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/*************************************************************************** |
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* * |
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* Copyright (C) 2005 Christian Schoenebeck * |
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* * |
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* This program is free software; you can redistribute it and/or modify * |
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* it under the terms of the GNU General Public License as published by * |
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* the Free Software Foundation; either version 2 of the License, or * |
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* (at your option) any later version. * |
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* * |
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* This program is distributed in the hope that it will be useful, * |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of * |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
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* GNU General Public License for more details. * |
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* * |
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* You should have received a copy of the GNU General Public License * |
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* along with this program; if not, write to the Free Software * |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, * |
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* MA 02111-1307 USA * |
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***************************************************************************/ |
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#ifndef __LS_ENGINECHANNEL_H__ |
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#define __LS_ENGINECHANNEL_H__ |
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|
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#include "../../drivers/audio/AudioOutputDevice.h" |
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#include "../../drivers/midi/midi.h" |
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#include "../../drivers/midi/MidiInputDevice.h" |
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#include "../../drivers/midi/MidiInputPort.h" |
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#include "Engine.h" |
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|
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namespace LinuxSampler { |
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|
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// just symbol prototyping |
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class AudioOutputDevice; |
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class MidiInputPort; |
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|
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/** @brief Channel Interface for LinuxSampler Sampler Engines |
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* |
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* Every sampler engine can be used on several sampler channels and |
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* usually the same Engine instance is used on multiple sampler |
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* channels. For this every sampler engine must also implement a class |
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* which handles all channel dependant parameters and channel |
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* dependant execution code. |
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* |
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* This abstract base interface class defines all mandatory methods |
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* which have to be implemented by all engine channel implementations. |
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*/ |
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class EngineChannel { |
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public: |
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|
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///////////////////////////////////////////////////////////////// |
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// abstract methods |
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// (these have to be implemented by the descendant) |
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|
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virtual void PrepareLoadInstrument(const char* FileName, uint Instrument) = 0; |
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virtual void LoadInstrument() = 0; |
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virtual void Reset() = 0; |
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virtual void SendNoteOn(uint8_t Key, uint8_t Velocity) = 0; |
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virtual void SendNoteOff(uint8_t Key, uint8_t Velocity) = 0; |
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virtual void SendPitchbend(int Pitch) = 0; |
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virtual void SendControlChange(uint8_t Controller, uint8_t Value) = 0; |
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virtual bool StatusChanged(bool bNewStatus = false) = 0; |
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virtual float Volume() = 0; |
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virtual void Volume(float f) = 0; |
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virtual uint Channels() = 0; |
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virtual void Connect(AudioOutputDevice* pAudioOut) = 0; |
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virtual void DisconnectAudioOutputDevice() = 0; |
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virtual void SetOutputChannel(uint EngineAudioChannel, uint AudioDeviceChannel) = 0; |
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virtual int OutputChannel(uint EngineAudioChannel) = 0; |
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virtual void Connect(MidiInputPort* pMidiPort, midi_chan_t MidiChannel) = 0; |
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virtual void DisconnectMidiInputPort() = 0; |
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virtual MidiInputPort* GetMidiInputPort() = 0; |
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virtual midi_chan_t MidiChannel() = 0; |
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virtual String InstrumentFileName() = 0; |
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virtual String InstrumentName() = 0; |
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virtual int InstrumentIndex() = 0; |
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virtual int InstrumentStatus() = 0; |
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virtual Engine* GetEngine() = 0; |
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virtual String EngineName() = 0; |
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|
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int iSamplerChannelIndex; ///< FIXME: nasty hack, might be removed (should be 'virtual EngineChannel* EngineChannel() = 0;', but due to cyclic dependencies only a void* solution would be possible ATM) |
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|
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protected: |
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virtual ~EngineChannel() {}; // MUST only be destroyed by EngineChannelFactory |
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friend class EngineChannelFactory; |
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}; |
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|
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} // namespace LinuxSampler |
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|
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#endif // __LS_ENGINECHANNEL_H__ |
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