mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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245 lines
8 KiB
C++
245 lines
8 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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* Copyright (C) 2018 Nicola Murino <nicola.murino@gmail.com>
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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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/* TODO opencv can do scaling for some cases */
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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 "gstopencvvideofilter.h"
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#include "gstopencvutils.h"
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#include <opencv2/core.hpp>
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GST_DEBUG_CATEGORY_STATIC (gst_opencv_video_filter_debug);
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#define GST_CAT_DEFAULT gst_opencv_video_filter_debug
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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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};
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#define parent_class gst_opencv_video_filter_parent_class
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G_DEFINE_ABSTRACT_TYPE (GstOpencvVideoFilter, gst_opencv_video_filter,
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GST_TYPE_VIDEO_FILTER);
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static void gst_opencv_video_filter_set_property (GObject * object,
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guint prop_id, const GValue * value, GParamSpec * pspec);
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static void gst_opencv_video_filter_get_property (GObject * object,
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guint prop_id, GValue * value, GParamSpec * pspec);
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static GstFlowReturn gst_opencv_video_filter_transform_frame (GstVideoFilter *
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trans, GstVideoFrame * inframe, GstVideoFrame * outframe);
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static GstFlowReturn gst_opencv_video_filter_transform_frame_ip (GstVideoFilter
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* trans, GstVideoFrame * frame);
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static gboolean gst_opencv_video_filter_set_info (GstVideoFilter * trans,
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GstCaps * incaps, GstVideoInfo * in_info, GstCaps * outcaps,
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GstVideoInfo * out_info);
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/* Clean up */
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static void
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gst_opencv_video_filter_finalize (GObject * obj)
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{
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GstOpencvVideoFilter *transform = GST_OPENCV_VIDEO_FILTER (obj);
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transform->cvImage.release ();
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transform->out_cvImage.release ();
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G_OBJECT_CLASS (parent_class)->finalize (obj);
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}
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static void
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gst_opencv_video_filter_class_init (GstOpencvVideoFilterClass * klass)
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{
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GObjectClass *gobject_class;
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GstVideoFilterClass *vfilter_class;
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gobject_class = (GObjectClass *) klass;
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vfilter_class = (GstVideoFilterClass *) klass;
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GST_DEBUG_CATEGORY_INIT (gst_opencv_video_filter_debug,
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"opencvbasetransform", 0, "opencvbasetransform element");
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gobject_class->finalize =
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GST_DEBUG_FUNCPTR (gst_opencv_video_filter_finalize);
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gobject_class->set_property = gst_opencv_video_filter_set_property;
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gobject_class->get_property = gst_opencv_video_filter_get_property;
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vfilter_class->transform_frame = gst_opencv_video_filter_transform_frame;
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vfilter_class->transform_frame_ip =
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gst_opencv_video_filter_transform_frame_ip;
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vfilter_class->set_info = gst_opencv_video_filter_set_info;
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}
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static void
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gst_opencv_video_filter_init (GstOpencvVideoFilter * transform)
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{
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}
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static GstFlowReturn
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gst_opencv_video_filter_transform_frame (GstVideoFilter * trans,
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GstVideoFrame * inframe, GstVideoFrame * outframe)
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{
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GstOpencvVideoFilter *transform;
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GstOpencvVideoFilterClass *fclass;
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GstFlowReturn ret;
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transform = GST_OPENCV_VIDEO_FILTER (trans);
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fclass = GST_OPENCV_VIDEO_FILTER_GET_CLASS (transform);
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g_return_val_if_fail (fclass->cv_trans_func != NULL, GST_FLOW_ERROR);
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transform->cvImage.data = (unsigned char *) inframe->data[0];
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transform->cvImage.datastart = (unsigned char *) inframe->data[0];
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transform->out_cvImage.data = (unsigned char *) outframe->data[0];
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transform->out_cvImage.datastart = (unsigned char *) outframe->data[0];
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ret = fclass->cv_trans_func (transform, inframe->buffer, transform->cvImage,
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outframe->buffer, transform->out_cvImage);
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return ret;
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}
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static GstFlowReturn
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gst_opencv_video_filter_transform_frame_ip (GstVideoFilter * trans,
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GstVideoFrame * frame)
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{
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GstOpencvVideoFilter *transform;
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GstOpencvVideoFilterClass *fclass;
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GstFlowReturn ret;
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transform = GST_OPENCV_VIDEO_FILTER (trans);
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fclass = GST_OPENCV_VIDEO_FILTER_GET_CLASS (transform);
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g_return_val_if_fail (fclass->cv_trans_ip_func != NULL, GST_FLOW_ERROR);
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transform->cvImage.data = (unsigned char *) frame->data[0];
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transform->cvImage.datastart = (unsigned char *) frame->data[0];
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ret = fclass->cv_trans_ip_func (transform, frame->buffer, transform->cvImage);
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return ret;
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}
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static gboolean
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gst_opencv_video_filter_set_info (GstVideoFilter * trans, GstCaps * incaps,
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GstVideoInfo * in_info, GstCaps * outcaps, GstVideoInfo * out_info)
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{
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GstOpencvVideoFilter *transform = GST_OPENCV_VIDEO_FILTER (trans);
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GstOpencvVideoFilterClass *klass =
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GST_OPENCV_VIDEO_FILTER_GET_CLASS (transform);
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gint in_width, in_height;
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int in_cv_type;
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gint out_width, out_height;
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int out_cv_type;
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GError *in_err = NULL;
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GError *out_err = NULL;
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if (!gst_opencv_cv_mat_params_from_video_info (in_info, &in_width,
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&in_height, &in_cv_type, &in_err)) {
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GST_WARNING_OBJECT (transform, "Failed to parse input caps: %s",
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in_err->message);
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g_error_free (in_err);
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return FALSE;
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}
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if (!gst_opencv_cv_mat_params_from_video_info (out_info, &out_width,
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&out_height, &out_cv_type, &out_err)) {
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GST_WARNING_OBJECT (transform, "Failed to parse output caps: %s",
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out_err->message);
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g_error_free (out_err);
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return FALSE;
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}
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if (klass->cv_set_caps) {
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if (!klass->cv_set_caps (transform, in_width, in_height, in_cv_type,
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out_width, out_height, out_cv_type))
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return FALSE;
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}
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transform->cvImage.create (cv::Size (in_width, in_height), in_cv_type);
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transform->out_cvImage.create (cv::Size (out_width, out_height), out_cv_type);
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gst_base_transform_set_in_place (GST_BASE_TRANSFORM (transform),
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transform->in_place);
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return TRUE;
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}
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static void
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gst_opencv_video_filter_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec)
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{
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switch (prop_id) {
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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_opencv_video_filter_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec)
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{
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switch (prop_id) {
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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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void
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gst_opencv_video_filter_set_in_place (GstOpencvVideoFilter * transform,
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gboolean ip)
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{
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transform->in_place = ip;
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gst_base_transform_set_in_place (GST_BASE_TRANSFORM (transform), ip);
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}
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