mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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280 lines
9.2 KiB
C++
280 lines
9.2 KiB
C++
/*
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* GStreamer
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* Copyright (C) 2010 Thiago Santos <thiago.sousa.santos@collabora.co.uk>
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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., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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/**
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* SECTION:element-cvlaplace
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*
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* Applies cvLaplace OpenCV function to the image.
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*
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* Example launch line
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*
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* |[
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* gst-launch-1.0 videotestsrc ! cvlaplace ! videoconvert ! autovideosink
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* ]|
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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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#include "gstcvlaplace.h"
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#include <opencv2/imgproc.hpp>
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GST_DEBUG_CATEGORY_STATIC (gst_cv_laplace_debug);
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#define GST_CAT_DEFAULT gst_cv_laplace_debug
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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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/* 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_APERTURE_SIZE,
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PROP_SCALE,
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PROP_SHIFT,
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PROP_MASK
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};
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#define DEFAULT_APERTURE_SIZE 3
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#define DEFAULT_SCALE_FACTOR 1.0
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#define DEFAULT_SHIFT 0.0
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#define DEFAULT_MASK TRUE
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G_DEFINE_TYPE_WITH_CODE (GstCvLaplace, gst_cv_laplace,
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GST_TYPE_OPENCV_VIDEO_FILTER, GST_DEBUG_CATEGORY_INIT (gst_cv_laplace_debug,
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"cvlaplace", 0, "cvlaplace");
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);
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GST_ELEMENT_REGISTER_DEFINE (cvlaplace, "cvlaplace", GST_RANK_NONE,
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GST_TYPE_CV_LAPLACE);
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static void gst_cv_laplace_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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static void gst_cv_laplace_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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static GstFlowReturn gst_cv_laplace_transform (GstOpencvVideoFilter * filter,
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GstBuffer * buf, cv::Mat img, GstBuffer * outbuf, cv::Mat outimg);
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static gboolean gst_cv_laplace_cv_set_caps (GstOpencvVideoFilter * trans,
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gint in_width, gint in_height, int in_cv_type,
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gint out_width, gint out_height, int out_cv_type);
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/* Clean up */
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static void
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gst_cv_laplace_finalize (GObject * obj)
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{
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GstCvLaplace *filter = GST_CV_LAPLACE (obj);
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filter->intermediary_img.release ();
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filter->cvGray.release ();
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filter->Laplace.release ();
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G_OBJECT_CLASS (gst_cv_laplace_parent_class)->finalize (obj);
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}
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/* initialize the cvlaplace's class */
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static void
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gst_cv_laplace_class_init (GstCvLaplaceClass * 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_cv_laplace_finalize);
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gobject_class->set_property = gst_cv_laplace_set_property;
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gobject_class->get_property = gst_cv_laplace_get_property;
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gstopencvbasefilter_class->cv_trans_func = gst_cv_laplace_transform;
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gstopencvbasefilter_class->cv_set_caps = gst_cv_laplace_cv_set_caps;
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g_object_class_install_property (gobject_class, PROP_APERTURE_SIZE,
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g_param_spec_int ("aperture-size", "aperture size",
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"Size of the extended Laplace Kernel (1, 3, 5 or 7)", 1, 7,
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DEFAULT_APERTURE_SIZE,
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(GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
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g_object_class_install_property (gobject_class, PROP_SCALE,
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g_param_spec_double ("scale", "scale factor", "Scale factor", 0.0,
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G_MAXDOUBLE, DEFAULT_SCALE_FACTOR,
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(GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
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g_object_class_install_property (gobject_class, PROP_SHIFT,
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g_param_spec_double ("shift", "Shift",
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"Value added to the scaled source array elements", 0.0, G_MAXDOUBLE,
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DEFAULT_SHIFT,
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(GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
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g_object_class_install_property (gobject_class, PROP_MASK,
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g_param_spec_boolean ("mask", "Mask",
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"Sets whether the detected edges should be used as a mask on the original input or not",
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DEFAULT_MASK,
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(GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
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gst_element_class_add_static_pad_template (element_class, &src_factory);
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gst_element_class_add_static_pad_template (element_class, &sink_factory);
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gst_element_class_set_static_metadata (element_class,
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"cvlaplace",
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"Transform/Effect/Video",
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"Applies cvLaplace OpenCV function to the image",
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"Thiago Santos<thiago.sousa.santos@collabora.co.uk>");
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}
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static void
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gst_cv_laplace_init (GstCvLaplace * filter)
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{
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filter->aperture_size = DEFAULT_APERTURE_SIZE;
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filter->scale = DEFAULT_SCALE_FACTOR;
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filter->shift = DEFAULT_SHIFT;
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filter->mask = DEFAULT_MASK;
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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 gboolean
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gst_cv_laplace_cv_set_caps (GstOpencvVideoFilter * trans, gint in_width,
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gint in_height, int in_cv_type, gint out_width,
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gint out_height, int out_cv_type)
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{
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GstCvLaplace *filter = GST_CV_LAPLACE (trans);
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filter->intermediary_img.create (cv::Size (out_width, out_height), CV_16SC1);
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filter->cvGray.create (cv::Size (in_width, in_height), CV_8UC1);
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filter->Laplace.create (cv::Size (in_width, in_height), CV_8UC1);
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return TRUE;
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}
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static void
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gst_cv_laplace_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec)
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{
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GstCvLaplace *filter = GST_CV_LAPLACE (object);
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switch (prop_id) {
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case PROP_APERTURE_SIZE:{
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gint as = g_value_get_int (value);
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if (as % 2 != 1) {
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GST_WARNING_OBJECT (filter, "Invalid value %d for aperture size", as);
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} else
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filter->aperture_size = g_value_get_int (value);
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}
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break;
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case PROP_SCALE:
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filter->scale = g_value_get_double (value);
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break;
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case PROP_SHIFT:
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filter->shift = g_value_get_double (value);
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break;
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case PROP_MASK:
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filter->mask = g_value_get_boolean (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_cv_laplace_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec)
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{
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GstCvLaplace *filter = GST_CV_LAPLACE (object);
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switch (prop_id) {
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case PROP_APERTURE_SIZE:
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g_value_set_int (value, filter->aperture_size);
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break;
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case PROP_SCALE:
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g_value_set_double (value, filter->scale);
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break;
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case PROP_SHIFT:
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g_value_set_double (value, filter->shift);
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break;
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case PROP_MASK:
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g_value_set_boolean (value, filter->mask);
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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 GstFlowReturn
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gst_cv_laplace_transform (GstOpencvVideoFilter * base, GstBuffer * buf,
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cv::Mat img, GstBuffer * outbuf, cv::Mat outimg)
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{
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GstCvLaplace *filter = GST_CV_LAPLACE (base);
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cv::cvtColor (img, filter->cvGray, cv::COLOR_RGB2GRAY);
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cv::Laplacian (filter->cvGray, filter->intermediary_img,
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filter->intermediary_img.depth (), filter->aperture_size);
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filter->intermediary_img.convertTo (filter->Laplace, filter->Laplace.type (),
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filter->scale, filter->shift);
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outimg.setTo (cv::Scalar::all (0));
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if (filter->mask) {
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img.copyTo (outimg, filter->Laplace);
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} else {
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cv::cvtColor (filter->Laplace, outimg, cv::COLOR_GRAY2RGB);
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}
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return GST_FLOW_OK;
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}
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