static GstEvent *
gst_vader_event_new(GstVader *c, GstEventType type, GstClockTime timestamp)
{
GstEvent *e;
e = gst_event_new_custom(type, NULL);
GST_EVENT_TIMESTAMP(e) = timestamp;
return e;
}
static void
gst_event_init (GstEventImpl * event, GstEventType type)
{
gst_mini_object_init (GST_MINI_OBJECT_CAST (event), 0, _gst_event_type,
(GstMiniObjectCopyFunction) _gst_event_copy, NULL,
(GstMiniObjectFreeFunction) _gst_event_free);
GST_EVENT_TYPE (event) = type;
GST_EVENT_TIMESTAMP (event) = GST_CLOCK_TIME_NONE;
GST_EVENT_SEQNUM (event) = gst_util_seqnum_next ();
}
static GstEvent *
_gst_event_copy (GstEvent * event)
{
GstEvent *copy;
copy = (GstEvent *) gst_mini_object_new (GST_TYPE_EVENT);
GST_EVENT_TYPE (copy) = GST_EVENT_TYPE (event);
GST_EVENT_TIMESTAMP (copy) = GST_EVENT_TIMESTAMP (event);
GST_EVENT_SEQNUM (copy) = GST_EVENT_SEQNUM (event);
if (GST_EVENT_SRC (event)) {
GST_EVENT_SRC (copy) = gst_object_ref (GST_EVENT_SRC (event));
}
if (event->structure) {
copy->structure = gst_structure_copy (event->structure);
gst_structure_set_parent_refcount (copy->structure,
©->mini_object.refcount);
}
return copy;
}
static GstEvent *
_gst_event_copy (GstEvent * event)
{
GstEventImpl *copy;
GstStructure *s;
copy = g_slice_new0 (GstEventImpl);
gst_event_init (copy, GST_EVENT_TYPE (event));
GST_EVENT_TIMESTAMP (copy) = GST_EVENT_TIMESTAMP (event);
GST_EVENT_SEQNUM (copy) = GST_EVENT_SEQNUM (event);
s = GST_EVENT_STRUCTURE (event);
if (s) {
GST_EVENT_STRUCTURE (copy) = gst_structure_copy (s);
gst_structure_set_parent_refcount (GST_EVENT_STRUCTURE (copy),
©->event.mini_object.refcount);
} else {
GST_EVENT_STRUCTURE (copy) = NULL;
}
return GST_EVENT_CAST (copy);
}
/* takes ownership of tag list */
static gboolean
gst_icydemux_send_tag_event (GstICYDemux * icydemux, GstTagList * tags)
{
GstEvent *event;
gst_element_post_message (GST_ELEMENT (icydemux),
gst_message_new_tag (GST_OBJECT (icydemux), gst_tag_list_copy (tags)));
event = gst_event_new_tag (tags);
GST_EVENT_TIMESTAMP (event) = 0;
GST_DEBUG_OBJECT (icydemux, "Sending tag event on src pad");
return gst_pad_push_event (icydemux->srcpad, event);
}
static void
gst_event_init (GstEvent * event)
{
GST_EVENT_TIMESTAMP (event) = GST_CLOCK_TIME_NONE;
}
static gboolean
gst_pocketsphinx_event(GstPad *pad, GstEvent *event)
{
GstPocketSphinx *ps;
ps = GST_POCKETSPHINX(GST_OBJECT_PARENT(pad));
/* Pick out VAD events. */
switch (event->type) {
case GST_EVENT_NEWSEGMENT:
/* Initialize the decoder once the audio starts, if it's not
* there yet. */
if (ps->ps == NULL) {
ps->ps = ps_init(ps->config);
if (ps->ps == NULL) {
GST_ELEMENT_ERROR(GST_ELEMENT(ps), LIBRARY, INIT,
("Failed to initialize PocketSphinx"),
("Failed to initialize PocketSphinx"));
return FALSE;
}
}
return gst_pad_event_default(pad, event);
case GST_EVENT_VADER_START:
ps->listening = TRUE;
ps_start_utt(ps->ps, NULL);
/* Forward this event. */
return gst_pad_event_default(pad, event);
case GST_EVENT_EOS:
case GST_EVENT_VADER_STOP: {
GstBuffer *buffer;
int32 score;
char const *hyp;
char const *uttid;
hyp = NULL;
if (ps->listening) {
ps->listening = FALSE;
ps_end_utt(ps->ps);
hyp = ps_get_hyp(ps->ps, &score, &uttid);
/* Dump the lattice if requested. */
if (ps->latdir) {
char *latfile = string_join(ps->latdir, "/", uttid, ".lat", NULL);
ps_lattice_t *dag;
if ((dag = ps_get_lattice(ps->ps)))
ps_lattice_write(dag, latfile);
ckd_free(latfile);
}
}
if (hyp) {
/* Emit a signal for applications. */
g_signal_emit(ps, gst_pocketsphinx_signals[SIGNAL_RESULT],
0, hyp, uttid);
/* Forward this result in a buffer. */
buffer = gst_buffer_new_and_alloc(strlen(hyp) + 2);
strcpy((char *)GST_BUFFER_DATA(buffer), hyp);
GST_BUFFER_DATA(buffer)[strlen(hyp)] = '\n';
GST_BUFFER_DATA(buffer)[strlen(hyp)+1] = '\0';
GST_BUFFER_TIMESTAMP(buffer) = GST_EVENT_TIMESTAMP(event);
gst_buffer_set_caps(buffer, GST_PAD_CAPS(ps->srcpad));
gst_pad_push(ps->srcpad, buffer);
}
/* Forward this event. */
return gst_pad_event_default(pad, event);
}
default:
/* Don't bother with other events. */
return gst_pad_event_default(pad, event);
}
}
