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

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Revision 502 - (show annotations) (download) (as text)
Fri Apr 29 14:20:22 2005 UTC (17 years, 9 months ago) by letz
File MIME type: text/x-c++hdr
File size: 9552 byte(s)
Fix destructor

1 /***************************************************************************
2 * *
3 * LinuxSampler - modular, streaming capable sampler *
4 * *
5 * Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck *
6 * Copyright (C) 2005 Christian Schoenebeck *
7 * *
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 #include <map>
34
35 #include "EngineGlobals.h"
36 #include "../../common/RingBuffer.h"
37 #include "../../common/Pool.h"
38 #include "../../common/ArrayList.h"
39 #include "../../common/ConditionServer.h"
40 #include "../common/Engine.h"
41 #include "../common/Event.h"
42 #include "../common/BiquadFilter.h"
43 #include "../../lib/fileloader/libgig/gig.h"
44 #include "../../network/lscp.h"
45 #include "EngineChannel.h"
46
47 // identifier of this sampler engine
48 #define LS_GIG_ENGINE_NAME "GigEngine"
49
50 namespace LinuxSampler { namespace gig {
51
52 // just symbol prototyping
53 class Voice;
54 class DiskThread;
55 class InstrumentResourceManager;
56 class midi_key_info_t;
57 class EngineChannel;
58
59 /**
60 * Sampler engine for the Gigasampler format.
61 */
62 class Engine : public LinuxSampler::Engine {
63 public:
64 // methods
65 Engine();
66 virtual ~Engine();
67 void Connect(AudioOutputDevice* pAudioOut);
68
69 // implementation of abstract methods derived from class 'LinuxSampler::Engine'
70 virtual int RenderAudio(uint Samples);
71 virtual void SendSysex(void* pData, uint Size);
72 virtual void Reset();
73 virtual void Enable();
74 virtual void Disable();
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 virtual String EngineName();
85
86 //protected:
87 static InstrumentResourceManager instruments;
88
89 AudioOutputDevice* pAudioOutputDevice;
90 uint SampleRate; ///< Sample rate of the engines output audio signal (in Hz)
91 uint MaxSamplesPerCycle; ///< Size of each audio output buffer
92 DiskThread* pDiskThread;
93 RingBuffer<Event>* pEventQueue; ///< Input event queue for engine global events (e.g. SysEx messages).
94 Pool<Voice>* pVoicePool; ///< Contains all voices that can be activated.
95 EventGenerator* pEventGenerator;
96 RTList<Event>* pVoiceStealingQueue; ///< All voice-launching events which had to be postponed due to free voice shortage.
97 RTList<Event>* pGlobalEvents; ///< All engine global events for the current audio fragment (usually only SysEx messages).
98 Pool<Event>* pEventPool; ///< Contains all Event objects that can be used.
99 RingBuffer<uint8_t>* pSysexBuffer; ///< Input buffer for MIDI system exclusive messages.
100 float* pSynthesisParameters[Event::destination_count]; ///< Matrix with final synthesis parameters for the current audio fragment which will be used in the main synthesis loop.
101 biquad_param_t* pBasicFilterParameters; ///< Biquad parameters of the basic bandpass filter.
102 biquad_param_t* pMainFilterParameters; ///< Main biquad parameters of the individual filter (lowpass / bandpass / highpass).
103 int ActiveVoiceCount; ///< number of currently active voices (this value will be returned for public calls)
104 int ActiveVoiceCountTemp; ///< number of currently active voices (for internal usage, will be used for incrementation)
105 int ActiveVoiceCountMax; ///< the maximum voice usage since application start
106 int VoiceTheftsLeft; ///< We only allow MAX_AUDIO_VOICES voices to be stolen per audio fragment, we use this variable to ensure this limit.
107 RTList<Voice>::Iterator itLastStolenVoice; ///< Only for voice stealing: points to the last voice which was theft in current audio fragment, NULL otherwise.
108 RTList<uint>::Iterator iuiLastStolenKey; ///< Only for voice stealing: key number of last key on which the last voice was theft in current audio fragment, NULL otherwise.
109 EngineChannel* pLastStolenChannel; ///< Only for voice stealing: points to the engine channel on which the previous voice was stolen in this audio fragment.
110 bool SuspensionRequested;
111 ConditionServer EngineDisabled;
112 int8_t ScaleTuning[12]; ///< contains optional detune factors (-64..+63 cents) for all 12 semitones of an octave
113 int MaxFadeOutPos; ///< The last position in an audio fragment to allow an instant fade out (e.g. for voice stealing) without leading to clicks.
114 uint32_t RandomSeed; ///< State of the random number generator used by the random dimension.
115
116 void ProcessEvents(EngineChannel* pEngineChannel, uint Samples);
117 void RenderActiveVoices(EngineChannel* pEngineChannel, uint Samples);
118 void RenderStolenVoices(uint Samples);
119 void PostProcess(EngineChannel* pEngineChannel);
120 void ClearEventLists();
121 void ImportEvents(uint Samples);
122 void ProcessNoteOn(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent);
123 void ProcessNoteOff(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOffEvent);
124 void ProcessPitchbend(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itPitchbendEvent);
125 void ProcessControlChange(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itControlChangeEvent);
126 void ProcessSysex(Pool<Event>::Iterator& itSysexEvent);
127 Pool<Voice>::Iterator LaunchVoice(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent, int iLayer, bool ReleaseTriggerVoice, bool VoiceStealing);
128 int StealVoice(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent);
129 void FreeVoice(EngineChannel* pEngineChannel, Pool<Voice>::Iterator& itVoice);
130 void FreeKey(EngineChannel* pEngineChannel, midi_key_info_t* pKey);
131 void ResetSynthesisParameters(Event::destination_t dst, float val);
132 void ResetInternal();
133
134 static Engine* AcquireEngine(LinuxSampler::gig::EngineChannel* pChannel, AudioOutputDevice* pDevice);
135 static void FreeEngine(LinuxSampler::gig::EngineChannel* pChannel, AudioOutputDevice* pDevice);
136
137 void DisableAndLock(); // FIXME: should at least be protected
138
139 friend class Voice;
140 friend class EGADSR;
141 friend class EGDecay;
142 friend class VCAManipulator;
143 friend class VCFCManipulator;
144 friend class VCOManipulator;
145 private:
146 ArrayList<EngineChannel*> engineChannels; ///< All engine channels of a gig::Engine instance.
147
148 static std::map<AudioOutputDevice*,Engine*> engines; ///< All instances of gig::Engine.
149
150 uint8_t GSCheckSum(const RingBuffer<uint8_t>::NonVolatileReader AddrReader, uint DataSize);
151 void AdjustScale(int8_t ScaleTunes[12]);
152 void ReleaseAllVoices(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itReleaseEvent);
153 void KillAllVoices(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itKillEvent);
154 };
155
156 }} // namespace LinuxSampler::gig
157
158 #endif // __LS_GIG_ENGINE_H__

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