87 lines
2.0 KiB
C++
87 lines
2.0 KiB
C++
#include <midiseq/mididata.hpp>
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MidiData::MidiData(const String &midiPathFileName)
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: mTimerCallback(this,&MidiData::timerEvent),
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mMidiFile(midiPathFileName,FileIO::BigEndian), MidiTrack(mMidiFile)
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{
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insertHandler(&mTimerCallback);
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if(!readHeader(mMidiFile))return;
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::OutputDebugString(String(MidiHeader::toString()+String("\n")).str());
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setMethod(timingMethod());
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}
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MidiData::~MidiData()
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{
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stopTimer();
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mMIDIOutDevice.closeDevice();
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mMIDIEventVector.size(0);
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}
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WORD MidiData::play(WORD blocking)
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{
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mPlayIndex=0;
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mTempoChange.remove();
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if(!tracks())return FALSE;
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while(readTrack());
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if(!makeRealTime())return FALSE;
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startTimer(TimerDelay);
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if(blocking)waitEvent();
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return TRUE;
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}
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WORD MidiData::makeRealTime(void)
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{
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TimeBlock timeBlock;
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if(!mTempoChange.size())return FALSE;
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timeBlock.setTempo(mTempoChange[0].microsecsPerQtrNote());
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timeBlock.setDivision(method());
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timeBlock.setStartTime(getSystemTime()+TwoSecs);
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timeBlock.fixTimeBlock(mMIDIEvents,mMIDIEventVector);
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return TRUE;
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}
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CallbackData::ReturnType MidiData::timerEvent(CallbackData &/*someCallbackData*/)
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{
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DWORD currTime(getSystemTime());
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if(!mMIDIOutDevice.hasDevice()||!mMIDIEventVector.size())return closeDevice();
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while(mMIDIEventVector[mPlayIndex].playTime()<=currTime)
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{
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if(!mMIDIOutDevice.midiEvent(mMIDIEventVector[mPlayIndex]))return closeDevice();
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if(++mPlayIndex>=mMIDIEventVector.size())return closeDevice();
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}
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return (CallbackData::ReturnType)TRUE;
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}
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CallbackData::ReturnType MidiData::closeDevice(void)
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{
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mMIDIOutDevice.closeDevice();
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return (CallbackData::ReturnType)FALSE;
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}
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// virtual overloads
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void MidiData::midiChannelMessage(PureEvent &midiEvent)
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{
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mMIDIEvents[midiEvent.channel()].insert(&midiEvent);
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return;
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}
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void MidiData::setTempo(DWORD microsecsPerQtrNote)
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{
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mTempoChange.insert(&TempoChange(microsecsPerQtrNote,0L));
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return;
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}
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void MidiData::smpteFormat(const SMPTEFormat &someSMPTEFormat)
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{
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mSMPTEFormat=someSMPTEFormat;
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return;
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}
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void MidiData::timeSignature(const TimeInfo &/*someTimeInfo*/)
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{
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return;
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}
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