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qtdemux: provide language tag for stream

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This commit is contained in:
Mark Nauwelaerts 2009-10-09 17:02:57 +02:00
parent 1210a92ff6
commit 955a719c1a
1 changed files with 22 additions and 0 deletions
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22
gst/qtdemux/qtdemux.c
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@ -177,6 +177,10 @@ struct _QtDemuxStream
guint64 duration; /* in timescale */
guint32 timescale;
/* language */
guint lang_code;
gchar lang_id[4]; /* in ISO 639-2 */
/* our samples */
guint32 n_samples;
QtDemuxSample *samples;
@ -4278,15 +4282,24 @@ qtdemux_parse_trak (GstQTDemux * qtdemux, GNode * trak)
if (version == 0x01000000) {
stream->timescale = QT_UINT32 ((guint8 *) mdhd->data + 28);
stream->duration = QT_UINT64 ((guint8 *) mdhd->data + 32);
stream->lang_code = QT_UINT16 ((guint8 *) mdhd->data + 36);
} else {
stream->timescale = QT_UINT32 ((guint8 *) mdhd->data + 20);
stream->duration = QT_UINT32 ((guint8 *) mdhd->data + 24);
stream->lang_code = QT_UINT16 ((guint8 *) mdhd->data + 28);
}
stream->lang_id[0] = 0x60 + ((stream->lang_code >> 10) & 0x1F);
stream->lang_id[1] = 0x60 + ((stream->lang_code >> 5) & 0x1F);
stream->lang_id[2] = 0x60 + (stream->lang_code & 0x1F);
stream->lang_id[3] = 0;
GST_LOG_OBJECT (qtdemux, "track timescale: %" G_GUINT32_FORMAT,
stream->timescale);
GST_LOG_OBJECT (qtdemux, "track duration: %" G_GUINT64_FORMAT,
stream->duration);
GST_LOG_OBJECT (qtdemux, "track language code/id: 0x%x/%s",
stream->lang_code, stream->lang_id);
if (G_UNLIKELY (stream->timescale == 0 || qtdemux->timescale == 0))
goto corrupt_file;
@ -4922,6 +4935,15 @@ qtdemux_parse_trak (GstQTDemux * qtdemux, GNode * trak)
if (!qtdemux_parse_segments (qtdemux, stream, trak))
goto segments_failed;
/* add some language tag, if useful */
if (stream->lang_code && strcmp (stream->lang_id, "unk") &&
strcmp (stream->lang_id, "und")) {
if (!list)
list = gst_tag_list_new ();
gst_tag_list_add (list, GST_TAG_MERGE_REPLACE,
GST_TAG_LANGUAGE_CODE, stream->lang_id, NULL);
}
/* now we are ready to add the stream */
gst_qtdemux_add_stream (qtdemux, stream, list);