#include <sequencer.h>
Inheritance diagram for jdkmidi::MIDISequencerTrackProcessor:
Public Member Functions | |
| MIDISequencerTrackProcessor () | |
| virtual | ~MIDISequencerTrackProcessor () |
| virtual void | Reset () |
| virtual bool | Process (MIDITimedBigMessage *msg) |
Public Attributes | |
| bool | mute |
| bool | solo |
| int | velocity_scale |
| int | rechannel |
| int | transpose |
| MIDIProcessor * | extra_proc |
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Definition at line 194 of file jdkmidi_sequencer.cpp.
00195 : 00196 mute(false), 00197 solo(false), 00198 velocity_scale(100), 00199 rechannel(-1), 00200 transpose(0), 00201 extra_proc(0) 00202 { 00203 } |
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Definition at line 206 of file jdkmidi_sequencer.cpp.
00207 {
00208 }
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Implements jdkmidi::MIDIProcessor. Definition at line 221 of file jdkmidi_sequencer.cpp. References extra_proc, jdkmidi::MIDIMessage::GetNote(), jdkmidi::MIDIMessage::GetVelocity(), jdkmidi::MIDIMessage::IsChannelMsg(), jdkmidi::MIDIMessage::IsNoOp(), jdkmidi::MIDIMessage::IsNoteOff(), jdkmidi::MIDIMessage::IsNoteOn(), jdkmidi::MIDIMessage::IsPolyPressure(), mute, jdkmidi::MIDIProcessor::Process(), rechannel, jdkmidi::MIDIMessage::SetChannel(), jdkmidi::MIDIMessage::SetNote(), jdkmidi::MIDIMessage::SetVelocity(), transpose, and velocity_scale.
00222 {
00223
00224 // are we muted?
00225
00226 if( mute )
00227 {
00228 // yes, ignore event.
00229 return false;
00230 }
00231
00232 // is the event a NoOp?
00233
00234 if( msg->IsNoOp() )
00235 {
00236 // yes, ignore event.
00237
00238 return false;
00239 }
00240
00241 // pass the event to our extra_proc if we have one
00242
00243 if( extra_proc && extra_proc->Process(msg)==false )
00244 {
00245 // extra_proc wanted to ignore this event
00246 return false;
00247 }
00248
00249 // is it a normal MIDI channel message?
00250 if( msg->IsChannelMsg() )
00251 {
00252 // yes, are we to re-channel it?
00253 if( rechannel!=-1 )
00254 {
00255 msg->SetChannel( (unsigned char)rechannel );
00256 }
00257
00258 // is it a note on message?
00259 if( msg->IsNoteOn() && msg->GetVelocity()>0 )
00260 {
00261 // yes, scale the velocity value as required
00262
00263 int vel = (int)msg->GetVelocity();
00264
00265 vel = vel*velocity_scale / 100;
00266
00267 // make sure velocity is never less than 0
00268
00269 if( vel<0 )
00270 {
00271 vel=0;
00272 }
00273
00274 // rewrite the velocity
00275
00276 msg->SetVelocity( (unsigned char)vel );
00277
00278 }
00279
00280 // is it a type of event that needs to be transposed?
00281
00282 if( msg->IsNoteOn() || msg->IsNoteOff() || msg->IsPolyPressure() )
00283 {
00284 int new_note = ((int)msg->GetNote())+transpose;
00285
00286 if( new_note>=0 && new_note<=127 )
00287 {
00288 // set new note number
00289 msg->SetNote( (unsigned char)new_note );
00290 }
00291 else
00292 {
00293 // otherwise delete this note - transposed value is out of range
00294 return false;
00295 }
00296
00297 }
00298
00299 }
00300
00301 return true;
00302 }
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Definition at line 211 of file jdkmidi_sequencer.cpp. References mute, rechannel, solo, transpose, and velocity_scale.
00212 {
00213 mute=false;
00214 solo=false;
00215 velocity_scale=100;
00216 rechannel=-1;
00217 transpose=0;
00218 }
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Definition at line 213 of file sequencer.h. |
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Definition at line 207 of file sequencer.h. |
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Definition at line 210 of file sequencer.h. |
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Definition at line 208 of file sequencer.h. |
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Definition at line 211 of file sequencer.h. |
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Definition at line 209 of file sequencer.h. |