gstreamer/gst-libs/gst/gl/x11/gstglwindow_x11.c
Matthew Waters 3af4ce25ff [692/906] window_x11: add XError trapping
some functions in GLX can fail if the implementation does not support
certain features we ask for (i.e. GL 3) bringing down the entire
application
2014-03-15 18:36:55 +01:00

866 lines
26 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 <gst/gst.h>
#include <locale.h>
#include "gstglwindow_x11.h"
#if GST_GL_HAVE_PLATFORM_GLX
# include "gstglwindow_x11_glx.h"
#endif
#if GST_GL_HAVE_PLATFORM_EGL
# include "gstglwindow_x11_egl.h"
#endif
#define GST_GL_WINDOW_X11_GET_PRIVATE(o) \
(G_TYPE_INSTANCE_GET_PRIVATE((o), GST_GL_TYPE_WINDOW_X11, GstGLWindowX11Private))
#define GST_CAT_DEFAULT gst_gl_window_debug
#define gst_gl_window_x11_parent_class parent_class
G_DEFINE_ABSTRACT_TYPE (GstGLWindowX11, gst_gl_window_x11, GST_GL_TYPE_WINDOW);
/* X error trap */
static int TrappedErrorCode = 0;
static int (*old_error_handler) (Display *, XErrorEvent *);
enum
{
ARG_0,
ARG_DISPLAY
};
struct _GstGLWindowX11Private
{
gboolean activate;
gboolean activate_result;
};
guintptr gst_gl_window_x11_get_gl_context (GstGLWindow * window);
gboolean gst_gl_window_x11_activate (GstGLWindow * window, gboolean activate);
void gst_gl_window_x11_set_window_handle (GstGLWindow * window,
guintptr handle);
void gst_gl_window_x11_draw_unlocked (GstGLWindow * window, guint width,
guint height);
void gst_gl_window_x11_draw (GstGLWindow * window, guint width, guint height);
void gst_gl_window_x11_run (GstGLWindow * window);
void gst_gl_window_x11_quit (GstGLWindow * window, GstGLWindowCB callback,
gpointer data);
void gst_gl_window_x11_send_message (GstGLWindow * window,
GstGLWindowCB callback, gpointer data);
gboolean gst_gl_window_x11_create_context (GstGLWindow * window,
GstGLAPI gl_api, guintptr external_gl_context, GError ** error);
static gboolean gst_gl_window_x11_create_window (GstGLWindowX11 * window_x11);
/* Must be called in the gl thread */
static void
gst_gl_window_x11_finalize (GObject * object)
{
GstGLWindowX11 *window_x11 = GST_GL_WINDOW_X11 (object);
GstGLWindowX11Class *window_class = GST_GL_WINDOW_X11_GET_CLASS (window_x11);
XEvent event;
Bool ret = TRUE;
GST_GL_WINDOW_LOCK (window_x11);
window_x11->parent_win = 0;
if (window_x11->device) {
if (window_x11->internal_win_id)
XUnmapWindow (window_x11->device, window_x11->internal_win_id);
ret = window_class->activate (window_x11, FALSE);
if (!ret)
GST_DEBUG ("failed to release opengl context");
window_class->destroy_context (window_x11);
XFree (window_x11->visual_info);
if (window_x11->internal_win_id) {
XReparentWindow (window_x11->device, window_x11->internal_win_id,
window_x11->root, 0, 0);
XDestroyWindow (window_x11->device, window_x11->internal_win_id);
}
XSync (window_x11->device, FALSE);
while (XPending (window_x11->device))
XNextEvent (window_x11->device, &event);
XSetCloseDownMode (window_x11->device, DestroyAll);
/*XAddToSaveSet (display, w)
Display *display;
Window w; */
//FIXME: it seems it causes destroy all created windows, even by other display connection:
//This is case in: gst-launch-0.10 videotestsrc ! tee name=t t. ! queue ! glimagesink t. ! queue ! glimagesink
//When the first window is closed and so its display is closed by the following line, then the other Window managed by the
//other glimagesink, is not useable and so each opengl call causes a segmentation fault.
//Maybe the solution is to use: XAddToSaveSet
//The following line is commented to avoid the disagreement explained before.
//XCloseDisplay (window_x11->device);
GST_DEBUG ("display receiver closed");
XCloseDisplay (window_x11->disp_send);
GST_DEBUG ("display sender closed");
}
g_cond_clear (&window_x11->cond_send_message);
GST_GL_WINDOW_UNLOCK (window_x11);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gst_gl_window_x11_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstGLWindowX11 *window_x11;
g_return_if_fail (GST_GL_IS_WINDOW_X11 (object));
window_x11 = GST_GL_WINDOW_X11 (object);
switch (prop_id) {
case ARG_DISPLAY:
window_x11->display_name = g_strdup (g_value_get_string (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_gl_window_x11_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstGLWindowX11 *window_x11;
g_return_if_fail (GST_GL_IS_WINDOW_X11 (object));
window_x11 = GST_GL_WINDOW_X11 (object);
switch (prop_id) {
case ARG_DISPLAY:
g_value_set_string (value, window_x11->display_name);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_gl_window_x11_class_init (GstGLWindowX11Class * klass)
{
GObjectClass *obj_class = G_OBJECT_CLASS (klass);
GstGLWindowClass *window_class = (GstGLWindowClass *) klass;
g_type_class_add_private (klass, sizeof (GstGLWindowX11Private));
obj_class->finalize = gst_gl_window_x11_finalize;
obj_class->set_property = gst_gl_window_x11_set_property;
obj_class->get_property = gst_gl_window_x11_get_property;
g_object_class_install_property (obj_class, ARG_DISPLAY,
g_param_spec_string ("display", "Display", "X Display name", NULL,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
window_class->create_context =
GST_DEBUG_FUNCPTR (gst_gl_window_x11_create_context);
window_class->get_gl_context =
GST_DEBUG_FUNCPTR (gst_gl_window_x11_get_gl_context);
window_class->activate = GST_DEBUG_FUNCPTR (gst_gl_window_x11_activate);
window_class->set_window_handle =
GST_DEBUG_FUNCPTR (gst_gl_window_x11_set_window_handle);
window_class->draw_unlocked =
GST_DEBUG_FUNCPTR (gst_gl_window_x11_draw_unlocked);
window_class->draw = GST_DEBUG_FUNCPTR (gst_gl_window_x11_draw);
window_class->run = GST_DEBUG_FUNCPTR (gst_gl_window_x11_run);
window_class->quit = GST_DEBUG_FUNCPTR (gst_gl_window_x11_quit);
window_class->send_message =
GST_DEBUG_FUNCPTR (gst_gl_window_x11_send_message);
}
static void
gst_gl_window_x11_init (GstGLWindowX11 * window)
{
window->priv = GST_GL_WINDOW_X11_GET_PRIVATE (window);
}
/* Must be called in the gl thread */
GstGLWindowX11 *
gst_gl_window_x11_new (void)
{
GstGLWindowX11 *window = NULL;
const gchar *user_choice;
user_choice = g_getenv ("GST_GL_PLATFORM");
GST_INFO ("Attempting to create x11 window, user platform choice:%s",
user_choice ? user_choice : "(null)");
#if GST_GL_HAVE_PLATFORM_GLX
if (!window && (!user_choice || g_strstr_len (user_choice, 3, "glx") != NULL))
window = GST_GL_WINDOW_X11 (gst_gl_window_x11_glx_new ());
#endif /* GST_GL_HAVE_PLATFORM_GLX */
#ifdef GST_GL_HAVE_PLATFORM_EGL
if (!window && (!user_choice || g_strstr_len (user_choice, 3, "egl") != NULL))
window = GST_GL_WINDOW_X11 (gst_gl_window_x11_egl_new ());
#endif /* GST_GL_HAVE_PLATFORM_EGL */
if (!window) {
GST_WARNING ("Failed to create x11 window, user_choice:%s",
user_choice ? user_choice : "NULL");
return NULL;
}
return window;
}
gboolean
gst_gl_window_x11_create_context (GstGLWindow * window,
GstGLAPI gl_api, guintptr external_gl_context, GError ** error)
{
GstGLWindowX11 *window_x11 = GST_GL_WINDOW_X11 (window);
GstGLWindowX11Class *window_class = GST_GL_WINDOW_X11_GET_CLASS (window_x11);
setlocale (LC_NUMERIC, "C");
gst_gl_window_set_need_lock (GST_GL_WINDOW (window_x11), TRUE);
g_cond_init (&window_x11->cond_send_message);
window_x11->running = TRUE;
window_x11->visible = FALSE;
window_x11->parent_win = 0;
window_x11->allow_extra_expose_events = TRUE;
window_x11->device = XOpenDisplay (window_x11->display_name);
if (window_x11->device == NULL) {
g_set_error (error, GST_GL_WINDOW_ERROR,
GST_GL_WINDOW_ERROR_RESOURCE_UNAVAILABLE,
"Failed to connect to X display server");
goto failure;
}
XSynchronize (window_x11->device, FALSE);
GST_LOG ("gl device id: %ld", (gulong) window_x11->device);
window_x11->disp_send = XOpenDisplay (window_x11->display_name);
XSynchronize (window_x11->disp_send, FALSE);
GST_LOG ("gl display sender: %ld", (gulong) window_x11->disp_send);
window_x11->screen = DefaultScreenOfDisplay (window_x11->device);
window_x11->screen_num = DefaultScreen (window_x11->device);
window_x11->visual =
DefaultVisual (window_x11->device, window_x11->screen_num);
window_x11->root = DefaultRootWindow (window_x11->device);
window_x11->white = XWhitePixel (window_x11->device, window_x11->screen_num);
window_x11->black = XBlackPixel (window_x11->device, window_x11->screen_num);
window_x11->depth = DefaultDepthOfScreen (window_x11->screen);
GST_LOG ("gl root id: %lud", (gulong) window_x11->root);
window_x11->device_width =
DisplayWidth (window_x11->device, window_x11->screen_num);
window_x11->device_height =
DisplayHeight (window_x11->device, window_x11->screen_num);
window_x11->connection = ConnectionNumber (window_x11->device);
if (!window_class->choose_format (window_x11, error)) {
goto failure;
}
gst_gl_window_x11_create_window (window_x11);
if (!window_class->create_context (window_x11, gl_api, external_gl_context,
error)) {
goto failure;
}
if (!window_class->activate (window_x11, TRUE)) {
g_set_error (error, GST_GL_WINDOW_ERROR, GST_GL_WINDOW_ERROR_CREATE_CONTEXT,
"Failed to make context current");
goto failure;
}
return TRUE;
failure:
return FALSE;
}
static gboolean
gst_gl_window_x11_create_window (GstGLWindowX11 * window_x11)
{
XSetWindowAttributes win_attr;
XTextProperty text_property;
XWMHints wm_hints;
unsigned long mask;
const gchar *title = "OpenGL renderer";
Atom wm_atoms[3];
static gint x = 0;
static gint y = 0;
if (window_x11->visual_info->visual != window_x11->visual)
GST_LOG ("selected visual is different from the default");
GST_LOG ("visual XID:%d, screen:%d, visualid:%d, depth:%d, class:%d, "
"red_mask:%ld, green_mask:%ld, blue_mask:%ld bpp:%d",
(gint) XVisualIDFromVisual (window_x11->visual_info->visual),
window_x11->visual_info->screen, (gint) window_x11->visual_info->visualid,
window_x11->visual_info->depth, window_x11->visual_info->class,
window_x11->visual_info->red_mask, window_x11->visual_info->green_mask,
window_x11->visual_info->blue_mask,
window_x11->visual_info->bits_per_rgb);
win_attr.event_mask =
StructureNotifyMask | ExposureMask | VisibilityChangeMask;
win_attr.do_not_propagate_mask = NoEventMask;
win_attr.background_pixmap = None;
win_attr.background_pixel = 0;
win_attr.border_pixel = 0;
win_attr.colormap =
XCreateColormap (window_x11->device, window_x11->root,
window_x11->visual_info->visual, AllocNone);
mask = CWBackPixmap | CWBorderPixel | CWColormap | CWEventMask;
x += 20;
y += 20;
window_x11->internal_win_id =
XCreateWindow (window_x11->device, window_x11->root, x, y, 1, 1, 0,
window_x11->visual_info->depth, InputOutput,
window_x11->visual_info->visual, mask, &win_attr);
XSync (window_x11->device, FALSE);
XSetWindowBackgroundPixmap (window_x11->device, window_x11->internal_win_id,
None);
GST_LOG ("gl window id: %lud", (gulong) window_x11->internal_win_id);
GST_LOG ("gl window props: x:%d y:%d", x, y);
wm_atoms[0] = XInternAtom (window_x11->device, "WM_DELETE_WINDOW", True);
if (wm_atoms[0] == None)
GST_DEBUG ("Cannot create WM_DELETE_WINDOW");
wm_atoms[1] = XInternAtom (window_x11->device, "WM_GL_WINDOW", False);
if (wm_atoms[1] == None)
GST_DEBUG ("Cannot create WM_GL_WINDOW");
wm_atoms[2] = XInternAtom (window_x11->device, "WM_QUIT_LOOP", False);
if (wm_atoms[2] == None)
GST_DEBUG ("Cannot create WM_QUIT_LOOP");
XSetWMProtocols (window_x11->device, window_x11->internal_win_id, wm_atoms,
2);
wm_hints.flags = StateHint;
wm_hints.initial_state = NormalState;
wm_hints.input = False;
XStringListToTextProperty ((char **) &title, 1, &text_property);
XSetWMProperties (window_x11->device, window_x11->internal_win_id,
&text_property, &text_property, 0, 0, NULL, &wm_hints, NULL);
XFree (text_property.value);
return TRUE;
}
guintptr
gst_gl_window_x11_get_gl_context (GstGLWindow * window)
{
GstGLWindowX11Class *window_class;
window_class = GST_GL_WINDOW_X11_GET_CLASS (window);
return window_class->get_gl_context (GST_GL_WINDOW_X11 (window));
}
static void
callback_activate (GstGLWindow * window)
{
GstGLWindowX11Class *window_class;
GstGLWindowX11Private *priv;
GstGLWindowX11 *window_x11;
window_x11 = GST_GL_WINDOW_X11 (window);
window_class = GST_GL_WINDOW_X11_GET_CLASS (window_x11);
priv = window_x11->priv;
priv->activate_result = window_class->activate (window_x11, priv->activate);
}
gboolean
gst_gl_window_x11_activate (GstGLWindow * window, gboolean activate)
{
GstGLWindowX11 *window_x11;
GstGLWindowX11Private *priv;
window_x11 = GST_GL_WINDOW_X11 (window);
priv = window_x11->priv;
priv->activate = activate;
gst_gl_window_x11_send_message (window, GST_GL_WINDOW_CB (callback_activate),
window_x11);
return priv->activate_result;
}
/* Not called by the gl thread */
void
gst_gl_window_x11_set_window_handle (GstGLWindow * window, guintptr id)
{
GstGLWindowX11 *window_x11;
XWindowAttributes attr;
window_x11 = GST_GL_WINDOW_X11 (window);
window_x11->parent_win = (Window) id;
GST_LOG ("set parent window id: %lud", id);
XGetWindowAttributes (window_x11->disp_send, window_x11->parent_win, &attr);
XResizeWindow (window_x11->disp_send, window_x11->internal_win_id, attr.width,
attr.height);
XReparentWindow (window_x11->disp_send, window_x11->internal_win_id,
window_x11->parent_win, 0, 0);
XSync (window_x11->disp_send, FALSE);
}
/* Called in the gl thread */
void
gst_gl_window_x11_draw_unlocked (GstGLWindow * window, guint width,
guint height)
{
GstGLWindowX11 *window_x11;
window_x11 = GST_GL_WINDOW_X11 (window);
if (window_x11->running && window_x11->allow_extra_expose_events) {
XEvent event;
XWindowAttributes attr;
XGetWindowAttributes (window_x11->device, window_x11->internal_win_id,
&attr);
event.xexpose.type = Expose;
event.xexpose.send_event = TRUE;
event.xexpose.display = window_x11->device;
event.xexpose.window = window_x11->internal_win_id;
event.xexpose.x = attr.x;
event.xexpose.y = attr.y;
event.xexpose.width = attr.width;
event.xexpose.height = attr.height;
event.xexpose.count = 0;
XSendEvent (window_x11->device, window_x11->internal_win_id, FALSE,
ExposureMask, &event);
XSync (window_x11->disp_send, FALSE);
}
}
/* Not called by the gl thread */
void
gst_gl_window_x11_draw (GstGLWindow * window, guint width, guint height)
{
GstGLWindowX11 *window_x11;
window_x11 = GST_GL_WINDOW_X11 (window);
if (window_x11->running) {
XEvent event;
XWindowAttributes attr;
XGetWindowAttributes (window_x11->disp_send, window_x11->internal_win_id,
&attr);
if (!window_x11->visible) {
if (!window_x11->parent_win) {
attr.width = width;
attr.height = height;
XResizeWindow (window_x11->disp_send, window_x11->internal_win_id,
attr.width, attr.height);
XSync (window_x11->disp_send, FALSE);
}
XMapWindow (window_x11->disp_send, window_x11->internal_win_id);
window_x11->visible = TRUE;
}
if (window_x11->parent_win) {
XWindowAttributes attr_parent;
XGetWindowAttributes (window_x11->disp_send, window_x11->parent_win,
&attr_parent);
if (attr.width != attr_parent.width || attr.height != attr_parent.height) {
XMoveResizeWindow (window_x11->disp_send, window_x11->internal_win_id,
0, 0, attr_parent.width, attr_parent.height);
XSync (window_x11->disp_send, FALSE);
attr.width = attr_parent.width;
attr.height = attr_parent.height;
GST_LOG ("parent resize: %d, %d",
attr_parent.width, attr_parent.height);
}
}
event.xexpose.type = Expose;
event.xexpose.send_event = TRUE;
event.xexpose.display = window_x11->disp_send;
event.xexpose.window = window_x11->internal_win_id;
event.xexpose.x = attr.x;
event.xexpose.y = attr.y;
event.xexpose.width = attr.width;
event.xexpose.height = attr.height;
event.xexpose.count = 0;
XSendEvent (window_x11->disp_send, window_x11->internal_win_id, FALSE,
ExposureMask, &event);
XSync (window_x11->disp_send, FALSE);
}
}
/* Called in the gl thread */
void
gst_gl_window_x11_run (GstGLWindow * window)
{
GstGLWindowX11 *window_x11;
GstGLWindowX11Class *window_class;
window_x11 = GST_GL_WINDOW_X11 (window);
window_class = GST_GL_WINDOW_X11_GET_CLASS (window_x11);
GST_DEBUG ("begin loop");
while (window_x11->running) {
XEvent event;
XEvent pending_event;
GST_GL_WINDOW_UNLOCK (window);
/* XSendEvent (which are called in other threads) are done from another display structure */
XNextEvent (window_x11->device, &event);
GST_GL_WINDOW_LOCK (window);
// use in generic/cube and other related uses
window_x11->allow_extra_expose_events = XPending (window_x11->device) <= 2;
switch (event.type) {
case ClientMessage:
{
Atom wm_delete =
XInternAtom (window_x11->device, "WM_DELETE_WINDOW", True);
Atom wm_gl = XInternAtom (window_x11->device, "WM_GL_WINDOW", True);
Atom wm_quit_loop =
XInternAtom (window_x11->device, "WM_QUIT_LOOP", True);
if (wm_delete == None)
GST_DEBUG ("Cannot create WM_DELETE_WINDOW");
if (wm_gl == None)
GST_DEBUG ("Cannot create WM_GL_WINDOW");
if (wm_quit_loop == None)
GST_DEBUG ("Cannot create WM_QUIT_LOOP");
/* Message sent with gst_gl_window_send_message */
if (wm_gl != None && event.xclient.message_type == wm_gl) {
if (window_x11->running) {
#if SIZEOF_VOID_P == 8
GstGLWindowCB custom_cb =
(GstGLWindowCB) (((event.xclient.
data.l[0] & 0xffffffff) << 32) | (event.xclient.
data.l[1] & 0xffffffff));
gpointer custom_data =
(gpointer) (((event.xclient.
data.l[2] & 0xffffffff) << 32) | (event.xclient.
data.l[3] & 0xffffffff));
#else
GstGLWindowCB custom_cb = (GstGLWindowCB) event.xclient.data.l[0];
gpointer custom_data = (gpointer) event.xclient.data.l[1];
#endif
if (!custom_cb || !custom_data)
GST_DEBUG ("custom cb not initialized");
custom_cb (custom_data);
}
g_cond_signal (&window_x11->cond_send_message);
}
/* User clicked on the cross */
else if (wm_delete != None
&& (Atom) event.xclient.data.l[0] == wm_delete) {
GST_DEBUG ("Close %lud", (gulong) window_x11->internal_win_id);
if (window->close)
window->close (window->close_data);
}
/* message sent with gst_gl_window_quit_loop */
else if (wm_quit_loop != None
&& event.xclient.message_type == wm_quit_loop) {
#if SIZEOF_VOID_P == 8
GstGLWindowCB destroy_cb =
(GstGLWindowCB) (((event.xclient.
data.l[0] & 0xffffffff) << 32) | (event.xclient.
data.l[1] & 0xffffffff));
gpointer destroy_data =
(gpointer) (((event.xclient.
data.l[2] & 0xffffffff) << 32) | (event.xclient.
data.l[3] & 0xffffffff));
#else
GstGLWindowCB destroy_cb = (GstGLWindowCB) event.xclient.data.l[0];
gpointer destroy_data = (gpointer) event.xclient.data.l[1];
#endif
GST_DEBUG ("Quit loop message %lud",
(gulong) window_x11->internal_win_id);
/* exit loop */
window_x11->running = FALSE;
/* make sure last pendings send message calls are executed */
XFlush (window_x11->device);
while (XCheckTypedEvent (window_x11->device, ClientMessage,
&pending_event)) {
#if SIZEOF_VOID_P == 8
GstGLWindowCB custom_cb =
(GstGLWindowCB) (((event.xclient.
data.l[0] & 0xffffffff) << 32) | (event.xclient.
data.l[1] & 0xffffffff));
gpointer custom_data =
(gpointer) (((event.xclient.
data.l[2] & 0xffffffff) << 32) | (event.xclient.
data.l[3] & 0xffffffff));
#else
GstGLWindowCB custom_cb = (GstGLWindowCB) event.xclient.data.l[0];
gpointer custom_data = (gpointer) event.xclient.data.l[1];
#endif
GST_DEBUG ("execute last pending custom x events");
if (!custom_cb || !custom_data)
GST_DEBUG ("custom cb not initialized");
custom_cb (custom_data);
g_cond_signal (&window_x11->cond_send_message);
}
/* Finally we can destroy opengl ressources (texture/shaders/fbo) */
if (!destroy_cb || !destroy_data)
GST_FIXME ("destroy cb not correctly set");
destroy_cb (destroy_data);
} else
GST_DEBUG ("client message not recognized");
break;
}
case CreateNotify:
case ConfigureNotify:
{
if (window->resize)
window->resize (window->resize_data, event.xconfigure.width,
event.xconfigure.height);
break;
}
case DestroyNotify:
break;
case Expose:
if (window->draw) {
window->draw (window->draw_data);
window_class->swap_buffers (window_x11);
}
break;
case VisibilityNotify:
{
switch (event.xvisibility.state) {
case VisibilityUnobscured:
if (window->draw)
window->draw (window->draw_data);
break;
case VisibilityPartiallyObscured:
if (window->draw)
window->draw (window->draw_data);
break;
case VisibilityFullyObscured:
break;
default:
GST_DEBUG ("unknown xvisibility event: %d",
event.xvisibility.state);
break;
}
break;
}
default:
GST_DEBUG ("unknown XEvent type: %ud", event.type);
break;
} // switch
} // while running
GST_DEBUG ("end loop");
}
/* Not called by the gl thread */
void
gst_gl_window_x11_quit (GstGLWindow * window, GstGLWindowCB callback,
gpointer data)
{
GstGLWindowX11 *window_x11;
window_x11 = GST_GL_WINDOW_X11 (window);
GST_DEBUG ("sending quit, running:%i", window_x11->running);
if (window_x11->running) {
XEvent event;
event.xclient.type = ClientMessage;
event.xclient.send_event = TRUE;
event.xclient.display = window_x11->disp_send;
event.xclient.window = window_x11->internal_win_id;
event.xclient.message_type =
XInternAtom (window_x11->disp_send, "WM_QUIT_LOOP", True);
event.xclient.format = 32;
#if SIZEOF_VOID_P == 8
event.xclient.data.l[0] = (((long) callback) >> 32) & 0xffffffff;
event.xclient.data.l[1] = (((long) callback)) & 0xffffffff;
event.xclient.data.l[2] = (((long) data) >> 32) & 0xffffffff;
event.xclient.data.l[3] = (((long) data)) & 0xffffffff;
#else
event.xclient.data.l[0] = (long) callback;
event.xclient.data.l[1] = (long) data;
#endif
XSendEvent (window_x11->disp_send, window_x11->internal_win_id, FALSE,
NoEventMask, &event);
XSync (window_x11->disp_send, FALSE);
}
}
/* Not called by the gl thread */
void
gst_gl_window_x11_send_message (GstGLWindow * window, GstGLWindowCB callback,
gpointer data)
{
GstGLWindowX11 *window_x11;
window_x11 = GST_GL_WINDOW_X11 (window);
if (window_x11->running) {
XEvent event;
event.xclient.type = ClientMessage;
event.xclient.send_event = TRUE;
event.xclient.display = window_x11->disp_send;
event.xclient.window = window_x11->internal_win_id;
event.xclient.message_type =
XInternAtom (window_x11->disp_send, "WM_GL_WINDOW", True);
event.xclient.format = 32;
#if SIZEOF_VOID_P == 8
event.xclient.data.l[0] = (((long) callback) >> 32) & 0xffffffff;
event.xclient.data.l[1] = (((long) callback)) & 0xffffffff;
event.xclient.data.l[2] = (((long) data) >> 32) & 0xffffffff;
event.xclient.data.l[3] = (((long) data)) & 0xffffffff;
#else
event.xclient.data.l[0] = (long) callback;
event.xclient.data.l[1] = (long) data;
#endif
XSendEvent (window_x11->disp_send, window_x11->internal_win_id, FALSE,
NoEventMask, &event);
XSync (window_x11->disp_send, FALSE);
/* block until opengl calls have been executed in the gl thread */
g_cond_wait (&window_x11->cond_send_message,
GST_GL_WINDOW_GET_LOCK (window));
}
}
static int
error_handler (Display * xdpy, XErrorEvent * error)
{
TrappedErrorCode = error->error_code;
return 0;
}
/**
* gst_gl_window_x11_trap_x_errors:
*
* Traps every X error until gst_gl_window_x11_untrap_x_errors() is called.
*/
void
gst_gl_window_x11_trap_x_errors (void)
{
TrappedErrorCode = 0;
old_error_handler = XSetErrorHandler (error_handler);
}
/**
* gst_gl_window_x11_untrap_x_errors:
*
* Removes the X error trap and returns the current status.
*
* Return value: the trapped error code, or 0 for success
*/
gint
gst_gl_window_x11_untrap_x_errors (void)
{
XSetErrorHandler (old_error_handler);
return TrappedErrorCode;
}