/[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 517 - (show annotations) (download) (as text)
Sun May 8 00:26:21 2005 UTC (14 years, 10 months ago) by schoenebeck
File MIME type: text/x-c++hdr
File size: 6981 byte(s)
* implemented progress indicator for loading instruments
  (can be polled with "GET CHANNEL INFO", field "INSTRUMENT_STATUS")

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 virtual String EngineName();
69
70 // implementation of abstract methods derived from interface class 'InstrumentConsumer'
71 virtual void ResourceToBeUpdated(::gig::Instrument* pResource, void*& pUpdateArg);
72 virtual void ResourceUpdated(::gig::Instrument* pOldResource, ::gig::Instrument* pNewResource, void* pUpdateArg);
73 virtual void OnResourceProgress(float fProgress);
74
75 //protected:
76 Engine* pEngine;
77 float* pOutputLeft; ///< Audio output channel buffer (left)
78 float* pOutputRight; ///< Audio output channel buffer (right)
79 int AudioDeviceChannelLeft; ///< audio device channel number to which the left channel is connected to
80 int AudioDeviceChannelRight; ///< audio device channel number to which the right channel is connected to
81 RingBuffer<Event>* pEventQueue; ///< Input event queue.
82 RTList<Event>* pEvents; ///< All engine channel specific events for the current audio fragment.
83 RTList<Event>* pCCEvents; ///< All control change events for the current audio fragment on this engine channel.
84 RTList<Event>* pSynthesisEvents[Event::destination_count]; ///< Events directly affecting synthesis parameters (like pitch, volume and filter).
85 uint8_t ControllerTable[128]; ///< Reflects the current values (0-127) of all MIDI controllers for this engine / sampler channel.
86 midi_key_info_t* pMIDIKeyInfo; ///< Contains all active voices sorted by MIDI key number and other informations to the respective MIDI key
87 Pool<uint>* pActiveKeys; ///< Holds all keys in it's allocation list with active voices.
88 std::map<uint,uint*> ActiveKeyGroups; ///< Contains active keys (in case they belong to a key group) ordered by key group ID.
89 ::gig::Instrument* pInstrument;
90 bool SustainPedal; ///< true if sustain pedal is down
91 double GlobalVolume; ///< overall volume (a value < 1.0 means attenuation, a value > 1.0 means amplification)
92 float GlobalPanLeft;
93 float GlobalPanRight;
94 int Pitch; ///< Current (absolute) MIDI pitch value.
95 int CurrentKeyDimension; ///< Current value (0-127) for the keyboard dimension, altered by pressing a keyswitching key.
96 String InstrumentFile;
97 int InstrumentIdx;
98 String InstrumentIdxName;
99 int InstrumentStat;
100 int iEngineIndexSelf; ///< Reflects the index of this EngineChannel in the Engine's ArrayList.
101
102 void ResetControllers();
103 void ClearEventLists();
104 void ImportEvents(uint Samples);
105
106 friend class Engine;
107 friend class Voice;
108 friend class InstrumentResourceManager;
109
110 private:
111 void ResetInternal();
112 };
113
114 }} // namespace LinuxSampler::gig
115
116 #endif // __LS_GIG_ENGINECHANNEL_H__

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