summaryrefslogtreecommitdiff
path: root/ext/opencv/gstcvsmooth.c
blob: 169fd16049dee54549ed98f0f81d2f6b42210c90 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
/*
 * 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.
 */

#ifdef HAVE_CONFIG_H
#  include <config.h>
#endif

#include <gst/gst.h>

#include "gstopencvutils.h"
#include "gstcvsmooth.h"
#include <opencv2/imgproc/imgproc_c.h>

GST_DEBUG_CATEGORY_STATIC (gst_cv_smooth_debug);
#define GST_CAT_DEFAULT gst_cv_smooth_debug

/* Filter signals and args */
enum
{
  /* FILL ME */
  LAST_SIGNAL
};
enum
{
  PROP_0,
  PROP_SMOOTH_TYPE,
  PROP_WIDTH,
  PROP_HEIGHT,
  PROP_COLORSIGMA,
  PROP_SPATIALSIGMA
};

/* blur-no-scale only handle: gray 8bits -> gray 16bits
 * FIXME there is no way in base transform to override pad's getcaps
 * to be property-sensitive, instead of using the template caps as
 * the base caps, this might lead us to negotiating rgb in this
 * smooth type.
 *
 * Keep it deactivated for now.
 */

#define GST_TYPE_CV_SMOOTH_TYPE (gst_cv_smooth_type_get_type ())
static GType
gst_cv_smooth_type_get_type (void)
{
  static GType cv_smooth_type_type = 0;

  static const GEnumValue smooth_types[] = {
/*    {CV_BLUR_NO_SCALE, "CV Blur No Scale", "blur-no-scale"}, */
    {CV_BLUR, "CV Blur", "blur"},
    {CV_GAUSSIAN, "CV Gaussian", "gaussian"},
    {CV_MEDIAN, "CV Median", "median"},
    {CV_BILATERAL, "CV Bilateral", "bilateral"},
    {0, NULL, NULL},
  };

  if (!cv_smooth_type_type) {
    cv_smooth_type_type =
        g_enum_register_static ("GstCvSmoothTypeType", smooth_types);
  }
  return cv_smooth_type_type;
}

#define DEFAULT_CV_SMOOTH_TYPE CV_GAUSSIAN
#define DEFAULT_WIDTH 3
#define DEFAULT_HEIGHT 0
#define DEFAULT_COLORSIGMA 0.0
#define DEFAULT_SPATIALSIGMA 0.0

G_DEFINE_TYPE (GstCvSmooth, gst_cv_smooth, GST_TYPE_OPENCV_VIDEO_FILTER);

static void gst_cv_smooth_set_property (GObject * object, guint prop_id,
    const GValue * value, GParamSpec * pspec);
static void gst_cv_smooth_get_property (GObject * object, guint prop_id,
    GValue * value, GParamSpec * pspec);

static GstFlowReturn gst_cv_smooth_transform_ip (GstOpencvVideoFilter *
    filter, GstBuffer * buf, IplImage * img);
static GstFlowReturn gst_cv_smooth_transform (GstOpencvVideoFilter * filter,
    GstBuffer * buf, IplImage * img, GstBuffer * outbuf, IplImage * outimg);

/* initialize the cvsmooth's class */
static void
gst_cv_smooth_class_init (GstCvSmoothClass * klass)
{
  GObjectClass *gobject_class;
  GstOpencvVideoFilterClass *gstopencvbasefilter_class;
  GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
  GstCaps *caps;
  GstPadTemplate *templ;

  gobject_class = (GObjectClass *) klass;
  gstopencvbasefilter_class = (GstOpencvVideoFilterClass *) klass;

  gobject_class->set_property = gst_cv_smooth_set_property;
  gobject_class->get_property = gst_cv_smooth_get_property;

  gstopencvbasefilter_class->cv_trans_ip_func = gst_cv_smooth_transform_ip;
  gstopencvbasefilter_class->cv_trans_func = gst_cv_smooth_transform;

  g_object_class_install_property (gobject_class, PROP_SMOOTH_TYPE,
      g_param_spec_enum ("type",
          "type",
          "Smooth Type",
          GST_TYPE_CV_SMOOTH_TYPE,
          DEFAULT_CV_SMOOTH_TYPE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)
      );
  g_object_class_install_property (gobject_class, PROP_WIDTH,
      g_param_spec_int ("width", "width (aperture width)",
          "The aperture width (Must be positive and odd)."
          "Check cvSmooth OpenCV docs: http://opencv.willowgarage.com"
          "/documentation/image_filtering.html#cvSmooth", 1, G_MAXINT,
          DEFAULT_WIDTH, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
  g_object_class_install_property (gobject_class, PROP_HEIGHT,
      g_param_spec_int ("height", "height (aperture height)",
          "The aperture height, if zero, the width is used."
          "(Must be positive and odd or zero, unuset in median and bilateral "
          "types). Check cvSmooth OpenCV docs: http://opencv.willowgarage.com"
          "/documentation/image_filtering.html#cvSmooth", 0, G_MAXINT,
          DEFAULT_HEIGHT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
  g_object_class_install_property (gobject_class, PROP_COLORSIGMA,
      g_param_spec_double ("color", "color (gaussian standard deviation or "
          "color sigma",
          "If type is gaussian, this means the standard deviation."
          "If type is bilateral, this means the color-sigma. If zero, "
          "Default values are used."
          "Check cvSmooth OpenCV docs: http://opencv.willowgarage.com"
          "/documentation/image_filtering.html#cvSmooth",
          0, G_MAXDOUBLE, DEFAULT_COLORSIGMA,
          G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
  g_object_class_install_property (gobject_class, PROP_SPATIALSIGMA,
      g_param_spec_double ("spatial", "spatial (spatial sigma, bilateral only)",
          "Only used in bilateral type, means the spatial-sigma."
          "Check cvSmooth OpenCV docs: http://opencv.willowgarage.com"
          "/documentation/image_filtering.html#cvSmooth",
          0, G_MAXDOUBLE, DEFAULT_SPATIALSIGMA,
          G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));

  gst_element_class_set_static_metadata (element_class,
      "cvsmooth",
      "Transform/Effect/Video",
      "Applies cvSmooth OpenCV function to the image",
      "Thiago Santos<thiago.sousa.santos@collabora.co.uk>");

  /* add sink and source pad templates */
  caps = gst_opencv_caps_from_cv_image_type (CV_8UC3);
  gst_caps_append (caps, gst_opencv_caps_from_cv_image_type (CV_8UC1));
  templ = gst_pad_template_new ("sink", GST_PAD_SINK, GST_PAD_ALWAYS,
      gst_caps_ref (caps));
  gst_element_class_add_pad_template (element_class, templ);
  templ = gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS, caps);
  gst_element_class_add_pad_template (element_class, templ);
}

/* initialize the new element
 * instantiate pads and add them to element
 * set pad calback functions
 * initialize instance structure
 */
static void
gst_cv_smooth_init (GstCvSmooth * filter)
{
  filter->type = DEFAULT_CV_SMOOTH_TYPE;
  filter->width = DEFAULT_WIDTH;
  filter->height = DEFAULT_HEIGHT;
  filter->colorsigma = DEFAULT_COLORSIGMA;
  filter->spatialsigma = DEFAULT_SPATIALSIGMA;

  gst_base_transform_set_in_place (GST_BASE_TRANSFORM (filter), FALSE);
}

static void
gst_cv_smooth_change_type (GstCvSmooth * filter, gint value)
{
  GST_DEBUG_OBJECT (filter, "Changing type from %d to %d", filter->type, value);
  if (filter->type == value)
    return;

  filter->type = value;
  switch (value) {
    case CV_GAUSSIAN:
    case CV_BLUR:
      gst_base_transform_set_in_place (GST_BASE_TRANSFORM (filter), TRUE);
      break;
    default:
      gst_base_transform_set_in_place (GST_BASE_TRANSFORM (filter), FALSE);
      break;
  }
}

static void
gst_cv_smooth_set_property (GObject * object, guint prop_id,
    const GValue * value, GParamSpec * pspec)
{
  GstCvSmooth *filter = GST_CV_SMOOTH (object);

  switch (prop_id) {
    case PROP_SMOOTH_TYPE:
      gst_cv_smooth_change_type (filter, g_value_get_enum (value));
      break;
    case PROP_WIDTH:{
      gint prop = g_value_get_int (value);

      if (prop % 2 == 1) {
        filter->width = prop;
      } else {
        GST_WARNING_OBJECT (filter, "Ignoring value for width, not odd"
            "(%d)", prop);
      }
    }
      break;
    case PROP_HEIGHT:{
      gint prop = g_value_get_int (value);

      if (prop % 2 == 1 || prop == 0) {
        filter->height = prop;
      } else {
        GST_WARNING_OBJECT (filter, "Ignoring value for height, not odd"
            " nor zero (%d)", prop);
      }
    }
      break;
    case PROP_COLORSIGMA:
      filter->colorsigma = g_value_get_double (value);
      break;
    case PROP_SPATIALSIGMA:
      filter->spatialsigma = g_value_get_double (value);
      break;
    default:
      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
      break;
  }
}

static void
gst_cv_smooth_get_property (GObject * object, guint prop_id,
    GValue * value, GParamSpec * pspec)
{
  GstCvSmooth *filter = GST_CV_SMOOTH (object);

  switch (prop_id) {
    case PROP_SMOOTH_TYPE:
      g_value_set_enum (value, filter->type);
      break;
    case PROP_WIDTH:
      g_value_set_int (value, filter->width);
      break;
    case PROP_HEIGHT:
      g_value_set_int (value, filter->height);
      break;
    case PROP_COLORSIGMA:
      g_value_set_double (value, filter->colorsigma);
      break;
    case PROP_SPATIALSIGMA:
      g_value_set_double (value, filter->spatialsigma);
      break;
    default:
      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
      break;
  }
}

static GstFlowReturn
gst_cv_smooth_transform (GstOpencvVideoFilter * base, GstBuffer * buf,
    IplImage * img, GstBuffer * outbuf, IplImage * outimg)
{
  GstCvSmooth *filter = GST_CV_SMOOTH (base);

  cvSmooth (img, outimg, filter->type, filter->width, filter->height,
      filter->colorsigma, filter->spatialsigma);

  return GST_FLOW_OK;
}

static GstFlowReturn
gst_cv_smooth_transform_ip (GstOpencvVideoFilter * base, GstBuffer * buf,
    IplImage * img)
{
  GstCvSmooth *filter = GST_CV_SMOOTH (base);

  cvSmooth (img, img, filter->type, filter->width, filter->height,
      filter->colorsigma, filter->spatialsigma);

  return GST_FLOW_OK;
}

gboolean
gst_cv_smooth_plugin_init (GstPlugin * plugin)
{
  GST_DEBUG_CATEGORY_INIT (gst_cv_smooth_debug, "cvsmooth", 0, "cvsmooth");

  return gst_element_register (plugin, "cvsmooth", GST_RANK_NONE,
      GST_TYPE_CV_SMOOTH);
}