diff options
Diffstat (limited to 'desiredata/src/s_midi_sgi.c')
| -rw-r--r-- | desiredata/src/s_midi_sgi.c | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/desiredata/src/s_midi_sgi.c b/desiredata/src/s_midi_sgi.c new file mode 100644 index 00000000..8a0895ba --- /dev/null +++ b/desiredata/src/s_midi_sgi.c @@ -0,0 +1,143 @@ +/* Copyright (c) 1997-1999 Miller Puckette. +* For information on usage and redistribution, and for a DISCLAIMER OF ALL +* WARRANTIES, see the file, "LICENSE.txt," in this distribution. */ + +#include "m_pd.h" +#include "s_stuff.h" +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <string.h> +#ifdef HAVE_BSTRING_H +#include <bstring.h> +#endif +#include <sys/types.h> +#include <sys/time.h> +#include <dmedia/audio.h> +#include <sys/fpu.h> +#include <dmedia/midi.h> +int mdInit(); /* prototype was messed up in midi.h */ +//#include "sys/select.h" + +/* set the special "flush zero" but (FS, bit 24) in the Control Status Register of the FPU of R4k and beyond + so that the result of any underflowing operation will be clamped to zero, and no exception of any kind will + be generated on the CPU. thanks to cpirazzi@cp.esd.sgi.com (Chris Pirazzi). */ + +static void sgi_flush_all_underflows_to_zero() { + union fpc_csr f; + f.fc_word = get_fpc_csr(); + f.fc_struct.flush = 1; + set_fpc_csr(f.fc_word); +} + +#define NPORT 2 + +static MDport sgi_inport[NPORT]; +static MDport sgi_outport[NPORT]; + +void sgi_open_midi(int midiin, int midiout) { + int i; + int sgi_nports = mdInit(); + if (sgi_nports < 0) sgi_nports = 0; + else if (sgi_nports > NPORT) sgi_nports = NPORT; + if (sys_verbose) { + if (!sgi_nports) { + post("no serial ports are configured for MIDI;"); + post("if you want to use MIDI, try exiting Pd, typing"); + post("'startmidi -d /dev/ttyd2' to a shell, and restarting Pd."); + } else if (sgi_nports == 1) post("Found one MIDI port on %s", mdGetName(0)); + else if (sgi_nports == 2) post("Found MIDI ports on %s and %s", mdGetName(0), mdGetName(1)); + } + if (midiin) { + for (i = 0; i < sgi_nports; i++) { + if (!(sgi_inport[i] = mdOpenInPort(mdGetName(i)))) error("MIDI input port %d: open failed", i+1); + } + } + if (midiout) { + for (i = 0; i < sgi_nports; i++) { + if (!(sgi_outport[i] = mdOpenOutPort(mdGetName(i)))) error("MIDI output port %d: open failed", i+1); + } + } + return; +} + +void sys_putmidimess(int portno, int a, int b, int c) { + MDevent mdv; + if (portno >= NPORT || portno < 0 || !sgi_outport[portno]) return; + mdv.msg[0] = a; + mdv.msg[1] = b; + mdv.msg[2] = c; + mdv.msg[3] = 0; + mdv.sysexmsg = 0; + mdv.stamp = 0; + mdv.msglen = 0; + if (mdSend(sgi_outport[portno], &mdv, 1) < 0) error("MIDI output error"); + post("msg out %d %d %d", a, b, c); +} + +void sys_putmidibyte(int portno, int foo) { + error("MIDI raw byte output not available on SGI"); +} + +void inmidi_noteon(int portno, int channel, int pitch, int velo); +void inmidi_controlchange(int portno, int channel, int ctlnumber, int value); +void inmidi_programchange(int portno, int channel, int value); +void inmidi_pitchbend(int portno, int channel, int value); +void inmidi_aftertouch(int portno, int channel, int value); +void inmidi_polyaftertouch(int portno, int channel, int pitch, int value); + +void sys_poll_midi() { + int i; + MDport *mp; + for (i = 0, mp = sgi_inport; i < NPORT; i++, mp++) { + int ret, status, b1, b2, nfds; + MDevent mdv; + fd_set inports; + struct timeval timeout; + timeout.tv_sec = 0; + timeout.tv_usec = 0; + if (!*mp) continue; + FD_ZERO(&inports); + FD_SET(mdGetFd(*mp), &inports); + if (select(mdGetFd(*mp)+1 , &inports, 0, 0, &timeout) < 0) perror("midi select"); + if (FD_ISSET(mdGetFd(*mp),&inports)) { + if (mdReceive(*mp, &mdv, 1) < 0) + error("failure receiving message"); + else if (mdv.msg[0] == MD_SYSEX) mdFree(mdv.sysexmsg); + else { + int status = mdv.msg[0]; + int channel = (status & 0xf) + 1; + int b1 = mdv.msg[1]; + int b2 = mdv.msg[2]; + switch(status & 0xf0) { + case MD_NOTEOFF: inmidi_noteon(i, channel, b1, 0); break; + case MD_NOTEON: inmidi_noteon(i, channel, b1, b2); break; + case MD_POLYKEYPRESSURE: inmidi_polyaftertouch(i, channel, b1, b2); break; + case MD_CONTROLCHANGE: inmidi_controlchange(i, channel, b1, b2); break; + case MD_PITCHBENDCHANGE: inmidi_pitchbend(i, channel, ((b2 << 7) + b1)); break; + case MD_PROGRAMCHANGE: inmidi_programchange(i, channel, b1); break; + case MD_CHANNELPRESSURE: inmidi_aftertouch(i, channel, b1); break; + } + } + } + } +} + +void sys_do_open_midi(int nmidiin, int *midiinvec, int nmidiout, int *midioutvec) { + sgi_open_midi(nmidiin!=0, nmidiout!=0); +} +void sys_close_midi() {/* ??? */} + +void midi_getdevs(char *indevlist, int *nindevs, char *outdevlist, int *noutdevs, int maxndev, int devdescsize) { + int i, nindev = 0, noutdev = 0; + for (i = 0; i < mdInit(); i++) { + if (nindev < maxndev) { + strcpy(indevlist + nindev * devdescsize, mdGetName(i)); + nindev++; + strcpy(outdevlist + noutdev * devdescsize, mdGetName(i)); + noutdev++; + } + } + *nindevs = nindev; + *noutdevs = noutdev; +} |