[gstreamer-bugs] [Bug 512333] [gstvorbistag] Retrieve Ogg/Vorbis cover art as image metadata

[GStreamer (bugzilla.gnome.org)]

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  GStreamer | gst-plugins-base | Ver: HEAD CVS




------- Comment #1 from John Millikin  2008-01-27 05:56 UTC -------
Created an attachment (id=103801)
 --> (http://bugzilla.gnome.org/attachment.cgi?id=103801&action=view)
Extract Ogg/Vorbis cover art metadata

Define two new libgst utility functions, gst_normalize_image_mime_type and
gst_add_image_tag. Both functions are based on code found in the ID3 and FLAC
demuxers[1]. gst_normalize_image_mime_type is used to convert from the various
formats found to the standard "image/*" form. gst_add_image_tag accepts as
parameters the raw MIME-type, image data, and image type. It constructs a
GstBuffer and adds it to a GstTagList.

Also define a function gst_vorbis_extract_cover_art, which will be called after
all tags have been read from a Vorbis comment buffer. If the buffer contained
COVERART comments, the last such comment will be used to construct the image
tag buffer.

[1] A second patch shall be attached, to refactor the ID3 and FLAC demuxers to
use the new utility functions.


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