gstreamer/ext/opencv/gstcvsmooth.cpp

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/*
* 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-cvsmooth
*
* Smooths the image using thes cvSmooth OpenCV function.
*
* <refsect2>
* <title>Example launch line</title>
* |[
* gst-launch-1.0 videotestsrc ! cvsmooth ! videoconvert ! autovideosink
* ]|
* </refsect2>
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include "gst/opencv/gstopencvutils.h"
#include "gstcvsmooth.h"
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#include <opencv2/imgproc.hpp>
GST_DEBUG_CATEGORY_STATIC (gst_cv_smooth_debug);
#define GST_CAT_DEFAULT gst_cv_smooth_debug
using namespace cv;
/* Filter signals and args */
enum
{
/* FILL ME */
LAST_SIGNAL
};
enum
{
PROP_0,
PROP_SMOOTH_TYPE,
PROP_KERNELWIDTH,
PROP_KERNELHEIGHT,
PROP_COLORSIGMA,
PROP_SPATIALSIGMA,
PROP_POSITION_X,
PROP_POSITION_Y,
PROP_WIDTH,
PROP_HEIGHT
};
/* 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.
*/
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enum GstCvSmoothMethod
{
GST_SMOOTH_BLUR = 1,
GST_SMOOTH_GAUSSIAN = 2,
GST_SMOOTH_MEDIAN = 3,
GST_SMOOTH_BILATERAL = 4
};
#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[] = {
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{GST_SMOOTH_BLUR, "CV Blur", "blur"},
{GST_SMOOTH_GAUSSIAN, "CV Gaussian", "gaussian"},
{GST_SMOOTH_MEDIAN, "CV Median", "median"},
{GST_SMOOTH_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;
}
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#define DEFAULT_CV_SMOOTH_TYPE GST_SMOOTH_GAUSSIAN
#define DEFAULT_KERNELWIDTH 3
#define DEFAULT_KERNELHEIGHT 3
#define DEFAULT_COLORSIGMA 0.0
#define DEFAULT_SPATIALSIGMA 0.0
#define DEFAULT_POSITION_X 0
#define DEFAULT_POSITION_Y 0
#define DEFAULT_WIDTH G_MAXINT
#define DEFAULT_HEIGHT G_MAXINT
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 *
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filter, GstBuffer * buf, Mat img);
/* 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;
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,
(GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS))
);
g_object_class_install_property (gobject_class, PROP_KERNELWIDTH,
g_param_spec_int ("kernel-width", "kernel width",
"The gaussian kernel width (must be positive and odd)."
"If type is median, this means the aperture linear size."
"Check OpenCV docs: http://docs.opencv.org"
"/2.4/modules/imgproc/doc/filtering.htm",
1, G_MAXINT, DEFAULT_KERNELWIDTH,
(GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
g_object_class_install_property (gobject_class, PROP_KERNELHEIGHT,
g_param_spec_int ("kernel-height", "kernel height",
"The gaussian kernel height (must be positive and odd).",
0, G_MAXINT, DEFAULT_KERNELHEIGHT,
(GParamFlags) (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 "
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"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.",
0, G_MAXDOUBLE, DEFAULT_COLORSIGMA,
(GParamFlags) (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.",
0, G_MAXDOUBLE, DEFAULT_SPATIALSIGMA,
(GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
g_object_class_install_property (gobject_class, PROP_POSITION_X,
g_param_spec_int ("position-x", "starting x position for blur",
"Starting x position for blur (in pixels).",
0, G_MAXINT, DEFAULT_POSITION_X,
(GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
g_object_class_install_property (gobject_class, PROP_POSITION_Y,
g_param_spec_int ("position-y", "starting y position for blur",
"Starting y position for blur (in pixels).",
0, G_MAXINT, DEFAULT_POSITION_Y,
(GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
g_object_class_install_property (gobject_class, PROP_WIDTH,
g_param_spec_int ("width", "width of area to blur",
"Width of the area to blur (in pixels).",
0, G_MAXINT, DEFAULT_WIDTH,
(GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
g_object_class_install_property (gobject_class, PROP_HEIGHT,
g_param_spec_int ("height", "height of area to blur",
"Height of the area to blur (in pixels).",
0, G_MAXINT, DEFAULT_HEIGHT,
(GParamFlags) (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);
gst_caps_unref (caps);
}
/* 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->kernelwidth = DEFAULT_KERNELWIDTH;
filter->kernelheight = DEFAULT_KERNELHEIGHT;
filter->colorsigma = DEFAULT_COLORSIGMA;
filter->spatialsigma = DEFAULT_SPATIALSIGMA;
filter->positionx = DEFAULT_POSITION_X;
filter->positiony = DEFAULT_POSITION_Y;
filter->width = DEFAULT_WIDTH;
filter->height = DEFAULT_HEIGHT;
gst_opencv_video_filter_set_in_place (GST_OPENCV_VIDEO_FILTER_CAST (filter),
TRUE);
}
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) {
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case GST_SMOOTH_GAUSSIAN:
case GST_SMOOTH_BLUR:
gst_opencv_video_filter_set_in_place (GST_OPENCV_VIDEO_FILTER_CAST
(filter), TRUE);
break;
default:
gst_opencv_video_filter_set_in_place (GST_OPENCV_VIDEO_FILTER_CAST
(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_KERNELWIDTH:{
gint prop = g_value_get_int (value);
if (prop % 2 == 1) {
filter->kernelwidth = prop;
} else {
GST_WARNING_OBJECT (filter, "Ignoring value for kernel-width, not odd"
"(%d)", prop);
}
}
break;
case PROP_KERNELHEIGHT:{
gint prop = g_value_get_int (value);
if (prop % 2 == 1) {
filter->kernelheight = prop;
} else {
GST_WARNING_OBJECT (filter, "Ignoring value for kernel-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;
case PROP_POSITION_X:
filter->positionx = g_value_get_int (value);
break;
case PROP_POSITION_Y:
filter->positiony = g_value_get_int (value);
break;
case PROP_WIDTH:
filter->width = g_value_get_int (value);
break;
case PROP_HEIGHT:
filter->height = g_value_get_int (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_KERNELWIDTH:
g_value_set_int (value, filter->kernelwidth);
break;
case PROP_KERNELHEIGHT:
g_value_set_int (value, filter->kernelheight);
break;
case PROP_COLORSIGMA:
g_value_set_double (value, filter->colorsigma);
break;
case PROP_SPATIALSIGMA:
g_value_set_double (value, filter->spatialsigma);
break;
case PROP_POSITION_X:
g_value_set_int (value, filter->positionx);
break;
case PROP_POSITION_Y:
g_value_set_int (value, filter->positiony);
break;
case PROP_WIDTH:
g_value_set_int (value, filter->width);
break;
case PROP_HEIGHT:
g_value_set_int (value, filter->height);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static GstFlowReturn
gst_cv_smooth_transform_ip (GstOpencvVideoFilter * base, GstBuffer * buf,
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Mat img)
{
GstCvSmooth *filter = GST_CV_SMOOTH (base);
if (filter->positionx != 0 || filter->positiony != 0 ||
filter->width != G_MAXINT || filter->height != G_MAXINT) {
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Size mat_size = img.size ();
/* if the effect would start outside the image, just skip it */
if (filter->positionx >= mat_size.width
|| filter->positiony >= mat_size.height)
return GST_FLOW_OK;
/* explicitly account for empty area */
if (filter->width <= 0 || filter->height <= 0)
return GST_FLOW_OK;
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Rect mat_rect (filter->positionx,
filter->positiony,
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MIN (filter->width, mat_size.width - filter->positionx),
MIN (filter->height, mat_size.height - filter->positiony));
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img = img (mat_rect);
}
switch (filter->type) {
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case GST_SMOOTH_BLUR:
blur (img, img, Size (filter->kernelwidth, filter->kernelheight),
Point (-1, -1));
break;
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case GST_SMOOTH_GAUSSIAN:
GaussianBlur (img, img, Size (filter->kernelwidth, filter->kernelheight),
filter->colorsigma, filter->colorsigma);
break;
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case GST_SMOOTH_MEDIAN:
medianBlur (img, img, filter->kernelwidth);
break;
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case GST_SMOOTH_BILATERAL:
bilateralFilter (img, img, -1, filter->colorsigma, 0.0);
break;
default:
break;
}
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);
}