/* * GStreamer * Copyright (C) 2010 Thiago Santos <thiago.sousa.santos@collabora.co.uk> * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER * DEALINGS IN THE SOFTWARE. * * Alternatively, the contents of this file may be used under the * GNU Lesser General Public License Version 2.1 (the "LGPL"), in * which case the following provisions apply instead of the ones * mentioned above: * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public * License along with this library; if not, write to the * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, * Boston, MA 02110-1301, USA. */ /** * SECTION:element-cvlaplace * * Applies cvLaplace OpenCV function to the image. * * Example launch line * * |[ * gst-launch-1.0 videotestsrc ! cvlaplace ! videoconvert ! autovideosink * ]| */ #ifdef HAVE_CONFIG_H # include <config.h> #endif #include "gstcvlaplace.h" #include <opencv2/imgproc.hpp> GST_DEBUG_CATEGORY_STATIC (gst_cv_laplace_debug); #define GST_CAT_DEFAULT gst_cv_laplace_debug static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink", GST_PAD_SINK, GST_PAD_ALWAYS, GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("RGB")) ); static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src", GST_PAD_SRC, GST_PAD_ALWAYS, GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("RGB")) ); /* Filter signals and args */ enum { /* FILL ME */ LAST_SIGNAL }; enum { PROP_0, PROP_APERTURE_SIZE, PROP_SCALE, PROP_SHIFT, PROP_MASK }; #define DEFAULT_APERTURE_SIZE 3 #define DEFAULT_SCALE_FACTOR 1.0 #define DEFAULT_SHIFT 0.0 #define DEFAULT_MASK TRUE G_DEFINE_TYPE_WITH_CODE (GstCvLaplace, gst_cv_laplace, GST_TYPE_OPENCV_VIDEO_FILTER, GST_DEBUG_CATEGORY_INIT (gst_cv_laplace_debug, "cvlaplace", 0, "cvlaplace"); ); GST_ELEMENT_REGISTER_DEFINE (cvlaplace, "cvlaplace", GST_RANK_NONE, GST_TYPE_CV_LAPLACE); static void gst_cv_laplace_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec); static void gst_cv_laplace_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec); static GstFlowReturn gst_cv_laplace_transform (GstOpencvVideoFilter * filter, GstBuffer * buf, cv::Mat img, GstBuffer * outbuf, cv::Mat outimg); static gboolean gst_cv_laplace_cv_set_caps (GstOpencvVideoFilter * trans, gint in_width, gint in_height, int in_cv_type, gint out_width, gint out_height, int out_cv_type); /* Clean up */ static void gst_cv_laplace_finalize (GObject * obj) { GstCvLaplace *filter = GST_CV_LAPLACE (obj); filter->intermediary_img.release (); filter->cvGray.release (); filter->Laplace.release (); G_OBJECT_CLASS (gst_cv_laplace_parent_class)->finalize (obj); } /* initialize the cvlaplace's class */ static void gst_cv_laplace_class_init (GstCvLaplaceClass * klass) { GObjectClass *gobject_class; GstOpencvVideoFilterClass *gstopencvbasefilter_class; GstElementClass *element_class = GST_ELEMENT_CLASS (klass); gobject_class = (GObjectClass *) klass; gstopencvbasefilter_class = (GstOpencvVideoFilterClass *) klass; gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_cv_laplace_finalize); gobject_class->set_property = gst_cv_laplace_set_property; gobject_class->get_property = gst_cv_laplace_get_property; gstopencvbasefilter_class->cv_trans_func = gst_cv_laplace_transform; gstopencvbasefilter_class->cv_set_caps = gst_cv_laplace_cv_set_caps; g_object_class_install_property (gobject_class, PROP_APERTURE_SIZE, g_param_spec_int ("aperture-size", "aperture size", "Size of the extended Laplace Kernel (1, 3, 5 or 7)", 1, 7, DEFAULT_APERTURE_SIZE, (GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS))); g_object_class_install_property (gobject_class, PROP_SCALE, g_param_spec_double ("scale", "scale factor", "Scale factor", 0.0, G_MAXDOUBLE, DEFAULT_SCALE_FACTOR, (GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS))); g_object_class_install_property (gobject_class, PROP_SHIFT, g_param_spec_double ("shift", "Shift", "Value added to the scaled source array elements", 0.0, G_MAXDOUBLE, DEFAULT_SHIFT, (GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS))); g_object_class_install_property (gobject_class, PROP_MASK, g_param_spec_boolean ("mask", "Mask", "Sets whether the detected edges should be used as a mask on the original input or not", DEFAULT_MASK, (GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS))); gst_element_class_add_static_pad_template (element_class, &src_factory); gst_element_class_add_static_pad_template (element_class, &sink_factory); gst_element_class_set_static_metadata (element_class, "cvlaplace", "Transform/Effect/Video", "Applies cvLaplace OpenCV function to the image", "Thiago Santos<thiago.sousa.santos@collabora.co.uk>"); } static void gst_cv_laplace_init (GstCvLaplace * filter) { filter->aperture_size = DEFAULT_APERTURE_SIZE; filter->scale = DEFAULT_SCALE_FACTOR; filter->shift = DEFAULT_SHIFT; filter->mask = DEFAULT_MASK; gst_opencv_video_filter_set_in_place (GST_OPENCV_VIDEO_FILTER_CAST (filter), FALSE); } static gboolean gst_cv_laplace_cv_set_caps (GstOpencvVideoFilter * trans, gint in_width, gint in_height, int in_cv_type, gint out_width, gint out_height, int out_cv_type) { GstCvLaplace *filter = GST_CV_LAPLACE (trans); filter->intermediary_img.create (cv::Size (out_width, out_height), CV_16SC1); filter->cvGray.create (cv::Size (in_width, in_height), CV_8UC1); filter->Laplace.create (cv::Size (in_width, in_height), CV_8UC1); return TRUE; } static void gst_cv_laplace_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec) { GstCvLaplace *filter = GST_CV_LAPLACE (object); switch (prop_id) { case PROP_APERTURE_SIZE:{ gint as = g_value_get_int (value); if (as % 2 != 1) { GST_WARNING_OBJECT (filter, "Invalid value %d for aperture size", as); } else filter->aperture_size = g_value_get_int (value); } break; case PROP_SCALE: filter->scale = g_value_get_double (value); break; case PROP_SHIFT: filter->shift = g_value_get_double (value); break; case PROP_MASK: filter->mask = g_value_get_boolean (value); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void gst_cv_laplace_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec) { GstCvLaplace *filter = GST_CV_LAPLACE (object); switch (prop_id) { case PROP_APERTURE_SIZE: g_value_set_int (value, filter->aperture_size); break; case PROP_SCALE: g_value_set_double (value, filter->scale); break; case PROP_SHIFT: g_value_set_double (value, filter->shift); break; case PROP_MASK: g_value_set_boolean (value, filter->mask); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static GstFlowReturn gst_cv_laplace_transform (GstOpencvVideoFilter * base, GstBuffer * buf, cv::Mat img, GstBuffer * outbuf, cv::Mat outimg) { GstCvLaplace *filter = GST_CV_LAPLACE (base); cv::cvtColor (img, filter->cvGray, cv::COLOR_RGB2GRAY); cv::Laplacian (filter->cvGray, filter->intermediary_img, filter->intermediary_img.depth (), filter->aperture_size); filter->intermediary_img.convertTo (filter->Laplace, filter->Laplace.type (), filter->scale, filter->shift); outimg.setTo (cv::Scalar::all (0)); if (filter->mask) { img.copyTo (outimg, filter->Laplace); } else { cv::cvtColor (filter->Laplace, outimg, cv::COLOR_GRAY2RGB); } return GST_FLOW_OK; }