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

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Revision 473 - (show annotations) (download) (as text)
Thu Mar 17 20:13:08 2005 UTC (14 years, 11 months ago) by schoenebeck
File MIME type: text/x-c++hdr
File size: 6877 byte(s)
* fixed event leak (events sent to inactive keys were not freed)
* implemented MIDI channel mode messages "All Sound Off", "Reset All
  Controller", "All Notes Off" (fixes bug #5)

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_ENGINECHANNEL_H__
25 #define __LS_GIG_ENGINECHANNEL_H__
26
27 #if DEBUG_HEADERS
28 # warning EngineChannel.h included
29 #endif // DEBUG_HEADERS
30
31 #include "../common/Event.h"
32 #include "../common/EngineChannel.h"
33 #include "EngineGlobals.h"
34 #include "Engine.h"
35 #include "Voice.h"
36 #include "InstrumentResourceManager.h"
37
38 namespace LinuxSampler { namespace gig {
39
40 // just symbol prototyping
41 class midi_key_info_t;
42 class Voice;
43
44 class EngineChannel : public LinuxSampler::EngineChannel, public InstrumentConsumer {
45 public:
46 EngineChannel();
47 virtual ~EngineChannel();
48
49 // implementation of abstract methods derived from interface class 'LinuxSampler::EngineChannel'
50 virtual void PrepareLoadInstrument(const char* FileName, uint Instrument);
51 virtual void LoadInstrument();
52 virtual void SendNoteOn(uint8_t Key, uint8_t Velocity);
53 virtual void SendNoteOff(uint8_t Key, uint8_t Velocity);
54 virtual void SendPitchbend(int Pitch);
55 virtual void SendControlChange(uint8_t Controller, uint8_t Value);
56 virtual float Volume();
57 virtual void Volume(float f);
58 virtual uint Channels();
59 virtual void Connect(AudioOutputDevice* pAudioOut);
60 virtual void DisconnectAudioOutputDevice();
61 virtual void SetOutputChannel(uint EngineAudioChannel, uint AudioDeviceChannel);
62 virtual int OutputChannel(uint EngineAudioChannel);
63 virtual String InstrumentFileName();
64 virtual String InstrumentName();
65 virtual int InstrumentIndex();
66 virtual int InstrumentStatus();
67 virtual LinuxSampler::Engine* GetEngine();
68
69 // implementation of abstract methods derived from interface class 'InstrumentConsumer'
70 virtual void ResourceToBeUpdated(::gig::Instrument* pResource, void*& pUpdateArg);
71 virtual void ResourceUpdated(::gig::Instrument* pOldResource, ::gig::Instrument* pNewResource, void* pUpdateArg);
72
73 //protected:
74 Engine* pEngine;
75 float* pOutputLeft; ///< Audio output channel buffer (left)
76 float* pOutputRight; ///< Audio output channel buffer (right)
77 int AudioDeviceChannelLeft; ///< audio device channel number to which the left channel is connected to
78 int AudioDeviceChannelRight; ///< audio device channel number to which the right channel is connected to
79 RingBuffer<Event>* pEventQueue; ///< Input event queue.
80 RTList<Event>* pEvents; ///< All engine channel specific events for the current audio fragment.
81 RTList<Event>* pCCEvents; ///< All control change events for the current audio fragment on this engine channel.
82 RTList<Event>* pSynthesisEvents[Event::destination_count]; ///< Events directly affecting synthesis parameters (like pitch, volume and filter).
83 uint8_t ControllerTable[128]; ///< Reflects the current values (0-127) of all MIDI controllers for this engine / sampler channel.
84 midi_key_info_t* pMIDIKeyInfo; ///< Contains all active voices sorted by MIDI key number and other informations to the respective MIDI key
85 Pool<uint>* pActiveKeys; ///< Holds all keys in it's allocation list with active voices.
86 std::map<uint,uint*> ActiveKeyGroups; ///< Contains active keys (in case they belong to a key group) ordered by key group ID.
87 ::gig::Instrument* pInstrument;
88 bool SustainPedal; ///< true if sustain pedal is down
89 double GlobalVolume; ///< overall volume (a value < 1.0 means attenuation, a value > 1.0 means amplification)
90 float GlobalPanLeft;
91 float GlobalPanRight;
92 int Pitch; ///< Current (absolute) MIDI pitch value.
93 int CurrentKeyDimension; ///< Current value (0-127) for the keyboard dimension, altered by pressing a keyswitching key.
94 String InstrumentFile;
95 int InstrumentIdx;
96 String InstrumentIdxName;
97 int InstrumentStat;
98 int iEngineIndexSelf; ///< Reflects the index of this EngineChannel in the Engine's ArrayList.
99
100 void ResetControllers();
101 void ClearEventLists();
102 void ImportEvents(uint Samples);
103
104 friend class Engine;
105 friend class Voice;
106 friend class InstrumentResourceManager;
107
108 private:
109 void ResetInternal();
110 };
111
112 }} // namespace LinuxSampler::gig
113
114 #endif // __LS_GIG_ENGINECHANNEL_H__

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