static GstFlowReturn
gst_navseek_transform_ip (GstBaseTransform * basetrans, GstBuffer * buf)
{
GstNavSeek *navseek = GST_NAVSEEK (basetrans);
GST_OBJECT_LOCK (navseek);
if (GST_BUFFER_TIMESTAMP_IS_VALID (buf)) {
if (navseek->grab_seg_start) {
navseek->segment_start = GST_BUFFER_TIMESTAMP (buf);
navseek->segment_end = GST_CLOCK_TIME_NONE;
navseek->grab_seg_start = FALSE;
}
if (navseek->grab_seg_end) {
navseek->segment_end = GST_BUFFER_TIMESTAMP (buf);
navseek->grab_seg_end = FALSE;
gst_navseek_segseek (navseek);
}
}
GST_OBJECT_UNLOCK (navseek);
return GST_FLOW_OK;
}
static gboolean
gst_navseek_sink_event (GstBaseTransform * trans, GstEvent * event)
{
GstNavSeek *navseek = GST_NAVSEEK (trans);
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_EOS:
GST_OBJECT_LOCK (navseek);
if (navseek->loop)
gst_navseek_segseek (navseek);
GST_OBJECT_UNLOCK (navseek);
break;
default:
break;
}
return GST_BASE_TRANSFORM_CLASS (parent_class)->sink_event (trans, event);
}
static void
gst_navseek_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstNavSeek *navseek = GST_NAVSEEK (object);
switch (prop_id) {
case PROP_SEEKOFFSET:
GST_OBJECT_LOCK (navseek);
g_value_set_double (value, navseek->seek_offset);
GST_OBJECT_UNLOCK (navseek);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static gboolean
gst_navseek_src_event (GstBaseTransform * trans, GstEvent * event)
{
GstNavSeek *navseek;
gboolean ret = TRUE;
navseek = GST_NAVSEEK (trans);
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_NAVIGATION:
{
/* Check for a keyup and convert left/right to a seek event */
const GstStructure *structure;
const gchar *event_type;
structure = gst_event_get_structure (event);
g_return_val_if_fail (structure != NULL, FALSE);
event_type = gst_structure_get_string (structure, "event");
g_return_val_if_fail (event_type != NULL, FALSE);
if (strcmp (event_type, "key-press") == 0) {
const gchar *key;
key = gst_structure_get_string (structure, "key");
g_return_val_if_fail (key != NULL, FALSE);
if (strcmp (key, "Left") == 0) {
/* Seek backward by 5 secs */
gst_navseek_seek (navseek, -1.0 * navseek->seek_offset * GST_SECOND);
} else if (strcmp (key, "Right") == 0) {
/* Seek forward */
gst_navseek_seek (navseek, navseek->seek_offset * GST_SECOND);
} else if (strcmp (key, "s") == 0) {
/* Grab the next frame as the start frame of a segment */
navseek->grab_seg_start = TRUE;
} else if (strcmp (key, "e") == 0) {
/* Grab the next frame as the end frame of a segment */
navseek->grab_seg_end = TRUE;
} else if (strcmp (key, "l") == 0) {
/* Toggle the loop flag. If we have both start and end segment times send a seek */
navseek->loop = !navseek->loop;
gst_navseek_segseek (navseek);
} else if (strcmp (key, "f") == 0) {
/* fast forward */
gst_navseek_change_playback_rate (navseek, 2.0);
} else if (strcmp (key, "r") == 0) {
/* rewind */
gst_navseek_change_playback_rate (navseek, -2.0);
} else if (strcmp (key, "n") == 0) {
/* normal speed */
gst_navseek_change_playback_rate (navseek, 1.0);
} else if (strcmp (key, "space") == 0) {
gst_navseek_toggle_play_pause (navseek);
}
} else {
break;
}
gst_event_unref (event);
event = NULL;
break;
}
default:
break;
}
if (event)
ret = GST_BASE_TRANSFORM_CLASS (parent_class)->src_event (trans, event);
return ret;
}
static gboolean
gst_navseek_handle_src_event (GstPad * pad, GstEvent * event)
{
GstNavSeek *navseek;
gboolean ret = TRUE;
navseek = GST_NAVSEEK (GST_PAD_PARENT (pad));
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_NAVIGATION:
/* Check for a keyup and convert left/right to a seek event */
{
const GstStructure *structure;
const gchar *event_type;
structure = gst_event_get_structure (event);
g_return_val_if_fail (structure != NULL, FALSE);
event_type = gst_structure_get_string (structure, "event");
g_return_val_if_fail (event_type != NULL, FALSE);
if (strcmp (event_type, "key-press") == 0) {
const gchar *key;
key = gst_structure_get_string (structure, "key");
g_return_val_if_fail (key != NULL, FALSE);
if (strcmp (key, "Left") == 0) {
/* Seek backward by 5 secs */
gst_navseek_seek (navseek, -1.0 * navseek->seek_offset * GST_SECOND);
} else if (strcmp (key, "Right") == 0) {
/* Seek forward */
gst_navseek_seek (navseek, navseek->seek_offset * GST_SECOND);
} else if (strcmp (key, "s") == 0) {
/* Grab the next frame as the start frame of a segment */
navseek->grab_seg_start = TRUE;
} else if (strcmp (key, "e") == 0) {
/* Grab the next frame as the end frame of a segment */
navseek->grab_seg_end = TRUE;
} else if (strcmp (key, "l") == 0) {
/* Toggle the loop flag. If we have both start and end segment times send a seek */
navseek->loop = !navseek->loop;
gst_navseek_segseek (navseek);
}
} else {
break;
}
gst_event_unref (event);
event = NULL;
}
break;
default:
break;
}
if (event && GST_PAD_IS_LINKED (GST_BASE_TRANSFORM (navseek)->sinkpad)) {
GstPad *peer_pad = gst_pad_get_peer (GST_BASE_TRANSFORM (navseek)->sinkpad);
ret = gst_pad_send_event (peer_pad, event);
gst_object_unref (peer_pad);
}
return ret;
}
