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opencv: update pyramidsegment to GstOpencvVideoFilter
Update pyramidsegment to inherit from GstOpencvVideoFilter instead of from GstElement. This means less code and more uniformity with other OpenCV elements.
This commit is contained in:
Luis de Bethencourt
parent
fafc8e564c
commit
cdaedd74db
2 changed files with 23 additions and 49 deletions
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@ -100,7 +100,8 @@ static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
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GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("RGB"))
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);
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G_DEFINE_TYPE (GstPyramidSegment, gst_pyramid_segment, GST_TYPE_ELEMENT);
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G_DEFINE_TYPE (GstPyramidSegment, gst_pyramid_segment,
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GST_TYPE_OPENCV_VIDEO_FILTER);
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static void gst_pyramid_segment_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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@ -109,8 +110,8 @@ static void gst_pyramid_segment_get_property (GObject * object, guint prop_id,
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static gboolean gst_pyramid_segment_handle_sink_event (GstPad * pad,
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GstObject * parent, GstEvent * event);
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static GstFlowReturn gst_pyramid_segment_chain (GstPad * pad,
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GstObject * parent, GstBuffer * buf);
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static GstFlowReturn gst_pyramid_segment_transform (GstOpencvVideoFilter * base,
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GstBuffer * buf, IplImage * img, GstBuffer * outbuf, IplImage * outimg);
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/* Clean up */
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static void
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@ -118,10 +119,6 @@ gst_pyramid_segment_finalize (GObject * obj)
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{
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GstPyramidSegment *filter = GST_PYRAMID_SEGMENT (obj);
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if (filter->cvImage != NULL) {
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cvReleaseImage (&filter->cvImage);
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}
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cvReleaseMemStorage (&filter->storage);
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G_OBJECT_CLASS (gst_pyramid_segment_parent_class)->finalize (obj);
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@ -132,14 +129,18 @@ static void
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gst_pyramid_segment_class_init (GstPyramidSegmentClass * klass)
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{
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GObjectClass *gobject_class;
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GstOpencvVideoFilterClass *gstopencvbasefilter_class;
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GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
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gobject_class = (GObjectClass *) klass;
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gstopencvbasefilter_class = (GstOpencvVideoFilterClass *) klass;
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gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_pyramid_segment_finalize);
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gobject_class->set_property = gst_pyramid_segment_set_property;
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gobject_class->get_property = gst_pyramid_segment_get_property;
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gstopencvbasefilter_class->cv_trans_func = gst_pyramid_segment_transform;
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g_object_class_install_property (gobject_class, PROP_SILENT,
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g_param_spec_boolean ("silent", "Silent", "Produce verbose output ?",
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FALSE, (GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
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@ -179,19 +180,9 @@ gst_pyramid_segment_class_init (GstPyramidSegmentClass * klass)
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static void
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gst_pyramid_segment_init (GstPyramidSegment * filter)
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{
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filter->sinkpad = gst_pad_new_from_static_template (&sink_factory, "sink");
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GST_PAD_SET_PROXY_CAPS (filter->sinkpad);
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gst_pad_set_event_function (filter->sinkpad,
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gst_pad_set_event_function (GST_BASE_TRANSFORM_SINK_PAD (filter),
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GST_DEBUG_FUNCPTR (gst_pyramid_segment_handle_sink_event));
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gst_pad_set_chain_function (filter->sinkpad,
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GST_DEBUG_FUNCPTR (gst_pyramid_segment_chain));
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filter->srcpad = gst_pad_new_from_static_template (&src_factory, "src");
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GST_PAD_SET_PROXY_CAPS (filter->srcpad);
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gst_element_add_pad (GST_ELEMENT (filter), filter->sinkpad);
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gst_element_add_pad (GST_ELEMENT (filter), filter->srcpad);
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filter->storage = cvCreateMemStorage (BLOCK_SIZE);
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filter->comp =
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cvCreateSeq (0, sizeof (CvSeq), sizeof (CvPoint), filter->storage);
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@ -199,6 +190,9 @@ gst_pyramid_segment_init (GstPyramidSegment * filter)
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filter->threshold1 = 50.0;
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filter->threshold2 = 60.0;
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filter->level = 4;
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gst_opencv_video_filter_set_in_place (GST_OPENCV_VIDEO_FILTER_CAST (filter),
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FALSE);
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}
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static void
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@ -258,10 +252,8 @@ static gboolean
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gst_pyramid_segment_handle_sink_event (GstPad * pad, GstObject * parent,
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GstEvent * event)
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{
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GstPyramidSegment *filter;
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GstVideoInfo info;
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gboolean res = TRUE;
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filter = GST_PYRAMID_SEGMENT (parent);
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switch (GST_EVENT_TYPE (event)) {
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case GST_EVENT_CAPS:
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@ -269,12 +261,6 @@ gst_pyramid_segment_handle_sink_event (GstPad * pad, GstObject * parent,
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GstCaps *caps;
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gst_event_parse_caps (event, &caps);
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gst_video_info_from_caps (&info, caps);
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if (filter->cvImage != NULL) {
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cvReleaseImage (&filter->cvImage);
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}
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filter->cvImage =
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cvCreateImage (cvSize (info.width, info.height), IPL_DEPTH_8U, 3);
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break;
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}
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default:
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@ -290,40 +276,28 @@ gst_pyramid_segment_handle_sink_event (GstPad * pad, GstObject * parent,
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* this function does the actual processing
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*/
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static GstFlowReturn
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gst_pyramid_segment_chain (GstPad * pad, GstObject * parent, GstBuffer * buf)
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gst_pyramid_segment_transform (GstOpencvVideoFilter * base, GstBuffer * buf,
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IplImage * img, GstBuffer * outbuf, IplImage * outimg)
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{
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GstPyramidSegment *filter;
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GstBuffer *outbuf;
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GstMapInfo info;
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GstPyramidSegment *filter = GST_PYRAMID_SEGMENT (base);
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GstMapInfo outinfo;
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filter = GST_PYRAMID_SEGMENT (GST_OBJECT_PARENT (pad));
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filter->cvSegmentedImage = cvCloneImage (img);
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buf = gst_buffer_make_writable (buf);
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gst_buffer_map (buf, &info, (GstMapFlags) GST_MAP_READWRITE);
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filter->cvImage->imageData = (char *) info.data;
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filter->cvSegmentedImage = cvCloneImage (filter->cvImage);
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cvPyrSegmentation (filter->cvImage, filter->cvSegmentedImage, filter->storage,
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cvPyrSegmentation (img, filter->cvSegmentedImage, filter->storage,
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&(filter->comp), filter->level, filter->threshold1, filter->threshold2);
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/* TODO look if there is a way in opencv to reuse the image data and
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* delete only the struct headers. Would avoid a memcpy here */
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outbuf = gst_buffer_new_and_alloc (filter->cvSegmentedImage->imageSize);
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gst_buffer_copy_into (outbuf, buf,
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(GstBufferCopyFlags) GST_BUFFER_COPY_METADATA, 0, -1);
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gst_buffer_map (outbuf, &outinfo, GST_MAP_WRITE);
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memcpy (outinfo.data, filter->cvSegmentedImage->imageData,
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gst_buffer_get_size (outbuf));
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gst_buffer_unmap (buf, &info);
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gst_buffer_unref (buf);
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cvReleaseImage (&filter->cvSegmentedImage);
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g_assert (filter->cvSegmentedImage == NULL);
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gst_buffer_unmap (outbuf, &outinfo);
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return gst_pad_push (filter->srcpad, outbuf);
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return GST_FLOW_OK;
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}
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@ -46,8 +46,7 @@
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#ifndef __GST_PYRAMID_SEGMENT_H__
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#define __GST_PYRAMID_SEGMENT_H__
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#include <gst/gst.h>
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#include <gst/video/video.h>
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#include <gstopencvvideofilter.h>
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#include <opencv2/core/version.hpp>
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#if CV_MAJOR_VERSION * 100 + CV_MINOR_VERSION >= 204
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@ -66,18 +65,19 @@ G_BEGIN_DECLS
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_PYRAMID_SEGMENT))
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#define GST_IS_PYRAMID_SEGMENT_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_PYRAMID_SEGMENT))
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typedef struct _GstPyramidSegment GstPyramidSegment;
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typedef struct _GstPyramidSegmentClass GstPyramidSegmentClass;
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struct _GstPyramidSegment
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{
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GstElement element;
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GstOpencvVideoFilter element;
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GstPad *sinkpad, *srcpad;
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gboolean silent;
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IplImage *cvImage, *cvSegmentedImage;
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IplImage *cvSegmentedImage;
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CvMemStorage *storage;
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@ -90,7 +90,7 @@ struct _GstPyramidSegment
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struct _GstPyramidSegmentClass
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{
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GstElementClass parent_class;
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GstOpencvVideoFilterClass parent_class;
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};
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GType gst_pyramid_segment_get_type (void);
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