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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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The external opengl context must be specify when creating our OpenGL context (glx) or just after (wgl). When calling glXCreateContext or wglShareLists, the external opengl context must not be current. Then our gl context can be current in the gl thread while the external gl context is current in an other thread. See tests/examples/clutter/cluttershare.c
616 lines
16 KiB
C
616 lines
16 KiB
C
/*
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* GStreamer
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* Copyright (C) 2009 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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#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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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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const gchar *EGLErrorString ();
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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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EGLNativeWindowType internal_win_id;
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EGLDisplay display;
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EGLSurface surface;
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EGLContext gl_context;
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EGLContext 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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GstGLWindow *window = GST_GL_WINDOW (object);
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GstGLWindowPrivate *priv = window->priv;
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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_base_init (gpointer g_class)
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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 %x\r\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, guint64 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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GstGLWindowClass *klass = GST_GL_WINDOW_GET_CLASS (window);
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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->display = 0;
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priv->surface = 0;
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priv->gl_context = 0;
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priv->external_gl_context = (EGLContext) 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 = CreateWindow ("GSTGL", "OpenGL renderer", WS_CLIPSIBLINGS | WS_CLIPCHILDREN | WS_OVERLAPPEDWINDOW, //WS_POPUP | WS_BORDER | WS_SYSMENU | WS_CAPTION
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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: %d\n", priv->internal_win_id);
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return NULL;
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}
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g_debug ("gl window created: %d\n", priv->internal_win_id);
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//display is set in the window_proc
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if (!priv->display) {
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g_object_unref (G_OBJECT (window));
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return NULL;
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}
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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, guint64 id)
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{
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GstGLWindowPrivate *priv = window->priv;
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WNDPROC window_parent_proc =
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(WNDPROC) (guint64) GetWindowLongPtr ((HWND) id, GWL_WNDPROC);
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RECT rect;
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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, (DWORD) (guint64) 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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}
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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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GstGLWindowPrivate *priv = window->priv;
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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 %x\r\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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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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EGLint majorVersion;
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EGLint minorVersion;
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EGLint numConfigs;
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EGLConfig config;
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EGLint contextAttribs[] =
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{ EGL_CONTEXT_CLIENT_VERSION, 2, EGL_NONE, EGL_NONE };
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EGLint attribList[] = {
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EGL_RED_SIZE, 5,
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EGL_GREEN_SIZE, 6,
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EGL_BLUE_SIZE, 5,
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EGL_ALPHA_SIZE, 8,
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EGL_DEPTH_SIZE, 8,
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EGL_STENCIL_SIZE, 8,
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EGL_SAMPLE_BUFFERS, EGL_DONT_CARE, //1
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EGL_NONE
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};
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GstGLWindowPrivate *priv = window->priv;
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priv->display = eglGetDisplay (GetDC (hWnd));
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if (priv->display != EGL_NO_DISPLAY)
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g_debug ("display retrieved: %d\n", priv->display);
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else
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g_debug ("failed to retrieve display %d, %s\n", hWnd,
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EGLErrorString ());
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if (eglInitialize (priv->display, &majorVersion, &minorVersion))
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g_debug ("egl initialized: %d.%d\n", majorVersion, minorVersion);
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else
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g_debug ("failed to initialize egl %d, %s\n", priv->display,
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EGLErrorString ());
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if (eglGetConfigs (priv->display, NULL, 0, &numConfigs))
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g_debug ("configs retrieved: %d\n", numConfigs);
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else
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g_debug ("failed to retrieve configs %d, %s\n", priv->display,
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EGLErrorString ());
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if (eglChooseConfig (priv->display, attribList, &config, 1, &numConfigs))
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g_debug ("config set: %d, %d\n", config, numConfigs);
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else
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g_debug ("failed to set config %d, %s\n", priv->display,
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EGLErrorString ());
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priv->surface =
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eglCreateWindowSurface (priv->display, config,
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(EGLNativeWindowType) hWnd, NULL);
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if (priv->surface != EGL_NO_SURFACE)
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g_debug ("surface created: %d\n", priv->surface);
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else
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g_debug ("failed to create surface %d, %d, %d, %s\n", priv->display,
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priv->surface, hWnd, EGLErrorString ());
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priv->gl_context =
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eglCreateContext (priv->display, config, priv->external_gl_context,
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contextAttribs);
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if (priv->gl_context != EGL_NO_CONTEXT)
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g_debug ("gl context created: %d\n", priv->gl_context);
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else
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g_debug ("failed to create glcontext %d, %d, %s\n", priv->gl_context,
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hWnd, EGLErrorString ());
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ReleaseDC (hWnd, priv->display);
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if (!eglMakeCurrent (priv->display, priv->surface, priv->surface,
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priv->gl_context))
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g_debug ("failed to make opengl context current %d, %s\n", hWnd,
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EGLErrorString ());
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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 == eglGetCurrentContext ());
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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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priv->draw_cb (priv->draw_data);
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eglSwapBuffers (priv->display, priv->surface);
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ValidateRect (hWnd, NULL);
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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);
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SetWindowLongPtr (parent_id, GWL_WNDPROC,
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(LONG) (guint64) parent_proc);
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SetParent (hWnd, NULL);
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RemoveProp (parent_id, "gl_window_parent_proc");
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RemoveProp (hWnd, "gl_window_parent_id");
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}
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priv->is_closed = TRUE;
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RemoveProp (hWnd, "gl_window");
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if (!eglMakeCurrent (priv->display, priv->surface, priv->surface,
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EGL_NO_CONTEXT))
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g_debug ("failed to make current null context %d, %s\n",
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priv->display, EGLErrorString ());
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if (priv->gl_context) {
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if (!eglDestroyContext (priv->display, priv->gl_context))
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g_debug ("failed to destroy context %d, %s\n", priv->gl_context,
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EGLErrorString ());
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priv->gl_context = NULL;
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}
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if (priv->surface) {
|
|
if (!eglDestroySurface (priv->display, priv->surface))
|
|
g_debug ("failed to destroy surface %d, %s\n", priv->surface,
|
|
EGLErrorString ());
|
|
priv->surface = NULL;
|
|
}
|
|
|
|
if (priv->surface) {
|
|
if (!eglTerminate (priv->display))
|
|
g_debug ("failed to terminate display %d, %s\n", priv->display,
|
|
EGLErrorString ());
|
|
priv->surface = NULL;
|
|
}
|
|
|
|
if (priv->internal_win_id) {
|
|
if (!DestroyWindow (priv->internal_win_id))
|
|
g_debug ("failed to destroy window %d, 0x%x\n", 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);
|
|
}
|
|
|
|
const gchar *
|
|
EGLErrorString ()
|
|
{
|
|
EGLint nErr = eglGetError ();
|
|
switch (nErr) {
|
|
case EGL_SUCCESS:
|
|
return "EGL_SUCCESS";
|
|
case EGL_BAD_DISPLAY:
|
|
return "EGL_BAD_DISPLAY";
|
|
case EGL_NOT_INITIALIZED:
|
|
return "EGL_NOT_INITIALIZED";
|
|
case EGL_BAD_ACCESS:
|
|
return "EGL_BAD_ACCESS";
|
|
case EGL_BAD_ALLOC:
|
|
return "EGL_BAD_ALLOC";
|
|
case EGL_BAD_ATTRIBUTE:
|
|
return "EGL_BAD_ATTRIBUTE";
|
|
case EGL_BAD_CONFIG:
|
|
return "EGL_BAD_CONFIG";
|
|
case EGL_BAD_CONTEXT:
|
|
return "EGL_BAD_CONTEXT";
|
|
case EGL_BAD_CURRENT_SURFACE:
|
|
return "EGL_BAD_CURRENT_SURFACE";
|
|
case EGL_BAD_MATCH:
|
|
return "EGL_BAD_MATCH";
|
|
case EGL_BAD_NATIVE_PIXMAP:
|
|
return "EGL_BAD_NATIVE_PIXMAP";
|
|
case EGL_BAD_NATIVE_WINDOW:
|
|
return "EGL_BAD_NATIVE_WINDOW";
|
|
case EGL_BAD_PARAMETER:
|
|
return "EGL_BAD_PARAMETER";
|
|
case EGL_BAD_SURFACE:
|
|
return "EGL_BAD_SURFACE";
|
|
default:
|
|
return "unknown";
|
|
}
|
|
}
|