Ensure display hardware is powered up during Chromoting sessions.

remoting/host/event_executor_win.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "remoting/host/event_executor.h"
 
 #include <windows.h>
 
 #include "base/bind.h"
 #include "base/compiler_specific.h"
@@ skipping 76 matching lines @@
 uint16_t UsbKeycodeToWinScancode(uint32_t usb_keycode) {
   for (int i = 0; i < arraysize(usb_keycode_map); i++) {
     if (usb_keycode_map[i].usb_keycode == usb_keycode)
       return usb_keycode_map[i].native_keycode;
   }
 
   return INVALID_KEYCODE;
 }
 
 void EventExecutorWin::HandleKey(const KeyEvent& event) {
+  // Reset the system idle suspend timeout.
+  SetThreadExecutionState(ES_SYSTEM_REQUIRED);
+
+  // Calculate scan code from key event.
   int key = event.keycode();
   bool down = event.pressed();
-
-  // Calculate scan code from key event.
   int scancode = INVALID_KEYCODE;
   if (event.has_usb_keycode() && event.usb_keycode() != 0) {
     scancode = UsbKeycodeToWinScancode(event.usb_keycode());
     LOG(INFO) << std::hex << "Host received keycode: " << event.keycode()
             << " usb_keycode: " << event.usb_keycode()
             << " to scancode: " << scancode
             << std::dec;
   } else {
     HKL hkl = GetKeyboardLayout(0);
     scancode = MapVirtualKeyEx(key, MAPVK_VK_TO_VSC_EX, hkl);
@@ skipping 20 matching lines @@
   if (!down) {
     input.ki.dwFlags |= KEYEVENTF_KEYUP;
   }
 
   if (SendInput(1, &input, sizeof(INPUT)) == 0) {
     LOG_GETLASTERROR(ERROR) << "Failed to inject a key event";
   }
 }
 
 void EventExecutorWin::HandleMouse(const MouseEvent& event) {
+  // Reset the system idle suspend timeout.
+  SetThreadExecutionState(ES_SYSTEM_REQUIRED);
+
   // TODO(garykac) Collapse mouse (x,y) and button events into a single
   // input event when possible.
   if (event.has_x() && event.has_y()) {
     int x = event.x();
     int y = event.y();
 
     INPUT input;
     input.type = INPUT_MOUSE;
     input.mi.time = 0;
     SkISize screen_size = capturer_->size_most_recent();
@@ skipping 62 matching lines @@
 
 }  // namespace
 
 scoped_ptr<protocol::HostEventStub> EventExecutor::Create(
     MessageLoop* message_loop, Capturer* capturer) {
   return scoped_ptr<protocol::HostEventStub>(
       new EventExecutorWin(message_loop, capturer));
 }
 
 }  // namespace remoting