gstreamer/sys/d3d11/gstd3d11window_win32.cpp
Matthew Waters 640a65bf96 gst: don't use volatile to mean atomic
volatile is not sufficient to provide atomic guarantees and real atomics
should be used instead.  GCC 11 has started warning about using volatile
with atomic operations.

https://gitlab.gnome.org/GNOME/glib/-/merge_requests/1719

Discovered in https://gitlab.freedesktop.org/gstreamer/gst-plugins-good/-/issues/868

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/2098>
2021-03-22 14:34:36 +11:00

1028 lines
30 KiB
C++

/*
* 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 "gstd3d11window_win32.h"
/* *INDENT-OFF* */
G_BEGIN_DECLS
GST_DEBUG_CATEGORY_EXTERN (gst_d3d11_window_debug);
#define GST_CAT_DEFAULT gst_d3d11_window_debug
G_END_DECLS
/* *INDENT-ON* */
G_LOCK_DEFINE_STATIC (create_lock);
#define EXTERNAL_PROC_PROP_NAME "d3d11_window_external_proc"
#define D3D11_WINDOW_PROP_NAME "gst_d3d11_window_win32_object"
#define WM_GST_D3D11_FULLSCREEN (WM_USER + 1)
#define WM_GST_D3D11_CONSTRUCT_INTERNAL_WINDOW (WM_USER + 2)
static LRESULT CALLBACK window_proc (HWND hWnd, UINT uMsg, WPARAM wParam,
LPARAM lParam);
static LRESULT FAR PASCAL sub_class_proc (HWND hWnd, UINT uMsg, WPARAM wParam,
LPARAM lParam);
typedef enum
{
GST_D3D11_WINDOW_WIN32_OVERLAY_STATE_NONE = 0,
GST_D3D11_WINDOW_WIN32_OVERLAY_STATE_OPENED,
GST_D3D11_WINDOW_WIN32_OVERLAY_STATE_CLOSED,
} GstD3D11WindowWin32OverlayState;
struct _GstD3D11WindowWin32
{
GstD3D11Window parent;
GMutex lock;
GCond cond;
GMainContext *main_context;
GMainLoop *loop;
gboolean visible;
GSource *msg_source;
GIOChannel *msg_io_channel;
GThread *thread;
HWND internal_hwnd;
HWND external_hwnd;
GstD3D11WindowWin32OverlayState overlay_state;
HDC device_handle;
gboolean first_present;
gboolean have_swapchain1;
/* atomic */
gint pending_fullscreen_count;
/* fullscreen related */
RECT restore_rect;
LONG restore_style;
};
#define gst_d3d11_window_win32_parent_class parent_class
G_DEFINE_TYPE (GstD3D11WindowWin32, gst_d3d11_window_win32,
GST_TYPE_D3D11_WINDOW);
static void gst_d3d11_window_win32_constructed (GObject * object);
static void gst_d3d11_window_win32_dispose (GObject * object);
static void gst_d3d11_window_win32_finalize (GObject * object);
static void gst_d3d11_window_win32_show (GstD3D11Window * window);
static void gst_d3d11_window_win32_update_swap_chain (GstD3D11Window * window);
static void
gst_d3d11_window_win32_change_fullscreen_mode (GstD3D11Window * window);
static gboolean
gst_d3d11_window_win32_create_swap_chain (GstD3D11Window * window,
DXGI_FORMAT format, guint width, guint height,
guint swapchain_flags, IDXGISwapChain ** swap_chain);
static GstFlowReturn gst_d3d11_window_win32_present (GstD3D11Window * window,
guint present_flags);
static gpointer gst_d3d11_window_win32_thread_func (gpointer data);
static gboolean
gst_d3d11_window_win32_create_internal_window (GstD3D11WindowWin32 * self);
static void gst_d3d11_window_win32_close_internal_window (GstD3D11WindowWin32 *
self);
static void gst_d3d11_window_win32_release_external_handle (GstD3D11WindowWin32
* self);
static void
gst_d3d11_window_win32_set_window_handle (GstD3D11WindowWin32 * self,
guintptr handle);
static void
gst_d3d11_window_win32_on_resize (GstD3D11Window * window,
guint width, guint height);
static void gst_d3d11_window_win32_unprepare (GstD3D11Window * window);
static void
gst_d3d11_window_win32_class_init (GstD3D11WindowWin32Class * klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GstD3D11WindowClass *window_class = GST_D3D11_WINDOW_CLASS (klass);
gobject_class->constructed = gst_d3d11_window_win32_constructed;
gobject_class->dispose = gst_d3d11_window_win32_dispose;
gobject_class->finalize = gst_d3d11_window_win32_finalize;
window_class->show = GST_DEBUG_FUNCPTR (gst_d3d11_window_win32_show);
window_class->update_swap_chain =
GST_DEBUG_FUNCPTR (gst_d3d11_window_win32_update_swap_chain);
window_class->change_fullscreen_mode =
GST_DEBUG_FUNCPTR (gst_d3d11_window_win32_change_fullscreen_mode);
window_class->create_swap_chain =
GST_DEBUG_FUNCPTR (gst_d3d11_window_win32_create_swap_chain);
window_class->present = GST_DEBUG_FUNCPTR (gst_d3d11_window_win32_present);
window_class->on_resize =
GST_DEBUG_FUNCPTR (gst_d3d11_window_win32_on_resize);
window_class->unprepare =
GST_DEBUG_FUNCPTR (gst_d3d11_window_win32_unprepare);
}
static void
gst_d3d11_window_win32_init (GstD3D11WindowWin32 * self)
{
g_mutex_init (&self->lock);
g_cond_init (&self->cond);
self->main_context = g_main_context_new ();
}
static void
gst_d3d11_window_win32_constructed (GObject * object)
{
GstD3D11Window *window = GST_D3D11_WINDOW (object);
GstD3D11WindowWin32 *self = GST_D3D11_WINDOW_WIN32 (object);
if (window->external_handle) {
gst_d3d11_window_win32_set_window_handle (self, window->external_handle);
goto done;
}
g_mutex_lock (&self->lock);
self->loop = g_main_loop_new (self->main_context, FALSE);
self->thread = g_thread_new ("GstD3D11WindowWin32",
(GThreadFunc) gst_d3d11_window_win32_thread_func, self);
while (!g_main_loop_is_running (self->loop))
g_cond_wait (&self->cond, &self->lock);
g_mutex_unlock (&self->lock);
done:
G_OBJECT_CLASS (parent_class)->constructed (object);
}
static void
gst_d3d11_window_win32_dispose (GObject * object)
{
gst_d3d11_window_win32_unprepare (GST_D3D11_WINDOW (object));
G_OBJECT_CLASS (parent_class)->dispose (object);
}
static void
gst_d3d11_window_win32_unprepare (GstD3D11Window * window)
{
GstD3D11WindowWin32 *self = GST_D3D11_WINDOW_WIN32 (window);
gst_d3d11_window_win32_release_external_handle (self);
if (self->loop) {
g_main_loop_quit (self->loop);
}
if (self->thread) {
g_thread_join (self->thread);
self->thread = NULL;
}
if (self->loop) {
g_main_loop_unref (self->loop);
self->loop = NULL;
}
if (self->main_context) {
g_main_context_unref (self->main_context);
self->main_context = NULL;
}
gst_d3d11_window_win32_close_internal_window (self);
}
static void
gst_d3d11_window_win32_finalize (GObject * object)
{
GstD3D11WindowWin32 *self = GST_D3D11_WINDOW_WIN32 (object);
g_mutex_clear (&self->lock);
g_cond_clear (&self->cond);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static gboolean
running_cb (gpointer user_data)
{
GstD3D11WindowWin32 *self = GST_D3D11_WINDOW_WIN32 (user_data);
GST_TRACE_OBJECT (self, "Main loop running now");
g_mutex_lock (&self->lock);
g_cond_signal (&self->cond);
g_mutex_unlock (&self->lock);
return G_SOURCE_REMOVE;
}
static gboolean
msg_cb (GIOChannel * source, GIOCondition condition, gpointer data)
{
MSG msg;
if (!PeekMessage (&msg, NULL, 0, 0, PM_REMOVE))
return G_SOURCE_CONTINUE;
TranslateMessage (&msg);
DispatchMessage (&msg);
return G_SOURCE_CONTINUE;
}
static gpointer
gst_d3d11_window_win32_thread_func (gpointer data)
{
GstD3D11Window *window = GST_D3D11_WINDOW (data);
GstD3D11WindowWin32 *self = GST_D3D11_WINDOW_WIN32 (data);
GSource *source;
GST_DEBUG_OBJECT (self, "Enter loop");
g_main_context_push_thread_default (self->main_context);
window->initialized = gst_d3d11_window_win32_create_internal_window (self);
self->msg_io_channel =
g_io_channel_win32_new_messages ((guintptr) self->internal_hwnd);
self->msg_source = g_io_create_watch (self->msg_io_channel, G_IO_IN);
g_source_set_callback (self->msg_source, (GSourceFunc) msg_cb, self, NULL);
g_source_attach (self->msg_source, self->main_context);
source = g_idle_source_new ();
g_source_set_callback (source, (GSourceFunc) running_cb, self, NULL);
g_source_attach (source, self->main_context);
g_source_unref (source);
g_main_loop_run (self->loop);
gst_d3d11_window_win32_close_internal_window (self);
g_main_context_pop_thread_default (self->main_context);
GST_DEBUG_OBJECT (self, "Exit loop");
return NULL;
}
static void
gst_d3d11_window_win32_close_internal_window (GstD3D11WindowWin32 * self)
{
if (self->internal_hwnd) {
RemoveProp (self->internal_hwnd, D3D11_WINDOW_PROP_NAME);
ShowWindow (self->internal_hwnd, SW_HIDE);
SetParent (self->internal_hwnd, NULL);
if (!DestroyWindow (self->internal_hwnd))
GST_WARNING ("failed to destroy window %" G_GUINTPTR_FORMAT
", 0x%x", (guintptr) self->internal_hwnd, (guint) GetLastError ());
self->internal_hwnd = NULL;
}
if (self->msg_source) {
g_source_destroy (self->msg_source);
g_source_unref (self->msg_source);
self->msg_source = NULL;
}
if (self->msg_io_channel) {
g_io_channel_unref (self->msg_io_channel);
self->msg_io_channel = NULL;
}
}
static void
gst_d3d11_window_win32_set_external_handle (GstD3D11WindowWin32 * self)
{
WNDPROC external_window_proc;
external_window_proc =
(WNDPROC) GetWindowLongPtr (self->external_hwnd, GWLP_WNDPROC);
GST_DEBUG_OBJECT (self, "set external window %" G_GUINTPTR_FORMAT
", original window procedure %p", (guintptr) self->external_hwnd,
external_window_proc);
SetProp (self->external_hwnd, EXTERNAL_PROC_PROP_NAME,
(HANDLE) external_window_proc);
SetProp (self->external_hwnd, D3D11_WINDOW_PROP_NAME, self);
SetWindowLongPtr (self->external_hwnd, GWLP_WNDPROC,
(LONG_PTR) sub_class_proc);
/* Will create our internal window on parent window's thread */
SendMessage (self->external_hwnd, WM_GST_D3D11_CONSTRUCT_INTERNAL_WINDOW,
0, 0);
}
static void
gst_d3d11_window_win32_release_external_handle (GstD3D11WindowWin32 * self)
{
WNDPROC external_proc;
if (!self->external_hwnd)
return;
external_proc =
(WNDPROC) GetProp (self->external_hwnd, EXTERNAL_PROC_PROP_NAME);
if (!external_proc)
return;
GST_DEBUG_OBJECT (self, "release external window %" G_GUINTPTR_FORMAT
", original window procedure %p", (guintptr) self->external_hwnd,
external_proc);
if (!SetWindowLongPtr (self->external_hwnd,
GWLP_WNDPROC, (LONG_PTR) external_proc)) {
GST_WARNING_OBJECT (self, "Couldn't restore original window procedure");
}
RemoveProp (self->external_hwnd, EXTERNAL_PROC_PROP_NAME);
RemoveProp (self->external_hwnd, D3D11_WINDOW_PROP_NAME);
self->external_hwnd = NULL;
}
static gboolean
gst_d3d11_window_win32_create_internal_window (GstD3D11WindowWin32 * self)
{
WNDCLASSEX wc;
ATOM atom = 0;
HINSTANCE hinstance = GetModuleHandle (NULL);
GST_LOG_OBJECT (self, "Attempting to create a win32 window");
G_LOCK (create_lock);
atom = GetClassInfoEx (hinstance, "GSTD3D11", &wc);
if (atom == 0) {
GST_LOG_OBJECT (self, "Register internal window class");
ZeroMemory (&wc, sizeof (WNDCLASSEX));
wc.cbSize = sizeof (WNDCLASSEX);
wc.lpfnWndProc = window_proc;
wc.hInstance = hinstance;
wc.hIcon = LoadIcon (NULL, IDI_WINLOGO);
wc.style = CS_OWNDC | CS_HREDRAW | CS_VREDRAW;
wc.hCursor = LoadCursor (NULL, IDC_ARROW);
wc.hbrBackground = (HBRUSH) GetStockObject (BLACK_BRUSH);
wc.lpszClassName = "GSTD3D11";
atom = RegisterClassEx (&wc);
if (atom == 0) {
G_UNLOCK (create_lock);
GST_ERROR_OBJECT (self, "Failed to register window class 0x%x",
(unsigned int) GetLastError ());
return FALSE;
}
} else {
GST_LOG_OBJECT (self, "window class was already registered");
}
self->device_handle = 0;
self->internal_hwnd = 0;
self->visible = FALSE;
self->internal_hwnd = CreateWindowEx (0,
"GSTD3D11",
"Direct3D11 renderer",
WS_CLIPSIBLINGS | WS_CLIPCHILDREN | WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT, CW_USEDEFAULT,
0, 0, (HWND) NULL, (HMENU) NULL, hinstance, self);
G_UNLOCK (create_lock);
if (!self->internal_hwnd) {
GST_ERROR_OBJECT (self, "Failed to create d3d11 window");
return FALSE;
}
GST_DEBUG_OBJECT (self, "d3d11 window created: %" G_GUINTPTR_FORMAT,
(guintptr) self->internal_hwnd);
/* device_handle is set in the window_proc */
if (!self->device_handle) {
GST_ERROR_OBJECT (self, "device handle is not available");
return FALSE;
}
GST_LOG_OBJECT (self,
"Created a internal d3d11 window %p", self->internal_hwnd);
return TRUE;
}
/* always called from window thread */
static void
gst_d3d11_window_win32_change_fullscreen_mode_internal (GstD3D11WindowWin32 *
self)
{
GstD3D11Window *window = GST_D3D11_WINDOW (self);
HWND hwnd = self->external_hwnd ? self->external_hwnd : self->internal_hwnd;
if (!window->swap_chain)
return;
if (window->requested_fullscreen == window->fullscreen)
return;
GST_DEBUG_OBJECT (self, "Change mode to %s",
window->requested_fullscreen ? "fullscreen" : "windowed");
window->fullscreen = !window->fullscreen;
if (!window->fullscreen) {
/* Restore the window's attributes and size */
SetWindowLong (hwnd, GWL_STYLE, self->restore_style);
SetWindowPos (hwnd, HWND_NOTOPMOST,
self->restore_rect.left,
self->restore_rect.top,
self->restore_rect.right - self->restore_rect.left,
self->restore_rect.bottom - self->restore_rect.top,
SWP_FRAMECHANGED | SWP_NOACTIVATE);
ShowWindow (hwnd, SW_NORMAL);
} else {
IDXGIOutput *output;
DXGI_OUTPUT_DESC output_desc;
IDXGISwapChain *swap_chain = window->swap_chain;
/* show window before change style */
ShowWindow (hwnd, SW_SHOW);
/* Save the old window rect so we can restore it when exiting
* fullscreen mode */
GetWindowRect (hwnd, &self->restore_rect);
self->restore_style = GetWindowLong (hwnd, GWL_STYLE);
/* Make the window borderless so that the client area can fill the screen */
SetWindowLong (hwnd, GWL_STYLE,
self->restore_style &
~(WS_CAPTION | WS_MAXIMIZEBOX | WS_MINIMIZEBOX | WS_SYSMENU |
WS_THICKFRAME));
swap_chain->GetContainingOutput (&output);
output->GetDesc (&output_desc);
output->Release ();
SetWindowPos (hwnd, HWND_TOPMOST,
output_desc.DesktopCoordinates.left,
output_desc.DesktopCoordinates.top,
output_desc.DesktopCoordinates.right,
output_desc.DesktopCoordinates.bottom,
SWP_FRAMECHANGED | SWP_NOACTIVATE);
ShowWindow (hwnd, SW_MAXIMIZE);
}
GST_DEBUG_OBJECT (self, "Fullscreen mode change done");
}
static void
gst_d3d11_window_win32_on_key_event (GstD3D11WindowWin32 * self,
HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
GstD3D11Window *window = GST_D3D11_WINDOW (self);
gunichar2 wcrep[128];
const gchar *event;
if (!window->enable_navigation_events)
return;
if (GetKeyNameTextW (lParam, (LPWSTR) wcrep, 128)) {
gchar *utfrep = g_utf16_to_utf8 (wcrep, 128, NULL, NULL, NULL);
if (utfrep) {
if (uMsg == WM_KEYDOWN)
event = "key-press";
else
event = "key-release";
gst_d3d11_window_on_key_event (window, event, utfrep);
g_free (utfrep);
}
}
}
static void
gst_d3d11_window_win32_on_mouse_event (GstD3D11WindowWin32 * self,
HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
GstD3D11Window *window = GST_D3D11_WINDOW (self);
gint button;
const gchar *event = NULL;
if (!window->enable_navigation_events)
return;
/* FIXME: convert to render coordinate */
switch (uMsg) {
case WM_MOUSEMOVE:
button = 0;
event = "mouse-move";
break;
case WM_LBUTTONDOWN:
button = 1;
event = "mouse-button-press";
break;
case WM_LBUTTONUP:
button = 1;
event = "mouse-button-release";
break;
case WM_RBUTTONDOWN:
button = 2;
event = "mouse-button-press";
break;
case WM_RBUTTONUP:
button = 2;
event = "mouse-button-release";
break;
case WM_MBUTTONDOWN:
button = 3;
event = "mouse-button-press";
break;
case WM_MBUTTONUP:
button = 3;
event = "mouse-button-release";
break;
default:
break;
}
if (event)
gst_d3d11_window_on_mouse_event (window,
event, button, (gdouble) LOWORD (lParam), (gdouble) HIWORD (lParam));
}
static void
gst_d3d11_window_win32_handle_window_proc (GstD3D11WindowWin32 * self,
HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
GstD3D11Window *window = GST_D3D11_WINDOW (self);
switch (uMsg) {
case WM_SIZE:
gst_d3d11_window_win32_on_resize (window, 0, 0);
break;
case WM_CLOSE:
if (self->internal_hwnd) {
ShowWindow (self->internal_hwnd, SW_HIDE);
gst_d3d11_window_win32_close_internal_window (self);
}
break;
case WM_KEYDOWN:
case WM_KEYUP:
gst_d3d11_window_win32_on_key_event (self, hWnd, uMsg, wParam, lParam);
break;
case WM_LBUTTONDOWN:
case WM_LBUTTONUP:
case WM_RBUTTONDOWN:
case WM_RBUTTONUP:
case WM_MBUTTONDOWN:
case WM_MBUTTONUP:
case WM_MOUSEMOVE:
/* To handle mouse event only once, do this only for internal window */
if (self->internal_hwnd && self->internal_hwnd == hWnd)
gst_d3d11_window_win32_on_mouse_event (self, hWnd, uMsg, wParam,
lParam);
/* DefWindowProc will not chain up mouse event to parent window */
if (self->external_hwnd && self->external_hwnd != hWnd)
SendMessage (self->external_hwnd, uMsg, wParam, lParam);
break;
case WM_SYSKEYDOWN:
if ((window->fullscreen_toggle_mode &
GST_D3D11_WINDOW_FULLSCREEN_TOGGLE_MODE_ALT_ENTER)
== GST_D3D11_WINDOW_FULLSCREEN_TOGGLE_MODE_ALT_ENTER) {
WORD state = GetKeyState (VK_RETURN);
BYTE high = HIBYTE (state);
if (high & 0x1) {
window->requested_fullscreen = !window->fullscreen;
gst_d3d11_window_win32_change_fullscreen_mode_internal (self);
}
}
break;
case WM_GST_D3D11_FULLSCREEN:
if (g_atomic_int_get (&self->pending_fullscreen_count)) {
g_atomic_int_dec_and_test (&self->pending_fullscreen_count);
if ((window->fullscreen_toggle_mode &
GST_D3D11_WINDOW_FULLSCREEN_TOGGLE_MODE_PROPERTY)
== GST_D3D11_WINDOW_FULLSCREEN_TOGGLE_MODE_PROPERTY)
gst_d3d11_window_win32_change_fullscreen_mode_internal (self);
}
break;
default:
break;
}
return;
}
static LRESULT CALLBACK
window_proc (HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
GstD3D11WindowWin32 *self;
if (uMsg == WM_CREATE) {
self = GST_D3D11_WINDOW_WIN32 (((LPCREATESTRUCT) lParam)->lpCreateParams);
GST_LOG_OBJECT (self, "WM_CREATE");
self->device_handle = 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, self->device_handle);
SetProp (hWnd, D3D11_WINDOW_PROP_NAME, self);
} else if (GetProp (hWnd, D3D11_WINDOW_PROP_NAME)) {
HANDLE handle = GetProp (hWnd, D3D11_WINDOW_PROP_NAME);
if (!GST_IS_D3D11_WINDOW_WIN32 (handle)) {
GST_WARNING ("%p is not d3d11window object", handle);
goto done;
}
self = GST_D3D11_WINDOW_WIN32 (handle);
g_assert (self->internal_hwnd == hWnd);
gst_d3d11_window_win32_handle_window_proc (self, hWnd, uMsg, wParam,
lParam);
}
if (uMsg == WM_SIZE)
return 0;
done:
return DefWindowProc (hWnd, uMsg, wParam, lParam);
}
static LRESULT FAR PASCAL
sub_class_proc (HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
WNDPROC external_window_proc =
(WNDPROC) GetProp (hWnd, EXTERNAL_PROC_PROP_NAME);
GstD3D11WindowWin32 *self =
(GstD3D11WindowWin32 *) GetProp (hWnd, D3D11_WINDOW_PROP_NAME);
if (uMsg == WM_GST_D3D11_CONSTRUCT_INTERNAL_WINDOW) {
GstD3D11Window *window = GST_D3D11_WINDOW (self);
RECT rect;
GST_DEBUG_OBJECT (self, "Create internal window");
window->initialized = gst_d3d11_window_win32_create_internal_window (self);
SetWindowLongPtr (self->internal_hwnd, GWL_STYLE, WS_CHILD | WS_MAXIMIZE);
SetParent (self->internal_hwnd, self->external_hwnd);
/* take changes into account: SWP_FRAMECHANGED */
GetClientRect (self->external_hwnd, &rect);
SetWindowPos (self->internal_hwnd, HWND_TOP, rect.left, rect.top,
rect.right, rect.bottom,
SWP_ASYNCWINDOWPOS | SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER |
SWP_FRAMECHANGED | SWP_NOACTIVATE);
MoveWindow (self->internal_hwnd, rect.left, rect.top, rect.right,
rect.bottom, FALSE);
/* don't need to be chained up to parent window procedure,
* as this is our custom message */
return 0;
} else if (uMsg == WM_SIZE) {
MoveWindow (self->internal_hwnd, 0, 0, LOWORD (lParam), HIWORD (lParam),
FALSE);
} else if (uMsg == WM_CLOSE || uMsg == WM_DESTROY) {
g_mutex_lock (&self->lock);
GST_WARNING_OBJECT (self, "external window is closing");
gst_d3d11_window_win32_release_external_handle (self);
self->external_hwnd = NULL;
self->overlay_state = GST_D3D11_WINDOW_WIN32_OVERLAY_STATE_CLOSED;
g_mutex_unlock (&self->lock);
} else {
gst_d3d11_window_win32_handle_window_proc (self, hWnd, uMsg, wParam,
lParam);
}
return CallWindowProc (external_window_proc, hWnd, uMsg, wParam, lParam);
}
static void
gst_d3d11_window_win32_disable_alt_enter (GstD3D11WindowWin32 * self,
GstD3D11Device * device, IDXGISwapChain * swap_chain, HWND hwnd)
{
IDXGIFactory1 *factory = NULL;
HRESULT hr;
hr = swap_chain->GetParent (IID_IDXGIFactory1, (void **) &factory);
if (!gst_d3d11_result (hr, device) || !factory) {
GST_WARNING_OBJECT (self,
"Cannot get parent dxgi factory for swapchain %p, hr: 0x%x",
swap_chain, (guint) hr);
return;
}
hr = factory->MakeWindowAssociation (hwnd, DXGI_MWA_NO_ALT_ENTER);
if (!gst_d3d11_result (hr, device)) {
GST_WARNING_OBJECT (self,
"MakeWindowAssociation failure, hr: 0x%x", (guint) hr);
}
factory->Release ();
}
static IDXGISwapChain *
create_swap_chain (GstD3D11WindowWin32 * self, GstD3D11Device * device,
DXGI_SWAP_CHAIN_DESC * desc)
{
HRESULT hr;
IDXGISwapChain *swap_chain = NULL;
ID3D11Device *device_handle = gst_d3d11_device_get_device_handle (device);
IDXGIFactory1 *factory = gst_d3d11_device_get_dxgi_factory_handle (device);
gst_d3d11_device_lock (device);
hr = factory->CreateSwapChain ((IUnknown *) device_handle, desc, &swap_chain);
gst_d3d11_device_unlock (device);
if (!gst_d3d11_result (hr, device)) {
GST_WARNING_OBJECT (self, "Cannot create SwapChain Object: 0x%x",
(guint) hr);
swap_chain = NULL;
}
return swap_chain;
}
#if (GST_D3D11_DXGI_HEADER_VERSION >= 2)
static IDXGISwapChain1 *
create_swap_chain_for_hwnd (GstD3D11WindowWin32 * self, GstD3D11Device * device,
HWND hwnd, DXGI_SWAP_CHAIN_DESC1 * desc,
DXGI_SWAP_CHAIN_FULLSCREEN_DESC * fullscreen_desc, IDXGIOutput * output)
{
HRESULT hr;
IDXGISwapChain1 *swap_chain = NULL;
ID3D11Device *device_handle = gst_d3d11_device_get_device_handle (device);
IDXGIFactory1 *factory = gst_d3d11_device_get_dxgi_factory_handle (device);
IDXGIFactory2 *factory2 = NULL;
hr = factory->QueryInterface (IID_PPV_ARGS (&factory2));
if (!gst_d3d11_result (hr, device)) {
GST_WARNING_OBJECT (self, "IDXGIFactory2 interface is unavailable");
return NULL;
}
gst_d3d11_device_lock (device);
hr = factory2->CreateSwapChainForHwnd (
(IUnknown *) device_handle, hwnd, desc, fullscreen_desc,
output, &swap_chain);
gst_d3d11_device_unlock (device);
if (!gst_d3d11_result (hr, device)) {
GST_WARNING_OBJECT (self, "Cannot create SwapChain Object: 0x%x",
(guint) hr);
swap_chain = NULL;
}
factory2->Release ();
return swap_chain;
}
#endif
static gboolean
gst_d3d11_window_win32_create_swap_chain (GstD3D11Window * window,
DXGI_FORMAT format, guint width, guint height,
guint swapchain_flags, IDXGISwapChain ** swap_chain)
{
GstD3D11WindowWin32 *self = GST_D3D11_WINDOW_WIN32 (window);
DXGI_SWAP_CHAIN_DESC desc = { 0, };
IDXGISwapChain *new_swapchain = NULL;
GstD3D11Device *device = window->device;
self->have_swapchain1 = FALSE;
#if (GST_D3D11_DXGI_HEADER_VERSION >= 2)
{
DXGI_SWAP_CHAIN_DESC1 desc1 = { 0, };
desc1.Width = 0;
desc1.Height = 0;
desc1.Format = format;
/* FIXME: add support stereo */
desc1.Stereo = FALSE;
desc1.SampleDesc.Count = 1;
desc1.SampleDesc.Quality = 0;
desc1.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT;
desc1.BufferCount = 2;
desc1.Scaling = DXGI_SCALING_STRETCH;
/* scaling-stretch would break aspect-ratio so we prefer to use scaling-none,
* but Windows7 does not support this method */
if (gst_d3d11_is_windows_8_or_greater ())
desc1.Scaling = DXGI_SCALING_NONE;
desc1.SwapEffect = DXGI_SWAP_EFFECT_FLIP_SEQUENTIAL;
desc1.AlphaMode = DXGI_ALPHA_MODE_UNSPECIFIED;
desc1.Flags = swapchain_flags;
new_swapchain = (IDXGISwapChain *)
create_swap_chain_for_hwnd (self, device,
self->internal_hwnd, &desc1, NULL, NULL);
if (!new_swapchain) {
GST_WARNING_OBJECT (self, "Failed to create swapchain1");
} else {
self->have_swapchain1 = TRUE;
}
}
#endif
if (!new_swapchain) {
DXGI_SWAP_EFFECT swap_effect = DXGI_SWAP_EFFECT_DISCARD;
if (gst_d3d11_is_windows_8_or_greater ())
swap_effect = DXGI_SWAP_EFFECT_FLIP_SEQUENTIAL;
/* we will get client area at on_resize */
desc.BufferDesc.Width = 0;
desc.BufferDesc.Height = 0;
/* don't care refresh rate */
desc.BufferDesc.RefreshRate.Numerator = 0;
desc.BufferDesc.RefreshRate.Denominator = 1;
desc.BufferDesc.Format = format;
desc.BufferDesc.ScanlineOrdering = DXGI_MODE_SCANLINE_ORDER_UNSPECIFIED;
desc.BufferDesc.Scaling = DXGI_MODE_SCALING_UNSPECIFIED;
desc.SampleDesc.Count = 1;
desc.SampleDesc.Quality = 0;
desc.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT;
desc.BufferCount = 2;
desc.SwapEffect = swap_effect;
desc.OutputWindow = self->internal_hwnd;
desc.Windowed = TRUE;
desc.Flags = swapchain_flags;
new_swapchain = create_swap_chain (self, device, &desc);
}
if (!new_swapchain) {
GST_ERROR_OBJECT (self, "Cannot create swapchain");
return FALSE;
}
/* disable alt+enter here. It should be manually handled */
gst_d3d11_device_lock (device);
gst_d3d11_window_win32_disable_alt_enter (self,
device, new_swapchain, desc.OutputWindow);
gst_d3d11_device_unlock (device);
*swap_chain = new_swapchain;
return TRUE;
}
static void
gst_d3d11_window_win32_set_window_handle (GstD3D11WindowWin32 * self,
guintptr handle)
{
self->overlay_state = GST_D3D11_WINDOW_WIN32_OVERLAY_STATE_NONE;
self->external_hwnd = (HWND) handle;
gst_d3d11_window_win32_set_external_handle (self);
self->overlay_state = GST_D3D11_WINDOW_WIN32_OVERLAY_STATE_OPENED;
}
static void
gst_d3d11_window_win32_show (GstD3D11Window * window)
{
GstD3D11WindowWin32 *self = GST_D3D11_WINDOW_WIN32 (window);
gint width, height;
width = GST_VIDEO_INFO_WIDTH (&window->render_info);
height = GST_VIDEO_INFO_HEIGHT (&window->render_info);
if (!self->visible) {
/* if no parent the real size has to be set now because this has not been done
* when at window creation */
if (!self->external_hwnd) {
RECT rect;
GetClientRect (self->internal_hwnd, &rect);
width += 2 * GetSystemMetrics (SM_CXSIZEFRAME);
height +=
2 * GetSystemMetrics (SM_CYSIZEFRAME) +
GetSystemMetrics (SM_CYCAPTION);
MoveWindow (self->internal_hwnd, rect.left, rect.top, width,
height, FALSE);
}
ShowWindow (self->internal_hwnd, SW_SHOW);
self->visible = TRUE;
}
}
static GstFlowReturn
gst_d3d11_window_win32_present (GstD3D11Window * window, guint present_flags)
{
GstD3D11WindowWin32 *self = GST_D3D11_WINDOW_WIN32 (window);
HRESULT hr;
if ((!self->external_hwnd &&
self->overlay_state == GST_D3D11_WINDOW_WIN32_OVERLAY_STATE_CLOSED)
|| !self->internal_hwnd) {
GST_ERROR_OBJECT (self, "Output window was closed");
return GST_D3D11_WINDOW_FLOW_CLOSED;
}
#if (GST_D3D11_DXGI_HEADER_VERSION >= 2)
if (self->have_swapchain1) {
IDXGISwapChain1 *swap_chain1 = (IDXGISwapChain1 *) window->swap_chain;
DXGI_PRESENT_PARAMETERS present_params = { 0, };
/* the first present should not specify dirty-rect */
if (!window->first_present) {
present_params.DirtyRectsCount = 1;
present_params.pDirtyRects = &window->render_rect;
}
hr = swap_chain1->Present1 (0, present_flags, &present_params);
} else
#endif
{
hr = window->swap_chain->Present (0, present_flags);
}
if (!gst_d3d11_result (hr, window->device)) {
GST_WARNING_OBJECT (self, "Direct3D cannot present texture, hr: 0x%x",
(guint) hr);
}
return GST_FLOW_OK;
}
static void
gst_d3d11_window_win32_on_resize (GstD3D11Window * window,
guint width, guint height)
{
/* Set zero width and height here. dxgi will decide client area by itself */
GST_D3D11_WINDOW_CLASS (parent_class)->on_resize (window, 0, 0);
}
static void
gst_d3d11_window_win32_update_swap_chain (GstD3D11Window * window)
{
GstD3D11WindowWin32 *self = GST_D3D11_WINDOW_WIN32 (window);
if (self->internal_hwnd)
PostMessage (self->internal_hwnd, WM_SIZE, 0, 0);
return;
}
static void
gst_d3d11_window_win32_change_fullscreen_mode (GstD3D11Window * window)
{
GstD3D11WindowWin32 *self = GST_D3D11_WINDOW_WIN32 (window);
if (self->internal_hwnd) {
g_atomic_int_add (&self->pending_fullscreen_count, 1);
PostMessage (self->internal_hwnd, WM_GST_D3D11_FULLSCREEN, 0, 0);
}
}
GstD3D11Window *
gst_d3d11_window_win32_new (GstD3D11Device * device, guintptr handle)
{
GstD3D11Window *window;
g_return_val_if_fail (GST_IS_D3D11_DEVICE (device), NULL);
window = (GstD3D11Window *) g_object_new (GST_TYPE_D3D11_WINDOW_WIN32,
"d3d11device", device, "window-handle", handle, NULL);
if (!window->initialized) {
gst_object_unref (window);
return NULL;
}
g_object_ref_sink (window);
return window;
}