/[svn]/linuxsampler/trunk/src/engines/AbstractEngineChannel.h
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revision 2317 by persson, Sun Feb 19 12:13:19 2012 UTC revision 2871 by schoenebeck, Sun Apr 10 18:22:23 2016 UTC
# Line 5  Line 5 
5   *   Copyright (C) 2003,2004 by Benno Senoner and Christian Schoenebeck    *   *   Copyright (C) 2003,2004 by Benno Senoner and Christian Schoenebeck    *
6   *   Copyright (C) 2005-2008 Christian Schoenebeck                         *   *   Copyright (C) 2005-2008 Christian Schoenebeck                         *
7   *   Copyright (C) 2009-2012 Christian Schoenebeck and Grigor Iliev        *   *   Copyright (C) 2009-2012 Christian Schoenebeck and Grigor Iliev        *
8     *   Copyright (C) 2012-2016 Christian Schoenebeck and Andreas Persson     *
9   *                                                                         *   *                                                                         *
10   *   This program is free software; you can redistribute it and/or modify  *   *   This program is free software; you can redistribute it and/or modify  *
11   *   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 30  Line 31 
31    
32  #include "../common/Pool.h"  #include "../common/Pool.h"
33  #include "../common/RingBuffer.h"  #include "../common/RingBuffer.h"
34    #include "../common/ResourceManager.h"
35    #include "common/AbstractInstrumentManager.h"
36    #include "common/InstrumentScriptVM.h"
37    
38    #define CTRL_TABLE_IDX_AFTERTOUCH   128
39    #define CTRL_TABLE_IDX_PITCHBEND    129
40    
41  namespace LinuxSampler {  namespace LinuxSampler {
42    
43      class AbstractEngineChannel: public EngineChannel {      class MidiKeyboardManagerBase;
44    
45        class AbstractEngineChannel: public EngineChannel, public InstrumentScriptConsumer {
46          public:          public:
47              // implementation of abstract methods derived from interface class 'LinuxSampler::EngineChannel'              // implementation of abstract methods derived from interface class 'LinuxSampler::EngineChannel'
48              virtual void    PrepareLoadInstrument(const char* FileName, uint Instrument);              virtual void    PrepareLoadInstrument(const char* FileName, uint Instrument) OVERRIDE;
49              virtual void    Reset();              virtual void    Reset() OVERRIDE;
50              virtual void    SendNoteOn(uint8_t Key, uint8_t Velocity, uint8_t MidiChannel);              virtual void    SendNoteOn(uint8_t Key, uint8_t Velocity, uint8_t MidiChannel) OVERRIDE;
51              virtual void    SendNoteOn(uint8_t Key, uint8_t Velocity, uint8_t MidiChannel, int32_t FragmentPos);              virtual void    SendNoteOn(uint8_t Key, uint8_t Velocity, uint8_t MidiChannel, int32_t FragmentPos) OVERRIDE;
52              virtual void    SendNoteOff(uint8_t Key, uint8_t Velocity, uint8_t MidiChannel);              virtual void    SendNoteOff(uint8_t Key, uint8_t Velocity, uint8_t MidiChannel) OVERRIDE;
53              virtual void    SendNoteOff(uint8_t Key, uint8_t Velocity, uint8_t MidiChannel, int32_t FragmentPos);              virtual void    SendNoteOff(uint8_t Key, uint8_t Velocity, uint8_t MidiChannel, int32_t FragmentPos) OVERRIDE;
54              virtual void    SendPitchbend(int Pitch, uint8_t MidiChannel);              virtual void    SendPitchbend(int Pitch, uint8_t MidiChannel) OVERRIDE;
55              virtual void    SendPitchbend(int Pitch, uint8_t MidiChannel, int32_t FragmentPos);              virtual void    SendPitchbend(int Pitch, uint8_t MidiChannel, int32_t FragmentPos) OVERRIDE;
56              virtual void    SendControlChange(uint8_t Controller, uint8_t Value, uint8_t MidiChannel);              virtual void    SendControlChange(uint8_t Controller, uint8_t Value, uint8_t MidiChannel) OVERRIDE;
57              virtual void    SendControlChange(uint8_t Controller, uint8_t Value, uint8_t MidiChannel, int32_t FragmentPos);              virtual void    SendControlChange(uint8_t Controller, uint8_t Value, uint8_t MidiChannel, int32_t FragmentPos) OVERRIDE;            
58              virtual bool    StatusChanged(bool bNewStatus = false);              virtual void    SendChannelPressure(uint8_t Value, uint8_t MidiChannel) OVERRIDE;
59              virtual float   Volume();              virtual void    SendChannelPressure(uint8_t Value, uint8_t MidiChannel, int32_t FragmentPos) OVERRIDE;
60              virtual void    Volume(float f);              virtual void    SendPolyphonicKeyPressure(uint8_t Key, uint8_t Value, uint8_t MidiChannel) OVERRIDE;
61              virtual float   Pan();              virtual void    SendPolyphonicKeyPressure(uint8_t Key, uint8_t Value, uint8_t MidiChannel, int32_t FragmentPos) OVERRIDE;
62              virtual void    Pan(float f);              virtual bool    StatusChanged(bool bNewStatus = false) OVERRIDE;
63              virtual uint    Channels();              virtual float   Volume() OVERRIDE;
64              virtual AudioOutputDevice* GetAudioOutputDevice();              virtual void    Volume(float f) OVERRIDE;
65              virtual void    SetOutputChannel(uint EngineAudioChannel, uint AudioDeviceChannel);              virtual float   Pan() OVERRIDE;
66              virtual int     OutputChannel(uint EngineAudioChannel);              virtual void    Pan(float f) OVERRIDE;
67              virtual void    Connect(MidiInputPort* pMidiPort, midi_chan_t MidiChannel);              virtual uint    Channels() OVERRIDE;
68              virtual void    DisconnectMidiInputPort();              virtual AudioOutputDevice* GetAudioOutputDevice() OVERRIDE;
69              virtual MidiInputPort* GetMidiInputPort();              virtual void    SetOutputChannel(uint EngineAudioChannel, uint AudioDeviceChannel) OVERRIDE;
70              virtual midi_chan_t MidiChannel();              virtual int     OutputChannel(uint EngineAudioChannel) OVERRIDE;
71              virtual String  InstrumentFileName();              virtual void    Connect(MidiInputPort* pMidiPort) OVERRIDE;
72              virtual String  InstrumentName();              virtual void    Disconnect(MidiInputPort* pMidiPort) OVERRIDE;
73              virtual int     InstrumentIndex();              virtual void    DisconnectAllMidiInputPorts() OVERRIDE;
74              virtual int     InstrumentStatus();              virtual uint    GetMidiInputPortCount() OVERRIDE;
75              virtual LinuxSampler::Engine* GetEngine();              virtual MidiInputPort* GetMidiInputPort(uint index) OVERRIDE;
76              virtual String  EngineName();              virtual midi_chan_t MidiChannel() OVERRIDE;
77              virtual FxSend* AddFxSend(uint8_t MidiCtrl, String Name = "") throw (Exception);              virtual void    SetMidiChannel(midi_chan_t MidiChannel) OVERRIDE;
78              virtual FxSend* GetFxSend(uint FxSendIndex);              virtual void    Connect(MidiInputPort* pMidiPort, midi_chan_t MidiChannel) OVERRIDE; // deprecated, may be removed
79              virtual uint    GetFxSendCount();              virtual void    DisconnectMidiInputPort() OVERRIDE; // deprecated, may be removed
80              virtual void    RemoveFxSend(FxSend* pFxSend);              virtual MidiInputPort* GetMidiInputPort() OVERRIDE; // deprecated, may be removed
81              virtual void    Connect(VirtualMidiDevice* pDevice);              virtual String  InstrumentFileName() OVERRIDE;
82              virtual void    Disconnect(VirtualMidiDevice* pDevice);              virtual String  InstrumentName() OVERRIDE;
83                virtual int     InstrumentIndex() OVERRIDE;
84                virtual int     InstrumentStatus() OVERRIDE;
85                virtual Engine* GetEngine() OVERRIDE;
86                virtual String  EngineName() OVERRIDE;
87                virtual FxSend* AddFxSend(uint8_t MidiCtrl, String Name = "") throw (Exception) OVERRIDE;
88                virtual FxSend* GetFxSend(uint FxSendIndex) OVERRIDE;
89                virtual uint    GetFxSendCount() OVERRIDE;
90                virtual void    RemoveFxSend(FxSend* pFxSend) OVERRIDE;
91                virtual void    Connect(VirtualMidiDevice* pDevice) OVERRIDE;
92                virtual void    Disconnect(VirtualMidiDevice* pDevice) OVERRIDE;
93    
94                // implementation of abstract methods derived from AbstractEngine::ScriptConsumer
95                virtual void ResourceToBeUpdated(VMParserContext* pResource, void*& pUpdateArg) OVERRIDE {}
96                virtual void ResourceUpdated(VMParserContext* pOldResource, VMParserContext* pNewResource, void* pUpdateArg) OVERRIDE {}
97                virtual void OnResourceProgress(float fProgress) OVERRIDE {}
98    
99              virtual AbstractEngine::Format GetEngineFormat() = 0;              virtual AbstractEngine::Format GetEngineFormat() = 0;
100                virtual MidiKeyboardManagerBase* GetMidiKeyboardManager() = 0;
101    
102                AudioOutputDevice* GetAudioOutputDeviceSafe();
103    
104              friend class AbstractVoice;              friend class AbstractVoice;
105              friend class AbstractEngine;              friend class AbstractEngine;
106              template<class TV, class TRR, class TR, class TD, class TIM, class TI> friend class EngineBase;              template<class TV, class TRR, class TR, class TD, class TIM, class TI> friend class EngineBase;
107              template<class EC, class R, class S, class D> friend class VoiceBase;              template<class EC, class R, class S, class D> friend class VoiceBase;
108    
109          protected:          //protected:
110              AbstractEngineChannel();              AbstractEngineChannel();
111              virtual ~AbstractEngineChannel();              virtual ~AbstractEngineChannel();
112    
113              AbstractEngine*           pEngine;              AbstractEngine*           pEngine;
114          public: // TODO: should be protected              Mutex                     EngineMutex; ///< protects the Engine from access by the instrument loader thread when lscp is disconnecting
115                Mutex                     MidiInputMutex; ///< Introduced when support for multiple MIDI inputs per engine channel was added: protects the MIDI event input ringbuffer on this engine channel to be accessed concurrently by multiple midi input threads. As alternative one might also move the ringbuffer from this engine channel to the individual MIDI ports/devices and let the sampler engine read the events from there instead of receiving them here.
116    
117            //protected:
118              AudioChannel*             pChannelLeft;             ///< encapsulates the audio rendering buffer (left)              AudioChannel*             pChannelLeft;             ///< encapsulates the audio rendering buffer (left)
119              AudioChannel*             pChannelRight;            ///< encapsulates the audio rendering buffer (right)              AudioChannel*             pChannelRight;            ///< encapsulates the audio rendering buffer (right)
         protected:  
120              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
121              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
122              MidiInputPort*            pMidiInputPort;           ///< Points to the connected MIDI input port or NULL if none assigned.              DoubleBuffer< ArrayList<MidiInputPort*> > midiInputs; ///< MIDI input ports on which this sampler engine channel shall listen to.
123              midi_chan_t               midiChannel;              ///< MIDI channel(s) on which this engine channel listens to.              midi_chan_t               midiChannel;              ///< MIDI channel(s) on which this engine channel listens to (on all MIDI input ports).
124              RingBuffer<Event,false>*  pEventQueue;              ///< Input event queue.              RingBuffer<Event,false>*  pEventQueue;              ///< Input event queue.
125              RTList<Event>*            pEvents;                  ///< All engine channel specific events for the current audio fragment.              RTList<Event>*            pEvents;                  ///< All engine channel specific events for the current audio fragment.
126              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).              struct _DelayedEvents {
127                    RTList<Event>*            pList; ///< Unsorted list where all delayed events are moved to and remain here until they're finally processed.
128                    Pool<ScheduledEvent>      schedulerNodes; ///< Nodes used to sort the delayed events (stored on pList) with time sorted queue.
129                    RTAVLTree<ScheduledEvent> queue; ///< Used to access the delayed events (from pList) in time sorted manner.
130    
131                    _DelayedEvents() : pList(NULL), schedulerNodes(CONFIG_MAX_EVENTS_PER_FRAGMENT) {}
132    
133                    inline void clear() {
134                        if (pList) pList->clear();
135                        schedulerNodes.clear();
136                        queue.clear();
137                    }
138                } delayedEvents;
139                uint8_t                   ControllerTable[130];     ///< Reflects the current values (0-127) of all MIDI controllers for this engine / sampler channel. Number 128 is for channel pressure (mono aftertouch), 129 for pitch bend.
140              String                    InstrumentFile;              String                    InstrumentFile;
141              int                       InstrumentIdx;              int                       InstrumentIdx;
142              String                    InstrumentIdxName;              String                    InstrumentIdxName;
143              int                       InstrumentStat;              int                       InstrumentStat;
144              double                    GlobalVolume;             ///< Master volume factor set through the C++ API / LSCP (a value < 1.0 means attenuation, a value > 1.0 means amplification)              double                    GlobalVolume;             ///< Master volume factor set through the C++ API / LSCP (a value < 1.0 means attenuation, a value > 1.0 means amplification)
145              double                    MidiVolume;               ///< Volume factor altered by MIDI CC#7 (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;  
146              int                       Pitch;                    ///< Current (absolute) MIDI pitch value.              int                       Pitch;                    ///< Current (absolute) MIDI pitch value.
147              float                     CurrentKeyDimension;      ///< Current value (0-1.0) 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.
148              bool                      PortamentoMode;           ///< in Portamento Mode we slide the pitch from the last note to the current note.              bool                      PortamentoMode;           ///< in Portamento Mode we slide the pitch from the last note to the current note.
# Line 115  namespace LinuxSampler { Line 154  namespace LinuxSampler {
154              int                       iEngineIndexSelf;         ///< Reflects the index of this EngineChannel in the Engine's ArrayList.              int                       iEngineIndexSelf;         ///< Reflects the index of this EngineChannel in the Engine's ArrayList.
155              bool                      bStatusChanged;           ///< true in case an engine parameter has changed (e.g. new instrument, another volumet)              bool                      bStatusChanged;           ///< true in case an engine parameter has changed (e.g. new instrument, another volumet)
156              uint32_t                  RoundRobinIndex;          ///< counter for round robin sample selection, incremented for each note on              uint32_t                  RoundRobinIndex;          ///< counter for round robin sample selection, incremented for each note on
157                InstrumentScript*         pScript;                  ///< Points to the real-time instrument script(s) to be executed, NULL if current instrument does not have an instrument script. Even though the underlying VM representation of the script is shared among multiple sampler channels, the InstrumentScript object here is not shared though, it exists for each sampler channel separately.
158    
159              SynchronizedConfig< ArrayList<VirtualMidiDevice*> > virtualMidiDevices;              SynchronizedConfig< ArrayList<VirtualMidiDevice*> > virtualMidiDevices;
160              SynchronizedConfig< ArrayList<VirtualMidiDevice*> >::Reader virtualMidiDevicesReader_AudioThread;              SynchronizedConfig< ArrayList<VirtualMidiDevice*> >::Reader virtualMidiDevicesReader_AudioThread;
# Line 139  namespace LinuxSampler { Line 179  namespace LinuxSampler {
179              ActiveKeyGroupMap ActiveKeyGroups;      ///< Contains event queues for key groups, ordered by key group ID.              ActiveKeyGroupMap ActiveKeyGroups;      ///< Contains event queues for key groups, ordered by key group ID.
180    
181              virtual void ResetControllers();              virtual void ResetControllers();
182              virtual void ResetInternal();              virtual void ResetInternal(bool bResetEngine);
183              virtual void RemoveAllFxSends();              virtual void RemoveAllFxSends();
184    
185              void ImportEvents(uint Samples);              void ImportEvents(uint Samples);
186                int  ScheduleEventMicroSec(const Event* pEvent, int delay);
187                void IgnoreEvent(int id);
188    
189              void AddGroup(uint group);              void AddGroup(uint group);
190              void HandleKeyGroupConflicts(uint KeyGroup, Pool<Event>::Iterator& itNoteOnEvent);              void HandleKeyGroupConflicts(uint KeyGroup, Pool<Event>::Iterator& itNoteOnEvent);
191              void ClearGroupEventLists();              void ClearGroupEventLists();
192              void DeleteGroupEventLists();              void DeleteGroupEventLists();
193    
194            private:
195                /**
196                 * Returns @c true if there are 2 ore more MidiInputPorts connected
197                 * to this engine channel.
198                 *
199                 * This method is currently only used to prevent unnecessary
200                 * MidiInputMutex.Lock() if there is not more than 1 MIDI input on
201                 * this engine channel.
202                 */
203                inline bool hasMultipleMIDIInputs() const {
204                    //FIXME: leaves tiny time frames open (shortly after 1->2 devices connected or 2->1 disconnected) which could lead to concurrency issue for the purpose described above, however in practice it "should" be acceptable
205                    return midiInputs.unsafeBack().size() > 1;
206                }
207      };      };
208    
209  } // namespace LinuxSampler  } // namespace LinuxSampler
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