1 /*
2 * GStreamer
3 * Copyright (C) 2010 Thiago Santos <thiago.sousa.santos@collabora.co.uk>
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice shall be included in
13 * all copies or substantial portions of the Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
22 *
23 * Alternatively, the contents of this file may be used under the
24 * GNU Lesser General Public License Version 2.1 (the "LGPL"), in
25 * which case the following provisions apply instead of the ones
26 * mentioned above:
27 *
28 * This library is free software; you can redistribute it and/or
29 * modify it under the terms of the GNU Library General Public
30 * License as published by the Free Software Foundation; either
31 * version 2 of the License, or (at your option) any later version.
32 *
33 * This library is distributed in the hope that it will be useful,
34 * but WITHOUT ANY WARRANTY; without even the implied warranty of
35 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
36 * Library General Public License for more details.
37 *
38 * You should have received a copy of the GNU Library General Public
39 * License along with this library; if not, write to the
40 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
41 * Boston, MA 02110-1301, USA.
42 */
43
44 /**
45 * SECTION:element-cvdilate
46 *
47 * Dilates the image with the cvDilate OpenCV function.
48 *
49 * <refsect2>
50 * <title>Example launch line</title>
51 * |[
52 * gst-launch-1.0 videotestsrc ! cvdilate ! videoconvert ! autovideosink
53 * ]|
54 * </refsect2>
55 */
56
57 #ifdef HAVE_CONFIG_H
58 # include <config.h>
59 #endif
60
61 #include "gstcvdilate.h"
62 #include <opencv2/core.hpp>
63 #include <opencv2/imgproc.hpp>
64
65 GST_DEBUG_CATEGORY_STATIC (gst_cv_dilate_debug);
66 #define GST_CAT_DEFAULT gst_cv_dilate_debug
67
68 G_DEFINE_TYPE (GstCvDilate, gst_cv_dilate, GST_TYPE_CV_DILATE_ERODE);
69
70 static GstFlowReturn gst_cv_dilate_transform_ip (GstOpencvVideoFilter *
71 filter, GstBuffer * buf, cv::Mat img);
72
73 /* initialize the cvdilate's class */
74 static void
gst_cv_dilate_class_init(GstCvDilateClass * klass)75 gst_cv_dilate_class_init (GstCvDilateClass * klass)
76 {
77 GstOpencvVideoFilterClass *gstopencvbasefilter_class;
78 GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
79
80 gstopencvbasefilter_class = (GstOpencvVideoFilterClass *) klass;
81
82 gstopencvbasefilter_class->cv_trans_ip_func = gst_cv_dilate_transform_ip;
83 gst_element_class_set_static_metadata (element_class,
84 "cvdilate",
85 "Transform/Effect/Video",
86 "Applies cvDilate OpenCV function to the image",
87 "Thiago Santos<thiago.sousa.santos@collabora.co.uk>");
88 }
89
90 /* initialize the new element
91 * instantiate pads and add them to element
92 * set pad calback functions
93 * initialize instance structure
94 */
95 static void
gst_cv_dilate_init(GstCvDilate * filter)96 gst_cv_dilate_init (GstCvDilate * filter)
97 {
98 }
99
100 static GstFlowReturn
gst_cv_dilate_transform_ip(GstOpencvVideoFilter * base,GstBuffer * buf,cv::Mat img)101 gst_cv_dilate_transform_ip (GstOpencvVideoFilter * base, GstBuffer * buf,
102 cv::Mat img)
103 {
104 GstCvDilateErode *filter = GST_CV_DILATE_ERODE (base);
105
106 cv::dilate (img, img, cv::Mat (), cv::Point (-1, -1), filter->iterations);
107
108 return GST_FLOW_OK;
109 }
110
111 gboolean
gst_cv_dilate_plugin_init(GstPlugin * plugin)112 gst_cv_dilate_plugin_init (GstPlugin * plugin)
113 {
114 GST_DEBUG_CATEGORY_INIT (gst_cv_dilate_debug, "cvdilate", 0, "cvdilate");
115
116 return gst_element_register (plugin, "cvdilate", GST_RANK_NONE,
117 GST_TYPE_CV_DILATE);
118 }
119