code.delx.au - pulseaudio/blob - src/modules/module-raop-sink.c

   1 /* $Id$ */
   2
   3 /***
   4   This file is part of PulseAudio.
   5
   6   Copyright 2004-2006 Lennart Poettering
   7   Copyright 2008      Colin Guthrie
   8
   9   PulseAudio is free software; you can redistribute it and/or modify
  10   it under the terms of the GNU Lesser General Public License as published
  11   by the Free Software Foundation; either version 2 of the License,
  12   or (at your option) any later version.
  13
  14   PulseAudio is distributed in the hope that it will be useful, but
  15   WITHOUT ANY WARRANTY; without even the implied warranty of
  16   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  17   General Public License for more details.
  18
  19   You should have received a copy of the GNU Lesser General Public License
  20   along with PulseAudio; if not, write to the Free Software
  21   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  22   USA.
  23 ***/
  24
  25 #ifdef HAVE_CONFIG_H
  26 #include <config.h>
  27 #endif
  28
  29 #include <stdlib.h>
  30 #include <sys/stat.h>
  31 #include <stdio.h>
  32 #include <errno.h>
  33 #include <string.h>
  34 #include <fcntl.h>
  35 #include <unistd.h>
  36 #include <limits.h>
  37 #include <sys/ioctl.h>
  38 #include <poll.h>
  39
  40 #include <pulse/xmalloc.h>
  41
  42 #include <pulsecore/core-error.h>
  43 #include <pulsecore/sink.h>
  44 #include <pulsecore/module.h>
  45 #include <pulsecore/core-util.h>
  46 #include <pulsecore/modargs.h>
  47 #include <pulsecore/log.h>
  48 #include <pulsecore/thread.h>
  49 #include <pulsecore/thread-mq.h>
  50 #include <pulsecore/random.h>
  51 #include <pulsecore/rtpoll.h>
  52
  53 #include "rtp.h"
  54 #include "sdp.h"
  55 #include "sap.h"
  56 #include "raop_client.h"
  57
  58
  59 #include "module-raop-sink-symdef.h"
  60
  61 #define JACK_STATUS_DISCONNECTED 0
  62 #define JACK_STATUS_CONNECTED 1
  63
  64 #define JACK_TYPE_ANALOG 0
  65 #define JACK_TYPE_DIGITAL 1
  66
  67 #define VOLUME_DEF -30
  68 #define VOLUME_MIN -144
  69 #define VOLUME_MAX 0
  70
  71
  72 PA_MODULE_AUTHOR("Colin Guthrie");
  73 PA_MODULE_DESCRIPTION("RAOP Sink (Apple Airport)");
  74 PA_MODULE_VERSION(PACKAGE_VERSION);
  75 PA_MODULE_LOAD_ONCE(FALSE);
  76 PA_MODULE_USAGE(
  77         "server=<address> "
  78         "sink_name=<name for the sink> "
  79         "format=<sample format> "
  80         "channels=<number of channels> "
  81         "rate=<sample rate>"
  82         "channel_map=<channel map>");
  83
  84 #define DEFAULT_SINK_NAME "airtunes"
  85
  86 struct userdata {
  87     pa_core *core;
  88     pa_module *module;
  89     pa_sink *sink;
  90
  91     pa_thread *thread;
  92     pa_thread_mq thread_mq;
  93     pa_rtpoll *rtpoll;
  94
  95     char *server_name;
  96
  97     pa_raop_client *raop;
  98     //pa_socket_client *client;
  99     pa_memchunk memchunk;
 100
 101     pa_rtpoll_item *rtpoll_item;
 102 };
 103
 104 static const char* const valid_modargs[] = {
 105     "server",
 106     "rate",
 107     "format",
 108     "channels",
 109     "sink_name",
 110     "channel_map",
 111     NULL
 112 };
 113
 114 static int sink_process_msg(pa_msgobject *o, int code, void *data, int64_t offset, pa_memchunk *chunk) {
 115     struct userdata *u = PA_SINK(o)->userdata;
 116
 117     switch (code) {
 118
 119         case PA_SINK_MESSAGE_GET_LATENCY: {
 120             size_t n = 0;
 121             //int l;
 122
 123 #ifdef TIOCINQ
 124             /*
 125             if (ioctl(u->fd, TIOCINQ, &l) >= 0 && l > 0)
 126                 n = (size_t) l;
 127             */
 128 #endif
 129
 130             n += u->memchunk.length;
 131
 132             *((pa_usec_t*) data) = pa_bytes_to_usec(n, &u->sink->sample_spec);
 133             break;
 134         }
 135     }
 136
 137     return pa_sink_process_msg(o, code, data, offset, chunk);
 138 }
 139
 140 static void thread_func(void *userdata) {
 141     struct userdata *u = userdata;
 142     //int write_type = 0;
 143
 144     pa_assert(u);
 145
 146     pa_log_debug("Thread starting up");
 147
 148     pa_thread_mq_install(&u->thread_mq);
 149     pa_rtpoll_install(u->rtpoll);
 150
 151     for (;;) {
 152         struct pollfd *pollfd;
 153         int ret;
 154
 155         pollfd = pa_rtpoll_item_get_pollfd(u->rtpoll_item, NULL);
 156
 157         /* Render some data and write it to the fifo */
 158         if (u->sink->thread_info.state == PA_SINK_RUNNING && pollfd->revents) {
 159             ssize_t l;
 160             void *p;
 161
 162             if (u->memchunk.length <= 0)
 163                 pa_sink_render(u->sink, PIPE_BUF, &u->memchunk);
 164
 165             pa_assert(u->memchunk.length > 0);
 166
 167             p = pa_memblock_acquire(u->memchunk.memblock);
 168             //l = pa_write(u->fd, (uint8_t*) p + u->memchunk.index, u->memchunk.length, &write_type);
 169             // Fake the length of the "write".
 170             l = u->memchunk.length;
 171             pa_memblock_release(u->memchunk.memblock);
 172
 173             pa_assert(l != 0);
 174
 175             if (l < 0) {
 176
 177                 if (errno == EINTR)
 178                     continue;
 179                 else if (errno != EAGAIN) {
 180                     pa_log("Failed to write data to FIFO: %s", pa_cstrerror(errno));
 181                     goto fail;
 182                 }
 183
 184             } else {
 185
 186                 u->memchunk.index += l;
 187                 u->memchunk.length -= l;
 188
 189                 if (u->memchunk.length <= 0) {
 190                     pa_memblock_unref(u->memchunk.memblock);
 191                     pa_memchunk_reset(&u->memchunk);
 192                 }
 193
 194                 pollfd->revents = 0;
 195             }
 196         }
 197
 198         /* Hmm, nothing to do. Let's sleep */
 199         pollfd->events = u->sink->thread_info.state == PA_SINK_RUNNING ? POLLOUT : 0;
 200
 201         if ((ret = pa_rtpoll_run(u->rtpoll, TRUE)) < 0)
 202             goto fail;
 203
 204         if (ret == 0)
 205             goto finish;
 206
 207         pollfd = pa_rtpoll_item_get_pollfd(u->rtpoll_item, NULL);
 208
 209         if (pollfd->revents & ~POLLOUT) {
 210             pa_log("FIFO shutdown.");
 211             goto fail;
 212         }
 213     }
 214
 215 fail:
 216     /* If this was no regular exit from the loop we have to continue
 217      * processing messages until we received PA_MESSAGE_SHUTDOWN */
 218     pa_asyncmsgq_post(u->thread_mq.outq, PA_MSGOBJECT(u->core), PA_CORE_MESSAGE_UNLOAD_MODULE, u->module, 0, NULL, NULL);
 219     pa_asyncmsgq_wait_for(u->thread_mq.inq, PA_MESSAGE_SHUTDOWN);
 220
 221 finish:
 222     pa_log_debug("Thread shutting down");
 223 }
 224
 225 int pa__init(pa_module*m) {
 226     struct userdata *u;
 227     //struct stat st;
 228     pa_sample_spec ss;
 229     pa_channel_map map;
 230     pa_modargs *ma;
 231     char *t;
 232     struct pollfd *pollfd;
 233
 234     pa_assert(m);
 235
 236     if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
 237         pa_log("Failed to parse module arguments.");
 238         goto fail;
 239     }
 240
 241     ss = m->core->default_sample_spec;
 242     if (pa_modargs_get_sample_spec_and_channel_map(ma, &ss, &map, PA_CHANNEL_MAP_DEFAULT) < 0) {
 243         pa_log("Invalid sample format specification or channel map");
 244         goto fail;
 245     }
 246
 247     u = pa_xnew0(struct userdata, 1);
 248     u->core = m->core;
 249     u->module = m;
 250     m->userdata = u;
 251
 252     pa_memchunk_reset(&u->memchunk);
 253     pa_thread_mq_init(&u->thread_mq, m->core->mainloop);
 254     u->rtpoll = pa_rtpoll_new();
 255     pa_rtpoll_item_new_asyncmsgq(u->rtpoll, PA_RTPOLL_EARLY, u->thread_mq.inq);
 256
 257     u->server_name = pa_xstrdup(pa_modargs_get_value(ma, "server", NULL));
 258
 259     // Open a connection to the server... this is just to connect and test....
 260     /*
 261     mkfifo(u->filename, 0666);
 262     if ((u->fd = open(u->filename, O_RDWR|O_NOCTTY)) < 0) {
 263         pa_log("open('%s'): %s", u->filename, pa_cstrerror(errno));
 264         goto fail;
 265     }
 266
 267     pa_make_fd_cloexec(u->fd);
 268     pa_make_fd_nonblock(u->fd);
 269
 270     if (fstat(u->fd, &st) < 0) {
 271         pa_log("fstat('%s'): %s", u->filename, pa_cstrerror(errno));
 272         goto fail;
 273     }
 274
 275     if (!S_ISFIFO(st.st_mode)) {
 276         pa_log("'%s' is not a FIFO.", u->filename);
 277         goto fail;
 278     }
 279     */
 280     if (!(u->sink = pa_sink_new(m->core, __FILE__, pa_modargs_get_value(ma, "sink_name", DEFAULT_SINK_NAME), 0, &ss, &map))) {
 281         pa_log("Failed to create sink.");
 282         goto fail;
 283     }
 284
 285     u->sink->parent.process_msg = sink_process_msg;
 286     u->sink->userdata = u;
 287     u->sink->flags = PA_SINK_LATENCY;
 288
 289     pa_sink_set_module(u->sink, m);
 290     pa_sink_set_asyncmsgq(u->sink, u->thread_mq.inq);
 291     pa_sink_set_rtpoll(u->sink, u->rtpoll);
 292     pa_sink_set_description(u->sink, t = pa_sprintf_malloc("Airtunes sink '%s'", u->server_name));
 293     pa_xfree(t);
 294
 295     u->rtpoll_item = pa_rtpoll_item_new(u->rtpoll, PA_RTPOLL_NEVER, 1);
 296     pollfd = pa_rtpoll_item_get_pollfd(u->rtpoll_item, NULL);
 297     //pollfd->fd = u->fd;
 298     pollfd->events = pollfd->revents = 0;
 299
 300     if (!(u->thread = pa_thread_new(thread_func, u))) {
 301         pa_log("Failed to create thread.");
 302         goto fail;
 303     }
 304
 305     pa_sink_put(u->sink);
 306
 307     pa_modargs_free(ma);
 308
 309     return 0;
 310
 311 fail:
 312     if (ma)
 313         pa_modargs_free(ma);
 314
 315     pa__done(m);
 316
 317     return -1;
 318 }
 319
 320 void pa__done(pa_module*m) {
 321     struct userdata *u;
 322
 323     pa_assert(m);
 324
 325     if (!(u = m->userdata))
 326         return;
 327
 328     if (u->sink)
 329         pa_sink_unlink(u->sink);
 330
 331     if (u->thread) {
 332         pa_asyncmsgq_send(u->thread_mq.inq, NULL, PA_MESSAGE_SHUTDOWN, NULL, 0, NULL);
 333         pa_thread_free(u->thread);
 334     }
 335
 336     pa_thread_mq_done(&u->thread_mq);
 337
 338     if (u->sink)
 339         pa_sink_unref(u->sink);
 340
 341     if (u->memchunk.memblock)
 342        pa_memblock_unref(u->memchunk.memblock);
 343
 344     if (u->rtpoll_item)
 345         pa_rtpoll_item_free(u->rtpoll_item);
 346
 347     if (u->rtpoll)
 348         pa_rtpoll_free(u->rtpoll);
 349
 350     pa_xfree(u->server_name);
 351     pa_xfree(u);
 352 }