device/hid/hid_utils_mac.cc

   1 // Copyright (c) 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "device/hid/hid_utils_mac.h"
   6
   7 #include "base/basictypes.h"
   8 #include "base/logging.h"
   9 #include "base/mac/foundation_util.h"
  10 #include "base/strings/sys_string_conversions.h"
  11
  12 #if defined(OS_MACOSX)
  13 #include <CoreFoundation/CoreFoundation.h>
  14 #include <IOKit/hid/IOHIDManager.h>
  15 #endif
  16
  17 namespace device {
  18
  19 bool GetHidIntProperty(IOHIDDeviceRef device,
  20                        CFStringRef key,
  21                        int32_t* result) {
  22   CFNumberRef ref = base::mac::CFCast<CFNumberRef>(
  23       IOHIDDeviceGetProperty(device, key));
  24   return ref && CFNumberGetValue(ref, kCFNumberSInt32Type, result);
  25 }
  26
  27 bool GetHidStringProperty(IOHIDDeviceRef device,
  28                           CFStringRef key,
  29                           std::string* result) {
  30   CFStringRef ref = base::mac::CFCast<CFStringRef>(
  31       IOHIDDeviceGetProperty(device, key));
  32   if (!ref) {
  33     return false;
  34   }
  35   *result = base::SysCFStringRefToUTF8(ref);
  36   return true;
  37 }
  38
  39 }  // namespace device