1 | //vio.c: |
---|
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 | #include "libroar.h" |
---|
36 | |
---|
37 | int roar_vio_init_calls (struct roar_vio_calls * calls) { |
---|
38 | if ( calls == NULL ) |
---|
39 | return -1; |
---|
40 | |
---|
41 | memset((void*)calls, 0, sizeof(struct roar_vio_calls)); |
---|
42 | |
---|
43 | /* |
---|
44 | calls->read = (ssize_t (*)(int fd, void *buf, size_t count, void * inst))read; |
---|
45 | calls->write = (ssize_t (*)(int fd, void *buf, size_t count, void * inst))write; |
---|
46 | calls->lseek = (off_t (*)(int fildes, off_t offset, int whence, void * inst))lseek; |
---|
47 | */ |
---|
48 | |
---|
49 | calls->read = roar_vio_basic_read; |
---|
50 | calls->write = roar_vio_basic_write; |
---|
51 | calls->lseek = roar_vio_basic_lseek; |
---|
52 | calls->nonblock = roar_vio_basic_nonblock; |
---|
53 | calls->sync = roar_vio_basic_sync; |
---|
54 | calls->close = roar_vio_basic_close; |
---|
55 | |
---|
56 | return 0; |
---|
57 | } |
---|
58 | |
---|
59 | int roar_vio_set_inst (struct roar_vio_calls * vio, void * inst) { |
---|
60 | if ( vio == NULL ) |
---|
61 | return -1; |
---|
62 | |
---|
63 | vio->inst = inst; |
---|
64 | |
---|
65 | return 0; |
---|
66 | } |
---|
67 | |
---|
68 | int roar_vio_set_fh (struct roar_vio_calls * vio, int fh) { |
---|
69 | return roar_vio_set_inst(vio, (void*)(ROAR_INSTINT)(fh + 1)); |
---|
70 | } |
---|
71 | |
---|
72 | int roar_vio_get_fh (struct roar_vio_calls * vio) { |
---|
73 | if ( vio == NULL ) |
---|
74 | return -1; |
---|
75 | |
---|
76 | return ((int)(ROAR_INSTINT)vio->inst) - 1; |
---|
77 | } |
---|
78 | |
---|
79 | |
---|
80 | ssize_t roar_vio_read (struct roar_vio_calls * vio, void *buf, size_t count) { |
---|
81 | ROAR_DBG("roar_vio_read(vio=%p, buf=%p, count=%u) = ?", vio, buf, (unsigned int)count); |
---|
82 | |
---|
83 | if ( vio == NULL ) |
---|
84 | return -1; |
---|
85 | |
---|
86 | if ( vio->read == NULL ) |
---|
87 | return -1; |
---|
88 | |
---|
89 | return vio->read(vio, buf, count); |
---|
90 | } |
---|
91 | |
---|
92 | ssize_t roar_vio_write(struct roar_vio_calls * vio, void *buf, size_t count) { |
---|
93 | if ( vio == NULL ) |
---|
94 | return -1; |
---|
95 | |
---|
96 | if ( vio->write == NULL ) |
---|
97 | return -1; |
---|
98 | |
---|
99 | return vio->write(vio, buf, count); |
---|
100 | } |
---|
101 | |
---|
102 | off_t roar_vio_lseek(struct roar_vio_calls * vio, off_t offset, int whence) { |
---|
103 | if ( vio == NULL ) |
---|
104 | return -1; |
---|
105 | |
---|
106 | if ( vio->lseek == NULL ) |
---|
107 | return -1; |
---|
108 | |
---|
109 | return vio->lseek(vio, offset, whence); |
---|
110 | } |
---|
111 | |
---|
112 | int roar_vio_nonblock(struct roar_vio_calls * vio, int state) { |
---|
113 | if ( vio == NULL ) |
---|
114 | return -1; |
---|
115 | |
---|
116 | if ( vio->nonblock == NULL ) |
---|
117 | return -1; |
---|
118 | |
---|
119 | return vio->nonblock(vio, state); |
---|
120 | } |
---|
121 | |
---|
122 | int roar_vio_sync (struct roar_vio_calls * vio) { |
---|
123 | if ( vio == NULL ) |
---|
124 | return -1; |
---|
125 | |
---|
126 | if ( vio->sync == NULL ) |
---|
127 | return -1; |
---|
128 | |
---|
129 | return vio->sync(vio); |
---|
130 | } |
---|
131 | |
---|
132 | int roar_vio_ctl (struct roar_vio_calls * vio, int cmd, void * data) { |
---|
133 | if ( vio == NULL ) |
---|
134 | return -1; |
---|
135 | |
---|
136 | if ( vio->ctl == NULL ) |
---|
137 | return -1; |
---|
138 | |
---|
139 | return vio->ctl(vio, cmd, data); |
---|
140 | } |
---|
141 | |
---|
142 | int roar_vio_close (struct roar_vio_calls * vio) { |
---|
143 | if ( vio == NULL ) |
---|
144 | return -1; |
---|
145 | |
---|
146 | if ( vio->close == NULL ) |
---|
147 | return -1; |
---|
148 | |
---|
149 | return vio->close(vio); |
---|
150 | } |
---|
151 | |
---|
152 | int roar_vio_putc (struct roar_vio_calls * vio, char c) { |
---|
153 | return roar_vio_write(vio, &c, 1); |
---|
154 | } |
---|
155 | |
---|
156 | int roar_vio_getc (struct roar_vio_calls * vio) { |
---|
157 | unsigned char c; |
---|
158 | |
---|
159 | if ( roar_vio_read(vio, &c, 1) != 1 ) |
---|
160 | return EOF; |
---|
161 | |
---|
162 | return c; |
---|
163 | } |
---|
164 | |
---|
165 | int roar_vio_printf(struct roar_vio_calls * vio, const char *format, ...) { |
---|
166 | va_list ap; |
---|
167 | int ret; |
---|
168 | char buf[8192]; |
---|
169 | |
---|
170 | va_start(ap, format); |
---|
171 | ret = vsnprintf(buf, 8192, format, ap); |
---|
172 | va_end(ap); |
---|
173 | |
---|
174 | return roar_vio_write(vio, buf, ret); |
---|
175 | } |
---|
176 | |
---|
177 | // converters: |
---|
178 | int roar_vio_open_file (struct roar_vio_calls * calls, char * filename, int flags, mode_t mode) { |
---|
179 | int fh; |
---|
180 | |
---|
181 | if ( calls == NULL || filename == NULL ) |
---|
182 | return -1; |
---|
183 | |
---|
184 | if ( (fh = open(filename, flags, mode)) == -1 ) |
---|
185 | return -1; |
---|
186 | |
---|
187 | if ( roar_vio_open_fh(calls, fh) == -1 ) { |
---|
188 | close(fh); |
---|
189 | return -1; |
---|
190 | } |
---|
191 | |
---|
192 | return 0; |
---|
193 | } |
---|
194 | |
---|
195 | int roar_vio_open_fh (struct roar_vio_calls * calls, int fh) { |
---|
196 | if ( calls == NULL ) |
---|
197 | return -1; |
---|
198 | |
---|
199 | if ( roar_vio_init_calls(calls) == -1 ) |
---|
200 | return -1; |
---|
201 | |
---|
202 | return roar_vio_set_fh(calls, fh); |
---|
203 | } |
---|
204 | |
---|
205 | int roar_vio_open_fh_socket(struct roar_vio_calls * calls, int fh) { |
---|
206 | if ( calls == NULL ) |
---|
207 | return -1; |
---|
208 | |
---|
209 | return roar_vio_open_fh(calls, fh); |
---|
210 | } |
---|
211 | |
---|
212 | int roar_vio_open_socket (struct roar_vio_calls * calls, char * host, int port) { |
---|
213 | int fh; |
---|
214 | |
---|
215 | if ( calls == NULL ) |
---|
216 | return -1; |
---|
217 | |
---|
218 | if ( (fh = roar_socket_connect(host, port)) == -1 ) |
---|
219 | return -1; |
---|
220 | |
---|
221 | return roar_vio_open_fh_socket(calls, fh); |
---|
222 | } |
---|
223 | |
---|
224 | int roar_vio_open_socket_listen(struct roar_vio_calls * calls, int type, char * host, int port) { |
---|
225 | int fh; |
---|
226 | |
---|
227 | if ( calls == NULL ) |
---|
228 | return -1; |
---|
229 | |
---|
230 | if ( (fh = roar_socket_listen(type, host, port)) == -1 ) |
---|
231 | return -1; |
---|
232 | |
---|
233 | return roar_vio_open_fh_socket(calls, fh); |
---|
234 | } |
---|
235 | |
---|
236 | int roar_vio_simple_stream (struct roar_vio_calls * calls, int rate, int channels, int bits, int codec, |
---|
237 | char * server, int dir, char * name) { |
---|
238 | int fh; |
---|
239 | |
---|
240 | if ( calls == NULL ) |
---|
241 | return -1; |
---|
242 | |
---|
243 | if ( (fh = roar_simple_stream(rate, channels, bits, codec, server, dir, name)) == -1 ) |
---|
244 | return -1; |
---|
245 | |
---|
246 | return roar_vio_open_fh_socket(calls, fh); |
---|
247 | } |
---|
248 | |
---|
249 | |
---|
250 | int roar_vio_open_stdio (struct roar_vio_calls * calls, FILE * dst) { |
---|
251 | #ifndef ROAR_WITHOUT_VIO_STDIO |
---|
252 | if ( calls == NULL || dst == NULL ) |
---|
253 | return -1; |
---|
254 | |
---|
255 | memset(calls, 0, sizeof(struct roar_vio_calls)); |
---|
256 | |
---|
257 | calls->read = roar_vio_stdio_read; |
---|
258 | calls->write = roar_vio_stdio_write; |
---|
259 | calls->lseek = roar_vio_stdio_lseek; |
---|
260 | calls->sync = roar_vio_stdio_sync; |
---|
261 | calls->close = roar_vio_stdio_close; |
---|
262 | |
---|
263 | calls->inst = dst; |
---|
264 | |
---|
265 | return 0; |
---|
266 | #else |
---|
267 | return -1; |
---|
268 | #endif |
---|
269 | } |
---|
270 | |
---|
271 | FILE * roar_vio_to_stdio (struct roar_vio_calls * calls, int flags) { |
---|
272 | #ifdef ROAR_HAVE_FOPENCOOKIE |
---|
273 | cookie_io_functions_t foc_funcs; |
---|
274 | #endif |
---|
275 | |
---|
276 | if ( calls == NULL ) |
---|
277 | return NULL; |
---|
278 | |
---|
279 | #if defined(ROAR_HAVE_FOPENCOOKIE) |
---|
280 | memset(&foc_funcs, 0, sizeof(cookie_io_functions_t)); |
---|
281 | |
---|
282 | foc_funcs.close = roar_vio_to_stdio_close; |
---|
283 | foc_funcs.read = roar_vio_to_stdio_read; |
---|
284 | foc_funcs.write = roar_vio_to_stdio_write; |
---|
285 | |
---|
286 | return fopencookie((void*) calls, "rw", foc_funcs); |
---|
287 | #elif defined(ROAR_HAVE_FUNOPEN) |
---|
288 | return funopen((void*) calls, roar_vio_to_stdio_read, roar_vio_to_stdio_write, |
---|
289 | roar_vio_to_stdio_lseek, roar_vio_to_stdio_close); |
---|
290 | #else |
---|
291 | return NULL; |
---|
292 | #endif |
---|
293 | } |
---|
294 | |
---|
295 | #if defined(ROAR_HAVE_FOPENCOOKIE) || defined(ROAR_HAVE_FUNOPEN) |
---|
296 | int roar_vio_to_stdio_close (void *__cookie) { |
---|
297 | return roar_vio_close((struct roar_vio_calls *) __cookie); |
---|
298 | } |
---|
299 | |
---|
300 | #if defined(ROAR_HAVE_FOPENCOOKIE) |
---|
301 | __ssize_t roar_vio_to_stdio_read (void *__cookie, char *__buf, size_t __nbytes) { |
---|
302 | #elif defined(ROAR_HAVE_FUNOPEN) |
---|
303 | int roar_vio_to_stdio_read(void *__cookie, char *__buf, int __nbytes) { |
---|
304 | #endif |
---|
305 | return roar_vio_read((struct roar_vio_calls *) __cookie, __buf, __nbytes); |
---|
306 | } |
---|
307 | |
---|
308 | #if defined(ROAR_HAVE_FOPENCOOKIE) |
---|
309 | __ssize_t roar_vio_to_stdio_write (void *__cookie, __const char *__buf, size_t __n) { |
---|
310 | #elif defined(ROAR_HAVE_FUNOPEN) |
---|
311 | int roar_vio_to_stdio_write(void *__cookie, const char *__buf, int __n) { |
---|
312 | #endif |
---|
313 | return roar_vio_write((struct roar_vio_calls *) __cookie, (char *) __buf, __n); |
---|
314 | } |
---|
315 | |
---|
316 | #if defined(ROAR_HAVE_FOPENCOOKIE) |
---|
317 | int roar_vio_to_stdio_lseek (void *__cookie, _IO_off64_t *__pos, int __w); |
---|
318 | #elif defined(ROAR_HAVE_FUNOPEN) |
---|
319 | fpos_t roar_vio_to_stdio_lseek(void *__cookie, fpos_t __pos, int __w) { |
---|
320 | return roar_vio_lseek((struct roar_vio_calls *) __cookie, __pos, __w); |
---|
321 | } |
---|
322 | #endif |
---|
323 | #endif |
---|
324 | |
---|
325 | // VIOs: |
---|
326 | |
---|
327 | // basic |
---|
328 | ssize_t roar_vio_basic_read (struct roar_vio_calls * vio, void *buf, size_t count) { |
---|
329 | return read(roar_vio_get_fh(vio), buf, count); |
---|
330 | } |
---|
331 | |
---|
332 | ssize_t roar_vio_basic_write(struct roar_vio_calls * vio, void *buf, size_t count) { |
---|
333 | return write(roar_vio_get_fh(vio), buf, count); |
---|
334 | } |
---|
335 | |
---|
336 | off_t roar_vio_basic_lseek(struct roar_vio_calls * vio, off_t offset, int whence) { |
---|
337 | return lseek(roar_vio_get_fh(vio), offset, whence); |
---|
338 | } |
---|
339 | |
---|
340 | int roar_vio_basic_nonblock(struct roar_vio_calls * vio, int state) { |
---|
341 | if ( roar_socket_nonblock(roar_vio_get_fh(vio), state) == -1 ) |
---|
342 | return -1; |
---|
343 | |
---|
344 | if ( state == ROAR_SOCKET_NONBLOCK ) |
---|
345 | return 0; |
---|
346 | |
---|
347 | roar_vio_sync(vio); |
---|
348 | |
---|
349 | return 0; |
---|
350 | } |
---|
351 | |
---|
352 | int roar_vio_basic_sync (struct roar_vio_calls * vio) { |
---|
353 | return ROAR_FDATASYNC(roar_vio_get_fh(vio)); |
---|
354 | } |
---|
355 | |
---|
356 | int roar_vio_basic_close (struct roar_vio_calls * vio) { |
---|
357 | if ( roar_vio_get_fh(vio) != -1 ) |
---|
358 | return close(roar_vio_get_fh(vio)); |
---|
359 | |
---|
360 | return 0; |
---|
361 | } |
---|
362 | |
---|
363 | // null |
---|
364 | ssize_t roar_vio_null_rw (struct roar_vio_calls * vio, void *buf, size_t count) { |
---|
365 | if ( vio == NULL || buf == NULL ) |
---|
366 | return -1; |
---|
367 | |
---|
368 | return 0; |
---|
369 | } |
---|
370 | |
---|
371 | // pass |
---|
372 | int roar_vio_open_pass (struct roar_vio_calls * calls, struct roar_vio_calls * dst) { |
---|
373 | if ( calls == NULL ) |
---|
374 | return -1; |
---|
375 | |
---|
376 | memset((void*)calls, 0, sizeof(struct roar_vio_calls)); |
---|
377 | |
---|
378 | calls->read = roar_vio_pass_read; |
---|
379 | calls->write = roar_vio_pass_write; |
---|
380 | calls->lseek = roar_vio_pass_lseek; |
---|
381 | calls->nonblock = roar_vio_pass_nonblock; |
---|
382 | calls->sync = roar_vio_pass_sync; |
---|
383 | calls->close = roar_vio_pass_close; |
---|
384 | |
---|
385 | calls->inst = dst; |
---|
386 | |
---|
387 | return 0; |
---|
388 | } |
---|
389 | |
---|
390 | ssize_t roar_vio_pass_read (struct roar_vio_calls * vio, void *buf, size_t count) { |
---|
391 | return roar_vio_read((struct roar_vio_calls *) vio->inst, buf, count); |
---|
392 | } |
---|
393 | |
---|
394 | ssize_t roar_vio_pass_write(struct roar_vio_calls * vio, void *buf, size_t count) { |
---|
395 | return roar_vio_write((struct roar_vio_calls *) vio->inst, buf, count); |
---|
396 | } |
---|
397 | |
---|
398 | off_t roar_vio_pass_lseek(struct roar_vio_calls * vio, off_t offset, int whence) { |
---|
399 | return roar_vio_lseek((struct roar_vio_calls *) vio->inst, offset, whence); |
---|
400 | } |
---|
401 | |
---|
402 | int roar_vio_pass_nonblock(struct roar_vio_calls * vio, int state) { |
---|
403 | return roar_vio_nonblock((struct roar_vio_calls *) vio->inst, state); |
---|
404 | } |
---|
405 | |
---|
406 | int roar_vio_pass_sync (struct roar_vio_calls * vio) { |
---|
407 | return roar_vio_sync((struct roar_vio_calls *) vio->inst); |
---|
408 | } |
---|
409 | |
---|
410 | int roar_vio_pass_ctl (struct roar_vio_calls * vio, int cmd, void * data) { |
---|
411 | return roar_vio_ctl((struct roar_vio_calls *) vio->inst, cmd, data); |
---|
412 | } |
---|
413 | |
---|
414 | int roar_vio_pass_close (struct roar_vio_calls * vio) { |
---|
415 | return roar_vio_close((struct roar_vio_calls *) vio->inst); |
---|
416 | } |
---|
417 | |
---|
418 | |
---|
419 | // re |
---|
420 | int roar_vio_open_re (struct roar_vio_calls * calls, struct roar_vio_calls * dst) { |
---|
421 | if ( roar_vio_open_pass(calls, dst) == -1 ) |
---|
422 | return -1; |
---|
423 | |
---|
424 | calls->read = roar_vio_re_read; |
---|
425 | calls->write = roar_vio_re_write; |
---|
426 | calls->lseek = roar_vio_re_lseek; |
---|
427 | |
---|
428 | return 0; |
---|
429 | } |
---|
430 | ssize_t roar_vio_re_read (struct roar_vio_calls * vio, void *buf, size_t count) { |
---|
431 | size_t len = 0; |
---|
432 | ssize_t r = -1; |
---|
433 | |
---|
434 | if ( vio == NULL ) |
---|
435 | return -1; |
---|
436 | |
---|
437 | if ( vio->inst == NULL ) |
---|
438 | return -1; |
---|
439 | |
---|
440 | errno = 0; |
---|
441 | |
---|
442 | while ( (r = roar_vio_read((struct roar_vio_calls *) vio->inst, buf, count)) > 0 ) { |
---|
443 | len += r; |
---|
444 | buf += r; |
---|
445 | count -= r; |
---|
446 | if ( count == 0 ) |
---|
447 | break; |
---|
448 | } |
---|
449 | |
---|
450 | if ( len == 0 && r == -1 ) |
---|
451 | return -1; |
---|
452 | |
---|
453 | return len; |
---|
454 | } |
---|
455 | |
---|
456 | ssize_t roar_vio_re_write(struct roar_vio_calls * vio, void *buf, size_t count) { |
---|
457 | size_t len = 0; |
---|
458 | ssize_t r = -1; |
---|
459 | |
---|
460 | if ( vio == NULL ) |
---|
461 | return -1; |
---|
462 | |
---|
463 | if ( vio->inst == NULL ) |
---|
464 | return -1; |
---|
465 | |
---|
466 | errno = 0; |
---|
467 | |
---|
468 | while ( (r = roar_vio_write((struct roar_vio_calls *) vio->inst, buf, count)) > 0 ) { |
---|
469 | len += r; |
---|
470 | buf += r; |
---|
471 | count -= r; |
---|
472 | if ( count == 0 ) |
---|
473 | break; |
---|
474 | } |
---|
475 | |
---|
476 | if ( len == 0 && r == -1 ) |
---|
477 | return -1; |
---|
478 | |
---|
479 | return len; |
---|
480 | } |
---|
481 | |
---|
482 | // TODO: we should do a some more intelgent thing here. |
---|
483 | off_t roar_vio_re_lseek(struct roar_vio_calls * vio, off_t offset, int whence) { |
---|
484 | return roar_vio_lseek((struct roar_vio_calls *) vio->inst, offset, whence); |
---|
485 | } |
---|
486 | |
---|
487 | // stdio: |
---|
488 | #ifndef ROAR_WITHOUT_VIO_STDIO |
---|
489 | ssize_t roar_vio_stdio_read (struct roar_vio_calls * vio, void *buf, size_t count) { |
---|
490 | return fread(buf, 1, count, (FILE*)(vio->inst)); |
---|
491 | } |
---|
492 | |
---|
493 | ssize_t roar_vio_stdio_write (struct roar_vio_calls * vio, void *buf, size_t count) { |
---|
494 | return fwrite(buf, 1, count, (FILE*)(vio->inst)); |
---|
495 | } |
---|
496 | |
---|
497 | off_t roar_vio_stdio_lseek (struct roar_vio_calls * vio, off_t offset, int whence) { |
---|
498 | if ( fseek((FILE*)(vio->inst), offset, whence) == -1 ) |
---|
499 | return -1; |
---|
500 | |
---|
501 | return ftell((FILE*)(vio->inst)); |
---|
502 | } |
---|
503 | |
---|
504 | int roar_vio_stdio_sync (struct roar_vio_calls * vio) { |
---|
505 | return fflush((FILE*)(vio->inst)); |
---|
506 | } |
---|
507 | |
---|
508 | int roar_vio_stdio_close (struct roar_vio_calls * vio) { |
---|
509 | return fclose((FILE*)(vio->inst)); |
---|
510 | } |
---|
511 | #endif |
---|
512 | |
---|
513 | //ll |
---|