Makefile

@@ -5,7 +5,7 @@ FFLIBS = avcodec avutil
 
 HEADERS = avformat.h avio.h rtsp.h rtspcodes.h
 
-OBJS = allformats.o cutils.o os_support.o sdp.o utils.o
+OBJS = allformats.o cutils.o metadata.o os_support.o sdp.o utils.o
 
 # muxers/demuxers
 OBJS-$(CONFIG_AAC_DEMUXER)               += raw.o

libavformat/avformat.h

@@ -46,6 +46,51 @@ unsigned avformat_version(void);
 
 #include "avio.h"
 
+
+/*
+ * public Metadata API.
+ * Important concepts, to keep in mind
+ * 1. keys are unique, there are never 2 tags with equal keys, this is also
+ *    meant semantically that is a demuxer should not knowingly produce
+ *    several keys that are litterally different but semantically identical,
+ *    like key=Author5, key=Author6.
+ *    All authors have to be placed in the same tag for the case of Authors.
+ * 2. Metadata is flat, there are no subtags, if you for whatever obscene
+ *    reason want to store the email address of the child of producer alice
+ *    and actor bob, that could have key=alice_and_bobs_childs_email_address.
+ * 3. A tag whichs value is translated has the ISO 639 3-letter language code
+ *    with a '-' between appended. So for example Author-ger=Michael, Author-eng=Mike
+ *    the original/default language is in the unqualified "Author"
+ *    A demuxer should set a default if it sets any translated tag.
+ */
+
+#define AV_METADATA_IGNORE_CASE     1
+#define AV_METADATA_IGNORE_SUFFIX   2
+
+typedef struct {
+    char *key;
+    char *value;
+}AVMetaDataTag;
+
+struct AVMetaData;
+
+/**
+ * gets a metadata element with matching key.
+ * @param prev set to the previous matching element to find the next.
+ * @param flags allows case as well as suffix insensitive comparissions.
+ * @return found tag or NULL, changing key or value leads to undefined behavior.
+ */
+AVMetaDataTag *
+av_metadata_get(struct AVMetaData *m, const char *key, const AVMetaDataTag *prev, int flags);
+
+/**
+ * sets the given tag in m, overwriting an existing tag.
+ * @param tag tag to add to m, key and value will be av_strduped.
+ * @return >= 0 if success otherwise error code that is <0.
+ */
+int av_metadata_set(struct AVMetaData **m, AVMetaDataTag tag);
+
+
 /* packet functions */
 
 typedef struct AVPacket {

libavcodec/metadata.h → libavformat/metadata.h

@@ -18,21 +18,21 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
-#ifndef AVCODEC_METADATA_H
-#define AVCODEC_METADATA_H
+#ifndef AVFORMAT_METADATA_H
+#define AVFORMAT_METADATA_H
 
 /**
  * @file metadata.h
  * internal metadata API header
- * see avcodec.h or the public API!
+ * see avformat.h or the public API!
  */
 
 
-#include "avcodec.h"
+#include "avformat.h"
 
 struct AVMetaData{
     int count;
     AVMetaDataTag *elems;
 };
 
-#endif /* AVCODEC_METADATA_H */
+#endif /* AVFORMAT_METADATA_H */