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
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
|
/* gAlan - Graphical Audio Language
* Copyright (C) 1999 Tony Garnock-Jones
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <stddef.h>
#include <gdk/gdk.h>
#include <gtk/gtk.h>
#include <gmodule.h>
#include "global.h"
#include "generator.h"
#include "comp.h"
#include "control.h"
#include "gencomp.h"
#define GENERATOR_CLASS_NAME "reverse"
#define GENERATOR_CLASS_PATH "Timebase/Reverse"
#define SIG_INPUT 0
#define SIG_OUTPUT 0
PRIVATE SAMPLETIME output_range(Generator *g, OutputSignalDescriptor *sig) {
return gen_get_randomaccess_input_range(g, SIG_INPUT, 0);
}
PRIVATE gboolean output_generator(Generator *g, OutputSignalDescriptor *sig,
SAMPLETIME offset, SAMPLE *buf, int buflen) {
SAMPLETIME inoffset;
SAMPLETIME len = gen_get_randomaccess_input_range(g, SIG_INPUT, 0);
int inbuflen = buflen;
SAMPLE *inbuf = buf;
int i, j;
inoffset = len - offset - buflen;
if (inoffset <= -buflen)
return FALSE;
if (inoffset < 0) {
memset(buf, 0, -inoffset * sizeof(SAMPLE));
inbuflen += inoffset; /* *decrease* inbuflen */
inbuf += (-inoffset); /* *advance* inbuf */
inoffset = 0;
}
if (!gen_read_randomaccess_input(g, SIG_INPUT, 0, inoffset, inbuf, inbuflen))
return FALSE;
for (i = 0, j = (buflen - 1); i < j; i++, j--) {
SAMPLE tmp = buf[i];
buf[i] = buf[j];
buf[j] = tmp;
}
return TRUE;
}
PRIVATE InputSignalDescriptor input_sigs[] = {
{ "Input", SIG_FLAG_RANDOMACCESS },
{ NULL, }
};
PRIVATE OutputSignalDescriptor output_sigs[] = {
{ "Output", SIG_FLAG_RANDOMACCESS, { NULL, { output_range, output_generator } } },
{ NULL, }
};
PRIVATE ControlDescriptor controls[] = {
/* { kind, name, min,max,step,page, size,editable, is_dst,queue_number,
init,destroy,refresh,refresh_data }, */
{ CONTROL_KIND_NONE, }
};
PRIVATE void setup_class(void) {
GeneratorClass *k = gen_new_generatorclass(GENERATOR_CLASS_NAME, FALSE, 0, 0,
input_sigs, output_sigs, controls,
NULL, NULL, NULL, NULL);
gencomp_register_generatorclass(k, FALSE, GENERATOR_CLASS_PATH,
NULL,
NULL);
}
PUBLIC void init_plugin_reverse(void) {
setup_class();
}
|
