/* * GStreamer * Copyright (C) 2005 Thomas Vander Stichele * Copyright (C) 2005 Ronald S. Bultje * Copyright (C) 2008 Michael Sheldon * * 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-faceblur * * Blurs faces in images and videos. * * * Example launch line * |[ * gst-launch-0.10 videotestsrc ! decodebin ! videoconvert ! faceblur ! videoconvert ! xvimagesink * ]| * */ #ifdef HAVE_CONFIG_H # include #endif #include #include "gstopencvutils.h" #include "gstfaceblur.h" GST_DEBUG_CATEGORY_STATIC (gst_face_blur_debug); #define GST_CAT_DEFAULT gst_face_blur_debug #define DEFAULT_PROFILE OPENCV_PREFIX G_DIR_SEPARATOR_S "share" \ G_DIR_SEPARATOR_S "opencv" G_DIR_SEPARATOR_S "haarcascades" \ G_DIR_SEPARATOR_S "haarcascade_frontalface_default.xml" enum { PROP_0, PROP_PROFILE }; /* 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 (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 (GstFaceBlur, gst_face_blur, GST_TYPE_OPENCV_VIDEO_FILTER); static void gst_face_blur_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec); static void gst_face_blur_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec); static gboolean gst_face_blur_set_caps (GstOpencvVideoFilter * transform, gint in_width, gint in_height, gint in_depth, gint in_channels, gint out_width, gint out_height, gint out_depth, gint out_channels); static GstFlowReturn gst_face_blur_transform_ip (GstOpencvVideoFilter * transform, GstBuffer * buffer, IplImage * img); static void gst_face_blur_load_profile (GstFaceBlur * filter); /* Clean up */ static void gst_face_blur_finalize (GObject * obj) { GstFaceBlur *filter = GST_FACE_BLUR (obj); if (filter->cvGray) cvReleaseImage (&filter->cvGray); if (filter->cvStorage) cvReleaseMemStorage (&filter->cvStorage); if (filter->cvCascade) cvReleaseHaarClassifierCascade (&filter->cvCascade); g_free (filter->profile); G_OBJECT_CLASS (gst_face_blur_parent_class)->finalize (obj); } /* initialize the faceblur's class */ static void gst_face_blur_class_init (GstFaceBlurClass * klass) { GObjectClass *gobject_class; GstOpencvVideoFilterClass *gstopencvbasefilter_class; GstElementClass *element_class = GST_ELEMENT_CLASS (klass); gobject_class = (GObjectClass *) klass; gstopencvbasefilter_class = (GstOpencvVideoFilterClass *) klass; gstopencvbasefilter_class->cv_trans_ip_func = gst_face_blur_transform_ip; gstopencvbasefilter_class->cv_set_caps = gst_face_blur_set_caps; gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_face_blur_finalize); gobject_class->set_property = gst_face_blur_set_property; gobject_class->get_property = gst_face_blur_get_property; g_object_class_install_property (gobject_class, PROP_PROFILE, g_param_spec_string ("profile", "Profile", "Location of Haar cascade file to use for face blurion", DEFAULT_PROFILE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); gst_element_class_set_static_metadata (element_class, "faceblur", "Filter/Effect/Video", "Blurs faces in images and videos", "Michael Sheldon "); 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_face_blur_init (GstFaceBlur * filter) { filter->profile = g_strdup (DEFAULT_PROFILE); gst_face_blur_load_profile (filter); gst_opencv_video_filter_set_in_place (GST_OPENCV_VIDEO_FILTER_CAST (filter), TRUE); } static void gst_face_blur_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec) { GstFaceBlur *filter = GST_FACE_BLUR (object); switch (prop_id) { case PROP_PROFILE: g_free (filter->profile); filter->profile = g_value_dup_string (value); gst_face_blur_load_profile (filter); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void gst_face_blur_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec) { GstFaceBlur *filter = GST_FACE_BLUR (object); switch (prop_id) { case PROP_PROFILE: g_value_set_string (value, filter->profile); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static gboolean gst_face_blur_set_caps (GstOpencvVideoFilter * transform, gint in_width, gint in_height, gint in_depth, gint in_channels, gint out_width, gint out_height, gint out_depth, gint out_channels) { GstFaceBlur *filter = GST_FACE_BLUR (transform); if (filter->cvGray) cvReleaseImage (&filter->cvGray); filter->cvGray = cvCreateImage (cvSize (in_width, in_height), IPL_DEPTH_8U, 1); if (filter->cvStorage) cvClearMemStorage (filter->cvStorage); else filter->cvStorage = cvCreateMemStorage (0); return TRUE; } static GstFlowReturn gst_face_blur_transform_ip (GstOpencvVideoFilter * transform, GstBuffer * buffer, IplImage * img) { GstFaceBlur *filter = GST_FACE_BLUR (transform); CvSeq *faces; int i; if (!filter->cvCascade) return GST_FLOW_OK; cvCvtColor (img, filter->cvGray, CV_RGB2GRAY); cvClearMemStorage (filter->cvStorage); faces = cvHaarDetectObjects (filter->cvGray, filter->cvCascade, filter->cvStorage, 1.1, 2, 0, cvSize (30, 30) #if (CV_MAJOR_VERSION >= 2) && (CV_MINOR_VERSION >= 2) , cvSize (0, 0) #endif ); for (i = 0; i < (faces ? faces->total : 0); i++) { CvRect *r = (CvRect *) cvGetSeqElem (faces, i); cvSetImageROI (img, *r); cvSmooth (img, img, CV_BLUR, 11, 11, 0, 0); cvSmooth (img, img, CV_GAUSSIAN, 11, 11, 0, 0); cvResetImageROI (img); } return GST_FLOW_OK; } static void gst_face_blur_load_profile (GstFaceBlur * filter) { if (filter->cvCascade) cvReleaseHaarClassifierCascade (&filter->cvCascade); filter->cvCascade = (CvHaarClassifierCascade *) cvLoad (filter->profile, 0, 0, 0); if (!filter->cvCascade) GST_WARNING ("Couldn't load Haar classifier cascade: %s.", filter->profile); } /* entry point to initialize the plug-in * initialize the plug-in itself * register the element factories and other features */ gboolean gst_face_blur_plugin_init (GstPlugin * plugin) { /* debug category for filtering log messages */ GST_DEBUG_CATEGORY_INIT (gst_face_blur_debug, "faceblur", 0, "Blurs faces in images and videos"); return gst_element_register (plugin, "faceblur", GST_RANK_NONE, GST_TYPE_FACE_BLUR); }