public Int32 LoadChunkData(byte[] data, Int32 p)
{
int P = p;
DataSize = Midi.readMSB32(data, P); P += 4;
Console.WriteLine("HeaderSize : " + DataSize);
MidiType = Midi.readMSB16(data, P); P += 2;
Tracks = Midi.readMSB16(data, P); P += 2;
Division = Midi.readMSB16(data, P); P += 2;
Console.WriteLine("Midi Format : " + this.MidiType);
Console.WriteLine("Traks : " + this.Tracks);
if ((Division & 0x8000) == 0)
{
Console.WriteLine("Division : " + this.Division);
}
else
{
Smpte_fps = (Int16)(Division >> 8);
Smpte_tpf = (Int16)(Division & 0x00ff);
Console.WriteLine("SMPTE FPS : " + this.Smpte_fps);
Console.WriteLine("SMPTE TPF : " + this.Smpte_tpf);
}
return(DataSize + 4);
}
public Int32 LoadChunkData(byte[] data, Int32 p)
{
Int32 P = p;
DataSize = Midi.readMSB32(data, P); P += 4;
Console.WriteLine("TrackSize : " + DataSize);
byte MidiStatus = 0;
while ((P - p) < DataSize + 4)
{
int DataStart = P;
/* delta time */
Int32 val = 0;
Int32[] vlq = Midi.readVLQ(data, P);
P += vlq[0];
val = vlq[1];
String dt = val.ToString();
DeltaTime.Add(dt);
//DeltaTime.
// Console.Write("DeltaTime : ");
// Console.WriteLine(value);
/* events */
byte CurByte = Midi.readMSB8(data, P);
//midi status changed
if (CurByte >= 0x80)
{
MidiStatus = CurByte;
P++;
}
//8x 1000xxxx nn vv 音符关闭 (释放键盘) nn=音符号 vv=速度
if (MidiStatus >= 0x80 && MidiStatus <= 0x8f)
{
Event.Add("Note Off");
Discription.Add(
"Channel=" + (MidiStatus & 0x0f) + "," +
"Note=" + Midi.readMSB8(data, P++) + "," +
"Velocity=" + Midi.readMSB8(data, P++)
);
//P+=2;
}
//9x 1001xxxx nn vv 音符打开 (按下键盘) nn=音符号 vv=速度
if (MidiStatus >= 0x90 && MidiStatus <= 0x9f)
{
Event.Add("Note On");
Discription.Add(
"Channel=" + (MidiStatus & 0x0f) + "," +
"Note=" + Midi.readMSB8(data, P++) + "," +
"Velocity=" + Midi.readMSB8(data, P++)
);
//P+=2;
}
//Ax 1010xxxx nn vv 触摸键盘以后 nn=音符号 vv=速度
if (MidiStatus >= 0xa0 && MidiStatus <= 0xaf)
{
Event.Add("Polyphone Key Pressure(Aftertouch)");
Discription.Add(
"Channel=" + (MidiStatus & 0x0f) + "," +
"Note=" + Midi.readMSB8(data, P++) + "," +
"Velocity=" + Midi.readMSB8(data, P++)
);
//P+=2;
}
//Bx 1011xxxx cc vv 调换控制 cc=控制号 vv=新值
if (MidiStatus >= 0xb0 && MidiStatus <= 0xbf)
{
Event.Add("Control Change");
Discription.Add(
"Channel=" + (MidiStatus & 0x0f) + "," +
"Controller Number=" + Midi.readMSB8(data, P++) + "," +
"New Value=" + Midi.readMSB8(data, P++)
);
//P+=2;
}
//Cx 1100xxxx pp 改变程序（片断） pp=新的程序号
if (MidiStatus >= 0xc0 && MidiStatus <= 0xcf)
{
Event.Add("Program Change");
Discription.Add(
"Channel=" + (MidiStatus & 0x0f) + "," +
"New Program Number=" + Midi.readMSB8(data, P++)
);
//P+=1;
}
//Dx 1101xxxx cc 在通道后接触 cc=管道号
if (MidiStatus >= 0xd0 && MidiStatus <= 0xdf)
{
Event.Add("Channel Pressure(Aftertouch)");
Discription.Add(
"Channel=" + (MidiStatus & 0x0f) + "," +
"cc=" + Midi.readMSB8(data, P++)
);
P += 1;
}
//Ex 1110xxxx bb tt 改变互相咬和的齿轮 (2000H 表明缺省或没有改变)(颤音轮)
// bb=值的低7位(least sig)
// tt=值的高7位 (most sig)
if (MidiStatus >= 0xe0 && MidiStatus <= 0xef)
{
Event.Add("Pitch Wheel Change");
Discription.Add(
"Channel=" + (MidiStatus & 0x0f) + "," +
"Bottom=" + Midi.readMSB8(data, P++) + "," +
"Top=" + Midi.readMSB8(data, P++)
);
//P+=2;
}
//f0 SYSEX events
if (MidiStatus == 0xf0)
{
int len = 0;
vlq = Midi.readVLQ(data, P);
P += vlq[0];
Event.Add("SYSEX : (0xf0)");
Discription.Add("...");
len = vlq[1];
P += len;
}
//F1 MIDI时间代码转换信息
if (MidiStatus == 0xf1)
{
Event.Add("SYSEX : MIDI Time Code");
Discription.Add("");
}
//F2 乐曲位置指针信息
if (MidiStatus == 0xf2)
{
Event.Add("SYSEX : Song Position Pointer");
Discription.Add("...");
P += 2;
}
//F3 乐曲选择信息
if (MidiStatus == 0xf3)
{
Event.Add("SYSEX : Song Select");
Discription.Add("Song=" + Midi.readMSB8(data, P++));
}
//F4 (未定义)
if (MidiStatus == 0xf4)
{
Event.Add("(Undefined) (0xf4)");
Discription.Add("...");
}
//F5 (未定义)
if (MidiStatus == 0xf5)
{
Event.Add("(Undefined) (0xf5)");
Discription.Add("...");
}
//F6 音调调整要求信息
if (MidiStatus == 0xf6)
{
Event.Add("SYSEX : Tune Request");
Discription.Add("");
}
//F7 结束系统专用信息
if (MidiStatus == 0xf7)
{
Event.Add("SYSEX : End of Exclusive");
Discription.Add("");
}
//F8 同步所必须的计时器
if (MidiStatus == 0xf8)
{
Event.Add("SYSEX : Synchronise Timer");
Discription.Add("");
}
//F9 (未定义)
if (MidiStatus == 0xf9)
{
Event.Add("(Undefined) (0xf9)");
Discription.Add("...");
}
//FA 开始当前的队列
if (MidiStatus == 0xfa)
{
Event.Add("SYSEX : Start");
Discription.Add("");
}
//FB 从停止的地方继续一个队列
if (MidiStatus == 0xfb)
{
Event.Add("SYSEX : Continue");
Discription.Add("");
}
//FC 停止一个队列
if (MidiStatus == 0xfc)
{
Event.Add("SYSEX : Stop");
Discription.Add("");
}
//FD (未定义)
if (MidiStatus == 0xfd)
{
Event.Add("(Undefined) (0xfd)");
Discription.Add("...");
}
//FE 联系激活信息
if (MidiStatus == 0xfe)
{
Event.Add("SYSEX : Active Sending");
Discription.Add("");
}
//FF 复位信息
//if(MidiStatus==0xff){}
//ff Meta-Events
if (MidiStatus == 0xff)
{
byte MetaType = Midi.readMSB8(data, P++);
byte[] MetaData;
int len = 0;
vlq = Midi.readVLQ(data, P);
P += vlq[0];
len = vlq[1];
MetaData = new byte[len];
System.Array.Copy(data, P, MetaData, 0, len);
P += len;
//int mp = 0;
String text = "";
switch (MetaType)
{
//00 nn ssss 设定轨道的序号 nn=02 (两字节长度的序号) ssss=序号
case 0x00:
Event.Add("Meta : Set Track Number");
Discription.Add("");
break;
//01 nn tt .. 你需要的所有文本事件 nn=以字节为单位的文本长度 tt=文本字符
case 0x01:
Event.Add("Meta : Text");
for (int i = 0; i < MetaData.Length; i++)
{
text += ((char)MetaData[i]).ToString();
}
Discription.Add(text);
break;
//02 nn tt .. 同文本的事件, 但是用于版权信息 nn tt=同文本事件
case 0x02:
Event.Add("Meta : Copyright");
for (int i = 0; i < MetaData.Length; i++)
{
text += ((char)MetaData[i]).ToString();
}
Discription.Add(text);
break;
//03 nn tt .. 序列或者轨道名 nn tt=同文本事件
case 0x03:
Event.Add("Meta : Track Name");
for (int i = 0; i < MetaData.Length; i++)
{
text += ((char)MetaData[i]).ToString();
}
Discription.Add(text);
break;
//04 nn tt .. 轨道乐器名 nn tt=同文本事件
case 0x04:
Event.Add("Meta : Instrument Name");
for (int i = 0; i < MetaData.Length; i++)
{
text += ((char)MetaData[i]).ToString();
}
Discription.Add(text);
break;
//05 nn tt .. 歌词 nn tt=同文本事件
case 0x05:
Event.Add("Meta : Lyric");
for (int i = 0; i < MetaData.Length; i++)
{
text += ((char)MetaData[i]).ToString();
}
Discription.Add(text);
break;
//06 nn tt .. 标签 nn tt=同文本事件
case 0x06:
Event.Add("Meta : Label");
for (int i = 0; i < MetaData.Length; i++)
{
text += ((char)MetaData[i]).ToString();
}
Discription.Add(text);
break;
//07 nn tt .. 浮点音符 nn tt=同文本事件
case 0x07:
Event.Add("Meta : Float Note");
for (int i = 0; i < MetaData.Length; i++)
{
text += ((char)MetaData[i]).ToString();
}
Discription.Add(text);
break;
//20 01 cc MIDI Channel 前缀
case 0x20:
Event.Add("Meta : MIDI Channel Prefixal");
Discription.Add(MetaData[0].ToString());
break;
//2F 00 这个事件一定在每个轨道的结尾出现
case 0x2f:
Event.Add("Meta : Track End");
Discription.Add("");
break;
//51 03 tttttt 设定拍子 tttttt=微秒/四分音符
case 0x51:
Event.Add("Meta : Set Tempo");
int tempo = Midi.readMSB24(MetaData, 0);
Discription.Add("Microseconds/Quarter Note=" + tempo + "");
break;
//54 05 hh mm ss fr ff SMTPE 偏移量
case 0x54:
Event.Add("Meta : SMTPE Offset");
Discription.Add(
"HH=" + MetaData[0] + "," +
"MM=" + MetaData[1] + "," +
"SS=" + MetaData[2] + "," +
"FR=" + MetaData[3] + "," +
"FF=" + MetaData[4]
);
break;
//58 04 nn dd cc bb 拍子记号 nn=拍子记号分子 dd=拍子记号分母2=四分之一 3=8分拍, 等等. cc=节拍器的节奏 bb=对四分之一音符标注的第32号数字
case 0x58:
Event.Add("Meta : Time Signature");
Discription.Add(
"Numerator=" + MetaData[0] + "," +
"Denominator=" + MetaData[1] + "," +
"Number of Ticks in Metronome Click=" + MetaData[2] + "," +
"Number of 32nd Notes to the Quarternote=" + MetaData[3]
);
break;
//59 02 sf mi 音调符号 sf=升调/降调(-7=7 降调, 0=基准C调,7=7 升调) mi=大调/小调(0=大调, 1=小调)
case 0x59:
Event.Add("Meta : Key Signature");
Discription.Add(
"Sharps or Flats=" + MetaData[0] + "," +
"Major or Minor=" + MetaData[1]
);
break;
//7F xx dd .. 音序器的详细信息 xx=被发送的字节数 dd=数据
case 0x7f:
Event.Add("Meta : Synthesizer Info");
for (int i = 0; i < MetaData.Length; i++)
{
text += ((char)MetaData[i]).ToString();
}
Discription.Add(text);
break;
default:
Event.Add("Meta : " + MetaType.ToString("X2"));
Discription.Add("");
break;
}
}
String st = "";
for (int i = 0; i < P - DataStart; i++)
{
st += (data[DataStart + i]).ToString("X2");
st += " ";
}
HexData.Add(st);
byte[] ddata = new byte[P - DataStart];
Array.Copy(data, DataStart, ddata, 0, P - DataStart);
dData.Add(ddata);
}
//P += DataSize;
return(DataSize + 4);
}
