--- /dev/null
+/*
+ * 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>
+ * Copyright (C) 2009 Noam Lewis <jones.noamle@gmail.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., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+/**
+ * SECTION:element-templatematch
+ *
+ * FIXME:Describe templatematch here.
+ *
+ * <refsect2>
+ * <title>Example launch line</title>
+ * |[
+ * gst-launch-0.10 videotestsrc ! decodebin ! ffmpegcolorspace ! templatematch ! ffmpegcolorspace ! xvimagesink
+ * ]|
+ * </refsect2>
+ */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <gst/gst.h>
+
+#include "gsttemplatematch.h"
+
+GST_DEBUG_CATEGORY_STATIC (gst_templatematch_debug);
+#define GST_CAT_DEFAULT gst_templatematch_debug
+
+#define DEFAULT_TEMPLATE NULL
+
+/* Filter signals and args */
+enum
+{
+ /* FILL ME */
+ LAST_SIGNAL
+};
+
+enum
+{
+ PROP_0,
+ PROP_DISPLAY,
+ PROP_TEMPLATE
+};
+
+/* the capabilities of the inputs and outputs.
+ */
+static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink",
+ GST_PAD_SINK,
+ GST_PAD_ALWAYS,
+ GST_STATIC_CAPS (
+ "video/x-raw-rgb"
+ )
+ );
+
+static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
+ GST_PAD_SRC,
+ GST_PAD_ALWAYS,
+ GST_STATIC_CAPS (
+ "video/x-raw-rgb"
+ )
+ );
+
+GST_BOILERPLATE (GstTemplateMatch, gst_templatematch, GstElement,
+ GST_TYPE_ELEMENT);
+
+static void gst_templatematch_finalize (GObject * object);
+static void gst_templatematch_set_property (GObject * object, guint prop_id,
+ const GValue * value, GParamSpec * pspec);
+static void gst_templatematch_get_property (GObject * object, guint prop_id,
+ GValue * value, GParamSpec * pspec);
+
+static gboolean gst_templatematch_set_caps (GstPad * pad, GstCaps * caps);
+static GstFlowReturn gst_templatematch_chain (GstPad * pad, GstBuffer * buf);
+
+static void gst_templatematch_load_template (GObject * object);
+static void gst_templatematch_match(IplImage *input, IplImage *template,
+ IplImage *dist_image, double *best_res, CvPoint *best_pos, int method);
+
+/* GObject vmethod implementations */
+
+static void
+gst_templatematch_base_init (gpointer gclass)
+{
+ GstElementClass *element_class = GST_ELEMENT_CLASS (gclass);
+
+ gst_element_class_set_details_simple(element_class,
+ "templatematch",
+ "Filter/Effect/Video",
+ "Performs template matching on videos and images, providing detected positions via bus messages",
+ "Noam Lewis <jones.noamle@gmail.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 templatematch's class */
+static void
+gst_templatematch_class_init (GstTemplateMatchClass * klass)
+{
+ GObjectClass *gobject_class;
+ GstElementClass *gstelement_class;
+
+ gobject_class = (GObjectClass *) klass;
+ gstelement_class = (GstElementClass *) klass;
+
+ gobject_class->finalize = gst_templatematch_finalize;
+ gobject_class->set_property = gst_templatematch_set_property;
+ gobject_class->get_property = gst_templatematch_get_property;
+
+ g_object_class_install_property (gobject_class, PROP_DISPLAY,
+ g_param_spec_boolean ("display", "Display", "Sets whether the detected template should be highlighted in the output",
+ TRUE, G_PARAM_READWRITE));
+ g_object_class_install_property (gobject_class, PROP_TEMPLATE,
+ g_param_spec_string ("template", "Template", "Filename of template image",
+ DEFAULT_TEMPLATE, G_PARAM_READWRITE));
+}
+
+/* initialize the new element
+ * instantiate pads and add them to element
+ * set pad calback functions
+ * initialize instance structure
+ */
+static void
+gst_templatematch_init (GstTemplateMatch * filter,
+ GstTemplateMatchClass * gclass)
+{
+ filter->sinkpad = gst_pad_new_from_static_template (&sink_factory, "sink");
+ gst_pad_set_setcaps_function (filter->sinkpad,
+ GST_DEBUG_FUNCPTR(gst_templatematch_set_caps));
+ gst_pad_set_getcaps_function (filter->sinkpad,
+ GST_DEBUG_FUNCPTR(gst_pad_proxy_getcaps));
+ gst_pad_set_chain_function (filter->sinkpad,
+ GST_DEBUG_FUNCPTR(gst_templatematch_chain));
+
+ filter->srcpad = gst_pad_new_from_static_template (&src_factory, "src");
+ gst_pad_set_getcaps_function (filter->srcpad,
+ GST_DEBUG_FUNCPTR(gst_pad_proxy_getcaps));
+
+ gst_element_add_pad (GST_ELEMENT (filter), filter->sinkpad);
+ gst_element_add_pad (GST_ELEMENT (filter), filter->srcpad);
+ filter->template = DEFAULT_TEMPLATE;
+ filter->display = TRUE;
+ filter->cvTemplateImage = NULL;
+ filter->cvDistImage = NULL;
+ filter->cvImage = NULL;
+ gst_templatematch_load_template(filter);
+}
+
+static void
+gst_templatematch_set_property (GObject * object, guint prop_id,
+ const GValue * value, GParamSpec * pspec)
+{
+ GstTemplateMatch *filter = GST_TEMPLATEMATCH (object);
+
+ switch (prop_id) {
+ case PROP_TEMPLATE:
+ filter->template = g_value_get_string (value);
+ gst_templatematch_load_template(filter);
+ break;
+ case PROP_DISPLAY:
+ filter->display = g_value_get_boolean (value);
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static void
+gst_templatematch_get_property (GObject * object, guint prop_id,
+ GValue * value, GParamSpec * pspec)
+{
+ GstTemplateMatch *filter = GST_TEMPLATEMATCH (object);
+
+ switch (prop_id) {
+ case PROP_TEMPLATE:
+ g_value_set_string (value, filter->template);
+ break;
+ case PROP_DISPLAY:
+ g_value_set_boolean (value, filter->display);
+ 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_templatematch_set_caps (GstPad * pad, GstCaps * caps)
+{
+ GstTemplateMatch *filter;
+ GstPad *otherpad;
+ gint width, height;
+ GstStructure *structure;
+
+ filter = GST_TEMPLATEMATCH (gst_pad_get_parent (pad));
+ structure = gst_caps_get_structure (caps, 0);
+ gst_structure_get_int (structure, "width", &width);
+ gst_structure_get_int (structure, "height", &height);
+
+ filter->cvImage = cvCreateImageHeader(cvSize(width, height), IPL_DEPTH_8U, 3);
+
+ otherpad = (pad == filter->srcpad) ? filter->sinkpad : filter->srcpad;
+ gst_object_unref (filter);
+
+ return gst_pad_set_caps (otherpad, caps);
+}
+
+static void gst_templatematch_finalize (GObject * object)
+{
+ GstTemplateMatch *filter;
+ filter = GST_TEMPLATEMATCH (object);
+
+ if (filter->cvImage) {
+ cvReleaseImageHeader(&filter->cvImage);
+ }
+ if (filter->cvDistImage) {
+ cvReleaseImage(&filter->cvDistImage);
+ }
+ if (filter->cvTemplateImage) {
+ cvReleaseImage(&filter->cvTemplateImage);
+ }
+}
+
+/* chain function
+ * this function does the actual processing
+ */
+static GstFlowReturn
+gst_templatematch_chain (GstPad * pad, GstBuffer * buf)
+{
+ GstTemplateMatch *filter;
+ CvPoint best_pos;
+ double best_res;
+ int i;
+
+ filter = GST_TEMPLATEMATCH (GST_OBJECT_PARENT (pad));
+ buf = gst_buffer_make_writable(buf);
+ if ((!filter) || (!buf)) {
+ return GST_FLOW_OK;
+ }
+ filter->cvImage->imageData = (char *) GST_BUFFER_DATA (buf);
+
+
+ if (!filter->cvDistImage) {
+ filter->cvDistImage = cvCreateImage( cvSize(filter->cvImage->width - filter->cvTemplateImage->width + 1,
+ filter->cvImage->height - filter->cvTemplateImage->height + 1),
+ IPL_DEPTH_32F, 1);
+ if (!filter->cvDistImage) {
+ GST_WARNING ("Couldn't create dist image.");
+ }
+ }
+ if (filter->cvTemplateImage) {
+ gst_templatematch_match(filter->cvImage, filter->cvTemplateImage,
+ filter->cvDistImage, &best_res, &best_pos, CV_TM_CCORR);
+
+ GstStructure *s = gst_structure_new ("template_match",
+ "x", G_TYPE_UINT, best_pos.x,
+ "y", G_TYPE_UINT, best_pos.y,
+ "width", G_TYPE_UINT, filter->cvTemplateImage->width,
+ "height", G_TYPE_UINT, filter->cvTemplateImage->height,
+ "result", G_TYPE_DOUBLE, best_res,
+ NULL);
+
+ GstMessage *m = gst_message_new_element (GST_OBJECT (filter), s);
+ gst_element_post_message (GST_ELEMENT (filter), m);
+
+ if (filter->display) {
+ CvPoint corner = best_pos;
+ corner.x += filter->cvTemplateImage->width;
+ corner.y += filter->cvTemplateImage->height;
+ cvRectangle(filter->cvImage, best_pos, corner, CV_RGB(255, 32, 32), 3, 8, 0);
+ }
+
+ }
+
+
+ gst_buffer_set_data(buf, filter->cvImage->imageData, filter->cvImage->imageSize);
+
+ return gst_pad_push (filter->srcpad, buf);
+}
+
+
+
+static void gst_templatematch_match(IplImage *input, IplImage *template,
+ IplImage *dist_image, double *best_res, CvPoint *best_pos, int method)
+{
+ double dist_min = 0, dist_max = 0;
+ CvPoint min_pos, max_pos;
+ cvMatchTemplate(input, template, dist_image, method);
+ cvMinMaxLoc(dist_image, &dist_min, &dist_max, &min_pos, &max_pos, NULL);
+ if ((CV_TM_SQDIFF_NORMED == method) || (CV_TM_SQDIFF == method))
+ {
+ *best_res = dist_min;
+ *best_pos = min_pos;
+ if (CV_TM_SQDIFF_NORMED == method) {
+ *best_res = 1-*best_res;
+ }
+ }
+ else {
+ *best_res = dist_max;
+ *best_pos = max_pos;
+ }
+}
+
+
+static void gst_templatematch_load_template(GObject * object) {
+ GstTemplateMatch *filter = GST_TEMPLATEMATCH (object);
+
+ if (filter->template) {
+ filter->cvTemplateImage = cvLoadImage(filter->template, CV_LOAD_IMAGE_COLOR);
+ if (!filter->cvTemplateImage) {
+ GST_WARNING ("Couldn't load template image: %s.", filter->template);
+ }
+ }
+}
+
+
+/* entry point to initialize the plug-in
+ * initialize the plug-in itself
+ * register the element factories and other features
+ */
+gboolean gst_templatematch_plugin_init (GstPlugin * templatematch)
+{
+ /* debug category for fltering log messages */
+ GST_DEBUG_CATEGORY_INIT (gst_templatematch_debug, "templatematch",
+ 0, "Performs template matching on videos and images, providing detected positions via bus messages");
+
+ return gst_element_register (templatematch, "templatematch", GST_RANK_NONE,
+ GST_TYPE_TEMPLATEMATCH);
+}
+
+
--- /dev/null
+/*
+ * 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., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifndef __GST_TEMPLATEMATCH_H__
+#define __GST_TEMPLATEMATCH_H__
+
+#include <gst/gst.h>
+#include <opencv/cv.h>
+#include <opencv/highgui.h>
+
+G_BEGIN_DECLS
+
+/* #defines don't like whitespacey bits */
+#define GST_TYPE_TEMPLATEMATCH \
+ (gst_templatematch_get_type())
+#define GST_TEMPLATEMATCH(obj) \
+ (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_TEMPLATEMATCH,GstTemplateMatch))
+#define GST_TEMPLATEMATCH_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_TEMPLATEMATCH,GstTemplateMatchClass))
+#define GST_IS_TEMPLATEMATCH(obj) \
+ (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_TEMPLATEMATCH))
+#define GST_IS_TEMPLATEMATCH_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_TEMPLATEMATCH))
+
+typedef struct _GstTemplateMatch GstTemplateMatch;
+typedef struct _GstTemplateMatchClass GstTemplateMatchClass;
+
+struct _GstTemplateMatch
+{
+ GstElement element;
+
+ GstPad *sinkpad, *srcpad;
+
+ gboolean display;
+
+ gchar *template;
+
+ IplImage *cvImage, *cvGray, *cvTemplateImage, *cvDistImage;
+};
+
+struct _GstTemplateMatchClass
+{
+ GstElementClass parent_class;
+};
+
+GType gst_templatematch_get_type (void);
+
+gboolean gst_templatematch_plugin_init (GstPlugin * templatematch);
+
+G_END_DECLS
+
+#endif /* __GST_TEMPLATEMATCH_H__ */
projects / platform / upstream / gstreamer.git / commitdiff