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

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

Parent Directory Parent Directory | Revision Log Revision Log


Revision 412 - (show annotations) (download) (as text)
Sat Feb 26 22:44:51 2005 UTC (13 years, 3 months ago) by schoenebeck
File MIME type: text/x-c++hdr
File size: 6559 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 /***************************************************************************
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 uint8_t ControllerTable[128]; ///< Reflects the current values (0-127) of all MIDI controllers for this engine / sampler channel.
81 midi_key_info_t* pMIDIKeyInfo; ///< Contains all active voices sorted by MIDI key number and other informations to the respective MIDI key
82 Pool<uint>* pActiveKeys; ///< Holds all keys in it's allocation list with active voices.
83 std::map<uint,uint*> ActiveKeyGroups; ///< Contains active keys (in case they belong to a key group) ordered by key group ID.
84 ::gig::Instrument* pInstrument;
85 bool SustainPedal; ///< true if sustain pedal is down
86 double GlobalVolume; ///< overall volume (a value < 1.0 means attenuation, a value > 1.0 means amplification)
87 int Pitch; ///< Current (absolute) MIDI pitch value.
88 int CurrentKeyDimension; ///< Current value (0-127) for the keyboard dimension, altered by pressing a keyswitching key.
89 String InstrumentFile;
90 int InstrumentIdx;
91 String InstrumentIdxName;
92 int InstrumentStat;
93 RTList<Voice>::Iterator itLastStolenVoice; ///< Only for voice stealing: points to the last voice which was theft in current audio fragment, NULL otherwise.
94 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.
95
96 friend class Engine;
97 friend class Voice;
98 friend class InstrumentResourceManager;
99
100 private:
101 void ResetInternal();
102 };
103
104 }} // namespace LinuxSampler::gig
105
106 #endif // __LS_GIG_ENGINECHANNEL_H__

  ViewVC Help
Powered by ViewVC