4220434d37
The original ScreenCapturerWin is renamed ScreenCapturerWinGdi. BUG=2789 TESTED=full desktop cast and single monitor cast works on win7 and win8 desktop mode. Have to use GDI capturer on win8 metro mode. Changing display configuration work on the fly. R=sergeyu@chromium.org, wez@chromium.org Committed: https://code.google.com/p/webrtc/source/detail?r=6048 Review URL: https://webrtc-codereview.appspot.com/12149004 git-svn-id: http://webrtc.googlecode.com/svn/trunk@6053 4adac7df-926f-26a2-2b94-8c16560cd09d
92 lines
2.9 KiB
C++
92 lines
2.9 KiB
C++
/*
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* Copyright (c) 2014 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "webrtc/modules/desktop_capture/win/screen_capture_utils.h"
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#include <windows.h>
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namespace webrtc {
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bool GetScreenList(ScreenCapturer::ScreenList* screens) {
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assert(screens->size() == 0);
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BOOL enum_result = TRUE;
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for (int device_index = 0;; ++device_index) {
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DISPLAY_DEVICE device;
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device.cb = sizeof(device);
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enum_result = EnumDisplayDevices(NULL, device_index, &device, 0);
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// |enum_result| is 0 if we have enumerated all devices.
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if (!enum_result)
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break;
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// We only care about active displays.
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if (!(device.StateFlags & DISPLAY_DEVICE_ACTIVE))
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continue;
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ScreenCapturer::Screen screen;
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screen.id = device_index;
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screens->push_back(screen);
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}
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return true;
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}
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bool IsScreenValid(ScreenId screen, std::wstring* device_key) {
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if (screen == kFullDesktopScreenId) {
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*device_key = L"";
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return true;
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}
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DISPLAY_DEVICE device;
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device.cb = sizeof(device);
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BOOL enum_result = EnumDisplayDevices(NULL, screen, &device, 0);
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if (enum_result)
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*device_key = device.DeviceKey;
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return !!enum_result;
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}
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DesktopRect GetScreenRect(ScreenId screen, const std::wstring& device_key) {
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if (screen == kFullDesktopScreenId) {
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return DesktopRect::MakeXYWH(GetSystemMetrics(SM_XVIRTUALSCREEN),
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GetSystemMetrics(SM_YVIRTUALSCREEN),
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GetSystemMetrics(SM_CXVIRTUALSCREEN),
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GetSystemMetrics(SM_CYVIRTUALSCREEN));
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}
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DISPLAY_DEVICE device;
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device.cb = sizeof(device);
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BOOL result = EnumDisplayDevices(NULL, screen, &device, 0);
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if (!result)
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return DesktopRect();
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// Verifies the device index still maps to the same display device, to make
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// sure we are capturing the same device when devices are added or removed.
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// DeviceKey is documented as reserved, but it actually contains the registry
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// key for the device and is unique for each monitor, while DeviceID is not.
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if (device_key != device.DeviceKey)
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return DesktopRect();
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DEVMODE device_mode;
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device_mode.dmSize = sizeof(device_mode);
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device_mode.dmDriverExtra = 0;
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result = EnumDisplaySettingsEx(
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device.DeviceName, ENUM_CURRENT_SETTINGS, &device_mode, 0);
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if (!result)
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return DesktopRect();
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return DesktopRect::MakeXYWH(device_mode.dmPosition.x,
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device_mode.dmPosition.y,
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device_mode.dmPelsWidth,
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device_mode.dmPelsHeight);
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}
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} // namespace webrtc
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