void CrowdDetectorFilterImpl::busMessage (GstMessage *message)
{
const GstStructure *st;
gchar *roiID;
const gchar *type;
std::string roiIDStr, typeStr;
if (GST_MESSAGE_SRC (message) != GST_OBJECT (crowdDetector) ||
GST_MESSAGE_TYPE (message) != GST_MESSAGE_ELEMENT) {
return;
}
st = gst_message_get_structure (message);
type = gst_structure_get_name (st);
if (!gst_structure_get (st, "roi", G_TYPE_STRING , &roiID, NULL) ) {
GST_WARNING ("The message does not contain the roi ID");
return;
}
roiIDStr = roiID;
typeStr = type;
g_free (roiID);
if (typeStr == "fluidity-event") {
double fluidity_percentage;
int fluidity_level;
if (! (gst_structure_get (st, "fluidity_percentage", G_TYPE_DOUBLE,
&fluidity_percentage, NULL) ) ) {
GST_WARNING ("The message does not contain the fluidity percentage");
return;
}
if (! (gst_structure_get (st, "fluidity_level", G_TYPE_INT,
&fluidity_level, NULL) ) ) {
GST_WARNING ("The message does not contain the fluidity level");
return;
}
try {
CrowdDetectorFluidity event (shared_from_this(),
CrowdDetectorFluidity::getName(),
fluidity_percentage, fluidity_level,
roiIDStr);
signalCrowdDetectorFluidity (event);
} catch (std::bad_weak_ptr &e) {
}
} else if (typeStr == "occupancy-event") {
double occupancy_percentage;
int occupancy_level;
if (! (gst_structure_get (st, "occupancy_percentage", G_TYPE_DOUBLE,
&occupancy_percentage, NULL) ) ) {
GST_WARNING ("The message does not contain the occupancy percentage");
return;
}
if (! (gst_structure_get (st, "occupancy_level", G_TYPE_INT,
&occupancy_level, NULL) ) ) {
GST_WARNING ("The message does not contain the occupancy level");
return;
}
try {
CrowdDetectorOccupancy event (shared_from_this(),
CrowdDetectorOccupancy::getName(),
occupancy_percentage, occupancy_level,
roiIDStr);
signalCrowdDetectorOccupancy (event);
} catch (std::bad_weak_ptr &e) {
}
} else if (typeStr == "direction-event") {
double direction_angle;
if (! (gst_structure_get (st, "direction_angle", G_TYPE_DOUBLE,
&direction_angle, NULL) ) ) {
GST_WARNING ("The message does not contain the direction angle");
return;
}
try {
CrowdDetectorDirection event ( shared_from_this(),
CrowdDetectorDirection::getName(),
direction_angle, roiIDStr);
signalCrowdDetectorDirection (event);
} catch (std::bad_weak_ptr &e) {
}
} else {
GST_WARNING ("The message does not have the correct name");
}
}
CrowdDetectorFilterImpl::CrowdDetectorFilterImpl (
const std::vector<std::shared_ptr<RegionOfInterest>> &rois,
std::shared_ptr< MediaObjectImpl > parent) :
FilterImpl (parent)
{
GstBus *bus;
std::shared_ptr<MediaPipelineImpl> pipe;
GstStructure *roisStructure;
pipe = std::dynamic_pointer_cast<MediaPipelineImpl> (getMediaPipeline() );
g_object_set (element, "filter-factory", "crowddetector", NULL);
bus = gst_pipeline_get_bus (GST_PIPELINE (pipe->getPipeline() ) );
g_object_get (G_OBJECT (element), "filter", &crowdDetector, NULL);
if (crowdDetector == NULL) {
g_object_unref (bus);
throw KurentoException (MEDIA_OBJECT_NOT_AVAILABLE,
"Media Object not available");
}
roisStructure = gst_structure_new_empty ("Rois");
for (auto roi : rois) {
GstStructure *roiStructureAux = get_structure_from_roi (roi);
gst_structure_set (roisStructure,
roi->getId().c_str(), GST_TYPE_STRUCTURE,
roiStructureAux,
NULL);
gst_structure_free (roiStructureAux);
}
g_object_set (G_OBJECT (crowdDetector), ROIS_PARAM, roisStructure, NULL);
gst_structure_free (roisStructure);
busMessageLambda = [&] (GstMessage * message) {
const GstStructure *st;
gchar *roiID;
const gchar *type;
std::string roiIDStr, typeStr;
if (GST_MESSAGE_SRC (message) != GST_OBJECT (crowdDetector) ||
GST_MESSAGE_TYPE (message) != GST_MESSAGE_ELEMENT) {
return;
}
st = gst_message_get_structure (message);
type = gst_structure_get_name (st);
if (!gst_structure_get (st, "roi", G_TYPE_STRING , &roiID, NULL) ) {
GST_WARNING ("The message does not contain the roi ID");
return;
}
roiIDStr = roiID;
typeStr = type;
g_free (roiID);
if (typeStr == "fluidity-event") {
double fluidity_percentage;
int fluidity_level;
if (! (gst_structure_get (st, "fluidity_percentage", G_TYPE_DOUBLE,
&fluidity_percentage, NULL) ) ) {
GST_WARNING ("The message does not contain the fluidity percentage");
return;
}
if (! (gst_structure_get (st, "fluidity_level", G_TYPE_INT,
&fluidity_level, NULL) ) ) {
GST_WARNING ("The message does not contain the fluidity level");
return;
}
try {
CrowdDetectorFluidity event (fluidity_percentage, fluidity_level, roiIDStr,
shared_from_this(),
CrowdDetectorFluidity::getName() );
signalCrowdDetectorFluidity (event);
} catch (std::bad_weak_ptr &e) {
}
} else if (typeStr == "occupancy-event") {
double occupancy_percentage;
int occupancy_level;
if (! (gst_structure_get (st, "occupancy_percentage", G_TYPE_DOUBLE,
&occupancy_percentage, NULL) ) ) {
GST_WARNING ("The message does not contain the occupancy percentage");
return;
}
if (! (gst_structure_get (st, "occupancy_level", G_TYPE_INT,
&occupancy_level, NULL) ) ) {
GST_WARNING ("The message does not contain the occupancy level");
return;
}
try {
CrowdDetectorOccupancy event (occupancy_level, occupancy_percentage,
roiIDStr, shared_from_this(),
CrowdDetectorOccupancy::getName() );
signalCrowdDetectorOccupancy (event);
} catch (std::bad_weak_ptr &e) {
}
} else if (typeStr == "direction-event") {
double direction_angle;
if (! (gst_structure_get (st, "direction_angle", G_TYPE_DOUBLE,
&direction_angle, NULL) ) ) {
GST_WARNING ("The message does not contain the direction angle");
return;
}
try {
CrowdDetectorDirection event (direction_angle, roiIDStr, shared_from_this(),
CrowdDetectorDirection::getName() );
signalCrowdDetectorDirection (event);
} catch (std::bad_weak_ptr &e) {
}
} else {
GST_WARNING ("The message does not have the correct name");
}
};
bus_handler_id = g_signal_connect (bus, "message",
G_CALLBACK (bus_message_adaptor),
&busMessageLambda);
g_object_unref (bus);
// There is no need to reference crowddetector because its life cycle is the same as the filter life cycle
g_object_unref (crowdDetector);
}
