source: roaraudio/libroar/vio_magic.c @ 3811:49db840fb4f4

Last change on this file since 3811:49db840fb4f4 was 3811:49db840fb4f4, checked in by phi, 14 years ago

fixed some copyright statements

File size: 3.6 KB
Line 
1
2
3/*
4 *      Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2009-2010
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_vio_open_magic    (struct roar_vio_calls * calls, struct roar_vio_calls * dst, int * codec);
39int     roar_vio_magic_close   (struct roar_vio_calls * vio);
40
41ssize_t roar_vio_magic_read    (struct roar_vio_calls * vio, void *buf, size_t count) {
42 struct roar_vio_magic * self = (struct roar_vio_magic *)(vio->inst);
43 struct roar_buffer    * inp;
44 void * calls;
45 size_t len;
46
47 if (self == NULL)
48  return -1;
49
50 if ( roar_stack_get_cur(&(self->vios), &calls) == -1 )
51  return -1;
52
53 inp = &(self->inp);
54
55 if ( roar_buffer_get_len(inp, &len) == -1 )
56  return -1;
57
58 if ( len ) {
59  len = len > count ? count : len;
60  if ( roar_buffer_shift_out(&inp, buf, &len) == -1 )
61   return -1;
62 }
63
64 count -= len;
65 buf += len;
66
67 if ( count ) {
68  if ( (count = roar_vio_read((struct roar_vio_calls*) calls, buf, count)) == -1 )
69   return len;
70
71  return len+count;
72 }
73
74 return len;
75}
76
77ssize_t roar_vio_magic_write   (struct roar_vio_calls * vio, void *buf, size_t count) {
78 struct roar_vio_magic * self = (struct roar_vio_magic *)(vio->inst);
79 void * calls;
80
81 if (self == NULL)
82  return -1;
83
84 if ( roar_stack_get_cur(&(self->vios), &calls) == -1 )
85  return -1;
86
87 return roar_vio_write((struct roar_vio_calls*)calls, buf, count);
88}
89
90off_t   roar_vio_magic_lseek   (struct roar_vio_calls * vio, off_t offset, int whence) {
91 struct roar_vio_magic * self = (struct roar_vio_magic *)(vio->inst);
92 void * calls;
93
94 if (self == NULL)
95  return -1;
96
97 if ( roar_stack_get_cur(&(self->vios), &calls) == -1 )
98  return -1;
99
100 return roar_vio_lseek((struct roar_vio_calls*)calls, offset, whence);
101}
102
103int     roar_vio_magic_nonblock(struct roar_vio_calls * vio, int state) {
104 struct roar_vio_magic * self = (struct roar_vio_magic *)(vio->inst);
105 void * calls;
106
107 if (self == NULL)
108  return -1;
109
110 if ( roar_stack_get_cur(&(self->vios), &calls) == -1 )
111  return -1;
112
113 return roar_vio_nonblock((struct roar_vio_calls*)calls, state);
114}
115
116int     roar_vio_magic_sync    (struct roar_vio_calls * vio) {
117 struct roar_vio_magic * self = (struct roar_vio_magic *)(vio->inst);
118 void * calls;
119
120 if (self == NULL)
121  return -1;
122
123 if ( roar_stack_get_cur(&(self->vios), &calls) == -1 )
124  return -1;
125
126 return roar_vio_sync((struct roar_vio_calls*)calls);
127}
128
129//ll
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