source: roaraudio/include/libroar/vio.h @ 1522:2ab4c1e3d956

Last change on this file since 1522:2ab4c1e3d956 was 1522:2ab4c1e3d956, checked in by phi, 15 years ago

added ROAR_VIO_CTL_SET_DBLKSIZE, added blocksize= stream option
File size: 8.9 KB
Line 
1//vio.h:
2
3/*
4 *      Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2008, 2009
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, 675 Mass Ave, Cambridge, MA 02139, USA.
22 *
23 *  NOTE for everyone want's to change something and send patches:
24 *  read README and HACKING! There a addition information on
25 *  the license of this document you need to read before you send
26 *  any patches.
27 *
28 *  NOTE for uses of non-GPL (LGPL,...) software using libesd, libartsc
29 *  or libpulse*:
30 *  The libs libroaresd, libroararts and libroarpulse link this lib
31 *  and are therefore GPL. Because of this it may be illigal to use
32 *  them with any software that uses libesd, libartsc or libpulse*.
33 */
34
35#ifndef _LIBROARVIO_H_
36#define _LIBROARVIO_H_
37
38#include "libroar.h"
39
40// CTLs:
41/*
42 * 0xAAAABBBB
43 * AAAA:
44 *   0x0001 -> Basic stream calls
45 *   0x0002 -> Driver calls
46 *
47 * BBBB:
48 *   0x0XXX -> Client
49 *   0x1XXX -> Server
50 */
51
52#define ROAR_VIO_CTL_GET                  0x1
53#define ROAR_VIO_CTL_SET                  0x2
54#define ROAR_VIO_CTL_CLIENT            0x0000
55#define ROAR_VIO_CTL_SERVER            0x1000
56#define ROAR_VIO_CTL_GENERIC     (0x0000<<16)
57#define ROAR_VIO_CTL_STREAM      (0x0001<<16)
58#define ROAR_VIO_CTL_DRIVER      (0x0002<<16)
59
60// basic calls:
61#define ROAR_VIO_CTL_GET_NEXT          (ROAR_VIO_CTL_GENERIC|ROAR_VIO_CTL_GET|0x0100)
62#define ROAR_VIO_CTL_SET_NEXT          (ROAR_VIO_CTL_GENERIC|ROAR_VIO_CTL_SET|0x0100)
63#define ROAR_VIO_CTL_GET_FH            (ROAR_VIO_CTL_GENERIC|0x0110)
64#define ROAR_VIO_CTL_GET_READ_FH       (ROAR_VIO_CTL_GENERIC|0x0111)
65#define ROAR_VIO_CTL_GET_WRITE_FH      (ROAR_VIO_CTL_GENERIC|0x0112)
66#define ROAR_VIO_CTL_SELECT            (ROAR_VIO_CTL_GENERIC|0x0120)
67
68// stream:
69#define ROAR_VIO_CTL_SET_STREAM    (ROAR_VIO_CTL_STREAM|ROAR_VIO_CTL_CLIENT|ROAR_VIO_CTL_SET) /* normal streams */
70#define ROAR_VIO_CTL_GET_STREAM    (ROAR_VIO_CTL_STREAM|ROAR_VIO_CTL_CLIENT|ROAR_VIO_CTL_GET)
71
72#define ROAR_VIO_CTL_SET_SSTREAM   (ROAR_VIO_CTL_STREAM|ROAR_VIO_CTL_SERVER|ROAR_VIO_CTL_SET) /* server streams */
73#define ROAR_VIO_CTL_GET_SSTREAM   (ROAR_VIO_CTL_STREAM|ROAR_VIO_CTL_SERVER|ROAR_VIO_CTL_GET)
74
75#define ROAR_VIO_CTL_SET_AUINFO    (ROAR_VIO_CTL_STREAM|ROAR_VIO_CTL_SET|0x2000) /* set a struct roar_audio_info */
76#define ROAR_VIO_CTL_GET_AUINFO    (ROAR_VIO_CTL_STREAM|ROAR_VIO_CTL_GET|0x2000) /* get a struct roar_audio_info */
77
78#define ROAR_VIO_CTL_GET_DELAY     (ROAR_VIO_CTL_STREAM|ROAR_VIO_CTL_GET|0x010) /* return in bytes as the vio interface */
79                                              /* does not know anything about streams */
80
81#define ROAR_VIO_CTL_GET_DBLOCKS   (ROAR_VIO_CTL_DRIVER|0x0001) /* get Driver Blocks */
82#define ROAR_VIO_CTL_SET_DBLOCKS   (ROAR_VIO_CTL_DRIVER|0x0002) /* set Driver Blocks */
83#define ROAR_VIO_CTL_GET_DBLKSIZE  (ROAR_VIO_CTL_DRIVER|0x0003) /* get Driver Blocks size (in byte) */
84#define ROAR_VIO_CTL_SET_DBLKSIZE  (ROAR_VIO_CTL_DRIVER|0x0004) /* set Driver Blocks size (in byte) */
85
86// sys io:
87
88struct roar_vio_calls {
89 void * inst;
90/*
91 ssize_t (*read) (int fd, void *buf, size_t count, void * inst);
92 ssize_t (*write)(int fd, void *buf, size_t count, void * inst);
93 off_t   (*lseek)(int fildes, off_t offset, int whence, void * inst);
94*/
95 ssize_t (*read    )(struct roar_vio_calls * vio, void *buf, size_t count);
96 ssize_t (*write   )(struct roar_vio_calls * vio, void *buf, size_t count);
97 off_t   (*lseek   )(struct roar_vio_calls * vio, off_t offset, int whence);
98 int     (*nonblock)(struct roar_vio_calls * vio, int state);
99 int     (*sync    )(struct roar_vio_calls * vio);
100 int     (*ctl     )(struct roar_vio_calls * vio, int cmd, void * data);
101 int     (*close   )(struct roar_vio_calls * vio);
102};
103
104int roar_vio_init_calls (struct roar_vio_calls * calls);
105
106int roar_vio_set_inst (struct roar_vio_calls * vio, void * inst);
107int roar_vio_set_fh   (struct roar_vio_calls * vio, int fh);
108
109int roar_vio_get_fh   (struct roar_vio_calls * vio);
110
111ssize_t roar_vio_read    (struct roar_vio_calls * vio, void *buf, size_t count);
112ssize_t roar_vio_write   (struct roar_vio_calls * vio, void *buf, size_t count);
113off_t   roar_vio_lseek   (struct roar_vio_calls * vio, off_t offset, int whence);
114int     roar_vio_nonblock(struct roar_vio_calls * vio, int state);
115int     roar_vio_sync    (struct roar_vio_calls * vio);
116int     roar_vio_ctl     (struct roar_vio_calls * vio, int cmd, void * data);
117int     roar_vio_close   (struct roar_vio_calls * vio);
118
119// some alias functions:
120#define roar_vio_puts(vio,s) roar_vio_write((vio), (s), strlen((s)))
121//#define roar_vio_putc(vio,c) roar_vio_write((vio), &(c), 1)
122int     roar_vio_putc    (struct roar_vio_calls * vio, char c);
123int     roar_vio_getc    (struct roar_vio_calls * vio);
124
125int     roar_vio_printf  (struct roar_vio_calls * vio, const char *format, ...);
126
127// converters:
128int     roar_vio_open_file     (struct roar_vio_calls * calls, char * filename, int flags, mode_t mode);
129int     roar_vio_open_fh       (struct roar_vio_calls * calls, int fh);
130int     roar_vio_open_fh_socket(struct roar_vio_calls * calls, int fh);
131
132int     roar_vio_open_socket   (struct roar_vio_calls * calls, char * host, int port);
133int     roar_vio_open_socket_listen(struct roar_vio_calls * calls, int type, char * host, int port);
134
135int     roar_vio_simple_stream (struct roar_vio_calls * calls, int rate, int channels, int bits, int codec,
136                                                               char * server, int dir, char * name);
137
138int     roar_vio_open_stdio    (struct roar_vio_calls * calls, FILE * dst);
139
140FILE *  roar_vio_to_stdio      (struct roar_vio_calls * calls, int flags);
141#if defined(ROAR_HAVE_FOPENCOOKIE) || defined(ROAR_HAVE_FUNOPEN)
142int roar_vio_to_stdio_close (void *__cookie);
143#endif
144#if defined(ROAR_HAVE_FOPENCOOKIE)
145__ssize_t roar_vio_to_stdio_read (void *__cookie, char *__buf, size_t __nbytes);
146__ssize_t roar_vio_to_stdio_write (void *__cookie, __const char *__buf, size_t __n);
147int roar_vio_to_stdio_lseek (void *__cookie, _IO_off64_t *__pos, int __w);
148#elif defined(ROAR_HAVE_FUNOPEN)
149int roar_vio_to_stdio_read(void *__cookie, char *__buf, int __nbytes);
150int roar_vio_to_stdio_write(void *__cookie, const char *__buf, int __n);
151fpos_t roar_vio_to_stdio_lseek(void *__cookie, fpos_t __pos, int __w);
152#endif
153
154
155// possible VIOs:
156
157// basic
158ssize_t roar_vio_basic_read    (struct roar_vio_calls * vio, void *buf, size_t count);
159ssize_t roar_vio_basic_write   (struct roar_vio_calls * vio, void *buf, size_t count);
160off_t   roar_vio_basic_lseek   (struct roar_vio_calls * vio, off_t offset, int whence);
161int     roar_vio_basic_nonblock(struct roar_vio_calls * vio, int state);
162int     roar_vio_basic_sync    (struct roar_vio_calls * vio);
163int     roar_vio_basic_ctl     (struct roar_vio_calls * vio, int cmd, void * data);
164int     roar_vio_basic_close   (struct roar_vio_calls * vio);
165
166// null
167// this is a read and write in one!
168ssize_t roar_vio_null_rw    (struct roar_vio_calls * vio, void *buf, size_t count);
169
170// pass
171
172int     roar_vio_open_pass    (struct roar_vio_calls * calls, struct roar_vio_calls * dst);
173ssize_t roar_vio_pass_read    (struct roar_vio_calls * vio, void *buf, size_t count);
174ssize_t roar_vio_pass_write   (struct roar_vio_calls * vio, void *buf, size_t count);
175off_t   roar_vio_pass_lseek   (struct roar_vio_calls * vio, off_t offset, int whence);
176int     roar_vio_pass_nonblock(struct roar_vio_calls * vio, int state);
177int     roar_vio_pass_sync    (struct roar_vio_calls * vio);
178int     roar_vio_pass_ctl     (struct roar_vio_calls * vio, int cmd, void * data);
179int     roar_vio_pass_close   (struct roar_vio_calls * vio);
180
181// re-read/write
182
183int     roar_vio_open_re (struct roar_vio_calls * calls, struct roar_vio_calls * dst);
184ssize_t roar_vio_re_read (struct roar_vio_calls * vio, void *buf, size_t count);
185ssize_t roar_vio_re_write(struct roar_vio_calls * vio, void *buf, size_t count);
186off_t   roar_vio_re_lseek(struct roar_vio_calls * vio, off_t offset, int whence);
187
188// stdio
189ssize_t roar_vio_stdio_read    (struct roar_vio_calls * vio, void *buf, size_t count);
190ssize_t roar_vio_stdio_write   (struct roar_vio_calls * vio, void *buf, size_t count);
191off_t   roar_vio_stdio_lseek   (struct roar_vio_calls * vio, off_t offset, int whence);
192int     roar_vio_stdio_sync    (struct roar_vio_calls * vio);
193int     roar_vio_stdio_ctl     (struct roar_vio_calls * vio, int cmd, void * data);
194int     roar_vio_stdio_close   (struct roar_vio_calls * vio);
195
196#endif
197
198//ll
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