gstreamer/ext/opencv/gstcvsmooth.c
Josh Doe 6e43f75df3 opencv: fix caps issues and extend supported caps for some elements
Some elements had vague caps, such as "video/x-raw-rgb", which caused problems
at least with textwrite. For other elements, the underlying OpenCV functions
support more than just one image type, so I increased the number of supported
caps.

I created a utility function "gst_opencv_caps_from_cv_image_type", so each
element creates caps directly from OpenCV image types, such as CV_8UC1 for
8-bit grayscale. This function uses gstvideo to create uniform caps.

https://bugzilla.gnome.org/show_bug.cgi?id=635304
2010-11-22 22:25:18 -03:00

356 lines
12 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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <gst/gst.h>
#include "gstopencvutils.h"
#include "gstcvsmooth.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_PARAM1,
PROP_PARAM2,
PROP_PARAM3,
PROP_PARAM4
};
/* 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_PARAM1 3
#define DEFAULT_PARAM2 0.0
#define DEFAULT_PARAM3 0.0
#define DEFAULT_PARAM4 0.0
GST_BOILERPLATE (GstCvSmooth, gst_cv_smooth, GstOpencvVideoFilter,
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);
/* Clean up */
static void
gst_cv_smooth_finalize (GObject * obj)
{
G_OBJECT_CLASS (parent_class)->finalize (obj);
}
/* GObject vmethod implementations */
static void
gst_cv_smooth_base_init (gpointer gclass)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (gclass);
GstCaps *caps;
GstPadTemplate *templ;
gst_element_class_set_details_simple (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);
gst_object_unref (templ);
templ = gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS, caps);
gst_element_class_add_pad_template (element_class, templ);
gst_object_unref (templ);
}
/* initialize the cvsmooth's class */
static void
gst_cv_smooth_class_init (GstCvSmoothClass * klass)
{
GObjectClass *gobject_class;
GstOpencvVideoFilterClass *gstopencvbasefilter_class;
GstElementClass *gstelement_class;
gobject_class = (GObjectClass *) klass;
gstelement_class = (GstElementClass *) klass;
gstopencvbasefilter_class = (GstOpencvVideoFilterClass *) klass;
parent_class = g_type_class_peek_parent (klass);
gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_cv_smooth_finalize);
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_PARAM1,
g_param_spec_int ("param1", "param1 (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_PARAM1, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_PARAM2,
g_param_spec_int ("param2", "param2 (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_PARAM2, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_PARAM3,
g_param_spec_double ("param3", "param3 (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_PARAM3,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_PARAM4,
g_param_spec_double ("param4", "param4 (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_PARAM4,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
}
/* 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, GstCvSmoothClass * gclass)
{
filter->type = DEFAULT_CV_SMOOTH_TYPE;
filter->param1 = DEFAULT_PARAM1;
filter->param2 = DEFAULT_PARAM2;
filter->param3 = DEFAULT_PARAM3;
filter->param4 = DEFAULT_PARAM4;
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_PARAM1:{
gint prop = g_value_get_int (value);
if (prop % 2 == 1) {
filter->param1 = prop;
} else {
GST_WARNING_OBJECT (filter, "Ignoring value for param1, not odd"
"(%d)", prop);
}
}
break;
case PROP_PARAM2:{
gint prop = g_value_get_int (value);
if (prop % 2 == 1 || prop == 0) {
filter->param1 = prop;
} else {
GST_WARNING_OBJECT (filter, "Ignoring value for param2, not odd"
" nor zero (%d)", prop);
}
}
break;
case PROP_PARAM3:
filter->param3 = g_value_get_double (value);
break;
case PROP_PARAM4:
filter->param4 = 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_PARAM1:
g_value_set_int (value, filter->param1);
break;
case PROP_PARAM2:
g_value_set_int (value, filter->param2);
break;
case PROP_PARAM3:
g_value_set_double (value, filter->param3);
break;
case PROP_PARAM4:
g_value_set_double (value, filter->param4);
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->param1, filter->param2,
filter->param3, filter->param4);
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->param1, filter->param2,
filter->param3, filter->param4);
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);
}