DeviceManager Class Reference
MIDI Device Manager class . Manages all MIDI devices and redirects MIDI events to each one as configured. More...
#include <deviceman.h>
Public Member Functions | |
DeviceManager (int def=-1) | |
~DeviceManager (void) | |
int | initManager (void) |
int | checkInit (void) |
MidiOut * | chntodev (int chn) |
MidiOut * | deviceForChannel (int chn) |
int | deviceNumberForChannel (int chn) |
void | setDeviceNumberForChannel (int chn, int dev) |
int | ok (void) |
int | usingAlsa (void) |
void | openDev (void) |
void | closeDev (void) |
void | initDev (void) |
void | noteOn (uchar chn, uchar note, uchar vel) |
void | noteOff (uchar chn, uchar note, uchar vel) |
void | keyPressure (uchar chn, uchar note, uchar vel) |
void | chnPatchChange (uchar chn, uchar patch) |
void | chnPressure (uchar chn, uchar vel) |
void | chnPitchBender (uchar chn, uchar lsb, uchar msb) |
void | chnController (uchar chn, uchar ctl, uchar v) |
void | sysEx (uchar *data, ulong size) |
void | wait (double ms) |
void | tmrSetTempo (int v) |
void | tmrStart (long int tpcn) |
void | tmrStop (void) |
void | tmrContinue (void) |
void | allNotesOff (void) |
void | sync (bool f=0) |
void | setVolumePercentage (int i) |
int | defaultDevice (void) |
void | setDefaultDevice (int i) |
int | setPatchesToUse (int *patchesused) |
const char * | midiMapFilename (void) |
void | setMidiMap (MidiMapper *map) |
int | rate (void) |
int | midiPorts (void) |
int | synthDevices (void) |
const char * | name (int i) |
const char * | type (int i) |
Protected Member Functions | |
void | seqbuf_dump (void) |
void | seqbuf_clean (void) |
void | checkAlsa (void) |
Protected Attributes | |
MidiOut ** | device |
midi_info * | midiinfo |
synth_info * | synthinfo |
int | chn2dev [16] |
int | n_synths |
int | n_midi |
int | n_total |
int | m_rate |
double | convertrate |
int | timerstarted |
double | lastwaittime |
MidiMapper * | mapper_tmp |
int | initialized |
int | seqfd |
int | default_dev |
int | _ok |
bool | alsa |
Detailed Description
MIDI Device Manager class . Manages all MIDI devices and redirects MIDI events to each one as configured.This class is the one you should use to send MIDI events to any device, as it creates and manages the *Out classes.
This class is usually used by creating a DeviceManager object, then call openDev() and initDev() . Then, use numberOfMidiPorts(), numberOfSynthDevices(), name() and type() to choose which device to play MIDI events to and then use defaultDevice() to set the MIDI device to play.
- Version:
- 0.9.5 17/01/2000
- Author:
- Antonio Larrosa Jimenez <larrosa@kde.org>
Definition at line 46 of file deviceman.h.
Constructor & Destructor Documentation
|
Constructor. It just initializes internal variables, before playing any music, you should call initManager(), setMidiMap() (optional), openDev(), initDev(), setPatchesToUse() (not required, unless you're playing to a GUS device, which must load the patches), tmrStart(), and finally, play the music. Definition at line 106 of file deviceman.cc. References KConfigBase::readBoolEntry(), KConfigBase::readNumEntry(), KConfigBase::readPathEntry(), and KConfigBase::setGroup(). |
|
Destructor. It closes the device (calling closeDev() ) if it wasn't closed before. Definition at line 153 of file deviceman.cc. References closeDev(). |
Member Function Documentation
|
Initializes the MIDI Device Manager object. The /dev/sequencer and/or /dev/snd/seq files are opened, available devices are analyzed and *Out objects are created. Then, the device files are closed.
Definition at line 203 of file deviceman.cc. References MidiOut::device, name(), and setMidiMap(). Referenced by checkInit(). |
|
Checks if the device manager has been initialized (with
Definition at line 176 of file deviceman.cc. References initManager(). Referenced by name(), openDev(), setPatchesToUse(), and type(). |
|
Definition at line 205 of file deviceman.h. Referenced by chnController(), chnPatchChange(), chnPitchBender(), chnPressure(), keyPressure(), noteOff(), and noteOn(). |
|
It's possible to send different MIDI channels to different MIDI devices, so that you can for example send channel 1 to an external synthesizer, channel 2 to a FM device and channel 10 to an AWE synth.
Definition at line 216 of file deviceman.h. |
|
Returns the device number associated with a given channel.
Definition at line 222 of file deviceman.h. |
|
Sets the device number associated with a given channel.
Definition at line 821 of file deviceman.cc. |
|
Definition at line 169 of file deviceman.cc. Referenced by MidiPlayer::play(). |
|
Returns true if it's running ALSA and false if OSS is being run.
Definition at line 238 of file deviceman.h. |
|
Open the devices. It first initializes the manager it that wasn't done yet (you should do it yourself, to be able to choose the MIDI output device, as it will be set to an external synth by default, if available). Then /dev/sequencer is opened and the MIDI devices are opened (calling MidiOut::openDev() ).
Definition at line 398 of file deviceman.cc. References checkInit(), MidiOut::closeDev(), MidiOut::ok(), and MidiOut::openDev(). Referenced by MidiPlayer::play(). |
|
Closes the devices, and /dev/sequencer.
Definition at line 449 of file deviceman.cc. References MidiOut::closeDev(), and tmrStop(). Referenced by MidiPlayer::play(), and ~DeviceManager(). |
|
Calls MidiOut::initDev() in turn in each of the available devices.
Definition at line 482 of file deviceman.cc. References MidiOut::initDev(). Referenced by MidiPlayer::play(). |
|
Sends a Note On MIDI event.
Definition at line 496 of file deviceman.cc. References chntodev(), and MidiOut::noteOn(). Referenced by MidiPlayer::play(). |
|
Sends a Note Off MIDI event. This is equivalent to send a Note On event with a vel value of 0.
Definition at line 501 of file deviceman.cc. References chntodev(), and MidiOut::noteOff(). Referenced by MidiPlayer::play(). |
|
Sends a Key Pressure (or Aftertouch) MIDI event. This event changes the pressure over a key after this key has been played.
Definition at line 506 of file deviceman.cc. References chntodev(), and MidiOut::keyPressure(). Referenced by MidiPlayer::play(). |
|
Changes the patch (instrument) on a MIDI channel.
Definition at line 511 of file deviceman.cc. References MidiOut::chnPatchChange(), and chntodev(). Referenced by MidiPlayer::play(), and MidiStatus::sendData(). |
|
Changes the Pressure (Aftertouch) on a MIDI channel. Keep in mind that some synthesizers don't like this events, and it's better not to send it.
Definition at line 516 of file deviceman.cc. References MidiOut::chnPressure(), and chntodev(). Referenced by MidiPlayer::play(), and MidiStatus::sendData(). |
|
Changes the Pitch Bender value on a MIDI channel. This bends the tone of each note played on this channel.
Definition at line 521 of file deviceman.cc. References MidiOut::chnPitchBender(), and chntodev(). Referenced by MidiPlayer::play(), and MidiStatus::sendData(). |
|
Sends a Controller event to a MIDI channel. This can be used for example to change the volume, set a XG patch, etc. Look for any General Midi resource page on the net for more information about the available controller events.
For example, to set the tremolo value to a maximum on the MIDI channel number one, you should pass 1 to
Definition at line 526 of file deviceman.cc. References MidiOut::chnController(), and chntodev(). Referenced by MidiPlayer::play(), and MidiStatus::sendData(). |
|
Sends a SYStem EXclusive message to the default MIDI device (usually, external MIDI synths, as most internal synths do not support sysex messages).
Definition at line 531 of file deviceman.cc. References MidiOut::sysex(). |
|
Sets the number of milliseconds at which the next event will be sent. This way, you can schedule notes and events to send to the MIDI device.
Definition at line 537 of file deviceman.cc. Referenced by MidiPlayer::play(). |
|
Sets the tempo which will be used to convert between ticks and milliseconds.
Definition at line 553 of file deviceman.cc. Referenced by MidiPlayer::play(), and MidiStatus::sendData(). |
|
Starts the timer. You must call tmrStart before using wait() Definition at line 565 of file deviceman.cc. Referenced by MidiPlayer::play(). |
|
Stops the timer. This will be called by closeDev() before closing the device Definition at line 591 of file deviceman.cc. Referenced by closeDev(), and MidiPlayer::play(). |
|
Continue the stopped timer . It is the same than starting a new timer, but without resetting it. Definition at line 612 of file deviceman.cc. |
|
Sends an all notes off event.
Definition at line 826 of file deviceman.cc. References MidiOut::allNotesOff(). Referenced by MidiPlayer::play(). |
|
Synchronizes with the MIDI buffer. Midi events are put into a buffer, along with timer delays (see wait() ). sync returns when the buffer is empty.
Definition at line 632 of file deviceman.cc. References MidiOut::sync(). Referenced by MidiPlayer::play(), and MidiStatus::sendData(). |
|
Changes the "master" volume of the played events by altering next volume controller events.
The parameter
Keep in mind that as most MIDI files already play music at near the maximum volume, an Definition at line 810 of file deviceman.cc. References MidiOut::setVolumePercentage(). Referenced by MidiPlayer::play(). |
|
Returns the device to which the MIDI events will be sent. Returns -1 if there's no available device.
Definition at line 766 of file deviceman.cc. |
|
Sets the device to send the MIDI events to. By using midiPorts(), synthDevices(), name() and type(), you should choose which device to use (note that they are numbered with midi ports being first and synth devices next)
Definition at line 771 of file deviceman.cc. |
|
Loads the patches you're going to use . This has effect only for GUS cards, although, if you use this function when defaultDevice() is not a GUS device, it will be ignored. The parameter is an int [256] array, which contain the following: The first 0..127 integers, are the number of times each General MIDI patch will be used, and -1 when the corresponding patch won't be used. The 128..255 integers are the number of times each drum voice (each note on the drum channel) will be used, and -1 when the corresponding percussion won't be used. This is done this way so that if the user has very little memory on his GUS card, and not all patches will be loaded, they are at least reordered, so that it first loads the one you're going to use most. In case you don't worry about such users, or you don't know "a priori" the number of notes you're going to play, you can just use 1 for each patch you want to load and -1 in the rest.
Definition at line 796 of file deviceman.cc. References checkInit(), MidiOut::deviceType(), and GUSOut::setPatchesToUse(). Referenced by MidiPlayer::play(). |
|
Returns the filename where the Midi Mapper was loaded from, or "" if no MIDI Mapper is in use.
Definition at line 778 of file deviceman.cc. References MidiOut::midiMapFilename(). |
|
Sets a MidiMapper object to use. This object should already have loaded the configuration. See the description of MidiMapper for more information.
Definition at line 786 of file deviceman.cc. References MidiOut::setMidiMapper(). Referenced by initManager(). |
|
Returns the SNDCTL_SEQ_CTRLRATE ioctl value.
Definition at line 492 of file deviceman.h. |
|
Returns the number of MIDI ports available on the system. It's common that users have MIDI ports available, but there are no external synthesizers connected to these ports, so sending MIDI events to these ports will not produce any music in this case.
Definition at line 503 of file deviceman.h. Referenced by MidiPlayer::play(). |
|
Returns the number of internal synthesizers available on the system. Some of these devices will need special configuration, for example, to load sound patches.
Definition at line 514 of file deviceman.h. Referenced by MidiPlayer::play(). |
|
Returns the name of the In case the DeviceManager wasn't yet initialized ( see checkInit() ), the return value is NULL, and in case the parameter has a value out of the valid range ( 0 to midiPorts() + synthDevices() ) it returns an empty string. Definition at line 718 of file deviceman.cc. References checkInit(), and MidiOut::deviceName(). Referenced by initManager(). |
|
Returns the type of device the For example, "External Midi Port" for midi ports, "FM" for FM synthesizers, "GUS" for Gravis Ultrasound devices, etc. Definition at line 736 of file deviceman.cc. References checkInit(). |
The documentation for this class was generated from the following files: