Adds new element cvequalizehist

ext/opencv/basicfilters/Makefile.am

@@ -4,6 +4,7 @@ noinst_LTLIBRARIES = libgstbasicfilters.la
 libgstbasicfilters_la_SOURCES = gstcvsmooth.c \
     gstcvdilateerode.c \
     gstcvdilate.c \
+    gstcvequalizehist.c \
     gstcverode.c
 
 # flags used to compile this pyramidsegment
@@ -16,4 +17,5 @@ libgstbasicfilters_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
 noinst_HEADERS = gstcvsmooth.h \
                  gstcvdilateerode.h \
                  gstcvdilate.h \
+                 gstcvequalizehist.h \
                  gstcverode.h

ext/opencv/basicfilters/gstcvequalizehist.c

@@ -0,0 +1,134 @@
+/*
+ * 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 "gstcvequalizehist.h"
+
+GST_DEBUG_CATEGORY_STATIC (gst_cv_equalize_hist_debug);
+#define GST_CAT_DEFAULT gst_cv_equalize_hist_debug
+
+static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink",
+    GST_PAD_SINK,
+    GST_PAD_ALWAYS,
+    GST_STATIC_CAPS ("video/x-raw-gray, depth=(int)8, bpp=(int)8"));
+
+static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
+    GST_PAD_SRC,
+    GST_PAD_ALWAYS,
+    GST_STATIC_CAPS ("video/x-raw-gray, depth=(int)8, bpp=(int)8"));
+
+GST_BOILERPLATE (GstCvEqualizeHist, gst_cv_equalize_hist,
+    GstOpencvBaseTransform, GST_TYPE_OPENCV_BASE_TRANSFORM);
+
+static GstFlowReturn gst_cv_equalize_hist_transform (
+    GstOpencvBaseTransform * filter, GstBuffer * buf, IplImage * img,
+    GstBuffer * outbuf, IplImage * outimg);
+
+/* Clean up */
+static void
+gst_cv_equalize_hist_finalize (GObject * obj)
+{
+  G_OBJECT_CLASS (parent_class)->finalize (obj);
+}
+
+
+/* GObject vmethod implementations */
+static void
+gst_cv_equalize_hist_base_init (gpointer gclass)
+{
+  GstElementClass *element_class = GST_ELEMENT_CLASS (gclass);
+
+  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));
+
+  gst_element_class_set_details_simple (element_class,
+      "cvequalizehist",
+      "Transform/Effect/Video",
+      "Applies cvEqualizeHist OpenCV function to the image",
+      "Thiago Santos<thiago.sousa.santos@collabora.co.uk>");
+}
+
+static void
+gst_cv_equalize_hist_class_init (GstCvEqualizeHistClass * klass)
+{
+  GObjectClass *gobject_class;
+  GstOpencvBaseTransformClass *gstopencvbasefilter_class;
+
+  gobject_class = (GObjectClass *) klass;
+  gstopencvbasefilter_class = (GstOpencvBaseTransformClass *) klass;
+
+  parent_class = g_type_class_peek_parent (klass);
+  gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_cv_equalize_hist_finalize);
+  gstopencvbasefilter_class->cv_trans_func = gst_cv_equalize_hist_transform;
+}
+
+static void
+gst_cv_equalize_hist_init (GstCvEqualizeHist * filter,
+    GstCvEqualizeHistClass * gclass)
+{
+  gst_base_transform_set_in_place (GST_BASE_TRANSFORM (filter), FALSE);
+}
+
+static GstFlowReturn
+gst_cv_equalize_hist_transform (GstOpencvBaseTransform * base,
+    GstBuffer * buf, IplImage * img, GstBuffer * outbuf, IplImage * outimg)
+{
+  cvEqualizeHist (img, outimg);
+  return GST_FLOW_OK;
+}
+
+gboolean
+gst_cv_equalize_hist_plugin_init (GstPlugin * plugin)
+{
+  GST_DEBUG_CATEGORY_INIT (gst_cv_equalize_hist_debug, "cvequalizehist", 0,
+      "cvequalizehist");
+  return gst_element_register (plugin, "cvequalizehist", GST_RANK_NONE,
+      GST_TYPE_CV_EQUALIZE_HIST);
+}

ext/opencv/basicfilters/gstcvequalizehist.h

@@ -0,0 +1,84 @@
+/*
+ * 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.
+ */
+
+#ifndef __GST_CV_EQUALIZE_HIST_H__
+#define __GST_CV_EQUALIZE_HIST_H__
+
+#include <gst/gst.h>
+#include <cv.h>
+#include <gstopencvbasetrans.h>
+
+G_BEGIN_DECLS
+
+/* #defines don't like whitespacey bits */
+#define GST_TYPE_CV_EQUALIZE_HIST \
+  (gst_cv_equalize_hist_get_type())
+#define GST_CV_EQUALIZE_HIST(obj) \
+  (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_CV_EQUALIZE_HIST,GstCvEqualizeHist))
+#define GST_CV_EQUALIZE_HIST_CLASS(klass) \
+  (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_CV_EQUALIZE_HIST,GstCvEqualizeHistClass))
+#define GST_IS_CV_EQUALIZE_HIST(obj) \
+  (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_CV_EQUALIZE_HIST))
+#define GST_IS_CV_EQUALIZE_HIST_CLASS(klass) \
+  (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_CV_EQUALIZE_HIST))
+
+typedef struct _GstCvEqualizeHist      GstCvEqualizeHist;
+typedef struct _GstCvEqualizeHistClass GstCvEqualizeHistClass;
+
+struct _GstCvEqualizeHist
+{
+  GstOpencvBaseTransform element;
+};
+
+struct _GstCvEqualizeHistClass 
+{
+  GstOpencvBaseTransformClass parent_class;
+};
+
+GType gst_cv_equalize_hist_get_type (void);
+
+gboolean gst_cv_equalize_hist_plugin_init (GstPlugin * plugin);
+
+G_END_DECLS
+
+#endif /* __GST_CV_EQUALIZE_HIST_H__ */

ext/opencv/gstopencv.c

@@ -24,6 +24,7 @@
 #endif
 
 #include "gstcvdilate.h"
+#include "gstcvequalizehist.h"
 #include "gstcverode.h"
 #include "gstcvsmooth.h"
 #include "gstedgedetect.h"
@@ -40,6 +41,9 @@ plugin_init (GstPlugin * plugin)
   if (!gst_cv_dilate_plugin_init (plugin))
     return FALSE;
 
+  if (!gst_cv_equalize_hist_plugin_init (plugin))
+    return FALSE;
+
   if (!gst_cv_erode_plugin_init (plugin))
     return FALSE;