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gsthanddetect.h:84: error: expected specifier-qualifier-list before 'uint' https://bugzilla.gnome.org/show_bug.cgi?id=697305
651 lines
23 KiB
C
651 lines
23 KiB
C
/*
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* GStreamer hand gesture detection plugins
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* Copyright (C) 2012 Andol Li <<andol@andol.info>>
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* Copyright (C) 2013 Sreerenj Balachandran <sreerenj.balachandran@intel.com>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*
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* Alternatively, the contents of this file may be used under the
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* GNU Lesser General Public License Version 2.1 (the "LGPL"), in
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* which case the following provisions apply instead of the ones
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* mentioned above:
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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/**
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* SECTION:video-filter-handdetect
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*
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* FIXME:operates hand gesture detection in video streams and images,
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* and enable media operation e.g. play/stop/fast forward/back rewind.
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*
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* <refsect2>
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* <title>Example launch line</title>
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* |[
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* gst-launch-1.0 autovideosrc ! videoconvert ! "video/x-raw, formt=RGB, width=320, height=240" ! \
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* videoscale ! handdetect ! videoconvert ! xvimagesink
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* ]|
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* </refsect2>
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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/* element header */
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#include "gsthanddetect.h"
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#include "gstopencvutils.h"
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GST_DEBUG_CATEGORY_STATIC (gst_handdetect_debug);
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#define GST_CAT_DEFAULT gst_handdetect_debug
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/* define HAAR files */
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#define HAAR_FILE_FIST GST_HAAR_CASCADES_DIR G_DIR_SEPARATOR_S "fist.xml"
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#define HAAR_FILE_PALM GST_HAAR_CASCADES_DIR G_DIR_SEPARATOR_S "palm.xml"
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/* Filter signals and args */
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enum
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{
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/* FILL ME */
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LAST_SIGNAL
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};
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enum
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{
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PROP_0,
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PROP_DISPLAY,
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PROP_PROFILE_FIST,
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PROP_PROFILE_PALM,
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PROP_ROI_X,
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PROP_ROI_Y,
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PROP_ROI_WIDTH,
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PROP_ROI_HEIGHT
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};
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/* the capabilities of the inputs and outputs */
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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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GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("RGB"))
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);
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static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
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GST_PAD_SRC,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("RGB"))
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);
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static void gst_handdetect_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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static void gst_handdetect_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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static gboolean gst_handdetect_set_caps (GstOpencvVideoFilter * transform,
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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 GstFlowReturn gst_handdetect_transform_ip (GstOpencvVideoFilter *
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transform, GstBuffer * buffer, IplImage * img);
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static void gst_handdetect_load_profile (GstHanddetect * filter);
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static void gst_handdetect_navigation_interface_init (GstNavigationInterface *
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iface);
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static void gst_handdetect_navigation_send_event (GstNavigation * navigation,
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GstStructure * structure);
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G_DEFINE_TYPE_WITH_CODE (GstHanddetect, gst_handdetect,
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GST_TYPE_OPENCV_VIDEO_FILTER,
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G_IMPLEMENT_INTERFACE (GST_TYPE_NAVIGATION,
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gst_handdetect_navigation_interface_init););
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static void
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gst_handdetect_navigation_interface_init (GstNavigationInterface * iface)
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{
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iface->send_event = gst_handdetect_navigation_send_event;
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}
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/* FIXME: this function used to parse the region of interests coordinates
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* sending from applications when the hand gestures reach the defined regions of interests,
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* at this moment this function is not doing anything significantly
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* but will be CHANGED when the gstreamer is patched with new hand gesture events
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*/
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static void
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gst_handdetect_navigation_send_event (GstNavigation * navigation,
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GstStructure * structure)
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{
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GstHanddetect *filter = GST_HANDDETECT (navigation);
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GstPad *peer;
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if ((peer = gst_pad_get_peer (GST_BASE_TRANSFORM_CAST (filter)->sinkpad))) {
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GstEvent *event;
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event = gst_event_new_navigation (structure);
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gst_pad_send_event (peer, event);
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gst_object_unref (peer);
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}
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}
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/* clean opencv images and parameters */
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static void
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gst_handdetect_finalize (GObject * obj)
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{
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GstHanddetect *filter = GST_HANDDETECT (obj);
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if (filter->cvImage)
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cvReleaseImage (&filter->cvImage);
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if (filter->cvGray)
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cvReleaseImage (&filter->cvGray);
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g_free (filter->profile_fist);
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g_free (filter->profile_palm);
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G_OBJECT_CLASS (gst_handdetect_parent_class)->finalize (obj);
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}
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/* initialise the HANDDETECT class */
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static void
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gst_handdetect_class_init (GstHanddetectClass * 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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gstopencvbasefilter_class->cv_trans_ip_func = gst_handdetect_transform_ip;
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gstopencvbasefilter_class->cv_set_caps = gst_handdetect_set_caps;
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gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_handdetect_finalize);
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gobject_class->set_property = gst_handdetect_set_property;
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gobject_class->get_property = gst_handdetect_get_property;
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g_object_class_install_property (gobject_class,
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PROP_DISPLAY,
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g_param_spec_boolean ("display",
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"Display",
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"Whether the detected hands are highlighted in output frame",
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TRUE, G_PARAM_READWRITE)
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);
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g_object_class_install_property (gobject_class,
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PROP_PROFILE_FIST,
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g_param_spec_string ("profile_fist",
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"Profile_fist",
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"Location of HAAR cascade file (fist gesture)",
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HAAR_FILE_FIST, G_PARAM_READWRITE)
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);
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g_object_class_install_property (gobject_class,
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PROP_PROFILE_PALM,
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g_param_spec_string ("profile_palm",
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"Profile_palm",
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"Location of HAAR cascade file (palm gesture)",
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HAAR_FILE_PALM, G_PARAM_READWRITE)
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);
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/* FIXME: property name needs fixing */
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g_object_class_install_property (gobject_class,
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PROP_ROI_X,
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g_param_spec_uint ("ROI_X",
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"ROI_X",
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"X of left-top pointer in region of interest \nGestures in the defined region of interest will emit messages",
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0, UINT_MAX, 0, G_PARAM_READWRITE)
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);
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/* FIXME: property name needs fixing */
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g_object_class_install_property (gobject_class,
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PROP_ROI_Y,
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g_param_spec_uint ("ROI_Y",
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"ROI_Y",
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"Y of left-top pointer in region of interest \nGestures in the defined region of interest will emit messages",
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0, UINT_MAX, 0, G_PARAM_READWRITE)
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);
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/* FIXME: property name needs fixing */
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g_object_class_install_property (gobject_class,
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PROP_ROI_WIDTH,
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g_param_spec_uint ("ROI_WIDTH",
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"ROI_WIDTH",
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"WIDTH of left-top pointer in region of interest \nGestures in the defined region of interest will emit messages",
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0, UINT_MAX, 0, G_PARAM_READWRITE)
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);
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/* FIXME: property name needs fixing */
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g_object_class_install_property (gobject_class,
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PROP_ROI_HEIGHT,
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g_param_spec_uint ("ROI_HEIGHT",
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"ROI_HEIGHT",
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"HEIGHT of left-top pointer in region of interest \nGestures in the defined region of interest will emit messages",
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0, UINT_MAX, 0, G_PARAM_READWRITE)
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);
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gst_element_class_set_static_metadata (element_class,
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"handdetect",
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"Filter/Effect/Video",
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"Performs hand gesture detection on videos, providing detected hand positions via bus message and navigation event, and deals with hand gesture events",
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"Andol Li <andol@andol.info>");
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&src_factory));
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&sink_factory));
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}
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/* initialise the new element
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* instantiate pads and add them to element
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* set pad call-back functions
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* initialise instance structure
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*/
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static void
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gst_handdetect_init (GstHanddetect * filter)
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{
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filter->profile_fist = g_strdup (HAAR_FILE_FIST);
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filter->profile_palm = g_strdup (HAAR_FILE_PALM);
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filter->roi_x = 0;
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filter->roi_y = 0;
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filter->roi_width = 0;
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filter->roi_height = 0;
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filter->display = TRUE;
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gst_handdetect_load_profile (filter);
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gst_opencv_video_filter_set_in_place (GST_OPENCV_VIDEO_FILTER_CAST (filter),
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TRUE);
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}
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static void
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gst_handdetect_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec)
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{
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GstHanddetect *filter = GST_HANDDETECT (object);
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switch (prop_id) {
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case PROP_PROFILE_FIST:
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g_free (filter->profile_fist);
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filter->profile_fist = g_value_dup_string (value);
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gst_handdetect_load_profile (filter);
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break;
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case PROP_PROFILE_PALM:
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g_free (filter->profile_palm);
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filter->profile_palm = g_value_dup_string (value);
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gst_handdetect_load_profile (filter);
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break;
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case PROP_DISPLAY:
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filter->display = g_value_get_boolean (value);
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break;
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case PROP_ROI_X:
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filter->roi_x = g_value_get_uint (value);
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break;
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case PROP_ROI_Y:
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filter->roi_y = g_value_get_uint (value);
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break;
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case PROP_ROI_WIDTH:
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filter->roi_width = g_value_get_uint (value);
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break;
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case PROP_ROI_HEIGHT:
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filter->roi_height = g_value_get_uint (value);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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gst_handdetect_get_property (GObject * object, guint prop_id, GValue * value,
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GParamSpec * pspec)
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{
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GstHanddetect *filter = GST_HANDDETECT (object);
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switch (prop_id) {
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case PROP_DISPLAY:
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g_value_set_boolean (value, filter->display);
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break;
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case PROP_PROFILE_FIST:
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g_value_set_string (value, filter->profile_fist);
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break;
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case PROP_PROFILE_PALM:
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g_value_set_string (value, filter->profile_palm);
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break;
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case PROP_ROI_X:
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g_value_set_uint (value, filter->roi_x);
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break;
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case PROP_ROI_Y:
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g_value_set_uint (value, filter->roi_y);
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break;
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case PROP_ROI_WIDTH:
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g_value_set_uint (value, filter->roi_width);
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break;
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case PROP_ROI_HEIGHT:
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g_value_set_uint (value, filter->roi_height);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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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_handdetect_set_caps (GstOpencvVideoFilter * transform,
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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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{
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GstHanddetect *filter;
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filter = GST_HANDDETECT (transform);
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if (filter->cvGray)
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cvReleaseImage (&filter->cvGray);
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filter->cvGray =
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cvCreateImage (cvSize (in_width, in_height), IPL_DEPTH_8U, 1);
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if (filter->cvImage)
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cvReleaseImage (&filter->cvImage);
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filter->cvImage =
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cvCreateImage (cvSize (in_width, in_height), IPL_DEPTH_8U, 3);
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if (!filter->cvStorage)
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filter->cvStorage = cvCreateMemStorage (0);
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else
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cvClearMemStorage (filter->cvStorage);
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if (!filter->cvStorage_palm)
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filter->cvStorage_palm = cvCreateMemStorage (0);
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else
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cvClearMemStorage (filter->cvStorage_palm);
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return TRUE;
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}
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/* Hand detection function
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* This function does the actual processing 'of hand detect and display'
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*/
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static GstFlowReturn
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gst_handdetect_transform_ip (GstOpencvVideoFilter * transform,
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GstBuffer * buffer, IplImage * img)
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{
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GstHanddetect *filter = GST_HANDDETECT (transform);
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GstMapInfo info;
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CvSeq *hands;
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CvRect *r;
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GstStructure *s;
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GstMessage *m;
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int i;
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buffer = gst_buffer_make_writable (buffer);
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gst_buffer_map (buffer, &info, GST_MAP_READWRITE);
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filter->cvImage->imageData = (char *) info.data;
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/* 320 x 240 is with the best detect accuracy, if not, give info */
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if (filter->cvImage->width != 320 || filter->cvImage->height != 240)
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GST_INFO_OBJECT (filter,
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"WARNING: resize to 320 x 240 to have best detect accuracy.\n");
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/* cvt to gray colour space for hand detect */
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cvCvtColor (filter->cvImage, filter->cvGray, CV_RGB2GRAY);
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cvClearMemStorage (filter->cvStorage);
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/* check detection cascades */
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if (!filter->cvCascade_fist || !filter->cvCascade_palm)
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return GST_FLOW_OK;
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/* detect FIST gesture fist */
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hands =
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cvHaarDetectObjects (filter->cvGray, filter->cvCascade_fist,
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filter->cvStorage, 1.1, 2, CV_HAAR_DO_CANNY_PRUNING, cvSize (24, 24)
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#if (CV_MAJOR_VERSION >= 2) && (CV_MINOR_VERSION >= 2)
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, cvSize (0, 0)
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#endif
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);
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/* if FIST gesture detected */
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if (hands && hands->total > 0) {
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int min_distance, distance;
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CvRect temp_r;
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CvPoint c;
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/* set frame buffer writable */
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if (filter->display) {
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buffer = gst_buffer_make_writable (buffer);
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GST_DEBUG_OBJECT (filter, "%d FIST gestures detected\n",
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(int) hands->total);
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}
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/* Go through all detected FIST gestures to get the best one
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* prev_r => previous hand
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* best_r => best hand in this frame
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*/
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/* set min_distance for init comparison */
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min_distance = filter->cvImage->width + filter->cvImage->height;
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/* Init filter->prev_r */
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temp_r = cvRect (0, 0, 0, 0);
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if (filter->prev_r == NULL)
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filter->prev_r = &temp_r;
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/* Get the best FIST gesture */
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for (i = 0; i < (hands ? hands->total : 0); i++) {
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r = (CvRect *) cvGetSeqElem (hands, i);
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distance = (int) sqrt (pow ((r->x - filter->prev_r->x),
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2) + pow ((r->y - filter->prev_r->y), 2));
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if (distance <= min_distance) {
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min_distance = distance;
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filter->best_r = r;
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}
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}
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/* Save best_r as prev_r for next frame comparison */
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filter->prev_r = (CvRect *) filter->best_r;
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/* send msg to app/bus if the detected gesture falls in the region of interest */
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/* get center point of gesture */
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c = cvPoint (filter->best_r->x + filter->best_r->width / 2,
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filter->best_r->y + filter->best_r->height / 2);
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/* send message:
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* if the center point is in the region of interest, OR,
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* if the region of interest remains default as (0,0,0,0)*/
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if ((c.x >= filter->roi_x && c.x <= (filter->roi_x + filter->roi_width)
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&& c.y >= filter->roi_y
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&& c.y <= (filter->roi_y + filter->roi_height))
|
|
|| (filter->roi_x == 0
|
|
&& filter->roi_y == 0
|
|
&& filter->roi_width == 0 && filter->roi_height == 0)) {
|
|
/* Define structure for message post */
|
|
s = gst_structure_new ("hand-gesture",
|
|
"gesture", G_TYPE_STRING, "fist",
|
|
"x", G_TYPE_UINT,
|
|
(guint) (filter->best_r->x + filter->best_r->width * 0.5), "y",
|
|
G_TYPE_UINT,
|
|
(guint) (filter->best_r->y + filter->best_r->height * 0.5), "width",
|
|
G_TYPE_UINT, (guint) filter->best_r->width, "height", G_TYPE_UINT,
|
|
(guint) filter->best_r->height, NULL);
|
|
/* Init message element */
|
|
m = gst_message_new_element (GST_OBJECT (filter), s);
|
|
/* Send message */
|
|
gst_element_post_message (GST_ELEMENT (filter), m);
|
|
|
|
#if 0
|
|
/* send event
|
|
* here we use mouse-move event instead of fist-move or palm-move event
|
|
* !!! this will CHANGE in the future !!!
|
|
* !!! by adding gst_navigation_send_hand_detect_event() in navigation.c !!!
|
|
*/
|
|
gst_navigation_send_mouse_event (GST_NAVIGATION (filter),
|
|
"mouse-move",
|
|
0,
|
|
(double) (filter->best_r->x + filter->best_r->width * 0.5),
|
|
(double) (filter->best_r->y + filter->best_r->height * 0.5));
|
|
#endif
|
|
}
|
|
/* Check filter->display,
|
|
* If TRUE, displaying red circle marker in the out frame */
|
|
if (filter->display) {
|
|
CvPoint center;
|
|
int radius;
|
|
center.x = cvRound ((filter->best_r->x + filter->best_r->width * 0.5));
|
|
center.y = cvRound ((filter->best_r->y + filter->best_r->height * 0.5));
|
|
radius =
|
|
cvRound ((filter->best_r->width + filter->best_r->height) * 0.25);
|
|
cvCircle (filter->cvImage, center, radius, CV_RGB (0, 0, 200), 1, 8, 0);
|
|
}
|
|
} else {
|
|
/* if NO FIST gesture, detecting PALM gesture */
|
|
hands =
|
|
cvHaarDetectObjects (filter->cvGray, filter->cvCascade_palm,
|
|
filter->cvStorage, 1.1, 3, CV_HAAR_DO_CANNY_PRUNING, cvSize (24, 24)
|
|
#if (CV_MAJOR_VERSION >= 2) && (CV_MINOR_VERSION >= 2)
|
|
, cvSize (0, 0)
|
|
#endif
|
|
);
|
|
/* if PALM detected */
|
|
if (hands && hands->total > 0) {
|
|
int min_distance, distance;
|
|
CvRect temp_r;
|
|
CvPoint c;
|
|
/* set frame buffer writable */
|
|
if (filter->display) {
|
|
buffer = gst_buffer_make_writable (buffer);
|
|
GST_DEBUG_OBJECT (filter, "%d PALM gestures detected\n",
|
|
(int) hands->total);
|
|
}
|
|
/* Go through all detected PALM gestures to get the best one
|
|
* prev_r => previous hand
|
|
* best_r => best hand in this frame
|
|
*/
|
|
/* suppose a min_distance for init comparison */
|
|
min_distance = filter->cvImage->width + filter->cvImage->height;
|
|
/* Init filter->prev_r */
|
|
temp_r = cvRect (0, 0, 0, 0);
|
|
if (filter->prev_r == NULL)
|
|
filter->prev_r = &temp_r;
|
|
/* Get the best PALM gesture */
|
|
for (i = 0; i < (hands ? hands->total : 0); i++) {
|
|
r = (CvRect *) cvGetSeqElem (hands, i);
|
|
distance = (int) sqrt (pow ((r->x - filter->prev_r->x),
|
|
2) + pow ((r->y - filter->prev_r->y), 2));
|
|
if (distance <= min_distance) {
|
|
min_distance = distance;
|
|
filter->best_r = r;
|
|
}
|
|
}
|
|
/* Save best_r as prev_r for next frame comparison */
|
|
filter->prev_r = (CvRect *) filter->best_r;
|
|
|
|
/* send msg to app/bus if the detected gesture falls in the region of interest */
|
|
/* get center point of gesture */
|
|
c = cvPoint (filter->best_r->x + filter->best_r->width / 2,
|
|
filter->best_r->y + filter->best_r->height / 2);
|
|
/* send message:
|
|
* if the center point is in the region of interest, OR,
|
|
* if the region of interest remains default as (0,0,0,0)*/
|
|
if ((c.x >= filter->roi_x && c.x <= (filter->roi_x + filter->roi_width)
|
|
&& c.y >= filter->roi_y
|
|
&& c.y <= (filter->roi_y + filter->roi_height))
|
|
|| (filter->roi_x == 0
|
|
&& filter->roi_y == 0
|
|
&& filter->roi_width == 0 && filter->roi_height == 0)) {
|
|
/* Define structure for message post */
|
|
s = gst_structure_new ("hand-gesture",
|
|
"gesture", G_TYPE_STRING, "palm",
|
|
"x", G_TYPE_UINT,
|
|
(guint) (filter->best_r->x + filter->best_r->width * 0.5), "y",
|
|
G_TYPE_UINT,
|
|
(guint) (filter->best_r->y + filter->best_r->height * 0.5), "width",
|
|
G_TYPE_UINT, (guint) filter->best_r->width, "height", G_TYPE_UINT,
|
|
(guint) filter->best_r->height, NULL);
|
|
/* Init message element */
|
|
m = gst_message_new_element (GST_OBJECT (filter), s);
|
|
/* Send message */
|
|
gst_element_post_message (GST_ELEMENT (filter), m);
|
|
|
|
#if 0
|
|
/* send event
|
|
* here we use mouse-move event instead of fist-move or palm-move event
|
|
* !!! this will CHANGE in the future !!!
|
|
* !!! by adding gst_navigation_send_hand_detect_event() in navigation.c !!!
|
|
*/
|
|
gst_navigation_send_mouse_event (GST_NAVIGATION (filter),
|
|
"mouse-move",
|
|
0,
|
|
(double) (filter->best_r->x + filter->best_r->width * 0.5),
|
|
(double) (filter->best_r->y + filter->best_r->height * 0.5));
|
|
|
|
/* or use another way to send upstream navigation event for debug
|
|
*
|
|
* GstEvent *event =
|
|
* gst_event_new_navigation (gst_structure_new
|
|
* ("application/x-gst-navigation", "event", G_TYPE_STRING,
|
|
* "mouse-move",
|
|
* "button", G_TYPE_INT, 0,
|
|
* "pointer_x", G_TYPE_DOUBLE,
|
|
* (double) (filter->best_r->x + filter->best_r->width * 0.5),
|
|
* "pointer_y", G_TYPE_DOUBLE,
|
|
* (double) (filter->best_r->y + filter->best_r->height * 0.5),
|
|
* NULL));
|
|
* gst_pad_send_event (GST_BASE_TRANSFORM_CAST (filter)->srcpad, event);
|
|
*/
|
|
#endif
|
|
}
|
|
/* Check filter->display,
|
|
* If TRUE, displaying red circle marker in the out frame */
|
|
if (filter->display) {
|
|
CvPoint center;
|
|
int radius;
|
|
center.x = cvRound ((filter->best_r->x + filter->best_r->width * 0.5));
|
|
center.y = cvRound ((filter->best_r->y + filter->best_r->height * 0.5));
|
|
radius =
|
|
cvRound ((filter->best_r->width + filter->best_r->height) * 0.25);
|
|
cvCircle (filter->cvImage, center, radius, CV_RGB (0, 0, 200), 1, 8, 0);
|
|
}
|
|
}
|
|
}
|
|
gst_buffer_unmap (buffer, &info);
|
|
/* Push out the incoming buffer */
|
|
return GST_FLOW_OK;
|
|
}
|
|
|
|
static void
|
|
gst_handdetect_load_profile (GstHanddetect * filter)
|
|
{
|
|
GST_DEBUG_OBJECT (filter, "Loading profiles...\n");
|
|
filter->cvCascade_fist =
|
|
(CvHaarClassifierCascade *) cvLoad (filter->profile_fist, 0, 0, 0);
|
|
filter->cvCascade_palm =
|
|
(CvHaarClassifierCascade *) cvLoad (filter->profile_palm, 0, 0, 0);
|
|
if (!filter->cvCascade_fist || !filter->cvCascade_palm)
|
|
GST_WARNING_OBJECT (filter,
|
|
"WARNING: Could not load HAAR classifier cascade: %s.\n",
|
|
filter->profile_fist);
|
|
else
|
|
GST_DEBUG_OBJECT (filter, "Loaded profile %s\n", filter->profile_fist);
|
|
if (!filter->cvCascade_palm)
|
|
GST_WARNING_OBJECT (filter,
|
|
"WARNING: Could not load HAAR classifier cascade: %s.\n",
|
|
filter->profile_palm);
|
|
else
|
|
GST_DEBUG_OBJECT (filter, "Loaded profile %s\n", filter->profile_palm);
|
|
}
|
|
|
|
/* Entry point to initialize the plug-in
|
|
* Initialize the plug-in itself
|
|
* Register the element factories and other features
|
|
*/
|
|
gboolean
|
|
gst_handdetect_plugin_init (GstPlugin * plugin)
|
|
{
|
|
GST_DEBUG_CATEGORY_INIT (gst_handdetect_debug,
|
|
"handdetect", 0, "opencv hand gesture detection");
|
|
return gst_element_register (plugin, "handdetect", GST_RANK_NONE,
|
|
GST_TYPE_HANDDETECT);
|
|
}
|