alsaout.cc
00001 /************************************************************************** 00002 00003 alsaout.cc - class AlsaOut which represents an alsa client/port pair 00004 This file is part of LibKMid 0.9.5 00005 Copyright (C) 2000 Antonio Larrosa Jimenez 00006 LibKMid's homepage : http://www.arrakis.es/~rlarrosa/libkmid.html 00007 00008 This library is free software; you can redistribute it and/or 00009 modify it under the terms of the GNU Library General Public 00010 License as published by the Free Software Foundation; either 00011 version 2 of the License, or (at your option) any later version. 00012 00013 This library is distributed in the hope that it will be useful, 00014 but WITHOUT ANY WARRANTY; without even the implied warranty of 00015 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00016 Library General Public License for more details. 00017 00018 You should have received a copy of the GNU Library General Public License 00019 along with this library; see the file COPYING.LIB. If not, write to 00020 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 00021 Boston, MA 02110-1301, USA. 00022 00023 Send comments and bug fixes to Antonio Larrosa <larrosa@kde.org> 00024 00025 ***************************************************************************/ 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 // printf("%d %d %d (%s)\n",device, di->tgtclient, di->tgtport, di->tgtname); 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 di->src=0; 00192 } 00193 if (di->tgt) 00194 { 00195 delete di->tgt; 00196 di->tgt=0; 00197 } 00198 if (di->queue) 00199 { 00200 snd_seq_free_queue(di->handle, di->queue); 00201 snd_seq_close(di->handle); 00202 } 00203 di->handle=0; 00204 } 00205 00206 #endif 00207 } 00208 00209 void AlsaOut::initDev (void) 00210 { 00211 #ifdef HAVE_ALSA_SEQ 00212 int chn; 00213 if (!ok()) return; 00214 uchar gm_reset[5]={0x7e, 0x7f, 0x09, 0x01, 0xf7}; 00215 sysex(gm_reset, sizeof(gm_reset)); 00216 for (chn=0;chn<16;chn++) 00217 { 00218 chnmute[chn]=0; 00219 if (chn!=9) chnPatchChange(chn,0); 00220 chnPressure(chn,64); 00221 chnPitchBender(chn, 0x00, 0x40); 00222 chnController(chn, CTL_MAIN_VOLUME,110*volumepercentage); 00223 chnController(chn, CTL_EXT_EFF_DEPTH, 0); 00224 chnController(chn, CTL_CHORUS_DEPTH, 0); 00225 chnController(chn, 0x4a, 127); 00226 } 00227 #endif 00228 } 00229 00230 #ifdef HAVE_ALSA_SEQ 00231 void AlsaOut::eventInit(snd_seq_event_t *ev) 00232 { 00233 snd_seq_ev_clear(ev); 00234 snd_seq_real_time_t tmp; 00235 tmp.tv_sec=(time)/1000; 00236 tmp.tv_nsec=(time%1000)*1000000; 00237 // printf("time : %d %d %d\n",(int)time,(int)tmp.tv_sec, (int)tmp.tv_nsec); 00238 if (!di->src) { fprintf(stderr,"AlsaOut::eventInit : no source\n"); return; } 00239 ev->source = *di->src; 00240 if (!di->tgt) { fprintf(stderr,"AlsaOut::eventInit : no target\n"); return; } 00241 ev->dest = *di->tgt; 00242 00243 snd_seq_ev_schedule_real(ev, di->queue, 0, &tmp); 00244 } 00245 00246 void AlsaOut::eventSend(snd_seq_event_t *ev) 00247 { 00248 /*int err = */ snd_seq_event_output(di->handle, ev); 00249 /* if (err < 0) 00250 return; 00251 */ 00252 //#ifndef SND_SEQ_IOCTL_GET_CLIENT_POOL 00253 /* 00254 * If this is not defined then block mode writes will not be 00255 * working correctly. Therefore loop until all events are flushed 00256 * out. 00257 */ 00258 /* err = 0; 00259 do { 00260 err = snd_seq_flush_output(di->handle); 00261 if (err > 0) 00262 usleep(2000); 00263 } while (err > 0); 00264 00265 #endif 00266 00267 return ; 00268 */ 00269 } 00270 00271 void AlsaOut::timerEventSend(int type) 00272 { 00273 snd_seq_event_t ev; 00274 00275 ev.queue = di->queue; 00276 ev.dest.client = SND_SEQ_CLIENT_SYSTEM; 00277 ev.dest.port = SND_SEQ_PORT_SYSTEM_TIMER; 00278 00279 ev.data.queue.queue = di->queue; 00280 00281 ev.flags = SND_SEQ_TIME_STAMP_REAL | SND_SEQ_TIME_MODE_REL; 00282 ev.time.time.tv_sec = 0; 00283 ev.time.time.tv_nsec = 0; 00284 00285 ev.type = type; 00286 00287 snd_seq_event_output(di->handle, &ev); 00288 snd_seq_flush_output(di->handle); 00289 } 00290 00291 #endif // HAVE_ALSA_SEQ 00292 00293 #ifndef HAVE_ALSA_SEQ 00294 void AlsaOut::noteOn (uchar , uchar , uchar ) 00295 { 00296 #else 00297 void AlsaOut::noteOn (uchar chn, uchar note, uchar vel) 00298 { 00299 if (vel==0) 00300 { 00301 noteOff(chn,note,vel); 00302 } 00303 else 00304 { 00305 eventInit(di->ev); 00306 snd_seq_ev_set_noteon(di->ev,map->channel(chn), map->key(chn,chnpatch[chn],note), vel); 00307 eventSend(di->ev); 00308 } 00309 #endif 00310 #ifdef MIDIOUTDEBUG 00311 printfdebug("Note ON >\t chn : %d\tnote : %d\tvel: %d\n",chn,note,vel); 00312 #endif 00313 } 00314 00315 #ifndef HAVE_ALSA_SEQ 00316 void AlsaOut::noteOff (uchar , uchar , uchar ) 00317 { 00318 #else 00319 void AlsaOut::noteOff (uchar chn, uchar note, uchar vel) 00320 { 00321 eventInit(di->ev); 00322 snd_seq_ev_set_noteoff(di->ev,map->channel(chn), map->key(chn,chnpatch[chn],note), vel); 00323 eventSend(di->ev); 00324 #endif 00325 #ifdef MIDIOUTDEBUG 00326 printfdebug("Note OFF >\t chn : %d\tnote : %d\tvel: %d\n",chn,note,vel); 00327 #endif 00328 } 00329 00330 #ifndef HAVE_ALSA_SEQ 00331 void AlsaOut::keyPressure (uchar , uchar , uchar ) 00332 { 00333 #else 00334 void AlsaOut::keyPressure (uchar chn, uchar note, uchar vel) 00335 { 00336 eventInit(di->ev); 00337 snd_seq_ev_set_keypress(di->ev,map->channel(chn), map->key(chn,chnpatch[chn],note), vel); 00338 eventSend(di->ev); 00339 #endif 00340 } 00341 00342 #ifndef HAVE_ALSA_SEQ 00343 void AlsaOut::chnPatchChange (uchar , uchar ) 00344 { 00345 #else 00346 void AlsaOut::chnPatchChange (uchar chn, uchar patch) 00347 { 00348 #ifdef MIDIOUTDEBUG 00349 printfdebug("PATCHCHANGE [%d->%d] %d -> %d\n", 00350 chn,map->channel(chn),patch,map->patch(chn,patch)); 00351 #endif 00352 eventInit(di->ev); 00353 snd_seq_ev_set_pgmchange(di->ev,map->channel(chn), map->patch(chn,patch)); 00354 eventSend(di->ev); 00355 chnpatch[chn]=patch; 00356 #endif 00357 } 00358 00359 #ifndef HAVE_ALSA_SEQ 00360 void AlsaOut::chnPressure (uchar , uchar ) 00361 { 00362 #else 00363 void AlsaOut::chnPressure (uchar chn, uchar vel) 00364 { 00365 eventInit(di->ev); 00366 snd_seq_ev_set_chanpress(di->ev,map->channel(chn), vel); 00367 eventSend(di->ev); 00368 00369 chnpressure[chn]=vel; 00370 #endif 00371 } 00372 00373 #ifndef HAVE_ALSA_SEQ 00374 void AlsaOut::chnPitchBender(uchar ,uchar , uchar ) 00375 { 00376 #else 00377 void AlsaOut::chnPitchBender(uchar chn,uchar lsb, uchar msb) 00378 { 00379 map->pitchBender(chn,lsb,msb); 00380 chnbender[chn]=((short)msb<<7) | (lsb & 0x7F); 00381 chnbender[chn]=chnbender[chn]-0x2000; 00382 00383 eventInit(di->ev); 00384 snd_seq_ev_set_pitchbend(di->ev,map->channel(chn), chnbender[chn]); 00385 eventSend(di->ev); 00386 #endif 00387 } 00388 00389 #ifndef HAVE_ALSA_SEQ 00390 void AlsaOut::chnController (uchar , uchar , uchar ) 00391 { 00392 #else 00393 void AlsaOut::chnController (uchar chn, uchar ctl, uchar v) 00394 { 00395 map->controller(chn,ctl,v); 00396 if ((ctl==11)||(ctl==7)) 00397 { 00398 v=(v*volumepercentage)/100; 00399 if (v>127) v=127; 00400 } 00401 00402 eventInit(di->ev); 00403 snd_seq_ev_set_controller(di->ev,map->channel(chn), ctl, v); 00404 eventSend(di->ev); 00405 00406 chncontroller[chn][ctl]=v; 00407 #endif 00408 } 00409 00410 #ifndef HAVE_ALSA_SEQ 00411 void AlsaOut::sysex(uchar *, ulong ) 00412 { 00413 #else 00414 void AlsaOut::sysex(uchar *data, ulong size) 00415 { 00416 eventInit(di->ev); 00417 snd_seq_ev_set_sysex(di->ev, size, data); 00418 eventSend(di->ev); 00419 #endif 00420 00421 #ifdef MIDIOUTDEBUG 00422 printfdebug("sysex\n"); 00423 #endif 00424 } 00425 00426 #ifndef HAVE_ALSA_SEQ 00427 void AlsaOut::channelSilence (uchar ) 00428 { 00429 #else 00430 void AlsaOut::channelSilence (uchar chn) 00431 { 00432 uchar i; 00433 for ( i=0; i<127; i++) 00434 { 00435 noteOff(chn,i,0); 00436 } 00437 #endif 00438 } 00439 00440 #ifndef HAVE_ALSA_SEQ 00441 void AlsaOut::channelMute(uchar , int ) 00442 { 00443 #else 00444 void AlsaOut::channelMute(uchar chn, int a) 00445 { 00446 if (a==1) 00447 { 00448 chnmute[chn]=a; 00449 channelSilence(chn); 00450 } 00451 else if (a==0) 00452 { 00453 chnmute[chn]=a; 00454 } 00455 /* else ignore the call to this procedure */ 00456 #endif 00457 } 00458 00459 void AlsaOut::seqbuf_dump (void) 00460 { 00461 printf("You shouldn't be here.\n"); 00462 } 00463 00464 void AlsaOut::seqbuf_clean(void) 00465 { 00466 printf("You shouldn't be here neither.\n"); 00467 } 00468 00469 void AlsaOut::wait(double ticks) 00470 { 00471 // SEQ_WAIT_TIME(((int)(ticks/convertrate))); 00472 time=(long int)ticks; 00473 00474 #ifdef MIDIOUTDEBUG 00475 printfdebug("Wait >\t ticks: %g\n",ticks); 00476 #endif 00477 } 00478 00479 #ifndef HAVE_ALSA_SEQ 00480 void AlsaOut::tmrSetTempo(int ) 00481 { 00482 #else 00483 void AlsaOut::tmrSetTempo(int v) 00484 { 00485 eventInit(di->ev); 00486 di->ev->type = SND_SEQ_EVENT_TEMPO; 00487 snd_seq_ev_set_direct(di->ev); 00488 di->ev->data.queue.queue = di->queue; 00489 di->ev->data.queue.param.value = v; 00490 di->ev->dest.client = SND_SEQ_CLIENT_SYSTEM; 00491 di->ev->dest.port = SND_SEQ_PORT_SYSTEM_TIMER; 00492 snd_seq_event_output_direct(di->handle, di->ev); 00493 #ifdef MIDIOUTDEBUG 00494 printfdebug("SETTEMPO >\t tempo: %d\n",v); 00495 #endif 00496 #endif 00497 } 00498 00499 #ifndef HAVE_ALSA_SEQ 00500 void AlsaOut::sync(int ) 00501 { 00502 #else 00503 void AlsaOut::sync(int i) 00504 { 00505 if (i==1) 00506 { 00507 snd_seq_flush_output(di->handle); 00508 } 00509 00510 if (di->timerStarted && di->src) 00511 { 00512 eventInit(di->ev); 00513 di->ev->dest = *di->src; 00514 eventSend(di->ev); 00515 snd_seq_flush_output(di->handle); 00516 snd_seq_event_input(di->handle,&di->ev); 00517 } 00518 00519 #endif 00520 } 00521 00522 #ifndef HAVE_ALSA_SEQ 00523 void AlsaOut::tmrStart(int ) 00524 { 00525 #else 00526 void AlsaOut::tmrStart(int tpcn) 00527 { 00528 int ret; 00529 di->timerStarted=true; 00530 di->tPCN=tpcn; 00531 00532 #ifdef HAVE_LIBASOUND2 00533 snd_seq_queue_tempo_t *queuetempo; 00534 snd_seq_queue_tempo_alloca(&queuetempo); 00535 snd_seq_queue_tempo_set_ppq(queuetempo, tpcn); 00536 snd_seq_queue_tempo_set_tempo(queuetempo, 60*1000000/120); 00537 ret = snd_seq_set_queue_tempo(di->handle, di->queue, queuetempo); 00538 #else 00539 snd_seq_queue_tempo_t queuetempo; 00540 memset(&queuetempo, 0, sizeof(queuetempo)); 00541 queuetempo.queue = di->queue; 00542 queuetempo.ppq = tpcn; 00543 queuetempo.tempo = 60*1000000/120; 00544 ret = snd_seq_set_queue_tempo(di->handle, di->queue, &queuetempo); 00545 #endif 00546 00547 timerEventSend(SND_SEQ_EVENT_START); 00548 snd_seq_start_queue(di->handle,di->queue,NULL); 00549 #endif 00550 } 00551 00552 void AlsaOut::tmrStop(void) 00553 { 00554 #ifdef HAVE_ALSA_SEQ 00555 di->timerStarted=false; 00556 timerEventSend(SND_SEQ_EVENT_STOP); 00557 #endif 00558 } 00559 00560 void AlsaOut::tmrContinue(void) 00561 { 00562 } 00563 00564 const char * AlsaOut::deviceName(void) const 00565 { 00566 #ifdef HAVE_ALSA_SEQ 00567 return di->tgtname; 00568 #else 00569 return 0L; 00570 #endif 00571 }