gstreamer/gst-libs/gst/gl/x11/gstglwindow_x11_egl.c
2017-12-09 19:31:29 +00:00

199 lines
5.9 KiB
C

/*
* GStreamer
* Copyright (C) 2008 Julien Isorce <julien.isorce@gmail.com>
* Copyright (C) 2012 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.
*/
#define GLIB_DISABLE_DEPRECATION_WARNINGS
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstglwindow_x11_egl.h"
const gchar *X11EGLErrorString ();
#define GST_CAT_DEFAULT gst_gl_window_debug
#define gst_gl_window_x11_egl_parent_class parent_class
G_DEFINE_TYPE (GstGLWindowX11EGL, gst_gl_window_x11_egl,
GST_GL_TYPE_WINDOW_X11);
static guintptr gst_gl_window_x11_egl_get_gl_context (GstGLWindowX11 *
window_x11);
static void gst_gl_window_x11_egl_swap_buffers (GstGLWindowX11 * window_x11);
static gboolean gst_gl_window_x11_egl_activate (GstGLWindowX11 * window_x11,
gboolean activate);
static gboolean gst_gl_window_x11_egl_create_context (GstGLWindowX11 *
window_x11, GstGLAPI gl_api, guintptr external_gl_context, GError ** error);
static void gst_gl_window_x11_egl_destroy_context (GstGLWindowX11 * window_x11);
static gboolean gst_gl_window_x11_egl_choose_format (GstGLWindowX11 *
window_x11, GError ** error);
GstGLAPI gst_gl_window_x11_egl_get_gl_api (GstGLWindow * window);
static gpointer gst_gl_window_x11_egl_get_proc_address (GstGLWindow * window,
const gchar * name);
static void
gst_gl_window_x11_egl_class_init (GstGLWindowX11EGLClass * klass)
{
GstGLWindowClass *window_class = (GstGLWindowClass *) klass;
GstGLWindowX11Class *window_x11_class = (GstGLWindowX11Class *) klass;
window_x11_class->get_gl_context =
GST_DEBUG_FUNCPTR (gst_gl_window_x11_egl_get_gl_context);
window_x11_class->activate =
GST_DEBUG_FUNCPTR (gst_gl_window_x11_egl_activate);
window_x11_class->create_context =
GST_DEBUG_FUNCPTR (gst_gl_window_x11_egl_create_context);
window_x11_class->destroy_context =
GST_DEBUG_FUNCPTR (gst_gl_window_x11_egl_destroy_context);
window_x11_class->choose_format =
GST_DEBUG_FUNCPTR (gst_gl_window_x11_egl_choose_format);
window_x11_class->swap_buffers =
GST_DEBUG_FUNCPTR (gst_gl_window_x11_egl_swap_buffers);
window_class->get_gl_api =
GST_DEBUG_FUNCPTR (gst_gl_window_x11_egl_get_gl_api);
window_class->get_proc_address =
GST_DEBUG_FUNCPTR (gst_gl_window_x11_egl_get_proc_address);
}
static void
gst_gl_window_x11_egl_init (GstGLWindowX11EGL * window)
{
}
/* Must be called in the gl thread */
GstGLWindowX11EGL *
gst_gl_window_x11_egl_new (void)
{
GstGLWindowX11EGL *window = g_object_new (GST_GL_TYPE_WINDOW_X11_EGL, NULL);
return window;
}
static gboolean
gst_gl_window_x11_egl_choose_format (GstGLWindowX11 * window_x11,
GError ** error)
{
gint ret;
window_x11->visual_info = g_new0 (XVisualInfo, 1);
ret = XMatchVisualInfo (window_x11->device, window_x11->screen_num,
window_x11->depth, TrueColor, window_x11->visual_info);
if (ret == 0) {
g_set_error (error, GST_GL_WINDOW_ERROR, GST_GL_WINDOW_ERROR_WRONG_CONFIG,
"Failed to match XVisualInfo");
return FALSE;
}
return TRUE;
}
static gboolean
gst_gl_window_x11_egl_create_context (GstGLWindowX11 * window_x11,
GstGLAPI gl_api, guintptr external_gl_context, GError ** error)
{
GstGLWindowX11EGL *window_egl;
if ((gl_api & GST_GL_API_OPENGL) == GST_GL_API_NONE &&
(gl_api & GST_GL_API_GLES2) == GST_GL_API_NONE) {
g_set_error (error, GST_GL_WINDOW_ERROR, GST_GL_WINDOW_ERROR_WRONG_API,
"xEGL supports opengl or gles2");
goto failure;
}
window_egl = GST_GL_WINDOW_X11_EGL (window_x11);
window_egl->egl =
gst_gl_egl_create_context (eglGetDisplay ((EGLNativeDisplayType)
window_x11->device),
(EGLNativeWindowType) window_x11->internal_win_id, gl_api,
external_gl_context, error);
if (!window_egl->egl)
goto failure;
return TRUE;
failure:
return FALSE;
}
static void
gst_gl_window_x11_egl_destroy_context (GstGLWindowX11 * window_x11)
{
GstGLWindowX11EGL *window_egl;
window_egl = GST_GL_WINDOW_X11_EGL (window_x11);
gst_gl_egl_destroy_context (window_egl->egl);
window_egl->egl = NULL;
}
static gboolean
gst_gl_window_x11_egl_activate (GstGLWindowX11 * window_x11, gboolean activate)
{
GstGLWindowX11EGL *window_egl;
window_egl = GST_GL_WINDOW_X11_EGL (window_x11);
return gst_gl_egl_activate (window_egl->egl, activate);
}
static guintptr
gst_gl_window_x11_egl_get_gl_context (GstGLWindowX11 * window_x11)
{
GstGLWindowX11EGL *window_egl;
window_egl = GST_GL_WINDOW_X11_EGL (window_x11);
return gst_gl_egl_get_gl_context (window_egl->egl);
}
static void
gst_gl_window_x11_egl_swap_buffers (GstGLWindowX11 * window_x11)
{
GstGLWindowX11EGL *window_egl = GST_GL_WINDOW_X11_EGL (window_x11);
gst_gl_egl_swap_buffers (window_egl->egl);
}
GstGLAPI
gst_gl_window_x11_egl_get_gl_api (GstGLWindow * window)
{
GstGLWindowX11EGL *window_egl = GST_GL_WINDOW_X11_EGL (window);
return window_egl->egl ? gst_gl_egl_get_gl_api (window_egl->
egl) : GST_GL_API_GLES2 | GST_GL_API_OPENGL;
}
static gpointer
gst_gl_window_x11_egl_get_proc_address (GstGLWindow * window,
const gchar * name)
{
GstGLWindowX11EGL *window_egl = GST_GL_WINDOW_X11_EGL (window);
gpointer result;
if (!(result = gst_gl_egl_get_proc_address (window_egl->egl, name))) {
result = gst_gl_window_default_get_proc_address (window, name);
}
return result;
}