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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
* 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"
#include "gstgldisplay.h"
#if GST_GL_HAVE_WINDOW_X11
#include <gst/gl/x11/gstgldisplay_x11.h>
#endif
#if GST_GL_HAVE_PLATFORM_EGL
#include <gst/gl/egl/gstgldisplay_egl.h>
#include <gst/gl/egl/gsteglimagememory.h>
#endif
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, GST_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);
static guintptr gst_gl_display_default_get_handle (GstGLDisplay * display);
struct _GstGLDisplayPrivate
{
gint dummy;
};
static void
gst_gl_display_class_init (GstGLDisplayClass * klass)
{
g_type_class_add_private (klass, sizeof (GstGLDisplayPrivate));
klass->get_handle = gst_gl_display_default_get_handle;
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->type = GST_GL_DISPLAY_TYPE_ANY;
GST_TRACE ("init %p", display);
gst_gl_memory_init ();
#if GST_GL_HAVE_PLATFORM_EGL
gst_egl_image_memory_init ();
#endif
}
static void
gst_gl_display_finalize (GObject * object)
{
GST_TRACE ("finalize %p", object);
G_OBJECT_CLASS (gst_gl_display_parent_class)->finalize (object);
}
/**
* gst_gl_display_new:
*
* Returns: (transfer full): a new #GstGLDisplay
*/
GstGLDisplay *
gst_gl_display_new (void)
{
GstGLDisplay *display = NULL;
const gchar *user_choice, *platform_choice;
static volatile gsize _init = 0;
if (g_once_init_enter (&_init)) {
GST_DEBUG_CATEGORY_INIT (gst_gl_display_debug, "gldisplay", 0,
"gldisplay element");
g_once_init_leave (&_init, 1);
}
user_choice = g_getenv ("GST_GL_WINDOW");
platform_choice = g_getenv ("GST_GL_PLATFORM");
GST_INFO ("creating a display, user choice:%s (platform: %s)",
GST_STR_NULL (user_choice), GST_STR_NULL (platform_choice));
#if GST_GL_HAVE_WINDOW_COCOA
if (!display && (!user_choice || g_strstr_len (user_choice, 5, "cocoa")))
display = g_object_new (GST_TYPE_GL_DISPLAY, NULL);
#endif
#if GST_GL_HAVE_WINDOW_X11
if (!display && (!user_choice || g_strstr_len (user_choice, 3, "x11")))
display = GST_GL_DISPLAY (gst_gl_display_x11_new (NULL));
#endif
#if GST_GL_HAVE_WINDOW_WAYLAND
if (!display && (!user_choice || g_strstr_len (user_choice, 7, "wayland")))
display = g_object_new (GST_TYPE_GL_DISPLAY, NULL);
#endif
#if GST_GL_HAVE_PLATFORM_EGL
if (!display && (!platform_choice
|| g_strstr_len (platform_choice, 3, "egl")))
display = GST_GL_DISPLAY (gst_gl_display_egl_new ());
#endif
if (!display) {
/* subclass returned a NULL window */
GST_WARNING ("Could not create display. user specified %s "
"(platform: %s), creating dummy",
GST_STR_NULL (user_choice), GST_STR_NULL (platform_choice));
return g_object_new (GST_TYPE_GL_DISPLAY, NULL);
}
return display;
}
guintptr
gst_gl_display_get_handle (GstGLDisplay * display)
{
GstGLDisplayClass *klass;
g_return_val_if_fail (GST_IS_GL_DISPLAY (display), 0);
klass = GST_GL_DISPLAY_GET_CLASS (display);
g_return_val_if_fail (klass->get_handle != NULL, 0);
return klass->get_handle (display);
}
static guintptr
gst_gl_display_default_get_handle (GstGLDisplay * display)
{
return 0;
}
/**
* gst_gl_display_get_handle_type:
* @display: a #GstGLDisplay
*
* Returns: the #GstGLDisplayType of @display
*/
GstGLDisplayType
gst_gl_display_get_handle_type (GstGLDisplay * display)
{
g_return_val_if_fail (GST_IS_GL_DISPLAY (display), GST_GL_DISPLAY_TYPE_NONE);
return display->type;
}
/**
* 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;
}