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diff --git a/src/gui/opengl/platform/egl/qeglstreamconvenience_p.h b/src/gui/opengl/platform/egl/qeglstreamconvenience_p.h
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+++ b/src/gui/opengl/platform/egl/qeglstreamconvenience_p.h
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+// Copyright (C) 2020 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
+
+#ifndef QEGLSTREAMCONVENIENCE_H
+#define QEGLSTREAMCONVENIENCE_H
+
+//
+// W A R N I N G
+// -------------
+//
+// This file is not part of the Qt API. It exists purely as an
+// implementation detail. This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtGui/qtguiglobal.h>
+
+#include <QtGui/private/qt_egl_p.h>
+
+// This provides runtime EGLDevice/Output/Stream support even when eglext.h in
+// the sysroot is not up-to-date.
+
+#ifndef EGL_VERSION_1_5
+typedef intptr_t EGLAttrib;
+#endif
+
+#ifndef EGL_EXT_platform_base
+typedef EGLDisplay (EGLAPIENTRYP PFNEGLGETPLATFORMDISPLAYEXTPROC) (EGLenum platform, void *native_display, const EGLint *attrib_list);
+#endif
+
+#ifndef EGL_EXT_device_base
+typedef void *EGLDeviceEXT;
+#define EGL_NO_DEVICE_EXT ((EGLDeviceEXT)(0))
+typedef EGLBoolean (EGLAPIENTRYP PFNEGLQUERYDEVICESEXTPROC) (EGLint max_devices, EGLDeviceEXT *devices, EGLint *num_devices);
+typedef const char *(EGLAPIENTRYP PFNEGLQUERYDEVICESTRINGEXTPROC) (EGLDeviceEXT device, EGLint name);
+#endif
+
+#ifndef EGL_EXT_output_base
+typedef void *EGLOutputLayerEXT;
+typedef void *EGLOutputPortEXT;
+#define EGL_NO_OUTPUT_LAYER_EXT ((EGLOutputLayerEXT)0)
+typedef EGLBoolean (EGLAPIENTRYP PFNEGLGETOUTPUTLAYERSEXTPROC) (EGLDisplay dpy, const EGLAttrib *attrib_list, EGLOutputLayerEXT *layers, EGLint max_layers, EGLint *num_layers);
+typedef EGLBoolean (EGLAPIENTRYP PFNEGLGETOUTPUTPORTSEXTPROC) (EGLDisplay dpy, const EGLAttrib *attrib_list, EGLOutputPortEXT *ports, EGLint max_ports, EGLint *num_ports);
+typedef EGLBoolean (EGLAPIENTRYP PFNEGLOUTPUTLAYERATTRIBEXTPROC) (EGLDisplay dpy, EGLOutputLayerEXT layer, EGLint attribute, EGLAttrib value);
+typedef EGLBoolean (EGLAPIENTRYP PFNEGLQUERYOUTPUTLAYERATTRIBEXTPROC) (EGLDisplay dpy, EGLOutputLayerEXT layer, EGLint attribute, EGLAttrib *value);
+typedef const char *(EGLAPIENTRYP PFNEGLQUERYOUTPUTLAYERSTRINGEXTPROC) (EGLDisplay dpy, EGLOutputLayerEXT layer, EGLint name);
+typedef EGLBoolean (EGLAPIENTRYP PFNEGLQUERYOUTPUTPORTATTRIBEXTPROC) (EGLDisplay dpy, EGLOutputPortEXT port, EGLint attribute, EGLAttrib *value);
+typedef const char *(EGLAPIENTRYP PFNEGLQUERYOUTPUTPORTSTRINGEXTPROC) (EGLDisplay dpy, EGLOutputPortEXT port, EGLint name);
+#endif
+
+#ifndef EGL_KHR_stream
+typedef void *EGLStreamKHR;
+typedef quint64 EGLuint64KHR;
+#define EGL_NO_STREAM_KHR ((EGLStreamKHR)0)
+#define EGL_STREAM_STATE_KHR 0x3214
+#define EGL_STREAM_STATE_CREATED_KHR 0x3215
+#define EGL_STREAM_STATE_CONNECTING_KHR 0x3216
+#define EGL_STREAM_STATE_EMPTY_KHR 0x3217
+#define EGL_STREAM_STATE_NEW_FRAME_AVAILABLE_KHR 0x3218
+#define EGL_STREAM_STATE_OLD_FRAME_AVAILABLE_KHR 0x3219
+#define EGL_STREAM_STATE_DISCONNECTED_KHR 0x321A
+#define EGL_BAD_STREAM_KHR 0x321B
+#define EGL_BAD_STATE_KHR 0x321C
+typedef EGLStreamKHR (EGLAPIENTRYP PFNEGLCREATESTREAMKHRPROC) (EGLDisplay dpy, const EGLint *attrib_list);
+typedef EGLBoolean (EGLAPIENTRYP PFNEGLDESTROYSTREAMKHRPROC) (EGLDisplay dpy, EGLStreamKHR stream);
+typedef EGLBoolean (EGLAPIENTRYP PFNEGLSTREAMATTRIBKHRPROC) (EGLDisplay dpy, EGLStreamKHR stream, EGLenum attribute, EGLint value);
+typedef EGLBoolean (EGLAPIENTRYP PFNEGLQUERYSTREAMKHRPROC) (EGLDisplay dpy, EGLStreamKHR stream, EGLenum attribute, EGLint *value);
+typedef EGLBoolean (EGLAPIENTRYP PFNEGLQUERYSTREAMU64KHRPROC) (EGLDisplay dpy, EGLStreamKHR stream, EGLenum attribute, EGLuint64KHR *value);
+#endif
+
+#ifndef EGL_KHR_stream_fifo
+#define EGL_STREAM_FIFO_LENGTH_KHR 0x31FC
+#endif
+
+#ifndef EGL_KHR_stream_producer_eglsurface
+#define EGL_STREAM_BIT_KHR 0x0800
+typedef EGLSurface (EGLAPIENTRYP PFNEGLCREATESTREAMPRODUCERSURFACEKHRPROC) (EGLDisplay dpy, EGLConfig config, EGLStreamKHR stream, const EGLint *attrib_list);
+#endif
+
+#ifndef EGL_KHR_stream_cross_process_fd
+typedef int EGLNativeFileDescriptorKHR;
+#define EGL_NO_FILE_DESCRIPTOR_KHR ((EGLNativeFileDescriptorKHR)(-1))
+typedef EGLNativeFileDescriptorKHR (EGLAPIENTRYP PFNEGLGETSTREAMFILEDESCRIPTORKHRPROC) (EGLDisplay dpy, EGLStreamKHR stream);
+typedef EGLStreamKHR (EGLAPIENTRYP PFNEGLCREATESTREAMFROMFILEDESCRIPTORKHRPROC) (EGLDisplay dpy, EGLNativeFileDescriptorKHR file_descriptor);
+#endif
+
+#ifndef EGL_KHR_stream_consumer_gltexture
+typedef EGLBoolean (EGLAPIENTRYP PFNEGLSTREAMCONSUMERGLTEXTUREEXTERNALKHRPROC) (EGLDisplay dpy, EGLStreamKHR stream);
+typedef EGLBoolean (EGLAPIENTRYP PFNEGLSTREAMCONSUMERACQUIREKHRPROC) (EGLDisplay dpy, EGLStreamKHR stream);
+typedef EGLBoolean (EGLAPIENTRYP PFNEGLSTREAMCONSUMERRELEASEKHRPROC) (EGLDisplay dpy, EGLStreamKHR stream);
+#endif
+
+#ifndef EGL_EXT_stream_consumer_egloutput
+typedef EGLBoolean (EGLAPIENTRYP PFNEGLSTREAMCONSUMEROUTPUTEXTPROC) (EGLDisplay dpy, EGLStreamKHR stream, EGLOutputLayerEXT layer);
+#endif
+
+#ifndef EGL_EXT_platform_device
+#define EGL_PLATFORM_DEVICE_EXT 0x313F
+#endif
+
+#ifndef EGL_EXT_device_drm
+#define EGL_DRM_DEVICE_FILE_EXT 0x3233
+#endif
+
+#ifndef EGL_EXT_output_drm
+#define EGL_DRM_CRTC_EXT 0x3234
+#define EGL_DRM_PLANE_EXT 0x3235
+#endif
+
+#ifndef EGL_PLATFORM_X11_KHR
+#define EGL_PLATFORM_X11_KHR 0x31D5
+#endif
+
+#ifndef EGL_PLATFORM_XCB_KHR
+#define EGL_PLATFORM_XCB_KHR 0x31DC
+#endif
+
+#ifndef EGL_NV_stream_attrib
+typedef EGLStreamKHR (EGLAPIENTRYP PFNEGLCREATESTREAMATTRIBNVPROC) (EGLDisplay dpy, const EGLAttrib *attrib_list);
+typedef EGLBoolean (EGLAPIENTRYP PFNEGLSETSTREAMATTRIBNVPROC) (EGLDisplay dpy, EGLStreamKHR stream, EGLenum attribute, EGLAttrib value);
+typedef EGLBoolean (EGLAPIENTRYP PFNEGLQUERYSTREAMATTRIBNVPROC) (EGLDisplay dpy, EGLStreamKHR stream, EGLenum attribute, EGLAttrib *value);
+typedef EGLBoolean (EGLAPIENTRYP PFNEGLSTREAMCONSUMERACQUIREATTRIBNVPROC) (EGLDisplay dpy, EGLStreamKHR stream, const EGLAttrib *attrib_list);
+typedef EGLBoolean (EGLAPIENTRYP PFNEGLSTREAMCONSUMERRELEASEATTRIBNVPROC) (EGLDisplay dpy, EGLStreamKHR stream, const EGLAttrib *attrib_list);
+#endif
+
+QT_BEGIN_NAMESPACE
+
+class Q_GUI_EXPORT QEGLStreamConvenience
+{
+public:
+ QEGLStreamConvenience();
+ void initialize(EGLDisplay dpy);
+
+ PFNEGLGETPLATFORMDISPLAYEXTPROC get_platform_display;
+ PFNEGLQUERYDEVICESEXTPROC query_devices;
+ PFNEGLQUERYDEVICESTRINGEXTPROC query_device_string;
+ PFNEGLCREATESTREAMKHRPROC create_stream;
+ PFNEGLCREATESTREAMATTRIBNVPROC create_stream_attrib_nv;
+ PFNEGLSETSTREAMATTRIBNVPROC set_stream_attrib_nv;
+ PFNEGLQUERYSTREAMATTRIBNVPROC query_stream_attrib_nv;
+ PFNEGLSTREAMCONSUMERACQUIREATTRIBNVPROC acquire_stream_attrib_nv;
+ PFNEGLSTREAMCONSUMERRELEASEATTRIBNVPROC release_stream_attrib_nv;
+ PFNEGLDESTROYSTREAMKHRPROC destroy_stream;
+ PFNEGLSTREAMATTRIBKHRPROC stream_attrib;
+ PFNEGLQUERYSTREAMKHRPROC query_stream;
+ PFNEGLQUERYSTREAMU64KHRPROC query_stream_u64;
+ PFNEGLCREATESTREAMPRODUCERSURFACEKHRPROC create_stream_producer_surface;
+ PFNEGLSTREAMCONSUMEROUTPUTEXTPROC stream_consumer_output;
+ PFNEGLGETOUTPUTLAYERSEXTPROC get_output_layers;
+ PFNEGLGETOUTPUTPORTSEXTPROC get_output_ports;
+ PFNEGLOUTPUTLAYERATTRIBEXTPROC output_layer_attrib;
+ PFNEGLQUERYOUTPUTLAYERATTRIBEXTPROC query_output_layer_attrib;
+ PFNEGLQUERYOUTPUTLAYERSTRINGEXTPROC query_output_layer_string;
+ PFNEGLQUERYOUTPUTPORTATTRIBEXTPROC query_output_port_attrib;
+ PFNEGLQUERYOUTPUTPORTSTRINGEXTPROC query_output_port_string;
+ PFNEGLGETSTREAMFILEDESCRIPTORKHRPROC get_stream_file_descriptor;
+ PFNEGLCREATESTREAMFROMFILEDESCRIPTORKHRPROC create_stream_from_file_descriptor;
+ PFNEGLSTREAMCONSUMERGLTEXTUREEXTERNALKHRPROC stream_consumer_gltexture;
+ PFNEGLSTREAMCONSUMERACQUIREKHRPROC stream_consumer_acquire;
+ PFNEGLSTREAMCONSUMERRELEASEKHRPROC stream_consumer_release;
+
+ bool initialized;
+
+ bool has_egl_platform_device;
+ bool has_egl_device_base;
+ bool has_egl_stream;
+ bool has_egl_stream_producer_eglsurface;
+ bool has_egl_stream_consumer_egloutput;
+ bool has_egl_output_drm;
+ bool has_egl_output_base;
+ bool has_egl_stream_cross_process_fd;
+ bool has_egl_stream_consumer_gltexture;
+};
+
+QT_END_NAMESPACE
+
+#endif