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
|
/*
handling.h
Copyright (C) 2021 Richard Knight
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 3 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program; if not, write to the Free Software Foundation,
Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include <plugin.h>
const char* handleIdentifier = "::hnd%d";
/*
* Obtain global object of typename from global variables by handle
*/
template <typename T>
T* getHandle(csnd::Csound* csound, MYFLT handle) {
char buffer[32];
snprintf(buffer, 32, handleIdentifier, (int)handle);
return (T*) csound->query_global_variable(buffer);
}
/*
* Create global object of typename in global variables, returning handle
*/
template <typename T>
MYFLT createHandle(csnd::Csound* csound, T** data) {
char buffer[32];
int handle = 0;
snprintf(buffer, 32, handleIdentifier, handle);
while ((*data = (T*) csound->query_global_variable(buffer)) != NULL) {
snprintf(buffer, 32, handleIdentifier, ++handle);
}
csound->create_global_variable(buffer, sizeof(T));
*data = (T*) csound->query_global_variable(buffer);
return FL(handle);
}
|