class AlsaOut

 Sends MIDI events to a MIDI devices using ALSA. More...
Definition#include <alsaout.h>
InheritsMidiOut [public ]
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Detailed Description

int ndevs

[ protected: ]

int nmidiports

[ protected: ]

double count

[ protected: ]

double lastcount

[ protected: ]

double lasttime

[ protected: ]

double begintime

[ protected: ]

int m_rate

[ protected: ]

double convertrate

[ protected: ]

long int time

[ protected: ]

void  seqbuf_dump (void)

[ protected: virtual]

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

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:
sqfda 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.

See also: openDev

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]

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 :

See also: deviceName

Reimplemented from MidiOut.

const char *  deviceName (void)

[const virtual]

Returns the name and type of this MIDI device.

See also: deviceType

Reimplemented from MidiOut.

int  rate (void)

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:
chnchannel to work on
bif 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:
volperis 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]

void  tmrSetTempo (int v)

[virtual]

void  tmrStart (int tpcn)

[virtual]

void  tmrStart ()

[virtual]

void  tmrStop ()

[virtual]

void  tmrContinue ()

[virtual]

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 :-) )

AlsaOutPrivate * di