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[pulseaudio] / 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 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/xmalloc.h>
34 #include <pulse/timeval.h>
35 #include <pulse/sample.h>
36 #include <pulse/i18n.h>
37
38 #include <pulsecore/module.h>
39 #include <pulsecore/modargs.h>
40 #include <pulsecore/core-util.h>
41 #include <pulsecore/core-error.h>
42 #include <pulsecore/socket-util.h>
43 #include <pulsecore/thread.h>
44 #include <pulsecore/thread-mq.h>
45 #include <pulsecore/rtpoll.h>
46 #include <pulsecore/time-smoother.h>
47 #include <pulsecore/rtclock.h>
48 #include <pulsecore/namereg.h>
49
50 #include <modules/dbus-util.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 #define SOL_SCO 17
61 #define SCO_TXBUFS 0x03
62 #define SCO_RXBUFS 0x04
63
64 PA_MODULE_AUTHOR("Joao Paulo Rechi Vita");
65 PA_MODULE_DESCRIPTION("Bluetooth audio sink and source");
66 PA_MODULE_VERSION(PACKAGE_VERSION);
67 PA_MODULE_LOAD_ONCE(FALSE);
68 PA_MODULE_USAGE(
69 "name=<name for the card/sink/source, to be prefixed> "
70 "card_name=<name for the card> "
71 "sink_name=<name for the sink> "
72 "source_name=<name 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 "sco_sink=<SCO over PCM sink name> "
79 "sco_source=<SCO over PCM source name>");
80
81 static const char* const valid_modargs[] = {
82 "name",
83 "card_name",
84 "sink_name",
85 "source_name",
86 "address",
87 "profile",
88 "rate",
89 "channels",
90 "path",
91 "sco_sink",
92 "sco_source",
93 NULL
94 };
95
96 struct a2dp_info {
97 sbc_capabilities_t sbc_capabilities;
98 sbc_t sbc; /* Codec data */
99 pa_bool_t sbc_initialized; /* Keep track if the encoder is initialized */
100 size_t codesize; /* SBC codesize */
101
102 void* buffer; /* Codec transfer buffer */
103 size_t buffer_size; /* Size of the buffer */
104
105 uint16_t seq_num; /* Cumulative packet sequence */
106 };
107
108 struct hsp_info {
109 pcm_capabilities_t pcm_capabilities;
110 pa_sink *sco_sink;
111 pa_source *sco_source;
112 pa_hook_slot *sink_state_changed_slot;
113 pa_hook_slot *source_state_changed_slot;
114 };
115
116 enum profile {
117 PROFILE_A2DP,
118 PROFILE_HSP,
119 PROFILE_OFF
120 };
121
122 struct userdata {
123 pa_core *core;
124 pa_module *module;
125
126 pa_card *card;
127 pa_sink *sink;
128 pa_source *source;
129
130 pa_thread_mq thread_mq;
131 pa_rtpoll *rtpoll;
132 pa_rtpoll_item *rtpoll_item;
133 pa_thread *thread;
134
135 uint64_t read_index, write_index;
136 pa_usec_t started_at;
137 pa_smoother *read_smoother;
138
139 pa_memchunk write_memchunk;
140
141 pa_sample_spec sample_spec, requested_sample_spec;
142
143 int service_fd;
144 int stream_fd;
145
146 size_t link_mtu;
147 size_t block_size;
148
149 struct a2dp_info a2dp;
150 struct hsp_info hsp;
151 pa_dbus_connection *connection;
152
153 enum profile profile;
154
155 pa_modargs *modargs;
156
157 pa_bluetooth_device *device;
158
159 int stream_write_type, stream_read_type;
160 int service_write_type, service_read_type;
161 };
162
163 static int init_bt(struct userdata *u);
164 static int init_profile(struct userdata *u);
165
166 static int service_send(struct userdata *u, const bt_audio_msg_header_t *msg) {
167 ssize_t r;
168
169 pa_assert(u);
170 pa_assert(u->service_fd >= 0);
171 pa_assert(msg);
172 pa_assert(msg->length > 0);
173
174 pa_log_debug("Sending %s -> %s",
175 pa_strnull(bt_audio_strtype(msg->type)),
176 pa_strnull(bt_audio_strname(msg->name)));
177
178 if ((r = pa_loop_write(u->service_fd, msg, msg->length, &u->service_write_type)) == (ssize_t) msg->length)
179 return 0;
180
181 if (r < 0)
182 pa_log_error("Error sending data to audio service: %s", pa_cstrerror(errno));
183 else
184 pa_log_error("Short write()");
185
186 return -1;
187 }
188
189 static int service_recv(struct userdata *u, bt_audio_msg_header_t *msg, size_t room) {
190 ssize_t r;
191
192 pa_assert(u);
193 pa_assert(u->service_fd >= 0);
194 pa_assert(msg);
195
196 if (room <= 0)
197 room = BT_SUGGESTED_BUFFER_SIZE;
198
199 pa_log_debug("Trying to receive message from audio service...");
200
201 /* First, read the header */
202 if ((r = pa_loop_read(u->service_fd, msg, sizeof(*msg), &u->service_read_type)) != sizeof(*msg))
203 goto read_fail;
204
205 if (msg->length < sizeof(*msg)) {
206 pa_log_error("Invalid message size.");
207 return -1;
208 }
209
210 /* Secondly, read the payload */
211 if (msg->length > sizeof(*msg)) {
212
213 size_t remains = msg->length - sizeof(*msg);
214
215 if ((r = pa_loop_read(u->service_fd,
216 (uint8_t*) msg + sizeof(*msg),
217 remains,
218 &u->service_read_type)) != (ssize_t) remains)
219 goto read_fail;
220 }
221
222 pa_log_debug("Received %s <- %s",
223 pa_strnull(bt_audio_strtype(msg->type)),
224 pa_strnull(bt_audio_strname(msg->name)));
225
226 return 0;
227
228 read_fail:
229
230 if (r < 0)
231 pa_log_error("Error receiving data from audio service: %s", pa_cstrerror(errno));
232 else
233 pa_log_error("Short read()");
234
235 return -1;
236 }
237
238 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) {
239 int r;
240
241 pa_assert(u);
242 pa_assert(u->service_fd >= 0);
243 pa_assert(rsp);
244
245 if ((r = service_recv(u, rsp, room)) < 0)
246 return r;
247
248 if ((rsp->type != BT_INDICATION && rsp->type != BT_RESPONSE) ||
249 rsp->name != expected_name ||
250 (expected_size > 0 && rsp->length != expected_size)) {
251
252 if (rsp->type == BT_ERROR && rsp->length == sizeof(bt_audio_error_t))
253 pa_log_error("Received error condition: %s", pa_cstrerror(((bt_audio_error_t*) rsp)->posix_errno));
254 else
255 pa_log_error("Bogus message %s received while %s was expected",
256 pa_strnull(bt_audio_strname(rsp->name)),
257 pa_strnull(bt_audio_strname(expected_name)));
258 return -1;
259 }
260
261 return 0;
262 }
263
264 static int parse_caps(struct userdata *u, const struct bt_get_capabilities_rsp *rsp) {
265 uint16_t bytes_left;
266 const codec_capabilities_t *codec;
267
268 pa_assert(u);
269 pa_assert(rsp);
270
271 bytes_left = rsp->h.length - sizeof(*rsp);
272
273 if (bytes_left < sizeof(codec_capabilities_t)) {
274 pa_log_error("Packet too small to store codec information.");
275 return -1;
276 }
277
278 codec = (codec_capabilities_t *) rsp->data; /** ALIGNMENT? **/
279
280 pa_log_debug("Payload size is %lu %lu", (unsigned long) bytes_left, (unsigned long) sizeof(*codec));
281
282 if ((u->profile == PROFILE_A2DP && codec->transport != BT_CAPABILITIES_TRANSPORT_A2DP) ||
283 (u->profile == PROFILE_HSP && codec->transport != BT_CAPABILITIES_TRANSPORT_SCO)) {
284 pa_log_error("Got capabilities for wrong codec.");
285 return -1;
286 }
287
288 if (u->profile == PROFILE_HSP) {
289
290 if (bytes_left <= 0 || codec->length != sizeof(u->hsp.pcm_capabilities))
291 return -1;
292
293 pa_assert(codec->type == BT_HFP_CODEC_PCM);
294
295 memcpy(&u->hsp.pcm_capabilities, codec, sizeof(u->hsp.pcm_capabilities));
296
297 } else if (u->profile == PROFILE_A2DP) {
298
299 while (bytes_left > 0) {
300 if (codec->type == BT_A2DP_CODEC_SBC)
301 break;
302
303 bytes_left -= codec->length;
304 codec = (const codec_capabilities_t*) ((const uint8_t*) codec + codec->length);
305 }
306
307 if (bytes_left <= 0 || codec->length != sizeof(u->a2dp.sbc_capabilities))
308 return -1;
309
310 pa_assert(codec->type == BT_A2DP_CODEC_SBC);
311
312 memcpy(&u->a2dp.sbc_capabilities, codec, sizeof(u->a2dp.sbc_capabilities));
313 }
314
315 return 0;
316 }
317
318 static int get_caps(struct userdata *u) {
319 union {
320 struct bt_get_capabilities_req getcaps_req;
321 struct bt_get_capabilities_rsp getcaps_rsp;
322 bt_audio_error_t error;
323 uint8_t buf[BT_SUGGESTED_BUFFER_SIZE];
324 } msg;
325
326 pa_assert(u);
327
328 memset(&msg, 0, sizeof(msg));
329 msg.getcaps_req.h.type = BT_REQUEST;
330 msg.getcaps_req.h.name = BT_GET_CAPABILITIES;
331 msg.getcaps_req.h.length = sizeof(msg.getcaps_req);
332
333 pa_strlcpy(msg.getcaps_req.device, u->device->address, sizeof(msg.getcaps_req.device));
334 if (u->profile == PROFILE_A2DP)
335 msg.getcaps_req.transport = BT_CAPABILITIES_TRANSPORT_A2DP;
336 else {
337 pa_assert(u->profile == PROFILE_HSP);
338 msg.getcaps_req.transport = BT_CAPABILITIES_TRANSPORT_SCO;
339 }
340 msg.getcaps_req.flags = BT_FLAG_AUTOCONNECT;
341
342 if (service_send(u, &msg.getcaps_req.h) < 0)
343 return -1;
344
345 if (service_expect(u, &msg.getcaps_rsp.h, sizeof(msg), BT_GET_CAPABILITIES, 0) < 0)
346 return -1;
347
348 return parse_caps(u, &msg.getcaps_rsp);
349 }
350
351 static uint8_t a2dp_default_bitpool(uint8_t freq, uint8_t mode) {
352
353 switch (freq) {
354 case BT_SBC_SAMPLING_FREQ_16000:
355 case BT_SBC_SAMPLING_FREQ_32000:
356 return 53;
357
358 case BT_SBC_SAMPLING_FREQ_44100:
359
360 switch (mode) {
361 case BT_A2DP_CHANNEL_MODE_MONO:
362 case BT_A2DP_CHANNEL_MODE_DUAL_CHANNEL:
363 return 31;
364
365 case BT_A2DP_CHANNEL_MODE_STEREO:
366 case BT_A2DP_CHANNEL_MODE_JOINT_STEREO:
367 return 53;
368
369 default:
370 pa_log_warn("Invalid channel mode %u", mode);
371 return 53;
372 }
373
374 case BT_SBC_SAMPLING_FREQ_48000:
375
376 switch (mode) {
377 case BT_A2DP_CHANNEL_MODE_MONO:
378 case BT_A2DP_CHANNEL_MODE_DUAL_CHANNEL:
379 return 29;
380
381 case BT_A2DP_CHANNEL_MODE_STEREO:
382 case BT_A2DP_CHANNEL_MODE_JOINT_STEREO:
383 return 51;
384
385 default:
386 pa_log_warn("Invalid channel mode %u", mode);
387 return 51;
388 }
389
390 default:
391 pa_log_warn("Invalid sampling freq %u", freq);
392 return 53;
393 }
394 }
395
396 static int setup_a2dp(struct userdata *u) {
397 sbc_capabilities_t *cap;
398 int i;
399
400 static const struct {
401 uint32_t rate;
402 uint8_t cap;
403 } freq_table[] = {
404 { 16000U, BT_SBC_SAMPLING_FREQ_16000 },
405 { 32000U, BT_SBC_SAMPLING_FREQ_32000 },
406 { 44100U, BT_SBC_SAMPLING_FREQ_44100 },
407 { 48000U, BT_SBC_SAMPLING_FREQ_48000 }
408 };
409
410 pa_assert(u);
411 pa_assert(u->profile == PROFILE_A2DP);
412
413 cap = &u->a2dp.sbc_capabilities;
414
415 /* Find the lowest freq that is at least as high as the requested
416 * sampling rate */
417 for (i = 0; (unsigned) i < PA_ELEMENTSOF(freq_table); i++)
418 if (freq_table[i].rate >= u->sample_spec.rate && (cap->frequency & freq_table[i].cap)) {
419 u->sample_spec.rate = freq_table[i].rate;
420 cap->frequency = freq_table[i].cap;
421 break;
422 }
423
424 if ((unsigned) i >= PA_ELEMENTSOF(freq_table)) {
425 for (; i >= 0; i--) {
426 if (cap->frequency & freq_table[i].cap) {
427 u->sample_spec.rate = freq_table[i].rate;
428 cap->frequency = freq_table[i].cap;
429 break;
430 }
431 }
432
433 if (i < 0) {
434 pa_log("Not suitable sample rate");
435 return -1;
436 }
437 }
438
439 if (u->sample_spec.channels <= 1) {
440 if (cap->channel_mode & BT_A2DP_CHANNEL_MODE_MONO) {
441 cap->channel_mode = BT_A2DP_CHANNEL_MODE_MONO;
442 u->sample_spec.channels = 1;
443 } else
444 u->sample_spec.channels = 2;
445 }
446
447 if (u->sample_spec.channels >= 2) {
448 u->sample_spec.channels = 2;
449
450 if (cap->channel_mode & BT_A2DP_CHANNEL_MODE_JOINT_STEREO)
451 cap->channel_mode = BT_A2DP_CHANNEL_MODE_JOINT_STEREO;
452 else if (cap->channel_mode & BT_A2DP_CHANNEL_MODE_STEREO)
453 cap->channel_mode = BT_A2DP_CHANNEL_MODE_STEREO;
454 else if (cap->channel_mode & BT_A2DP_CHANNEL_MODE_DUAL_CHANNEL)
455 cap->channel_mode = BT_A2DP_CHANNEL_MODE_DUAL_CHANNEL;
456 else if (cap->channel_mode & BT_A2DP_CHANNEL_MODE_MONO) {
457 cap->channel_mode = BT_A2DP_CHANNEL_MODE_MONO;
458 u->sample_spec.channels = 1;
459 } else {
460 pa_log("No supported channel modes");
461 return -1;
462 }
463 }
464
465 if (cap->block_length & BT_A2DP_BLOCK_LENGTH_16)
466 cap->block_length = BT_A2DP_BLOCK_LENGTH_16;
467 else if (cap->block_length & BT_A2DP_BLOCK_LENGTH_12)
468 cap->block_length = BT_A2DP_BLOCK_LENGTH_12;
469 else if (cap->block_length & BT_A2DP_BLOCK_LENGTH_8)
470 cap->block_length = BT_A2DP_BLOCK_LENGTH_8;
471 else if (cap->block_length & BT_A2DP_BLOCK_LENGTH_4)
472 cap->block_length = BT_A2DP_BLOCK_LENGTH_4;
473 else {
474 pa_log_error("No supported block lengths");
475 return -1;
476 }
477
478 if (cap->subbands & BT_A2DP_SUBBANDS_8)
479 cap->subbands = BT_A2DP_SUBBANDS_8;
480 else if (cap->subbands & BT_A2DP_SUBBANDS_4)
481 cap->subbands = BT_A2DP_SUBBANDS_4;
482 else {
483 pa_log_error("No supported subbands");
484 return -1;
485 }
486
487 if (cap->allocation_method & BT_A2DP_ALLOCATION_LOUDNESS)
488 cap->allocation_method = BT_A2DP_ALLOCATION_LOUDNESS;
489 else if (cap->allocation_method & BT_A2DP_ALLOCATION_SNR)
490 cap->allocation_method = BT_A2DP_ALLOCATION_SNR;
491
492 cap->min_bitpool = (uint8_t) PA_MAX(MIN_BITPOOL, cap->min_bitpool);
493 cap->max_bitpool = (uint8_t) PA_MIN(a2dp_default_bitpool(cap->frequency, cap->channel_mode), cap->max_bitpool);
494
495 return 0;
496 }
497
498 static void setup_sbc(struct a2dp_info *a2dp) {
499 sbc_capabilities_t *active_capabilities;
500
501 pa_assert(a2dp);
502
503 active_capabilities = &a2dp->sbc_capabilities;
504
505 if (a2dp->sbc_initialized)
506 sbc_reinit(&a2dp->sbc, 0);
507 else
508 sbc_init(&a2dp->sbc, 0);
509 a2dp->sbc_initialized = TRUE;
510
511 switch (active_capabilities->frequency) {
512 case BT_SBC_SAMPLING_FREQ_16000:
513 a2dp->sbc.frequency = SBC_FREQ_16000;
514 break;
515 case BT_SBC_SAMPLING_FREQ_32000:
516 a2dp->sbc.frequency = SBC_FREQ_32000;
517 break;
518 case BT_SBC_SAMPLING_FREQ_44100:
519 a2dp->sbc.frequency = SBC_FREQ_44100;
520 break;
521 case BT_SBC_SAMPLING_FREQ_48000:
522 a2dp->sbc.frequency = SBC_FREQ_48000;
523 break;
524 default:
525 pa_assert_not_reached();
526 }
527
528 switch (active_capabilities->channel_mode) {
529 case BT_A2DP_CHANNEL_MODE_MONO:
530 a2dp->sbc.mode = SBC_MODE_MONO;
531 break;
532 case BT_A2DP_CHANNEL_MODE_DUAL_CHANNEL:
533 a2dp->sbc.mode = SBC_MODE_DUAL_CHANNEL;
534 break;
535 case BT_A2DP_CHANNEL_MODE_STEREO:
536 a2dp->sbc.mode = SBC_MODE_STEREO;
537 break;
538 case BT_A2DP_CHANNEL_MODE_JOINT_STEREO:
539 a2dp->sbc.mode = SBC_MODE_JOINT_STEREO;
540 break;
541 default:
542 pa_assert_not_reached();
543 }
544
545 switch (active_capabilities->allocation_method) {
546 case BT_A2DP_ALLOCATION_SNR:
547 a2dp->sbc.allocation = SBC_AM_SNR;
548 break;
549 case BT_A2DP_ALLOCATION_LOUDNESS:
550 a2dp->sbc.allocation = SBC_AM_LOUDNESS;
551 break;
552 default:
553 pa_assert_not_reached();
554 }
555
556 switch (active_capabilities->subbands) {
557 case BT_A2DP_SUBBANDS_4:
558 a2dp->sbc.subbands = SBC_SB_4;
559 break;
560 case BT_A2DP_SUBBANDS_8:
561 a2dp->sbc.subbands = SBC_SB_8;
562 break;
563 default:
564 pa_assert_not_reached();
565 }
566
567 switch (active_capabilities->block_length) {
568 case BT_A2DP_BLOCK_LENGTH_4:
569 a2dp->sbc.blocks = SBC_BLK_4;
570 break;
571 case BT_A2DP_BLOCK_LENGTH_8:
572 a2dp->sbc.blocks = SBC_BLK_8;
573 break;
574 case BT_A2DP_BLOCK_LENGTH_12:
575 a2dp->sbc.blocks = SBC_BLK_12;
576 break;
577 case BT_A2DP_BLOCK_LENGTH_16:
578 a2dp->sbc.blocks = SBC_BLK_16;
579 break;
580 default:
581 pa_assert_not_reached();
582 }
583
584 a2dp->sbc.bitpool = active_capabilities->max_bitpool;
585 a2dp->codesize = (uint16_t) sbc_get_codesize(&a2dp->sbc);
586 }
587
588 static int set_conf(struct userdata *u) {
589 union {
590 struct bt_set_configuration_req setconf_req;
591 struct bt_set_configuration_rsp setconf_rsp;
592 bt_audio_error_t error;
593 uint8_t buf[BT_SUGGESTED_BUFFER_SIZE];
594 } msg;
595
596 if (u->profile == PROFILE_A2DP ) {
597 u->sample_spec.format = PA_SAMPLE_S16LE;
598
599 if (setup_a2dp(u) < 0)
600 return -1;
601 } else {
602 pa_assert(u->profile == PROFILE_HSP);
603
604 u->sample_spec.format = PA_SAMPLE_S16LE;
605 u->sample_spec.channels = 1;
606 u->sample_spec.rate = 8000;
607 }
608
609 memset(&msg, 0, sizeof(msg));
610 msg.setconf_req.h.type = BT_REQUEST;
611 msg.setconf_req.h.name = BT_SET_CONFIGURATION;
612 msg.setconf_req.h.length = sizeof(msg.setconf_req);
613
614 pa_strlcpy(msg.setconf_req.device, u->device->address, sizeof(msg.setconf_req.device));
615 msg.setconf_req.access_mode = u->profile == PROFILE_A2DP ? BT_CAPABILITIES_ACCESS_MODE_WRITE : BT_CAPABILITIES_ACCESS_MODE_READWRITE;
616
617 msg.setconf_req.codec.transport = u->profile == PROFILE_A2DP ? BT_CAPABILITIES_TRANSPORT_A2DP : BT_CAPABILITIES_TRANSPORT_SCO;
618
619 if (u->profile == PROFILE_A2DP) {
620 memcpy(&msg.setconf_req.codec, &u->a2dp.sbc_capabilities, sizeof(u->a2dp.sbc_capabilities));
621 msg.setconf_req.h.length += msg.setconf_req.codec.length - sizeof(msg.setconf_req.codec);
622 }
623
624 if (service_send(u, &msg.setconf_req.h) < 0)
625 return -1;
626
627 if (service_expect(u, &msg.setconf_rsp.h, sizeof(msg), BT_SET_CONFIGURATION, sizeof(msg.setconf_rsp)) < 0)
628 return -1;
629
630 if ((u->profile == PROFILE_A2DP && msg.setconf_rsp.transport != BT_CAPABILITIES_TRANSPORT_A2DP) ||
631 (u->profile == PROFILE_HSP && msg.setconf_rsp.transport != BT_CAPABILITIES_TRANSPORT_SCO)) {
632 pa_log("Transport doesn't match what we requested.");
633 return -1;
634 }
635
636 if ((u->profile == PROFILE_A2DP && msg.setconf_rsp.access_mode != BT_CAPABILITIES_ACCESS_MODE_WRITE) ||
637 (u->profile == PROFILE_HSP && msg.setconf_rsp.access_mode != BT_CAPABILITIES_ACCESS_MODE_READWRITE)) {
638 pa_log("Access mode doesn't match what we requested.");
639 return -1;
640 }
641
642 u->link_mtu = msg.setconf_rsp.link_mtu;
643
644 /* setup SBC encoder now we agree on parameters */
645 if (u->profile == PROFILE_A2DP) {
646 setup_sbc(&u->a2dp);
647 u->block_size = u->a2dp.codesize;
648 pa_log_info("SBC parameters:\n\tallocation=%u\n\tsubbands=%u\n\tblocks=%u\n\tbitpool=%u\n",
649 u->a2dp.sbc.allocation, u->a2dp.sbc.subbands, u->a2dp.sbc.blocks, u->a2dp.sbc.bitpool);
650 } else
651 u->block_size = u->link_mtu;
652
653 return 0;
654 }
655
656 /* from IO thread */
657 static int start_stream_fd(struct userdata *u) {
658 union {
659 bt_audio_msg_header_t rsp;
660 struct bt_start_stream_req start_req;
661 struct bt_start_stream_rsp start_rsp;
662 struct bt_new_stream_ind streamfd_ind;
663 bt_audio_error_t error;
664 uint8_t buf[BT_SUGGESTED_BUFFER_SIZE];
665 } msg;
666 struct pollfd *pollfd;
667
668 pa_assert(u);
669 pa_assert(u->rtpoll);
670 pa_assert(!u->rtpoll_item);
671 pa_assert(u->stream_fd < 0);
672
673 memset(msg.buf, 0, BT_SUGGESTED_BUFFER_SIZE);
674 msg.start_req.h.type = BT_REQUEST;
675 msg.start_req.h.name = BT_START_STREAM;
676 msg.start_req.h.length = sizeof(msg.start_req);
677
678 if (service_send(u, &msg.start_req.h) < 0)
679 return -1;
680
681 if (service_expect(u, &msg.rsp, sizeof(msg), BT_START_STREAM, sizeof(msg.start_rsp)) < 0)
682 return -1;
683
684 if (service_expect(u, &msg.rsp, sizeof(msg), BT_NEW_STREAM, sizeof(msg.streamfd_ind)) < 0)
685 return -1;
686
687 if ((u->stream_fd = bt_audio_service_get_data_fd(u->service_fd)) < 0) {
688 pa_log("Failed to get stream fd from audio service.");
689 return -1;
690 }
691
692 /* setsockopt(u->stream_fd, SOL_SCO, SCO_TXBUFS, &period_count, sizeof(period_count)); */
693 /* setsockopt(u->stream_fd, SOL_SCO, SCO_SNDBUF, &period_count, sizeof(period_count)); */
694
695 pa_make_fd_nonblock(u->stream_fd);
696 pa_make_socket_low_delay(u->stream_fd);
697
698 u->rtpoll_item = pa_rtpoll_item_new(u->rtpoll, PA_RTPOLL_NEVER, 1);
699 pollfd = pa_rtpoll_item_get_pollfd(u->rtpoll_item, NULL);
700 pollfd->fd = u->stream_fd;
701 pollfd->events = pollfd->revents = 0;
702
703 return 0;
704 }
705
706 /* from IO thread */
707 static int stop_stream_fd(struct userdata *u) {
708 union {
709 bt_audio_msg_header_t rsp;
710 struct bt_stop_stream_req start_req;
711 struct bt_stop_stream_rsp start_rsp;
712 bt_audio_error_t error;
713 uint8_t buf[BT_SUGGESTED_BUFFER_SIZE];
714 } msg;
715 int r = 0;
716
717 pa_assert(u);
718 pa_assert(u->rtpoll);
719 pa_assert(u->rtpoll_item);
720 pa_assert(u->stream_fd >= 0);
721
722 pa_rtpoll_item_free(u->rtpoll_item);
723 u->rtpoll_item = NULL;
724
725 memset(msg.buf, 0, BT_SUGGESTED_BUFFER_SIZE);
726 msg.start_req.h.type = BT_REQUEST;
727 msg.start_req.h.name = BT_STOP_STREAM;
728 msg.start_req.h.length = sizeof(msg.start_req);
729
730 if (service_send(u, &msg.start_req.h) < 0 ||
731 service_expect(u, &msg.rsp, sizeof(msg), BT_STOP_STREAM, sizeof(msg.start_rsp)) < 0)
732 r = -1;
733
734 pa_close(u->stream_fd);
735 u->stream_fd = -1;
736
737 return r;
738 }
739
740 static int sink_process_msg(pa_msgobject *o, int code, void *data, int64_t offset, pa_memchunk *chunk) {
741 struct userdata *u = PA_SINK(o)->userdata;
742 pa_bool_t failed = FALSE;
743 int r;
744
745 pa_assert(u->sink == PA_SINK(o));
746
747 pa_log_debug("got message: %d", code);
748 switch (code) {
749
750 case PA_SINK_MESSAGE_SET_STATE:
751
752 switch ((pa_sink_state_t) PA_PTR_TO_UINT(data)) {
753
754 case PA_SINK_SUSPENDED:
755 pa_assert(PA_SINK_IS_OPENED(u->sink->thread_info.state));
756
757 /* Stop the device if the source is suspended as well */
758 if (!u->source || u->source->state == PA_SOURCE_SUSPENDED)
759 /* We deliberately ignore whether stopping
760 * actually worked. Since the stream_fd is
761 * closed it doesn't really matter */
762 stop_stream_fd(u);
763
764 break;
765
766 case PA_SINK_IDLE:
767 case PA_SINK_RUNNING:
768 if (u->sink->thread_info.state != PA_SINK_SUSPENDED)
769 break;
770
771 /* Resume the device if the source was suspended as well */
772 if (!u->source || u->source->state == PA_SOURCE_SUSPENDED)
773 if (start_stream_fd(u) < 0)
774 failed = TRUE;
775
776 u->started_at = pa_rtclock_usec();
777 break;
778
779 case PA_SINK_UNLINKED:
780 case PA_SINK_INIT:
781 case PA_SINK_INVALID_STATE:
782 ;
783 }
784 break;
785
786 case PA_SINK_MESSAGE_GET_LATENCY: {
787 *((pa_usec_t*) data) = 0;
788 return 0;
789 }
790 }
791
792 r = pa_sink_process_msg(o, code, data, offset, chunk);
793
794 return (r < 0 || !failed) ? r : -1;
795 }
796
797 static int source_process_msg(pa_msgobject *o, int code, void *data, int64_t offset, pa_memchunk *chunk) {
798 struct userdata *u = PA_SOURCE(o)->userdata;
799 pa_bool_t failed = FALSE;
800 int r;
801
802 pa_assert(u->source == PA_SOURCE(o));
803
804 pa_log_debug("got message: %d", code);
805 switch (code) {
806
807 case PA_SOURCE_MESSAGE_SET_STATE:
808
809 switch ((pa_source_state_t) PA_PTR_TO_UINT(data)) {
810
811 case PA_SOURCE_SUSPENDED:
812 pa_assert(PA_SOURCE_IS_OPENED(u->source->thread_info.state));
813
814 /* Stop the device if the sink is suspended as well */
815 if (!u->sink || u->sink->state == PA_SINK_SUSPENDED)
816 stop_stream_fd(u);
817
818 pa_smoother_pause(u->read_smoother, pa_rtclock_usec());
819 break;
820
821 case PA_SOURCE_IDLE:
822 case PA_SOURCE_RUNNING:
823 if (u->source->thread_info.state != PA_SOURCE_SUSPENDED)
824 break;
825
826 /* Resume the device if the sink was suspended as well */
827 if (!u->sink || u->sink->thread_info.state == PA_SINK_SUSPENDED)
828 if (start_stream_fd(u) < 0)
829 failed = TRUE;
830
831 pa_smoother_resume(u->read_smoother, pa_rtclock_usec());
832 break;
833
834 case PA_SOURCE_UNLINKED:
835 case PA_SOURCE_INIT:
836 case PA_SOURCE_INVALID_STATE:
837 ;
838 }
839 break;
840
841 case PA_SOURCE_MESSAGE_GET_LATENCY: {
842 *((pa_usec_t*) data) = 0;
843 return 0;
844 }
845
846 }
847
848 r = pa_source_process_msg(o, code, data, offset, chunk);
849
850 return (r < 0 || !failed) ? r : -1;
851 }
852
853 static int hsp_process_render(struct userdata *u) {
854 int ret = 0;
855 pa_memchunk memchunk;
856
857 pa_assert(u);
858 pa_assert(u->profile == PROFILE_HSP);
859 pa_assert(u->sink);
860
861 pa_sink_render_full(u->sink, u->block_size, &memchunk);
862
863 for (;;) {
864 ssize_t l;
865 const void *p;
866
867 p = (const uint8_t*) pa_memblock_acquire(memchunk.memblock) + memchunk.index;
868 l = pa_write(u->stream_fd, p, memchunk.length, &u->stream_write_type);
869 pa_memblock_release(memchunk.memblock);
870
871 pa_log_debug("Memblock written to socket: %lli bytes", (long long) l);
872
873 pa_assert(l != 0);
874
875 if (l < 0) {
876 if (errno == EINTR)
877 continue;
878 else {
879 pa_log_error("Failed to write data to SCO socket: %s", pa_cstrerror(errno));
880 ret = -1;
881 break;
882 }
883 } else {
884 pa_assert((size_t) l <= memchunk.length);
885
886 memchunk.index += (size_t) l;
887 memchunk.length -= (size_t) l;
888
889 u->write_index += (uint64_t) l;
890
891 if (memchunk.length <= 0)
892 break;
893 }
894 }
895
896 pa_memblock_unref(memchunk.memblock);
897
898 return ret;
899 }
900
901 static int hsp_process_push(struct userdata *u) {
902 int ret = 0;
903 pa_memchunk memchunk;
904
905 pa_assert(u);
906 pa_assert(u->profile == PROFILE_HSP);
907 pa_assert(u->source);
908
909 memchunk.memblock = pa_memblock_new(u->core->mempool, u->block_size);
910 memchunk.index = memchunk.length = 0;
911
912 for (;;) {
913 ssize_t l;
914 void *p;
915
916 p = pa_memblock_acquire(memchunk.memblock);
917 l = pa_read(u->stream_fd, p, pa_memblock_get_length(memchunk.memblock), &u->stream_read_type);
918 pa_memblock_release(memchunk.memblock);
919
920 if (l <= 0) {
921 if (l < 0 && errno == EINTR)
922 continue;
923 else {
924 pa_log_error("Failed to read data from SCO socket: %s", ret < 0 ? pa_cstrerror(errno) : "EOF");
925 ret = -1;
926 break;
927 }
928 } else {
929 memchunk.length = (size_t) l;
930 u->read_index += (uint64_t) l;
931
932 pa_source_post(u->source, &memchunk);
933 break;
934 }
935 }
936
937 pa_memblock_unref(memchunk.memblock);
938
939 return ret;
940 }
941
942 static int a2dp_process_render(struct userdata *u) {
943 size_t frame_size;
944 struct a2dp_info *a2dp;
945 struct rtp_header *header;
946 struct rtp_payload *payload;
947 size_t left;
948 void *d;
949 const void *p;
950 unsigned frame_count;
951 int written;
952 uint64_t writing_at;
953
954 pa_assert(u);
955 pa_assert(u->profile == PROFILE_A2DP);
956 pa_assert(u->sink);
957
958 a2dp = &u->a2dp;
959
960 if (a2dp->buffer_size < u->link_mtu) {
961 a2dp->buffer_size = 2*u->link_mtu;
962 pa_xfree(a2dp->buffer);
963 a2dp->buffer = pa_xmalloc(a2dp->buffer_size);
964 }
965
966 header = (struct rtp_header*) a2dp->buffer;
967 payload = (struct rtp_payload*) ((uint8_t*) a2dp->buffer + sizeof(*header));
968 d = (uint8_t*) a2dp->buffer + sizeof(*header) + sizeof(*payload);
969 left = a2dp->buffer_size - sizeof(*header) - sizeof(*payload);
970
971 frame_size = sbc_get_frame_length(&a2dp->sbc);
972 frame_count = 0;
973
974 writing_at = u->write_index;
975
976 do {
977 int encoded;
978
979 if (!u->write_memchunk.memblock)
980 pa_sink_render_full(u->sink, u->block_size, &u->write_memchunk);
981
982 p = (const uint8_t*) pa_memblock_acquire(u->write_memchunk.memblock) + u->write_memchunk.index;
983 encoded = sbc_encode(&a2dp->sbc,
984 (void*) p, u->write_memchunk.length,
985 d, left,
986 &written);
987
988 PA_ONCE_BEGIN {
989 pa_log_debug("Using SBC encoder implementation: %s", pa_strnull(sbc_get_implementation_info(&a2dp->sbc)));
990 } PA_ONCE_END;
991
992 pa_memblock_release(u->write_memchunk.memblock);
993
994 if (encoded <= 0) {
995 pa_log_error("SBC encoding error (%d)", encoded);
996 return -1;
997 }
998
999 pa_assert(written >= 0);
1000
1001 pa_assert((size_t) encoded <= u->write_memchunk.length);
1002 pa_assert((size_t) written <= left);
1003
1004 /* pa_log_debug("SBC: encoded: %d; written: %d", encoded, written); */
1005
1006 u->write_memchunk.index += encoded;
1007 u->write_memchunk.length -= encoded;
1008
1009 if (u->write_memchunk.length <= 0) {
1010 pa_memblock_unref(u->write_memchunk.memblock);
1011 pa_memchunk_reset(&u->write_memchunk);
1012 }
1013
1014 u->write_index += encoded;
1015
1016 d = (uint8_t*) d + written;
1017 left -= written;
1018
1019 frame_count++;
1020
1021 } while ((uint8_t*) d - (uint8_t*) a2dp->buffer + written < (ptrdiff_t) u->link_mtu);
1022
1023 /* write it to the fifo */
1024 memset(a2dp->buffer, 0, sizeof(*header) + sizeof(*payload));
1025 payload->frame_count = frame_count;
1026 header->v = 2;
1027 header->pt = 1;
1028 header->sequence_number = htons(a2dp->seq_num++);
1029 header->timestamp = htonl(writing_at / frame_size);
1030 header->ssrc = htonl(1);
1031
1032 p = a2dp->buffer;
1033 left = (uint8_t*) d - (uint8_t*) a2dp->buffer;
1034
1035 for (;;) {
1036 ssize_t l;
1037
1038 l = pa_write(u->stream_fd, p, left, &u->stream_write_type);
1039 /* pa_log_debug("write: requested %lu bytes; written %li bytes; mtu=%li", (unsigned long) left, (long) l, (unsigned long) u->link_mtu); */
1040
1041 pa_assert(l != 0);
1042
1043 if (l < 0) {
1044 if (errno == EINTR)
1045 continue;
1046 else {
1047 pa_log_error("Failed to write data to socket: %s", pa_cstrerror(errno));
1048 return -1;
1049 }
1050 } else {
1051 pa_assert((size_t) l <= left);
1052
1053 d = (uint8_t*) d + l;
1054 left -= l;
1055
1056 if (left <= 0)
1057 break;
1058 }
1059 }
1060
1061 return 0;
1062 }
1063
1064 static void thread_func(void *userdata) {
1065 struct userdata *u = userdata;
1066 pa_bool_t do_write = FALSE, writable = FALSE;
1067
1068 pa_assert(u);
1069
1070 pa_log_debug("IO Thread starting up");
1071
1072 if (u->core->realtime_scheduling)
1073 pa_make_realtime(u->core->realtime_priority);
1074
1075 if (start_stream_fd(u) < 0)
1076 goto fail;
1077
1078 pa_thread_mq_install(&u->thread_mq);
1079 pa_rtpoll_install(u->rtpoll);
1080
1081 pa_smoother_set_time_offset(u->read_smoother, pa_rtclock_usec());
1082
1083 for (;;) {
1084 struct pollfd *pollfd;
1085 int ret;
1086 pa_bool_t disable_timer = TRUE;
1087
1088 pollfd = u->rtpoll_item ? pa_rtpoll_item_get_pollfd(u->rtpoll_item, NULL) : NULL;
1089
1090 if (u->source && PA_SOURCE_IS_LINKED(u->source->thread_info.state)) {
1091
1092 if (pollfd && (pollfd->revents & POLLIN)) {
1093
1094 if (hsp_process_push(u) < 0)
1095 goto fail;
1096
1097 /* We just read something, so we are supposed to write something, too */
1098 do_write = TRUE;
1099 }
1100 }
1101
1102 if (u->sink && PA_SINK_IS_LINKED(u->sink->thread_info.state)) {
1103
1104 if (u->sink->thread_info.rewind_requested)
1105 pa_sink_process_rewind(u->sink, 0);
1106
1107 if (pollfd) {
1108 if (pollfd->revents & POLLOUT)
1109 writable = TRUE;
1110
1111 if ((!u->source || !PA_SOURCE_IS_LINKED(u->source->thread_info.state)) && !do_write && writable) {
1112 pa_usec_t time_passed;
1113 uint64_t should_have_written;
1114
1115 /* Hmm, there is no input stream we could synchronize
1116 * to. So let's do things by time */
1117
1118 time_passed = pa_rtclock_usec() - u->started_at;
1119 should_have_written = pa_usec_to_bytes(time_passed, &u->sink->sample_spec);
1120
1121 do_write = u->write_index <= should_have_written ;
1122 /* pa_log_debug("Time has come: %s", pa_yes_no(do_write)); */
1123 }
1124
1125 if (writable && do_write) {
1126
1127 if (u->profile == PROFILE_A2DP) {
1128 if (a2dp_process_render(u) < 0)
1129 goto fail;
1130 } else {
1131 if (hsp_process_render(u) < 0)
1132 goto fail;
1133 }
1134
1135 do_write = FALSE;
1136 writable = FALSE;
1137 }
1138
1139 if ((!u->source || !PA_SOURCE_IS_LINKED(u->source->thread_info.state)) && !do_write) {
1140 pa_usec_t time_passed, next_write_at, sleep_for;
1141
1142 /* Hmm, there is no input stream we could synchronize
1143 * to. So let's estimate when we need to wake up the latest */
1144
1145 time_passed = pa_rtclock_usec() - u->started_at;
1146 next_write_at = pa_bytes_to_usec(u->write_index, &u->sink->sample_spec);
1147 sleep_for = time_passed < next_write_at ? next_write_at - time_passed : 0;
1148
1149 /* 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); */
1150
1151 pa_rtpoll_set_timer_relative(u->rtpoll, sleep_for);
1152 disable_timer = FALSE;
1153 }
1154 }
1155 }
1156
1157 if (disable_timer)
1158 pa_rtpoll_set_timer_disabled(u->rtpoll);
1159
1160 /* Hmm, nothing to do. Let's sleep */
1161 if (pollfd)
1162 pollfd->events = (short) (((u->sink && PA_SINK_IS_OPENED(u->sink->thread_info.state) && !writable) ? POLLOUT : 0) |
1163 (u->source && PA_SOURCE_IS_OPENED(u->source->thread_info.state) ? POLLIN : 0));
1164
1165 if ((ret = pa_rtpoll_run(u->rtpoll, TRUE)) < 0)
1166 goto fail;
1167
1168 if (ret == 0)
1169 goto finish;
1170
1171 pollfd = u->rtpoll_item ? pa_rtpoll_item_get_pollfd(u->rtpoll_item, NULL) : NULL;
1172
1173 if (pollfd && (pollfd->revents & ~(POLLOUT|POLLIN))) {
1174 pa_log_error("FD error.");
1175 goto fail;
1176 }
1177 }
1178
1179 fail:
1180 /* If this was no regular exit from the loop we have to continue processing messages until we receive PA_MESSAGE_SHUTDOWN */
1181 pa_log_debug("IO thread failed");
1182 pa_asyncmsgq_post(u->thread_mq.outq, PA_MSGOBJECT(u->core), PA_CORE_MESSAGE_UNLOAD_MODULE, u->module, 0, NULL, NULL);
1183 pa_asyncmsgq_wait_for(u->thread_mq.inq, PA_MESSAGE_SHUTDOWN);
1184
1185 finish:
1186 pa_log_debug("IO thread shutting down");
1187 }
1188
1189 /* static DBusHandlerResult filter_cb(DBusConnection *bus, DBusMessage *msg, void *userdata) { */
1190 /* DBusMessageIter arg_i; */
1191 /* DBusError err; */
1192 /* const char *value; */
1193 /* struct userdata *u; */
1194
1195 /* pa_assert(bus); */
1196 /* pa_assert(msg); */
1197 /* pa_assert(userdata); */
1198 /* u = userdata; */
1199
1200 /* pa_log_debug("dbus: interface=%s, path=%s, member=%s\n", */
1201 /* dbus_message_get_interface(msg), */
1202 /* dbus_message_get_path(msg), */
1203 /* dbus_message_get_member(msg)); */
1204
1205 /* dbus_error_init(&err); */
1206
1207 /* if (!dbus_message_has_path(msg, u->path)) */
1208 /* goto done; */
1209
1210 /* if (dbus_message_is_signal(msg, "org.bluez.Headset", "PropertyChanged") || */
1211 /* dbus_message_is_signal(msg, "org.bluez.AudioSink", "PropertyChanged")) { */
1212
1213 /* struct device *d; */
1214 /* const char *profile; */
1215 /* DBusMessageIter variant_i; */
1216 /* dbus_uint16_t gain; */
1217
1218 /* if (!dbus_message_iter_init(msg, &arg_i)) { */
1219 /* pa_log("dbus: message has no parameters"); */
1220 /* goto done; */
1221 /* } */
1222
1223 /* if (dbus_message_iter_get_arg_type(&arg_i) != DBUS_TYPE_STRING) { */
1224 /* pa_log("Property name not a string."); */
1225 /* goto done; */
1226 /* } */
1227
1228 /* dbus_message_iter_get_basic(&arg_i, &value); */
1229
1230 /* if (!dbus_message_iter_next(&arg_i)) { */
1231 /* pa_log("Property value missing"); */
1232 /* goto done; */
1233 /* } */
1234
1235 /* if (dbus_message_iter_get_arg_type(&arg_i) != DBUS_TYPE_VARIANT) { */
1236 /* pa_log("Property value not a variant."); */
1237 /* goto done; */
1238 /* } */
1239
1240 /* dbus_message_iter_recurse(&arg_i, &variant_i); */
1241
1242 /* if (dbus_message_iter_get_arg_type(&variant_i) != DBUS_TYPE_UINT16) { */
1243 /* dbus_message_iter_get_basic(&variant_i, &gain); */
1244
1245 /* if (pa_streq(value, "SpeakerGain")) { */
1246 /* pa_log("spk gain: %d", gain); */
1247 /* pa_cvolume_set(&u->sink->virtual_volume, 1, (pa_volume_t) (gain * PA_VOLUME_NORM / 15)); */
1248 /* pa_subscription_post(u->sink->core, PA_SUBSCRIPTION_EVENT_SINK|PA_SUBSCRIPTION_EVENT_CHANGE, u->sink->index); */
1249 /* } else { */
1250 /* pa_log("mic gain: %d", gain); */
1251 /* if (!u->source) */
1252 /* goto done; */
1253
1254 /* pa_cvolume_set(&u->source->virtual_volume, 1, (pa_volume_t) (gain * PA_VOLUME_NORM / 15)); */
1255 /* pa_subscription_post(u->source->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, u->source->index); */
1256 /* } */
1257 /* } */
1258 /* } */
1259
1260 /* done: */
1261 /* dbus_error_free(&err); */
1262 /* return DBUS_HANDLER_RESULT_NOT_YET_HANDLED; */
1263 /* } */
1264
1265 /* static int sink_get_volume_cb(pa_sink *s) { */
1266 /* struct userdata *u = s->userdata; */
1267 /* pa_assert(u); */
1268
1269 /* /\* refresh? *\/ */
1270
1271 /* return 0; */
1272 /* } */
1273
1274 /* static int source_get_volume_cb(pa_source *s) { */
1275 /* struct userdata *u = s->userdata; */
1276 /* pa_assert(u); */
1277
1278 /* /\* refresh? *\/ */
1279
1280 /* return 0; */
1281 /* } */
1282
1283 /* static int sink_set_volume_cb(pa_sink *s) { */
1284 /* DBusError e; */
1285 /* DBusMessage *m, *r; */
1286 /* DBusMessageIter it, itvar; */
1287 /* dbus_uint16_t vol; */
1288 /* const char *spkgain = "SpeakerGain"; */
1289 /* struct userdata *u = s->userdata; */
1290 /* pa_assert(u); */
1291
1292 /* dbus_error_init(&e); */
1293
1294 /* vol = ((float) pa_cvolume_max(&s->virtual_volume) / PA_VOLUME_NORM) * 15; */
1295 /* pa_log_debug("set headset volume: %d", vol); */
1296
1297 /* pa_assert_se(m = dbus_message_new_method_call("org.bluez", u->path, "org.bluez.Headset", "SetProperty")); */
1298 /* dbus_message_iter_init_append(m, &it); */
1299 /* dbus_message_iter_append_basic(&it, DBUS_TYPE_STRING, &spkgain); */
1300 /* dbus_message_iter_open_container(&it, DBUS_TYPE_VARIANT, DBUS_TYPE_UINT16_AS_STRING, &itvar); */
1301 /* dbus_message_iter_append_basic(&itvar, DBUS_TYPE_UINT16, &vol); */
1302 /* dbus_message_iter_close_container(&it, &itvar); */
1303
1304 /* r = dbus_connection_send_with_reply_and_block(pa_dbus_connection_get(u->conn), m, -1, &e); */
1305
1306 /* finish: */
1307 /* if (m) */
1308 /* dbus_message_unref(m); */
1309 /* if (r) */
1310 /* dbus_message_unref(r); */
1311
1312 /* dbus_error_free(&e); */
1313
1314 /* return 0; */
1315 /* } */
1316
1317 /* static int source_set_volume_cb(pa_source *s) { */
1318 /* dbus_uint16_t vol; */
1319 /* struct userdata *u = s->userdata; */
1320 /* pa_assert(u); */
1321
1322 /* vol = ((float)pa_cvolume_max(&s->virtual_volume) / PA_VOLUME_NORM) * 15; */
1323
1324 /* pa_log_debug("set headset mic volume: %d (not implemented yet)", vol); */
1325
1326 /* return 0; */
1327 /* } */
1328
1329 static char *get_name(const char *type, pa_modargs *ma, const char *device_id, pa_bool_t *namereg_fail) {
1330 char *t;
1331 const char *n;
1332
1333 pa_assert(type);
1334 pa_assert(ma);
1335 pa_assert(device_id);
1336 pa_assert(namereg_fail);
1337
1338 t = pa_sprintf_malloc("%s_name", type);
1339 n = pa_modargs_get_value(ma, t, NULL);
1340 pa_xfree(t);
1341
1342 if (n) {
1343 *namereg_fail = TRUE;
1344 return pa_xstrdup(n);
1345 }
1346
1347 if ((n = pa_modargs_get_value(ma, "name", NULL)))
1348 *namereg_fail = TRUE;
1349 else {
1350 n = device_id;
1351 *namereg_fail = FALSE;
1352 }
1353
1354 return pa_sprintf_malloc("bluez_%s.%s", type, n);
1355 }
1356
1357 #define USE_SCO_OVER_PCM(u) (u->profile == PROFILE_HSP && (u->hsp.sco_sink && u->hsp.sco_source))
1358
1359 static void sco_over_pcm_state_update(struct userdata *u) {
1360 pa_assert(u);
1361 pa_assert(USE_SCO_OVER_PCM(u));
1362
1363 if (PA_SINK_IS_OPENED(pa_sink_get_state(u->hsp.sco_sink)) ||
1364 PA_SOURCE_IS_OPENED(pa_source_get_state(u->hsp.sco_source))) {
1365
1366 if (u->service_fd > 0)
1367 return;
1368
1369 pa_log_debug("Resuming SCO over PCM");
1370 if ((init_bt(u) < 0) || (init_profile(u) < 0))
1371 pa_log("Can't resume SCO over PCM");
1372
1373 } else {
1374
1375 if (u->service_fd <= 0)
1376 return;
1377
1378 pa_log_debug("Closing SCO over PCM");
1379 pa_close(u->service_fd);
1380 u->service_fd = -1;
1381 }
1382 }
1383
1384 static pa_hook_result_t sink_state_changed_cb(pa_core *c, pa_sink *s, struct userdata *u) {
1385 pa_assert(c);
1386 pa_sink_assert_ref(s);
1387 pa_assert(u);
1388
1389 if (s != u->hsp.sco_sink)
1390 return PA_HOOK_OK;
1391
1392 sco_over_pcm_state_update(u);
1393
1394 return PA_HOOK_OK;
1395 }
1396
1397 static pa_hook_result_t source_state_changed_cb(pa_core *c, pa_source *s, struct userdata *u) {
1398 pa_assert(c);
1399 pa_source_assert_ref(s);
1400 pa_assert(u);
1401
1402 if (s != u->hsp.sco_source)
1403 return PA_HOOK_OK;
1404
1405 sco_over_pcm_state_update(u);
1406
1407 return PA_HOOK_OK;
1408 }
1409
1410 static int add_sink(struct userdata *u) {
1411
1412 if (USE_SCO_OVER_PCM(u)) {
1413 pa_proplist *p;
1414
1415 u->sink = u->hsp.sco_sink;
1416 p = pa_proplist_new();
1417 pa_proplist_sets(p, "bluetooth.protocol", "sco");
1418 pa_proplist_update(u->sink->proplist, PA_UPDATE_MERGE, p);
1419 pa_proplist_free(p);
1420
1421 if (!u->hsp.sink_state_changed_slot)
1422 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);
1423
1424 } else {
1425 pa_sink_new_data data;
1426 pa_bool_t b;
1427
1428 pa_sink_new_data_init(&data);
1429 data.driver = __FILE__;
1430 data.module = u->module;
1431 pa_sink_new_data_set_sample_spec(&data, &u->sample_spec);
1432 pa_proplist_sets(data.proplist, "bluetooth.protocol", u->profile == PROFILE_A2DP ? "a2dp" : "sco");
1433 data.card = u->card;
1434 data.name = get_name("sink", u->modargs, u->device->address, &b);
1435 data.namereg_fail = b;
1436
1437 u->sink = pa_sink_new(u->core, &data, PA_SINK_HARDWARE|PA_SINK_LATENCY);
1438 pa_sink_new_data_done(&data);
1439
1440 if (!u->sink) {
1441 pa_log_error("Failed to create sink");
1442 return -1;
1443 }
1444
1445 u->sink->userdata = u;
1446 u->sink->parent.process_msg = sink_process_msg;
1447 }
1448
1449 /* u->sink->get_volume = sink_get_volume_cb; */
1450 /* u->sink->set_volume = sink_set_volume_cb; */
1451
1452 return 0;
1453 }
1454
1455 static int add_source(struct userdata *u) {
1456 pa_proplist *p;
1457
1458 if (USE_SCO_OVER_PCM(u)) {
1459 u->source = u->hsp.sco_source;
1460 p = pa_proplist_new();
1461 pa_proplist_sets(p, "bluetooth.protocol", "sco");
1462 pa_proplist_update(u->source->proplist, PA_UPDATE_MERGE, p);
1463 pa_proplist_free(p);
1464
1465 if (!u->hsp.source_state_changed_slot)
1466 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);
1467
1468 } else {
1469 pa_source_new_data data;
1470 pa_bool_t b;
1471
1472 pa_source_new_data_init(&data);
1473 data.driver = __FILE__;
1474 data.module = u->module;
1475 pa_source_new_data_set_sample_spec(&data, &u->sample_spec);
1476 pa_proplist_sets(data.proplist, "bluetooth.protocol", u->profile == PROFILE_A2DP ? "a2dp" : "sco");
1477 data.card = u->card;
1478 data.name = get_name("source", u->modargs, u->device->address, &b);
1479 data.namereg_fail = b;
1480
1481 u->source = pa_source_new(u->core, &data, PA_SOURCE_HARDWARE|PA_SOURCE_LATENCY);
1482 pa_source_new_data_done(&data);
1483
1484 if (!u->source) {
1485 pa_log_error("Failed to create source");
1486 return -1;
1487 }
1488
1489 u->source->userdata = u;
1490 u->source->parent.process_msg = source_process_msg;
1491 }
1492
1493 /* u->source->get_volume = source_get_volume_cb; */
1494 /* u->source->set_volume = source_set_volume_cb; */
1495
1496 p = pa_proplist_new();
1497 pa_proplist_sets(p, "bluetooth.nrec", pa_yes_no(u->hsp.pcm_capabilities.flags & BT_PCM_FLAG_NREC));
1498 pa_proplist_update(u->source->proplist, PA_UPDATE_MERGE, p);
1499 pa_proplist_free(p);
1500
1501 return 0;
1502 }
1503
1504 static void shutdown_bt(struct userdata *u) {
1505 pa_assert(u);
1506
1507 if (u->stream_fd >= 0) {
1508 pa_close(u->stream_fd);
1509 u->stream_fd = -1;
1510 }
1511
1512 if (u->service_fd >= 0) {
1513 pa_close(u->service_fd);
1514 u->service_fd = -1;
1515 }
1516 }
1517
1518 static int init_bt(struct userdata *u) {
1519 pa_assert(u);
1520
1521 shutdown_bt(u);
1522
1523 u->stream_write_type = u->stream_read_type = 0;
1524 u->service_write_type = u->service_write_type = 0;
1525
1526 if ((u->service_fd = bt_audio_service_open()) < 0) {
1527 pa_log_error("Couldn't connect to bluetooth audio service");
1528 return -1;
1529 }
1530
1531 pa_log_debug("Connected to the bluetooth audio service");
1532
1533 return 0;
1534 }
1535
1536 static int setup_bt(struct userdata *u) {
1537 pa_assert(u);
1538
1539 if (get_caps(u) < 0)
1540 return -1;
1541
1542 pa_log_debug("Got device capabilities");
1543
1544 if (set_conf(u) < 0)
1545 return -1;
1546
1547 pa_log_debug("Connection to the device configured");
1548
1549 if (USE_SCO_OVER_PCM(u)) {
1550 pa_log_debug("Configured to use SCO over PCM");
1551 return 0;
1552 }
1553
1554 pa_log_debug("Got the stream socket");
1555
1556 return 0;
1557 }
1558
1559 static int init_profile(struct userdata *u) {
1560 int r = 0;
1561 pa_assert(u);
1562
1563 if (setup_bt(u) < 0)
1564 return -1;
1565
1566 if (u->profile == PROFILE_A2DP ||
1567 u->profile == PROFILE_HSP)
1568 if (add_sink(u) < 0)
1569 r = -1;
1570
1571 if (u->profile == PROFILE_HSP)
1572 if (add_source(u) < 0)
1573 r = -1;
1574
1575 return r;
1576 }
1577
1578 static void stop_thread(struct userdata *u) {
1579 pa_assert(u);
1580
1581 if (u->thread) {
1582 pa_asyncmsgq_send(u->thread_mq.inq, NULL, PA_MESSAGE_SHUTDOWN, NULL, 0, NULL);
1583 pa_thread_free(u->thread);
1584 u->thread = NULL;
1585 }
1586
1587 if (u->rtpoll_item) {
1588 pa_rtpoll_item_free(u->rtpoll_item);
1589 u->rtpoll_item = NULL;
1590 }
1591
1592 if (u->hsp.sink_state_changed_slot) {
1593 pa_hook_slot_free(u->hsp.sink_state_changed_slot);
1594 u->hsp.sink_state_changed_slot = NULL;
1595 }
1596
1597 if (u->hsp.source_state_changed_slot) {
1598 pa_hook_slot_free(u->hsp.source_state_changed_slot);
1599 u->hsp.source_state_changed_slot = NULL;
1600 }
1601
1602 if (u->sink) {
1603 pa_sink_unref(u->sink);
1604 u->sink = NULL;
1605 }
1606
1607 if (u->source) {
1608 pa_source_unref(u->source);
1609 u->source = NULL;
1610 }
1611
1612 if (u->rtpoll) {
1613 pa_thread_mq_done(&u->thread_mq);
1614
1615 pa_rtpoll_free(u->rtpoll);
1616 u->rtpoll = NULL;
1617 }
1618 }
1619
1620 static int start_thread(struct userdata *u) {
1621 pa_assert(u);
1622 pa_assert(!u->thread);
1623 pa_assert(!u->rtpoll);
1624 pa_assert(!u->rtpoll_item);
1625
1626 if (USE_SCO_OVER_PCM(u)) {
1627 pa_sink_ref(u->sink);
1628 pa_source_ref(u->source);
1629 return 0;
1630 }
1631
1632 u->rtpoll = pa_rtpoll_new();
1633 pa_thread_mq_init(&u->thread_mq, u->core->mainloop, u->rtpoll);
1634
1635 if (!(u->thread = pa_thread_new(thread_func, u))) {
1636 pa_log_error("Failed to create IO thread");
1637 stop_thread(u);
1638 return -1;
1639 }
1640
1641 if (u->sink) {
1642 pa_sink_set_asyncmsgq(u->sink, u->thread_mq.inq);
1643 pa_sink_set_rtpoll(u->sink, u->rtpoll);
1644 pa_sink_put(u->sink);
1645 }
1646
1647 if (u->source) {
1648 pa_source_set_asyncmsgq(u->source, u->thread_mq.inq);
1649 pa_source_set_rtpoll(u->source, u->rtpoll);
1650 pa_source_put(u->source);
1651 }
1652
1653 return 0;
1654 }
1655
1656 static int card_set_profile(pa_card *c, pa_card_profile *new_profile) {
1657 struct userdata *u;
1658 enum profile *d;
1659 pa_queue *inputs = NULL, *outputs = NULL;
1660
1661 pa_assert(c);
1662 pa_assert(new_profile);
1663 pa_assert_se(u = c->userdata);
1664
1665 d = PA_CARD_PROFILE_DATA(new_profile);
1666
1667 if (u->sink) {
1668 inputs = pa_sink_move_all_start(u->sink);
1669 if (!USE_SCO_OVER_PCM(u))
1670 pa_sink_unlink(u->sink);
1671 }
1672
1673 if (u->source) {
1674 outputs = pa_source_move_all_start(u->source);
1675 if (!USE_SCO_OVER_PCM(u))
1676 pa_source_unlink(u->source);
1677 }
1678
1679 stop_thread(u);
1680 shutdown_bt(u);
1681
1682 if (u->write_memchunk.memblock) {
1683 pa_memblock_unref(u->write_memchunk.memblock);
1684 pa_memchunk_reset(&u->write_memchunk);
1685 }
1686
1687 u->profile = *d;
1688 u->sample_spec = u->requested_sample_spec;
1689
1690 init_bt(u);
1691 init_profile(u);
1692
1693 if (u->sink || u->source)
1694 start_thread(u);
1695
1696 if (inputs) {
1697 if (u->sink)
1698 pa_sink_move_all_finish(u->sink, inputs, FALSE);
1699 else
1700 pa_sink_move_all_fail(inputs);
1701 }
1702
1703 if (outputs) {
1704 if (u->source)
1705 pa_source_move_all_finish(u->source, outputs, FALSE);
1706 else
1707 pa_source_move_all_fail(outputs);
1708 }
1709
1710 return 0;
1711 }
1712
1713 static int add_card(struct userdata *u, const char * default_profile) {
1714 pa_card_new_data data;
1715 pa_bool_t b;
1716 pa_card_profile *p;
1717 enum profile *d;
1718 const char *ff;
1719 char *n;
1720
1721 pa_card_new_data_init(&data);
1722 data.driver = __FILE__;
1723 data.module = u->module;
1724
1725 n = pa_bluetooth_cleanup_name(u->device->name);
1726 pa_proplist_sets(data.proplist, PA_PROP_DEVICE_DESCRIPTION, n);
1727 pa_xfree(n);
1728 pa_proplist_sets(data.proplist, PA_PROP_DEVICE_STRING, u->device->address);
1729 pa_proplist_sets(data.proplist, PA_PROP_DEVICE_API, "bluez");
1730 pa_proplist_sets(data.proplist, PA_PROP_DEVICE_CLASS, "sound");
1731 pa_proplist_sets(data.proplist, PA_PROP_DEVICE_CONNECTOR, "bluetooth");
1732 if ((ff = pa_bluetooth_get_form_factor(u->device->class)))
1733 pa_proplist_sets(data.proplist, PA_PROP_DEVICE_FORM_FACTOR, ff);
1734 pa_proplist_sets(data.proplist, "bluez.path", u->device->path);
1735 pa_proplist_setf(data.proplist, "bluez.class", "0x%06x", (unsigned) u->device->class);
1736 pa_proplist_sets(data.proplist, "bluez.name", u->device->name);
1737 data.name = get_name("card", u->modargs, u->device->address, &b);
1738 data.namereg_fail = b;
1739
1740 data.profiles = pa_hashmap_new(pa_idxset_string_hash_func, pa_idxset_string_compare_func);
1741
1742 if (u->device->audio_sink_info_valid > 0) {
1743 p = pa_card_profile_new("a2dp", _("High Fidelity Playback (A2DP)"), sizeof(enum profile));
1744 p->priority = 10;
1745 p->n_sinks = 1;
1746 p->n_sources = 0;
1747 p->max_sink_channels = 2;
1748 p->max_source_channels = 0;
1749
1750 d = PA_CARD_PROFILE_DATA(p);
1751 *d = PROFILE_A2DP;
1752
1753 pa_hashmap_put(data.profiles, p->name, p);
1754 }
1755
1756 if (u->device->headset_info_valid > 0) {
1757 p = pa_card_profile_new("hsp", _("Telephony Duplex (HSP/HFP)"), sizeof(enum profile));
1758 p->priority = 20;
1759 p->n_sinks = 1;
1760 p->n_sources = 1;
1761 p->max_sink_channels = 1;
1762 p->max_source_channels = 1;
1763
1764 d = PA_CARD_PROFILE_DATA(p);
1765 *d = PROFILE_HSP;
1766
1767 pa_hashmap_put(data.profiles, p->name, p);
1768 }
1769
1770 pa_assert(!pa_hashmap_isempty(data.profiles));
1771
1772 p = pa_card_profile_new("off", _("Off"), sizeof(enum profile));
1773 d = PA_CARD_PROFILE_DATA(p);
1774 *d = PROFILE_OFF;
1775 pa_hashmap_put(data.profiles, p->name, p);
1776
1777 if (default_profile) {
1778 if (pa_hashmap_get(data.profiles, default_profile))
1779 pa_card_new_data_set_profile(&data, default_profile);
1780 else
1781 pa_log_warn("Profile '%s' not valid or not supported by device.", default_profile);
1782 }
1783
1784 u->card = pa_card_new(u->core, &data);
1785 pa_card_new_data_done(&data);
1786
1787 if (!u->card) {
1788 pa_log("Failed to allocate card.");
1789 return -1;
1790 }
1791
1792 u->card->userdata = u;
1793 u->card->set_profile = card_set_profile;
1794
1795 d = PA_CARD_PROFILE_DATA(u->card->active_profile);
1796 u->profile = *d;
1797
1798 return 0;
1799 }
1800
1801 static int setup_dbus(struct userdata *u) {
1802 DBusError error;
1803
1804 dbus_error_init(&error);
1805
1806 u->connection = pa_dbus_bus_get(u->core, DBUS_BUS_SYSTEM, &error);
1807 if (dbus_error_is_set(&error) || (!u->connection)) {
1808 pa_log("Failed to get D-Bus connection: %s", error.message);
1809 dbus_error_free(&error);
1810 return -1;
1811 }
1812
1813 return 0;
1814 }
1815
1816 static int find_device(struct userdata *u, const char *address, const char *path) {
1817 pa_assert(u);
1818
1819 if (!address && !path) {
1820 pa_log_error("Failed to get device address/path from module arguments.");
1821 return -1;
1822 }
1823
1824 if (path) {
1825 if (!(u->device = pa_bluetooth_get_device(pa_dbus_connection_get(u->connection), path))) {
1826 pa_log_error("%s is not a valid BlueZ audio device.", path);
1827 return -1;
1828 }
1829
1830 if (address && !(pa_streq(u->device->address, address))) {
1831 pa_log_error("Passed path %s and address %s don't match.", path, address);
1832 return -1;
1833 }
1834 } else {
1835 if (!(u->device = pa_bluetooth_find_device(pa_dbus_connection_get(u->connection), address))) {
1836 pa_log_error("%s is not known.", address);
1837 return -1;
1838 }
1839 }
1840
1841 return 0;
1842 }
1843
1844 int pa__init(pa_module* m) {
1845 pa_modargs *ma;
1846 uint32_t channels;
1847 struct userdata *u;
1848 const char *address, *path;
1849
1850 pa_assert(m);
1851
1852 if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
1853 pa_log_error("Failed to parse module arguments");
1854 goto fail;
1855 }
1856
1857 m->userdata = u = pa_xnew0(struct userdata, 1);
1858 u->module = m;
1859 u->core = m->core;
1860 u->service_fd = -1;
1861 u->stream_fd = -1;
1862 u->read_smoother = pa_smoother_new(PA_USEC_PER_SEC, PA_USEC_PER_SEC*2, TRUE, 10);
1863 u->sample_spec = m->core->default_sample_spec;
1864 u->modargs = ma;
1865
1866 if (pa_modargs_get_value(ma, "sco_sink", NULL) &&
1867 !(u->hsp.sco_sink = pa_namereg_get(m->core, pa_modargs_get_value(ma, "sco_sink", NULL), PA_NAMEREG_SINK))) {
1868 pa_log("SCO sink not found");
1869 goto fail;
1870 }
1871
1872 if (pa_modargs_get_value(ma, "sco_source", NULL) &&
1873 !(u->hsp.sco_source = pa_namereg_get(m->core, pa_modargs_get_value(ma, "sco_source", NULL), PA_NAMEREG_SOURCE))) {
1874 pa_log("SCO source not found");
1875 goto fail;
1876 }
1877
1878 if (pa_modargs_get_value_u32(ma, "rate", &u->sample_spec.rate) < 0 ||
1879 u->sample_spec.rate <= 0 || u->sample_spec.rate > PA_RATE_MAX) {
1880 pa_log_error("Failed to get rate from module arguments");
1881 goto fail;
1882 }
1883
1884 channels = u->sample_spec.channels;
1885 if (pa_modargs_get_value_u32(ma, "channels", &channels) < 0 ||
1886 channels <= 0 || channels > PA_CHANNELS_MAX) {
1887 pa_log_error("Failed to get channels from module arguments");
1888 goto fail;
1889 }
1890 u->sample_spec.channels = (uint8_t) channels;
1891 u->requested_sample_spec = u->sample_spec;
1892
1893 if (setup_dbus(u) < 0)
1894 goto fail;
1895
1896 address = pa_modargs_get_value(ma, "address", NULL);
1897 path = pa_modargs_get_value(ma, "path", NULL);
1898
1899 if (find_device(u, address, path) < 0)
1900 goto fail;
1901
1902 pa_assert(u->device);
1903
1904 /* Add the card structure. This will also initialize the default profile */
1905 if (add_card(u, pa_modargs_get_value(ma, "profile", NULL)) < 0)
1906 goto fail;
1907
1908 /* Connect to the BT service and query capabilities */
1909 if (init_bt(u) < 0)
1910 goto fail;
1911
1912 if (init_profile(u) < 0)
1913 goto fail;
1914
1915 /* if (u->path) { */
1916 /* DBusError err; */
1917 /* dbus_error_init(&err); */
1918 /* char *t; */
1919
1920
1921 /* if (!dbus_connection_add_filter(pa_dbus_connection_get(u->conn), filter_cb, u, NULL)) { */
1922 /* pa_log_error("Failed to add filter function"); */
1923 /* goto fail; */
1924 /* } */
1925
1926 /* if (u->transport == BT_CAPABILITIES_TRANSPORT_SCO || */
1927 /* u->transport == BT_CAPABILITIES_TRANSPORT_ANY) { */
1928 /* t = pa_sprintf_malloc("type='signal',sender='org.bluez',interface='org.bluez.Headset',member='PropertyChanged',path='%s'", u->path); */
1929 /* dbus_bus_add_match(pa_dbus_connection_get(u->conn), t, &err); */
1930 /* pa_xfree(t); */
1931
1932 /* if (dbus_error_is_set(&err)) { */
1933 /* pa_log_error("Unable to subscribe to org.bluez.Headset signals: %s: %s", err.name, err.message); */
1934 /* goto fail; */
1935 /* } */
1936 /* } */
1937
1938 /* if (u->transport == BT_CAPABILITIES_TRANSPORT_A2DP || */
1939 /* u->transport == BT_CAPABILITIES_TRANSPORT_ANY) { */
1940 /* t = pa_sprintf_malloc("type='signal',sender='org.bluez',interface='org.bluez.AudioSink',member='PropertyChanged',path='%s'", u->path); */
1941 /* dbus_bus_add_match(pa_dbus_connection_get(u->conn), t, &err); */
1942 /* pa_xfree(t); */
1943
1944 /* if (dbus_error_is_set(&err)) { */
1945 /* pa_log_error("Unable to subscribe to org.bluez.AudioSink signals: %s: %s", err.name, err.message); */
1946 /* goto fail; */
1947 /* } */
1948 /* } */
1949 /* } */
1950
1951 if (start_thread(u) < 0)
1952 goto fail;
1953
1954 return 0;
1955
1956 fail:
1957 pa__done(m);
1958 return -1;
1959 }
1960
1961 int pa__get_n_used(pa_module *m) {
1962 struct userdata *u;
1963
1964 pa_assert(m);
1965 pa_assert_se(u = m->userdata);
1966
1967 return
1968 (u->sink ? pa_sink_linked_by(u->sink) : 0) +
1969 (u->source ? pa_source_linked_by(u->source) : 0);
1970 }
1971
1972 void pa__done(pa_module *m) {
1973 struct userdata *u;
1974 pa_assert(m);
1975
1976 if (!(u = m->userdata))
1977 return;
1978
1979 if (u->sink && !USE_SCO_OVER_PCM(u))
1980 pa_sink_unlink(u->sink);
1981
1982 if (u->source && !USE_SCO_OVER_PCM(u))
1983 pa_source_unlink(u->source);
1984
1985 stop_thread(u);
1986
1987 if (u->connection) {
1988 /* DBusError error; */
1989 /* char *t; */
1990
1991 /* if (u->transport == BT_CAPABILITIES_TRANSPORT_SCO || */
1992 /* u->transport == BT_CAPABILITIES_TRANSPORT_ANY) { */
1993
1994 /* t = pa_sprintf_malloc("type='signal',sender='org.bluez',interface='org.bluez.Headset',member='PropertyChanged',path='%s'", u->path); */
1995 /* dbus_error_init(&error); */
1996 /* dbus_bus_remove_match(pa_dbus_connection_get(u->conn), t, &error); */
1997 /* dbus_error_free(&error); */
1998 /* pa_xfree(t); */
1999 /* } */
2000
2001 /* if (u->transport == BT_CAPABILITIES_TRANSPORT_A2DP || */
2002 /* u->transport == BT_CAPABILITIES_TRANSPORT_ANY) { */
2003
2004 /* t = pa_sprintf_malloc("type='signal',sender='org.bluez',interface='org.bluez.AudioSink',member='PropertyChanged',path='%s'", u->path); */
2005 /* dbus_error_init(&error); */
2006 /* dbus_bus_remove_match(pa_dbus_connection_get(u->conn), t, &error); */
2007 /* dbus_error_free(&error); */
2008 /* pa_xfree(t); */
2009 /* } */
2010
2011 /* dbus_connection_remove_filter(pa_dbus_connection_get(u->conn), filter_cb, u); */
2012 pa_dbus_connection_unref(u->connection);
2013 }
2014
2015 if (u->card)
2016 pa_card_free(u->card);
2017
2018 if (u->read_smoother)
2019 pa_smoother_free(u->read_smoother);
2020
2021 shutdown_bt(u);
2022
2023 if (u->device)
2024 pa_bluetooth_device_free(u->device);
2025
2026 if (u->write_memchunk.memblock)
2027 pa_memblock_unref(u->write_memchunk.memblock);
2028
2029 if (u->a2dp.buffer)
2030 pa_xfree(u->a2dp.buffer);
2031
2032 sbc_finish(&u->a2dp.sbc);
2033
2034 if (u->modargs)
2035 pa_modargs_free(u->modargs);
2036
2037 pa_xfree(u);
2038 }