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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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146 lines
4.2 KiB
C
146 lines
4.2 KiB
C
/*
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* GStreamer
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* Copyright (C) 2015 Matthew Waters <matthew@centricular.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "vkdisplay_xcb.h"
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#include "xcb_event_source.h"
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#define GST_CAT_DEFAULT gst_vulkan_display_debug
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GST_DEBUG_CATEGORY_STATIC (gst_vulkan_display_debug);
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G_DEFINE_TYPE (GstVulkanDisplayXCB, gst_vulkan_display_xcb,
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GST_TYPE_VULKAN_DISPLAY);
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static void gst_vulkan_display_xcb_finalize (GObject * object);
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static gpointer gst_vulkan_display_xcb_get_handle (GstVulkanDisplay * display);
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static void
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gst_vulkan_display_xcb_class_init (GstVulkanDisplayXCBClass * klass)
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{
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GST_VULKAN_DISPLAY_CLASS (klass)->get_handle =
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GST_DEBUG_FUNCPTR (gst_vulkan_display_xcb_get_handle);
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G_OBJECT_CLASS (klass)->finalize = gst_vulkan_display_xcb_finalize;
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}
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static void
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gst_vulkan_display_xcb_init (GstVulkanDisplayXCB * display_xcb)
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{
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GstVulkanDisplay *display = (GstVulkanDisplay *) display_xcb;
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display->type = GST_VULKAN_DISPLAY_TYPE_XCB;
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display_xcb->foreign_display = FALSE;
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}
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static void
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gst_vulkan_display_xcb_finalize (GObject * object)
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{
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GstVulkanDisplayXCB *display_xcb = GST_VULKAN_DISPLAY_XCB (object);
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G_OBJECT_CLASS (gst_vulkan_display_xcb_parent_class)->finalize (object);
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if (!display_xcb->foreign_display && display_xcb->connection)
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xcb_disconnect (display_xcb->connection);
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display_xcb->connection = NULL;
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}
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static xcb_screen_t *
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_get_screen_from_connection (xcb_connection_t * connection, int screen_no)
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{
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const xcb_setup_t *setup;
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xcb_screen_iterator_t iter;
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setup = xcb_get_setup (connection);
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iter = xcb_setup_roots_iterator (setup);
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while (screen_no-- > 0)
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xcb_screen_next (&iter);
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return iter.data;
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}
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/**
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* gst_vulkan_display_xcb_new:
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* @name: (allow-none): a display name
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*
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* Create a new #GstVulkanDisplayXCB from the xcb display name. See XOpenDisplay()
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* for details on what is a valid name.
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*
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* Returns: (transfer full): a new #GstVulkanDisplayXCB or %NULL
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*/
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GstVulkanDisplayXCB *
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gst_vulkan_display_xcb_new (const gchar * name)
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{
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xcb_connection_t *connection;
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GstVulkanDisplayXCB *ret;
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int screen_no = 0;
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GST_DEBUG_CATEGORY_GET (gst_vulkan_display_debug, "gldisplay");
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connection = xcb_connect (NULL, &screen_no);
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if (connection == NULL || xcb_connection_has_error (connection)) {
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GST_ERROR ("Failed to open XCB display connection with name, \'%s\'", name);
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return NULL;
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}
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ret = gst_vulkan_display_xcb_new_with_connection (connection, screen_no);
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GST_VULKAN_DISPLAY (ret)->event_source = xcb_event_source_new (ret);
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g_source_attach (GST_VULKAN_DISPLAY (ret)->event_source,
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GST_VULKAN_DISPLAY (ret)->main_context);
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ret->foreign_display = FALSE;
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return ret;
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}
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/**
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* gst_vulkan_display_xcb_new_with_connection:
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* @display: an existing, xcb display
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*
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* Creates a new display connection from a XCB Display.
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*
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* Returns: (transfer full): a new #GstVulkanDisplayXCB
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*/
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GstVulkanDisplayXCB *
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gst_vulkan_display_xcb_new_with_connection (xcb_connection_t * connection,
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int screen_no)
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{
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GstVulkanDisplayXCB *ret;
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g_return_val_if_fail (connection != NULL, NULL);
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GST_DEBUG_CATEGORY_GET (gst_vulkan_display_debug, "gldisplay");
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ret = g_object_new (GST_TYPE_VULKAN_DISPLAY_XCB, NULL);
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ret->connection = connection;
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ret->screen = _get_screen_from_connection (connection, screen_no);
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ret->root_window = ret->screen->root;
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ret->foreign_display = TRUE;
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return ret;
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}
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static gpointer
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gst_vulkan_display_xcb_get_handle (GstVulkanDisplay * display)
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{
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return (gpointer) GST_VULKAN_DISPLAY_XCB_CONNECTION (display);
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}
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