source: roaraudio/libroar/vio_stream.c @ 6036:3068a825a29e

Last change on this file since 6036:3068a825a29e was 6036:3068a825a29e, checked in by phi, 9 years ago

killed some compiler warnings

File size: 13.3 KB
Line 
1//vio_stream.c:
2
3/*
4 *      Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2010-2014
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
38static ssize_t _vio_stream_read    (struct roar_vio_calls * vio, void *buf, size_t count) {
39 return roar_vio_read(roar_get_connection_vio2(vio->inst), buf, count);
40}
41
42static ssize_t _vio_stream_write   (struct roar_vio_calls * vio, void *buf, size_t count) {
43 return roar_vio_write(roar_get_connection_vio2(vio->inst), buf, count);
44}
45
46static roar_off_t   _vio_stream_lseek   (struct roar_vio_calls * vio, roar_off_t offset, int whence) {
47 return roar_vio_lseek(roar_get_connection_vio2(vio->inst), offset, whence);
48}
49static int     _vio_stream_sync    (struct roar_vio_calls * vio) {
50 return roar_vio_sync(roar_get_connection_vio2(vio->inst));
51}
52static int     _vio_stream_ctl     (struct roar_vio_calls * vio, roar_vio_ctl_t cmd, void * data) {
53 if (vio == NULL) {
54  roar_err_set(ROAR_ERROR_FAULT);
55  return -1;
56 }
57
58 if (cmd == -1) {
59  roar_err_set(ROAR_ERROR_INVAL);
60  return -1;
61 }
62
63 switch (cmd) {
64  case ROAR_VIO_CTL_GET_NAME:
65    if ( data == NULL ) {
66     roar_err_set(ROAR_ERROR_FAULT);
67     return -1;
68    }
69
70    *(char**)data = "stream";
71    return 0;
72   break;
73  case ROAR_VIO_CTL_GET_NEXT:
74    *(struct roar_vio_calls **)data = roar_get_connection_vio2(vio->inst);
75    return 0;
76   break;
77  case ROAR_VIO_CTL_SET_NEXT:
78    roar_err_set(ROAR_ERROR_NOTSUP);
79    return -1;
80   break;
81  case ROAR_VIO_CTL_NONBLOCK:
82    return roar_vio_ctl(roar_get_connection_vio2(vio->inst), ROAR_VIO_CTL_NONBLOCK, data);
83   break;
84 }
85
86 return roar_vio_ctl(roar_get_connection_vio2(vio->inst), cmd, data);
87}
88
89static int     _vio_stream_close   (struct roar_vio_calls * vio) {
90 roar_vio_close(roar_get_connection_vio2(vio->inst));
91 roar_mm_free(vio->inst);
92
93 return 0;
94}
95
96int     roar_vio_simple_stream (struct roar_vio_calls * calls,
97                                uint32_t rate, uint32_t channels, uint32_t bits, uint32_t codec,
98                                const char * server, int dir, const char * name, int mixer) {
99 struct roar_connection * con = NULL;
100 struct roar_stream       stream;
101 int err;
102
103 if ( calls == NULL ) {
104  roar_err_set(ROAR_ERROR_FAULT);
105  return -1;
106 }
107
108 if ( roar_stream_new(&stream, rate, channels, bits, codec) == -1 )
109  return -1;
110
111 con = roar_mm_malloc(sizeof(struct roar_connection));
112 if ( con == NULL )
113  return -1;
114
115 memset(con, 0, sizeof(struct roar_connection));
116
117 if ( roar_simple_connect(con, server, name) == -1 ) {
118  roar_mm_free_noerror(con);
119  return -1;
120 }
121
122 if ( roar_stream_connect(con, &stream, dir, mixer) == -1 ) {
123  err = roar_error;
124  roar_disconnect(con);
125  roar_mm_free(con);
126  roar_error = err;
127  return -1;
128 }
129
130 if ( roar_stream_exec(con, &stream) == -1 ) {
131  err = roar_error;
132  roar_disconnect(con);
133  roar_mm_free(con);
134  roar_error = err;
135  return -1;
136 }
137
138 roar_vio_clear_calls(calls);
139
140 calls->inst       = con;
141 calls->read       = _vio_stream_read;
142 calls->write      = _vio_stream_write;
143 calls->lseek      = _vio_stream_lseek;
144 calls->sync       = _vio_stream_sync;
145 calls->ctl        = _vio_stream_ctl;
146 calls->close      = _vio_stream_close;
147
148 if ( dir == ROAR_DIR_PLAY ) {
149  roar_vio_shutdown(calls, SHUT_RD);
150 } else if ( dir == ROAR_DIR_MONITOR || dir == ROAR_DIR_RECORD ) {
151  roar_vio_shutdown(calls, SHUT_WR);
152 }
153
154 return 0;
155}
156
157static inline int _roar_simple_new_stream_obj_try_select (struct roar_connection * con, struct roar_stream * s, uint32_t rate, uint32_t channels, uint32_t bits, uint32_t codec, int dir, int mixer, struct roar_sockname * sockname, int * fh, int * can_go_on) {
158#ifdef ROAR_HAVE_SELECT
159 int confh;
160 fd_set fds;
161 struct timeval timeout = {10, 0};
162 struct roar_message    mes;
163 int listen;
164 int    port = 0;
165 char file[80] = "";
166 char socketaddr[80];
167 ssize_t socketaddr_len = -1;
168#if defined(ROAR_HAVE_IPV4) || defined(ROAR_HAVE_LIBDNET)
169 int    opt  = 1;
170#endif
171#ifdef ROAR_HAVE_LIBDNET
172 static int count = 0;
173 struct dn_naddr      *binaddr;
174#endif
175#ifdef ROAR_HAVE_IPV4
176 struct sockaddr_in   socket_addr;
177 socklen_t            len            = sizeof(struct sockaddr_in);
178#else
179 struct sockaddr      socket_addr;
180 socklen_t            len            = sizeof(struct sockaddr);
181#endif
182
183 memset(&mes, 0, sizeof(mes));
184 memset(&socket_addr, 0, sizeof(socket_addr));
185
186 *can_go_on = 0;
187
188 switch (sockname->type) {
189#ifdef ROAR_HAVE_LIBDNET
190  case ROAR_SOCKET_TYPE_DECNET:
191    if ( roar_socket_get_local_nodename() != NULL && (binaddr = getnodeadd()) != NULL ) {
192     snprintf(socketaddr+3, sizeof(socketaddr)-3, "roar$TMP%04x%02x", getpid(), count++);
193     snprintf(file, sizeof(file), "%s::%s", roar_socket_get_local_nodename(), socketaddr+3);
194     memcpy(socketaddr, binaddr->a_addr, 2);
195     socketaddr[2] = 0; // object 0.
196     socketaddr_len = 3 + roar_mm_strlen(socketaddr+3);
197    } else {
198     return -1;
199    }
200   break;
201#endif
202#ifdef ROAR_HAVE_IPV4
203  case ROAR_SOCKET_TYPE_TCP:
204    strncpy(file, sockname->addr, sizeof(file) - 1);
205    roar_err_set(ROAR_ERROR_NONE);
206    if ( inet_aton(sockname->addr, &socket_addr.sin_addr) == 0 ) {
207     roar_err_update();
208     return -1;
209    }
210    memcpy(socketaddr, &socket_addr.sin_addr.s_addr, 4);
211    socketaddr_len = 6;
212   break;
213#endif
214  default:
215    roar_err_set(ROAR_ERROR_AFNOTSUP);
216    return -1;
217   break;
218 }
219
220 roar_libroar_nowarn();
221 if ( (listen = roar_socket_listen(sockname->type, file, port)) == -1 ) {
222  roar_libroar_warn();
223  return -1;
224 }
225 roar_libroar_warn();
226
227 switch (sockname->type) {
228#ifdef ROAR_HAVE_IPV4
229  case ROAR_SOCKET_TYPE_TCP:
230    setsockopt(listen, SOL_SOCKET, SO_REUSEADDR, (void*)&opt, sizeof(int));
231
232    len = sizeof(struct sockaddr_in);
233    if ( getsockname(listen, (struct sockaddr *)&socket_addr, &len) == -1 ) {
234     return -1;
235    }
236    ((uint16_t*)socketaddr)[3] = socket_addr.sin_port;
237    port = ROAR_NET2HOST16(socket_addr.sin_port);
238    ROAR_DBG("roar_simple_new_stream_obj(*): port=%i", port);
239   break;
240#endif
241#ifdef ROAR_HAVE_LIBDNET
242  case ROAR_SOCKET_TYPE_DECNET:
243    setsockopt(listen, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(int));
244   break;
245#endif
246 }
247
248 if ( roar_stream_connect_to_advanced(con, s, 0, 1, 0, sockname->type, socketaddr_len, socketaddr, ROAR_PROTO_NONE, -1, NULL, 0, NULL) == -1 ) {
249  close(listen);
250  *can_go_on = 1;
251  return -1;
252 } else {
253
254  FD_ZERO(&fds);
255  FD_SET(listen, &fds);
256
257  confh = roar_get_connection_fh(con);
258
259  if ( confh != -1 ) {
260   FD_SET(confh, &fds);
261  }
262
263  if ( select((confh > listen ? confh : listen) + 1, &fds, NULL, NULL, &timeout) < 1 ) {
264   close(listen);
265
266   // we don't need to check the content as we know it failed...
267   if ( roar_recv_message(con, &mes, NULL) == -1 )
268    return -1;
269
270   if ( roar_kick(con, ROAR_OT_STREAM, s->id) == -1 )
271    return -1;
272
273   *can_go_on = 1;
274   return -1;
275  }
276
277  if ( FD_ISSET(listen, &fds) ) {
278   if ( (*fh = accept(listen, NULL, NULL)) != -1 ) {
279    /* TODO: FIXME: XXX: errr, do we need any error handling here? */
280   }
281
282   if ( roar_recv_message(con, &mes, NULL) == -1 ) {
283    if ( *fh != -1 )
284     close(*fh);
285    *fh = -1;
286   } else if ( mes.cmd != ROAR_CMD_OK ) {
287    if ( *fh != -1 )
288     close(*fh);
289    *fh = -1;
290   }
291  } else {
292   // we don't need to check the content as we know it failed...
293   if ( roar_recv_message(con, &mes, NULL) == -1 ) {
294    close(listen);
295    return -1;
296   }
297
298   if ( mes.cmd != ROAR_CMD_OK ) {
299    close(listen);
300    if ( roar_kick(con, ROAR_OT_STREAM, s->id) == -1 )
301     return -1;
302
303    *can_go_on = 1;
304    return -1;
305   } else { // seems like we have a positive reply. So we retry the listen socket:
306    FD_ZERO(&fds);
307    FD_SET(listen, &fds);
308    timeout.tv_sec = 0;
309    timeout.tv_usec = 128000L;
310    *fh = -1;
311    if ( select(listen + 1, &fds, NULL, NULL, &timeout) > 0 ) {
312     if ( (*fh = accept(listen, NULL, NULL)) == -1 ) {
313      close(listen);
314      if ( roar_kick(con, ROAR_OT_STREAM, s->id) == -1 )
315       return -1;
316
317      *can_go_on = 1;
318      return -1;
319     }
320    }
321   }
322  }
323  close(listen);
324  return 0;
325 }
326
327#else
328 roar_err_set(ROAR_ERROR_NOSYS);
329 return -1;
330#endif
331}
332
333static int _roar_simple_new_stream_obj (struct roar_connection * con, struct roar_stream * s, uint32_t rate, uint32_t channels, uint32_t bits, uint32_t codec, int dir, int mixer) {
334 struct roar_libroar_config * config = roar_libroar_get_config();
335 int fh = -1;
336#ifdef ROAR_HAVE_UNIX
337 int socks[2]; // for socketpair()
338#endif
339 struct roar_sockname sockname;
340 int can_go_on = 0;
341
342 ROAR_DBG("_roar_simple_new_stream_obj(con=%p, s=%p, rate=%i, channels=%i, bits=%i, codec=%i, dir=%i, mixer=%i) = ?", con, s, (int)rate, (int)channels, (int)bits, (int)codec, dir, mixer);
343
344 if ( config != NULL ) {
345  if ( config->workaround.workarounds & ROAR_LIBROAR_CONFIG_WAS_USE_EXECED ) {
346   return roar_simple_new_stream_attachexeced_obj(con, s, rate, channels, bits, codec, dir, mixer);
347  }
348 }
349
350 ROAR_DBG("_roar_simple_new_stream_obj(con=%p, s=%p, rate=%i, channels=%i, bits=%i, codec=%i, dir=%i, mixer=%i) = ?", con, s, (int)rate, (int)channels, (int)bits, (int)codec, dir, mixer);
351
352 roar_libroar_nowarn();
353 if ( roar_vio_ctl(roar_get_connection_vio2(con), ROAR_VIO_CTL_GET_SOCKNAME, &sockname) == -1 ) {
354  roar_libroar_warn();
355#ifdef ROAR_OS_OPENBSD
356  sockname.type = ROAR_SOCKET_TYPE_UNIX;
357#else
358  ROAR_DBG("_roar_simple_new_stream_obj(con=%p, s=%p, rate=%i, channels=%i, bits=%i, codec=%i, dir=%i, mixer=%i) = -1", con, s, (int)rate, (int)channels, (int)bits, (int)codec, dir, mixer);
359
360  return -1;
361#endif
362 }
363 roar_libroar_warn();
364
365 ROAR_DBG("_roar_simple_new_stream_obj(con=%p, s=%p, rate=%i, channels=%i, bits=%i, codec=%i, dir=%i, mixer=%i) = ?", con, s, (int)rate, (int)channels, (int)bits, (int)codec, dir, mixer);
366
367 if ( roar_stream_new(s, rate, channels, bits, codec) == -1 ) {
368  return -1;
369 }
370
371 if ( roar_stream_connect(con, s, dir, mixer) == -1 ) {
372  return -1;
373 }
374
375 if ( sockname.type != ROAR_SOCKET_TYPE_UNIX ) {
376  do {
377   if ( _roar_simple_new_stream_obj_try_select(con, s,
378                                               rate, channels, bits, codec, dir, mixer,
379                                               &sockname, &fh, &can_go_on) != -1 )
380    break;
381   if ( !can_go_on )
382    return -1;
383
384   return roar_simple_new_stream_attachexeced_obj(con, s, rate, channels, bits, codec, dir, mixer);
385  } while (0);
386 } else { // this is sockname.type == ROAR_SOCKET_TYPE_UNIX
387#ifdef ROAR_HAVE_UNIX
388  if ( socketpair(AF_UNIX, SOCK_STREAM, 0, socks) == -1 ) {
389   roar_kick(con, ROAR_OT_STREAM, s->id); // we do not need to check for errors
390                                          // as we return -1 in both whys
391   return -1;
392  }
393
394  if ( roar_stream_passfh(con, s, socks[0]) == -1 ) {
395   roar_kick(con, ROAR_OT_STREAM, s->id); // we do not need to check for errors
396                                          // as we return -1 anyway.
397   close(socks[0]);
398   close(socks[1]);
399
400   return roar_simple_new_stream_attachexeced_obj(con, s, rate, channels, bits, codec, dir, mixer);
401  }
402
403  close(socks[0]);
404  fh = socks[1];
405#else
406  roar_kick(con, ROAR_OT_STREAM, s->id);
407  return -1;
408#endif
409 }
410
411 if ( fh != -1 ) {
412  if ( dir == ROAR_DIR_PLAY ) {
413   (void)ROAR_SHUTDOWN(fh, SHUT_RD);
414  } else if ( dir == ROAR_DIR_MONITOR || dir == ROAR_DIR_RECORD ) {
415   (void)ROAR_SHUTDOWN(fh, SHUT_WR);
416  }
417 }
418
419 s->fh = fh;
420
421 ROAR_DBG("_roar_simple_new_stream_obj(con=%p, s=%p, rate=%i, channels=%i, bits=%i, codec=%i, dir=%i, mixer=%i) = %i", con, s, (int)rate, (int)channels, (int)bits, (int)codec, dir, mixer, fh);
422 return fh;
423}
424
425int     roar_vio_simple_new_stream_obj (struct roar_vio_calls * calls,
426                                        struct roar_connection * con,
427                                        struct roar_stream * s,
428                                        uint32_t rate, uint32_t channels, uint32_t bits, uint32_t codec,
429                                        int dir, int mixer) {
430 struct roar_stream stream;
431 int fh;
432
433 ROAR_DBG("roar_vio_simple_new_stream_obj(*) = ?");
434
435 if ( calls == NULL ) {
436  roar_err_set(ROAR_ERROR_FAULT);
437  return -1;
438 }
439
440 if ( s == NULL )
441  s = &stream;
442
443 if ( (fh = _roar_simple_new_stream_obj(con, s, rate, channels, bits, codec, dir, mixer)) == -1 ) {
444  ROAR_DBG("roar_vio_simple_new_stream_obj(*) = -1");
445  return -1;
446 }
447
448 ROAR_DBG("roar_vio_simple_new_stream_obj(*): fh=%i", fh);
449
450 return roar_vio_open_fh_socket(calls, fh);
451}
452
453//ll
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