win: Consolidate on a single version checking API

No intended behavior change.

Happens to remove one call to GetVersionEx.

Bug: chromium:1255114
Change-Id: If4d1c57fa27ad4a7547f8f18c3abe38bc9b2a325
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/234160
Reviewed-by: Joe Downing <joedow@chromium.org>
Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#35146}

modules/desktop_capture/BUILD.gn

@@ -77,9 +77,6 @@ if (rtc_include_tests) {
         "window_finder_unittest.cc",
       ]
       public_configs = [ ":x11_config" ]
-      if (is_win) {
-        deps += [ "../../rtc_base:win32" ]
-      }
     }
   }
 
@@ -515,7 +512,10 @@ rtc_library("desktop_capture_generic") {
       "d3d11.lib",
       "dxgi.lib",
     ]
-    deps += [ "../../rtc_base:win32" ]
+    deps += [
+      "../../rtc_base:rtc_base_approved",
+      "../../rtc_base:win32",
+    ]
   }
 
   absl_deps = [

modules/desktop_capture/cropping_window_capturer_win.cc

@@ -15,7 +15,7 @@
 #include "modules/desktop_capture/win/window_capture_utils.h"
 #include "rtc_base/logging.h"
 #include "rtc_base/trace_event.h"
-#include "rtc_base/win32.h"
+#include "rtc_base/win/windows_version.h"
 
 namespace webrtc {
 
@@ -196,7 +196,8 @@ void CroppingWindowCapturerWin::CaptureFrame() {
 }
 
 bool CroppingWindowCapturerWin::ShouldUseScreenCapturer() {
-  if (!rtc::IsWindows8OrLater() && window_capture_helper_.IsAeroEnabled()) {
+  if (rtc::rtc_win::GetVersion() < rtc::rtc_win::Version::VERSION_WIN8 &&
+      window_capture_helper_.IsAeroEnabled()) {
     return false;
   }
 

modules/desktop_capture/screen_capturer_integration_test.cc

@@ -33,7 +33,7 @@
 
 #if defined(WEBRTC_WIN)
 #include "modules/desktop_capture/win/screen_capturer_win_directx.h"
-#include "rtc_base/win32.h"
+#include "rtc_base/win/windows_version.h"
 #endif  // defined(WEBRTC_WIN)
 
 using ::testing::_;
@@ -338,7 +338,7 @@ TEST_F(ScreenCapturerIntegrationTest,
   // Bug https://bugs.chromium.org/p/webrtc/issues/detail?id=6844
   // TODO(zijiehe): Find the root cause of the border and failure, which cannot
   // reproduce on my dev machine.
-  if (rtc::IsWindows8OrLater()) {
+  if (rtc::rtc_win::GetVersion() >= rtc::rtc_win::Version::VERSION_WIN8) {
     return;
   }
   CreateMagnifierCapturer();
@@ -351,7 +351,7 @@ TEST_F(ScreenCapturerIntegrationTest, DISABLED_TwoMagnifierCapturers) {
   // Bug https://bugs.chromium.org/p/webrtc/issues/detail?id=6844
   // TODO(zijiehe): Find the root cause of the border and failure, which cannot
   // reproduce on my dev machine.
-  if (rtc::IsWindows8OrLater()) {
+  if (rtc::rtc_win::GetVersion() >= rtc::rtc_win::Version::VERSION_WIN8) {
     return;
   }
   CreateMagnifierCapturer();
@@ -362,7 +362,7 @@ TEST_F(ScreenCapturerIntegrationTest, DISABLED_TwoMagnifierCapturers) {
 
 TEST_F(ScreenCapturerIntegrationTest,
        DISABLED_MaybeCaptureUpdatedRegionWithDirectxCapturer) {
-  if (!rtc::IsWindows8OrLater()) {
+  if (rtc::rtc_win::GetVersion() < rtc::rtc_win::Version::VERSION_WIN8) {
     // ScreenCapturerWinGdi randomly returns blank screen, the root cause is
     // still unknown. Bug,
     // https://bugs.chromium.org/p/webrtc/issues/detail?id=6843.

modules/desktop_capture/win/window_capture_utils.cc

@@ -20,7 +20,7 @@
 #include "rtc_base/checks.h"
 #include "rtc_base/logging.h"
 #include "rtc_base/string_utils.h"
-#include "rtc_base/win32.h"
+#include "rtc_base/win/windows_version.h"
 
 namespace webrtc {
 
@@ -179,7 +179,8 @@ bool GetCroppedWindowRect(HWND window,
   // As of Windows8, transparent resize borders are added by the OS at
   // left/bottom/right sides of a resizeable window. If the cropped window
   // doesn't remove these borders, the background will be exposed a bit.
-  if (rtc::IsWindows8OrLater() || is_maximized) {
+  if (rtc::rtc_win::GetVersion() >= rtc::rtc_win::Version::VERSION_WIN8 ||
+      is_maximized) {
     // Only apply this cropping to windows with a resize border (otherwise,
     // it'd clip the edges of captured pop-up windows without this border).
     LONG style = GetWindowLong(window, GWL_STYLE);
@@ -311,7 +312,7 @@ WindowCaptureHelperWin::WindowCaptureHelperWin() {
             GetProcAddress(dwmapi_library_, "DwmGetWindowAttribute"));
   }
 
-  if (rtc::IsWindows10OrLater()) {
+  if (rtc::rtc_win::GetVersion() >= rtc::rtc_win::Version::VERSION_WIN10) {
     if (FAILED(::CoCreateInstance(__uuidof(VirtualDesktopManager), nullptr,
                                   CLSCTX_ALL,
                                   IID_PPV_ARGS(&virtual_desktop_manager_)))) {

modules/desktop_capture/win/window_capturer_win_gdi.cc

@@ -29,7 +29,7 @@
 #include "rtc_base/string_utils.h"
 #include "rtc_base/time_utils.h"
 #include "rtc_base/trace_event.h"
-#include "rtc_base/win32.h"
+#include "rtc_base/win/windows_version.h"
 #include "system_wrappers/include/metrics.h"
 
 namespace webrtc {
@@ -295,7 +295,7 @@ WindowCapturerWinGdi::CaptureResults WindowCapturerWinGdi::CaptureFrame(
   // on Windows 8.1 and later, PrintWindow is only used when the window is
   // occluded. When the window is not occluded, it is much faster to capture
   // the screen and to crop it to the window position and size.
-  if (rtc::IsWindows8OrLater()) {
+  if (rtc::rtc_win::GetVersion() >= rtc::rtc_win::Version::VERSION_WIN8) {
     // Special flag that makes PrintWindow to work on Windows 8.1 and later.
     // Indeed certain apps (e.g. those using DirectComposition rendering) can't
     // be captured using BitBlt or PrintWindow without this flag. Note that on

rtc_base/BUILD.gn

@@ -694,7 +694,10 @@ rtc_library("net_helpers") {
     deps += [ ":ifaddrs_android" ]
   }
   if (is_win) {
-    deps += [ ":win32" ]
+    deps += [
+      ":rtc_base_approved",
+      ":win32",
+    ]
   }
 }
 
@@ -1406,7 +1409,6 @@ if (rtc_include_tests) {
         ":socket_server",
         ":stringutils",
         ":testclient",
-        "containers:flat_map",
         ":threading",
         "../api:array_view",
         "../api:scoped_refptr",
@@ -1416,6 +1418,7 @@ if (rtc_include_tests) {
         "../test:fileutils",
         "../test:test_main",
         "../test:test_support",
+        "containers:flat_map",
         "containers:unittests",
         "memory:unittests",
         "synchronization:mutex",

rtc_base/net_helpers.cc

@@ -16,7 +16,7 @@
 #include <ws2spi.h>
 #include <ws2tcpip.h>
 
-#include "rtc_base/win32.h"
+#include "rtc_base/win/windows_version.h"
 #endif
 #if defined(WEBRTC_POSIX) && !defined(__native_client__)
 #include <arpa/inet.h>
@@ -70,10 +70,10 @@ bool HasIPv6Enabled() {
   // WinUWP always has IPv6 capability.
   return true;
 #elif defined(WEBRTC_WIN)
-  if (IsWindowsVistaOrLater()) {
+  if (rtc::rtc_win::GetVersion() >= rtc::rtc_win::Version::VERSION_VISTA) {
     return true;
   }
-  if (!IsWindowsXpOrLater()) {
+  if (rtc::rtc_win::GetVersion() < rtc::rtc_win::Version::VERSION_XP) {
     return false;
   }
   DWORD protbuff_size = 4096;

rtc_base/win32.h

@@ -20,11 +20,10 @@
 #define NOMINMAX
 #endif
 
-// clang-format off
+#include <winsock2.h>
-// clang formating would change include order.
+
-#include <winsock2.h> // must come first
+// Must be after winsock2.h.
 #include <windows.h>
-// clang-format on
 
 typedef int socklen_t;
 
@@ -39,66 +38,11 @@ typedef struct _TOKEN_MANDATORY_LABEL {
 
 #undef SetPort
 
-#include <string>
-
 namespace rtc {
 
 const char* win32_inet_ntop(int af, const void* src, char* dst, socklen_t size);
 int win32_inet_pton(int af, const char* src, void* dst);
 
-enum WindowsMajorVersions {
-  kWindows2000 = 5,
-  kWindowsVista = 6,
-  kWindows10 = 10,
-};
-
-#if !defined(WINUWP)
-bool GetOsVersion(int* major, int* minor, int* build);
-
-inline bool IsWindowsVistaOrLater() {
-  int major;
-  return (GetOsVersion(&major, nullptr, nullptr) && major >= kWindowsVista);
-}
-
-inline bool IsWindowsXpOrLater() {
-  int major, minor;
-  return (GetOsVersion(&major, &minor, nullptr) &&
-          (major >= kWindowsVista || (major == kWindows2000 && minor >= 1)));
-}
-
-inline bool IsWindows8OrLater() {
-  int major, minor;
-  return (GetOsVersion(&major, &minor, nullptr) &&
-          (major > kWindowsVista || (major == kWindowsVista && minor >= 2)));
-}
-
-inline bool IsWindows10OrLater() {
-  int major;
-  return (GetOsVersion(&major, nullptr, nullptr) && (major >= kWindows10));
-}
-
-#else
-
-// When targetting WinUWP the OS must be Windows 10 (or greater) as lesser
-// Windows OS targets are not supported.
-inline bool IsWindowsVistaOrLater() {
-  return true;
-}
-
-inline bool IsWindowsXpOrLater() {
-  return true;
-}
-
-inline bool IsWindows8OrLater() {
-  return true;
-}
-
-inline bool IsWindows10OrLater() {
-  return true;
-}
-
-#endif  // !defined(WINUWP)
-
 }  // namespace rtc
 
 #endif  // RTC_BASE_WIN32_H_