1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
|
/*
Copyright (C) 2010 Paul Davis
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef __ardour_unknown_processor_h__
#define __ardour_unknown_processor_h__
#include "ardour/processor.h"
namespace ARDOUR {
/** A stub Processor that can be used in place of a `real' one that cannot be
* created for some reason; usually because it requires a plugin which is not
* present. UnknownProcessors are special-cased in a few places, notably
* in route configuration and signal processing, so that on encountering them
* configuration or processing stops.
*
* When a Processor is missing from a Route, the following processors cannot
* be configured, as the missing Processor's output port configuration is
* unknown.
*
* The main utility of the UnknownProcessor is that it allows state
* to be preserved, so that, for example, loading and re-saving a
* session on a machine without a particular plugin will not corrupt
* the session.
*/
class LIBARDOUR_API UnknownProcessor : public Processor
{
public:
UnknownProcessor (Session &, XMLNode const &);
/* These processors are hidden from view */
bool display_to_user () const {
return false;
}
bool can_support_io_configuration (const ChanCount &, ChanCount &) {
return false;
}
XMLNode & state (bool);
private:
XMLNode _state;
};
}
#endif
|
