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
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
|
/*
* Pure Data Packet system implementation.
* Copyright (c) by Tom Schouten <pdp@zzz.kotnet.org>
*
* 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.
*
*/
/* this file contains misc communication (packet) methods for pd */
#include "pdp.h"
#include "pdp_internals.h"
#include <stdio.h>
/* all symbols are C style */
#ifdef __cplusplus
extern "C"
{
#endif
t_symbol *_pdp_sym_pdp;
t_symbol *_pdp_sym_rro;
t_symbol *_pdp_sym_rrw;
t_symbol *_pdp_sym_prc;
t_symbol *_pdp_sym_dpd;
t_symbol *_pdp_sym_ins;
t_symbol *_pdp_sym_acc;
t_symbol *pdp_sym_pdp() {return _pdp_sym_pdp;}
t_symbol *pdp_sym_rro() {return _pdp_sym_rro;}
t_symbol *pdp_sym_rrw() {return _pdp_sym_rrw;}
t_symbol *pdp_sym_prc() {return _pdp_sym_prc;}
t_symbol *pdp_sym_dpd() {return _pdp_sym_dpd;}
t_symbol *pdp_sym_ins() {return _pdp_sym_ins;}
t_symbol *pdp_sym_acc() {return _pdp_sym_acc;}
/************** packet management and communication convenience functions ************/
/* send a packet to an outlet */
void outlet_pdp(t_outlet *out, int packetid)
{
t_atom atom[2];
SETFLOAT(atom+1, (float)packetid);
SETSYMBOL(atom+0, pdp_sym_rro());
outlet_anything(out, pdp_sym_pdp(), 2, atom);
SETSYMBOL(atom+0, pdp_sym_rrw());
outlet_anything(out, pdp_sym_pdp(), 2, atom);
SETSYMBOL(atom+0, pdp_sym_prc());
outlet_anything(out, pdp_sym_pdp(), 2, atom);
}
/* send an accumulation packet to an outlet */
void outlet_dpd(t_outlet *out, int packetid)
{
t_atom atom[2];
SETFLOAT(atom+1, (float)packetid);
SETSYMBOL(atom+0, pdp_sym_ins());
outlet_anything(out, pdp_sym_dpd(), 2, atom);
SETSYMBOL(atom+0, pdp_sym_acc());
outlet_anything(out, pdp_sym_dpd(), 2, atom);
}
/* unregister a packet and send it to an outlet */
void
pdp_packet_pass_if_valid(t_outlet *outlet, int *packet_ptr)
{
t_pdp *header = pdp_packet_header(*packet_ptr);
//if (-1 != *packet){
if (header){
/* if packet is exclusively owned, mark as passing */
if (1 == header->users) pdp_packet_mark_passing(packet_ptr);
/* send */
outlet_pdp(outlet, *packet_ptr);
/* if the packet is still here (was passing and not registered,
or it was a shared copy): unregister it */
if (-1 != *packet_ptr){
pdp_packet_unmark_passing(*packet_ptr);
pdp_packet_mark_unused(*packet_ptr);
*packet_ptr = -1;
}
}
}
void
pdp_packet_replace_if_valid(int *dpacket, int *spacket)
{
if (-1 != *spacket){
pdp_packet_mark_unused(*dpacket);
*dpacket = *spacket;
*spacket = -1;
}
}
int
pdp_packet_copy_ro_or_drop(int *dpacket, int spacket)
{
int drop = 0;
if (*dpacket == -1) *dpacket = pdp_packet_copy_ro(spacket);
else {
/* send a notification there is a dropped packet */
pdp_control_notify_drop(spacket);
drop = 1;
}
return drop;
}
int
pdp_packet_copy_rw_or_drop(int *dpacket, int spacket)
{
int drop = 0;
if (*dpacket == -1) *dpacket = pdp_packet_copy_rw(spacket);
else {
/* send a notification there is a dropped packet */
pdp_control_notify_drop(spacket);
drop = 1;
}
return drop;
}
int
pdp_packet_convert_ro_or_drop(int *dpacket, int spacket, t_pdp_symbol *template)
{
int drop = 0;
if (!template) return pdp_packet_copy_ro_or_drop(dpacket, spacket);
if (*dpacket == -1) *dpacket = pdp_packet_convert_ro(spacket, template);
else {
/* send a notification there is a dropped packet */
pdp_control_notify_drop(spacket);
drop = 1;
}
return drop;
}
int
pdp_packet_convert_rw_or_drop(int *dpacket, int spacket, t_pdp_symbol *template)
{
int drop = 0;
if (!template) return pdp_packet_copy_rw_or_drop(dpacket, spacket);
if (*dpacket == -1) *dpacket = pdp_packet_convert_rw(spacket, template);
else {
/* send a notification there is a dropped packet */
pdp_control_notify_drop(spacket);
drop = 1;
}
return drop;
}
void
pdp_sym_setup(void)
{
_pdp_sym_pdp = gensym("pdp");
_pdp_sym_rro = gensym("register_ro");
_pdp_sym_rrw = gensym("register_rw");
_pdp_sym_prc = gensym("process");
_pdp_sym_dpd = gensym("dpd");
_pdp_sym_ins = gensym("inspect");
_pdp_sym_acc = gensym("accumulate");
}
#ifdef __cplusplus
}
#endif
|
