code.delx.au - pulseaudio/blob - src/modules/bluetooth/module-bluetooth-device.c

   1 /***
   2   This file is part of PulseAudio.
   3
   4   Copyright 2008 Joao Paulo Rechi Vita
   5
   6   PulseAudio is free software; you can redistribute it and/or modify
   7   it under the terms of the GNU Lesser General Public License as
   8   published by the Free Software Foundation; either version 2.1 of the
   9   License, or (at your option) any later version.
  10
  11   PulseAudio is distributed in the hope that it will be useful, but
  12   WITHOUT ANY WARRANTY; without even the implied warranty of
  13   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  14   General Public License for more details.
  15
  16   You should have received a copy of the GNU Lesser General Public
  17   License along with PulseAudio; if not, write to the Free Software
  18   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  19   USA.
  20 ***/
  21
  22 #ifdef HAVE_CONFIG_H
  23 #include <config.h>
  24 #endif
  25
  26 #include <string.h>
  27 #include <errno.h>
  28 #include <poll.h>
  29 #include <sys/ioctl.h>
  30 #include <linux/sockios.h>
  31 #include <arpa/inet.h>
  32
  33 #include <pulse/i18n.h>
  34 #include <pulse/rtclock.h>
  35 #include <pulse/sample.h>
  36 #include <pulse/timeval.h>
  37 #include <pulse/xmalloc.h>
  38
  39 #include <pulsecore/module.h>
  40 #include <pulsecore/modargs.h>
  41 #include <pulsecore/core-rtclock.h>
  42 #include <pulsecore/core-util.h>
  43 #include <pulsecore/core-error.h>
  44 #include <pulsecore/socket-util.h>
  45 #include <pulsecore/thread.h>
  46 #include <pulsecore/thread-mq.h>
  47 #include <pulsecore/rtpoll.h>
  48 #include <pulsecore/time-smoother.h>
  49 #include <pulsecore/namereg.h>
  50 #include <pulsecore/dbus-shared.h>
  51
  52 #include "module-bluetooth-device-symdef.h"
  53 #include "ipc.h"
  54 #include "sbc.h"
  55 #include "rtp.h"
  56 #include "bluetooth-util.h"
  57
  58 #define MAX_BITPOOL 64
  59 #define MIN_BITPOOL 2U
  60
  61 PA_MODULE_AUTHOR("Joao Paulo Rechi Vita");
  62 PA_MODULE_DESCRIPTION("Bluetooth audio sink and source");
  63 PA_MODULE_VERSION(PACKAGE_VERSION);
  64 PA_MODULE_LOAD_ONCE(FALSE);
  65 PA_MODULE_USAGE(
  66         "name=<name for the card/sink/source, to be prefixed> "
  67         "card_name=<name for the card> "
  68         "card_properties=<properties for the card> "
  69         "sink_name=<name for the sink> "
  70         "sink_properties=<properties for the sink> "
  71         "source_name=<name for the source> "
  72         "source_properties=<properties for the source> "
  73         "address=<address of the device> "
  74         "profile=<a2dp|hsp> "
  75         "rate=<sample rate> "
  76         "channels=<number of channels> "
  77         "path=<device object path>");
  78
  79 /*
  80 #ifdef NOKIA
  81         "sco_sink=<SCO over PCM sink name> "
  82         "sco_source=<SCO over PCM source name>"
  83 #endif
  84 */
  85
  86 /* TODO: not close fd when entering suspend mode in a2dp */
  87
  88 static const char* const valid_modargs[] = {
  89     "name",
  90     "card_name",
  91     "card_properties",
  92     "sink_name",
  93     "sink_properties",
  94     "source_name",
  95     "source_properties",
  96     "address",
  97     "profile",
  98     "rate",
  99     "channels",
 100     "path",
 101 #ifdef NOKIA
 102     "sco_sink",
 103     "sco_source",
 104 #endif
 105     NULL
 106 };
 107
 108 struct a2dp_info {
 109     sbc_capabilities_t sbc_capabilities;
 110     sbc_t sbc;                           /* Codec data */
 111     pa_bool_t sbc_initialized;           /* Keep track if the encoder is initialized */
 112     size_t codesize, frame_length;       /* SBC Codesize, frame_length. We simply cache those values here */
 113
 114     void* buffer;                        /* Codec transfer buffer */
 115     size_t buffer_size;                  /* Size of the buffer */
 116
 117     uint16_t seq_num;                    /* Cumulative packet sequence */
 118 };
 119
 120 struct hsp_info {
 121     pcm_capabilities_t pcm_capabilities;
 122 #ifdef NOKIA
 123     pa_sink *sco_sink;
 124     pa_source *sco_source;
 125 #endif
 126     pa_hook_slot *sink_state_changed_slot;
 127     pa_hook_slot *source_state_changed_slot;
 128 };
 129
 130 enum profile {
 131     PROFILE_A2DP,
 132     PROFILE_HSP,
 133     PROFILE_OFF
 134 };
 135
 136 struct userdata {
 137     pa_core *core;
 138     pa_module *module;
 139
 140     char *address;
 141     char *path;
 142     pa_bluetooth_discovery *discovery;
 143
 144     pa_dbus_connection *connection;
 145
 146     pa_card *card;
 147     pa_sink *sink;
 148     pa_source *source;
 149
 150     pa_thread_mq thread_mq;
 151     pa_rtpoll *rtpoll;
 152     pa_rtpoll_item *rtpoll_item;
 153     pa_thread *thread;
 154
 155     uint64_t read_index, write_index;
 156     pa_usec_t started_at;
 157     pa_smoother *read_smoother;
 158
 159     pa_memchunk write_memchunk;
 160
 161     pa_sample_spec sample_spec, requested_sample_spec;
 162
 163     int service_fd;
 164     int stream_fd;
 165
 166     size_t link_mtu;
 167     size_t block_size;
 168
 169     struct a2dp_info a2dp;
 170     struct hsp_info hsp;
 171
 172     enum profile profile;
 173
 174     pa_modargs *modargs;
 175
 176     int stream_write_type;
 177     int service_write_type, service_read_type;
 178 };
 179
 180 #define FIXED_LATENCY_PLAYBACK_A2DP (25*PA_USEC_PER_MSEC)
 181 #define FIXED_LATENCY_PLAYBACK_HSP (125*PA_USEC_PER_MSEC)
 182 #define FIXED_LATENCY_RECORD_HSP (25*PA_USEC_PER_MSEC)
 183
 184 #define MAX_PLAYBACK_CATCH_UP_USEC (100*PA_USEC_PER_MSEC)
 185
 186 #ifdef NOKIA
 187 #define USE_SCO_OVER_PCM(u) (u->profile == PROFILE_HSP && (u->hsp.sco_sink && u->hsp.sco_source))
 188 #endif
 189
 190 static int init_bt(struct userdata *u);
 191 static int init_profile(struct userdata *u);
 192
 193 static int service_send(struct userdata *u, const bt_audio_msg_header_t *msg) {
 194     ssize_t r;
 195
 196     pa_assert(u);
 197     pa_assert(u->service_fd >= 0);
 198     pa_assert(msg);
 199     pa_assert(msg->length > 0);
 200
 201     pa_log_debug("Sending %s -> %s",
 202                  pa_strnull(bt_audio_strtype(msg->type)),
 203                  pa_strnull(bt_audio_strname(msg->name)));
 204
 205     if ((r = pa_loop_write(u->service_fd, msg, msg->length, &u->service_write_type)) == (ssize_t) msg->length)
 206         return 0;
 207
 208     if (r < 0)
 209         pa_log_error("Error sending data to audio service: %s", pa_cstrerror(errno));
 210     else
 211         pa_log_error("Short write()");
 212
 213     return -1;
 214 }
 215
 216 static int service_recv(struct userdata *u, bt_audio_msg_header_t *msg, size_t room) {
 217     ssize_t r;
 218
 219     pa_assert(u);
 220     pa_assert(u->service_fd >= 0);
 221     pa_assert(msg);
 222
 223     if (room <= 0)
 224         room = BT_SUGGESTED_BUFFER_SIZE;
 225
 226     pa_log_debug("Trying to receive message from audio service...");
 227
 228     /* First, read the header */
 229     if ((r = pa_loop_read(u->service_fd, msg, sizeof(*msg), &u->service_read_type)) != sizeof(*msg))
 230         goto read_fail;
 231
 232     if (msg->length < sizeof(*msg)) {
 233         pa_log_error("Invalid message size.");
 234         return -1;
 235     }
 236
 237     /* Secondly, read the payload */
 238     if (msg->length > sizeof(*msg)) {
 239
 240         size_t remains = msg->length - sizeof(*msg);
 241
 242         if ((r = pa_loop_read(u->service_fd,
 243                               (uint8_t*) msg + sizeof(*msg),
 244                               remains,
 245                               &u->service_read_type)) != (ssize_t) remains)
 246             goto read_fail;
 247     }
 248
 249     pa_log_debug("Received %s <- %s",
 250                  pa_strnull(bt_audio_strtype(msg->type)),
 251                  pa_strnull(bt_audio_strname(msg->name)));
 252
 253     return 0;
 254
 255 read_fail:
 256
 257     if (r < 0)
 258         pa_log_error("Error receiving data from audio service: %s", pa_cstrerror(errno));
 259     else
 260         pa_log_error("Short read()");
 261
 262     return -1;
 263 }
 264
 265 static ssize_t service_expect(struct userdata*u, bt_audio_msg_header_t *rsp, size_t room, uint8_t expected_name, size_t expected_size) {
 266     int r;
 267
 268     pa_assert(u);
 269     pa_assert(u->service_fd >= 0);
 270     pa_assert(rsp);
 271
 272     if ((r = service_recv(u, rsp, room)) < 0)
 273         return r;
 274
 275     if ((rsp->type != BT_INDICATION && rsp->type != BT_RESPONSE) ||
 276         rsp->name != expected_name ||
 277         (expected_size > 0 && rsp->length != expected_size)) {
 278
 279         if (rsp->type == BT_ERROR && rsp->length == sizeof(bt_audio_error_t))
 280             pa_log_error("Received error condition: %s", pa_cstrerror(((bt_audio_error_t*) rsp)->posix_errno));
 281         else
 282             pa_log_error("Bogus message %s received while %s was expected",
 283                          pa_strnull(bt_audio_strname(rsp->name)),
 284                          pa_strnull(bt_audio_strname(expected_name)));
 285         return -1;
 286     }
 287
 288     return 0;
 289 }
 290
 291 /* Run from main thread */
 292 static int parse_caps(struct userdata *u, uint8_t seid, const struct bt_get_capabilities_rsp *rsp) {
 293     uint16_t bytes_left;
 294     const codec_capabilities_t *codec;
 295
 296     pa_assert(u);
 297     pa_assert(rsp);
 298
 299     bytes_left = rsp->h.length - sizeof(*rsp);
 300
 301     if (bytes_left < sizeof(codec_capabilities_t)) {
 302         pa_log_error("Packet too small to store codec information.");
 303         return -1;
 304     }
 305
 306     codec = (codec_capabilities_t *) rsp->data; /** ALIGNMENT? **/
 307
 308     pa_log_debug("Payload size is %lu %lu", (unsigned long) bytes_left, (unsigned long) sizeof(*codec));
 309
 310     if ((u->profile == PROFILE_A2DP && codec->transport != BT_CAPABILITIES_TRANSPORT_A2DP) ||
 311         (u->profile == PROFILE_HSP && codec->transport != BT_CAPABILITIES_TRANSPORT_SCO)) {
 312         pa_log_error("Got capabilities for wrong codec.");
 313         return -1;
 314     }
 315
 316     if (u->profile == PROFILE_HSP) {
 317
 318         if (bytes_left <= 0 || codec->length != sizeof(u->hsp.pcm_capabilities))
 319             return -1;
 320
 321         pa_assert(codec->type == BT_HFP_CODEC_PCM);
 322
 323         if (codec->configured && seid == 0)
 324             return codec->seid;
 325
 326         memcpy(&u->hsp.pcm_capabilities, codec, sizeof(u->hsp.pcm_capabilities));
 327
 328     } else if (u->profile == PROFILE_A2DP) {
 329
 330         while (bytes_left > 0) {
 331             if ((codec->type == BT_A2DP_SBC_SINK) && !codec->lock)
 332                 break;
 333
 334             bytes_left -= codec->length;
 335             codec = (const codec_capabilities_t*) ((const uint8_t*) codec + codec->length);
 336         }
 337
 338         if (bytes_left <= 0 || codec->length != sizeof(u->a2dp.sbc_capabilities))
 339             return -1;
 340
 341         pa_assert(codec->type == BT_A2DP_SBC_SINK);
 342
 343         if (codec->configured && seid == 0)
 344             return codec->seid;
 345
 346         memcpy(&u->a2dp.sbc_capabilities, codec, sizeof(u->a2dp.sbc_capabilities));
 347     }
 348
 349     return 0;
 350 }
 351
 352 /* Run from main thread */
 353 static int get_caps(struct userdata *u, uint8_t seid) {
 354     union {
 355         struct bt_get_capabilities_req getcaps_req;
 356         struct bt_get_capabilities_rsp getcaps_rsp;
 357         bt_audio_error_t error;
 358         uint8_t buf[BT_SUGGESTED_BUFFER_SIZE];
 359     } msg;
 360     int ret;
 361
 362     pa_assert(u);
 363
 364     memset(&msg, 0, sizeof(msg));
 365     msg.getcaps_req.h.type = BT_REQUEST;
 366     msg.getcaps_req.h.name = BT_GET_CAPABILITIES;
 367     msg.getcaps_req.h.length = sizeof(msg.getcaps_req);
 368     msg.getcaps_req.seid = seid;
 369
 370     pa_strlcpy(msg.getcaps_req.object, u->path, sizeof(msg.getcaps_req.object));
 371     if (u->profile == PROFILE_A2DP)
 372         msg.getcaps_req.transport = BT_CAPABILITIES_TRANSPORT_A2DP;
 373     else {
 374         pa_assert(u->profile == PROFILE_HSP);
 375         msg.getcaps_req.transport = BT_CAPABILITIES_TRANSPORT_SCO;
 376     }
 377     msg.getcaps_req.flags = BT_FLAG_AUTOCONNECT;
 378
 379     if (service_send(u, &msg.getcaps_req.h) < 0)
 380         return -1;
 381
 382     if (service_expect(u, &msg.getcaps_rsp.h, sizeof(msg), BT_GET_CAPABILITIES, 0) < 0)
 383         return -1;
 384
 385     ret = parse_caps(u, seid, &msg.getcaps_rsp);
 386     if (ret <= 0)
 387         return ret;
 388
 389     return get_caps(u, ret);
 390 }
 391
 392 /* Run from main thread */
 393 static uint8_t a2dp_default_bitpool(uint8_t freq, uint8_t mode) {
 394
 395     switch (freq) {
 396         case BT_SBC_SAMPLING_FREQ_16000:
 397         case BT_SBC_SAMPLING_FREQ_32000:
 398             return 53;
 399
 400         case BT_SBC_SAMPLING_FREQ_44100:
 401
 402             switch (mode) {
 403                 case BT_A2DP_CHANNEL_MODE_MONO:
 404                 case BT_A2DP_CHANNEL_MODE_DUAL_CHANNEL:
 405                     return 31;
 406
 407                 case BT_A2DP_CHANNEL_MODE_STEREO:
 408                 case BT_A2DP_CHANNEL_MODE_JOINT_STEREO:
 409                     return 53;
 410
 411                 default:
 412                     pa_log_warn("Invalid channel mode %u", mode);
 413                     return 53;
 414             }
 415
 416         case BT_SBC_SAMPLING_FREQ_48000:
 417
 418             switch (mode) {
 419                 case BT_A2DP_CHANNEL_MODE_MONO:
 420                 case BT_A2DP_CHANNEL_MODE_DUAL_CHANNEL:
 421                     return 29;
 422
 423                 case BT_A2DP_CHANNEL_MODE_STEREO:
 424                 case BT_A2DP_CHANNEL_MODE_JOINT_STEREO:
 425                     return 51;
 426
 427                 default:
 428                     pa_log_warn("Invalid channel mode %u", mode);
 429                     return 51;
 430             }
 431
 432         default:
 433             pa_log_warn("Invalid sampling freq %u", freq);
 434             return 53;
 435     }
 436 }
 437
 438 /* Run from main thread */
 439 static int setup_a2dp(struct userdata *u) {
 440     sbc_capabilities_t *cap;
 441     int i;
 442
 443     static const struct {
 444         uint32_t rate;
 445         uint8_t cap;
 446     } freq_table[] = {
 447         { 16000U, BT_SBC_SAMPLING_FREQ_16000 },
 448         { 32000U, BT_SBC_SAMPLING_FREQ_32000 },
 449         { 44100U, BT_SBC_SAMPLING_FREQ_44100 },
 450         { 48000U, BT_SBC_SAMPLING_FREQ_48000 }
 451     };
 452
 453     pa_assert(u);
 454     pa_assert(u->profile == PROFILE_A2DP);
 455
 456     cap = &u->a2dp.sbc_capabilities;
 457
 458     /* Find the lowest freq that is at least as high as the requested
 459      * sampling rate */
 460     for (i = 0; (unsigned) i < PA_ELEMENTSOF(freq_table); i++)
 461         if (freq_table[i].rate >= u->sample_spec.rate && (cap->frequency & freq_table[i].cap)) {
 462             u->sample_spec.rate = freq_table[i].rate;
 463             cap->frequency = freq_table[i].cap;
 464             break;
 465         }
 466
 467     if ((unsigned) i == PA_ELEMENTSOF(freq_table)) {
 468         for (--i; i >= 0; i--) {
 469             if (cap->frequency & freq_table[i].cap) {
 470                 u->sample_spec.rate = freq_table[i].rate;
 471                 cap->frequency = freq_table[i].cap;
 472                 break;
 473             }
 474         }
 475
 476         if (i < 0) {
 477             pa_log("Not suitable sample rate");
 478             return -1;
 479         }
 480     }
 481
 482     pa_assert((unsigned) i < PA_ELEMENTSOF(freq_table));
 483
 484     if (cap->capability.configured)
 485         return 0;
 486
 487     if (u->sample_spec.channels <= 1) {
 488         if (cap->channel_mode & BT_A2DP_CHANNEL_MODE_MONO) {
 489             cap->channel_mode = BT_A2DP_CHANNEL_MODE_MONO;
 490             u->sample_spec.channels = 1;
 491         } else
 492             u->sample_spec.channels = 2;
 493     }
 494
 495     if (u->sample_spec.channels >= 2) {
 496         u->sample_spec.channels = 2;
 497
 498         if (cap->channel_mode & BT_A2DP_CHANNEL_MODE_JOINT_STEREO)
 499             cap->channel_mode = BT_A2DP_CHANNEL_MODE_JOINT_STEREO;
 500         else if (cap->channel_mode & BT_A2DP_CHANNEL_MODE_STEREO)
 501             cap->channel_mode = BT_A2DP_CHANNEL_MODE_STEREO;
 502         else if (cap->channel_mode & BT_A2DP_CHANNEL_MODE_DUAL_CHANNEL)
 503             cap->channel_mode = BT_A2DP_CHANNEL_MODE_DUAL_CHANNEL;
 504         else if (cap->channel_mode & BT_A2DP_CHANNEL_MODE_MONO) {
 505             cap->channel_mode = BT_A2DP_CHANNEL_MODE_MONO;
 506             u->sample_spec.channels = 1;
 507         } else {
 508             pa_log("No supported channel modes");
 509             return -1;
 510         }
 511     }
 512
 513     if (cap->block_length & BT_A2DP_BLOCK_LENGTH_16)
 514         cap->block_length = BT_A2DP_BLOCK_LENGTH_16;
 515     else if (cap->block_length & BT_A2DP_BLOCK_LENGTH_12)
 516         cap->block_length = BT_A2DP_BLOCK_LENGTH_12;
 517     else if (cap->block_length & BT_A2DP_BLOCK_LENGTH_8)
 518         cap->block_length = BT_A2DP_BLOCK_LENGTH_8;
 519     else if (cap->block_length & BT_A2DP_BLOCK_LENGTH_4)
 520         cap->block_length = BT_A2DP_BLOCK_LENGTH_4;
 521     else {
 522         pa_log_error("No supported block lengths");
 523         return -1;
 524     }
 525
 526     if (cap->subbands & BT_A2DP_SUBBANDS_8)
 527         cap->subbands = BT_A2DP_SUBBANDS_8;
 528     else if (cap->subbands & BT_A2DP_SUBBANDS_4)
 529         cap->subbands = BT_A2DP_SUBBANDS_4;
 530     else {
 531         pa_log_error("No supported subbands");
 532         return -1;
 533     }
 534
 535     if (cap->allocation_method & BT_A2DP_ALLOCATION_LOUDNESS)
 536         cap->allocation_method = BT_A2DP_ALLOCATION_LOUDNESS;
 537     else if (cap->allocation_method & BT_A2DP_ALLOCATION_SNR)
 538         cap->allocation_method = BT_A2DP_ALLOCATION_SNR;
 539
 540     cap->min_bitpool = (uint8_t) PA_MAX(MIN_BITPOOL, cap->min_bitpool);
 541     cap->max_bitpool = (uint8_t) PA_MIN(a2dp_default_bitpool(cap->frequency, cap->channel_mode), cap->max_bitpool);
 542
 543     return 0;
 544 }
 545
 546 /* Run from main thread */
 547 static void setup_sbc(struct a2dp_info *a2dp) {
 548     sbc_capabilities_t *active_capabilities;
 549
 550     pa_assert(a2dp);
 551
 552     active_capabilities = &a2dp->sbc_capabilities;
 553
 554     if (a2dp->sbc_initialized)
 555         sbc_reinit(&a2dp->sbc, 0);
 556     else
 557         sbc_init(&a2dp->sbc, 0);
 558     a2dp->sbc_initialized = TRUE;
 559
 560     switch (active_capabilities->frequency) {
 561         case BT_SBC_SAMPLING_FREQ_16000:
 562             a2dp->sbc.frequency = SBC_FREQ_16000;
 563             break;
 564         case BT_SBC_SAMPLING_FREQ_32000:
 565             a2dp->sbc.frequency = SBC_FREQ_32000;
 566             break;
 567         case BT_SBC_SAMPLING_FREQ_44100:
 568             a2dp->sbc.frequency = SBC_FREQ_44100;
 569             break;
 570         case BT_SBC_SAMPLING_FREQ_48000:
 571             a2dp->sbc.frequency = SBC_FREQ_48000;
 572             break;
 573         default:
 574             pa_assert_not_reached();
 575     }
 576
 577     switch (active_capabilities->channel_mode) {
 578         case BT_A2DP_CHANNEL_MODE_MONO:
 579             a2dp->sbc.mode = SBC_MODE_MONO;
 580             break;
 581         case BT_A2DP_CHANNEL_MODE_DUAL_CHANNEL:
 582             a2dp->sbc.mode = SBC_MODE_DUAL_CHANNEL;
 583             break;
 584         case BT_A2DP_CHANNEL_MODE_STEREO:
 585             a2dp->sbc.mode = SBC_MODE_STEREO;
 586             break;
 587         case BT_A2DP_CHANNEL_MODE_JOINT_STEREO:
 588             a2dp->sbc.mode = SBC_MODE_JOINT_STEREO;
 589             break;
 590         default:
 591             pa_assert_not_reached();
 592     }
 593
 594     switch (active_capabilities->allocation_method) {
 595         case BT_A2DP_ALLOCATION_SNR:
 596             a2dp->sbc.allocation = SBC_AM_SNR;
 597             break;
 598         case BT_A2DP_ALLOCATION_LOUDNESS:
 599             a2dp->sbc.allocation = SBC_AM_LOUDNESS;
 600             break;
 601         default:
 602             pa_assert_not_reached();
 603     }
 604
 605     switch (active_capabilities->subbands) {
 606         case BT_A2DP_SUBBANDS_4:
 607             a2dp->sbc.subbands = SBC_SB_4;
 608             break;
 609         case BT_A2DP_SUBBANDS_8:
 610             a2dp->sbc.subbands = SBC_SB_8;
 611             break;
 612         default:
 613             pa_assert_not_reached();
 614     }
 615
 616     switch (active_capabilities->block_length) {
 617         case BT_A2DP_BLOCK_LENGTH_4:
 618             a2dp->sbc.blocks = SBC_BLK_4;
 619             break;
 620         case BT_A2DP_BLOCK_LENGTH_8:
 621             a2dp->sbc.blocks = SBC_BLK_8;
 622             break;
 623         case BT_A2DP_BLOCK_LENGTH_12:
 624             a2dp->sbc.blocks = SBC_BLK_12;
 625             break;
 626         case BT_A2DP_BLOCK_LENGTH_16:
 627             a2dp->sbc.blocks = SBC_BLK_16;
 628             break;
 629         default:
 630             pa_assert_not_reached();
 631     }
 632
 633     a2dp->sbc.bitpool = active_capabilities->max_bitpool;
 634     a2dp->codesize = sbc_get_codesize(&a2dp->sbc);
 635     a2dp->frame_length = sbc_get_frame_length(&a2dp->sbc);
 636 }
 637
 638 /* Run from main thread */
 639 static int set_conf(struct userdata *u) {
 640     union {
 641         struct bt_open_req open_req;
 642         struct bt_open_rsp open_rsp;
 643         struct bt_set_configuration_req setconf_req;
 644         struct bt_set_configuration_rsp setconf_rsp;
 645         bt_audio_error_t error;
 646         uint8_t buf[BT_SUGGESTED_BUFFER_SIZE];
 647     } msg;
 648
 649     memset(&msg, 0, sizeof(msg));
 650     msg.open_req.h.type = BT_REQUEST;
 651     msg.open_req.h.name = BT_OPEN;
 652     msg.open_req.h.length = sizeof(msg.open_req);
 653
 654     pa_strlcpy(msg.open_req.object, u->path, sizeof(msg.open_req.object));
 655     msg.open_req.seid = u->profile == PROFILE_A2DP ? u->a2dp.sbc_capabilities.capability.seid : BT_A2DP_SEID_RANGE + 1;
 656     msg.open_req.lock = u->profile == PROFILE_A2DP ? BT_WRITE_LOCK : BT_READ_LOCK | BT_WRITE_LOCK;
 657
 658     if (service_send(u, &msg.open_req.h) < 0)
 659         return -1;
 660
 661     if (service_expect(u, &msg.open_rsp.h, sizeof(msg), BT_OPEN, sizeof(msg.open_rsp)) < 0)
 662         return -1;
 663
 664     if (u->profile == PROFILE_A2DP ) {
 665         u->sample_spec.format = PA_SAMPLE_S16LE;
 666
 667         if (setup_a2dp(u) < 0)
 668             return -1;
 669     } else {
 670         pa_assert(u->profile == PROFILE_HSP);
 671
 672         u->sample_spec.format = PA_SAMPLE_S16LE;
 673         u->sample_spec.channels = 1;
 674         u->sample_spec.rate = 8000;
 675     }
 676
 677     memset(&msg, 0, sizeof(msg));
 678     msg.setconf_req.h.type = BT_REQUEST;
 679     msg.setconf_req.h.name = BT_SET_CONFIGURATION;
 680     msg.setconf_req.h.length = sizeof(msg.setconf_req);
 681
 682     if (u->profile == PROFILE_A2DP) {
 683         memcpy(&msg.setconf_req.codec, &u->a2dp.sbc_capabilities, sizeof(u->a2dp.sbc_capabilities));
 684     } else {
 685         msg.setconf_req.codec.transport = BT_CAPABILITIES_TRANSPORT_SCO;
 686         msg.setconf_req.codec.seid = BT_A2DP_SEID_RANGE + 1;
 687         msg.setconf_req.codec.length = sizeof(pcm_capabilities_t);
 688     }
 689     msg.setconf_req.h.length += msg.setconf_req.codec.length - sizeof(msg.setconf_req.codec);
 690
 691     if (service_send(u, &msg.setconf_req.h) < 0)
 692         return -1;
 693
 694     if (service_expect(u, &msg.setconf_rsp.h, sizeof(msg), BT_SET_CONFIGURATION, sizeof(msg.setconf_rsp)) < 0)
 695         return -1;
 696
 697     u->link_mtu = msg.setconf_rsp.link_mtu;
 698
 699     /* setup SBC encoder now we agree on parameters */
 700     if (u->profile == PROFILE_A2DP) {
 701         setup_sbc(&u->a2dp);
 702
 703         u->block_size =
 704             ((u->link_mtu - sizeof(struct rtp_header) - sizeof(struct rtp_payload))
 705             / u->a2dp.frame_length
 706             * u->a2dp.codesize);
 707
 708         pa_log_info("SBC parameters:\n\tallocation=%u\n\tsubbands=%u\n\tblocks=%u\n\tbitpool=%u\n",
 709                     u->a2dp.sbc.allocation, u->a2dp.sbc.subbands, u->a2dp.sbc.blocks, u->a2dp.sbc.bitpool);
 710     } else
 711         u->block_size = u->link_mtu;
 712
 713     return 0;
 714 }
 715
 716 /* from IO thread, except in SCO over PCM */
 717 static int start_stream_fd(struct userdata *u) {
 718     union {
 719         bt_audio_msg_header_t rsp;
 720         struct bt_start_stream_req start_req;
 721         struct bt_start_stream_rsp start_rsp;
 722         struct bt_new_stream_ind streamfd_ind;
 723         bt_audio_error_t error;
 724         uint8_t buf[BT_SUGGESTED_BUFFER_SIZE];
 725     } msg;
 726     struct pollfd *pollfd;
 727     int one;
 728
 729     pa_assert(u);
 730     pa_assert(u->rtpoll);
 731     pa_assert(!u->rtpoll_item);
 732     pa_assert(u->stream_fd < 0);
 733
 734     memset(msg.buf, 0, BT_SUGGESTED_BUFFER_SIZE);
 735     msg.start_req.h.type = BT_REQUEST;
 736     msg.start_req.h.name = BT_START_STREAM;
 737     msg.start_req.h.length = sizeof(msg.start_req);
 738
 739     if (service_send(u, &msg.start_req.h) < 0)
 740         return -1;
 741
 742     if (service_expect(u, &msg.rsp, sizeof(msg), BT_START_STREAM, sizeof(msg.start_rsp)) < 0)
 743         return -1;
 744
 745     if (service_expect(u, &msg.rsp, sizeof(msg), BT_NEW_STREAM, sizeof(msg.streamfd_ind)) < 0)
 746         return -1;
 747
 748     if ((u->stream_fd = bt_audio_service_get_data_fd(u->service_fd)) < 0) {
 749         pa_log("Failed to get stream fd from audio service.");
 750         return -1;
 751     }
 752
 753     pa_make_fd_nonblock(u->stream_fd);
 754     pa_make_socket_low_delay(u->stream_fd);
 755
 756     one = 1;
 757     if (setsockopt(u->stream_fd, SOL_SOCKET, SO_TIMESTAMP, &one, sizeof(one)) < 0)
 758         pa_log_warn("Failed to enable SO_TIMESTAMP: %s", pa_cstrerror(errno));
 759
 760     pa_log_debug("Stream properly set up, we're ready to roll!");
 761
 762     u->rtpoll_item = pa_rtpoll_item_new(u->rtpoll, PA_RTPOLL_NEVER, 1);
 763     pollfd = pa_rtpoll_item_get_pollfd(u->rtpoll_item, NULL);
 764     pollfd->fd = u->stream_fd;
 765     pollfd->events = pollfd->revents = 0;
 766
 767     u->read_index = u->write_index = 0;
 768     u->started_at = 0;
 769
 770     if (u->source)
 771         u->read_smoother = pa_smoother_new(
 772                 PA_USEC_PER_SEC,
 773                 PA_USEC_PER_SEC*2,
 774                 TRUE,
 775                 TRUE,
 776                 10,
 777                 pa_rtclock_now(),
 778                 TRUE);
 779
 780     return 0;
 781 }
 782
 783 /* from IO thread */
 784 static int stop_stream_fd(struct userdata *u) {
 785     union {
 786         bt_audio_msg_header_t rsp;
 787         struct bt_stop_stream_req start_req;
 788         struct bt_stop_stream_rsp start_rsp;
 789         bt_audio_error_t error;
 790         uint8_t buf[BT_SUGGESTED_BUFFER_SIZE];
 791     } msg;
 792     int r = 0;
 793
 794     pa_assert(u);
 795     pa_assert(u->rtpoll);
 796     pa_assert(u->rtpoll_item);
 797     pa_assert(u->stream_fd >= 0);
 798
 799     pa_rtpoll_item_free(u->rtpoll_item);
 800     u->rtpoll_item = NULL;
 801
 802     memset(msg.buf, 0, BT_SUGGESTED_BUFFER_SIZE);
 803     msg.start_req.h.type = BT_REQUEST;
 804     msg.start_req.h.name = BT_STOP_STREAM;
 805     msg.start_req.h.length = sizeof(msg.start_req);
 806
 807     if (service_send(u, &msg.start_req.h) < 0 ||
 808         service_expect(u, &msg.rsp, sizeof(msg), BT_STOP_STREAM, sizeof(msg.start_rsp)) < 0)
 809         r = -1;
 810
 811     pa_close(u->stream_fd);
 812     u->stream_fd = -1;
 813
 814     if (u->read_smoother) {
 815         pa_smoother_free(u->read_smoother);
 816         u->read_smoother = NULL;
 817     }
 818
 819     return r;
 820 }
 821
 822 /* Run from IO thread */
 823 static int sink_process_msg(pa_msgobject *o, int code, void *data, int64_t offset, pa_memchunk *chunk) {
 824     struct userdata *u = PA_SINK(o)->userdata;
 825     pa_bool_t failed = FALSE;
 826     int r;
 827
 828     pa_assert(u->sink == PA_SINK(o));
 829
 830     switch (code) {
 831
 832         case PA_SINK_MESSAGE_SET_STATE:
 833
 834             switch ((pa_sink_state_t) PA_PTR_TO_UINT(data)) {
 835
 836                 case PA_SINK_SUSPENDED:
 837                     pa_assert(PA_SINK_IS_OPENED(u->sink->thread_info.state));
 838
 839                     /* Stop the device if the source is suspended as well */
 840                     if (!u->source || u->source->state == PA_SOURCE_SUSPENDED)
 841                         /* We deliberately ignore whether stopping
 842                          * actually worked. Since the stream_fd is
 843                          * closed it doesn't really matter */
 844                         stop_stream_fd(u);
 845
 846                     break;
 847
 848                 case PA_SINK_IDLE:
 849                 case PA_SINK_RUNNING:
 850                     if (u->sink->thread_info.state != PA_SINK_SUSPENDED)
 851                         break;
 852
 853                     /* Resume the device if the source was suspended as well */
 854                     if (!u->source || u->source->state == PA_SOURCE_SUSPENDED)
 855                         if (start_stream_fd(u) < 0)
 856                             failed = TRUE;
 857                     break;
 858
 859                 case PA_SINK_UNLINKED:
 860                 case PA_SINK_INIT:
 861                 case PA_SINK_INVALID_STATE:
 862                     ;
 863             }
 864             break;
 865
 866         case PA_SINK_MESSAGE_GET_LATENCY: {
 867
 868             if (u->read_smoother) {
 869                 pa_usec_t wi, ri;
 870
 871                 ri = pa_smoother_get(u->read_smoother, pa_rtclock_now());
 872                 wi = pa_bytes_to_usec(u->write_index + u->block_size, &u->sample_spec);
 873
 874                 *((pa_usec_t*) data) = wi > ri ? wi - ri : 0;
 875             } else {
 876                 pa_usec_t ri, wi;
 877
 878                 ri = pa_rtclock_now() - u->started_at;
 879                 wi = pa_bytes_to_usec(u->write_index, &u->sample_spec);
 880
 881                 *((pa_usec_t*) data) = wi > ri ? wi - ri : 0;
 882             }
 883
 884             *((pa_usec_t*) data) += u->sink->fixed_latency;
 885             return 0;
 886         }
 887     }
 888
 889     r = pa_sink_process_msg(o, code, data, offset, chunk);
 890
 891     return (r < 0 || !failed) ? r : -1;
 892 }
 893
 894 /* Run from IO thread */
 895 static int source_process_msg(pa_msgobject *o, int code, void *data, int64_t offset, pa_memchunk *chunk) {
 896     struct userdata *u = PA_SOURCE(o)->userdata;
 897     pa_bool_t failed = FALSE;
 898     int r;
 899
 900     pa_assert(u->source == PA_SOURCE(o));
 901
 902     switch (code) {
 903
 904         case PA_SOURCE_MESSAGE_SET_STATE:
 905
 906             switch ((pa_source_state_t) PA_PTR_TO_UINT(data)) {
 907
 908                 case PA_SOURCE_SUSPENDED:
 909                     pa_assert(PA_SOURCE_IS_OPENED(u->source->thread_info.state));
 910
 911                     /* Stop the device if the sink is suspended as well */
 912                     if (!u->sink || u->sink->state == PA_SINK_SUSPENDED)
 913                         stop_stream_fd(u);
 914
 915                     if (u->read_smoother)
 916                         pa_smoother_pause(u->read_smoother, pa_rtclock_now());
 917                     break;
 918
 919                 case PA_SOURCE_IDLE:
 920                 case PA_SOURCE_RUNNING:
 921                     if (u->source->thread_info.state != PA_SOURCE_SUSPENDED)
 922                         break;
 923
 924                     /* Resume the device if the sink was suspended as well */
 925                     if (!u->sink || u->sink->thread_info.state == PA_SINK_SUSPENDED)
 926                         if (start_stream_fd(u) < 0)
 927                             failed = TRUE;
 928
 929                     /* We don't resume the smoother here. Instead we
 930                      * wait until the first packet arrives */
 931                     break;
 932
 933                 case PA_SOURCE_UNLINKED:
 934                 case PA_SOURCE_INIT:
 935                 case PA_SOURCE_INVALID_STATE:
 936                     ;
 937             }
 938             break;
 939
 940         case PA_SOURCE_MESSAGE_GET_LATENCY: {
 941             pa_usec_t wi, ri;
 942
 943             wi = pa_smoother_get(u->read_smoother, pa_rtclock_now());
 944             ri = pa_bytes_to_usec(u->read_index, &u->sample_spec);
 945
 946             *((pa_usec_t*) data) = (wi > ri ? wi - ri : 0) + u->source->fixed_latency;
 947             return 0;
 948         }
 949
 950     }
 951
 952     r = pa_source_process_msg(o, code, data, offset, chunk);
 953
 954     return (r < 0 || !failed) ? r : -1;
 955 }
 956
 957 /* Run from IO thread */
 958 static int hsp_process_render(struct userdata *u) {
 959     int ret = 0;
 960
 961     pa_assert(u);
 962     pa_assert(u->profile == PROFILE_HSP);
 963     pa_assert(u->sink);
 964
 965     /* First, render some data */
 966     if (!u->write_memchunk.memblock)
 967         pa_sink_render_full(u->sink, u->block_size, &u->write_memchunk);
 968
 969     pa_assert(u->write_memchunk.length == u->block_size);
 970
 971     for (;;) {
 972         ssize_t l;
 973         const void *p;
 974
 975         /* Now write that data to the socket. The socket is of type
 976          * SEQPACKET, and we generated the data of the MTU size, so this
 977          * should just work. */
 978
 979         p = (const uint8_t*) pa_memblock_acquire(u->write_memchunk.memblock) + u->write_memchunk.index;
 980         l = pa_write(u->stream_fd, p, u->write_memchunk.length, &u->stream_write_type);
 981         pa_memblock_release(u->write_memchunk.memblock);
 982
 983         pa_assert(l != 0);
 984
 985         if (l < 0) {
 986
 987             if (errno == EINTR)
 988                 /* Retry right away if we got interrupted */
 989                 continue;
 990
 991             else if (errno == EAGAIN)
 992                 /* Hmm, apparently the socket was not writable, give up for now */
 993                 break;
 994
 995             pa_log_error("Failed to write data to SCO socket: %s", pa_cstrerror(errno));
 996             ret = -1;
 997             break;
 998         }
 999
1000         pa_assert((size_t) l <= u->write_memchunk.length);
1001
1002         if ((size_t) l != u->write_memchunk.length) {
1003             pa_log_error("Wrote memory block to socket only partially! %llu written, wanted to write %llu.",
1004                         (unsigned long long) l,
1005                         (unsigned long long) u->write_memchunk.length);
1006             ret = -1;
1007             break;
1008         }
1009
1010         u->write_index += (uint64_t) u->write_memchunk.length;
1011         pa_memblock_unref(u->write_memchunk.memblock);
1012         pa_memchunk_reset(&u->write_memchunk);
1013
1014         ret = 1;
1015         break;
1016     }
1017
1018     return ret;
1019 }
1020
1021 /* Run from IO thread */
1022 static int hsp_process_push(struct userdata *u) {
1023     int ret = 0;
1024     pa_memchunk memchunk;
1025
1026     pa_assert(u);
1027     pa_assert(u->profile == PROFILE_HSP);
1028     pa_assert(u->source);
1029     pa_assert(u->read_smoother);
1030
1031     memchunk.memblock = pa_memblock_new(u->core->mempool, u->block_size);
1032     memchunk.index = memchunk.length = 0;
1033
1034     for (;;) {
1035         ssize_t l;
1036         void *p;
1037         struct msghdr m;
1038         struct cmsghdr *cm;
1039         uint8_t aux[1024];
1040         struct iovec iov;
1041         pa_bool_t found_tstamp = FALSE;
1042         pa_usec_t tstamp;
1043
1044         memset(&m, 0, sizeof(m));
1045         memset(&aux, 0, sizeof(aux));
1046         memset(&iov, 0, sizeof(iov));
1047
1048         m.msg_iov = &iov;
1049         m.msg_iovlen = 1;
1050         m.msg_control = aux;
1051         m.msg_controllen = sizeof(aux);
1052
1053         p = pa_memblock_acquire(memchunk.memblock);
1054         iov.iov_base = p;
1055         iov.iov_len = pa_memblock_get_length(memchunk.memblock);
1056         l = recvmsg(u->stream_fd, &m, 0);
1057         pa_memblock_release(memchunk.memblock);
1058
1059         if (l <= 0) {
1060
1061             if (l < 0 && errno == EINTR)
1062                 /* Retry right away if we got interrupted */
1063                 continue;
1064
1065             else if (l < 0 && errno == EAGAIN)
1066                 /* Hmm, apparently the socket was not readable, give up for now. */
1067                 break;
1068
1069             pa_log_error("Failed to read data from SCO socket: %s", l < 0 ? pa_cstrerror(errno) : "EOF");
1070             ret = -1;
1071             break;
1072         }
1073
1074         pa_assert((size_t) l <= pa_memblock_get_length(memchunk.memblock));
1075
1076         memchunk.length = (size_t) l;
1077         u->read_index += (uint64_t) l;
1078
1079         for (cm = CMSG_FIRSTHDR(&m); cm; cm = CMSG_NXTHDR(&m, cm))
1080             if (cm->cmsg_level == SOL_SOCKET && cm->cmsg_type == SO_TIMESTAMP) {
1081                 struct timeval *tv = (struct timeval*) CMSG_DATA(cm);
1082                 pa_rtclock_from_wallclock(tv);
1083                 tstamp = pa_timeval_load(tv);
1084                 found_tstamp = TRUE;
1085                 break;
1086             }
1087
1088         if (!found_tstamp) {
1089             pa_log_warn("Couldn't find SO_TIMESTAMP data in auxiliary recvmsg() data!");
1090             tstamp = pa_rtclock_now();
1091         }
1092
1093         pa_smoother_put(u->read_smoother, tstamp, pa_bytes_to_usec(u->read_index, &u->sample_spec));
1094         pa_smoother_resume(u->read_smoother, tstamp, TRUE);
1095
1096         pa_source_post(u->source, &memchunk);
1097
1098         ret = 1;
1099         break;
1100     }
1101
1102     pa_memblock_unref(memchunk.memblock);
1103
1104     return ret;
1105 }
1106
1107 /* Run from IO thread */
1108 static void a2dp_prepare_buffer(struct userdata *u) {
1109     pa_assert(u);
1110
1111     if (u->a2dp.buffer_size >= u->link_mtu)
1112         return;
1113
1114     u->a2dp.buffer_size = 2 * u->link_mtu;
1115     pa_xfree(u->a2dp.buffer);
1116     u->a2dp.buffer = pa_xmalloc(u->a2dp.buffer_size);
1117 }
1118
1119 /* Run from IO thread */
1120 static int a2dp_process_render(struct userdata *u) {
1121     struct a2dp_info *a2dp;
1122     struct rtp_header *header;
1123     struct rtp_payload *payload;
1124     size_t nbytes;
1125     void *d;
1126     const void *p;
1127     size_t to_write, to_encode;
1128     unsigned frame_count;
1129     int ret = 0;
1130
1131     pa_assert(u);
1132     pa_assert(u->profile == PROFILE_A2DP);
1133     pa_assert(u->sink);
1134
1135     /* First, render some data */
1136     if (!u->write_memchunk.memblock)
1137         pa_sink_render_full(u->sink, u->block_size, &u->write_memchunk);
1138
1139     pa_assert(u->write_memchunk.length == u->block_size);
1140
1141     a2dp_prepare_buffer(u);
1142
1143     a2dp = &u->a2dp;
1144     header = a2dp->buffer;
1145     payload = (struct rtp_payload*) ((uint8_t*) a2dp->buffer + sizeof(*header));
1146
1147     frame_count = 0;
1148
1149     /* Try to create a packet of the full MTU */
1150
1151     p = (const uint8_t*) pa_memblock_acquire(u->write_memchunk.memblock) + u->write_memchunk.index;
1152     to_encode = u->write_memchunk.length;
1153
1154     d = (uint8_t*) a2dp->buffer + sizeof(*header) + sizeof(*payload);
1155     to_write = a2dp->buffer_size - sizeof(*header) - sizeof(*payload);
1156
1157     while (PA_LIKELY(to_encode > 0 && to_write > 0)) {
1158         size_t written;
1159         ssize_t encoded;
1160
1161         encoded = sbc_encode(&a2dp->sbc,
1162                              p, to_encode,
1163                              d, to_write,
1164                              &written);
1165
1166         if (PA_UNLIKELY(encoded <= 0)) {
1167             pa_log_error("SBC encoding error (%li)", (long) encoded);
1168             pa_memblock_release(u->write_memchunk.memblock);
1169             return -1;
1170         }
1171
1172 /*         pa_log_debug("SBC: encoded: %lu; written: %lu", (unsigned long) encoded, (unsigned long) written); */
1173 /*         pa_log_debug("SBC: codesize: %lu; frame_length: %lu", (unsigned long) a2dp->codesize, (unsigned long) a2dp->frame_length); */
1174
1175         pa_assert_fp((size_t) encoded <= to_encode);
1176         pa_assert_fp((size_t) encoded == a2dp->codesize);
1177
1178         pa_assert_fp((size_t) written <= to_write);
1179         pa_assert_fp((size_t) written == a2dp->frame_length);
1180
1181         p = (const uint8_t*) p + encoded;
1182         to_encode -= encoded;
1183
1184         d = (uint8_t*) d + written;
1185         to_write -= written;
1186
1187         frame_count++;
1188     }
1189
1190     pa_memblock_release(u->write_memchunk.memblock);
1191
1192     pa_assert(to_encode == 0);
1193
1194     PA_ONCE_BEGIN {
1195         pa_log_debug("Using SBC encoder implementation: %s", pa_strnull(sbc_get_implementation_info(&a2dp->sbc)));
1196     } PA_ONCE_END;
1197
1198     /* write it to the fifo */
1199     memset(a2dp->buffer, 0, sizeof(*header) + sizeof(*payload));
1200     header->v = 2;
1201     header->pt = 1;
1202     header->sequence_number = htons(a2dp->seq_num++);
1203     header->timestamp = htonl(u->write_index / pa_frame_size(&u->sample_spec));
1204     header->ssrc = htonl(1);
1205     payload->frame_count = frame_count;
1206
1207     nbytes = (uint8_t*) d - (uint8_t*) a2dp->buffer;
1208
1209     for (;;) {
1210         ssize_t l;
1211
1212         l = pa_write(u->stream_fd, a2dp->buffer, nbytes, &u->stream_write_type);
1213
1214         pa_assert(l != 0);
1215
1216         if (l < 0) {
1217
1218             if (errno == EINTR)
1219                 /* Retry right away if we got interrupted */
1220                 continue;
1221
1222             else if (errno == EAGAIN)
1223                 /* Hmm, apparently the socket was not writable, give up for now */
1224                 break;
1225
1226             pa_log_error("Failed to write data to socket: %s", pa_cstrerror(errno));
1227             ret  = -1;
1228             break;
1229         }
1230
1231         pa_assert((size_t) l <= nbytes);
1232
1233         if ((size_t) l != nbytes) {
1234             pa_log_warn("Wrote memory block to socket only partially! %llu written, wanted to write %llu.",
1235                         (unsigned long long) l,
1236                         (unsigned long long) nbytes);
1237             ret = -1;
1238             break;
1239         }
1240
1241         u->write_index += (uint64_t) u->write_memchunk.length;
1242         pa_memblock_unref(u->write_memchunk.memblock);
1243         pa_memchunk_reset(&u->write_memchunk);
1244
1245         ret = 1;
1246
1247         break;
1248     }
1249
1250     return ret;
1251 }
1252
1253 static void thread_func(void *userdata) {
1254     struct userdata *u = userdata;
1255     unsigned do_write = 0;
1256     pa_bool_t writable = FALSE;
1257
1258     pa_assert(u);
1259
1260     pa_log_debug("IO Thread starting up");
1261
1262     if (u->core->realtime_scheduling)
1263         pa_make_realtime(u->core->realtime_priority);
1264
1265     if (start_stream_fd(u) < 0)
1266         goto fail;
1267
1268     pa_thread_mq_install(&u->thread_mq);
1269     pa_rtpoll_install(u->rtpoll);
1270
1271     for (;;) {
1272         struct pollfd *pollfd;
1273         int ret;
1274         pa_bool_t disable_timer = TRUE;
1275
1276         pollfd = u->rtpoll_item ? pa_rtpoll_item_get_pollfd(u->rtpoll_item, NULL) : NULL;
1277
1278         if (u->source && PA_SOURCE_IS_LINKED(u->source->thread_info.state)) {
1279
1280             /* We should send two blocks to the device before we expect
1281              * a response. */
1282
1283             if (u->write_index == 0 && u->read_index <= 0)
1284                 do_write = 2;
1285
1286             if (pollfd && (pollfd->revents & POLLIN)) {
1287                 int n_read;
1288
1289                 if ((n_read = hsp_process_push(u)) < 0)
1290                     goto fail;
1291
1292                 /* We just read something, so we are supposed to write something, too */
1293                 do_write += n_read;
1294             }
1295         }
1296
1297         if (u->sink && PA_SINK_IS_LINKED(u->sink->thread_info.state)) {
1298
1299             if (u->sink->thread_info.rewind_requested)
1300                 pa_sink_process_rewind(u->sink, 0);
1301
1302             if (pollfd) {
1303                 if (pollfd->revents & POLLOUT)
1304                     writable = TRUE;
1305
1306                 if ((!u->source || !PA_SOURCE_IS_LINKED(u->source->thread_info.state)) && do_write <= 0 && writable) {
1307                     pa_usec_t time_passed;
1308                     pa_usec_t audio_sent;
1309
1310                     /* Hmm, there is no input stream we could synchronize
1311                      * to. So let's do things by time */
1312
1313                     time_passed = pa_rtclock_now() - u->started_at;
1314                     audio_sent = pa_bytes_to_usec(u->write_index, &u->sample_spec);
1315
1316                     if (audio_sent <= time_passed) {
1317                         pa_usec_t audio_to_send = time_passed - audio_sent;
1318
1319                         /* Never try to catch up for more than 100ms */
1320                         if (u->write_index > 0 && audio_to_send > MAX_PLAYBACK_CATCH_UP_USEC) {
1321                             pa_usec_t skip_usec;
1322                             uint64_t skip_bytes;
1323                             pa_memchunk tmp;
1324
1325                             skip_usec = audio_to_send - MAX_PLAYBACK_CATCH_UP_USEC;
1326                             skip_bytes = pa_usec_to_bytes(skip_usec, &u->sample_spec);
1327
1328                             pa_log_warn("Skipping %llu us (= %llu bytes) in audio stream",
1329                                         (unsigned long long) skip_usec,
1330                                         (unsigned long long) skip_bytes);
1331
1332                             pa_sink_render_full(u->sink, skip_bytes, &tmp);
1333                             pa_memblock_unref(tmp.memblock);
1334                             u->write_index += skip_bytes;
1335                         }
1336
1337                         do_write = 1;
1338                     }
1339                 }
1340
1341                 if (writable && do_write > 0) {
1342                     int n_written;
1343
1344                     if (u->write_index <= 0)
1345                         u->started_at = pa_rtclock_now();
1346
1347                     if (u->profile == PROFILE_A2DP) {
1348                         if ((n_written = a2dp_process_render(u)) < 0)
1349                             goto fail;
1350                     } else {
1351                         if ((n_written = hsp_process_render(u)) < 0)
1352                             goto fail;
1353                     }
1354
1355                     do_write -= n_written;
1356                     writable = FALSE;
1357                 }
1358
1359                 if ((!u->source || !PA_SOURCE_IS_LINKED(u->source->thread_info.state)) && do_write <= 0) {
1360                     pa_usec_t time_passed, next_write_at, sleep_for;
1361
1362                     /* Hmm, there is no input stream we could synchronize
1363                      * to. So let's estimate when we need to wake up the latest */
1364
1365                     time_passed = pa_rtclock_now() - u->started_at;
1366                     next_write_at = pa_bytes_to_usec(u->write_index, &u->sample_spec);
1367                     sleep_for = time_passed < next_write_at ? next_write_at - time_passed : 0;
1368
1369 /*                 pa_log("Sleeping for %lu; time passed %lu, next write at %lu", (unsigned long) sleep_for, (unsigned long) time_passed, (unsigned long)next_write_at); */
1370
1371                     pa_rtpoll_set_timer_relative(u->rtpoll, sleep_for);
1372                     disable_timer = FALSE;
1373                 }
1374             }
1375         }
1376
1377         if (disable_timer)
1378             pa_rtpoll_set_timer_disabled(u->rtpoll);
1379
1380         /* Hmm, nothing to do. Let's sleep */
1381         if (pollfd)
1382             pollfd->events = (short) (((u->sink && PA_SINK_IS_LINKED(u->sink->thread_info.state) && !writable) ? POLLOUT : 0) |
1383                                       (u->source && PA_SOURCE_IS_LINKED(u->source->thread_info.state) ? POLLIN : 0));
1384
1385         if ((ret = pa_rtpoll_run(u->rtpoll, TRUE)) < 0)
1386             goto fail;
1387
1388         if (ret == 0)
1389             goto finish;
1390
1391         pollfd = u->rtpoll_item ? pa_rtpoll_item_get_pollfd(u->rtpoll_item, NULL) : NULL;
1392
1393         if (pollfd && (pollfd->revents & ~(POLLOUT|POLLIN))) {
1394             pa_log_info("FD error: %s%s%s%s",
1395                         pollfd->revents & POLLERR ? "POLLERR " :"",
1396                         pollfd->revents & POLLHUP ? "POLLHUP " :"",
1397                         pollfd->revents & POLLPRI ? "POLLPRI " :"",
1398                         pollfd->revents & POLLNVAL ? "POLLNVAL " :"");
1399             goto fail;
1400         }
1401     }
1402
1403 fail:
1404     /* If this was no regular exit from the loop we have to continue processing messages until we receive PA_MESSAGE_SHUTDOWN */
1405     pa_log_debug("IO thread failed");
1406     pa_asyncmsgq_post(u->thread_mq.outq, PA_MSGOBJECT(u->core), PA_CORE_MESSAGE_UNLOAD_MODULE, u->module, 0, NULL, NULL);
1407     pa_asyncmsgq_wait_for(u->thread_mq.inq, PA_MESSAGE_SHUTDOWN);
1408
1409 finish:
1410     pa_log_debug("IO thread shutting down");
1411 }
1412
1413 /* Run from main thread */
1414 static DBusHandlerResult filter_cb(DBusConnection *bus, DBusMessage *m, void *userdata) {
1415     DBusError err;
1416     struct userdata *u;
1417
1418     pa_assert(bus);
1419     pa_assert(m);
1420     pa_assert_se(u = userdata);
1421
1422     dbus_error_init(&err);
1423
1424     pa_log_debug("dbus: interface=%s, path=%s, member=%s\n",
1425                  dbus_message_get_interface(m),
1426                  dbus_message_get_path(m),
1427                  dbus_message_get_member(m));
1428
1429    if (!dbus_message_has_path(m, u->path))
1430        goto fail;
1431
1432     if (dbus_message_is_signal(m, "org.bluez.Headset", "SpeakerGainChanged") ||
1433         dbus_message_is_signal(m, "org.bluez.Headset", "MicrophoneGainChanged")) {
1434
1435         dbus_uint16_t gain;
1436         pa_cvolume v;
1437
1438         if (!dbus_message_get_args(m, &err, DBUS_TYPE_UINT16, &gain, DBUS_TYPE_INVALID) || gain > 15) {
1439             pa_log("Failed to parse org.bluez.Headset.{Speaker|Microphone}GainChanged: %s", err.message);
1440             goto fail;
1441         }
1442
1443         if (u->profile == PROFILE_HSP) {
1444             if (u->sink && dbus_message_is_signal(m, "org.bluez.Headset", "SpeakerGainChanged")) {
1445
1446                 pa_cvolume_set(&v, u->sample_spec.channels, (pa_volume_t) (gain * PA_VOLUME_NORM / 15));
1447                 pa_sink_volume_changed(u->sink, &v, TRUE);
1448
1449             } else if (u->source && dbus_message_is_signal(m, "org.bluez.Headset", "MicrophoneGainChanged")) {
1450
1451                 pa_cvolume_set(&v, u->sample_spec.channels, (pa_volume_t) (gain * PA_VOLUME_NORM / 15));
1452                 pa_source_volume_changed(u->source, &v, TRUE);
1453             }
1454         }
1455     }
1456
1457 fail:
1458     dbus_error_free(&err);
1459
1460     return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
1461 }
1462
1463 /* Run from main thread */
1464 static void sink_set_volume_cb(pa_sink *s) {
1465     struct userdata *u = s->userdata;
1466     DBusMessage *m;
1467     dbus_uint16_t gain;
1468
1469     pa_assert(u);
1470
1471     if (u->profile != PROFILE_HSP)
1472         return;
1473
1474     gain = (pa_cvolume_max(&s->virtual_volume) * 15) / PA_VOLUME_NORM;
1475
1476     if (gain > 15)
1477         gain = 15;
1478
1479     pa_cvolume_set(&s->virtual_volume, u->sample_spec.channels, (pa_volume_t) (gain * PA_VOLUME_NORM / 15));
1480
1481     pa_assert_se(m = dbus_message_new_method_call("org.bluez", u->path, "org.bluez.Headset", "SetSpeakerGain"));
1482     pa_assert_se(dbus_message_append_args(m, DBUS_TYPE_UINT16, &gain, DBUS_TYPE_INVALID));
1483     pa_assert_se(dbus_connection_send(pa_dbus_connection_get(u->connection), m, NULL));
1484     dbus_message_unref(m);
1485 }
1486
1487 /* Run from main thread */
1488 static void source_set_volume_cb(pa_source *s) {
1489     struct userdata *u = s->userdata;
1490     DBusMessage *m;
1491     dbus_uint16_t gain;
1492
1493     pa_assert(u);
1494
1495     if (u->profile != PROFILE_HSP)
1496         return;
1497
1498     gain = (pa_cvolume_max(&s->virtual_volume) * 15) / PA_VOLUME_NORM;
1499
1500     if (gain > 15)
1501         gain = 15;
1502
1503     pa_cvolume_set(&s->virtual_volume, u->sample_spec.channels, (pa_volume_t) (gain * PA_VOLUME_NORM / 15));
1504
1505     pa_assert_se(m = dbus_message_new_method_call("org.bluez", u->path, "org.bluez.Headset", "SetMicrophoneGain"));
1506     pa_assert_se(dbus_message_append_args(m, DBUS_TYPE_UINT16, &gain, DBUS_TYPE_INVALID));
1507     pa_assert_se(dbus_connection_send(pa_dbus_connection_get(u->connection), m, NULL));
1508     dbus_message_unref(m);
1509 }
1510
1511 /* Run from main thread */
1512 static char *get_name(const char *type, pa_modargs *ma, const char *device_id, pa_bool_t *namereg_fail) {
1513     char *t;
1514     const char *n;
1515
1516     pa_assert(type);
1517     pa_assert(ma);
1518     pa_assert(device_id);
1519     pa_assert(namereg_fail);
1520
1521     t = pa_sprintf_malloc("%s_name", type);
1522     n = pa_modargs_get_value(ma, t, NULL);
1523     pa_xfree(t);
1524
1525     if (n) {
1526         *namereg_fail = TRUE;
1527         return pa_xstrdup(n);
1528     }
1529
1530     if ((n = pa_modargs_get_value(ma, "name", NULL)))
1531         *namereg_fail = TRUE;
1532     else {
1533         n = device_id;
1534         *namereg_fail = FALSE;
1535     }
1536
1537     return pa_sprintf_malloc("bluez_%s.%s", type, n);
1538 }
1539
1540 #ifdef NOKIA
1541
1542 static void sco_over_pcm_state_update(struct userdata *u) {
1543     pa_assert(u);
1544     pa_assert(USE_SCO_OVER_PCM(u));
1545
1546     if (PA_SINK_IS_OPENED(pa_sink_get_state(u->hsp.sco_sink)) ||
1547         PA_SOURCE_IS_OPENED(pa_source_get_state(u->hsp.sco_source))) {
1548
1549         if (u->service_fd >= 0)
1550             return;
1551
1552         pa_log_debug("Resuming SCO over PCM");
1553         if ((init_bt(u) < 0) || (init_profile(u) < 0))
1554             pa_log("Can't resume SCO over PCM");
1555
1556         start_stream_fd(u);
1557     } else {
1558
1559         if (u->service_fd < 0)
1560             return;
1561
1562         stop_stream_fd(u);
1563
1564         pa_log_debug("Closing SCO over PCM");
1565         pa_close(u->service_fd);
1566         u->service_fd = -1;
1567     }
1568 }
1569
1570 static pa_hook_result_t sink_state_changed_cb(pa_core *c, pa_sink *s, struct userdata *u) {
1571     pa_assert(c);
1572     pa_sink_assert_ref(s);
1573     pa_assert(u);
1574
1575     if (s != u->hsp.sco_sink)
1576         return PA_HOOK_OK;
1577
1578     sco_over_pcm_state_update(u);
1579
1580     return PA_HOOK_OK;
1581 }
1582
1583 static pa_hook_result_t source_state_changed_cb(pa_core *c, pa_source *s, struct userdata *u) {
1584     pa_assert(c);
1585     pa_source_assert_ref(s);
1586     pa_assert(u);
1587
1588     if (s != u->hsp.sco_source)
1589         return PA_HOOK_OK;
1590
1591     sco_over_pcm_state_update(u);
1592
1593     return PA_HOOK_OK;
1594 }
1595
1596 #endif
1597
1598 /* Run from main thread */
1599 static int add_sink(struct userdata *u) {
1600
1601 #ifdef NOKIA
1602     if (USE_SCO_OVER_PCM(u)) {
1603         pa_proplist *p;
1604
1605         u->sink = u->hsp.sco_sink;
1606         p = pa_proplist_new();
1607         pa_proplist_sets(p, "bluetooth.protocol", "sco");
1608         pa_proplist_update(u->sink->proplist, PA_UPDATE_MERGE, p);
1609         pa_proplist_free(p);
1610
1611         if (!u->hsp.sink_state_changed_slot)
1612             u->hsp.sink_state_changed_slot = pa_hook_connect(&u->core->hooks[PA_CORE_HOOK_SINK_STATE_CHANGED], PA_HOOK_NORMAL, (pa_hook_cb_t) sink_state_changed_cb, u);
1613
1614     } else
1615 #endif
1616
1617     {
1618         pa_sink_new_data data;
1619         pa_bool_t b;
1620
1621         pa_sink_new_data_init(&data);
1622         data.driver = __FILE__;
1623         data.module = u->module;
1624         pa_sink_new_data_set_sample_spec(&data, &u->sample_spec);
1625         pa_proplist_sets(data.proplist, "bluetooth.protocol", u->profile == PROFILE_A2DP ? "a2dp" : "sco");
1626         if (u->profile == PROFILE_HSP)
1627             pa_proplist_sets(data.proplist, PA_PROP_DEVICE_INTENDED_ROLES, "phone");
1628         data.card = u->card;
1629         data.name = get_name("sink", u->modargs, u->address, &b);
1630         data.namereg_fail = b;
1631
1632         if (pa_modargs_get_proplist(u->modargs, "sink_properties", data.proplist, PA_UPDATE_REPLACE) < 0) {
1633             pa_log("Invalid properties");
1634             pa_sink_new_data_done(&data);
1635             return -1;
1636         }
1637
1638         u->sink = pa_sink_new(u->core, &data, PA_SINK_HARDWARE|PA_SINK_LATENCY | (u->profile == PROFILE_HSP ? PA_SINK_HW_VOLUME_CTRL : 0));
1639         pa_sink_new_data_done(&data);
1640
1641         if (!u->sink) {
1642             pa_log_error("Failed to create sink");
1643             return -1;
1644         }
1645
1646         u->sink->userdata = u;
1647         u->sink->parent.process_msg = sink_process_msg;
1648
1649         pa_sink_set_max_request(u->sink, u->block_size);
1650         pa_sink_set_fixed_latency(u->sink,
1651                                   (u->profile == PROFILE_A2DP ? FIXED_LATENCY_PLAYBACK_A2DP : FIXED_LATENCY_PLAYBACK_HSP) +
1652                                   pa_bytes_to_usec(u->block_size, &u->sample_spec));
1653     }
1654
1655     if (u->profile == PROFILE_HSP) {
1656         u->sink->set_volume = sink_set_volume_cb;
1657         u->sink->n_volume_steps = 16;
1658     }
1659
1660     return 0;
1661 }
1662
1663 /* Run from main thread */
1664 static int add_source(struct userdata *u) {
1665
1666 #ifdef NOKIA
1667     if (USE_SCO_OVER_PCM(u)) {
1668         u->source = u->hsp.sco_source;
1669         pa_proplist_sets(u->source->proplist, "bluetooth.protocol", "hsp");
1670
1671         if (!u->hsp.source_state_changed_slot)
1672             u->hsp.source_state_changed_slot = pa_hook_connect(&u->core->hooks[PA_CORE_HOOK_SOURCE_STATE_CHANGED], PA_HOOK_NORMAL, (pa_hook_cb_t) source_state_changed_cb, u);
1673
1674     } else
1675 #endif
1676
1677     {
1678         pa_source_new_data data;
1679         pa_bool_t b;
1680
1681         pa_source_new_data_init(&data);
1682         data.driver = __FILE__;
1683         data.module = u->module;
1684         pa_source_new_data_set_sample_spec(&data, &u->sample_spec);
1685         pa_proplist_sets(data.proplist, "bluetooth.protocol", u->profile == PROFILE_A2DP ? "a2dp" : "hsp");
1686         if (u->profile == PROFILE_HSP)
1687             pa_proplist_sets(data.proplist, PA_PROP_DEVICE_INTENDED_ROLES, "phone");
1688         data.card = u->card;
1689         data.name = get_name("source", u->modargs, u->address, &b);
1690         data.namereg_fail = b;
1691
1692         if (pa_modargs_get_proplist(u->modargs, "source_properties", data.proplist, PA_UPDATE_REPLACE) < 0) {
1693             pa_log("Invalid properties");
1694             pa_source_new_data_done(&data);
1695             return -1;
1696         }
1697
1698         u->source = pa_source_new(u->core, &data, PA_SOURCE_HARDWARE|PA_SOURCE_LATENCY | (u->profile == PROFILE_HSP ? PA_SOURCE_HW_VOLUME_CTRL : 0));
1699         pa_source_new_data_done(&data);
1700
1701         if (!u->source) {
1702             pa_log_error("Failed to create source");
1703             return -1;
1704         }
1705
1706         u->source->userdata = u;
1707         u->source->parent.process_msg = source_process_msg;
1708
1709         pa_source_set_fixed_latency(u->source,
1710                                     (/* u->profile == PROFILE_A2DP ? FIXED_LATENCY_RECORD_A2DP : */ FIXED_LATENCY_RECORD_HSP) +
1711                                     pa_bytes_to_usec(u->block_size, &u->sample_spec));
1712     }
1713
1714     if (u->profile == PROFILE_HSP) {
1715         pa_proplist_sets(u->source->proplist, "bluetooth.nrec", (u->hsp.pcm_capabilities.flags & BT_PCM_FLAG_NREC) ? "1" : "0");
1716         u->source->set_volume = source_set_volume_cb;
1717         u->source->n_volume_steps = 16;
1718     }
1719
1720     return 0;
1721 }
1722
1723 /* Run from main thread */
1724 static void shutdown_bt(struct userdata *u) {
1725     pa_assert(u);
1726
1727     if (u->stream_fd >= 0) {
1728         pa_close(u->stream_fd);
1729         u->stream_fd = -1;
1730
1731         u->stream_write_type = 0;
1732     }
1733
1734     if (u->service_fd >= 0) {
1735         pa_close(u->service_fd);
1736         u->service_fd = -1;
1737         u->service_write_type = u->service_write_type = 0;
1738     }
1739
1740     if (u->write_memchunk.memblock) {
1741         pa_memblock_unref(u->write_memchunk.memblock);
1742         pa_memchunk_reset(&u->write_memchunk);
1743     }
1744 }
1745
1746 /* Run from main thread */
1747 static int init_bt(struct userdata *u) {
1748     pa_assert(u);
1749
1750     shutdown_bt(u);
1751
1752     u->stream_write_type = 0;
1753     u->service_write_type = u->service_write_type = 0;
1754
1755     if ((u->service_fd = bt_audio_service_open()) < 0) {
1756         pa_log_error("Couldn't connect to bluetooth audio service");
1757         return -1;
1758     }
1759
1760     pa_log_debug("Connected to the bluetooth audio service");
1761
1762     return 0;
1763 }
1764
1765 /* Run from main thread */
1766 static int setup_bt(struct userdata *u) {
1767     pa_assert(u);
1768
1769     if (get_caps(u, 0) < 0)
1770         return -1;
1771
1772     pa_log_debug("Got device capabilities");
1773
1774     if (set_conf(u) < 0)
1775         return -1;
1776
1777     pa_log_debug("Connection to the device configured");
1778
1779 #ifdef NOKIA
1780     if (USE_SCO_OVER_PCM(u)) {
1781         pa_log_debug("Configured to use SCO over PCM");
1782         return 0;
1783     }
1784 #endif
1785
1786     pa_log_debug("Got the stream socket");
1787
1788     return 0;
1789 }
1790
1791 /* Run from main thread */
1792 static int init_profile(struct userdata *u) {
1793     int r = 0;
1794     pa_assert(u);
1795     pa_assert(u->profile != PROFILE_OFF);
1796
1797     if (setup_bt(u) < 0)
1798         return -1;
1799
1800     if (u->profile == PROFILE_A2DP ||
1801         u->profile == PROFILE_HSP)
1802         if (add_sink(u) < 0)
1803             r = -1;
1804
1805     if (u->profile == PROFILE_HSP)
1806         if (add_source(u) < 0)
1807             r = -1;
1808
1809     return r;
1810 }
1811
1812 /* Run from main thread */
1813 static void stop_thread(struct userdata *u) {
1814     pa_assert(u);
1815
1816     if (u->thread) {
1817         pa_asyncmsgq_send(u->thread_mq.inq, NULL, PA_MESSAGE_SHUTDOWN, NULL, 0, NULL);
1818         pa_thread_free(u->thread);
1819         u->thread = NULL;
1820     }
1821
1822     if (u->rtpoll_item) {
1823         pa_rtpoll_item_free(u->rtpoll_item);
1824         u->rtpoll_item = NULL;
1825     }
1826
1827     if (u->hsp.sink_state_changed_slot) {
1828         pa_hook_slot_free(u->hsp.sink_state_changed_slot);
1829         u->hsp.sink_state_changed_slot = NULL;
1830     }
1831
1832     if (u->hsp.source_state_changed_slot) {
1833         pa_hook_slot_free(u->hsp.source_state_changed_slot);
1834         u->hsp.source_state_changed_slot = NULL;
1835     }
1836
1837     if (u->sink) {
1838         pa_sink_unref(u->sink);
1839         u->sink = NULL;
1840     }
1841
1842     if (u->source) {
1843         pa_source_unref(u->source);
1844         u->source = NULL;
1845     }
1846
1847     if (u->rtpoll) {
1848         pa_thread_mq_done(&u->thread_mq);
1849
1850         pa_rtpoll_free(u->rtpoll);
1851         u->rtpoll = NULL;
1852     }
1853
1854     if (u->read_smoother) {
1855         pa_smoother_free(u->read_smoother);
1856         u->read_smoother = NULL;
1857     }
1858 }
1859
1860 /* Run from main thread */
1861 static int start_thread(struct userdata *u) {
1862     pa_assert(u);
1863     pa_assert(!u->thread);
1864     pa_assert(!u->rtpoll);
1865     pa_assert(!u->rtpoll_item);
1866
1867     u->rtpoll = pa_rtpoll_new();
1868     pa_thread_mq_init(&u->thread_mq, u->core->mainloop, u->rtpoll);
1869
1870 #ifdef NOKIA
1871     if (USE_SCO_OVER_PCM(u)) {
1872         if (start_stream_fd(u) < 0)
1873             return -1;
1874
1875         pa_sink_ref(u->sink);
1876         pa_source_ref(u->source);
1877         /* FIXME: monitor stream_fd error */
1878         return 0;
1879     }
1880 #endif
1881
1882     if (!(u->thread = pa_thread_new(thread_func, u))) {
1883         pa_log_error("Failed to create IO thread");
1884         stop_thread(u);
1885         return -1;
1886     }
1887
1888     if (u->sink) {
1889         pa_sink_set_asyncmsgq(u->sink, u->thread_mq.inq);
1890         pa_sink_set_rtpoll(u->sink, u->rtpoll);
1891         pa_sink_put(u->sink);
1892
1893         if (u->sink->set_volume)
1894             u->sink->set_volume(u->sink);
1895     }
1896
1897     if (u->source) {
1898         pa_source_set_asyncmsgq(u->source, u->thread_mq.inq);
1899         pa_source_set_rtpoll(u->source, u->rtpoll);
1900         pa_source_put(u->source);
1901
1902         if (u->source->set_volume)
1903             u->source->set_volume(u->source);
1904     }
1905
1906     return 0;
1907 }
1908
1909 /* Run from main thread */
1910 static int card_set_profile(pa_card *c, pa_card_profile *new_profile) {
1911     struct userdata *u;
1912     enum profile *d;
1913     pa_queue *inputs = NULL, *outputs = NULL;
1914     const pa_bluetooth_device *device;
1915
1916     pa_assert(c);
1917     pa_assert(new_profile);
1918     pa_assert_se(u = c->userdata);
1919
1920     d = PA_CARD_PROFILE_DATA(new_profile);
1921
1922     if (!(device = pa_bluetooth_discovery_get_by_path(u->discovery, u->path))) {
1923         pa_log_error("Failed to get device object.");
1924         return -PA_ERR_IO;
1925     }
1926
1927     /* The state signal is sent by bluez, so it is racy to check
1928        strictly for CONNECTED, we should also accept STREAMING state
1929        as being good enough. However, if the profile is used
1930        concurrently (which is unlikely), ipc will fail later on, and
1931        module will be unloaded. */
1932     if (device->headset_state < PA_BT_AUDIO_STATE_CONNECTED && *d == PROFILE_HSP) {
1933         pa_log_warn("HSP is not connected, refused to switch profile");
1934         return -PA_ERR_IO;
1935     }
1936     else if (device->audio_sink_state < PA_BT_AUDIO_STATE_CONNECTED && *d == PROFILE_A2DP) {
1937         pa_log_warn("A2DP is not connected, refused to switch profile");
1938         return -PA_ERR_IO;
1939     }
1940
1941     if (u->sink) {
1942         inputs = pa_sink_move_all_start(u->sink, NULL);
1943 #ifdef NOKIA
1944         if (!USE_SCO_OVER_PCM(u))
1945 #endif
1946             pa_sink_unlink(u->sink);
1947     }
1948
1949     if (u->source) {
1950         outputs = pa_source_move_all_start(u->source, NULL);
1951 #ifdef NOKIA
1952         if (!USE_SCO_OVER_PCM(u))
1953 #endif
1954             pa_source_unlink(u->source);
1955     }
1956
1957     stop_thread(u);
1958     shutdown_bt(u);
1959
1960     u->profile = *d;
1961     u->sample_spec = u->requested_sample_spec;
1962
1963     init_bt(u);
1964
1965     if (u->profile != PROFILE_OFF)
1966         init_profile(u);
1967
1968     if (u->sink || u->source)
1969         start_thread(u);
1970
1971     if (inputs) {
1972         if (u->sink)
1973             pa_sink_move_all_finish(u->sink, inputs, FALSE);
1974         else
1975             pa_sink_move_all_fail(inputs);
1976     }
1977
1978     if (outputs) {
1979         if (u->source)
1980             pa_source_move_all_finish(u->source, outputs, FALSE);
1981         else
1982             pa_source_move_all_fail(outputs);
1983     }
1984
1985     return 0;
1986 }
1987
1988 /* Run from main thread */
1989 static int add_card(struct userdata *u, const pa_bluetooth_device *device) {
1990     pa_card_new_data data;
1991     pa_bool_t b;
1992     pa_card_profile *p;
1993     enum profile *d;
1994     const char *ff;
1995     char *n;
1996     const char *default_profile;
1997
1998     pa_assert(u);
1999     pa_assert(device);
2000
2001     pa_card_new_data_init(&data);
2002     data.driver = __FILE__;
2003     data.module = u->module;
2004
2005     n = pa_bluetooth_cleanup_name(device->name);
2006     pa_proplist_sets(data.proplist, PA_PROP_DEVICE_DESCRIPTION, n);
2007     pa_xfree(n);
2008     pa_proplist_sets(data.proplist, PA_PROP_DEVICE_STRING, device->address);
2009     pa_proplist_sets(data.proplist, PA_PROP_DEVICE_API, "bluez");
2010     pa_proplist_sets(data.proplist, PA_PROP_DEVICE_CLASS, "sound");
2011     pa_proplist_sets(data.proplist, PA_PROP_DEVICE_BUS, "bluetooth");
2012     if ((ff = pa_bluetooth_get_form_factor(device->class)))
2013         pa_proplist_sets(data.proplist, PA_PROP_DEVICE_FORM_FACTOR, ff);
2014     pa_proplist_sets(data.proplist, "bluez.path", device->path);
2015     pa_proplist_setf(data.proplist, "bluez.class", "0x%06x", (unsigned) device->class);
2016     pa_proplist_sets(data.proplist, "bluez.name", device->name);
2017     data.name = get_name("card", u->modargs, device->address, &b);
2018     data.namereg_fail = b;
2019
2020     if (pa_modargs_get_proplist(u->modargs, "card_properties", data.proplist, PA_UPDATE_REPLACE) < 0) {
2021         pa_log("Invalid properties");
2022         pa_card_new_data_done(&data);
2023         return -1;
2024     }
2025
2026     data.profiles = pa_hashmap_new(pa_idxset_string_hash_func, pa_idxset_string_compare_func);
2027
2028     /* we base hsp/a2dp availability on UUIDs.
2029        Ideally, it would be based on "Connected" state, but
2030        we can't afford to wait for this information when
2031        we are loaded with profile="hsp", for instance */
2032     if (pa_bluetooth_uuid_has(device->uuids, A2DP_SINK_UUID)) {
2033         p = pa_card_profile_new("a2dp", _("High Fidelity Playback (A2DP)"), sizeof(enum profile));
2034         p->priority = 10;
2035         p->n_sinks = 1;
2036         p->n_sources = 0;
2037         p->max_sink_channels = 2;
2038         p->max_source_channels = 0;
2039
2040         d = PA_CARD_PROFILE_DATA(p);
2041         *d = PROFILE_A2DP;
2042
2043         pa_hashmap_put(data.profiles, p->name, p);
2044     }
2045
2046     if (pa_bluetooth_uuid_has(device->uuids, HSP_HS_UUID) ||
2047         pa_bluetooth_uuid_has(device->uuids, HFP_HS_UUID)) {
2048         p = pa_card_profile_new("hsp", _("Telephony Duplex (HSP/HFP)"), sizeof(enum profile));
2049         p->priority = 20;
2050         p->n_sinks = 1;
2051         p->n_sources = 1;
2052         p->max_sink_channels = 1;
2053         p->max_source_channels = 1;
2054
2055         d = PA_CARD_PROFILE_DATA(p);
2056         *d = PROFILE_HSP;
2057
2058         pa_hashmap_put(data.profiles, p->name, p);
2059     }
2060
2061     pa_assert(!pa_hashmap_isempty(data.profiles));
2062
2063     p = pa_card_profile_new("off", _("Off"), sizeof(enum profile));
2064     d = PA_CARD_PROFILE_DATA(p);
2065     *d = PROFILE_OFF;
2066     pa_hashmap_put(data.profiles, p->name, p);
2067
2068     if ((default_profile = pa_modargs_get_value(u->modargs, "profile", NULL))) {
2069         if (pa_hashmap_get(data.profiles, default_profile))
2070             pa_card_new_data_set_profile(&data, default_profile);
2071         else
2072             pa_log_warn("Profile '%s' not valid or not supported by device.", default_profile);
2073     }
2074
2075     u->card = pa_card_new(u->core, &data);
2076     pa_card_new_data_done(&data);
2077
2078     if (!u->card) {
2079         pa_log("Failed to allocate card.");
2080         return -1;
2081     }
2082
2083     u->card->userdata = u;
2084     u->card->set_profile = card_set_profile;
2085
2086     d = PA_CARD_PROFILE_DATA(u->card->active_profile);
2087     u->profile = *d;
2088
2089     return 0;
2090 }
2091
2092 /* Run from main thread */
2093 static const pa_bluetooth_device* find_device(struct userdata *u, const char *address, const char *path) {
2094     const pa_bluetooth_device *d = NULL;
2095
2096     pa_assert(u);
2097
2098     if (!address && !path) {
2099         pa_log_error("Failed to get device address/path from module arguments.");
2100         return NULL;
2101     }
2102
2103     if (path) {
2104         if (!(d = pa_bluetooth_discovery_get_by_path(u->discovery, path))) {
2105             pa_log_error("%s is not a valid BlueZ audio device.", path);
2106             return NULL;
2107         }
2108
2109         if (address && !(pa_streq(d->address, address))) {
2110             pa_log_error("Passed path %s and address %s don't match.", path, address);
2111             return NULL;
2112         }
2113
2114     } else {
2115         if (!(d = pa_bluetooth_discovery_get_by_address(u->discovery, address))) {
2116             pa_log_error("%s is not known.", address);
2117             return NULL;
2118         }
2119     }
2120
2121     if (d) {
2122         u->address = pa_xstrdup(d->address);
2123         u->path = pa_xstrdup(d->path);
2124     }
2125
2126     return d;
2127 }
2128
2129 /* Run from main thread */
2130 static int setup_dbus(struct userdata *u) {
2131     DBusError err;
2132
2133     dbus_error_init(&err);
2134
2135     u->connection = pa_dbus_bus_get(u->core, DBUS_BUS_SYSTEM, &err);
2136
2137     if (dbus_error_is_set(&err) || !u->connection) {
2138         pa_log("Failed to get D-Bus connection: %s", err.message);
2139         dbus_error_free(&err);
2140         return -1;
2141     }
2142
2143     return 0;
2144 }
2145
2146 int pa__init(pa_module* m) {
2147     pa_modargs *ma;
2148     uint32_t channels;
2149     struct userdata *u;
2150     const char *address, *path;
2151     DBusError err;
2152     char *mike, *speaker;
2153     const pa_bluetooth_device *device;
2154
2155     pa_assert(m);
2156
2157     dbus_error_init(&err);
2158
2159     if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
2160         pa_log_error("Failed to parse module arguments");
2161         goto fail;
2162     }
2163
2164     m->userdata = u = pa_xnew0(struct userdata, 1);
2165     u->module = m;
2166     u->core = m->core;
2167     u->service_fd = -1;
2168     u->stream_fd = -1;
2169     u->sample_spec = m->core->default_sample_spec;
2170     u->modargs = ma;
2171
2172 #ifdef NOKIA
2173     if (pa_modargs_get_value(ma, "sco_sink", NULL) &&
2174         !(u->hsp.sco_sink = pa_namereg_get(m->core, pa_modargs_get_value(ma, "sco_sink", NULL), PA_NAMEREG_SINK))) {
2175         pa_log("SCO sink not found");
2176         goto fail;
2177     }
2178
2179     if (pa_modargs_get_value(ma, "sco_source", NULL) &&
2180         !(u->hsp.sco_source = pa_namereg_get(m->core, pa_modargs_get_value(ma, "sco_source", NULL), PA_NAMEREG_SOURCE))) {
2181         pa_log("SCO source not found");
2182         goto fail;
2183     }
2184 #endif
2185
2186     if (pa_modargs_get_value_u32(ma, "rate", &u->sample_spec.rate) < 0 ||
2187         u->sample_spec.rate <= 0 || u->sample_spec.rate > PA_RATE_MAX) {
2188         pa_log_error("Failed to get rate from module arguments");
2189         goto fail;
2190     }
2191
2192     channels = u->sample_spec.channels;
2193     if (pa_modargs_get_value_u32(ma, "channels", &channels) < 0 ||
2194         channels <= 0 || channels > PA_CHANNELS_MAX) {
2195         pa_log_error("Failed to get channels from module arguments");
2196         goto fail;
2197     }
2198     u->sample_spec.channels = (uint8_t) channels;
2199     u->requested_sample_spec = u->sample_spec;
2200
2201     address = pa_modargs_get_value(ma, "address", NULL);
2202     path = pa_modargs_get_value(ma, "path", NULL);
2203
2204     if (setup_dbus(u) < 0)
2205         goto fail;
2206
2207     if (!(u->discovery = pa_bluetooth_discovery_get(m->core)))
2208         goto fail;
2209
2210     if (!(device = find_device(u, address, path)))
2211         goto fail;
2212
2213     /* Add the card structure. This will also initialize the default profile */
2214     if (add_card(u, device) < 0)
2215         goto fail;
2216
2217     /* Connect to the BT service and query capabilities */
2218     if (init_bt(u) < 0)
2219         goto fail;
2220
2221     if (!dbus_connection_add_filter(pa_dbus_connection_get(u->connection), filter_cb, u, NULL)) {
2222         pa_log_error("Failed to add filter function");
2223         goto fail;
2224     }
2225
2226     speaker = pa_sprintf_malloc("type='signal',sender='org.bluez',interface='org.bluez.Headset',member='SpeakerGainChanged',path='%s'", u->path);
2227     mike = pa_sprintf_malloc("type='signal',sender='org.bluez',interface='org.bluez.Headset',member='MicrophoneGainChanged',path='%s'", u->path);
2228
2229     if (pa_dbus_add_matches(
2230                 pa_dbus_connection_get(u->connection), &err,
2231                 speaker,
2232                 mike,
2233                 NULL) < 0) {
2234
2235         pa_xfree(speaker);
2236         pa_xfree(mike);
2237
2238         pa_log("Failed to add D-Bus matches: %s", err.message);
2239         goto fail;
2240     }
2241
2242     pa_xfree(speaker);
2243     pa_xfree(mike);
2244
2245     if (u->profile != PROFILE_OFF)
2246         if (init_profile(u) < 0)
2247             goto fail;
2248
2249     if (u->sink || u->source)
2250         if (start_thread(u) < 0)
2251             goto fail;
2252
2253     return 0;
2254
2255 fail:
2256
2257     pa__done(m);
2258
2259     dbus_error_free(&err);
2260
2261     return -1;
2262 }
2263
2264 int pa__get_n_used(pa_module *m) {
2265     struct userdata *u;
2266
2267     pa_assert(m);
2268     pa_assert_se(u = m->userdata);
2269
2270     return
2271         (u->sink ? pa_sink_linked_by(u->sink) : 0) +
2272         (u->source ? pa_source_linked_by(u->source) : 0);
2273 }
2274
2275 void pa__done(pa_module *m) {
2276     struct userdata *u;
2277     pa_assert(m);
2278
2279     if (!(u = m->userdata))
2280         return;
2281
2282     if (u->sink
2283 #ifdef NOKIA
2284         && !USE_SCO_OVER_PCM(u)
2285 #endif
2286     )
2287         pa_sink_unlink(u->sink);
2288
2289     if (u->source
2290 #ifdef NOKIA
2291         && !USE_SCO_OVER_PCM(u)
2292 #endif
2293     )
2294         pa_source_unlink(u->source);
2295
2296     stop_thread(u);
2297
2298     if (u->connection) {
2299
2300         if (u->path) {
2301             char *speaker, *mike;
2302             speaker = pa_sprintf_malloc("type='signal',sender='org.bluez',interface='org.bluez.Headset',member='SpeakerGainChanged',path='%s'", u->path);
2303             mike = pa_sprintf_malloc("type='signal',sender='org.bluez',interface='org.bluez.Headset',member='MicrophoneGainChanged',path='%s'", u->path);
2304
2305             pa_dbus_remove_matches(pa_dbus_connection_get(u->connection),
2306                                    speaker,
2307                                    mike,
2308                                    NULL);
2309
2310             pa_xfree(speaker);
2311             pa_xfree(mike);
2312         }
2313
2314         dbus_connection_remove_filter(pa_dbus_connection_get(u->connection), filter_cb, u);
2315         pa_dbus_connection_unref(u->connection);
2316     }
2317
2318     if (u->card)
2319         pa_card_free(u->card);
2320
2321     if (u->read_smoother)
2322         pa_smoother_free(u->read_smoother);
2323
2324     shutdown_bt(u);
2325
2326     if (u->a2dp.buffer)
2327         pa_xfree(u->a2dp.buffer);
2328
2329     sbc_finish(&u->a2dp.sbc);
2330
2331     if (u->modargs)
2332         pa_modargs_free(u->modargs);
2333
2334     pa_xfree(u->address);
2335     pa_xfree(u->path);
2336
2337     if (u->discovery)
2338         pa_bluetooth_discovery_unref(u->discovery);
2339
2340     pa_xfree(u);
2341 }