/* Clean up */
static void
gst_face_detect_finalize (GObject * obj)
{
GstFaceDetect *filter = GST_FACE_DETECT (obj);
if (filter->cvGray)
cvReleaseImage (&filter->cvGray);
if (filter->cvStorage)
cvReleaseMemStorage (&filter->cvStorage);
g_free (filter->face_profile);
g_free (filter->nose_profile);
g_free (filter->mouth_profile);
g_free (filter->eyes_profile);
if (filter->cvFaceDetect)
cvReleaseHaarClassifierCascade (&filter->cvFaceDetect);
if (filter->cvNoseDetect)
cvReleaseHaarClassifierCascade (&filter->cvNoseDetect);
if (filter->cvMouthDetect)
cvReleaseHaarClassifierCascade (&filter->cvMouthDetect);
if (filter->cvEyesDetect)
cvReleaseHaarClassifierCascade (&filter->cvEyesDetect);
G_OBJECT_CLASS (gst_face_detect_parent_class)->finalize (obj);
}
static void
gst_face_detect_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstFaceDetect *filter = GST_FACE_DETECT (object);
switch (prop_id) {
case PROP_FACE_PROFILE:
g_value_set_string (value, filter->face_profile);
break;
case PROP_NOSE_PROFILE:
g_value_set_string (value, filter->nose_profile);
break;
case PROP_MOUTH_PROFILE:
g_value_set_string (value, filter->mouth_profile);
break;
case PROP_EYES_PROFILE:
g_value_set_string (value, filter->eyes_profile);
break;
case PROP_DISPLAY:
g_value_set_boolean (value, filter->display);
break;
case PROP_SCALE_FACTOR:
g_value_set_double (value, filter->scale_factor);
break;
case PROP_MIN_NEIGHBORS:
g_value_set_int (value, filter->min_neighbors);
break;
case PROP_MIN_SIZE_WIDTH:
g_value_set_int (value, filter->min_size_width);
break;
case PROP_MIN_SIZE_HEIGHT:
g_value_set_int (value, filter->min_size_height);
break;
case PROP_MIN_STDDEV:
g_value_set_int (value, filter->min_stddev);
break;
case PROP_FLAGS:
g_value_set_flags (value, filter->flags);
break;
case PROP_UPDATES:
g_value_set_enum (value, filter->updates);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
/* this function handles the link with other elements */
static gboolean
gst_face_detect_set_caps (GstOpencvVideoFilter * transform, gint in_width,
gint in_height, gint in_depth, gint in_channels,
gint out_width, gint out_height, gint out_depth, gint out_channels)
{
GstFaceDetect *filter;
filter = GST_FACE_DETECT (transform);
if (filter->cvGray)
cvReleaseImage (&filter->cvGray);
filter->cvGray = cvCreateImage (cvSize (in_width, in_height), IPL_DEPTH_8U,
1);
if (!filter->cvStorage)
filter->cvStorage = cvCreateMemStorage (0);
else
cvClearMemStorage (filter->cvStorage);
return TRUE;
}
/*
* Performs the face detection
*/
static GstFlowReturn
gst_face_detect_transform_ip (GstOpencvVideoFilter * base, GstBuffer * buf,
IplImage * img)
{
GstFaceDetect *filter = GST_FACE_DETECT (base);
if (filter->cvFaceDetect) {
GstMessage *msg = NULL;
GstStructure *s;
GValue facelist = { 0 };
GValue facedata = { 0 };
CvSeq *faces;
CvSeq *mouth = NULL, *nose = NULL, *eyes = NULL;
gint i;
gboolean do_display = FALSE;
if (filter->display) {
if (gst_buffer_is_writable (buf)) {
do_display = TRUE;
} else {
GST_LOG_OBJECT (filter, "Buffer is not writable, not drawing faces.");
}
}
cvCvtColor (img, filter->cvGray, CV_RGB2GRAY);
cvClearMemStorage (filter->cvStorage);
faces = gst_face_detect_run_detector (filter, filter->cvFaceDetect,
filter->min_size_width, filter->min_size_height);
msg = gst_face_detect_message_new (filter, buf);
g_value_init (&facelist, GST_TYPE_LIST);
for (i = 0; i < (faces ? faces->total : 0); i++) {
CvRect *r = (CvRect *) cvGetSeqElem (faces, i);
guint mw = filter->min_size_width / 8;
guint mh = filter->min_size_height / 8;
guint rnx = 0, rny = 0, rnw, rnh;
guint rmx = 0, rmy = 0, rmw, rmh;
guint rex = 0, rey = 0, rew, reh;
gboolean have_nose, have_mouth, have_eyes;
/* detect face features */
if (filter->cvNoseDetect) {
rnx = r->x + r->width / 4;
rny = r->y + r->height / 4;
rnw = r->width / 2;
rnh = r->height / 2;
cvSetImageROI (filter->cvGray, cvRect (rnx, rny, rnw, rnh));
nose =
gst_face_detect_run_detector (filter, filter->cvNoseDetect, mw, mh);
have_nose = (nose && nose->total);
cvResetImageROI (filter->cvGray);
} else {
have_nose = FALSE;
}
if (filter->cvMouthDetect) {
rmx = r->x;
rmy = r->y + r->height / 2;
rmw = r->width;
rmh = r->height / 2;
cvSetImageROI (filter->cvGray, cvRect (rmx, rmy, rmw, rmh));
mouth =
gst_face_detect_run_detector (filter, filter->cvMouthDetect, mw,
mh);
have_mouth = (mouth && mouth->total);
cvResetImageROI (filter->cvGray);
} else {
have_mouth = FALSE;
}
if (filter->cvEyesDetect) {
rex = r->x;
rey = r->y;
rew = r->width;
reh = r->height / 2;
cvSetImageROI (filter->cvGray, cvRect (rex, rey, rew, reh));
eyes =
gst_face_detect_run_detector (filter, filter->cvEyesDetect, mw, mh);
have_eyes = (eyes && eyes->total);
cvResetImageROI (filter->cvGray);
} else {
have_eyes = FALSE;
}
GST_LOG_OBJECT (filter,
"%2d/%2d: x,y = %4u,%4u: w.h = %4u,%4u : features(e,n,m) = %d,%d,%d",
i, faces->total, r->x, r->y, r->width, r->height,
have_eyes, have_nose, have_mouth);
s = gst_structure_new ("face",
"x", G_TYPE_UINT, r->x,
"y", G_TYPE_UINT, r->y,
"width", G_TYPE_UINT, r->width,
"height", G_TYPE_UINT, r->height, NULL);
if (have_nose) {
CvRect *sr = (CvRect *) cvGetSeqElem (nose, 0);
GST_LOG_OBJECT (filter, "nose/%d: x,y = %4u,%4u: w.h = %4u,%4u",
nose->total, rnx + sr->x, rny + sr->y, sr->width, sr->height);
gst_structure_set (s,
"nose->x", G_TYPE_UINT, rnx + sr->x,
"nose->y", G_TYPE_UINT, rny + sr->y,
"nose->width", G_TYPE_UINT, sr->width,
"nose->height", G_TYPE_UINT, sr->height, NULL);
}
if (have_mouth) {
CvRect *sr = (CvRect *) cvGetSeqElem (mouth, 0);
GST_LOG_OBJECT (filter, "mouth/%d: x,y = %4u,%4u: w.h = %4u,%4u",
mouth->total, rmx + sr->x, rmy + sr->y, sr->width, sr->height);
gst_structure_set (s,
"mouth->x", G_TYPE_UINT, rmx + sr->x,
"mouth->y", G_TYPE_UINT, rmy + sr->y,
"mouth->width", G_TYPE_UINT, sr->width,
"mouth->height", G_TYPE_UINT, sr->height, NULL);
}
if (have_eyes) {
CvRect *sr = (CvRect *) cvGetSeqElem (eyes, 0);
GST_LOG_OBJECT (filter, "eyes/%d: x,y = %4u,%4u: w.h = %4u,%4u",
eyes->total, rex + sr->x, rey + sr->y, sr->width, sr->height);
gst_structure_set (s,
"eyes->x", G_TYPE_UINT, rex + sr->x,
"eyes->y", G_TYPE_UINT, rey + sr->y,
"eyes->width", G_TYPE_UINT, sr->width,
"eyes->height", G_TYPE_UINT, sr->height, NULL);
}
g_value_init (&facedata, GST_TYPE_STRUCTURE);
g_value_take_boxed (&facedata, s);
gst_value_list_append_value (&facelist, &facedata);
g_value_unset (&facedata);
s = NULL;
if (do_display) {
CvPoint center;
CvSize axes;
gdouble w, h;
gint cb = 255 - ((i & 3) << 7);
gint cg = 255 - ((i & 12) << 5);
gint cr = 255 - ((i & 48) << 3);
w = r->width / 2;
h = r->height / 2;
center.x = cvRound ((r->x + w));
center.y = cvRound ((r->y + h));
axes.width = w;
axes.height = h * 1.25; /* tweak for face form */
cvEllipse (img, center, axes, 0.0, 0.0, 360.0, CV_RGB (cr, cg, cb),
3, 8, 0);
if (have_nose) {
CvRect *sr = (CvRect *) cvGetSeqElem (nose, 0);
w = sr->width / 2;
h = sr->height / 2;
center.x = cvRound ((rnx + sr->x + w));
center.y = cvRound ((rny + sr->y + h));
axes.width = w;
axes.height = h * 1.25; /* tweak for nose form */
cvEllipse (img, center, axes, 0.0, 0.0, 360.0, CV_RGB (cr, cg, cb),
1, 8, 0);
}
if (have_mouth) {
CvRect *sr = (CvRect *) cvGetSeqElem (mouth, 0);
w = sr->width / 2;
h = sr->height / 2;
center.x = cvRound ((rmx + sr->x + w));
center.y = cvRound ((rmy + sr->y + h));
axes.width = w * 1.5; /* tweak for mouth form */
axes.height = h;
cvEllipse (img, center, axes, 0.0, 0.0, 360.0, CV_RGB (cr, cg, cb),
1, 8, 0);
}
if (have_eyes) {
CvRect *sr = (CvRect *) cvGetSeqElem (eyes, 0);
w = sr->width / 2;
h = sr->height / 2;
center.x = cvRound ((rex + sr->x + w));
center.y = cvRound ((rey + sr->y + h));
axes.width = w * 1.5; /* tweak for eyes form */
axes.height = h;
cvEllipse (img, center, axes, 0.0, 0.0, 360.0, CV_RGB (cr, cg, cb),
1, 8, 0);
}
}
}
gst_structure_set_value ((GstStructure *) gst_message_get_structure (msg),
"faces", &facelist);
g_value_unset (&facelist);
gst_element_post_message (GST_ELEMENT (filter), msg);
}
return GST_FLOW_OK;
}
static void
gst_face_detect_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstFaceDetect *filter = GST_FACE_DETECT (object);
switch (prop_id) {
case PROP_FACE_PROFILE:
g_free (filter->face_profile);
if (filter->cvFaceDetect)
cvReleaseHaarClassifierCascade (&filter->cvFaceDetect);
filter->face_profile = g_value_dup_string (value);
filter->cvFaceDetect =
gst_face_detect_load_profile (filter, filter->face_profile);
break;
case PROP_NOSE_PROFILE:
g_free (filter->nose_profile);
if (filter->cvNoseDetect)
cvReleaseHaarClassifierCascade (&filter->cvNoseDetect);
filter->nose_profile = g_value_dup_string (value);
filter->cvNoseDetect =
gst_face_detect_load_profile (filter, filter->nose_profile);
break;
case PROP_MOUTH_PROFILE:
g_free (filter->mouth_profile);
if (filter->cvMouthDetect)
cvReleaseHaarClassifierCascade (&filter->cvMouthDetect);
filter->mouth_profile = g_value_dup_string (value);
filter->cvMouthDetect =
gst_face_detect_load_profile (filter, filter->mouth_profile);
break;
case PROP_EYES_PROFILE:
g_free (filter->eyes_profile);
if (filter->cvEyesDetect)
cvReleaseHaarClassifierCascade (&filter->cvEyesDetect);
filter->eyes_profile = g_value_dup_string (value);
filter->cvEyesDetect =
gst_face_detect_load_profile (filter, filter->eyes_profile);
break;
case PROP_DISPLAY:
filter->display = g_value_get_boolean (value);
break;
case PROP_SCALE_FACTOR:
filter->scale_factor = g_value_get_double (value);
break;
case PROP_MIN_NEIGHBORS:
filter->min_neighbors = g_value_get_int (value);
break;
case PROP_MIN_SIZE_WIDTH:
filter->min_size_width = g_value_get_int (value);
break;
case PROP_MIN_SIZE_HEIGHT:
filter->min_size_height = g_value_get_int (value);
break;
case PROP_FLAGS:
filter->flags = g_value_get_flags (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
