mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-20 07:16:55 +00:00
ca1a2d33ca
Fixes bug #584877 Before this commit calling "gst_x_overlay_set_xwindow_id" more than one time, had no effect. It mainly affects the glimagesink implementation. But on win32 (and CE), some stuff has to be done to release the old parent. And add a switchxoverlay example where the user can click on left/right part of the main window to switch the xoverlay.
588 lines
15 KiB
C
588 lines
15 KiB
C
/*
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* GStreamer
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* Copyright (C) 2008 Julien Isorce <julien.isorce@gmail.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., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, 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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#undef UNICODE
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#include <windows.h>
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#define UNICODE
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#include "gstglwindow.h"
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#define WM_GST_GL_WINDOW_CUSTOM (WM_APP+1)
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#define WM_GST_GL_WINDOW_QUIT (WM_APP+2)
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void gst_gl_window_set_pixel_format (GstGLWindow * window);
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LRESULT CALLBACK window_proc (HWND hWnd, UINT uMsg, WPARAM wParam,
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LPARAM lParam);
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LRESULT FAR PASCAL sub_class_proc (HWND hWnd, UINT uMsg, WPARAM wParam,
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LPARAM lParam);
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#define GST_GL_WINDOW_GET_PRIVATE(o) \
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(G_TYPE_INSTANCE_GET_PRIVATE((o), GST_GL_TYPE_WINDOW, GstGLWindowPrivate))
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enum
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{
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PROP_0
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};
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struct _GstGLWindowPrivate
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{
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HWND internal_win_id;
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HDC device;
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HGLRC gl_context;
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HGLRC external_gl_context;
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GstGLWindowCB draw_cb;
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gpointer draw_data;
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GstGLWindowCB2 resize_cb;
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gpointer resize_data;
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GstGLWindowCB close_cb;
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gpointer close_data;
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gboolean is_closed;
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gboolean visible;
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};
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G_DEFINE_TYPE (GstGLWindow, gst_gl_window, G_TYPE_OBJECT);
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#undef G_LOG_DOMAIN
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#define G_LOG_DOMAIN "GstGLWindow"
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gboolean _gst_gl_window_debug = FALSE;
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HHOOK hHook;
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/* Must be called in the gl thread */
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static void
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gst_gl_window_finalize (GObject * object)
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{
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G_OBJECT_CLASS (gst_gl_window_parent_class)->finalize (object);
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}
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static void
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gst_gl_window_log_handler (const gchar * domain, GLogLevelFlags flags,
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const gchar * message, gpointer user_data)
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{
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if (_gst_gl_window_debug) {
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g_log_default_handler (domain, flags, message, user_data);
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}
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}
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static void
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gst_gl_window_class_init (GstGLWindowClass * klass)
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{
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GObjectClass *obj_class = G_OBJECT_CLASS (klass);
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WNDCLASS wc;
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ATOM atom = 0;
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HINSTANCE hinstance = GetModuleHandle (NULL);
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g_type_class_add_private (klass, sizeof (GstGLWindowPrivate));
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obj_class->finalize = gst_gl_window_finalize;
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atom = GetClassInfo (hinstance, "GSTGL", &wc);
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if (atom == 0) {
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ZeroMemory (&wc, sizeof (WNDCLASS));
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wc.lpfnWndProc = window_proc;
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wc.cbClsExtra = 0;
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wc.cbWndExtra = 0;
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wc.hInstance = hinstance;
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wc.hIcon = LoadIcon (NULL, IDI_WINLOGO);
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wc.style = CS_OWNDC | CS_HREDRAW | CS_VREDRAW;
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wc.hCursor = LoadCursor (NULL, IDC_ARROW);
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wc.hbrBackground = (HBRUSH) GetStockObject (BLACK_BRUSH);
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wc.lpszMenuName = NULL;
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wc.lpszClassName = "GSTGL";
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atom = RegisterClass (&wc);
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if (atom == 0)
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g_error ("Failed to register window class %lud\n", GetLastError ());
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}
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}
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static void
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gst_gl_window_init (GstGLWindow * window)
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{
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window->priv = GST_GL_WINDOW_GET_PRIVATE (window);
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if (g_getenv ("GST_GL_WINDOW_DEBUG") != NULL)
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_gst_gl_window_debug = TRUE;
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g_log_set_handler ("GstGLWindow", G_LOG_LEVEL_DEBUG,
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gst_gl_window_log_handler, NULL);
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}
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/* Must be called in the gl thread */
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GstGLWindow *
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gst_gl_window_new (gint width, gint height, DWORD_PTR external_gl_context)
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{
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GstGLWindow *window = g_object_new (GST_GL_TYPE_WINDOW, NULL);
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GstGLWindowPrivate *priv = window->priv;
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HINSTANCE hinstance = GetModuleHandle (NULL);
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static gint x = 0;
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static gint y = 0;
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x += 20;
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y += 20;
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priv->internal_win_id = 0;
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priv->device = 0;
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priv->gl_context = 0;
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priv->external_gl_context = (HGLRC) external_gl_context;
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priv->draw_cb = NULL;
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priv->draw_data = NULL;
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priv->resize_cb = NULL;
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priv->resize_data = NULL;
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priv->close_cb = NULL;
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priv->close_data = NULL;
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priv->is_closed = FALSE;
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priv->visible = FALSE;
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width += 2 * GetSystemMetrics (SM_CXSIZEFRAME);
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height +=
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2 * GetSystemMetrics (SM_CYSIZEFRAME) + GetSystemMetrics (SM_CYCAPTION);
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priv->internal_win_id = CreateWindowEx (0,
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"GSTGL",
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"OpenGL renderer",
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WS_CLIPSIBLINGS | WS_CLIPCHILDREN | WS_OVERLAPPEDWINDOW,
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x, y, width, height, (HWND) NULL, (HMENU) NULL, hinstance, window);
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if (!priv->internal_win_id) {
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g_debug ("failed to create gl window: %lud\n", (gulong) priv->internal_win_id);
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return NULL;
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}
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g_debug ("gl window created: %lud\n", (gulong) priv->internal_win_id);
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//device is set in the window_proc
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g_assert (priv->device);
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ShowCursor (TRUE);
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return window;
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}
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GQuark
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gst_gl_window_error_quark (void)
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{
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return g_quark_from_static_string ("gst-gl-window-error");
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}
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void
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gst_gl_window_set_external_window_id (GstGLWindow * window, gulong id)
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{
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GstGLWindowPrivate *priv = window->priv;
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//retrieve parent if previously set
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HWND parent_id = GetProp (priv->internal_win_id, "gl_window_parent_id");
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if (priv->visible) {
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ShowWindow (priv->internal_win_id, SW_HIDE);
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priv->visible = FALSE;
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}
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if (parent_id) {
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WNDPROC parent_proc = GetProp (parent_id, "gl_window_parent_proc");
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g_debug ("release parent %lud\n", (gulong) parent_id);
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g_assert (parent_proc);
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SetWindowLongPtr (parent_id, GWL_WNDPROC, (LONG) parent_proc);
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SetParent (priv->internal_win_id, NULL);
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RemoveProp (parent_id, "gl_window_parent_proc");
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RemoveProp (priv->internal_win_id, "gl_window_parent_id");
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}
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//not 0
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if (id) {
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WNDPROC window_parent_proc =
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(WNDPROC) GetWindowLongPtr ((HWND) id, GWL_WNDPROC);
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RECT rect;
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g_debug ("set parent %lud\n", (gulong) id);
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SetProp (priv->internal_win_id, "gl_window_parent_id", (HWND) id);
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SetProp ((HWND) id, "gl_window_id", priv->internal_win_id);
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SetProp ((HWND) id, "gl_window_parent_proc", (WNDPROC) window_parent_proc);
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SetWindowLongPtr ((HWND) id, GWL_WNDPROC, (LONG_PTR) sub_class_proc);
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SetWindowLongPtr (priv->internal_win_id, GWL_STYLE, WS_CHILD | WS_MAXIMIZE);
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SetParent (priv->internal_win_id, (HWND) id);
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//take changes into account: SWP_FRAMECHANGED
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GetClientRect ((HWND) id, &rect);
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SetWindowPos (priv->internal_win_id, HWND_TOP, rect.left, rect.top,
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rect.right, rect.bottom,
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SWP_ASYNCWINDOWPOS | SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER |
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SWP_FRAMECHANGED | SWP_NOACTIVATE);
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MoveWindow (priv->internal_win_id, rect.left, rect.top, rect.right,
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rect.bottom, FALSE);
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} else {
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//no parent so the internal window needs borders and system menu
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SetWindowLongPtr (priv->internal_win_id, GWL_STYLE,
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WS_CLIPSIBLINGS | WS_CLIPCHILDREN | WS_OVERLAPPEDWINDOW);
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}
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}
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/* Must be called in the gl thread */
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void
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gst_gl_window_set_draw_callback (GstGLWindow * window, GstGLWindowCB callback,
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gpointer data)
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{
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GstGLWindowPrivate *priv = window->priv;
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priv->draw_cb = callback;
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priv->draw_data = data;
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}
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/* Must be called in the gl thread */
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void
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gst_gl_window_set_resize_callback (GstGLWindow * window,
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GstGLWindowCB2 callback, gpointer data)
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{
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GstGLWindowPrivate *priv = window->priv;
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priv->resize_cb = callback;
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priv->resize_data = data;
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}
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/* Must be called in the gl thread */
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void
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gst_gl_window_set_close_callback (GstGLWindow * window, GstGLWindowCB callback,
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gpointer data)
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{
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GstGLWindowPrivate *priv = window->priv;
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priv->close_cb = callback;
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priv->close_data = data;
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}
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void
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gst_gl_window_draw_unlocked (GstGLWindow * window)
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{
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gst_gl_window_draw (window);
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}
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/* Thread safe */
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void
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gst_gl_window_draw (GstGLWindow * window)
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{
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GstGLWindowPrivate *priv = window->priv;
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if (!priv->visible) {
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ShowWindowAsync (priv->internal_win_id, SW_SHOW);
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priv->visible = TRUE;
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}
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RedrawWindow (priv->internal_win_id, NULL, NULL,
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RDW_NOERASE | RDW_INTERNALPAINT | RDW_INVALIDATE);
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}
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void
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gst_gl_window_run_loop (GstGLWindow * window)
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{
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gboolean running = TRUE;
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gboolean bRet = FALSE;
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MSG msg;
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g_debug ("begin loop\n");
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while (running && (bRet = GetMessage (&msg, NULL, 0, 0)) != 0) {
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if (bRet == -1) {
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g_error ("Failed to get message %lud\n", GetLastError ());
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running = FALSE;
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} else {
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TranslateMessage (&msg);
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DispatchMessage (&msg);
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}
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}
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g_debug ("end loop\n");
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}
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/* Thread safe */
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void
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gst_gl_window_quit_loop (GstGLWindow * window, GstGLWindowCB callback,
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gpointer data)
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{
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if (window) {
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GstGLWindowPrivate *priv = window->priv;
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LRESULT res = PostMessage (priv->internal_win_id, WM_GST_GL_WINDOW_QUIT,
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(WPARAM) data, (LPARAM) callback);
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g_assert (SUCCEEDED (res));
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g_debug ("end loop requested\n");
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}
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}
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/* Thread safe */
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void
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gst_gl_window_send_message (GstGLWindow * window, GstGLWindowCB callback,
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gpointer data)
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{
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if (window) {
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GstGLWindowPrivate *priv = window->priv;
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LRESULT res = SendMessage (priv->internal_win_id, WM_GST_GL_WINDOW_CUSTOM,
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(WPARAM) data, (LPARAM) callback);
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g_assert (SUCCEEDED (res));
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}
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}
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/* PRIVATE */
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void
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gst_gl_window_set_pixel_format (GstGLWindow * window)
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{
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GstGLWindowPrivate *priv = window->priv;
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PIXELFORMATDESCRIPTOR pfd;
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gint pixelformat = 0;
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gboolean res = FALSE;
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pfd.nSize = sizeof (PIXELFORMATDESCRIPTOR);
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pfd.nVersion = 1;
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pfd.dwFlags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER;
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pfd.iPixelType = PFD_TYPE_RGBA;
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pfd.cColorBits = 24;
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pfd.cRedBits = 0;
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pfd.cRedShift = 0;
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pfd.cGreenBits = 0;
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pfd.cGreenShift = 0;
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pfd.cBlueBits = 0;
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pfd.cBlueShift = 0;
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pfd.cAlphaBits = 0;
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pfd.cAlphaShift = 0;
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pfd.cAccumBits = 0;
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pfd.cAccumRedBits = 0;
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pfd.cAccumGreenBits = 0;
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pfd.cAccumBlueBits = 0;
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pfd.cAccumAlphaBits = 0;
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pfd.cDepthBits = 32;
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pfd.cStencilBits = 8;
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pfd.cAuxBuffers = 0;
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pfd.iLayerType = PFD_MAIN_PLANE;
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pfd.bReserved = 0;
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pfd.dwLayerMask = 0;
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pfd.dwVisibleMask = 0;
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pfd.dwDamageMask = 0;
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pfd.cColorBits = (BYTE) GetDeviceCaps (priv->device, BITSPIXEL);
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pixelformat = ChoosePixelFormat (priv->device, &pfd);
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g_assert (pixelformat);
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res = SetPixelFormat (priv->device, pixelformat, &pfd);
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g_assert (res);
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}
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LRESULT CALLBACK
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window_proc (HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
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{
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if (uMsg == WM_CREATE) {
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GstGLWindow *window =
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(GstGLWindow *) (((LPCREATESTRUCT) lParam)->lpCreateParams);
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g_debug ("WM_CREATE\n");
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g_assert (window);
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{
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GstGLWindowPrivate *priv = window->priv;
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priv->device = GetDC (hWnd);
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gst_gl_window_set_pixel_format (window);
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priv->gl_context = wglCreateContext (priv->device);
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if (priv->gl_context)
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g_debug ("gl context created: %lud\n", (gulong) priv->gl_context);
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else
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g_debug ("failed to create glcontext %lud, %lud\n", (gulong) hWnd,
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GetLastError ());
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g_assert (priv->gl_context);
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ReleaseDC (hWnd, priv->device);
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if (!wglMakeCurrent (priv->device, priv->gl_context))
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g_debug ("failed to make opengl context current %lud, %lud\n", (gulong) hWnd,
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GetLastError ());
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if (priv->external_gl_context) {
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if (!wglShareLists (priv->gl_context, priv->external_gl_context))
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g_debug ("failed to share opengl context %lud with %lud\n",
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(gulong) priv->gl_context, (gulong) priv->external_gl_context);
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else
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g_debug ("share opengl context succeed %lud\n", (gulong) priv->external_gl_context);
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}
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}
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SetProp (hWnd, "gl_window", window);
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return 0;
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} else if (GetProp (hWnd, "gl_window")) {
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GstGLWindow *window = GetProp (hWnd, "gl_window");
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GstGLWindowPrivate *priv = NULL;
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g_assert (window);
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priv = window->priv;
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g_assert (priv);
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g_assert (priv->internal_win_id == hWnd);
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g_assert (priv->gl_context == wglGetCurrentContext ());
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switch (uMsg) {
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case WM_SIZE:
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{
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if (priv->resize_cb)
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priv->resize_cb (priv->resize_data, LOWORD (lParam), HIWORD (lParam));
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break;
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}
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case WM_PAINT:
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{
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if (priv->draw_cb) {
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PAINTSTRUCT ps;
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BeginPaint (hWnd, &ps);
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priv->draw_cb (priv->draw_data);
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SwapBuffers (priv->device);
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EndPaint (hWnd, &ps);
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}
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break;
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}
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case WM_CLOSE:
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{
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ShowWindowAsync (priv->internal_win_id, SW_HIDE);
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if (priv->close_cb)
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priv->close_cb (priv->close_data);
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priv->draw_cb = NULL;
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priv->draw_data = NULL;
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priv->resize_cb = NULL;
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priv->resize_data = NULL;
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priv->close_cb = NULL;
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priv->close_data = NULL;
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break;
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}
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case WM_GST_GL_WINDOW_QUIT:
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{
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HWND parent_id = 0;
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GstGLWindowCB destroy_cb = (GstGLWindowCB) lParam;
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g_debug ("WM_CLOSE\n");
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destroy_cb ((gpointer) wParam);
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parent_id = GetProp (hWnd, "gl_window_parent_id");
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if (parent_id) {
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WNDPROC parent_proc = GetProp (parent_id, "gl_window_parent_proc");
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g_assert (parent_proc);
|
|
|
|
SetWindowLongPtr (parent_id, GWL_WNDPROC,
|
|
(LONG) parent_proc);
|
|
SetParent (hWnd, NULL);
|
|
|
|
RemoveProp (parent_id, "gl_window_parent_proc");
|
|
RemoveProp (hWnd, "gl_window_parent_id");
|
|
}
|
|
|
|
priv->is_closed = TRUE;
|
|
RemoveProp (hWnd, "gl_window");
|
|
|
|
if (!wglMakeCurrent (NULL, NULL))
|
|
g_debug ("failed to make current %lud, %lud\n", (gulong) hWnd, GetLastError ());
|
|
|
|
if (priv->gl_context) {
|
|
if (!wglDeleteContext (priv->gl_context))
|
|
g_debug ("failed to destroy context %lud, %lud\n", (gulong) priv->gl_context,
|
|
GetLastError ());
|
|
}
|
|
|
|
if (priv->internal_win_id) {
|
|
if (!DestroyWindow (priv->internal_win_id))
|
|
g_debug ("failed to destroy window %lud, %lud\n", (gulong) hWnd,
|
|
GetLastError ());
|
|
}
|
|
|
|
PostQuitMessage (0);
|
|
break;
|
|
}
|
|
|
|
case WM_CAPTURECHANGED:
|
|
{
|
|
g_debug ("WM_CAPTURECHANGED\n");
|
|
if (priv->draw_cb)
|
|
priv->draw_cb (priv->draw_data);
|
|
break;
|
|
}
|
|
|
|
case WM_GST_GL_WINDOW_CUSTOM:
|
|
{
|
|
if (!priv->is_closed) {
|
|
GstGLWindowCB custom_cb = (GstGLWindowCB) lParam;
|
|
custom_cb ((gpointer) wParam);
|
|
}
|
|
break;
|
|
}
|
|
|
|
case WM_ERASEBKGND:
|
|
return TRUE;
|
|
|
|
default:
|
|
{
|
|
/* transmit messages to the parrent (ex: mouse/keyboard input) */
|
|
HWND parent_id = GetProp (hWnd, "gl_window_parent_id");
|
|
if (parent_id)
|
|
PostMessage (parent_id, uMsg, wParam, lParam);
|
|
return DefWindowProc (hWnd, uMsg, wParam, lParam);
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
} else
|
|
return DefWindowProc (hWnd, uMsg, wParam, lParam);
|
|
}
|
|
|
|
LRESULT FAR PASCAL
|
|
sub_class_proc (HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
|
|
{
|
|
WNDPROC window_parent_proc = GetProp (hWnd, "gl_window_parent_proc");
|
|
|
|
if (uMsg == WM_SIZE) {
|
|
HWND gl_window_id = GetProp (hWnd, "gl_window_id");
|
|
MoveWindow (gl_window_id, 0, 0, LOWORD (lParam), HIWORD (lParam), FALSE);
|
|
}
|
|
|
|
return CallWindowProc (window_parent_proc, hWnd, uMsg, wParam, lParam);
|
|
}
|