AlsaOut Class Reference

#include <alsaout.h>

Inheritance diagram for AlsaOut:

Public Member Functions
	AlsaOut (int d, int client=64, int port=0, const char *cname="", const char *pname="")
virtual	~AlsaOut ()
virtual void	openDev (int sqfd)
virtual void	closeDev ()
virtual void	initDev ()
int	deviceType () const
virtual const char *	deviceName (void) const
int	rate (void)
virtual void	noteOn (uchar chn, uchar note, uchar vel)
virtual void	noteOff (uchar chn, uchar note, uchar vel)
virtual void	keyPressure (uchar chn, uchar note, uchar vel)
virtual void	chnPatchChange (uchar chn, uchar patch)
virtual void	chnPressure (uchar chn, uchar vel)
virtual void	chnPitchBender (uchar chn, uchar lsb, uchar msb)
virtual void	chnController (uchar chn, uchar ctl, uchar v)
virtual void	sysex (uchar *data, ulong size)
virtual void	channelSilence (uchar chn)
virtual void	channelMute (uchar chn, int b)
virtual void	setVolumePercentage (int volper)
int	ok (void)
virtual void	wait (double ticks)
virtual void	tmrSetTempo (int v)
virtual void	tmrStart (int tpcn)
virtual void	tmrStart ()
virtual void	tmrStop ()
virtual void	tmrContinue ()
void	sync (int i=0)
Public Member Functions inherited from MidiOut
	MidiOut (int d=0)
virtual	~MidiOut ()
virtual void	openDev (int sqfd)
virtual void	closeDev ()
virtual void	initDev ()
int	deviceType () const
const char *	deviceName (void) const
void	setMidiMapper (MidiMapper *map)
virtual void	noteOn (uchar chn, uchar note, uchar vel)
virtual void	noteOff (uchar chn, uchar note, uchar vel)
virtual void	keyPressure (uchar chn, uchar note, uchar vel)
virtual void	chnPatchChange (uchar chn, uchar patch)
virtual void	chnPressure (uchar chn, uchar vel)
virtual void	chnPitchBender (uchar chn, uchar lsb, uchar msb)
virtual void	chnController (uchar chn, uchar ctl, uchar v)
virtual void	sysex (uchar *data, ulong size)
void	allNotesOff (void)
virtual void	channelSilence (uchar chn)
virtual void	channelMute (uchar chn, int b)
virtual void	setVolumePercentage (int volper)
int	ok (void)
const char *	midiMapFilename ()
void	sync (int i=0)

Public Attributes
AlsaOutPrivate *	di

Protected Member Functions
virtual void	seqbuf_dump (void)
virtual void	seqbuf_clean (void)
void	eventInit (snd_seq_event_t *ev)
void	eventSend (snd_seq_event_t *ep)
void	timerEventSend (int type)
Protected Member Functions inherited from MidiOut
void	seqbuf_dump (void)
void	seqbuf_clean (void)

Protected Attributes
int	ndevs
int	nmidiports
double	count
double	lastcount
double	lasttime
double	begintime
int	m_rate
double	convertrate
long int	time
Protected Attributes inherited from MidiOut
int	seqfd
int	device
int	devicetype
int	volumepercentage
MidiMapper *	map
uchar	chnpatch [16]
int	chnbender [16]
uchar	chnpressure [16]
uchar	chncontroller [16][256]
int	chnmute [16]
int	_ok

Friends
class	DeviceManager

Detailed Description

Sends MIDI events to a MIDI devices using ALSA.

Version

0.9.5 17/01/2000

Author

Antonio Larrosa Jimenez larro.nosp@m.sa@k.nosp@m.de.or.nosp@m.g

Definition at line 37 of file alsaout.h.

Constructor & Destructor Documentation

AlsaOut()

AlsaOut::AlsaOut	(	int	d,
		int	client = 64,
		int	port = 0,
		const char *	cname = "",
		const char *	pname = ""
	)

Constructor.

After constructing a MidiOut device, you must open it (using openDev() ). Additionally you may want to initialize it (with initDev() ),

Definition at line 111 of file alsaout.cpp.

~AlsaOut()

AlsaOut::~AlsaOut ( )

virtual

Destructor.

It doesn't matter if you close the device ( closeDev() ) before you destruct the object because in other case, it will be closed here.

Definition at line 126 of file alsaout.cpp.

Member Function Documentation

channelMute()

void AlsaOut::channelMute ( uchar  chn, int  b  )

virtual

Mute or "unmute" a given channel .

Parameters

chn	channel to work on
b	if true, the device will ignore subsequent notes played on the chn channel, and mute all notes being played on it. If b is false, the channel is back to work.

Reimplemented from MidiOut.

Definition at line 441 of file alsaout.cpp.

channelSilence()

void AlsaOut::channelSilence ( uchar  chn )

virtual

Mutes all notes being played on a given channel.

Reimplemented from MidiOut.

Definition at line 427 of file alsaout.cpp.

chnController()

void AlsaOut::chnController ( uchar  chn, uchar  ctl, uchar  v  )

virtual

See DeviceManager::chnController()

Reimplemented from MidiOut.

Definition at line 390 of file alsaout.cpp.

chnPatchChange()

void AlsaOut::chnPatchChange ( uchar  chn, uchar  patch  )

virtual

See DeviceManager::chnPatchChange()

Reimplemented from MidiOut.

Definition at line 343 of file alsaout.cpp.

chnPitchBender()

void AlsaOut::chnPitchBender ( uchar  chn, uchar  lsb, uchar  msb  )

virtual

See DeviceManager::chnPitchBender()

Reimplemented from MidiOut.

Definition at line 374 of file alsaout.cpp.

chnPressure()

void AlsaOut::chnPressure ( uchar  chn, uchar  vel  )

virtual

See DeviceManager::chnPressure()

Reimplemented from MidiOut.

Definition at line 360 of file alsaout.cpp.

closeDev()

void AlsaOut::closeDev ( void  )

virtual

Closes the device.

It basically tells the device (the file descriptor) is going to be closed.

See also

openDev

Reimplemented from MidiOut.

Definition at line 181 of file alsaout.cpp.

deviceName()

const char * AlsaOut::deviceName ( void  ) const

virtual

Returns the name and type of this MIDI device.

See also

deviceType

Definition at line 564 of file alsaout.cpp.

deviceType()

int AlsaOut::deviceType ( ) const

inline

Returns

the device type of the object. This is to identify the inherited class that a given object is polymorphed to. The returned value is one of these :

• KMID_EXTERNAL_MIDI if it's a MidiOut object
• KMID_SYNTH if it's a SynthOut object (as an AWE device)
• KMID_FM if it's a FMOut object
• KMID_GUS if it's a GUSOut object

which are defined in midispec.h

See also

deviceName

Definition at line 129 of file alsaout.h.

initDev()

void AlsaOut::initDev ( void  )

virtual

Initializes the device sending generic standard midi events and controllers, such as changing the patches of each channel to an Acoustic Piano (000), setting the volume to a normal value, etc.

Reimplemented from MidiOut.

Definition at line 209 of file alsaout.cpp.

keyPressure()

void AlsaOut::keyPressure ( uchar  chn, uchar  note, uchar  vel  )

virtual

See DeviceManager::keyPressure()

Reimplemented from MidiOut.

Definition at line 331 of file alsaout.cpp.

noteOff()

void AlsaOut::noteOff ( uchar  chn, uchar  note, uchar  vel  )

virtual

See DeviceManager::noteOff()

Reimplemented from MidiOut.

Definition at line 316 of file alsaout.cpp.

noteOn()

void AlsaOut::noteOn ( uchar  chn, uchar  note, uchar  vel  )

virtual

See DeviceManager::noteOn()

Reimplemented from MidiOut.

Definition at line 294 of file alsaout.cpp.

ok()

int AlsaOut::ok ( void  )

inline

Returns true if everything's ok and false if there has been any problem.

Definition at line 209 of file alsaout.h.

openDev()

void AlsaOut::openDev ( int  sqfd )

virtual

Opens the device.

This is generally called from DeviceManager , so you shouldn't call this yourself (except if you created the MidiOut object yourself.

Parameters

sqfd	a file descriptor of /dev/sequencer

See also

closeDev

initDev

Reimplemented from MidiOut.

Definition at line 132 of file alsaout.cpp.

rate()

int AlsaOut::rate ( void  )

inline

Definition at line 140 of file alsaout.h.

seqbuf_clean()

void AlsaOut::seqbuf_clean ( void  )

protectedvirtual

Definition at line 464 of file alsaout.cpp.

seqbuf_dump()

void AlsaOut::seqbuf_dump ( void  )

protectedvirtual

Definition at line 459 of file alsaout.cpp.

setVolumePercentage()

virtual void AlsaOut::setVolumePercentage ( int  volper )

inlinevirtual

Change all channel volume events multiplying it by this percentage correction Instead of forcing a channel to a fixed volume, this method allows to music to fade out even when it was being played softly.

Parameters

volper

is an integer value, where 0 is quiet, 100 is used to send an unmodified value, 200 play music twice louder than it should, etc.

Reimplemented from MidiOut.

Definition at line 203 of file alsaout.h.

sync()

void AlsaOut::sync

(

int

i = 0

)

Definition at line 500 of file alsaout.cpp.

sysex()

void AlsaOut::sysex ( uchar *  data, ulong  size  )

virtual

See DeviceManager::sysex()

Reimplemented from MidiOut.

Definition at line 411 of file alsaout.cpp.

tmrContinue()

void AlsaOut::tmrContinue ( void  )

virtual

Definition at line 560 of file alsaout.cpp.

tmrSetTempo()

void AlsaOut::tmrSetTempo ( int  v )

virtual

Definition at line 480 of file alsaout.cpp.

tmrStart() [1/2]

virtual void AlsaOut::tmrStart ( )

inlinevirtual

Definition at line 217 of file alsaout.h.

tmrStart() [2/2]

void AlsaOut::tmrStart ( int  tpcn )

virtual

Definition at line 523 of file alsaout.cpp.

tmrStop()

void AlsaOut::tmrStop ( void  )

virtual

Definition at line 552 of file alsaout.cpp.

wait()

void AlsaOut::wait ( double  ticks )

virtual

Definition at line 469 of file alsaout.cpp.

Friends And Related Function Documentation

DeviceManager

friend class DeviceManager

friend

Definition at line 39 of file alsaout.h.

Member Data Documentation

begintime

double AlsaOut::begintime

protected

Definition at line 58 of file alsaout.h.

convertrate

double AlsaOut::convertrate

protected

Definition at line 65 of file alsaout.h.

count

double AlsaOut::count

protected

Definition at line 55 of file alsaout.h.

di

AlsaOutPrivate* AlsaOut::di

Definition at line 228 of file alsaout.h.

lastcount

double AlsaOut::lastcount

protected

Definition at line 56 of file alsaout.h.

lasttime

double AlsaOut::lasttime

protected

Definition at line 57 of file alsaout.h.

m_rate

int AlsaOut::m_rate

protected

Definition at line 59 of file alsaout.h.

ndevs

int AlsaOut::ndevs

protected

Definition at line 47 of file alsaout.h.

nmidiports

int AlsaOut::nmidiports

protected

Definition at line 53 of file alsaout.h.

time

long int AlsaOut::time

protected

Definition at line 67 of file alsaout.h.

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

• alsaout.h
• alsaout.cpp