/// <summary>
/// Sends a Program Change message to this MIDI output device.
/// </summary>
/// <param name="channel">The channel.</param>
/// <param name="instrument">The instrument.</param>
/// <exception cref="ArgumentOutOfRangeException">channel or instrument is out-of-range.
/// </exception>
/// <exception cref="InvalidOperationException">The device is not open.</exception>
/// <exception cref="DeviceException">The message cannot be sent.</exception>
/// <remarks>
/// A Program Change message is used to switch among instrument settings, generally
/// instrument voices. An instrument conforming to General Midi 1 will have the
/// instruments described in the <see cref="Instrument"/> enum; other instruments
/// may have different instrument sets.
/// </remarks>
public void SendProgramChange(Channel channel, Instrument instrument)
{
lock (this)
{
CheckOpen();
CheckReturnCode(Win32API.midiOutShortMsg(handle, ShortMsg.EncodeProgramChange(
channel, instrument)));
}
}
/// <summary>
/// Sends a Pitch Bend message to this MIDI output device.
/// </summary>
/// <param name="channel">The channel.</param>
/// <param name="value">The pitch bend value, 0..16383, 8192 is centered.</param>
/// <exception cref="ArgumentOutOfRangeException">channel or value is out-of-range.
/// </exception>
/// <exception cref="InvalidOperationException">The device is not open.</exception>
/// <exception cref="DeviceException">The message cannot be sent.</exception>
public void SendPitchBend(Channel channel, int value)
{
lock (this)
{
CheckOpen();
CheckReturnCode(Win32API.midiOutShortMsg(handle, ShortMsg.EncodePitchBend(channel,
value)));
}
}
/// <summary>
/// Sends a Control Change message to this MIDI output device.
/// </summary>
/// <param name="channel">The channel.</param>
/// <param name="control">The control.</param>
/// <param name="value">The new value 0..127.</param>
/// <exception cref="ArgumentOutOfRangeException">channel, control, or value is
/// out-of-range.</exception>
/// <exception cref="InvalidOperationException">The device is not open.</exception>
/// <exception cref="DeviceException">The message cannot be sent.</exception>
public void SendControlChange(Channel channel, Control control, int value)
{
lock (this)
{
CheckOpen();
CheckReturnCode(Win32API.midiOutShortMsg(handle, ShortMsg.EncodeControlChange(
channel, control, value)));
}
}
/// <summary>
/// Sends a Note Off message to this MIDI output device.
/// </summary>
/// <param name="channel">The channel.</param>
/// <param name="pitch">The pitch.</param>
/// <param name="velocity">The velocity 0..127.</param>
/// <exception cref="ArgumentOutOfRangeException">channel, note, or velocity is
/// out-of-range.</exception>
/// <exception cref="InvalidOperationException">The device is not open.</exception>
/// <exception cref="DeviceException">The message cannot be sent.</exception>
public void SendNoteOff(Channel channel, Pitch pitch, int velocity)
{
lock (this)
{
CheckOpen();
CheckReturnCode(Win32API.midiOutShortMsg(handle, ShortMsg.EncodeNoteOff(channel,
pitch, velocity)));
}
}
/// <summary>
/// Sends a Note On message to Channel10 of this MIDI output device.
/// </summary>
/// <param name="percussion">The percussion.</param>
/// <param name="velocity">The velocity 0..127.</param>
/// <remarks>This is simply shorthand for a Note On message on Channel10 with a
/// percussion-specific note, so there is no corresponding message to receive from an input
/// device.</remarks>
/// <exception cref="ArgumentOutOfRangeException">percussion or velocity is out-of-range.
/// </exception>
/// <exception cref="InvalidOperationException">The device is not open.</exception>
/// <exception cref="DeviceException">The message cannot be sent.</exception>
public void SendPercussion(Percussion percussion, int velocity)
{
lock (this)
{
CheckOpen();
CheckReturnCode(Win32API.midiOutShortMsg(handle, ShortMsg.EncodeNoteOn(
Channel.Channel10, (Pitch)percussion,
velocity)));
}
}
/// <summary>
/// The input callback for midiOutOpen.
/// </summary>
private void InputCallback(Win32API.HMIDIIN hMidiIn, Win32API.MidiInMessage wMsg,
UIntPtr dwInstance, UIntPtr dwParam1, UIntPtr dwParam2)
{
isInsideInputHandler = true;
try
{
if (wMsg == Win32API.MidiInMessage.MIM_DATA)
{
Channel channel;
Pitch pitch;
int velocity;
Control control;
int value;
Instrument instrument;
UInt32 win32Timestamp;
if (RawMessage != null)
{
RawMessage((uint)dwParam1, (uint )dwParam2);
}
if (ShortMsg.IsNoteOn(dwParam1, dwParam2))
{
if (NoteOn != null)
{
ShortMsg.DecodeNoteOn(dwParam1, dwParam2, out channel, out pitch,
out velocity, out win32Timestamp);
NoteOn(new NoteOnMessage(this, channel, pitch, velocity,
clock == null ? win32Timestamp / 1000f : clock.Time));
}
}
else if (ShortMsg.IsNoteOff(dwParam1, dwParam2))
{
if (NoteOff != null)
{
ShortMsg.DecodeNoteOff(dwParam1, dwParam2, out channel, out pitch,
out velocity, out win32Timestamp);
NoteOff(new NoteOffMessage(this, channel, pitch, velocity,
clock == null ? win32Timestamp / 1000f : clock.Time));
}
}
else if (ShortMsg.IsControlChange(dwParam1, dwParam2))
{
if (ControlChange != null)
{
ShortMsg.DecodeControlChange(dwParam1, dwParam2, out channel,
out control, out value, out win32Timestamp);
ControlChange(new ControlChangeMessage(this, channel, control, value,
clock == null ? win32Timestamp / 1000f : clock.Time));
}
}
else if (ShortMsg.IsProgramChange(dwParam1, dwParam2))
{
if (ProgramChange != null)
{
ShortMsg.DecodeProgramChange(dwParam1, dwParam2, out channel,
out instrument, out win32Timestamp);
ProgramChange(new ProgramChangeMessage(this, channel, instrument,
clock == null ? win32Timestamp / 1000f : clock.Time));
}
}
else if (ShortMsg.IsPitchBend(dwParam1, dwParam2))
{
if (PitchBend != null)
{
ShortMsg.DecodePitchBend(dwParam1, dwParam2, out channel,
out value, out win32Timestamp);
PitchBend(new PitchBendMessage(this, channel, value,
clock == null ? win32Timestamp / 1000f : clock.Time));
}
}
else
{
// Unsupported messages are ignored.
}
}
}
finally
{
isInsideInputHandler = false;
}
}