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00026 #include "alsaout.h"
00027 #include <unistd.h>
00028 #include <fcntl.h>
00029 #include <stdio.h>
00030 #include "sndcard.h"
00031 #include <errno.h>
00032 #include <string.h>
00033 #include <stdlib.h>
00034 #include <sys/param.h>
00035 #include "midispec.h"
00036
00037
00038 #ifdef HAVE_CONFIG_H
00039 #include <config.h>
00040 #endif
00041
00042 #ifdef HAVE_ALSA_ASOUNDLIB_H
00043 # include <alsa/asoundlib.h>
00044 #elif defined(HAVE_SYS_ASOUNDLIB_H)
00045 # include <sys/asoundlib.h>
00046 #endif
00047
00048 #ifdef HAVE_LIBASOUND2
00049 # define HAVE_ALSA_SEQ 1
00050 # define snd_seq_flush_output(x) snd_seq_drain_output(x)
00051 #elif defined(HAVE_LIBASOUND)
00052 # define HAVE_ALSA_SEQ 1
00053 # include <linux/asequencer.h>
00054 #endif
00055
00056
00057 SEQ_USE_EXTBUF();
00058
00059 class AlsaOut::AlsaOutPrivate
00060 {
00061 public:
00062 #ifdef HAVE_ALSA_SEQ
00063 AlsaOutPrivate(int _client, int _port, const char *cname,const char *pname)
00064 {
00065 handle=0L;
00066 src=tgt=0L;
00067 queue=0;
00068 tPCN=1;
00069 tgtclient=_client;
00070 tgtport=_port;
00071 tgtname=new char[strlen(cname)+strlen(pname)+3];
00072 strcpy(tgtname, cname);
00073 strcat(tgtname, " ");
00074 strcat(tgtname, pname);
00075 ev=new snd_seq_event_t;
00076 timerStarted=false;
00077 }
00078 #else
00079 AlsaOutPrivate(int, int, const char *,const char *)
00080 {
00081 }
00082 #endif
00083
00084 ~AlsaOutPrivate()
00085 {
00086 #ifdef HAVE_ALSA_SEQ
00087 delete ev;
00088 delete tgtname;
00089 #endif
00090 }
00091
00092 #ifdef HAVE_ALSA_SEQ
00093 snd_seq_t *handle;
00094 int client;
00095 int queue;
00096 snd_seq_addr_t *src;
00097 snd_seq_addr_t *tgt;
00098
00099 snd_seq_event_t *ev;
00100 int tPCN;
00101
00102 int tgtclient;
00103 int tgtport;
00104 char *tgtname;
00105
00106 bool timerStarted;
00107
00108 #endif
00109 };
00110
00111 AlsaOut::AlsaOut(int d,int _client, int _port, const char *cname,const char *pname) : MidiOut (d)
00112 {
00113 di = new AlsaOutPrivate( _client, _port, cname, pname);
00114 seqfd = 0;
00115 devicetype=KMID_ALSA;
00116 device= d;
00117
00118 volumepercentage=100;
00119 #ifdef HAVE_ALSA_SEQ
00120
00121 #endif
00122
00123 _ok=1;
00124 }
00125
00126 AlsaOut::~AlsaOut()
00127 {
00128 closeDev();
00129 delete di;
00130 }
00131
00132 void AlsaOut::openDev (int)
00133 {
00134 #ifndef HAVE_ALSA_SEQ
00135 return;
00136 #else
00137 _ok=1;
00138 #ifdef HAVE_LIBASOUND2
00139 if (snd_seq_open(&di->handle, "hw", SND_SEQ_OPEN_DUPLEX, 0) < 0)
00140 fprintf(stderr, "Couldn't open sequencer: %s", snd_strerror(errno));
00141 #else
00142 if (snd_seq_open(&di->handle, SND_SEQ_OPEN) < 0)
00143 fprintf(stderr, "Couldn't open sequencer: %s", snd_strerror(errno));
00144 #endif
00145
00146 di->queue = snd_seq_alloc_queue(di->handle);
00147 if (di->queue < 0) {fprintf(stderr, "Couldn't allocate queue"); return; };
00148 di->client = snd_seq_client_id(di->handle);
00149 if (di->client < 0) {fprintf(stderr, "Couldn't get client id"); return; };
00150 di->tgt = new snd_seq_addr_t;
00151 di->tgt->client=di->tgtclient;
00152 di->tgt->port=di->tgtport;
00153
00154 di->src = new snd_seq_addr_t;
00155 di->src->client = di->client;
00156 int port = snd_seq_create_simple_port(di->handle, NULL,
00157 SND_SEQ_PORT_CAP_WRITE | SND_SEQ_PORT_CAP_SUBS_WRITE
00158 | SND_SEQ_PORT_CAP_READ, SND_SEQ_PORT_TYPE_MIDI_GENERIC);
00159 if ( port < 0 )
00160 {
00161 delete di->src;
00162 delete di->tgt;
00163 di->src=0;
00164 di->tgt=0;
00165 _ok=0;
00166 time=0;
00167 snd_seq_free_queue(di->handle, di->queue);
00168 snd_seq_close(di->handle);
00169 fprintf(stderr, "Cannot connect to %d:%d\n",di->tgtclient,di->tgtport);
00170 return;
00171 }
00172 di->src->port = port;
00173
00174
00175 int r=snd_seq_connect_to(di->handle, di->src->port, di->tgt->client, di->tgt->port);
00176 if (r < 0) { _ok=0; fprintf(stderr, "Cannot connect to %d:%d\n",di->tgtclient,di->tgtport); }
00177 time=0;
00178 #endif
00179 }
00180
00181 void AlsaOut::closeDev (void)
00182 {
00183 if (!ok()) return;
00184 #ifdef HAVE_ALSA_SEQ
00185 if (di->handle)
00186 {
00187 if (di->src)
00188 {
00189 snd_seq_delete_simple_port(di->handle,di->src->port);
00190 delete di->src;
00191 }
00192 if (di->tgt) delete di->tgt;
00193 if (di->queue)
00194 {
00195 snd_seq_free_queue(di->handle, di->queue);
00196 snd_seq_close(di->handle);
00197 }
00198 di->handle=0;
00199 }
00200
00201 #endif
00202 }
00203
00204 void AlsaOut::initDev (void)
00205 {
00206 #ifdef HAVE_ALSA_SEQ
00207 int chn;
00208 if (!ok()) return;
00209 uchar gm_reset[5]={0x7e, 0x7f, 0x09, 0x01, 0xf7};
00210 sysex(gm_reset, sizeof(gm_reset));
00211 for (chn=0;chn<16;chn++)
00212 {
00213 chnmute[chn]=0;
00214 if (chn!=9) chnPatchChange(chn,0);
00215 chnPressure(chn,64);
00216 chnPitchBender(chn, 0x00, 0x40);
00217 chnController(chn, CTL_MAIN_VOLUME,110*volumepercentage);
00218 chnController(chn, CTL_EXT_EFF_DEPTH, 0);
00219 chnController(chn, CTL_CHORUS_DEPTH, 0);
00220 chnController(chn, 0x4a, 127);
00221 }
00222 #endif
00223 }
00224
00225 #ifdef HAVE_ALSA_SEQ
00226 void AlsaOut::eventInit(snd_seq_event_t *ev)
00227 {
00228 snd_seq_ev_clear(ev);
00229 snd_seq_real_time_t tmp;
00230 tmp.tv_sec=(time)/1000;
00231 tmp.tv_nsec=(time%1000)*1000000;
00232
00233 if (!di->src) fprintf(stderr,"AlsaOut::eventInit : no source\n");
00234 ev->source = *di->src;
00235 if (!di->tgt) fprintf(stderr,"AlsaOut::eventInit : no target\n");
00236 ev->dest = *di->tgt;
00237
00238 snd_seq_ev_schedule_real(ev, di->queue, 0, &tmp);
00239
00240 }
00241
00242 void AlsaOut::eventSend(snd_seq_event_t *ev)
00243 {
00244 snd_seq_event_output(di->handle, ev);
00245
00246
00247
00248
00249
00250
00251
00252
00253
00254
00255
00256
00257
00258
00259
00260
00261
00262
00263
00264
00265 }
00266
00267 void AlsaOut::timerEventSend(int type)
00268 {
00269 snd_seq_event_t ev;
00270
00271 ev.queue = di->queue;
00272 ev.dest.client = SND_SEQ_CLIENT_SYSTEM;
00273 ev.dest.port = SND_SEQ_PORT_SYSTEM_TIMER;
00274
00275 ev.data.queue.queue = di->queue;
00276
00277 ev.flags = SND_SEQ_TIME_STAMP_REAL | SND_SEQ_TIME_MODE_REL;
00278 ev.time.time.tv_sec = 0;
00279 ev.time.time.tv_nsec = 0;
00280
00281 ev.type = type;
00282
00283 snd_seq_event_output(di->handle, &ev);
00284 snd_seq_flush_output(di->handle);
00285
00286 }
00287
00288 #endif // HAVE_ALSA_SEQ
00289
00290 #ifndef HAVE_ALSA_SEQ
00291 void AlsaOut::noteOn (uchar , uchar , uchar )
00292 {
00293 #else
00294 void AlsaOut::noteOn (uchar chn, uchar note, uchar vel)
00295 {
00296 if (vel==0)
00297 {
00298 noteOff(chn,note,vel);
00299 }
00300 else
00301 {
00302 eventInit(di->ev);
00303 snd_seq_ev_set_noteon(di->ev,map->channel(chn), map->key(chn,chnpatch[chn],note), vel);
00304 eventSend(di->ev);
00305 }
00306 #endif
00307 #ifdef MIDIOUTDEBUG
00308 printfdebug("Note ON >\t chn : %d\tnote : %d\tvel: %d\n",chn,note,vel);
00309 #endif
00310 }
00311
00312 #ifndef HAVE_ALSA_SEQ
00313 void AlsaOut::noteOff (uchar , uchar , uchar )
00314 {
00315 #else
00316 void AlsaOut::noteOff (uchar chn, uchar note, uchar vel)
00317 {
00318 eventInit(di->ev);
00319 snd_seq_ev_set_noteoff(di->ev,map->channel(chn), map->key(chn,chnpatch[chn],note), vel);
00320 eventSend(di->ev);
00321 #endif
00322 #ifdef MIDIOUTDEBUG
00323 printfdebug("Note OFF >\t chn : %d\tnote : %d\tvel: %d\n",chn,note,vel);
00324 #endif
00325 }
00326
00327 #ifndef HAVE_ALSA_SEQ
00328 void AlsaOut::keyPressure (uchar , uchar , uchar )
00329 {
00330 #else
00331 void AlsaOut::keyPressure (uchar chn, uchar note, uchar vel)
00332 {
00333 eventInit(di->ev);
00334 snd_seq_ev_set_keypress(di->ev,map->channel(chn), map->key(chn,chnpatch[chn],note), vel);
00335 eventSend(di->ev);
00336 #endif
00337 }
00338
00339 #ifndef HAVE_ALSA_SEQ
00340 void AlsaOut::chnPatchChange (uchar , uchar )
00341 {
00342 #else
00343 void AlsaOut::chnPatchChange (uchar chn, uchar patch)
00344 {
00345 #ifdef MIDIOUTDEBUG
00346 printfdebug("PATCHCHANGE [%d->%d] %d -> %d\n",
00347 chn,map->channel(chn),patch,map->patch(chn,patch));
00348 #endif
00349 eventInit(di->ev);
00350 snd_seq_ev_set_pgmchange(di->ev,map->channel(chn), map->patch(chn,patch));
00351 eventSend(di->ev);
00352 chnpatch[chn]=patch;
00353 #endif
00354 }
00355
00356 #ifndef HAVE_ALSA_SEQ
00357 void AlsaOut::chnPressure (uchar , uchar )
00358 {
00359 #else
00360 void AlsaOut::chnPressure (uchar chn, uchar vel)
00361 {
00362 eventInit(di->ev);
00363 snd_seq_ev_set_chanpress(di->ev,map->channel(chn), vel);
00364 eventSend(di->ev);
00365
00366 chnpressure[chn]=vel;
00367 #endif
00368 }
00369
00370 #ifndef HAVE_ALSA_SEQ
00371 void AlsaOut::chnPitchBender(uchar ,uchar , uchar )
00372 {
00373 #else
00374 void AlsaOut::chnPitchBender(uchar chn,uchar lsb, uchar msb)
00375 {
00376 map->pitchBender(chn,lsb,msb);
00377 chnbender[chn]=((short)msb<<7) | (lsb & 0x7F);
00378 chnbender[chn]=chnbender[chn]-0x2000;
00379
00380 eventInit(di->ev);
00381 snd_seq_ev_set_pitchbend(di->ev,map->channel(chn), chnbender[chn]);
00382 eventSend(di->ev);
00383 #endif
00384 }
00385
00386 #ifndef HAVE_ALSA_SEQ
00387 void AlsaOut::chnController (uchar , uchar , uchar )
00388 {
00389 #else
00390 void AlsaOut::chnController (uchar chn, uchar ctl, uchar v)
00391 {
00392 map->controller(chn,ctl,v);
00393 if ((ctl==11)||(ctl==7))
00394 {
00395 v=(v*volumepercentage)/100;
00396 if (v>127) v=127;
00397 }
00398
00399 eventInit(di->ev);
00400 snd_seq_ev_set_controller(di->ev,map->channel(chn), ctl, v);
00401 eventSend(di->ev);
00402
00403 chncontroller[chn][ctl]=v;
00404 #endif
00405 }
00406
00407 #ifndef HAVE_ALSA_SEQ
00408 void AlsaOut::sysex(uchar *, ulong )
00409 {
00410 #else
00411 void AlsaOut::sysex(uchar *data, ulong size)
00412 {
00413 eventInit(di->ev);
00414 snd_seq_ev_set_sysex(di->ev, size, data);
00415 eventSend(di->ev);
00416 #endif
00417
00418 #ifdef MIDIOUTDEBUG
00419 printfdebug("sysex\n");
00420 #endif
00421 }
00422
00423 #ifndef HAVE_ALSA_SEQ
00424 void AlsaOut::channelSilence (uchar )
00425 {
00426 #else
00427 void AlsaOut::channelSilence (uchar chn)
00428 {
00429 uchar i;
00430 for ( i=0; i<127; i++)
00431 {
00432 noteOff(chn,i,0);
00433 }
00434 #endif
00435 }
00436
00437 #ifndef HAVE_ALSA_SEQ
00438 void AlsaOut::channelMute(uchar , int )
00439 {
00440 #else
00441 void AlsaOut::channelMute(uchar chn, int a)
00442 {
00443 if (a==1)
00444 {
00445 chnmute[chn]=a;
00446 channelSilence(chn);
00447 }
00448 else if (a==0)
00449 {
00450 chnmute[chn]=a;
00451 }
00452
00453 #endif
00454 }
00455
00456 void AlsaOut::seqbuf_dump (void)
00457 {
00458 printf("You shouldn't be here.\n");
00459 }
00460
00461 void AlsaOut::seqbuf_clean(void)
00462 {
00463 printf("You shouldn't be here neither.\n");
00464 }
00465
00466 void AlsaOut::wait(double ticks)
00467 {
00468
00469 time=(long int)ticks;
00470
00471 #ifdef MIDIOUTDEBUG
00472 printfdebug("Wait >\t ticks: %g\n",ticks);
00473 #endif
00474 }
00475
00476 #ifndef HAVE_ALSA_SEQ
00477 void AlsaOut::tmrSetTempo(int )
00478 {
00479 #else
00480 void AlsaOut::tmrSetTempo(int v)
00481 {
00482 eventInit(di->ev);
00483 di->ev->type = SND_SEQ_EVENT_TEMPO;
00484 snd_seq_ev_set_direct(di->ev);
00485 di->ev->data.queue.queue = di->queue;
00486 di->ev->data.queue.param.value = v;
00487 di->ev->dest.client = SND_SEQ_CLIENT_SYSTEM;
00488 di->ev->dest.port = SND_SEQ_PORT_SYSTEM_TIMER;
00489 snd_seq_event_output_direct(di->handle, di->ev);
00490 #ifdef MIDIOUTDEBUG
00491 printfdebug("SETTEMPO >\t tempo: %d\n",v);
00492 #endif
00493 #endif
00494 }
00495
00496 #ifndef HAVE_ALSA_SEQ
00497 void AlsaOut::sync(int )
00498 {
00499 #else
00500 void AlsaOut::sync(int i)
00501 {
00502 if (i==1)
00503 {
00504 snd_seq_flush_output(di->handle);
00505 }
00506
00507 if (di->timerStarted)
00508 {
00509 eventInit(di->ev);
00510 di->ev->dest = *di->src;
00511 eventSend(di->ev);
00512 snd_seq_flush_output(di->handle);
00513 snd_seq_event_input(di->handle,&di->ev);
00514 }
00515
00516 #endif
00517 }
00518
00519 #ifndef HAVE_ALSA_SEQ
00520 void AlsaOut::tmrStart(int )
00521 {
00522 #else
00523 void AlsaOut::tmrStart(int tpcn)
00524 {
00525 int ret;
00526 di->timerStarted=true;
00527 di->tPCN=tpcn;
00528
00529 #ifdef HAVE_LIBASOUND2
00530 snd_seq_queue_tempo_t *queuetempo;
00531 snd_seq_queue_tempo_alloca(&queuetempo);
00532 snd_seq_queue_tempo_set_ppq(queuetempo, tpcn);
00533 snd_seq_queue_tempo_set_tempo(queuetempo, 60*1000000/120);
00534 ret = snd_seq_set_queue_tempo(di->handle, di->queue, queuetempo);
00535 #else
00536 snd_seq_queue_tempo_t queuetempo;
00537 memset(&queuetempo, 0, sizeof(queuetempo));
00538 queuetempo.queue = di->queue;
00539 queuetempo.ppq = tpcn;
00540 queuetempo.tempo = 60*1000000/120;
00541 ret = snd_seq_set_queue_tempo(di->handle, di->queue, &queuetempo);
00542 #endif
00543
00544 timerEventSend(SND_SEQ_EVENT_START);
00545 snd_seq_start_queue(di->handle,di->queue,NULL);
00546 #endif
00547 }
00548
00549 void AlsaOut::tmrStop(void)
00550 {
00551 #ifdef HAVE_LIBASOUND
00552 di->timerStarted=false;
00553 timerEventSend(SND_SEQ_EVENT_STOP);
00554 #endif
00555 }
00556
00557 void AlsaOut::tmrContinue(void)
00558 {
00559 }
00560
00561 const char * AlsaOut::deviceName(void) const
00562 {
00563 #ifdef HAVE_LIBASOUND
00564 return di->tgtname;
00565 #else
00566 return 0L;
00567 #endif
00568 }