Fix compilation of audio_manager_win.cc in Win Release.

media/audio/win/audio_manager_win.cc

 // Copyright (c) 2010 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 "media/audio/audio_io.h"
 
 #include <windows.h>
 #include <objbase.h>  // This has to be before initguid.h
 #include <initguid.h>
 #include <mmsystem.h>
@@ skipping 29 matching lines @@
 const int kWinMaxChannels = 8;
 
 const int kWinMaxInputChannels = 2;
 // We use 3 buffers for recording audio so that if a recording callback takes
 // some time to return we won't lose audio. More buffers while recording are
 // ok because they don't introduce any delay in recording, unlike in playback
 // where you first need to fill in that number of buffers before starting to
 // play.
 const int kNumInputBuffers = 3;
 
+int GetVersionPartAsInt(DWORDLONG num) {
+  return static_cast<int>(num & 0xffff);
+}
+
 // Returns a string containing the given device's description and installed
 // driver version.
 string16 GetDeviceAndDriverInfo(HDEVINFO device_info,
                                 SP_DEVINFO_DATA* device_data) {
   // Save the old install params setting and set a flag for the
   // SetupDiBuildDriverInfoList below to return only the installed drivers.
   SP_DEVINSTALL_PARAMS old_device_install_params;
   old_device_install_params.cbSize = sizeof(old_device_install_params);
   SetupDiGetDeviceInstallParams(device_info, device_data,
                                 &old_device_install_params);
   SP_DEVINSTALL_PARAMS device_install_params = old_device_install_params;
   device_install_params.FlagsEx |= DI_FLAGSEX_INSTALLEDDRIVER;
   SetupDiSetDeviceInstallParams(device_info, device_data,
                                 &device_install_params);
 
   SP_DRVINFO_DATA driver_data;
   driver_data.cbSize = sizeof(driver_data);
   string16 device_and_driver_info;
   if (SetupDiBuildDriverInfoList(device_info, device_data,
                                  SPDIT_COMPATDRIVER)) {
     if (SetupDiEnumDriverInfo(device_info, device_data, SPDIT_COMPATDRIVER, 0,
                               &driver_data)) {
       DWORDLONG version = driver_data.DriverVersion;
       device_and_driver_info = string16(driver_data.Description) + L" v" +
-          base::IntToString16((version >> 48) & 0xffff) + L"." +
-          base::IntToString16((version >> 32) & 0xffff) + L"." +
-          base::IntToString16((version >> 16) & 0xffff) + L"." +
-          base::IntToString16(version & 0xffff);
+          base::IntToString16(GetVersionPartAsInt((version >> 48))) + L"." +
+          base::IntToString16(GetVersionPartAsInt((version >> 32))) + L"." +
+          base::IntToString16(GetVersionPartAsInt((version >> 16))) + L"." +
+          base::IntToString16(GetVersionPartAsInt(version));
     }
     SetupDiDestroyDriverInfoList(device_info, device_data, SPDIT_COMPATDRIVER);
   }
 
   SetupDiSetDeviceInstallParams(device_info, device_data,
                                 &old_device_install_params);
 
   return device_and_driver_info;
 }
 
@@ skipping 117 matching lines @@
       return GetDeviceAndDriverInfo(device_info, &device_data);
   }
 
   return string16();
 }
 
 // static
 AudioManager* AudioManager::CreateAudioManager() {
   return new AudioManagerWin();
 }