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-rw-r--r--libkmid/fmout.cc354
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diff --git a/libkmid/fmout.cc b/libkmid/fmout.cc
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--- a/libkmid/fmout.cc
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-/**************************************************************************
-
- fmout.cc - class fmOut which handles the /dev/sequencer device
- for fm synths
- This file is part of LibKMid 0.9.5
- Copyright (C) 1998,99,2000 Antonio Larrosa Jimenez
- LibKMid's homepage : http://www.arrakis.es/~rlarrosa/libkmid.html
-
- This library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Library General Public
- License as published by the Free Software Foundation; either
- version 2 of the License, or (at your option) any later version.
-
- This library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Library General Public License for more details.
-
- You should have received a copy of the GNU Library General Public License
- along with this library; see the file COPYING.LIB. If not, write to
- the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
- Boston, MA 02110-1301, USA.
-
- Send comments and bug fixes to Antonio Larrosa <larrosa@kde.org>
-
-***************************************************************************/
-#include "fmout.h"
-#include <unistd.h>
-#include <fcntl.h>
-#include <stdio.h>
-#include "sndcard.h"
-#include <sys/ioctl.h>
-#include <errno.h>
-#include <string.h>
-#include <sys/param.h>
-#include <stdlib.h>
-#include <limits.h>
-#include "midispec.h"
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-
-SEQ_USE_EXTBUF();
-
-FMOut::FMOut( int d, int total )
-{
- seqfd = -1;
- devicetype = KMID_FM;
- device = d;
- _ok = 1;
- // Put opl=3 for opl/3 (better quality/ 6 voices)
- // or opl=2 for fm output (less quality/ 18 voices, which is better imho) :
- opl = 2;
- // But be aware that opl=3 is not intended to be fully supported by now
-
- nvoices = total;
- vm = new VoiceManager (nvoices);
-}
-
-FMOut::~FMOut()
-{
- closeDev();
- delete vm;
- if (deleteFMPatchesDirectory)
- {
- free((char *)FMPatchesDirectory);
- deleteFMPatchesDirectory = 0;
- FMPatchesDirectory="/etc";
- }
-}
-
-void FMOut::openDev (int sqfd)
-{
-#ifdef HAVE_OSS_SUPPORT
- _ok=1;
- seqfd = sqfd;
- //vm->clearLists();
- if ( seqfd == -1 )
- {
- printfdebug("ERROR: Could not open /dev/sequencer\n");
- return;
- }
-
- loadFMPatches();
-#endif
-
-}
-
-void FMOut::closeDev (void)
-{
- if (!ok()) return;
- vm->clearLists();
- //if (seqfd>=0) close(seqfd);
- seqfd = -1;
-}
-
-void FMOut::initDev (void)
-{
-#ifdef HAVE_OSS_SUPPORT
- int chn;
- if (!ok()) return;
- uchar gm_reset[5]={0x7e, 0x7f, 0x09, 0x01, 0xf7};
- sysex(gm_reset, sizeof(gm_reset));
- for (chn=0;chn<16;chn++)
- {
- chnmute[chn]=0;
- chnPatchChange(chn,0);
- chnPressure(chn,127);
- chnPitchBender(chn, 0x00, 0x40);
- chnController(chn, CTL_MAIN_VOLUME,127);
- chnController(chn, CTL_EXT_EFF_DEPTH, 0);
- chnController(chn, CTL_CHORUS_DEPTH, 0);
- chnController(chn, 0x4a, 127);
- }
-
- if (opl==3) ioctl(seqfd, SNDCTL_FM_4OP_ENABLE, &device);
- SEQ_VOLUME_MODE(device,VOL_METHOD_LINEAR);
-
- for (int i = 0; i < nvoices; i++)
- {
- SEQ_CONTROL(device, i, SEQ_VOLMODE, VOL_METHOD_LINEAR);
- SEQ_STOP_NOTE(device, i, vm->note(i), 64);
- }
-#endif
-}
-
-void FMOut::loadFMPatches(void)
-{
-#ifdef HAVE_OSS_SUPPORT
- char patchesfile[strlen(FMPatchesDirectory)+7+1];
- char drumsfile[strlen(FMPatchesDirectory)+9+1];
- int size;
- struct sbi_instrument instr;
- char tmp[60];
- int i,j;
- for ( i=0; i<256; i++ )
- patchloaded[i] = 0;
- int stereoeffect=rand()%3;
- FILE *fh;
- int datasize;
-
- if (opl==3)
- {
- snprintf(patchesfile, sizeof(patchesfile), "%s/std.o3",FMPatchesDirectory);
- size=60;
- }
- else
- {
- snprintf(patchesfile, sizeof(patchesfile), "%s/std.sb",FMPatchesDirectory);
- size=52;
- }
- fh=fopen(patchesfile,"rb");
- if (fh==NULL) return;
-
- for (i=0;i<128;i++)
- {
- fread(tmp,size,1,fh);
- patchloaded[i]=1;
- instr.key = ((strncmp(tmp, "4OP", 3) == 0))? OPL3_PATCH : FM_PATCH;
- datasize = (strncmp(tmp, "4OP", 3) == 0)? 22 : 11;
- instr.device=device;
- instr.channel = i;
- // Let's get some stereo effect ...
- tmp[46] = (tmp[46] & 0xcf) | ((++stereoeffect)<<4);
- stereoeffect=stereoeffect%3;
- for (j=0; j<22; j++)
- instr.operators[j] = tmp[j+36];
- SEQ_WRPATCH(&instr,sizeof(instr));
- }
- fclose(fh);
-
- if (opl==3)
- {
- snprintf(drumsfile, sizeof(drumsfile), "%s/drums.o3",FMPatchesDirectory);
- }
- else
- {
- snprintf(drumsfile, sizeof(drumsfile), "%s/drums.sb",FMPatchesDirectory);
- }
-
- fh=fopen(drumsfile,"rb");
- if (fh==NULL) return;
-
- for (i=128;i<175;i++)
- {
- fread(tmp,size,1,fh);
- patchloaded[i]=1;
- instr.key = (strncmp(tmp, "4OP", 3) == 0)? OPL3_PATCH : FM_PATCH;
- datasize = (strncmp(tmp, "4OP", 3) == 0)? 22 : 11;
- instr.device=device;
- instr.channel = i;
- // Let's get some stereo effect ...
- tmp[46] = (tmp[46] & 0xcf) | ((++stereoeffect)<<4);
- stereoeffect=stereoeffect%3;
- for (j=0; j<22; j++)
- instr.operators[j] = tmp[j+36];
- SEQ_WRPATCH(&instr,sizeof(instr));
- }
- fclose(fh);
-
-#ifdef FMOUTDEBUG
- printfdebug("Patches loaded\n");
-#endif
-#endif
-}
-
-int FMOut::patch(int p)
-{
- if (patchloaded[p]==1) return p;
-#ifdef FMOUTDEBUG
- printfdebug("Not loaded %d!\n",p);
-#endif
- p=0;
- while ((p<256)&&(patchloaded[p]==0)) p++;
- return p;
-}
-
-void FMOut::noteOn (uchar chn, uchar note, uchar vel)
-{
- if (vel==0)
- {
- noteOff(chn,note,vel);
- }
- else
- {
- if (chn==PERCUSSION_CHANNEL)
- {
- if (patchloaded[note+128]==0) return;
- else
- if (patchloaded[chnpatch[chn]]==0) return;
- }
- int v=vm->allocateVoice(chn,note);
- int p;
- if (chn==PERCUSSION_CHANNEL)
- SEQ_SET_PATCH(device,v ,p=patch(note+128))
- else
- SEQ_SET_PATCH(device,v ,p=map->patch(chn,chnpatch[chn]));
- SEQ_BENDER(device, v, chnbender[chn]);
-
- SEQ_START_NOTE(device, v, note, vel);
- // SEQ_CONTROL(device, v, CTL_MAIN_VOLUME, chncontroller[chn][CTL_MAIN_VOLUME]);
-
- SEQ_CHN_PRESSURE(device, v , chnpressure[chn]);
- }
-
-#ifdef FMOUTDEBUG
- printfdebug("Note ON >\t chn : %d\tnote : %d\tvel: %d\n",chn,note,vel);
-#endif
-}
-
-void FMOut::noteOff (uchar chn, uchar note, uchar vel)
-{
- int i;
- vm->initSearch();
- while ((i=vm->search(chn,note))!=-1)
- {
- SEQ_STOP_NOTE(device, i, note, vel);
- vm->deallocateVoice(i);
- }
-
-#ifdef FMOUTDEBUG
- printfdebug("Note OFF >\t chn : %d\tnote : %d\tvel: %d\n",chn,note,vel);
-#endif
-}
-
-void FMOut::keyPressure (uchar chn, uchar note, uchar vel)
-{
- int i;
- vm->initSearch();
- while ((i=vm->search(chn,note))!=-1)
- SEQ_KEY_PRESSURE(device, i, note,vel);
-}
-
-void FMOut::chnPatchChange (uchar chn, uchar patch)
-{
- if (chn==PERCUSSION_CHANNEL) return;
- int i;
- vm->initSearch();
- while ((i=vm->search(chn))!=-1)
- SEQ_SET_PATCH(device,i,map->patch(chn,patch));
-
- chnpatch[chn]=patch;
-}
-
-void FMOut::chnPressure (uchar chn, uchar vel)
-{
- int i;
- vm->initSearch();
- while ((i=vm->search(chn))!=-1)
- SEQ_CHN_PRESSURE(device, i , vel);
-
- chnpressure[chn]=vel;
-}
-
-void FMOut::chnPitchBender(uchar chn,uchar lsb, uchar msb)
-{
- chnbender[chn]=((int)msb<<7) | (lsb & 0x7F);
-
- int i;
- vm->initSearch();
- while ((i=vm->search(chn))!=-1)
- SEQ_BENDER(device, i, chnbender[chn]);
-
-}
-
-void FMOut::chnController (uchar chn, uchar ctl, uchar v)
-{
- if ((ctl==11)||(ctl==7))
- {
- v=(v*volumepercentage)/100;
- if (v>127) v=127;
- }
- int i;
- vm->initSearch();
- while ((i=vm->search(chn))!=-1)
- SEQ_CONTROL(device, i, ctl, v);
-
- chncontroller[chn][ctl]=v;
-}
-
-void FMOut::sysex(uchar *, ulong )
-{
-
-}
-
-void FMOut::setFMPatchesDirectory(const char *dir)
-{
- if ((dir==NULL)||(dir[0]==0)) return;
- if (deleteFMPatchesDirectory)
- free((char *)FMPatchesDirectory);
-
- FMPatchesDirectory = strdup(dir);
-
- deleteFMPatchesDirectory=1;
-}
-
-void FMOut::setVolumePercentage ( int i )
-{
-#ifdef HAVE_OSS_SUPPORT
- int fd=open("/dev/mixer0",O_RDWR,0);
- if (fd==-1) return;
- int a=i*255/100;
- if (a>255) a=255;
- a=(a<<8) | a;
- if (ioctl(fd,MIXER_WRITE(SOUND_MIXER_SYNTH),&a) == -1)
- printfdebug("ERROR writing to mixer\n");
- close(fd);
-#endif
- volumepercentage=i;
-}
-
-
-const char *FMOut::FMPatchesDirectory = "/etc";
-int FMOut::deleteFMPatchesDirectory = 0;