public Form1()
{
InitializeComponent();
Part part1 = new Part();
Part part2 = new Part();
Part part3 = new Part();
Part part4 = new Part();
part1.Script = "@k 1-g 2-g 3-g 4-g 5-g 6-g 7-g 1g 2g 3G 4G 5G 6G 7G 1+G 2+g 3+g 4+g 5+g 6+g 7+g 1++g";
part2.Script = "1-g 2-g 3-g 4-g 5-g 6-g 7-g 1g 2g 3G 4G 5G 6G 7G 1+G 2+g 3+g 4+g 5+g 6+g 7+g 1++g";
part3.Script = "@0v 1-g 2-g 3-g 4-g 5-g 6-g 7-g 1g 2g 3G 4G 5G 6G 7G 1+G 2+g 3+g 4+g 5+g 6+g 7+g 1++g";
part4.Script = "@1+k 1+ 2+ 3+ 4+ 5+ 6+ 7+ A4";
Tune tune = new Tune();
//tune.Parts[0] = part1;
tune.Parts[0] = part4;
//tune.Parts[1] = part2;
//tune.Parts[2] = part3;
Compiler.CompileTune(tune, 1.0);
}
public static MemoryStream CompileTune(Tune tune, double masterVolume)
{
int duration = 0; // equal to the longest part
List <List <Beep> > parts = new List <List <Beep> >();
for (int i = 0; i < tune.Parts.Count; i++)
{
Part rawPart = tune.Parts[i];
if (rawPart.IsMuted || rawPart.Volume == 0)
{
continue;
}
parts.Add(CompileScript(rawPart.Script, tune.Key, masterVolume * rawPart.Volume, tune.Bpm, out int temp));
if (temp > duration)
{
duration = temp;
}
}
MemoryStream stream = new MemoryStream();
using (BinaryWriter writer = new BinaryWriter(stream))
{
// awesome code by Shawn Kovac
// https://stackoverflow.com/questions/12611982/generate-audio-tone-to-sound-card-in-c-or-c-sharp
// thank you Shawn
const int formatChunkSize = 16, headerSize = 8, waveSize = 4;
const short formatType = 1, tracks = 1, bitsPerSample = 16, frameSize = tracks * ((bitsPerSample + 7) / 8);
int bytesPerSecond = Note.SampleRate * frameSize;
int dataChunkSize = duration * frameSize;
int fileSize = waveSize + headerSize + formatChunkSize + headerSize + dataChunkSize;
writer.Write(0x46464952);
writer.Write(fileSize);
writer.Write(0x45564157);
writer.Write(0x20746D66);
writer.Write(formatChunkSize);
writer.Write(formatType);
writer.Write(tracks);
writer.Write(Note.SampleRate);
writer.Write(bytesPerSecond);
writer.Write(frameSize);
writer.Write(bitsPerSample);
writer.Write(0x61746164);
writer.Write(dataChunkSize);
short[] buffer = new short[duration];
foreach (List <Beep> part in parts)
{
int i = 0;
foreach (Beep beep in part)
{
double theta = beep.Freq * 2 * Math.PI / Note.SampleRate;
double amplitude = beep.Volume * 32_767;
for (int step = 0; step < beep.Duration; step++, i++)
{
buffer[i] += (short)(amplitude * Math.Sin(theta * step));
}
Console.WriteLine($"{beep.Freq}, {beep.Duration}");
}
}
foreach (short sample in buffer)
{
writer.Write(sample);
}
// TODO: move these
stream.Seek(0, SeekOrigin.Begin);
new System.Media.SoundPlayer(stream).PlaySync();
}
return(stream);
}