1 |
schoenebeck |
889 |
/*************************************************************************** |
2 |
|
|
* * |
3 |
|
|
* Copyright (C) 2005, 2006 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 "../drivers/midi/midi.h" |
26 |
|
|
#include "../drivers/midi/MidiInputDevice.h" |
27 |
|
|
#include "../drivers/midi/MidiInputPort.h" |
28 |
|
|
#include "Engine.h" |
29 |
|
|
|
30 |
|
|
namespace LinuxSampler { |
31 |
|
|
|
32 |
|
|
// just symbol prototyping |
33 |
|
|
class AudioOutputDevice; |
34 |
|
|
class MidiInputPort; |
35 |
|
|
|
36 |
|
|
/** @brief Channel Interface for LinuxSampler Sampler Engines |
37 |
|
|
* |
38 |
|
|
* Every sampler engine can be used on several sampler channels and |
39 |
|
|
* usually the same Engine instance is used on multiple sampler |
40 |
|
|
* channels. For this every sampler engine must also implement a class |
41 |
|
|
* which handles all channel dependant parameters and channel |
42 |
|
|
* dependant execution code. |
43 |
|
|
* |
44 |
|
|
* This abstract base interface class defines all mandatory methods |
45 |
|
|
* which have to be implemented by all engine channel implementations. |
46 |
|
|
*/ |
47 |
|
|
class EngineChannel { |
48 |
|
|
public: |
49 |
|
|
|
50 |
|
|
EngineChannel(); |
51 |
|
|
|
52 |
|
|
///////////////////////////////////////////////////////////////// |
53 |
|
|
// abstract methods |
54 |
|
|
// (these have to be implemented by the descendant) |
55 |
|
|
|
56 |
|
|
virtual void PrepareLoadInstrument(const char* FileName, uint Instrument) = 0; |
57 |
|
|
virtual void LoadInstrument() = 0; |
58 |
|
|
virtual void Reset() = 0; |
59 |
|
|
virtual void SendNoteOn(uint8_t Key, uint8_t Velocity) = 0; |
60 |
|
|
virtual void SendNoteOff(uint8_t Key, uint8_t Velocity) = 0; |
61 |
|
|
virtual void SendPitchbend(int Pitch) = 0; |
62 |
|
|
virtual void SendControlChange(uint8_t Controller, uint8_t Value) = 0; |
63 |
|
|
virtual bool StatusChanged(bool bNewStatus = false) = 0; |
64 |
|
|
virtual float Volume() = 0; |
65 |
|
|
virtual void Volume(float f) = 0; |
66 |
|
|
virtual uint Channels() = 0; |
67 |
|
|
virtual void Connect(AudioOutputDevice* pAudioOut) = 0; |
68 |
|
|
virtual void DisconnectAudioOutputDevice() = 0; |
69 |
|
|
virtual void SetOutputChannel(uint EngineAudioChannel, uint AudioDeviceChannel) = 0; |
70 |
|
|
virtual int OutputChannel(uint EngineAudioChannel) = 0; |
71 |
|
|
virtual void Connect(MidiInputPort* pMidiPort, midi_chan_t MidiChannel) = 0; |
72 |
|
|
virtual void DisconnectMidiInputPort() = 0; |
73 |
|
|
virtual MidiInputPort* GetMidiInputPort() = 0; |
74 |
|
|
virtual midi_chan_t MidiChannel() = 0; |
75 |
|
|
virtual String InstrumentFileName() = 0; |
76 |
|
|
virtual String InstrumentName() = 0; |
77 |
|
|
virtual int InstrumentIndex() = 0; |
78 |
|
|
virtual int InstrumentStatus() = 0; |
79 |
|
|
virtual Engine* GetEngine() = 0; |
80 |
|
|
virtual String EngineName() = 0; |
81 |
|
|
|
82 |
|
|
/** |
83 |
|
|
* Sets the mute state of this channel. |
84 |
|
|
* |
85 |
|
|
* @param state - specifies the mute state of this sampler channel. |
86 |
|
|
* @throws Exception - if state does not contain valid |
87 |
|
|
* value. |
88 |
|
|
*/ |
89 |
|
|
void SetMute(int state) throw (Exception); |
90 |
|
|
|
91 |
|
|
/** |
92 |
|
|
* Determines whether this channel is muted. |
93 |
|
|
* |
94 |
|
|
* @returns 1 if the channel is muted, 0 if the channel is not muted |
95 |
|
|
* and -1 if the channel is muted because of presence of at least |
96 |
|
|
* one solo channel. |
97 |
|
|
*/ |
98 |
|
|
int GetMute(); |
99 |
|
|
|
100 |
|
|
/** |
101 |
|
|
* Sets the solo state of this channel. |
102 |
|
|
* |
103 |
|
|
* @param solo - specifies whether this is a solo channel. |
104 |
|
|
*/ |
105 |
|
|
void SetSolo(bool solo); |
106 |
|
|
|
107 |
|
|
/** |
108 |
|
|
* Determines whether this is a solo channel. |
109 |
|
|
* |
110 |
|
|
* @returns true if this is a solo channel, false otherwise. |
111 |
|
|
*/ |
112 |
|
|
bool GetSolo(); |
113 |
|
|
|
114 |
|
|
int iSamplerChannelIndex; ///< FIXME: nasty hack, might be removed (should be 'virtual EngineChannel* EngineChannel() = 0;', but due to cyclic dependencies only a void* solution would be possible ATM) |
115 |
|
|
|
116 |
|
|
protected: |
117 |
|
|
virtual ~EngineChannel() {}; // MUST only be destroyed by EngineChannelFactory |
118 |
|
|
friend class EngineChannelFactory; |
119 |
|
|
|
120 |
|
|
private: |
121 |
|
|
int iMute; |
122 |
|
|
bool bSolo; |
123 |
|
|
}; |
124 |
|
|
|
125 |
|
|
} // namespace LinuxSampler |
126 |
|
|
|
127 |
|
|
#endif // __LS_ENGINECHANNEL_H__ |