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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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ddf7c1ec63
Scenario is using wayland with this pipeline: videotestsrc ! glupload ! qml6glsink. First pipeline and qml construction works just fine. However if all GStreamer and QML scenegraph resources are removed, GStreamer will call eglTerminate() and sever the connection to the display server for Qt. When Qt attempts to do any further GL operations like construct a new QML scene, it can crash in any number of places as libEGL will start returning NULL or other unexpected values. What we really need is to ensure that if an external API (e.g. Qt) will eventually call eglTerminate(), there is no need for GStreamer to call eglTerminate(). This is what the foreign display flags allows setting. There is also another possible scenario where one may like to make GStreamer assume ownership of an EGLDisplay and thus eventually call `eglTerminate()`. As such, it is now also possible to mark an GstGLDisplayEGL as non-foreign. Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/8504>
88 lines
2.7 KiB
C
88 lines
2.7 KiB
C
/*
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* GStreamer
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* Copyright (C) 2014 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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#ifndef __GST_GL_DISPLAY_EGL_H__
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#define __GST_GL_DISPLAY_EGL_H__
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#include <gst/gl/gstgldisplay.h>
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G_BEGIN_DECLS
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GST_GL_API
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GType gst_gl_display_egl_get_type (void);
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#define GST_TYPE_GL_DISPLAY_EGL (gst_gl_display_egl_get_type())
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#define GST_GL_DISPLAY_EGL(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_GL_DISPLAY_EGL,GstGLDisplayEGL))
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#define GST_GL_DISPLAY_EGL_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass), GST_TYPE_GL_DISPLAY_EGL,GstGLDisplayEGLClass))
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#define GST_IS_GL_DISPLAY_EGL(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_GL_DISPLAY_EGL))
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#define GST_IS_GL_DISPLAY_EGL_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass), GST_TYPE_GL_DISPLAY_EGL))
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#define GST_GL_DISPLAY_EGL_CAST(obj) ((GstGLDisplayEGL*)(obj))
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typedef struct _GstGLDisplayEGL GstGLDisplayEGL;
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typedef struct _GstGLDisplayEGLClass GstGLDisplayEGLClass;
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/**
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* GstGLDisplayEGL:
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*
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* the contents of a #GstGLDisplayEGL are private and should only be accessed
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* through the provided API
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*/
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struct _GstGLDisplayEGL
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{
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GstGLDisplay parent;
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/*< private >*/
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gpointer display;
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gboolean foreign_display;
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gpointer _padding[GST_PADDING];
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};
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struct _GstGLDisplayEGLClass
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{
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GstGLDisplayClass object_class;
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gpointer _padding[GST_PADDING];
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};
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GST_GL_API
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GstGLDisplayEGL *gst_gl_display_egl_new (void);
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GST_GL_API
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GstGLDisplayEGL *gst_gl_display_egl_new_surfaceless (void);
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GST_GL_API
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GstGLDisplayEGL *gst_gl_display_egl_new_with_egl_display (gpointer display);
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GST_GL_API
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GstGLDisplayEGL *gst_gl_display_egl_from_gl_display (GstGLDisplay * display);
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GST_GL_API
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gpointer gst_gl_display_egl_get_from_native (GstGLDisplayType type, guintptr display);
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GST_GL_API
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void gst_gl_display_egl_set_foreign (GstGLDisplayEGL * display_egl, gboolean foreign);
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#define GST_GL_DISPLAY_EGL_NAME "gst.gl.display.egl"
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G_END_DECLS
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#endif /* __GST_GL_DISPLAY_EGL_H__ */
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