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572 lines
12 KiB
572 lines
12 KiB
/**************************************************************************
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alsaout.cpp - class AlsaOut which represents an alsa client/port pair
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This file is part of LibKMid 0.9.5
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Copyright (C) 2000 Antonio Larrosa Jimenez
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LibKMid's homepage : http://www.arrakis.es/~rlarrosa/libtdemid.html
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public License
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along with this library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA.
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Send comments and bug fixes to Antonio Larrosa <larrosa@kde.org>
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***************************************************************************/
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#include "alsaout.h"
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#include <unistd.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include "sndcard.h"
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#include <errno.h>
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#include <string.h>
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#include <stdlib.h>
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#include <sys/param.h>
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#include "midispec.h"
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#ifdef HAVE_ALSA_ASOUNDLIB_H
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# include <alsa/asoundlib.h>
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#elif defined(HAVE_SYS_ASOUNDLIB_H)
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# include <sys/asoundlib.h>
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#endif
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#ifdef HAVE_LIBASOUND2
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# define HAVE_ALSA_SEQ 1
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# define snd_seq_flush_output(x) snd_seq_drain_output(x)
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#elif defined(HAVE_LIBASOUND)
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# define HAVE_ALSA_SEQ 1
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# include <linux/asequencer.h>
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#endif
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SEQ_USE_EXTBUF();
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class AlsaOut::AlsaOutPrivate
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{
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public:
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#ifdef HAVE_ALSA_SEQ
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AlsaOutPrivate(int _client, int _port, const char *cname,const char *pname)
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{
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handle=0L;
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src=tgt=0L;
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queue=0;
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tPCN=1;
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tgtclient=_client;
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tgtport=_port;
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tgtname=new char[strlen(cname)+strlen(pname)+3];
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strcpy(tgtname, cname);
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strcat(tgtname, " ");
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strcat(tgtname, pname);
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ev=new snd_seq_event_t;
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timerStarted=false;
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}
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#else
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AlsaOutPrivate(int, int, const char *,const char *)
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{
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}
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#endif
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~AlsaOutPrivate()
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{
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#ifdef HAVE_ALSA_SEQ
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delete ev;
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delete tgtname;
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#endif
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}
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#ifdef HAVE_ALSA_SEQ
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snd_seq_t *handle;
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int client;
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int queue;
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snd_seq_addr_t *src;
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snd_seq_addr_t *tgt;
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snd_seq_event_t *ev;
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int tPCN;
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int tgtclient;
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int tgtport;
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char *tgtname;
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bool timerStarted;
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#endif
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};
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AlsaOut::AlsaOut(int d,int _client, int _port, const char *cname,const char *pname) : MidiOut (d)
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{
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di = new AlsaOutPrivate( _client, _port, cname, pname);
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seqfd = 0;
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devicetype=KMID_ALSA;
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device= d;
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volumepercentage=100;
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#ifdef HAVE_ALSA_SEQ
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// printf("%d %d %d (%s)\n",device, di->tgtclient, di->tgtport, di->tgtname);
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#endif
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_ok=1;
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}
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AlsaOut::~AlsaOut()
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{
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closeDev();
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delete di;
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}
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void AlsaOut::openDev (int)
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{
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#ifndef HAVE_ALSA_SEQ
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return;
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#else
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_ok=1;
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#ifdef HAVE_LIBASOUND2
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if (snd_seq_open(&di->handle, "hw", SND_SEQ_OPEN_DUPLEX, 0) < 0)
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fprintf(stderr, "Couldn't open sequencer: %s", snd_strerror(errno));
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#else
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if (snd_seq_open(&di->handle, SND_SEQ_OPEN) < 0)
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fprintf(stderr, "Couldn't open sequencer: %s", snd_strerror(errno));
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#endif
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di->queue = snd_seq_alloc_queue(di->handle);
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if (di->queue < 0) {fprintf(stderr, "Couldn't allocate queue"); return; };
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di->client = snd_seq_client_id(di->handle);
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if (di->client < 0) {fprintf(stderr, "Couldn't get client id"); return; };
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di->tgt = new snd_seq_addr_t;
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di->tgt->client=di->tgtclient;
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di->tgt->port=di->tgtport;
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di->src = new snd_seq_addr_t;
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di->src->client = di->client;
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int port = snd_seq_create_simple_port(di->handle, NULL,
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SND_SEQ_PORT_CAP_WRITE | SND_SEQ_PORT_CAP_SUBS_WRITE
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| SND_SEQ_PORT_CAP_READ, SND_SEQ_PORT_TYPE_MIDI_GENERIC);
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if ( port < 0 )
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{
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delete di->src;
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delete di->tgt;
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di->src=0;
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di->tgt=0;
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_ok=0;
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time=0;
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snd_seq_free_queue(di->handle, di->queue);
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snd_seq_close(di->handle);
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fprintf(stderr, "Cannot connect to %d:%d\n",di->tgtclient,di->tgtport);
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return;
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}
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di->src->port = port;
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int r=snd_seq_connect_to(di->handle, di->src->port, di->tgt->client, di->tgt->port);
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if (r < 0) { _ok=0; fprintf(stderr, "Cannot connect to %d:%d\n",di->tgtclient,di->tgtport); }
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time=0;
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#endif
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}
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void AlsaOut::closeDev (void)
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{
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if (!ok()) return;
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#ifdef HAVE_ALSA_SEQ
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if (di->handle)
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{
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if (di->src)
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{
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snd_seq_delete_simple_port(di->handle,di->src->port);
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delete di->src;
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di->src=0;
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}
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if (di->tgt)
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{
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delete di->tgt;
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di->tgt=0;
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}
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if (di->queue)
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{
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snd_seq_free_queue(di->handle, di->queue);
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snd_seq_close(di->handle);
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}
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di->handle=0;
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}
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#endif
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}
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void AlsaOut::initDev (void)
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{
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#ifdef HAVE_ALSA_SEQ
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int chn;
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if (!ok()) return;
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uchar gm_reset[5]={0x7e, 0x7f, 0x09, 0x01, 0xf7};
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sysex(gm_reset, sizeof(gm_reset));
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for (chn=0;chn<16;chn++)
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{
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chnmute[chn]=0;
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if (chn!=9) chnPatchChange(chn,0);
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chnPressure(chn,64);
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chnPitchBender(chn, 0x00, 0x40);
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chnController(chn, CTL_MAIN_VOLUME,110*volumepercentage);
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chnController(chn, CTL_EXT_EFF_DEPTH, 0);
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chnController(chn, CTL_CHORUS_DEPTH, 0);
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chnController(chn, 0x4a, 127);
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}
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#endif
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}
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#ifdef HAVE_ALSA_SEQ
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void AlsaOut::eventInit(snd_seq_event_t *ev)
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{
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snd_seq_ev_clear(ev);
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snd_seq_real_time_t tmp;
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tmp.tv_sec=(time)/1000;
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tmp.tv_nsec=(time%1000)*1000000;
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// printf("time : %d %d %d\n",(int)time,(int)tmp.tv_sec, (int)tmp.tv_nsec);
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if (!di->src) { fprintf(stderr,"AlsaOut::eventInit : no source\n"); return; }
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ev->source = *di->src;
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if (!di->tgt) { fprintf(stderr,"AlsaOut::eventInit : no target\n"); return; }
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ev->dest = *di->tgt;
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snd_seq_ev_schedule_real(ev, di->queue, 0, &tmp);
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}
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void AlsaOut::eventSend(snd_seq_event_t *ev)
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{
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/*int err = */ snd_seq_event_output(di->handle, ev);
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/* if (err < 0)
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return;
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*/
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//#ifndef SND_SEQ_IOCTL_GET_CLIENT_POOL
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/*
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* If this is not defined then block mode writes will not be
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* working correctly. Therefore loop until all events are flushed
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* out.
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*/
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/* err = 0;
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do {
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err = snd_seq_flush_output(di->handle);
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if (err > 0)
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usleep(2000);
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} while (err > 0);
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#endif
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return ;
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*/
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}
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void AlsaOut::timerEventSend(int type)
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{
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snd_seq_event_t ev;
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ev.queue = di->queue;
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ev.dest.client = SND_SEQ_CLIENT_SYSTEM;
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ev.dest.port = SND_SEQ_PORT_SYSTEM_TIMER;
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ev.data.queue.queue = di->queue;
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ev.flags = SND_SEQ_TIME_STAMP_REAL | SND_SEQ_TIME_MODE_REL;
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ev.time.time.tv_sec = 0;
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ev.time.time.tv_nsec = 0;
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ev.type = type;
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snd_seq_event_output(di->handle, &ev);
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snd_seq_flush_output(di->handle);
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}
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#endif // HAVE_ALSA_SEQ
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#ifndef HAVE_ALSA_SEQ
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void AlsaOut::noteOn (uchar , uchar , uchar )
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{
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#else
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void AlsaOut::noteOn (uchar chn, uchar note, uchar vel)
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{
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if (vel==0)
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{
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noteOff(chn,note,vel);
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}
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else
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{
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eventInit(di->ev);
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snd_seq_ev_set_noteon(di->ev,map->channel(chn), map->key(chn,chnpatch[chn],note), vel);
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eventSend(di->ev);
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}
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#endif
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#ifdef MIDIOUTDEBUG
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printfdebug("Note ON >\t chn : %d\tnote : %d\tvel: %d\n",chn,note,vel);
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#endif
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}
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#ifndef HAVE_ALSA_SEQ
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void AlsaOut::noteOff (uchar , uchar , uchar )
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{
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#else
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void AlsaOut::noteOff (uchar chn, uchar note, uchar vel)
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{
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eventInit(di->ev);
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snd_seq_ev_set_noteoff(di->ev,map->channel(chn), map->key(chn,chnpatch[chn],note), vel);
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eventSend(di->ev);
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#endif
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#ifdef MIDIOUTDEBUG
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printfdebug("Note OFF >\t chn : %d\tnote : %d\tvel: %d\n",chn,note,vel);
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#endif
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}
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#ifndef HAVE_ALSA_SEQ
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void AlsaOut::keyPressure (uchar , uchar , uchar )
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{
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#else
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void AlsaOut::keyPressure (uchar chn, uchar note, uchar vel)
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{
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eventInit(di->ev);
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snd_seq_ev_set_keypress(di->ev,map->channel(chn), map->key(chn,chnpatch[chn],note), vel);
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eventSend(di->ev);
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#endif
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}
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#ifndef HAVE_ALSA_SEQ
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void AlsaOut::chnPatchChange (uchar , uchar )
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{
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#else
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void AlsaOut::chnPatchChange (uchar chn, uchar patch)
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{
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#ifdef MIDIOUTDEBUG
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printfdebug("PATCHCHANGE [%d->%d] %d -> %d\n",
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chn,map->channel(chn),patch,map->patch(chn,patch));
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#endif
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eventInit(di->ev);
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snd_seq_ev_set_pgmchange(di->ev,map->channel(chn), map->patch(chn,patch));
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eventSend(di->ev);
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chnpatch[chn]=patch;
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#endif
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}
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#ifndef HAVE_ALSA_SEQ
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void AlsaOut::chnPressure (uchar , uchar )
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{
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#else
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void AlsaOut::chnPressure (uchar chn, uchar vel)
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{
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eventInit(di->ev);
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snd_seq_ev_set_chanpress(di->ev,map->channel(chn), vel);
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eventSend(di->ev);
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chnpressure[chn]=vel;
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#endif
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}
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#ifndef HAVE_ALSA_SEQ
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void AlsaOut::chnPitchBender(uchar ,uchar , uchar )
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{
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#else
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void AlsaOut::chnPitchBender(uchar chn,uchar lsb, uchar msb)
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{
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map->pitchBender(chn,lsb,msb);
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chnbender[chn]=((short)msb<<7) | (lsb & 0x7F);
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chnbender[chn]=chnbender[chn]-0x2000;
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eventInit(di->ev);
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snd_seq_ev_set_pitchbend(di->ev,map->channel(chn), chnbender[chn]);
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eventSend(di->ev);
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#endif
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}
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#ifndef HAVE_ALSA_SEQ
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void AlsaOut::chnController (uchar , uchar , uchar )
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{
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#else
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void AlsaOut::chnController (uchar chn, uchar ctl, uchar v)
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{
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map->controller(chn,ctl,v);
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if ((ctl==11)||(ctl==7))
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{
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v=(v*volumepercentage)/100;
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if (v>127) v=127;
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}
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eventInit(di->ev);
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snd_seq_ev_set_controller(di->ev,map->channel(chn), ctl, v);
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eventSend(di->ev);
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chncontroller[chn][ctl]=v;
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#endif
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}
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#ifndef HAVE_ALSA_SEQ
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void AlsaOut::sysex(uchar *, ulong )
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{
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#else
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void AlsaOut::sysex(uchar *data, ulong size)
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{
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eventInit(di->ev);
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snd_seq_ev_set_sysex(di->ev, size, data);
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eventSend(di->ev);
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#endif
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#ifdef MIDIOUTDEBUG
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printfdebug("sysex\n");
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#endif
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}
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#ifndef HAVE_ALSA_SEQ
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void AlsaOut::channelSilence (uchar )
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{
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#else
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void AlsaOut::channelSilence (uchar chn)
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{
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uchar i;
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for ( i=0; i<127; i++)
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{
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noteOff(chn,i,0);
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}
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#endif
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}
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#ifndef HAVE_ALSA_SEQ
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void AlsaOut::channelMute(uchar , int )
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{
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#else
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void AlsaOut::channelMute(uchar chn, int a)
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{
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if (a==1)
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{
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chnmute[chn]=a;
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channelSilence(chn);
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}
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else if (a==0)
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{
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chnmute[chn]=a;
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}
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/* else ignore the call to this procedure */
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#endif
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}
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void AlsaOut::seqbuf_dump (void)
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{
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printf("You shouldn't be here.\n");
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}
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void AlsaOut::seqbuf_clean(void)
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{
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printf("You shouldn't be here neither.\n");
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}
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void AlsaOut::wait(double ticks)
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{
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// SEQ_WAIT_TIME(((int)(ticks/convertrate)));
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time=static_cast<long int>(ticks);
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#ifdef MIDIOUTDEBUG
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printfdebug("Wait >\t ticks: %g\n",ticks);
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#endif
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}
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#ifndef HAVE_ALSA_SEQ
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void AlsaOut::tmrSetTempo(int )
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{
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#else
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void AlsaOut::tmrSetTempo(int v)
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{
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eventInit(di->ev);
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di->ev->type = SND_SEQ_EVENT_TEMPO;
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snd_seq_ev_set_direct(di->ev);
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di->ev->data.queue.queue = di->queue;
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di->ev->data.queue.param.value = v;
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di->ev->dest.client = SND_SEQ_CLIENT_SYSTEM;
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di->ev->dest.port = SND_SEQ_PORT_SYSTEM_TIMER;
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snd_seq_event_output_direct(di->handle, di->ev);
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#ifdef MIDIOUTDEBUG
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printfdebug("SETTEMPO >\t tempo: %d\n",v);
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#endif
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#endif
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}
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#ifndef HAVE_ALSA_SEQ
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void AlsaOut::sync(int )
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{
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#else
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void AlsaOut::sync(int i)
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{
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if (i==1)
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{
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snd_seq_flush_output(di->handle);
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}
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if (di->timerStarted && di->src)
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{
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eventInit(di->ev);
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di->ev->dest = *di->src;
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eventSend(di->ev);
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snd_seq_flush_output(di->handle);
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snd_seq_event_input(di->handle,&di->ev);
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}
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#endif
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}
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#ifndef HAVE_ALSA_SEQ
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void AlsaOut::tmrStart(int )
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{
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#else
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void AlsaOut::tmrStart(int tpcn)
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{
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int ret;
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di->timerStarted=true;
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di->tPCN=tpcn;
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#ifdef HAVE_LIBASOUND2
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snd_seq_queue_tempo_t *queuetempo;
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snd_seq_queue_tempo_alloca(&queuetempo);
|
|
snd_seq_queue_tempo_set_ppq(queuetempo, tpcn);
|
|
snd_seq_queue_tempo_set_tempo(queuetempo, 60*1000000/120);
|
|
ret = snd_seq_set_queue_tempo(di->handle, di->queue, queuetempo);
|
|
#else
|
|
snd_seq_queue_tempo_t queuetempo;
|
|
memset(&queuetempo, 0, sizeof(queuetempo));
|
|
queuetempo.queue = di->queue;
|
|
queuetempo.ppq = tpcn;
|
|
queuetempo.tempo = 60*1000000/120;
|
|
ret = snd_seq_set_queue_tempo(di->handle, di->queue, &queuetempo);
|
|
#endif
|
|
|
|
timerEventSend(SND_SEQ_EVENT_START);
|
|
snd_seq_start_queue(di->handle,di->queue,NULL);
|
|
#endif
|
|
}
|
|
|
|
void AlsaOut::tmrStop(void)
|
|
{
|
|
#ifdef HAVE_ALSA_SEQ
|
|
di->timerStarted=false;
|
|
timerEventSend(SND_SEQ_EVENT_STOP);
|
|
#endif
|
|
}
|
|
|
|
void AlsaOut::tmrContinue(void)
|
|
{
|
|
}
|
|
|
|
const char * AlsaOut::deviceName(void) const
|
|
{
|
|
#ifdef HAVE_ALSA_SEQ
|
|
return di->tgtname;
|
|
#else
|
|
return 0L;
|
|
#endif
|
|
}
|