// Copyright 2016 The SwiftShader Authors. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "libX11.hpp"
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#include "Common/SharedLibrary.hpp"
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#define Bool int
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LibX11exports::LibX11exports(void *libX11, void *libXext)
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{
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XOpenDisplay = (Display *(*)(char*))getProcAddress(libX11, "XOpenDisplay");
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XGetWindowAttributes = (Status (*)(Display*, Window, XWindowAttributes*))getProcAddress(libX11, "XGetWindowAttributes");
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XDefaultScreenOfDisplay = (Screen *(*)(Display*))getProcAddress(libX11, "XDefaultScreenOfDisplay");
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XWidthOfScreen = (int (*)(Screen*))getProcAddress(libX11, "XWidthOfScreen");
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XHeightOfScreen = (int (*)(Screen*))getProcAddress(libX11, "XHeightOfScreen");
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XPlanesOfScreen = (int (*)(Screen*))getProcAddress(libX11, "XPlanesOfScreen");
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XDefaultGC = (GC (*)(Display*, int))getProcAddress(libX11, "XDefaultGC");
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XDefaultDepth = (int (*)(Display*, int))getProcAddress(libX11, "XDefaultDepth");
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XMatchVisualInfo = (Status (*)(Display*, int, int, int, XVisualInfo*))getProcAddress(libX11, "XMatchVisualInfo");
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XDefaultVisual = (Visual *(*)(Display*, int screen_number))getProcAddress(libX11, "XDefaultVisual");
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XSetErrorHandler = (int (*(*)(int (*)(Display*, XErrorEvent*)))(Display*, XErrorEvent*))getProcAddress(libX11, "XSetErrorHandler");
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XSync = (int (*)(Display*, Bool))getProcAddress(libX11, "XSync");
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XCreateImage = (XImage *(*)(Display*, Visual*, unsigned int, int, int, char*, unsigned int, unsigned int, int, int))getProcAddress(libX11, "XCreateImage");
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XCloseDisplay = (int (*)(Display*))getProcAddress(libX11, "XCloseDisplay");
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XPutImage = (int (*)(Display*, Drawable, GC, XImage*, int, int, int, int, unsigned int, unsigned int))getProcAddress(libX11, "XPutImage");
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XDrawString = (int (*)(Display*, Drawable, GC, int, int, char*, int))getProcAddress(libX11, "XDrawString");
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XShmQueryExtension = (Bool (*)(Display*))getProcAddress(libXext, "XShmQueryExtension");
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XShmCreateImage = (XImage *(*)(Display*, Visual*, unsigned int, int, char*, XShmSegmentInfo*, unsigned int, unsigned int))getProcAddress(libXext, "XShmCreateImage");
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XShmAttach = (Bool (*)(Display*, XShmSegmentInfo*))getProcAddress(libXext, "XShmAttach");
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XShmDetach = (Bool (*)(Display*, XShmSegmentInfo*))getProcAddress(libXext, "XShmDetach");
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XShmPutImage = (int (*)(Display*, Drawable, GC, XImage*, int, int, int, int, unsigned int, unsigned int, bool))getProcAddress(libXext, "XShmPutImage");
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}
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LibX11exports *LibX11::operator->()
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{
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return loadExports();
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}
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LibX11exports *LibX11::loadExports()
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{
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static void *libX11 = nullptr;
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static void *libXext = nullptr;
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static LibX11exports *libX11exports = nullptr;
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if(!libX11)
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{
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if(getProcAddress(RTLD_DEFAULT, "XOpenDisplay")) // Search the global scope for pre-loaded X11 library.
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{
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libX11exports = new LibX11exports(RTLD_DEFAULT, RTLD_DEFAULT);
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libX11 = (void*)-1; // No need to load it.
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}
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else
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{
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libX11 = loadLibrary("libX11.so");
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if(libX11)
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{
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libXext = loadLibrary("libXext.so");
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libX11exports = new LibX11exports(libX11, libXext);
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}
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else
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{
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libX11 = (void*)-1; // Don't attempt loading more than once.
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}
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}
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}
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return libX11exports;
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}
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LibX11 libX11;
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