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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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322 lines
9.9 KiB
C
322 lines
9.9 KiB
C
/*
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* GStreamer
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* Copyright (C) 2010 Thiago Santos <thiago.sousa.santos@collabora.co.uk>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*
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* Alternatively, the contents of this file may be used under the
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* GNU Lesser General Public License Version 2.1 (the "LGPL"), in
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* which case the following provisions apply instead of the ones
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* mentioned above:
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include <gst/gst.h>
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#include "gstopencvutils.h"
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#include "gstcvlaplace.h"
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GST_DEBUG_CATEGORY_STATIC (gst_cv_laplace_debug);
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#define GST_CAT_DEFAULT gst_cv_laplace_debug
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static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink",
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GST_PAD_SINK,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("GRAY8"))
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);
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#if G_BYTE_ORDER == G_BIG_ENDIAN
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static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
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GST_PAD_SRC,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("GRAY16_BE"))
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);
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#else
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static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
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GST_PAD_SRC,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("GRAY16_LE"))
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);
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#endif
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/* Filter signals and args */
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enum
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{
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/* FILL ME */
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LAST_SIGNAL
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};
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enum
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{
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PROP_0,
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PROP_APERTURE_SIZE
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};
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#define DEFAULT_APERTURE_SIZE 3
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G_DEFINE_TYPE (GstCvLaplace, gst_cv_laplace, GST_TYPE_OPENCV_VIDEO_FILTER);
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static void gst_cv_laplace_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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static void gst_cv_laplace_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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static GstCaps *gst_cv_laplace_transform_caps (GstBaseTransform * trans,
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GstPadDirection dir, GstCaps * caps, GstCaps * filter);
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static GstFlowReturn gst_cv_laplace_transform (GstOpencvVideoFilter * filter,
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GstBuffer * buf, IplImage * img, GstBuffer * outbuf, IplImage * outimg);
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static gboolean gst_cv_laplace_cv_set_caps (GstOpencvVideoFilter * trans,
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gint in_width, gint in_height, gint in_depth, gint in_channels,
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gint out_width, gint out_height, gint out_depth, gint out_channels);
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/* Clean up */
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static void
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gst_cv_laplace_finalize (GObject * obj)
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{
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GstCvLaplace *filter = GST_CV_LAPLACE (obj);
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if (filter->intermediary_img)
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cvReleaseImage (&filter->intermediary_img);
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G_OBJECT_CLASS (gst_cv_laplace_parent_class)->finalize (obj);
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}
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/* initialize the cvlaplace's class */
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static void
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gst_cv_laplace_class_init (GstCvLaplaceClass * klass)
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{
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GObjectClass *gobject_class;
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GstBaseTransformClass *gstbasetransform_class;
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GstOpencvVideoFilterClass *gstopencvbasefilter_class;
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GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
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gobject_class = (GObjectClass *) klass;
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gstbasetransform_class = (GstBaseTransformClass *) klass;
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gstopencvbasefilter_class = (GstOpencvVideoFilterClass *) klass;
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gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_cv_laplace_finalize);
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gobject_class->set_property = gst_cv_laplace_set_property;
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gobject_class->get_property = gst_cv_laplace_get_property;
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gstbasetransform_class->transform_caps = gst_cv_laplace_transform_caps;
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gstopencvbasefilter_class->cv_trans_func = gst_cv_laplace_transform;
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gstopencvbasefilter_class->cv_set_caps = gst_cv_laplace_cv_set_caps;
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g_object_class_install_property (gobject_class, PROP_APERTURE_SIZE,
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g_param_spec_int ("aperture-size", "aperture size",
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"Size of the extended Laplace Kernel (1, 3, 5 or 7)", 1, 7,
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DEFAULT_APERTURE_SIZE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&src_factory));
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&sink_factory));
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gst_element_class_set_static_metadata (element_class,
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"cvlaplace",
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"Transform/Effect/Video",
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"Applies cvLaplace OpenCV function to the image",
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"Thiago Santos<thiago.sousa.santos@collabora.co.uk>");
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}
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static void
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gst_cv_laplace_init (GstCvLaplace * filter)
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{
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filter->aperture_size = DEFAULT_APERTURE_SIZE;
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gst_base_transform_set_in_place (GST_BASE_TRANSFORM (filter), FALSE);
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}
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static gboolean
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gst_cv_laplace_cv_set_caps (GstOpencvVideoFilter * trans, gint in_width,
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gint in_height, gint in_depth, gint in_channels, gint out_width,
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gint out_height, gint out_depth, gint out_channels)
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{
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GstCvLaplace *filter = GST_CV_LAPLACE (trans);
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gint intermediary_depth;
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/* cvLaplace needs an signed output, so we create our intermediary step
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* image here */
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switch (out_depth) {
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case IPL_DEPTH_16U:
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intermediary_depth = IPL_DEPTH_16S;
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break;
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default:
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GST_WARNING_OBJECT (filter, "Unsupported output depth %d", out_depth);
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return FALSE;
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}
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if (filter->intermediary_img) {
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cvReleaseImage (&filter->intermediary_img);
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}
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filter->intermediary_img = cvCreateImage (cvSize (out_width, out_height),
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intermediary_depth, out_channels);
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return TRUE;
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}
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static GstCaps *
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gst_cv_laplace_transform_caps (GstBaseTransform * trans, GstPadDirection dir,
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GstCaps * caps, GstCaps * filter)
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{
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GstCaps *to, *ret;
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GstCaps *templ;
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GstStructure *structure;
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GstPad *other;
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gint i;
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to = gst_caps_new_empty ();
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for (i = 0; i < gst_caps_get_size (caps); i++) {
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const GValue *v;
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GValue list = { 0, };
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GValue val = { 0, };
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structure = gst_structure_copy (gst_caps_get_structure (caps, i));
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g_value_init (&list, GST_TYPE_LIST);
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g_value_init (&val, G_TYPE_STRING);
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g_value_set_string (&val, "GRAY8");
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gst_value_list_append_value (&list, &val);
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g_value_unset (&val);
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g_value_init (&val, G_TYPE_STRING);
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#if G_BYTE_ORDER == G_BIG_ENDIAN
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g_value_set_string (&val, "GRAY16_BE");
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#else
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g_value_set_string (&val, "GRAY16_LE");
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#endif
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gst_value_list_append_value (&list, &val);
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g_value_unset (&val);
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v = gst_structure_get_value (structure, "format");
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gst_value_list_merge (&val, v, &list);
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gst_structure_set_value (structure, "format", &val);
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g_value_unset (&val);
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g_value_unset (&list);
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gst_structure_remove_field (structure, "colorimetry");
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gst_structure_remove_field (structure, "chroma-site");
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gst_caps_append_structure (to, structure);
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}
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/* filter against set allowed caps on the pad */
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other = (dir == GST_PAD_SINK) ? trans->srcpad : trans->sinkpad;
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templ = gst_pad_get_pad_template_caps (other);
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ret = gst_caps_intersect (to, templ);
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gst_caps_unref (to);
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gst_caps_unref (templ);
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if (ret && filter) {
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GstCaps *intersection;
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intersection =
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gst_caps_intersect_full (filter, ret, GST_CAPS_INTERSECT_FIRST);
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gst_caps_unref (ret);
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ret = intersection;
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}
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return ret;
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}
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static void
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gst_cv_laplace_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec)
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{
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GstCvLaplace *filter = GST_CV_LAPLACE (object);
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switch (prop_id) {
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case PROP_APERTURE_SIZE:{
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gint as = g_value_get_int (value);
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if (as % 2 != 1) {
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GST_WARNING_OBJECT (filter, "Invalid value %d for aperture size", as);
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} else
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filter->aperture_size = g_value_get_int (value);
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}
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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gst_cv_laplace_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec)
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{
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GstCvLaplace *filter = GST_CV_LAPLACE (object);
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switch (prop_id) {
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case PROP_APERTURE_SIZE:
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g_value_set_int (value, filter->aperture_size);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static GstFlowReturn
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gst_cv_laplace_transform (GstOpencvVideoFilter * base, GstBuffer * buf,
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IplImage * img, GstBuffer * outbuf, IplImage * outimg)
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{
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GstCvLaplace *filter = GST_CV_LAPLACE (base);
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g_assert (filter->intermediary_img);
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cvLaplace (img, filter->intermediary_img, filter->aperture_size);
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cvConvertScale (filter->intermediary_img, outimg, 1, 0);
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return GST_FLOW_OK;
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}
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gboolean
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gst_cv_laplace_plugin_init (GstPlugin * plugin)
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{
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GST_DEBUG_CATEGORY_INIT (gst_cv_laplace_debug, "cvlaplace", 0, "cvlaplace");
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return gst_element_register (plugin, "cvlaplace", GST_RANK_NONE,
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GST_TYPE_CV_LAPLACE);
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}
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