mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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61a8f34442
In OpenGL 2.x for Embedded System, a lot of basic scene/draw functions have been removed. It means that everything is made using vertex and fragment shaders. I have also added a gstglwindow backend for winCE that uses EGL (Native Platform Graphics Intercace) (which is a full part of OpenGL ES specification). It remove the use of wgl/glx functions.
610 lines
16 KiB
C
610 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, LPARAM lParam);
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LRESULT FAR PASCAL sub_class_proc (HWND hWnd, UINT uMsg, WPARAM wParam, 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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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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{
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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)
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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->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 += 2 * GetSystemMetrics (SM_CYSIZEFRAME) + GetSystemMetrics (SM_CYCAPTION);
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priv->internal_win_id = CreateWindow (
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"GSTGL",
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"OpenGL renderer",
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WS_CLIPSIBLINGS | WS_CLIPCHILDREN | WS_OVERLAPPEDWINDOW, //WS_POPUP | WS_BORDER | WS_SYSMENU | WS_CAPTION
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x, y, width, height,
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(HWND) NULL,
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(HMENU) NULL,
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hinstance,
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window
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);
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if (!priv->internal_win_id)
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{
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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 = (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, rect.right, rect.bottom,
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SWP_ASYNCWINDOWPOS | SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER | SWP_FRAMECHANGED | SWP_NOACTIVATE);
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MoveWindow (priv->internal_win_id, rect.left, rect.top, rect.right, rect.bottom, FALSE);
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}
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void
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gst_gl_window_set_external_gl_context (GstGLWindow *window, guint64 context)
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{
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g_warning ("gst_gl_window_set_external_gl_context: not implemented\n");
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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, 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, 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, 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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{
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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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{
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if (bRet == -1)
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{
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g_error ("Failed to get message %x\r\n", GetLastError());
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running = FALSE;
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}
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else
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{
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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, gpointer data)
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{
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if (window)
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{
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GstGLWindowPrivate *priv = window->priv;
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LRESULT res = PostMessage(priv->internal_win_id, WM_GST_GL_WINDOW_QUIT, (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, gpointer data)
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{
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if (window)
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{
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GstGLWindowPrivate *priv = window->priv;
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LRESULT res = SendMessage (priv->internal_win_id, WM_GST_GL_WINDOW_CUSTOM, (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 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 = (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[] = { EGL_CONTEXT_CLIENT_VERSION, 2, EGL_NONE, EGL_NONE };
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EGLint attribList[] =
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{
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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, 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, 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, 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, EGLErrorString());
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priv->surface = eglCreateWindowSurface (priv->display, config, (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, priv->surface, hWnd, EGLErrorString());
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priv->gl_context = eglCreateContext (priv->display, config, EGL_NO_CONTEXT, 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, hWnd, EGLErrorString());
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ReleaseDC (hWnd, priv->display);
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if (!eglMakeCurrent (priv->display, priv->surface, priv->surface, priv->gl_context))
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g_debug ("failed to make opengl context current %d, %s\n", hWnd, EGLErrorString());
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}
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SetProp (hWnd, "gl_window", window);
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return 0;
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}
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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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{
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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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{
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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, (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, EGL_NO_CONTEXT))
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g_debug ("failed to make current null context %d, %s\n", priv->display, EGLErrorString());
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if (priv->gl_context)
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{
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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, EGLErrorString());
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priv->gl_context = NULL;
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}
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if (priv->surface)
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{
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if (!eglDestroySurface (priv->display, priv->surface))
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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";
|
|
}
|
|
}
|