/[svn]/linuxsampler/trunk/src/engines/gig/EngineChannel.h
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revision 411 by schoenebeck, Sat Feb 26 02:01:14 2005 UTC revision 1686 by schoenebeck, Thu Feb 14 14:58:50 2008 UTC
# Line 3  Line 3 
3   *   LinuxSampler - modular, streaming capable sampler                     *   *   LinuxSampler - modular, streaming capable sampler                     *
4   *                                                                         *   *                                                                         *
5   *   Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck   *   *   Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck   *
6   *   Copyright (C) 2005 Christian Schoenebeck                              *   *   Copyright (C) 2005 - 2008 Christian Schoenebeck                       *
7   *                                                                         *   *                                                                         *
8   *   This program is free software; you can redistribute it and/or modify  *   *   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  *   *   it under the terms of the GNU General Public License as published by  *
# Line 24  Line 24 
24  #ifndef __LS_GIG_ENGINECHANNEL_H__  #ifndef __LS_GIG_ENGINECHANNEL_H__
25  #define __LS_GIG_ENGINECHANNEL_H__  #define __LS_GIG_ENGINECHANNEL_H__
26    
 #if DEBUG_HEADERS  
 # warning EngineChannel.h included  
 #endif // DEBUG_HEADERS  
   
27  #include "../common/Event.h"  #include "../common/Event.h"
28  #include "../common/EngineChannel.h"  #include "../EngineChannel.h"
29    #include "../../common/RingBuffer.h"
30    #include "../../common/ArrayList.h"
31    #include "../../drivers/audio/AudioChannel.h"
32  #include "EngineGlobals.h"  #include "EngineGlobals.h"
33  #include "Engine.h"  #include "Engine.h"
34    #include "Voice.h"
35  #include "InstrumentResourceManager.h"  #include "InstrumentResourceManager.h"
36    
37  namespace LinuxSampler { namespace gig {  namespace LinuxSampler { namespace gig {
38    
39        // just symbol prototyping
40      class midi_key_info_t;      class midi_key_info_t;
41        class Voice;
42    
43        /** @brief Engine Channel of a gig::Engine
44         *
45         * Encapsulates a engine channel for the Gigasampler format capable
46         * sampler engine.
47         */
48      class EngineChannel : public LinuxSampler::EngineChannel, public InstrumentConsumer {      class EngineChannel : public LinuxSampler::EngineChannel, public InstrumentConsumer {
49          public:          public:
50              EngineChannel();              EngineChannel();
51              virtual ~EngineChannel();                          virtual ~EngineChannel();
52              
53              // implementation of abstract methods derived from interface class 'LinuxSampler::EngineChannel'              // implementation of abstract methods derived from interface class 'LinuxSampler::EngineChannel'
             virtual int     RenderAudio(uint Samples);  
54              virtual void    PrepareLoadInstrument(const char* FileName, uint Instrument);              virtual void    PrepareLoadInstrument(const char* FileName, uint Instrument);
55              virtual void    LoadInstrument();              virtual void    LoadInstrument();
56                virtual void    Reset();
57              virtual void    SendNoteOn(uint8_t Key, uint8_t Velocity);              virtual void    SendNoteOn(uint8_t Key, uint8_t Velocity);
58                virtual void    SendNoteOn(uint8_t Key, uint8_t Velocity, int32_t FragmentPos);
59              virtual void    SendNoteOff(uint8_t Key, uint8_t Velocity);              virtual void    SendNoteOff(uint8_t Key, uint8_t Velocity);
60                virtual void    SendNoteOff(uint8_t Key, uint8_t Velocity, int32_t FragmentPos);
61              virtual void    SendPitchbend(int Pitch);              virtual void    SendPitchbend(int Pitch);
62              virtual void    SendControlChange(uint8_t Controller, uint8_t Value);                          virtual void    SendPitchbend(int Pitch, int32_t FragmentPos);
63                virtual void    SendControlChange(uint8_t Controller, uint8_t Value);
64                virtual void    SendControlChange(uint8_t Controller, uint8_t Value, int32_t FragmentPos);
65                virtual bool    StatusChanged(bool bNewStatus = false);
66              virtual float   Volume();              virtual float   Volume();
67              virtual void    Volume(float f);              virtual void    Volume(float f);
68              virtual uint    Channels();              virtual uint    Channels();
69              virtual void    Connect(AudioOutputDevice* pAudioOut);              virtual void    Connect(AudioOutputDevice* pAudioOut);
70              virtual void    DisconnectAudioOutputDevice();              virtual void    DisconnectAudioOutputDevice();
71                virtual AudioOutputDevice* GetAudioOutputDevice();
72              virtual void    SetOutputChannel(uint EngineAudioChannel, uint AudioDeviceChannel);              virtual void    SetOutputChannel(uint EngineAudioChannel, uint AudioDeviceChannel);
73              virtual int     OutputChannel(uint EngineAudioChannel);              virtual int     OutputChannel(uint EngineAudioChannel);
74                virtual void    Connect(MidiInputPort* pMidiPort, midi_chan_t MidiChannel);
75                virtual void    DisconnectMidiInputPort();
76                virtual MidiInputPort* GetMidiInputPort();
77                virtual midi_chan_t MidiChannel();
78              virtual String  InstrumentFileName();              virtual String  InstrumentFileName();
79              virtual String  InstrumentName();              virtual String  InstrumentName();
80              virtual int     InstrumentIndex();              virtual int     InstrumentIndex();
81              virtual int     InstrumentStatus();              virtual int     InstrumentStatus();
82              virtual LinuxSampler::Engine* GetEngine();                          virtual LinuxSampler::Engine* GetEngine();
83                virtual String  EngineName();
84                virtual FxSend* AddFxSend(uint8_t MidiCtrl, String Name = "") throw (Exception);
85                virtual FxSend* GetFxSend(uint FxSendIndex);
86                virtual uint    GetFxSendCount();
87                virtual void    RemoveFxSend(FxSend* pFxSend);
88                virtual void    Connect(VirtualMidiDevice* pDevice);
89                virtual void    Disconnect(VirtualMidiDevice* pDevice);
90    
91              // implementation of abstract methods derived from interface class 'InstrumentConsumer'              // implementation of abstract methods derived from interface class 'InstrumentConsumer'
92              virtual void ResourceToBeUpdated(::gig::Instrument* pResource, void*& pUpdateArg);              virtual void ResourceToBeUpdated(::gig::Instrument* pResource, void*& pUpdateArg);
93              virtual void ResourceUpdated(::gig::Instrument* pOldResource, ::gig::Instrument* pNewResource, void* pUpdateArg);              virtual void ResourceUpdated(::gig::Instrument* pOldResource, ::gig::Instrument* pNewResource, void* pUpdateArg);
94                            virtual void OnResourceProgress(float fProgress);
95          //protected:                        
96            //protected:
97              Engine*                 pEngine;              Engine*                 pEngine;
98              float*                  pOutputLeft;              ///< Audio output channel buffer (left)              AudioChannel*           pChannelLeft;             ///< encapsulates the audio rendering buffer (left)
99              float*                  pOutputRight;             ///< Audio output channel buffer (right)              AudioChannel*           pChannelRight;            ///< encapsulates the audio rendering buffer (right)
100              int                     AudioDeviceChannelLeft;   ///< audio device channel number to which the left channel is connected to              int                     AudioDeviceChannelLeft;   ///< audio device channel number to which the left channel is connected to
101              int                     AudioDeviceChannelRight;  ///< audio device channel number to which the right channel is connected to              int                     AudioDeviceChannelRight;  ///< audio device channel number to which the right channel is connected to
102              RingBuffer<Event>*      pEventQueue;              ///< Input event queue.              MidiInputPort*          pMidiInputPort;           ///< Points to the connected MIDI input port or NULL if none assigned.
103              uint8_t                 ControllerTable[128];     ///< Reflects the current values (0-127) of all MIDI controllers for this engine / sampler channel.                          midi_chan_t             midiChannel;              ///< MIDI channel(s) on which this engine channel listens to.
104                RingBuffer<Event,false>* pEventQueue;             ///< Input event queue.
105                RTList<Event>*          pEvents;                  ///< All engine channel specific events for the current audio fragment.
106                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).
107              midi_key_info_t*        pMIDIKeyInfo;             ///< Contains all active voices sorted by MIDI key number and other informations to the respective MIDI key              midi_key_info_t*        pMIDIKeyInfo;             ///< Contains all active voices sorted by MIDI key number and other informations to the respective MIDI key
108              Pool<uint>*             pActiveKeys;              ///< Holds all keys in it's allocation list with active voices.                          Pool<uint>*             pActiveKeys;              ///< Holds all keys in it's allocation list with active voices.
109              std::map<uint,uint*>    ActiveKeyGroups;          ///< Contains active keys (in case they belong to a key group) ordered by key group ID.              std::map<uint,uint*>    ActiveKeyGroups;          ///< Contains active keys (in case they belong to a key group) ordered by key group ID.
110              ::gig::Instrument*      pInstrument;              ::gig::Instrument*      pInstrument;
111              bool                    SustainPedal;             ///< true if sustain pedal is down              bool                    SustainPedal;             ///< true if sustain pedal is down
112              double                  GlobalVolume;             ///< overall volume (a value < 1.0 means attenuation, a value > 1.0 means amplification)              bool                    SostenutoPedal;           ///< true if sostenuto pedal is down
113                bool                    SoloMode;                 ///< in Solo Mode we only play one voice (group) at a time
114                int                     SoloKey;                  ///< Currently 'active' solo key, that is the key to which the currently sounding voice belongs to (only if SoloMode is enabled)
115                bool                    PortamentoMode;           ///< in Portamento Mode we slide the pitch from the last note to the current note.
116                float                   PortamentoTime;           ///< How long it will take to glide from the previous note to the current (in seconds)
117                float                   PortamentoPos;            ///< Current position on the keyboard, that is integer and fractional part (only used if PortamentoMode is on)
118                double                  GlobalVolume;             ///< Master volume factor set through the C++ API / LSCP (a value < 1.0 means attenuation, a value > 1.0 means amplification)
119                double                  MidiVolume;               ///< Volume factor altered by MIDI CC#7 (a value < 1.0 means attenuation, a value > 1.0 means amplification)
120                float                   GlobalPanLeft;
121                float                   GlobalPanRight;
122              int                     Pitch;                    ///< Current (absolute) MIDI pitch value.              int                     Pitch;                    ///< Current (absolute) MIDI pitch value.
123              int                     CurrentKeyDimension;      ///< Current value (0-127) for the keyboard dimension, altered by pressing a keyswitching key.              float                   CurrentKeyDimension;      ///< Current value (0-1.0) for the keyboard dimension, altered by pressing a keyswitching key.
124              String                  InstrumentFile;              String                  InstrumentFile;
125              int                     InstrumentIdx;              int                     InstrumentIdx;
126              String                  InstrumentIdxName;              String                  InstrumentIdxName;
127              int                     InstrumentStat;                          int                     InstrumentStat;
128                int                     iEngineIndexSelf;         ///< Reflects the index of this EngineChannel in the Engine's ArrayList.
129                bool                    bStatusChanged;           ///< true in case an engine parameter has changed (e.g. new instrument, another volumet)
130                std::vector<FxSend*>    fxSends;
131                int                     GlobalTranspose;          ///< amount of semi tones all notes should be transposed
132    
133                /// Command used by the instrument loader thread to
134                /// request an instrument change on a channel.
135                struct instrument_change_command_t {
136                    bool bChangeInstrument;                             ///< Set to true by the loader when the channel should change instrument.
137                    ::gig::Instrument* pInstrument;                     ///< The new instrument. Also used by the loader to read the previously loaded instrument.
138                    RTList< ::gig::DimensionRegion*>* pDimRegionsInUse; ///< List of dimension regions in use by the currently loaded instrument. Continuously updated by the audio thread.
139                };
140                SynchronizedConfig<instrument_change_command_t> InstrumentChangeCommand;
141                SynchronizedConfig<instrument_change_command_t>::Reader InstrumentChangeCommandReader;
142    
143                RTList< ::gig::DimensionRegion*>* pDimRegionsInUse;     ///< temporary pointer into the instrument change command, used by the audio thread
144    
145                SynchronizedConfig< ArrayList<VirtualMidiDevice*> > virtualMidiDevices;
146                SynchronizedConfig< ArrayList<VirtualMidiDevice*> >::Reader virtualMidiDevicesReader_AudioThread;
147                SynchronizedConfig< ArrayList<VirtualMidiDevice*> >::Reader virtualMidiDevicesReader_MidiThread;
148    
149                void ResetControllers();
150                void ClearEventLists();
151                void ImportEvents(uint Samples);
152    
153              friend class Engine;              friend class Engine;
154              friend class Voice;              friend class Voice;
155              friend class InstrumentResourceManager;              friend class InstrumentResourceManager;
156                
157          private:          private:
158              void ResetInternal();              void ResetInternal();
159                void RemoveAllFxSends();
160                instrument_change_command_t& ChangeInstrument(::gig::Instrument* pInstrument);
161      };      };
162    
163  }} // namespace LinuxSampler::gig  }} // namespace LinuxSampler::gig
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