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

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/*
* 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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdint.h>
#include <stdlib.h>
#include <gst/vulkan/gstvkapi.h>
#include <gst/vulkan/xcb/gstvkdisplay_xcb.h>
#include "gstvkwindow_xcb.h"
#include "xcb_event_source.h"
static gint
_compare_xcb_window (GWeakRef * ref, xcb_window_t * window_id)
{
GstVulkanWindowXCB *window_xcb;
gint ret;
window_xcb = g_weak_ref_get (ref);
if (!window_xcb)
return -1;
g_return_val_if_fail (GST_IS_VULKAN_WINDOW_XCB (window_xcb), -1);
g_return_val_if_fail (window_id != 0, -1);
ret = window_xcb->win_id - *window_id;
gst_object_unref (window_xcb);
return ret;
}
static GstVulkanWindowXCB *
_find_window_from_xcb_window (GstVulkanDisplayXCB * display_xcb,
xcb_window_t window_id)
{
GstVulkanDisplay *display = GST_VULKAN_DISPLAY (display_xcb);
GstVulkanWindowXCB *ret = NULL;
GList *l;
if (!window_id)
return NULL;
GST_OBJECT_LOCK (display);
l = g_list_find_custom (display->windows, &window_id,
(GCompareFunc) _compare_xcb_window);
if (l) {
ret = g_weak_ref_get (l->data);
}
GST_OBJECT_UNLOCK (display);
return ret;
}
static gboolean
_xcb_handle_event (GstVulkanDisplayXCB * display_xcb)
{
xcb_connection_t *connection =
GST_VULKAN_DISPLAY_XCB_CONNECTION (display_xcb);
xcb_generic_event_t *event;
gboolean ret = TRUE;
while ((event = xcb_poll_for_event (connection))) {
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) {
GstVulkanWindowXCB *window_xcb;
window_xcb =
_find_window_from_xcb_window (display_xcb, client_event->window);
if (window_xcb) {
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));
gst_object_unref (window_xcb);
}
}
g_free (reply);
break;
}
case XCB_CONFIGURE_NOTIFY:{
xcb_configure_notify_event_t *configure_event;
GstVulkanWindowXCB *window_xcb;
configure_event = (xcb_configure_notify_event_t *) event;
window_xcb =
_find_window_from_xcb_window (display_xcb, configure_event->window);
if (window_xcb) {
gst_vulkan_window_resize (GST_VULKAN_WINDOW (window_xcb),
configure_event->width, configure_event->height);
gst_object_unref (window_xcb);
}
break;
}
case XCB_EXPOSE:{
xcb_expose_event_t *expose_event = (xcb_expose_event_t *) event;
GstVulkanWindowXCB *window_xcb;
/* 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;
window_xcb =
_find_window_from_xcb_window (display_xcb, expose_event->window);
if (window_xcb) {
gst_vulkan_window_redraw (GST_VULKAN_WINDOW (window_xcb));
gst_object_unref (window_xcb);
}
break;
}
#if 0
case KeyPress:
case KeyRelease:
keysym = XkbKeycodeToKeysym (window_xcb->device,
event.xkey.keycode, 0, 0);
key_str = XKeysymToString (keysym);
key_data = g_slice_new (struct key_event);
key_data->window = window;
key_data->key_str = XKeysymToString (keysym);
key_data->event_type =
event.type == KeyPress ? "key-press" : "key-release";
GST_DEBUG ("input event key %d pressed over window at %d,%d (%s)",
event.xkey.keycode, event.xkey.x, event.xkey.y, key_str);
g_main_context_invoke (window->navigation_context,
(GSourceFunc) gst_vulkan_window_key_event_cb, key_data);
break;
case ButtonPress:
case ButtonRelease:
GST_DEBUG ("input event mouse button %d pressed over window at %d,%d",
event.xbutton.button, event.xbutton.x, event.xbutton.y);
mouse_data = g_slice_new (struct mouse_event);
mouse_data->window = window;
mouse_data->event_type =
event.type ==
ButtonPress ? "mouse-button-press" : "mouse-button-release";
mouse_data->button = event.xbutton.button;
mouse_data->posx = (double) event.xbutton.x;
mouse_data->posy = (double) event.xbutton.y;
g_main_context_invoke (window->navigation_context,
(GSourceFunc) gst_vulkan_window_mouse_event_cb, mouse_data);
break;
case MotionNotify:
GST_DEBUG ("input event pointer moved over window at %d,%d",
event.xmotion.x, event.xmotion.y);
mouse_data = g_slice_new (struct mouse_event);
mouse_data->window = window;
mouse_data->event_type = "mouse-move";
mouse_data->button = 0;
mouse_data->posx = (double) event.xbutton.x;
mouse_data->posy = (double) event.xbutton.y;
g_main_context_invoke (window->navigation_context, (GSourceFunc)
gst_vulkan_window_mouse_event_cb, mouse_data);
break;
#endif
default:
GST_DEBUG ("unhandled XCB type: %u", event_code);
break;
}
g_free (event);
}
return ret;
}
typedef struct _XCBEventSource
{
GSource source;
GPollFD pfd;
uint32_t mask;
GstVulkanDisplayXCB *display_xcb;
} XCBEventSource;
static gboolean
xcb_event_source_prepare (GSource * base, gint * timeout)
{
*timeout = -1;
return FALSE;
}
static gboolean
xcb_event_source_check (GSource * base)
{
XCBEventSource *source = (XCBEventSource *) base;
gboolean retval;
retval = source->pfd.revents;
return retval;
}
static gboolean
xcb_event_source_dispatch (GSource * base, GSourceFunc callback, gpointer data)
{
XCBEventSource *source = (XCBEventSource *) base;
gboolean ret = _xcb_handle_event (source->display_xcb);
if (callback)
callback (data);
return ret;
}
static GSourceFuncs xcb_event_source_funcs = {
xcb_event_source_prepare,
xcb_event_source_check,
xcb_event_source_dispatch,
NULL
};
GSource *
xcb_event_source_new (GstVulkanDisplayXCB * display_xcb)
{
xcb_connection_t *connection;
XCBEventSource *source;
connection = GST_VULKAN_DISPLAY_XCB_CONNECTION (display_xcb);
g_return_val_if_fail (connection != NULL, NULL);
source = (XCBEventSource *)
g_source_new (&xcb_event_source_funcs, sizeof (XCBEventSource));
source->display_xcb = display_xcb;
source->pfd.fd = xcb_get_file_descriptor (connection);
source->pfd.events = G_IO_IN | G_IO_ERR;
g_source_add_poll (&source->source, &source->pfd);
return &source->source;
}