engines/gig/Engine.h

/***************************************************************************
 *                                                                         *
 *   LinuxSampler - modular, streaming capable sampler                     *
 *                                                                         *
 *   Copyright (C) 2003, 2004 by Benno Senoner and 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_ENGINE_H__
#define __LS_GIG_ENGINE_H__

#include "../../common/global.h"

#if DEBUG_HEADERS
# warning Engine.h included
#endif // DEBUG_HEADERS

#include "../../common/RingBuffer.h"
#include "../../common/RTELMemoryPool.h"
#include "../../common/ConditionServer.h"
#include "../common/Engine.h"
#include "../common/Event.h"
#include "../common/BiquadFilter.h"
#include "../../lib/fileloader/libgig/gig.h"
#include "InstrumentResourceManager.h"
#include "../../network/lscp.h"

#define PITCHBEND_SEMITONES             12
#define MAX_AUDIO_VOICES                128

namespace LinuxSampler { namespace gig {

    // just symbol prototyping
    class Voice;
    class DiskThread;
    class InstrumentResourceManager;

    /**
     * Sampler engine for the Gigasampler format.
     */
    class gig::Engine : public LinuxSampler::Engine, public InstrumentConsumer {
        public:
            // methods
            Engine();
           ~Engine();

            // abstract methods derived from class 'LinuxSampler::Engine'
            virtual void   LoadInstrument(const char* FileName, uint Instrument);
            virtual void   Reset();
            virtual void   Enable();
            virtual void   Disable();
            virtual void   SendNoteOn(uint8_t Key, uint8_t Velocity);
            virtual void   SendNoteOff(uint8_t Key, uint8_t Velocity);
            virtual void   SendPitchbend(int Pitch);
            virtual void   SendControlChange(uint8_t Controller, uint8_t Value);
            virtual float  Volume();
            virtual void   Volume(float f);
            virtual void   Connect(AudioOutputDevice* pAudioOut);
            virtual void   DisconnectAudioOutputDevice();
            virtual int    RenderAudio(uint Samples);
            virtual uint   VoiceCount();
            virtual uint   VoiceCountMax();
            virtual bool   DiskStreamSupported();
            virtual uint   DiskStreamCount();
            virtual uint   DiskStreamCountMax();
            virtual String DiskStreamBufferFillBytes();
            virtual String DiskStreamBufferFillPercentage();
            virtual String Description();
            virtual String Version();

            // 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);
        protected:
            struct midi_key_info_t {
                RTEList<Voice>* pActiveVoices; ///< Contains the active voices associated with the MIDI key.
                bool            KeyPressed;    ///< Is true if the respective MIDI key is currently pressed.
                bool            Active;        ///< If the key contains active voices.
                uint*           pSelf;         ///< hack to allow fast deallocation of the key from the list of active keys
                RTEList<Event>* pEvents;       ///< Key specific events (only Note-on, Note-off and sustain pedal currently)
            };

            static InstrumentResourceManager Instruments;

            AudioOutputDevice*      pAudioOutputDevice;
            DiskThread*             pDiskThread;
            uint8_t                 ControllerTable[128];  ///< Reflects the current values (0-127) of all MIDI controllers for this engine / sampler channel.
            RingBuffer<Event>*      pEventQueue;           ///< Input event queue.
            midi_key_info_t         pMIDIKeyInfo[128];     ///< Contains all active voices sorted by MIDI key number and other informations to the respective MIDI key
            RTELMemoryPool<Voice>*  pVoicePool;            ///< Contains all voices that can be activated.
            RTELMemoryPool<uint>*   pActiveKeys;           ///< Holds all keys in it's allocation list with active voices.
            RTELMemoryPool<Event>*  pEventPool;            ///< Contains all Event objects that can be used.
            EventGenerator*         pEventGenerator;
            RTEList<Event>*         pEvents;               ///< All events for the current audio fragment.
            RTEList<Event>*         pCCEvents;             ///< All control change events for the current audio fragment.
            RTEList<Event>*         pSynthesisEvents[Event::destination_count];     ///< Events directly affecting synthesis parameter (like pitch, volume and filter).
            float*                  pSynthesisParameters[Event::destination_count]; ///< Matrix with final synthesis parameters for the current audio fragment which will be used in the main synthesis loop.
            biquad_param_t*         pBasicFilterParameters; ///< Biquad parameters of the basic bandpass filter.
            biquad_param_t*         pMainFilterParameters;  ///< Main biquad parameters of the individual filter (lowpass / bandpass / highpass).
            RIFF::File*             pRIFF;
            ::gig::File*            pGig;
            ::gig::Instrument*      pInstrument;
            bool                    SustainPedal;          ///< true if sustain pedal is down
            double                  GlobalVolume;          ///< overall volume (a value < 1.0 means attenuation, a value > 1.0 means amplification)
            int                     Pitch;                 ///< Current (absolute) MIDI pitch value.
            int                     ActiveVoiceCount;      ///< number of currently active voices
            int                     ActiveVoiceCountMax;   ///< the maximum voice usage since application start
            bool                    SuspensionRequested;
            ConditionServer         EngineDisabled;

            void ProcessNoteOn(Event* pNoteOnEvent);
            void ProcessNoteOff(Event* pNoteOffEvent);
            void ProcessPitchbend(Event* pPitchbendEvent);
            void ProcessControlChange(Event* pControlChangeEvent);
            void KillVoice(Voice* pVoice);
            void ResetSynthesisParameters(Event::destination_t dst, float val);
            void ResetInternal();

            friend class Voice;
            friend class EGADSR;
            friend class EGDecay;
            friend class VCAManipulator;
            friend class VCFCManipulator;
            friend class VCOManipulator;
            friend class InstrumentResourceManager;
        private:
            void DisableAndLock();
    };

}} // namespace LinuxSampler::gig

#endif // __LS_GIG_ENGINE_H__
1	schoenebeck	53	/***************************************************************************
2			* *
3			* LinuxSampler - modular, streaming capable sampler *
4			* *
5	schoenebeck	56	* Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck *
6	schoenebeck	53	* *
7			* This program is free software; you can redistribute it and/or modify *
8			* it under the terms of the GNU General Public License as published by *
9			* the Free Software Foundation; either version 2 of the License, or *
10			* (at your option) any later version. *
11			* *
12			* This program is distributed in the hope that it will be useful, *
13			* but WITHOUT ANY WARRANTY; without even the implied warranty of *
14			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
15			* GNU General Public License for more details. *
16			* *
17			* You should have received a copy of the GNU General Public License *
18			* along with this program; if not, write to the Free Software *
19			* Foundation, Inc., 59 Temple Place, Suite 330, Boston, *
20			* MA 02111-1307 USA *
21			***************************************************************************/
22
23			#ifndef __LS_GIG_ENGINE_H__
24			#define __LS_GIG_ENGINE_H__
25
26			#include "../../common/global.h"
27
28			#if DEBUG_HEADERS
29			# warning Engine.h included
30			#endif // DEBUG_HEADERS
31
32			#include "../../common/RingBuffer.h"
33			#include "../../common/RTELMemoryPool.h"
34			#include "../../common/ConditionServer.h"
35			#include "../common/Engine.h"
36			#include "../common/Event.h"
37	schoenebeck	80	#include "../common/BiquadFilter.h"
38	schoenebeck	53	#include "../../lib/fileloader/libgig/gig.h"
39			#include "InstrumentResourceManager.h"
40			#include "../../network/lscp.h"
41
42			#define PITCHBEND_SEMITONES 12
43	schoenebeck	80	#define MAX_AUDIO_VOICES 128
44	schoenebeck	53
45			namespace LinuxSampler { namespace gig {
46
47			// just symbol prototyping
48			class Voice;
49			class DiskThread;
50			class InstrumentResourceManager;
51
52			/**
53			* Sampler engine for the Gigasampler format.
54			*/
55			class gig::Engine : public LinuxSampler::Engine, public InstrumentConsumer {
56			public:
57			// methods
58			Engine();
59			~Engine();
60
61			// abstract methods derived from class 'LinuxSampler::Engine'
62			virtual void LoadInstrument(const char* FileName, uint Instrument);
63			virtual void Reset();
64			virtual void Enable();
65			virtual void Disable();
66			virtual void SendNoteOn(uint8_t Key, uint8_t Velocity);
67			virtual void SendNoteOff(uint8_t Key, uint8_t Velocity);
68			virtual void SendPitchbend(int Pitch);
69			virtual void SendControlChange(uint8_t Controller, uint8_t Value);
70			virtual float Volume();
71			virtual void Volume(float f);
72			virtual void Connect(AudioOutputDevice* pAudioOut);
73			virtual void DisconnectAudioOutputDevice();
74			virtual int RenderAudio(uint Samples);
75			virtual uint VoiceCount();
76			virtual uint VoiceCountMax();
77			virtual bool DiskStreamSupported();
78			virtual uint DiskStreamCount();
79			virtual uint DiskStreamCountMax();
80			virtual String DiskStreamBufferFillBytes();
81			virtual String DiskStreamBufferFillPercentage();
82			virtual String Description();
83			virtual String Version();
84
85			// abstract methods derived from interface class 'InstrumentConsumer'
86			virtual void ResourceToBeUpdated(::gig::Instrument* pResource, void*& pUpdateArg);
87			virtual void ResourceUpdated(::gig::Instrument* pOldResource, ::gig::Instrument* pNewResource, void* pUpdateArg);
88			protected:
89			struct midi_key_info_t {
90			RTEList<Voice>* pActiveVoices; ///< Contains the active voices associated with the MIDI key.
91			bool KeyPressed; ///< Is true if the respective MIDI key is currently pressed.
92			bool Active; ///< If the key contains active voices.
93			uint* pSelf; ///< hack to allow fast deallocation of the key from the list of active keys
94			RTEList<Event>* pEvents; ///< Key specific events (only Note-on, Note-off and sustain pedal currently)
95			};
96
97			static InstrumentResourceManager Instruments;
98
99			AudioOutputDevice* pAudioOutputDevice;
100			DiskThread* pDiskThread;
101			uint8_t ControllerTable[128]; ///< Reflects the current values (0-127) of all MIDI controllers for this engine / sampler channel.
102			RingBuffer<Event>* pEventQueue; ///< Input event queue.
103			midi_key_info_t pMIDIKeyInfo[128]; ///< Contains all active voices sorted by MIDI key number and other informations to the respective MIDI key
104			RTELMemoryPool<Voice>* pVoicePool; ///< Contains all voices that can be activated.
105			RTELMemoryPool<uint>* pActiveKeys; ///< Holds all keys in it's allocation list with active voices.
106			RTELMemoryPool<Event>* pEventPool; ///< Contains all Event objects that can be used.
107			EventGenerator* pEventGenerator;
108			RTEList<Event>* pEvents; ///< All events for the current audio fragment.
109			RTEList<Event>* pCCEvents; ///< All control change events for the current audio fragment.
110			RTEList<Event>* pSynthesisEvents[Event::destination_count]; ///< Events directly affecting synthesis parameter (like pitch, volume and filter).
111			float* pSynthesisParameters[Event::destination_count]; ///< Matrix with final synthesis parameters for the current audio fragment which will be used in the main synthesis loop.
112	schoenebeck	80	biquad_param_t* pBasicFilterParameters; ///< Biquad parameters of the basic bandpass filter.
113			biquad_param_t* pMainFilterParameters; ///< Main biquad parameters of the individual filter (lowpass / bandpass / highpass).
114	schoenebeck	53	RIFF::File* pRIFF;
115			::gig::File* pGig;
116			::gig::Instrument* pInstrument;
117			bool SustainPedal; ///< true if sustain pedal is down
118			double GlobalVolume; ///< overall volume (a value < 1.0 means attenuation, a value > 1.0 means amplification)
119			int Pitch; ///< Current (absolute) MIDI pitch value.
120			int ActiveVoiceCount; ///< number of currently active voices
121			int ActiveVoiceCountMax; ///< the maximum voice usage since application start
122			bool SuspensionRequested;
123			ConditionServer EngineDisabled;
124
125			void ProcessNoteOn(Event* pNoteOnEvent);
126			void ProcessNoteOff(Event* pNoteOffEvent);
127			void ProcessPitchbend(Event* pPitchbendEvent);
128			void ProcessControlChange(Event* pControlChangeEvent);
129			void KillVoice(Voice* pVoice);
130			void ResetSynthesisParameters(Event::destination_t dst, float val);
131			void ResetInternal();
132
133			friend class Voice;
134			friend class EGADSR;
135			friend class EGDecay;
136			friend class VCAManipulator;
137			friend class VCFCManipulator;
138			friend class VCOManipulator;
139			friend class InstrumentResourceManager;
140			private:
141			void DisableAndLock();
142			};
143
144			}} // namespace LinuxSampler::gig
145
146			#endif // __LS_GIG_ENGINE_H__