665174fdbb
Running clang-format with chromium's style guide. The goal is n-fold: * providing consistency and readability (that's what code guidelines are for) * preventing noise with presubmit checks and git cl format * building on the previous point: making it easier to automatically fix format issues * you name it Please consider using git-hyper-blame to ignore this commit. Bug: webrtc:9340 Change-Id: I694567c4cdf8cee2860958cfe82bfaf25848bb87 Reviewed-on: https://webrtc-review.googlesource.com/81185 Reviewed-by: Patrik Höglund <phoglund@webrtc.org> Cr-Commit-Position: refs/heads/master@{#23660}
97 lines
3.4 KiB
C++
97 lines
3.4 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 "modules/desktop_capture/mac/desktop_configuration_monitor.h"
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#include "modules/desktop_capture/mac/desktop_configuration.h"
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#include "rtc_base/logging.h"
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#include "rtc_base/trace_event.h"
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#include "system_wrappers/include/event_wrapper.h"
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namespace webrtc {
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// The amount of time allowed for displays to reconfigure.
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static const int64_t kDisplayConfigurationEventTimeoutMs = 10 * 1000;
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DesktopConfigurationMonitor::DesktopConfigurationMonitor()
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: display_configuration_capture_event_(EventWrapper::Create()) {
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CGError err = CGDisplayRegisterReconfigurationCallback(
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DesktopConfigurationMonitor::DisplaysReconfiguredCallback, this);
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if (err != kCGErrorSuccess) {
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RTC_LOG(LS_ERROR) << "CGDisplayRegisterReconfigurationCallback " << err;
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abort();
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}
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display_configuration_capture_event_->Set();
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desktop_configuration_ = MacDesktopConfiguration::GetCurrent(
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MacDesktopConfiguration::TopLeftOrigin);
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}
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DesktopConfigurationMonitor::~DesktopConfigurationMonitor() {
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CGError err = CGDisplayRemoveReconfigurationCallback(
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DesktopConfigurationMonitor::DisplaysReconfiguredCallback, this);
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if (err != kCGErrorSuccess)
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RTC_LOG(LS_ERROR) << "CGDisplayRemoveReconfigurationCallback " << err;
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}
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void DesktopConfigurationMonitor::Lock() {
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if (!display_configuration_capture_event_->Wait(
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kDisplayConfigurationEventTimeoutMs)) {
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RTC_LOG_F(LS_ERROR) << "Event wait timed out.";
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abort();
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}
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}
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void DesktopConfigurationMonitor::Unlock() {
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display_configuration_capture_event_->Set();
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}
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// static
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void DesktopConfigurationMonitor::DisplaysReconfiguredCallback(
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CGDirectDisplayID display,
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CGDisplayChangeSummaryFlags flags,
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void* user_parameter) {
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DesktopConfigurationMonitor* monitor =
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reinterpret_cast<DesktopConfigurationMonitor*>(user_parameter);
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monitor->DisplaysReconfigured(display, flags);
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}
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void DesktopConfigurationMonitor::DisplaysReconfigured(
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CGDirectDisplayID display,
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CGDisplayChangeSummaryFlags flags) {
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TRACE_EVENT0("webrtc", "DesktopConfigurationMonitor::DisplaysReconfigured");
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RTC_LOG(LS_INFO) << "DisplaysReconfigured: "
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<< "DisplayID " << display << "; ChangeSummaryFlags "
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<< flags;
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if (flags & kCGDisplayBeginConfigurationFlag) {
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if (reconfiguring_displays_.empty()) {
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// If this is the first display to start reconfiguring then wait on
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// |display_configuration_capture_event_| to block the capture thread
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// from accessing display memory until the reconfiguration completes.
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if (!display_configuration_capture_event_->Wait(
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kDisplayConfigurationEventTimeoutMs)) {
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RTC_LOG_F(LS_ERROR) << "Event wait timed out.";
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abort();
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}
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}
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reconfiguring_displays_.insert(display);
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} else {
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reconfiguring_displays_.erase(display);
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if (reconfiguring_displays_.empty()) {
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desktop_configuration_ = MacDesktopConfiguration::GetCurrent(
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MacDesktopConfiguration::TopLeftOrigin);
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display_configuration_capture_event_->Set();
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}
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}
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}
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} // namespace webrtc
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