1 /*
2 File: SynthNote.cpp
3 Abstract: SynthNote.h
4 Version: 1.1
5
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44 Copyright (C) 2014 Apple Inc. All Rights Reserved.
45
46 */
47 #include "SynthNote.h"
48 #include "SynthElement.h"
49 #include "AUInstrumentBase.h"
50
AttackNote(SynthPartElement * inPart,SynthGroupElement * inGroup,NoteInstanceID inNoteID,UInt64 inAbsoluteSampleFrame,UInt32 inOffsetSampleFrame,const MusicDeviceNoteParams & inParams)51 bool SynthNote::AttackNote(
52 SynthPartElement * inPart,
53 SynthGroupElement * inGroup,
54 NoteInstanceID inNoteID,
55 UInt64 inAbsoluteSampleFrame,
56 UInt32 inOffsetSampleFrame,
57 const MusicDeviceNoteParams &inParams)
58 {
59 #if DEBUG_PRINT
60 printf("SynthNote::AttackNote %lu %lu abs frame %llu rel frame %lu\n", (UInt32)inGroup->GroupID(), (UInt32)inNoteID, inAbsoluteSampleFrame, inOffsetSampleFrame);
61 #endif
62 mPart = inPart;
63 mGroup = inGroup;
64 mNoteID = inNoteID;
65
66 mAbsoluteStartFrame = inAbsoluteSampleFrame;
67 mRelativeStartFrame = inOffsetSampleFrame;
68 mRelativeReleaseFrame = -1;
69 mRelativeKillFrame = -1;
70
71 mPitch = inParams.mPitch;
72 mVelocity = inParams.mVelocity;
73
74
75 return Attack(inParams);
76 }
77
78
Reset()79 void SynthNote::Reset()
80 {
81 mPart = 0;
82 mGroup = 0;
83 mAbsoluteStartFrame = 0;
84 mRelativeStartFrame = 0;
85 mRelativeReleaseFrame = 0;
86 mRelativeKillFrame = 0;
87 }
88
Kill(UInt32 inFrame)89 void SynthNote::Kill(UInt32 inFrame)
90 {
91 mRelativeKillFrame = inFrame;
92 }
93
Release(UInt32 inFrame)94 void SynthNote::Release(UInt32 inFrame)
95 {
96 mRelativeReleaseFrame = inFrame;
97 }
98
FastRelease(UInt32 inFrame)99 void SynthNote::FastRelease(UInt32 inFrame)
100 {
101 mRelativeReleaseFrame = inFrame;
102 }
103
TuningA() const104 double SynthNote::TuningA() const
105 {
106 return 440.0;
107 }
108
Frequency()109 double SynthNote::Frequency()
110 {
111 return TuningA() * pow(2., (mPitch - 69. + GetPitchBend()) / 12.);
112 }
113
SampleRate()114 double SynthNote::SampleRate()
115 {
116 return GetAudioUnit()->GetOutput(0)->GetStreamFormat().mSampleRate;
117 }
118
GetAudioUnit() const119 AUInstrumentBase* SynthNote::GetAudioUnit() const
120 {
121 return (AUInstrumentBase*)mGroup->GetAudioUnit();
122 }
123
GetGlobalParameter(AudioUnitParameterID inParamID) const124 Float32 SynthNote::GetGlobalParameter(AudioUnitParameterID inParamID) const
125 {
126 return mGroup->GetAudioUnit()->Globals()->GetParameter(inParamID);
127 }
128
NoteEnded(UInt32 inFrame)129 void SynthNote::NoteEnded(UInt32 inFrame)
130 {
131 mGroup->NoteEnded(this, inFrame);
132 mNoteID = 0xFFFFFFFF;
133 }
134
GetPitchBend() const135 float SynthNote::GetPitchBend() const
136 {
137 return mGroup->GetPitchBend();
138 }
139
140
141