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23e7e3ae JVH |
1 | /** |
2 | * Copyright (C) 2011-2012 Juho Vähä-Herttua | |
3 | * | |
4 | * This library is free software; you can redistribute it and/or | |
5 | * modify it under the terms of the GNU Lesser General Public | |
6 | * License as published by the Free Software Foundation; either | |
7 | * version 2.1 of the License, or (at your option) any later version. | |
8 | * | |
9 | * This library is distributed in the hope that it will be useful, | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
12 | * Lesser General Public License for more details. | |
13 | */ | |
14 | ||
2340bcd3 JVH |
15 | #include <stdlib.h> |
16 | #include <stdio.h> | |
17 | #include <string.h> | |
18 | #include <assert.h> | |
19 | #include <errno.h> | |
20 | ||
21 | #include "raop_rtp.h" | |
22 | #include "raop.h" | |
23 | #include "raop_buffer.h" | |
24 | #include "netutils.h" | |
ba0970e1 | 25 | #include "utils.h" |
2340bcd3 JVH |
26 | #include "compat.h" |
27 | #include "logger.h" | |
28 | ||
29 | #define NO_FLUSH (-42) | |
30 | ||
31 | struct raop_rtp_s { | |
32 | logger_t *logger; | |
33 | raop_callbacks_t callbacks; | |
34 | ||
ba0970e1 | 35 | /* Buffer to handle all resends */ |
2340bcd3 JVH |
36 | raop_buffer_t *buffer; |
37 | ||
ba0970e1 JVH |
38 | /* Remote address as sockaddr */ |
39 | struct sockaddr_storage remote_saddr; | |
40 | socklen_t remote_saddr_len; | |
41 | ||
2340bcd3 JVH |
42 | /* These variables only edited mutex locked */ |
43 | int running; | |
44 | int joined; | |
45 | float volume; | |
46 | int flush; | |
47 | thread_handle_t thread; | |
48 | mutex_handle_t run_mutex; | |
49 | ||
50 | /* Remote control and timing ports */ | |
51 | unsigned short control_rport; | |
52 | unsigned short timing_rport; | |
53 | ||
54 | /* Sockets for control, timing and data */ | |
55 | int csock, tsock, dsock; | |
56 | ||
57 | /* Local control, timing and data ports */ | |
58 | unsigned short control_lport; | |
59 | unsigned short timing_lport; | |
60 | unsigned short data_lport; | |
61 | ||
ba0970e1 | 62 | /* Initialized after the first control packet */ |
2340bcd3 JVH |
63 | struct sockaddr_storage control_saddr; |
64 | socklen_t control_saddr_len; | |
65 | unsigned short control_seqnum; | |
66 | }; | |
67 | ||
ba0970e1 JVH |
68 | static int |
69 | raop_rtp_parse_remote(raop_rtp_t *raop_rtp, const char *remote) | |
70 | { | |
71 | char *original; | |
72 | char *current; | |
73 | char *tmpstr; | |
74 | int family; | |
75 | int ret; | |
76 | ||
77 | assert(raop_rtp); | |
78 | ||
79 | current = original = strdup(remote); | |
80 | if (!original) { | |
81 | return -1; | |
82 | } | |
83 | tmpstr = utils_strsep(¤t, " "); | |
84 | if (strcmp(tmpstr, "IN")) { | |
85 | free(original); | |
86 | return -1; | |
87 | } | |
88 | tmpstr = utils_strsep(¤t, " "); | |
89 | if (!strcmp(tmpstr, "IP4") && current) { | |
90 | family = AF_INET; | |
91 | } else if (!strcmp(tmpstr, "IP6") && current) { | |
92 | family = AF_INET6; | |
93 | } else { | |
94 | free(original); | |
95 | return -1; | |
96 | } | |
97 | ret = netutils_parse_address(family, current, | |
98 | &raop_rtp->remote_saddr, | |
99 | sizeof(raop_rtp->remote_saddr)); | |
100 | if (ret < 0) { | |
101 | free(original); | |
102 | return -1; | |
103 | } | |
104 | raop_rtp->remote_saddr_len = ret; | |
105 | free(original); | |
106 | return 0; | |
107 | } | |
108 | ||
2340bcd3 | 109 | raop_rtp_t * |
ba0970e1 JVH |
110 | raop_rtp_init(logger_t *logger, raop_callbacks_t *callbacks, const char *remote, |
111 | const char *fmtp, const unsigned char *aeskey, const unsigned char *aesiv) | |
2340bcd3 JVH |
112 | { |
113 | raop_rtp_t *raop_rtp; | |
114 | ||
115 | assert(logger); | |
ba0970e1 JVH |
116 | assert(callbacks); |
117 | assert(remote); | |
118 | assert(fmtp); | |
2340bcd3 JVH |
119 | |
120 | raop_rtp = calloc(1, sizeof(raop_rtp_t)); | |
121 | if (!raop_rtp) { | |
122 | return NULL; | |
123 | } | |
124 | raop_rtp->logger = logger; | |
125 | memcpy(&raop_rtp->callbacks, callbacks, sizeof(raop_callbacks_t)); | |
126 | raop_rtp->buffer = raop_buffer_init(fmtp, aeskey, aesiv); | |
127 | if (!raop_rtp->buffer) { | |
128 | free(raop_rtp); | |
129 | return NULL; | |
130 | } | |
ba0970e1 JVH |
131 | if (raop_rtp_parse_remote(raop_rtp, remote) < 0) { |
132 | free(raop_rtp); | |
133 | return NULL; | |
134 | } | |
2340bcd3 JVH |
135 | |
136 | raop_rtp->running = 0; | |
137 | raop_rtp->joined = 1; | |
138 | raop_rtp->flush = NO_FLUSH; | |
139 | MUTEX_CREATE(raop_rtp->run_mutex); | |
140 | ||
141 | return raop_rtp; | |
142 | } | |
143 | ||
144 | void | |
145 | raop_rtp_destroy(raop_rtp_t *raop_rtp) | |
146 | { | |
147 | if (raop_rtp) { | |
148 | raop_rtp_stop(raop_rtp); | |
149 | ||
150 | MUTEX_DESTROY(raop_rtp->run_mutex); | |
151 | raop_buffer_destroy(raop_rtp->buffer); | |
152 | free(raop_rtp); | |
153 | } | |
154 | } | |
155 | ||
156 | static int | |
157 | raop_rtp_init_sockets(raop_rtp_t *raop_rtp, int use_ipv6, int use_udp) | |
158 | { | |
159 | int csock = -1, tsock = -1, dsock = -1; | |
160 | unsigned short cport = 0, tport = 0, dport = 0; | |
161 | ||
162 | assert(raop_rtp); | |
163 | ||
164 | if (use_udp) { | |
165 | csock = netutils_init_socket(&cport, use_ipv6, use_udp); | |
166 | tsock = netutils_init_socket(&tport, use_ipv6, use_udp); | |
167 | if (csock == -1 || tsock == -1) { | |
168 | goto sockets_cleanup; | |
169 | } | |
170 | } | |
171 | dsock = netutils_init_socket(&dport, use_ipv6, use_udp); | |
172 | if (dsock == -1) { | |
173 | goto sockets_cleanup; | |
174 | } | |
175 | ||
176 | /* Listen to the data socket if using TCP */ | |
177 | if (!use_udp) { | |
178 | if (listen(dsock, 1) < 0) | |
179 | goto sockets_cleanup; | |
180 | } | |
181 | ||
182 | /* Set socket descriptors */ | |
183 | raop_rtp->csock = csock; | |
184 | raop_rtp->tsock = tsock; | |
185 | raop_rtp->dsock = dsock; | |
186 | ||
187 | /* Set port values */ | |
188 | raop_rtp->control_lport = cport; | |
189 | raop_rtp->timing_lport = tport; | |
190 | raop_rtp->data_lport = dport; | |
191 | return 0; | |
192 | ||
193 | sockets_cleanup: | |
194 | if (csock != -1) closesocket(csock); | |
195 | if (tsock != -1) closesocket(tsock); | |
196 | if (dsock != -1) closesocket(dsock); | |
197 | return -1; | |
198 | } | |
199 | ||
200 | static int | |
201 | raop_rtp_resend_callback(void *opaque, unsigned short seqnum, unsigned short count) | |
202 | { | |
203 | raop_rtp_t *raop_rtp = opaque; | |
204 | unsigned char packet[8]; | |
205 | unsigned short ourseqnum; | |
206 | struct sockaddr *addr; | |
207 | socklen_t addrlen; | |
ba0970e1 | 208 | int ret; |
2340bcd3 JVH |
209 | |
210 | addr = (struct sockaddr *)&raop_rtp->control_saddr; | |
211 | addrlen = raop_rtp->control_saddr_len; | |
212 | ||
14003408 | 213 | logger_log(raop_rtp->logger, LOGGER_DEBUG, "Got resend request %d %d\n", seqnum, count); |
2340bcd3 JVH |
214 | ourseqnum = raop_rtp->control_seqnum++; |
215 | ||
216 | /* Fill the request buffer */ | |
217 | packet[0] = 0x80; | |
218 | packet[1] = 0x55|0x80; | |
219 | packet[2] = (ourseqnum >> 8); | |
220 | packet[3] = ourseqnum; | |
221 | packet[4] = (seqnum >> 8); | |
222 | packet[5] = seqnum; | |
223 | packet[6] = (count >> 8); | |
224 | packet[7] = count; | |
225 | ||
ba0970e1 JVH |
226 | ret = sendto(raop_rtp->csock, (const char *)packet, sizeof(packet), 0, addr, addrlen); |
227 | if (ret == -1) { | |
228 | logger_log(raop_rtp->logger, LOGGER_WARNING, "Resend failed: %d\n", SOCKET_GET_ERROR()); | |
229 | } | |
230 | ||
2340bcd3 JVH |
231 | return 0; |
232 | } | |
233 | ||
234 | static THREAD_RETVAL | |
235 | raop_rtp_thread_udp(void *arg) | |
236 | { | |
237 | raop_rtp_t *raop_rtp = arg; | |
238 | unsigned char packet[RAOP_PACKET_LEN]; | |
239 | unsigned int packetlen; | |
240 | struct sockaddr_storage saddr; | |
241 | socklen_t saddrlen; | |
aaa2c733 | 242 | float volume = 0.0; |
2340bcd3 JVH |
243 | |
244 | const ALACSpecificConfig *config; | |
245 | void *cb_data = NULL; | |
246 | ||
247 | assert(raop_rtp); | |
248 | ||
249 | config = raop_buffer_get_config(raop_rtp->buffer); | |
067f00ef | 250 | cb_data = raop_rtp->callbacks.audio_init(raop_rtp->callbacks.cls, |
2340bcd3 JVH |
251 | config->bitDepth, |
252 | config->numChannels, | |
253 | config->sampleRate); | |
254 | ||
255 | while(1) { | |
256 | int volume_changed; | |
2340bcd3 JVH |
257 | int flush; |
258 | ||
259 | fd_set rfds; | |
260 | struct timeval tv; | |
261 | int nfds, ret; | |
262 | ||
263 | MUTEX_LOCK(raop_rtp->run_mutex); | |
264 | if (!raop_rtp->running) { | |
265 | MUTEX_UNLOCK(raop_rtp->run_mutex); | |
266 | break; | |
267 | } | |
268 | /* Read the volume level */ | |
269 | volume_changed = (volume != raop_rtp->volume); | |
270 | volume = raop_rtp->volume; | |
271 | ||
272 | /* Read the flush value */ | |
273 | flush = raop_rtp->flush; | |
274 | raop_rtp->flush = NO_FLUSH; | |
275 | MUTEX_UNLOCK(raop_rtp->run_mutex); | |
276 | ||
277 | /* Call set_volume callback if changed */ | |
278 | if (volume_changed) { | |
279 | raop_rtp->callbacks.audio_set_volume(raop_rtp->callbacks.cls, cb_data, volume); | |
280 | } | |
281 | if (flush != NO_FLUSH) { | |
282 | raop_buffer_flush(raop_rtp->buffer, flush); | |
283 | raop_rtp->callbacks.audio_flush(raop_rtp->callbacks.cls, cb_data); | |
284 | } | |
285 | ||
286 | /* Set timeout value to 5ms */ | |
287 | tv.tv_sec = 0; | |
288 | tv.tv_usec = 5000; | |
289 | ||
290 | /* Get the correct nfds value */ | |
291 | nfds = raop_rtp->csock+1; | |
292 | if (raop_rtp->tsock >= nfds) | |
293 | nfds = raop_rtp->tsock+1; | |
294 | if (raop_rtp->dsock >= nfds) | |
295 | nfds = raop_rtp->dsock+1; | |
296 | ||
297 | /* Set rfds and call select */ | |
298 | FD_ZERO(&rfds); | |
299 | FD_SET(raop_rtp->csock, &rfds); | |
300 | FD_SET(raop_rtp->tsock, &rfds); | |
301 | FD_SET(raop_rtp->dsock, &rfds); | |
302 | ret = select(nfds, &rfds, NULL, NULL, &tv); | |
303 | if (ret == 0) { | |
304 | /* Timeout happened */ | |
305 | continue; | |
306 | } else if (ret == -1) { | |
307 | /* FIXME: Error happened */ | |
308 | break; | |
309 | } | |
310 | ||
311 | if (FD_ISSET(raop_rtp->csock, &rfds)) { | |
312 | saddrlen = sizeof(saddr); | |
313 | packetlen = recvfrom(raop_rtp->csock, (char *)packet, sizeof(packet), 0, | |
314 | (struct sockaddr *)&saddr, &saddrlen); | |
315 | ||
ba0970e1 | 316 | /* Get the destination address here, because we need the sin6_scope_id */ |
2340bcd3 JVH |
317 | memcpy(&raop_rtp->control_saddr, &saddr, saddrlen); |
318 | raop_rtp->control_saddr_len = saddrlen; | |
319 | ||
320 | if (packetlen >= 12) { | |
321 | char type = packet[1] & ~0x80; | |
322 | ||
14003408 | 323 | logger_log(raop_rtp->logger, LOGGER_DEBUG, "Got control packet of type 0x%02x\n", type); |
2340bcd3 JVH |
324 | if (type == 0x56) { |
325 | /* Handle resent data packet */ | |
326 | int ret = raop_buffer_queue(raop_rtp->buffer, packet+4, packetlen-4, 1); | |
327 | assert(ret >= 0); | |
328 | } | |
329 | } | |
330 | } else if (FD_ISSET(raop_rtp->tsock, &rfds)) { | |
331 | logger_log(raop_rtp->logger, LOGGER_INFO, "Would have timing packet in queue\n"); | |
332 | } else if (FD_ISSET(raop_rtp->dsock, &rfds)) { | |
333 | saddrlen = sizeof(saddr); | |
334 | packetlen = recvfrom(raop_rtp->dsock, (char *)packet, sizeof(packet), 0, | |
335 | (struct sockaddr *)&saddr, &saddrlen); | |
336 | if (packetlen >= 12) { | |
337 | int no_resend = (raop_rtp->control_rport == 0); | |
338 | int ret; | |
339 | ||
340 | const void *audiobuf; | |
341 | int audiobuflen; | |
342 | ||
343 | ret = raop_buffer_queue(raop_rtp->buffer, packet, packetlen, 1); | |
344 | assert(ret >= 0); | |
345 | ||
346 | /* Decode all frames in queue */ | |
347 | while ((audiobuf = raop_buffer_dequeue(raop_rtp->buffer, &audiobuflen, no_resend))) { | |
348 | raop_rtp->callbacks.audio_process(raop_rtp->callbacks.cls, cb_data, audiobuf, audiobuflen); | |
349 | } | |
350 | ||
351 | /* Handle possible resend requests */ | |
352 | if (!no_resend) { | |
353 | raop_buffer_handle_resends(raop_rtp->buffer, raop_rtp_resend_callback, raop_rtp); | |
354 | } | |
355 | } | |
356 | } | |
357 | } | |
358 | logger_log(raop_rtp->logger, LOGGER_INFO, "Exiting thread\n"); | |
359 | raop_rtp->callbacks.audio_destroy(raop_rtp->callbacks.cls, cb_data); | |
360 | ||
361 | return 0; | |
362 | } | |
363 | ||
364 | static THREAD_RETVAL | |
365 | raop_rtp_thread_tcp(void *arg) | |
366 | { | |
367 | raop_rtp_t *raop_rtp = arg; | |
368 | int stream_fd = -1; | |
369 | unsigned char packet[RAOP_PACKET_LEN]; | |
370 | unsigned int packetlen = 0; | |
aaa2c733 | 371 | float volume = 0.0; |
2340bcd3 JVH |
372 | |
373 | const ALACSpecificConfig *config; | |
374 | void *cb_data = NULL; | |
375 | ||
376 | assert(raop_rtp); | |
377 | ||
378 | config = raop_buffer_get_config(raop_rtp->buffer); | |
067f00ef | 379 | cb_data = raop_rtp->callbacks.audio_init(raop_rtp->callbacks.cls, |
2340bcd3 JVH |
380 | config->bitDepth, |
381 | config->numChannels, | |
382 | config->sampleRate); | |
383 | ||
384 | while (1) { | |
385 | int volume_changed; | |
2340bcd3 JVH |
386 | |
387 | fd_set rfds; | |
388 | struct timeval tv; | |
389 | int nfds, ret; | |
390 | ||
391 | MUTEX_LOCK(raop_rtp->run_mutex); | |
392 | if (!raop_rtp->running) { | |
393 | MUTEX_UNLOCK(raop_rtp->run_mutex); | |
394 | break; | |
395 | } | |
396 | volume_changed = (volume != raop_rtp->volume); | |
397 | volume = raop_rtp->volume; | |
398 | MUTEX_UNLOCK(raop_rtp->run_mutex); | |
399 | ||
400 | /* Call set_volume callback if changed */ | |
401 | if (volume_changed) { | |
402 | raop_rtp->callbacks.audio_set_volume(raop_rtp->callbacks.cls, cb_data, volume); | |
403 | } | |
404 | ||
405 | /* Set timeout value to 5ms */ | |
406 | tv.tv_sec = 0; | |
407 | tv.tv_usec = 5000; | |
408 | ||
409 | /* Get the correct nfds value and set rfds */ | |
410 | FD_ZERO(&rfds); | |
411 | if (stream_fd == -1) { | |
412 | FD_SET(raop_rtp->dsock, &rfds); | |
413 | nfds = raop_rtp->dsock+1; | |
414 | } else { | |
415 | FD_SET(stream_fd, &rfds); | |
416 | nfds = stream_fd+1; | |
417 | } | |
418 | ret = select(nfds, &rfds, NULL, NULL, &tv); | |
419 | if (ret == 0) { | |
420 | /* Timeout happened */ | |
421 | continue; | |
422 | } else if (ret == -1) { | |
423 | /* FIXME: Error happened */ | |
424 | logger_log(raop_rtp->logger, LOGGER_INFO, "Error in select\n"); | |
425 | break; | |
426 | } | |
427 | if (stream_fd == -1 && FD_ISSET(raop_rtp->dsock, &rfds)) { | |
428 | struct sockaddr_storage saddr; | |
429 | socklen_t saddrlen; | |
430 | ||
431 | logger_log(raop_rtp->logger, LOGGER_INFO, "Accepting client\n"); | |
432 | saddrlen = sizeof(saddr); | |
433 | stream_fd = accept(raop_rtp->dsock, (struct sockaddr *)&saddr, &saddrlen); | |
434 | if (stream_fd == -1) { | |
435 | /* FIXME: Error happened */ | |
436 | logger_log(raop_rtp->logger, LOGGER_INFO, "Error in accept %d %s\n", errno, strerror(errno)); | |
437 | break; | |
438 | } | |
439 | } | |
440 | if (stream_fd != -1 && FD_ISSET(stream_fd, &rfds)) { | |
441 | unsigned int rtplen=0; | |
2340bcd3 JVH |
442 | |
443 | const void *audiobuf; | |
444 | int audiobuflen; | |
445 | ||
446 | ret = recv(stream_fd, (char *)(packet+packetlen), sizeof(packet)-packetlen, 0); | |
447 | if (ret == 0) { | |
448 | /* TCP socket closed */ | |
449 | logger_log(raop_rtp->logger, LOGGER_INFO, "TCP socket closed\n"); | |
450 | break; | |
451 | } else if (ret == -1) { | |
452 | /* FIXME: Error happened */ | |
453 | logger_log(raop_rtp->logger, LOGGER_INFO, "Error in recv\n"); | |
454 | break; | |
455 | } | |
456 | packetlen += ret; | |
457 | ||
458 | /* Check that we have enough bytes */ | |
459 | if (packetlen < 4) { | |
460 | continue; | |
461 | } | |
462 | if (packet[0] != '$' || packet[1] != '\0') { | |
463 | /* FIXME: Incorrect RTP magic bytes */ | |
464 | break; | |
465 | } | |
466 | rtplen = (packet[2] << 8) | packet[3]; | |
467 | if (rtplen > sizeof(packet)) { | |
468 | /* FIXME: Too long packet */ | |
469 | logger_log(raop_rtp->logger, LOGGER_INFO, "Error, packet too long %d\n", rtplen); | |
470 | break; | |
471 | } | |
472 | if (packetlen < 4+rtplen) { | |
473 | continue; | |
474 | } | |
475 | ||
476 | /* Packet is valid, process it */ | |
2340bcd3 JVH |
477 | ret = raop_buffer_queue(raop_rtp->buffer, packet+4, rtplen, 0); |
478 | assert(ret >= 0); | |
479 | ||
480 | /* Remove processed bytes from packet buffer */ | |
481 | memmove(packet, packet+4+rtplen, packetlen-rtplen); | |
482 | packetlen -= 4+rtplen; | |
483 | ||
484 | /* Decode the received frame */ | |
485 | if ((audiobuf = raop_buffer_dequeue(raop_rtp->buffer, &audiobuflen, 1))) { | |
486 | raop_rtp->callbacks.audio_process(raop_rtp->callbacks.cls, cb_data, audiobuf, audiobuflen); | |
487 | } | |
488 | } | |
489 | } | |
490 | ||
491 | /* Close the stream file descriptor */ | |
492 | if (stream_fd != -1) { | |
493 | closesocket(stream_fd); | |
494 | } | |
495 | ||
496 | logger_log(raop_rtp->logger, LOGGER_INFO, "Exiting thread\n"); | |
497 | raop_rtp->callbacks.audio_destroy(raop_rtp->callbacks.cls, cb_data); | |
498 | ||
499 | return 0; | |
500 | } | |
501 | ||
502 | void | |
503 | raop_rtp_start(raop_rtp_t *raop_rtp, int use_udp, unsigned short control_rport, unsigned short timing_rport, | |
504 | unsigned short *control_lport, unsigned short *timing_lport, unsigned short *data_lport) | |
505 | { | |
ba0970e1 JVH |
506 | int use_ipv6 = 0; |
507 | ||
2340bcd3 JVH |
508 | assert(raop_rtp); |
509 | ||
510 | MUTEX_LOCK(raop_rtp->run_mutex); | |
511 | if (raop_rtp->running || !raop_rtp->joined) { | |
512 | MUTEX_UNLOCK(raop_rtp->run_mutex); | |
513 | return; | |
514 | } | |
515 | ||
516 | /* Initialize ports and sockets */ | |
517 | raop_rtp->control_rport = control_rport; | |
518 | raop_rtp->timing_rport = timing_rport; | |
ba0970e1 JVH |
519 | if (raop_rtp->remote_saddr.ss_family == AF_INET6) { |
520 | use_ipv6 = 1; | |
521 | } | |
522 | if (raop_rtp_init_sockets(raop_rtp, use_ipv6, use_udp) < 0) { | |
2340bcd3 JVH |
523 | logger_log(raop_rtp->logger, LOGGER_INFO, "Initializing sockets failed\n"); |
524 | MUTEX_UNLOCK(raop_rtp->run_mutex); | |
525 | return; | |
526 | } | |
527 | if (control_lport) *control_lport = raop_rtp->control_lport; | |
528 | if (timing_lport) *timing_lport = raop_rtp->timing_lport; | |
529 | if (data_lport) *data_lport = raop_rtp->data_lport; | |
530 | ||
531 | /* Create the thread and initialize running values */ | |
532 | raop_rtp->running = 1; | |
533 | raop_rtp->joined = 0; | |
534 | if (use_udp) { | |
535 | THREAD_CREATE(raop_rtp->thread, raop_rtp_thread_udp, raop_rtp); | |
536 | } else { | |
537 | THREAD_CREATE(raop_rtp->thread, raop_rtp_thread_tcp, raop_rtp); | |
538 | } | |
539 | MUTEX_UNLOCK(raop_rtp->run_mutex); | |
540 | } | |
541 | ||
542 | void | |
543 | raop_rtp_set_volume(raop_rtp_t *raop_rtp, float volume) | |
544 | { | |
545 | assert(raop_rtp); | |
546 | ||
547 | if (volume > 0.0f) { | |
548 | volume = 0.0f; | |
549 | } else if (volume < -144.0f) { | |
550 | volume = -144.0f; | |
551 | } | |
552 | ||
553 | /* Set volume in thread instead */ | |
554 | MUTEX_LOCK(raop_rtp->run_mutex); | |
555 | raop_rtp->volume = volume; | |
556 | MUTEX_UNLOCK(raop_rtp->run_mutex); | |
557 | } | |
558 | ||
559 | void | |
560 | raop_rtp_flush(raop_rtp_t *raop_rtp, int next_seq) | |
561 | { | |
562 | assert(raop_rtp); | |
563 | ||
564 | /* Call flush in thread instead */ | |
565 | MUTEX_LOCK(raop_rtp->run_mutex); | |
566 | raop_rtp->flush = next_seq; | |
567 | MUTEX_UNLOCK(raop_rtp->run_mutex); | |
568 | } | |
569 | ||
570 | void | |
571 | raop_rtp_stop(raop_rtp_t *raop_rtp) | |
572 | { | |
573 | assert(raop_rtp); | |
574 | ||
575 | /* Check that we are running and thread is not | |
576 | * joined (should never be while still running) */ | |
577 | MUTEX_LOCK(raop_rtp->run_mutex); | |
578 | if (!raop_rtp->running || raop_rtp->joined) { | |
579 | MUTEX_UNLOCK(raop_rtp->run_mutex); | |
580 | return; | |
581 | } | |
582 | raop_rtp->running = 0; | |
583 | MUTEX_UNLOCK(raop_rtp->run_mutex); | |
584 | ||
585 | /* Join the thread */ | |
586 | THREAD_JOIN(raop_rtp->thread); | |
587 | if (raop_rtp->csock != -1) closesocket(raop_rtp->csock); | |
588 | if (raop_rtp->tsock != -1) closesocket(raop_rtp->tsock); | |
589 | if (raop_rtp->dsock != -1) closesocket(raop_rtp->dsock); | |
590 | ||
591 | /* Flush buffer into initial state */ | |
592 | raop_buffer_flush(raop_rtp->buffer, -1); | |
593 | ||
594 | /* Mark thread as joined */ | |
595 | MUTEX_LOCK(raop_rtp->run_mutex); | |
596 | raop_rtp->joined = 1; | |
597 | MUTEX_UNLOCK(raop_rtp->run_mutex); | |
598 | } |