avformat/asf: Factor common code out

Both functions to read attached pictures coincide since
e83f27a21a6d2f602b55e541ef66e365400e9827 (save for some log messages
in case av_dict_set failed).

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

1 files changed, 10 insertions, 0 deletions

diff --git a/libavformat/asf.h b/libavformat/asf.h
index bce820efae..01cc4f7a46 100644
--- a/libavformat/asf.h
+++ b/libavformat/asf.h
@@ -104,6 +104,16 @@ extern const ff_asf_guid ff_asf_mutex_language;
 
 extern const AVMetadataConv ff_asf_metadata_conv[];
 
+/**
+ * Handles both attached pictures as well as id3 tags.
+ *
+ * @return Returns < 0 on error, 1 if the type of the byte array
+ *         is unsupported by this function and 0 otherwise.
+ */
+int ff_asf_handle_byte_array(AVFormatContext *s, const char *name,
+                             int val_len);
+
+
 #define ASF_PACKET_FLAG_ERROR_CORRECTION_PRESENT 0x80 //1000 0000