diff options
Diffstat (limited to 'src/midiio/src/MidiOutPort_linux.cpp')
| -rw-r--r-- | src/midiio/src/MidiOutPort_linux.cpp | 381 |
1 files changed, 381 insertions, 0 deletions
diff --git a/src/midiio/src/MidiOutPort_linux.cpp b/src/midiio/src/MidiOutPort_linux.cpp new file mode 100644 index 0000000..43bba90 --- /dev/null +++ b/src/midiio/src/MidiOutPort_linux.cpp @@ -0,0 +1,381 @@ +// +// 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 |