ext/opencv/gstopencvvideofilter.c - mtk-gst-plugins-bad-debian - Git at Google

 /*
  * 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., 51 Franklin St, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  */

 /* TODO opencv can do scaling for some cases */

 #ifdef HAVE_CONFIG_H
 #  include <config.h>
 #endif

 #include <gst/gst.h>

 #include "gstopencvvideofilter.h"
 #include "gstopencvutils.h"

 GST_DEBUG_CATEGORY_STATIC (gst_opencv_video_filter_debug);
 #define GST_CAT_DEFAULT gst_opencv_video_filter_debug

 /* Filter signals and args */
 enum
 {
   /* FILL ME */
   LAST_SIGNAL
 };

 enum
 {
   PROP_0
 };

 static GstElementClass *parent_class = NULL;

 static void gst_opencv_video_filter_class_init (GstOpencvVideoFilterClass *
     klass);
 static void gst_opencv_video_filter_init (GstOpencvVideoFilter * trans,
     GstOpencvVideoFilterClass * klass);

 static gboolean gst_opencv_video_filter_set_caps (GstBaseTransform * trans,
     GstCaps * incaps, GstCaps * outcaps);
 static GstFlowReturn gst_opencv_video_filter_transform_ip (GstBaseTransform *
     trans, GstBuffer * buf);
 static GstFlowReturn gst_opencv_video_filter_transform (GstBaseTransform *
     trans, GstBuffer * inbuf, GstBuffer * outbuf);

 static void gst_opencv_video_filter_set_property (GObject * object,
     guint prop_id, const GValue * value, GParamSpec * pspec);
 static void gst_opencv_video_filter_get_property (GObject * object,
     guint prop_id, GValue * value, GParamSpec * pspec);

 GType
 gst_opencv_video_filter_get_type (void)
 {
   static volatile gsize opencv_base_transform_type = 0;

   if (g_once_init_enter (&opencv_base_transform_type)) {
     GType _type;
     static const GTypeInfo opencv_base_transform_info = {
       sizeof (GstOpencvVideoFilterClass),
       NULL,
       NULL,
       (GClassInitFunc) gst_opencv_video_filter_class_init,
       NULL,
       NULL,
       sizeof (GstOpencvVideoFilter),
       0,
       (GInstanceInitFunc) gst_opencv_video_filter_init,
     };

     _type = g_type_register_static (GST_TYPE_VIDEO_FILTER,
         "GstOpencvVideoFilter", &opencv_base_transform_info,
         G_TYPE_FLAG_ABSTRACT);
     g_once_init_leave (&opencv_base_transform_type, _type);
   }
   return opencv_base_transform_type;
 }

 /* Clean up */
 static void
 gst_opencv_video_filter_finalize (GObject * obj)
 {
   GstOpencvVideoFilter *transform = GST_OPENCV_VIDEO_FILTER (obj);

   if (transform->cvImage)
     cvReleaseImage (&transform->cvImage);
   if (transform->out_cvImage)
     cvReleaseImage (&transform->out_cvImage);

   G_OBJECT_CLASS (parent_class)->finalize (obj);
 }

 static void
 gst_opencv_video_filter_class_init (GstOpencvVideoFilterClass * klass)
 {
   GObjectClass *gobject_class;
   GstBaseTransformClass *basetrans_class;

   gobject_class = (GObjectClass *) klass;
   basetrans_class = (GstBaseTransformClass *) klass;
   parent_class = g_type_class_peek_parent (klass);

   GST_DEBUG_CATEGORY_INIT (gst_opencv_video_filter_debug,
       "opencvbasetransform", 0, "opencvbasetransform element");

   gobject_class->finalize =
       GST_DEBUG_FUNCPTR (gst_opencv_video_filter_finalize);
   gobject_class->set_property = gst_opencv_video_filter_set_property;
   gobject_class->get_property = gst_opencv_video_filter_get_property;

   basetrans_class->transform = gst_opencv_video_filter_transform;
   basetrans_class->transform_ip = gst_opencv_video_filter_transform_ip;
   basetrans_class->set_caps = gst_opencv_video_filter_set_caps;
 }

 static void
 gst_opencv_video_filter_init (GstOpencvVideoFilter * transform,
     GstOpencvVideoFilterClass * klass)
 {
 }

 static GstFlowReturn
 gst_opencv_video_filter_transform (GstBaseTransform * trans,
     GstBuffer * inbuf, GstBuffer * outbuf)
 {
   GstOpencvVideoFilter *transform;
   GstOpencvVideoFilterClass *fclass;
   GstMapInfo in_info;
   GstMapInfo out_info;
   GstFlowReturn ret;

   transform = GST_OPENCV_VIDEO_FILTER (trans);
   fclass = GST_OPENCV_VIDEO_FILTER_GET_CLASS (transform);

   g_return_val_if_fail (fclass->cv_trans_func != NULL, GST_FLOW_ERROR);
   g_return_val_if_fail (transform->cvImage != NULL, GST_FLOW_ERROR);
   g_return_val_if_fail (transform->out_cvImage != NULL, GST_FLOW_ERROR);

   if (!gst_buffer_map (inbuf, &in_info, GST_MAP_READ))
     goto inbuf_map_failed;

   if (!gst_buffer_map (outbuf, &out_info, GST_MAP_WRITE))
     goto outbuf_map_failed;

   transform->cvImage->imageData = (char *) in_info.data;
   transform->out_cvImage->imageData = (char *) out_info.data;

   ret = fclass->cv_trans_func (transform, inbuf, transform->cvImage, outbuf,
       transform->out_cvImage);

   gst_buffer_unmap (inbuf, &in_info);
   gst_buffer_unmap (outbuf, &out_info);

   return ret;

 inbuf_map_failed:
   GST_ELEMENT_ERROR (transform, RESOURCE, READ,
       ("Failed to map buffer for reading"), (NULL));
   return GST_FLOW_ERROR;

 outbuf_map_failed:
   GST_ELEMENT_ERROR (transform, RESOURCE, WRITE,
       ("Failed to map buffer for writing"), (NULL));
   gst_buffer_unmap (inbuf, &in_info);
   return GST_FLOW_ERROR;
 }

 static GstFlowReturn
 gst_opencv_video_filter_transform_ip (GstBaseTransform * trans,
     GstBuffer * buffer)
 {
   GstOpencvVideoFilter *transform;
   GstOpencvVideoFilterClass *fclass;
   GstMapInfo info;
   GstFlowReturn ret;

   transform = GST_OPENCV_VIDEO_FILTER (trans);
   fclass = GST_OPENCV_VIDEO_FILTER_GET_CLASS (transform);

   g_return_val_if_fail (fclass->cv_trans_ip_func != NULL, GST_FLOW_ERROR);
   g_return_val_if_fail (transform->cvImage != NULL, GST_FLOW_ERROR);

   if (!gst_buffer_map (buffer, &info, GST_MAP_READWRITE))
     goto map_failed;

   transform->cvImage->imageData = (char *) info.data;

   ret = fclass->cv_trans_ip_func (transform, buffer, transform->cvImage);

   gst_buffer_unmap (buffer, &info);

   return ret;

 map_failed:
   GST_ELEMENT_ERROR (transform, RESOURCE, WRITE,
       ("Failed to map buffer for reading and writing"), (NULL));
   return GST_FLOW_ERROR;
 }

 static gboolean
 gst_opencv_video_filter_set_caps (GstBaseTransform * trans, GstCaps * incaps,
     GstCaps * outcaps)
 {
   GstOpencvVideoFilter *transform = GST_OPENCV_VIDEO_FILTER (trans);
   GstOpencvVideoFilterClass *klass =
       GST_OPENCV_VIDEO_FILTER_GET_CLASS (transform);
   gint in_width, in_height;
   gint in_depth, in_channels;
   gint out_width, out_height;
   gint out_depth, out_channels;
   GError *in_err = NULL;
   GError *out_err = NULL;

   if (!gst_opencv_parse_iplimage_params_from_caps (incaps, &in_width,
           &in_height, &in_depth, &in_channels, &in_err)) {
     GST_WARNING_OBJECT (transform, "Failed to parse input caps: %s",
         in_err->message);
     g_error_free (in_err);
     return FALSE;
   }

   if (!gst_opencv_parse_iplimage_params_from_caps (outcaps, &out_width,
           &out_height, &out_depth, &out_channels, &out_err)) {
     GST_WARNING_OBJECT (transform, "Failed to parse output caps: %s",
         out_err->message);
     g_error_free (out_err);
     return FALSE;
   }

   if (klass->cv_set_caps) {
     if (!klass->cv_set_caps (transform, in_width, in_height, in_depth,
             in_channels, out_width, out_height, out_depth, out_channels))
       return FALSE;
   }

   if (transform->cvImage) {
     cvReleaseImage (&transform->cvImage);
   }
   if (transform->out_cvImage) {
     cvReleaseImage (&transform->out_cvImage);
   }

   transform->cvImage =
       cvCreateImageHeader (cvSize (in_width, in_height), in_depth, in_channels);
   transform->out_cvImage =
       cvCreateImageHeader (cvSize (out_width, out_height), out_depth,
       out_channels);

   gst_base_transform_set_in_place (GST_BASE_TRANSFORM (transform),
       transform->in_place);
   return TRUE;
 }

 static void
 gst_opencv_video_filter_set_property (GObject * object, guint prop_id,
     const GValue * value, GParamSpec * pspec)
 {
   switch (prop_id) {
     default:
       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
       break;
   }
 }

 static void
 gst_opencv_video_filter_get_property (GObject * object, guint prop_id,
     GValue * value, GParamSpec * pspec)
 {
   switch (prop_id) {
     default:
       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
       break;
   }
 }

 void
 gst_opencv_video_filter_set_in_place (GstOpencvVideoFilter * transform,
     gboolean ip)
 {
   transform->in_place = ip;
   gst_base_transform_set_in_place (GST_BASE_TRANSFORM (transform), ip);
 }
	/*
	* 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., 51 Franklin St, Fifth Floor,
	* Boston, MA 02110-1301, USA.
	*/

	/* TODO opencv can do scaling for some cases */

	#ifdef HAVE_CONFIG_H
	# include <config.h>
	#endif

	#include <gst/gst.h>

	#include "gstopencvvideofilter.h"
	#include "gstopencvutils.h"

	GST_DEBUG_CATEGORY_STATIC (gst_opencv_video_filter_debug);
	#define GST_CAT_DEFAULT gst_opencv_video_filter_debug

	/* Filter signals and args */
	enum
	{
	/* FILL ME */
	LAST_SIGNAL
	};

	enum
	{
	PROP_0
	};

	static GstElementClass *parent_class = NULL;

	static void gst_opencv_video_filter_class_init (GstOpencvVideoFilterClass *
	klass);
	static void gst_opencv_video_filter_init (GstOpencvVideoFilter * trans,
	GstOpencvVideoFilterClass * klass);

	static gboolean gst_opencv_video_filter_set_caps (GstBaseTransform * trans,
	GstCaps * incaps, GstCaps * outcaps);
	static GstFlowReturn gst_opencv_video_filter_transform_ip (GstBaseTransform *
	trans, GstBuffer * buf);
	static GstFlowReturn gst_opencv_video_filter_transform (GstBaseTransform *
	trans, GstBuffer * inbuf, GstBuffer * outbuf);

	static void gst_opencv_video_filter_set_property (GObject * object,
	guint prop_id, const GValue * value, GParamSpec * pspec);
	static void gst_opencv_video_filter_get_property (GObject * object,
	guint prop_id, GValue * value, GParamSpec * pspec);

	GType
	gst_opencv_video_filter_get_type (void)
	{
	static volatile gsize opencv_base_transform_type = 0;

	if (g_once_init_enter (&opencv_base_transform_type)) {
	GType _type;
	static const GTypeInfo opencv_base_transform_info = {
	sizeof (GstOpencvVideoFilterClass),
	NULL,
	NULL,
	(GClassInitFunc) gst_opencv_video_filter_class_init,
	NULL,
	NULL,
	sizeof (GstOpencvVideoFilter),
	0,
	(GInstanceInitFunc) gst_opencv_video_filter_init,
	};

	_type = g_type_register_static (GST_TYPE_VIDEO_FILTER,
	"GstOpencvVideoFilter", &opencv_base_transform_info,
	G_TYPE_FLAG_ABSTRACT);
	g_once_init_leave (&opencv_base_transform_type, _type);
	}
	return opencv_base_transform_type;
	}

	/* Clean up */
	static void
	gst_opencv_video_filter_finalize (GObject * obj)
	{
	GstOpencvVideoFilter *transform = GST_OPENCV_VIDEO_FILTER (obj);

	if (transform->cvImage)
	cvReleaseImage (&transform->cvImage);
	if (transform->out_cvImage)
	cvReleaseImage (&transform->out_cvImage);

	G_OBJECT_CLASS (parent_class)->finalize (obj);
	}

	static void
	gst_opencv_video_filter_class_init (GstOpencvVideoFilterClass * klass)
	{
	GObjectClass *gobject_class;
	GstBaseTransformClass *basetrans_class;

	gobject_class = (GObjectClass *) klass;
	basetrans_class = (GstBaseTransformClass *) klass;
	parent_class = g_type_class_peek_parent (klass);

	GST_DEBUG_CATEGORY_INIT (gst_opencv_video_filter_debug,
	"opencvbasetransform", 0, "opencvbasetransform element");

	gobject_class->finalize =
	GST_DEBUG_FUNCPTR (gst_opencv_video_filter_finalize);
	gobject_class->set_property = gst_opencv_video_filter_set_property;
	gobject_class->get_property = gst_opencv_video_filter_get_property;

	basetrans_class->transform = gst_opencv_video_filter_transform;
	basetrans_class->transform_ip = gst_opencv_video_filter_transform_ip;
	basetrans_class->set_caps = gst_opencv_video_filter_set_caps;
	}

	static void
	gst_opencv_video_filter_init (GstOpencvVideoFilter * transform,
	GstOpencvVideoFilterClass * klass)
	{
	}

	static GstFlowReturn
	gst_opencv_video_filter_transform (GstBaseTransform * trans,
	GstBuffer * inbuf, GstBuffer * outbuf)
	{
	GstOpencvVideoFilter *transform;
	GstOpencvVideoFilterClass *fclass;
	GstMapInfo in_info;
	GstMapInfo out_info;
	GstFlowReturn ret;

	transform = GST_OPENCV_VIDEO_FILTER (trans);
	fclass = GST_OPENCV_VIDEO_FILTER_GET_CLASS (transform);

	g_return_val_if_fail (fclass->cv_trans_func != NULL, GST_FLOW_ERROR);
	g_return_val_if_fail (transform->cvImage != NULL, GST_FLOW_ERROR);
	g_return_val_if_fail (transform->out_cvImage != NULL, GST_FLOW_ERROR);

	if (!gst_buffer_map (inbuf, &in_info, GST_MAP_READ))
	goto inbuf_map_failed;

	if (!gst_buffer_map (outbuf, &out_info, GST_MAP_WRITE))
	goto outbuf_map_failed;

	transform->cvImage->imageData = (char *) in_info.data;
	transform->out_cvImage->imageData = (char *) out_info.data;

	ret = fclass->cv_trans_func (transform, inbuf, transform->cvImage, outbuf,
	transform->out_cvImage);

	gst_buffer_unmap (inbuf, &in_info);
	gst_buffer_unmap (outbuf, &out_info);

	return ret;

	inbuf_map_failed:
	GST_ELEMENT_ERROR (transform, RESOURCE, READ,
	("Failed to map buffer for reading"), (NULL));
	return GST_FLOW_ERROR;

	outbuf_map_failed:
	GST_ELEMENT_ERROR (transform, RESOURCE, WRITE,
	("Failed to map buffer for writing"), (NULL));
	gst_buffer_unmap (inbuf, &in_info);
	return GST_FLOW_ERROR;
	}

	static GstFlowReturn
	gst_opencv_video_filter_transform_ip (GstBaseTransform * trans,
	GstBuffer * buffer)
	{
	GstOpencvVideoFilter *transform;
	GstOpencvVideoFilterClass *fclass;
	GstMapInfo info;
	GstFlowReturn ret;

	transform = GST_OPENCV_VIDEO_FILTER (trans);
	fclass = GST_OPENCV_VIDEO_FILTER_GET_CLASS (transform);

	g_return_val_if_fail (fclass->cv_trans_ip_func != NULL, GST_FLOW_ERROR);
	g_return_val_if_fail (transform->cvImage != NULL, GST_FLOW_ERROR);

	if (!gst_buffer_map (buffer, &info, GST_MAP_READWRITE))
	goto map_failed;

	transform->cvImage->imageData = (char *) info.data;

	ret = fclass->cv_trans_ip_func (transform, buffer, transform->cvImage);

	gst_buffer_unmap (buffer, &info);

	return ret;

	map_failed:
	GST_ELEMENT_ERROR (transform, RESOURCE, WRITE,
	("Failed to map buffer for reading and writing"), (NULL));
	return GST_FLOW_ERROR;
	}

	static gboolean
	gst_opencv_video_filter_set_caps (GstBaseTransform * trans, GstCaps * incaps,
	GstCaps * outcaps)
	{
	GstOpencvVideoFilter *transform = GST_OPENCV_VIDEO_FILTER (trans);
	GstOpencvVideoFilterClass *klass =
	GST_OPENCV_VIDEO_FILTER_GET_CLASS (transform);
	gint in_width, in_height;
	gint in_depth, in_channels;
	gint out_width, out_height;
	gint out_depth, out_channels;
	GError *in_err = NULL;
	GError *out_err = NULL;

	if (!gst_opencv_parse_iplimage_params_from_caps (incaps, &in_width,
	&in_height, &in_depth, &in_channels, &in_err)) {
	GST_WARNING_OBJECT (transform, "Failed to parse input caps: %s",
	in_err->message);
	g_error_free (in_err);
	return FALSE;
	}

	if (!gst_opencv_parse_iplimage_params_from_caps (outcaps, &out_width,
	&out_height, &out_depth, &out_channels, &out_err)) {
	GST_WARNING_OBJECT (transform, "Failed to parse output caps: %s",
	out_err->message);
	g_error_free (out_err);
	return FALSE;
	}

	if (klass->cv_set_caps) {
	if (!klass->cv_set_caps (transform, in_width, in_height, in_depth,
	in_channels, out_width, out_height, out_depth, out_channels))
	return FALSE;
	}

	if (transform->cvImage) {
	cvReleaseImage (&transform->cvImage);
	}
	if (transform->out_cvImage) {
	cvReleaseImage (&transform->out_cvImage);
	}

	transform->cvImage =
	cvCreateImageHeader (cvSize (in_width, in_height), in_depth, in_channels);
	transform->out_cvImage =
	cvCreateImageHeader (cvSize (out_width, out_height), out_depth,
	out_channels);

	gst_base_transform_set_in_place (GST_BASE_TRANSFORM (transform),
	transform->in_place);
	return TRUE;
	}

	static void
	gst_opencv_video_filter_set_property (GObject * object, guint prop_id,
	const GValue * value, GParamSpec * pspec)
	{
	switch (prop_id) {
	default:
	G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
	break;
	}
	}

	static void
	gst_opencv_video_filter_get_property (GObject * object, guint prop_id,
	GValue * value, GParamSpec * pspec)
	{
	switch (prop_id) {
	default:
	G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
	break;
	}
	}

	void
	gst_opencv_video_filter_set_in_place (GstOpencvVideoFilter * transform,
	gboolean ip)
	{
	transform->in_place = ip;
	gst_base_transform_set_in_place (GST_BASE_TRANSFORM (transform), ip);
	}