Move the Sudden Motion Sensor library into third_party.

BUG=118913
TEST=manual (see instructions at http://code.google.com/p/chromium/issues/detail?id=44654#c11)

Review URL: https://chromiumcodereview.appspot.com/9844020

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@129588 0039d316-1c4b-4281-b951-d872f2087c98

9 files changed, 598 insertions, 446 deletions

diff --git a/content/browser/device_orientation/DEPS b/content/browser/device_orientation/DEPS
index 0272f05..3e195fe 100644
--- a/content/browser/device_orientation/DEPS
+++ b/content/browser/device_orientation/DEPS
@@ -1,6 +1,6 @@
-include_rules = [

-  "-chrome",

-  "+chrome/browser/ui",  # for browser_test

-  "+chrome/test",  # for browser_test

-]

-

+include_rules = [
+  "-chrome",
+  "+chrome/browser/ui",  # for browser_test
+  "+chrome/test",  # for browser_test
+  "+third_party/sudden_motion_sensor",
+]
diff --git a/content/browser/device_orientation/accelerometer_mac.cc b/content/browser/device_orientation/accelerometer_mac.cc
index eec5751..d47f2dc 100644
--- a/content/browser/device_orientation/accelerometer_mac.cc
+++ b/content/browser/device_orientation/accelerometer_mac.cc
@@ -1,217 +1,17 @@
 // 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.
-//
-// This file is based on the SMSLib library.
-//
-// SMSLib Sudden Motion Sensor Access Library
-// Copyright (c) 2010 Suitable Systems
-// All rights reserved.
-//
-// Developed by: Daniel Griscom
-//               Suitable Systems
-//               http://www.suitable.com
-//
-// Permission is hereby granted, free of charge, to any person obtaining a
-// copy of this software and associated documentation files (the
-// "Software"), to deal with the Software without restriction, including
-// without limitation the rights to use, copy, modify, merge, publish,
-// distribute, sublicense, and/or sell copies of the Software, and to
-// permit persons to whom the Software is furnished to do so, subject to
-// the following conditions:
-//
-// - Redistributions of source code must retain the above copyright notice,
-// this list of conditions and the following disclaimers.
-//
-// - Redistributions in binary form must reproduce the above copyright
-// notice, this list of conditions and the following disclaimers in the
-// documentation and/or other materials provided with the distribution.
-//
-// - Neither the names of Suitable Systems nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this Software without specific prior written permission.
-//
-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
-// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
-// IN NO EVENT SHALL THE CONTRIBUTORS OR COPYRIGHT HOLDERS BE LIABLE FOR
-// ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
-// TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
-// SOFTWARE OR THE USE OR OTHER DEALINGS WITH THE SOFTWARE.
-//
-// For more information about SMSLib, see
-//    <http://www.suitable.com/tools/smslib.html>
-// or contact
-//    Daniel Griscom
-//    Suitable Systems
-//    1 Centre Street, Suite 204
-//    Wakefield, MA 01880
-//    (781) 665-0053
 
 #include "content/browser/device_orientation/accelerometer_mac.h"
 
 #include <math.h>
-#include <sys/sysctl.h>
 
 #include "base/logging.h"
-#include "base/mac/scoped_cftyperef.h"
-#include "base/memory/scoped_ptr.h"
 #include "content/browser/device_orientation/orientation.h"
+#include "third_party/sudden_motion_sensor/sudden_motion_sensor_mac.h"
 
 namespace device_orientation {
 
-struct AccelerometerMac::GenericMacbookSensor {
-  // Name of device to be read.
-  const char* service_name;
-
-  // Number of bytes of the axis data.
-  int axis_size;
-
-  // Default calibration value for zero g.
-  float zero_g;
-
-  // Default calibration value for one g (negative when axis is inverted).
-  float one_g;
-
-  // Kernel function index.
-  unsigned int function;
-
-  // Size of the sensor record to be sent/received.
-  unsigned int record_size;
-};
-
-struct AccelerometerMac::AxisData {
-  // Location of the first byte representing the axis in the sensor data.
-  int index;
-
-  // Axis inversion flag. The value changes often between models.
-  bool inverted;
-};
-
-// Sudden Motion Sensor descriptor.
-struct AccelerometerMac::SensorDescriptor {
-  // Prefix of model to be tested.
-  const char* model_name;
-
-  // Board id of model, or NULL if it doesn't matter.
-  const char* board_id;
-
-  // Axis-specific data (x,y,z order).
-  AxisData axis[3];
-};
-
-// Typical sensor parameters in MacBook models.
-const AccelerometerMac::GenericMacbookSensor
-  AccelerometerMac::kGenericSensor = {
-  "SMCMotionSensor", 2,
-  0, 251,
-  5, 40
-};
-
-// Supported sensor descriptors. Add entries here to enhance compatibility.
-// Tested in order; place more specific entries before more general ones. (All
-// non-tested entries from SMSLib have been removed.)
-const AccelerometerMac::SensorDescriptor
-    AccelerometerMac::kSupportedSensors[] = {
-  // Tested by tommyw on a 13" MacBook.
-  { "MacBook1,1",    NULL, { { 0, true  }, { 2, true  }, { 4, false } } },
-
-  // Tested by S.Selz. (via avi) on a 13" MacBook.
-  { "MacBook2,1",    NULL, { { 0, true  }, { 2, false }, { 4, true  } } },
-
-  // Tested by verhees on a 13" MacBook.
-  { "MacBook3,1",    NULL, { { 0, true  }, { 2, true  }, { 4, false } } },
-
-  // Tested by adlr on a 13" MacBook.
-  { "MacBook4,1",    NULL, { { 0, true  }, { 2, true  }, { 4, false } } },
-
-  // Tested by thakis on a 13" MacBook.
-  { "MacBook5,1",    NULL, { { 0, true  }, { 2, true  }, { 4, false } } },
-
-  // Tested by Adam Gerson (via avi) on a 13" MacBook.
-  { "MacBook5,2",    NULL, { { 0, false }, { 2, true  }, { 4, true  } } },
-
-  // Tested by tommyw on a 13" MacBook.
-  { "MacBook6,1",    NULL, { { 0, true  }, { 2, true  }, { 4, false } } },
-
-  // Tested by avi on a 13" MacBook.
-  { "MacBook7,1",    NULL, { { 0, true  }, { 2, true  }, { 4, false } } },
-
-  // Tested by crc on a 13" MacBook Air.
-  { "MacBookAir1,1", NULL, { { 0, true  }, { 2, true  }, { 4, false } } },
-
-  // Tested by sfiera, pjw on a 13" MacBook Air.
-  { "MacBookAir2,1", NULL, { { 0, true  }, { 2, true  }, { 4, false } } },
-
-  // Note:
-  // - MacBookAir3,1 (11" MacBook Air, late 2010)
-  // - MacBookAir3,2 (13" MacBook Air, late 2010)
-  // - MacBookAir4,1 (11" MacBook Air, mid 2011)
-  // - MacBookAir4,2 (13" MacBook Air, mid 2011)
-  // have no accelerometer sensors.
-
-  // Tested by crc on a 15" MacBook Pro.
-  { "MacBookPro1,1", NULL, { { 0, true  }, { 2, true  }, { 4, false } } },
-
-  // Tested by Raul Cuza (via avi) on a 17" MacBook Pro.
-  { "MacBookPro1,2", NULL, { { 0, true  }, { 2, true  }, { 4, false } } },
-
-  // Tested by L.V. (via avi) on a 17" MacBook Pro.
-  { "MacBookPro2,1", NULL, { { 0, true  }, { 2, false }, { 4, true  } } },
-
-  // Tested by leandrogracia on a 15" MacBook Pro.
-  { "MacBookPro2,2", NULL, { { 0, true  }, { 2, true  }, { 4, false } } },
-
-  // Tested by S.Som. (via avi) on a 17" MacBook Pro.
-  { "MacBookPro3,1", "Mac-F42388C8",
-                           { { 0, true  }, { 2, false }, { 4, true  } } },
-
-  // Tested by leandrogracia on a 15" MacBook Pro.
-  { "MacBookPro3,1", NULL, { { 0, false }, { 2, true  }, { 4, true  } } },
-
-  // Tested by leandrogracia on a 15" MacBook Pro.
-  // Tested by Eric Shapiro (via avi) on a 17" MacBook Pro.
-  { "MacBookPro4,1", NULL, { { 0, true  }, { 2, true  }, { 4, false } } },
-
-  // Tested by leandrogracia on a 15" MacBook Pro.
-  { "MacBookPro5,1", NULL, { { 0, false }, { 2, false }, { 4, false } } },
-
-  // Tested by S.Selz. (via avi) on a 17" MacBook Pro.
-  { "MacBookPro5,2", NULL, { { 0, false }, { 2, false }, { 4, false } } },
-
-  // Tested by dmaclach on a 15" MacBook Pro.
-  { "MacBookPro5,3", NULL, { { 2, false }, { 0, false }, { 4, true  } } },
-
-  // Tested by leandrogracia on a 15" MacBook Pro.
-  { "MacBookPro5,4", NULL, { { 0, false }, { 2, false }, { 4, false } } },
-
-  // Tested by leandrogracia on a 13" MacBook Pro.
-  { "MacBookPro5,5", NULL, { { 0, true  }, { 2, true  }, { 4, false } } },
-
-  // Tested by khom, leadpipe on a 17" MacBook Pro.
-  { "MacBookPro6,1", NULL, { { 0, false }, { 2, false }, { 4, false } } },
-
-  // Tested by leandrogracia on a 15" MacBook Pro.
-  { "MacBookPro6,2", NULL, { { 0, true  }, { 2, false }, { 4, true  } } },
-
-  // Tested by leandrogracia on a 13" MacBook Pro.
-  { "MacBookPro7,1", NULL, { { 0, true  }, { 2, true  }, { 4, false } } },
-
-  // Tested by avi on a 13" MacBook Pro.
-  { "MacBookPro8,1", NULL, { { 0, false }, { 2, false }, { 4, false } } },
-
-  // Tested by avi on a 15" MacBook Pro.
-  { "MacBookPro8,2", NULL, { { 0, false }, { 2, false }, { 4, false } } },
-
-  // Tested by avi on a 17" MacBook Pro.
-  { "MacBookPro8,3", NULL, { { 0, false }, { 2, false }, { 4, false } } },
-
-  // Generic MacBook accelerometer sensor data, to be used for future models
-  // until they can be tested and their data entered. Note that this generic
-  // configuration may well have problems with inverted axes.
-  { "",              NULL, { { 0, true  }, { 2, true  }, { 4, false } } }
-};
-
 // Create a AccelerometerMac object and return NULL if no valid sensor found.
 DataFetcher* AccelerometerMac::Create() {
   scoped_ptr<AccelerometerMac> accelerometer(new AccelerometerMac);
@@ -219,71 +19,27 @@ DataFetcher* AccelerometerMac::Create() {
 }
 
 AccelerometerMac::~AccelerometerMac() {
-  IOServiceClose(io_connection_);
 }
 
-AccelerometerMac::AccelerometerMac()
-    : sensor_(NULL),
-      io_connection_(0) {
+AccelerometerMac::AccelerometerMac() {
 }
 
-//  Retrieve per-axis accelerometer values.
+//  Retrieve per-axis orientation values.
 //
 //  Axes and angles are defined according to the W3C DeviceOrientation Draft.
 //  See here: http://dev.w3.org/geo/api/spec-source-orientation.html
 //
 //  Note: only beta and gamma angles are provided. Alpha is set to zero.
 //
-//  Returns false in case of error or non-properly initialized object.
+//  Returns false in case of error.
 //
 bool AccelerometerMac::GetOrientation(Orientation* orientation) {
-  DCHECK(sensor_);
-
-  // Reset output record memory buffer.
-  std::fill(output_record_.begin(), output_record_.end(), 0x00);
-
-  // Read record data from memory.
-  const size_t kInputSize = kGenericSensor.record_size;
-  size_t output_size = kGenericSensor.record_size;
-
-  if (IOConnectCallStructMethod(io_connection_, kGenericSensor.function,
-      static_cast<const char *>(&input_record_[0]), kInputSize,
-      &output_record_[0], &output_size) != KERN_SUCCESS) {
-    return false;
-  }
+  DCHECK(sudden_motion_sensor_.get());
 
-  // Calculate per-axis calibrated values.
+  // Retrieve per-axis calibrated values.
   float axis_value[3];
-
-  for (int i = 0; i < 3; ++i) {
-    int sensor_value = 0;
-    int size  = kGenericSensor.axis_size;
-    int index = sensor_->axis[i].index;
-
-    // Important Note: Little endian is assumed as this code is Mac-only
-    //                 and PowerPC is currently not supported.
-    memcpy(&sensor_value, &output_record_[index], size);
-
-    sensor_value = ExtendSign(sensor_value, size);
-
-    // Correct value using the current calibration.
-    axis_value[i] = static_cast<float>(sensor_value - kGenericSensor.zero_g) /
-                    kGenericSensor.one_g;
-
-    // Make sure we reject any NaN or infinite values.
-    if (!isfinite(axis_value[i]))
-      return false;
-
-    // Clamp value to the [-1, 1] range.
-    if (axis_value[i] < -1.0)
-      axis_value[i] = -1.0;
-    else if (axis_value[i] > 1.0)
-      axis_value[i] = 1.0;
-
-    // Apply axis inversion.
-    if (sensor_->axis[i].inverted)
-      axis_value[i] = -axis_value[i];
-  }
+  if (!sudden_motion_sensor_->ReadSensorValues(axis_value))
+    return false;
 
   // Transform the accelerometer values to W3C draft angles.
   //
@@ -337,122 +93,9 @@ bool AccelerometerMac::GetOrientation(Orientation* orientation) {
   return true;
 }
 
-// Probe the local hardware looking for a supported sensor device
-// and initialize an I/O connection to it.
 bool AccelerometerMac::Init() {
-  // Request model name from the kernel.
-  char local_model[32];  // size from SMSLib
-  size_t local_model_size = sizeof(local_model);
-  int params[2] = { CTL_HW, HW_MODEL };
-  if (sysctl(params, 2, local_model, &local_model_size, NULL, 0) != 0)
-    return NULL;
-
-  const SensorDescriptor* sensor_candidate = NULL;
-
-  // Look for the current model in the supported sensor list.
-  base::mac::ScopedCFTypeRef<CFDataRef> board_id_data;
-  const int kNumSensors = arraysize(kSupportedSensors);
-
-  for (int i = 0; i < kNumSensors; ++i) {
-    // Check if the supported sensor model name is a prefix
-    // of the local hardware model (empty names are accepted).
-    const char* p1 = kSupportedSensors[i].model_name;
-    for (const char* p2 = local_model; *p1 != '\0' && *p1 == *p2; ++p1, ++p2)
-      continue;
-    if (*p1 != '\0')
-      continue;
-
-    // Check the board id.
-    if (kSupportedSensors[i].board_id) {
-      if (!board_id_data.get()) {
-        CFMutableDictionaryRef dict =
-            IOServiceMatching("IOPlatformExpertDevice");
-        if (!dict)
-          continue;
-
-        io_service_t platform_expert =
-            IOServiceGetMatchingService(kIOMasterPortDefault, dict);
-        if (!platform_expert)
-          continue;
-
-        board_id_data.reset((CFDataRef)
-            IORegistryEntryCreateCFProperty(platform_expert,
-                                            CFSTR("board-id"),
-                                            kCFAllocatorDefault,
-                                            0));
-        IOObjectRelease(platform_expert);
-        if (!board_id_data.get())
-          continue;
-      }
-
-      if (strcmp(kSupportedSensors[i].board_id,
-                 (const char*)CFDataGetBytePtr(board_id_data)) != 0) {
-        continue;
-      }
-    }
-
-    // Local hardware found in the supported sensor list.
-    sensor_candidate = &kSupportedSensors[i];
-
-    // Get a dictionary of the services matching to the one in the sensor.
-    CFMutableDictionaryRef dict =
-        IOServiceMatching(kGenericSensor.service_name);
-    if (!dict)
-      continue;
-
-    // Get the first matching service.
-    io_service_t device = IOServiceGetMatchingService(kIOMasterPortDefault,
-                                                      dict);
-    if (!device)
-      continue;
-
-    // Try to open device.
-    kern_return_t result;
-    result = IOServiceOpen(device, mach_task_self(), 0, &io_connection_);
-    IOObjectRelease(device);
-    if (result != KERN_SUCCESS || io_connection_ == 0)
-      return false;
-
-    // Local sensor service confirmed by IOKit.
-    sensor_ = sensor_candidate;
-    break;
-  }
-
-  if (sensor_ == NULL)
-    return false;
-
-  // Allocate and initialize input/output records.
-  input_record_.resize(kGenericSensor.record_size, 0x01);
-  output_record_.resize(kGenericSensor.record_size, 0x00);
-
-  // Try to retrieve the current orientation.
-  Orientation test_orientation;
-  return GetOrientation(&test_orientation);
-}
-
-// Extend the sign of an integer of less than 32 bits to a 32-bit integer.
-int AccelerometerMac::ExtendSign(int value, size_t size) {
-  switch (size) {
-  case 1:
-    if (value & 0x00000080)
-      return value | 0xffffff00;
-    break;
-
-  case 2:
-    if (value & 0x00008000)
-      return value | 0xffff0000;
-    break;
-
-  case 3:
-    if (value & 0x00800000)
-      return value | 0xff000000;
-    break;
-
-  default:
-    LOG(FATAL) << "Invalid integer size for sign extension: " << size;
-  }
-
-  return value;
+  sudden_motion_sensor_.reset(SuddenMotionSensor::Create());
+  return sudden_motion_sensor_.get() != NULL;
 }
 
 }  // namespace device_orientation
diff --git a/content/browser/device_orientation/accelerometer_mac.h b/content/browser/device_orientation/accelerometer_mac.h
index 853b4d5..4413dd0 100644
--- a/content/browser/device_orientation/accelerometer_mac.h
+++ b/content/browser/device_orientation/accelerometer_mac.h
@@ -1,52 +1,6 @@
-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// 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.
-//
-// This file is based on the SMSLib library.
-//
-// SMSLib Sudden Motion Sensor Access Library
-// Copyright (c) 2010 Suitable Systems
-// All rights reserved.
-//
-// Developed by: Daniel Griscom
-//               Suitable Systems
-//               http://www.suitable.com
-//
-// Permission is hereby granted, free of charge, to any person obtaining a
-// copy of this software and associated documentation files (the
-// "Software"), to deal with the Software without restriction, including
-// without limitation the rights to use, copy, modify, merge, publish,
-// distribute, sublicense, and/or sell copies of the Software, and to
-// permit persons to whom the Software is furnished to do so, subject to
-// the following conditions:
-//
-// - Redistributions of source code must retain the above copyright notice,
-// this list of conditions and the following disclaimers.
-//
-// - Redistributions in binary form must reproduce the above copyright
-// notice, this list of conditions and the following disclaimers in the
-// documentation and/or other materials provided with the distribution.
-//
-// - Neither the names of Suitable Systems nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this Software without specific prior written permission.
-//
-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
-// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
-// IN NO EVENT SHALL THE CONTRIBUTORS OR COPYRIGHT HOLDERS BE LIABLE FOR
-// ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
-// TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
-// SOFTWARE OR THE USE OR OTHER DEALINGS WITH THE SOFTWARE.
-//
-// For more information about SMSLib, see
-//    <http://www.suitable.com/tools/smslib.html>
-// or contact
-//    Daniel Griscom
-//    Suitable Systems
-//    1 Centre Street, Suite 204
-//    Wakefield, MA 01880
-//    (781) 665-0053
 
 #ifndef CONTENT_BROWSER_DEVICE_ORIENTATION_ACCELEROMETER_MAC_H_
 #define CONTENT_BROWSER_DEVICE_ORIENTATION_ACCELEROMETER_MAC_H_
@@ -54,15 +8,14 @@
 
 #include <vector>
 
-#include <IOKit/IOKitLib.h>
-
 #include "base/compiler_specific.h"
+#include "base/memory/scoped_ptr.h"
 #include "content/browser/device_orientation/data_fetcher.h"
 
+class SuddenMotionSensor;
+
 namespace device_orientation {
 
-// Provides an easy-to-use interface to retrieve data
-// from the MacBook family accelerometer.
 class AccelerometerMac : public DataFetcher {
  public:
   static DataFetcher* Create();
@@ -76,28 +29,7 @@ class AccelerometerMac : public DataFetcher {
   AccelerometerMac();
   bool Init();
 
-  // Extend the sign of an integer of size bytes to a 32-bit one.
-  static int ExtendSign(int value, size_t size);
-
-  struct GenericMacbookSensor;
-  struct SensorDescriptor;
-  struct AxisData;
-
-  // Generic sensor data and list of supported sensors.
-  static const GenericMacbookSensor kGenericSensor;
-  static const SensorDescriptor kSupportedSensors[];
-
-  // Local sensor if supported, else NULL.
-  const SensorDescriptor* sensor_;
-
-  // IOKit connection to the local sensor.
-  io_connect_t io_connection_;
-
-  // Input memory used for sensor I/O.
-  std::vector<char> input_record_;
-
-  // Output memory used for sensor I/O.
-  std::vector<char> output_record_;
+  scoped_ptr<SuddenMotionSensor> sudden_motion_sensor_;
 };
 
 }  // namespace device_orientation
diff --git a/content/content_browser.gypi b/content/content_browser.gypi
index 7bd9870..32bdc65 100644
--- a/content/content_browser.gypi
+++ b/content/content_browser.gypi
@@ -826,6 +826,7 @@
       ],
       'dependencies': [
         '../base/base.gyp:closure_blocks_leopard_compat',
+        '../third_party/sudden_motion_sensor/sudden_motion_sensor.gyp:sudden_motion_sensor',
       ],
     }, { # OS!="mac"
       'dependencies': [
diff --git a/third_party/sudden_motion_sensor/LICENSE b/third_party/sudden_motion_sensor/LICENSE
new file mode 100644
index 0000000..83d4012
--- /dev/null
+++ b/third_party/sudden_motion_sensor/LICENSE
@@ -0,0 +1,43 @@
+SMSLib Sudden Motion Sensor Access Library
+Copyright (c) 2010 Suitable Systems
+All rights reserved.
+
+Developed by: Daniel Griscom
+              Suitable Systems
+              http://www.suitable.com
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the
+"Software"), to deal with the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimers.
+
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimers in the
+documentation and/or other materials provided with the distribution.
+
+- Neither the names of Suitable Systems nor the names of its
+contributors may be used to endorse or promote products derived from
+this Software without specific prior written permission.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE CONTRIBUTORS OR COPYRIGHT HOLDERS BE LIABLE FOR
+ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS WITH THE SOFTWARE.
+
+For more information about SMSLib, see
+   <http://www.suitable.com/tools/smslib.html>
+or contact
+   Daniel Griscom
+   Suitable Systems
+   1 Centre Street, Suite 204
+   Wakefield, MA 01880
+   (781) 665-0053
diff --git a/third_party/sudden_motion_sensor/README.chromium b/third_party/sudden_motion_sensor/README.chromium
new file mode 100644
index 0000000..afd594e
--- /dev/null
+++ b/third_party/sudden_motion_sensor/README.chromium
@@ -0,0 +1,19 @@
+Name: Sudden Motion Sensor library
+Short Name: smslib
+URL: http://www.suitable.com/tools/smslib.html
+Version: 0
+Date: 2010-08-26
+Revision:
+License: University of Illinois/NCSA Open Source License
+License File: LICENSE
+Security Critical: yes
+
+Description:
+A package for accessing the Sudden Motion Sensors in Mac laptops.
+Used for providing data to the Device Orientation API implementation.
+
+Local Modifications:
+The code was rewritten to follow Chromium code standards and practices
+(see the original code review at http://codereview.chromium.org/3169040/show)
+and completely new research was done on every mac laptop to obtain orientation
+information.
diff --git a/third_party/sudden_motion_sensor/sudden_motion_sensor.gyp b/third_party/sudden_motion_sensor/sudden_motion_sensor.gyp
new file mode 100644
index 0000000..897421b
--- /dev/null
+++ b/third_party/sudden_motion_sensor/sudden_motion_sensor.gyp
@@ -0,0 +1,19 @@
+# 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.
+
+{
+  'targets': [
+    {
+      'target_name': 'sudden_motion_sensor',
+      'type': 'static_library',
+      'dependencies': [
+        '<(DEPTH)/base/base.gyp:base',
+      ],
+      'sources': [
+        'sudden_motion_sensor_mac.cc',
+        'sudden_motion_sensor_mac.h',
+      ],
+    },
+  ],
+}
diff --git a/third_party/sudden_motion_sensor/sudden_motion_sensor_mac.cc b/third_party/sudden_motion_sensor/sudden_motion_sensor_mac.cc
new file mode 100644
index 0000000..869763f
--- /dev/null
+++ b/third_party/sudden_motion_sensor/sudden_motion_sensor_mac.cc
@@ -0,0 +1,400 @@
+// 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.
+//
+// This file is based on the SMSLib library.
+//
+// SMSLib Sudden Motion Sensor Access Library
+// Copyright (c) 2010 Suitable Systems
+// All rights reserved.
+//
+// Developed by: Daniel Griscom
+//               Suitable Systems
+//               http://www.suitable.com
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the
+// "Software"), to deal with the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to
+// permit persons to whom the Software is furnished to do so, subject to
+// the following conditions:
+//
+// - Redistributions of source code must retain the above copyright notice,
+// this list of conditions and the following disclaimers.
+//
+// - Redistributions in binary form must reproduce the above copyright
+// notice, this list of conditions and the following disclaimers in the
+// documentation and/or other materials provided with the distribution.
+//
+// - Neither the names of Suitable Systems nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this Software without specific prior written permission.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+// IN NO EVENT SHALL THE CONTRIBUTORS OR COPYRIGHT HOLDERS BE LIABLE FOR
+// ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+// TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+// SOFTWARE OR THE USE OR OTHER DEALINGS WITH THE SOFTWARE.
+//
+// For more information about SMSLib, see
+//    <http://www.suitable.com/tools/smslib.html>
+// or contact
+//    Daniel Griscom
+//    Suitable Systems
+//    1 Centre Street, Suite 204
+//    Wakefield, MA 01880
+//    (781) 665-0053
+
+#include "sudden_motion_sensor_mac.h"
+
+#include <math.h>
+#include <sys/sysctl.h>
+
+#include "base/logging.h"
+#include "base/mac/scoped_cftyperef.h"
+#include "base/memory/scoped_ptr.h"
+
+struct SuddenMotionSensor::GenericMacbookSensor {
+  // Name of device to be read.
+  const char* service_name;
+
+  // Number of bytes of the axis data.
+  int axis_size;
+
+  // Default calibration value for zero g.
+  float zero_g;
+
+  // Default calibration value for one g (negative when axis is inverted).
+  float one_g;
+
+  // Kernel function index.
+  unsigned int function;
+
+  // Size of the sensor record to be sent/received.
+  unsigned int record_size;
+};
+
+struct SuddenMotionSensor::AxisData {
+  // Location of the first byte representing the axis in the sensor data.
+  int index;
+
+  // Axis inversion flag. The value changes often between models.
+  bool inverted;
+};
+
+// Sudden Motion Sensor descriptor.
+struct SuddenMotionSensor::SensorDescriptor {
+  // Prefix of model to be tested.
+  const char* model_name;
+
+  // Board id of model, or NULL if it doesn't matter.
+  const char* board_id;
+
+  // Axis-specific data (x,y,z order).
+  AxisData axis[3];
+};
+
+// Typical sensor parameters in MacBook models.
+const SuddenMotionSensor::GenericMacbookSensor
+    SuddenMotionSensor::kGenericSensor = {
+  "SMCMotionSensor", 2,
+  0, 251,
+  5, 40
+};
+
+// Supported sensor descriptors. Add entries here to enhance compatibility.
+// Tested in order; place more specific entries before more general ones. (All
+// non-tested entries from SMSLib have been removed.)
+const SuddenMotionSensor::SensorDescriptor
+    SuddenMotionSensor::kSupportedSensors[] = {
+  // Tested by tommyw on a 13" MacBook.
+  { "MacBook1,1",    NULL, { { 0, true  }, { 2, true  }, { 4, false } } },
+
+  // Tested by S.Selz. (via avi) on a 13" MacBook.
+  { "MacBook2,1",    NULL, { { 0, true  }, { 2, false }, { 4, true  } } },
+
+  // Tested by verhees on a 13" MacBook.
+  { "MacBook3,1",    NULL, { { 0, true  }, { 2, true  }, { 4, false } } },
+
+  // Tested by adlr on a 13" MacBook.
+  { "MacBook4,1",    NULL, { { 0, true  }, { 2, true  }, { 4, false } } },
+
+  // Tested by thakis on a 13" MacBook.
+  { "MacBook5,1",    NULL, { { 0, true  }, { 2, true  }, { 4, false } } },
+
+  // Tested by Adam Gerson (via avi) on a 13" MacBook.
+  { "MacBook5,2",    NULL, { { 0, false }, { 2, true  }, { 4, true  } } },
+
+  // Tested by tommyw on a 13" MacBook.
+  { "MacBook6,1",    NULL, { { 0, true  }, { 2, true  }, { 4, false } } },
+
+  // Tested by avi on a 13" MacBook.
+  { "MacBook7,1",    NULL, { { 0, true  }, { 2, true  }, { 4, false } } },
+
+  // Tested by crc on a 13" MacBook Air.
+  { "MacBookAir1,1", NULL, { { 0, true  }, { 2, true  }, { 4, false } } },
+
+  // Tested by sfiera, pjw on a 13" MacBook Air.
+  { "MacBookAir2,1", NULL, { { 0, true  }, { 2, true  }, { 4, false } } },
+
+  // Note:
+  // - MacBookAir3,1 (11" MacBook Air, late 2010)
+  // - MacBookAir3,2 (13" MacBook Air, late 2010)
+  // - MacBookAir4,1 (11" MacBook Air, mid 2011)
+  // - MacBookAir4,2 (13" MacBook Air, mid 2011)
+  // have no accelerometer sensors.
+
+  // Tested by crc on a 15" MacBook Pro.
+  { "MacBookPro1,1", NULL, { { 0, true  }, { 2, true  }, { 4, false } } },
+
+  // Tested by Raul Cuza (via avi) on a 17" MacBook Pro.
+  { "MacBookPro1,2", NULL, { { 0, true  }, { 2, true  }, { 4, false } } },
+
+  // Tested by L.V. (via avi) on a 17" MacBook Pro.
+  { "MacBookPro2,1", NULL, { { 0, true  }, { 2, false }, { 4, true  } } },
+
+  // Tested by leandrogracia on a 15" MacBook Pro.
+  { "MacBookPro2,2", NULL, { { 0, true  }, { 2, true  }, { 4, false } } },
+
+  // Tested by S.Som. (via avi) on a 17" MacBook Pro.
+  { "MacBookPro3,1", "Mac-F42388C8",
+                           { { 0, true  }, { 2, false }, { 4, true  } } },
+
+  // Tested by leandrogracia on a 15" MacBook Pro.
+  { "MacBookPro3,1", NULL, { { 0, false }, { 2, true  }, { 4, true  } } },
+
+  // Tested by leandrogracia on a 15" MacBook Pro.
+  // Tested by Eric Shapiro (via avi) on a 17" MacBook Pro.
+  { "MacBookPro4,1", NULL, { { 0, true  }, { 2, true  }, { 4, false } } },
+
+  // Tested by leandrogracia on a 15" MacBook Pro.
+  { "MacBookPro5,1", NULL, { { 0, false }, { 2, false }, { 4, false } } },
+
+  // Tested by S.Selz. (via avi) on a 17" MacBook Pro.
+  { "MacBookPro5,2", NULL, { { 0, false }, { 2, false }, { 4, false } } },
+
+  // Tested by dmaclach on a 15" MacBook Pro.
+  { "MacBookPro5,3", NULL, { { 2, false }, { 0, false }, { 4, true  } } },
+
+  // Tested by leandrogracia on a 15" MacBook Pro.
+  { "MacBookPro5,4", NULL, { { 0, false }, { 2, false }, { 4, false } } },
+
+  // Tested by leandrogracia on a 13" MacBook Pro.
+  { "MacBookPro5,5", NULL, { { 0, true  }, { 2, true  }, { 4, false } } },
+
+  // Tested by khom, leadpipe on a 17" MacBook Pro.
+  { "MacBookPro6,1", NULL, { { 0, false }, { 2, false }, { 4, false } } },
+
+  // Tested by leandrogracia on a 15" MacBook Pro.
+  { "MacBookPro6,2", NULL, { { 0, true  }, { 2, false }, { 4, true  } } },
+
+  // Tested by leandrogracia on a 13" MacBook Pro.
+  { "MacBookPro7,1", NULL, { { 0, true  }, { 2, true  }, { 4, false } } },
+
+  // Tested by avi on a 13" MacBook Pro.
+  { "MacBookPro8,1", NULL, { { 0, false }, { 2, false }, { 4, false } } },
+
+  // Tested by avi on a 15" MacBook Pro.
+  { "MacBookPro8,2", NULL, { { 0, false }, { 2, false }, { 4, false } } },
+
+  // Tested by avi on a 17" MacBook Pro.
+  { "MacBookPro8,3", NULL, { { 0, false }, { 2, false }, { 4, false } } },
+
+  // Generic MacBook accelerometer sensor data, to be used for future models
+  // until they can be tested and their data entered. Note that this generic
+  // configuration may well have problems with inverted axes.
+  { "",              NULL, { { 0, true  }, { 2, true  }, { 4, false } } }
+};
+
+// Create a SuddenMotionSensor object and return NULL if no valid sensor found.
+SuddenMotionSensor* SuddenMotionSensor::Create() {
+  scoped_ptr<SuddenMotionSensor> accelerometer(new SuddenMotionSensor);
+  return accelerometer->Init() ? accelerometer.release() : NULL;
+}
+
+SuddenMotionSensor::~SuddenMotionSensor() {
+  IOServiceClose(io_connection_);
+}
+
+SuddenMotionSensor::SuddenMotionSensor()
+    : sensor_(NULL),
+      io_connection_(0) {
+}
+
+//  Retrieve per-axis accelerometer values.
+bool SuddenMotionSensor::ReadSensorValues(float axes[3]) {
+  DCHECK(sensor_);
+
+  // Reset output record memory buffer.
+  std::fill(output_record_.begin(), output_record_.end(), 0x00);
+
+  // Read record data from memory.
+  const size_t kInputSize = kGenericSensor.record_size;
+  size_t output_size = kGenericSensor.record_size;
+
+  if (IOConnectCallStructMethod(io_connection_, kGenericSensor.function,
+      static_cast<const char *>(&input_record_[0]), kInputSize,
+      &output_record_[0], &output_size) != KERN_SUCCESS) {
+    return false;
+  }
+
+  // Calculate per-axis calibrated values.
+  float axis_value[3];
+
+  for (int i = 0; i < 3; ++i) {
+    int sensor_value = 0;
+    int size  = kGenericSensor.axis_size;
+    int index = sensor_->axis[i].index;
+
+    // Important Note: Little endian is assumed as this code is Mac-only
+    //                 and PowerPC is currently not supported.
+    memcpy(&sensor_value, &output_record_[index], size);
+
+    sensor_value = ExtendSign(sensor_value, size);
+
+    // Correct value using the current calibration.
+    axis_value[i] = static_cast<float>(sensor_value - kGenericSensor.zero_g) /
+                    kGenericSensor.one_g;
+
+    // Make sure we reject any NaN or infinite values.
+    if (!isfinite(axis_value[i]))
+      return false;
+
+    // Clamp value to the [-1, 1] range.
+    if (axis_value[i] < -1.0)
+      axis_value[i] = -1.0;
+    else if (axis_value[i] > 1.0)
+      axis_value[i] = 1.0;
+
+    // Apply axis inversion.
+    if (sensor_->axis[i].inverted)
+      axis_value[i] = -axis_value[i];
+  }
+
+  axes[0] = axis_value[0];
+  axes[1] = axis_value[1];
+  axes[2] = axis_value[2];
+
+  return true;
+}
+
+// Probe the local hardware looking for a supported sensor device
+// and initialize an I/O connection to it.
+bool SuddenMotionSensor::Init() {
+  // Request model name from the kernel.
+  char local_model[32];  // size from SMSLib
+  size_t local_model_size = sizeof(local_model);
+  int params[2] = { CTL_HW, HW_MODEL };
+  if (sysctl(params, 2, local_model, &local_model_size, NULL, 0) != 0)
+    return NULL;
+
+  const SensorDescriptor* sensor_candidate = NULL;
+
+  // Look for the current model in the supported sensor list.
+  base::mac::ScopedCFTypeRef<CFDataRef> board_id_data;
+  const int kNumSensors = arraysize(kSupportedSensors);
+
+  for (int i = 0; i < kNumSensors; ++i) {
+    // Check if the supported sensor model name is a prefix
+    // of the local hardware model (empty names are accepted).
+    const char* p1 = kSupportedSensors[i].model_name;
+    for (const char* p2 = local_model; *p1 != '\0' && *p1 == *p2; ++p1, ++p2)
+      continue;
+    if (*p1 != '\0')
+      continue;
+
+    // Check the board id.
+    if (kSupportedSensors[i].board_id) {
+      if (!board_id_data.get()) {
+        CFMutableDictionaryRef dict =
+            IOServiceMatching("IOPlatformExpertDevice");
+        if (!dict)
+          continue;
+
+        io_service_t platform_expert =
+            IOServiceGetMatchingService(kIOMasterPortDefault, dict);
+        if (!platform_expert)
+          continue;
+
+        board_id_data.reset((CFDataRef)
+            IORegistryEntryCreateCFProperty(platform_expert,
+                                            CFSTR("board-id"),
+                                            kCFAllocatorDefault,
+                                            0));
+        IOObjectRelease(platform_expert);
+        if (!board_id_data.get())
+          continue;
+      }
+
+      if (strcmp(kSupportedSensors[i].board_id,
+                 (const char*)CFDataGetBytePtr(board_id_data)) != 0) {
+        continue;
+      }
+    }
+
+    // Local hardware found in the supported sensor list.
+    sensor_candidate = &kSupportedSensors[i];
+
+    // Get a dictionary of the services matching to the one in the sensor.
+    CFMutableDictionaryRef dict =
+        IOServiceMatching(kGenericSensor.service_name);
+    if (!dict)
+      continue;
+
+    // Get the first matching service.
+    io_service_t device = IOServiceGetMatchingService(kIOMasterPortDefault,
+                                                      dict);
+    if (!device)
+      continue;
+
+    // Try to open device.
+    kern_return_t result;
+    result = IOServiceOpen(device, mach_task_self(), 0, &io_connection_);
+    IOObjectRelease(device);
+    if (result != KERN_SUCCESS || io_connection_ == 0)
+      return false;
+
+    // Local sensor service confirmed by IOKit.
+    sensor_ = sensor_candidate;
+    break;
+  }
+
+  if (sensor_ == NULL)
+    return false;
+
+  // Allocate and initialize input/output records.
+  input_record_.resize(kGenericSensor.record_size, 0x01);
+  output_record_.resize(kGenericSensor.record_size, 0x00);
+
+  // Try to retrieve the current orientation.
+  float test_axes[3];
+  return ReadSensorValues(test_axes);
+}
+
+// Extend the sign of an integer of less than 32 bits to a 32-bit integer.
+int SuddenMotionSensor::ExtendSign(int value, size_t size) {
+  switch (size) {
+  case 1:
+    if (value & 0x00000080)
+      return value | 0xffffff00;
+    break;
+
+  case 2:
+    if (value & 0x00008000)
+      return value | 0xffff0000;
+    break;
+
+  case 3:
+    if (value & 0x00800000)
+      return value | 0xff000000;
+    break;
+
+  default:
+    LOG(FATAL) << "Invalid integer size for sign extension: " << size;
+  }
+
+  return value;
+}
diff --git a/third_party/sudden_motion_sensor/sudden_motion_sensor_mac.h b/third_party/sudden_motion_sensor/sudden_motion_sensor_mac.h
new file mode 100644
index 0000000..ba70b39
--- /dev/null
+++ b/third_party/sudden_motion_sensor/sudden_motion_sensor_mac.h
@@ -0,0 +1,95 @@
+// 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.
+//
+// This file is based on the SMSLib library.
+//
+// SMSLib Sudden Motion Sensor Access Library
+// Copyright (c) 2010 Suitable Systems
+// All rights reserved.
+//
+// Developed by: Daniel Griscom
+//               Suitable Systems
+//               http://www.suitable.com
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the
+// "Software"), to deal with the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to
+// permit persons to whom the Software is furnished to do so, subject to
+// the following conditions:
+//
+// - Redistributions of source code must retain the above copyright notice,
+// this list of conditions and the following disclaimers.
+//
+// - Redistributions in binary form must reproduce the above copyright
+// notice, this list of conditions and the following disclaimers in the
+// documentation and/or other materials provided with the distribution.
+//
+// - Neither the names of Suitable Systems nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this Software without specific prior written permission.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+// IN NO EVENT SHALL THE CONTRIBUTORS OR COPYRIGHT HOLDERS BE LIABLE FOR
+// ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+// TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+// SOFTWARE OR THE USE OR OTHER DEALINGS WITH THE SOFTWARE.
+//
+// For more information about SMSLib, see
+//    <http://www.suitable.com/tools/smslib.html>
+// or contact
+//    Daniel Griscom
+//    Suitable Systems
+//    1 Centre Street, Suite 204
+//    Wakefield, MA 01880
+//    (781) 665-0053
+
+#ifndef SUDDEN_MOTION_SENSOR_H_
+#define SUDDEN_MOTION_SENSOR_H_
+#pragma once
+
+#include <vector>
+
+#include <IOKit/IOKitLib.h>
+
+// Provides an easy-to-use interface to retrieve data
+// from the MacBook family accelerometer.
+class SuddenMotionSensor {
+ public:
+  static SuddenMotionSensor* Create();
+  bool ReadSensorValues(float axes[3]);
+  ~SuddenMotionSensor();
+
+ private:
+  SuddenMotionSensor();
+  bool Init();
+
+  // Extend the sign of an integer of size bytes to a 32-bit one.
+  static int ExtendSign(int value, size_t size);
+
+  struct GenericMacbookSensor;
+  struct SensorDescriptor;
+  struct AxisData;
+
+  // Generic sensor data and list of supported sensors.
+  static const GenericMacbookSensor kGenericSensor;
+  static const SensorDescriptor kSupportedSensors[];
+
+  // Local sensor if supported, else NULL.
+  const SensorDescriptor* sensor_;
+
+  // IOKit connection to the local sensor.
+  io_connect_t io_connection_;
+
+  // Input memory used for sensor I/O.
+  std::vector<char> input_record_;
+
+  // Output memory used for sensor I/O.
+  std::vector<char> output_record_;
+};
+
+#endif  // SUDDEN_MOTION_SENSOR_H_