#include <MIDI_Interfaces/USBHostMIDI_Interface.hpp>

Detailed Description

A class for MIDI interfaces sending MIDI messages to a MIDI USB device connected to a Teensy's USB host port.

Requires a Teensy 3.6 or 4.1 and the USBHost_t36 library.

This one uses the default small buffer (similar to USBHost_t36's MIDIDevice).

See also: USBHostMIDI_Interface_BigBuffer for a bigger buffer.

Examples: USBHostMIDI_Interface-Passthrough.ino.

Definition at line 40 of file USBHostMIDI_Interface.hpp.

Inheritance diagram for USBHostMIDI_Interface:

Collaboration diagram for USBHostMIDI_Interface:

Initialization and polling
void	begin () override
	Initialize.
void	update () override
	Poll the backend (if necessary) and invoke the callbacks for any received MIDI messages, as well as sending them over the pipes connected to this interface.

Reading incoming MIDI messages
MIDIReadEvent	read ()
	Try reading and parsing a single incoming MIDI message.
ChannelMessage	getChannelMessage () const
	Return the received channel voice message.
SysCommonMessage	getSysCommonMessage () const
	Return the received system common message.
RealTimeMessage	getRealTimeMessage () const
	Return the received real-time message.
SysExMessage	getSysExMessage () const
	Return the received system exclusive message.

Buffering USB packets
bool	alwaysSendsImmediately () const
	Check if this USB interface always sends its USB packets immediately after sending a MIDI message.
void	neverSendImmediately ()
	Don't send the USB packets immediately after sending a MIDI message.
void	alwaysSendImmediately ()
	Send the USB packets immediately after sending a MIDI message.

Default MIDI Interfaces
void	setAsDefault ()
	Set this MIDI interface as the default interface.
static MIDI_Interface *	getDefault ()
	Return the default MIDI interface.

MIDI Input Callbacks
void	setCallbacks (MIDI_Callbacks *cb)
	Set the callbacks that will be called when a MIDI message is received.
void	setCallbacks (MIDI_Callbacks &cb)
	Set the callbacks that will be called when a MIDI message is received.

Connecting and disconnecting MIDI Pipes
void	connectSourcePipe (MIDI_Pipe *source)
	Fully connect a source pipe to this sink.
void	disconnectSourcePipes ()
	Disconnect all source pipes that sink to this sink (recursively).
bool	disconnect (TrueMIDI_Source &source)
	Disconnect the given source from this sink.
bool	disconnect (MIDI_Pipe &)=delete
bool	hasSourcePipe () const
	Check if this sink is connected to a source pipe.
MIDI_Pipe *	getSourcePipe () const
	Get a pointer to the pipe this sink is connected to, or nullptr if not connected.

Connecting and disconnecting MIDI Pipes
bool	disconnect (TrueMIDI_Sink &sink)
	Disconnect the given sink from this source.
bool	disconnect (MIDI_Pipe &)=delete
void	connectSinkPipe (MIDI_Pipe *sink)
	Fully connect a sink pipe to this source.
void	disconnectSinkPipes ()
	Disconnect all sink pipes that this source sinks to (recursively).
bool	hasSinkPipe () const
	Check if this source is connected to a sink pipe.
MIDI_Pipe *	getSinkPipe ()
	Get a pointer to the pipe this source is connected to, or nullptr if not connected.

Sending data over a MIDI Pipe
void	sourceMIDItoPipe (ChannelMessage)
	Send a MIDI Channel Message down the pipe.
void	sourceMIDItoPipe (SysExMessage)
	Send a MIDI System Exclusive message down the pipe.
void	sourceMIDItoPipe (SysCommonMessage)
	Send a MIDI System Common message down the pipe.
void	sourceMIDItoPipe (RealTimeMessage)
	Send a MIDI Real-Time message down the pipe.

Stalling the sink pipes and exclusive access
void	stall (MIDIStaller *cause=eternal_stall)
	Stall this MIDI source.
void	unstall (MIDIStaller *cause=eternal_stall)
	Un-stall the pipes connected to this source, so other sources are allowed to send again.
bool	isStalled () const
	Check if this source can write to the sinks it connects to.
MIDIStaller *	getStaller () const
	Get a pointer to whatever is causing this MIDI source to be stalled.
const char *	getStallerName () const
	Get the name of whatever is causing this MIDI source to be stalled.
void	handleStallers () const
	Give the code that is stalling the MIDI sink pipes the opportunity to do its job and un-stall the pipes.

Sending MIDI Channel Voice messages
void	send (ChannelMessage message)
	Send a MIDI Channel Voice message.
void	sendChannelMessage (MIDIMessageType m, Channel c, uint8_t d1, uint8_t d2, Cable cable=Cable_1)
	Send a 3-byte MIDI Channel Voice message.
void	sendNoteOn (MIDIAddress address, uint8_t velocity)
	Send a MIDI Note On event.
void	sendNoteOff (MIDIAddress address, uint8_t velocity)
	Send a MIDI Note Off event.
void	sendKeyPressure (MIDIAddress address, uint8_t pressure)
	Send a MIDI Key Pressure event.
void	sendControlChange (MIDIAddress address, uint8_t value)
	Send a MIDI Control Change event.
void	sendProgramChange (MIDIAddress address)
	Send a MIDI Program Change event.
void	sendChannelPressure (MIDIChannelCable address, uint8_t pressure)
	Send a MIDI Channel Pressure event.
void	sendPitchBend (MIDIChannelCable address, uint16_t value)
	Send a MIDI Pitch Bend event.

Sending MIDI System Common messages
void	sendSysCommon (MIDIMessageType m, Cable cable=Cable_1)
	Send a MIDI System Common message.
void	sendMTCQuarterFrame (uint8_t data, Cable cable=Cable_1)
	Send a MIDI Time Code Quarter Frame.
void	sendSongPositionPointer (uint16_t spp, Cable cable=Cable_1)
	Send a MIDI Song Position Pointer message.
void	sendSongSelect (uint8_t song, Cable cable=Cable_1)
	Send a MIDI Song Select message.
void	sendTuneRequest (Cable cable=Cable_1)
	Send a MIDI Tune Request.

Sending MIDI System Exclusive messages
void	sendSysEx (const uint8_t(&sysexdata)[N], Cable cable=Cable_1)
	Send a MIDI System Exclusive message.

Sending MIDI Real-Time messages
void	sendRealTime (MIDIMessageType rt, Cable cable=Cable_1)
	Send a MIDI Real-Time message.
void	sendTimingClock (Cable cable=Cable_1)
	Send a MIDI Timing Clock message.
void	sendStart (Cable cable=Cable_1)
	Send a MIDI Start message.
void	sendContinue (Cable cable=Cable_1)
	Send a MIDI Continue message.
void	sendStop (Cable cable=Cable_1)
	Send a MIDI Stop message.
void	sendActiveSensing (Cable cable=Cable_1)
	Send a MIDI Active Sensing message.
void	sendSystemReset (Cable cable=Cable_1)
	Send a MIDI System Reset message.

Flushing the MIDI send buffer
void	sendNow ()
	Causes all buffered messages to be sent immediately.

Deprecated
void	sendKP (MIDIAddress address, uint8_t pressure)
	Send a MIDI Key Pressure event.
void	sendCC (MIDIAddress address, uint8_t value)
	Send a MIDI Control Change event.
void	sendPC (MIDIAddress address)
	Send a MIDI Program Change event.
void	sendCP (MIDIChannelCable address, uint8_t pressure)
	Send a MIDI Channel Pressure event.
void	sendPB (MIDIChannelCable address, uint16_t value)
	Send a MIDI Pitch Bend event.

Enabling and disabling updatables
void	enable ()
	Enable this updatable: insert it into the linked list of instances, so it gets updated automatically.
void	disable ()
	Disable this updatable: remove it from the linked list of instances, so it no longer gets updated automatically.
bool	isEnabled () const
	Check if this updatable is enabled.
void	moveDown ()
	Move down this element in the list.

Underlying USB communication
USBHostMIDIBackend< 64 >	backend
	The (platform-specific) backend used for MIDI over USB communication.

Main initialization and updating methods
static void	beginAll ()
	Begin all enabled instances of this class.
static void	updateAll ()
	Update all enabled instances of this class.

Public Member Functions
	USBHostMIDI_Interface (USBHost &host)

Static Public Member Functions
static void	handleStall (MIDIInterface_t *self)
	Un-stall the given MIDI interface.
static void	updateIncoming (MIDIInterface_t *iface)
	Read, parse and dispatch incoming MIDI messages on the given interface.
static void	dispatchIncoming (MIDIInterface_t *iface, MIDIReadEvent event)
	Dispatch the given type of MIDI message from the given interface.
static void	swap (MIDI_Sink &a, MIDI_Sink &b)
static void	swap (MIDI_Source &a, MIDI_Source &b)
static const char *	getNameNull (MIDIStaller *s)
	Get the staller's name for debugging purposes.

Protected Member Functions
void	sinkMIDIfromPipe (ChannelMessage msg) override
	Accept an incoming MIDI Channel message from the source pipe.
void	sinkMIDIfromPipe (SysExMessage msg) override
	Accept an incoming MIDI System Exclusive message from the source pipe.
void	sinkMIDIfromPipe (SysCommonMessage msg) override
	Accept an incoming MIDI System Common message from the source pipe.
void	sinkMIDIfromPipe (RealTimeMessage msg) override
	Accept an incoming MIDI Real-Time message from the source pipe.
void	onChannelMessage (ChannelMessage message)
	Call the channel message callback and send the message to the sink pipe.
void	onSysExMessage (SysExMessage message)
	Call the SysEx message callback and send the message to the sink pipe.
void	onSysCommonMessage (SysCommonMessage message)
	Call the System Common message callback and send the message to the sink pipe.
void	onRealTimeMessage (RealTimeMessage message)
	Call the real-time message callback and send the message to the sink pipe.

Protected Attributes
MIDI_Pipe *	sourcePipe
MIDI_Pipe *	sinkPipe
Updatable< MIDI_Interface > *	next
Updatable< MIDI_Interface > *	previous

Static Protected Attributes
static DoublyLinkedList< Updatable< MIDI_Interface > >	updatables

Private Member Functions
void	sendChannelMessageImpl (ChannelMessage) override
	Low-level function for sending a MIDI channel voice message.
void	sendSysCommonImpl (SysCommonMessage) override
	Low-level function for sending a MIDI system common message.
void	sendSysExImpl (SysExMessage) override
	Low-level function for sending a system exclusive MIDI message.
void	sendRealTimeImpl (RealTimeMessage) override
	Low-level function for sending a MIDI real-time message.
void	sendNowImpl () override
	Low-level function for sending any buffered outgoing MIDI messages.
void	handleStall () override
	Call back that should finish any MIDI messages that are in progress, and un-stall the pipe or MIDI source as quickly as possible.
const char *	getName () const override
	Get the staller's name for debugging purposes.
virtual void	stallDownstream (MIDIStaller , MIDI_Source )
	Base case for recursive stall function.
virtual void	unstallDownstream (MIDIStaller , MIDI_Source )
	Base case for recursive un-stall function.
virtual MIDI_Sink *	getFinalSink ()
	Base case for recursive function.
void	disconnectSourcePipesShallow ()
	Disconnect only the first pipe connected to this sink.
virtual void	stallUpstream (MIDIStaller , MIDI_Sink )
	Base case for recursive stall function.
virtual void	unstallUpstream (MIDIStaller , MIDI_Sink )
	Base case for recursive un-stall function.
virtual MIDI_Source *	getInitialSource ()
	Base case for recursive function.
void	disconnectSinkPipesShallow ()
	Disconnect only the first pipe connected to this source.

Private Attributes
USBMIDI_Parser	parser
	Parses USB packets into MIDI messages.
USBMIDI_Sender	sender
	Sends USB MIDI messages.
bool	alwaysSendImmediately_
MIDI_Callbacks *	callbacks

Static Private Attributes
static MIDI_Interface *	DefaultMIDI_Interface

Constructor & Destructor Documentation

◆ USBHostMIDI_Interface()

USBHostMIDI_Interface ( USBHost & host )

inline

Definition at line 43 of file USBHostMIDI_Interface.hpp.

Member Function Documentation

◆ sendChannelMessageImpl()

void sendChannelMessageImpl ( ChannelMessage )

overrideprivatevirtualinherited

Low-level function for sending a MIDI channel voice message.

Implements MIDI_Interface.

◆ sendSysCommonImpl()

void sendSysCommonImpl ( SysCommonMessage )

overrideprivatevirtualinherited

Low-level function for sending a MIDI system common message.

Implements MIDI_Interface.

◆ sendSysExImpl()

void sendSysExImpl ( SysExMessage )

overrideprivatevirtualinherited

Low-level function for sending a system exclusive MIDI message.

Implements MIDI_Interface.

◆ sendRealTimeImpl()

void sendRealTimeImpl ( RealTimeMessage )

overrideprivatevirtualinherited

Low-level function for sending a MIDI real-time message.

Implements MIDI_Interface.

◆ sendNowImpl()

void sendNowImpl ( )

inlineoverrideprivatevirtualinherited

Low-level function for sending any buffered outgoing MIDI messages.

Implements MIDI_Interface.

Definition at line 39 of file USBMIDI_Interface.hpp.

◆ handleStall() [1/2]

void handleStall ( )

inlineoverrideprivatevirtualinherited

Call back that should finish any MIDI messages that are in progress, and un-stall the pipe or MIDI source as quickly as possible.

Implements MIDIStaller.

Definition at line 43 of file USBMIDI_Interface.hpp.

◆ handleStall() [2/2]

void handleStall ( MIDIInterface_t * self )

staticinherited

Un-stall the given MIDI interface.

Assumes the interface has been stalled because of a chunked SysEx messages. Waits until that message is finished.

Definition at line 124 of file MIDI_Interface.hpp.

◆ getName()

const char * getName ( ) const

inlineoverrideprivatevirtualinherited

Get the staller's name for debugging purposes.

Reimplemented from MIDIStaller.

Definition at line 45 of file USBMIDI_Interface.hpp.

◆ begin()

void begin ( )

overridevirtualinherited

Initialize.

Implements Updatable< MIDI_Interface >.

Examples: USBHostMIDI_Interface-Passthrough.ino.

◆ update()

void update ( )

overridevirtualinherited

Poll the backend (if necessary) and invoke the callbacks for any received MIDI messages, as well as sending them over the pipes connected to this interface.

Implements MIDI_Interface.

Examples: USBHostMIDI_Interface-Passthrough.ino.

◆ read()

MIDIReadEvent read ( )

inherited

Try reading and parsing a single incoming MIDI message.

Returns: Returns the type of the message read, or MIDIReadEvent::NO_MESSAGE if no MIDI message was available.

◆ getChannelMessage()

ChannelMessage getChannelMessage ( ) const

inherited

Return the received channel voice message.

◆ getSysCommonMessage()

SysCommonMessage getSysCommonMessage ( ) const

inherited

Return the received system common message.

◆ getRealTimeMessage()

RealTimeMessage getRealTimeMessage ( ) const

inherited

Return the received real-time message.

◆ getSysExMessage()

SysExMessage getSysExMessage ( ) const

inherited

Return the received system exclusive message.

◆ alwaysSendsImmediately()

bool alwaysSendsImmediately ( ) const

inlineinherited

Check if this USB interface always sends its USB packets immediately after sending a MIDI message.

The default value depends on the MIDI USB backend being used: true for the MIDIUSB library, and false for the Teensy Core USB MIDI functions (because they have a short timeout).

Definition at line 117 of file USBMIDI_Interface.hpp.

◆ neverSendImmediately()

void neverSendImmediately ( )

inlineinherited

Don't send the USB packets immediately after sending a MIDI message.

By disabling immediate transmission, packets are buffered until you call sendNow() or until a timeout is reached, so multiple MIDI messages can be transmitted in a single USB packet. This is more efficient and results in a higher maximum bandwidth, but it could increase latency when used incorrectly.

Definition at line 124 of file USBMIDI_Interface.hpp.

◆ alwaysSendImmediately()

void alwaysSendImmediately ( )

inlineinherited

Send the USB packets immediately after sending a MIDI message.

See also: neverSendImmediately()

Definition at line 127 of file USBMIDI_Interface.hpp.

◆ setAsDefault()

void setAsDefault ( )

inherited

Set this MIDI interface as the default interface.

Definition at line 41 of file MIDI_Interface.cpp.

◆ getDefault()

MIDI_Interface * getDefault ( )

staticinherited

Return the default MIDI interface.

If the default MIDI interface was configured explicitly using setAsDefault(), that interface is returned. If it wasn't set, or if that MIDI interface no longer exists, this function returns the newest MIDI interface, the one that was constructed most recently. If no MIDI interfaces exist, nullptr is returned.

Definition at line 48 of file MIDI_Interface.cpp.

◆ setCallbacks() [1/2]

void setCallbacks ( MIDI_Callbacks * cb )

inlineinherited

Set the callbacks that will be called when a MIDI message is received.

Parameters

cb	A pointer to the callback object.

Definition at line 58 of file MIDI_Interface.hpp.

◆ setCallbacks() [2/2]

void setCallbacks ( MIDI_Callbacks & cb )

inlineinherited

Set the callbacks that will be called when a MIDI message is received.

Parameters

cb	A reference to the callback object.

Definition at line 62 of file MIDI_Interface.hpp.

◆ sinkMIDIfromPipe() [1/4]

void sinkMIDIfromPipe ( ChannelMessage msg )

inlineoverrideprotectedinherited

Accept an incoming MIDI Channel message from the source pipe.

Definition at line 91 of file MIDI_Interface.hpp.

◆ sinkMIDIfromPipe() [2/4]

void sinkMIDIfromPipe ( SysExMessage msg )

inlineoverrideprotectedinherited

Accept an incoming MIDI System Exclusive message from the source pipe.

Definition at line 93 of file MIDI_Interface.hpp.

◆ sinkMIDIfromPipe() [3/4]

void sinkMIDIfromPipe ( SysCommonMessage msg )

inlineoverrideprotectedinherited

Accept an incoming MIDI System Common message from the source pipe.

Definition at line 95 of file MIDI_Interface.hpp.

◆ sinkMIDIfromPipe() [4/4]

void sinkMIDIfromPipe ( RealTimeMessage msg )

inlineoverrideprotectedinherited

Accept an incoming MIDI Real-Time message from the source pipe.

Definition at line 97 of file MIDI_Interface.hpp.

◆ onChannelMessage()

void onChannelMessage ( ChannelMessage message )

protectedinherited

Call the channel message callback and send the message to the sink pipe.

Definition at line 102 of file MIDI_Interface.cpp.

◆ onSysExMessage()

void onSysExMessage ( SysExMessage message )

protectedinherited

Call the SysEx message callback and send the message to the sink pipe.

Definition at line 104 of file MIDI_Interface.cpp.

◆ onSysCommonMessage()

void onSysCommonMessage ( SysCommonMessage message )

protectedinherited

Call the System Common message callback and send the message to the sink pipe.

Definition at line 107 of file MIDI_Interface.cpp.

◆ onRealTimeMessage()

void onRealTimeMessage ( RealTimeMessage message )

protectedinherited

Call the real-time message callback and send the message to the sink pipe.

Definition at line 110 of file MIDI_Interface.cpp.

◆ updateIncoming()

void updateIncoming ( MIDIInterface_t * iface )

staticinherited

Read, parse and dispatch incoming MIDI messages on the given interface.

Definition at line 115 of file MIDI_Interface.hpp.

◆ dispatchIncoming()

void dispatchIncoming	(	MIDIInterface_t *	iface,
		MIDIReadEvent	event )

staticinherited

Dispatch the given type of MIDI message from the given interface.

Definition at line 118 of file MIDI_Interface.hpp.

◆ connectSourcePipe()

void connectSourcePipe ( MIDI_Pipe * source )

inherited

Fully connect a source pipe to this sink.

Definition at line 111 of file MIDI_Pipes.cpp.

◆ disconnectSourcePipes()

void disconnectSourcePipes ( )

inherited

Disconnect all source pipes that sink to this sink (recursively).

Definition at line 113 of file MIDI_Pipes.cpp.

◆ disconnect() [1/4]

bool disconnect ( TrueMIDI_Source & source )

inherited

Disconnect the given source from this sink.

Leaves other sources connected. Returns true if the source was found and disconnected, false if the given source was not a direct or indirect source to this sink.

Definition at line 118 of file MIDI_Pipes.cpp.

◆ disconnect() [2/4]

bool disconnect ( MIDI_Pipe & )

deleteinherited

◆ disconnect() [3/4]

bool disconnect ( TrueMIDI_Sink & sink )

inherited

Disconnect the given sink from this source.

Leaves other sinks connected. Returns true if the sink was found and disconnected, false if the given sink was not a direct or indirect sink of this source.

Definition at line 234 of file MIDI_Pipes.cpp.

◆ disconnect() [4/4]

bool disconnect ( MIDI_Pipe & )

deleteinherited

◆ hasSourcePipe()

bool hasSourcePipe ( ) const

inlineinherited

Check if this sink is connected to a source pipe.

Definition at line 121 of file MIDI_Pipes.hpp.

◆ getSourcePipe()

MIDI_Pipe * getSourcePipe ( ) const

inlineinherited

Get a pointer to the pipe this sink is connected to, or nullptr if not connected.

Definition at line 124 of file MIDI_Pipes.hpp.

◆ stallDownstream()

virtual void stallDownstream	(	MIDIStaller *	,
		MIDI_Source *	)

inlineprivatevirtualinherited

Base case for recursive stall function.

See also: MIDI_Pipe::stallDownstream

Definition at line 131 of file MIDI_Pipes.hpp.

◆ unstallDownstream()

virtual void unstallDownstream	(	MIDIStaller *	,
		MIDI_Source *	)

inlineprivatevirtualinherited

Base case for recursive un-stall function.

See also: MIDI_Pipe::unstallDownstream

Definition at line 134 of file MIDI_Pipes.hpp.

◆ getFinalSink()

virtual MIDI_Sink * getFinalSink ( )

inlineprivatevirtualinherited

Base case for recursive function.

See also: MIDI_Pipe::getFinalSink

Definition at line 137 of file MIDI_Pipes.hpp.

◆ disconnectSourcePipesShallow()

void disconnectSourcePipesShallow ( )

privateinherited

Disconnect only the first pipe connected to this sink.

Leaves the other pipes connected to the original pipe, which doesn't have a sink anymore when this function finishes. Used to disconnect a MIDI_Pipe while preserving the connections of its “through” inputs.

Definition at line 143 of file MIDI_Pipes.cpp.

◆ swap() [1/2]

void swap	(	MIDI_Sink &	a,
		MIDI_Sink &	b )

staticinherited

Definition at line 151 of file MIDI_Pipes.cpp.

◆ swap() [2/2]

void swap	(	MIDI_Source &	a,
		MIDI_Source &	b )

staticinherited

Definition at line 267 of file MIDI_Pipes.cpp.

◆ sourceMIDItoPipe() [1/4]

void sourceMIDItoPipe ( ChannelMessage msg )

inherited

Send a MIDI Channel Message down the pipe.

Definition at line 182 of file MIDI_Pipes.cpp.

◆ sourceMIDItoPipe() [2/4]

void sourceMIDItoPipe ( SysExMessage msg )

inherited

Send a MIDI System Exclusive message down the pipe.

Definition at line 184 of file MIDI_Pipes.cpp.

◆ sourceMIDItoPipe() [3/4]

void sourceMIDItoPipe ( SysCommonMessage msg )

inherited

Send a MIDI System Common message down the pipe.

Definition at line 186 of file MIDI_Pipes.cpp.

◆ sourceMIDItoPipe() [4/4]

void sourceMIDItoPipe ( RealTimeMessage msg )

inherited

Send a MIDI Real-Time message down the pipe.

Definition at line 188 of file MIDI_Pipes.cpp.

◆ stall()

void stall ( MIDIStaller * cause = eternal_stall )

inherited

Stall this MIDI source.

This means that this becomes the only source that can sink to the sinks connected to this source. Other sources have to wait until this source un-stalls the pipe before they can send again.

Parameters

cause Pointer to the reason for this stall, can be called back to un-stall the pipes.

Definition at line 202 of file MIDI_Pipes.cpp.

◆ unstall()

void unstall ( MIDIStaller * cause = eternal_stall )

inherited

Un-stall the pipes connected to this source, so other sources are allowed to send again.

Parameters

cause Pointer to the reason for the stall (this has to be the same one that was used to stall).

Definition at line 208 of file MIDI_Pipes.cpp.

◆ isStalled()

bool isStalled ( ) const

inherited

Check if this source can write to the sinks it connects to.

Definition at line 210 of file MIDI_Pipes.cpp.

◆ getStaller()

MIDIStaller * getStaller ( ) const

inherited

Get a pointer to whatever is causing this MIDI source to be stalled.

There could be multiple stallers, this function just returns one.

Definition at line 213 of file MIDI_Pipes.cpp.

◆ getStallerName()

const char * getStallerName ( ) const

inherited

Get the name of whatever is causing this MIDI source to be stalled.

There could be multiple stallers, this function just returns one.

Definition at line 216 of file MIDI_Pipes.cpp.

◆ handleStallers()

void handleStallers ( ) const

inherited

Give the code that is stalling the MIDI sink pipes the opportunity to do its job and un-stall the pipes.

Definition at line 219 of file MIDI_Pipes.cpp.

◆ connectSinkPipe()

void connectSinkPipe ( MIDI_Pipe * sink )

inherited

Fully connect a sink pipe to this source.

Definition at line 227 of file MIDI_Pipes.cpp.

◆ disconnectSinkPipes()

void disconnectSinkPipes ( )

inherited

Disconnect all sink pipes that this source sinks to (recursively).

Definition at line 229 of file MIDI_Pipes.cpp.

◆ hasSinkPipe()

bool hasSinkPipe ( ) const

inlineinherited

Check if this source is connected to a sink pipe.

Definition at line 237 of file MIDI_Pipes.hpp.

◆ getSinkPipe()

MIDI_Pipe * getSinkPipe ( )

inlineinherited

Get a pointer to the pipe this source is connected to, or nullptr if not connected.

Definition at line 240 of file MIDI_Pipes.hpp.

◆ stallUpstream()

virtual void stallUpstream	(	MIDIStaller *	,
		MIDI_Sink *	)

inlineprivatevirtualinherited

Base case for recursive stall function.

See also: MIDI_Pipe::stallUpstream

Definition at line 247 of file MIDI_Pipes.hpp.

◆ unstallUpstream()

virtual void unstallUpstream	(	MIDIStaller *	,
		MIDI_Sink *	)

inlineprivatevirtualinherited

Base case for recursive un-stall function.

See also: MIDI_Pipe::unstallUpstream

Definition at line 250 of file MIDI_Pipes.hpp.

◆ getInitialSource()

virtual MIDI_Source * getInitialSource ( )

inlineprivatevirtualinherited

Base case for recursive function.

See also: MIDI_Pipe::getInitialSource

Definition at line 253 of file MIDI_Pipes.hpp.

◆ disconnectSinkPipesShallow()

void disconnectSinkPipesShallow ( )

privateinherited

Disconnect only the first pipe connected to this source.

Leaves the other pipes connected to the original pipe, which doesn't have a source anymore when this function finishes. Used to disconnect a MIDI_Pipe while preserving the connections of its “through” outputs.

Definition at line 259 of file MIDI_Pipes.cpp.

◆ send()

void send ( ChannelMessage message )

inherited

Send a MIDI Channel Voice message.

◆ sendChannelMessage()

void sendChannelMessage	(	MIDIMessageType	m,
		Channel	c,
		uint8_t	d1,
		uint8_t	d2,
		Cable	cable = Cable_1 )

inherited

Send a 3-byte MIDI Channel Voice message.

Parameters

m	MIDI message type. [0x80, 0xE0]
c	The MIDI channel. [1, 16]
d1	The first data byte. [0, 127]
d2	The second data byte. [0, 127]
cable	The MIDI Cable Number. [Cable_1, Cable_16]

◆ sendNoteOn()

void sendNoteOn	(	MIDIAddress	address,
		uint8_t	velocity )

inherited

Send a MIDI Note On event.

◆ sendNoteOff()

void sendNoteOff	(	MIDIAddress	address,
		uint8_t	velocity )

inherited

Send a MIDI Note Off event.

◆ sendKeyPressure()

void sendKeyPressure	(	MIDIAddress	address,
		uint8_t	pressure )

inherited

Send a MIDI Key Pressure event.

◆ sendControlChange()

void sendControlChange	(	MIDIAddress	address,
		uint8_t	value )

inherited

Send a MIDI Control Change event.

◆ sendProgramChange()

void sendProgramChange ( MIDIAddress address )

inherited

Send a MIDI Program Change event.

◆ sendChannelPressure()

void sendChannelPressure	(	MIDIChannelCable	address,
		uint8_t	pressure )

inherited

Send a MIDI Channel Pressure event.

◆ sendPitchBend()

void sendPitchBend	(	MIDIChannelCable	address,
		uint16_t	value )

inherited

Send a MIDI Pitch Bend event.

◆ sendSysCommon()

void sendSysCommon	(	MIDIMessageType	m,
		Cable	cable = Cable_1 )

inherited

Send a MIDI System Common message.

◆ sendMTCQuarterFrame()

void sendMTCQuarterFrame	(	uint8_t	data,
		Cable	cable = Cable_1 )

inherited

Send a MIDI Time Code Quarter Frame.

◆ sendSongPositionPointer()

void sendSongPositionPointer	(	uint16_t	spp,
		Cable	cable = Cable_1 )

inherited

Send a MIDI Song Position Pointer message.

◆ sendSongSelect()

void sendSongSelect	(	uint8_t	song,
		Cable	cable = Cable_1 )

inherited

Send a MIDI Song Select message.

◆ sendTuneRequest()

void sendTuneRequest ( Cable cable = Cable_1 )

inherited

Send a MIDI Tune Request.

◆ sendSysEx()

void sendSysEx	(	const uint8_t(&)	sysexdata[N],
		Cable	cable = Cable_1 )

inherited

Send a MIDI System Exclusive message.

◆ sendRealTime()

void sendRealTime	(	MIDIMessageType	rt,
		Cable	cable = Cable_1 )

inherited

Send a MIDI Real-Time message.

◆ sendTimingClock()

void sendTimingClock ( Cable cable = Cable_1 )

inherited

Send a MIDI Timing Clock message.

◆ sendStart()

void sendStart ( Cable cable = Cable_1 )

inherited

Send a MIDI Start message.

◆ sendContinue()

void sendContinue ( Cable cable = Cable_1 )

inherited

Send a MIDI Continue message.

◆ sendStop()

void sendStop ( Cable cable = Cable_1 )

inherited

Send a MIDI Stop message.

◆ sendActiveSensing()

void sendActiveSensing ( Cable cable = Cable_1 )

inherited

Send a MIDI Active Sensing message.

◆ sendSystemReset()

void sendSystemReset ( Cable cable = Cable_1 )

inherited

Send a MIDI System Reset message.

◆ sendNow()

void sendNow ( )

inherited

Causes all buffered messages to be sent immediately.

Note: Doesn't necessarily wait until all data has been sent, it just triggers the transmission, so everything will be transmitted as soon as possible.

◆ sendKP()

void sendKP	(	MIDIAddress	address,
		uint8_t	pressure )

inherited

Send a MIDI Key Pressure event.

◆ sendCC()

void sendCC	(	MIDIAddress	address,
		uint8_t	value )

inherited

Send a MIDI Control Change event.

◆ sendPC()

void sendPC ( MIDIAddress address )

inherited

Send a MIDI Program Change event.

◆ sendCP()

void sendCP	(	MIDIChannelCable	address,
		uint8_t	pressure )

inherited

Send a MIDI Channel Pressure event.

◆ sendPB()

void sendPB	(	MIDIChannelCable	address,
		uint16_t	value )

inherited

Send a MIDI Pitch Bend event.

◆ beginAll()

void beginAll ( )

inlinestaticinherited

Begin all enabled instances of this class.

See also: begin()

Definition at line 182 of file Updatable.hpp.

◆ updateAll()

void updateAll ( )

inlinestaticinherited

Update all enabled instances of this class.

See also: update()

Definition at line 186 of file Updatable.hpp.

◆ enable()

void enable ( )

inlineinherited

Enable this updatable: insert it into the linked list of instances, so it gets updated automatically.

Definition at line 96 of file Updatable.hpp.

◆ disable()

void disable ( )

inlineinherited

Disable this updatable: remove it from the linked list of instances, so it no longer gets updated automatically.

Definition at line 106 of file Updatable.hpp.

◆ isEnabled()

bool isEnabled ( ) const

inlineinherited

Check if this updatable is enabled.

Note: Assumes that the updatable is not added to a different linked list by the user.

Definition at line 120 of file Updatable.hpp.

◆ moveDown()

void moveDown ( )

inlineinherited

Move down this element in the list.

Definition at line 147 of file Updatable.hpp.

◆ getNameNull()

const char * getNameNull ( MIDIStaller * s )

staticinherited

Get the staller's name for debugging purposes.

Correctly deals with null pointers or eternal stallers.

Definition at line 22 of file MIDI_Pipes.cpp.

Member Data Documentation

◆ backend

USBHostMIDIBackend< 64 > backend

inherited

The (platform-specific) backend used for MIDI over USB communication.

Definition at line 87 of file USBMIDI_Interface.hpp.

◆ parser

USBMIDI_Parser parser

privateinherited

Parses USB packets into MIDI messages.

Definition at line 103 of file USBMIDI_Interface.hpp.

◆ sender

USBMIDI_Sender sender

privateinherited

Sends USB MIDI messages.

Definition at line 105 of file USBMIDI_Interface.hpp.

◆ alwaysSendImmediately_

bool alwaysSendImmediately_

privateinherited

See also: neverSendImmediately()

Definition at line 107 of file USBMIDI_Interface.hpp.

◆ callbacks

MIDI_Callbacks* callbacks

privateinherited

Definition at line 129 of file MIDI_Interface.hpp.

◆ DefaultMIDI_Interface

MIDI_Interface * DefaultMIDI_Interface

staticprivateinherited

Definition at line 132 of file MIDI_Interface.hpp.

◆ sourcePipe

MIDI_Pipe* sourcePipe

protectedinherited

Definition at line 146 of file MIDI_Pipes.hpp.

◆ sinkPipe

MIDI_Pipe* sinkPipe

protectedinherited

Definition at line 262 of file MIDI_Pipes.hpp.

◆ updatables

DoublyLinkedList<Updatable< MIDI_Interface >> updatables

staticprotectedinherited

Definition at line 152 of file Updatable.hpp.

◆ next

Updatable< MIDI_Interface >* next

protectedinherited

Definition at line 320 of file LinkedList.hpp.

◆ previous

Updatable< MIDI_Interface >* previous

protectedinherited

Definition at line 321 of file LinkedList.hpp.

The documentation for this class was generated from the following file:

USBHostMIDI_Interface.hpp

Detailed Description

Initialization and polling

Reading incoming MIDI messages

Buffering USB packets

Default MIDI Interfaces

MIDI Input Callbacks

Connecting and disconnecting MIDI Pipes

Connecting and disconnecting MIDI Pipes

Sending data over a MIDI Pipe

Stalling the sink pipes and exclusive access

Sending MIDI Channel Voice messages

Sending MIDI System Common messages

Sending MIDI System Exclusive messages

Sending MIDI Real-Time messages

Flushing the MIDI send buffer

Deprecated

Enabling and disabling updatables

Underlying USB communication

Main initialization and updating methods

Public Member Functions

Static Public Member Functions

Protected Member Functions

Protected Attributes

Static Protected Attributes

Private Member Functions

Private Attributes

Static Private Attributes

Constructor & Destructor Documentation

◆ USBHostMIDI_Interface()

Member Function Documentation

◆ sendChannelMessageImpl()

◆ sendSysCommonImpl()

◆ sendSysExImpl()

◆ sendRealTimeImpl()

◆ sendNowImpl()

◆ handleStall() [1/2]

◆ handleStall() [2/2]

◆ getName()

◆ begin()

◆ update()

◆ read()

◆ getChannelMessage()

◆ getSysCommonMessage()

◆ getRealTimeMessage()

◆ getSysExMessage()

◆ alwaysSendsImmediately()

◆ neverSendImmediately()

◆ alwaysSendImmediately()

◆ setAsDefault()

◆ getDefault()

◆ setCallbacks() [1/2]

◆ setCallbacks() [2/2]

◆ sinkMIDIfromPipe() [1/4]

◆ sinkMIDIfromPipe() [2/4]

◆ sinkMIDIfromPipe() [3/4]

◆ sinkMIDIfromPipe() [4/4]

◆ onChannelMessage()

◆ onSysExMessage()

◆ onSysCommonMessage()

◆ onRealTimeMessage()

◆ updateIncoming()

◆ dispatchIncoming()

◆ connectSourcePipe()

◆ disconnectSourcePipes()

◆ disconnect() [1/4]

◆ disconnect() [2/4]

◆ disconnect() [3/4]

◆ disconnect() [4/4]

◆ hasSourcePipe()

◆ getSourcePipe()

◆ stallDownstream()

◆ unstallDownstream()

◆ getFinalSink()

◆ disconnectSourcePipesShallow()

◆ swap() [1/2]

◆ swap() [2/2]

◆ sourceMIDItoPipe() [1/4]

◆ sourceMIDItoPipe() [2/4]

◆ sourceMIDItoPipe() [3/4]

◆ sourceMIDItoPipe() [4/4]