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Map ffmpeg metadata to GStreamer tags
Update to the metadata API ffmpeg has had in place for a long time now, and reenable output of GStreamer tags from the demuxer. https://bugzilla.gnome.org/show_bug.cgi?id=566605
This commit is contained in:
Jan Schmidt
Nicolas Dufresne
parent
c1333df059
commit
51896af52b
1 changed files with 135 additions and 71 deletions
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@ -127,6 +127,7 @@ static gboolean gst_ffmpegdemux_sink_activate (GstPad * sinkpad,
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GstObject * parent);
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static gboolean gst_ffmpegdemux_sink_activate_mode (GstPad * sinkpad,
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GstObject * parent, GstPadMode mode, gboolean active);
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static GstTagList *gst_ffmpeg_metadata_to_tag_list (AVDictionary * metadata);
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#if 0
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static gboolean
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@ -1028,7 +1029,10 @@ gst_ffmpegdemux_get_stream (GstFFMpegDemux * demux, AVStream * avstream)
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/* metadata */
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if ((codec = gst_ffmpeg_get_codecid_longname (ctx->codec_id))) {
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stream->tags = gst_tag_list_new_empty ();
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stream->tags = gst_ffmpeg_metadata_to_tag_list (avstream->metadata);
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if (stream->tags == NULL)
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stream->tags = gst_tag_list_new_empty ();
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gst_tag_list_add (stream->tags, GST_TAG_MERGE_REPLACE,
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(ctx->codec_type == AVMEDIA_TYPE_VIDEO) ?
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@ -1055,12 +1059,8 @@ unknown_caps:
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}
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}
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#if 0
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/* Re-enable once converted to new AVMetaData API
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* See #566605
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*/
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static gchar *
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my_safe_copy (gchar * input)
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safe_utf8_copy (gchar * input)
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{
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gchar *output;
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@ -1074,62 +1074,128 @@ my_safe_copy (gchar * input)
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return output;
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}
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/* g_hash_table_insert requires non-const arguments, so
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* we need to cast const strings to void * */
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#define ADD_TAG_MAPPING(h, k, g) \
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g_hash_table_insert ((h), (void *) (k), (void *) (g));
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static GstTagList *
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gst_ffmpegdemux_read_tags (GstFFMpegDemux * demux)
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gst_ffmpeg_metadata_to_tag_list (AVDictionary * metadata)
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{
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GstTagList *tlist;
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gboolean hastag = FALSE;
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GHashTable *tagmap = NULL;
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AVDictionaryEntry *tag = NULL;
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GstTagList *list;
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tlist = gst_tag_list_new ();
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if (g_once_init_enter (&tagmap)) {
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GHashTable *tmp = g_hash_table_new (g_str_hash, g_str_equal);
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if (*demux->context->title) {
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gst_tag_list_add (tlist, GST_TAG_MERGE_REPLACE,
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GST_TAG_TITLE, my_safe_copy (demux->context->title), NULL);
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hastag = TRUE;
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}
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if (*demux->context->author) {
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gst_tag_list_add (tlist, GST_TAG_MERGE_REPLACE,
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GST_TAG_ARTIST, my_safe_copy (demux->context->author), NULL);
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hastag = TRUE;
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}
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if (*demux->context->copyright) {
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gst_tag_list_add (tlist, GST_TAG_MERGE_REPLACE,
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GST_TAG_COPYRIGHT, my_safe_copy (demux->context->copyright), NULL);
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hastag = TRUE;
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}
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if (*demux->context->comment) {
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gst_tag_list_add (tlist, GST_TAG_MERGE_REPLACE,
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GST_TAG_COMMENT, my_safe_copy (demux->context->comment), NULL);
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hastag = TRUE;
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}
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if (*demux->context->album) {
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gst_tag_list_add (tlist, GST_TAG_MERGE_REPLACE,
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GST_TAG_ALBUM, my_safe_copy (demux->context->album), NULL);
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hastag = TRUE;
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}
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if (demux->context->track) {
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gst_tag_list_add (tlist, GST_TAG_MERGE_REPLACE,
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GST_TAG_TRACK_NUMBER, demux->context->track, NULL);
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hastag = TRUE;
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}
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if (*demux->context->genre) {
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gst_tag_list_add (tlist, GST_TAG_MERGE_REPLACE,
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GST_TAG_GENRE, my_safe_copy (demux->context->genre), NULL);
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hastag = TRUE;
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}
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if (demux->context->year) {
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gst_tag_list_add (tlist, GST_TAG_MERGE_REPLACE,
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GST_TAG_DATE, g_date_new_dmy (1, 1, demux->context->year), NULL);
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hastag = TRUE;
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/* This is a list of standard tag keys taken from the avformat.h
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* header, without handling any variants. */
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ADD_TAG_MAPPING (tmp, "album", GST_TAG_ALBUM);
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ADD_TAG_MAPPING (tmp, "album_artist", GST_TAG_ALBUM_ARTIST);
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ADD_TAG_MAPPING (tmp, "artist", GST_TAG_ALBUM_ARTIST);
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ADD_TAG_MAPPING (tmp, "comment", GST_TAG_COMMENT);
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ADD_TAG_MAPPING (tmp, "composer", GST_TAG_COMPOSER);
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ADD_TAG_MAPPING (tmp, "copyright", GST_TAG_COPYRIGHT);
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/* Need to convert ISO 8601 to GstDateTime: */
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ADD_TAG_MAPPING (tmp, "creation_time", GST_TAG_DATE_TIME);
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/* Need to convert ISO 8601 to GDateTime: */
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ADD_TAG_MAPPING (tmp, "date", GST_TAG_DATE_TIME);
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ADD_TAG_MAPPING (tmp, "disc", GST_TAG_ALBUM_VOLUME_NUMBER);
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ADD_TAG_MAPPING (tmp, "encoder", GST_TAG_ENCODER);
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ADD_TAG_MAPPING (tmp, "encoded_by", GST_TAG_ENCODED_BY);
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/* ADD_TAG_MAPPING (tmp, "filename", ); -- No mapping */
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ADD_TAG_MAPPING (tmp, "genre", GST_TAG_GENRE);
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ADD_TAG_MAPPING (tmp, "language", GST_TAG_LANGUAGE_CODE);
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ADD_TAG_MAPPING (tmp, "performer", GST_TAG_PERFORMER);
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ADD_TAG_MAPPING (tmp, "publisher", GST_TAG_PUBLISHER);
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/* ADD_TAG_MAPPING(tmp, "service_name", ); -- No mapping */
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/* ADD_TAG_MAPPING(tmp, "service_provider", ); -- No mapping */
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ADD_TAG_MAPPING (tmp, "title", GST_TAG_TITLE);
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ADD_TAG_MAPPING (tmp, "track", GST_TAG_TRACK_NUMBER);
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g_once_init_leave (&tagmap, tmp);
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}
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if (!hastag) {
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gst_tag_list_unref (tlist);
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tlist = NULL;
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list = gst_tag_list_new_empty ();
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while ((tag = av_dict_get (metadata, "", tag, AV_DICT_IGNORE_SUFFIX))) {
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const gchar *gsttag = g_hash_table_lookup (tagmap, tag->key);
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GType t;
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GST_LOG ("mapping tag %s=%s\n", tag->key, tag->value);
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if (gsttag == NULL) {
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GST_LOG ("Ignoring unknown metadata tag %s", tag->key);
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continue;
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}
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/* Special case, track and disc numbers may be x/n in libav, split
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* them */
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if (g_str_equal (gsttag, GST_TAG_TRACK_NUMBER)) {
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guint track, trackcount;
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if (sscanf (tag->value, "%u/%u", &track, &trackcount) == 2) {
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gst_tag_list_add (list, GST_TAG_MERGE_REPLACE,
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gsttag, track, GST_TAG_TRACK_COUNT, trackcount, NULL);
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continue;
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}
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/* Fall through and handle as a single uint below */
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} else if (g_str_equal (gsttag, GST_TAG_ALBUM_VOLUME_NUMBER)) {
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guint disc, disc_count;
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if (sscanf (tag->value, "%u/%u", &disc, &disc_count) == 2) {
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gst_tag_list_add (list, GST_TAG_MERGE_REPLACE,
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gsttag, disc, GST_TAG_ALBUM_VOLUME_COUNT, disc_count, NULL);
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continue;
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}
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/* Fall through and handle as a single uint below */
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}
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t = gst_tag_get_type (gsttag);
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if (t == G_TYPE_STRING) {
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gchar *s = safe_utf8_copy (tag->value);
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gst_tag_list_add (list, GST_TAG_MERGE_REPLACE, gsttag, s, NULL);
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g_free (s);
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} else if (t == G_TYPE_UINT || t == G_TYPE_INT) {
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gchar *end;
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gint v = strtol (tag->value, &end, 10);
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if (end == tag->value)
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continue; /* Failed to parse */
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gst_tag_list_add (list, GST_TAG_MERGE_REPLACE, gsttag, v, NULL);
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} else if (t == G_TYPE_DATE) {
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guint year, month, day;
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GDate *date = NULL;
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if (sscanf (tag->value, "%04u-%02u-%02u", &year, &month, &day) == 3) {
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date = g_date_new_dmy (day, month, year);
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} else {
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/* Try interpreting just as a year */
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gchar *end;
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year = strtol (tag->value, &end, 10);
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if (end != tag->value)
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date = g_date_new_dmy (1, 1, year);
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}
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if (date) {
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gst_tag_list_add (list, GST_TAG_MERGE_REPLACE, gsttag, date, NULL);
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g_date_free (date);
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}
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} else if (t == GST_TYPE_DATE_TIME) {
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gchar *s = safe_utf8_copy (tag->value);
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GstDateTime *d = gst_date_time_new_from_iso8601_string (s);
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g_free (s);
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if (d) {
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gst_tag_list_add (list, GST_TAG_MERGE_REPLACE, gsttag, d, NULL);
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gst_date_time_unref (d);
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}
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} else {
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GST_FIXME ("Unhandled tag %s", gsttag);
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}
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}
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return tlist;
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if (gst_tag_list_is_empty (list)) {
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gst_tag_list_unref (list);
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return NULL;
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}
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return list;
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}
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#endif
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static gboolean
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gst_ffmpegdemux_open (GstFFMpegDemux * demux)
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@ -1138,12 +1204,7 @@ gst_ffmpegdemux_open (GstFFMpegDemux * demux)
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GstFFMpegDemuxClass *oclass =
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(GstFFMpegDemuxClass *) G_OBJECT_GET_CLASS (demux);
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gint res, n_streams, i;
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#if 0
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/* Re-enable once converted to new AVMetaData API
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* See #566605
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*/
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GstTagList *tags;
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#endif
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GstEvent *event;
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GList *cached_events;
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@ -1224,28 +1285,31 @@ gst_ffmpegdemux_open (GstFFMpegDemux * demux)
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cached_events = g_list_delete_link (cached_events, cached_events);
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}
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#if 0
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/* Re-enable once converted to new AVMetaData API
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* See #566605
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*/
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/* grab the global tags */
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tags = gst_ffmpegdemux_read_tags (demux);
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tags = gst_ffmpeg_metadata_to_tag_list (demux->context->metadata);
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if (tags) {
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GST_INFO_OBJECT (demux, "global tags: %" GST_PTR_FORMAT, tags);
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gst_element_found_tags (GST_ELEMENT (demux), tags);
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}
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#endif
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/* now handle the stream tags */
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for (i = 0; i < n_streams; i++) {
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GstFFStream *stream;
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stream = gst_ffmpegdemux_get_stream (demux, demux->context->streams[i]);
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if (stream->tags != NULL && stream->pad != NULL) {
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GST_INFO_OBJECT (stream->pad, "stream tags: %" GST_PTR_FORMAT,
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stream->tags);
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gst_pad_push_event (stream->pad,
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gst_event_new_tag (gst_tag_list_ref (stream->tags)));
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if (stream->pad != NULL) {
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/* Global tags */
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if (tags)
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gst_pad_push_event (stream->pad,
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gst_event_new_tag (gst_tag_list_ref (tags)));
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/* Per-stream tags */
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if (stream->tags != NULL) {
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GST_INFO_OBJECT (stream->pad, "stream tags: %" GST_PTR_FORMAT,
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stream->tags);
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gst_pad_push_event (stream->pad,
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gst_event_new_tag (gst_tag_list_ref (stream->tags)));
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}
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}
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}
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