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-rw-r--r--libkmid/midimapper.cc456
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diff --git a/libkmid/midimapper.cc b/libkmid/midimapper.cc
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--- a/libkmid/midimapper.cc
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-/**************************************************************************
-
- midimapper.cc - The midi mapper object
- This file is part of LibKMid 0.9.5
- Copyright (C) 1997,98,99,2000 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 <[email protected]>
-
-***************************************************************************/
-#include "midimapper.h"
-#include <stdio.h>
-#include <string.h>
-#include <stdlib.h>
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-
-MidiMapper::MidiMapper(const char *name)
-{
- _ok=1;
- keymaps=NULL;
- _filename=NULL;
- mapPitchBender=0;
- mapExpressionToVolumeEvents=0;
- if ((name==NULL)||(name[0]==0))
- {
- deallocateMaps();
- int i;
- for (i=0;i<16;i++)
- {
- channelmap[i]=i;
- channelPatchForced[i]=-1;
- }
- for (i=0;i<128;i++) patchmap[i]=i;
- }
- else
- loadFile(name);
-}
-
-MidiMapper::~MidiMapper()
-{
- if (_filename) free(_filename);
- deallocateMaps();
-}
-
-void MidiMapper::deallocateMaps(void)
-{
- int i;
- for (i=0;i<16;i++) channelKeymap[i]=NULL;
- for (i=0;i<128;i++) patchKeymap[i]=NULL;
- Keymap *km;
- while (keymaps!=NULL)
- {
- km=keymaps->next;
- delete keymaps;
- keymaps=km;
- }
-}
-
-void MidiMapper::getValue(char *s,char *v)
-{
- char *c=s;
- while ((*c!=0)&&(*c!='=')) c++;
- if (*c==0) v[0]=0;
- else
- {
- c++;
- while (*c!=0)
- {
- *v=*c;
- c++;v++;
- }
- *v=0;
- }
-}
-
-void MidiMapper::removeSpaces(char *s)
-{
- char *a=s;
- while ((*a!=0)&&(*a==' ')) a++;
- if (*a==0) {*s=0;return;};
- while (*a!=0)
- {
- while ((*a!=0)&&(*a!=' ')&&(*a!=10)&&(*a!=13))
- {
- *s=*a;
- s++;
- a++;
- }
- while ((*a!=0)&&((*a==' ')||(*a==10)||(*a==13))) a++;
- *s=' ';s++;
- if (*a==0) {*s=0;return;};
- }
- *s=0;
-
-}
-
-int MidiMapper::countWords(char *s)
-{
- int c=0;
- while (*s!=0)
- {
- if (*s==' ') c++;
- s++;
- }
- return c;
-}
-
-void MidiMapper::getWord(char *t,char *s,int w)
-{
- int i=0;
- *t=0;
- while ((*s!=0)&&(i<w))
- {
- if (*s==' ') i++;
- s++;
- }
- while ((*s!=0)&&(*s!=' ')&&(*s!=10)&&(*s!=13))
- {
- *t=*s;
- t++;s++;
- }
- *t=0;
-}
-
-
-void MidiMapper::loadFile(const char *name)
-{
- _ok=1;
- FILE *fh = fopen(name,"rt");
- if ( fh == NULL ) { _ok = -1; return; };
- char s[101];
- s[0] = 0;
- if ( _filename != NULL ) free(_filename);
- _filename = strdup(name);
-#ifdef MIDIMAPPERDEBUG
- printf("Loading mapper ...\n");
-#endif
- while (!feof(fh))
- {
- s[0]=0;
- while ((!feof(fh))&&((s[0]==0)||(s[0]=='#'))) fgets(s,100,fh);
- if (strncmp(s,"DEFINE",6)==0)
- {
- if (strncmp(&s[7],"PATCHMAP",8)==0) readPatchmap(fh);
- else
- if (strncmp(&s[7],"KEYMAP",6)==0) readKeymap(fh,s);
- else
- if (strncmp(&s[7],"CHANNELMAP",10)==0) readChannelmap(fh);
- else
- {
- printf("ERROR: Unknown DEFINE line in map file\n");
- _ok=0;
- }
- if (_ok==0)
- {
- printf("The midi map file will be ignored\n");
- fclose(fh);
- return;
- }
- }
- else if (strncmp(s,"OPTIONS",7)==0) readOptions(fh);
- }
- fclose(fh);
-}
-
-MidiMapper::Keymap *MidiMapper::createKeymap(char *name,uchar use_same_note,uchar note)
-{
- Keymap *km=new Keymap;
- strncpy(km->name, name, KM_NAME_SIZE);
- km->name[KM_NAME_SIZE - 1] = 0;
-
- int i;
- if (use_same_note==1)
- {
- for (i=0;i<128;i++)
- km->key[i]=note;
- }
- else
- {
- for (i=0;i<128;i++)
- km->key[i]=i;
- }
- addKeymap(km);
- return km;
-}
-
-void MidiMapper::addKeymap(Keymap *newkm)
-{
- Keymap *km=keymaps;
- if (keymaps==NULL)
- {
- keymaps=newkm;
- newkm->next=NULL;
- return;
- }
- while (km->next!=NULL) km=km->next;
- km->next=newkm;
- newkm->next=NULL;
- return;
-}
-
-MidiMapper::Keymap *MidiMapper::keymap(char *n)
-{
- Keymap *km=keymaps;
- while ((km!=NULL)&&(strcmp(km->name,n)!=0)) km=km->next;
- return km;
-}
-
-void MidiMapper::readOptions(FILE *fh)
-{
-#ifdef MIDIMAPPERDEBUG
- printf("Loading Options ... \n");
-#endif
- char s[101];
- char v[101];
- char t[101];
- int fin=0;
- mapPitchBender=0;
- while (!fin)
- {
- s[0]=0;
- while ((s[0]==0)||(s[0]=='#')) fgets(s,100,fh);
- if (strncmp(s,"PitchBenderRatio",16)==0)
- {
- getValue(s,v);
- removeSpaces(v);
- getWord(t,v,0);
- mapPitchBender=1;
- pitchBenderRatio=atoi(t);
- }
- else if (strncmp(s,"MapExpressionToVolumeEvents",27)==0) mapExpressionToVolumeEvents=1;
- else if (strncmp(s,"END",3)==0)
- {
- fin=1;
- }
- else
- {
- printf("ERROR: Invalid option in OPTIONS section of map file : (%s)\n",s);
- _ok=0;
- return;
- }
- }
-}
-
-void MidiMapper::readPatchmap(FILE *fh)
-{
- char s[101];
- char v[101];
- char t[101];
- char name[256]; /* Longer than t and 'AllKeysTo' */
- int i=0;
- int j,w;
-#ifdef MIDIMAPPERDEBUG
- printf("Loading Patch map ... \n");
-#endif
- while (i<128)
- {
- s[0]=0;
- while ((s[0]==0)||(s[0]=='#')) fgets(s,100,fh);
- getValue(s,v);
- removeSpaces(v);
- w=countWords(v);
- j=0;
- patchKeymap[i]=NULL;
- patchmap[i]=i;
- while (j<w)
- {
- getWord(t,v,j);
- if (strcmp(t,"AllKeysTo")==0)
- {
- j++;
- if (j>=w)
- {
- printf("ERROR: Invalid option in PATCHMAP section of map file\n");
- _ok=0;
- return;
- }
- getWord(t,v,j);
- sprintf(name,"AllKeysTo%s",t);
- patchKeymap[i]=createKeymap(name,1,atoi(t));
- }
- else
- {
- patchmap[i]=atoi(t);
- }
- j++;
- }
- i++;
- }
- s[0]=0;
- while ((s[0]==0)||(s[0]=='#')||(s[0]==10)||(s[0]==13)) fgets(s,100,fh);
- if (strncmp(s,"END",3)!=0)
- {
- printf("ERROR: End of section not found in map file\n");
- _ok=0;
- return;
- }
-}
-
-void MidiMapper::readKeymap(FILE *fh,char *first_line)
-{
- char s[101];
- char v[101];
-#ifdef MIDIMAPPERDEBUG
- printf("Loading Key map ... %s",first_line);
-#endif
- removeSpaces(first_line);
- getWord(v,first_line,2);
- Keymap *km=new Keymap;
- strncpy(km->name, v, KM_NAME_SIZE);
- km->name[KM_NAME_SIZE - 1] = 0;
-
- int i=0;
- while (i<128)
- {
- s[0]=0;
- while ((s[0]==0)||(s[0]=='#')) fgets(s,100,fh);
- getValue(s,v);
- removeSpaces(v);
- km->key[i]=atoi(v);
- i++;
- }
- s[0]=0;
- while ((s[0]==0)||(s[0]=='#')||(s[0]==10)||(s[0]==13)) fgets(s,100,fh);
- if (strncmp(s,"END",3)!=0)
- {
- printf("ERROR: End of section not found in map file\n");
- _ok=0;
- return;
- }
- addKeymap(km);
-}
-
-void MidiMapper::readChannelmap(FILE *fh)
-{
- char s[101];
- char v[101];
- char t[101];
- int i=0;
- int w,j;
-#ifdef MIDIMAPPERDEBUG
- printf("Loading Channel map ... \n");
-#endif
- while (i<16)
- {
- s[0]=0;
- while ((s[0]==0)||(s[0]=='#')) fgets(s,100,fh);
- getValue(s,v);
- removeSpaces(v);
- w=countWords(v);
- j=0;
- channelKeymap[i]=NULL;
- channelPatchForced[i]=-1;
- channelmap[i]=i;
- while (j<w)
- {
- getWord(t,v,j);
- if (strcmp(t,"Keymap")==0)
- {
- j++;
- if (j>=w)
- {
- printf("ERROR: Invalid option in CHANNELMAP section of map file\n");
- _ok=0;
- return;
- }
- getWord(t,v,j);
- channelKeymap[i]=keymap(t);
- }
- else if (strcmp(t,"ForcePatch")==0)
- {
- j++;
- if (j>=w)
- {
- printf("ERROR: Invalid option in CHANNELMAP section of map file\n");
- _ok=0;
- return;
- }
- getWord(t,v,j);
- channelPatchForced[i]=atoi(t);
- }
- else
- {
- channelmap[i]=atoi(t);
- }
- j++;
- }
- i++;
- }
- s[0]=0;
- while ((s[0]==0)||(s[0]=='#')||(s[0]==10)||(s[0]==13)) fgets(s,100,fh);
- if (strncmp(s,"END",3)!=0)
- {
- printf("END of section not found in map file\n");
- _ok=0;
- return;
- }
-
-}
-
-const char *MidiMapper::filename(void)
-{
- return (_filename)? _filename : "";
-}
-
-uchar MidiMapper::key(uchar chn,uchar pgm, uchar note)
-{
- uchar notemapped=note;
- if (patchKeymap[pgm]!=NULL) notemapped=patchKeymap[pgm]->key[note];
- if (channelKeymap[chn]!=NULL) notemapped=channelKeymap[chn]->key[note];
- return notemapped;
-}
-
-uchar MidiMapper::patch(uchar chn,uchar pgm)
-{
- return (channelPatchForced[chn] == -1) ?
- patchmap[pgm] : (uchar)channelPatchForced[chn] ;
-}
-
-void MidiMapper::pitchBender(uchar ,uchar &lsb,uchar &msb)
-{
- if (mapPitchBender)
- {
- short pbs=((short)msb<<7) | (lsb & 0x7F);
- pbs=pbs-0x2000;
- short pbs2=(((long)pbs*pitchBenderRatio)/4096);
-#ifdef MIDIMAPPERDEBUG
- printf("Pitch Bender (%d): %d -> %d \n",chn,pbs,pbs2);
-#endif
- pbs2=pbs2+0x2000;
- lsb=pbs2 & 0x7F;
- msb=(pbs2 >> 7)&0x7F;
- }
-}
-
-void MidiMapper::controller(uchar ,uchar &ctl, uchar &)
-{
- if ((mapExpressionToVolumeEvents)&&(ctl==11)) ctl=7;
-}
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