Merge pull request #157 from fingolfin/coreaudio

MACOSX: Use modern CoreAudio API on modern systems by default, cleanup

backends/midi/coreaudio.cpp

@@ -27,22 +27,36 @@
 #ifdef MACOSX
 
 
-// HACK to disable deprecated warnings under Mac OS X 10.5. Apple deprecated the
+// With the release of Mac OS X 10.5 in October 2007, Apple deprecated the
 // AUGraphNewNode & AUGraphGetNodeInfo APIs in favor of the new AUGraphAddNode &
 // AUGraphNodeInfo APIs. While it is easy to switch to those, it breaks
 // compatibility with all pre-10.5 systems.
-// If you want to retain compatibility with old systems, enable the following
-// switch. But Apple will eventually remove these APIs, at which point the
-// switch needs to be disabled.
 //
-// Also note that only the new API is available on the iPhone!
-#define USE_DEPRECATED_COREAUDIO_API
-
+// Since 10.5 was the last system to support PowerPC, we use the old, deprecated
+// APIs on PowerPC based systems by default. On all other systems (such as Mac
+// OS X running on Intel hardware, or iOS running on ARM), we use the new API by
+// default.
+//
+// This leaves Mac OS X 10.4 running on x86 processors as the only system
+// combination that this code will not support by default. It seems quite
+// reasonable to assume that anybody with an Intel system has since then moved
+// on to a newer Mac OS X release. But if for some reason you absolutely need to
+// build an x86 version of this code using the old, deprecated API, you can
+// simply do so by manually enable the USE_DEPRECATED_COREAUDIO_API switch (e.g.
+// by adding setting it suitably in CPPFLAGS).
+#if !defined(USE_DEPRECATED_COREAUDIO_API)
+	#if TARGET_CPU_PPC || TARGET_CPU_PPC64
+		#define USE_DEPRECATED_COREAUDIO_API 1
+	#else
+		#define USE_DEPRECATED_COREAUDIO_API 0
+	#endif
+#endif
 
-#ifdef USE_DEPRECATED_COREAUDIO_API
-#include <AvailabilityMacros.h>
-#undef DEPRECATED_ATTRIBUTE
-#define DEPRECATED_ATTRIBUTE
+#if USE_DEPRECATED_COREAUDIO_API
+	#include <AvailabilityMacros.h>
+	// Try to silence warnings about use of deprecated APIs
+	#undef DEPRECATED_ATTRIBUTE
+	#define DEPRECATED_ATTRIBUTE
 #endif
 
 
@@ -114,7 +128,7 @@ int MidiDriver_CORE::open() {
 	RequireNoErr(NewAUGraph(&_auGraph));
 
 	AUNode outputNode, synthNode;
-#ifdef USE_DEPRECATED_COREAUDIO_API
+#if USE_DEPRECATED_COREAUDIO_API
 	ComponentDescription desc;
 #else
 	AudioComponentDescription desc;
@@ -126,7 +140,7 @@ int MidiDriver_CORE::open() {
 	desc.componentManufacturer = kAudioUnitManufacturer_Apple;
 	desc.componentFlags = 0;
 	desc.componentFlagsMask = 0;
-#ifdef USE_DEPRECATED_COREAUDIO_API
+#if USE_DEPRECATED_COREAUDIO_API
 	RequireNoErr(AUGraphNewNode(_auGraph, &desc, 0, NULL, &outputNode));
 #else
 	RequireNoErr(AUGraphAddNode(_auGraph, &desc, &outputNode));
@@ -136,7 +150,7 @@ int MidiDriver_CORE::open() {
 	desc.componentType = kAudioUnitType_MusicDevice;
 	desc.componentSubType = kAudioUnitSubType_DLSSynth;
 	desc.componentManufacturer = kAudioUnitManufacturer_Apple;
-#ifdef USE_DEPRECATED_COREAUDIO_API
+#if USE_DEPRECATED_COREAUDIO_API
 	RequireNoErr(AUGraphNewNode(_auGraph, &desc, 0, NULL, &synthNode));
 #else
 	RequireNoErr(AUGraphAddNode(_auGraph, &desc, &synthNode));
@@ -150,7 +164,7 @@ int MidiDriver_CORE::open() {
 	RequireNoErr(AUGraphInitialize(_auGraph));
 
 	// Get the music device from the graph.
-#ifdef USE_DEPRECATED_COREAUDIO_API
+#if USE_DEPRECATED_COREAUDIO_API
 	RequireNoErr(AUGraphGetNodeInfo(_auGraph, synthNode, NULL, NULL, NULL, &_synth));
 #else
 	RequireNoErr(AUGraphNodeInfo(_auGraph, synthNode, NULL, &_synth));

gui/browser_osx.mm

@@ -62,11 +62,7 @@
 	NSOpenPanel * panel = [NSOpenPanel openPanel];
 	[panel setCanChooseDirectories:YES];
 	if ([panel runModalForTypes:nil] == NSOKButton) {
-#ifdef __POWERPC__
-		const char *filename = [[panel filename] cString];
-#else
-		const char *filename = [[panel filename] cStringUsingEncoding:NSUTF8StringEncoding];
-#endif
+		const char *filename = [[panel filename] UTF8String];
 		_choice = Common::FSNode(filename);
 		choiceMade = true;
 	}