1 /*
2 File: AUMIDIEffectBase.cpp
3 Abstract: AUMIDIEffectBase.h
4 Version: 1.1
5
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44 Copyright (C) 2014 Apple Inc. All Rights Reserved.
45
46 */
47 #include "AUMIDIEffectBase.h"
48
49 // compatibility with older OS SDK releases
50 typedef OSStatus
51 (*TEMP_MusicDeviceMIDIEventProc)( void * inComponentStorage,
52 UInt32 inStatus,
53 UInt32 inData1,
54 UInt32 inData2,
55 UInt32 inOffsetSampleFrame);
56
57 static OSStatus AUMIDIEffectBaseMIDIEvent(void * inComponentStorage,
58 UInt32 inStatus,
59 UInt32 inData1,
60 UInt32 inData2,
61 UInt32 inOffsetSampleFrame);
62
AUMIDIEffectBase(AudioComponentInstance inInstance,bool inProcessesInPlace)63 AUMIDIEffectBase::AUMIDIEffectBase( AudioComponentInstance inInstance,
64 bool inProcessesInPlace )
65 : AUEffectBase(inInstance, inProcessesInPlace),
66 AUMIDIBase(this)
67 {
68 }
69
GetPropertyInfo(AudioUnitPropertyID inID,AudioUnitScope inScope,AudioUnitElement inElement,UInt32 & outDataSize,Boolean & outWritable)70 OSStatus AUMIDIEffectBase::GetPropertyInfo(AudioUnitPropertyID inID,
71 AudioUnitScope inScope,
72 AudioUnitElement inElement,
73 UInt32 & outDataSize,
74 Boolean & outWritable)
75 {
76 OSStatus result;
77
78 result = AUEffectBase::GetPropertyInfo (inID, inScope, inElement, outDataSize, outWritable);
79
80 if (result == kAudioUnitErr_InvalidProperty)
81 result = AUMIDIBase::DelegateGetPropertyInfo (inID, inScope, inElement, outDataSize, outWritable);
82
83 return result;
84 }
85
GetProperty(AudioUnitPropertyID inID,AudioUnitScope inScope,AudioUnitElement inElement,void * outData)86 OSStatus AUMIDIEffectBase::GetProperty( AudioUnitPropertyID inID,
87 AudioUnitScope inScope,
88 AudioUnitElement inElement,
89 void * outData)
90 {
91 OSStatus result;
92
93 #if !CA_USE_AUDIO_PLUGIN_ONLY
94 if (inID == kAudioUnitProperty_FastDispatch) {
95 if (inElement == kMusicDeviceMIDIEventSelect) {
96 *(TEMP_MusicDeviceMIDIEventProc *)outData = AUMIDIEffectBaseMIDIEvent;
97 return noErr;
98 }
99 return kAudioUnitErr_InvalidElement;
100 }
101 #endif
102
103 result = AUEffectBase::GetProperty (inID, inScope, inElement, outData);
104
105 if (result == kAudioUnitErr_InvalidProperty)
106 result = AUMIDIBase::DelegateGetProperty (inID, inScope, inElement, outData);
107
108 return result;
109 }
110
SetProperty(AudioUnitPropertyID inID,AudioUnitScope inScope,AudioUnitElement inElement,const void * inData,UInt32 inDataSize)111 OSStatus AUMIDIEffectBase::SetProperty( AudioUnitPropertyID inID,
112 AudioUnitScope inScope,
113 AudioUnitElement inElement,
114 const void * inData,
115 UInt32 inDataSize)
116 {
117
118 OSStatus result = AUEffectBase::SetProperty (inID, inScope, inElement, inData, inDataSize);
119
120 if (result == kAudioUnitErr_InvalidProperty)
121 result = AUMIDIBase::DelegateSetProperty (inID, inScope, inElement, inData, inDataSize);
122
123 return result;
124 }
125
126
127 #if !TARGET_OS_IPHONE
ComponentEntryDispatch(ComponentParameters * params,AUMIDIEffectBase * This)128 OSStatus AUMIDIEffectBase::ComponentEntryDispatch(ComponentParameters * params,
129 AUMIDIEffectBase * This)
130 {
131 if (This == NULL) return paramErr;
132
133 OSStatus result;
134
135 switch (params->what) {
136 case kMusicDeviceMIDIEventSelect:
137 case kMusicDeviceSysExSelect:
138 result = AUMIDIBase::ComponentEntryDispatch (params, This);
139 break;
140 default:
141 result = AUEffectBase::ComponentEntryDispatch(params, This);
142 break;
143 }
144
145 return result;
146 }
147 #endif
148
149 // fast dispatch
AUMIDIEffectBaseMIDIEvent(void * inComponentStorage,UInt32 inStatus,UInt32 inData1,UInt32 inData2,UInt32 inOffsetSampleFrame)150 static OSStatus AUMIDIEffectBaseMIDIEvent(void * inComponentStorage,
151 UInt32 inStatus,
152 UInt32 inData1,
153 UInt32 inData2,
154 UInt32 inOffsetSampleFrame)
155 {
156 OSStatus result = noErr;
157 try {
158 AUMIDIEffectBase *This = static_cast<AUMIDIEffectBase *>(inComponentStorage);
159 if (This == NULL) return paramErr;
160 result = This->AUMIDIBase::MIDIEvent(inStatus, inData1, inData2, inOffsetSampleFrame);
161 }
162 COMPONENT_CATCH
163 return result;
164 }
165