/* decode a clip tag
* this callback is registered with dec->parser. It is called whenever a
* clip is parsed.
*/
static void
gst_cmml_dec_parse_clip (GstCmmlDec * dec, GstCmmlTagClip * clip)
{
GstCmmlTagClip *prev_clip;
dec->flow_return = GST_FLOW_OK;
if (clip->empty)
GST_INFO_OBJECT (dec, "parsing empty clip");
else
GST_INFO_OBJECT (dec, "parsing clip (id: %s)", clip->id);
clip->start_time = dec->timestamp;
if (clip->start_time == GST_CLOCK_TIME_NONE) {
GST_ELEMENT_ERROR (dec, STREAM, DECODE,
(NULL), ("invalid clip start time"));
dec->flow_return = GST_FLOW_ERROR;
return;
}
/* get the last clip in the current track */
prev_clip = gst_cmml_track_list_get_track_last_clip (dec->tracks,
(gchar *) clip->track);
if (prev_clip) {
/* output the previous clip */
if (clip->empty)
/* the current clip marks the end of the previous one */
prev_clip->end_time = clip->start_time;
gst_cmml_dec_push_clip (dec, prev_clip);
}
if (dec->wait_clip_end) {
/* now it's time to send the tag for the previous clip */
if (prev_clip) {
prev_clip->end_time = clip->start_time;
gst_cmml_dec_send_clip_tag (dec, prev_clip);
}
} else if (!clip->empty) {
/* send the tag for the current clip */
gst_cmml_dec_send_clip_tag (dec, clip);
}
if (prev_clip)
gst_cmml_track_list_del_clip (dec->tracks, prev_clip);
if (!clip->empty)
if (!gst_cmml_track_list_has_clip (dec->tracks, clip))
gst_cmml_track_list_add_clip (dec->tracks, clip);
}
static gboolean
gst_cmml_dec_sink_event (GstPad * pad, GstEvent * event)
{
GstCmmlDec *dec = GST_CMML_DEC (GST_PAD_PARENT (pad));
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_EOS:
{
GstBuffer *buffer;
GstCmmlTagClip *clip;
GList *clips, *walk;
GST_INFO_OBJECT (dec, "got EOS, flushing clips");
/* since we output a clip when the next one in the same track is found, on
* EOS we need to output the last clip (if any) of every track
*/
clips = gst_cmml_track_list_get_clips (dec->tracks);
for (walk = clips; walk; walk = g_list_next (walk)) {
clip = GST_CMML_TAG_CLIP (walk->data);
gst_cmml_dec_push_clip (dec, clip);
if (dec->wait_clip_end) {
clip->end_time = dec->timestamp;
gst_cmml_dec_send_clip_tag (dec, clip);
}
}
g_list_free (clips);
/* send the cmml end tag */
dec->flow_return = gst_cmml_dec_new_buffer (dec,
(guchar *) "</cmml>", strlen ("</cmml>"), &buffer);
if (dec->flow_return == GST_FLOW_OK)
dec->flow_return = gst_pad_push (dec->srcpad, buffer);
if (dec->flow_return == GST_FLOW_NOT_LINKED)
dec->flow_return = GST_FLOW_OK; /* Ignore NOT_LINKED */
break;
}
default:
break;
}
return gst_pad_event_default (pad, event);
}