c018bae807
git ls-files | grep -e "\(\.h\|\.cc\)$" | grep -e "^modules/" | xargs clang-format -i ; git cl format after landing: add to .git-blame-ignore-revs Bug: webrtc:15082 Change-Id: I2c3cd28740062794f8c10e39d8406aadb9e9a35a Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/301620 Reviewed-by: Harald Alvestrand <hta@webrtc.org> Commit-Queue: Harald Alvestrand <hta@webrtc.org> Auto-Submit: Jared Siskin <jtsiskin@meta.com> Cr-Commit-Position: refs/heads/main@{#39901}
80 lines
3.3 KiB
C++
80 lines
3.3 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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#ifndef MODULES_DESKTOP_CAPTURE_WIN_SCREEN_CAPTURE_UTILS_H_
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#define MODULES_DESKTOP_CAPTURE_WIN_SCREEN_CAPTURE_UTILS_H_
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#if defined(WEBRTC_WIN)
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// Forward declare HMONITOR in a windows.h compatible way so that we can avoid
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// including windows.h.
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#define WEBRTC_DECLARE_HANDLE(name) \
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struct name##__; \
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typedef struct name##__* name
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WEBRTC_DECLARE_HANDLE(HMONITOR);
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#undef WEBRTC_DECLARE_HANDLE
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#endif
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#include <string>
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#include <vector>
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#include "modules/desktop_capture/desktop_capturer.h"
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#include "rtc_base/system/rtc_export.h"
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namespace webrtc {
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// Returns true if the system has at least one active display.
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bool HasActiveDisplay();
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// Output the list of active screens into `screens`. Returns true if succeeded,
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// or false if it fails to enumerate the display devices. If the `device_names`
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// is provided, it will be filled with the DISPLAY_DEVICE.DeviceName in UTF-8
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// encoding. If this function returns true, consumers can always assume that
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// `screens`[i] and `device_names`[i] indicate the same monitor on the system.
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bool GetScreenList(DesktopCapturer::SourceList* screens,
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std::vector<std::string>* device_names = nullptr);
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// Converts a device index (which are returned by `GetScreenList`) into an
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// HMONITOR.
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bool GetHmonitorFromDeviceIndex(DesktopCapturer::SourceId device_index,
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HMONITOR* hmonitor);
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// Returns true if `monitor` represents a valid display
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// monitor. Consumers should recheck the validity of HMONITORs before use if a
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// WM_DISPLAYCHANGE message has been received.
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bool IsMonitorValid(HMONITOR monitor);
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// Returns the rect of the monitor identified by `monitor`, relative to the
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// primary display's top-left. On failure, returns an empty rect.
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DesktopRect GetMonitorRect(HMONITOR monitor);
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// Returns the DPI for the specified monitor. On failure, returns the system DPI
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// or the Windows default DPI (96x96) if the system DPI can't be retrieved.
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DesktopVector GetDpiForMonitor(HMONITOR monitor);
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// Returns true if `screen` is a valid screen. The screen device key is
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// returned through `device_key` if the screen is valid. The device key can be
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// used in GetScreenRect to verify the screen matches the previously obtained
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// id.
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bool IsScreenValid(DesktopCapturer::SourceId screen, std::wstring* device_key);
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// Get the rect of the entire system in system coordinate system. I.e. the
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// primary monitor always starts from (0, 0).
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DesktopRect GetFullscreenRect();
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// Get the rect of the screen identified by `screen`, relative to the primary
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// display's top-left. If the screen device key does not match `device_key`, or
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// the screen does not exist, or any error happens, an empty rect is returned.
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RTC_EXPORT DesktopRect GetScreenRect(DesktopCapturer::SourceId screen,
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const std::wstring& device_key);
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} // namespace webrtc
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#endif // MODULES_DESKTOP_CAPTURE_WIN_SCREEN_CAPTURE_UTILS_H_
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