gstreamer/gst-libs/gst/vulkan/xcb/gstvkwindow_xcb.c

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/*
* GStreamer
* Copyright (C) 2015 Matthew Waters <matthew@centricular.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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gst/gst.h>
#include <locale.h>
#include "gstvkwindow_xcb.h"
#include "gstvkdisplay_xcb.h"
#include <xkbcommon/xkbcommon.h>
#include <xkbcommon/xkbcommon-x11.h>
#define GET_PRIV(o) gst_vulkan_window_xcb_get_instance_private (o)
#define GST_CAT_DEFAULT gst_vulkan_window_xcb_debug
GST_DEBUG_CATEGORY_STATIC (GST_CAT_DEFAULT);
static void
_init_debug (void)
{
static volatile gsize _init = 0;
if (g_once_init_enter (&_init)) {
GST_DEBUG_CATEGORY_INIT (GST_CAT_DEFAULT, "vulkanwindowxcb", 0,
"Vulkan XCB Window");
g_once_init_leave (&_init, 1);
}
}
enum
{
PROP_0,
};
struct _GstVulkanWindowXCBPrivate
{
gboolean activate;
gboolean activate_result;
gint preferred_width;
gint preferred_height;
xcb_intern_atom_reply_t *atom_wm_delete_window;
gboolean handle_events;
guint8 first_xkb_event;
gint32 kbd_device_id;
struct xkb_context *xkb_ctx;
struct xkb_keymap *xkb_keymap;
struct xkb_state *xkb_state;
};
#define gst_vulkan_window_xcb_parent_class parent_class
G_DEFINE_TYPE_WITH_CODE (GstVulkanWindowXCB, gst_vulkan_window_xcb,
GST_TYPE_VULKAN_WINDOW, G_ADD_PRIVATE (GstVulkanWindowXCB) _init_debug ());
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static VkSurfaceKHR gst_vulkan_window_xcb_get_surface (GstVulkanWindow * window,
GError ** error);
static gboolean gst_vulkan_window_xcb_get_presentation_support (GstVulkanWindow
* window, GstVulkanDevice * device, guint32 queue_family_idx);
static gboolean gst_vulkan_window_xcb_open (GstVulkanWindow * window,
GError ** error);
static void gst_vulkan_window_xcb_close (GstVulkanWindow * window);
static void gst_vulkan_window_xcb_handle_events (GstVulkanWindow * window,
gboolean handle_events);
static void
gst_vulkan_window_xcb_finalize (GObject * object)
{
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gst_vulkan_window_xcb_class_init (GstVulkanWindowXCBClass * klass)
{
GObjectClass *obj_class = G_OBJECT_CLASS (klass);
GstVulkanWindowClass *window_class = (GstVulkanWindowClass *) klass;
obj_class->finalize = gst_vulkan_window_xcb_finalize;
window_class->open = GST_DEBUG_FUNCPTR (gst_vulkan_window_xcb_open);
window_class->close = GST_DEBUG_FUNCPTR (gst_vulkan_window_xcb_close);
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window_class->get_surface = gst_vulkan_window_xcb_get_surface;
window_class->handle_events = gst_vulkan_window_xcb_handle_events;
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window_class->get_presentation_support =
gst_vulkan_window_xcb_get_presentation_support;
}
static void
gst_vulkan_window_xcb_init (GstVulkanWindowXCB * window)
{
GstVulkanWindowXCBPrivate *priv = GET_PRIV (window);
priv->handle_events = TRUE;
}
/* Must be called in the gl thread */
GstVulkanWindowXCB *
gst_vulkan_window_xcb_new (GstVulkanDisplay * display)
{
GstVulkanWindowXCB *window;
_init_debug ();
if ((gst_vulkan_display_get_handle_type (display) &
GST_VULKAN_DISPLAY_TYPE_XCB)
== GST_VULKAN_DISPLAY_TYPE_NONE) {
GST_INFO ("Wrong display type %u for this window type %u", display->type,
GST_VULKAN_DISPLAY_TYPE_XCB);
return NULL;
}
window = g_object_new (GST_TYPE_VULKAN_WINDOW_XCB, NULL);
gst_object_ref_sink (window);
return window;
}
static void
gst_vulkan_window_xcb_show (GstVulkanWindow * window)
{
GstVulkanWindowXCB *window_xcb = GST_VULKAN_WINDOW_XCB (window);
GstVulkanDisplayXCB *display_xcb = GST_VULKAN_DISPLAY_XCB (window->display);
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xcb_connection_t *connection =
GST_VULKAN_DISPLAY_XCB_CONNECTION (display_xcb);
if (!window_xcb->visible) {
xcb_map_window (connection, window_xcb->win_id);
xcb_flush (connection);
window_xcb->visible = TRUE;
}
}
static void
gst_vulkan_window_xcb_hide (GstVulkanWindow * window)
{
GstVulkanWindowXCB *window_xcb = GST_VULKAN_WINDOW_XCB (window);
GstVulkanDisplayXCB *display_xcb = GST_VULKAN_DISPLAY_XCB (window->display);
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xcb_connection_t *connection =
GST_VULKAN_DISPLAY_XCB_CONNECTION (display_xcb);
if (window_xcb->visible) {
xcb_unmap_window (connection, window_xcb->win_id);
window_xcb->visible = FALSE;
}
}
static gboolean
init_keyboard (GstVulkanWindowXCB * window_xcb)
{
GstVulkanWindowXCBPrivate *priv = GET_PRIV (window_xcb);
GstVulkanWindow *window = GST_VULKAN_WINDOW (window_xcb);
GstVulkanDisplayXCB *display_xcb = GST_VULKAN_DISPLAY_XCB (window->display);
xcb_connection_t *connection =
GST_VULKAN_DISPLAY_XCB_CONNECTION (display_xcb);
int ret;
ret = xkb_x11_setup_xkb_extension (connection,
XKB_X11_MIN_MAJOR_XKB_VERSION,
XKB_X11_MIN_MINOR_XKB_VERSION,
XKB_X11_SETUP_XKB_EXTENSION_NO_FLAGS,
NULL, NULL, &priv->first_xkb_event, NULL);
if (!ret) {
GST_ERROR_OBJECT (window_xcb, "Couldn't setup XKB extension\n");
return FALSE;;
}
priv->xkb_ctx = xkb_context_new (0);
if (!priv->xkb_ctx)
return FALSE;
priv->kbd_device_id = xkb_x11_get_core_keyboard_device_id (connection);
priv->xkb_keymap = xkb_x11_keymap_new_from_device (priv->xkb_ctx,
connection, priv->kbd_device_id, XKB_KEYMAP_COMPILE_NO_FLAGS);
if (!priv->xkb_keymap)
return FALSE;
priv->xkb_state = xkb_x11_state_new_from_device (priv->xkb_keymap,
connection, priv->kbd_device_id);
if (!priv->xkb_state)
return FALSE;
return TRUE;
}
gboolean
gst_vulkan_window_xcb_create_window (GstVulkanWindowXCB * window_xcb)
{
GstVulkanWindowXCBPrivate *priv = GET_PRIV (window_xcb);
GstVulkanDisplayXCB *display_xcb;
xcb_connection_t *connection;
xcb_screen_t *screen;
xcb_window_t root_window;
uint32_t value_mask, value_list[32];
xcb_intern_atom_cookie_t cookie, cookie2;
xcb_intern_atom_reply_t *reply, *reply2;
// const gchar *title = "OpenGL renderer";
gint x = 0, y = 0, width = 320, height = 240;
display_xcb =
GST_VULKAN_DISPLAY_XCB (GST_VULKAN_WINDOW (window_xcb)->display);
connection = GST_VULKAN_DISPLAY_XCB_CONNECTION (display_xcb);
root_window = GST_VULKAN_DISPLAY_XCB_ROOT_WINDOW (display_xcb);
screen = GST_VULKAN_DISPLAY_XCB_SCREEN (display_xcb);
window_xcb->win_id = xcb_generate_id (connection);
value_mask = XCB_CW_BACK_PIXEL | XCB_CW_EVENT_MASK;
value_list[0] = screen->black_pixel;
value_list[1] =
XCB_EVENT_MASK_KEY_RELEASE | XCB_EVENT_MASK_EXPOSURE |
XCB_EVENT_MASK_STRUCTURE_NOTIFY;
xcb_create_window (connection, XCB_COPY_FROM_PARENT, window_xcb->win_id,
root_window, x, y, width, height, 0, XCB_WINDOW_CLASS_INPUT_OUTPUT,
screen->root_visual, value_mask, value_list);
gst_vulkan_window_xcb_handle_events (GST_VULKAN_WINDOW (window_xcb),
priv->handle_events);
GST_LOG_OBJECT (window_xcb, "vulkan window id: %p",
(gpointer) (guintptr) window_xcb->win_id);
GST_LOG_OBJECT (window_xcb, "vulkan window props: x:%d y:%d", x, y);
/* Magic code that will send notification when window is destroyed */
cookie = xcb_intern_atom (connection, 1, 12, "WM_PROTOCOLS");
reply = xcb_intern_atom_reply (connection, cookie, 0);
cookie2 = xcb_intern_atom (connection, 0, 16, "WM_DELETE_WINDOW");
reply2 = xcb_intern_atom_reply (connection, cookie2, 0);
xcb_change_property (connection, XCB_PROP_MODE_REPLACE, window_xcb->win_id,
reply->atom, 4, 32, 1, &reply2->atom);
g_free (reply);
g_free (reply2);
init_keyboard (window_xcb);
gst_vulkan_window_xcb_show (GST_VULKAN_WINDOW (window_xcb));
return TRUE;
}
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static VkSurfaceKHR
gst_vulkan_window_xcb_get_surface (GstVulkanWindow * window, GError ** error)
{
GstVulkanWindowXCB *window_xcb = GST_VULKAN_WINDOW_XCB (window);
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VkXcbSurfaceCreateInfoKHR info = { 0, };
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VkSurfaceKHR ret;
VkResult err;
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info.sType = VK_STRUCTURE_TYPE_XCB_SURFACE_CREATE_INFO_KHR;
info.pNext = NULL;
info.flags = 0;
info.connection = GST_VULKAN_DISPLAY_XCB_CONNECTION (window->display);
info.window = GST_VULKAN_WINDOW_XCB (window)->win_id;
if (!window_xcb->CreateXcbSurface)
window_xcb->CreateXcbSurface =
gst_vulkan_instance_get_proc_address (window->display->instance,
"vkCreateXcbSurfaceKHR");
if (!window_xcb->CreateXcbSurface) {
g_set_error_literal (error, GST_VULKAN_ERROR, VK_ERROR_FEATURE_NOT_PRESENT,
"Could not retrieve \"vkCreateXcbSurfaceKHR\" function pointer");
return NULL;
}
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err =
window_xcb->CreateXcbSurface (window->display->instance->instance, &info,
NULL, &ret);
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if (gst_vulkan_error_to_g_error (err, error, "vkCreateXcbSurfaceKHR") < 0)
return NULL;
return ret;
}
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static gboolean
gst_vulkan_window_xcb_get_presentation_support (GstVulkanWindow * window,
GstVulkanDevice * device, guint32 queue_family_idx)
{
GstVulkanWindowXCB *window_xcb = GST_VULKAN_WINDOW_XCB (window);
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VkPhysicalDevice gpu;
xcb_screen_t *screen;
screen = GST_VULKAN_DISPLAY_XCB_SCREEN (window->display);
if (!window_xcb->GetPhysicalDeviceXcbPresentationSupport)
window_xcb->GetPhysicalDeviceXcbPresentationSupport =
gst_vulkan_instance_get_proc_address (window->display->instance,
"vkGetPhysicalDeviceXcbPresentationSupportKHR");
if (!window_xcb->GetPhysicalDeviceXcbPresentationSupport) {
GST_WARNING_OBJECT (window, "Could not retrieve "
"\"vkGetPhysicalDeviceXcbPresentationSupportKHR\" " "function pointer");
return FALSE;
}
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gpu = gst_vulkan_device_get_physical_device (device);
if (window_xcb->GetPhysicalDeviceXcbPresentationSupport (gpu,
queue_family_idx, GST_VULKAN_DISPLAY_XCB_CONNECTION (window->display),
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screen->root_visual))
return TRUE;
return FALSE;
}
static gboolean
gst_vulkan_window_xcb_open (GstVulkanWindow * window, GError ** error)
{
GstVulkanWindowXCB *window_xcb = GST_VULKAN_WINDOW_XCB (window);
GstVulkanDisplayXCB *display_xcb;
xcb_connection_t *connection;
if (!GST_IS_VULKAN_DISPLAY_XCB (window->display)) {
g_set_error (error, GST_VULKAN_WINDOW_ERROR,
GST_VULKAN_WINDOW_ERROR_RESOURCE_UNAVAILABLE,
"Cannot create an XCB window from a non-XCB display");
goto failure;
}
display_xcb = GST_VULKAN_DISPLAY_XCB (window->display);
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connection = GST_VULKAN_DISPLAY_XCB_CONNECTION (display_xcb);
if (connection == NULL) {
g_set_error (error, GST_VULKAN_WINDOW_ERROR,
GST_VULKAN_WINDOW_ERROR_RESOURCE_UNAVAILABLE,
"Failed to connect to X display server with XCB");
goto failure;
}
if (!GST_VULKAN_WINDOW_CLASS (parent_class)->open (window, error))
return FALSE;
return gst_vulkan_window_xcb_create_window (window_xcb);
failure:
return FALSE;
}
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static void
gst_vulkan_window_xcb_close (GstVulkanWindow * window)
{
GstVulkanWindowXCB *window_xcb = GST_VULKAN_WINDOW_XCB (window);
GstVulkanWindowXCBPrivate *priv = GET_PRIV (window_xcb);
GstVulkanDisplayXCB *display_xcb = (GstVulkanDisplayXCB *) window->display;
xcb_connection_t *connection =
GST_VULKAN_DISPLAY_XCB_CONNECTION (display_xcb);
if (connection) {
gst_vulkan_window_xcb_hide (window);
g_free (priv->atom_wm_delete_window);
priv->atom_wm_delete_window = NULL;
GST_DEBUG ("display receiver closed");
}
if (priv->xkb_state)
xkb_state_unref (priv->xkb_state);
priv->xkb_state = NULL;
if (priv->xkb_keymap)
xkb_keymap_unref (priv->xkb_keymap);
priv->xkb_keymap = NULL;
if (priv->xkb_ctx)
xkb_context_unref (priv->xkb_ctx);
priv->xkb_ctx = NULL;
GST_VULKAN_WINDOW_CLASS (parent_class)->close (window);
}
G_GNUC_INTERNAL
gboolean
gst_vulkan_window_xcb_handle_event (GstVulkanWindowXCB * window_xcb,
xcb_generic_event_t * event);
gboolean
gst_vulkan_window_xcb_handle_event (GstVulkanWindowXCB * window_xcb,
xcb_generic_event_t * event)
{
GstVulkanWindowXCBPrivate *priv = GET_PRIV (window_xcb);
GstVulkanDisplayXCB *display_xcb =
GST_VULKAN_DISPLAY_XCB (window_xcb->parent.display);
xcb_connection_t *connection =
GST_VULKAN_DISPLAY_XCB_CONNECTION (display_xcb);
uint8_t event_code = event->response_type & 0x7f;
switch (event_code) {
case XCB_CLIENT_MESSAGE:{
xcb_client_message_event_t *client_event;
xcb_intern_atom_cookie_t cookie;
xcb_intern_atom_reply_t *reply;
client_event = (xcb_client_message_event_t *) event;
cookie = xcb_intern_atom (connection, 0, 16, "WM_DELETE_WINDOW");
reply = xcb_intern_atom_reply (connection, cookie, 0);
if (client_event->data.data32[0] == reply->atom) {
GST_INFO_OBJECT (window_xcb, "Close requested");
gst_vulkan_window_close (GST_VULKAN_WINDOW (window_xcb));
gst_vulkan_display_remove_window (GST_VULKAN_DISPLAY (display_xcb),
GST_VULKAN_WINDOW (window_xcb));
}
g_free (reply);
break;
}
case XCB_CONFIGURE_NOTIFY:{
xcb_configure_notify_event_t *configure_event;
configure_event = (xcb_configure_notify_event_t *) event;
gst_vulkan_window_resize (GST_VULKAN_WINDOW (window_xcb),
configure_event->width, configure_event->height);
break;
}
case XCB_EXPOSE:{
xcb_expose_event_t *expose_event = (xcb_expose_event_t *) event;
/* non-zero means that other Expose follows
* so just wait for the last one
* in theory we should not receive non-zero because
* we have no sub areas here but just in case */
if (expose_event->count != 0)
break;
gst_vulkan_window_redraw (GST_VULKAN_WINDOW (window_xcb));
break;
}
case XCB_KEY_PRESS:
case XCB_KEY_RELEASE:{
xcb_key_press_event_t *kp = (xcb_key_press_event_t *) event;
int nsyms;
const xkb_keysym_t *syms;
const char *event_type_str;
if (!priv->xkb_state)
/* no xkb support. What year is this?! */
break;
nsyms = xkb_state_key_get_syms (priv->xkb_state, kp->detail, &syms);
if (event_code == XCB_KEY_PRESS)
event_type_str = "key-press";
else
event_type_str = "key-release";
/* TODO: compose states, keymap changes */
if (nsyms <= 0)
break;
for (int i = 0; i < nsyms; i++) {
char s[64];
xkb_keysym_get_name (syms[i], s, sizeof (s));
gst_vulkan_window_send_key_event (GST_VULKAN_WINDOW (window_xcb),
event_type_str, s);
}
break;
}
case XCB_BUTTON_PRESS:
case XCB_BUTTON_RELEASE:{
xcb_button_press_event_t *bp = (xcb_button_press_event_t *) event;
const gchar *event_type_str;
if (event_code == XCB_BUTTON_PRESS)
event_type_str = "mouse-button-press";
else
event_type_str = "mouse-button-release";
gst_vulkan_window_send_mouse_event (GST_VULKAN_WINDOW (window_xcb),
event_type_str, bp->detail, (double) bp->event_x,
(double) bp->event_y);
break;
}
case XCB_MOTION_NOTIFY:{
xcb_motion_notify_event_t *motion = (xcb_motion_notify_event_t *) event;
gst_vulkan_window_send_mouse_event (GST_VULKAN_WINDOW (window_xcb),
"mouse-move", 0, (double) motion->event_x, (double) motion->event_y);
break;
}
default:
GST_DEBUG ("unhandled XCB type: %u", event_code);
break;
}
return TRUE;
}
static void
gst_vulkan_window_xcb_handle_events (GstVulkanWindow * window,
gboolean handle_events)
{
GstVulkanDisplayXCB *display_xcb = GST_VULKAN_DISPLAY_XCB (window->display);
xcb_connection_t *connection =
GST_VULKAN_DISPLAY_XCB_CONNECTION (display_xcb);
GstVulkanWindowXCB *window_xcb = GST_VULKAN_WINDOW_XCB (window);
GstVulkanWindowXCBPrivate *priv = GET_PRIV (window_xcb);
priv->handle_events = handle_events;
if (window_xcb->win_id) {
guint32 events;
events = XCB_EVENT_MASK_STRUCTURE_NOTIFY | XCB_EVENT_MASK_EXPOSURE
| XCB_EVENT_MASK_VISIBILITY_CHANGE;
if (handle_events) {
events |= XCB_EVENT_MASK_STRUCTURE_NOTIFY | XCB_EVENT_MASK_EXPOSURE
| XCB_EVENT_MASK_VISIBILITY_CHANGE | XCB_EVENT_MASK_POINTER_MOTION
| XCB_EVENT_MASK_BUTTON_PRESS | XCB_EVENT_MASK_BUTTON_RELEASE
| XCB_EVENT_MASK_KEY_PRESS | XCB_EVENT_MASK_KEY_RELEASE;
}
xcb_change_window_attributes (connection,
window_xcb->win_id, XCB_CW_EVENT_MASK, &events);
}
}