COutputport

COutputport

Purpose: Handles all output midi ports and performs DLS load and unload.
Remark: The returns values are based on the DirectX9 constants except DM_FAILED
The functions raise a CDMusicException exception type with the error data.
Member functions:

Function: Initialize
Declaration: void COutputPort::Initialize(CDirectMusic &pDMusic)
Purpose: Initializes the output port object
Parameters:

pDMusic [in]: Reference to the main DirectMusic object

Returns:

S_OK

Succeeds

Throws:

DM_FAILED

Error, see DirectMidi causes

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Function: GetNumPorts
Declaration: DWORD COutputPort::GetNumPorts()
Purpose: Returns the number of output midi ports in the system
Parameters: none

Returns:

Number of ports

Number of ouput midi ports, if 0 is returned, no ouput ports present

Throws:

E_INVALIDARG	Invalid argument
E_POINTER	An invalid pointer, usually NULL, was passed as a parameter
E_NOINTERFACE	No object interface is available
DM_FAILED	Error, see DirectMidi causes

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Function: GetPortInfo
Declaration: HRESULT COutputPort::GetPortInfo(DWORD dwNumPort,LPINFOPORT lpInfoPort)
Purpose: Gets the port info structure of a given number of midi port
Parameters:

dwNumPort [in] : Number of midi port
lpInfoPort [out]: Address of an INFOPORT structure

Returns:

S_FALSE	There is no port with that index value
S_OK	Succeeds

Throws:

DM_FAILED	Error, see DirectMidi causes
E_INVALIDARG	Invalid argument
E_POINTER	An invalid pointer, usually NULL, was passed as a parameter
E_NOINTERFACE	No object interface is available

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Function: GetActivatedPortInfo
Declaration: HRESULT COuputPort::GetActivatedPortInfo(LPINFOPORT lpInfoPort)
Purpose: Gets the port info structure of the current activated midi port
Parameters:

lpInfoPort [out]: Address of an INFOPORT structure

Returns:

S_OK

Succeeds

Throws:

DM_FAILED	Error, see DirectMidi causes
E_INVALIDARG	Invalid argument
E_POINTER	An invalid pointer, usually NULL, was passed as a parameter

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Function: ActivatePort
Declaration: HRESULT COutputPort::ActivatePort(LPINFOPORT InfoPort,DWORD dwSysExSize)
Purpose: Activate the output midi port providing a pointer to an INFOPORT structure with the port identification.
Allocate the buffer memory for outgoing system exclusive data
Parameters:

lpInfoPort [in] : Address of an INFOPORT structure
dwSysExSize [in]: Size of the buffer for system exclusive data. 32 bytes assumed

Returns:

S_OK

Succeeds

Throws:

S_FALSE	Error
DSERR_NODRIVER	No sound driver is available for use, or the given GUID is not a valid DirectSound device ID
E_NOINTERFACE	No object interface is available
DM_FAILED	Error, see DirectMidi causes
E_INVALIDARG	Invalid argument
DMUS_E_DSOUND_NOT_SET	The port could not be created because no DirectSound object has been specified
E_POINTER	An invalid pointer, usually NULL, was passed as a parameter
E_OUTOFMEMORY	Insufficient memory to complete the task

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Function: ActivatePortFromInterface
Declaration: HRESULT COuputtPort::ActivatePortFromInterface(IDirectMusicPort8* pPort,DWORD dwSysExSize)
Purpose: Activate the output midi port providing a pointer to an IDirectMusicPort8 interface pointer.
Allocate the buffer memory for outgoing system exclusive events.
Parameters:

IDirectMusicPort8 [in]: Address of an IDirectMusicPort8 interface pointer
dwSysExSize [in]: Size of the buffer for system exclusive data. 32 bytes assumed

Remarks:

The external IDirectMusicPort8 interface pointer doesn't have to be explicitly released

Returns:

S_OK

Succeeds

Throws:

S_FALSE	Error
DSERR_NODRIVER	No sound driver is available for use, or the given GUID is not a valid DirectSound device ID
E_NOINTERFACE	No object interface is available
DM_FAILED	Error, see DirectMidi causes
E_INVALIDARG	Invalid argument
DMUS_E_DSOUND_NOT_SET	The port could not be created because no DirectSound object has been specified
E_POINTER	An invalid pointer, usually NULL, was passed as a parameter
E_OUTOFMEMORY	Insufficient memory to complete the task

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Function: ReleasePort
Declaration: HRESULT COutputPort::ReleasePort()
Purpose: Releases the DirectMidi internal COM interfaces for a new port selection, this method is also called by the destructor
Parameters: none
Remarks: Call this member function to deactivate the selected output midi port in run-time

Returns:

S_OK	Succeeds
DM_FAILED	Error, see DirectMidi causes

Throws:

DSERR_NODRIVER

No sound driver is available for use, or the given GUID is not a valid DirectSound device ID

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Function: KsProperty
Declaration: HRESULT COutputPort::KsProperty(GUID Set,ULONG Id,ULONG Flags,LPVOID pvPropertyData,ULONG ulDataLength,PULONG pulBytesReturned)

Purpose: The KsProperty method retrieves or sets the value of a property for the midi port
Parameters:

Set [in]:Identifier of the property set. The following property-set GUIDs are predefined by DirectMusic: See table

Id [in]: Item within the property set

Flags [in]: One of the following flags to specify the operation: See table

pvPropertyData [in/out]: For a set operation, the address of a memory buffer containing data that represents the new value of the property. For a get operation, the address of a memory buffer big enough to hold the value of the property. For a basic support query, the address of a buffer at least a DWORD in size

ulDataLength [in]: Length of the buffer pointed to by pvPropertyData

pulBytesReturned [out]: On a KSPROPERTY_TYPE_GET or KSPROPERTY_TYPE_BASICSUPPORT call, address of a variable that receives the number of bytes returned in pvPropertyData by the port

Example: The following example code demonstrates the use of this property by setting a new latency for the synthesizer in milliseconds.

COutputPort.KsProperty(GUID_DMUS_PROP_WriteLatency,0,KSPROPERTY_TYPE_SET,(LPVOID)&dwLatency,sizeof(dwLatency),&ulDummy);

Returns:

S_OK	Succeeds
DMUS_E_UNKNOWN_PROPERTY	The property set or item is not implemented by this port

Throws:

E_POINTER	An invalid pointer, usually NULL, was passed as a parameter
E_OUTOFMEMORY	Insufficient memory to complete the task
E_NOTIMPL	The method is not implemented. This value might be returned if a driver does not support a feature necessary for the operation
E_INVALIDARG	Invalid argument. Often, this error results from failing to initialize the dwSize member of a structure before passing it to the method
E_FAIL	The method did not succeed
DM_FAILED	Error, see DirectMidi causes

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Function: SetBuffer
Declaration: HRESULT COutputPort::SetBuffer(DWORD dwBufferSize)
Purpose: Sets internal buffer for storing outgoing MIDI messages
Parameters:

dwBufferSize [in]: Size for SysEx data

Returns:

S_OK

Succeeds

Throws:

E_INVALIDARG	Invalid argument. Often, this error results from failing to initialize the dwSize member of a structure before passing it to the method
E_POINTER	An invalid pointer, usually NULL, was passed as a parameter
E_OUTOFMEMORY	Insufficient memory to complete the task
E_NOINTERFACE	No object interface is available
DM_FAILED	Error, see DirectMidi causes

Function: RemoveBuffer
Declaration: HRESULT COutputPort::RemoveBuffer()
Purpose: Removes the internal buffer
Returns:

S_FALSE	Error
S_OK	Succeeds

Function: SetPortParams
Declaration: HRESULT COutputPort::SetPortParams(DWORD dwVoices,DWORD dwAudioChannels,DWORD dwChannelGroups,DWORD dwEffectFlags,DWORD dwSampleRate)
Purpose: Sets the port synthesis parameters
Parameters:

dwVoices [in]:

Number of voices required on this port. This is not an absolute maximum; the port can create additional temporary voices to enable smooth transitions when lower-priority voices have to be dropped

dwAudioChannels [in]:

Desired number of output channels

dwChannelGroups [in]:

Number of channel groups to be allocated on this port

dwEffectFlags [in]:

Flags indicating which special effects are wanted. The following values are defined:

Flag	Description
DMUS_EFFECT_NONE	No effects are wanted
DMUS_EFFECT_REVERB	Reverb is wanted
DMUS_EFFECT_CHORUS	Chorus is wanted
DMUS_EFFECT_DELAY	Delay is wanted

Or one of the followings defined in CDirectMidi.h: Synthesizer Effects

dwSampleRate [in]:

Desired sample rate, in hertz

Returns: None

Throws: None

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Function: SetNumChannelGroups
Declaration: HRESULT COutputPort::SetNumChannelGroups(DWORD dwChannelGroups)
Purpose: This method changes the number of channel groups that the application needs on the port
Parameters:

dwChannelGroups [in]:Number of channel groups on this port that the application wants to allocate

Returns:

S_OK

Succeeds

Throws:

E_OUTOFMEMORY	Insufficient memory to complete the task
E_NOTIMPL	The method is not implemented. This value might be returned if a driver does not support a feature necessary for the operation
E_INVALIDARG	Invalid argument. Often, this error results from failing to initialize the dwSize member of a structure before passing it to the method
E_FAIL	The method did not succeed
DM_FAILED	Error, see DirectMidi causes

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Function: GetNumChannelGroups
Declaration: HRESULT COutputPort::GetNumChannelGroups(LPDWORD pdwChannelGroups)
Purpose: This method retrieves the number of channel groups on the port
Parameters:

pdwChannelGroups [out]:Address of a variable that receives the number of channel groups

Returns:

S_OK

Succeeds

Throws:

E_OUTOFMEMORY	Insufficient memory to complete the task
E_NOTIMPL	The method is not implemented. This value might be returned if a driver does not support a feature necessary for the operation
E_INVALIDARG	Invalid argument. Often, this error results from failing to initialize the dwSize member of a structure before passing it to the method
E_FAIL	The method did not succeed
DM_FAILED	Error, see DirectMidi causes

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Function: SetChannelPriority
Declaration: HRESULT COutputPort::SetChannelPriority(DWORD dwChannelGroup,DWORD dwChannel,DWORD dwPriority)
Purpose: This method sets the priority of a MIDI channel
Parameters:

dwChannelGroup [in]: Group that the channel is in. This value must be 1 or greater
dwChannel [in]: Index of the channel on the group
dwPriority [in]: The priority ranking

Returns:

S_OK

Succeeds

Throws:

E_OUTOFMEMORY	Insufficient memory to complete the task
E_NOTIMPL	The method is not implemented. This value might be returned if a driver does not support a feature necessary for the operation
E_INVALIDARG	Invalid argument. Often, this error results from failing to initialize the dwSize member of a structure before passing it to the method
E_FAIL	The method did not succeed
DM_FAILED	Error, see DirectMidi causes

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Function: GetChannelPriority
Declaration: HRESULT COutputPort::GetChannelPriority(DWORD dwChannelGroup,DWORD dwChannel,LPDWORD pdwPriority)
Purpose: This method retrieves the priority of a MIDI channel
Parameters:

dwChannelGroup [in]: Group that the channel is in. This value must be 1 or greater
dwChannel [in]: Index of the channel on the group
pdwPriority [out]: Address of a variable that receives the priority ranking

Remarks:

The following values, defined in Dmusicc.h, each represent a range of priorities. They are listed here in descending order of priority.

Value

DAUD_CRITICAL_VOICE_PRIORITY

DAUD_HIGH_VOICE_PRIORITY

DAUD_STANDARD_VOICE_PRIORITY

DAUD_LOW_VOICE_PRIORITY

DAUD_PERSIST_VOICE_PRIORITY

The following values express the default ranking of the channels within a range, according to the DLS standard. They are listed here in descending order. Channel 10, the percussion channel, has the highest priority

Value

DAUD_CHAN10_VOICE_PRIORITY_OFFSET

DAUD_CHAN1_VOICE_PRIORITY_OFFSET

DAUD_CHAN2_VOICE_PRIORITY_OFFSET

DAUD_CHAN3_VOICE_PRIORITY_OFFSET

DAUD_CHAN4_VOICE_PRIORITY_OFFSET

DAUD_CHAN5_VOICE_PRIORITY_OFFSET

DAUD_CHAN6_VOICE_PRIORITY_OFFSET

DAUD_CHAN7_VOICE_PRIORITY_OFFSET

DAUD_CHAN8_VOICE_PRIORITY_OFFSET

DAUD_CHAN9_VOICE_PRIORITY_OFFSET

DAUD_CHAN11_VOICE_PRIORITY_OFFSET

DAUD_CHAN12_VOICE_PRIORITY_OFFSET

DAUD_CHAN13_VOICE_PRIORITY_OFFSET

DAUD_CHAN14_VOICE_PRIORITY_OFFSET

DAUD_CHAN15_VOICE_PRIORITY_OFFSET

DAUD_CHAN16_VOICE_PRIORITY_OFFSET

The priority of a channel is represented by a range plus an offset. For example, DAUD_HIGH_VOICE_PRIORITY combined with DAUD_CHAN10_VOICE_PRIORITY_OFFSET represents the highest priority within the high range. Combined range and offset values for the standard range are defined for convenience in Dmusicc.h as DAUD_CHAN1_DEF_VOICE_PRIORITY, .DAUD_CHAN2_DEF_VOICE_PRIORITY, and so on.

Channels that have the same priority value have equal priority, regardless of which channel group they belong to

Returns:

S_OK

Succeeds

Throws:

DM_FAILED

Error, see DirectMidi causes

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Function: GetSynthStats
Declaration: HRESULT COutputPort::GetSynthStats(LPSYNTHSTATS SynthStats)
Purpose: This method retrieves information about the state of the synthesizer
Parameters: SynthStats [out]: A pointer to a SYNTHSTATS structure
Returns:

S_OK

Succeeds

Throws:

E_NOTIMPL	The method is not implemented. This value might be returned if a driver does not support a feature necessary for the operation
E_INVALIDARG	Invalid argument. Often, this error results from failing to initialize the dwSize member of a structure before passing it to the method
E_POINTER	An invalid pointer, usually NULL, was passed as a parameter
DM_FAILED	Error, see DirectMidi causes

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Function: GetReferenceClock
Declaration: IReferenceClock* COutputPort::GetReferenceClock()
Purpose: Returns a pointer to the internal IReferenceClock interface
Parameters: none

Returns:

IReferenceClock

Pointer to the IReferenceClock interface

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Function: GetFormat
Declaration: HRESULT COutputPort::GetFormat(LPWAVEFORMATEX pWaveFormatEx,LPDWORD pdwWaveFormatExSize,LPDWORD pdwBufferSize)
Purpose: Retrieves information about the WAV format specified in the COutputPort::SetPortParams structure, and the recommended size of the buffer to use for waveform output. The information can be used to create a compatible DirectSound buffer for the port
Parameters:

pWaveFormatEx [out]: Address of the WAVEFORMATEX structure that receives information about the format. This value can be NULL. See Remarks
pdwWaveFormatExSize [out]: Address of a variable that specifies or receives the size of the structure
pdwBufferSize [out]: Address of a variable that receives the recommended size of the DirectSound buffer

Remarks:

Remarks

The WAVEFORMATEX structure can have a variable length that depends on the details of the format. Before retrieving the format description, the application should query the synthesizer object for the size of the format by calling this method and specifying NULL for the pWaveFormatEx parameter. The size of the structure is returned in the variable pointed to by pdwWaveFormatExSize. The application can then allocate sufficient memory and call GetFormat again to retrieve the format description.

If pWaveFormatEx is not NULL, DirectMusic writes, at most, pdwWaveFormatExSize bytes to the structure.

Returns:

S_OK

Succeeds

Throws:

E_POINTER	An invalid pointer, usually NULL, was passed as a parameter
DM_FAILED	Error, see DirectMidi causes

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Function: AllocateMemory
Declaration: HRESULT COutputPort::AllocateMemory(CSampleInstrument &pSampleInstrument)
Purpose: Prepares the port for a wave-table memory access, obtains the download interfaces and allocates the wave and instrument data
Parameters:

pSampleInstrument [in]: A reference to a CSampleInstrument object

Returns:

S_OK

Succeeds

Throws:

E_FAIL	The method did not succeed
DMUS_E_NOT_DOWNLOADED_TO_PORT	The object cannot be unloaded because it is not present on the port
DMUS_E_INVALID_DOWNLOADID	An invalid download identifier was used in the process of creating a download buffer
E_NOTIMPL	The method is not implemented. This value might be returned if a driver does not support a feature necessary for the operation
E_OUTOFMEMORY	Insufficient memory to complete the task
E_INVALIDARG	Invalid argument. Often, this error results from failing to initialize the dwSize member of a structure before passing it to the method
E_POINTER	An invalid pointer, usually NULL, was passed as a parameter
DM_FAILED	Error, see DirectMidi causes

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Function: DownloadInstrument (CInstrument)
Declaration: HRESULT COutputPort::DownloadInstrument(CInstrument &pInstrument)
Purpose: Downloads a given instrument to the port wave-table memory
Parameters:

pInstrument [in]: Reference to a CInstrument object

Returns:

S_OK	Succeeds
DM_FAILED	Error, see DirectMidi causes

Throws:

E_POINTER	An invalid pointer, usually NULL, was passed as a parameter
E_NOTIMPL	The method is not implemented. This value might be returned if a driver does not support a feature necessary for the operation
DMUS_E_NOT_DOWNLOADED_TO_PORT	The object cannot be unloaded because it is not present on the port
E_OUTOFMEMORY	Insufficient memory to complete the task

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Function: DownloadInstrument (CSampleInstrument)
Declaration: HRESULT COutputPort::DownloadInstrument(CSampleInstrument &pSampleInstrument)
Purpose: Downloads a given sample instrument to the port wave-table memory
Parameters:

pSampleInstrument [in]: Reference to a CSampleInstrument object

Returns:

S_OK

Succeeds

Throws:

E_POINTER	An invalid pointer, usually NULL, was passed as a parameter
DM_FAILED	Error, see DirectMidi causes
E_FAIL	The method did not succeed
DMUS_E_ALREADY_DOWNLOADED	The buffer has already been downloaded
DMUS_E_BADARTICULATION	Invalid articulation chunk in DLS collection
DMUS_E_BADINSTRUMENT	Invalid instrument chunk in DLS collection
DMUS_E_BADOFFSETTABLE	The offset table has errors
DMUS_E_BADWAVE	Corrupt wave header
DMUS_E_BADWAVELINK	The wave-link chunk in DLS collection points to invalid wave
DMUS_E_BUFFERNOTSET	No buffer was prepared for the data
DMUS_E_NOARTICULATION	Articulation missing from an instrument in the DLS collection
DMUS_E_NOTMONO	The wave chunk has more than one interleaved channel. DLS format requires mono
DMUS_E_NOTPCM	Waveform data is not in PCM format
DMUS_E_UNKNOWNDOWNLOAD	The synthesizer does not support this type of download

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Function: UnloadInstrument (CInstrument)
Declaration: HRESULT COutputPort::UnloadInstrument(CInstrument &pInstrument)
Purpose: Unloads an instrument to the port wave-table memory and frees its space from the synthesizer
Parameters:

pInstrument [in]: Reference to a CInstrument object

Returns:

S_OK	Succeeds
DM_FAILED	Error, see DirectMidi causes

Throws:

E_POINTER	An invalid pointer, usually NULL, was passed as a parameter
E_NOTIMPL	The method is not implemented. This value might be returned if a driver does not support a feature necessary for the operation
DMUS_E_NOT_DOWNLOADED_TO_PORT	The object cannot be unloaded because it is not present on the port

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Function: UnloadInstrument (CSampleInstrument)
Declaration: HRESULT COutputPort::UnloadInstrument(CSampleInstrument &pSampleInstrument)
Purpose: Unloads a sample instrument to the port wave-table memory and frees its space from the synthesizer
Parameters:

pSampleInstrument [in]: Reference to a CSampleInstrument object

Returns:

S_OK

Succeeds

Throws:

E_NOINTERFACE	No object interface is available
DMUS_E_SYNTHNOTCONFIGURED	The synthesizer is not properly configured or opened
DM_FAILED	Error, see DirectMidi causes

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Function: DeallocateMemory
Declaration: HRESULT COutputPort::DeallocateMemory(CSampleInstrument &pSampleInstrument)
Purpose: Deallocates the wave-table memory space and releases the download interfaces
Parameters:

pSampleInstrument [in]: Reference to a CSampleInstrument object

Returns:

S_OK

Succeeds

Throws:

DM_FAILED

Error, see DirectMidi causes

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Function: CompactMemory
Declaration: HRESULT COutputPort::CompactMemory()
Purpose: This method instructs the port to compact DLS or wave-table memory, thus making the largest possible contiguous chunk of memory available for new instruments to be downloaded
Parameters: void

Returns:

S_OK

Succeeds

Throws:

E_OUTOFMEMORY	Insufficient memory to complete the task
E_NOTIMPL	The method is not implemented. This value might be returned if a driver does not support a feature necessary for the operation
E_INVALIDARG	Invalid argument. Often, this error results from failing to initialize the dwSize member of a structure before passing it to the method
E_FAIL	The method did not succeed
DM_FAILED	Error, see DirectMidi causes

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Function: SendMidiMsg (Long version)
Declaration: HRESULT COutputPort::SendMidiMsg(LPBYTE lpMsg,DWORD dwLength,DWORD dwChannel,DWORD dwChannelGroup)
Purpose: Sends any kind of data to the port (typically a MIDI system exclusive message)
Parameters:

lpMsg [in]: Address of a buffer containing the data
dwLength [in]: Size of the data, in bytes
dwChannel [in]: Channel group to which the message belongs
dwChannelGroup [in]: Channel group. Each channel group is a set of 16 MIDI channels

Returns:

S_OK

Succeeds

Throws:

DM_FAILED	Error, see DirectMidi causes
E_OUTOFMEMORY	Insufficient memory to complete the task
E_NOTIMPL	The method is not implemented. This value might be returned if a driver does not support a feature necessary for the operation
S_FALSE	Error
E_POINTER	NULL pointer argument
E_INVALIDARG	Invalid argument. Often, this error results from failing to initialize the dwSize member of a structure before passing it to the method
E_FAIL	The call to IReferenceClock::GetTime method did not succeed

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Function: SendMidiMsg (Short version)
Declaration: HRESULT COutputPort::SendMidiMsg(DWORD dwMsg,DWORD dwChannelGroup)
Purpose: Sends a typical MIDI 1.0 message to the port
Parameters:

dwMsg [in]: Variable containing the message
dwChannellGroup [in]: Channel group. Each channel group is a set of 16 MIDI channels

Returns:

S_OK

Succeeds

Throws:

DM_FAILED	Error, see DirectMidi causes
E_OUTOFMEMORY	Insufficient memory to complete the task
E_NOTIMPL	The method is not implemented. This value might be returned if a driver does not support a feature necessary for the operation
S_FALSE	Error
E_POINTER	NULL pointer argument
DMUS_E_INVALID_EVENT	The event either is not a valid MIDI message or makes use of running status and cannot be packed into the buffer
E_INVALIDARG	Invalid argument. Often, this error results from failing to initialize the dwSize member of a structure before passing it to the method
E_FAIL	The call to IReferenceClock::GetTime method did not succeed

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Function: SetEffect
Declaration: HRESULT COutputPort::SetEffect(BYTE Effect)
Purpose: Activates an audio effect in the port
Parameters:

Effect [in]: See available synthesizer effects

Returns:

DMUS_E_UNKNOWN_PROPERTY	The property set or item is not implemented by this port
S_OK	Succeeds

Throws:

E_FAIL	The method did not succeed
E_INVALIDARG	Invalid argument. Often, this error results from failing to initialize the dwSize member of a structure before passing it to the method
E_NOTIMPL	The method is not implemented. This value might be returned if a driver does not support a feature necessary for the operation
E_POINTER	An invalid pointer, usually NULL, was passed as a parameter
E_OUTOFMEMORY	Insufficient memory to complete the task
E_NOINTERFACE	No object interface is available
DM_FAILED	Error, see DirectMidi causes

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Function: EncodeMidiMsg
Declaration: DWORD COutputPort::EncodeMidiMsg(BYTE Status,BYTE DataByte1,BYTE DataByte2)
Purpose: Packs a separate midi message in a DWORD midi 1.0 message
Parameters:

Status [in]: Byte of status
DataByte1 [in]: First byte of data
DataByte2 [in]: Second byte of data

See DirectMidi Midi 1.0 messages

Returns: The encoded midi 1.0 message

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Function: EncodeMidiMsg
Declaration: DWORD COutputPort::EncodeMidiMsg(BYTE Command,BYTE Channel,BYTE DataByte1,BYTE DataByte2)
Purpose: Packs a separate midi message in a DWORD midi 1.0 message
Parameters:

Command [in]: Command byte
Status [in]: Byte of status
DataByte1 [in]: First byte of data
DataByte2 [in]: Second byte of data
See DirectMidi Midi 1.0 messages

Returns: The encoded midi 1.0 message

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