diff options
Diffstat (limited to 'chromium/content/browser/gamepad/gamepad_platform_data_fetcher_mac.mm')
-rw-r--r-- | chromium/content/browser/gamepad/gamepad_platform_data_fetcher_mac.mm | 441 |
1 files changed, 441 insertions, 0 deletions
diff --git a/chromium/content/browser/gamepad/gamepad_platform_data_fetcher_mac.mm b/chromium/content/browser/gamepad/gamepad_platform_data_fetcher_mac.mm new file mode 100644 index 00000000000..51524d7f523 --- /dev/null +++ b/chromium/content/browser/gamepad/gamepad_platform_data_fetcher_mac.mm @@ -0,0 +1,441 @@ +// 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. + +#include "content/browser/gamepad/gamepad_platform_data_fetcher_mac.h" + +#include "base/mac/foundation_util.h" +#include "base/mac/scoped_nsobject.h" +#include "base/strings/string16.h" +#include "base/strings/string_util.h" +#include "base/strings/utf_string_conversions.h" +#include "base/time/time.h" + +#import <Foundation/Foundation.h> +#include <IOKit/hid/IOHIDKeys.h> + +using WebKit::WebGamepad; +using WebKit::WebGamepads; + +namespace content { + +namespace { + +NSDictionary* DeviceMatching(uint32_t usage_page, uint32_t usage) { + return [NSDictionary dictionaryWithObjectsAndKeys: + [NSNumber numberWithUnsignedInt:usage_page], + base::mac::CFToNSCast(CFSTR(kIOHIDDeviceUsagePageKey)), + [NSNumber numberWithUnsignedInt:usage], + base::mac::CFToNSCast(CFSTR(kIOHIDDeviceUsageKey)), + nil]; +} + +float NormalizeAxis(CFIndex value, CFIndex min, CFIndex max) { + return (2.f * (value - min) / static_cast<float>(max - min)) - 1.f; +} + +// http://www.usb.org/developers/hidpage +const uint32_t kGenericDesktopUsagePage = 0x01; +const uint32_t kButtonUsagePage = 0x09; +const uint32_t kJoystickUsageNumber = 0x04; +const uint32_t kGameUsageNumber = 0x05; +const uint32_t kMultiAxisUsageNumber = 0x08; +const uint32_t kAxisMinimumUsageNumber = 0x30; +const uint32_t kAxisMaximumUsageNumber = 0x35; + +} // namespace + +GamepadPlatformDataFetcherMac::GamepadPlatformDataFetcherMac() + : enabled_(true) { + memset(associated_, 0, sizeof(associated_)); + + xbox_fetcher_.reset(new XboxDataFetcher(this)); + if (!xbox_fetcher_->RegisterForNotifications()) + xbox_fetcher_.reset(); + + hid_manager_ref_.reset(IOHIDManagerCreate(kCFAllocatorDefault, + kIOHIDOptionsTypeNone)); + if (CFGetTypeID(hid_manager_ref_) != IOHIDManagerGetTypeID()) { + enabled_ = false; + return; + } + + base::scoped_nsobject<NSArray> criteria([[NSArray alloc] initWithObjects: + DeviceMatching(kGenericDesktopUsagePage, kJoystickUsageNumber), + DeviceMatching(kGenericDesktopUsagePage, kGameUsageNumber), + DeviceMatching(kGenericDesktopUsagePage, kMultiAxisUsageNumber), + nil]); + IOHIDManagerSetDeviceMatchingMultiple( + hid_manager_ref_, + base::mac::NSToCFCast(criteria)); + + RegisterForNotifications(); +} + +void GamepadPlatformDataFetcherMac::RegisterForNotifications() { + // Register for plug/unplug notifications. + IOHIDManagerRegisterDeviceMatchingCallback( + hid_manager_ref_, + &DeviceAddCallback, + this); + IOHIDManagerRegisterDeviceRemovalCallback( + hid_manager_ref_, + DeviceRemoveCallback, + this); + + // Register for value change notifications. + IOHIDManagerRegisterInputValueCallback( + hid_manager_ref_, + ValueChangedCallback, + this); + + IOHIDManagerScheduleWithRunLoop( + hid_manager_ref_, + CFRunLoopGetMain(), + kCFRunLoopDefaultMode); + + enabled_ = IOHIDManagerOpen(hid_manager_ref_, + kIOHIDOptionsTypeNone) == kIOReturnSuccess; + + if (xbox_fetcher_) + xbox_fetcher_->RegisterForNotifications(); +} + +void GamepadPlatformDataFetcherMac::UnregisterFromNotifications() { + IOHIDManagerUnscheduleFromRunLoop( + hid_manager_ref_, + CFRunLoopGetCurrent(), + kCFRunLoopDefaultMode); + IOHIDManagerClose(hid_manager_ref_, kIOHIDOptionsTypeNone); + if (xbox_fetcher_) + xbox_fetcher_->UnregisterFromNotifications(); +} + +void GamepadPlatformDataFetcherMac::PauseHint(bool pause) { + if (pause) + UnregisterFromNotifications(); + else + RegisterForNotifications(); +} + +GamepadPlatformDataFetcherMac::~GamepadPlatformDataFetcherMac() { + UnregisterFromNotifications(); +} + +GamepadPlatformDataFetcherMac* +GamepadPlatformDataFetcherMac::InstanceFromContext(void* context) { + return reinterpret_cast<GamepadPlatformDataFetcherMac*>(context); +} + +void GamepadPlatformDataFetcherMac::DeviceAddCallback(void* context, + IOReturn result, + void* sender, + IOHIDDeviceRef ref) { + InstanceFromContext(context)->DeviceAdd(ref); +} + +void GamepadPlatformDataFetcherMac::DeviceRemoveCallback(void* context, + IOReturn result, + void* sender, + IOHIDDeviceRef ref) { + InstanceFromContext(context)->DeviceRemove(ref); +} + +void GamepadPlatformDataFetcherMac::ValueChangedCallback(void* context, + IOReturn result, + void* sender, + IOHIDValueRef ref) { + InstanceFromContext(context)->ValueChanged(ref); +} + +void GamepadPlatformDataFetcherMac::AddButtonsAndAxes(NSArray* elements, + size_t slot) { + WebGamepad& pad = data_.items[slot]; + AssociatedData& associated = associated_[slot]; + CHECK(!associated.is_xbox); + + pad.axesLength = 0; + pad.buttonsLength = 0; + pad.timestamp = 0; + memset(pad.axes, 0, sizeof(pad.axes)); + memset(pad.buttons, 0, sizeof(pad.buttons)); + + for (id elem in elements) { + IOHIDElementRef element = reinterpret_cast<IOHIDElementRef>(elem); + uint32_t usagePage = IOHIDElementGetUsagePage(element); + uint32_t usage = IOHIDElementGetUsage(element); + if (IOHIDElementGetType(element) == kIOHIDElementTypeInput_Button && + usagePage == kButtonUsagePage) { + uint32_t button_index = usage - 1; + if (button_index < WebGamepad::buttonsLengthCap) { + associated.hid.button_elements[button_index] = element; + pad.buttonsLength = std::max(pad.buttonsLength, button_index + 1); + } + } + else if (IOHIDElementGetType(element) == kIOHIDElementTypeInput_Misc) { + uint32_t axis_index = usage - kAxisMinimumUsageNumber; + if (axis_index < WebGamepad::axesLengthCap) { + associated.hid.axis_minimums[axis_index] = + IOHIDElementGetLogicalMin(element); + associated.hid.axis_maximums[axis_index] = + IOHIDElementGetLogicalMax(element); + associated.hid.axis_elements[axis_index] = element; + pad.axesLength = std::max(pad.axesLength, axis_index + 1); + } + } + } +} + +size_t GamepadPlatformDataFetcherMac::GetEmptySlot() { + // Find a free slot for this device. + for (size_t slot = 0; slot < WebGamepads::itemsLengthCap; ++slot) { + if (!data_.items[slot].connected) + return slot; + } + return WebGamepads::itemsLengthCap; +} + +size_t GamepadPlatformDataFetcherMac::GetSlotForDevice(IOHIDDeviceRef device) { + for (size_t slot = 0; slot < WebGamepads::itemsLengthCap; ++slot) { + // If we already have this device, and it's already connected, don't do + // anything now. + if (data_.items[slot].connected && + !associated_[slot].is_xbox && + associated_[slot].hid.device_ref == device) + return WebGamepads::itemsLengthCap; + } + return GetEmptySlot(); +} + +size_t GamepadPlatformDataFetcherMac::GetSlotForXboxDevice( + XboxController* device) { + for (size_t slot = 0; slot < WebGamepads::itemsLengthCap; ++slot) { + if (associated_[slot].is_xbox && + associated_[slot].xbox.location_id == device->location_id()) { + if (data_.items[slot].connected) { + // The device is already connected. No idea why we got a second "device + // added" call, but let's not add it twice. + DCHECK_EQ(associated_[slot].xbox.device, device); + return WebGamepads::itemsLengthCap; + } else { + // A device with the same location ID was previously connected, so put + // it in the same slot. + return slot; + } + } + } + return GetEmptySlot(); +} + +void GamepadPlatformDataFetcherMac::DeviceAdd(IOHIDDeviceRef device) { + using base::mac::CFToNSCast; + using base::mac::CFCastStrict; + + if (!enabled_) + return; + + // Find an index for this device. + size_t slot = GetSlotForDevice(device); + + // We can't handle this many connected devices. + if (slot == WebGamepads::itemsLengthCap) + return; + + NSNumber* vendor_id = CFToNSCast(CFCastStrict<CFNumberRef>( + IOHIDDeviceGetProperty(device, CFSTR(kIOHIDVendorIDKey)))); + NSNumber* product_id = CFToNSCast(CFCastStrict<CFNumberRef>( + IOHIDDeviceGetProperty(device, CFSTR(kIOHIDProductIDKey)))); + NSString* product = CFToNSCast(CFCastStrict<CFStringRef>( + IOHIDDeviceGetProperty(device, CFSTR(kIOHIDProductKey)))); + int vendor_int = [vendor_id intValue]; + int product_int = [product_id intValue]; + + char vendor_as_str[5], product_as_str[5]; + snprintf(vendor_as_str, sizeof(vendor_as_str), "%04x", vendor_int); + snprintf(product_as_str, sizeof(product_as_str), "%04x", product_int); + associated_[slot].hid.mapper = + GetGamepadStandardMappingFunction(vendor_as_str, product_as_str); + + NSString* ident = [NSString stringWithFormat: + @"%@ (%sVendor: %04x Product: %04x)", + product, + associated_[slot].hid.mapper ? "STANDARD GAMEPAD " : "", + vendor_int, + product_int]; + NSData* as16 = [ident dataUsingEncoding:NSUTF16LittleEndianStringEncoding]; + + const size_t kOutputLengthBytes = sizeof(data_.items[slot].id); + memset(&data_.items[slot].id, 0, kOutputLengthBytes); + [as16 getBytes:data_.items[slot].id + length:kOutputLengthBytes - sizeof(WebKit::WebUChar)]; + + base::ScopedCFTypeRef<CFArrayRef> elements( + IOHIDDeviceCopyMatchingElements(device, NULL, kIOHIDOptionsTypeNone)); + AddButtonsAndAxes(CFToNSCast(elements), slot); + + associated_[slot].hid.device_ref = device; + data_.items[slot].connected = true; + if (slot >= data_.length) + data_.length = slot + 1; +} + +void GamepadPlatformDataFetcherMac::DeviceRemove(IOHIDDeviceRef device) { + if (!enabled_) + return; + + // Find the index for this device. + size_t slot; + for (slot = 0; slot < WebGamepads::itemsLengthCap; ++slot) { + if (data_.items[slot].connected && + !associated_[slot].is_xbox && + associated_[slot].hid.device_ref == device) + break; + } + DCHECK(slot < WebGamepads::itemsLengthCap); + // Leave associated device_ref so that it will be reconnected in the same + // location. Simply mark it as disconnected. + data_.items[slot].connected = false; +} + +void GamepadPlatformDataFetcherMac::ValueChanged(IOHIDValueRef value) { + if (!enabled_) + return; + + IOHIDElementRef element = IOHIDValueGetElement(value); + IOHIDDeviceRef device = IOHIDElementGetDevice(element); + + // Find device slot. + size_t slot; + for (slot = 0; slot < data_.length; ++slot) { + if (data_.items[slot].connected && + !associated_[slot].is_xbox && + associated_[slot].hid.device_ref == device) + break; + } + if (slot == data_.length) + return; + + WebGamepad& pad = data_.items[slot]; + AssociatedData& associated = associated_[slot]; + + // Find and fill in the associated button event, if any. + for (size_t i = 0; i < pad.buttonsLength; ++i) { + if (associated.hid.button_elements[i] == element) { + pad.buttons[i] = IOHIDValueGetIntegerValue(value) ? 1.f : 0.f; + pad.timestamp = std::max(pad.timestamp, IOHIDValueGetTimeStamp(value)); + return; + } + } + + // Find and fill in the associated axis event, if any. + for (size_t i = 0; i < pad.axesLength; ++i) { + if (associated.hid.axis_elements[i] == element) { + pad.axes[i] = NormalizeAxis(IOHIDValueGetIntegerValue(value), + associated.hid.axis_minimums[i], + associated.hid.axis_maximums[i]); + pad.timestamp = std::max(pad.timestamp, IOHIDValueGetTimeStamp(value)); + return; + } + } +} + +void GamepadPlatformDataFetcherMac::XboxDeviceAdd(XboxController* device) { + if (!enabled_) + return; + + size_t slot = GetSlotForXboxDevice(device); + + // We can't handle this many connected devices. + if (slot == WebGamepads::itemsLengthCap) + return; + + device->SetLEDPattern( + (XboxController::LEDPattern)(XboxController::LED_FLASH_TOP_LEFT + slot)); + + NSString* ident = + [NSString stringWithFormat: + @"Xbox 360 Controller (STANDARD GAMEPAD Vendor: %04x Product: %04x)", + device->GetProductId(), device->GetVendorId()]; + NSData* as16 = [ident dataUsingEncoding:NSUTF16StringEncoding]; + const size_t kOutputLengthBytes = sizeof(data_.items[slot].id); + memset(&data_.items[slot].id, 0, kOutputLengthBytes); + [as16 getBytes:data_.items[slot].id + length:kOutputLengthBytes - sizeof(WebKit::WebUChar)]; + + associated_[slot].is_xbox = true; + associated_[slot].xbox.device = device; + associated_[slot].xbox.location_id = device->location_id(); + data_.items[slot].connected = true; + data_.items[slot].axesLength = 4; + data_.items[slot].buttonsLength = 17; + data_.items[slot].timestamp = 0; + if (slot >= data_.length) + data_.length = slot + 1; +} + +void GamepadPlatformDataFetcherMac::XboxDeviceRemove(XboxController* device) { + if (!enabled_) + return; + + // Find the index for this device. + size_t slot; + for (slot = 0; slot < WebGamepads::itemsLengthCap; ++slot) { + if (data_.items[slot].connected && + associated_[slot].is_xbox && + associated_[slot].xbox.device == device) + break; + } + DCHECK(slot < WebGamepads::itemsLengthCap); + // Leave associated location id so that the controller will be reconnected in + // the same slot if it is plugged in again. Simply mark it as disconnected. + data_.items[slot].connected = false; +} + +void GamepadPlatformDataFetcherMac::XboxValueChanged( + XboxController* device, const XboxController::Data& data) { + // Find device slot. + size_t slot; + for (slot = 0; slot < data_.length; ++slot) { + if (data_.items[slot].connected && + associated_[slot].is_xbox && + associated_[slot].xbox.device == device) + break; + } + if (slot == data_.length) + return; + + WebGamepad& pad = data_.items[slot]; + + for (size_t i = 0; i < 6; i++) { + pad.buttons[i] = data.buttons[i] ? 1.0f : 0.0f; + } + pad.buttons[6] = data.triggers[0]; + pad.buttons[7] = data.triggers[1]; + for (size_t i = 8; i < 17; i++) { + pad.buttons[i] = data.buttons[i - 2] ? 1.0f : 0.0f; + } + for (size_t i = 0; i < arraysize(data.axes); i++) { + pad.axes[i] = data.axes[i]; + } + + pad.timestamp = base::TimeTicks::Now().ToInternalValue(); +} + +void GamepadPlatformDataFetcherMac::GetGamepadData(WebGamepads* pads, bool) { + if (!enabled_ && !xbox_fetcher_) { + pads->length = 0; + return; + } + + // Copy to the current state to the output buffer, using the mapping + // function, if there is one available. + pads->length = WebGamepads::itemsLengthCap; + for (size_t i = 0; i < WebGamepads::itemsLengthCap; ++i) { + if (!associated_[i].is_xbox && associated_[i].hid.mapper) + associated_[i].hid.mapper(data_.items[i], &pads->items[i]); + else + pads->items[i] = data_.items[i]; + } +} + +} // namespace content |