/* Instruct the pipeline to seek to a different position */
void gst_native_set_position (JNIEnv* env, jobject thiz, int milliseconds) {
CustomData *data = GET_CUSTOM_DATA (env, thiz, custom_data_field_id);
if (!data) return;
gint64 desired_position = (gint64)(milliseconds * GST_MSECOND);
if (data->state >= GST_STATE_PAUSED) {
execute_seek(desired_position, data);
} else {
GST_DEBUG ("Scheduling seek to %" GST_TIME_FORMAT " for later", GST_TIME_ARGS (desired_position));
data->desired_position = desired_position;
}
}
void state_changed_cb(GstBus *bus, GstMessage *msg, CustomData *data)
{
GstState old_state, new_state, pending_state;
gst_message_parse_state_changed(msg, &old_state, &new_state, &pending_state);
/* Only pay attention to messages coming from the pipeline, not its children */
if (GST_MESSAGE_SRC(msg) == GST_OBJECT(data->pipeline))
{
data->state = new_state;
if (new_state == GST_STATE_PLAYING)
{
data->buffering_time = 0;
gplayer_playback_running(data);
if (GST_CLOCK_TIME_IS_VALID(data->desired_position))
{
execute_seek(data->desired_position, data);
}
}
}
}
/* Notify UI about pipeline state changes */
static void state_changed_cb (GstBus *bus, GstMessage *msg, CustomData *data) {
GstState old_state, new_state, pending_state;
gst_message_parse_state_changed (msg, &old_state, &new_state, &pending_state);
/* Only pay attention to messages coming from the pipeline, not its children */
if (GST_MESSAGE_SRC (msg) == GST_OBJECT (data->pipeline)) {
data->state = new_state;
gchar *message = g_strdup_printf("State changed to %s", gst_element_state_get_name(new_state));
set_ui_message(message, data);
g_free (message);
/* The Ready to Paused state change is particularly interesting: */
if (old_state == GST_STATE_READY && new_state == GST_STATE_PAUSED) {
/* By now the sink already knows the media size */
check_media_size(data);
/* If there was a scheduled seek, perform it now that we have moved to the Paused state */
if (GST_CLOCK_TIME_IS_VALID (data->desired_position))
execute_seek (data->desired_position, data);
}
}
}
/* Called when the End Of the Stream is reached. Just move to the beginning of the media and pause. */
static void eos_cb (GstBus *bus, GstMessage *msg, CustomData *data) {
data->target_state = GST_STATE_PAUSED;
data->is_live = (gst_element_set_state (data->pipeline, GST_STATE_PAUSED) == GST_STATE_CHANGE_NO_PREROLL);
execute_seek (0, data);
}
/* Delayed seek callback. This gets called by the timer setup in the above function. */
static gboolean delayed_seek_cb (CustomData *data) {
GST_DEBUG ("Doing delayed seek to %" GST_TIME_FORMAT, GST_TIME_ARGS (data->desired_position));
execute_seek (data->desired_position, data);
return FALSE;
}