/// <summary>
/// Обработчик изменения текущей таблицы сэмплов.
/// </summary>
/// <param name="value">Нормированное новое значение параметра.</param>
private void SetWaveTable(float value)
{
var newWaveTable = Converters.ToWaveTable(value);
if (waveTable != newWaveTable)
{
waveTable = newWaveTable;
foreach (var oscillator in oscillators)
{
oscillator.SetWaveTable(waveTable.Clone());
}
}
}
/// <summary>
/// Метод, записывающий объект WaveTableOscillator в поток.
/// </summary>
/// <param name="stream"></param>
/// <param name="obj"></param>
public static void Serialize(Stream stream, WaveTableOscillator obj)
{
using (var writer = new BinaryWriter(stream, System.Text.Encoding.Default, true))
{
writer.Write(obj.waveTablesAmount);
foreach (var waveTable in obj.waveTables)
{
writer.Write(waveTable.Length);
writer.Write(waveTable.PhaseIncrement);
foreach (var sample in waveTable.Samples)
{
writer.Write(sample);
}
}
}
}
/// <summary>
/// Метод, обеспечивающий создание таблиц сэмплов.
/// </summary>
private static void GetOrGenerateWaveTables()
{
var directory = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments);
var path = directory + @"\waveTables.bin";
try
{
using (var file = new FileStream(path, FileMode.Open))
{
WaveTables = new WaveTableOscillator[6];
for (int i = 0; i < WaveTables.Length; ++i)
{
WaveTables[i] = WaveTableOscillator.Deserialize(file);
}
}
}
catch (IOException)
{
if (!Directory.Exists(directory))
{
Directory.CreateDirectory(directory);
}
using (var file = new FileStream(path, FileMode.Create))
{
WaveTables = new[]
{
new WaveTableOscillator(SineGenerator, 1, 1),
new WaveTableOscillator(TriangleGenerator, 20, DefaultSampleRate / 2),
new WaveTableOscillator(SawGenerator, 20, DefaultSampleRate / 2),
new WaveTableOscillator(SquareGenerator, 20, DefaultSampleRate / 2),
new WaveTableOscillator(HalfSquareGenerator, 20, DefaultSampleRate / 2),
new WaveTableOscillator(QuarterSquareGenerator, 20, DefaultSampleRate / 2),
};
foreach (var vt in WaveTables)
{
WaveTableOscillator.Serialize(file, vt);
}
}
}
}
/// <summary>
/// Устанавливает новый объект класса WaveTable.
/// </summary>
/// <param name="waveTable"></param>
public void SetWaveTable(WaveTableOscillator waveTable)
{
this.waveTable = waveTable;
this.waveTable.SetPhaseIncrement(phaseIncrement);
}