From 8a3354d11bbd799b39e3e1677cda0f02ca9cb61e Mon Sep 17 00:00:00 2001
From: Lysann Schlegel <lysann.kessler@gmail.com>
Date: Sat, 8 Dec 2012 13:11:36 +0100
Subject: [PATCH] OSX 10.6 compatibility

---
 src/CMakeLists.txt       |  6 ++++--
 src/os_mac/os_mac.h      |  7 +++++++
 src/os_mac/os_mac.m      | 26 +++++++++++++++++++++++++-
 src/os_mac/os_mac_find.m | 18 +++++++++++++++++-
 4 files changed, 53 insertions(+), 4 deletions(-)

diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 9b69837..d3c9f4e 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -58,18 +58,20 @@ if(WIN32)
 elseif(LINUX)
 	target_link_libraries(wiiuse m ${BLUEZ_LIBRARIES})
 elseif(APPLE)
+	# link libraries
 	find_library(IOBLUETOOTH_FRAMEWORK
 		NAMES
 		IOBluetooth)
-	
 	find_library(COREFOUNDATION_FRAMEWORK
 		NAMES
 		CoreFoundation)
-		
 	find_library(FOUNDATION_FRAMEWORK
 		NAMES
 		Foundation)
 	target_link_libraries(wiiuse ${IOBLUETOOTH_FRAMEWORK} ${COREFOUNDATION_FRAMEWORK} ${FOUNDATION_FRAMEWORK})
+
+	# do not link Objective-C runtime with clang
+	set_target_properties(wiiuse PROPERTIES XCODE_ATTRIBUTE_CLANG_LINK_OBJC_RUNTIME "NO")
 endif()
 
 set_property(TARGET
diff --git a/src/os_mac/os_mac.h b/src/os_mac/os_mac.h
index 7537f7b..11c05a3 100644
--- a/src/os_mac/os_mac.h
+++ b/src/os_mac/os_mac.h
@@ -42,6 +42,13 @@
 #import "../wiiuse_internal.h"
 
 
+#if defined(MAC_OS_X_VERSION_10_7) && MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_7
+#define WIIUSE_MAC_OS_X_VERSION_10_7_OR_ABOVE 1
+#else
+#define WIIUSE_MAC_OS_X_VERSION_10_7_OR_ABOVE 0
+#endif
+
+
 @interface WiiuseWiimote : NSObject<IOBluetoothL2CAPChannelDelegate> {
 	wiimote* wm; // reference to the C wiimote struct
 	
diff --git a/src/os_mac/os_mac.m b/src/os_mac/os_mac.m
index 517441a..f843ab8 100644
--- a/src/os_mac/os_mac.m
+++ b/src/os_mac/os_mac.m
@@ -243,7 +243,12 @@
 	byte* data = (byte*) data_;
 	
 	// This is done in case the control channel woke up this handler
-	if(!data || ([channel PSM] == kBluetoothL2CAPPSMHIDControl)) {
+#if WIIUSE_MAC_OS_X_VERSION_10_7_OR_ABOVE
+	BluetoothL2CAPPSM psm = channel.PSM;
+#else
+	BluetoothL2CAPPSM psm = [channel getPSM];
+#endif
+	if(!data || (psm == kBluetoothL2CAPPSMHIDControl)) {
 		return;
 	}
 	
@@ -255,6 +260,25 @@
 	[newData release];
 }
 
+#if !WIIUSE_MAC_OS_X_VERSION_10_7_OR_ABOVE
+// the following delegate methods were required on 10.6. They are here to get rid of 10.6 compiler warnings.
+- (void)l2capChannelOpenComplete:(IOBluetoothL2CAPChannel*)l2capChannel status:(IOReturn)error {
+	/* no-op */
+}
+- (void)l2capChannelClosed:(IOBluetoothL2CAPChannel*)l2capChannel {
+	/* no-op */
+}
+- (void)l2capChannelReconfigured:(IOBluetoothL2CAPChannel*)l2capChannel {
+	/* no-op */
+}
+- (void)l2capChannelWriteComplete:(IOBluetoothL2CAPChannel*)l2capChannel refcon:(void*)refcon status:(IOReturn)error {
+	/* no-op */
+}
+- (void)l2capChannelQueueSpaceAvailable:(IOBluetoothL2CAPChannel*)l2capChannel {
+	/* no-op */
+}
+#endif
+
 @end
 
 #pragma mark -
diff --git a/src/os_mac/os_mac_find.m b/src/os_mac/os_mac_find.m
index d576a19..4107a3e 100644
--- a/src/os_mac/os_mac_find.m
+++ b/src/os_mac/os_mac_find.m
@@ -43,12 +43,19 @@
 #import <IOBluetooth/objc/IOBluetoothDevice.h>
 #import <IOBluetooth/objc/IOBluetoothHostController.h>
 #import <IOBluetooth/objc/IOBluetoothDeviceInquiry.h>
+#if !WIIUSE_MAC_OS_X_VERSION_10_7_OR_ABOVE
+#import <IOBluetooth/IOBluetoothUserLib.h> // IOBluetoothLocalDeviceGetPowerState
+#endif
 
 
 #pragma mark -
 #pragma mark WiiuseDeviceInquiry
 
+#if WIIUSE_MAC_OS_X_VERSION_10_7_OR_ABOVE
 @interface WiiuseDeviceInquiry : NSObject<IOBluetoothDeviceInquiryDelegate> {
+#else
+@interface WiiuseDeviceInquiry : NSObject {
+#endif
 	wiimote** wiimotes;
 	NSUInteger maxDevices;
 	int timeout;
@@ -68,8 +75,17 @@
 - (id) initWithMemory:(wiimote**)wiimotes_ maxDevices:(int)maxDevices_ timeout:(int)timeout_ {
 	self = [super init];
 	if(self) {
+
+		BluetoothHCIPowerState powerState = kBluetoothHCIPowerStateUnintialized;
+#if WIIUSE_MAC_OS_X_VERSION_10_7_OR_ABOVE
+		if([IOBluetoothHostController defaultController])
+			powerState = [IOBluetoothHostController defaultController].powerState;
+#else
+		// yes it is deprecated. no, there is no alternative (on 10.6).
+		IOBluetoothLocalDeviceGetPowerState(&powerState);
+#endif
 		if (![IOBluetoothHostController defaultController] ||
-			[IOBluetoothHostController defaultController].powerState == kBluetoothHCIPowerStateOFF)
+			powerState != kBluetoothHCIPowerStateON)
 		{
 			WIIUSE_DEBUG("Bluetooth hardware not available.");
 			[self release];