deprecatedなコードを含むAudioUnit取得処理を一新する

更新前:

ComponentDescription desc;

desc.componentType = kAudioUnitType_Effect;

desc.componentSubType = kAudioUnitSubType_MatrixReverb;

desc.componentManufacturer = kAudioUnitManufacturer_Apple;

desc.componentFlagsMask = 0;

desc.componentFlags = 0;

Component comp = NULL;

comp = FindNextComponent(comp,&desc);

AudioUnit unit;

OSStatus err = OpenAComponent(comp, &unit);

NSAssert(err == noErr, @"");

err = AudioUnitInitialize(unit);

NSAssert(err == noErr, @"");

更新後:

AudioComponentDescription desc;

desc.componentType = kAudioUnitType_Effect;

desc.componentSubType = kAudioUnitSubType_MatrixReverb;

desc.componentManufacturer = kAudioUnitManufacturer_Apple;

desc.componentFlagsMask = 0;

desc.componentFlags = 0;

AudioComponent comp = NULL;

comp = AudioComponentFindNext(comp,&desc);

AudioUnit unit;

OSStatus err = AudioComponentInstanceNew(comp, &unit);

NSAssert(err == noErr, @"");

err = AudioUnitInitialize(unit);

NSAssert(err == noErr, @"");

ComponentDescription -> AudioComponentDescription
Component -> AudioComponent
FindNextComponent() -> AudioComponentFindNext()
OpenAComponent()-> AudioComponentInstanceNew()
ComponentResult -> OSStatus
CloseComponent() -> AudioComponentInstanceDispose()