/[svn]/linuxsampler/trunk/src/engines/gig/Engine.h
ViewVC logotype

Contents of /linuxsampler/trunk/src/engines/gig/Engine.h

Parent Directory Parent Directory | Revision Log Revision Log


Revision 242 - (show annotations) (download) (as text)
Wed Sep 15 13:59:08 2004 UTC (19 years, 6 months ago) by schoenebeck
File MIME type: text/x-c++hdr
File size: 9765 byte(s)
* added support for release trigger dimension (that is voices which are
  spawned when a key was released)
* libgig: bugfix in dimension region switching

1 /***************************************************************************
2 * *
3 * LinuxSampler - modular, streaming capable sampler *
4 * *
5 * Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck *
6 * *
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 <map>
33
34 #include "../../common/RingBuffer.h"
35 #include "../../common/RTELMemoryPool.h"
36 #include "../../common/ConditionServer.h"
37 #include "../common/Engine.h"
38 #include "../common/Event.h"
39 #include "../common/BiquadFilter.h"
40 #include "../../lib/fileloader/libgig/gig.h"
41 #include "InstrumentResourceManager.h"
42 #include "../../network/lscp.h"
43
44 #define PITCHBEND_SEMITONES 12
45 #define MAX_AUDIO_VOICES 128
46
47 namespace LinuxSampler { namespace gig {
48
49 using std::map;
50
51 // just symbol prototyping
52 class Voice;
53 class DiskThread;
54 class InstrumentResourceManager;
55
56 /**
57 * Sampler engine for the Gigasampler format.
58 */
59 class gig::Engine : public LinuxSampler::Engine, public InstrumentConsumer {
60 public:
61 // methods
62 Engine();
63 ~Engine();
64
65 // abstract methods derived from class 'LinuxSampler::Engine'
66 virtual void LoadInstrument(const char* FileName, uint Instrument);
67 virtual void Reset();
68 virtual void Enable();
69 virtual void Disable();
70 virtual void SendNoteOn(uint8_t Key, uint8_t Velocity);
71 virtual void SendNoteOff(uint8_t Key, uint8_t Velocity);
72 virtual void SendPitchbend(int Pitch);
73 virtual void SendControlChange(uint8_t Controller, uint8_t Value);
74 virtual float Volume();
75 virtual void Volume(float f);
76 virtual uint Channels();
77 virtual void Connect(AudioOutputDevice* pAudioOut);
78 virtual void DisconnectAudioOutputDevice();
79 virtual void SetOutputChannel(uint EngineAudioChannel, uint AudioDeviceChannel);
80 virtual int OutputChannel(uint EngineAudioChannel);
81 virtual int RenderAudio(uint Samples);
82 virtual uint VoiceCount();
83 virtual uint VoiceCountMax();
84 virtual bool DiskStreamSupported();
85 virtual uint DiskStreamCount();
86 virtual uint DiskStreamCountMax();
87 virtual String DiskStreamBufferFillBytes();
88 virtual String DiskStreamBufferFillPercentage();
89 virtual String Description();
90 virtual String Version();
91 virtual String EngineName();
92 virtual String InstrumentFileName();
93 virtual int InstrumentIndex();
94 virtual int InstrumentStatus();
95
96 // abstract methods derived from interface class 'InstrumentConsumer'
97 virtual void ResourceToBeUpdated(::gig::Instrument* pResource, void*& pUpdateArg);
98 virtual void ResourceUpdated(::gig::Instrument* pOldResource, ::gig::Instrument* pNewResource, void* pUpdateArg);
99 protected:
100 struct midi_key_info_t {
101 RTEList<Voice>* pActiveVoices; ///< Contains the active voices associated with the MIDI key.
102 bool KeyPressed; ///< Is true if the respective MIDI key is currently pressed.
103 bool Active; ///< If the key contains active voices.
104 bool ReleaseTrigger; ///< If we have to launch release triggered voice(s) when the key is released
105 uint* pSelf; ///< hack to allow fast deallocation of the key from the list of active keys
106 RTEList<Event>* pEvents; ///< Key specific events (only Note-on, Note-off and sustain pedal currently)
107 };
108
109 static InstrumentResourceManager Instruments;
110
111 AudioOutputDevice* pAudioOutputDevice;
112 float* pOutputLeft; ///< Audio output channel buffer (left)
113 float* pOutputRight; ///< Audio output channel buffer (right)
114 int AudioDeviceChannelLeft; ///< audio device channel number to which the left channel is connected to
115 int AudioDeviceChannelRight; ///< audio device channel number to which the right channel is connected to
116 uint SampleRate; ///< Sample rate of the engines output audio signal (in Hz)
117 uint MaxSamplesPerCycle; ///< Size of each audio output buffer
118 DiskThread* pDiskThread;
119 uint8_t ControllerTable[128]; ///< Reflects the current values (0-127) of all MIDI controllers for this engine / sampler channel.
120 RingBuffer<Event>* pEventQueue; ///< Input event queue.
121 midi_key_info_t pMIDIKeyInfo[128]; ///< Contains all active voices sorted by MIDI key number and other informations to the respective MIDI key
122 RTELMemoryPool<Voice>* pVoicePool; ///< Contains all voices that can be activated.
123 RTELMemoryPool<uint>* pActiveKeys; ///< Holds all keys in it's allocation list with active voices.
124 RTELMemoryPool<Event>* pEventPool; ///< Contains all Event objects that can be used.
125 EventGenerator* pEventGenerator;
126 RTEList<Event>* pEvents; ///< All events for the current audio fragment.
127 RTEList<Event>* pCCEvents; ///< All control change events for the current audio fragment.
128 RTEList<Event>* pSynthesisEvents[Event::destination_count]; ///< Events directly affecting synthesis parameter (like pitch, volume and filter).
129 float* pSynthesisParameters[Event::destination_count]; ///< Matrix with final synthesis parameters for the current audio fragment which will be used in the main synthesis loop.
130 biquad_param_t* pBasicFilterParameters; ///< Biquad parameters of the basic bandpass filter.
131 biquad_param_t* pMainFilterParameters; ///< Main biquad parameters of the individual filter (lowpass / bandpass / highpass).
132 map<uint,uint*> ActiveKeyGroups; ///< Contains active keys (in case they belong to a key group) ordered by key group ID.
133 RIFF::File* pRIFF;
134 ::gig::File* pGig;
135 ::gig::Instrument* pInstrument;
136 bool SustainPedal; ///< true if sustain pedal is down
137 double GlobalVolume; ///< overall volume (a value < 1.0 means attenuation, a value > 1.0 means amplification)
138 int Pitch; ///< Current (absolute) MIDI pitch value.
139 int ActiveVoiceCount; ///< number of currently active voices
140 int ActiveVoiceCountMax; ///< the maximum voice usage since application start
141 bool SuspensionRequested;
142 ConditionServer EngineDisabled;
143 String InstrumentFile;
144 int InstrumentIdx;
145 int InstrumentStat;
146
147 void ProcessNoteOn(Event* pNoteOnEvent);
148 void ProcessNoteOff(Event* pNoteOffEvent);
149 void ProcessPitchbend(Event* pPitchbendEvent);
150 void ProcessControlChange(Event* pControlChangeEvent);
151 void LaunchVoice(Event* pNoteOnEvent, int iLayer = 0, bool ReleaseTriggerVoice = false);
152 void KillVoiceImmediately(Voice* pVoice);
153 void ResetSynthesisParameters(Event::destination_t dst, float val);
154 void ResetInternal();
155
156 friend class Voice;
157 friend class EGADSR;
158 friend class EGDecay;
159 friend class VCAManipulator;
160 friend class VCFCManipulator;
161 friend class VCOManipulator;
162 friend class InstrumentResourceManager;
163 private:
164 void DisableAndLock();
165 };
166
167 }} // namespace LinuxSampler::gig
168
169 #endif // __LS_GIG_ENGINE_H__

  ViewVC Help
Powered by ViewVC