gstreamer/ext/vulkan/vkwindow.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.
*/
/**
* SECTION:vkwindow
* @short_description: window/surface abstraction
* @title: GstVulkanWindow
* @see_also: #GstGLContext, #GstGLDisplay
*
* GstVulkanWindow represents a window that elements can render into. A window can
* either be a user visible window (onscreen) or hidden (offscreen).
*/
#if HAVE_CONFIG_H
# include "config.h"
#endif
#include <gmodule.h>
#include <stdio.h>
#include "vkwindow.h"
#if GST_VULKAN_HAVE_WINDOW_X11
#include "x11/vkwindow_x11.h"
#endif
#if GST_VULKAN_HAVE_WINDOW_XCB
#include "xcb/vkwindow_xcb.h"
#endif
#if GST_VULKAN_HAVE_WINDOW_WAYLAND
#include "wayland/vkwindow_wayland.h"
#endif
#define GST_CAT_DEFAULT gst_vulkan_window_debug
GST_DEBUG_CATEGORY (GST_CAT_DEFAULT);
struct _GstVulkanWindowPrivate
{
guint surface_width;
guint surface_height;
};
#define gst_vulkan_window_parent_class parent_class
G_DEFINE_ABSTRACT_TYPE_WITH_PRIVATE (GstVulkanWindow, gst_vulkan_window,
GST_TYPE_OBJECT);
static void gst_vulkan_window_finalize (GObject * object);
typedef struct _GstVulkanDummyWindow
{
GstVulkanWindow parent;
guintptr handle;
} GstVulkanDummyWindow;
typedef struct _GstVulkanDummyWindowCass
{
GstVulkanWindowClass parent;
} GstVulkanDummyWindowClass;
GstVulkanDummyWindow *gst_vulkan_dummy_window_new (void);
enum
{
SIGNAL_0,
SIGNAL_CLOSE,
SIGNAL_DRAW,
LAST_SIGNAL
};
static guint gst_vulkan_window_signals[LAST_SIGNAL] = { 0 };
static gboolean
_accum_logical_and (GSignalInvocationHint * ihint, GValue * return_accu,
const GValue * handler_return, gpointer data)
{
gboolean val = g_value_get_boolean (handler_return);
gboolean val2 = g_value_get_boolean (return_accu);
g_value_set_boolean (return_accu, val && val2);
return TRUE;
}
GQuark
gst_vulkan_window_error_quark (void)
{
return g_quark_from_static_string ("gst-gl-window-error-quark");
}
static gboolean
gst_vulkan_window_default_open (GstVulkanWindow * window, GError ** error)
{
return TRUE;
}
static void
gst_vulkan_window_default_close (GstVulkanWindow * window)
{
}
static void
_init_debug (void)
{
static volatile gsize _init = 0;
if (g_once_init_enter (&_init)) {
GST_DEBUG_CATEGORY_INIT (GST_CAT_DEFAULT, "vulkanwindow", 0,
"Vulkan Window");
g_once_init_leave (&_init, 1);
}
}
static void
gst_vulkan_window_init (GstVulkanWindow * window)
{
window->priv = gst_vulkan_window_get_instance_private (window);
}
static void
gst_vulkan_window_class_init (GstVulkanWindowClass * klass)
{
klass->open = GST_DEBUG_FUNCPTR (gst_vulkan_window_default_open);
klass->close = GST_DEBUG_FUNCPTR (gst_vulkan_window_default_close);
gst_vulkan_window_signals[SIGNAL_CLOSE] =
g_signal_new ("close", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST, 0,
(GSignalAccumulator) _accum_logical_and, NULL, NULL, G_TYPE_BOOLEAN, 0);
gst_vulkan_window_signals[SIGNAL_DRAW] =
g_signal_new ("draw", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST, 0,
NULL, NULL, NULL, G_TYPE_NONE, 0);
G_OBJECT_CLASS (klass)->finalize = gst_vulkan_window_finalize;
_init_debug ();
}
/**
* gst_vulkan_window_new:
* @display: a #GstGLDisplay
*
* Returns: (transfer full): a new #GstVulkanWindow using @display's connection
*
* Since: 1.10
*/
GstVulkanWindow *
gst_vulkan_window_new (GstVulkanDisplay * display)
{
GstVulkanWindow *window = NULL;
const gchar *user_choice;
g_return_val_if_fail (display != NULL, NULL);
_init_debug ();
user_choice = g_getenv ("GST_VULKAN_WINDOW");
GST_INFO ("creating a window, user choice:%s", user_choice);
#if GST_VULKAN_HAVE_WINDOW_X11
if (!window && (!user_choice || g_strstr_len (user_choice, 3, "x11")))
window = GST_VULKAN_WINDOW (gst_vulkan_window_x11_new (display));
#endif
#if GST_VULKAN_HAVE_WINDOW_XCB
if (!window && (!user_choice || g_strstr_len (user_choice, 3, "xcb")))
window = GST_VULKAN_WINDOW (gst_vulkan_window_xcb_new (display));
#endif
#if GST_VULKAN_HAVE_WINDOW_WAYLAND
if (!window && (!user_choice || g_strstr_len (user_choice, 7, "wayland")))
window = GST_VULKAN_WINDOW (gst_vulkan_window_wayland_new (display));
#endif
if (!window) {
/* subclass returned a NULL window */
GST_WARNING ("Could not create window. user specified %s, creating dummy"
" window", user_choice ? user_choice : "(null)");
window = GST_VULKAN_WINDOW (gst_vulkan_dummy_window_new ());
}
window->display = gst_object_ref (display);
return window;
}
static void
gst_vulkan_window_finalize (GObject * object)
{
GstVulkanWindow *window = GST_VULKAN_WINDOW (object);
gst_object_unref (window->display);
G_OBJECT_CLASS (gst_vulkan_window_parent_class)->finalize (object);
}
GstVulkanDisplay *
gst_vulkan_window_get_display (GstVulkanWindow * window)
{
g_return_val_if_fail (GST_IS_VULKAN_WINDOW (window), NULL);
return gst_object_ref (window->display);
}
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VkSurfaceKHR
gst_vulkan_window_get_surface (GstVulkanWindow * window, GError ** error)
{
GstVulkanWindowClass *klass;
g_return_val_if_fail (GST_IS_VULKAN_WINDOW (window), (VkSurfaceKHR) 0);
klass = GST_VULKAN_WINDOW_GET_CLASS (window);
g_return_val_if_fail (klass->get_surface != NULL, (VkSurfaceKHR) 0);
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return klass->get_surface (window, error);
}
gboolean
gst_vulkan_window_get_presentation_support (GstVulkanWindow * window,
GstVulkanDevice * device, guint32 queue_family_idx)
{
GstVulkanWindowClass *klass;
g_return_val_if_fail (GST_IS_VULKAN_WINDOW (window), FALSE);
klass = GST_VULKAN_WINDOW_GET_CLASS (window);
g_return_val_if_fail (klass->get_presentation_support != NULL, FALSE);
return klass->get_presentation_support (window, device, queue_family_idx);
}
gboolean
gst_vulkan_window_open (GstVulkanWindow * window, GError ** error)
{
GstVulkanWindowClass *klass;
g_return_val_if_fail (GST_IS_VULKAN_WINDOW (window), FALSE);
klass = GST_VULKAN_WINDOW_GET_CLASS (window);
g_return_val_if_fail (klass->open != NULL, FALSE);
return klass->open (window, error);
}
void
gst_vulkan_window_close (GstVulkanWindow * window)
{
GstVulkanWindowClass *klass;
gboolean to_close;
g_return_if_fail (GST_IS_VULKAN_WINDOW (window));
klass = GST_VULKAN_WINDOW_GET_CLASS (window);
g_return_if_fail (klass->close != NULL);
g_signal_emit (window, gst_vulkan_window_signals[SIGNAL_CLOSE], 0, &to_close);
if (to_close)
klass->close (window);
}
void
gst_vulkan_window_resize (GstVulkanWindow * window, gint width, gint height)
{
g_return_if_fail (GST_IS_VULKAN_WINDOW (window));
window->priv->surface_width = width;
window->priv->surface_height = height;
/* XXX: possibly queue a resize/redraw */
}
void
gst_vulkan_window_redraw (GstVulkanWindow * window)
{
g_return_if_fail (GST_IS_VULKAN_WINDOW (window));
g_signal_emit (window, gst_vulkan_window_signals[SIGNAL_DRAW], 0);
}
GType gst_vulkan_dummy_window_get_type (void);
G_DEFINE_TYPE (GstVulkanDummyWindow, gst_vulkan_dummy_window,
GST_TYPE_VULKAN_WINDOW);
static void
gst_vulkan_dummy_window_class_init (GstVulkanDummyWindowClass * klass)
{
}
static void
gst_vulkan_dummy_window_init (GstVulkanDummyWindow * dummy)
{
dummy->handle = 0;
}
GstVulkanDummyWindow *
gst_vulkan_dummy_window_new (void)
{
GstVulkanDummyWindow *window;
window = g_object_new (gst_vulkan_dummy_window_get_type (), NULL);
gst_object_ref_sink (window);
return window;
}