/[svn]/linuxsampler/trunk/src/engines/gig/Engine.h
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Annotation of /linuxsampler/trunk/src/engines/gig/Engine.h

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Revision 412 - (hide annotations) (download) (as text)
Sat Feb 26 22:44:51 2005 UTC (19 years, 1 month ago) by schoenebeck
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File size: 8639 byte(s)
* gig::Engine: fixed silence (engine channels' events were not imported
  into the engine, fixed undesired creation of new gig::Engine instances
  (and disk threads)
* AudioOutputDevice: reverted behavior to render per Engine instance (and
  not per EngineChannel instance)

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 411 * Copyright (C) 2005 Christian Schoenebeck *
7 schoenebeck 53 * *
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_ENGINE_H__
25     #define __LS_GIG_ENGINE_H__
26    
27     #include "../../common/global.h"
28    
29     #if DEBUG_HEADERS
30     # warning Engine.h included
31     #endif // DEBUG_HEADERS
32    
33 schoenebeck 239 #include <map>
34    
35 schoenebeck 411 #include "EngineGlobals.h"
36 schoenebeck 53 #include "../../common/RingBuffer.h"
37 schoenebeck 271 #include "../../common/Pool.h"
38 schoenebeck 53 #include "../../common/ConditionServer.h"
39     #include "../common/Engine.h"
40     #include "../common/Event.h"
41 schoenebeck 80 #include "../common/BiquadFilter.h"
42 schoenebeck 53 #include "../../lib/fileloader/libgig/gig.h"
43     #include "../../network/lscp.h"
44 schoenebeck 411 #include "EngineChannel.h"
45 schoenebeck 53
46     namespace LinuxSampler { namespace gig {
47    
48     // just symbol prototyping
49     class Voice;
50     class DiskThread;
51     class InstrumentResourceManager;
52 schoenebeck 411 class midi_key_info_t;
53     class EngineChannel;
54 schoenebeck 53
55     /**
56     * Sampler engine for the Gigasampler format.
57     */
58 schoenebeck 411 class Engine : public LinuxSampler::Engine {
59     public:
60 schoenebeck 53 // methods
61     Engine();
62     ~Engine();
63 schoenebeck 411 void Connect(AudioOutputDevice* pAudioOut);
64 schoenebeck 53
65 schoenebeck 411 // implementation of abstract methods derived from class 'LinuxSampler::Engine'
66 schoenebeck 412 virtual int RenderAudio(uint Samples);
67 schoenebeck 411 virtual void SendSysex(void* pData, uint Size);
68 schoenebeck 53 virtual void Reset();
69     virtual void Enable();
70     virtual void Disable();
71     virtual uint VoiceCount();
72     virtual uint VoiceCountMax();
73     virtual bool DiskStreamSupported();
74     virtual uint DiskStreamCount();
75     virtual uint DiskStreamCountMax();
76     virtual String DiskStreamBufferFillBytes();
77     virtual String DiskStreamBufferFillPercentage();
78     virtual String Description();
79     virtual String Version();
80 senkov 112 virtual String EngineName();
81 schoenebeck 411
82     //protected:
83     static InstrumentResourceManager instruments;
84 schoenebeck 53
85     AudioOutputDevice* pAudioOutputDevice;
86 schoenebeck 225 uint SampleRate; ///< Sample rate of the engines output audio signal (in Hz)
87     uint MaxSamplesPerCycle; ///< Size of each audio output buffer
88 schoenebeck 411 DiskThread* pDiskThread;
89     RingBuffer<Event>* pEventQueue; ///< Input event queue for engine global events (e.g. SysEx messages).
90     Pool<Voice>* pVoicePool; ///< Contains all voices that can be activated.
91     EventGenerator* pEventGenerator;
92 schoenebeck 271 RTList<Event>* pVoiceStealingQueue; ///< All voice-launching events which had to be postponed due to free voice shortage.
93     RTList<Event>* pEvents; ///< All events for the current audio fragment.
94 schoenebeck 411 Pool<Event>* pEventPool; ///< Contains all Event objects that can be used.
95 schoenebeck 271 RTList<Event>* pCCEvents; ///< All control change events for the current audio fragment.
96 schoenebeck 411 RingBuffer<uint8_t>* pSysexBuffer; ///< Input buffer for MIDI system exclusive messages.
97 schoenebeck 271 RTList<Event>* pSynthesisEvents[Event::destination_count]; ///< Events directly affecting synthesis parameter (like pitch, volume and filter).
98 schoenebeck 53 float* pSynthesisParameters[Event::destination_count]; ///< Matrix with final synthesis parameters for the current audio fragment which will be used in the main synthesis loop.
99 schoenebeck 80 biquad_param_t* pBasicFilterParameters; ///< Biquad parameters of the basic bandpass filter.
100     biquad_param_t* pMainFilterParameters; ///< Main biquad parameters of the individual filter (lowpass / bandpass / highpass).
101 schoenebeck 412 int ActiveVoiceCount; ///< number of currently active voices (this value will be returned for public calls)
102     int ActiveVoiceCountTemp; ///< number of currently active voices (for internal usage, will be used for incrementation)
103 schoenebeck 53 int ActiveVoiceCountMax; ///< the maximum voice usage since application start
104     bool SuspensionRequested;
105     ConditionServer EngineDisabled;
106 schoenebeck 412 int8_t ScaleTuning[12]; ///< contains optional detune factors (-64..+63 cents) for all 12 semitones of an octave
107 schoenebeck 411 int MaxFadeOutPos; ///< The last position in an audio fragment to allow an instant fade out (e.g. for voice stealing) without leading to clicks.
108 schoenebeck 53
109 schoenebeck 412 void RenderAudio(EngineChannel* pEngineChannel, uint Samples);
110     void ClearEventLists();
111     void ImportEvents(RingBuffer<Event>* pEventQueue, uint Samples);
112 schoenebeck 411 void ProcessNoteOn(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent);
113     void ProcessNoteOff(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOffEvent);
114     void ProcessPitchbend(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itPitchbendEvent);
115     void ProcessControlChange(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itControlChangeEvent);
116 schoenebeck 271 void ProcessSysex(Pool<Event>::Iterator& itSysexEvent);
117 schoenebeck 411 Pool<Voice>::Iterator LaunchVoice(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent, int iLayer, bool ReleaseTriggerVoice, bool VoiceStealing);
118     void StealVoice(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent);
119     void FreeVoice(EngineChannel* pEngineChannel, Pool<Voice>::Iterator& itVoice);
120     void FreeKey(EngineChannel* pEngineChannel, midi_key_info_t* pKey);
121 schoenebeck 53 void ResetSynthesisParameters(Event::destination_t dst, float val);
122     void ResetInternal();
123    
124 schoenebeck 411 static Engine* AcquireEngine(LinuxSampler::gig::EngineChannel* pChannel, AudioOutputDevice* pDevice);
125     static void FreeEngine(LinuxSampler::gig::EngineChannel* pChannel, AudioOutputDevice* pDevice);
126    
127     void DisableAndLock(); // FIXME: should at least be protected
128    
129 schoenebeck 53 friend class Voice;
130     friend class EGADSR;
131     friend class EGDecay;
132     friend class VCAManipulator;
133     friend class VCFCManipulator;
134 schoenebeck 411 friend class VCOManipulator;
135 schoenebeck 53 private:
136 schoenebeck 412 std::list<EngineChannel*> engineChannels; ///< All engine channels of a gig::Engine instance.
137 schoenebeck 411
138     static std::map<AudioOutputDevice*,Engine*> engines; ///< All instances of gig::Engine.
139    
140 schoenebeck 244 uint8_t GSCheckSum(const RingBuffer<uint8_t>::NonVolatileReader AddrReader, uint DataSize);
141     void AdjustScale(int8_t ScaleTunes[12]);
142 schoenebeck 53 };
143    
144     }} // namespace LinuxSampler::gig
145    
146     #endif // __LS_GIG_ENGINE_H__

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