1 /* $Id: module-esound-sink.c 2043 2007-11-09 18:25:40Z lennart $ */
4 This file is part of PulseAudio.
6 Copyright 2008 Colin Guthrie
8 PulseAudio is free software; you can redistribute it and/or modify
9 it under the terms of the GNU Lesser General Public License as published
10 by the Free Software Foundation; either version 2 of the License,
11 or (at your option) any later version.
13 PulseAudio is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 General Public License for more details.
18 You should have received a copy of the GNU Lesser General Public License
19 along with PulseAudio; if not, write to the Free Software
20 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
37 #include <sys/socket.h>
38 #include <netinet/in.h>
39 #include <netinet/tcp.h>
40 #include <sys/ioctl.h>
42 #ifdef HAVE_LINUX_SOCKIOS_H
43 #include <linux/sockios.h>
46 #include <pulse/xmalloc.h>
47 #include <pulse/timeval.h>
49 #include <pulsecore/core-error.h>
50 #include <pulsecore/iochannel.h>
51 #include <pulsecore/sink.h>
52 #include <pulsecore/module.h>
53 #include <pulsecore/core-util.h>
54 #include <pulsecore/modargs.h>
55 #include <pulsecore/log.h>
56 #include <pulsecore/socket-client.h>
57 #include <pulsecore/authkey.h>
58 #include <pulsecore/thread-mq.h>
59 #include <pulsecore/thread.h>
60 #include <pulsecore/time-smoother.h>
61 #include <pulsecore/rtclock.h>
62 #include <pulsecore/socket-util.h>
64 #include "module-raop-sink-symdef.h"
68 #include "raop_client.h"
70 PA_MODULE_AUTHOR("Colin Guthrie");
71 PA_MODULE_DESCRIPTION("RAOP Sink (Apple Airtunes)");
72 PA_MODULE_VERSION(PACKAGE_VERSION);
73 PA_MODULE_LOAD_ONCE(FALSE);
75 "sink_name=<name for the sink> "
76 "server=<address> cookie=<filename> "
77 "format=<sample format> "
78 "channels=<number of channels> "
79 "rate=<sample rate>");
81 #define DEFAULT_SINK_NAME "airtunes"
88 pa_thread_mq thread_mq;
90 pa_rtpoll_item *rtpoll_item;
93 pa_memchunk raw_memchunk;
94 pa_memchunk encoded_memchunk;
97 size_t write_length, write_index;
100 size_t read_length, read_index;
104 /*esd_format_t format;*/
107 pa_smoother *smoother;
111 int64_t encoding_overhead;
112 int32_t next_encoding_overhead;
113 double encoding_ratio;
115 pa_raop_client *raop;
120 static const char* const valid_modargs[] = {
130 SINK_MESSAGE_PASS_SOCKET = PA_SINK_MESSAGE_MAX
133 static int sink_process_msg(pa_msgobject *o, int code, void *data, int64_t offset, pa_memchunk *chunk) {
134 struct userdata *u = PA_SINK(o)->userdata;
138 case PA_SINK_MESSAGE_SET_STATE:
140 switch ((pa_sink_state_t) PA_PTR_TO_UINT(data)) {
142 case PA_SINK_SUSPENDED:
143 pa_assert(PA_SINK_OPENED(u->sink->thread_info.state));
145 pa_smoother_pause(u->smoother, pa_rtclock_usec());
149 case PA_SINK_RUNNING:
151 if (u->sink->thread_info.state == PA_SINK_SUSPENDED)
152 pa_smoother_resume(u->smoother, pa_rtclock_usec());
156 case PA_SINK_UNLINKED:
163 case PA_SINK_MESSAGE_GET_LATENCY: {
166 r = pa_smoother_get(u->smoother, pa_rtclock_usec());
167 w = pa_bytes_to_usec((u->offset - u->encoding_overhead + (u->encoded_memchunk.length / u->encoding_ratio)), &u->sink->sample_spec);
169 *((pa_usec_t*) data) = w > r ? w - r : 0;
173 case SINK_MESSAGE_PASS_SOCKET: {
174 struct pollfd *pollfd;
176 pa_assert(!u->rtpoll_item);
178 u->rtpoll_item = pa_rtpoll_item_new(u->rtpoll, PA_RTPOLL_NEVER, 1);
179 pollfd = pa_rtpoll_item_get_pollfd(u->rtpoll_item, NULL);
181 pollfd->events = pollfd->revents = 0;
187 return pa_sink_process_msg(o, code, data, offset, chunk);
190 static void thread_func(void *userdata) {
191 struct userdata *u = userdata;
196 pa_log_debug("Thread starting up");
198 pa_thread_mq_install(&u->thread_mq);
199 pa_rtpoll_install(u->rtpoll);
201 pa_smoother_set_time_offset(u->smoother, pa_rtclock_usec());
206 if (u->rtpoll_item) {
207 struct pollfd *pollfd;
208 pollfd = pa_rtpoll_item_get_pollfd(u->rtpoll_item, NULL);
210 /* Render some data and write it to the fifo */
211 if (PA_SINK_OPENED(u->sink->thread_info.state) && pollfd->revents) {
219 if (u->raw_memchunk.length <= 0) {
220 if (u->raw_memchunk.memblock)
221 pa_memblock_unref(u->raw_memchunk.memblock);
222 pa_memchunk_reset(&u->raw_memchunk);
224 /* Grab unencoded data */
225 pa_sink_render(u->sink, u->block_size, &u->raw_memchunk);
227 pa_assert(u->raw_memchunk.length > 0);
229 if (u->encoded_memchunk.length <= 0) {
231 size_t rl = u->raw_memchunk.length;
232 u->encoding_overhead += u->next_encoding_overhead;
233 pa_raop_client_encode_sample(u->raop, &u->raw_memchunk, &u->encoded_memchunk);
234 u->next_encoding_overhead = (u->encoded_memchunk.length - (rl - u->raw_memchunk.length));
235 u->encoding_ratio = u->encoded_memchunk.length / (rl - u->raw_memchunk.length);
237 pa_assert(u->encoded_memchunk.length > 0);
239 p = pa_memblock_acquire(u->encoded_memchunk.memblock);
240 l = pa_write(u->fd, (uint8_t*) p + u->encoded_memchunk.index, u->encoded_memchunk.length, &write_type);
241 pa_memblock_release(u->encoded_memchunk.memblock);
249 else if (errno == EAGAIN) {
251 /* OK, we filled all socket buffers up
256 pa_log("Failed to write data to FIFO: %s", pa_cstrerror(errno));
263 u->encoded_memchunk.index += l;
264 u->encoded_memchunk.length -= l;
268 if (u->encoded_memchunk.length > 0)
270 /* OK, we wrote less that we asked for,
271 * hence we can assume that the socket
272 * buffers are full now */
279 /* At this spot we know that the socket buffers are
280 * fully filled up. This is the best time to estimate
281 * the playback position of the server */
288 if (ioctl(u->fd, SIOCOUTQ, &l) >= 0 && l > 0)
293 usec = pa_bytes_to_usec(n, &u->sink->sample_spec);
295 if (usec > u->latency)
300 pa_smoother_put(u->smoother, pa_rtclock_usec(), usec);
303 /* Hmm, nothing to do. Let's sleep */
304 pollfd->events = PA_SINK_OPENED(u->sink->thread_info.state) ? POLLOUT : 0;
307 if ((ret = pa_rtpoll_run(u->rtpoll, TRUE)) < 0)
313 if (u->rtpoll_item) {
314 struct pollfd* pollfd;
316 pollfd = pa_rtpoll_item_get_pollfd(u->rtpoll_item, NULL);
318 if (pollfd->revents & ~POLLOUT) {
319 pa_log("FIFO shutdown.");
326 /* If this was no regular exit from the loop we have to continue
327 * processing messages until we received PA_MESSAGE_SHUTDOWN */
328 pa_asyncmsgq_post(u->thread_mq.outq, PA_MSGOBJECT(u->core), PA_CORE_MESSAGE_UNLOAD_MODULE, u->module, 0, NULL, NULL);
329 pa_asyncmsgq_wait_for(u->thread_mq.inq, PA_MESSAGE_SHUTDOWN);
332 pa_log_debug("Thread shutting down");
335 static void on_connection(PA_GCC_UNUSED int fd, void*userdata) {
336 struct userdata *u = userdata;
339 pa_assert(u->fd < 0);
342 pa_log_debug("Connection authenticated, handing fd to IO thread...");
344 pa_asyncmsgq_post(u->thread_mq.inq, PA_MSGOBJECT(u->sink), SINK_MESSAGE_PASS_SOCKET, NULL, 0, NULL, NULL);
347 static void on_close(void*userdata) {
348 struct userdata *u = userdata;
351 pa_log_debug("Control connection closed.");
352 pa_module_unload_request(u->module);
355 int pa__init(pa_module*m) {
356 struct userdata *u = NULL;
359 pa_modargs *ma = NULL;
364 if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
365 pa_log("failed to parse module arguments");
369 ss = m->core->default_sample_spec;
370 if (pa_modargs_get_sample_spec(ma, &ss) < 0) {
371 pa_log("invalid sample format specification");
375 if ((/*ss.format != PA_SAMPLE_U8 &&*/ ss.format != PA_SAMPLE_S16NE) ||
377 pa_log("sample type support is limited to mono/stereo and U8 or S16NE sample data");
381 u = pa_xnew0(struct userdata, 1);
386 u->smoother = pa_smoother_new(PA_USEC_PER_SEC, PA_USEC_PER_SEC*2, TRUE);
387 pa_memchunk_reset(&u->raw_memchunk);
388 pa_memchunk_reset(&u->encoded_memchunk);
390 u->encoding_overhead = 0;
391 u->next_encoding_overhead = 0;
392 u->encoding_ratio = 1.0;
394 pa_thread_mq_init(&u->thread_mq, m->core->mainloop);
395 u->rtpoll = pa_rtpoll_new();
396 pa_rtpoll_item_new_asyncmsgq(u->rtpoll, PA_RTPOLL_EARLY, u->thread_mq.inq);
397 u->rtpoll_item = NULL;
400 (ss.format == PA_SAMPLE_U8 ? ESD_BITS8 : ESD_BITS16) |
401 (ss.channels == 2 ? ESD_STEREO : ESD_MONO);*/
403 u->block_size = pa_usec_to_bytes(PA_USEC_PER_SEC/20, &ss);
405 u->read_data = u->write_data = NULL;
406 u->read_index = u->write_index = u->read_length = u->write_length = 0;
408 /*u->state = STATE_AUTH;*/
411 if (!(u->sink = pa_sink_new(m->core, __FILE__, pa_modargs_get_value(ma, "sink_name", DEFAULT_SINK_NAME), 0, &ss, NULL))) {
412 pa_log("Failed to create sink.");
416 u->sink->parent.process_msg = sink_process_msg;
417 u->sink->userdata = u;
418 u->sink->flags = PA_SINK_LATENCY|PA_SINK_NETWORK;
420 pa_sink_set_module(u->sink, m);
421 pa_sink_set_asyncmsgq(u->sink, u->thread_mq.inq);
422 pa_sink_set_rtpoll(u->sink, u->rtpoll);
424 if (!(p = pa_modargs_get_value(ma, "server", NULL))) {
425 pa_log("No server argument given.");
429 if (!(u->raop = pa_raop_client_new(u->core, p))) {
430 pa_log("Failed to connect to server.");
434 pa_raop_client_set_callback(u->raop, on_connection, u);
435 pa_raop_client_set_closed_callback(u->raop, on_close, u);
436 pa_sink_set_description(u->sink, t = pa_sprintf_malloc("Airtunes sink '%s'", p));
440 if (!(u->thread = pa_thread_new(thread_func, u))) {
441 pa_log("Failed to create thread.");
445 pa_sink_put(u->sink);
460 void pa__done(pa_module*m) {
464 if (!(u = m->userdata))
468 pa_sink_unlink(u->sink);
471 pa_asyncmsgq_send(u->thread_mq.inq, NULL, PA_MESSAGE_SHUTDOWN, NULL, 0, NULL);
472 pa_thread_free(u->thread);
475 pa_thread_mq_done(&u->thread_mq);
478 pa_sink_unref(u->sink);
481 pa_rtpoll_item_free(u->rtpoll_item);
484 pa_rtpoll_free(u->rtpoll);
486 if (u->raw_memchunk.memblock)
487 pa_memblock_unref(u->raw_memchunk.memblock);
489 if (u->encoded_memchunk.memblock)
490 pa_memblock_unref(u->encoded_memchunk.memblock);
493 pa_raop_client_free(u->raop);
495 pa_xfree(u->read_data);
496 pa_xfree(u->write_data);
499 pa_smoother_free(u->smoother);