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xbox_controller_mac.mm
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// Copyright 2017 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 "device/gamepad/xbox_controller_mac.h"
#include <algorithm>
#include <cmath>
#include <limits>
#include <CoreFoundation/CoreFoundation.h>
#include <IOKit/IOCFPlugIn.h>
#include <IOKit/IOKitLib.h>
#include <IOKit/IOMessage.h>
#include <IOKit/usb/IOUSBLib.h>
#include <IOKit/usb/USB.h>
#include "base/bind.h"
#include "base/bind_helpers.h"
#include "base/location.h"
#include "base/logging.h"
#include "base/mac/foundation_util.h"
#include "base/mac/scoped_ioobject.h"
#include "base/sequenced_task_runner.h"
#include "base/strings/stringprintf.h"
#include "base/threading/thread_task_runner_handle.h"
namespace device {
namespace {
const int kXbox360ReadEndpoint = 1;
const int kXbox360ControlEndpoint = 2;
const int kXboxOneReadEndpoint = 2;
const int kXboxOneControlEndpoint = 1;
const double kXboxOneMaxEffectDurationMillis = 2500; // 2.5 seconds
enum {
STATUS_MESSAGE_BUTTONS = 0,
STATUS_MESSAGE_LED = 1,
// Apparently this message tells you if the rumble pack is disabled in the
// controller. If the rumble pack is disabled, vibration control messages
// have no effect.
STATUS_MESSAGE_RUMBLE = 3,
};
enum {
XBOX_ONE_STATUS_MESSAGE_BUTTONS = 0x20,
XBOX_ONE_STATUS_MESSAGE_GUIDE = 0x07
};
enum {
CONTROL_MESSAGE_SET_RUMBLE = 0,
CONTROL_MESSAGE_SET_LED = 1,
};
#pragma pack(push, 1)
struct Xbox360ButtonData {
bool dpad_up : 1;
bool dpad_down : 1;
bool dpad_left : 1;
bool dpad_right : 1;
bool start : 1;
bool back : 1;
bool stick_left_click : 1;
bool stick_right_click : 1;
bool bumper_left : 1;
bool bumper_right : 1;
bool guide : 1;
bool dummy1 : 1; // Always 0.
bool a : 1;
bool b : 1;
bool x : 1;
bool y : 1;
uint8_t trigger_left;
uint8_t trigger_right;
int16_t stick_left_x;
int16_t stick_left_y;
int16_t stick_right_x;
int16_t stick_right_y;
// Always 0.
uint32_t dummy2;
uint16_t dummy3;
};
struct Xbox360RumbleData {
uint8_t command;
uint8_t size;
uint8_t dummy1;
uint8_t big;
uint8_t little;
uint8_t dummy2[3];
};
struct XboxOneButtonData {
bool sync : 1;
bool dummy1 : 1; // Always 0.
bool start : 1;
bool back : 1;
bool a : 1;
bool b : 1;
bool x : 1;
bool y : 1;
bool dpad_up : 1;
bool dpad_down : 1;
bool dpad_left : 1;
bool dpad_right : 1;
bool bumper_left : 1;
bool bumper_right : 1;
bool stick_left_click : 1;
bool stick_right_click : 1;
uint16_t trigger_left;
uint16_t trigger_right;
int16_t stick_left_x;
int16_t stick_left_y;
int16_t stick_right_x;
int16_t stick_right_y;
};
struct XboxOneEliteButtonData {
// The Xbox One Elite controller supports button remapping and exposes both
// the mapped and unmapped data in the button state report.
XboxOneButtonData button_data;
XboxOneButtonData true_button_data;
int8_t paddle;
};
struct XboxOneGuideData {
uint8_t down;
uint8_t dummy1;
};
struct XboxOneRumbleData {
uint8_t command;
uint8_t dummy1;
uint8_t counter;
uint8_t size;
uint8_t mode;
uint8_t rumble_mask;
uint8_t trigger_left;
uint8_t trigger_right;
uint8_t strong_magnitude;
uint8_t weak_magnitude;
uint8_t duration;
uint8_t period;
uint8_t extra;
};
#pragma pack(pop)
static_assert(sizeof(Xbox360ButtonData) == 18, "Xbox360ButtonData wrong size");
static_assert(sizeof(Xbox360RumbleData) == 8, "Xbox360RumbleData wrong size");
static_assert(sizeof(XboxOneButtonData) == 14, "XboxOneButtonData wrong size");
static_assert(sizeof(XboxOneEliteButtonData) == 29,
"XboxOneEliteButtonData wrong size");
static_assert(sizeof(XboxOneGuideData) == 2, "XboxOneGuideData wrong size");
static_assert(sizeof(XboxOneRumbleData) == 13, "XboxOneRumbleData wrong size");
// From MSDN:
// http://msdn.microsoft.com/en-us/library/windows/desktop/ee417001(v=vs.85).aspx#dead_zone
const int16_t kLeftThumbDeadzone = 7849;
const int16_t kRightThumbDeadzone = 8689;
const uint8_t kXbox360TriggerDeadzone = 30;
const uint16_t kXboxOneTriggerMax = 1023;
const uint16_t kXboxOneTriggerDeadzone = 120;
void NormalizeAxis(int16_t x,
int16_t y,
int16_t deadzone,
float* x_out,
float* y_out) {
float x_val = x;
float y_val = y;
// Determine how far the stick is pushed.
float real_magnitude = std::sqrt(x_val * x_val + y_val * y_val);
// Check if the controller is outside a circular dead zone.
if (real_magnitude > deadzone) {
// Clip the magnitude at its expected maximum value.
float magnitude = std::min(32767.0f, real_magnitude);
// Adjust magnitude relative to the end of the dead zone.
magnitude -= deadzone;
// Normalize the magnitude with respect to its expected range giving a
// magnitude value of 0.0 to 1.0
float ratio = (magnitude / (32767 - deadzone)) / real_magnitude;
// Y is negated because xbox controllers have an opposite sign from
// the 'standard controller' recommendations.
*x_out = x_val * ratio;
*y_out = -y_val * ratio;
} else {
// If the controller is in the deadzone zero out the magnitude.
*x_out = *y_out = 0.0f;
}
}
float NormalizeTrigger(uint8_t value) {
return value < kXbox360TriggerDeadzone
? 0
: static_cast<float>(value - kXbox360TriggerDeadzone) /
(std::numeric_limits<uint8_t>::max() -
kXbox360TriggerDeadzone);
}
float NormalizeXboxOneTrigger(uint16_t value) {
return value < kXboxOneTriggerDeadzone
? 0
: static_cast<float>(value - kXboxOneTriggerDeadzone) /
(kXboxOneTriggerMax - kXboxOneTriggerDeadzone);
}
void NormalizeXbox360ButtonData(const Xbox360ButtonData& data,
XboxControllerMac::Data* normalized_data) {
normalized_data->buttons[0] = data.a;
normalized_data->buttons[1] = data.b;
normalized_data->buttons[2] = data.x;
normalized_data->buttons[3] = data.y;
normalized_data->buttons[4] = data.bumper_left;
normalized_data->buttons[5] = data.bumper_right;
normalized_data->buttons[6] = data.back;
normalized_data->buttons[7] = data.start;
normalized_data->buttons[8] = data.stick_left_click;
normalized_data->buttons[9] = data.stick_right_click;
normalized_data->buttons[10] = data.dpad_up;
normalized_data->buttons[11] = data.dpad_down;
normalized_data->buttons[12] = data.dpad_left;
normalized_data->buttons[13] = data.dpad_right;
normalized_data->buttons[14] = data.guide;
normalized_data->triggers[0] = NormalizeTrigger(data.trigger_left);
normalized_data->triggers[1] = NormalizeTrigger(data.trigger_right);
NormalizeAxis(data.stick_left_x, data.stick_left_y, kLeftThumbDeadzone,
&normalized_data->axes[0], &normalized_data->axes[1]);
NormalizeAxis(data.stick_right_x, data.stick_right_y, kRightThumbDeadzone,
&normalized_data->axes[2], &normalized_data->axes[3]);
}
void NormalizeXboxOneButtonData(const XboxOneButtonData& data,
XboxControllerMac::Data* normalized_data) {
normalized_data->buttons[0] = data.a;
normalized_data->buttons[1] = data.b;
normalized_data->buttons[2] = data.x;
normalized_data->buttons[3] = data.y;
normalized_data->buttons[4] = data.bumper_left;
normalized_data->buttons[5] = data.bumper_right;
normalized_data->buttons[6] = data.back;
normalized_data->buttons[7] = data.start;
normalized_data->buttons[8] = data.stick_left_click;
normalized_data->buttons[9] = data.stick_right_click;
normalized_data->buttons[10] = data.dpad_up;
normalized_data->buttons[11] = data.dpad_down;
normalized_data->buttons[12] = data.dpad_left;
normalized_data->buttons[13] = data.dpad_right;
normalized_data->triggers[0] = NormalizeXboxOneTrigger(data.trigger_left);
normalized_data->triggers[1] = NormalizeXboxOneTrigger(data.trigger_right);
NormalizeAxis(data.stick_left_x, data.stick_left_y, kLeftThumbDeadzone,
&normalized_data->axes[0], &normalized_data->axes[1]);
NormalizeAxis(data.stick_right_x, data.stick_right_y, kRightThumbDeadzone,
&normalized_data->axes[2], &normalized_data->axes[3]);
}
XboxControllerMac::ControllerType ControllerTypeFromIds(int vendor_id,
int product_id) {
if (vendor_id == XboxControllerMac::kVendorMicrosoft) {
switch (product_id) {
case XboxControllerMac::kProductXbox360Controller:
return XboxControllerMac::XBOX_360_CONTROLLER;
case XboxControllerMac::kProductXboxOneController2013:
return XboxControllerMac::XBOX_ONE_CONTROLLER_2013;
case XboxControllerMac::kProductXboxOneController2015:
return XboxControllerMac::XBOX_ONE_CONTROLLER_2015;
case XboxControllerMac::kProductXboxOneEliteController:
return XboxControllerMac::XBOX_ONE_ELITE_CONTROLLER;
case XboxControllerMac::kProductXboxOneSController:
return XboxControllerMac::XBOX_ONE_S_CONTROLLER;
default:
break;
}
}
return XboxControllerMac::UNKNOWN_CONTROLLER;
}
} // namespace
XboxControllerMac::XboxControllerMac(Delegate* delegate)
: delegate_(delegate) {}
XboxControllerMac::~XboxControllerMac() {
if (playing_effect_callback_)
RunCallbackOnMojoThread(
mojom::GamepadHapticsResult::GamepadHapticsResultPreempted);
if (source_)
CFRunLoopSourceInvalidate(source_);
if (interface_ && interface_is_open_)
(*interface_)->USBInterfaceClose(interface_);
if (device_ && device_is_open_)
(*device_)->USBDeviceClose(device_);
}
void XboxControllerMac::PlayEffect(
mojom::GamepadHapticEffectType type,
mojom::GamepadEffectParametersPtr params,
mojom::GamepadHapticsManager::PlayVibrationEffectOnceCallback callback) {
if (type !=
mojom::GamepadHapticEffectType::GamepadHapticEffectTypeDualRumble) {
// Only dual-rumble effects are supported.
std::move(callback).Run(
mojom::GamepadHapticsResult::GamepadHapticsResultNotSupported);
return;
}
int sequence_id = ++sequence_id_;
if (playing_effect_callback_) {
RunCallbackOnMojoThread(
mojom::GamepadHapticsResult::GamepadHapticsResultPreempted);
}
playing_effect_task_runner_ = base::ThreadTaskRunnerHandle::Get();
playing_effect_callback_ = std::move(callback);
PlayDualRumbleEffect(sequence_id, params->duration, params->start_delay,
params->strong_magnitude, params->weak_magnitude);
}
void XboxControllerMac::ResetVibration(
mojom::GamepadHapticsManager::ResetVibrationActuatorCallback callback) {
++sequence_id_;
if (playing_effect_callback_) {
SetVibration(0.0, 0.0);
RunCallbackOnMojoThread(
mojom::GamepadHapticsResult::GamepadHapticsResultPreempted);
}
std::move(callback).Run(
mojom::GamepadHapticsResult::GamepadHapticsResultComplete);
}
void XboxControllerMac::PlayDualRumbleEffect(int sequence_id,
double duration,
double start_delay,
double strong_magnitude,
double weak_magnitude) {
playing_effect_task_runner_->PostDelayedTask(
FROM_HERE,
base::BindOnce(&XboxControllerMac::StartVibration, base::Unretained(this),
sequence_id, duration, strong_magnitude, weak_magnitude),
base::TimeDelta::FromMillisecondsD(start_delay));
}
void XboxControllerMac::StartVibration(int sequence_id,
double duration,
double strong_magnitude,
double weak_magnitude) {
if (sequence_id != sequence_id_)
return;
SetVibration(strong_magnitude, weak_magnitude);
// The Xbox One controller rumble packet specifies a duration for the rumble
// effect with a maximum length of about 3 seconds. Support longer durations
// by sending a second rumble packet to extend the duration.
if (duration > kXboxOneMaxEffectDurationMillis) {
double remaining = duration - kXboxOneMaxEffectDurationMillis;
playing_effect_task_runner_->PostDelayedTask(
FROM_HERE,
base::BindOnce(&XboxControllerMac::StartVibration,
base::Unretained(this), sequence_id, remaining,
strong_magnitude, weak_magnitude),
base::TimeDelta::FromMillisecondsD(kXboxOneMaxEffectDurationMillis));
} else {
playing_effect_task_runner_->PostDelayedTask(
FROM_HERE,
base::BindOnce(&XboxControllerMac::StopVibration,
base::Unretained(this), sequence_id),
base::TimeDelta::FromMillisecondsD(duration));
}
}
void XboxControllerMac::StopVibration(int sequence_id) {
if (sequence_id != sequence_id_)
return;
SetVibration(0.0, 0.0);
RunCallbackOnMojoThread(
mojom::GamepadHapticsResult::GamepadHapticsResultComplete);
}
void XboxControllerMac::SetVibration(double strong_magnitude,
double weak_magnitude) {
// Clamp magnitudes to [0,1]
strong_magnitude =
std::max<double>(0.0, std::min<double>(strong_magnitude, 1.0));
weak_magnitude = std::max<double>(0.0, std::min<double>(weak_magnitude, 1.0));
if (controller_type_ == XBOX_360_CONTROLLER) {
WriteXbox360Rumble(static_cast<uint8_t>(strong_magnitude * 255.0),
static_cast<uint8_t>(weak_magnitude * 255.0));
} else if (controller_type_ == XBOX_ONE_CONTROLLER_2013 ||
controller_type_ == XBOX_ONE_CONTROLLER_2015 ||
controller_type_ == XBOX_ONE_ELITE_CONTROLLER ||
controller_type_ == XBOX_ONE_S_CONTROLLER) {
WriteXboxOneRumble(static_cast<uint8_t>(strong_magnitude * 255.0),
static_cast<uint8_t>(weak_magnitude * 255.0));
}
}
XboxControllerMac::OpenDeviceResult XboxControllerMac::OpenDevice(
io_service_t service) {
IOCFPlugInInterface** plugin;
SInt32 score; // Unused, but required for IOCreatePlugInInterfaceForService.
kern_return_t kr = IOCreatePlugInInterfaceForService(
service, kIOUSBDeviceUserClientTypeID, kIOCFPlugInInterfaceID, &plugin,
&score);
if (kr != KERN_SUCCESS)
return OPEN_FAILED;
base::mac::ScopedIOPluginInterface<IOCFPlugInInterface> plugin_ref(plugin);
HRESULT res = (*plugin)->QueryInterface(
plugin, CFUUIDGetUUIDBytes(kIOUSBDeviceInterfaceID320),
(LPVOID*)&device_);
if (!SUCCEEDED(res) || !device_)
return OPEN_FAILED;
UInt16 vendor_id;
kr = (*device_)->GetDeviceVendor(device_, &vendor_id);
if (kr != KERN_SUCCESS || vendor_id != kVendorMicrosoft)
return OPEN_FAILED;
UInt16 product_id;
kr = (*device_)->GetDeviceProduct(device_, &product_id);
if (kr != KERN_SUCCESS)
return OPEN_FAILED;
controller_type_ = ControllerTypeFromIds(vendor_id, product_id);
IOUSBFindInterfaceRequest request;
switch (controller_type_) {
case XBOX_360_CONTROLLER:
read_endpoint_ = kXbox360ReadEndpoint;
control_endpoint_ = kXbox360ControlEndpoint;
request.bInterfaceClass = 255;
request.bInterfaceSubClass = 93;
request.bInterfaceProtocol = 1;
request.bAlternateSetting = kIOUSBFindInterfaceDontCare;
break;
case XBOX_ONE_CONTROLLER_2013:
case XBOX_ONE_CONTROLLER_2015:
case XBOX_ONE_ELITE_CONTROLLER:
case XBOX_ONE_S_CONTROLLER:
read_endpoint_ = kXboxOneReadEndpoint;
control_endpoint_ = kXboxOneControlEndpoint;
request.bInterfaceClass = 255;
request.bInterfaceSubClass = 71;
request.bInterfaceProtocol = 208;
request.bAlternateSetting = kIOUSBFindInterfaceDontCare;
break;
default:
return OPEN_FAILED;
}
// Open the device and configure it.
kr = (*device_)->USBDeviceOpen(device_);
if (kr == kIOReturnExclusiveAccess) {
// USBDeviceOpen may fail with kIOReturnExclusiveAccess if the device has
// already been opened by another process. Usually this is temporary and
// the device will soon become available. Signal to the data fetcher that
// it should retry.
return OPEN_FAILED_EXCLUSIVE_ACCESS;
} else if (kr != KERN_SUCCESS) {
return OPEN_FAILED;
}
device_is_open_ = true;
// Xbox controllers have one configuration option which has configuration
// value 1. Try to set it and fail if it couldn't be configured.
IOUSBConfigurationDescriptorPtr config_desc;
kr = (*device_)->GetConfigurationDescriptorPtr(device_, 0, &config_desc);
if (kr != KERN_SUCCESS)
return OPEN_FAILED;
kr = (*device_)->SetConfiguration(device_, config_desc->bConfigurationValue);
if (kr != KERN_SUCCESS)
return OPEN_FAILED;
// The device has 4 interfaces. They are as follows:
// Protocol 1:
// - Endpoint 1 (in) : Controller events, including button presses.
// - Endpoint 2 (out): Rumble pack and LED control
// Protocol 2 has a single endpoint to read from a connected ChatPad device.
// Protocol 3 is used by a connected headset device.
// The device also has an interface on subclass 253, protocol 10 with no
// endpoints. It is unused.
//
// We don't currently support the ChatPad or headset, so protocol 1 is the
// only protocol we care about.
//
// For more detail, see
// https://github.com/Grumbel/xboxdrv/blob/master/PROTOCOL
io_iterator_t iter;
kr = (*device_)->CreateInterfaceIterator(device_, &request, &iter);
if (kr != KERN_SUCCESS)
return OPEN_FAILED;
base::mac::ScopedIOObject<io_iterator_t> iter_ref(iter);
// There should be exactly one USB interface which matches the requested
// settings.
io_service_t usb_interface = IOIteratorNext(iter);
if (!usb_interface)
return OPEN_FAILED;
// We need to make an InterfaceInterface to communicate with the device
// endpoint. This is the same process as earlier: first make a
// PluginInterface from the io_service then make the InterfaceInterface from
// that.
IOCFPlugInInterface** plugin_interface;
kr = IOCreatePlugInInterfaceForService(
usb_interface, kIOUSBInterfaceUserClientTypeID, kIOCFPlugInInterfaceID,
&plugin_interface, &score);
if (kr != KERN_SUCCESS || !plugin_interface)
return OPEN_FAILED;
base::mac::ScopedIOPluginInterface<IOCFPlugInInterface> interface_ref(
plugin_interface);
// Release the USB interface, and any subsequent interfaces returned by the
// iterator. (There shouldn't be any, but in case a future device does
// contain more interfaces, this will serve to avoid memory leaks.)
do {
IOObjectRelease(usb_interface);
} while ((usb_interface = IOIteratorNext(iter)));
// Actually create the interface.
res = (*plugin_interface)
->QueryInterface(plugin_interface,
CFUUIDGetUUIDBytes(kIOUSBInterfaceInterfaceID300),
(LPVOID*)&interface_);
if (!SUCCEEDED(res) || !interface_)
return OPEN_FAILED;
// Actually open the interface.
kr = (*interface_)->USBInterfaceOpen(interface_);
if (kr != KERN_SUCCESS)
return OPEN_FAILED;
interface_is_open_ = true;
CFRunLoopSourceRef source_ref;
kr = (*interface_)->CreateInterfaceAsyncEventSource(interface_, &source_ref);
if (kr != KERN_SUCCESS || !source_ref)
return OPEN_FAILED;
source_.reset(source_ref);
CFRunLoopAddSource(CFRunLoopGetCurrent(), source_, kCFRunLoopDefaultMode);
// The interface should have two pipes. Pipe 1 with direction kUSBIn and pipe
// 2 with direction kUSBOut. Both pipes should have type kUSBInterrupt.
uint8_t num_endpoints;
kr = (*interface_)->GetNumEndpoints(interface_, &num_endpoints);
if (kr != KERN_SUCCESS || num_endpoints < 2)
return OPEN_FAILED;
for (int i = 1; i <= 2; i++) {
uint8_t direction;
uint8_t number;
uint8_t transfer_type;
uint16_t max_packet_size;
uint8_t interval;
kr = (*interface_)
->GetPipeProperties(interface_, i, &direction, &number,
&transfer_type, &max_packet_size, &interval);
if (kr != KERN_SUCCESS || transfer_type != kUSBInterrupt)
return OPEN_FAILED;
if (i == read_endpoint_) {
if (direction != kUSBIn)
return OPEN_FAILED;
read_buffer_.reset(new uint8_t[max_packet_size]);
read_buffer_size_ = max_packet_size;
QueueRead();
} else if (i == control_endpoint_) {
if (direction != kUSBOut)
return OPEN_FAILED;
if (controller_type_ == XBOX_ONE_CONTROLLER_2013 ||
controller_type_ == XBOX_ONE_CONTROLLER_2015 ||
controller_type_ == XBOX_ONE_ELITE_CONTROLLER ||
controller_type_ == XBOX_ONE_S_CONTROLLER)
WriteXboxOneInit();
}
}
// The location ID is unique per controller, and can be used to track
// controllers through reconnections (though if a controller is detached from
// one USB hub and attached to another, the location ID will change).
kr = (*device_)->GetLocationID(device_, &location_id_);
if (kr != KERN_SUCCESS)
return OPEN_FAILED;
return OPEN_SUCCEEDED;
}
void XboxControllerMac::SetLEDPattern(LEDPattern pattern) {
led_pattern_ = pattern;
const UInt8 length = 3;
// This buffer will be released in WriteComplete when WritePipeAsync
// finishes.
UInt8* buffer = new UInt8[length];
buffer[0] = static_cast<UInt8>(CONTROL_MESSAGE_SET_LED);
buffer[1] = length;
buffer[2] = static_cast<UInt8>(pattern);
kern_return_t kr =
(*interface_)
->WritePipeAsync(interface_, control_endpoint_, buffer,
(UInt32)length, WriteComplete, buffer);
if (kr != KERN_SUCCESS) {
delete[] buffer;
IOError();
return;
}
}
int XboxControllerMac::GetVendorId() const {
switch (controller_type_) {
case XBOX_360_CONTROLLER:
case XBOX_ONE_CONTROLLER_2013:
case XBOX_ONE_CONTROLLER_2015:
case XBOX_ONE_ELITE_CONTROLLER:
case XBOX_ONE_S_CONTROLLER:
return kVendorMicrosoft;
default:
return 0;
}
}
int XboxControllerMac::GetProductId() const {
switch (controller_type_) {
case XBOX_360_CONTROLLER:
return kProductXbox360Controller;
case XBOX_ONE_CONTROLLER_2013:
return kProductXboxOneController2013;
case XBOX_ONE_CONTROLLER_2015:
return kProductXboxOneController2015;
case XBOX_ONE_ELITE_CONTROLLER:
return kProductXboxOneEliteController;
case XBOX_ONE_S_CONTROLLER:
return kProductXboxOneSController;
default:
return 0;
}
}
XboxControllerMac::ControllerType XboxControllerMac::GetControllerType() const {
return controller_type_;
}
std::string XboxControllerMac::GetControllerTypeString() const {
switch (controller_type_) {
case XBOX_360_CONTROLLER:
return "Xbox 360 Controller";
case XBOX_ONE_CONTROLLER_2013:
case XBOX_ONE_CONTROLLER_2015:
case XBOX_ONE_ELITE_CONTROLLER:
case XBOX_ONE_S_CONTROLLER:
return "Xbox One Controller";
default:
return "Unrecognized Controller";
}
}
std::string XboxControllerMac::GetIdString() const {
return base::StringPrintf("%s (STANDARD GAMEPAD Vendor: %04x Product: %04x)",
GetControllerTypeString().c_str(), GetVendorId(),
GetProductId());
}
// static
void XboxControllerMac::WriteComplete(void* context,
IOReturn result,
void* arg0) {
UInt8* buffer = static_cast<UInt8*>(context);
delete[] buffer;
// Ignoring any errors sending data, because they will usually only occur
// when the device is disconnected, in which case it really doesn't matter if
// the data got to the controller or not.
if (result != kIOReturnSuccess)
return;
}
// static
void XboxControllerMac::GotData(void* context, IOReturn result, void* arg0) {
size_t bytes_read = reinterpret_cast<size_t>(arg0);
XboxControllerMac* controller = static_cast<XboxControllerMac*>(context);
if (result != kIOReturnSuccess) {
// This will happen if the device was disconnected. The gamepad has
// probably been destroyed by a meteorite.
controller->IOError();
return;
}
if (controller->GetControllerType() == XBOX_360_CONTROLLER)
controller->ProcessXbox360Packet(bytes_read);
else
controller->ProcessXboxOnePacket(bytes_read);
// Queue up another read.
controller->QueueRead();
}
void XboxControllerMac::ProcessXbox360Packet(size_t length) {
if (length < 2)
return;
DCHECK(length <= read_buffer_size_);
if (length > read_buffer_size_) {
IOError();
return;
}
uint8_t* buffer = read_buffer_.get();
if (buffer[1] != length)
// Length in packet doesn't match length reported by USB.
return;
uint8_t type = buffer[0];
buffer += 2;
length -= 2;
switch (type) {
case STATUS_MESSAGE_BUTTONS: {
if (length != sizeof(Xbox360ButtonData))
return;
Xbox360ButtonData* data = reinterpret_cast<Xbox360ButtonData*>(buffer);
Data normalized_data;
NormalizeXbox360ButtonData(*data, &normalized_data);
if (delegate_)
delegate_->XboxControllerGotData(this, normalized_data);
break;
}
case STATUS_MESSAGE_LED:
if (length != 3)
return;
// The controller sends one of these messages every time the LED pattern
// is set, as well as once when it is plugged in.
if (led_pattern_ == LED_NUM_PATTERNS && buffer[0] < LED_NUM_PATTERNS)
led_pattern_ = static_cast<LEDPattern>(buffer[0]);
break;
default:
// Unknown packet: ignore!
break;
}
}
void XboxControllerMac::ProcessXboxOnePacket(size_t length) {
if (length < 2)
return;
DCHECK(length <= read_buffer_size_);
if (length > read_buffer_size_) {
IOError();
return;
}
uint8_t* buffer = read_buffer_.get();
uint8_t type = buffer[0];
buffer += 4;
length -= 4;
switch (type) {
case XBOX_ONE_STATUS_MESSAGE_BUTTONS: {
if (length != sizeof(XboxOneButtonData) &&
length != sizeof(XboxOneEliteButtonData))
return;
XboxOneButtonData* data = reinterpret_cast<XboxOneButtonData*>(buffer);
Data normalized_data;
NormalizeXboxOneButtonData(*data, &normalized_data);
if (delegate_)
delegate_->XboxControllerGotData(this, normalized_data);
break;
}
case XBOX_ONE_STATUS_MESSAGE_GUIDE: {
if (length != sizeof(XboxOneGuideData))
return;
XboxOneGuideData* data = reinterpret_cast<XboxOneGuideData*>(buffer);
delegate_->XboxControllerGotGuideData(this, data->down);
break;
}
default:
// Unknown packet: ignore!
break;
}
}
void XboxControllerMac::QueueRead() {
kern_return_t kr =
(*interface_)
->ReadPipeAsync(interface_, read_endpoint_, read_buffer_.get(),
read_buffer_size_, GotData, this);
if (kr != KERN_SUCCESS)
IOError();
}
void XboxControllerMac::IOError() {
if (delegate_)
delegate_->XboxControllerError(this);
}
void XboxControllerMac::WriteXbox360Rumble(uint8_t strong_magnitude,
uint8_t weak_magnitude) {
const UInt8 length = sizeof(Xbox360RumbleData);
// This buffer will be released in WriteComplete when WritePipeAsync
// finishes.
UInt8* buffer = new UInt8[length];
Xbox360RumbleData* rumble_data = reinterpret_cast<Xbox360RumbleData*>(buffer);
memset(buffer, 0, length);
rumble_data->command = 0x00; // Rumble
rumble_data->size = length;
// Set rumble intensities.
rumble_data->big = strong_magnitude;
rumble_data->little = weak_magnitude;
kern_return_t kr =
(*interface_)
->WritePipeAsync(interface_, control_endpoint_, buffer,
(UInt32)length, WriteComplete, buffer);
if (kr != KERN_SUCCESS) {
delete[] buffer;
IOError();
return;
}
}
void XboxControllerMac::WriteXboxOneInit() {
const UInt8 length = 5;
// This buffer will be released in WriteComplete when WritePipeAsync
// finishes.
UInt8* buffer = new UInt8[length];
buffer[0] = 0x05;
buffer[1] = 0x20;
buffer[2] = 0x00;
buffer[3] = 0x01;
buffer[4] = 0x00;
kern_return_t kr =
(*interface_)
->WritePipeAsync(interface_, control_endpoint_, buffer,
(UInt32)length, WriteComplete, buffer);
if (kr != KERN_SUCCESS) {
delete[] buffer;
IOError();
return;
}
}
void XboxControllerMac::WriteXboxOneRumble(uint8_t strong_magnitude,
uint8_t weak_magnitude) {
const UInt8 length = sizeof(XboxOneRumbleData);
// This buffer will be released in WriteComplete when WritePipeAsync
// finishes.
UInt8* buffer = new UInt8[length];
XboxOneRumbleData* rumble_data = reinterpret_cast<XboxOneRumbleData*>(buffer);
rumble_data->command = 0x09;
rumble_data->dummy1 = 0x00;
rumble_data->counter = counter_++;
rumble_data->size = 0x09;
rumble_data->mode = 0x00;
rumble_data->rumble_mask = 0x0f;
rumble_data->duration = 0xff;
rumble_data->period = 0x00;
rumble_data->extra = 0x00;
// Set rumble intensities.
rumble_data->trigger_left = 0x00;
rumble_data->trigger_right = 0x00;
rumble_data->strong_magnitude = strong_magnitude;
rumble_data->weak_magnitude = weak_magnitude;
kern_return_t kr =
(*interface_)
->WritePipeAsync(interface_, control_endpoint_, buffer,
(UInt32)length, WriteComplete, buffer);
if (kr != KERN_SUCCESS) {
delete[] buffer;
IOError();
return;
}
}
void XboxControllerMac::RunCallbackOnMojoThread(
mojom::GamepadHapticsResult result) {
if (playing_effect_task_runner_->RunsTasksInCurrentSequence()) {
DoRunCallback(std::move(playing_effect_callback_), result);
return;
}
playing_effect_task_runner_->PostTask(
FROM_HERE, base::BindOnce(&XboxControllerMac::DoRunCallback,
std::move(playing_effect_callback_), result));
}
// static
void XboxControllerMac::DoRunCallback(
mojom::GamepadHapticsManager::PlayVibrationEffectOnceCallback callback,
mojom::GamepadHapticsResult result) {
std::move(callback).Run(result);
}
} // namespace device