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5a48fb7cdb
But for backwards compatibility keep reading it from the caps and only use the info struct if the caps don't contain the image-type.
844 lines
26 KiB
C
844 lines
26 KiB
C
/* GStreamer
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* Copyright (C) 2003 Benjamin Otte <in7y118@public.uni-hamburg.de>
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*
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* gstvorbistag.c: library for reading / modifying vorbis tags
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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/**
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* SECTION:gsttagvorbis
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* @short_description: tag mappings and support functions for plugins
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* dealing with vorbiscomments
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* @see_also: #GstTagList
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*
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* <refsect2>
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* <para>
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* Contains various utility functions for plugins to parse or create
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* vorbiscomments and map them to and from #GstTagList<!-- -->s.
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* </para>
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* </refsect2>
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <gst/gsttagsetter.h>
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#include <gst/base/gstbytereader.h>
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#include <gst/base/gstbytewriter.h>
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#include "gsttageditingprivate.h"
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#include <stdlib.h>
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#include <string.h>
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/*
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* see http://xiph.org/ogg/vorbis/doc/v-comment.html
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*/
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static const GstTagEntryMatch tag_matches[] = {
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{GST_TAG_TITLE, "TITLE"},
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{GST_TAG_VERSION, "VERSION"},
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{GST_TAG_ALBUM, "ALBUM"},
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{GST_TAG_TRACK_NUMBER, "TRACKNUMBER"},
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{GST_TAG_ALBUM_VOLUME_NUMBER, "DISCNUMBER"},
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{GST_TAG_TRACK_COUNT, "TRACKTOTAL"},
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{GST_TAG_TRACK_COUNT, "TOTALTRACKS"}, /* old / non-standard */
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{GST_TAG_ALBUM_VOLUME_COUNT, "DISCTOTAL"},
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{GST_TAG_ALBUM_VOLUME_COUNT, "TOTALDISCS"}, /* old / non-standard */
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{GST_TAG_ARTIST, "ARTIST"},
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{GST_TAG_PERFORMER, "PERFORMER"},
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{GST_TAG_COMPOSER, "COMPOSER"},
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{GST_TAG_COPYRIGHT, "COPYRIGHT"},
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{GST_TAG_LICENSE, "LICENSE"},
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{GST_TAG_LICENSE_URI, "LICENSE"},
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{GST_TAG_GEO_LOCATION_NAME, "LOCATION"},
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{GST_TAG_ORGANIZATION, "ORGANIZATION"},
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{GST_TAG_DESCRIPTION, "DESCRIPTION"},
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{GST_TAG_GENRE, "GENRE"},
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{GST_TAG_DATE_TIME, "DATE"},
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{GST_TAG_CONTACT, "CONTACT"},
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{GST_TAG_ISRC, "ISRC"},
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{GST_TAG_COMMENT, "COMMENT"},
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{GST_TAG_TRACK_GAIN, "REPLAYGAIN_TRACK_GAIN"},
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{GST_TAG_TRACK_PEAK, "REPLAYGAIN_TRACK_PEAK"},
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{GST_TAG_ALBUM_GAIN, "REPLAYGAIN_ALBUM_GAIN"},
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{GST_TAG_ALBUM_PEAK, "REPLAYGAIN_ALBUM_PEAK"},
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{GST_TAG_REFERENCE_LEVEL, "REPLAYGAIN_REFERENCE_LOUDNESS"},
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{GST_TAG_MUSICBRAINZ_TRACKID, "MUSICBRAINZ_TRACKID"},
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{GST_TAG_MUSICBRAINZ_ARTISTID, "MUSICBRAINZ_ARTISTID"},
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{GST_TAG_MUSICBRAINZ_ALBUMID, "MUSICBRAINZ_ALBUMID"},
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{GST_TAG_MUSICBRAINZ_ALBUMARTISTID, "MUSICBRAINZ_ALBUMARTISTID"},
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{GST_TAG_MUSICBRAINZ_TRMID, "MUSICBRAINZ_TRMID"},
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{GST_TAG_ARTIST_SORTNAME, "ARTISTSORT"},
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{GST_TAG_ARTIST_SORTNAME, "ARTISTSORTORDER"},
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{GST_TAG_ARTIST_SORTNAME, "MUSICBRAINZ_SORTNAME"},
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{GST_TAG_ALBUM_SORTNAME, "ALBUMSORT"},
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{GST_TAG_ALBUM_SORTNAME, "ALBUMSORTORDER"},
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{GST_TAG_TITLE_SORTNAME, "TITLESORT"},
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{GST_TAG_TITLE_SORTNAME, "TITLESORTORDER"},
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{GST_TAG_ALBUM_ARTIST, "ALBUMARTIST"},
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{GST_TAG_ALBUM_ARTIST, "ALBUM ARTIST"},
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{GST_TAG_ALBUM_ARTIST_SORTNAME, "ALBUMARTISTSORT"},
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{GST_TAG_ALBUM_ARTIST_SORTNAME, "ALBUMARTISTSORTORDER"},
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{GST_TAG_LANGUAGE_CODE, "LANGUAGE"},
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{GST_TAG_CDDA_MUSICBRAINZ_DISCID, "MUSICBRAINZ_DISCID"},
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{GST_TAG_CDDA_CDDB_DISCID, "DISCID"},
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/* For the apparent de-facto standard for coverart in vorbis comments, see:
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* http://www.hydrogenaudio.org/forums/lofiversion/index.php/t48386.html */
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{GST_TAG_PREVIEW_IMAGE, "COVERART"},
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/* some evidence that "BPM" is used elsewhere:
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* http://mail.kde.org/pipermail/amarok/2006-May/000090.html
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*/
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{GST_TAG_BEATS_PER_MINUTE, "BPM"},
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/* What GStreamer calls encoder ("encoder used to encode this stream") is
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stored in the vendor string in Vorbis/Theora/Kate and possibly others.
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The Vorbis comment packet used in those streams uses ENCODER as the name
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of the encoding program, which GStreamer calls application-name. */
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{GST_TAG_APPLICATION_NAME, "ENCODER"},
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{NULL, NULL}
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};
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/**
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* gst_tag_from_vorbis_tag:
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* @vorbis_tag: vorbiscomment tag to convert to GStreamer tag
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*
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* Looks up the GStreamer tag for a vorbiscomment tag.
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*
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* Returns: The corresponding GStreamer tag or NULL if none exists.
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*/
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const gchar *
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gst_tag_from_vorbis_tag (const gchar * vorbis_tag)
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{
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int i = 0;
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gchar *real_vorbis_tag;
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g_return_val_if_fail (vorbis_tag != NULL, NULL);
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gst_tag_register_musicbrainz_tags ();
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real_vorbis_tag = g_ascii_strup (vorbis_tag, -1);
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while (tag_matches[i].gstreamer_tag != NULL) {
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if (strcmp (real_vorbis_tag, tag_matches[i].original_tag) == 0) {
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break;
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}
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i++;
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}
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g_free (real_vorbis_tag);
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return tag_matches[i].gstreamer_tag;
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}
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/**
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* gst_tag_to_vorbis_tag:
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* @gst_tag: GStreamer tag to convert to vorbiscomment tag
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*
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* Looks up the vorbiscomment tag for a GStreamer tag.
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*
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* Returns: The corresponding vorbiscomment tag or NULL if none exists.
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*/
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const gchar *
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gst_tag_to_vorbis_tag (const gchar * gst_tag)
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{
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int i = 0;
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g_return_val_if_fail (gst_tag != NULL, NULL);
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gst_tag_register_musicbrainz_tags ();
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while (tag_matches[i].gstreamer_tag != NULL) {
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if (strcmp (gst_tag, tag_matches[i].gstreamer_tag) == 0) {
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return tag_matches[i].original_tag;
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}
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i++;
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}
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return NULL;
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}
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/**
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* gst_vorbis_tag_add:
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* @list: a #GstTagList
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* @tag: a vorbiscomment tag string (key in key=value), must be valid UTF-8
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* @value: a vorbiscomment value string (value in key=value), must be valid UTF-8
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*
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* Convenience function using gst_tag_from_vorbis_tag(), parsing
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* a vorbis comment string into the right type and adding it to the
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* given taglist @list.
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*
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* Unknown vorbiscomment tags will be added to the tag list in form
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* of a #GST_TAG_EXTENDED_COMMENT.
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*/
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void
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gst_vorbis_tag_add (GstTagList * list, const gchar * tag, const gchar * value)
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{
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const gchar *gst_tag;
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GType tag_type;
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g_return_if_fail (list != NULL);
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g_return_if_fail (tag != NULL);
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g_return_if_fail (value != NULL);
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g_return_if_fail (g_utf8_validate (tag, -1, NULL));
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g_return_if_fail (g_utf8_validate (value, -1, NULL));
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g_return_if_fail (strchr (tag, '=') == NULL);
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gst_tag = gst_tag_from_vorbis_tag (tag);
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if (gst_tag == NULL) {
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gchar *ext_comment;
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ext_comment = g_strdup_printf ("%s=%s", tag, value);
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gst_tag_list_add (list, GST_TAG_MERGE_APPEND, GST_TAG_EXTENDED_COMMENT,
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ext_comment, NULL);
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g_free (ext_comment);
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return;
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}
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tag_type = gst_tag_get_type (gst_tag);
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switch (tag_type) {
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case G_TYPE_UINT:{
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guint tmp;
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gchar *check;
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gboolean is_track_number_tag;
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gboolean is_disc_number_tag;
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is_track_number_tag = (strcmp (gst_tag, GST_TAG_TRACK_NUMBER) == 0);
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is_disc_number_tag = (strcmp (gst_tag, GST_TAG_ALBUM_VOLUME_NUMBER) == 0);
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tmp = strtoul (value, &check, 10);
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if (*check == '/' && (is_track_number_tag || is_disc_number_tag)) {
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guint count;
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check++;
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count = strtoul (check, &check, 10);
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if (*check != '\0' || count == 0)
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break;
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if (is_track_number_tag) {
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gst_tag_list_add (list, GST_TAG_MERGE_APPEND, GST_TAG_TRACK_COUNT,
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count, NULL);
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} else {
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gst_tag_list_add (list, GST_TAG_MERGE_APPEND,
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GST_TAG_ALBUM_VOLUME_COUNT, count, NULL);
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}
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}
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if (*check == '\0') {
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gst_tag_list_add (list, GST_TAG_MERGE_APPEND, gst_tag, tmp, NULL);
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}
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break;
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}
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case G_TYPE_STRING:{
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gchar *valid = NULL;
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/* specialcase for language code */
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if (strcmp (tag, "LANGUAGE") == 0) {
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const gchar *s = strchr (value, '[');
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/* Accept both ISO-639-1 and ISO-639-2 codes */
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if (s && strchr (s, ']') == s + 4) {
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valid = g_strndup (s + 1, 3);
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} else if (s && strchr (s, ']') == s + 3) {
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valid = g_strndup (s + 1, 2);
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} else if (strlen (value) != 2 && strlen (value) != 3) {
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GST_WARNING ("doesn't contain an ISO-639 language code: %s", value);
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}
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} else if (strcmp (tag, "LICENSE") == 0) {
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/* license tags in vorbis comments must contain an URI representing
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* the license and nothing more, at least according to:
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* http://wiki.xiph.org/index.php/LICENSE_and_COPYRIGHT_tags_on_Vorbis_Comments */
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if (value && gst_uri_is_valid (value))
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gst_tag = GST_TAG_LICENSE_URI;
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}
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if (!valid) {
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valid = g_strdup (value);
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}
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gst_tag_list_add (list, GST_TAG_MERGE_APPEND, gst_tag, valid, NULL);
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g_free (valid);
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break;
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}
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case G_TYPE_DOUBLE:{
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gchar *c;
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c = g_strdup (value);
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g_strdelimit (c, ",", '.');
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gst_tag_list_add (list, GST_TAG_MERGE_APPEND, gst_tag,
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g_strtod (c, NULL), NULL);
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g_free (c);
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break;
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}
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default:{
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if (tag_type == GST_TYPE_DATE_TIME) {
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GstDateTime *datetime;
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datetime = gst_date_time_new_from_iso8601_string (value);
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if (datetime) {
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gst_tag_list_add (list, GST_TAG_MERGE_APPEND, gst_tag, datetime,
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NULL);
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gst_date_time_unref (datetime);
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} else {
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GST_WARNING ("could not parse datetime string '%s'", value);
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}
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} else {
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GST_WARNING ("Unhandled tag of type '%s' (%d)",
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g_type_name (tag_type), (gint) tag_type);
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}
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break;
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}
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}
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}
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static void
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gst_vorbis_tag_add_coverart (GstTagList * tags, gchar * img_data_base64,
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gint base64_len)
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{
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GstSample *img;
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gsize img_len;
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if (base64_len < 2)
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goto not_enough_data;
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/* img_data_base64 points to a temporary copy of the base64 encoded data, so
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* it's safe to do inpace decoding here
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*/
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g_base64_decode_inplace (img_data_base64, &img_len);
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if (img_len == 0)
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goto decode_failed;
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img =
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gst_tag_image_data_to_image_sample ((const guint8 *) img_data_base64,
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img_len, GST_TAG_IMAGE_TYPE_NONE);
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if (img == NULL)
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goto convert_failed;
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gst_tag_list_add (tags, GST_TAG_MERGE_APPEND,
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GST_TAG_PREVIEW_IMAGE, img, NULL);
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gst_sample_unref (img);
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return;
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/* ERRORS */
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not_enough_data:
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{
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GST_WARNING ("COVERART tag with too little base64-encoded data");
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return;
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}
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decode_failed:
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{
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GST_WARNING ("Couldn't decode base64 image data from COVERART tag");
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return;
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}
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convert_failed:
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{
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GST_WARNING ("Couldn't extract image or image type from COVERART tag");
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return;
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}
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}
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|
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/* Standardized way of adding pictures to vorbiscomments:
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* http://wiki.xiph.org/VorbisComment#METADATA_BLOCK_PICTURE
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*/
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static void
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gst_vorbis_tag_add_metadata_block_picture (GstTagList * tags,
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gchar * value, gint value_len)
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{
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GstByteReader reader;
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guint32 img_len = 0, img_type = 0;
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guint32 img_mimetype_len = 0, img_description_len = 0;
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gsize decoded_len;
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const guint8 *data = NULL;
|
|
|
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/* img_data_base64 points to a temporary copy of the base64 encoded data, so
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* it's safe to do inpace decoding here
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*/
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g_base64_decode_inplace (value, &decoded_len);
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if (decoded_len == 0)
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goto decode_failed;
|
|
|
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gst_byte_reader_init (&reader, (guint8 *) value, decoded_len);
|
|
|
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if (!gst_byte_reader_get_uint32_be (&reader, &img_type))
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goto error;
|
|
|
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if (!gst_byte_reader_get_uint32_be (&reader, &img_mimetype_len))
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goto error;
|
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if (!gst_byte_reader_skip (&reader, img_mimetype_len))
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goto error;
|
|
|
|
if (!gst_byte_reader_get_uint32_be (&reader, &img_description_len))
|
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goto error;
|
|
if (!gst_byte_reader_skip (&reader, img_description_len))
|
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goto error;
|
|
|
|
/* Skip width, height, color depth and number of colors for
|
|
* indexed formats */
|
|
if (!gst_byte_reader_skip (&reader, 4 * 4))
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goto error;
|
|
|
|
if (!gst_byte_reader_get_uint32_be (&reader, &img_len))
|
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goto error;
|
|
|
|
if (!gst_byte_reader_get_data (&reader, img_len, &data))
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goto error;
|
|
|
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gst_tag_list_add_id3_image (tags, data, img_len, img_type);
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|
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return;
|
|
|
|
error:
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GST_WARNING
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("Couldn't extract image or image type from METADATA_BLOCK_PICTURE tag");
|
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return;
|
|
decode_failed:
|
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GST_WARNING ("Failed to decode Base64 data from METADATA_BLOCK_PICTURE tag");
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return;
|
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}
|
|
|
|
/**
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|
* gst_tag_list_from_vorbiscomment:
|
|
* @data: data to convert
|
|
* @size: size of @data
|
|
* @id_data: identification data at start of stream
|
|
* @id_data_length: length of identification data
|
|
* @vendor_string: pointer to a string that should take the vendor string
|
|
* of this vorbis comment or NULL if you don't need it.
|
|
*
|
|
* Creates a new tag list that contains the information parsed out of a
|
|
* vorbiscomment packet.
|
|
*
|
|
* Returns: A new #GstTagList with all tags that could be extracted from the
|
|
* given vorbiscomment buffer or NULL on error.
|
|
*/
|
|
GstTagList *
|
|
gst_tag_list_from_vorbiscomment (const guint8 * data, gsize size,
|
|
const guint8 * id_data, const guint id_data_length, gchar ** vendor_string)
|
|
{
|
|
#define ADVANCE(x) G_STMT_START{ \
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data += x; \
|
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size -= x; \
|
|
if (size < 4) goto error; \
|
|
cur_size = GST_READ_UINT32_LE (data); \
|
|
data += 4; \
|
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size -= 4; \
|
|
if (cur_size > size) goto error; \
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|
cur = (gchar*)data; \
|
|
}G_STMT_END
|
|
gchar *cur, *value;
|
|
guint cur_size;
|
|
guint iterations;
|
|
guint value_len;
|
|
GstTagList *list;
|
|
|
|
g_return_val_if_fail (data != NULL, NULL);
|
|
g_return_val_if_fail (id_data != NULL || id_data_length == 0, NULL);
|
|
|
|
list = gst_tag_list_new_empty ();
|
|
|
|
if (size < 11 || size <= id_data_length + 4)
|
|
goto error;
|
|
|
|
if (id_data_length > 0 && memcmp (data, id_data, id_data_length) != 0)
|
|
goto error;
|
|
|
|
ADVANCE (id_data_length);
|
|
|
|
if (vendor_string)
|
|
*vendor_string = g_strndup (cur, cur_size);
|
|
|
|
ADVANCE (cur_size);
|
|
iterations = cur_size;
|
|
cur_size = 0;
|
|
|
|
while (iterations) {
|
|
ADVANCE (cur_size);
|
|
iterations--;
|
|
cur = g_strndup (cur, cur_size);
|
|
value = strchr (cur, '=');
|
|
if (value == NULL) {
|
|
g_free (cur);
|
|
continue;
|
|
}
|
|
*value = '\0';
|
|
value++;
|
|
value_len = strlen (value);
|
|
if (value_len == 0 || !g_utf8_validate (value, value_len, NULL)) {
|
|
g_free (cur);
|
|
continue;
|
|
}
|
|
/* we'll just ignore COVERARTMIME and typefind the image data */
|
|
if (g_ascii_strcasecmp (cur, "COVERARTMIME") == 0) {
|
|
g_free (cur);
|
|
continue;
|
|
} else if (g_ascii_strcasecmp (cur, "COVERART") == 0) {
|
|
gst_vorbis_tag_add_coverart (list, value, value_len);
|
|
} else if (g_ascii_strcasecmp (cur, "METADATA_BLOCK_PICTURE") == 0) {
|
|
gst_vorbis_tag_add_metadata_block_picture (list, value, value_len);
|
|
} else {
|
|
gst_vorbis_tag_add (list, cur, value);
|
|
}
|
|
g_free (cur);
|
|
}
|
|
|
|
return list;
|
|
|
|
error:
|
|
gst_tag_list_unref (list);
|
|
return NULL;
|
|
#undef ADVANCE
|
|
}
|
|
|
|
/**
|
|
* gst_tag_list_from_vorbiscomment_buffer:
|
|
* @buffer: buffer to convert
|
|
* @id_data: identification data at start of stream
|
|
* @id_data_length: length of identification data
|
|
* @vendor_string: pointer to a string that should take the vendor string
|
|
* of this vorbis comment or NULL if you don't need it.
|
|
*
|
|
* Creates a new tag list that contains the information parsed out of a
|
|
* vorbiscomment packet.
|
|
*
|
|
* Returns: A new #GstTagList with all tags that could be extracted from the
|
|
* given vorbiscomment buffer or NULL on error.
|
|
*/
|
|
GstTagList *
|
|
gst_tag_list_from_vorbiscomment_buffer (GstBuffer * buffer,
|
|
const guint8 * id_data, const guint id_data_length, gchar ** vendor_string)
|
|
{
|
|
GstTagList *res;
|
|
GstMapInfo info;
|
|
|
|
if (!gst_buffer_map (buffer, &info, GST_MAP_READ))
|
|
g_return_val_if_reached (NULL);
|
|
|
|
res =
|
|
gst_tag_list_from_vorbiscomment (info.data, info.size, id_data,
|
|
id_data_length, vendor_string);
|
|
gst_buffer_unmap (buffer, &info);
|
|
|
|
return res;
|
|
}
|
|
|
|
typedef struct
|
|
{
|
|
guint count;
|
|
guint data_count;
|
|
GList *entries;
|
|
}
|
|
MyForEach;
|
|
|
|
static GList *
|
|
gst_tag_to_metadata_block_picture (const gchar * tag,
|
|
const GValue * image_value)
|
|
{
|
|
gchar *comment_data, *data_result;
|
|
const gchar *mime_type;
|
|
guint mime_type_len;
|
|
GstStructure *mime_struct;
|
|
GstSample *sample;
|
|
GstBuffer *buffer;
|
|
GstCaps *caps;
|
|
GList *l = NULL;
|
|
GstMapInfo mapinfo = { 0, };
|
|
GstByteWriter writer;
|
|
GstTagImageType image_type = GST_TAG_IMAGE_TYPE_NONE;
|
|
gint width = 0, height = 0;
|
|
guint8 *metadata_block;
|
|
guint metadata_block_len;
|
|
|
|
g_return_val_if_fail (image_value != NULL, NULL);
|
|
|
|
sample = gst_value_get_sample (image_value);
|
|
buffer = gst_sample_get_buffer (sample);
|
|
caps = gst_sample_get_caps (sample);
|
|
g_return_val_if_fail (gst_caps_is_fixed (caps), NULL);
|
|
mime_struct = gst_caps_get_structure (caps, 0);
|
|
|
|
mime_type = gst_structure_get_name (mime_struct);
|
|
if (strcmp (mime_type, "text/uri-list") == 0)
|
|
mime_type = "-->";
|
|
mime_type_len = strlen (mime_type);
|
|
|
|
/* FIXME 2.0: Remove the image-type reading from the caps, this was
|
|
* a bug until 1.2.2. The image-type is only supposed to be in the
|
|
* info structure */
|
|
gst_structure_get (mime_struct, "image-type", GST_TYPE_TAG_IMAGE_TYPE,
|
|
&image_type, "width", G_TYPE_INT, &width, "height", G_TYPE_INT, &height,
|
|
NULL);
|
|
|
|
if (image_type == GST_TAG_IMAGE_TYPE_NONE) {
|
|
const GstStructure *info_struct;
|
|
|
|
info_struct = gst_sample_get_info (sample);
|
|
if (info_struct && gst_structure_has_name (info_struct, "GstTagImageInfo")) {
|
|
gst_structure_get (info_struct, "image-type", GST_TYPE_TAG_IMAGE_TYPE,
|
|
&image_type, NULL);
|
|
}
|
|
}
|
|
|
|
metadata_block_len = 32 + mime_type_len + gst_buffer_get_size (buffer);
|
|
gst_byte_writer_init_with_size (&writer, metadata_block_len, TRUE);
|
|
|
|
if (image_type == GST_TAG_IMAGE_TYPE_NONE
|
|
&& strcmp (tag, GST_TAG_PREVIEW_IMAGE) == 0) {
|
|
gst_byte_writer_put_uint32_be_unchecked (&writer, 0x01);
|
|
} else {
|
|
/* Convert to ID3v2 APIC image type */
|
|
if (image_type == GST_TAG_IMAGE_TYPE_NONE)
|
|
image_type = GST_TAG_IMAGE_TYPE_UNDEFINED;
|
|
else
|
|
image_type = image_type + 2;
|
|
gst_byte_writer_put_uint32_be_unchecked (&writer, image_type);
|
|
}
|
|
|
|
gst_byte_writer_put_uint32_be_unchecked (&writer, mime_type_len);
|
|
gst_byte_writer_put_data_unchecked (&writer, (guint8 *) mime_type,
|
|
mime_type_len);
|
|
/* description length */
|
|
gst_byte_writer_put_uint32_be_unchecked (&writer, 0);
|
|
gst_byte_writer_put_uint32_be_unchecked (&writer, width);
|
|
gst_byte_writer_put_uint32_be_unchecked (&writer, height);
|
|
/* color depth */
|
|
gst_byte_writer_put_uint32_be_unchecked (&writer, 0);
|
|
/* for indexed formats the number of colors */
|
|
gst_byte_writer_put_uint32_be_unchecked (&writer, 0);
|
|
|
|
if (gst_buffer_map (buffer, &mapinfo, GST_MAP_READ)) {
|
|
gst_byte_writer_put_uint32_be_unchecked (&writer, mapinfo.size);
|
|
gst_byte_writer_put_data_unchecked (&writer, mapinfo.data, mapinfo.size);
|
|
gst_buffer_unmap (buffer, &mapinfo);
|
|
} else {
|
|
GST_WARNING ("Failed to map vorbistag image buffer");
|
|
gst_byte_writer_reset (&writer);
|
|
return NULL; /* List is always null up to here */
|
|
}
|
|
|
|
g_assert (gst_byte_writer_get_pos (&writer) == metadata_block_len);
|
|
|
|
metadata_block = gst_byte_writer_reset_and_get_data (&writer);
|
|
comment_data = g_base64_encode (metadata_block, metadata_block_len);
|
|
g_free (metadata_block);
|
|
data_result = g_strdup_printf ("METADATA_BLOCK_PICTURE=%s", comment_data);
|
|
g_free (comment_data);
|
|
|
|
l = g_list_append (l, data_result);
|
|
|
|
return l;
|
|
}
|
|
|
|
/**
|
|
* gst_tag_to_vorbis_comments:
|
|
* @list: a #GstTagList
|
|
* @tag: a GStreamer tag identifier, such as #GST_TAG_ARTIST
|
|
*
|
|
* Creates a new tag list that contains the information parsed out of a
|
|
* vorbiscomment packet.
|
|
*
|
|
* Returns: (element-type utf8) (transfer full): A #GList of newly-allocated
|
|
* key=value strings. Free with g_list_foreach (list, (GFunc) g_free, NULL)
|
|
* plus g_list_free (list)
|
|
*/
|
|
GList *
|
|
gst_tag_to_vorbis_comments (const GstTagList * list, const gchar * tag)
|
|
{
|
|
const gchar *vorbis_tag = NULL;
|
|
GList *l = NULL;
|
|
guint i;
|
|
|
|
g_return_val_if_fail (list != NULL, NULL);
|
|
g_return_val_if_fail (tag != NULL, NULL);
|
|
|
|
/* Special case: cover art is split into two tags to store data and
|
|
* MIME-type. Even if the tag list contains multiple entries, there is
|
|
* no reasonable way to save more than one.
|
|
* If both, preview image and image, are present we prefer the
|
|
* image tag.
|
|
*/
|
|
if ((strcmp (tag, GST_TAG_PREVIEW_IMAGE) == 0 &&
|
|
gst_tag_list_get_tag_size (list, GST_TAG_IMAGE) == 0) ||
|
|
strcmp (tag, GST_TAG_IMAGE) == 0) {
|
|
return gst_tag_to_metadata_block_picture (tag,
|
|
gst_tag_list_get_value_index (list, tag, 0));
|
|
}
|
|
|
|
if (strcmp (tag, GST_TAG_EXTENDED_COMMENT) != 0) {
|
|
vorbis_tag = gst_tag_to_vorbis_tag (tag);
|
|
if (!vorbis_tag)
|
|
return NULL;
|
|
}
|
|
|
|
/* FIXME: for tags that can map to multiple vorbis comment keys, add all
|
|
* of the possible keys */
|
|
for (i = 0; i < gst_tag_list_get_tag_size (list, tag); i++) {
|
|
GType tag_type = gst_tag_get_type (tag);
|
|
gchar *result = NULL;
|
|
|
|
switch (tag_type) {
|
|
case G_TYPE_UINT:{
|
|
guint u;
|
|
|
|
if (!gst_tag_list_get_uint_index (list, tag, i, &u))
|
|
g_return_val_if_reached (NULL);
|
|
result = g_strdup_printf ("%s=%u", vorbis_tag, u);
|
|
break;
|
|
}
|
|
case G_TYPE_STRING:{
|
|
const gchar *str = NULL;
|
|
|
|
if (!gst_tag_list_peek_string_index (list, tag, i, &str))
|
|
g_return_val_if_reached (NULL);
|
|
|
|
/* special case: GST_TAG_EXTENDED_COMMENT */
|
|
if (vorbis_tag == NULL) {
|
|
gchar *key = NULL, *val = NULL;
|
|
|
|
if (gst_tag_parse_extended_comment (str, &key, NULL, &val, TRUE)) {
|
|
result = g_strdup_printf ("%s=%s", key, val);
|
|
g_free (key);
|
|
g_free (val);
|
|
} else {
|
|
GST_WARNING ("Not a valid extended comment string: %s", str);
|
|
continue;
|
|
}
|
|
} else {
|
|
result = g_strdup_printf ("%s=%s", vorbis_tag, str);
|
|
}
|
|
break;
|
|
}
|
|
case G_TYPE_DOUBLE:{
|
|
gdouble value;
|
|
gchar buf[G_ASCII_DTOSTR_BUF_SIZE];
|
|
|
|
if (!gst_tag_list_get_double_index (list, tag, i, &value))
|
|
g_return_val_if_reached (NULL);
|
|
g_ascii_formatd (buf, G_ASCII_DTOSTR_BUF_SIZE, "%f", value);
|
|
result = g_strconcat (vorbis_tag, "=", buf, NULL);
|
|
break;
|
|
}
|
|
default:{
|
|
if (tag_type == GST_TYPE_DATE_TIME) {
|
|
GstDateTime *datetime;
|
|
|
|
if (gst_tag_list_get_date_time_index (list, tag, i, &datetime)) {
|
|
gchar *string;
|
|
|
|
/* vorbis suggests using ISO date formats:
|
|
* http://wiki.xiph.org/VorbisComment#Date_and_time */
|
|
string = gst_date_time_to_iso8601_string (datetime);
|
|
result = g_strdup_printf ("%s=%s", vorbis_tag, string);
|
|
g_free (string);
|
|
|
|
gst_date_time_unref (datetime);
|
|
}
|
|
} else {
|
|
GST_DEBUG ("Couldn't write tag %s", tag);
|
|
continue;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
l = g_list_prepend (l, result);
|
|
}
|
|
|
|
return g_list_reverse (l);
|
|
}
|
|
|
|
static void
|
|
write_one_tag (const GstTagList * list, const gchar * tag, gpointer user_data)
|
|
{
|
|
MyForEach *data = (MyForEach *) user_data;
|
|
GList *comments;
|
|
GList *it;
|
|
|
|
comments = gst_tag_to_vorbis_comments (list, tag);
|
|
|
|
for (it = comments; it != NULL; it = it->next) {
|
|
gchar *result = it->data;
|
|
|
|
data->count++;
|
|
data->data_count += strlen (result);
|
|
data->entries = g_list_prepend (data->entries, result);
|
|
}
|
|
|
|
g_list_free (comments);
|
|
}
|
|
|
|
/**
|
|
* gst_tag_list_to_vorbiscomment_buffer:
|
|
* @list: tag list to convert
|
|
* @id_data: identification data at start of stream
|
|
* @id_data_length: length of identification data, may be 0 if @id_data is NULL
|
|
* @vendor_string: string that describes the vendor string or NULL
|
|
*
|
|
* Creates a new vorbiscomment buffer from a tag list.
|
|
*
|
|
* Returns: A new #GstBuffer containing a vorbiscomment buffer with all tags
|
|
* that could be converted from the given tag list.
|
|
*/
|
|
GstBuffer *
|
|
gst_tag_list_to_vorbiscomment_buffer (const GstTagList * list,
|
|
const guint8 * id_data, const guint id_data_length,
|
|
const gchar * vendor_string)
|
|
{
|
|
GstBuffer *buffer;
|
|
GstMapInfo info;
|
|
guint8 *data;
|
|
guint i;
|
|
GList *l;
|
|
MyForEach my_data = { 0, 0, NULL };
|
|
guint vendor_len;
|
|
int required_size;
|
|
|
|
g_return_val_if_fail (GST_IS_TAG_LIST (list), NULL);
|
|
g_return_val_if_fail (id_data != NULL || id_data_length == 0, NULL);
|
|
|
|
if (vendor_string == NULL)
|
|
vendor_string = "GStreamer encoded vorbiscomment";
|
|
vendor_len = strlen (vendor_string);
|
|
required_size = id_data_length + 4 + vendor_len + 4 + 1;
|
|
gst_tag_list_foreach ((GstTagList *) list, write_one_tag, &my_data);
|
|
required_size += 4 * my_data.count + my_data.data_count;
|
|
|
|
buffer = gst_buffer_new_and_alloc (required_size);
|
|
gst_buffer_map (buffer, &info, GST_MAP_WRITE);
|
|
data = info.data;
|
|
if (id_data_length > 0) {
|
|
memcpy (data, id_data, id_data_length);
|
|
data += id_data_length;
|
|
}
|
|
GST_WRITE_UINT32_LE (data, vendor_len);
|
|
data += 4;
|
|
memcpy (data, vendor_string, vendor_len);
|
|
data += vendor_len;
|
|
l = my_data.entries = g_list_reverse (my_data.entries);
|
|
GST_WRITE_UINT32_LE (data, my_data.count);
|
|
data += 4;
|
|
for (i = 0; i < my_data.count; i++) {
|
|
guint size;
|
|
gchar *cur;
|
|
|
|
g_assert (l != NULL);
|
|
cur = l->data;
|
|
l = g_list_next (l);
|
|
size = strlen (cur);
|
|
GST_WRITE_UINT32_LE (data, size);
|
|
data += 4;
|
|
memcpy (data, cur, size);
|
|
data += size;
|
|
}
|
|
g_list_foreach (my_data.entries, (GFunc) g_free, NULL);
|
|
g_list_free (my_data.entries);
|
|
*data = 1;
|
|
gst_buffer_unmap (buffer, &info);
|
|
|
|
return buffer;
|
|
}
|