source: roaraudio/libroar/vio_stream.c @ 6026:d51b782b77c5

Last change on this file since 6026:d51b782b77c5 was 6026:d51b782b77c5, checked in by phi, 10 years ago

wrote roar_stream_connect_to_advanced() that combines roar_stream_connect_to() and roar_stream_connect_to_ask() in peaparation for v1 CON_STREAM messages and make use of it

File size: 12.8 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 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) {
158 struct roar_libroar_config * config = roar_libroar_get_config();
159 char file[80] = "";
160 int fh = -1, listen = -1;
161 static int count = 0;
162 int    port = 0;
163#if defined(ROAR_HAVE_IPV4) || defined(ROAR_HAVE_LIBDNET)
164 int    opt  = 1;
165#endif
166#ifdef ROAR_HAVE_LIBDNET
167 struct dn_naddr      *binaddr;
168#endif
169#ifdef ROAR_HAVE_IPV4
170 struct sockaddr_in   socket_addr;
171 socklen_t            len            = sizeof(struct sockaddr_in);
172#else
173 struct sockaddr      socket_addr;
174 socklen_t            len            = sizeof(struct sockaddr);
175#endif
176#ifdef ROAR_HAVE_SELECT
177 int confh;
178 fd_set fds;
179 struct timeval timeout = {10, 0};
180 struct roar_message    mes;
181#endif
182#ifdef ROAR_HAVE_UNIX
183 int socks[2]; // for socketpair()
184#endif
185 struct roar_sockname sockname;
186 char socketaddr[80];
187 ssize_t socketaddr_len = -1;
188
189 // make valgrind happy
190 memset(&socket_addr, 0, sizeof(socket_addr));
191#ifdef ROAR_HAVE_SELECT
192 memset(&mes,         0, sizeof(mes));
193#endif
194
195 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);
196
197 if ( config != NULL ) {
198  if ( config->workaround.workarounds & ROAR_LIBROAR_CONFIG_WAS_USE_EXECED ) {
199   return roar_simple_new_stream_attachexeced_obj(con, s, rate, channels, bits, codec, dir, mixer);
200  }
201 }
202
203 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);
204
205 roar_libroar_nowarn();
206 if ( roar_vio_ctl(roar_get_connection_vio2(con), ROAR_VIO_CTL_GET_SOCKNAME, &sockname) == -1 ) {
207  roar_libroar_warn();
208#ifdef ROAR_OS_OPENBSD
209  sockname.type = ROAR_SOCKET_TYPE_UNIX;
210#else
211  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);
212
213  return -1;
214#endif
215 }
216 roar_libroar_warn();
217
218 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);
219
220 if ( sockname.type == ROAR_SOCKET_TYPE_DECNET ) {
221#ifdef ROAR_HAVE_LIBDNET
222  if ( roar_socket_get_local_nodename() != NULL && (binaddr = getnodeadd()) != NULL ) {
223   snprintf(socketaddr+3, sizeof(socketaddr)-3, "roar$TMP%04x%02x", getpid(), count++);
224   snprintf(file, sizeof(file), "%s::%s", roar_socket_get_local_nodename(), socketaddr+3);
225   memcpy(socketaddr, binaddr->a_addr, 2);
226   socketaddr[2] = 0; // object 0.
227   socketaddr_len = 3 + roar_mm_strlen(socketaddr+3);
228  } else {
229   return -1;
230  }
231#else
232  roar_err_set(ROAR_ERROR_NOSYS);
233  return -1;
234#endif
235#ifdef ROAR_HAVE_IPV4
236 } else {
237  strncpy(file, sockname.addr, sizeof(file) - 1);
238  roar_err_set(ROAR_ERROR_NONE);
239  if ( inet_aton(sockname.addr, &socket_addr.sin_addr) == 0 ) {
240   roar_err_update();
241   return -1;
242  }
243  memcpy(socketaddr, &socket_addr.sin_addr.s_addr, 4);
244  socketaddr_len = 6;
245#endif
246 }
247
248 if ( sockname.type != ROAR_SOCKET_TYPE_UNIX ) {
249  roar_libroar_nowarn();
250  if ( (listen = roar_socket_listen(sockname.type, file, port)) == -1 ) {
251   roar_libroar_warn();
252   return -1;
253  }
254  roar_libroar_warn();
255 }
256
257 if ( sockname.type == ROAR_SOCKET_TYPE_INET ) {
258#ifdef ROAR_HAVE_IPV4
259  setsockopt(listen, SOL_SOCKET, SO_REUSEADDR, (void*)&opt, sizeof(int));
260
261  len = sizeof(struct sockaddr_in);
262  if ( getsockname(listen, (struct sockaddr *)&socket_addr, &len) == -1 ) {
263   return -1;
264  }
265  ((uint16_t*)socketaddr)[3] = socket_addr.sin_port;
266  port = ROAR_NET2HOST16(socket_addr.sin_port);
267  ROAR_DBG("roar_simple_new_stream_obj(*): port=%i", port);
268#else
269  return -1;
270#endif
271 } else if ( sockname.type == ROAR_SOCKET_TYPE_DECNET ) {
272#ifdef ROAR_HAVE_LIBDNET
273  setsockopt(listen, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(int));
274#else
275  return -1;
276#endif
277 }
278
279 if ( roar_stream_new(s, rate, channels, bits, codec) == -1 ) {
280  return -1;
281 }
282
283 if ( roar_stream_connect(con, s, dir, mixer) == -1 ) {
284  return -1;
285 }
286
287 if ( sockname.type != ROAR_SOCKET_TYPE_UNIX ) {
288#ifdef ROAR_HAVE_SELECT
289  if ( roar_stream_connect_to_advanced(con, s, 0, 1, 0, sockname.type, socketaddr_len, socketaddr, ROAR_PROTO_NONE, -1, NULL, 0, NULL) != -1 ) {
290
291   FD_ZERO(&fds);
292   FD_SET(listen, &fds);
293
294   confh = roar_get_connection_fh(con);
295
296   if ( confh != -1 ) {
297    FD_SET(confh, &fds);
298   }
299
300   if ( select((confh > listen ? confh : listen) + 1, &fds, NULL, NULL, &timeout) < 1 ) {
301    close(listen);
302
303    // we don't need to check the content as we know it failed...
304    if ( roar_recv_message(con, &mes, NULL) == -1 )
305     return -1;
306
307    if ( roar_kick(con, ROAR_OT_STREAM, s->id) == -1 )
308     return -1;
309
310    return roar_simple_new_stream_attachexeced_obj(con, s, rate, channels, bits, codec, dir, mixer);
311   }
312
313   if ( FD_ISSET(listen, &fds) ) {
314    if ( (fh = accept(listen, NULL, NULL)) != -1 ) {
315     /* TODO: FIXME: XXX: errr, do we need any error handling here? */
316    }
317
318    if ( roar_recv_message(con, &mes, NULL) == -1 ) {
319     if ( fh != -1 )
320      close(fh);
321     fh = -1;
322    } else if ( mes.cmd != ROAR_CMD_OK ) {
323     if ( fh != -1 )
324      close(fh);
325     fh = -1;
326    }
327   } else {
328    // we don't need to check the content as we know it failed...
329    if ( roar_recv_message(con, &mes, NULL) == -1 ) {
330     close(listen);
331     return -1;
332    }
333
334    if ( mes.cmd != ROAR_CMD_OK ) {
335     close(listen);
336     if ( roar_kick(con, ROAR_OT_STREAM, s->id) == -1 )
337      return -1;
338
339     return roar_simple_new_stream_attachexeced_obj(con, s, rate, channels, bits, codec, dir, mixer);
340    } else { // seems like we have a positive reply. So we retry the listen socket:
341     FD_ZERO(&fds);
342     FD_SET(listen, &fds);
343     timeout.tv_sec = 0;
344     timeout.tv_usec = 128000L;
345     fh = -1;
346     if ( select(listen + 1, &fds, NULL, NULL, &timeout) > 0 ) {
347      if ( (fh = accept(listen, NULL, NULL)) == -1 ) {
348       close(listen);
349       if ( roar_kick(con, ROAR_OT_STREAM, s->id) == -1 )
350        return -1;
351
352       return roar_simple_new_stream_attachexeced_obj(con, s, rate, channels, bits, codec, dir, mixer);
353      }
354     }
355    }
356   }
357  }
358
359  close(listen);
360#else
361  roar_err_set(ROAR_ERROR_NOSYS);
362  return -1;
363#endif
364 } else { // this is sockname.type == ROAR_SOCKET_TYPE_UNIX
365#ifdef ROAR_HAVE_UNIX
366  if ( socketpair(AF_UNIX, SOCK_STREAM, 0, socks) == -1 ) {
367   roar_kick(con, ROAR_OT_STREAM, s->id); // we do not need to check for errors
368                                          // as we return -1 in both whys
369   return -1;
370  }
371
372  if ( roar_stream_passfh(con, s, socks[0]) == -1 ) {
373   roar_kick(con, ROAR_OT_STREAM, s->id); // we do not need to check for errors
374                                          // as we return -1 anyway.
375   close(socks[0]);
376   close(socks[1]);
377
378   return roar_simple_new_stream_attachexeced_obj(con, s, rate, channels, bits, codec, dir, mixer);
379  }
380
381  close(socks[0]);
382  fh = socks[1];
383#else
384  roar_kick(con, ROAR_OT_STREAM, s->id);
385  return -1;
386#endif
387 }
388
389 if ( fh != -1 ) {
390  if ( dir == ROAR_DIR_PLAY ) {
391   (void)ROAR_SHUTDOWN(fh, SHUT_RD);
392  } else if ( dir == ROAR_DIR_MONITOR || dir == ROAR_DIR_RECORD ) {
393   (void)ROAR_SHUTDOWN(fh, SHUT_WR);
394  }
395 }
396
397 s->fh = fh;
398
399 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);
400 return fh;
401}
402
403int     roar_vio_simple_new_stream_obj (struct roar_vio_calls * calls,
404                                        struct roar_connection * con,
405                                        struct roar_stream * s,
406                                        uint32_t rate, uint32_t channels, uint32_t bits, uint32_t codec,
407                                        int dir, int mixer) {
408 struct roar_stream stream;
409 int fh;
410
411 ROAR_DBG("roar_vio_simple_new_stream_obj(*) = ?");
412
413 if ( calls == NULL ) {
414  roar_err_set(ROAR_ERROR_FAULT);
415  return -1;
416 }
417
418 if ( s == NULL )
419  s = &stream;
420
421 if ( (fh = _roar_simple_new_stream_obj(con, s, rate, channels, bits, codec, dir, mixer)) == -1 ) {
422  ROAR_DBG("roar_vio_simple_new_stream_obj(*) = -1");
423  return -1;
424 }
425
426 ROAR_DBG("roar_vio_simple_new_stream_obj(*): fh=%i", fh);
427
428 return roar_vio_open_fh_socket(calls, fh);
429}
430
431//ll
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