mirror of
https://github.com/microtherion/VocalEasel.git
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75 lines
1.6 KiB
C++
75 lines
1.6 KiB
C++
//
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// File: VLMIDIWriter.cpp
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//
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// Author(s):
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//
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// (MN) Matthias Neeracher
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//
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// Copyright © 2008 Matthias Neeracher
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//
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#include "VLMIDIWriter.h"
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#include <AudioToolbox/AudioToolbox.h>
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struct VLMetaEvent : MIDIMetaEvent {
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char fPadding[32];
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VLMetaEvent(const char * label)
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{
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metaEventType = 3;
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dataLength = strlen(label);
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memcpy(data, label, dataLength);
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}
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};
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void VLMIDIWriter::Visit(VLSong & song)
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{
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fChordTime = 0.0f;
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fVolta.clear();
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MusicSequenceNewTrack(fMusic, &fTrack);
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VLMetaEvent meta("VocalEasel");
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MusicTrackNewMetaEvent(fTrack, 0.0, &meta);
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VisitMeasures(song, true);
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}
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void VLMIDIWriter::VisitMeasure(size_t m, VLProperties & p, VLMeasure & meas)
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{
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if (fVolta.size() <= m)
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fVolta.push_back(0);
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fTime = p.fTime;
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fMeasure = m;
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fStanza = ++fVolta[m];
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if (!fChordTime)
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fChordTime = fNoteTime = fCountIn*fTime.fNum;
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fAt = 0;
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VisitChords(meas);
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fAt = 0;
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VisitNotes(meas, p, false);
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}
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void VLMIDIWriter::VisitNote(VLLyricsNote & n)
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{
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if (!(n.fTied & VLNote::kTiedWithPrev)) {
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VLMIDIUserEvent event = {8, n.fPitch, fStanza, fMeasure, fAt};
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MusicTrackNewUserEvent(fTrack, fNoteTime,
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reinterpret_cast<const MusicEventUserData *>(&event));
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}
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fAt += n.fDuration;
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fNoteTime += n.fDuration * (float)fTime.fDenom;
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}
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void VLMIDIWriter::VisitChord(VLChord & c)
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{
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if (c.fPitch != VLNote::kNoPitch) {
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VLMIDIUserEvent event = {8, 0, fStanza, fMeasure, fAt};
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MusicTrackNewUserEvent(fTrack, fChordTime,
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reinterpret_cast<const MusicEventUserData *>(&event));
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}
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fAt += c.fDuration;
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fChordTime += c.fDuration * (float)fTime.fDenom;
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}
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