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/* Copyright (c) 1997-2003 Guenter Geiger, Miller Puckette, Larry Troxler,
* Winfried Ritsch, Karl MacMillan, and others.
* For information on usage and redistribution, and for a DISCLAIMER OF ALL
* WARRANTIES, see the file, "LICENSE.txt," in this distribution.
this file calls portmidi to do MIDI I/O for MSW and Mac OSX.
applied sysexin/midiin patch by Nathaniel Dose, july 2007.
*/
#include "desire.h"
#include <stdio.h>
#ifdef UNISTD
#include <unistd.h>
#include <sys/time.h>
#include <sys/resource.h>
#endif
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <portaudio.h>
#include <portmidi.h>
#include <porttime.h>
static PmStream *mac_midiindevlist[MAXMIDIINDEV];
static PmStream *mac_midioutdevlist[MAXMIDIOUTDEV];
static int mac_nmidiindev;
static int mac_nmidioutdev;
void sys_do_open_midi(int nmidiin, int *midiinvec, int nmidiout, int *midioutvec) {
PmError err;
Pt_Start(1, 0, 0); /* start a timer with millisecond accuracy */
mac_nmidiindev = 0;
for (int i=0; i<nmidiin; i++) {
int found = 0,count = Pm_CountDevices();
for (int j=0, devno=0; j<count && !found; j++) {
const PmDeviceInfo *info = Pm_GetDeviceInfo(j);
if (info->input) {
if (devno == midiinvec[i]) {
err = Pm_OpenInput(&mac_midiindevlist[mac_nmidiindev],j,NULL,100,NULL,NULL);
if (err != pmNoError) post("could not open midi input %d (%s): %s", j, info->name, Pm_GetErrorText(err));
else {mac_nmidiindev++; if (sys_verbose) post("Midi Input (%s) opened.", info->name);}
found = 1;
}
devno++;
}
}
if (!found) post("could not find midi device %d",midiinvec[i]);
}
mac_nmidioutdev = 0;
for (int i=0; i<nmidiout; i++) {
int found = 0,count = Pm_CountDevices();
for (int j=0, devno=0; j<count && !found; j++) {
const PmDeviceInfo *info = Pm_GetDeviceInfo(j);
if (info->output) {
if (devno == midioutvec[i]) {
err = Pm_OpenOutput(&mac_midioutdevlist[mac_nmidioutdev],j,NULL,0,NULL,NULL,0);
if (err != pmNoError) post("could not open midi output %d (%s): %s",j,info->name,Pm_GetErrorText(err));
else {mac_nmidioutdev++; if (sys_verbose) post("Midi Output (%s) opened.",info->name);}
found = 1;
}
devno++;
}
}
if (!found) post("could not find midi device %d",midioutvec[i]);
}
}
void sys_close_midi () {
for (int i=0; i< mac_nmidiindev; i++) Pm_Close(mac_midiindevlist[i]);
mac_nmidiindev = 0;
for (int i=0; i<mac_nmidioutdev; i++) Pm_Close(mac_midioutdevlist[i]);
mac_nmidioutdev = 0;
}
void sys_putmidimess(int portno, int a, int b, int c) {
PmEvent buffer;
/* post("put 1 msg %d %d", portno, mac_nmidioutdev); */
if (portno >= 0 && portno < mac_nmidioutdev) {
buffer.message = Pm_Message(a, b, c);
buffer.timestamp = 0;
/* post("put msg"); */
Pm_Write(mac_midioutdevlist[portno], &buffer, 1);
}
}
static void writemidi4(PortMidiStream* stream, int a, int b, int c, int d) {
PmEvent buffer;
buffer.timestamp = 0;
buffer.message = ((a & 0xff) | ((b & 0xff) << 8) | ((c & 0xff) << 16) | ((d & 0xff) << 24));
Pm_Write(stream, &buffer, 1);
}
void sys_putmidibyte(int portno, int byte) {
/* try to parse the bytes into MIDI messages so they can fit into PortMidi buffers. */
static int mess[4];
static int nbytes = 0, sysex = 0, i;
if (byte >= 0xf8) /* MIDI real time */
writemidi4(mac_midioutdevlist[portno], byte, 0, 0, 0);
else if (byte == 0xf0) {
mess[0] = 0xf0;
nbytes = 1;
sysex = 1;
} else if (byte == 0xf7) {
mess[nbytes] = byte;
for (i = nbytes+1; i<4; i++) mess[i] = 0;
writemidi4(mac_midioutdevlist[portno], mess[0], mess[1], mess[2], mess[3]);
sysex = 0;
nbytes = 0;
} else if (byte >= 0x80) {
sysex = 0;
if (byte == 0xf4 || byte == 0xf5 || byte == 0xf6) {
writemidi4(mac_midioutdevlist[portno], byte, 0, 0, 0);
nbytes = 0;
} else {
mess[0] = byte;
nbytes = 1;
}
} else if (sysex) {
mess[nbytes] = byte;
nbytes++;
if (nbytes == 4) {
writemidi4(mac_midioutdevlist[portno], mess[0], mess[1], mess[2], mess[3]);
nbytes = 0;
}
} else if (nbytes) {
int status = mess[0];
if (status < 0xf0) status &= 0xf0;
/* 2 byte messages: */
if (status == 0xc0 || status == 0xd0 || status == 0xf1 || status == 0xf3) {
writemidi4(mac_midioutdevlist[portno], mess[0], byte, 0, 0);
nbytes = (status < 0xf0 ? 1 : 0);
} else {
if (nbytes == 1) {
mess[1] = byte;
nbytes = 2;
} else {
writemidi4(mac_midioutdevlist[portno],
mess[0], mess[1], byte, 0);
nbytes = (status < 0xf0 ? 1 : 0);
}
}
}
}
/* this is non-zero if we are in the middle of transmitting sysex */
int nd_sysex_mode=0;
/* send in 4 bytes of sysex data. if one of the bytes is 0xF7 (sysex end) stop and unset nd_sysex_mode */
void nd_sysex_inword(int midiindev, int status, int data1, int data2, int data3) {
if (nd_sysex_mode) {sys_midibytein(midiindev, status); if (status == 0xF7) nd_sysex_mode = 0;}
if (nd_sysex_mode) {sys_midibytein(midiindev, data1); if (data1 == 0xF7) nd_sysex_mode = 0;}
if (nd_sysex_mode) {sys_midibytein(midiindev, data2); if (data2 == 0xF7) nd_sysex_mode = 0;}
if (nd_sysex_mode) {sys_midibytein(midiindev, data3); if (data3 == 0xF7) nd_sysex_mode = 0;}
}
void sys_poll_midi() {
PmEvent buffer;
for (int i=0; i<mac_nmidiindev; i++) {
int nmess = Pm_Read(mac_midiindevlist[i], &buffer, 1);
if (nmess > 0) {
PmMessage msg = buffer.message;
int status = Pm_MessageStatus(msg);
if(status == 0xf0 || !(status&0x80)) {
/* sysex header or data */
for(int j=0; j<4; ++j,msg >>= 8) {
int data = msg&0xff;
sys_midibytein(i, data);
if(data == 0xf7) break; /* sysex end */
}
} else {
int data1 = Pm_MessageData1(msg);
int data2 = Pm_MessageData2(msg);
/* non-sysex */
sys_midibytein(i, status);
switch(status>>4) {
case 0x8: /* note off */
case 0x9: /* note on */
case 0xa: /* poly pressure */
case 0xb: /* control change */
case 0xe: /* pitch bend */
sys_midibytein(i,data1);
sys_midibytein(i,data2);
break;
case 0xc: /* program change */
case 0xd: /* channel pressure */
sys_midibytein(i,data1);
break;
case 0xf: /* system common/realtime messages */
switch(status) {
case 0xf1: /* time code */
case 0xf3: /* song select */
case 0xf6: /* tune request */
sys_midibytein(i,data1);
break;
case 0xf2: /* song position pointer */
sys_midibytein(i,data1);
sys_midibytein(i,data2);
break;
case 0xf7: // from Nathaniel; don't know whether it'll work in this context.
nd_sysex_mode=1;
nd_sysex_inword(i,status,data1,data2,((msg>>24)&0xFF));
break;
default: // from Nathaniel too.
if (nd_sysex_mode) nd_sysex_inword(i,status,data1,data2,((msg>>24)&0xFF));
break;
}
}
}
}
}
}
#if 0
/* lifted from pa_devs.c in portaudio */
void sys_listmididevs() {
for (int i=0; i<Pm_CountDevices(); i++) {
const PmDeviceInfo *info = Pm_GetDeviceInfo(i);
printf("%d: %s, %s", i, info->interf, info->name);
if (info->input) printf(" (input)");
if (info->output) printf(" (output)");
printf("\n");
}
}
#endif
void midi_getdevs(char *indevlist, int *nindevs, char *outdevlist, int *noutdevs, int maxndev, int devdescsize) {
int nindev=0, noutdev=0;
for (int i=0; i<Pm_CountDevices(); i++) {
const PmDeviceInfo *info = Pm_GetDeviceInfo(i);
/* post("%d: %s, %s (%d,%d)", i, info->interf, info->name,info->input, info->output); */
if (info->input && nindev < maxndev) {strcpy(indevlist + nindev * devdescsize, info->name); nindev++;}
if (info->output && noutdev < maxndev) {strcpy(outdevlist + noutdev * devdescsize, info->name); noutdev++;}
}
*nindevs = nindev;
*noutdevs = noutdev;
}
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