Repo created

TMessagesProj/jni/voip/webrtc/modules/desktop_capture/win/desktop.cc

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+/*
+ *  Copyright (c) 2013 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include "modules/desktop_capture/win/desktop.h"
+
+#include <vector>
+
+#include "rtc_base/logging.h"
+#include "rtc_base/string_utils.h"
+
+namespace webrtc {
+
+Desktop::Desktop(HDESK desktop, bool own) : desktop_(desktop), own_(own) {}
+
+Desktop::~Desktop() {
+  if (own_ && desktop_ != NULL) {
+    if (!::CloseDesktop(desktop_)) {
+      RTC_LOG(LS_ERROR) << "Failed to close the owned desktop handle: "
+                        << GetLastError();
+    }
+  }
+}
+
+bool Desktop::GetName(std::wstring* desktop_name_out) const {
+  if (desktop_ == NULL)
+    return false;
+
+  DWORD length = 0;
+  int rv = GetUserObjectInformationW(desktop_, UOI_NAME, NULL, 0, &length);
+  if (rv || GetLastError() != ERROR_INSUFFICIENT_BUFFER)
+    abort();
+
+  length /= sizeof(WCHAR);
+  std::vector<WCHAR> buffer(length);
+  if (!GetUserObjectInformationW(desktop_, UOI_NAME, &buffer[0],
+                                 length * sizeof(WCHAR), &length)) {
+    RTC_LOG(LS_ERROR) << "Failed to query the desktop name: " << GetLastError();
+    return false;
+  }
+
+  desktop_name_out->assign(&buffer[0], length / sizeof(WCHAR));
+  return true;
+}
+
+bool Desktop::IsSame(const Desktop& other) const {
+  std::wstring name;
+  if (!GetName(&name))
+    return false;
+
+  std::wstring other_name;
+  if (!other.GetName(&other_name))
+    return false;
+
+  return name == other_name;
+}
+
+bool Desktop::SetThreadDesktop() const {
+  if (!::SetThreadDesktop(desktop_)) {
+    RTC_LOG(LS_ERROR) << "Failed to assign the desktop to the current thread: "
+                      << GetLastError();
+    return false;
+  }
+
+  return true;
+}
+
+Desktop* Desktop::GetDesktop(const WCHAR* desktop_name) {
+  ACCESS_MASK desired_access = DESKTOP_CREATEMENU | DESKTOP_CREATEWINDOW |
+                               DESKTOP_ENUMERATE | DESKTOP_HOOKCONTROL |
+                               DESKTOP_WRITEOBJECTS | DESKTOP_READOBJECTS |
+                               DESKTOP_SWITCHDESKTOP | GENERIC_WRITE;
+  HDESK desktop = OpenDesktopW(desktop_name, 0, FALSE, desired_access);
+  if (desktop == NULL) {
+    RTC_LOG(LS_ERROR) << "Failed to open the desktop '"
+                      << rtc::ToUtf8(desktop_name) << "': " << GetLastError();
+    return NULL;
+  }
+
+  return new Desktop(desktop, true);
+}
+
+Desktop* Desktop::GetInputDesktop() {
+  HDESK desktop = OpenInputDesktop(
+      0, FALSE, GENERIC_READ | GENERIC_WRITE | GENERIC_EXECUTE);
+  if (desktop == NULL)
+    return NULL;
+
+  return new Desktop(desktop, true);
+}
+
+Desktop* Desktop::GetThreadDesktop() {
+  HDESK desktop = ::GetThreadDesktop(GetCurrentThreadId());
+  if (desktop == NULL) {
+    RTC_LOG(LS_ERROR)
+        << "Failed to retrieve the handle of the desktop assigned to "
+           "the current thread: "
+        << GetLastError();
+    return NULL;
+  }
+
+  return new Desktop(desktop, false);
+}
+
+}  // namespace webrtc