Factor out HIDDevice.
This commit is contained in:
Steve Checkoway
@@ -0,0 +1,239 @@
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#include "global.h"
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#include "HIDDevice.h"
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#include "RageUtil.h"
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HIDDevice::HIDDevice() : m_Interface( NULL ), m_Queue( NULL ), m_bRunning( false )
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{
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}
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HIDDevice::~HIDDevice()
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{
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if( m_Queue )
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{
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CFRunLoopSourceRef runLoopSource;
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if( m_bRunning )
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CALL( m_Queue, stop );
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if( (runLoopSource = CALL(m_Queue, getAsyncEventSource)) )
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{
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mach_port_deallocate( mach_task_self(), CALL(m_Queue, getAsyncPort) );
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CFRunLoopSourceInvalidate( runLoopSource );
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CFRelease( runLoopSource );
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}
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CALL( m_Queue, dispose );
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CALL( m_Queue, Release );
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}
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if( m_Interface )
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{
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CALL( m_Interface, close );
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CALL( m_Interface, Release );
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}
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}
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bool HIDDevice::Open( io_object_t device )
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{
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IOReturn ret;
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CFMutableDictionaryRef properties;
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kern_return_t result;
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result = IORegistryEntryCreateCFProperties( device, &properties, kCFAllocatorDefault, kNilOptions );
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if ( result != KERN_SUCCESS || !properties )
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{
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LOG->Warn( "Couldn't get properties." );
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return false;
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}
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CFStringRef productRef = (CFStringRef)CFDictionaryGetValue( properties, CFSTR(kIOHIDProductKey) );
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if( productRef )
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{
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m_sDescription = CFStringGetCStringPtr( productRef, CFStringGetSystemEncoding() );
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}
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else
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{
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CFTypeRef vidRef = (CFTypeRef)CFDictionaryGetValue( properties, CFSTR(kIOHIDVendorIDKey) );
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CFTypeRef pidRef = (CFTypeRef)CFDictionaryGetValue( properties, CFSTR(kIOHIDProductIDKey) );
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int vid, pid;
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if( vidRef && !IntValue(vidRef, &vid) )
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vid = 0;
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if( pidRef && !IntValue(pidRef, &pid) )
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pid = 0;
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m_sDescription = ssprintf( "%04x:%04x", vid, pid );
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}
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CFArrayRef logicalDevices;
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if ( !(logicalDevices = (CFArrayRef)CFDictionaryGetValue(properties, CFSTR(kIOHIDElementKey))) )
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{
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CFRelease( properties );
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return false;
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}
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CFRange r = { 0, CFArrayGetCount(logicalDevices) };
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CFArrayApplyFunction( logicalDevices, r, HIDDevice::AddLogicalDevice, this );
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CFRelease( properties );
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// Create the interface
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IOCFPlugInInterface **plugInInterface;
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HRESULT hresult;
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SInt32 score;
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ret = IOCreatePlugInInterfaceForService( device, kIOHIDDeviceUserClientTypeID,
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kIOCFPlugInInterfaceID, &plugInInterface, &score );
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if( ret != kIOReturnSuccess )
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{
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PrintIOErr( ret, "Failed to create plugin interface." );
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return false;
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}
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// Call a method of the plugin to create the device interface
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CFUUIDBytes bytes = CFUUIDGetUUIDBytes( kIOHIDDeviceInterfaceID );
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hresult = CALL( plugInInterface, QueryInterface, bytes, (void **)&m_Interface );
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CALL( plugInInterface, Release );
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if( hresult != S_OK )
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{
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LOG->Warn( "Couldn't get device interface from plugin interface." );
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m_Interface = NULL;
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return false;
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}
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// open the interface
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if( (ret = CALL(m_Interface, open, 0)) != kIOReturnSuccess )
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{
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PrintIOErr( ret, "Failed to open the interface." );
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CALL( m_Interface, Release );
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m_Interface = NULL;
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return false;
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}
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// alloc/create queue
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m_Queue = CALL( m_Interface, allocQueue );
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if( !m_Queue )
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{
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LOG->Warn( "Couldn't allocate a queue." );
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return false;
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}
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if( (ret = CALL(m_Queue, create, 0, 32)) != kIOReturnSuccess )
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{
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PrintIOErr( ret, "Failed to create the queue." );
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CALL( m_Queue, Release );
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m_Queue = NULL;
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return false;
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}
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Open();
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return true;
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}
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void HIDDevice::StartQueue( CFRunLoopRef loopRef, IOHIDCallbackFunction callback, void *target, int refCon )
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{
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CFRunLoopSourceRef runLoopSource;
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// This creates a run loop source and a mach port. They are released in the dtor.
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IOReturn ret = CALL( m_Queue, createAsyncEventSource, &runLoopSource );
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if( ret != kIOReturnSuccess )
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{
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PrintIOErr( ret, "Failed to create async event source." );
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return;
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}
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if( !CFRunLoopContainsSource(loopRef, runLoopSource, kCFRunLoopDefaultMode) )
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CFRunLoopAddSource( loopRef, runLoopSource, kCFRunLoopDefaultMode );
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CALL( m_Queue, setEventCallout, callback, target, (void *)refCon );
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if( ret != kIOReturnSuccess )
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{
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PrintIOErr( ret, "Failed to set the call back." );
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return;
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}
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// start the queue
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ret = CALL( m_Queue, start );
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if( ret != kIOReturnSuccess )
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{
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PrintIOErr( ret, "Failed to start the queue." );
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return;
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}
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m_bRunning = true;
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}
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void HIDDevice::AddLogicalDevice( const void *value, void *context )
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{
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if( CFGetTypeID(CFTypeRef(value)) != CFDictionaryGetTypeID() )
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return;
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CFDictionaryRef dict = CFDictionaryRef( value );
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HIDDevice *This = (HIDDevice *)context;
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CFArrayRef elements;
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CFTypeRef object;
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int usage, usagePage;
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CFTypeID numID = CFNumberGetTypeID();
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// Get usage page
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object = CFDictionaryGetValue( dict, CFSTR(kIOHIDElementUsagePageKey) );
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if( !object || CFGetTypeID(object) != numID || !IntValue(object, &usagePage) )
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return;
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// Get usage
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object = CFDictionaryGetValue( dict, CFSTR(kIOHIDElementUsageKey) );
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if( !object || CFGetTypeID(object) != numID || !IntValue(object, &usage) )
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return;
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if( !(elements = (CFArrayRef)CFDictionaryGetValue( dict, CFSTR(kIOHIDElementKey))) )
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return;
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if( !This->AddLogicalDevice(usagePage, usage) )
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return;
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CFRange r = { 0, CFArrayGetCount(elements) };
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CFArrayApplyFunction( elements, r, HIDDevice::AddElement, This );
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}
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void HIDDevice::AddElement( const void *value, void *context )
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{
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if( CFGetTypeID(CFTypeRef(value)) != CFDictionaryGetTypeID() )
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return;
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CFDictionaryRef dict = CFDictionaryRef( value );
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HIDDevice *This = (HIDDevice *)context;
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CFTypeRef object;
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CFTypeID numID = CFNumberGetTypeID();
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int cookie, usage, usagePage;
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CFArrayRef elements;
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// Recursively add elements
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if( (elements = (CFArrayRef)CFDictionaryGetValue(dict, CFSTR(kIOHIDElementKey))) )
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{
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CFRange r = { 0, CFArrayGetCount(elements) };
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CFArrayApplyFunction( elements, r, AddElement, context );
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}
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// Get usage page
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object = CFDictionaryGetValue( dict, CFSTR(kIOHIDElementUsagePageKey) );
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if( !object || CFGetTypeID(object) != numID || !IntValue(object, &usagePage) )
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return;
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// Get usage
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object = CFDictionaryGetValue( dict, CFSTR(kIOHIDElementUsageKey) );
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if( !object || CFGetTypeID(object) != numID || !IntValue(object, &usage) )
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return;
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// Get cookie
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object = CFDictionaryGetValue( dict, CFSTR(kIOHIDElementCookieKey) );
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if( !object || CFGetTypeID(object) != numID || !IntValue(object, &cookie) )
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return;
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This->AddElement( usagePage, usage, cookie, dict );
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}
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