Initial

midiwrt/MIDITRCK.HPP

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+#ifndef _MIDITRACK_HPP_
+#define _MIDITRACK_HPP_
+#include <stdio.h>
+#include <common/windows.hpp>
+#include <common/memfile.hpp>
+#include <midiwrt/midihdr.hpp>
+
+class MidiTrack
+{
+public:
+	enum EventType{MetaEvent=0xFF,SystemExclusiveOne=0xF0,SystemExclusiveTwo=0xF7,NullEvent=0x00};
+	enum MidiChannelMsg{MIDIProgramChange=0xC0,MIDINoteOff=0x80,MIDINoteOn=0x90,
+			 MIDIKeyPressure=0xA0,MIDIParameter=0xB0,MIDIPitchBend=0xE0,MIDIProgram=0xC0,
+			 MIDIChannelPressure=0xD0};
+	enum MetaEventType{SequenceNumberEvent=0x00,TextEvent=0x01,CopyrightNotice=0x02,
+			 SequenceTrackName=0x03,InstrumentName=0x04,Lyric=0x05,Marker=0x06,CuePoint=0x07,
+			 EndOfTrack=0x2F,SetTempo=0x51,SMPTEFormatSpec=0x54,TimeSignature=0x58,
+			 KeySignature=0x59,SequencerSpecificMetaEvent=0x7F};
+	MidiTrack(MemFile &midiFile);
+	~MidiTrack();
+	WORD writeHeader(void);
+	WORD readHeader(void);
+  WORD rewind(void);
+	void setDeltaTime(DWORD eventTime);
+	WORD writeMetaEvent(MetaEventType metaEventType,void *lpData,BYTE lengthData);
+	WORD writeMidiChannelMessage(MidiChannelMsg midiChannelMessage,BYTE channel,void *lpData,BYTE lengthData);
+  WORD writeEndTrack(void);
+	DWORD length(void)const;
+	void setLocation(MemFile &midiFile);
+private:
+	enum {TrackIDLen=4};
+	void length(DWORD lengthData);
+  WORD flushTrack(void);
+  WORD writeTimeValue(DWORD longValue);
+
+	char mTrack[TrackIDLen];
+	DWORD mLengthData;
+	DWORD mDeltaTime;
+	DWORD mHeaderPosition;
+	DWORD mByteCount;
+  MemFile &mMidiFile;
+};
+
+inline
+MidiTrack::MidiTrack(MemFile &midiFile)
+: mLengthData(0),	mDeltaTime(0), mHeaderPosition(0L), mMidiFile(midiFile), mByteCount(0)
+{
+	::memcpy(mTrack,"MTrk",sizeof(mTrack));
+}
+
+inline
+MidiTrack::~MidiTrack()
+{
+}
+
+inline
+void MidiTrack::setDeltaTime(DWORD eventTime)
+{
+  mDeltaTime=eventTime;
+}
+
+inline
+DWORD MidiTrack::length(void)const
+{
+	return mLengthData;
+}
+
+inline
+void MidiTrack::length(DWORD lengthData)
+{
+	mLengthData=lengthData;
+}
+
+inline
+WORD MidiTrack::rewind(void)
+{
+	if(!mMidiFile.seek(mHeaderPosition,MemFile::SeekBeginning))return FALSE;
+  return TRUE;
+}
+
+inline
+void MidiTrack::setLocation(MemFile &midiFile)
+{
+	mLengthData=mDeltaTime=mByteCount=0;
+  mHeaderPosition=midiFile.tell();
+}
+#endif