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

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/*
* GStreamer
* 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.
*/
#if HAVE_CONFIG_H
# include "config.h"
#endif
#include <gmodule.h>
#include "gstglwindow.h"
#ifdef HAVE_WINDOW_X11
#include "x11/gstglwindow_x11.h"
#endif
#ifdef HAVE_WINDOW_WIN32
#include "win32/gstglwindow_win32.h"
#endif
#ifdef HAVE_WINDOW_COCOA
#include "cocoa/gstglwindow_cocoa.h"
#endif
#ifdef HAVE_WINDOW_WAYLAND
#include "wayland/gstglwindow_wayland_egl.h"
#endif
#define GST_CAT_DEFAULT gst_gl_window_debug
GST_DEBUG_CATEGORY (GST_CAT_DEFAULT);
#define gst_gl_window_parent_class parent_class
G_DEFINE_ABSTRACT_TYPE (GstGLWindow, gst_gl_window, G_TYPE_OBJECT);
GQuark
gst_gl_window_error_quark (void)
{
return g_quark_from_static_string ("gst-gl-window-error-quark");
}
static void
gst_gl_window_init (GstGLWindow * window)
{
g_mutex_init (&window->lock);
window->need_lock = TRUE;
}
static void
gst_gl_window_class_init (GstGLWindowClass * klass)
{
klass->get_proc_address =
GST_DEBUG_FUNCPTR (gst_gl_window_default_get_proc_address);
}
GstGLWindow *
gst_gl_window_new (GstGLAPI api, guintptr external_gl_context, GError ** error)
{
GstGLWindow *window = NULL;
const gchar *user_choice;
static volatile gsize _init = 0;
g_return_val_if_fail (error == NULL || *error == NULL, NULL);
if (g_once_init_enter (&_init)) {
GST_DEBUG_CATEGORY_INIT (gst_gl_window_debug, "glwindow", 0,
"glwindow element");
g_once_init_leave (&_init, 1);
}
user_choice = g_getenv ("GST_GL_WINDOW");
GST_INFO ("creating a window, user choice:%s", user_choice);
#ifdef HAVE_WINDOW_X11
if (!window && (!user_choice || g_strstr_len (user_choice, 3, "x11")))
window =
GST_GL_WINDOW (gst_gl_window_x11_new (api, external_gl_context, error));
#endif
#ifdef HAVE_WINDOW_WIN32
if (!window && (!user_choice || g_strstr_len (user_choice, 5, "win32")))
window =
GST_GL_WINDOW (gst_gl_window_win32_new (api, external_gl_context,
error));
#endif
#ifdef HAVE_WINDOW_COCOA
if (!window && (!user_choice || g_strstr_len (user_choice, 5, "cocoa")))
window =
GST_GL_WINDOW (gst_gl_window_cocoa_new (api, external_gl_context,
error));
#endif
#ifdef HAVE_WINDOW_WAYLAND
if (!window && (!user_choice || g_strstr_len (user_choice, 7, "wayland")))
window =
GST_GL_WINDOW (gst_gl_window_wayland_egl_new (api,
external_gl_context, error));
#endif
if (!window) {
if (error && !*error) {
if (user_choice) {
g_set_error (error, GST_GL_WINDOW_ERROR, GST_GL_WINDOW_ERROR_FAILED,
"Could not create %s window", user_choice);
} else {
/* subclass did not set an error yet returned a NULL window */
g_set_error (error, GST_GL_WINDOW_ERROR, GST_GL_WINDOW_ERROR_FAILED,
"Could not create %s window, Unknown Error",
user_choice ? user_choice : "");
}
}
return NULL;
}
window->external_gl_context = external_gl_context;
return window;
}
guintptr
gst_gl_window_get_gl_context (GstGLWindow * window)
{
GstGLWindowClass *window_class;
guintptr result;
g_return_val_if_fail (GST_GL_IS_WINDOW (window), 0);
window_class = GST_GL_WINDOW_GET_CLASS (window);
g_return_val_if_fail (window_class->get_gl_context != NULL, 0);
GST_GL_WINDOW_LOCK (window);
result = window_class->get_gl_context (window);
GST_GL_WINDOW_UNLOCK (window);
return result;
}
gboolean
gst_gl_window_activate (GstGLWindow * window, gboolean activate)
{
GstGLWindowClass *window_class;
gboolean result;
g_return_val_if_fail (GST_GL_IS_WINDOW (window), FALSE);
window_class = GST_GL_WINDOW_GET_CLASS (window);
g_return_val_if_fail (window_class->activate != NULL, FALSE);
GST_GL_WINDOW_LOCK (window);
result = window_class->activate (window, activate);
GST_GL_WINDOW_UNLOCK (window);
return result;
}
void
gst_gl_window_set_window_handle (GstGLWindow * window, guintptr handle)
{
GstGLWindowClass *window_class;
g_return_if_fail (GST_GL_IS_WINDOW (window));
g_return_if_fail (handle != 0);
window_class = GST_GL_WINDOW_GET_CLASS (window);
g_return_if_fail (window_class->set_window_handle != NULL);
GST_GL_WINDOW_LOCK (window);
window_class->set_window_handle (window, handle);
GST_GL_WINDOW_UNLOCK (window);
}
void
gst_gl_window_draw_unlocked (GstGLWindow * window, guint width, guint height)
{
GstGLWindowClass *window_class;
g_return_if_fail (GST_GL_IS_WINDOW (window));
window_class = GST_GL_WINDOW_GET_CLASS (window);
g_return_if_fail (window_class->draw_unlocked != NULL);
window_class->draw_unlocked (window, width, height);
}
void
gst_gl_window_draw (GstGLWindow * window, guint width, guint height)
{
GstGLWindowClass *window_class;
g_return_if_fail (GST_GL_IS_WINDOW (window));
window_class = GST_GL_WINDOW_GET_CLASS (window);
g_return_if_fail (window_class->draw != NULL);
GST_GL_WINDOW_LOCK (window);
window_class->draw (window, width, height);
GST_GL_WINDOW_UNLOCK (window);
}
void
gst_gl_window_run (GstGLWindow * window)
{
GstGLWindowClass *window_class;
g_return_if_fail (GST_GL_IS_WINDOW (window));
window_class = GST_GL_WINDOW_GET_CLASS (window);
g_return_if_fail (window_class->run != NULL);
GST_GL_WINDOW_LOCK (window);
window_class->run (window);
GST_GL_WINDOW_UNLOCK (window);
}
void
gst_gl_window_quit (GstGLWindow * window, GstGLWindowCB callback, gpointer data)
{
GstGLWindowClass *window_class;
g_return_if_fail (GST_GL_IS_WINDOW (window));
window_class = GST_GL_WINDOW_GET_CLASS (window);
g_return_if_fail (window_class->quit != NULL);
GST_GL_WINDOW_LOCK (window);
window->close = callback;
window->close_data = data;
window_class->quit (window, callback, data);
GST_GL_WINDOW_UNLOCK (window);
}
void
gst_gl_window_send_message (GstGLWindow * window, GstGLWindowCB callback,
gpointer data)
{
GstGLWindowClass *window_class;
g_return_if_fail (GST_GL_IS_WINDOW (window));
g_return_if_fail (callback != NULL);
window_class = GST_GL_WINDOW_GET_CLASS (window);
g_return_if_fail (window_class->quit != NULL);
GST_GL_WINDOW_LOCK (window);
window_class->send_message (window, callback, data);
GST_GL_WINDOW_UNLOCK (window);
}
/**
* gst_gl_window_set_need_lock:
*
* window: a #GstGLWindow
* need_lock: whether the @window needs to lock for concurrent access
*
* This API is intended only for subclasses of #GstGLWindow in order to ensure
* correct interaction with the underlying window system.
*/
void
gst_gl_window_set_need_lock (GstGLWindow * window, gboolean need_lock)
{
g_return_if_fail (GST_GL_IS_WINDOW (window));
window->need_lock = need_lock;
}
void
gst_gl_window_set_draw_callback (GstGLWindow * window, GstGLWindowCB callback,
gpointer data)
{
g_return_if_fail (GST_GL_IS_WINDOW (window));
GST_GL_WINDOW_LOCK (window);
window->draw = callback;
window->draw_data = data;
GST_GL_WINDOW_UNLOCK (window);
}
void
gst_gl_window_set_resize_callback (GstGLWindow * window,
GstGLWindowResizeCB callback, gpointer data)
{
g_return_if_fail (GST_GL_IS_WINDOW (window));
GST_GL_WINDOW_LOCK (window);
window->resize = callback;
window->resize_data = data;
GST_GL_WINDOW_UNLOCK (window);
}
void
gst_gl_window_set_close_callback (GstGLWindow * window, GstGLWindowCB callback,
gpointer data)
{
g_return_if_fail (GST_GL_IS_WINDOW (window));
GST_GL_WINDOW_LOCK (window);
window->close = callback;
window->close_data = data;
GST_GL_WINDOW_UNLOCK (window);
}
GstGLAPI
gst_gl_window_get_gl_api (GstGLWindow * window)
{
GstGLAPI ret;
GstGLWindowClass *window_class;
g_return_val_if_fail (GST_GL_IS_WINDOW (window), GST_GL_API_NONE);
window_class = GST_GL_WINDOW_GET_CLASS (window);
g_return_val_if_fail (window_class->get_gl_api != NULL, GST_GL_API_NONE);
GST_GL_WINDOW_LOCK (window);
ret = window_class->get_gl_api (window);
GST_GL_WINDOW_UNLOCK (window);
return ret;
}
gpointer
gst_gl_window_get_proc_address (GstGLWindow * window, const gchar * name)
{
gpointer ret;
GstGLWindowClass *window_class;
g_return_val_if_fail (GST_GL_IS_WINDOW (window), NULL);
window_class = GST_GL_WINDOW_GET_CLASS (window);
g_return_val_if_fail (window_class->get_proc_address != NULL, NULL);
GST_GL_WINDOW_LOCK (window);
ret = window_class->get_proc_address (window, name);
GST_GL_WINDOW_UNLOCK (window);
return ret;
}
gpointer
gst_gl_window_default_get_proc_address (GstGLWindow * window,
const gchar * name)
{
static GModule *module = NULL;
gpointer ret = NULL;
if (!module)
module = g_module_open (NULL, G_MODULE_BIND_LAZY);
if (module) {
if (!g_module_symbol (module, name, &ret))
return NULL;
}
return ret;
}