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

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

Parent Directory Parent Directory | Revision Log Revision Log


Revision 475 - (show annotations) (download) (as text)
Thu Mar 17 23:56:56 2005 UTC (19 years ago) by schoenebeck
File MIME type: text/x-c++hdr
File size: 3805 byte(s)
* fixed segmentation fault on "GET CHANNEL INFO" commands which occured
  when an engine type was selected but no audio device connected yet to
  the sampler channel (fixes bug #4)

1 /***************************************************************************
2 * *
3 * Copyright (C) 2005 Christian Schoenebeck *
4 * *
5 * This program is free software; you can redistribute it and/or modify *
6 * it under the terms of the GNU General Public License as published by *
7 * the Free Software Foundation; either version 2 of the License, or *
8 * (at your option) any later version. *
9 * *
10 * This program is distributed in the hope that it will be useful, *
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
13 * GNU General Public License for more details. *
14 * *
15 * You should have received a copy of the GNU General Public License *
16 * along with this program; if not, write to the Free Software *
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, *
18 * MA 02111-1307 USA *
19 ***************************************************************************/
20
21 #ifndef __LS_ENGINECHANNEL_H__
22 #define __LS_ENGINECHANNEL_H__
23
24 #include "../../drivers/audio/AudioOutputDevice.h"
25 #include "Engine.h"
26
27 namespace LinuxSampler {
28
29 // just symbol prototyping
30 class AudioOutputDevice;
31
32 /** @brief Channel Interface for LinuxSampler Sampler Engines
33 *
34 * Every sampler engine can be used on several sampler channels and
35 * usually the same Engine instance is used on multiple sampler
36 * channels. For this every sampler engine must also implement a class
37 * which handles all channel dependant parameters and channel
38 * dependant execution code.
39 *
40 * This abstract base interface class defines all mandatory methods
41 * which have to be implemented by all engine channel implementations.
42 */
43 class EngineChannel {
44 public:
45
46 /////////////////////////////////////////////////////////////////
47 // abstract methods
48 // (these have to be implemented by the descendant)
49
50 virtual void PrepareLoadInstrument(const char* FileName, uint Instrument) = 0;
51 virtual void LoadInstrument() = 0;
52 virtual void SendNoteOn(uint8_t Key, uint8_t Velocity) = 0;
53 virtual void SendNoteOff(uint8_t Key, uint8_t Velocity) = 0;
54 virtual void SendPitchbend(int Pitch) = 0;
55 virtual void SendControlChange(uint8_t Controller, uint8_t Value) = 0;
56 virtual float Volume() = 0;
57 virtual void Volume(float f) = 0;
58 virtual uint Channels() = 0;
59 virtual void Connect(AudioOutputDevice* pAudioOut) = 0;
60 virtual void DisconnectAudioOutputDevice() = 0;
61 virtual void SetOutputChannel(uint EngineAudioChannel, uint AudioDeviceChannel) = 0;
62 virtual int OutputChannel(uint EngineAudioChannel) = 0;
63 virtual String InstrumentFileName() = 0;
64 virtual String InstrumentName() = 0;
65 virtual int InstrumentIndex() = 0;
66 virtual int InstrumentStatus() = 0;
67 virtual Engine* GetEngine() = 0;
68 virtual String EngineName() = 0;
69
70 virtual ~EngineChannel() {};
71 };
72
73 } // namespace LinuxSampler
74
75 #endif // __LS_ENGINECHANNEL_H__

  ViewVC Help
Powered by ViewVC