source: roaraudio/libroar/asyncctl.c @ 5381:430b1d26e12d

Last change on this file since 5381:430b1d26e12d was 5381:430b1d26e12d, checked in by phi, 12 years ago

updated copyright years

File size: 3.0 KB
Line 
1//asyncctl.c:
2
3/*
4 *      Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2010-2012
5 *
6 *  This file is part of libroar a part of RoarAudio,
7 *  a cross-platform sound system for both, home and professional use.
8 *  See README for details.
9 *
10 *  This file is free software; you can redistribute it and/or modify
11 *  it under the terms of the GNU General Public License version 3
12 *  as published by the Free Software Foundation.
13 *
14 *  libroar is distributed in the hope that it will be useful,
15 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
16 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17 *  GNU General Public License for more details.
18 *
19 *  You should have received a copy of the GNU General Public License
20 *  along with this software; see the file COPYING.  If not, write to
21 *  the Free Software Foundation, 51 Franklin Street, Fifth Floor,
22 *  Boston, MA 02110-1301, USA.
23 *
24 *  NOTE for everyone want's to change something and send patches:
25 *  read README and HACKING! There a addition information on
26 *  the license of this document you need to read before you send
27 *  any patches.
28 *
29 *  NOTE for uses of non-GPL (LGPL,...) software using libesd, libartsc
30 *  or libpulse*:
31 *  The libs libroaresd, libroararts and libroarpulse link this lib
32 *  and are therefore GPL. Because of this it may be illigal to use
33 *  them with any software that uses libesd, libartsc or libpulse*.
34 */
35
36#include "libroar.h"
37
38int roar_wait (struct roar_connection * con, struct roar_event * triggered, struct roar_event * events, size_t num) {
39 struct roar_message m;
40 uint16_t * u16 = (uint16_t *) m.data;
41 void * vp = m.data;
42 size_t i, len_left, len_have, tmp;
43
44 if ( con == NULL || triggered == NULL )
45  return -1;
46
47 if ( num == 0 )
48  return 0;
49
50 if ( events == NULL )
51  return -1;
52
53 memset(&m, 0, sizeof(m));
54
55 m.cmd = ROAR_CMD_WAIT;
56 m.stream = -1;
57
58 u16[0] = ROAR_HOST2NET16(0); // version
59 u16[1] = ROAR_HOST2NET16(0); // flags
60
61 vp += 4; // we have 4 byte header (version + flags)
62
63 len_left = sizeof(m.data) - 4;
64 len_have = 4;
65
66 for (i = 0; i < num; i++) {
67  tmp = len_left;
68  if ( roar_event_to_blob(&(events[i]), vp, &tmp) == -1 )
69   return -1;
70
71  len_left -= tmp;
72  len_have += tmp;
73  vp       += tmp;
74 }
75
76 m.datalen = len_have;
77
78 if ( roar_req3(con, &m, NULL) != 0 )
79  return -1;
80
81 if ( m.cmd != ROAR_CMD_OK )
82  return -1;
83
84 u16[0] = ROAR_NET2HOST16(u16[0]);
85 u16[1] = ROAR_NET2HOST16(u16[1]);
86
87 // check if we have a complet header:
88 if ( m.datalen < 2 )
89  return -1;
90
91 // check if we have a unsupported version or flags:
92 if ( u16[0] != 0 || u16[1] != 0 )
93  return -1;
94
95 vp  = (void*)m.data;
96 vp += 4;
97 len_have = tmp = m.datalen - 4;
98
99 memset(triggered, 0, sizeof(struct roar_event));
100
101 if ( roar_event_from_blob(triggered, vp, &tmp) != 0 )
102  return -1;
103
104 // test if we have a length match:
105 if ( len_have != tmp )
106  return -1;
107
108 // we now have an event.
109
110 // we maybe have some data, need to reset this as it is of a local buffer:
111 triggered->arg2 = NULL;
112 triggered->arg2_len = 0;
113
114 return 0;
115}
116
117//ll
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