mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-10-20 01:13:47 +00:00
47fd4d391e
This simplifies the code a lot without any functional changes apart from not closing the display connection. Closing the display connection is not safe to do as it is shared between all other code in the same process and no reference counting or anything happens at the platform layer.
253 lines
8.6 KiB
C++
253 lines
8.6 KiB
C++
/*
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* GStreamer
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* Copyright (C) 2016 Freescale Semiconductor, Inc. All rights reserved.
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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 "gstqtglutility.h"
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#include <QtGui/QGuiApplication>
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#if GST_GL_HAVE_WINDOW_X11 && defined (HAVE_QT_X11)
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#include <QX11Info>
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#include <gst/gl/x11/gstgldisplay_x11.h>
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#if GST_GL_HAVE_PLATFORM_GLX
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#include <gst/gl/x11/gstglcontext_glx.h>
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#elif GST_GL_HAVE_PLATFORM_EGL
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#include <gst/gl/egl/gstglcontext_egl.h>
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#endif
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#endif
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#if GST_GL_HAVE_WINDOW_WAYLAND && GST_GL_HAVE_PLATFORM_EGL && defined (HAVE_QT_WAYLAND)
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#include <qpa/qplatformnativeinterface.h>
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#include <gst/gl/wayland/gstgldisplay_wayland.h>
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#endif
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#if GST_GL_HAVE_PLATFORM_EGL && defined (HAVE_QT_EGLFS)
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#if GST_GL_HAVE_WINDOW_VIV_FB
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#include <qpa/qplatformnativeinterface.h>
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#include <gst/gl/viv-fb/gstgldisplay_viv_fb.h>
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#else
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#include <gst/gl/egl/gstegl.h>
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#include <gst/gl/egl/gstgldisplay_egl.h>
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#endif
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#include <gst/gl/egl/gstglcontext_egl.h>
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#endif
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#if GST_GL_HAVE_WINDOW_COCOA && GST_GL_HAVE_PLATFORM_CGL && defined (HAVE_QT_MAC)
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#include <gst/gl/cocoa/gstgldisplay_cocoa.h>
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#endif
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#define GST_CAT_DEFAULT qt_gl_utils_debug
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GST_DEBUG_CATEGORY_STATIC (GST_CAT_DEFAULT);
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GstGLDisplay *
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gst_qt_get_gl_display ()
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{
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GstGLDisplay *display = NULL;
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QGuiApplication *app = static_cast<QGuiApplication *> (QCoreApplication::instance ());
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static volatile gsize _debug;
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g_assert (app != NULL);
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if (g_once_init_enter (&_debug)) {
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GST_DEBUG_CATEGORY_INIT (GST_CAT_DEFAULT, "qtglutility", 0,
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"Qt gl utility functions");
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g_once_init_leave (&_debug, 1);
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}
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GST_INFO ("QGuiApplication::instance()->platformName() %s", app->platformName().toUtf8().data());
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#if GST_GL_HAVE_WINDOW_X11 && defined (HAVE_QT_X11)
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if (QString::fromUtf8 ("xcb") == app->platformName())
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display = (GstGLDisplay *)
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gst_gl_display_x11_new_with_display (QX11Info::display ());
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#endif
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#if GST_GL_HAVE_WINDOW_WAYLAND && GST_GL_HAVE_PLATFORM_EGL && defined (HAVE_QT_WAYLAND)
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if (QString::fromUtf8 ("wayland") == app->platformName()
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|| QString::fromUtf8 ("wayland-egl") == app->platformName()){
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struct wl_display * wayland_display;
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QPlatformNativeInterface *native =
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QGuiApplication::platformNativeInterface();
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wayland_display = (struct wl_display *)
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native->nativeResourceForWindow("display", NULL);
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display = (GstGLDisplay *)
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gst_gl_display_wayland_new_with_display (wayland_display);
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}
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#endif
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#if GST_GL_HAVE_PLATFORM_EGL && GST_GL_HAVE_WINDOW_ANDROID
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if (QString::fromUtf8 ("android") == app->platformName())
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display = (GstGLDisplay *) gst_gl_display_egl_new_with_egl_display (eglGetDisplay(EGL_DEFAULT_DISPLAY));
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#elif GST_GL_HAVE_PLATFORM_EGL && defined (HAVE_QT_EGLFS)
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if (QString::fromUtf8("eglfs") == app->platformName()) {
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#if GST_GL_HAVE_WINDOW_VIV_FB
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/* FIXME: Could get the display directly from Qt like this
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QPlatformNativeInterface *native =
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QGuiApplication::platformNativeInterface();
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EGLDisplay egl_display = (EGLDisplay)
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native->nativeResourceForWindow("egldisplay", NULL);
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However we seem to have no way for getting the EGLNativeDisplayType, aka
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native_display, via public API. As such we have to assume that display 0
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is always used. Only way around that is parsing the index the same way as
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Qt does in QEGLDeviceIntegration::fbDeviceName(), so let's do that.
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*/
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const gchar *fb_dev;
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gint disp_idx = 0;
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fb_dev = g_getenv ("QT_QPA_EGLFS_FB");
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if (fb_dev) {
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if (sscanf (fb_dev, "/dev/fb%d", &disp_idx) != 1)
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disp_idx = 0;
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}
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display = (GstGLDisplay *) gst_gl_display_viv_fb_new (disp_idx);
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#else
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display = (GstGLDisplay *) gst_gl_display_egl_new_with_egl_display (eglGetDisplay(EGL_DEFAULT_DISPLAY));
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#endif
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}
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#endif
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#if GST_GL_HAVE_WINDOW_COCOA && GST_GL_HAVE_PLATFORM_CGL && defined (HAVE_QT_MAC)
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if (QString::fromUtf8 ("cocoa") == app->platformName())
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display = (GstGLDisplay *) gst_gl_display_cocoa_new ();
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#endif
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#if GST_GL_HAVE_WINDOW_EAGL && GST_GL_HAVE_PLATFORM_EAGL && defined (HAVE_QT_IOS)
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if (QString::fromUtf8 ("ios") == app->platformName())
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display = gst_gl_display_new ();
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#endif
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#if GST_GL_HAVE_WINDOW_WIN32 && GST_GL_HAVE_PLATFORM_WGL && defined (HAVE_QT_WIN32)
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if (QString::fromUtf8 ("windows") == app->platformName())
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display = gst_gl_display_new ();
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#endif
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if (!display)
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display = gst_gl_display_new ();
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return display;
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}
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gboolean
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gst_qt_get_gl_wrapcontext (GstGLDisplay * display,
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GstGLContext **wrap_glcontext, GstGLContext **context)
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{
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GstGLPlatform platform = (GstGLPlatform) 0;
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GstGLAPI gl_api;
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guintptr gl_handle;
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GError *error = NULL;
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g_return_val_if_fail (display != NULL && wrap_glcontext != NULL, FALSE);
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#if GST_GL_HAVE_WINDOW_X11 && defined (HAVE_QT_X11)
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if (GST_IS_GL_DISPLAY_X11 (display)) {
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#if GST_GL_HAVE_PLATFORM_GLX
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platform = GST_GL_PLATFORM_GLX;
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#elif GST_GL_HAVE_PLATFORM_EGL
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platform = GST_GL_PLATFORM_EGL;
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#endif
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}
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#endif
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#if GST_GL_HAVE_WINDOW_WAYLAND && defined (HAVE_QT_WAYLAND)
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if (GST_IS_GL_DISPLAY_WAYLAND (display)) {
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platform = GST_GL_PLATFORM_EGL;
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}
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#endif
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#if GST_GL_HAVE_PLATFORM_EGL && defined (HAVE_QT_EGLFS)
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if (GST_IS_GL_DISPLAY_EGL (display)) {
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platform = GST_GL_PLATFORM_EGL;
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}
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#endif
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if (platform == 0) {
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#if GST_GL_HAVE_WINDOW_COCOA && GST_GL_HAVE_PLATFORM_CGL && defined (HAVE_QT_MAC)
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platform = GST_GL_PLATFORM_CGL;
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#elif GST_GL_HAVE_WINDOW_EAGL && GST_GL_HAVE_PLATFORM_EAGL && defined (HAVE_QT_IOS)
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platform = GST_GL_PLATFORM_EAGL;
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#elif GST_GL_HAVE_WINDOW_WIN32 && GST_GL_HAVE_PLATFORM_WGL && defined (HAVE_QT_WIN32)
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platform = GST_GL_PLATFORM_WGL;
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#else
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GST_ERROR ("Unknown platform");
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return FALSE;
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#endif
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}
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gl_api = gst_gl_context_get_current_gl_api (platform, NULL, NULL);
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gl_handle = gst_gl_context_get_current_gl_context (platform);
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if (gl_handle)
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*wrap_glcontext =
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gst_gl_context_new_wrapped (display, gl_handle,
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platform, gl_api);
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if (!*wrap_glcontext) {
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GST_ERROR ("cannot wrap qt OpenGL context");
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return FALSE;
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}
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(void) platform;
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(void) gl_api;
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(void) gl_handle;
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gst_gl_context_activate (*wrap_glcontext, TRUE);
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if (!gst_gl_context_fill_info (*wrap_glcontext, &error)) {
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GST_ERROR ("failed to retrieve qt context info: %s", error->message);
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g_object_unref (*wrap_glcontext);
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*wrap_glcontext = NULL;
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return FALSE;
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} else {
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gst_gl_display_filter_gl_api (display, gst_gl_context_get_gl_api (*wrap_glcontext));
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#if GST_GL_HAVE_WINDOW_WIN32 && GST_GL_HAVE_PLATFORM_WGL && defined (HAVE_QT_WIN32)
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g_return_val_if_fail (context != NULL, FALSE);
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G_STMT_START {
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GstGLWindow *window;
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HDC device;
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/* If there's no wglCreateContextAttribsARB() support, then we would fallback to
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* wglShareLists() which will fail with ERROR_BUSY (0xaa) if either of the GL
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* contexts are current in any other thread.
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*
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* The workaround here is to temporarily disable Qt's GL context while we
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* set up our own.
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*
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* Sometimes wglCreateContextAttribsARB()
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* exists, but isn't functional (some Intel drivers), so it's easiest to do this
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* unconditionally.
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*/
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*context = gst_gl_context_new (display);
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window = gst_gl_context_get_window (*context);
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device = (HDC) gst_gl_window_get_display (window);
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wglMakeCurrent (device, 0);
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gst_object_unref (window);
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if (!gst_gl_context_create (*context, *wrap_glcontext, &error)) {
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GST_ERROR ("%p failed to create shared GL context: %s", this, error->message);
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g_object_unref (*context);
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*context = NULL;
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g_object_unref (*wrap_glcontext);
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*wrap_glcontext = NULL;
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wglMakeCurrent (device, (HGLRC) gl_handle);
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return FALSE;
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}
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wglMakeCurrent (device, (HGLRC) gl_handle);
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}
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#endif
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gst_gl_context_activate (*wrap_glcontext, FALSE);
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} G_STMT_END;
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return TRUE;
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}
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