gstreamer/gst-libs/gst/gl/gstgldisplay.c

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/*
* GStreamer
* Copyright (C) 2007 David A. Schleef <ds@schleef.org>
* Copyright (C) 2008 Julien Isorce <julien.isorce@gmail.com>
* Copyright (C) 2008 Filippo Argiolas <filippo.argiolas@gmail.com>
* Copyright (C) 2013 Matthew Waters <ystreet00@gmail.com>
*
* 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
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
/**
* SECTION:gstgldisplay
* @short_description: window system display connection abstraction
* @title: GstGLDisplay
* @see_also: #GstContext, #GstGLContext, #GstGLWindow
*
* #GstGLDisplay represents a connection to the underlying windowing system.
* Elements are required to make use of #GstContext to share and propogate
* a #GstGLDisplay.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gl.h"
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#include "gstgldisplay.h"
GST_DEBUG_CATEGORY_STATIC (gst_context);
GST_DEBUG_CATEGORY_STATIC (gst_gl_display_debug);
#define GST_CAT_DEFAULT gst_gl_display_debug
#define DEBUG_INIT \
GST_DEBUG_CATEGORY_INIT (gst_gl_display_debug, "gldisplay", 0, "opengl display"); \
GST_DEBUG_CATEGORY_GET (gst_context, "GST_CONTEXT");
G_DEFINE_TYPE_WITH_CODE (GstGLDisplay, gst_gl_display, G_TYPE_OBJECT,
DEBUG_INIT);
#define GST_GL_DISPLAY_GET_PRIVATE(o) \
(G_TYPE_INSTANCE_GET_PRIVATE((o), GST_TYPE_GL_DISPLAY, GstGLDisplayPrivate))
static void gst_gl_display_finalize (GObject * object);
struct _GstGLDisplayPrivate
{
gint dummy;
};
/*------------------------------------------------------------
--------------------- For klass GstGLDisplay ---------------
----------------------------------------------------------*/
static void
gst_gl_display_class_init (GstGLDisplayClass * klass)
{
g_type_class_add_private (klass, sizeof (GstGLDisplayPrivate));
G_OBJECT_CLASS (klass)->finalize = gst_gl_display_finalize;
}
static void
gst_gl_display_init (GstGLDisplay * display)
{
display->priv = GST_GL_DISPLAY_GET_PRIVATE (display);
display->gl_api = GST_GL_API_NONE;
GST_TRACE ("init %p", display);
gst_gl_memory_init ();
}
static void
gst_gl_display_finalize (GObject * object)
{
GstGLDisplay *display = GST_GL_DISPLAY (object);
if (display->context) {
gst_object_unref (display->context);
display->context = NULL;
}
GST_TRACE ("finalize %p", object);
G_OBJECT_CLASS (gst_gl_display_parent_class)->finalize (object);
}
GstGLDisplay *
gst_gl_display_new (void)
{
return g_object_new (GST_TYPE_GL_DISPLAY, NULL);
}
GstGLAPI
gst_gl_display_get_gl_api (GstGLDisplay * display)
{
g_return_val_if_fail (GST_IS_GL_DISPLAY (display), GST_GL_API_NONE);
g_return_val_if_fail (GST_GL_IS_CONTEXT (display->context), GST_GL_API_NONE);
return gst_gl_context_get_gl_api (display->context);
}
/**
* gst_context_set_gl_display:
* @context: a #GstContext
* @display: resulting #GstGLDisplay
*
* Sets @display on @context
*/
void
gst_context_set_gl_display (GstContext * context, GstGLDisplay * display)
{
GstStructure *s;
g_return_if_fail (context != NULL);
GST_CAT_LOG (gst_context, "setting GstGLDisplay(%p) on context(%p)", display,
context);
s = gst_context_writable_structure (context);
gst_structure_set (s, GST_GL_DISPLAY_CONTEXT_TYPE, GST_TYPE_GL_DISPLAY,
display, NULL);
}
/**
* gst_context_get_gl_display:
* @context: a #GstContext
* @display: resulting #GstGLDisplay
*
* Returns: Whether @display was in @context
*/
gboolean
gst_context_get_gl_display (GstContext * context, GstGLDisplay ** display)
{
const GstStructure *s;
gboolean ret;
g_return_val_if_fail (display != NULL, FALSE);
g_return_val_if_fail (context != NULL, FALSE);
s = gst_context_get_structure (context);
ret = gst_structure_get (s, GST_GL_DISPLAY_CONTEXT_TYPE,
GST_TYPE_GL_DISPLAY, display, NULL);
GST_CAT_LOG (gst_context, "got GstGLDisplay(%p) from context(%p)", *display,
context);
return ret;
}