mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-09-09 05:38:58 +00:00
342 lines
11 KiB
C
342 lines
11 KiB
C
/*
|
|
* GStreamer
|
|
* Copyright (C) 2005 Thomas Vander Stichele <thomas@apestaart.org>
|
|
* Copyright (C) 2005 Ronald S. Bultje <rbultje@ronald.bitfreak.net>
|
|
* Copyright (C) 2008 Michael Sheldon <mike@mikeasoft.com>
|
|
*
|
|
* 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-pyramidsegment
|
|
*
|
|
* Applies pyramid segmentation to a video or image.
|
|
*
|
|
* <refsect2>
|
|
* <title>Example launch line</title>
|
|
* |[
|
|
* gst-launch -v -m fakesrc ! pyramidsegment ! fakesink silent=TRUE
|
|
* ]|
|
|
* </refsect2>
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
# include <config.h>
|
|
#endif
|
|
|
|
#include <gst/gst.h>
|
|
|
|
#include "gstopencvutils.h"
|
|
#include "gstpyramidsegment.h"
|
|
|
|
#define BLOCK_SIZE 1000
|
|
|
|
GST_DEBUG_CATEGORY_STATIC (gst_pyramid_segment_debug);
|
|
#define GST_CAT_DEFAULT gst_pyramid_segment_debug
|
|
|
|
/* Filter signals and args */
|
|
enum
|
|
{
|
|
/* FILL ME */
|
|
LAST_SIGNAL
|
|
};
|
|
|
|
enum
|
|
{
|
|
PROP_0,
|
|
PROP_SILENT,
|
|
PROP_THRESHOLD1,
|
|
PROP_THRESHOLD2,
|
|
PROP_LEVEL
|
|
};
|
|
|
|
/* the capabilities of the inputs and outputs.
|
|
*
|
|
* describe the real formats here.
|
|
*/
|
|
static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink",
|
|
GST_PAD_SINK,
|
|
GST_PAD_ALWAYS,
|
|
GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("RGB"))
|
|
);
|
|
|
|
static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
|
|
GST_PAD_SRC,
|
|
GST_PAD_ALWAYS,
|
|
GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("RGB"))
|
|
);
|
|
|
|
G_DEFINE_TYPE (GstPyramidSegment, gst_pyramid_segment, GST_TYPE_ELEMENT);
|
|
|
|
static void gst_pyramid_segment_set_property (GObject * object, guint prop_id,
|
|
const GValue * value, GParamSpec * pspec);
|
|
static void gst_pyramid_segment_get_property (GObject * object, guint prop_id,
|
|
GValue * value, GParamSpec * pspec);
|
|
|
|
static gboolean gst_pyramid_segment_handle_sink_event (GstPad * pad,
|
|
GstObject * parent, GstEvent * event);
|
|
static GstFlowReturn gst_pyramid_segment_chain (GstPad * pad,
|
|
GstObject * parent, GstBuffer * buf);
|
|
|
|
/* Clean up */
|
|
static void
|
|
gst_pyramid_segment_finalize (GObject * obj)
|
|
{
|
|
GstPyramidSegment *filter = GST_PYRAMID_SEGMENT (obj);
|
|
|
|
if (filter->cvImage != NULL) {
|
|
cvReleaseImage (&filter->cvImage);
|
|
cvReleaseImage (&filter->cvSegmentedImage);
|
|
}
|
|
|
|
G_OBJECT_CLASS (gst_pyramid_segment_parent_class)->finalize (obj);
|
|
}
|
|
|
|
|
|
|
|
/* initialize the pyramidsegment's class */
|
|
static void
|
|
gst_pyramid_segment_class_init (GstPyramidSegmentClass * klass)
|
|
{
|
|
GObjectClass *gobject_class;
|
|
|
|
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
|
|
gobject_class = (GObjectClass *) klass;
|
|
|
|
gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_pyramid_segment_finalize);
|
|
gobject_class->set_property = gst_pyramid_segment_set_property;
|
|
gobject_class->get_property = gst_pyramid_segment_get_property;
|
|
|
|
g_object_class_install_property (gobject_class, PROP_SILENT,
|
|
g_param_spec_boolean ("silent", "Silent", "Produce verbose output ?",
|
|
FALSE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
|
|
|
g_object_class_install_property (gobject_class, PROP_THRESHOLD1,
|
|
g_param_spec_double ("threshold1", "Threshold1",
|
|
"Error threshold for establishing links", 0, 1000, 50,
|
|
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
|
|
|
g_object_class_install_property (gobject_class, PROP_THRESHOLD2,
|
|
g_param_spec_double ("threshold2", "Threshold2",
|
|
"Error threshold for segment clustering", 0, 1000, 60,
|
|
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
|
|
|
g_object_class_install_property (gobject_class, PROP_LEVEL,
|
|
g_param_spec_int ("level", "Level",
|
|
"Maximum level of the pyramid segmentation", 0, 4, 4,
|
|
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
|
|
|
gst_element_class_set_static_metadata (element_class,
|
|
"pyramidsegment",
|
|
"Filter/Effect/Video",
|
|
"Applies pyramid segmentation to a video or image.",
|
|
"Michael Sheldon <mike@mikeasoft.com>");
|
|
|
|
gst_element_class_add_pad_template (element_class,
|
|
gst_static_pad_template_get (&src_factory));
|
|
gst_element_class_add_pad_template (element_class,
|
|
gst_static_pad_template_get (&sink_factory));
|
|
}
|
|
|
|
/* initialize the new element
|
|
* instantiate pads and add them to element
|
|
* set pad calback functions
|
|
* initialize instance structure
|
|
*/
|
|
static void
|
|
gst_pyramid_segment_init (GstPyramidSegment * filter)
|
|
{
|
|
filter->sinkpad = gst_pad_new_from_static_template (&sink_factory, "sink");
|
|
GST_PAD_SET_PROXY_CAPS (filter->sinkpad);
|
|
|
|
gst_pad_set_event_function (filter->sinkpad,
|
|
GST_DEBUG_FUNCPTR (gst_pyramid_segment_handle_sink_event));
|
|
gst_pad_set_chain_function (filter->sinkpad,
|
|
GST_DEBUG_FUNCPTR (gst_pyramid_segment_chain));
|
|
|
|
filter->srcpad = gst_pad_new_from_static_template (&src_factory, "src");
|
|
GST_PAD_SET_PROXY_CAPS (filter->srcpad);
|
|
|
|
gst_element_add_pad (GST_ELEMENT (filter), filter->sinkpad);
|
|
gst_element_add_pad (GST_ELEMENT (filter), filter->srcpad);
|
|
filter->storage = cvCreateMemStorage (BLOCK_SIZE);
|
|
filter->comp =
|
|
cvCreateSeq (0, sizeof (CvSeq), sizeof (CvPoint), filter->storage);
|
|
filter->silent = FALSE;
|
|
filter->threshold1 = 50.0;
|
|
filter->threshold2 = 60.0;
|
|
filter->level = 4;
|
|
}
|
|
|
|
static void
|
|
gst_pyramid_segment_set_property (GObject * object, guint prop_id,
|
|
const GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstPyramidSegment *filter = GST_PYRAMID_SEGMENT (object);
|
|
|
|
switch (prop_id) {
|
|
case PROP_SILENT:
|
|
filter->silent = g_value_get_boolean (value);
|
|
break;
|
|
case PROP_THRESHOLD1:
|
|
filter->threshold1 = g_value_get_double (value);
|
|
break;
|
|
case PROP_THRESHOLD2:
|
|
filter->threshold2 = g_value_get_double (value);
|
|
break;
|
|
case PROP_LEVEL:
|
|
filter->level = g_value_get_int (value);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_pyramid_segment_get_property (GObject * object, guint prop_id,
|
|
GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstPyramidSegment *filter = GST_PYRAMID_SEGMENT (object);
|
|
|
|
switch (prop_id) {
|
|
case PROP_SILENT:
|
|
g_value_set_boolean (value, filter->silent);
|
|
break;
|
|
case PROP_THRESHOLD1:
|
|
g_value_set_double (value, filter->threshold1);
|
|
break;
|
|
case PROP_THRESHOLD2:
|
|
g_value_set_double (value, filter->threshold2);
|
|
break;
|
|
case PROP_LEVEL:
|
|
g_value_set_int (value, filter->level);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* GstElement vmethod implementations */
|
|
|
|
/* this function handles the link with other elements */
|
|
static gboolean
|
|
gst_pyramid_segment_handle_sink_event (GstPad * pad, GstObject * parent,
|
|
GstEvent * event)
|
|
{
|
|
GstPyramidSegment *filter;
|
|
GstVideoInfo info;
|
|
gboolean res = TRUE;
|
|
filter = GST_PYRAMID_SEGMENT (parent);
|
|
|
|
switch (GST_EVENT_TYPE (event)) {
|
|
case GST_EVENT_CAPS:
|
|
{
|
|
GstCaps *caps;
|
|
gst_event_parse_caps (event, &caps);
|
|
gst_video_info_from_caps (&info, caps);
|
|
|
|
filter->cvImage =
|
|
cvCreateImage (cvSize (info.width, info.height), IPL_DEPTH_8U, 3);
|
|
break;
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
|
|
res = gst_pad_event_default (pad, parent, event);
|
|
|
|
return res;
|
|
}
|
|
|
|
/* chain function
|
|
* this function does the actual processing
|
|
*/
|
|
static GstFlowReturn
|
|
gst_pyramid_segment_chain (GstPad * pad, GstObject * parent, GstBuffer * buf)
|
|
{
|
|
GstPyramidSegment *filter;
|
|
GstBuffer *outbuf;
|
|
GstMapInfo info;
|
|
GstMapInfo outinfo;
|
|
|
|
filter = GST_PYRAMID_SEGMENT (GST_OBJECT_PARENT (pad));
|
|
|
|
buf = gst_buffer_make_writable (buf);
|
|
gst_buffer_map (buf, &info, GST_MAP_READWRITE);
|
|
filter->cvImage->imageData = (char *) info.data;
|
|
filter->cvSegmentedImage = cvCloneImage (filter->cvImage);
|
|
|
|
cvPyrSegmentation (filter->cvImage, filter->cvSegmentedImage, filter->storage,
|
|
&(filter->comp), filter->level, filter->threshold1, filter->threshold2);
|
|
|
|
/* TODO look if there is a way in opencv to reuse the image data and
|
|
* delete only the struct headers. Would avoid a memcpy here */
|
|
|
|
outbuf = gst_buffer_new_and_alloc (filter->cvSegmentedImage->imageSize);
|
|
gst_buffer_copy_into (outbuf, buf, GST_BUFFER_COPY_METADATA, 0, -1);
|
|
gst_buffer_map (outbuf, &outinfo, GST_MAP_WRITE);
|
|
memcpy (outinfo.data, filter->cvSegmentedImage->imageData,
|
|
gst_buffer_get_size (outbuf));
|
|
|
|
gst_buffer_unmap (buf, &info);
|
|
gst_buffer_unref (buf);
|
|
cvReleaseImage (&filter->cvSegmentedImage);
|
|
g_assert (filter->cvSegmentedImage == NULL);
|
|
|
|
gst_buffer_unmap (outbuf, &outinfo);
|
|
return gst_pad_push (filter->srcpad, outbuf);
|
|
}
|
|
|
|
|
|
/* entry point to initialize the plug-in
|
|
* initialize the plug-in itself
|
|
* register the element factories and other features
|
|
*/
|
|
gboolean
|
|
gst_pyramid_segment_plugin_init (GstPlugin * plugin)
|
|
{
|
|
/* debug category for fltering log messages */
|
|
GST_DEBUG_CATEGORY_INIT (gst_pyramid_segment_debug, "pyramidsegment",
|
|
0, "Applies pyramid segmentation to a video or image");
|
|
|
|
return gst_element_register (plugin, "pyramidsegment", GST_RANK_NONE,
|
|
GST_TYPE_PYRAMID_SEGMENT);
|
|
}
|