/* * 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 "gstcvlaplace.h" GST_DEBUG_CATEGORY_STATIC (gst_cv_laplace_debug); #define GST_CAT_DEFAULT gst_cv_laplace_debug static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink", GST_PAD_SINK, GST_PAD_ALWAYS, GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("GRAY8")) ); #if G_BYTE_ORDER == G_BIG_ENDIAN static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src", GST_PAD_SRC, GST_PAD_ALWAYS, GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("GRAY16_BE")) ); #else static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src", GST_PAD_SRC, GST_PAD_ALWAYS, GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("GRAY16_LE")) ); #endif /* Filter signals and args */ enum { /* FILL ME */ LAST_SIGNAL }; enum { PROP_0, PROP_APERTURE_SIZE }; #define DEFAULT_APERTURE_SIZE 3 G_DEFINE_TYPE (GstCvLaplace, gst_cv_laplace, GST_TYPE_OPENCV_VIDEO_FILTER); static void gst_cv_laplace_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec); static void gst_cv_laplace_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec); static GstCaps *gst_cv_laplace_transform_caps (GstBaseTransform * trans, GstPadDirection dir, GstCaps * caps, GstCaps * filter); static GstFlowReturn gst_cv_laplace_transform (GstOpencvVideoFilter * filter, GstBuffer * buf, IplImage * img, GstBuffer * outbuf, IplImage * outimg); static gboolean gst_cv_laplace_cv_set_caps (GstOpencvVideoFilter * trans, gint in_width, gint in_height, gint in_depth, gint in_channels, gint out_width, gint out_height, gint out_depth, gint out_channels); /* Clean up */ static void gst_cv_laplace_finalize (GObject * obj) { GstCvLaplace *filter = GST_CV_LAPLACE (obj); if (filter->intermediary_img) cvReleaseImage (&filter->intermediary_img); G_OBJECT_CLASS (gst_cv_laplace_parent_class)->finalize (obj); } /* initialize the cvlaplace's class */ static void gst_cv_laplace_class_init (GstCvLaplaceClass * klass) { GObjectClass *gobject_class; GstBaseTransformClass *gstbasetransform_class; GstOpencvVideoFilterClass *gstopencvbasefilter_class; GstElementClass *element_class = GST_ELEMENT_CLASS (klass); gobject_class = (GObjectClass *) klass; gstbasetransform_class = (GstBaseTransformClass *) klass; gstopencvbasefilter_class = (GstOpencvVideoFilterClass *) klass; gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_cv_laplace_finalize); gobject_class->set_property = gst_cv_laplace_set_property; gobject_class->get_property = gst_cv_laplace_get_property; gstbasetransform_class->transform_caps = gst_cv_laplace_transform_caps; gstopencvbasefilter_class->cv_trans_func = gst_cv_laplace_transform; gstopencvbasefilter_class->cv_set_caps = gst_cv_laplace_cv_set_caps; g_object_class_install_property (gobject_class, PROP_APERTURE_SIZE, g_param_spec_int ("aperture-size", "aperture size", "Size of the extended Laplace Kernel (1, 3, 5 or 7)", 1, 7, DEFAULT_APERTURE_SIZE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); 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, "cvlaplace", "Transform/Effect/Video", "Applies cvLaplace OpenCV function to the image", "Thiago Santos<thiago.sousa.santos@collabora.co.uk>"); } static void gst_cv_laplace_init (GstCvLaplace * filter) { filter->aperture_size = DEFAULT_APERTURE_SIZE; gst_base_transform_set_in_place (GST_BASE_TRANSFORM (filter), FALSE); } static gboolean gst_cv_laplace_cv_set_caps (GstOpencvVideoFilter * trans, gint in_width, gint in_height, gint in_depth, gint in_channels, gint out_width, gint out_height, gint out_depth, gint out_channels) { GstCvLaplace *filter = GST_CV_LAPLACE (trans); gint intermediary_depth; /* cvLaplace needs an signed output, so we create our intermediary step * image here */ switch (out_depth) { case IPL_DEPTH_16U: intermediary_depth = IPL_DEPTH_16S; break; default: GST_WARNING_OBJECT (filter, "Unsupported output depth %d", out_depth); return FALSE; } if (filter->intermediary_img) { cvReleaseImage (&filter->intermediary_img); } filter->intermediary_img = cvCreateImage (cvSize (out_width, out_height), intermediary_depth, out_channels); return TRUE; } static GstCaps * gst_cv_laplace_transform_caps (GstBaseTransform * trans, GstPadDirection dir, GstCaps * caps, GstCaps * filter) { GstCaps *to, *ret; GstCaps *templ; GstStructure *structure; GstPad *other; gint i; to = gst_caps_new_empty (); for (i = 0; i < gst_caps_get_size (caps); i++) { const GValue *v; GValue list = { 0, }; GValue val = { 0, }; structure = gst_structure_copy (gst_caps_get_structure (caps, i)); g_value_init (&list, GST_TYPE_LIST); g_value_init (&val, G_TYPE_STRING); g_value_set_string (&val, "GRAY8"); gst_value_list_append_value (&list, &val); g_value_unset (&val); g_value_init (&val, G_TYPE_STRING); #if G_BYTE_ORDER == G_BIG_ENDIAN g_value_set_string (&val, "GRAY16_BE"); #else g_value_set_string (&val, "GRAY16_LE"); #endif gst_value_list_append_value (&list, &val); g_value_unset (&val); v = gst_structure_get_value (structure, "format"); gst_value_list_merge (&val, v, &list); gst_structure_set_value (structure, "format", &val); g_value_unset (&val); g_value_unset (&list); gst_structure_remove_field (structure, "colorimetry"); gst_structure_remove_field (structure, "chroma-site"); gst_caps_append_structure (to, structure); } /* filter against set allowed caps on the pad */ other = (dir == GST_PAD_SINK) ? trans->srcpad : trans->sinkpad; templ = gst_pad_get_pad_template_caps (other); ret = gst_caps_intersect (to, templ); gst_caps_unref (to); gst_caps_unref (templ); if (ret && filter) { GstCaps *intersection; intersection = gst_caps_intersect_full (filter, ret, GST_CAPS_INTERSECT_FIRST); gst_caps_unref (ret); ret = intersection; } return ret; } static void gst_cv_laplace_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec) { GstCvLaplace *filter = GST_CV_LAPLACE (object); switch (prop_id) { case PROP_APERTURE_SIZE:{ gint as = g_value_get_int (value); if (as % 2 != 1) { GST_WARNING_OBJECT (filter, "Invalid value %d for aperture size", as); } else filter->aperture_size = g_value_get_int (value); } break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void gst_cv_laplace_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec) { GstCvLaplace *filter = GST_CV_LAPLACE (object); switch (prop_id) { case PROP_APERTURE_SIZE: g_value_set_int (value, filter->aperture_size); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static GstFlowReturn gst_cv_laplace_transform (GstOpencvVideoFilter * base, GstBuffer * buf, IplImage * img, GstBuffer * outbuf, IplImage * outimg) { GstCvLaplace *filter = GST_CV_LAPLACE (base); g_assert (filter->intermediary_img); cvLaplace (img, filter->intermediary_img, filter->aperture_size); cvConvertScale (filter->intermediary_img, outimg, 1, 0); return GST_FLOW_OK; } gboolean gst_cv_laplace_plugin_init (GstPlugin * plugin) { GST_DEBUG_CATEGORY_INIT (gst_cv_laplace_debug, "cvlaplace", 0, "cvlaplace"); return gst_element_register (plugin, "cvlaplace", GST_RANK_NONE, GST_TYPE_CV_LAPLACE); }