#include "cmPrefix.h" #include "cmGlobal.h" #include "cmRpt.h" #include "cmErr.h" #include "cmCtx.h" #include "cmFile.h" #include "cmMem.h" #include "cmMallocDebug.h" #include "cmLinkedHeap.h" #include "cmTime.h" #include "cmMidi.h" #include "cmMidiFile.h" #ifdef cmBIG_ENDIAN #define mfSwap16(v) (v) #define mfSwap32(v) (v) #else #define mfSwap16(v) cmSwap16(v) #define mfSwap32(v) cmSwap32(v) #endif typedef struct { unsigned cnt; // count of track records cmMidiTrackMsg_t* base; // pointer to first track recd cmMidiTrackMsg_t* last; // pointer to last track recd } _cmMidiTrack_t; typedef struct { cmErr_t err; // this objects error object cmLHeapH_t lhH; // linked heap used for all dynamically alloc'd data space cmFileH_t fh; // cmFile handle (only used in fmMidiFileOpen() and cmMidiFileWrite()) unsigned short fmtId; // midi file type id: 0,1,2 unsigned short ticksPerQN; // ticks per quarter note or 0 if smpteFmtId is valid cmMidiByte_t smpteFmtId; // smpte format or 0 if ticksPerQN is valid cmMidiByte_t smpteTicksPerFrame; // smpte ticks per frame or 0 if ticksPerQN is valid unsigned short trkN; // track count _cmMidiTrack_t* trkV; // track vector char* fn; // file name or NULL if this object did not originate from a file unsigned msgN; // count of msg's in msgV[] cmMidiTrackMsg_t** msgV; // sorted msg list unsigned nextUid; // next available msg uid } _cmMidiFile_t; cmMidiFileH_t cmMidiFileNullHandle = cmSTATIC_NULL_HANDLE; _cmMidiFile_t* _cmMidiFileHandleToPtr( cmMidiFileH_t h ) { _cmMidiFile_t* p = (_cmMidiFile_t*)h.h; assert( p != NULL ); return p; } cmMfRC_t _cmMidiFileRead8( _cmMidiFile_t* mfp, cmMidiByte_t* p ) { if( cmFileReadUChar(mfp->fh,p,1) != kOkFileRC ) return cmErrMsg(&mfp->err,kFileFailMfRC,"MIDI byte read failed."); return kOkMfRC; } cmMfRC_t _cmMidiFileRead16( _cmMidiFile_t* mfp, unsigned short* p ) { if( cmFileReadUShort(mfp->fh,p,1) != kOkFileRC ) return cmErrMsg(&mfp->err,kFileFailMfRC,"MIDI short read failed."); *p = mfSwap16(*p); return kOkMfRC; } cmMfRC_t _cmMidiFileRead24( _cmMidiFile_t* mfp, unsigned* p ) { *p = 0; int i = 0; for(; i<3; ++i) { unsigned char c; if( cmFileReadUChar(mfp->fh,&c,1) != kOkFileRC ) return cmErrMsg(&mfp->err,kFileFailMfRC,"MIDI 24 bit integer read failed."); *p = (*p << 8) + c; } //*p =mfSwap32(*p); return kOkMfRC; } cmMfRC_t _cmMidiFileRead32( _cmMidiFile_t* mfp, unsigned* p ) { if( cmFileReadUInt(mfp->fh,p,1) != kOkFileRC ) return cmErrMsg(&mfp->err,kFileFailMfRC,"MIDI integer read failed."); *p = mfSwap32(*p); return kOkMfRC; } cmMfRC_t _cmMidiFileReadText( _cmMidiFile_t* mfp, cmMidiTrackMsg_t* tmp, unsigned byteN ) { if( byteN == 0 ) return kOkMfRC; char* t = cmLhAllocZ(mfp->lhH,char,byteN+1); t[byteN] = 0; if( cmFileReadChar(mfp->fh,t,byteN) != kOkFileRC ) return cmErrMsg(&mfp->err,kFileFailMfRC,"MIDI read text failed."); tmp->u.text = t; tmp->byteCnt = byteN; return kOkMfRC; } cmMfRC_t _cmMidiFileReadRecd( _cmMidiFile_t* mfp, cmMidiTrackMsg_t* tmp, unsigned byteN ) { char* t = cmLhAllocZ(mfp->lhH,char,byteN); if( cmFileReadChar(mfp->fh,t,byteN) != kOkFileRC ) return cmErrMsg(&mfp->err,kFileFailMfRC,"MIDI read record failed."); tmp->byteCnt = byteN; tmp->u.voidPtr = t; return kOkMfRC; } cmMfRC_t _cmMidiFileReadVarLen( _cmMidiFile_t* mfp, unsigned* p ) { unsigned char c; if( cmFileReadUChar(mfp->fh,&c,1) != kOkFileRC ) return cmErrMsg(&mfp->err,kFileFailMfRC,"MIDI read variable length integer failed."); if( !(c & 0x80) ) *p = c; else { *p = c & 0x7f; do { if( cmFileReadUChar(mfp->fh,&c,1) != kOkFileRC ) return cmErrMsg(&mfp->err,kFileFailMfRC,"MIDI read variable length integer failed."); *p = (*p << 7) + (c & 0x7f); }while( c & 0x80 ); } return kOkMfRC; } cmMidiTrackMsg_t* _cmMidiFileAllocMsg( _cmMidiFile_t* mfp, unsigned short trkIdx, unsigned dtick, cmMidiByte_t status ) { cmMidiTrackMsg_t* tmp = cmLhAllocZ(mfp->lhH,cmMidiTrackMsg_t, 1 ); // set the generic track record fields tmp->dtick = dtick; tmp->status = status; tmp->metaId = kInvalidMetaMdId; tmp->trkIdx = trkIdx; tmp->byteCnt = 0; tmp->uid = mfp->nextUid++; return tmp; } cmMfRC_t _cmMidiFileAppendTrackMsg( _cmMidiFile_t* mfp, unsigned short trkIdx, unsigned dtick, cmMidiByte_t status, cmMidiTrackMsg_t** trkMsgPtrPtr ) { cmMidiTrackMsg_t* tmp = _cmMidiFileAllocMsg( mfp, trkIdx, dtick, status ); // link new record onto track record chain if( mfp->trkV[trkIdx].base == NULL ) mfp->trkV[trkIdx].base = tmp; else mfp->trkV[trkIdx].last->link = tmp; mfp->trkV[trkIdx].last = tmp; mfp->trkV[trkIdx].cnt++; *trkMsgPtrPtr = tmp; return kOkMfRC; } cmMfRC_t _cmMidiFileReadSysEx( _cmMidiFile_t* mfp, cmMidiTrackMsg_t* tmp, unsigned byteN ) { cmMfRC_t rc = kOkMfRC; cmMidiByte_t b = 0; if( byteN == cmInvalidCnt ) { long offs; if( cmFileTell(mfp->fh,&offs) != kOkFileRC ) return cmErrMsg(&mfp->err,kFileFailMfRC,"MIDI File 'tell' failed."); byteN = 0; // get the length of the sys-ex msg while( !cmFileEof(mfp->fh) && (b != kSysComEoxMdId) ) { if((rc = _cmMidiFileRead8(mfp,&b)) != kOkMfRC ) return rc; ++byteN; } // verify that the EOX byte was found if( b != kSysComEoxMdId ) return cmErrMsg(&mfp->err,kMissingEoxMfRC,"MIDI file missing 'end-of-sys-ex'."); // rewind to the beginning of the msg if( cmFileSeek(mfp->fh,kBeginFileFl,offs) != kOkFileRC ) return cmErrMsg(&mfp->err,kFileFailMfRC,"MIDI file seek failed on sys-ex read."); } // allocate memory to hold the sys-ex msg cmMidiByte_t* mp = cmLhAllocZ(mfp->lhH,cmMidiByte_t, byteN ); // read the sys-ex msg from the file into msg memory if( cmFileReadUChar(mfp->fh,mp,byteN) != kOkFileRC ) return cmErrMsg(&mfp->err,kFileFailMfRC,"MIDI sys-ex read failed."); tmp->byteCnt = byteN; tmp->u.sysExPtr = mp; return rc; } cmMfRC_t _cmMidiFileReadChannelMsg( _cmMidiFile_t* mfp, cmMidiByte_t* rsPtr, cmMidiByte_t status, cmMidiTrackMsg_t* tmp ) { cmMfRC_t rc = kOkMfRC; cmMidiChMsg_t* p = cmLhAllocZ(mfp->lhH,cmMidiChMsg_t,1); unsigned useRsFl = status <= 0x7f; cmMidiByte_t statusCh = useRsFl ? *rsPtr : status; if( useRsFl ) p->d0 = status; else *rsPtr = status; tmp->byteCnt = sizeof(cmMidiChMsg_t); tmp->status = statusCh & 0xf0; p->ch = statusCh & 0x0f; p->durMicros = 0; unsigned byteN = cmMidiStatusToByteCount(tmp->status); if( byteN==kInvalidMidiByte || byteN > 2 ) return cmErrMsg(&mfp->err,kInvalidStatusMfRC,"Invalid status:0x%x %i.",tmp->status,tmp->status); unsigned i; for(i=useRsFl; id0 : &p->d1; if((rc = _cmMidiFileRead8(mfp,b)) != kOkMfRC ) return rc; } // convert note-on velocity=0 to note off if( tmp->status == kNoteOnMdId && p->d1==0 ) tmp->status = kNoteOffMdId; tmp->u.chMsgPtr = p; return rc; } cmMfRC_t _cmMidiFileReadMetaMsg( _cmMidiFile_t* mfp, cmMidiTrackMsg_t* tmp ) { cmMidiByte_t metaId; cmMfRC_t rc; unsigned byteN = 0; if((rc = _cmMidiFileRead8(mfp,&metaId)) != kOkMfRC ) return rc; if((rc = _cmMidiFileReadVarLen(mfp,&byteN)) != kOkMfRC ) return rc; //printf("mt: %i 0x%x n:%i\n",metaId,metaId,byteN); switch( metaId ) { case kSeqNumbMdId: rc = _cmMidiFileRead16(mfp,&tmp->u.sVal); break; case kTextMdId: rc = _cmMidiFileReadText(mfp,tmp,byteN); break; case kCopyMdId: rc = _cmMidiFileReadText(mfp,tmp,byteN); break; case kTrkNameMdId: rc = _cmMidiFileReadText(mfp,tmp,byteN); break; case kInstrNameMdId: rc = _cmMidiFileReadText(mfp,tmp,byteN); break; case kLyricsMdId: rc = _cmMidiFileReadText(mfp,tmp,byteN); break; case kMarkerMdId: rc = _cmMidiFileReadText(mfp,tmp,byteN); break; case kCuePointMdId: rc = _cmMidiFileReadText(mfp,tmp,byteN); break; case kMidiChMdId: rc = _cmMidiFileRead8(mfp,&tmp->u.bVal); break; case kEndOfTrkMdId: break; case kTempoMdId: rc = _cmMidiFileRead24(mfp,&tmp->u.iVal); break; case kSmpteMdId: rc = _cmMidiFileReadRecd(mfp,tmp,sizeof(cmMidiSmpte_t)); break; case kTimeSigMdId: rc = _cmMidiFileReadRecd(mfp,tmp,sizeof(cmMidiTimeSig_t)); break; case kKeySigMdId: rc = _cmMidiFileReadRecd(mfp,tmp,sizeof(cmMidiKeySig_t)); break; case kSeqSpecMdId: rc = _cmMidiFileReadSysEx(mfp,tmp,byteN); break; default: cmFileSeek(mfp->fh,kCurFileFl,byteN); rc = cmErrMsg(&mfp->err,kUnknownMetaIdMfRC,"Unknown meta status:0x%x %i.",metaId,metaId); } tmp->metaId = metaId; return rc; } cmMfRC_t _cmMidiFileReadTrack( _cmMidiFile_t* mfp, unsigned short trkIdx ) { cmMfRC_t rc = kOkMfRC; unsigned dticks = 0; cmMidiByte_t status; cmMidiByte_t runstatus = 0; bool contFl = true; while( contFl && (rc==kOkMfRC)) { cmMidiTrackMsg_t* tmp = NULL; // read the tick count if((rc = _cmMidiFileReadVarLen(mfp,&dticks)) != kOkMfRC ) return rc; // read the status byte if((rc = _cmMidiFileRead8(mfp,&status)) != kOkMfRC ) return rc; //printf("st:%i 0x%x\n",status,status); // append a track msg if((rc = _cmMidiFileAppendTrackMsg( mfp, trkIdx, dticks, status, &tmp )) != kOkMfRC ) return rc; // switch on status switch( status ) { // handle sys-ex msg case kSysExMdId: rc = _cmMidiFileReadSysEx(mfp,tmp,cmInvalidCnt); break; // handle meta msg case kMetaStId: rc = _cmMidiFileReadMetaMsg(mfp,tmp); // ignore unknown meta messages if( rc == kUnknownMetaIdMfRC ) rc = kOkMfRC; contFl = tmp->metaId != kEndOfTrkMdId; break; default: // handle channel msg rc = _cmMidiFileReadChannelMsg(mfp,&runstatus,status,tmp); } } return rc; } cmMfRC_t _cmMidiFileReadHdr( _cmMidiFile_t* mfp ) { cmMfRC_t rc; unsigned fileId; unsigned chunkByteN; // read the file id if((rc = _cmMidiFileRead32(mfp,&fileId)) != kOkMfRC ) return rc; // verify the file id if( fileId != 'MThd' ) return cmErrMsg(&mfp->err,kNotAMidiFileMfRC,""); // read the file chunk byte count if((rc = _cmMidiFileRead32(mfp,&chunkByteN)) != kOkMfRC ) return rc; // read the format id if((rc = _cmMidiFileRead16(mfp,&mfp->fmtId)) != kOkMfRC ) return rc; // read the track count if((rc = _cmMidiFileRead16(mfp,&mfp->trkN)) != kOkMfRC ) return rc; // read the ticks per quarter note if((rc = _cmMidiFileRead16(mfp,&mfp->ticksPerQN)) != kOkMfRC ) return rc; // if the division field was given in smpte if( mfp->ticksPerQN & 0x8000 ) { mfp->smpteFmtId = (mfp->ticksPerQN & 0x7f00) >> 8; mfp->smpteTicksPerFrame = (mfp->ticksPerQN & 0xFF); mfp->ticksPerQN = 0; } // allocate and zero the track array if( mfp->trkN ) mfp->trkV = cmLhAllocZ(mfp->lhH, _cmMidiTrack_t, mfp->trkN); return rc; } int _cmMidiFileSortFunc( const void *p0, const void* p1 ) { if( (*(cmMidiTrackMsg_t**)p0)->atick == (*(cmMidiTrackMsg_t**)p1)->atick ) return 0; return (*(cmMidiTrackMsg_t**)p0)->atick < (*(cmMidiTrackMsg_t**)p1)->atick ? -1 : 1; } // Set the absolute accumulated ticks (atick) value of each track message. // The absolute accumulated ticks gives a global time ordering for all // messages in the file. void _cmMidiFileSetAccumulateTicks( _cmMidiFile_t* p ) { cmMidiTrackMsg_t* nextTrkMsg[ p->trkN ]; // next msg in each track unsigned long long atick = 0; unsigned i; bool fl = true; // iniitalize nextTrkTick[] and nextTrkMsg[]. for(i=0; itrkN; ++i) if((nextTrkMsg[i] = p->trkV[i].base) != NULL ) nextTrkMsg[i]->atick = nextTrkMsg[i]->dtick; while(1) { unsigned k = cmInvalidIdx; // find the trk which has the next msg (min atick time) for(i=0; itrkN; ++i) if( nextTrkMsg[i]!=NULL && (k==cmInvalidIdx || nextTrkMsg[i]->atick < nextTrkMsg[k]->atick) ) k = i; // no next msg was found - we're done if( k == cmInvalidIdx ) break; if( fl && nextTrkMsg[k]->dtick > 0 ) { fl = false; nextTrkMsg[k]->dtick = 1; nextTrkMsg[k]->atick = 1; } // store the current atick atick = nextTrkMsg[k]->atick; // advance the selected track to it's next message nextTrkMsg[k] = nextTrkMsg[k]->link; // set the selected tracks next atick time if( nextTrkMsg[k] != NULL ) nextTrkMsg[k]->atick = atick + nextTrkMsg[k]->dtick; } } void _cmMidiFileSetAbsoluteTime( _cmMidiFile_t* mfp ) { double microsPerQN = 60000000/120; // default tempo; double microsPerTick = microsPerQN / mfp->ticksPerQN; unsigned long long amicro = 0; unsigned i; for(i=0; imsgN; ++i) { cmMidiTrackMsg_t* mp = mfp->msgV[i]; unsigned dtick = 0; if( i > 0 ) { // atick must have already been set and sorted assert( mp->atick >= mfp->msgV[i-1]->atick ); dtick = mp->atick - mfp->msgV[i-1]->atick; } amicro += microsPerTick * dtick; mp->amicro = amicro; // track tempo changes if( mp->status == kMetaStId && mp->metaId == kTempoMdId ) microsPerTick = mp->u.iVal / mfp->ticksPerQN; } } cmMfRC_t _cmMidiFileClose( _cmMidiFile_t* mfp ) { cmMfRC_t rc = kOkMfRC; if( mfp == NULL ) return rc; cmMemPtrFree(&mfp->msgV); if( cmFileIsValid( mfp->fh ) ) if( cmFileClose( &mfp->fh ) != kOkFileRC ) rc = cmErrMsg(&mfp->err,kFileFailMfRC,"MIDI file close failed."); if( cmLHeapIsValid( mfp->lhH ) ) cmLHeapDestroy(&mfp->lhH); cmMemPtrFree(&mfp); return rc; } void _cmMidiFileLinearize( _cmMidiFile_t* mfp ) { unsigned trkIdx,i,j; // get the total trk msg count mfp->msgN = 0; for(trkIdx=0; trkIdxtrkN; ++trkIdx) mfp->msgN += mfp->trkV[ trkIdx ].cnt; // allocate the trk msg index vector: msgV[] mfp->msgV = cmMemResizeZ(cmMidiTrackMsg_t*, mfp->msgV, mfp->msgN); // store a pointer to every trk msg in msgV[] for(i=0,j=0; itrkN; ++i) { cmMidiTrackMsg_t* m = mfp->trkV[i].base; for(; m!=NULL; m=m->link) { assert( j < mfp->msgN ); mfp->msgV[j++] = m; } } // set the atick value in each msg _cmMidiFileSetAccumulateTicks(mfp); // sort msgV[] in ascending order on atick qsort( mfp->msgV, mfp->msgN, sizeof(cmMidiTrackMsg_t*), _cmMidiFileSortFunc ); // set the amicro value in each msg _cmMidiFileSetAbsoluteTime(mfp); } cmMfRC_t _cmMidiFileCreate( cmCtx_t* ctx, cmMidiFileH_t* hp ) { cmMfRC_t rc = kOkMfRC; _cmMidiFile_t* p = NULL; if((rc = cmMidiFileClose(hp)) != kOkMfRC ) return rc; // allocate the midi file object if(( p = cmMemAllocZ( _cmMidiFile_t, 1)) == NULL ) return rc = cmErrMsg(&ctx->err,kMemAllocFailMfRC,"MIDI file memory allocation failed."); cmErrSetup(&p->err,&ctx->rpt,"MIDI File"); // allocate the linked heap if( cmLHeapIsValid( p->lhH = cmLHeapCreate( 1024, ctx )) == false ) rc = cmErrMsg(&p->err,kMemAllocFailMfRC,"MIDI heap allocation failed."); if( rc != kOkMfRC ) _cmMidiFileClose(p); else hp->h = p; return rc; } cmMfRC_t cmMidiFileOpen( cmCtx_t* ctx, cmMidiFileH_t* hp, const char* fn ) { cmMfRC_t rc = kOkMfRC; unsigned short trkIdx = 0; if((rc = _cmMidiFileCreate(ctx,hp)) != kOkMfRC ) return rc; _cmMidiFile_t* p = _cmMidiFileHandleToPtr(*hp); // open the file if(cmFileOpen(&p->fh,fn,kReadFileFl | kBinaryFileFl,p->err.rpt) != kOkFileRC ) { rc = cmErrMsg(&p->err,kFileFailMfRC,"MIDI file open failed."); goto errLabel; } // read header and setup track array if(( rc = _cmMidiFileReadHdr(p)) != kOkMfRC ) goto errLabel; while( !cmFileEof(p->fh) && trkIdx < p->trkN ) { unsigned chkId = 0,chkN=0; // read the chunk id if((rc = _cmMidiFileRead32(p,&chkId)) != kOkMfRC ) goto errLabel; // read the chunk size if((rc = _cmMidiFileRead32(p,&chkN)) != kOkMfRC ) goto errLabel; // if this is not a trk chunk then skip it if( chkId != (unsigned)'MTrk') { //if( fseek( p->fp, chkN, SEEK_CUR) != 0 ) if( cmFileSeek(p->fh,kCurFileFl,chkN) != kOkFileRC ) { rc = cmErrMsg(&p->err,kFileFailMfRC,"MIDI file seek failed."); goto errLabel; } } else { if((rc = _cmMidiFileReadTrack(p,trkIdx)) != kOkMfRC ) goto errLabel; ++trkIdx; } } // store the file name p->fn = cmLhAllocZ(p->lhH,char,strlen(fn)+1); assert( p->fn != NULL ); strcpy(p->fn,fn); _cmMidiFileLinearize(p); errLabel: if( cmFileClose(&p->fh) != kOkFileRC ) rc = cmErrMsg(&p->err,kFileFailMfRC,"MIDI file close failed."); if( rc != kOkMfRC ) _cmMidiFileClose(p); return rc; } cmMfRC_t cmMidiFileCreate( cmCtx_t* ctx, cmMidiFileH_t* hp, unsigned trkN, unsigned ticksPerQN ) { cmMfRC_t rc = kOkMfRC; if((rc = _cmMidiFileCreate(ctx,hp)) != kOkMfRC ) return rc; _cmMidiFile_t* p = _cmMidiFileHandleToPtr(*hp); p->ticksPerQN = ticksPerQN; p->fmtId = 1; p->trkN = trkN; p->trkV = cmLhAllocZ(p->lhH, _cmMidiTrack_t, p->trkN); return rc; } cmMfRC_t cmMidiFileClose( cmMidiFileH_t* hp ) { cmMfRC_t rc = kOkMfRC; if( hp==NULL || cmMidiFileIsValid(*hp)==false ) return kOkMfRC; _cmMidiFile_t* p = _cmMidiFileHandleToPtr(*hp); if((rc = _cmMidiFileClose(p)) != kOkMfRC ) return rc; hp->h = NULL; return rc; } cmMfRC_t _cmMidiFileWrite8( _cmMidiFile_t* mfp, unsigned char v ) { cmMfRC_t rc = kOkMfRC; if( cmFileWriteUChar(mfp->fh,&v,1) != kOkFileRC ) rc = cmErrMsg(&mfp->err,kFileFailMfRC,"MIDI file byte write failed."); return rc; } cmMfRC_t _cmMidiFileWrite16( _cmMidiFile_t* mfp, unsigned short v ) { cmMfRC_t rc = kOkMfRC; v = mfSwap16(v); if( cmFileWriteUShort(mfp->fh,&v,1) != kOkFileRC ) rc = cmErrMsg(&mfp->err,kFileFailMfRC,"MIDI file short integer write failed."); return rc; } cmMfRC_t _cmMidiFileWrite24( _cmMidiFile_t* mfp, unsigned v ) { cmMfRC_t rc = kOkMfRC; unsigned mask = 0xff0000; int i; for(i = 2; i>=0; --i) { unsigned char c = (v & mask) >> (i*8); mask >>= 8; if( cmFileWriteUChar(mfp->fh,&c,1) != kOkFileRC ) { rc = cmErrMsg(&mfp->err,kFileFailMfRC,"MIDI file 24 bit integer write failed."); goto errLabel; } } errLabel: return rc; } cmMfRC_t _cmMidiFileWrite32( _cmMidiFile_t* mfp, unsigned v ) { cmMfRC_t rc = kOkMfRC; v = mfSwap32(v); if( cmFileWriteUInt(mfp->fh,&v,1) != kOkFileRC ) rc = cmErrMsg(&mfp->err,kFileFailMfRC,"MIDI file integer write failed."); return rc; } cmMfRC_t _cmMidiFileWriteRecd( _cmMidiFile_t* mfp, const void* v, unsigned byteCnt ) { cmMfRC_t rc = kOkMfRC; if( cmFileWriteChar(mfp->fh,v,byteCnt) != kOkFileRC ) rc = cmErrMsg(&mfp->err,kFileFailMfRC,"MIDI file write record failed."); return rc; } cmMfRC_t _cmMidiFileWriteVarLen( _cmMidiFile_t* mfp, unsigned v ) { cmMfRC_t rc = kOkMfRC; unsigned buf = v & 0x7f; while((v >>= 7) > 0 ) { buf <<= 8; buf |= 0x80; buf += (v & 0x7f); } while(1) { unsigned char c = (unsigned char)(buf & 0xff); if( cmFileWriteUChar(mfp->fh,&c,1) != kOkFileRC ) { rc = cmErrMsg(&mfp->err,kFileFailMfRC,"MIDI file variable length integer write failed."); goto errLabel; } if( buf & 0x80 ) buf >>= 8; else break; } errLabel: return rc; } cmMfRC_t _cmMidiFileWriteHdr( _cmMidiFile_t* mfp ) { cmMfRC_t rc; unsigned fileId = 'MThd'; unsigned chunkByteN = 6; // write the file id ('MThd') if((rc = _cmMidiFileWrite32(mfp,fileId)) != kOkMfRC ) return rc; // write the file chunk byte count (always 6) if((rc = _cmMidiFileWrite32(mfp,chunkByteN)) != kOkMfRC ) return rc; // write the MIDI file format id (0,1,2) if((rc = _cmMidiFileWrite16(mfp,mfp->fmtId)) != kOkMfRC ) return rc; // write the track count if((rc = _cmMidiFileWrite16(mfp,mfp->trkN)) != kOkMfRC ) return rc; unsigned short v = 0; // if the ticks per quarter note field is valid ... if( mfp->ticksPerQN ) v = mfp->ticksPerQN; else { // ... otherwise the division field was given in smpte v = mfp->smpteFmtId << 8; v += mfp->smpteTicksPerFrame; } if((rc = _cmMidiFileWrite16(mfp,v)) != kOkMfRC ) return rc; return rc; } cmMfRC_t _cmMidiFileWriteSysEx( _cmMidiFile_t* mfp, cmMidiTrackMsg_t* tmp ) { cmMfRC_t rc = kOkMfRC; if((rc = _cmMidiFileWrite8(mfp,kSysExMdId)) != kOkMfRC ) goto errLabel; if( cmFileWriteUChar(mfp->fh,tmp->u.sysExPtr,tmp->byteCnt) != kOkFileRC ) rc = cmErrMsg(&mfp->err,kFileFailMfRC,"Sys-ex msg write failed."); errLabel: return rc; } cmMfRC_t _cmMidiFileWriteChannelMsg( _cmMidiFile_t* mfp, const cmMidiTrackMsg_t* tmp, cmMidiByte_t* runStatus ) { cmMfRC_t rc = kOkMfRC; unsigned byteN = cmMidiStatusToByteCount(tmp->status); cmMidiByte_t status = tmp->status + tmp->u.chMsgPtr->ch; if( status != *runStatus ) { *runStatus = status; if((rc = _cmMidiFileWrite8(mfp,status)) != kOkMfRC ) goto errLabel; } if(byteN>=1) if((rc = _cmMidiFileWrite8(mfp,tmp->u.chMsgPtr->d0)) != kOkMfRC ) goto errLabel; if(byteN>=2) if((rc = _cmMidiFileWrite8(mfp,tmp->u.chMsgPtr->d1)) != kOkMfRC ) goto errLabel; errLabel: return rc; } cmMfRC_t _cmMidiFileWriteMetaMsg( _cmMidiFile_t* mfp, const cmMidiTrackMsg_t* tmp ) { cmMfRC_t rc; if((rc = _cmMidiFileWrite8(mfp,kMetaStId)) != kOkMfRC ) return rc; if((rc = _cmMidiFileWrite8(mfp,tmp->metaId)) != kOkMfRC ) return rc; switch( tmp->metaId ) { case kSeqNumbMdId: if((rc = _cmMidiFileWrite8(mfp,sizeof(tmp->u.sVal))) == kOkMfRC ) rc = _cmMidiFileWrite16(mfp,tmp->u.sVal); break; case kTempoMdId: if((rc = _cmMidiFileWrite8(mfp,3)) == kOkMfRC ) rc = _cmMidiFileWrite24(mfp,tmp->u.iVal); break; case kSmpteMdId: if((rc = _cmMidiFileWrite8(mfp,sizeof(cmMidiSmpte_t))) == kOkMfRC ) rc = _cmMidiFileWriteRecd(mfp,tmp->u.smptePtr,sizeof(cmMidiSmpte_t)); break; case kTimeSigMdId: if((rc = _cmMidiFileWrite8(mfp,sizeof(cmMidiTimeSig_t))) == kOkMfRC ) rc = _cmMidiFileWriteRecd(mfp,tmp->u.timeSigPtr,sizeof(cmMidiTimeSig_t)); break; case kKeySigMdId: if((rc = _cmMidiFileWrite8(mfp,sizeof(cmMidiKeySig_t))) == kOkMfRC ) rc = _cmMidiFileWriteRecd(mfp,tmp->u.keySigPtr,sizeof(cmMidiKeySig_t)); break; case kSeqSpecMdId: if((rc = _cmMidiFileWriteVarLen(mfp,sizeof(tmp->byteCnt))) == kOkMfRC ) rc = _cmMidiFileWriteRecd(mfp,tmp->u.sysExPtr,tmp->byteCnt); break; case kMidiChMdId: if((rc = _cmMidiFileWrite8(mfp,sizeof(tmp->u.bVal))) == kOkMfRC ) rc = _cmMidiFileWrite8(mfp,tmp->u.bVal); break; case kEndOfTrkMdId: rc = _cmMidiFileWrite8(mfp,0); break; case kTextMdId: case kCopyMdId: case kTrkNameMdId: case kInstrNameMdId: case kLyricsMdId: case kMarkerMdId: case kCuePointMdId: { unsigned n = tmp->u.text==NULL ? 0 : strlen(tmp->u.text); if((rc = _cmMidiFileWriteVarLen(mfp,n)) == kOkMfRC && n>0 ) rc = _cmMidiFileWriteRecd(mfp,tmp->u.text,n); } break; default: { // ignore unknown meta messages } } return rc; } cmMfRC_t _cmMidiFileWriteTrack( _cmMidiFile_t* mfp, unsigned trkIdx ) { cmMfRC_t rc = kOkMfRC; cmMidiTrackMsg_t* tmp = mfp->trkV[trkIdx].base; cmMidiByte_t runStatus = 0; for(; tmp != NULL; tmp=tmp->link) { // write the msg tick count if((rc = _cmMidiFileWriteVarLen(mfp,tmp->dtick)) != kOkMfRC ) return rc; // switch on status switch( tmp->status ) { // handle sys-ex msg case kSysExMdId: rc = _cmMidiFileWriteSysEx(mfp,tmp); break; // handle meta msg case kMetaStId: rc = _cmMidiFileWriteMetaMsg(mfp,tmp); break; default: // handle channel msg rc = _cmMidiFileWriteChannelMsg(mfp,tmp,&runStatus); } } return rc; } cmMfRC_t cmMidiFileWrite( cmMidiFileH_t h, const char* fn ) { cmMfRC_t rc = kOkMfRC; _cmMidiFile_t* mfp = _cmMidiFileHandleToPtr(h); unsigned i; // create the output file if( cmFileOpen(&mfp->fh,fn,kWriteFileFl,mfp->err.rpt) != kOkFileRC ) return cmErrMsg(&mfp->err,kFileFailMfRC,"The MIDI file '%s' could not be created.",cmStringNullGuard(fn)); // write the file header if((rc = _cmMidiFileWriteHdr(mfp)) != kOkMfRC ) { rc = cmErrMsg(&mfp->err,rc,"The file header write failed on the MIDI file '%s'.",cmStringNullGuard(fn)); goto errLabel; } for(i=0; i < mfp->trkN; ++i ) { unsigned chkId = 'MTrk'; long offs0,offs1; // write the track chunk id ('MTrk') if((rc = _cmMidiFileWrite32(mfp,chkId)) != kOkMfRC ) goto errLabel; cmFileTell(mfp->fh,&offs0); // write the track chunk size as zero if((rc = _cmMidiFileWrite32(mfp,0)) != kOkMfRC ) goto errLabel; if((rc = _cmMidiFileWriteTrack(mfp,i)) != kOkMfRC ) goto errLabel; cmFileTell(mfp->fh,&offs1); cmFileSeek(mfp->fh,kBeginFileFl,offs0); _cmMidiFileWrite32(mfp,offs1-offs0-4); cmFileSeek(mfp->fh,kBeginFileFl,offs1); } errLabel: cmFileClose(&mfp->fh); return rc; } bool cmMidiFileIsValid( cmMidiFileH_t h ) { return h.h != NULL; } unsigned cmMidiFileTrackCount( cmMidiFileH_t h ) { _cmMidiFile_t* mfp; if((mfp = _cmMidiFileHandleToPtr(h)) == NULL ) return cmInvalidCnt; return mfp->trkN; } unsigned cmMidiFileType( cmMidiFileH_t h ) { _cmMidiFile_t* mfp; if((mfp = _cmMidiFileHandleToPtr(h)) == NULL ) return cmInvalidId; return mfp->fmtId; } const char* cmMidiFileName( cmMidiFileH_t h ) { _cmMidiFile_t* mfp; if((mfp = _cmMidiFileHandleToPtr(h)) == NULL ) return NULL; return mfp->fn; } unsigned cmMidiFileTicksPerQN( cmMidiFileH_t h ) { _cmMidiFile_t* mfp; if((mfp = _cmMidiFileHandleToPtr(h)) == NULL ) return cmInvalidCnt; return mfp->ticksPerQN; } cmMidiByte_t cmMidiFileTicksPerSmpteFrame( cmMidiFileH_t h ) { _cmMidiFile_t* mfp; if((mfp = _cmMidiFileHandleToPtr(h)) == NULL ) return kInvalidMidiByte; if( mfp->ticksPerQN != 0 ) return 0; return mfp->smpteTicksPerFrame; } cmMidiByte_t cmMidiFileSmpteFormatId( cmMidiFileH_t h ) { _cmMidiFile_t* mfp; if((mfp = _cmMidiFileHandleToPtr(h)) == NULL ) return kInvalidMidiByte; if( mfp->ticksPerQN != 0 ) return 0; return mfp->smpteFmtId; } unsigned cmMidiFileTrackMsgCount( cmMidiFileH_t h, unsigned trackIdx ) { _cmMidiFile_t* mfp; if((mfp = _cmMidiFileHandleToPtr(h)) == NULL ) return cmInvalidCnt; return mfp->trkV[trackIdx].cnt; } const cmMidiTrackMsg_t* cmMidiFileTrackMsg( cmMidiFileH_t h, unsigned trackIdx ) { _cmMidiFile_t* mfp; if((mfp = _cmMidiFileHandleToPtr(h)) == NULL ) return NULL; return mfp->trkV[trackIdx].base; } unsigned cmMidiFileMsgCount( cmMidiFileH_t h ) { _cmMidiFile_t* mfp; if((mfp = _cmMidiFileHandleToPtr(h)) == NULL ) return cmInvalidCnt; return mfp->msgN; } const cmMidiTrackMsg_t** cmMidiFileMsgArray( cmMidiFileH_t h ) { _cmMidiFile_t* mfp; if((mfp = _cmMidiFileHandleToPtr(h)) == NULL ) return NULL; // this cast is needed to eliminate an apparently needless 'incompatible type' warning return (const cmMidiTrackMsg_t**)mfp->msgV; } cmMidiTrackMsg_t* _cmMidiFileUidToMsg( _cmMidiFile_t* mfp, unsigned uid ) { unsigned i; for(i=0; imsgN; ++i) if( mfp->msgV[i]->uid == uid ) return mfp->msgV[i]; return NULL; } cmMfRC_t cmMidiFileSetVelocity( cmMidiFileH_t h, unsigned uid, cmMidiByte_t vel ) { cmMidiTrackMsg_t* r; _cmMidiFile_t* mfp = _cmMidiFileHandleToPtr(h); assert( mfp != NULL ); if((r = _cmMidiFileUidToMsg(mfp,uid)) == NULL ) return cmErrMsg(&mfp->err,kUidNotFoundMfRC,"The MIDI file uid %i could not be found.",uid); if( cmMidiIsNoteOn(r->status) == false && cmMidiIsNoteOff(r->status,0)==false ) return cmErrMsg(&mfp->err,kUidNotANoteMsgMfRC,"Cannot set velocity on a non-Note-On/Off msg."); cmMidiChMsg_t* chm = (cmMidiChMsg_t*)r->u.chMsgPtr; chm->d1 = vel; return kOkMfRC; } // Returns NULL if uid is not found or if it the first msg on the track. cmMidiTrackMsg_t* _cmMidiFileMsgBeforeUid( _cmMidiFile_t* p, unsigned uid ) { cmMidiTrackMsg_t* m; if((m = _cmMidiFileUidToMsg(p,uid)) == NULL ) return NULL; assert( m->trkIdx < p->trkN ); cmMidiTrackMsg_t* m0 = NULL; cmMidiTrackMsg_t* m1 = p->trkV[ m->trkIdx ].base; for(; m1!=NULL; m1 = m1->link) { if( m1->uid == uid ) break; m0 = m1; } return m0; } unsigned _cmMidiFileIsMsgFirstOnTrack( _cmMidiFile_t* p, unsigned uid ) { unsigned i; for(i=0; itrkN; ++i) if( p->trkV[i].base!=NULL && p->trkV[i].base->uid == uid ) return i; return cmInvalidIdx; } cmMfRC_t cmMidiFileInsertMsg( cmMidiFileH_t h, unsigned uid, int dtick, cmMidiByte_t ch, cmMidiByte_t status, cmMidiByte_t d0, cmMidiByte_t d1 ) { _cmMidiFile_t* mfp = _cmMidiFileHandleToPtr(h); assert( mfp != NULL ); cmMidiTrackMsg_t* ref = NULL; unsigned trkIdx = cmInvalidIdx; // if dtick is positive ... if( dtick >= 0 ) { ref = _cmMidiFileUidToMsg(mfp,uid); // ... then get the ref. msg. trkIdx = ref->trkIdx; } else // if dtick is negative ... { // ... get get the msg before the ref. msg. if((ref = _cmMidiFileMsgBeforeUid(mfp,uid)) != NULL ) trkIdx = ref->trkIdx; else { // ... the ref. msg was first in the track so there is no msg before it trkIdx = _cmMidiFileIsMsgFirstOnTrack(mfp,uid); } } // verify that the reference msg was found if( trkIdx == cmInvalidIdx ) return cmErrMsg(&mfp->err,kUidNotFoundMfRC,"The UID (%i) reference note could not be located.",uid); assert( trkIdx < mfp->trkN ); // complete the msg setup _cmMidiTrack_t* trk = mfp->trkV + trkIdx; cmMidiTrackMsg_t* m = _cmMidiFileAllocMsg(mfp, trkIdx, abs(dtick), status ); cmMidiChMsg_t* c = cmLhAllocZ(mfp->lhH,cmMidiChMsg_t,1); m->u.chMsgPtr = c; c->ch = ch; c->d0 = d0; c->d1 = d1; // if 'm' is prior to the first msg in the track if( ref == NULL ) { // ... then make 'm' the first msg in the first msg m->link = trk->base; trk->base = m; // 'm' is before ref and the track cannot be empty (because ref is in it) 'm' // can never be the last msg in the list } else // ref is the msg before 'm' { m->link = ref->link; ref->link = m; // if ref was the last msg in the trk ... if( trk->last == ref ) trk->last = m; //... then 'm' is now the last msg in the trk } trk->cnt += 1; _cmMidiFileLinearize(mfp); return kOkMfRC; } // Only set // atick - used to position the msg in the track // status - this field is always set (Note that channel information must stripped from the status byte and included in the channel msg data) // metaId - this field is optional depending on the msg type // byteCnt - used to allocate storage for the data element in 'cmMidiTrackMsg_t.u' // u - the message data cmMfRC_t cmMidiFileInsertTrackMsg( cmMidiFileH_t h, unsigned trkIdx, const cmMidiTrackMsg_t* msg ) { _cmMidiFile_t* p = _cmMidiFileHandleToPtr(h); // validate the track index if( trkIdx >= p->trkN ) return cmErrMsg(&p->err,kInvalidTrkIndexMfRC,"The track index (%i) is invalid.",trkIdx); // allocate a new track record cmMidiTrackMsg_t* m = (cmMidiTrackMsg_t*)cmLhAllocZ(p->lhH,char,sizeof(cmMidiTrackMsg_t)+msg->byteCnt); // fill the track record m->uid = p->nextUid++; m->atick = msg->atick; m->status = msg->status; m->metaId = msg->metaId; m->trkIdx = trkIdx; m->byteCnt = msg->byteCnt; memcpy(&m->u,&msg->u,sizeof(msg->u)); // copy the exernal data if( msg->byteCnt > 0 ) { m->u.voidPtr = (m+1); memcpy((void*)m->u.voidPtr,msg->u.voidPtr,msg->byteCnt); } cmMidiTrackMsg_t* m0 = NULL; cmMidiTrackMsg_t* m1 = p->trkV[trkIdx].base; // locate the track record before and after the new msg for(; m1!=NULL; m1=m1->link) if( m1->atick > m->atick ) { if( m0 == NULL ) p->trkV[trkIdx].base = m; else m0->link = m; m->link = m1; break; } // the new track record is the last msg if( m1 == NULL ) { m1 = p->trkV[trkIdx].last; m1->link = m; p->trkV[trkIdx].last = m; if( p->trkV[trkIdx].base == NULL ) p->trkV[trkIdx].base = m; } return kOkMfRC; } cmMfRC_t cmMidiFileInsertTrackChMsg( cmMidiFileH_t h, unsigned trkIdx, unsigned atick, cmMidiByte_t status, cmMidiByte_t d0, cmMidiByte_t d1 ) { cmMidiTrackMsg_t m; cmMidiChMsg_t cm; memset(&m,0,sizeof(m)); memset(&cm,0,sizeof(cm)); cm.ch = status & 0x0f; cm.d0 = d0; cm.d1 = d1; m.atick = atick; m.status = status & 0xf0; m.byteCnt = sizeof(cm); m.u.chMsgPtr = &cm; return cmMidiFileInsertTrackMsg(h,trkIdx,&m); } cmMfRC_t cmMidFileInsertTrackTempoMsg( cmMidiFileH_t h, unsigned trkIdx, unsigned atick, unsigned bpm ) { cmMidiTrackMsg_t m; memset(&m,0,sizeof(m)); m.atick = atick; m.status = kMetaStId; m.metaId = kTempoMdId; m.u.iVal = 60000000/bpm; // convert BPM to microsPerQN return cmMidiFileInsertTrackMsg(h,trkIdx,&m); } unsigned cmMidiFileSeekUsecs( cmMidiFileH_t h, unsigned long long offsUSecs, unsigned* msgUsecsPtr, unsigned* microsPerTickPtr ) { _cmMidiFile_t* p; if((p = _cmMidiFileHandleToPtr(h)) == NULL ) return cmInvalidIdx; if( p->msgN == 0 ) return cmInvalidIdx; unsigned mi; double microsPerQN = 60000000.0/120.0; double microsPerTick = microsPerQN / p->ticksPerQN; double accUSecs = 0; for(mi=0; mimsgN; ++mi) { const cmMidiTrackMsg_t* mp = p->msgV[mi]; if( mp->amicro >= offsUSecs ) break; } if( mi == p->msgN ) return cmInvalidIdx; if( msgUsecsPtr != NULL ) *msgUsecsPtr = round(accUSecs - offsUSecs); if( microsPerTickPtr != NULL ) *microsPerTickPtr = round(microsPerTick); return mi; } double cmMidiFileDurSecs( cmMidiFileH_t h ) { _cmMidiFile_t* mfp = _cmMidiFileHandleToPtr(h); if( mfp->msgN == 0 ) return 0; return mfp->msgV[ mfp->msgN-1 ]->amicro / 1000000.0; } typedef struct _cmMidiVoice_str { const cmMidiTrackMsg_t* mp; unsigned durMicros; bool sustainFl; struct _cmMidiVoice_str* link; } _cmMidiVoice_t; void _cmMidiFileSetDur( cmMidiTrackMsg_t* m0, cmMidiTrackMsg_t* m1 ) { // calculate the duration of the sounding note ((cmMidiChMsg_t*)m0->u.chMsgPtr)->durMicros = m1->amicro - m0->amicro; // set the note-off msg pointer ((cmMidiChMsg_t*)m0->u.chMsgPtr)->end = m1; } bool _cmMidiFileCalcNoteDur( cmMidiTrackMsg_t* m0, cmMidiTrackMsg_t* m1, int noteGateFl, int sustainGateFl, bool sostGateFl ) { // if the note is being kept sounding because the key is still depressed, // the sustain pedal is down or it is being held by the sostenuto pedal .... if( noteGateFl>0 || sustainGateFl>0 || sostGateFl ) return false; // ... do nothing _cmMidiFileSetDur(m0,m1); return true; } void cmMidiFileCalcNoteDurations( cmMidiFileH_t h ) { _cmMidiFile_t* p; if((p = _cmMidiFileHandleToPtr(h)) == NULL ) return; if( p->msgN == 0 ) return; unsigned mi = cmInvalidId; cmMidiTrackMsg_t* noteM[ kMidiNoteCnt * kMidiChCnt ]; // ptr to note-on or NULL if the note is not sounding cmMidiTrackMsg_t* sustV[ kMidiChCnt ]; cmMidiTrackMsg_t* sostV[ kMidiChCnt ]; int noteGateM[ kMidiNoteCnt * kMidiChCnt ]; // true if the associated note key is depressed bool sostGateM[ kMidiNoteCnt * kMidiChCnt ]; // true if the associated note was active when the sost. pedal went down int sustGateV[ kMidiChCnt]; // true if the associated sustain pedal is down int sostGateV[ kMidiChCnt]; // true if the associated sostenuto pedal is down unsigned i,j; // initialize the state tracking variables for(i=0; imsgN; ++mi) { cmMidiTrackMsg_t* m = p->msgV[mi]; // verify that time is also incrementing assert( mi==0 || (mi>0 && m->amicro >= p->msgV[mi-1]->amicro) ); // ignore all non-channel messages if( !cmMidiIsChStatus( m->status ) ) continue; cmMidiByte_t ch = m->u.chMsgPtr->ch; // get the midi msg channel cmMidiByte_t d0 = m->u.chMsgPtr->d0; // get the midi msg data value // if this is a note-on msg if( cmMidiFileIsNoteOn(m) ) { unsigned k = ch*kMidiNoteCnt + d0; // there should be no existing sounding note instance for this pitch //if( noteGateM[k] == 0 && noteM[k] != NULL ) // cmErrWarnMsg(&p->err,kMissingNoteOffMfRC,"%i : Missing note-off instance for note on:%s",m->uid,cmMidiToSciPitch(d0,NULL,0)); if( noteM[k] != NULL ) noteGateM[k] += 1; else { noteM[k] = m; noteGateM[k] = 1; } } else // if this is a note-off msg if( cmMidiFileIsNoteOff(m) ) { unsigned k = ch*kMidiNoteCnt + d0; cmMidiTrackMsg_t* m0 = noteM[k]; if( m0 == NULL ) cmErrWarnMsg(&p->err,kMissingNoteOffMfRC,"%i : Missing note-on instance for note-off:%s",m->uid,cmMidiToSciPitch(d0,NULL,0)); else { // a key was released - so it should not already be up if( noteGateM[k]==0 ) cmErrWarnMsg(&p->err,kMissingNoteOffMfRC,"%i : Missing note-on for note-off:%s",m->uid,cmMidiToSciPitch(d0,NULL,0)); else { noteGateM[k] -= 1; // update the note gate state // update the sounding note status if( _cmMidiFileCalcNoteDur(m0, m, noteGateM[k], sustGateV[ch], sostGateM[k]) ) noteM[k] = NULL; } } } else // This is a sustain-pedal down msg if( cmMidiFileIsSustainPedalDown(m) ) { // if the sustain channel is already down //if( sustGateV[ch] ) // cmErrWarnMsg(&p->err,kSustainPedalMfRC,"%i : The sustain pedal went down twice with no intervening release.",m->uid); sustGateV[ch] += 1; if( sustV[ch] == NULL ) sustV[ch] = m; } else // This is a sustain-pedal up msg if( cmMidiFileIsSustainPedalUp(m) ) { // if the sustain channel is already up if( sustGateV[ch]==0 ) cmErrWarnMsg(&p->err,kSustainPedalMfRC,"%i : The sustain pedal release message was received with no previous pedal down.",m->uid); if( sustGateV[ch] >= 1 ) { sustGateV[ch] -= 1; if( sustGateV[ch] == 0 ) { unsigned k = ch*kMidiNoteCnt; // for each sounding note on this channel for(; ku.chMsgPtr)->end = m; // set the pedal-up msg ptr. in the pedal-down msg. sustV[ch] = NULL; } } } } else // This is a sostenuto pedal-down msg if( cmMidiFileIsSostenutoPedalDown(m) ) { // if the sustain channel is already down //if( sostGateV[ch] ) // cmErrWarnMsg(&p->err,kSostenutoPedalMfRC,"%i : The sostenuto pedal went down twice with no intervening release.",m->uid); // record the notes that are active when the sostenuto pedal went down unsigned k = ch * kMidiNoteCnt; for(i=0; i 0; sostGateV[ch] += 1; } else // This is a sostenuto pedal-up msg if( cmMidiFileIsSostenutoPedalUp(m) ) { // if the sustain channel is already up if( sostGateV[ch]==0 ) cmErrWarnMsg(&p->err,kSostenutoPedalMfRC,"%i : The sostenuto pedal release message was received with no previous pedal down.",m->uid); if( sostGateV[ch] >= 1 ) { sostGateV[ch] -= 1; if( sostGateV[ch] == 0 ) { unsigned k = ch*kMidiNoteCnt; // for each note on this channel for(; ku.chMsgPtr)->end = m; // set the pedal-up msg ptr. in the pedal-down msg. sostV[ch] = NULL; } } } } } // for each midi file event } void cmMidiFileSetDelay( cmMidiFileH_t h, unsigned ticks ) { _cmMidiFile_t* p; unsigned mi; if((p = _cmMidiFileHandleToPtr(h)) == NULL ) return; if( p->msgN == 0 ) return; for(mi=0; mimsgN; ++mi) { cmMidiTrackMsg_t* mp = p->msgV[mi]; // locate the first msg which has a non-zero delta tick if( mp->dtick > 0 ) { mp->dtick = ticks; break; } } } unsigned cmMidiFilePackTrackMsgBufByteCount( const cmMidiTrackMsg_t* m ) { return sizeof(cmMidiTrackMsg_t) + m->byteCnt; } cmMidiTrackMsg_t* cmMidiFilePackTrackMsg( const cmMidiTrackMsg_t* m, void* buf, unsigned bufByteCnt ) { unsigned n = sizeof(cmMidiTrackMsg_t) + m->byteCnt; if( n < bufByteCnt ) { assert(0); return NULL; } // copy the cmMidiTrackMsg_t into the buffer memcpy(buf, m, sizeof(cmMidiTrackMsg_t)); if( m->byteCnt > 0 ) { // copy any linked data into the buffer memcpy(buf + sizeof(cmMidiTrackMsg_t), m->u.voidPtr, m->byteCnt ); // fixup the linked data ptr cmMidiTrackMsg_t* mp = (cmMidiTrackMsg_t*)buf; mp->u.voidPtr = buf + sizeof(cmMidiTrackMsg_t); } return (cmMidiTrackMsg_t*)buf; } void _cmMidiFilePrintHdr( const _cmMidiFile_t* mfp, cmRpt_t* rpt ) { if( mfp->fn != NULL ) cmRptPrintf(rpt,"%s ",mfp->fn); cmRptPrintf(rpt,"fmt:%i ticksPerQN:%i tracks:%i\n",mfp->fmtId,mfp->ticksPerQN,mfp->trkN); cmRptPrintf(rpt," UID dtick atick amicro type ch D0 D1\n"); cmRptPrintf(rpt,"----- ---------- ---------- ---------- : ---- --- --- ---\n"); } void _cmMidiFilePrintMsg( cmRpt_t* rpt, const cmMidiTrackMsg_t* tmp ) { cmRptPrintf(rpt,"%5i %10u %10llu %10llu : ", tmp->uid, tmp->dtick, tmp->atick, tmp->amicro ); if( tmp->status == kMetaStId ) { cmRptPrintf(rpt,"%s ", cmMidiMetaStatusToLabel(tmp->metaId)); } else { cmRptPrintf(rpt,"%4s %3i %3i %3i", cmMidiStatusToLabel(tmp->status), tmp->u.chMsgPtr->ch, tmp->u.chMsgPtr->d0, tmp->u.chMsgPtr->d1); } if( cmMidiIsChStatus(tmp->status) && cmMidiIsNoteOn(tmp->status) && (tmp->u.chMsgPtr->d1>0) ) cmRptPrintf(rpt," %4s ",cmMidiToSciPitch(tmp->u.chMsgPtr->d0,NULL,0)); cmRptPrintf(rpt,"\n"); } void cmMidiFilePrintMsgs( cmMidiFileH_t h, cmRpt_t* rpt ) { const _cmMidiFile_t* p = _cmMidiFileHandleToPtr(h); unsigned mi; _cmMidiFilePrintHdr(p,rpt); for(mi=0; mimsgN; ++mi) { cmMidiTrackMsg_t* mp = p->msgV[mi]; if( mp != NULL ) _cmMidiFilePrintMsg(rpt,mp); } } void cmMidiFilePrintTracks( cmMidiFileH_t h, unsigned trkIdx, cmRpt_t* rpt ) { const _cmMidiFile_t* mfp = _cmMidiFileHandleToPtr(h); _cmMidiFilePrintHdr(mfp,rpt); int i = trkIdx == cmInvalidIdx ? 0 : trkIdx; int n = trkIdx == cmInvalidIdx ? mfp->trkN : trkIdx+1; for(; itrkV[i].base; while( tmp != NULL ) { _cmMidiFilePrintMsg(rpt,tmp); tmp = tmp->link; } } } void cmMidiFileTestPrint( void* printDataPtr, const char* fmt, va_list vl ) { vprintf(fmt,vl); } cmMfRC_t cmMidiFileGenPlotFile( cmCtx_t* ctx, const cmChar_t* midiFn, const cmChar_t* outFn ) { cmMfRC_t rc = kOkMfRC; cmMidiFileH_t mfH = cmMidiFileNullHandle; cmFileH_t fH = cmFileNullHandle; unsigned i = 0; const cmMidiTrackMsg_t** m = NULL; unsigned mN = 0; if((rc = cmMidiFileOpen(ctx, &mfH, midiFn )) != kOkMfRC ) return cmErrMsg(&ctx->err,rc,"The MIDI file object could not be opened from '%s'.",cmStringNullGuard(midiFn)); _cmMidiFile_t* p = _cmMidiFileHandleToPtr(mfH); if( (m = cmMidiFileMsgArray(mfH)) == NULL || (mN = cmMidiFileMsgCount(mfH)) == 0 ) { rc = cmErrMsg(&p->err,kFileFailMfRC,"The MIDI file object appears to be empty."); goto errLabel; } cmMidiFileCalcNoteDurations( mfH ); if( cmFileOpen(&fH,outFn,kWriteFileFl,p->err.rpt) != kOkFileRC ) return cmErrMsg(&p->err,kFileFailMfRC,"Unable to create the file '%s'.",cmStringNullGuard(outFn)); for(i=0; istatus) && cmMidiIsNoteOn(m[i]->status) && (m[i]->u.chMsgPtr->d1>0) ) cmFilePrintf(fH,"n %f %f %i %s\n",m[i]->amicro/1000000.0,m[i]->u.chMsgPtr->durMicros/1000000.0,m[i]->uid,cmMidiToSciPitch(m[i]->u.chMsgPtr->d0,NULL,0)); errLabel: cmMidiFileClose(&mfH); cmFileClose(&fH); return rc; } void cmMidiFilePrintControlNumbers( cmCtx_t* ctx, const char* fn ) { cmMidiFileH_t h = cmMidiFileNullHandle; cmMfRC_t rc; if((rc = cmMidiFileOpen(ctx, &h, fn )) != kOkMfRC ) { cmErrMsg(&ctx->err,rc,"MIDI file open failed on '%s'.",fn); goto errLabel; } const cmMidiTrackMsg_t** mm; unsigned n = cmMidiFileMsgCount(h); if((mm = cmMidiFileMsgArray(h)) != NULL ) { unsigned j; for(j=0; jstatus == kCtlMdId && m->u.chMsgPtr->d0==66 ) printf("%i %i\n",m->u.chMsgPtr->d0,m->u.chMsgPtr->d1); } } errLabel: cmMidiFileClose(&h); } void cmMidiFileTest( const char* fn, cmCtx_t* ctx ) { cmMfRC_t rc; cmMidiFileH_t h = cmMidiFileNullHandle; if((rc = cmMidiFileOpen(ctx,&h,fn)) != kOkMfRC ) { printf("Error:%i Unable to open the cmMidi file: %s\n",rc,fn); return; } cmMidiFileCalcNoteDurations( h ); if( 1 ) { //cmMidiFileTickToMicros( h ); //cmMidiFileTickToSamples(h,96000,false); cmMidiFilePrintMsgs(h,&ctx->rpt); } if( 0 ) { //cmMidiFilePrint(h,cmMidiFileTrackCount(h)-1,&ctx->rpt); //cmMidiFilePrint(h,cmInvalidIdx,&ctx->rpt); cmMidiFilePrintControlNumbers(ctx, fn ); } if( 0 ) { printf("Tracks:%i\n",cmMidiFileTrackCount(h)); unsigned i = 0; for(i=0; istatus==kMetaStId && tmp->metaId == kTempoMdId ) { double bpm = 60000000.0/tmp->u.iVal; printf("Tempo:%i %f\n",tmp->u.iVal,bpm); tmp->u.iVal = floor( 60000000.0/69.0 ); break; } } cmMidiFileWrite(h,"/home/kevin/temp/test0.mid"); } cmMidiFileClose(&h); }