#include <midiseq/mididata.hpp>

MidiData::MidiData(const String &midiPathFileName)
: mTimerCallback(this,&MidiData::timerEvent),
	mMidiFile(midiPathFileName,FileIO::BigEndian), MidiTrack(mMidiFile)
{
  insertHandler(&mTimerCallback);
	if(!readHeader(mMidiFile))return;
	::OutputDebugString(String("[MidiData::MidiData]MIDI header=")+String(MidiHeader::toString()+String("\n")).str());
	setMethod(timingMethod());
}

MidiData::~MidiData()
{
	stopTimer();
  mMIDIOutDevice.closeDevice();
  mMIDIEventVector.size(0);
}

bool MidiData::play(WORD blocking)
{
	mPlayIndex=0;
	if(!makeRealTime())return false;
	startTimer(TimerDelay);
	if(blocking)waitEvent();
  return true;
}

bool MidiData::makeRealTime(void)
{
	TimeBlock timeBlock;

  mTempoChange.remove();
	if(!tracks())return false;
	while(readTrack());
  if(!mTempoChange.size())return false;
  timeBlock.setTempo(mTempoChange[0].microsecsPerQtrNote());
	timeBlock.setDivision(method());
	timeBlock.setStartTime(getSystemTime()+TwoSecs);
	timeBlock.fixTimeBlock(mMIDIEvents,mMIDIEventVector);
  return true;
}

CallbackData::ReturnType MidiData::timerEvent(CallbackData &/*someCallbackData*/)
{
	DWORD currTime(getSystemTime());

	if(!mMIDIOutDevice.hasDevice()||!mMIDIEventVector.size())return closeDevice();
	while(mMIDIEventVector[mPlayIndex].playTime()<=currTime)
	{
		if(!mMIDIOutDevice.midiEvent(mMIDIEventVector[mPlayIndex]))return closeDevice();
		if(++mPlayIndex>=mMIDIEventVector.size())return closeDevice();
	}
  return (CallbackData::ReturnType)TRUE;
}

CallbackData::ReturnType MidiData::closeDevice(void)
{
  mMIDIOutDevice.closeDevice();
  return (CallbackData::ReturnType)FALSE;
}

// virtual overloads  

void MidiData::midiChannelMessage(PureEvent &midiEvent)
{
	mMIDIEvents[midiEvent.channel()].insert(&midiEvent);
	return;
}

void MidiData::setTempo(DWORD microsecsPerQtrNote)
{
  mTempoChange.insert(&TempoChange(microsecsPerQtrNote,0L));
	return;
}

void MidiData::smpteFormat(const SMPTEFormat &someSMPTEFormat)
{
	mSMPTEFormat=someSMPTEFormat;
	return;  
}

void MidiData::timeSignature(const TimeInfo &/*someTimeInfo*/)
{
	return;
}