class AlsaOut

Sends MIDI events to a MIDI devices using ALSA. More...

List of all Methods
Definition	`#include <alsaout.h>`
Inherits	MidiOut

Annotated List

Files

Globals

Hierarchy

Index

Public Methods

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 a )
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 ()
virtual void sync (int i=0)

Public Members

Forward AlsaOutPrivate
AlsaOutPrivate *di

Protected Methods

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 Members

int ndevs
int nmidiports
double count
double lastcount
double lasttime
double begintime
int m_rate
double convertrate
long int time

Detailed Description

int ndevs

[protected]

Total number of devices.

int nmidiports

[protected]

Total number of midi ports

double count

[protected]

double lastcount

[protected]

double lasttime

[protected]

double begintime

[protected]

int m_rate

[protected]

double convertrate

[protected]

A "constant" used to convert from milliseconds to the computer rate

long int time

[protected]

void seqbuf_dump (void)

[protected virtual]

Reimplemented from MidiOut.

void seqbuf_clean (void)

[protected virtual]

Reimplemented from MidiOut.

void eventInit (snd_seq_event_t *ev)

[protected]

void eventSend (snd_seq_event_t *ep)

[protected]

void timerEventSend (int type)

[protected]

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() ),

~ 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.

void 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.

void closeDev ()

[virtual]

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

Reimplemented from MidiOut.

void initDev ()

[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.

int deviceType ()

[const]

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

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 :

Reimplemented from MidiOut.

const char * deviceName (void)

[const virtual]

Returns the name and type of this MIDI device.

Reimplemented from MidiOut.

int rate (void)

Reimplemented from MidiOut.

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

[virtual]

See DeviceManager::noteOn()

Reimplemented from MidiOut.

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

[virtual]

See DeviceManager::noteOff()

Reimplemented from MidiOut.

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

[virtual]

See DeviceManager::keyPressure()

Reimplemented from MidiOut.

void chnPatchChange ( uchar chn, uchar patch )

[virtual]

See DeviceManager::chnPatchChange()

Reimplemented from MidiOut.

void chnPressure ( uchar chn, uchar vel )

[virtual]

See DeviceManager::chnPressure()

Reimplemented from MidiOut.

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

[virtual]

See DeviceManager::chnPitchBender()

Reimplemented from MidiOut.

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

[virtual]

See DeviceManager::chnController()

Reimplemented from MidiOut.

void sysex ( uchar *data,ulong size)

[virtual]

See DeviceManager::sysex()

Reimplemented from MidiOut.

void channelSilence ( uchar chn )

[virtual]

Mutes all notes being played on a given channel.

Reimplemented from MidiOut.

void channelMute ( uchar chn, int a )

[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.

void setVolumePercentage ( int volper )

[virtual]

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.

int ok (void)

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

Reimplemented from MidiOut.

void wait (double ticks)

[virtual]

Reimplemented from MidiOut.

void tmrSetTempo (int v)

[virtual]

Reimplemented from MidiOut.

void tmrStart (int tpcn)

[virtual]

Reimplemented from MidiOut.

void tmrStart ()

[virtual]

Reimplemented from MidiOut.

void tmrStop ()

[virtual]

Reimplemented from MidiOut.

void tmrContinue ()

[virtual]

Reimplemented from MidiOut.

void sync (int i=0)

[virtual]

If i==1 syncronizes by cleaning the buffer instead of sending it (in fact, this is what syncronizing really means :-) )

Reimplemented from MidiOut.

AlsaOutPrivate * di

Version: 0.9.5 17/01/2000
Author: Antonio Larrosa Jimenez <larrosa@kde.org>
Generated: prospector@porky.devel.redhat.com on Thu Aug 24 05:36:32 2000, using kdoc 2.0a36.

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.