AlsaOut Class Reference
#include <alsaout.h>
Inheritance diagram for AlsaOut:

Detailed Description
Sends MIDI events to a MIDI devices using ALSA.
- Version:
- 0.9.5 17/01/2000
Definition at line 37 of file alsaout.h.
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 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 Attributes | |
| int | ndevs |
| int | nmidiports |
| double | count |
| double | lastcount |
| double | lasttime |
| double | begintime |
| int | m_rate |
| double | convertrate |
| long int | time |
Friends | |
| class | DeviceManager |
Constructor & Destructor Documentation
| 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.cc.
| 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.cc.
Member Function Documentation
| 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
Reimplemented from MidiOut.
Definition at line 132 of file alsaout.cc.
| void AlsaOut::closeDev | ( | ) | [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.cc.
| void AlsaOut::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.
Definition at line 209 of file alsaout.cc.
| 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
- See also:
- deviceName
Reimplemented from MidiOut.
| const char * AlsaOut::deviceName | ( | void | ) | const [virtual] |
Returns the name and type of this MIDI device.
- See also:
- deviceType
Reimplemented from MidiOut.
Definition at line 564 of file alsaout.cc.
| void AlsaOut::noteOn | ( | uchar | chn, | |
| uchar | note, | |||
| uchar | vel | |||
| ) | [virtual] |
| void AlsaOut::noteOff | ( | uchar | chn, | |
| uchar | note, | |||
| uchar | vel | |||
| ) | [virtual] |
| void AlsaOut::keyPressure | ( | uchar | chn, | |
| uchar | note, | |||
| uchar | vel | |||
| ) | [virtual] |
See DeviceManager::keyPressure().
Reimplemented from MidiOut.
Definition at line 331 of file alsaout.cc.
| void AlsaOut::chnPatchChange | ( | uchar | chn, | |
| uchar | patch | |||
| ) | [virtual] |
See DeviceManager::chnPatchChange().
Reimplemented from MidiOut.
Definition at line 343 of file alsaout.cc.
| void AlsaOut::chnPressure | ( | uchar | chn, | |
| uchar | vel | |||
| ) | [virtual] |
See DeviceManager::chnPressure().
Reimplemented from MidiOut.
Definition at line 360 of file alsaout.cc.
| void AlsaOut::chnPitchBender | ( | uchar | chn, | |
| uchar | lsb, | |||
| uchar | msb | |||
| ) | [virtual] |
See DeviceManager::chnPitchBender().
Reimplemented from MidiOut.
Definition at line 374 of file alsaout.cc.
| void AlsaOut::chnController | ( | uchar | chn, | |
| uchar | ctl, | |||
| uchar | v | |||
| ) | [virtual] |
See DeviceManager::chnController().
Reimplemented from MidiOut.
Definition at line 390 of file alsaout.cc.
| void AlsaOut::sysex | ( | uchar * | data, | |
| ulong | size | |||
| ) | [virtual] |
| 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.cc.
| 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.cc.
| virtual void AlsaOut::setVolumePercentage | ( | int | volper | ) | [inline, 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 AlsaOut::ok | ( | void | ) | [inline] |
| void AlsaOut::sync | ( | int | i = 0 |
) |
Sends the buffer to the device and returns when it's played, so you can synchronize XXX: sync should be virtual after next bic release.
Reimplemented from MidiOut.
Definition at line 500 of file alsaout.cc.
The documentation for this class was generated from the following files:

