/// <summary>
/// Resizes <see cref="MidiFile"/> to the specified length.
/// </summary>
/// <param name="midiFile"><see cref="MidiFile"/> to resize.</param>
/// <param name="length">New length of the <paramref name="midiFile"/>.</param>
/// <exception cref="ArgumentNullException"><paramref name="midiFile"/> is null. -or-
/// <paramref name="length"/> is null.</exception>
public static void Resize(this MidiFile midiFile, ITimeSpan length)
{
ThrowIfArgument.IsNull(nameof(midiFile), midiFile);
ThrowIfArgument.IsNull(nameof(length), length);
if (midiFile.IsEmpty())
{
return;
}
var tempoMap = midiFile.GetTempoMap();
var duration = midiFile.GetDuration <MidiTimeSpan>();
var oldLength = TimeConverter.ConvertTo(duration, length.GetType(), tempoMap);
var ratio = TimeSpanUtilities.Divide(length, oldLength);
ResizeByRatio(midiFile, ratio);
}
/// <summary>
/// Resizes <see cref="MidiFile"/> to the specified length.
/// </summary>
/// <param name="midiFile"><see cref="MidiFile"/> to resize.</param>
/// <param name="length">New length of the <paramref name="midiFile"/>.</param>
/// <exception cref="ArgumentNullException"><paramref name="midiFile"/> is null. -or-
/// <paramref name="length"/> is null.</exception>
public static void Resize(this MidiFile midiFile, ITimeSpan length)
{
ThrowIfArgument.IsNull(nameof(midiFile), midiFile);
ThrowIfArgument.IsNull(nameof(length), length);
var lastTime = midiFile.GetTimedEvents().LastOrDefault()?.Time ?? 0;
if (lastTime == 0)
{
return;
}
var tempoMap = midiFile.GetTempoMap();
var oldLength = TimeConverter.ConvertTo((MidiTimeSpan)lastTime, length.GetType(), tempoMap);
var ratio = TimeSpanUtilities.Divide(length, oldLength);
ResizeByRatio(midiFile, ratio);
}
public static void Resize(this MidiFile midiFile, ITimeSpan length)
{
ThrowIfArgument.IsNull(nameof(midiFile), midiFile);
ThrowIfArgument.IsNull(nameof(length), length);
// TODO: create method to get absolute time (or last time...)
var lastTime = midiFile.GetTimedEvents().LastOrDefault()?.Time;
if (lastTime.GetValueOrDefault() == 0)
{
return;
}
var tempoMap = midiFile.GetTempoMap();
var oldLength = TimeConverter.ConvertTo((MidiTimeSpan)lastTime.Value, length.GetType(), tempoMap);
var ratio = TimeSpanUtilities.Divide(length, oldLength);
ResizeByRatio(midiFile, ratio);
}
/// <summary>
/// Subtracts a time span from the current one.
/// </summary>
/// <remarks>
/// If <paramref name="timeSpan"/> and the current time span have the same type,
/// the result time span will be of this type too; otherwise - of the <see cref="MathTimeSpan"/>.
/// </remarks>
/// <param name="timeSpan">Time span to subtract from the current one.</param>
/// <param name="mode">Mode of the operation that defines meaning of time spans the
/// operation will be performed on.</param>
/// <returns>Time span that is a difference between the <paramref name="timeSpan"/> and the
/// current time span.</returns>
public ITimeSpan Subtract(ITimeSpan timeSpan, TimeSpanMode mode)
{
ThrowIfArgument.IsNull(nameof(timeSpan), timeSpan);
return(TimeSpanUtilities.Subtract(this, timeSpan, mode));
}