gstreamer/subprojects/gst-plugins-bad/gst-libs/gst/vulkan/win32/gstvkwindow_win32.c

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/*
* GStreamer
* Copyright (C) 2008 Julien Isorce <julien.isorce@gmail.com>
* Copyright (C) 2012 Matthew Waters <ystreet00@gmail.com>
* Copyright (C) 2019 Seungha Yang <seungha.yang@navercorp.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 "gstvkwindow_win32.h"
LRESULT CALLBACK window_proc (HWND hWnd, UINT uMsg, WPARAM wParam,
LPARAM lParam);
LRESULT FAR PASCAL sub_class_proc (HWND hWnd, UINT uMsg, WPARAM wParam,
LPARAM lParam);
enum
{
PROP_0
};
struct _GstVulkanWindowWin32Private
{
GIOChannel *msg_io_channel;
gint preferred_width;
gint preferred_height;
};
#define GST_CAT_DEFAULT gst_vulkan_window_win32_debug
GST_DEBUG_CATEGORY_STATIC (GST_CAT_DEFAULT);
#define DEBUG_INIT \
GST_DEBUG_CATEGORY_GET (GST_CAT_DEFAULT, "vulkanwindow");
#define gst_vulkan_window_win32_parent_class parent_class
G_DEFINE_TYPE_WITH_CODE (GstVulkanWindowWin32, gst_vulkan_window_win32,
GST_TYPE_VULKAN_WINDOW, G_ADD_PRIVATE (GstVulkanWindowWin32) DEBUG_INIT);
#define GET_PRIV(window) gst_vulkan_window_win32_get_instance_private (window)
static void gst_vulkan_window_win32_set_window_handle (GstVulkanWindow * window,
guintptr handle);
static VkSurfaceKHR
gst_vulkan_window_win32_get_surface (GstVulkanWindow * window, GError ** error);
static gboolean
gst_vulkan_window_win32_get_presentation_support (GstVulkanWindow * window,
GstVulkanDevice * device, guint32 queue_family_idx);
static gboolean gst_vulkan_window_win32_open (GstVulkanWindow * window,
GError ** error);
static void gst_vulkan_window_win32_close (GstVulkanWindow * window);
static void release_parent_win_id (GstVulkanWindowWin32 * window_win32);
static void gst_vulkan_window_win32_show (GstVulkanWindowWin32 * window);
static void
gst_vulkan_window_win32_class_init (GstVulkanWindowWin32Class * klass)
{
GstVulkanWindowClass *window_class = (GstVulkanWindowClass *) klass;
window_class->set_window_handle =
GST_DEBUG_FUNCPTR (gst_vulkan_window_win32_set_window_handle);
window_class->get_surface =
GST_DEBUG_FUNCPTR (gst_vulkan_window_win32_get_surface);
window_class->open = GST_DEBUG_FUNCPTR (gst_vulkan_window_win32_open);
window_class->close = GST_DEBUG_FUNCPTR (gst_vulkan_window_win32_close);
window_class->get_presentation_support =
GST_DEBUG_FUNCPTR (gst_vulkan_window_win32_get_presentation_support);
}
static void
gst_vulkan_window_win32_init (GstVulkanWindowWin32 * window)
{
GstVulkanWindowWin32Private *priv = GET_PRIV (window);
priv->preferred_width = 320;
priv->preferred_height = 240;
}
GstVulkanWindowWin32 *
gst_vulkan_window_win32_new (GstVulkanDisplay * display)
{
GstVulkanWindowWin32 *window;
if ((gst_vulkan_display_get_handle_type (display) &
GST_VULKAN_DISPLAY_TYPE_WIN32) == 0)
/* we require an win32 display to create win32 windows */
return NULL;
window = g_object_new (GST_TYPE_VULKAN_WINDOW_WIN32, NULL);
gst_object_ref_sink (window);
return window;
}
static gboolean
msg_cb (GIOChannel * source, GIOCondition condition, gpointer data)
{
MSG msg;
if (!PeekMessage (&msg, NULL, 0, 0, PM_REMOVE))
return G_SOURCE_CONTINUE;
GST_TRACE ("handle message");
TranslateMessage (&msg);
DispatchMessage (&msg);
return G_SOURCE_CONTINUE;
}
typedef struct
{
GstVulkanWindowWin32 *self;
GError **error;
gboolean fired;
gboolean ret;
GMutex lock;
GCond cond;
} CreateWindowData;
static gboolean
_create_window (CreateWindowData * data)
{
data->ret = gst_vulkan_window_win32_create_window (data->self, data->error);
g_mutex_lock (&data->lock);
data->fired = TRUE;
g_cond_signal (&data->cond);
g_mutex_unlock (&data->lock);
return G_SOURCE_REMOVE;
}
static gboolean
gst_vulkan_window_win32_open (GstVulkanWindow * window, GError ** error)
{
GstVulkanWindowWin32 *window_win32 = GST_VULKAN_WINDOW_WIN32 (window);
GstVulkanWindowWin32Private *priv = GET_PRIV (window_win32);
GstVulkanDisplay *display;
GMainContext *context;
CreateWindowData data = { 0, };
if (!GST_VULKAN_WINDOW_CLASS (parent_class)->open (window, error))
return FALSE;
display = gst_vulkan_window_get_display (window);
context = g_main_context_ref (display->main_context);
gst_object_unref (display);
priv->msg_io_channel = g_io_channel_win32_new_messages (0);
window_win32->msg_source = g_io_create_watch (priv->msg_io_channel, G_IO_IN);
g_source_set_callback (window_win32->msg_source, (GSourceFunc) msg_cb, NULL,
NULL);
g_source_attach (window_win32->msg_source, context);
data.self = window_win32;
data.error = error;
g_mutex_init (&data.lock);
g_cond_init (&data.cond);
g_main_context_invoke (context, (GSourceFunc) _create_window, &data);
g_mutex_lock (&data.lock);
while (!data.fired)
g_cond_wait (&data.cond, &data.lock);
g_mutex_unlock (&data.lock);
g_mutex_clear (&data.lock);
g_cond_clear (&data.cond);
g_main_context_unref (context);
if (!data.ret)
return FALSE;
gst_vulkan_window_win32_show (window_win32);
return TRUE;
}
static void
gst_vulkan_window_win32_close (GstVulkanWindow * window)
{
GstVulkanWindowWin32 *window_win32 = GST_VULKAN_WINDOW_WIN32 (window);
GstVulkanWindowWin32Private *priv = GET_PRIV (window_win32);
release_parent_win_id (window_win32);
if (window_win32->internal_win_id) {
RemoveProp (window_win32->internal_win_id, "vulkan_window");
ShowWindow (window_win32->internal_win_id, SW_HIDE);
SetParent (window_win32->internal_win_id, NULL);
if (!DestroyWindow (window_win32->internal_win_id))
GST_WARNING ("failed to destroy window %" G_GUINTPTR_FORMAT
", 0x%x", (guintptr) window_win32->internal_win_id,
(unsigned int) GetLastError ());
}
g_source_destroy (window_win32->msg_source);
g_source_unref (window_win32->msg_source);
window_win32->msg_source = NULL;
g_io_channel_unref (priv->msg_io_channel);
priv->msg_io_channel = NULL;
GST_VULKAN_WINDOW_CLASS (parent_class)->close (window);
}
static void
set_parent_win_id (GstVulkanWindowWin32 * window_win32)
{
WNDPROC window_parent_proc;
RECT rect;
if (!window_win32->parent_win_id) {
/* no parent so the internal window needs borders and system menu */
SetWindowLongPtr (window_win32->internal_win_id, GWL_STYLE,
WS_CLIPSIBLINGS | WS_CLIPCHILDREN | WS_OVERLAPPEDWINDOW);
SetParent (window_win32->internal_win_id, NULL);
return;
}
window_parent_proc =
(WNDPROC) GetWindowLongPtr (window_win32->parent_win_id, GWLP_WNDPROC);
GST_DEBUG ("set parent %" G_GUINTPTR_FORMAT,
(guintptr) window_win32->parent_win_id);
SetProp (window_win32->parent_win_id, "vulkan_window_id",
window_win32->internal_win_id);
SetProp (window_win32->parent_win_id, "vulkan_window_parent_proc",
(WNDPROC) window_parent_proc);
SetWindowLongPtr (window_win32->parent_win_id, GWLP_WNDPROC,
(LONG_PTR) sub_class_proc);
SetWindowLongPtr (window_win32->internal_win_id, GWL_STYLE,
WS_CHILD | WS_MAXIMIZE);
SetParent (window_win32->internal_win_id, window_win32->parent_win_id);
/* take changes into account: SWP_FRAMECHANGED */
GetClientRect (window_win32->parent_win_id, &rect);
SetWindowPos (window_win32->internal_win_id, HWND_TOP, rect.left, rect.top,
rect.right, rect.bottom,
SWP_ASYNCWINDOWPOS | SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER |
SWP_FRAMECHANGED | SWP_NOACTIVATE);
MoveWindow (window_win32->internal_win_id, rect.left, rect.top, rect.right,
rect.bottom, FALSE);
}
static void
release_parent_win_id (GstVulkanWindowWin32 * window_win32)
{
WNDPROC parent_proc;
if (!window_win32->parent_win_id)
return;
parent_proc =
GetProp (window_win32->parent_win_id, "vulkan_window_parent_proc");
if (!parent_proc)
return;
GST_DEBUG ("release parent %" G_GUINTPTR_FORMAT,
(guintptr) window_win32->parent_win_id);
SetWindowLongPtr (window_win32->parent_win_id, GWLP_WNDPROC,
(LONG_PTR) parent_proc);
RemoveProp (window_win32->parent_win_id, "vulkan_window_parent_proc");
}
static gboolean
gst_vulkan_window_win32_create_window (GstVulkanWindowWin32 * window_win32,
GError ** error)
{
WNDCLASSEX wc;
ATOM atom = 0;
HINSTANCE hinstance = GetModuleHandle (NULL);
static gint x = 0;
static gint y = 0;
GST_LOG ("Attempting to create a win32 window");
x += 20;
y += 20;
atom = GetClassInfoEx (hinstance, "GSTVULKAN", &wc);
if (atom == 0) {
ZeroMemory (&wc, sizeof (WNDCLASSEX));
wc.cbSize = sizeof (WNDCLASSEX);
wc.lpfnWndProc = window_proc;
wc.cbClsExtra = 0;
wc.cbWndExtra = 0;
wc.hInstance = hinstance;
wc.hIcon = LoadIcon (NULL, IDI_WINLOGO);
wc.hIconSm = NULL;
wc.style = CS_OWNDC | CS_HREDRAW | CS_VREDRAW;
wc.hCursor = LoadCursor (NULL, IDC_ARROW);
wc.hbrBackground = (HBRUSH) GetStockObject (BLACK_BRUSH);
wc.lpszMenuName = NULL;
wc.lpszClassName = "GSTVULKAN";
atom = RegisterClassEx (&wc);
if (atom == 0) {
g_set_error (error, GST_VULKAN_WINDOW_ERROR,
GST_VULKAN_WINDOW_ERROR_RESOURCE_UNAVAILABLE,
"Failed to register window class 0x%x\n",
(unsigned int) GetLastError ());
goto failure;
}
}
window_win32->internal_win_id = 0;
window_win32->device = 0;
window_win32->visible = FALSE;
window_win32->internal_win_id = CreateWindowEx (0,
"GSTVULKAN",
"Vulkan renderer",
WS_CLIPSIBLINGS | WS_CLIPCHILDREN | WS_OVERLAPPEDWINDOW,
x, y, 0, 0, (HWND) NULL, (HMENU) NULL, hinstance, window_win32);
if (!window_win32->internal_win_id) {
g_set_error (error, GST_VULKAN_WINDOW_ERROR,
GST_VULKAN_WINDOW_ERROR_RESOURCE_UNAVAILABLE,
"failed to create vulkan window");
goto failure;
}
GST_DEBUG ("vulkan window created: %" G_GUINTPTR_FORMAT,
(guintptr) window_win32->internal_win_id);
/* device is set in the window_proc */
if (!window_win32->device) {
g_set_error (error, GST_VULKAN_WINDOW_ERROR,
GST_VULKAN_WINDOW_ERROR_RESOURCE_UNAVAILABLE,
"failed to create device");
goto failure;
}
ShowCursor (TRUE);
GST_LOG ("Created a win32 window");
/* The window has been created as if it had no parent, so there is nothing
* else to do in that case. Even if user has already set a window,
* parent_win_id could still be 0 at this point, and in that case calling
* set_parent_win_id() here would steal focus from the parent window. */
if (window_win32->parent_win_id)
set_parent_win_id (window_win32);
return TRUE;
failure:
return FALSE;
}
static VkSurfaceKHR
gst_vulkan_window_win32_get_surface (GstVulkanWindow * window, GError ** error)
{
GstVulkanWindowWin32 *window_win32 = GST_VULKAN_WINDOW_WIN32 (window);
VkWin32SurfaceCreateInfoKHR info = { 0, };
VkSurfaceKHR ret;
VkResult err;
info.sType = VK_STRUCTURE_TYPE_WIN32_SURFACE_CREATE_INFO_KHR;
info.pNext = NULL;
info.flags = 0;
info.hinstance = GetModuleHandle (NULL);
info.hwnd = window_win32->parent_win_id ? window_win32->parent_win_id :
window_win32->internal_win_id;
if (!window_win32->CreateWin32Surface)
window_win32->CreateWin32Surface =
gst_vulkan_instance_get_proc_address (window->display->instance,
"vkCreateWin32SurfaceKHR");
if (!window_win32->CreateWin32Surface) {
g_set_error_literal (error, GST_VULKAN_ERROR, VK_ERROR_FEATURE_NOT_PRESENT,
"Could not retrieve \"vkCreateWin32SurfaceKHR\" function pointer");
return VK_NULL_HANDLE;
}
err =
window_win32->CreateWin32Surface (window->display->instance->instance,
&info, NULL, &ret);
if (gst_vulkan_error_to_g_error (err, error, "vkCreateWin32SurfaceKHR") < 0)
return VK_NULL_HANDLE;
return ret;
}
static gboolean
gst_vulkan_window_win32_get_presentation_support (GstVulkanWindow * window,
GstVulkanDevice * device, guint32 queue_family_idx)
{
GstVulkanWindowWin32 *window_win32 = GST_VULKAN_WINDOW_WIN32 (window);
VkPhysicalDevice gpu;
if (!window_win32->GetPhysicalDeviceWin32PresentationSupport)
window_win32->GetPhysicalDeviceWin32PresentationSupport =
gst_vulkan_instance_get_proc_address (window->display->instance,
"vkGetPhysicalDeviceWin32PresentationSupportKHR");
if (!window_win32->GetPhysicalDeviceWin32PresentationSupport) {
GST_WARNING_OBJECT (window, "Could not retrieve "
"\"GetPhysicalDeviceWin32PresentationSupport\" " "function pointer");
return FALSE;
}
gpu = gst_vulkan_device_get_physical_device (device);
if (window_win32->GetPhysicalDeviceWin32PresentationSupport (gpu,
queue_family_idx))
return TRUE;
return FALSE;
}
static void
gst_vulkan_window_win32_set_window_handle (GstVulkanWindow * window,
guintptr id)
{
GstVulkanWindowWin32 *window_win32;
window_win32 = GST_VULKAN_WINDOW_WIN32 (window);
if (!window_win32->internal_win_id) {
window_win32->parent_win_id = (HWND) id;
return;
}
if (window_win32->visible) {
ShowWindow (window_win32->internal_win_id, SW_HIDE);
window_win32->visible = FALSE;
}
release_parent_win_id (window_win32);
window_win32->parent_win_id = (HWND) id;
set_parent_win_id (window_win32);
}
static void
gst_vulkan_window_win32_show (GstVulkanWindowWin32 * window)
{
GstVulkanWindowWin32Private *priv = GET_PRIV (window);
gint width = priv->preferred_width;
gint height = priv->preferred_height;
if (!window->visible) {
HWND parent_id = window->parent_win_id;
/* if no parent the real size has to be set now because this has not been done
* when at window creation */
if (!parent_id) {
RECT rect;
GetClientRect (window->internal_win_id, &rect);
width += 2 * GetSystemMetrics (SM_CXSIZEFRAME);
height +=
2 * GetSystemMetrics (SM_CYSIZEFRAME) +
GetSystemMetrics (SM_CYCAPTION);
MoveWindow (window->internal_win_id, rect.left, rect.top, width,
height, FALSE);
}
ShowWindowAsync (window->internal_win_id, SW_SHOW);
window->visible = TRUE;
}
}
/* PRIVATE */
LRESULT CALLBACK
window_proc (HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
GstVulkanWindowWin32 *window_win32;
LRESULT ret = 0;
if (uMsg == WM_CREATE) {
window_win32 =
GST_VULKAN_WINDOW_WIN32 (((LPCREATESTRUCT) lParam)->lpCreateParams);
GST_TRACE ("WM_CREATE");
window_win32->device = GetDC (hWnd);
/* Do this, otherwise we hang on exit. We can still use it (due to the
* CS_OWNDC flag in the WindowClass) after we have Released.
*/
ReleaseDC (hWnd, window_win32->device);
SetProp (hWnd, "vulkan_window", window_win32);
} else if (GetProp (hWnd, "vulkan_window")) {
GstVulkanWindow *window;
window_win32 = GST_VULKAN_WINDOW_WIN32 (GetProp (hWnd, "vulkan_window"));
window = GST_VULKAN_WINDOW (window_win32);
g_assert (window_win32->internal_win_id == hWnd);
switch (uMsg) {
case WM_SIZE:
gst_vulkan_window_resize (window, LOWORD (lParam), HIWORD (lParam));
break;
case WM_PAINT:
{
PAINTSTRUCT ps;
BeginPaint (hWnd, &ps);
gst_vulkan_window_redraw (window);
EndPaint (hWnd, &ps);
break;
}
case WM_CLOSE:
{
ShowWindowAsync (window_win32->internal_win_id, SW_HIDE);
gst_vulkan_window_win32_close (window);
break;
}
case WM_ERASEBKGND:
{
ret = TRUE;
break;
}
default:
{
ret = DefWindowProc (hWnd, uMsg, wParam, lParam);
break;
}
}
} else {
ret = DefWindowProc (hWnd, uMsg, wParam, lParam);
}
return ret;
}
LRESULT FAR PASCAL
sub_class_proc (HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
WNDPROC window_parent_proc = GetProp (hWnd, "vulkan_window_parent_proc");
if (uMsg == WM_SIZE) {
HWND vulkan_window_id = GetProp (hWnd, "vulkan_window_id");
MoveWindow (vulkan_window_id, 0, 0, LOWORD (lParam), HIWORD (lParam),
FALSE);
}
return CallWindowProc (window_parent_proc, hWnd, uMsg, wParam, lParam);
}