mirror of
https://github.com/mozilla/gecko-dev.git
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65 lines
1.8 KiB
C++
65 lines
1.8 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set sw=2 ts=8 et ft=cpp : */
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/* Copyright 2012 Mozilla Foundation and Mozilla contributors
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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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*/
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#include "Framebuffer.h"
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#include "android/log.h"
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#include <fcntl.h>
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#include <linux/fb.h>
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#include <sys/ioctl.h>
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#include "nsSize.h"
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#include "mozilla/FileUtils.h"
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#define LOG(args...) __android_log_print(ANDROID_LOG_INFO, "Gonk" , ## args)
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using namespace std;
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namespace mozilla {
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namespace Framebuffer {
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static size_t sMappedSize;
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static struct fb_var_screeninfo sVi;
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static gfxIntSize *sScreenSize = nullptr;
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bool
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GetSize(nsIntSize *aScreenSize) {
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// If the framebuffer has been opened, we should always have the size.
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if (sScreenSize) {
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*aScreenSize = *sScreenSize;
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return true;
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}
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ScopedClose fd(open("/dev/graphics/fb0", O_RDWR));
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if (0 > fd.get()) {
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LOG("Error opening framebuffer device");
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return false;
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}
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if (0 > ioctl(fd.get(), FBIOGET_VSCREENINFO, &sVi)) {
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LOG("Error getting variable screeninfo");
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return false;
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}
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sScreenSize = new gfxIntSize(sVi.xres, sVi.yres);
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*aScreenSize = *sScreenSize;
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return true;
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}
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} // namespace Framebuffer
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} // namespace mozilla
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