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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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303 lines
9.5 KiB
C
303 lines
9.5 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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/* 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 <gst/gst.h>
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#include "gstopencvvideofilter.h"
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#include "gstopencvutils.h"
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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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static GstElementClass *parent_class = NULL;
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static void gst_opencv_video_filter_class_init (GstOpencvVideoFilterClass *
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klass);
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static void gst_opencv_video_filter_init (GstOpencvVideoFilter * trans,
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GstOpencvVideoFilterClass * klass);
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static gboolean gst_opencv_video_filter_set_caps (GstBaseTransform * trans,
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GstCaps * incaps, GstCaps * outcaps);
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static GstFlowReturn gst_opencv_video_filter_transform_ip (GstBaseTransform *
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trans, GstBuffer * buf);
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static GstFlowReturn gst_opencv_video_filter_transform (GstBaseTransform *
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trans, GstBuffer * inbuf, GstBuffer * outbuf);
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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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GType
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gst_opencv_video_filter_get_type (void)
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{
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static volatile gsize opencv_base_transform_type = 0;
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if (g_once_init_enter (&opencv_base_transform_type)) {
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GType _type;
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static const GTypeInfo opencv_base_transform_info = {
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sizeof (GstOpencvVideoFilterClass),
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NULL,
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NULL,
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(GClassInitFunc) gst_opencv_video_filter_class_init,
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NULL,
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NULL,
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sizeof (GstOpencvVideoFilter),
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0,
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(GInstanceInitFunc) gst_opencv_video_filter_init,
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};
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_type = g_type_register_static (GST_TYPE_VIDEO_FILTER,
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"GstOpencvVideoFilter", &opencv_base_transform_info,
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G_TYPE_FLAG_ABSTRACT);
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g_once_init_leave (&opencv_base_transform_type, _type);
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}
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return opencv_base_transform_type;
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}
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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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if (transform->cvImage)
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cvReleaseImage (&transform->cvImage);
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if (transform->out_cvImage)
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cvReleaseImage (&transform->out_cvImage);
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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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GstBaseTransformClass *basetrans_class;
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gobject_class = (GObjectClass *) klass;
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basetrans_class = (GstBaseTransformClass *) klass;
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parent_class = g_type_class_peek_parent (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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basetrans_class->transform = gst_opencv_video_filter_transform;
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basetrans_class->transform_ip = gst_opencv_video_filter_transform_ip;
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basetrans_class->set_caps = gst_opencv_video_filter_set_caps;
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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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GstOpencvVideoFilterClass * klass)
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{
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}
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static GstFlowReturn
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gst_opencv_video_filter_transform (GstBaseTransform * trans,
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GstBuffer * inbuf, GstBuffer * outbuf)
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{
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GstOpencvVideoFilter *transform;
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GstOpencvVideoFilterClass *fclass;
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GstMapInfo in_info;
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GstMapInfo out_info;
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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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g_return_val_if_fail (transform->cvImage != NULL, GST_FLOW_ERROR);
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g_return_val_if_fail (transform->out_cvImage != NULL, GST_FLOW_ERROR);
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gst_buffer_map (inbuf, &in_info, GST_MAP_READ);
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transform->cvImage->imageData = (char *) in_info.data;
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gst_buffer_map (outbuf, &out_info, GST_MAP_WRITE);
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transform->out_cvImage->imageData = (char *) out_info.data;
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ret = fclass->cv_trans_func (transform, inbuf, transform->cvImage, outbuf,
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transform->out_cvImage);
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gst_buffer_unmap (inbuf, &in_info);
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gst_buffer_unmap (outbuf, &out_info);
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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_ip (GstBaseTransform * trans,
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GstBuffer * buffer)
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{
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GstOpencvVideoFilter *transform;
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GstOpencvVideoFilterClass *fclass;
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GstMapInfo info;
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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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g_return_val_if_fail (transform->cvImage != NULL, GST_FLOW_ERROR);
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/* TODO this is not always needed and should be solved at BaseTransform
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* level */
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buffer = gst_buffer_make_writable (buffer);
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gst_buffer_map (buffer, &info, GST_MAP_READWRITE);
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transform->cvImage->imageData = (char *) info.data;
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/* FIXME how to release buffer? */
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ret = fclass->cv_trans_ip_func (transform, buffer, transform->cvImage);
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gst_buffer_unmap (buffer, &info);
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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_caps (GstBaseTransform * trans, GstCaps * incaps,
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GstCaps * outcaps)
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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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gint in_depth, in_channels;
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gint out_width, out_height;
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gint out_depth, out_channels;
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GError *in_err = NULL;
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GError *out_err = NULL;
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if (!gst_opencv_parse_iplimage_params_from_caps (incaps, &in_width,
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&in_height, &in_depth, &in_channels, &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_parse_iplimage_params_from_caps (outcaps, &out_width,
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&out_height, &out_depth, &out_channels, &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_depth,
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in_channels, out_width, out_height, out_depth, out_channels))
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return FALSE;
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}
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if (transform->cvImage) {
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cvReleaseImage (&transform->cvImage);
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}
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if (transform->out_cvImage) {
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cvReleaseImage (&transform->out_cvImage);
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}
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transform->cvImage =
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cvCreateImageHeader (cvSize (in_width, in_height), in_depth, in_channels);
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transform->out_cvImage =
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cvCreateImageHeader (cvSize (out_width, out_height), out_depth,
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out_channels);
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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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