gstreamer/gst-libs/gst/gl/gstglwindow.c
Vasilis Liaskovitis f803a9e746 GstGLWindow: Introduce navigation thread
This thread dispatches navigation events. It is needed to avoid deadlocks
between window backend threads that emit navigation events (e.g. X11/GMainLoop
thread) and consumers of navigation events such as glimagesink, see
https://bugzilla.gnome.org/show_bug.cgi?id=733661

GstGlWindow_x11 thread is changed to invoke the navigation thread for navigation
dispatching, instead of emiting the event itself. Othe backends beside X11 do
not dispatch navigation events yet, but should use this thread when dispatching
these events in the future.

The navigation thread is currently part of GstGLWindow and not implemented in
separate subclasses / backends. This will be needed in the future.

gst_gl_window_x11_get_surface_dimensions is also changed to use a cached value
of the window's width, height. These values are now retrieved in the X11
thread, function gst_gl_window_x11_handle_event. This change is needed because
otherwise the XGetWindowAttributes gets called from the navigation thread,
leading to xlib aborting due to multithreaded access (if XInitThreads is not
called before, as is the case for gst-launch)
2017-12-09 19:31:46 +00:00

939 lines
25 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.
*/
/**
* SECTION:gstglwindow
* @short_description: window/surface abstraction
* @title: GstGLWindow
* @see_also: #GstGLContext, #GstGLDisplay
*
* GstGLWindow represents a window that elements can render into. A window can
* either be a user visible window (onscreen) or hidden (offscreen).
*/
#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
#if GST_GL_HAVE_WINDOW_EAGL
#include "eagl/gstglwindow_eagl.h"
#endif
#if GST_GL_HAVE_WINDOW_DISPMANX
#include "dispmanx/gstglwindow_dispmanx_egl.h"
#endif
#define USING_OPENGL(context) (gst_gl_context_check_gl_version (context, GST_GL_API_OPENGL, 1, 0))
#define USING_OPENGL3(context) (gst_gl_context_check_gl_version (context, GST_GL_API_OPENGL3, 3, 1))
#define USING_GLES(context) (gst_gl_context_check_gl_version (context, GST_GL_API_GLES, 1, 0))
#define USING_GLES2(context) (gst_gl_context_check_gl_version (context, GST_GL_API_GLES2, 2, 0))
#define USING_GLES3(context) (gst_gl_context_check_gl_version (context, GST_GL_API_GLES2, 3, 0))
#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, GST_TYPE_OBJECT);
#define GST_GL_WINDOW_GET_PRIVATE(o) \
(G_TYPE_INSTANCE_GET_PRIVATE((o), GST_GL_TYPE_WINDOW, GstGLWindowPrivate))
static void gst_gl_window_default_send_message (GstGLWindow * window,
GstGLWindowCB callback, gpointer data);
static gpointer gst_gl_window_navigation_thread (GstGLWindow * window);
void gst_gl_window_run_navigation (GstGLWindow * window);
void gst_gl_window_open_navigation (GstGLWindow * window);
void gst_gl_window_close_navigation (GstGLWindow * window);
void gst_gl_window_quit_navigation (GstGLWindow * window);
struct _GstGLWindowPrivate
{
GThread *gl_thread;
GThread *navigation_thread;
gboolean alive;
};
static void gst_gl_window_finalize (GObject * object);
typedef struct _GstGLDummyWindow
{
GstGLWindow parent;
guintptr handle;
GMainContext *main_context;
GMainLoop *loop;
} GstGLDummyWindow;
typedef struct _GstGLDummyWindowCass
{
GstGLWindowClass parent;
} GstGLDummyWindowClass;
GstGLDummyWindow *gst_gl_dummy_window_new (void);
enum
{
SIGNAL_0,
EVENT_MOUSE_SIGNAL,
EVENT_KEY_SIGNAL,
LAST_SIGNAL
};
static guint gst_gl_window_signals[LAST_SIGNAL] = { 0 };
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);
g_mutex_init (&window->nav_lock);
g_cond_init (&window->nav_create_cond);
g_cond_init (&window->nav_destroy_cond);
window->nav_created = FALSE;
window->nav_alive = FALSE;
window->is_drawing = 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));
klass->send_message = GST_DEBUG_FUNCPTR (gst_gl_window_default_send_message);
G_OBJECT_CLASS (klass)->finalize = gst_gl_window_finalize;
/**
* GstGLWindow::mouse-event:
* @object: the #GstGLWindow
* @id: the name of the event
* @button: the id of the button
* @x: the x coordinate of the mouse event
* @y: the y coordinate of the mouse event
*
* Will be emitted when a mouse event is received by the GstGLwindow.
*
*/
gst_gl_window_signals[EVENT_MOUSE_SIGNAL] =
g_signal_new ("mouse-event", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST, 0, NULL, NULL, g_cclosure_marshal_generic,
G_TYPE_NONE, 4, G_TYPE_STRING, G_TYPE_INT, G_TYPE_DOUBLE, G_TYPE_DOUBLE);
/**
* GstGLWindow::key-event:
* @object: the #GstGLWindow
* @id: the name of the event
* @key: the id of the key pressed
*
* Will be emitted when a key event is received by the GstGLwindow.
*
*/
gst_gl_window_signals[EVENT_KEY_SIGNAL] =
g_signal_new ("key-event", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST, 0, NULL, NULL, g_cclosure_marshal_generic,
G_TYPE_NONE, 2, G_TYPE_STRING, G_TYPE_STRING);
}
/**
* gst_gl_window_new:
* @display: a #GstGLDisplay
*
* Returns: (transfer full): a new #GstGLWindow using @display's connection
*/
GstGLWindow *
gst_gl_window_new (GstGLDisplay * display)
{
GstGLWindow *window = NULL;
const gchar *user_choice;
static volatile gsize _init = 0;
g_return_val_if_fail (display != 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);
#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_X11
if (!window && (!user_choice || g_strstr_len (user_choice, 3, "x11")))
window = GST_GL_WINDOW (gst_gl_window_x11_new (display));
#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_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_DISPMANX
if (!window && (!user_choice || g_strstr_len (user_choice, 8, "dispmanx")))
window = GST_GL_WINDOW (gst_gl_window_dispmanx_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 GST_GL_HAVE_WINDOW_EAGL
if (!window && (!user_choice || g_strstr_len (user_choice, 4, "eagl")))
window = GST_GL_WINDOW (gst_gl_window_eagl_new ());
#endif
if (!window) {
/* subclass returned a NULL window */
GST_WARNING ("Could not create window. user specified %s, creating dummy"
" window", user_choice ? user_choice : "(null)");
window = GST_GL_WINDOW (gst_gl_dummy_window_new ());
}
window->display = gst_object_ref (display);
g_mutex_lock (&window->nav_lock);
if (!window->nav_created) {
window->priv->navigation_thread = g_thread_new ("gstglnavigation",
(GThreadFunc) gst_gl_window_navigation_thread, window);
g_cond_wait (&window->nav_create_cond, &window->nav_lock);
window->nav_created = TRUE;
}
g_mutex_unlock (&window->nav_lock);
return window;
}
static void
gst_gl_window_finalize (GObject * object)
{
GstGLWindow *window = GST_GL_WINDOW (object);
if (window->nav_alive) {
g_mutex_lock (&window->nav_lock);
GST_INFO ("send quit navigation loop");
gst_gl_window_quit_navigation (window);
while (window->nav_alive) {
g_cond_wait (&window->nav_destroy_cond, &window->nav_lock);
}
g_mutex_unlock (&window->nav_lock);
}
g_weak_ref_clear (&window->context_ref);
g_mutex_clear (&window->lock);
g_mutex_clear (&window->nav_lock);
g_cond_clear (&window->nav_create_cond);
g_cond_clear (&window->nav_destroy_cond);
gst_object_unref (window->display);
G_OBJECT_CLASS (gst_gl_window_parent_class)->finalize (object);
}
/**
* gst_gl_window_set_window_handle:
* @window: a #GstGLWindow
* @handle: handle to the window
*
* Sets the window that this @window should render into. Some implementations
* require this to be called with a valid handle before drawing can commence.
*/
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);
window_class->set_window_handle (window, handle);
}
/**
* gst_gl_window_draw_unlocked:
* @window: a #GstGLWindow
* @width: requested width of the window
* @height: requested height of the window
*
* Redraw the window contents. Implementations should invoke the draw callback.
*/
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);
}
/**
* gst_gl_window_draw:
* @window: a #GstGLWindow
* @width: requested width of the window
* @height: requested height of the window
*
* Redraw the window contents. Implementations should invoke the draw callback.
*/
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);
/* avoid to overload the drawer */
if (window->is_drawing) {
return;
}
window_class->draw (window, width, height);
}
/**
* gst_gl_window_run:
* @window: a #GstGLWindow
*
* Start the execution of the runloop.
*/
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);
window->priv->alive = TRUE;
window_class->run (window);
}
/**
* gst_gl_window_run_navigation:
* @window: a #GstGLWindow
*
* Start the execution of the navigation runloop.
*/
void
gst_gl_window_run_navigation (GstGLWindow * window)
{
g_return_if_fail (GST_GL_IS_WINDOW (window));
g_return_if_fail (window->navigation_context != NULL);
g_return_if_fail (window->navigation_loop != NULL);
g_main_loop_run (window->navigation_loop);
}
/**
* gst_gl_window_quit:
* @window: a #GstGLWindow
*
* Quit the runloop's execution.
*/
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);
}
typedef struct _GstGLSyncMessage
{
GMutex lock;
GCond cond;
gboolean fired;
GstGLWindowCB callback;
gpointer data;
} GstGLSyncMessage;
static void
_run_message_sync (GstGLSyncMessage * message)
{
g_mutex_lock (&message->lock);
if (message->callback)
message->callback (message->data);
message->fired = TRUE;
g_cond_signal (&message->cond);
g_mutex_unlock (&message->lock);
}
void
gst_gl_window_default_send_message (GstGLWindow * window,
GstGLWindowCB callback, gpointer data)
{
GstGLSyncMessage message;
message.callback = callback;
message.data = data;
message.fired = FALSE;
g_mutex_init (&message.lock);
g_cond_init (&message.cond);
gst_gl_window_send_message_async (window, (GstGLWindowCB) _run_message_sync,
&message, NULL);
g_mutex_lock (&message.lock);
/* block until opengl calls have been executed in the gl thread */
while (!message.fired)
g_cond_wait (&message.cond, &message.lock);
g_mutex_unlock (&message.lock);
g_mutex_clear (&message.lock);
g_cond_clear (&message.cond);
}
/**
* gst_gl_window_send_message:
* @window: a #GstGLWindow
* @callback: (scope async): function to invoke
* @data: (closure): data to invoke @callback with
*
* Invoke @callback with data on the window thread. @callback is guarenteed to
* have executed when this function returns.
*/
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->send_message != NULL);
window_class->send_message (window, callback, data);
}
/**
* gst_gl_window_send_message_async:
* @window: a #GstGLWindow
* @callback: (scope async): function to invoke
* @data: (closure): data to invoke @callback with
* @destroy: (destroy): called when @data is not needed anymore
*
* Invoke @callback with @data on the window thread. The callback may not
* have been executed when this function returns.
*/
void
gst_gl_window_send_message_async (GstGLWindow * window, GstGLWindowCB callback,
gpointer data, GDestroyNotify destroy)
{
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->send_message_async != NULL);
window_class->send_message_async (window, callback, data, destroy);
}
/**
* gst_gl_window_set_draw_callback:
* @window: a #GstGLWindow
* @callback: (scope notified): function to invoke
* @data: (closure): data to invoke @callback with
* @destroy_notify: (destroy): called when @data is not needed any more
*
* Sets the draw callback called everytime gst_gl_window_draw() is called
*/
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);
}
/**
* gst_gl_window_set_resize_callback:
* @window: a #GstGLWindow
* @callback: (scope notified): function to invoke
* @data: (closure): data to invoke @callback with
* @destroy_notify: (destroy): called when @data is not needed any more
*
* Sets the resize callback called everytime a resize of the window occurs.
*/
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);
}
/**
* gst_gl_window_set_close_callback:
* @window: a #GstGLWindow
* @callback: (scope notified): function to invoke
* @data: (closure): data to invoke @callback with
* @destroy_notify: (destroy): called when @data is not needed any more
*
* Sets the callback called when the window is about to close.
*/
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);
}
/**
* gst_gl_window_is_running:
* @window: a #GstGLWindow
*
* Whether the runloop is running
*/
gboolean
gst_gl_window_is_running (GstGLWindow * window)
{
return window->priv->alive;
}
/**
* gst_gl_window_get_display:
* @window: a #GstGLWindow
*
* Returns: the windowing system display handle for this @window
*/
guintptr
gst_gl_window_get_display (GstGLWindow * window)
{
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);
return window_class->get_display (window);
}
/**
* gst_gl_window_get_window_handle:
* @window: a #GstGLWindow
*
* Returns: the window handle we are currently rendering into
*/
guintptr
gst_gl_window_get_window_handle (GstGLWindow * window)
{
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);
return window_class->get_window_handle (window);
}
/**
* gst_gl_window_get_context:
* @window: a #GstGLWindow
*
* Returns: (transfer full): the #GstGLContext associated with this @window
*/
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);
}
/**
* gst_gl_window_get_surface_dimensions:
* @window: a #GstGLWindow
* @width: (out): resulting surface width
* @height: (out): resulting surface height
*/
void
gst_gl_window_get_surface_dimensions (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->get_surface_dimensions != NULL);
window_class->get_surface_dimensions (window, width, height);
}
GType gst_gl_dummy_window_get_type (void);
G_DEFINE_TYPE (GstGLDummyWindow, gst_gl_dummy_window, GST_GL_TYPE_WINDOW);
static gboolean
gst_gl_dummy_window_open (GstGLWindow * window, GError ** error)
{
GstGLDummyWindow *dummy = (GstGLDummyWindow *) window;
dummy->main_context = g_main_context_new ();
dummy->loop = g_main_loop_new (dummy->main_context, FALSE);
return TRUE;
}
static void
gst_gl_dummy_window_close (GstGLWindow * window)
{
GstGLDummyWindow *dummy = (GstGLDummyWindow *) window;
g_main_loop_unref (dummy->loop);
g_main_context_unref (dummy->main_context);
}
static void
gst_gl_dummy_window_quit (GstGLWindow * window)
{
GstGLDummyWindow *dummy = (GstGLDummyWindow *) window;
g_main_loop_quit (dummy->loop);
}
static void
gst_gl_dummy_window_run (GstGLWindow * window)
{
GstGLDummyWindow *dummy = (GstGLDummyWindow *) window;
g_main_loop_run (dummy->loop);
}
void
gst_gl_window_open_navigation (GstGLWindow * window)
{
g_return_if_fail (GST_GL_IS_WINDOW (window));
g_mutex_lock (&window->nav_lock);
window->navigation_context = g_main_context_new ();
window->navigation_loop = g_main_loop_new (window->navigation_context, FALSE);
g_main_context_push_thread_default (window->navigation_context);
window->nav_alive = TRUE;
g_cond_signal (&window->nav_create_cond);
g_mutex_unlock (&window->nav_lock);
}
void
gst_gl_window_close_navigation (GstGLWindow * window)
{
g_return_if_fail (GST_GL_IS_WINDOW (window));
g_return_if_fail (window->navigation_context != NULL);
g_return_if_fail (window->navigation_loop != NULL);
g_mutex_lock (&window->nav_lock);
window->nav_alive = FALSE;
g_main_context_pop_thread_default (window->navigation_context);
g_main_loop_unref (window->navigation_loop);
g_main_context_unref (window->navigation_context);
g_cond_signal (&window->nav_destroy_cond);
g_mutex_unlock (&window->nav_lock);
}
void
gst_gl_window_quit_navigation (GstGLWindow * window)
{
g_return_if_fail (GST_GL_IS_WINDOW (window));
g_main_loop_quit (window->navigation_loop);
}
static gpointer
gst_gl_window_navigation_thread (GstGLWindow * window)
{
gst_gl_window_open_navigation (window);
gst_gl_window_run_navigation (window);
GST_INFO ("navigation loop exited\n");
gst_gl_window_close_navigation (window);
return NULL;
}
typedef struct _GstGLMessage
{
GstGLWindowCB callback;
gpointer data;
GDestroyNotify destroy;
} GstGLMessage;
static gboolean
_run_message (GstGLMessage * message)
{
if (message->callback)
message->callback (message->data);
if (message->destroy)
message->destroy (message->data);
g_slice_free (GstGLMessage, message);
return FALSE;
}
static void
gst_gl_dummy_window_send_message_async (GstGLWindow * window,
GstGLWindowCB callback, gpointer data, GDestroyNotify destroy)
{
GstGLDummyWindow *dummy;
GstGLMessage *message;
dummy = (GstGLDummyWindow *) window;
message = g_slice_new (GstGLMessage);
message->callback = callback;
message->data = data;
message->destroy = destroy;
g_main_context_invoke (dummy->main_context, (GSourceFunc) _run_message,
message);
}
static void
gst_gl_dummy_window_set_window_handle (GstGLWindow * window, guintptr handle)
{
GstGLDummyWindow *dummy = (GstGLDummyWindow *) window;
dummy->handle = handle;
}
static guintptr
gst_gl_dummy_window_get_window_handle (GstGLWindow * window)
{
GstGLDummyWindow *dummy = (GstGLDummyWindow *) window;
return (guintptr) dummy->handle;
}
struct draw
{
GstGLDummyWindow *window;
guint width, height;
};
static void
draw_cb (gpointer data)
{
struct draw *draw_data = data;
GstGLDummyWindow *dummy = draw_data->window;
GstGLWindow *window = GST_GL_WINDOW (dummy);
GstGLContext *context = gst_gl_window_get_context (window);
GstGLContextClass *context_class = GST_GL_CONTEXT_GET_CLASS (context);
if (window->draw)
window->draw (window->draw_data);
context_class->swap_buffers (context);
gst_object_unref (context);
}
static void
gst_gl_dummy_window_draw (GstGLWindow * window, guint width, guint height)
{
struct draw draw_data;
draw_data.window = (GstGLDummyWindow *) window;
draw_data.width = width;
draw_data.height = height;
gst_gl_window_send_message (window, (GstGLWindowCB) draw_cb, &draw_data);
}
static guintptr
gst_gl_dummy_window_get_display (GstGLWindow * window)
{
return 0;
}
static void
gst_gl_dummy_window_get_surface_dimensions (GstGLWindow * window, guint * width,
guint * height)
{
}
static void
gst_gl_dummy_window_class_init (GstGLDummyWindowClass * klass)
{
GstGLWindowClass *window_class = (GstGLWindowClass *) klass;
window_class->get_display =
GST_DEBUG_FUNCPTR (gst_gl_dummy_window_get_display);
window_class->get_window_handle =
GST_DEBUG_FUNCPTR (gst_gl_dummy_window_get_window_handle);
window_class->set_window_handle =
GST_DEBUG_FUNCPTR (gst_gl_dummy_window_set_window_handle);
window_class->draw_unlocked = GST_DEBUG_FUNCPTR (gst_gl_dummy_window_draw);
window_class->draw = GST_DEBUG_FUNCPTR (gst_gl_dummy_window_draw);
window_class->run = GST_DEBUG_FUNCPTR (gst_gl_dummy_window_run);
window_class->quit = GST_DEBUG_FUNCPTR (gst_gl_dummy_window_quit);
window_class->send_message_async =
GST_DEBUG_FUNCPTR (gst_gl_dummy_window_send_message_async);
window_class->open = GST_DEBUG_FUNCPTR (gst_gl_dummy_window_open);
window_class->close = GST_DEBUG_FUNCPTR (gst_gl_dummy_window_close);
window_class->get_surface_dimensions =
GST_DEBUG_FUNCPTR (gst_gl_dummy_window_get_surface_dimensions);
}
static void
gst_gl_dummy_window_init (GstGLDummyWindow * dummy)
{
dummy->handle = 0;
}
GstGLDummyWindow *
gst_gl_dummy_window_new (void)
{
return g_object_new (gst_gl_dummy_window_get_type (), NULL);
}
gboolean
gst_gl_window_key_event_cb (gpointer data)
{
struct key_event *key_data = (struct key_event *) data;
GST_DEBUG
("%s called data struct %p window %p key %s event %s ",
__func__, key_data, key_data->window, key_data->key_str,
key_data->event_type);
gst_gl_window_send_key_event (GST_GL_WINDOW (key_data->window),
key_data->event_type, key_data->key_str);
g_slice_free (struct key_event, key_data);
return G_SOURCE_REMOVE;
}
void
gst_gl_window_send_key_event (GstGLWindow * window, const char *event_type,
const char *key_str)
{
g_signal_emit (window, gst_gl_window_signals[EVENT_KEY_SIGNAL], 0,
event_type, key_str);
}
gboolean
gst_gl_window_mouse_event_cb (gpointer data)
{
struct mouse_event *mouse_data = (struct mouse_event *) data;
GST_DEBUG ("%s called data struct %p mouse event %s button %d at %g, %g",
__func__, mouse_data, mouse_data->event_type, mouse_data->button,
mouse_data->posx, mouse_data->posy);
gst_gl_window_send_mouse_event (GST_GL_WINDOW (mouse_data->window),
mouse_data->event_type, mouse_data->button, mouse_data->posx,
mouse_data->posy);
g_slice_free (struct mouse_event, mouse_data);
return G_SOURCE_REMOVE;
}
void
gst_gl_window_send_mouse_event (GstGLWindow * window, const char *event_type,
int button, double posx, double posy)
{
g_signal_emit (window, gst_gl_window_signals[EVENT_MOUSE_SIGNAL], 0,
event_type, button, posx, posy);
}