source: roaraudio/libroar/vio_stdio.c @ 5823:f9f70dbaa376

Last change on this file since 5823:f9f70dbaa376 was 5823:f9f70dbaa376, checked in by phi, 11 years ago

updated copyright

File size: 5.5 KB
Line 
1//vio_stdio.c:
2
3/*
4 *      Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2009-2013
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_stdio    (struct roar_vio_calls * calls, FILE * dst) {
39#ifndef ROAR_WITHOUT_VIO_STDIO
40 if ( calls == NULL || dst == NULL )
41  return -1;
42
43 memset(calls, 0, sizeof(struct roar_vio_calls));
44 calls->flags    = ROAR_VIO_FLAGS_NONE;
45 calls->refc     = 1;
46
47 calls->read  = roar_vio_stdio_read;
48 calls->write = roar_vio_stdio_write;
49 calls->lseek = roar_vio_stdio_lseek;
50 calls->sync  = roar_vio_stdio_sync;
51 calls->close = roar_vio_stdio_close;
52
53 calls->inst  = dst;
54
55 return 0;
56#else
57 return -1;
58#endif
59}
60
61FILE *  roar_vio_to_stdio      (struct roar_vio_calls * calls, int flags) {
62#ifdef ROAR_HAVE_FOPENCOOKIE
63 cookie_io_functions_t foc_funcs;
64#endif
65
66 // (void)flags is the the individual sections because later added APIs
67 // may require those flags.
68
69 if ( calls == NULL )
70  return NULL;
71
72#if defined(ROAR_HAVE_FOPENCOOKIE)
73 (void)flags;
74
75 memset(&foc_funcs, 0, sizeof(cookie_io_functions_t));
76
77 foc_funcs.close = roar_vio_to_stdio_close;
78 foc_funcs.read  = roar_vio_to_stdio_read;
79 foc_funcs.write = roar_vio_to_stdio_write;
80
81 return fopencookie((void*) calls, "rw", foc_funcs);
82#elif defined(ROAR_HAVE_FUNOPEN)
83 (void)flags;
84
85 return funopen((void*) calls, roar_vio_to_stdio_read,  roar_vio_to_stdio_write,
86                               roar_vio_to_stdio_lseek, roar_vio_to_stdio_close);
87#else
88 return NULL;
89#endif
90}
91
92#if defined(ROAR_HAVE_FOPENCOOKIE) || defined(ROAR_HAVE_FUNOPEN)
93int roar_vio_to_stdio_close (void *__cookie) {
94 return roar_vio_close((struct roar_vio_calls *) __cookie);
95}
96
97#if defined(ROAR_HAVE_FOPENCOOKIE)
98ssize_t roar_vio_to_stdio_read (void *__cookie, char *__buf, size_t __nbytes) {
99#elif defined(ROAR_HAVE_FUNOPEN)
100int roar_vio_to_stdio_read(void *__cookie, char *__buf, int __nbytes) {
101#endif
102 return roar_vio_read((struct roar_vio_calls *) __cookie, __buf, __nbytes);
103}
104
105#if defined(ROAR_HAVE_FOPENCOOKIE)
106ssize_t roar_vio_to_stdio_write (void *__cookie, __const char *__buf, size_t __n) {
107#elif defined(ROAR_HAVE_FUNOPEN)
108int roar_vio_to_stdio_write(void *__cookie, const char *__buf, int __n) {
109#endif
110 ROAR_DBG("roar_vio_to_stdio_write(*) = ?");
111 return roar_vio_write((struct roar_vio_calls *) __cookie, (char *) __buf, __n);
112}
113
114#if defined(ROAR_HAVE_FOPENCOOKIE)
115int roar_vio_to_stdio_lseek (void *__cookie, _IO_off64_t *__pos, int __w);
116#elif defined(ROAR_HAVE_FUNOPEN)
117fpos_t roar_vio_to_stdio_lseek(void *__cookie, fpos_t __pos, int __w) {
118 return roar_vio_lseek((struct roar_vio_calls *) __cookie, __pos, __w);
119}
120#endif
121#endif
122
123// VIOs:
124
125// stdio:
126#ifndef ROAR_WITHOUT_VIO_STDIO
127ssize_t roar_vio_stdio_read    (struct roar_vio_calls * vio, void *buf, size_t count) {
128 return fread(buf, 1, count, (FILE*)(vio->inst));
129}
130
131ssize_t roar_vio_stdio_write   (struct roar_vio_calls * vio, void *buf, size_t count) {
132 return fwrite(buf, 1, count, (FILE*)(vio->inst));
133}
134
135roar_off_t   roar_vio_stdio_lseek   (struct roar_vio_calls * vio, roar_off_t offset, int whence) {
136// ftell() is broken on win. It sometimes returnes the binary offset and sometimes
137// the text mode offset (why? why are both diffrent?).
138#if defined(ROAR_HAVE_FSEEK) && defined(ROAR_HAVE_FTELL) && !defined(ROAR_TARGET_WIN32)
139 if ( fseek((FILE*)(vio->inst), offset, whence) == -1 )
140  return -1;
141
142 return ftell((FILE*)(vio->inst));
143#else
144 return (roar_off_t)-1;
145#endif
146}
147
148int     roar_vio_stdio_sync    (struct roar_vio_calls * vio) {
149 return fflush((FILE*)(vio->inst));
150}
151
152int     roar_vio_stdio_ctl     (struct roar_vio_calls * vio, roar_vio_ctl_t cmd, void * data) {
153
154 if ( vio == NULL || cmd == -1 )
155  return -1;
156
157 switch (cmd) {
158  case ROAR_VIO_CTL_GET_NAME:
159    if ( data == NULL )
160     return -1;
161
162    *(char**)data = "stdio";
163    return 0;
164   break;
165#ifdef ROAR_HAVE_FILENO
166  case ROAR_VIO_CTL_GET_FH:
167  case ROAR_VIO_CTL_GET_READ_FH:
168  case ROAR_VIO_CTL_GET_WRITE_FH:
169  case ROAR_VIO_CTL_GET_SELECT_FH:
170  case ROAR_VIO_CTL_GET_SELECT_READ_FH:
171  case ROAR_VIO_CTL_GET_SELECT_WRITE_FH:
172   *(int*)data = fileno((FILE*)(vio->inst));
173    return 0;
174   break;
175#endif
176 }
177
178 return -1;
179}
180
181int     roar_vio_stdio_close   (struct roar_vio_calls * vio) {
182 return fclose((FILE*)(vio->inst));
183}
184
185#endif
186
187//ll
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