diff options
Diffstat (limited to 'desiredata/src/s_midi_alsa.c')
-rw-r--r-- | desiredata/src/s_midi_alsa.c | 201 |
1 files changed, 0 insertions, 201 deletions
diff --git a/desiredata/src/s_midi_alsa.c b/desiredata/src/s_midi_alsa.c deleted file mode 100644 index d4becccc..00000000 --- a/desiredata/src/s_midi_alsa.c +++ /dev/null @@ -1,201 +0,0 @@ -/* Copyright (c) 1997-1999 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. */ - -/* MIDI I/O for Linux using ALSA */ - -#include <stdio.h> -#ifdef UNISTD -#include <unistd.h> -#endif -#include <stdlib.h> -#include <sys/types.h> -#include <sys/stat.h> -#include <fcntl.h> -#include <errno.h> -#include <alsa/asoundlib.h> -#include "desire.h" -using namespace desire; - -#define MAX_EVENT_SIZE 256 - -static int alsa_nmidiin; -static int alsa_midiinfd[MAXMIDIINDEV]; -static int alsa_nmidiout; -static int alsa_midioutfd[MAXMIDIOUTDEV]; -static snd_seq_t *midi_handle; -static snd_midi_event_t *midiev; - -static unsigned short CombineBytes(unsigned char First, unsigned char Second) { - return ((unsigned short)Second << 7) | (unsigned short)First; -} - -void sys_alsa_do_open_midi(int nmidiin, int *midiinvec, int nmidiout, int *midioutvec) { - char portname[50]; - int err = 0; - snd_seq_client_info_t *alsainfo; - /* do we want to connect pd automatically with other devices ?; see below! */ - /* LATER: think about a flag to enable/disable automatic connection (sometimes it could be a pain) */ - int autoconnect = 1; - alsa_nmidiin = 0; - alsa_nmidiout = 0; - if (nmidiout == 0 && nmidiin == 0) return; - if (nmidiin>MAXMIDIINDEV) {post( "midi input ports reduced to maximum %d", MAXMIDIINDEV); nmidiin =MAXMIDIINDEV;} - if (nmidiout>MAXMIDIOUTDEV) {post("midi output ports reduced to maximum %d", MAXMIDIOUTDEV); nmidiout=MAXMIDIOUTDEV;} - if (nmidiin>0 && nmidiout>0) err = snd_seq_open(&midi_handle,"default",SND_SEQ_OPEN_DUPLEX,0); - else if (nmidiin > 0) err = snd_seq_open(&midi_handle,"default",SND_SEQ_OPEN_INPUT,0); - else if (nmidiout > 0) err = snd_seq_open(&midi_handle,"default",SND_SEQ_OPEN_OUTPUT,0); - if (err!=0) { - sys_setalarm(1000000); - post("couldn't open alsa sequencer"); - return; - } - int client; - for (int i=0; i<nmidiin; i++) { - sprintf(portname,"Pure Data Midi-In %d",i+1); - int port = snd_seq_create_simple_port(midi_handle,portname, - SND_SEQ_PORT_CAP_WRITE |SND_SEQ_PORT_CAP_SUBS_WRITE, SND_SEQ_PORT_TYPE_APPLICATION); - if (port < 0) goto error; - alsa_midiinfd[i] = port; - } - for (int i=0; i<nmidiout; i++) { - sprintf(portname,"Pure Data Midi-Out %d",i+1); - int port = snd_seq_create_simple_port(midi_handle,portname, - SND_SEQ_PORT_CAP_READ | SND_SEQ_PORT_CAP_SUBS_READ, SND_SEQ_PORT_TYPE_APPLICATION); - if (port < 0) goto error; - alsa_midioutfd[i] = port; - } - snd_seq_client_info_malloc(&alsainfo); - snd_seq_get_client_info(midi_handle,alsainfo); - snd_seq_client_info_set_name(alsainfo,"Pure Data"); - client = snd_seq_client_info_get_client(alsainfo); - snd_seq_set_client_info(midi_handle,alsainfo); - snd_seq_client_info_free(alsainfo); - post("Opened Alsa Client %d in:%d out:%d",client,nmidiin,nmidiout); - sys_setalarm(0); - snd_midi_event_new(MAX_EVENT_SIZE,&midiev); - alsa_nmidiout = nmidiout; - alsa_nmidiin = nmidiin; - /* JMZ: connect all available devices to pd */ - if (autoconnect) { - snd_seq_client_info_t *cinfo; - snd_seq_port_info_t *pinfo; - snd_seq_port_subscribe_t *subs; - snd_seq_addr_t other, topd, frompd; - /* since i don't know how to connect multiple ports (connect everything to each port, modulo,...), - * i only fully connect where we have only one single port */ - if(alsa_nmidiin ) { topd.client = client; topd.port = alsa_midiinfd [0];} - if(alsa_nmidiout) {frompd.client = client; frompd.port = alsa_midioutfd[0];} - snd_seq_port_subscribe_alloca(&subs); - snd_seq_client_info_alloca(&cinfo); - snd_seq_port_info_alloca(&pinfo); - snd_seq_client_info_set_client(cinfo, -1); - while (snd_seq_query_next_client(midi_handle, cinfo) >= 0) { - /* reset query info */ - int client_id=snd_seq_client_info_get_client(cinfo); - if((SND_SEQ_CLIENT_SYSTEM != client_id)&&(client != client_id)) { /* skipping port 0 and ourself */ - snd_seq_port_info_set_client(pinfo, client_id); - snd_seq_port_info_set_port(pinfo, -1); - while (snd_seq_query_next_port(midi_handle, pinfo) >= 0) { - other.client=client_id; - other.port =snd_seq_port_info_get_port(pinfo); - if(1==alsa_nmidiin) /* only autoconnect 1st port */ { - snd_seq_port_subscribe_set_sender(subs, &other); - snd_seq_port_subscribe_set_dest(subs, &topd); - snd_seq_subscribe_port(midi_handle, subs); - } - if(1==alsa_nmidiout) /* only autoconnect 1st port */ { - snd_seq_port_subscribe_set_sender(subs, &frompd); - snd_seq_port_subscribe_set_dest(subs, &other); - snd_seq_subscribe_port(midi_handle, subs); - } - } - } - } - } - return; - error: - sys_setalarm(1000000); - post("couldn't open alsa MIDI output device"); - return; -} - -void sys_alsa_putmidimess(int portno, int a, int b, int c) { - int channel = a&15; - snd_seq_event_t ev; - snd_seq_ev_clear(&ev); - if (portno >= 0 && portno < alsa_nmidiout) { - if (a >= 224) snd_seq_ev_set_pitchbend(&ev,channel,CombineBytes(b,c)); - else if (a >= 208) snd_seq_ev_set_chanpress(&ev,channel,b); // touch - else if (a >= 192) snd_seq_ev_set_pgmchange(&ev,channel,b); - else if (a >= 176) snd_seq_ev_set_controller(&ev,channel,b,c); - else if (a >= 160) snd_seq_ev_set_keypress(&ev,channel,b,c);// polytouch - else if (a >= 144) { // note - channel = a-144; - if (c) snd_seq_ev_set_noteon(&ev,channel,b,c); - else snd_seq_ev_set_noteoff(&ev,channel,b,c); - } - snd_seq_ev_set_direct(&ev); - snd_seq_ev_set_subs(&ev); - snd_seq_ev_set_source(&ev,alsa_midioutfd[portno]); - snd_seq_event_output_direct(midi_handle,&ev); - } -} - -void sys_alsa_putmidibyte(int portno, int byte) { - snd_seq_event_t ev; - snd_seq_ev_clear(&ev); - if (portno >= 0 && portno < alsa_nmidiout) { - // repack into 1 byte char and put somewhere to point at - unsigned char data = (unsigned char)byte; - snd_seq_ev_set_sysex(&ev,1,&data); //...set_variable *should* have worked but didn't - snd_seq_ev_set_direct(&ev); - snd_seq_ev_set_subs(&ev); - snd_seq_ev_set_source(&ev,alsa_midioutfd[portno]); - snd_seq_event_output_direct(midi_handle,&ev); - } -} - -/* this version uses the asynchronous "read()" ... */ -void sys_alsa_poll_midi() { - unsigned char buf[MAX_EVENT_SIZE]; - int count, alsa_source; - snd_seq_event_t *midievent = NULL; - if (alsa_nmidiout == 0 && alsa_nmidiin == 0) return; - snd_midi_event_init(midiev); - if (!alsa_nmidiout && !alsa_nmidiin) return; - count = snd_seq_event_input_pending(midi_handle,1); - if (count != 0) count = snd_seq_event_input(midi_handle,&midievent); - if (midievent != NULL) { - count = snd_midi_event_decode(midiev,buf,sizeof(buf),midievent); - alsa_source = midievent->dest.port; - for(int i=0; i<count; i++) sys_midibytein(alsa_source, (buf[i] & 0xff)); - //post("received %d midi bytes",count); - } -} - -void sys_alsa_close_midi() { - alsa_nmidiin = alsa_nmidiout = 0; - if(midi_handle) { - snd_seq_close(midi_handle); - if(midiev) snd_midi_event_free(midiev); - } -} - -#define NSEARCH 10 -static int alsa_nmidiindevs, alsa_nmidioutdevs, alsa_initted; - -void midi_alsa_init() { - if (alsa_initted) return; - alsa_initted = 1; -} - -void midi_alsa_getdevs(char *indevlist, int *nindevs, char *outdevlist, int *noutdevs, int maxndev, int devdescsize) { - int ndev = min(maxndev,alsa_nmidiindevs); - for (int i=0; i<ndev; i++) sprintf(indevlist + i * devdescsize, "ALSA MIDI device #%d", i+1); - *nindevs = ndev; - ndev = min(maxndev,alsa_nmidioutdevs); - for (int i=0; i<ndev; i++) sprintf(outdevlist + i * devdescsize, "ALSA MIDI device #%d", i+1); - *noutdevs = ndev; -} |