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//
// Programmer: Craig Stuart Sapp <craig@ccrma.stanford.edu>
// Creation Date: Sun May 14 20:58:32 PDT 2000
// Last Modified: Thu May 18 23:37:11 PDT 2000
// Last Modified: Sat Nov 2 20:40:01 PST 2002 (added ALSA OSS def)
// Filename: ...sig/code/control/MidiOutPort_linux/MidiOutPort_linux.cpp
// Web Address: http://sig.sapp.org/include/sig/MidiOutPort_linux.cpp
// Syntax: C++
//
// Description: Linux MIDI output class which detects which
// type of MIDI drivers are available: either
// ALSA or OSS.
//
#ifdef LINUX
#if defined(ALSA) && defined(OSS)
#include "MidiOutPort_linux.h"
#include <sys/types.h>
#include <sys/stat.h>
#include <stdlib.h>
// initialize static members
int MidiOutPort_linux::objectCount = 0;
int MidiOutPort_linux::current = UNKNOWN_MIDI_SELECT; // MIDI out selected
int MidiOutPort_linux::alsaQ = 0; // boolean for if ALSA is present
int MidiOutPort_linux::ossQ = 0; // boolean for if OSS is present
MidiOutPort_oss *MidiOutPort_linux::oss_output = NULL;
MidiOutPort_alsa *MidiOutPort_linux::alsa_output = NULL;
MidiOutPort_unsupported *MidiOutPort_linux::unknown_output = NULL;
MidiOutPort_linux::MidiOutPort_linux(void) {
if (objectCount == 0) {
determineDrivers();
} else if (objectCount < 0) {
cout << "Error: unusual MidiOutPort_linux object count" << endl;
exit(1);
}
objectCount++;
}
MidiOutPort_linux::MidiOutPort_linux(int aPort, int autoOpen = 1) {
determineDrivers();
setAndOpenPort(aPort);
}
MidiOutPort_linux::~MidiOutPort_linux() {
objectCount--;
if (objectCount == 0) {
if (oss_output != NULL) {
delete oss_output;
oss_output = NULL;
}
if (alsa_output != NULL) {
delete alsa_output;
alsa_output = NULL;
}
if (unknown_output != NULL) {
delete unknown_output;
unknown_output = NULL;
}
}
if (objectCount < 0) {
cout << "Error: unusual MidiOutPort_linux count when destructing" << endl;
exit(1);
}
}
void MidiOutPort_linux::close(void) {
switch (getSelect()) {
case OSS_MIDI_SELECT: oss_output->close(); break;
case ALSA_MIDI_SELECT: alsa_output->close(); break;
default: unknown_output->close(); break;
}
}
void MidiOutPort_linux::closeAll(void) {
switch (getSelect()) {
case OSS_MIDI_SELECT: oss_output->closeAll(); break;
case ALSA_MIDI_SELECT: alsa_output->closeAll(); break;
default: unknown_output->closeAll(); break;
}
}
int MidiOutPort_linux::getChannelOffset(void) const {
switch (getSelect()) {
case OSS_MIDI_SELECT: return oss_output->getChannelOffset(); break;
case ALSA_MIDI_SELECT: return alsa_output->getChannelOffset(); break;
default: return unknown_output->getChannelOffset(); break;
}
}
const char* MidiOutPort_linux::getName(void) {
switch (getSelect()) {
case OSS_MIDI_SELECT: return oss_output->getName(); break;
case ALSA_MIDI_SELECT: return alsa_output->getName(); break;
default: return unknown_output->getName(); break;
}
}
const char* MidiOutPort_linux::getName(int i) {
switch (getSelect()) {
case OSS_MIDI_SELECT: return oss_output->getName(i); break;
case ALSA_MIDI_SELECT: return alsa_output->getName(i); break;
default: return unknown_output->getName(i); break;
}
}
int MidiOutPort_linux::getNumPorts(void) {
switch (getSelect()) {
case OSS_MIDI_SELECT: return oss_output->getNumPorts(); break;
case ALSA_MIDI_SELECT: return alsa_output->getNumPorts(); break;
default: return unknown_output->getNumPorts(); break;
}
}
int MidiOutPort_linux::getPort(void) {
switch (getSelect()) {
case OSS_MIDI_SELECT: return oss_output->getPort(); break;
case ALSA_MIDI_SELECT: return alsa_output->getPort(); break;
default: return unknown_output->getPort(); break;
}
}
int MidiOutPort_linux::getPortStatus(void) {
switch (getSelect()) {
case OSS_MIDI_SELECT: return oss_output->getPortStatus(); break;
case ALSA_MIDI_SELECT: return alsa_output->getPortStatus(); break;
default: return unknown_output->getPortStatus(); break;
}
}
int MidiOutPort_linux::getTrace(void) {
switch (getSelect()) {
case OSS_MIDI_SELECT: return oss_output->getTrace(); break;
case ALSA_MIDI_SELECT: return alsa_output->getTrace(); break;
default: return unknown_output->getTrace(); break;
}
}
int MidiOutPort_linux::open(void) {
switch (getSelect()) {
case OSS_MIDI_SELECT: return oss_output->open(); break;
case ALSA_MIDI_SELECT: return alsa_output->open(); break;
default: return unknown_output->open(); break;
}
}
int MidiOutPort_linux::rawsend(int command, int p1, int p2) {
switch (getSelect()) {
case OSS_MIDI_SELECT: return oss_output->rawsend(command, p1, p2); break;
case ALSA_MIDI_SELECT: return alsa_output->rawsend(command, p1, p2); break;
default: return unknown_output->rawsend(command, p1, p2); break;
}
}
int MidiOutPort_linux::rawsend(int command, int p1) {
switch (getSelect()) {
case OSS_MIDI_SELECT: return oss_output->rawsend(command, p1); break;
case ALSA_MIDI_SELECT: return alsa_output->rawsend(command, p1); break;
default: return unknown_output->rawsend(command, p1); break;
}
}
int MidiOutPort_linux::rawsend(int command) {
switch (getSelect()) {
case OSS_MIDI_SELECT: return oss_output->rawsend(command); break;
case ALSA_MIDI_SELECT: return alsa_output->rawsend(command); break;
default: return unknown_output->rawsend(command); break;
}
}
int MidiOutPort_linux::rawsend(uchar* array, int size) {
switch (getSelect()) {
case OSS_MIDI_SELECT: return oss_output->rawsend(array, size); break;
case ALSA_MIDI_SELECT: return alsa_output->rawsend(array, size); break;
default: return unknown_output->rawsend(array, size); break;
}
}
void MidiOutPort_linux::setAndOpenPort(int aPort) {
switch (getSelect()) {
case OSS_MIDI_SELECT:
oss_output->setPort(aPort);
oss_output->open();
break;
case ALSA_MIDI_SELECT:
alsa_output->setPort(aPort);
alsa_output->open();
break;
default:
unknown_output->setPort(aPort);
unknown_output->open();
break;
}
}
void MidiOutPort_linux::setChannelOffset(int aChannel) {
switch (getSelect()) {
case OSS_MIDI_SELECT: oss_output->setChannelOffset(aChannel); break;
case ALSA_MIDI_SELECT: alsa_output->setChannelOffset(aChannel); break;
default: unknown_output->setChannelOffset(aChannel); break;
}
}
void MidiOutPort_linux::setPort(int aPort) {
switch (getSelect()) {
case OSS_MIDI_SELECT: oss_output->setPort(aPort); break;
case ALSA_MIDI_SELECT:
alsa_output->setPort(aPort); break;
default: unknown_output->setPort(aPort); break;
}
}
int MidiOutPort_linux::setTrace(int aState) {
switch (getSelect()) {
case OSS_MIDI_SELECT: return oss_output->setTrace(aState); break;
case ALSA_MIDI_SELECT: return alsa_output->setTrace(aState); break;
default: return unknown_output->setTrace(aState); break;
}
}
int MidiOutPort_linux::sysex(uchar* array, int size) {
switch (getSelect()) {
case OSS_MIDI_SELECT: return oss_output->sysex(array, size); break;
case ALSA_MIDI_SELECT: return alsa_output->sysex(array, size); break;
default: return unknown_output->sysex(array, size); break;
}
}
void MidiOutPort_linux::toggleTrace(void) {
switch (getSelect()) {
case OSS_MIDI_SELECT: oss_output->toggleTrace(); break;
case ALSA_MIDI_SELECT: alsa_output->toggleTrace(); break;
default: unknown_output->toggleTrace(); break;
}
}
//////////////////////////////
//
// MidiOutPort_linux::getSelect -- return the type of MIDI which
// is being used to send MIDI output.
//
int MidiOutPort_linux::getSelect(void) {
return current;
}
//////////////////////////////
//
// MidiOutPort_linux::selectOSS -- select the OSS MIDI output
// returns 1 if OSS is available, otherwise returns 0.
//
int MidiOutPort_linux::selectOSS(void) {
if (ossQ) {
current = OSS_MIDI_SELECT;
return 1;
} else {
return 0;
}
}
//////////////////////////////
//
// MidiOutPort_linux::selectALSA -- select the ALSA MIDI output
// returns 1 if ALSA is available, otherwise returns 0.
//
int MidiOutPort_linux::selectALSA(void) {
if (alsaQ) {
current = ALSA_MIDI_SELECT;
return 1;
} else {
return 0;
}
}
//////////////////////////////
//
// MidiOutPort_linux::selectUnknown -- select the Unknown MIDI output
// returns 1 always.
//
int MidiOutPort_linux::selectUnknown(void) {
current = UNKNOWN_MIDI_SELECT;
return 1;
}
///////////////////////////////////////////////////////////////////////////
//
// Private Functions
//
#include <unistd.h>
//////////////////////////////
//
// MidiOutPort_linux::determineDrivers -- see if OSS/ALSA are
// available. If /dev/sequencer is present, assume that OSS is
// available. If /dev/snd/sdq is present, assume that ALSA is
// available.
//
void MidiOutPort_linux::determineDrivers(void) {
struct stat filestats;
int status;
status = stat("/dev/sequencer", &filestats);
if (status != 0) {
ossQ = 0;
} else {
ossQ = 1;
}
status = stat("/dev/snd/seq", &filestats);
if (status != 0) {
alsaQ = 0;
} else {
alsaQ = 1;
}
current = UNKNOWN_MIDI_SELECT;
if (ossQ) {
current = OSS_MIDI_SELECT;
}
if (alsaQ) {
current = ALSA_MIDI_SELECT;
}
// create MIDI output types which are available:
if (oss_output != NULL) {
delete oss_output;
oss_output = NULL;
}
if (alsa_output != NULL) {
delete alsa_output;
alsa_output = NULL;
}
if (unknown_output != NULL) {
delete unknown_output;
unknown_output = NULL;
}
if (ossQ) {
oss_output = new MidiOutPort_oss;
}
if (alsaQ) {
alsa_output = new MidiOutPort_alsa;
}
unknown_output = new MidiOutPort_unsupported;
}
#endif /* ALSA and OSS */
#endif /* LINUX */
// md5sum: be1ccf667122f1c9cf56a95b2ffb8e79 - MidiOutPort_linux.cpp =css= 20030102
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