gstreamer/gst-libs/gst/gl/gstglwindow.c
Matthew Waters 9cbb652b66 [794/906] context: add subclasses for the different platforms (egl, glx, wgl, etc)
- most code taken from the Window subclasses
- tested combinations: xEGL, GLX, Wayland+EGL, Cocoa (under GNUStep), WGL (Wine)
2017-12-09 19:31:30 +00:00

390 lines
9.9 KiB
C

/*
* 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 <stdio.h>
#include "gl.h"
#include "gstglwindow.h"
/* FIXME make this work with windowless contexts */
#if GST_GL_HAVE_WINDOW_X11
#include "x11/gstglwindow_x11.h"
#endif
#if GST_GL_HAVE_WINDOW_WIN32
#include "win32/gstglwindow_win32.h"
#endif
#if GST_GL_HAVE_WINDOW_COCOA
#include "cocoa/gstglwindow_cocoa.h"
#endif
#if GST_GL_HAVE_WINDOW_WAYLAND
#include "wayland/gstglwindow_wayland_egl.h"
#endif
#if GST_GL_HAVE_WINDOW_ANDROID
#include "android/gstglwindow_android_egl.h"
#endif
#define USING_OPENGL(display) (display->gl_api & GST_GL_API_OPENGL)
#define USING_OPENGL3(display) (display->gl_api & GST_GL_API_OPENGL3)
#define USING_GLES(display) (display->gl_api & GST_GL_API_GLES)
#define USING_GLES2(display) (display->gl_api & GST_GL_API_GLES2)
#define USING_GLES3(display) (display->gl_api & GST_GL_API_GLES3)
#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);
#define GST_GL_WINDOW_GET_PRIVATE(o) \
(G_TYPE_INSTANCE_GET_PRIVATE((o), GST_GL_TYPE_WINDOW, GstGLWindowPrivate))
struct _GstGLWindowPrivate
{
GstGLDisplay *display;
GThread *gl_thread;
/* conditions */
GMutex render_lock;
GCond cond_create_context;
GCond cond_destroy_context;
gboolean context_created;
gboolean alive;
guintptr external_gl_context;
GstGLAPI gl_api;
GError **error;
};
static void gst_gl_window_finalize (GObject * 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)
{
window->priv = GST_GL_WINDOW_GET_PRIVATE (window);
g_mutex_init (&window->lock);
window->need_lock = TRUE;
g_mutex_init (&window->priv->render_lock);
g_cond_init (&window->priv->cond_create_context);
g_cond_init (&window->priv->cond_destroy_context);
window->priv->context_created = FALSE;
g_weak_ref_init (&window->context_ref, NULL);
}
static void
gst_gl_window_class_init (GstGLWindowClass * klass)
{
g_type_class_add_private (klass, sizeof (GstGLWindowPrivate));
G_OBJECT_CLASS (klass)->finalize = gst_gl_window_finalize;
}
GstGLWindow *
gst_gl_window_new (GstGLDisplay * display)
{
GstGLWindow *window = NULL;
const gchar *user_choice;
static volatile gsize _init = 0;
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);
#if GST_GL_HAVE_WINDOW_X11
if (!window && (!user_choice || g_strstr_len (user_choice, 3, "x11")))
window = GST_GL_WINDOW (gst_gl_window_x11_new ());
#endif
#if GST_GL_HAVE_WINDOW_WIN32
if (!window && (!user_choice || g_strstr_len (user_choice, 5, "win32")))
window = GST_GL_WINDOW (gst_gl_window_win32_new ());
#endif
#if GST_GL_HAVE_WINDOW_COCOA
if (!window && (!user_choice || g_strstr_len (user_choice, 5, "cocoa"))) {
window = GST_GL_WINDOW (gst_gl_window_cocoa_new ());
}
#endif
#if GST_GL_HAVE_WINDOW_WAYLAND
if (!window && (!user_choice || g_strstr_len (user_choice, 7, "wayland")))
window = GST_GL_WINDOW (gst_gl_window_wayland_egl_new ());
#endif
#if GST_GL_HAVE_WINDOW_ANDROID
if (!window && (!user_choice || g_strstr_len (user_choice, 7, "android")))
window = GST_GL_WINDOW (gst_gl_window_android_egl_new ());
#endif
if (!window) {
/* subclass returned a NULL window */
GST_WARNING ("Could not create window. user specified %s",
user_choice ? user_choice : "(null)");
return NULL;
}
window->priv->display = display;
return window;
}
static void
gst_gl_window_finalize (GObject * object)
{
GstGLWindow *window = GST_GL_WINDOW (object);
g_weak_ref_clear (&window->context_ref);
G_OBJECT_CLASS (gst_gl_window_parent_class)->finalize (object);
}
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->priv->alive = TRUE;
window_class->run (window);
GST_GL_WINDOW_UNLOCK (window);
}
void
gst_gl_window_quit (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->quit != NULL);
GST_GL_WINDOW_LOCK (window);
window->priv->alive = FALSE;
window_class->quit (window);
GST_INFO ("quit sent to gl window loop");
GST_GL_WINDOW_UNLOCK (window);
GST_INFO ("quit received from gl 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, GDestroyNotify destroy_notify)
{
g_return_if_fail (GST_GL_IS_WINDOW (window));
GST_GL_WINDOW_LOCK (window);
if (window->draw_notify)
window->draw_notify (window->draw_data);
window->draw = callback;
window->draw_data = data;
window->draw_notify = destroy_notify;
GST_GL_WINDOW_UNLOCK (window);
}
void
gst_gl_window_set_resize_callback (GstGLWindow * window,
GstGLWindowResizeCB callback, gpointer data, GDestroyNotify destroy_notify)
{
g_return_if_fail (GST_GL_IS_WINDOW (window));
GST_GL_WINDOW_LOCK (window);
if (window->resize_notify)
window->resize_notify (window->resize_data);
window->resize = callback;
window->resize_data = data;
window->resize_notify = destroy_notify;
GST_GL_WINDOW_UNLOCK (window);
}
void
gst_gl_window_set_close_callback (GstGLWindow * window, GstGLWindowCB callback,
gpointer data, GDestroyNotify destroy_notify)
{
g_return_if_fail (GST_GL_IS_WINDOW (window));
GST_GL_WINDOW_LOCK (window);
if (window->close_notify)
window->close_notify (window->close_data);
window->close = callback;
window->close_data = data;
window->close_notify = destroy_notify;
GST_GL_WINDOW_UNLOCK (window);
}
gboolean
gst_gl_window_is_running (GstGLWindow * window)
{
return window->priv->alive;
}
guintptr
gst_gl_window_get_display (GstGLWindow * window)
{
guintptr ret;
GstGLWindowClass *window_class;
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_display != NULL, 0);
GST_GL_WINDOW_LOCK (window);
ret = window_class->get_display (window);
GST_GL_WINDOW_UNLOCK (window);
return ret;
}
guintptr
gst_gl_window_get_window_handle (GstGLWindow * window)
{
guintptr ret;
GstGLWindowClass *window_class;
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_window_handle != NULL, 0);
GST_GL_WINDOW_LOCK (window);
ret = window_class->get_window_handle (window);
GST_GL_WINDOW_UNLOCK (window);
return ret;
}
GstGLContext *
gst_gl_window_get_context (GstGLWindow * window)
{
g_return_val_if_fail (GST_GL_IS_WINDOW (window), NULL);
return (GstGLContext *) g_weak_ref_get (&window->context_ref);
}