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C++ MidiEvent::panning方法代码示例

本文整理汇总了C++中MidiEvent::panning方法的典型用法代码示例。如果您正苦于以下问题:C++ MidiEvent::panning方法的具体用法?C++ MidiEvent::panning怎么用?C++ MidiEvent::panning使用的例子?那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在MidiEvent的用法示例。


在下文中一共展示了MidiEvent::panning方法的1个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: processInEvent

void InstrumentTrack::processInEvent( const MidiEvent& event, const MidiTime& time, f_cnt_t offset )
{
	bool eventHandled = false;

	switch( event.type() )
	{
		// we don't send MidiNoteOn, MidiNoteOff and MidiKeyPressure
		// events to instrument as NotePlayHandle will send them on its
		// own
		case MidiNoteOn:
			if( event.velocity() > 0 )
			{
				NotePlayHandle* nph;
				m_notesMutex.lock();
				if( m_notes[event.key()] == NULL )
				{
					nph = NotePlayHandleManager::acquire( this, offset,
								typeInfo<f_cnt_t>::max() / 2,
								Note( MidiTime(), MidiTime(), event.key(), event.volume( midiPort()->baseVelocity() ) ),
								NULL, event.channel(),
								NotePlayHandle::OriginMidiInput );
					m_notes[event.key()] = nph;
					if( ! Engine::mixer()->addPlayHandle( nph ) )
					{
						m_notes[event.key()] = NULL;
					}
				}
				m_notesMutex.unlock();
				eventHandled = true;
				break;
			}

		case MidiNoteOff:
			m_notesMutex.lock();
			if( m_notes[event.key()] != NULL )
			{
				// do actual note off and remove internal reference to NotePlayHandle (which itself will
				// be deleted later automatically)
				m_notes[event.key()]->noteOff( offset );
				m_notes[event.key()] = NULL;
			}
			m_notesMutex.unlock();
			eventHandled = true;
			break;

		case MidiKeyPressure:
			if( m_notes[event.key()] != NULL )
			{
				// setVolume() calls processOutEvent() with MidiKeyPressure so the
				// attached instrument will receive the event as well
				m_notes[event.key()]->setVolume( event.volume( midiPort()->baseVelocity() ) );
			}
			eventHandled = true;
			break;

		case MidiPitchBend:
			// updatePitch() is connected to m_pitchModel::dataChanged() which will send out
			// MidiPitchBend events
			m_pitchModel.setValue( m_pitchModel.minValue() + event.pitchBend() * m_pitchModel.range() / MidiMaxPitchBend );
			break;

		case MidiControlChange:
			if( event.controllerNumber() == MidiControllerSustain )
			{
				if( event.controllerValue() > MidiMaxControllerValue/2 )
				{
					m_sustainPedalPressed = true;
				}
				else
				{
					m_sustainPedalPressed = false;
				}
			}
			if( event.controllerNumber() == MidiControllerAllSoundOff ||
				event.controllerNumber() == MidiControllerAllNotesOff ||
				event.controllerNumber() == MidiControllerOmniOn ||
				event.controllerNumber() == MidiControllerOmniOff ||
				event.controllerNumber() == MidiControllerMonoOn ||
				event.controllerNumber() == MidiControllerPolyOn )
			{
				silenceAllNotes();
			}
			break;

		case MidiMetaEvent:
			// handle special cases such as note panning
			switch( event.metaEvent() )
			{
				case MidiNotePanning:
					if( m_notes[event.key()] != NULL )
					{
						eventHandled = true;
						m_notes[event.key()]->setPanning( event.panning() );
					}
					break;
				default:
					qWarning( "InstrumentTrack: unhandled MIDI meta event: %i", event.metaEvent() );
					break;
			}
			break;
//.........这里部分代码省略.........
开发者ID:HDDigitizerMusic,项目名称:lmms-alt-theme,代码行数:101,代码来源:InstrumentTrack.cpp


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