gstreamer/gst-libs/gst/vaapi/gstvaapiwindow_x11.c
2013-05-27 17:20:35 +02:00

545 lines
16 KiB
C

/*
* gstvaapiwindow_x11.c - VA/X11 window abstraction
*
* Copyright (C) 2010-2011 Splitted-Desktop Systems
* Copyright (C) 2012 Intel Corporation
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2.1
* 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA
*/
/**
* SECTION:gstvaapiwindow_x11
* @short_description: VA/X11 window abstraction
*/
#include "sysdeps.h"
#include <string.h>
#include <X11/Xatom.h>
#include "gstvaapicompat.h"
#include "gstvaapiwindow_x11.h"
#include "gstvaapiwindow_x11_priv.h"
#include "gstvaapidisplay_x11.h"
#include "gstvaapidisplay_x11_priv.h"
#include "gstvaapiutils.h"
#include "gstvaapiutils_x11.h"
#define DEBUG 1
#include "gstvaapidebug.h"
#define _NET_WM_STATE_REMOVE 0 /* remove/unset property */
#define _NET_WM_STATE_ADD 1 /* add/set property */
#define _NET_WM_STATE_TOGGLE 2 /* toggle property */
static void
send_wmspec_change_state(GstVaapiWindow *window, Atom state, gboolean add)
{
GstVaapiWindowX11Private * const priv =
GST_VAAPI_WINDOW_X11_GET_PRIVATE(window);
Display * const dpy = GST_VAAPI_OBJECT_XDISPLAY(window);
XClientMessageEvent xclient;
memset(&xclient, 0, sizeof(xclient));
xclient.type = ClientMessage;
xclient.window = GST_VAAPI_OBJECT_ID(window);
xclient.message_type = priv->atom_NET_WM_STATE;
xclient.format = 32;
xclient.data.l[0] = add ? _NET_WM_STATE_ADD : _NET_WM_STATE_REMOVE;
xclient.data.l[1] = state;
xclient.data.l[2] = 0;
xclient.data.l[3] = 0;
xclient.data.l[4] = 0;
XSendEvent(
dpy,
DefaultRootWindow(dpy),
False,
SubstructureRedirectMask|SubstructureNotifyMask,
(XEvent *)&xclient
);
}
static void
wait_event(GstVaapiWindow *window, int type)
{
Display * const dpy = GST_VAAPI_OBJECT_XDISPLAY(window);
const Window xid = GST_VAAPI_OBJECT_ID(window);
XEvent e;
Bool got_event;
for (;;) {
GST_VAAPI_OBJECT_LOCK_DISPLAY(window);
got_event = XCheckTypedWindowEvent(dpy, xid, type, &e);
GST_VAAPI_OBJECT_UNLOCK_DISPLAY(window);
if (got_event)
break;
g_usleep(10);
}
}
static gboolean
timed_wait_event(GstVaapiWindow *window, int type, guint64 end_time, XEvent *e)
{
Display * const dpy = GST_VAAPI_OBJECT_XDISPLAY(window);
const Window xid = GST_VAAPI_OBJECT_ID(window);
XEvent tmp_event;
GTimeVal now;
guint64 now_time;
Bool got_event;
if (!e)
e = &tmp_event;
GST_VAAPI_OBJECT_LOCK_DISPLAY(window);
got_event = XCheckTypedWindowEvent(dpy, xid, type, e);
GST_VAAPI_OBJECT_UNLOCK_DISPLAY(window);
if (got_event)
return TRUE;
do {
g_usleep(10);
GST_VAAPI_OBJECT_LOCK_DISPLAY(window);
got_event = XCheckTypedWindowEvent(dpy, xid, type, e);
GST_VAAPI_OBJECT_UNLOCK_DISPLAY(window);
if (got_event)
return TRUE;
g_get_current_time(&now);
now_time = (guint64)now.tv_sec * 1000000 + now.tv_usec;
} while (now_time < end_time);
return FALSE;
}
static gboolean
gst_vaapi_window_x11_show(GstVaapiWindow *window)
{
GstVaapiWindowX11Private * const priv =
GST_VAAPI_WINDOW_X11_GET_PRIVATE(window);
Display * const dpy = GST_VAAPI_OBJECT_XDISPLAY(window);
const Window xid = GST_VAAPI_OBJECT_ID(window);
XWindowAttributes wattr;
gboolean has_errors;
if (priv->is_mapped)
return TRUE;
GST_VAAPI_OBJECT_LOCK_DISPLAY(window);
x11_trap_errors();
if (window->use_foreign_window) {
XGetWindowAttributes(dpy, xid, &wattr);
if (!(wattr.your_event_mask & StructureNotifyMask))
XSelectInput(dpy, xid, StructureNotifyMask);
}
XMapWindow(dpy, xid);
has_errors = x11_untrap_errors() != 0;
GST_VAAPI_OBJECT_UNLOCK_DISPLAY(window);
if (!has_errors) {
wait_event(window, MapNotify);
if (window->use_foreign_window &&
!(wattr.your_event_mask & StructureNotifyMask)) {
GST_VAAPI_OBJECT_LOCK_DISPLAY(window);
x11_trap_errors();
XSelectInput(dpy, xid, wattr.your_event_mask);
has_errors = x11_untrap_errors() != 0;
GST_VAAPI_OBJECT_UNLOCK_DISPLAY(window);
}
priv->is_mapped = TRUE;
if (priv->fullscreen_on_map)
gst_vaapi_window_set_fullscreen(window, TRUE);
}
return !has_errors;
}
static gboolean
gst_vaapi_window_x11_hide(GstVaapiWindow *window)
{
GstVaapiWindowX11Private * const priv =
GST_VAAPI_WINDOW_X11_GET_PRIVATE(window);
Display * const dpy = GST_VAAPI_OBJECT_XDISPLAY(window);
const Window xid = GST_VAAPI_OBJECT_ID(window);
XWindowAttributes wattr;
gboolean has_errors;
if (!priv->is_mapped)
return TRUE;
GST_VAAPI_OBJECT_LOCK_DISPLAY(window);
x11_trap_errors();
if (window->use_foreign_window) {
XGetWindowAttributes(dpy, xid, &wattr);
if (!(wattr.your_event_mask & StructureNotifyMask))
XSelectInput(dpy, xid, StructureNotifyMask);
}
XUnmapWindow(dpy, xid);
has_errors = x11_untrap_errors() != 0;
GST_VAAPI_OBJECT_UNLOCK_DISPLAY(window);
if (!has_errors) {
wait_event(window, UnmapNotify);
if (window->use_foreign_window &&
!(wattr.your_event_mask & StructureNotifyMask)) {
GST_VAAPI_OBJECT_LOCK_DISPLAY(window);
x11_trap_errors();
XSelectInput(dpy, xid, wattr.your_event_mask);
has_errors = x11_untrap_errors() != 0;
GST_VAAPI_OBJECT_UNLOCK_DISPLAY(window);
}
priv->is_mapped = FALSE;
}
return !has_errors;
}
static gboolean
gst_vaapi_window_x11_create(GstVaapiWindow *window, guint *width, guint *height)
{
GstVaapiWindowX11Private * const priv =
GST_VAAPI_WINDOW_X11_GET_PRIVATE(window);
Display * const dpy = GST_VAAPI_OBJECT_XDISPLAY(window);
Window xid = GST_VAAPI_OBJECT_ID(window);
Visual *vis = NULL;
Colormap cmap = None;
const GstVaapiWindowX11Class *klass;
XWindowAttributes wattr;
Atom atoms[2];
gboolean ok;
static const char *atom_names[2] = {
"_NET_WM_STATE",
"_NET_WM_STATE_FULLSCREEN",
};
if (window->use_foreign_window && xid) {
GST_VAAPI_OBJECT_LOCK_DISPLAY(window);
XGetWindowAttributes(dpy, xid, &wattr);
priv->is_mapped = wattr.map_state == IsViewable;
ok = x11_get_geometry(dpy, xid, NULL, NULL, width, height);
GST_VAAPI_OBJECT_UNLOCK_DISPLAY(window);
return ok;
}
klass = GST_VAAPI_WINDOW_X11_GET_CLASS(window);
if (klass) {
if (klass->get_visual)
vis = klass->get_visual(window);
if (klass->get_colormap)
cmap = klass->get_colormap(window);
}
GST_VAAPI_OBJECT_LOCK_DISPLAY(window);
XInternAtoms(
dpy,
(char **)atom_names, G_N_ELEMENTS(atom_names),
False,
atoms
);
priv->atom_NET_WM_STATE = atoms[0];
priv->atom_NET_WM_STATE_FULLSCREEN = atoms[1];
xid = x11_create_window(dpy, *width, *height, vis, cmap);
if (xid)
XRaiseWindow(dpy, xid);
GST_VAAPI_OBJECT_UNLOCK_DISPLAY(window);
GST_DEBUG("xid %" GST_VAAPI_ID_FORMAT, GST_VAAPI_ID_ARGS(xid));
GST_VAAPI_OBJECT_ID(window) = xid;
return xid != None;
}
static void
gst_vaapi_window_x11_destroy(GstVaapiWindow *window)
{
Display * const dpy = GST_VAAPI_OBJECT_XDISPLAY(window);
const Window xid = GST_VAAPI_OBJECT_ID(window);
if (xid) {
if (!window->use_foreign_window) {
GST_VAAPI_OBJECT_LOCK_DISPLAY(window);
XDestroyWindow(dpy, xid);
GST_VAAPI_OBJECT_UNLOCK_DISPLAY(window);
}
GST_VAAPI_OBJECT_ID(window) = None;
}
}
static gboolean
gst_vaapi_window_x11_get_geometry(
GstVaapiWindow *window,
gint *px,
gint *py,
guint *pwidth,
guint *pheight)
{
Display * const dpy = GST_VAAPI_OBJECT_XDISPLAY(window);
const Window xid = GST_VAAPI_OBJECT_ID(window);
return x11_get_geometry(dpy, xid, px, py, pwidth, pheight);
}
static gboolean
gst_vaapi_window_x11_set_fullscreen(GstVaapiWindow *window, gboolean fullscreen)
{
GstVaapiWindowX11Private * const priv =
GST_VAAPI_WINDOW_X11_GET_PRIVATE(window);
Display * const dpy = GST_VAAPI_OBJECT_XDISPLAY(window);
const Window xid = GST_VAAPI_OBJECT_ID(window);
XEvent e;
guint width, height;
gboolean has_errors;
GTimeVal now;
guint64 end_time;
GST_VAAPI_OBJECT_LOCK_DISPLAY(window);
x11_trap_errors();
if (fullscreen) {
if (!priv->is_mapped) {
priv->fullscreen_on_map = TRUE;
XChangeProperty(
dpy,
xid,
priv->atom_NET_WM_STATE, XA_ATOM, 32,
PropModeReplace,
(unsigned char *)&priv->atom_NET_WM_STATE_FULLSCREEN, 1
);
}
else {
send_wmspec_change_state(
window,
priv->atom_NET_WM_STATE_FULLSCREEN,
TRUE
);
}
}
else {
if (!priv->is_mapped) {
priv->fullscreen_on_map = FALSE;
XDeleteProperty(
dpy,
xid,
priv->atom_NET_WM_STATE
);
}
else {
send_wmspec_change_state(
window,
priv->atom_NET_WM_STATE_FULLSCREEN,
FALSE
);
}
}
XSync(dpy, False);
has_errors = x11_untrap_errors() != 0;
GST_VAAPI_OBJECT_UNLOCK_DISPLAY(window);
if (has_errors)
return FALSE;
/* Try to wait for the completion of the fullscreen mode switch */
if (!window->use_foreign_window && priv->is_mapped) {
const guint DELAY = 100000; /* 100 ms */
g_get_current_time(&now);
end_time = DELAY + ((guint64)now.tv_sec * 1000000 + now.tv_usec);
while (timed_wait_event(window, ConfigureNotify, end_time, &e)) {
if (fullscreen) {
gst_vaapi_display_get_size(
GST_VAAPI_OBJECT_DISPLAY(window),
&width,
&height
);
if (e.xconfigure.width == width && e.xconfigure.height == height)
return TRUE;
}
else {
gst_vaapi_window_get_size(window, &width, &height);
if (e.xconfigure.width != width || e.xconfigure.height != height)
return TRUE;
}
}
}
return FALSE;
}
static gboolean
gst_vaapi_window_x11_resize(GstVaapiWindow *window, guint width, guint height)
{
gboolean has_errors;
if (!GST_VAAPI_OBJECT_ID(window))
return FALSE;
GST_VAAPI_OBJECT_LOCK_DISPLAY(window);
x11_trap_errors();
XResizeWindow(
GST_VAAPI_OBJECT_XDISPLAY(window),
GST_VAAPI_OBJECT_ID(window),
width,
height
);
has_errors = x11_untrap_errors() != 0;
GST_VAAPI_OBJECT_UNLOCK_DISPLAY(window);
return !has_errors;
}
static gboolean
gst_vaapi_window_x11_render(
GstVaapiWindow *window,
GstVaapiSurface *surface,
const GstVaapiRectangle *src_rect,
const GstVaapiRectangle *dst_rect,
guint flags
)
{
VASurfaceID surface_id;
VAStatus status;
surface_id = GST_VAAPI_OBJECT_ID(surface);
if (surface_id == VA_INVALID_ID)
return FALSE;
GST_VAAPI_OBJECT_LOCK_DISPLAY(window);
status = vaPutSurface(
GST_VAAPI_OBJECT_VADISPLAY(window),
surface_id,
GST_VAAPI_OBJECT_ID(window),
src_rect->x,
src_rect->y,
src_rect->width,
src_rect->height,
dst_rect->x,
dst_rect->y,
dst_rect->width,
dst_rect->height,
NULL, 0,
from_GstVaapiSurfaceRenderFlags(flags)
);
GST_VAAPI_OBJECT_UNLOCK_DISPLAY(window);
if (!vaapi_check_status(status, "vaPutSurface()"))
return FALSE;
return TRUE;
}
void
gst_vaapi_window_x11_class_init(GstVaapiWindowX11Class *klass)
{
GstVaapiObjectClass * const object_class =
GST_VAAPI_OBJECT_CLASS(klass);
GstVaapiWindowClass * const window_class =
GST_VAAPI_WINDOW_CLASS(klass);
object_class->finalize = (GstVaapiObjectFinalizeFunc)
gst_vaapi_window_x11_destroy;
window_class->create = gst_vaapi_window_x11_create;
window_class->show = gst_vaapi_window_x11_show;
window_class->hide = gst_vaapi_window_x11_hide;
window_class->get_geometry = gst_vaapi_window_x11_get_geometry;
window_class->set_fullscreen = gst_vaapi_window_x11_set_fullscreen;
window_class->resize = gst_vaapi_window_x11_resize;
window_class->render = gst_vaapi_window_x11_render;
}
#define gst_vaapi_window_x11_finalize \
gst_vaapi_window_x11_destroy
GST_VAAPI_OBJECT_DEFINE_CLASS_WITH_CODE(
GstVaapiWindowX11,
gst_vaapi_window_x11,
gst_vaapi_window_x11_class_init(&g_class))
/**
* gst_vaapi_window_x11_new:
* @display: a #GstVaapiDisplay
* @width: the requested window width, in pixels
* @height: the requested windo height, in pixels
*
* Creates a window with the specified @width and @height. The window
* will be attached to the @display and remains invisible to the user
* until gst_vaapi_window_show() is called.
*
* Return value: the newly allocated #GstVaapiWindow object
*/
GstVaapiWindow *
gst_vaapi_window_x11_new(GstVaapiDisplay *display, guint width, guint height)
{
GST_DEBUG("new window, size %ux%u", width, height);
g_return_val_if_fail(GST_VAAPI_IS_DISPLAY_X11(display), NULL);
return gst_vaapi_window_new(GST_VAAPI_WINDOW_CLASS(
gst_vaapi_window_x11_class()), display, width, height);
}
/**
* gst_vaapi_window_x11_new_with_xid:
* @display: a #GstVaapiDisplay
* @xid: an X11 #Window id
*
* Creates a #GstVaapiWindow using the X11 #Window @xid. The caller
* still owns the window and must call XDestroyWindow() when all
* #GstVaapiWindow references are released. Doing so too early can
* yield undefined behaviour.
*
* Return value: the newly allocated #GstVaapiWindow object
*/
GstVaapiWindow *
gst_vaapi_window_x11_new_with_xid(GstVaapiDisplay *display, Window xid)
{
GST_DEBUG("new window from xid 0x%08x", xid);
g_return_val_if_fail(GST_VAAPI_IS_DISPLAY_X11(display), NULL);
g_return_val_if_fail(xid != None, NULL);
return gst_vaapi_window_new_from_native(GST_VAAPI_WINDOW_CLASS(
gst_vaapi_window_x11_class()), display, GINT_TO_POINTER(xid));
}
/**
* gst_vaapi_window_x11_get_xid:
* @window: a #GstVaapiWindowX11
*
* Returns the underlying X11 #Window that was created by
* gst_vaapi_window_x11_new() or that was bound with
* gst_vaapi_window_x11_new_with_xid().
*
* Return value: the underlying X11 #Window bound to @window.
*/
Window
gst_vaapi_window_x11_get_xid(GstVaapiWindowX11 *window)
{
g_return_val_if_fail(window != NULL, None);
return GST_VAAPI_OBJECT_ID(window);
}
/**
* gst_vaapi_window_x11_is_foreign_xid:
* @window: a #GstVaapiWindowX11
*
* Checks whether the @window XID was created by gst_vaapi_window_x11_new() or bound with gst_vaapi_window_x11_new_with_xid().
*
* Return value: %TRUE if the underlying X window is owned by the
* caller (foreign window)
*/
gboolean
gst_vaapi_window_x11_is_foreign_xid(GstVaapiWindowX11 *window)
{
g_return_val_if_fail(window != NULL, FALSE);
return GST_VAAPI_WINDOW(window)->use_foreign_window;
}