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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 "vkdisplay_xcb.h"
#include "xcb_event_source.h"
#define GST_CAT_DEFAULT gst_vulkan_display_debug
GST_DEBUG_CATEGORY_STATIC (gst_vulkan_display_debug);
G_DEFINE_TYPE (GstVulkanDisplayXCB, gst_vulkan_display_xcb,
GST_TYPE_VULKAN_DISPLAY);
static void gst_vulkan_display_xcb_finalize (GObject * object);
static gpointer gst_vulkan_display_xcb_get_handle (GstVulkanDisplay * display);
static void
gst_vulkan_display_xcb_class_init (GstVulkanDisplayXCBClass * klass)
{
GST_VULKAN_DISPLAY_CLASS (klass)->get_handle =
GST_DEBUG_FUNCPTR (gst_vulkan_display_xcb_get_handle);
G_OBJECT_CLASS (klass)->finalize = gst_vulkan_display_xcb_finalize;
}
static void
gst_vulkan_display_xcb_init (GstVulkanDisplayXCB * display_xcb)
{
GstVulkanDisplay *display = (GstVulkanDisplay *) display_xcb;
display->type = GST_VULKAN_DISPLAY_TYPE_XCB;
display_xcb->foreign_display = FALSE;
}
static void
gst_vulkan_display_xcb_finalize (GObject * object)
{
GstVulkanDisplayXCB *display_xcb = GST_VULKAN_DISPLAY_XCB (object);
G_OBJECT_CLASS (gst_vulkan_display_xcb_parent_class)->finalize (object);
if (!display_xcb->foreign_display && display_xcb->connection)
xcb_disconnect (display_xcb->connection);
display_xcb->connection = NULL;
}
static xcb_screen_t *
_get_screen_from_connection (xcb_connection_t * connection, int screen_no)
{
const xcb_setup_t *setup;
xcb_screen_iterator_t iter;
setup = xcb_get_setup (connection);
iter = xcb_setup_roots_iterator (setup);
while (screen_no-- > 0)
xcb_screen_next (&iter);
return iter.data;
}
/**
* gst_vulkan_display_xcb_new:
* @name: (allow-none): a display name
*
* Create a new #GstVulkanDisplayXCB from the xcb display name. See XOpenDisplay()
* for details on what is a valid name.
*
* Returns: (transfer full): a new #GstVulkanDisplayXCB or %NULL
*/
GstVulkanDisplayXCB *
gst_vulkan_display_xcb_new (const gchar * name)
{
xcb_connection_t *connection;
GstVulkanDisplayXCB *ret;
int screen_no = 0;
GST_DEBUG_CATEGORY_GET (gst_vulkan_display_debug, "gldisplay");
connection = xcb_connect (NULL, &screen_no);
if (connection == NULL || xcb_connection_has_error (connection)) {
GST_ERROR ("Failed to open XCB display connection with name, \'%s\'", name);
return NULL;
}
ret = gst_vulkan_display_xcb_new_with_connection (connection, screen_no);
GST_VULKAN_DISPLAY (ret)->event_source = xcb_event_source_new (ret);
g_source_attach (GST_VULKAN_DISPLAY (ret)->event_source,
GST_VULKAN_DISPLAY (ret)->main_context);
ret->foreign_display = FALSE;
return ret;
}
/**
* gst_vulkan_display_xcb_new_with_connection:
* @display: an existing, xcb display
*
* Creates a new display connection from a XCB Display.
*
* Returns: (transfer full): a new #GstVulkanDisplayXCB
*/
GstVulkanDisplayXCB *
gst_vulkan_display_xcb_new_with_connection (xcb_connection_t * connection,
int screen_no)
{
GstVulkanDisplayXCB *ret;
g_return_val_if_fail (connection != NULL, NULL);
GST_DEBUG_CATEGORY_GET (gst_vulkan_display_debug, "gldisplay");
ret = g_object_new (GST_TYPE_VULKAN_DISPLAY_XCB, NULL);
gst_object_ref_sink (ret);
ret->connection = connection;
ret->screen = _get_screen_from_connection (connection, screen_no);
ret->root_window = ret->screen->root;
ret->foreign_display = TRUE;
return ret;
}
static gpointer
gst_vulkan_display_xcb_get_handle (GstVulkanDisplay * display)
{
return (gpointer) GST_VULKAN_DISPLAY_XCB_CONNECTION (display);
}
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