public static void playBasic(MidiDevice Device, string note, int trmbre, int channel)
{
Device.ChangeProgram(channel, trmbre, 0);
int lenth = note.Length;
int location;
int speed;
for (int i = 0; i < lenth - 2; i += 3)
{
location = 60;
location += 12 * (int)(note[i + 1] - 53);
switch (note[i])
{
case 'C':
case 'c': location += 0; break;
case '!': location += 1; break;
case 'D':
case 'd': location += 2; break;
case '#': location += 3; break;
case 'E':
case 'e': location += 4; break;
case 'F':
case 'f': location += 5; break;
case '%': location += 6; break;
case 'G':
case 'g': location += 7; break;
case '*': location += 8; break;
case 'A':
case 'a': location += 9; break;
case 'B':
case 'b': location += 11; break;
default: location = -1; break;
}
//speed = 2 * int2Pow(note[i + 2] - 44);
// speed = (int)(60000 / beat / 16 * (int)Math.Pow(2, (int)note[i + 2] - 48));
speed = (int)(beat * int2Pow(note[i + 2] - 48));
Device.Note_On(channel, location, 100);
Thread.Sleep(speed);
Device.Note_Off(channel, location, 100);
}
}
/// <summary>
/// 和弦播放单音的方法
/// </summary>
/// <param name="MIDI设备"></param>
/// <param name="乐谱"></param>
/// <param name="音色"></param>
/// <param name="MIDI频道"></param>
/// <param name="音量"></param>
public static void playBasic_left(MidiDevice Device, string note, int trmbre, int channel, int playvolume)
{
// 1. A3+31999 C4+41999 C4+41999 C4+41999 C3+51999 C5050999
// 2. 8位一个音，1音名；2八度；3升降＋－0；4音长；5附点1、0；6－8无意义的9占位；
if (note != null)
{
//处理轨道音色问题
Device.ChangeProgram(channel, trmbre, 0);
//定义变量
int lenth = note.Length;
int location;
double speed;
for (int i = 0; i < lenth - 5; i += 8)
{
//处理几个八度问题 第二位
location = 60;
location += 12 * (int)(note[i + 1] - 53);
//处理八度以内问题 第一位
switch (note[i])
{
case 'C':
case 'c': location += 0; break;
case 'D':
case 'd': location += 2; break;
case 'E':
case 'e': location += 4; break;
case 'F':
case 'f': location += 5; break;
case 'G':
case 'g': location += 7; break;
case 'A':
case 'a': location += 9; break;
case 'B':
case 'b': location += 11; break;
default: location = -1; break;
}
//处理升降问题 + - 0 第三位
switch (note[i + 2])
{
case '+': location += 1; break;
case '-': location -= 1; break;
default: break;
}
//处理音符越界问题 第一二三位合起来
if (location != -1)
{
location += key_move;
}
if (location < -1)
{
location = -1;
}
//处理音符时长问题 第四位
speed = (60000 / beat / 16 * (int)Math.Pow(2, (int)note[i + 3] - 48));
//处理附点问题 第五位
if (note[i + 4] == '1')
{
speed *= 1.5;
}
Console.WriteLine("和弦轨播放："
+ note[i] + note[i + 1] + note[i + 2] + note[i + 3]
+ note[i + 4] + note[i + 5] + note[i + 6] + note[i + 7]
+ "=" + location + "\t播放时间=" + speed);
Application.Current.Dispatcher.Invoke(new Action(() =>
{
MainWindow.InterfaceForMidi.keyDownColor_left(location);
}), null);
Device.Note_On(channel, location, (int)((double)volume / 100 * playvolume));
Thread.Sleep((int)speed);
Application.Current.Dispatcher.Invoke(new Action(() =>
{
MainWindow.InterfaceForMidi.keyUpColor(location);
}), null);
Device.Note_Off(channel, location, (int)((double)volume / 100 * playvolume));
}
}
}
