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cmMidiFile.c/h Added __cplusplus guards. Convert Note-on 0 vel. to Note-Off

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This commit is contained in:
kpl 2012-11-14 20:03:30 -08:00
parent e5c233132f
commit 41a33a0333
2 changed files with 28 additions and 0 deletions
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16
cmMidiFile.c
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@ -266,6 +266,10 @@ cmMfRC_t _cmMidiFileReadChannelMsg( _cmMidiFile_t* mfp, cmMidiByte_t* rsPtr, cmM
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;
@ -833,13 +837,23 @@ void cmMidiFileCalcNoteDurations( cmMidiFileH_t h )
_cmMidiVoice_t* vp;
bool sustainFlagV[ kMidiChCnt ];
for(mi=0; mi<kMidiChCnt; ++mi)
sustainFlagV[mi]=false;
for(mi=0; mi<p->msgN; ++mi)
{
cmMidiTrackMsg_t* mp = p->msgV[mi];
// update the duration of the sounding notes
//int ii=0;
//printf("---- %i ------\n",mi);
for(vp = list; vp!=NULL; vp=vp->link)
{
vp->durTicks += mp->dtick;
//printf("%i %i %p %p\n",ii,vp->sustainFl,vp,vp->link);
//++ii;
}
//
// If this is sustain pedal msg
@ -894,6 +908,8 @@ void cmMidiFileCalcNoteDurations( cmMidiFileH_t h )
// if this active voice ch/pitch matches the note-off msg ch pitch
if( (vp->mp->u.chMsgPtr->d0==mp->u.chMsgPtr->d0) && (vp->mp->u.chMsgPtr->ch==mp->u.chMsgPtr->ch) )
{
assert( mp->u.chMsgPtr->ch < kMidiChCnt );
if( sustainFlagV[mp->u.chMsgPtr->ch] )
vp->sustainFl = true;
else

12
cmMidiFile.h
View File

@ -1,6 +1,10 @@
#ifndef cmMidiFile_h
#define cmMidiFile_h
#ifdef __cplusplus
extern "C" {
#endif
// MIDI file timing:
// Messages in the MIDI file are time tagged with a delta offset in 'ticks'
// from the previous message in the same track.
@ -15,6 +19,10 @@
// MpQN is given as the value of the MIDI file tempo message.
//
// See cmMidiFileSeekUSecs() for an example of converting ticks to milliseconds.
//
// As part of the file reading process, the status byte of note-on messages
// with velocity=0 are is changed to a note-off message. See _cmMidiFileReadChannelMsg().
typedef cmHandle_t cmMidiFileH_t;
@ -160,4 +168,8 @@ void cmMidiFilePrint( cmMidiFileH_t h, unsigned trkIdx, cmRpt_t
bool cmMidiFileIsNull( cmMidiFileH_t h );
void cmMidiFileTest( const char* fn, cmCtx_t* ctx );
#ifdef __cplusplus
}
#endif
#endif