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cmMidiFile.h/c : Added cmMidiFileIsSustainPedal???() and cmMidiFileIsSostenutoPedal???().

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Added new version of cmMidiFileCalcNodeDuration() which respects sostenuto pedal.
This commit is contained in:
kevin 2016-05-18 13:11:36 -04:00
parent cd51601349
commit 2bc5274ef3
2 changed files with 93 additions and 47 deletions
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104
cmMidiFile.c
View File

@ -11,6 +11,9 @@
#include "cmMidi.h"
#include "cmMidiFile.h"
#include "cmFloatTypes.h"
#include "cmVectOps.h"
#ifdef cmBIG_ENDIAN
#define mfSwap16(v) (v)
#define mfSwap32(v) (v)
@ -1194,7 +1197,7 @@ void _cmMidiFileCalcNoteDurationsAllocVoice( _cmMidiVoice_t** listPtrPtr, cmMid
*listPtrPtr = vp;
}
void cmMidiFileCalcNoteDurations( cmMidiFileH_t h )
void cmMidiFileCalcNoteDurations2( cmMidiFileH_t h )
{
_cmMidiFile_t* p;
@ -1335,7 +1338,20 @@ void cmMidiFileCalcNoteDurations( cmMidiFileH_t h )
}
}
void cmMidiFileCalcNoteDurations2( cmMidiFileH_t h )
bool _cmMidiFileCalcNoteDur( cmMidiTrackMsg_t* m0, cmMidiTrackMsg_t* m1, bool noteGateFl, bool 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 || sustainGateFl || sostGateFl )
return false; // ... do nothing
// calculate the duration of the sounding note
((cmMidiChMsg_t*)m0->u.chMsgPtr)->durMicros = m1->amicro - m0->amicro;
return true;
}
void cmMidiFileCalcNoteDurations( cmMidiFileH_t h )
{
_cmMidiFile_t* p;
@ -1348,10 +1364,12 @@ void cmMidiFileCalcNoteDurations2( cmMidiFileH_t h )
unsigned mi = cmInvalidId;
cmMidiTrackMsg_t* noteM[ kMidiNoteCnt * kMidiChCnt ]; // ptr to note-on or NULL if the note is not sounding
bool noteGateM[ kMidiNoteCnt * kMidiChCnt ]; // true if the associated note key is depressed
bool sustV[kMidiChCnt]; //
bool sostV[kMidiChCnt]; //
bool sostGateM[ kMidiNoteCnt * kMidiChCnt ]; // true if the associated note was active when the sost. pedal went down
bool sustV[kMidiChCnt]; // true if the associated sustain pedal is down
bool sostV[kMidiChCnt]; // true if the associated sostenuto pedal is down
unsigned i,j;
// initialize the state tracking variables
for(i=0; i<kMidiChCnt; ++i)
{
sustV[i] = false;
@ -1360,106 +1378,132 @@ void cmMidiFileCalcNoteDurations2( cmMidiFileH_t h )
{
noteM[ i*kMidiNoteCnt + j ] = NULL;
noteGateM[ i*kMidiNoteCnt + j ] = false;
sostGateM[ i*kMidiNoteCnt + j ] = false;
}
}
// for each midi event
for(mi=0; mi<p->msgN; ++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;
cmMidiByte_t d0 = m->u.chMsgPtr->d0;
cmMidiByte_t d1 = m->u.chMsgPtr->d1;
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;
cmMidiTrackMsg_t* m0 = noteM[k];
// a key was pressed - so it should not be currently down
if( noteGateM[k] )
{
assert( m0 != NULL );
cmErrWarnMsg(&p->err,kMissingNoteOffMfRC,"Missing note-off for note-on:%s",cmMidiToSciPitch(d0,NULL,0));
}
// there should be no existing sounding note instance for this pitch
if( noteM[k] != NULL )
cmErrWarnMsg(&p->err,kMissingNoteOffMfRC,"Missing note-off instance for note on:%s",cmMidiToSciPitch(d0,NULL,0));
noteM[k] = m;
noteGateM[k] = true;
}
else
// if this is a note-off msg
if( cmMidiFileIsNoteOff(m) )
{
unsigned k = ch*kMidiNoteCnt + d0;
cmMidiTrackMsg_t* m0 = noteM[k];
// a key was released - so it should not be currently up
if( noteGateM[k]==false )
if( m0 == NULL )
cmErrWarnMsg(&p->err,kMissingNoteOffMfRC,"Missing note-on instance for note-off:%s",cmMidiToSciPitch(d0,NULL,0));
else
{
assert( m0 != NULL );
// a key was released - so it should not already be up
if( noteGateM[k]==false )
cmErrWarnMsg(&p->err,kMissingNoteOffMfRC,"Missing note-on for note-off:%s",cmMidiToSciPitch(d0,NULL,0));
}
// FIX: release note here - if pedal is not down
noteGateM[k] = false; // update the note gate state
// update the sounding note status
if( _cmMidiFileCalcNoteDur(m0, m, noteGateM[k], sustV[ch], sostGateM[k]) )
noteM[k] = NULL;
noteGateM[k] = false;
}
}
else
// This is a sustain-pedal down msg
if( cmMidiFileIsSustainPedalDown(m) )
{
// if the sustain channel is already down
if( sustV[ch] )
{
cmErrWarnMsg(&p->err,kSustainPedalMfRC,"The sustain pedal went down twice with no intervening release.");
}
sustV[ch] = true;
}
else
if( cmMidiFileIsSutainPedalUp(m) )
// This is a sustain-pedal up msg
if( cmMidiFileIsSustainPedalUp(m) )
{
// if the sustain channel is already up
if( sustV[ch]==false )
{
cmErrWarnMsg(&p->err,kSustainPedalMfRC,"The sustain pedal release message was received with no previous pedal down.");
}
// FIX: release sustaining notes here
sustV[ch] = false;
unsigned k = ch*kMidiNoteCnt;
// for each sounding note on this channel
for(; k<ch*kMidiNoteCnt+kMidiNoteCnt; ++k)
if( noteM[k]!=NULL && _cmMidiFileCalcNoteDur(noteM[k], m, noteGateM[k], sustV[ch], sostGateM[k]) )
noteM[k] = NULL;
}
else
// This is a sostenuto-pedal down msg
if( cmMidiFileIsSostenutoPedalDown(m) )
{
// if the sustain channel is already down
if( sostV[ch] )
{
cmErrWarnMsg(&p->err,kSostenutoPedalMfRC,"The sostenuto pedal went down twice with no intervening release.");
}
// record the notes that are active when the sostenuto pedal went down
unsigned k = ch * kMidiNoteCnt;
cmVOB_Copy( sostGateM + k, kMidiNoteCnt, noteGateM + k);
sostV[ch] = true;
}
else
// This is a sostenuto-pedal up msg
if( cmMidiFileIsSostenutoPedalUp(m) )
{
// if the sustain channel is already up
if( sostV[ch]==false )
{
cmErrWarnMsg(&p->err,kSostenutoPedalMfRC,"The sostenuto pedal release message was received with no previous pedal down.");
}
// FIX: release sostenuto notes here
sostV[ch] = false;
// for each note on this channel
unsigned k = ch*kMidiNoteCnt;
for(; k<ch*kMidiNoteCnt+kMidiNoteCnt; ++k)
{
sostGateM[k] = false;
if( noteM[k]!=NULL && _cmMidiFileCalcNoteDur(noteM[k], m, noteGateM[k], sustV[ch], sostGateM[k]) )
noteM[k] = NULL;
}
}
}
} // for each midi file event
}
void cmMidiFileSetDelay( cmMidiFileH_t h, unsigned ticks )

10
cmMidiFile.h
View File

@ -90,10 +90,12 @@ extern "C" {
#define cmMidiFileIsNoteOn(m) (cmMidiIsNoteOn((m)->status) && (m)->u.chMsgPtr->d1>0)
#define cmMidiFileIsNoteOff(m) (cmMidiIsNoteOff((m)->status,(m)->u.chMsgPtr->d1))
#define cmMidiFileIsSustainPedal(m) (cmMidiIsSustainPedal((m)->status,(m)->u.chMsgPtr->d0))
#define cmMidiFileIsSostenutoPedal(m) (cmMidiIsSostenutoPedal((m)->status,(m)->u.chMsgPtr->d0))
#define cmMidiFileIsPedalDown(m) (cmMidiIsPedalDown((m)->status, (m)->u.chMsgPtr->d0, (m)->u.chMsgPtr->d1))
#define cmMidiFileIsPedalUp(m) (cmMidiIsPedalUp( (m)->status, (m)->u.chMsgPtr->d0, (m)->u.chMsgPtr->d1))
#define cmMidiFileIsSustainPedalUp(m) (cmMidiIsSustainPedalUp( (m)->status,(m)->u.chMsgPtr->d0,(m)->u.chMsgPtr->d1))
#define cmMidiFileIsSustainPedalDown(m) (cmMidiIsSustainPedalDown( (m)->status,(m)->u.chMsgPtr->d0,(m)->u.chMsgPtr->d1))
#define cmMidiFileIsSostenutoPedalUp(m) (cmMidiIsSostenutoPedalUp( (m)->status,(m)->u.chMsgPtr->d0,(m)->u.chMsgPtr->d1))
#define cmMidiFileIsSostenutoPedalDown(m) (cmMidiIsSostenutoPedalDown((m)->status,(m)->u.chMsgPtr->d0,(m)->u.chMsgPtr->d1))
enum
{