gstreamer/ext/opencv/gstcvsmooth.cpp
Luis de Bethencourt 94c07ed229 opencv: always do cvsmooth in place
After the update to new OpenCV API the transform function using an out
buffer is not necessary. We can always do the transformation in place.
2016-01-08 15:01:52 +00:00

347 lines
11 KiB
C++

/*
* 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 "gstopencvutils.h"
#include "gstcvsmooth.h"
#include <opencv2/imgproc/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_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, "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 3
#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);
/* 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_WIDTH,
g_param_spec_int ("width", "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_WIDTH,
(GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
g_object_class_install_property (gobject_class, PROP_HEIGHT,
g_param_spec_int ("height", "height (kernel height)",
"The gaussian kernel height (must be positive and odd).",
0, G_MAXINT, DEFAULT_HEIGHT,
(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 "
"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)));
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_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) {
case CV_GAUSSIAN:
case CV_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_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) {
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_ip (GstOpencvVideoFilter * base, GstBuffer * buf,
IplImage * img)
{
GstCvSmooth *filter = GST_CV_SMOOTH (base);
switch (filter->type) {
case CV_BLUR:
blur (Mat (img), Mat (img), Size (filter->width, filter->height),
Point (-1, -1));
break;
case CV_GAUSSIAN:
GaussianBlur (Mat (img), Mat (img), Size (filter->width, filter->height),
filter->colorsigma, filter->colorsigma);
break;
case CV_MEDIAN:
medianBlur (Mat (img), Mat (img), filter->width);
break;
case CV_BILATERAL:
bilateralFilter (Mat (img), Mat (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);
}