engines/gig/EngineChannel.h

/***************************************************************************
 *                                                                         *
 *   LinuxSampler - modular, streaming capable sampler                     *
 *                                                                         *
 *   Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck   *
 *   Copyright (C) 2005 - 2008 Christian Schoenebeck                       *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 *   This program is distributed in the hope that it will be useful,       *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
 *   GNU General Public License for more details.                          *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this program; if not, write to the Free Software           *
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston,                 *
 *   MA  02111-1307  USA                                                   *
 ***************************************************************************/

#ifndef __LS_GIG_ENGINECHANNEL_H__
#define __LS_GIG_ENGINECHANNEL_H__

#include "../common/Event.h"
#include "../EngineChannel.h"
#include "../../common/RingBuffer.h"
#include "../../drivers/audio/AudioChannel.h"
#include "EngineGlobals.h"
#include "Engine.h"
#include "Voice.h"
#include "InstrumentResourceManager.h"

namespace LinuxSampler { namespace gig {

    // just symbol prototyping
    class midi_key_info_t;
    class Voice;

    /** @brief Engine Channel of a gig::Engine
     *
     * Encapsulates a engine channel for the Gigasampler format capable
     * sampler engine.
     */
    class EngineChannel : public LinuxSampler::EngineChannel, public InstrumentConsumer {
        public:
            EngineChannel();
            virtual ~EngineChannel();

            // implementation of abstract methods derived from interface class 'LinuxSampler::EngineChannel'
            virtual void    PrepareLoadInstrument(const char* FileName, uint Instrument);
            virtual void    LoadInstrument();
            virtual void    Reset();
            virtual void    SendNoteOn(uint8_t Key, uint8_t Velocity);
            virtual void    SendNoteOn(uint8_t Key, uint8_t Velocity, int32_t FragmentPos);
            virtual void    SendNoteOff(uint8_t Key, uint8_t Velocity);
            virtual void    SendNoteOff(uint8_t Key, uint8_t Velocity, int32_t FragmentPos);
            virtual void    SendPitchbend(int Pitch);
            virtual void    SendPitchbend(int Pitch, int32_t FragmentPos);
            virtual void    SendControlChange(uint8_t Controller, uint8_t Value);
            virtual void    SendControlChange(uint8_t Controller, uint8_t Value, int32_t FragmentPos);
            virtual bool    StatusChanged(bool bNewStatus = false);
            virtual float   Volume();
            virtual void    Volume(float f);
            virtual uint    Channels();
            virtual void    Connect(AudioOutputDevice* pAudioOut);
            virtual void    DisconnectAudioOutputDevice();
            virtual AudioOutputDevice* GetAudioOutputDevice();
            virtual void    SetOutputChannel(uint EngineAudioChannel, uint AudioDeviceChannel);
            virtual int     OutputChannel(uint EngineAudioChannel);
            virtual void    Connect(MidiInputPort* pMidiPort, midi_chan_t MidiChannel);
            virtual void    DisconnectMidiInputPort();
            virtual MidiInputPort* GetMidiInputPort();
            virtual midi_chan_t MidiChannel();
            virtual String  InstrumentFileName();
            virtual String  InstrumentName();
            virtual int     InstrumentIndex();
            virtual int     InstrumentStatus();
            virtual LinuxSampler::Engine* GetEngine();
            virtual String  EngineName();
            virtual FxSend* AddFxSend(uint8_t MidiCtrl, String Name = "") throw (Exception);
            virtual FxSend* GetFxSend(uint FxSendIndex);
            virtual uint    GetFxSendCount();
            virtual void    RemoveFxSend(FxSend* pFxSend);

            // implementation of abstract methods derived from interface class 'InstrumentConsumer'
            virtual void ResourceToBeUpdated(::gig::Instrument* pResource, void*& pUpdateArg);
            virtual void ResourceUpdated(::gig::Instrument* pOldResource, ::gig::Instrument* pNewResource, void* pUpdateArg);
            virtual void OnResourceProgress(float fProgress);

        //protected:
            Engine*                 pEngine;
            AudioChannel*           pChannelLeft;             ///< encapsulates the audio rendering buffer (left)
            AudioChannel*           pChannelRight;            ///< encapsulates the audio rendering buffer (right)
            int                     AudioDeviceChannelLeft;   ///< audio device channel number to which the left channel is connected to
            int                     AudioDeviceChannelRight;  ///< audio device channel number to which the right channel is connected to
            MidiInputPort*          pMidiInputPort;           ///< Points to the connected MIDI input port or NULL if none assigned.
            midi_chan_t             midiChannel;              ///< MIDI channel(s) on which this engine channel listens to.
            RingBuffer<Event,false>* pEventQueue;             ///< Input event queue.
            RTList<Event>*          pEvents;                  ///< All engine channel specific events for the current audio fragment.
            uint8_t                 ControllerTable[129];     ///< Reflects the current values (0-127) of all MIDI controllers for this engine / sampler channel. Number 128 is for channel pressure (mono aftertouch).
            midi_key_info_t*        pMIDIKeyInfo;             ///< Contains all active voices sorted by MIDI key number and other informations to the respective MIDI key
            Pool<uint>*             pActiveKeys;              ///< Holds all keys in it's allocation list with active voices.
            std::map<uint,uint*>    ActiveKeyGroups;          ///< Contains active keys (in case they belong to a key group) ordered by key group ID.
            ::gig::Instrument*      pInstrument;
            bool                    SustainPedal;             ///< true if sustain pedal is down
            bool                    SostenutoPedal;           ///< true if sostenuto pedal is down
            bool                    SoloMode;                 ///< in Solo Mode we only play one voice (group) at a time
            int                     SoloKey;                  ///< Currently 'active' solo key, that is the key to which the currently sounding voice belongs to (only if SoloMode is enabled)
            bool                    PortamentoMode;           ///< in Portamento Mode we slide the pitch from the last note to the current note.
            float                   PortamentoTime;           ///< How long it will take to glide from the previous note to the current (in seconds)
            float                   PortamentoPos;            ///< Current position on the keyboard, that is integer and fractional part (only used if PortamentoMode is on)
            double                  GlobalVolume;             ///< Master volume factor set through the C++ API / LSCP (a value < 1.0 means attenuation, a value > 1.0 means amplification)
            double                  MidiVolume;               ///< Volume factor altered by MIDI CC#7 (a value < 1.0 means attenuation, a value > 1.0 means amplification)
            float                   GlobalPanLeft;
            float                   GlobalPanRight;
            int                     Pitch;                    ///< Current (absolute) MIDI pitch value.
            float                   CurrentKeyDimension;      ///< Current value (0-1.0) for the keyboard dimension, altered by pressing a keyswitching key.
            String                  InstrumentFile;
            int                     InstrumentIdx;
            String                  InstrumentIdxName;
            int                     InstrumentStat;
            int                     iEngineIndexSelf;         ///< Reflects the index of this EngineChannel in the Engine's ArrayList.
            bool                    bStatusChanged;           ///< true in case an engine parameter has changed (e.g. new instrument, another volumet)
            std::vector<FxSend*>    fxSends;
            int                     GlobalTranspose;          ///< amount of semi tones all notes should be transposed

            /// Command used by the instrument loader thread to
            /// request an instrument change on a channel.
            struct instrument_change_command_t {
                bool bChangeInstrument;                             ///< Set to true by the loader when the channel should change instrument.
                ::gig::Instrument* pInstrument;                     ///< The new instrument. Also used by the loader to read the previously loaded instrument.
                RTList< ::gig::DimensionRegion*>* pDimRegionsInUse; ///< List of dimension regions in use by the currently loaded instrument. Continuously updated by the audio thread.
            };
            SynchronizedConfig<instrument_change_command_t> InstrumentChangeCommand;
            SynchronizedConfig<instrument_change_command_t>::Reader InstrumentChangeCommandReader;

            RTList< ::gig::DimensionRegion*>* pDimRegionsInUse;     ///< temporary pointer into the instrument change command, used by the audio thread

            void ResetControllers();
            void ClearEventLists();
            void ImportEvents(uint Samples);

            friend class Engine;
            friend class Voice;
            friend class InstrumentResourceManager;

        private:
            void ResetInternal();
            void RemoveAllFxSends();
            instrument_change_command_t& ChangeInstrument(::gig::Instrument* pInstrument);
    };

}} // namespace LinuxSampler::gig

#endif // __LS_GIG_ENGINECHANNEL_H__
1	schoenebeck	411	/***************************************************************************
2			* *
3			* LinuxSampler - modular, streaming capable sampler *
4			* *
5			* Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck *
6	persson	1646	* Copyright (C) 2005 - 2008 Christian Schoenebeck *
7	schoenebeck	411	* *
8			* This program is free software; you can redistribute it and/or modify *
9			* it under the terms of the GNU General Public License as published by *
10			* the Free Software Foundation; either version 2 of the License, or *
11			* (at your option) any later version. *
12			* *
13			* This program is distributed in the hope that it will be useful, *
14			* but WITHOUT ANY WARRANTY; without even the implied warranty of *
15			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
16			* GNU General Public License for more details. *
17			* *
18			* You should have received a copy of the GNU General Public License *
19			* along with this program; if not, write to the Free Software *
20			* Foundation, Inc., 59 Temple Place, Suite 330, Boston, *
21			* MA 02111-1307 USA *
22			***************************************************************************/
23
24			#ifndef __LS_GIG_ENGINECHANNEL_H__
25			#define __LS_GIG_ENGINECHANNEL_H__
26
27			#include "../common/Event.h"
28	schoenebeck	890	#include "../EngineChannel.h"
29	persson	840	#include "../../common/RingBuffer.h"
30	schoenebeck	1001	#include "../../drivers/audio/AudioChannel.h"
31	schoenebeck	411	#include "EngineGlobals.h"
32			#include "Engine.h"
33	schoenebeck	412	#include "Voice.h"
34	schoenebeck	411	#include "InstrumentResourceManager.h"
35
36			namespace LinuxSampler { namespace gig {
37
38	schoenebeck	412	// just symbol prototyping
39	schoenebeck	411	class midi_key_info_t;
40	schoenebeck	412	class Voice;
41	schoenebeck	411
42	schoenebeck	563	/** @brief Engine Channel of a gig::Engine
43			*
44			* Encapsulates a engine channel for the Gigasampler format capable
45			* sampler engine.
46			*/
47	schoenebeck	411	class EngineChannel : public LinuxSampler::EngineChannel, public InstrumentConsumer {
48			public:
49			EngineChannel();
50	schoenebeck	460	virtual ~EngineChannel();
51
52	schoenebeck	411	// implementation of abstract methods derived from interface class 'LinuxSampler::EngineChannel'
53			virtual void PrepareLoadInstrument(const char* FileName, uint Instrument);
54			virtual void LoadInstrument();
55	schoenebeck	670	virtual void Reset();
56	schoenebeck	411	virtual void SendNoteOn(uint8_t Key, uint8_t Velocity);
57	schoenebeck	906	virtual void SendNoteOn(uint8_t Key, uint8_t Velocity, int32_t FragmentPos);
58	schoenebeck	411	virtual void SendNoteOff(uint8_t Key, uint8_t Velocity);
59	schoenebeck	906	virtual void SendNoteOff(uint8_t Key, uint8_t Velocity, int32_t FragmentPos);
60	schoenebeck	411	virtual void SendPitchbend(int Pitch);
61	schoenebeck	906	virtual void SendPitchbend(int Pitch, int32_t FragmentPos);
62	schoenebeck	460	virtual void SendControlChange(uint8_t Controller, uint8_t Value);
63	schoenebeck	906	virtual void SendControlChange(uint8_t Controller, uint8_t Value, int32_t FragmentPos);
64	schoenebeck	670	virtual bool StatusChanged(bool bNewStatus = false);
65	schoenebeck	411	virtual float Volume();
66			virtual void Volume(float f);
67			virtual uint Channels();
68			virtual void Connect(AudioOutputDevice* pAudioOut);
69			virtual void DisconnectAudioOutputDevice();
70	schoenebeck	1001	virtual AudioOutputDevice* GetAudioOutputDevice();
71	schoenebeck	411	virtual void SetOutputChannel(uint EngineAudioChannel, uint AudioDeviceChannel);
72			virtual int OutputChannel(uint EngineAudioChannel);
73	schoenebeck	675	virtual void Connect(MidiInputPort* pMidiPort, midi_chan_t MidiChannel);
74			virtual void DisconnectMidiInputPort();
75			virtual MidiInputPort* GetMidiInputPort();
76			virtual midi_chan_t MidiChannel();
77	schoenebeck	411	virtual String InstrumentFileName();
78			virtual String InstrumentName();
79			virtual int InstrumentIndex();
80			virtual int InstrumentStatus();
81	schoenebeck	460	virtual LinuxSampler::Engine* GetEngine();
82	schoenebeck	475	virtual String EngineName();
83	schoenebeck	1001	virtual FxSend* AddFxSend(uint8_t MidiCtrl, String Name = "") throw (Exception);
84			virtual FxSend* GetFxSend(uint FxSendIndex);
85			virtual uint GetFxSendCount();
86			virtual void RemoveFxSend(FxSend* pFxSend);
87	schoenebeck	411
88			// implementation of abstract methods derived from interface class 'InstrumentConsumer'
89			virtual void ResourceToBeUpdated(::gig::Instrument* pResource, void*& pUpdateArg);
90			virtual void ResourceUpdated(::gig::Instrument* pOldResource, ::gig::Instrument* pNewResource, void* pUpdateArg);
91	schoenebeck	517	virtual void OnResourceProgress(float fProgress);
92	schoenebeck	460
93			//protected:
94	schoenebeck	411	Engine* pEngine;
95	schoenebeck	1001	AudioChannel* pChannelLeft; ///< encapsulates the audio rendering buffer (left)
96			AudioChannel* pChannelRight; ///< encapsulates the audio rendering buffer (right)
97	schoenebeck	411	int AudioDeviceChannelLeft; ///< audio device channel number to which the left channel is connected to
98			int AudioDeviceChannelRight; ///< audio device channel number to which the right channel is connected to
99	schoenebeck	675	MidiInputPort* pMidiInputPort; ///< Points to the connected MIDI input port or NULL if none assigned.
100			midi_chan_t midiChannel; ///< MIDI channel(s) on which this engine channel listens to.
101	schoenebeck	970	RingBuffer<Event,false>* pEventQueue; ///< Input event queue.
102	schoenebeck	460	RTList<Event>* pEvents; ///< All engine channel specific events for the current audio fragment.
103	persson	903	uint8_t ControllerTable[129]; ///< Reflects the current values (0-127) of all MIDI controllers for this engine / sampler channel. Number 128 is for channel pressure (mono aftertouch).
104	schoenebeck	411	midi_key_info_t* pMIDIKeyInfo; ///< Contains all active voices sorted by MIDI key number and other informations to the respective MIDI key
105	schoenebeck	460	Pool<uint>* pActiveKeys; ///< Holds all keys in it's allocation list with active voices.
106	schoenebeck	411	std::map<uint,uint*> ActiveKeyGroups; ///< Contains active keys (in case they belong to a key group) ordered by key group ID.
107			::gig::Instrument* pInstrument;
108			bool SustainPedal; ///< true if sustain pedal is down
109	iliev	776	bool SostenutoPedal; ///< true if sostenuto pedal is down
110	schoenebeck	829	bool SoloMode; ///< in Solo Mode we only play one voice (group) at a time
111			int SoloKey; ///< Currently 'active' solo key, that is the key to which the currently sounding voice belongs to (only if SoloMode is enabled)
112			bool PortamentoMode; ///< in Portamento Mode we slide the pitch from the last note to the current note.
113			float PortamentoTime; ///< How long it will take to glide from the previous note to the current (in seconds)
114			float PortamentoPos; ///< Current position on the keyboard, that is integer and fractional part (only used if PortamentoMode is on)
115	schoenebeck	947	double GlobalVolume; ///< Master volume factor set through the C++ API / LSCP (a value < 1.0 means attenuation, a value > 1.0 means amplification)
116			double MidiVolume; ///< Volume factor altered by MIDI CC#7 (a value < 1.0 means attenuation, a value > 1.0 means amplification)
117	schoenebeck	424	float GlobalPanLeft;
118			float GlobalPanRight;
119	schoenebeck	411	int Pitch; ///< Current (absolute) MIDI pitch value.
120	persson	865	float CurrentKeyDimension; ///< Current value (0-1.0) for the keyboard dimension, altered by pressing a keyswitching key.
121	schoenebeck	411	String InstrumentFile;
122			int InstrumentIdx;
123			String InstrumentIdxName;
124	schoenebeck	412	int InstrumentStat;
125	schoenebeck	460	int iEngineIndexSelf; ///< Reflects the index of this EngineChannel in the Engine's ArrayList.
126	schoenebeck	660	bool bStatusChanged; ///< true in case an engine parameter has changed (e.g. new instrument, another volumet)
127	schoenebeck	1001	std::vector<FxSend*> fxSends;
128	schoenebeck	1041	int GlobalTranspose; ///< amount of semi tones all notes should be transposed
129	schoenebeck	411
130	persson	1646	/// Command used by the instrument loader thread to
131			/// request an instrument change on a channel.
132			struct instrument_change_command_t {
133			bool bChangeInstrument; ///< Set to true by the loader when the channel should change instrument.
134			::gig::Instrument* pInstrument; ///< The new instrument. Also used by the loader to read the previously loaded instrument.
135			RTList< ::gig::DimensionRegion> pDimRegionsInUse; ///< List of dimension regions in use by the currently loaded instrument. Continuously updated by the audio thread.
136			};
137			SynchronizedConfig<instrument_change_command_t> InstrumentChangeCommand;
138			SynchronizedConfig<instrument_change_command_t>::Reader InstrumentChangeCommandReader;
139
140			RTList< ::gig::DimensionRegion> pDimRegionsInUse; ///< temporary pointer into the instrument change command, used by the audio thread
141
142	schoenebeck	473	void ResetControllers();
143	schoenebeck	460	void ClearEventLists();
144			void ImportEvents(uint Samples);
145
146	schoenebeck	411	friend class Engine;
147			friend class Voice;
148			friend class InstrumentResourceManager;
149	schoenebeck	460
150	schoenebeck	411	private:
151			void ResetInternal();
152	schoenebeck	1001	void RemoveAllFxSends();
153	persson	1646	instrument_change_command_t& ChangeInstrument(::gig::Instrument* pInstrument);
154	schoenebeck	411	};
155
156			}} // namespace LinuxSampler::gig
157
158			#endif // __LS_GIG_ENGINECHANNEL_H__