| /* |
| * 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); |
| } |