mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-09-08 13:18:52 +00:00
- most code taken from the Window subclasses - tested combinations: xEGL, GLX, Wayland+EGL, Cocoa (under GNUStep), WGL (Wine)
488 lines
14 KiB
C
488 lines
14 KiB
C
/*
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* GStreamer
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* Copyright (C) 2008 Julien Isorce <julien.isorce@gmail.com>
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* Copyright (C) 2012 Matthew Waters <ystreet00@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., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, 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_win32.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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#define GST_GL_WINDOW_WIN32_GET_PRIVATE(o) \
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(G_TYPE_INSTANCE_GET_PRIVATE((o), GST_GL_TYPE_WINDOW_WIN32, GstGLWindowWin32Private))
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enum
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{
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PROP_0
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};
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struct _GstGLWindowWin32Private
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{
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gint dummy;
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};
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#define GST_CAT_DEFAULT gst_gl_window_win32_debug
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GST_DEBUG_CATEGORY_STATIC (GST_CAT_DEFAULT);
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#define DEBUG_INIT \
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GST_DEBUG_CATEGORY_GET (GST_CAT_DEFAULT, "glwindow");
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#define gst_gl_window_win32_parent_class parent_class
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G_DEFINE_TYPE_WITH_CODE (GstGLWindowWin32, gst_gl_window_win32,
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GST_GL_TYPE_WINDOW, DEBUG_INIT);
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static void gst_gl_window_win32_set_window_handle (GstGLWindow * window,
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guintptr handle);
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static guintptr gst_gl_window_win32_get_display (GstGLWindow * window);
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static void gst_gl_window_win32_draw (GstGLWindow * window, guint width,
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guint height);
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static void gst_gl_window_win32_run (GstGLWindow * window);
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static void gst_gl_window_win32_quit (GstGLWindow * window);
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static void gst_gl_window_win32_send_message (GstGLWindow * window,
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GstGLWindowCB callback, gpointer data);
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static void
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gst_gl_window_win32_class_init (GstGLWindowWin32Class * klass)
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{
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GstGLWindowClass *window_class = (GstGLWindowClass *) klass;
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g_type_class_add_private (klass, sizeof (GstGLWindowWin32Private));
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window_class->set_window_handle =
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GST_DEBUG_FUNCPTR (gst_gl_window_win32_set_window_handle);
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window_class->draw_unlocked = GST_DEBUG_FUNCPTR (gst_gl_window_win32_draw);
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window_class->draw = GST_DEBUG_FUNCPTR (gst_gl_window_win32_draw);
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window_class->run = GST_DEBUG_FUNCPTR (gst_gl_window_win32_run);
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window_class->quit = GST_DEBUG_FUNCPTR (gst_gl_window_win32_quit);
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window_class->send_message =
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GST_DEBUG_FUNCPTR (gst_gl_window_win32_send_message);
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window_class->get_display =
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GST_DEBUG_FUNCPTR (gst_gl_window_win32_get_display);
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}
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static void
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gst_gl_window_win32_init (GstGLWindowWin32 * window)
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{
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window->priv = GST_GL_WINDOW_WIN32_GET_PRIVATE (window);
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gst_gl_window_set_need_lock (GST_GL_WINDOW (window), FALSE);
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}
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/* Must be called in the gl thread */
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GstGLWindowWin32 *
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gst_gl_window_win32_new (void)
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{
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GstGLWindowWin32 *window = g_object_new (GST_GL_TYPE_WINDOW_WIN32, NULL);
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return window;
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}
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gboolean
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gst_gl_window_win32_create_window (GstGLWindowWin32 * window_win32,
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GError ** error)
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{
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// GstGLWindowWin32 *window_win32 = GST_GL_WINDOW_WIN32 (window);
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WNDCLASSEX wc;
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ATOM atom = 0;
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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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GST_LOG ("Attempting to create a win32 window");
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x += 20;
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y += 20;
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atom = GetClassInfoEx (hinstance, "GSTGL", &wc);
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if (atom == 0) {
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ZeroMemory (&wc, sizeof (WNDCLASSEX));
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wc.cbSize = sizeof (WNDCLASSEX);
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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.hIconSm = NULL;
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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 = RegisterClassEx (&wc);
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if (atom == 0) {
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g_set_error (error, GST_GL_CONTEXT_ERROR, GST_GL_CONTEXT_ERROR_FAILED,
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"Failed to register window class 0x%x\n",
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(unsigned int) GetLastError ());
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goto failure;
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}
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}
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window_win32->internal_win_id = 0;
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window_win32->device = 0;
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window_win32->is_closed = FALSE;
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window_win32->visible = FALSE;
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window_win32->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, 0, 0, (HWND) NULL, (HMENU) NULL, hinstance, window_win32);
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if (!window_win32->internal_win_id) {
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g_set_error (error, GST_GL_CONTEXT_ERROR, GST_GL_CONTEXT_ERROR_FAILED,
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"failed to create gl window");
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goto failure;
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}
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GST_DEBUG ("gl window created: %" G_GUINTPTR_FORMAT,
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(guintptr) window_win32->internal_win_id);
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//device is set in the window_proc
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if (!window_win32->device) {
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g_set_error (error, GST_GL_CONTEXT_ERROR, GST_GL_CONTEXT_ERROR_FAILED,
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"failed to create device");
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goto failure;
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}
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ShowCursor (TRUE);
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GST_LOG ("Created a win32 window");
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return TRUE;
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failure:
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return FALSE;
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}
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static guintptr
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gst_gl_window_win32_get_display (GstGLWindow * window)
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{
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GstGLWindowWin32 *window_win32;
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window_win32 = GST_GL_WINDOW_WIN32 (window);
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return (guintptr) window_win32->device;
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}
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static void
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gst_gl_window_win32_set_window_handle (GstGLWindow * window, guintptr id)
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{
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GstGLWindowWin32 *window_win32;
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HWND parent_id;
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window_win32 = GST_GL_WINDOW_WIN32 (window);
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if (!window_win32->internal_win_id) {
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window_win32->parent_win_id = (HWND) id;
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return;
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}
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/* retrieve parent if previously set */
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parent_id = window_win32->parent_win_id;
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if (window_win32->visible) {
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ShowWindow (window_win32->internal_win_id, SW_HIDE);
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window_win32->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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GST_DEBUG ("release parent %" G_GUINTPTR_FORMAT, (guintptr) parent_id);
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g_return_if_fail (parent_proc);
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SetWindowLongPtr (parent_id, GWLP_WNDPROC, (LONG_PTR) parent_proc);
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SetParent (window_win32->internal_win_id, NULL);
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RemoveProp (parent_id, "gl_window_parent_proc");
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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, GWLP_WNDPROC);
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RECT rect;
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GST_DEBUG ("set parent %" G_GUINTPTR_FORMAT, id);
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SetProp ((HWND) id, "gl_window_id", window_win32->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, GWLP_WNDPROC, (LONG_PTR) sub_class_proc);
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SetWindowLongPtr (window_win32->internal_win_id, GWL_STYLE,
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WS_CHILD | WS_MAXIMIZE);
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SetParent (window_win32->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 (window_win32->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 (window_win32->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 (window_win32->internal_win_id, GWL_STYLE,
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WS_CLIPSIBLINGS | WS_CLIPCHILDREN | WS_OVERLAPPEDWINDOW);
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}
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window_win32->parent_win_id = (HWND) id;
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}
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/* Thread safe */
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static void
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gst_gl_window_win32_draw (GstGLWindow * window, guint width, guint height)
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{
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GstGLWindowWin32 *window_win32 = GST_GL_WINDOW_WIN32 (window);
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if (!window_win32->visible) {
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HWND parent_id = window_win32->parent_win_id;
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/* if no parent the real size has to be set now because this has not been done
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* when at window creation */
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if (!parent_id) {
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RECT rect;
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GetClientRect (window_win32->internal_win_id, &rect);
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width += 2 * GetSystemMetrics (SM_CXSIZEFRAME);
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height +=
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2 * GetSystemMetrics (SM_CYSIZEFRAME) +
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GetSystemMetrics (SM_CYCAPTION);
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MoveWindow (window_win32->internal_win_id, rect.left, rect.top, width,
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height, FALSE);
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}
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ShowWindowAsync (window_win32->internal_win_id, SW_SHOW);
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window_win32->visible = TRUE;
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}
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RedrawWindow (window_win32->internal_win_id, NULL, NULL,
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RDW_NOERASE | RDW_INTERNALPAINT | RDW_INVALIDATE);
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}
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static void
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gst_gl_window_win32_run (GstGLWindow * window)
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{
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gint bRet;
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MSG msg;
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GST_INFO ("begin message loop");
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while (TRUE) {
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bRet = GetMessage (&msg, NULL, 0, 0);
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if (bRet == 0)
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break;
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else if (bRet == -1) {
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GST_WARNING ("Failed to get message 0x%x",
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(unsigned int) GetLastError ());
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break;
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} else {
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GST_TRACE ("handle message");
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TranslateMessage (&msg);
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DispatchMessage (&msg);
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}
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}
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GST_INFO ("end message loop");
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}
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/* Thread safe */
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static void
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gst_gl_window_win32_quit (GstGLWindow * window)
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{
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GstGLWindowWin32 *window_win32;
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window_win32 = GST_GL_WINDOW_WIN32 (window);
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if (window_win32 && window_win32->internal_win_id) {
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LRESULT res =
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PostMessage (window_win32->internal_win_id, WM_GST_GL_WINDOW_QUIT,
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(WPARAM) 0, (LPARAM) 0);
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GST_DEBUG ("end loop requested");
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g_return_if_fail (SUCCEEDED (res));
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}
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}
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/* Thread safe */
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static void
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gst_gl_window_win32_send_message (GstGLWindow * window, GstGLWindowCB callback,
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gpointer data)
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{
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GstGLWindowWin32 *window_win32;
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window_win32 = GST_GL_WINDOW_WIN32 (window);
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if (window_win32) {
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LRESULT res =
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SendMessage (window_win32->internal_win_id, WM_GST_GL_WINDOW_CUSTOM,
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(WPARAM) data, (LPARAM) callback);
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g_return_if_fail (SUCCEEDED (res));
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}
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}
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/* PRIVATE */
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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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GstGLWindowWin32 *window_win32;
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if (uMsg == WM_CREATE) {
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window_win32 =
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GST_GL_WINDOW_WIN32 (((LPCREATESTRUCT) lParam)->lpCreateParams);
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GST_TRACE ("WM_CREATE");
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window_win32->device = GetDC (hWnd);
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/* Do this, otherwise we hang on exit. We can still use it (due to the
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* CS_OWNDC flag in the WindowClass) after we have Released.
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*/
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ReleaseDC (hWnd, window_win32->device);
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SetProp (hWnd, "gl_window", window_win32);
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return 0;
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} else if (GetProp (hWnd, "gl_window")) {
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GstGLWindow *window;
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GstGLContext *context;
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GstGLContextClass *context_class;
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window_win32 = GST_GL_WINDOW_WIN32 (GetProp (hWnd, "gl_window"));
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window = GST_GL_WINDOW (window_win32);
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context = gst_gl_window_get_context (window);
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context_class = GST_GL_CONTEXT_GET_CLASS (context);
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g_assert (window_win32->internal_win_id == hWnd);
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switch (uMsg) {
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case WM_SIZE:
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{
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if (window->resize) {
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window->resize (window->resize_data, LOWORD (lParam),
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HIWORD (lParam));
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}
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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 (window->draw) {
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PAINTSTRUCT ps;
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BeginPaint (hWnd, &ps);
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window->draw (window->draw_data);
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context_class->swap_buffers (context);
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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 (window_win32->internal_win_id, SW_HIDE);
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GST_TRACE ("WM_CLOSE");
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if (window->close)
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window->close (window->close_data);
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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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GST_TRACE ("WM_GST_GL_WINDOW_QUIT");
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parent_id = window_win32->parent_win_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, GWLP_WNDPROC, (LONG_PTR) parent_proc);
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SetParent (hWnd, NULL);
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RemoveProp (parent_id, "gl_window_parent_proc");
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}
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window_win32->is_closed = TRUE;
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RemoveProp (hWnd, "gl_window");
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if (window_win32->internal_win_id) {
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if (!DestroyWindow (window_win32->internal_win_id))
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GST_WARNING ("failed to destroy window %" G_GUINTPTR_FORMAT
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", 0x%x", (guintptr) hWnd, (unsigned int) GetLastError ());
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}
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PostQuitMessage (0);
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break;
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}
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case WM_CAPTURECHANGED:
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{
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GST_DEBUG ("WM_CAPTURECHANGED");
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if (window->draw)
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window->draw (window->draw_data);
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break;
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}
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case WM_GST_GL_WINDOW_CUSTOM:
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{
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if (!window_win32->is_closed) {
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GstGLWindowCB custom_cb = (GstGLWindowCB) lParam;
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custom_cb ((gpointer) wParam);
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}
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break;
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}
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case WM_ERASEBKGND:
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return TRUE;
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default:
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{
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/* transmit messages to the parrent (ex: mouse/keyboard input) */
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HWND parent_id = window_win32->parent_win_id;
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if (parent_id)
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PostMessage (parent_id, uMsg, wParam, lParam);
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return DefWindowProc (hWnd, uMsg, wParam, lParam);
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}
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}
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gst_object_unref (context);
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return 0;
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} else {
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return DefWindowProc (hWnd, uMsg, wParam, lParam);
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}
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}
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LRESULT FAR PASCAL
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sub_class_proc (HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
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{
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WNDPROC window_parent_proc = GetProp (hWnd, "gl_window_parent_proc");
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if (uMsg == WM_SIZE) {
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HWND gl_window_id = GetProp (hWnd, "gl_window_id");
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MoveWindow (gl_window_id, 0, 0, LOWORD (lParam), HIWORD (lParam), FALSE);
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}
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return CallWindowProc (window_parent_proc, hWnd, uMsg, wParam, lParam);
|
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}
|