/// <summary>
/// For derived classes only.
/// </summary>
/// <param name="port">A reference to the midi port this buffer manager serves.</param>
/// <param name="access">The type of access the stream provides to the underlying buffer.</param>
/// <exception cref="ArgumentNullException">Thrown when <paramref name="port"/> is null.</exception>
protected MidiBufferManager(MidiPort port, FileAccess access)
{
Check.IfArgumentNull(port, nameof(port));
MidiPort = port;
StreamAccess = access;
}
/// <summary>
/// For derived classes only.
/// </summary>
/// <param name="port">A reference to the midi port this buffer manager serves.</param>
/// <param name="access">The type of access the stream provides to the underlying buffer.</param>
/// <exception cref="ArgumentNullException">Thrown when <paramref name="port"/> is null.</exception>
internal MidiBufferManager(MidiPort port, FileAccess access)
{
Contract.Requires(port != null);
Check.IfArgumentNull(port, "port");
this.MidiPort = port;
this.StreamAccess = access;
}
/// <summary>
/// Returns the <paramref name="buffer"/> to the pool.
/// </summary>
/// <param name="buffer">Must not be null.</param>
/// <remarks>Call this method when the <paramref name="buffer"/> is no longer needed.</remarks>
public override void ReturnBuffer(MidiBufferStream buffer)
{
Check.IfArgumentNull(buffer, "buffer");
// do not re-add buffers during a Reset (or Close) that is meant to return all
// buffers from the MidiInPort to the buffer manager.
if (!MidiPort.HasStatus(MidiPortStatus.Reset | MidiPortStatus.Closed))
{
// returned buffers are added to the midi in port again
// to make them available for recording sysex.
AddBufferToPort(buffer);
}
else
{
OnUnprepareBuffer(buffer);
base.ReturnBuffer(buffer);
}
}