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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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grabcut: Port to GstOpencvVideoFilter base class
This commit is contained in:
Nicolas Dufresne
parent
ee940b130f
commit
2b43312a55
2 changed files with 37 additions and 33 deletions
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@ -111,7 +111,7 @@ enum
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#define DEFAULT_TEST_MODE FALSE
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#define DEFAULT_SCALE 1.6
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G_DEFINE_TYPE (GstGrabcut, gst_grabcut, GST_TYPE_VIDEO_FILTER);
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G_DEFINE_TYPE (GstGrabcut, gst_grabcut, GST_TYPE_OPENCV_VIDEO_FILTER);
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static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink",
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GST_PAD_SINK,
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GST_PAD_ALWAYS,
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@ -128,11 +128,11 @@ static void gst_grabcut_set_property (GObject * object, guint prop_id,
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static void gst_grabcut_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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static GstFlowReturn gst_grabcut_transform_ip (GstVideoFilter * btrans,
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GstVideoFrame * frame);
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static gboolean gst_grabcut_set_info (GstVideoFilter * filter,
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GstCaps * incaps, GstVideoInfo * in_info,
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GstCaps * outcaps, GstVideoInfo * out_info);
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static GstFlowReturn gst_grabcut_transform_ip (GstOpencvVideoFilter * filter,
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GstBuffer * buf, IplImage * img);
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static gboolean gst_grabcut_set_caps (GstOpencvVideoFilter * filter,
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gint in_width, gint in_height, gint in_depth, gint in_channels,
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gint out_width, gint out_height, gint out_depth, gint out_channels);
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static void gst_grabcut_release_all_pointers (GstGrabcut * filter);
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@ -153,8 +153,9 @@ gst_grabcut_class_init (GstGrabcutClass * klass)
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{
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GObjectClass *gobject_class = (GObjectClass *) klass;
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GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
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GstOpencvVideoFilterClass *cvbasefilter_class =
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(GstOpencvVideoFilterClass *) klass;
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GstBaseTransformClass *btrans_class = (GstBaseTransformClass *) klass;
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GstVideoFilterClass *video_class = (GstVideoFilterClass *) klass;
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gobject_class->set_property = gst_grabcut_set_property;
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gobject_class->get_property = gst_grabcut_get_property;
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@ -162,8 +163,8 @@ gst_grabcut_class_init (GstGrabcutClass * klass)
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btrans_class->stop = gst_grabcut_stop;
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btrans_class->passthrough_on_same_caps = TRUE;
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video_class->transform_frame_ip = gst_grabcut_transform_ip;
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video_class->set_info = gst_grabcut_set_info;
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cvbasefilter_class->cv_trans_ip_func = gst_grabcut_transform_ip;
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cvbasefilter_class->cv_set_caps = gst_grabcut_set_caps;
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g_object_class_install_property (gobject_class, PROP_TEST_MODE,
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g_param_spec_boolean ("test-mode", "test-mode",
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@ -200,7 +201,8 @@ gst_grabcut_init (GstGrabcut * filter)
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{
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filter->test_mode = DEFAULT_TEST_MODE;
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filter->scale = DEFAULT_SCALE;
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gst_base_transform_set_in_place (GST_BASE_TRANSFORM (filter), FALSE);
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gst_opencv_video_filter_set_in_place (GST_OPENCV_VIDEO_FILTER (filter),
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TRUE);
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}
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@ -245,20 +247,20 @@ gst_grabcut_get_property (GObject * object, guint prop_id,
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/* GstElement vmethod implementations */
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/* this function handles the link with other elements */
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static gboolean
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gst_grabcut_set_info (GstVideoFilter * filter,
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GstCaps * incaps, GstVideoInfo * in_info,
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GstCaps * outcaps, GstVideoInfo * out_info)
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gst_grabcut_set_caps (GstOpencvVideoFilter * filter, gint in_width,
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gint in_height, gint in_depth, gint in_channels, gint out_width,
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gint out_height, gint out_depth, gint out_channels)
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{
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GstGrabcut *grabcut = GST_GRABCUT (filter);
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CvSize size;
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size = cvSize (in_info->width, in_info->height);
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/* If cvRGBA is already allocated, it means there's a cap modification,
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so release first all the images. */
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if (NULL != grabcut->cvRGBAin)
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size = cvSize (in_width, in_height);
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/* If cvRGB is already allocated, it means there's a cap modification,
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* so release first all the images. */
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if (!grabcut->cvRGBin)
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gst_grabcut_release_all_pointers (grabcut);
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grabcut->cvRGBAin = cvCreateImageHeader (size, IPL_DEPTH_8U, 4);
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grabcut->cvRGBin = cvCreateImage (size, IPL_DEPTH_8U, 3);
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grabcut->cvA = cvCreateImage (size, IPL_DEPTH_8U, 1);
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@ -279,7 +281,7 @@ gst_grabcut_stop (GstBaseTransform * basesrc)
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{
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GstGrabcut *filter = GST_GRABCUT (basesrc);
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if (filter->cvRGBAin != NULL)
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if (filter->cvRGBin != NULL)
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gst_grabcut_release_all_pointers (filter);
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return TRUE;
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@ -288,7 +290,6 @@ gst_grabcut_stop (GstBaseTransform * basesrc)
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static void
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gst_grabcut_release_all_pointers (GstGrabcut * filter)
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{
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cvReleaseImage (&filter->cvRGBAin);
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cvReleaseImage (&filter->cvRGBin);
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cvReleaseImage (&filter->cvA);
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@ -300,13 +301,14 @@ gst_grabcut_release_all_pointers (GstGrabcut * filter)
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}
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static GstFlowReturn
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gst_grabcut_transform_ip (GstVideoFilter * btrans, GstVideoFrame * frame)
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gst_grabcut_transform_ip (GstOpencvVideoFilter * filter, GstBuffer * buffer,
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IplImage * img)
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{
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GstGrabcut *gc = GST_GRABCUT (btrans);
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GstGrabcut *gc = GST_GRABCUT (filter);
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gint alphapixels;
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GstVideoRegionOfInterestMeta *meta;
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meta = gst_buffer_get_video_region_of_interest_meta (frame->buffer);
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meta = gst_buffer_get_video_region_of_interest_meta (buffer);
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if (meta) {
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gc->facepos.x = (meta->x) - ((gc->scale - 1) * meta->w / 2);
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gc->facepos.y = (meta->y) - ((gc->scale - 1) * meta->h / 2);
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@ -316,11 +318,9 @@ gst_grabcut_transform_ip (GstVideoFilter * btrans, GstVideoFrame * frame)
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memset (&(gc->facepos), 0, sizeof (gc->facepos));
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}
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gc->cvRGBAin->imageData = (char *) GST_VIDEO_FRAME_COMP_DATA (frame, 0);
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/* normally input should be RGBA */
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cvSplit (gc->cvRGBAin, gc->cvA, gc->cvB, gc->cvC, gc->cvD);
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cvCvtColor (gc->cvRGBAin, gc->cvRGBin, CV_BGRA2BGR);
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cvSplit (img, gc->cvA, gc->cvB, gc->cvC, gc->cvD);
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cvCvtColor (img, gc->cvRGBin, CV_BGRA2BGR);
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compose_matrix_from_image (gc->grabcut_mask, gc->cvD);
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/* Pass cvD to grabcut_mask for the graphcut stuff but that only if
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@ -355,10 +355,10 @@ gst_grabcut_transform_ip (GstVideoFilter * btrans, GstVideoFrame * frame)
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cvAnd (gc->grabcut_mask, gc->cvC, gc->cvC, NULL);
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}
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cvMerge (gc->cvA, gc->cvB, gc->cvC, gc->cvD, gc->cvRGBAin);
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cvMerge (gc->cvA, gc->cvB, gc->cvC, gc->cvD, img);
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if (gc->test_mode) {
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cvRectangle (gc->cvRGBAin,
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cvRectangle (img,
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cvPoint (gc->facepos.x, gc->facepos.y),
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cvPoint (gc->facepos.x + gc->facepos.width,
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gc->facepos.y + gc->facepos.height), CV_RGB (255, 0, 255), 1, 8, 0);
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@ -47,6 +47,7 @@
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#include <gst/gst.h>
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#include <gst/video/video.h>
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#include <gst/video/gstvideofilter.h>
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#include <gst/opencv/gstopencvvideofilter.h>
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#include <opencv2/core/core_c.h>
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@ -77,13 +78,16 @@ struct grabcut_params
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struct _GstGrabcut
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{
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GstVideoFilter element;
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GstOpencvVideoFilter parent;
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gint width, height;
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gboolean test_mode;
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gdouble scale; // grow multiplier to apply to input bbox
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IplImage *cvRGBAin, *cvRGBin;
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IplImage *cvA, *cvB, *cvC, *cvD;
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IplImage *cvRGBin;
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IplImage *cvA;
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IplImage *cvB;
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IplImage *cvC;
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IplImage *cvD;
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CvMat *grabcut_mask; // mask created by graphcut
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@ -93,7 +97,7 @@ struct _GstGrabcut
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struct _GstGrabcutClass
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{
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GstVideoFilterClass parent_class;
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GstOpencvVideoFilterClass parent_class;
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};
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GType gst_grabcut_get_type (void);
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