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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 static int setup_stream_fd(struct userdata *u) {
657 union {
658 bt_audio_msg_header_t rsp;
659 struct bt_start_stream_req start_req;
660 struct bt_start_stream_rsp start_rsp;
661 struct bt_new_stream_ind streamfd_ind;
662 bt_audio_error_t error;
663 uint8_t buf[BT_SUGGESTED_BUFFER_SIZE];
664 } msg;
665
666 pa_assert(u);
667 pa_assert(u->stream_fd < 0);
668
669 memset(msg.buf, 0, BT_SUGGESTED_BUFFER_SIZE);
670 msg.start_req.h.type = BT_REQUEST;
671 msg.start_req.h.name = BT_START_STREAM;
672 msg.start_req.h.length = sizeof(msg.start_req);
673
674 if (service_send(u, &msg.start_req.h) < 0)
675 return -1;
676
677 if (service_expect(u, &msg.rsp, sizeof(msg), BT_START_STREAM, sizeof(msg.start_rsp)) < 0)
678 return -1;
679
680 if (service_expect(u, &msg.rsp, sizeof(msg), BT_NEW_STREAM, sizeof(msg.streamfd_ind)) < 0)
681 return -1;
682
683 if ((u->stream_fd = bt_audio_service_get_data_fd(u->service_fd)) < 0) {
684 pa_log("Failed to get stream fd from audio service.");
685 return -1;
686 }
687
688 /* setsockopt(u->stream_fd, SOL_SCO, SCO_TXBUFS, &period_count, sizeof(period_count)); */
689 /* setsockopt(u->stream_fd, SOL_SCO, SCO_SNDBUF, &period_count, sizeof(period_count)); */
690
691 pa_make_fd_nonblock(u->stream_fd);
692 pa_make_socket_low_delay(u->stream_fd);
693
694 return 0;
695 }
696
697 static int sink_process_msg(pa_msgobject *o, int code, void *data, int64_t offset, pa_memchunk *chunk) {
698 struct userdata *u = PA_SINK(o)->userdata;
699 pa_assert(u->sink == PA_SINK(o));
700
701 pa_log_debug("got message: %d", code);
702 switch (code) {
703
704 case PA_SINK_MESSAGE_SET_STATE:
705
706 switch ((pa_sink_state_t) PA_PTR_TO_UINT(data)) {
707
708 case PA_SINK_SUSPENDED:
709 pa_assert(PA_SINK_IS_OPENED(u->sink->thread_info.state));
710 break;
711
712 case PA_SINK_IDLE:
713 case PA_SINK_RUNNING:
714 if (!PA_SINK_IS_OPENED(u->sink->thread_info.state))
715 u->started_at = pa_rtclock_usec();
716
717 break;
718
719 case PA_SINK_UNLINKED:
720 case PA_SINK_INIT:
721 case PA_SINK_INVALID_STATE:
722 ;
723 }
724 break;
725
726 case PA_SINK_MESSAGE_GET_LATENCY: {
727 *((pa_usec_t*) data) = 0;
728 return 0;
729 }
730
731 }
732
733 return pa_sink_process_msg(o, code, data, offset, chunk);
734 }
735
736 static int source_process_msg(pa_msgobject *o, int code, void *data, int64_t offset, pa_memchunk *chunk) {
737 struct userdata *u = PA_SOURCE(o)->userdata;
738
739 pa_assert(u->source == PA_SOURCE(o));
740
741 pa_log_debug("got message: %d", code);
742 switch (code) {
743
744 case PA_SOURCE_MESSAGE_SET_STATE:
745
746 switch ((pa_source_state_t) PA_PTR_TO_UINT(data)) {
747
748 case PA_SOURCE_SUSPENDED:
749 pa_smoother_pause(u->read_smoother, pa_rtclock_usec());
750 break;
751
752 case PA_SOURCE_IDLE:
753 case PA_SOURCE_RUNNING:
754 if (u->source->thread_info.state == PA_SOURCE_SUSPENDED)
755 pa_smoother_resume(u->read_smoother, pa_rtclock_usec());
756 break;
757
758 case PA_SOURCE_UNLINKED:
759 case PA_SOURCE_INIT:
760 case PA_SOURCE_INVALID_STATE:
761 ;
762 }
763 break;
764
765 case PA_SOURCE_MESSAGE_GET_LATENCY: {
766 *((pa_usec_t*) data) = 0;
767 return 0;
768 }
769
770 }
771
772 return pa_source_process_msg(o, code, data, offset, chunk);
773 }
774
775 static int hsp_process_render(struct userdata *u) {
776 int ret = 0;
777 pa_memchunk memchunk;
778
779 pa_assert(u);
780 pa_assert(u->profile == PROFILE_HSP);
781 pa_assert(u->sink);
782
783 pa_sink_render_full(u->sink, u->block_size, &memchunk);
784
785 for (;;) {
786 ssize_t l;
787 const void *p;
788
789 p = (const uint8_t*) pa_memblock_acquire(memchunk.memblock) + memchunk.index;
790 l = pa_write(u->stream_fd, p, memchunk.length, &u->stream_write_type);
791 pa_memblock_release(memchunk.memblock);
792
793 pa_log_debug("Memblock written to socket: %lli bytes", (long long) l);
794
795 pa_assert(l != 0);
796
797 if (l < 0) {
798 if (errno == EINTR)
799 continue;
800 else {
801 pa_log_error("Failed to write data to SCO socket: %s", pa_cstrerror(errno));
802 ret = -1;
803 break;
804 }
805 } else {
806 pa_assert((size_t) l <= memchunk.length);
807
808 memchunk.index += (size_t) l;
809 memchunk.length -= (size_t) l;
810
811 u->write_index += (uint64_t) l;
812
813 if (memchunk.length <= 0)
814 break;
815 }
816 }
817
818 pa_memblock_unref(memchunk.memblock);
819
820 return ret;
821 }
822
823 static int hsp_process_push(struct userdata *u) {
824 int ret = 0;
825 pa_memchunk memchunk;
826
827 pa_assert(u);
828 pa_assert(u->profile == PROFILE_HSP);
829 pa_assert(u->source);
830
831 memchunk.memblock = pa_memblock_new(u->core->mempool, u->block_size);
832 memchunk.index = memchunk.length = 0;
833
834 for (;;) {
835 ssize_t l;
836 void *p;
837
838 p = pa_memblock_acquire(memchunk.memblock);
839 l = pa_read(u->stream_fd, p, pa_memblock_get_length(memchunk.memblock), &u->stream_read_type);
840 pa_memblock_release(memchunk.memblock);
841
842 if (l <= 0) {
843 if (l < 0 && errno == EINTR)
844 continue;
845 else {
846 pa_log_error("Failed to read data from SCO socket: %s", ret < 0 ? pa_cstrerror(errno) : "EOF");
847 ret = -1;
848 break;
849 }
850 } else {
851 memchunk.length = (size_t) l;
852 u->read_index += (uint64_t) l;
853
854 pa_source_post(u->source, &memchunk);
855 break;
856 }
857 }
858
859 pa_memblock_unref(memchunk.memblock);
860
861 return ret;
862 }
863
864 static int a2dp_process_render(struct userdata *u) {
865 size_t frame_size;
866 struct a2dp_info *a2dp;
867 struct rtp_header *header;
868 struct rtp_payload *payload;
869 size_t left;
870 void *d;
871 const void *p;
872 unsigned frame_count;
873 int written;
874 uint64_t writing_at;
875
876 pa_assert(u);
877 pa_assert(u->profile == PROFILE_A2DP);
878 pa_assert(u->sink);
879
880 a2dp = &u->a2dp;
881
882 if (a2dp->buffer_size < u->link_mtu) {
883 a2dp->buffer_size = 2*u->link_mtu;
884 pa_xfree(a2dp->buffer);
885 a2dp->buffer = pa_xmalloc(a2dp->buffer_size);
886 }
887
888 header = (struct rtp_header*) a2dp->buffer;
889 payload = (struct rtp_payload*) ((uint8_t*) a2dp->buffer + sizeof(*header));
890 d = (uint8_t*) a2dp->buffer + sizeof(*header) + sizeof(*payload);
891 left = a2dp->buffer_size - sizeof(*header) - sizeof(*payload);
892
893 frame_size = sbc_get_frame_length(&a2dp->sbc);
894 frame_count = 0;
895
896 writing_at = u->write_index;
897
898 do {
899 int encoded;
900
901 if (!u->write_memchunk.memblock)
902 pa_sink_render_full(u->sink, u->block_size, &u->write_memchunk);
903
904 p = (const uint8_t*) pa_memblock_acquire(u->write_memchunk.memblock) + u->write_memchunk.index;
905 encoded = sbc_encode(&a2dp->sbc,
906 (void*) p, u->write_memchunk.length,
907 d, left,
908 &written);
909
910 PA_ONCE_BEGIN {
911 pa_log_debug("Using SBC encoder implementation: %s", pa_strnull(sbc_get_implementation_info(&a2dp->sbc)));
912 } PA_ONCE_END;
913
914 pa_memblock_release(u->write_memchunk.memblock);
915
916 if (encoded <= 0) {
917 pa_log_error("SBC encoding error (%d)", encoded);
918 return -1;
919 }
920
921 pa_assert(written >= 0);
922
923 pa_assert((size_t) encoded <= u->write_memchunk.length);
924 pa_assert((size_t) written <= left);
925
926 /* pa_log_debug("SBC: encoded: %d; written: %d", encoded, written); */
927
928 u->write_memchunk.index += encoded;
929 u->write_memchunk.length -= encoded;
930
931 if (u->write_memchunk.length <= 0) {
932 pa_memblock_unref(u->write_memchunk.memblock);
933 pa_memchunk_reset(&u->write_memchunk);
934 }
935
936 u->write_index += encoded;
937
938 d = (uint8_t*) d + written;
939 left -= written;
940
941 frame_count++;
942
943 } while ((uint8_t*) d - (uint8_t*) a2dp->buffer + written < (ptrdiff_t) u->link_mtu);
944
945 /* write it to the fifo */
946 memset(a2dp->buffer, 0, sizeof(*header) + sizeof(*payload));
947 payload->frame_count = frame_count;
948 header->v = 2;
949 header->pt = 1;
950 header->sequence_number = htons(a2dp->seq_num++);
951 header->timestamp = htonl(writing_at / frame_size);
952 header->ssrc = htonl(1);
953
954 p = a2dp->buffer;
955 left = (uint8_t*) d - (uint8_t*) a2dp->buffer;
956
957 for (;;) {
958 ssize_t l;
959
960 l = pa_write(u->stream_fd, p, left, &u->stream_write_type);
961 /* pa_log_debug("write: requested %lu bytes; written %li bytes; mtu=%li", (unsigned long) left, (long) l, (unsigned long) u->link_mtu); */
962
963 pa_assert(l != 0);
964
965 if (l < 0) {
966 if (errno == EINTR)
967 continue;
968 else {
969 pa_log_error("Failed to write data to socket: %s", pa_cstrerror(errno));
970 return -1;
971 }
972 } else {
973 pa_assert((size_t) l <= left);
974
975 d = (uint8_t*) d + l;
976 left -= l;
977
978 if (left <= 0)
979 break;
980 }
981 }
982
983 return 0;
984 }
985
986 static void thread_func(void *userdata) {
987 struct userdata *u = userdata;
988 pa_bool_t do_write = FALSE, writable = FALSE;
989
990 pa_assert(u);
991
992 pa_log_debug("IO Thread starting up");
993
994 if (u->core->realtime_scheduling)
995 pa_make_realtime(u->core->realtime_priority);
996
997 pa_thread_mq_install(&u->thread_mq);
998 pa_rtpoll_install(u->rtpoll);
999
1000 pa_smoother_set_time_offset(u->read_smoother, pa_rtclock_usec());
1001
1002 for (;;) {
1003 struct pollfd *pollfd;
1004 int ret;
1005
1006 pollfd = pa_rtpoll_item_get_pollfd(u->rtpoll_item, NULL);
1007
1008 if (u->source && PA_SOURCE_IS_LINKED(u->source->thread_info.state)) {
1009
1010 if (pollfd->revents & POLLIN) {
1011
1012 if (hsp_process_push(u) < 0)
1013 goto fail;
1014
1015 /* We just read something, so we are supposed to write something, too */
1016 do_write = TRUE;
1017 }
1018 }
1019
1020 if (u->sink && PA_SINK_IS_LINKED(u->sink->thread_info.state)) {
1021
1022 if (u->sink->thread_info.rewind_requested)
1023 pa_sink_process_rewind(u->sink, 0);
1024
1025 if (pollfd->revents & POLLOUT)
1026 writable = TRUE;
1027
1028 if ((!u->source || !PA_SOURCE_IS_LINKED(u->source->thread_info.state)) && !do_write && writable) {
1029 pa_usec_t time_passed;
1030 uint64_t should_have_written;
1031
1032 /* Hmm, there is no input stream we could synchronize
1033 * to. So let's do things by time */
1034
1035 time_passed = pa_rtclock_usec() - u->started_at;
1036 should_have_written = pa_usec_to_bytes(time_passed, &u->sink->sample_spec);
1037
1038 do_write = u->write_index <= should_have_written ;
1039 /* pa_log_debug("Time has come: %s", pa_yes_no(do_write)); */
1040 }
1041
1042 if (writable && do_write) {
1043
1044 if (u->profile == PROFILE_A2DP) {
1045 if (a2dp_process_render(u) < 0)
1046 goto fail;
1047 } else {
1048 if (hsp_process_render(u) < 0)
1049 goto fail;
1050 }
1051
1052 do_write = FALSE;
1053 writable = FALSE;
1054 }
1055
1056 if ((!u->source || !PA_SOURCE_IS_LINKED(u->source->thread_info.state)) && !do_write) {
1057 pa_usec_t time_passed, next_write_at, sleep_for;
1058
1059 /* Hmm, there is no input stream we could synchronize
1060 * to. So let's estimate when we need to wake up the latest */
1061
1062 time_passed = pa_rtclock_usec() - u->started_at;
1063 next_write_at = pa_bytes_to_usec(u->write_index, &u->sink->sample_spec);
1064 sleep_for = time_passed < next_write_at ? next_write_at - time_passed : 0;
1065
1066 /* 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); */
1067
1068 pa_rtpoll_set_timer_relative(u->rtpoll, sleep_for);
1069 }
1070 } else
1071 pa_rtpoll_set_timer_disabled(u->rtpoll);
1072
1073 /* Hmm, nothing to do. Let's sleep */
1074 pollfd->events = (short) (((u->sink && PA_SINK_IS_OPENED(u->sink->thread_info.state) && !writable) ? POLLOUT : 0) |
1075 (u->source && PA_SOURCE_IS_OPENED(u->source->thread_info.state) ? POLLIN : 0));
1076
1077 if ((ret = pa_rtpoll_run(u->rtpoll, TRUE)) < 0)
1078 goto fail;
1079
1080 if (ret == 0)
1081 goto finish;
1082
1083 pollfd = pa_rtpoll_item_get_pollfd(u->rtpoll_item, NULL);
1084
1085 if (pollfd->revents & ~(POLLOUT|POLLIN)) {
1086 pa_log_error("FD error.");
1087 goto fail;
1088 }
1089 }
1090
1091 fail:
1092 /* If this was no regular exit from the loop we have to continue processing messages until we receive PA_MESSAGE_SHUTDOWN */
1093 pa_log_debug("IO thread failed");
1094 pa_asyncmsgq_post(u->thread_mq.outq, PA_MSGOBJECT(u->core), PA_CORE_MESSAGE_UNLOAD_MODULE, u->module, 0, NULL, NULL);
1095 pa_asyncmsgq_wait_for(u->thread_mq.inq, PA_MESSAGE_SHUTDOWN);
1096
1097 finish:
1098 pa_log_debug("IO thread shutting down");
1099 }
1100
1101 /* static DBusHandlerResult filter_cb(DBusConnection *bus, DBusMessage *msg, void *userdata) { */
1102 /* DBusMessageIter arg_i; */
1103 /* DBusError err; */
1104 /* const char *value; */
1105 /* struct userdata *u; */
1106
1107 /* pa_assert(bus); */
1108 /* pa_assert(msg); */
1109 /* pa_assert(userdata); */
1110 /* u = userdata; */
1111
1112 /* pa_log_debug("dbus: interface=%s, path=%s, member=%s\n", */
1113 /* dbus_message_get_interface(msg), */
1114 /* dbus_message_get_path(msg), */
1115 /* dbus_message_get_member(msg)); */
1116
1117 /* dbus_error_init(&err); */
1118
1119 /* if (!dbus_message_has_path(msg, u->path)) */
1120 /* goto done; */
1121
1122 /* if (dbus_message_is_signal(msg, "org.bluez.Headset", "PropertyChanged") || */
1123 /* dbus_message_is_signal(msg, "org.bluez.AudioSink", "PropertyChanged")) { */
1124
1125 /* struct device *d; */
1126 /* const char *profile; */
1127 /* DBusMessageIter variant_i; */
1128 /* dbus_uint16_t gain; */
1129
1130 /* if (!dbus_message_iter_init(msg, &arg_i)) { */
1131 /* pa_log("dbus: message has no parameters"); */
1132 /* goto done; */
1133 /* } */
1134
1135 /* if (dbus_message_iter_get_arg_type(&arg_i) != DBUS_TYPE_STRING) { */
1136 /* pa_log("Property name not a string."); */
1137 /* goto done; */
1138 /* } */
1139
1140 /* dbus_message_iter_get_basic(&arg_i, &value); */
1141
1142 /* if (!dbus_message_iter_next(&arg_i)) { */
1143 /* pa_log("Property value missing"); */
1144 /* goto done; */
1145 /* } */
1146
1147 /* if (dbus_message_iter_get_arg_type(&arg_i) != DBUS_TYPE_VARIANT) { */
1148 /* pa_log("Property value not a variant."); */
1149 /* goto done; */
1150 /* } */
1151
1152 /* dbus_message_iter_recurse(&arg_i, &variant_i); */
1153
1154 /* if (dbus_message_iter_get_arg_type(&variant_i) != DBUS_TYPE_UINT16) { */
1155 /* dbus_message_iter_get_basic(&variant_i, &gain); */
1156
1157 /* if (pa_streq(value, "SpeakerGain")) { */
1158 /* pa_log("spk gain: %d", gain); */
1159 /* pa_cvolume_set(&u->sink->virtual_volume, 1, (pa_volume_t) (gain * PA_VOLUME_NORM / 15)); */
1160 /* pa_subscription_post(u->sink->core, PA_SUBSCRIPTION_EVENT_SINK|PA_SUBSCRIPTION_EVENT_CHANGE, u->sink->index); */
1161 /* } else { */
1162 /* pa_log("mic gain: %d", gain); */
1163 /* if (!u->source) */
1164 /* goto done; */
1165
1166 /* pa_cvolume_set(&u->source->virtual_volume, 1, (pa_volume_t) (gain * PA_VOLUME_NORM / 15)); */
1167 /* pa_subscription_post(u->source->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, u->source->index); */
1168 /* } */
1169 /* } */
1170 /* } */
1171
1172 /* done: */
1173 /* dbus_error_free(&err); */
1174 /* return DBUS_HANDLER_RESULT_NOT_YET_HANDLED; */
1175 /* } */
1176
1177 /* static int sink_get_volume_cb(pa_sink *s) { */
1178 /* struct userdata *u = s->userdata; */
1179 /* pa_assert(u); */
1180
1181 /* /\* refresh? *\/ */
1182
1183 /* return 0; */
1184 /* } */
1185
1186 /* static int source_get_volume_cb(pa_source *s) { */
1187 /* struct userdata *u = s->userdata; */
1188 /* pa_assert(u); */
1189
1190 /* /\* refresh? *\/ */
1191
1192 /* return 0; */
1193 /* } */
1194
1195 /* static int sink_set_volume_cb(pa_sink *s) { */
1196 /* DBusError e; */
1197 /* DBusMessage *m, *r; */
1198 /* DBusMessageIter it, itvar; */
1199 /* dbus_uint16_t vol; */
1200 /* const char *spkgain = "SpeakerGain"; */
1201 /* struct userdata *u = s->userdata; */
1202 /* pa_assert(u); */
1203
1204 /* dbus_error_init(&e); */
1205
1206 /* vol = ((float) pa_cvolume_max(&s->virtual_volume) / PA_VOLUME_NORM) * 15; */
1207 /* pa_log_debug("set headset volume: %d", vol); */
1208
1209 /* pa_assert_se(m = dbus_message_new_method_call("org.bluez", u->path, "org.bluez.Headset", "SetProperty")); */
1210 /* dbus_message_iter_init_append(m, &it); */
1211 /* dbus_message_iter_append_basic(&it, DBUS_TYPE_STRING, &spkgain); */
1212 /* dbus_message_iter_open_container(&it, DBUS_TYPE_VARIANT, DBUS_TYPE_UINT16_AS_STRING, &itvar); */
1213 /* dbus_message_iter_append_basic(&itvar, DBUS_TYPE_UINT16, &vol); */
1214 /* dbus_message_iter_close_container(&it, &itvar); */
1215
1216 /* r = dbus_connection_send_with_reply_and_block(pa_dbus_connection_get(u->conn), m, -1, &e); */
1217
1218 /* finish: */
1219 /* if (m) */
1220 /* dbus_message_unref(m); */
1221 /* if (r) */
1222 /* dbus_message_unref(r); */
1223
1224 /* dbus_error_free(&e); */
1225
1226 /* return 0; */
1227 /* } */
1228
1229 /* static int source_set_volume_cb(pa_source *s) { */
1230 /* dbus_uint16_t vol; */
1231 /* struct userdata *u = s->userdata; */
1232 /* pa_assert(u); */
1233
1234 /* vol = ((float)pa_cvolume_max(&s->virtual_volume) / PA_VOLUME_NORM) * 15; */
1235
1236 /* pa_log_debug("set headset mic volume: %d (not implemented yet)", vol); */
1237
1238 /* return 0; */
1239 /* } */
1240
1241 static char *get_name(const char *type, pa_modargs *ma, const char *device_id, pa_bool_t *namereg_fail) {
1242 char *t;
1243 const char *n;
1244
1245 pa_assert(type);
1246 pa_assert(ma);
1247 pa_assert(device_id);
1248 pa_assert(namereg_fail);
1249
1250 t = pa_sprintf_malloc("%s_name", type);
1251 n = pa_modargs_get_value(ma, t, NULL);
1252 pa_xfree(t);
1253
1254 if (n) {
1255 *namereg_fail = TRUE;
1256 return pa_xstrdup(n);
1257 }
1258
1259 if ((n = pa_modargs_get_value(ma, "name", NULL)))
1260 *namereg_fail = TRUE;
1261 else {
1262 n = device_id;
1263 *namereg_fail = FALSE;
1264 }
1265
1266 return pa_sprintf_malloc("bluez_%s.%s", type, n);
1267 }
1268
1269 #define USE_SCO_OVER_PCM(u) (u->profile == PROFILE_HSP && (u->hsp.sco_sink && u->hsp.sco_source))
1270
1271 static void sco_over_pcm_state_update(struct userdata *u) {
1272 pa_assert(u);
1273 pa_assert(USE_SCO_OVER_PCM(u));
1274
1275 if (PA_SINK_IS_OPENED(pa_sink_get_state(u->hsp.sco_sink)) ||
1276 PA_SOURCE_IS_OPENED(pa_source_get_state(u->hsp.sco_source))) {
1277
1278 if (u->service_fd > 0)
1279 return;
1280
1281 pa_log_debug("Resuming SCO over PCM");
1282 if ((init_bt(u) < 0) || (init_profile(u) < 0))
1283 pa_log("Can't resume SCO over PCM");
1284
1285 } else {
1286
1287 if (u->service_fd <= 0)
1288 return;
1289
1290 pa_log_debug("Closing SCO over PCM");
1291 pa_close(u->service_fd);
1292 u->service_fd = -1;
1293 }
1294 }
1295
1296 static pa_hook_result_t sink_state_changed_cb(pa_core *c, pa_sink *s, struct userdata *u) {
1297 pa_assert(c);
1298 pa_sink_assert_ref(s);
1299 pa_assert(u);
1300
1301 if (s != u->hsp.sco_sink)
1302 return PA_HOOK_OK;
1303
1304 sco_over_pcm_state_update(u);
1305
1306 return PA_HOOK_OK;
1307 }
1308
1309 static pa_hook_result_t source_state_changed_cb(pa_core *c, pa_source *s, struct userdata *u) {
1310 pa_assert(c);
1311 pa_source_assert_ref(s);
1312 pa_assert(u);
1313
1314 if (s != u->hsp.sco_source)
1315 return PA_HOOK_OK;
1316
1317 sco_over_pcm_state_update(u);
1318
1319 return PA_HOOK_OK;
1320 }
1321
1322 static int add_sink(struct userdata *u) {
1323
1324 if (USE_SCO_OVER_PCM(u)) {
1325 pa_proplist *p;
1326
1327 u->sink = u->hsp.sco_sink;
1328 p = pa_proplist_new();
1329 pa_proplist_sets(p, "bluetooth.protocol", "sco");
1330 pa_proplist_update(u->sink->proplist, PA_UPDATE_MERGE, p);
1331 pa_proplist_free(p);
1332
1333 if (!u->hsp.sink_state_changed_slot)
1334 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);
1335
1336 } else {
1337 pa_sink_new_data data;
1338 pa_bool_t b;
1339
1340 pa_sink_new_data_init(&data);
1341 data.driver = __FILE__;
1342 data.module = u->module;
1343 pa_sink_new_data_set_sample_spec(&data, &u->sample_spec);
1344 pa_proplist_sets(data.proplist, "bluetooth.protocol", u->profile == PROFILE_A2DP ? "a2dp" : "sco");
1345 data.card = u->card;
1346 data.name = get_name("sink", u->modargs, u->device->address, &b);
1347 data.namereg_fail = b;
1348
1349 u->sink = pa_sink_new(u->core, &data, PA_SINK_HARDWARE|PA_SINK_LATENCY);
1350 pa_sink_new_data_done(&data);
1351
1352 if (!u->sink) {
1353 pa_log_error("Failed to create sink");
1354 return -1;
1355 }
1356
1357 u->sink->userdata = u;
1358 u->sink->parent.process_msg = sink_process_msg;
1359 }
1360
1361 /* u->sink->get_volume = sink_get_volume_cb; */
1362 /* u->sink->set_volume = sink_set_volume_cb; */
1363
1364 return 0;
1365 }
1366
1367 static int add_source(struct userdata *u) {
1368 pa_proplist *p;
1369
1370 if (USE_SCO_OVER_PCM(u)) {
1371 u->source = u->hsp.sco_source;
1372 p = pa_proplist_new();
1373 pa_proplist_sets(p, "bluetooth.protocol", "sco");
1374 pa_proplist_update(u->source->proplist, PA_UPDATE_MERGE, p);
1375 pa_proplist_free(p);
1376
1377 if (!u->hsp.source_state_changed_slot)
1378 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);
1379
1380 } else {
1381 pa_source_new_data data;
1382 pa_bool_t b;
1383
1384 pa_source_new_data_init(&data);
1385 data.driver = __FILE__;
1386 data.module = u->module;
1387 pa_source_new_data_set_sample_spec(&data, &u->sample_spec);
1388 pa_proplist_sets(data.proplist, "bluetooth.protocol", u->profile == PROFILE_A2DP ? "a2dp" : "sco");
1389 data.card = u->card;
1390 data.name = get_name("source", u->modargs, u->device->address, &b);
1391 data.namereg_fail = b;
1392
1393 u->source = pa_source_new(u->core, &data, PA_SOURCE_HARDWARE|PA_SOURCE_LATENCY);
1394 pa_source_new_data_done(&data);
1395
1396 if (!u->source) {
1397 pa_log_error("Failed to create source");
1398 return -1;
1399 }
1400
1401 u->source->userdata = u;
1402 u->source->parent.process_msg = source_process_msg;
1403 }
1404
1405 /* u->source->get_volume = source_get_volume_cb; */
1406 /* u->source->set_volume = source_set_volume_cb; */
1407
1408 p = pa_proplist_new();
1409 pa_proplist_sets(p, "bluetooth.nrec", pa_yes_no(u->hsp.pcm_capabilities.flags & BT_PCM_FLAG_NREC));
1410 pa_proplist_update(u->source->proplist, PA_UPDATE_MERGE, p);
1411 pa_proplist_free(p);
1412
1413 return 0;
1414 }
1415
1416 static void shutdown_bt(struct userdata *u) {
1417 pa_assert(u);
1418
1419 if (u->stream_fd >= 0) {
1420 pa_close(u->stream_fd);
1421 u->stream_fd = -1;
1422 }
1423
1424 if (u->service_fd >= 0) {
1425 pa_close(u->service_fd);
1426 u->service_fd = -1;
1427 }
1428 }
1429
1430 static int init_bt(struct userdata *u) {
1431 pa_assert(u);
1432
1433 shutdown_bt(u);
1434
1435 u->stream_write_type = u->stream_read_type = 0;
1436 u->service_write_type = u->service_write_type = 0;
1437
1438 if ((u->service_fd = bt_audio_service_open()) < 0) {
1439 pa_log_error("Couldn't connect to bluetooth audio service");
1440 return -1;
1441 }
1442
1443 pa_log_debug("Connected to the bluetooth audio service");
1444
1445 return 0;
1446 }
1447
1448 static int setup_bt(struct userdata *u) {
1449 pa_assert(u);
1450
1451 if (get_caps(u) < 0)
1452 return -1;
1453
1454 pa_log_debug("Got device capabilities");
1455
1456 if (set_conf(u) < 0)
1457 return -1;
1458
1459 pa_log_debug("Connection to the device configured");
1460
1461 if (USE_SCO_OVER_PCM(u)) {
1462 pa_log_debug("Configured to use SCO over PCM");
1463 return 0;
1464 }
1465
1466 if (setup_stream_fd(u) < 0)
1467 return -1;
1468
1469 pa_log_debug("Got the stream socket");
1470
1471 return 0;
1472 }
1473
1474 static int init_profile(struct userdata *u) {
1475 int r = 0;
1476 pa_assert(u);
1477
1478 if (setup_bt(u) < 0)
1479 return -1;
1480
1481 if (u->profile == PROFILE_A2DP ||
1482 u->profile == PROFILE_HSP)
1483 if (add_sink(u) < 0)
1484 r = -1;
1485
1486 if (u->profile == PROFILE_HSP)
1487 if (add_source(u) < 0)
1488 r = -1;
1489
1490 return r;
1491 }
1492
1493 static void stop_thread(struct userdata *u) {
1494 pa_assert(u);
1495
1496 if (u->thread) {
1497 pa_asyncmsgq_send(u->thread_mq.inq, NULL, PA_MESSAGE_SHUTDOWN, NULL, 0, NULL);
1498 pa_thread_free(u->thread);
1499 u->thread = NULL;
1500 }
1501
1502 if (u->rtpoll_item) {
1503 pa_rtpoll_item_free(u->rtpoll_item);
1504 u->rtpoll_item = NULL;
1505 }
1506
1507 if (u->hsp.sink_state_changed_slot) {
1508 pa_hook_slot_free(u->hsp.sink_state_changed_slot);
1509 u->hsp.sink_state_changed_slot = NULL;
1510 }
1511
1512 if (u->hsp.source_state_changed_slot) {
1513 pa_hook_slot_free(u->hsp.source_state_changed_slot);
1514 u->hsp.source_state_changed_slot = NULL;
1515 }
1516
1517 if (u->sink) {
1518 pa_sink_unref(u->sink);
1519 u->sink = NULL;
1520 }
1521
1522 if (u->source) {
1523 pa_source_unref(u->source);
1524 u->source = NULL;
1525 }
1526
1527 if (u->rtpoll) {
1528 pa_thread_mq_done(&u->thread_mq);
1529
1530 pa_rtpoll_free(u->rtpoll);
1531 u->rtpoll = NULL;
1532 }
1533 }
1534
1535 static int start_thread(struct userdata *u) {
1536 struct pollfd *pollfd;
1537
1538 pa_assert(u);
1539 pa_assert(!u->thread);
1540 pa_assert(!u->rtpoll);
1541 pa_assert(!u->rtpoll_item);
1542
1543 if (USE_SCO_OVER_PCM(u)) {
1544 pa_sink_ref(u->sink);
1545 pa_source_ref(u->source);
1546 return 0;
1547 }
1548
1549 u->rtpoll = pa_rtpoll_new();
1550 pa_thread_mq_init(&u->thread_mq, u->core->mainloop, u->rtpoll);
1551
1552 u->rtpoll_item = pa_rtpoll_item_new(u->rtpoll, PA_RTPOLL_NEVER, 1);
1553 pollfd = pa_rtpoll_item_get_pollfd(u->rtpoll_item, NULL);
1554 pollfd->fd = u->stream_fd;
1555 pollfd->events = pollfd->revents = 0;
1556
1557 if (!(u->thread = pa_thread_new(thread_func, u))) {
1558 pa_log_error("Failed to create IO thread");
1559 stop_thread(u);
1560 return -1;
1561 }
1562
1563 if (u->sink) {
1564 pa_sink_set_asyncmsgq(u->sink, u->thread_mq.inq);
1565 pa_sink_set_rtpoll(u->sink, u->rtpoll);
1566 pa_sink_put(u->sink);
1567 }
1568
1569 if (u->source) {
1570 pa_source_set_asyncmsgq(u->source, u->thread_mq.inq);
1571 pa_source_set_rtpoll(u->source, u->rtpoll);
1572 pa_source_put(u->source);
1573 }
1574
1575 return 0;
1576 }
1577
1578 static int card_set_profile(pa_card *c, pa_card_profile *new_profile) {
1579 struct userdata *u;
1580 enum profile *d;
1581 pa_queue *inputs = NULL, *outputs = NULL;
1582
1583 pa_assert(c);
1584 pa_assert(new_profile);
1585 pa_assert_se(u = c->userdata);
1586
1587 d = PA_CARD_PROFILE_DATA(new_profile);
1588
1589 if (u->sink) {
1590 inputs = pa_sink_move_all_start(u->sink);
1591 if (!USE_SCO_OVER_PCM(u))
1592 pa_sink_unlink(u->sink);
1593 }
1594
1595 if (u->source) {
1596 outputs = pa_source_move_all_start(u->source);
1597 if (!USE_SCO_OVER_PCM(u))
1598 pa_source_unlink(u->source);
1599 }
1600
1601 stop_thread(u);
1602 shutdown_bt(u);
1603
1604 if (u->write_memchunk.memblock) {
1605 pa_memblock_unref(u->write_memchunk.memblock);
1606 pa_memchunk_reset(&u->write_memchunk);
1607 }
1608
1609 u->profile = *d;
1610 u->sample_spec = u->requested_sample_spec;
1611
1612 init_bt(u);
1613 init_profile(u);
1614
1615 if (u->sink || u->source)
1616 start_thread(u);
1617
1618 if (inputs) {
1619 if (u->sink)
1620 pa_sink_move_all_finish(u->sink, inputs, FALSE);
1621 else
1622 pa_sink_move_all_fail(inputs);
1623 }
1624
1625 if (outputs) {
1626 if (u->source)
1627 pa_source_move_all_finish(u->source, outputs, FALSE);
1628 else
1629 pa_source_move_all_fail(outputs);
1630 }
1631
1632 return 0;
1633 }
1634
1635 static int add_card(struct userdata *u, const char * default_profile) {
1636 pa_card_new_data data;
1637 pa_bool_t b;
1638 pa_card_profile *p;
1639 enum profile *d;
1640 const char *ff;
1641 char *n;
1642
1643 pa_card_new_data_init(&data);
1644 data.driver = __FILE__;
1645 data.module = u->module;
1646
1647 n = pa_bluetooth_cleanup_name(u->device->name);
1648 pa_proplist_sets(data.proplist, PA_PROP_DEVICE_DESCRIPTION, n);
1649 pa_xfree(n);
1650 pa_proplist_sets(data.proplist, PA_PROP_DEVICE_STRING, u->device->address);
1651 pa_proplist_sets(data.proplist, PA_PROP_DEVICE_API, "bluez");
1652 pa_proplist_sets(data.proplist, PA_PROP_DEVICE_CLASS, "sound");
1653 pa_proplist_sets(data.proplist, PA_PROP_DEVICE_CONNECTOR, "bluetooth");
1654 if ((ff = pa_bluetooth_get_form_factor(u->device->class)))
1655 pa_proplist_sets(data.proplist, PA_PROP_DEVICE_FORM_FACTOR, ff);
1656 pa_proplist_sets(data.proplist, "bluez.path", u->device->path);
1657 pa_proplist_setf(data.proplist, "bluez.class", "0x%06x", (unsigned) u->device->class);
1658 pa_proplist_sets(data.proplist, "bluez.name", u->device->name);
1659 data.name = get_name("card", u->modargs, u->device->address, &b);
1660 data.namereg_fail = b;
1661
1662 data.profiles = pa_hashmap_new(pa_idxset_string_hash_func, pa_idxset_string_compare_func);
1663
1664 if (u->device->audio_sink_info_valid > 0) {
1665 p = pa_card_profile_new("a2dp", _("High Fidelity Playback (A2DP)"), sizeof(enum profile));
1666 p->priority = 10;
1667 p->n_sinks = 1;
1668 p->n_sources = 0;
1669 p->max_sink_channels = 2;
1670 p->max_source_channels = 0;
1671
1672 d = PA_CARD_PROFILE_DATA(p);
1673 *d = PROFILE_A2DP;
1674
1675 pa_hashmap_put(data.profiles, p->name, p);
1676 }
1677
1678 if (u->device->headset_info_valid > 0) {
1679 p = pa_card_profile_new("hsp", _("Telephony Duplex (HSP/HFP)"), sizeof(enum profile));
1680 p->priority = 20;
1681 p->n_sinks = 1;
1682 p->n_sources = 1;
1683 p->max_sink_channels = 1;
1684 p->max_source_channels = 1;
1685
1686 d = PA_CARD_PROFILE_DATA(p);
1687 *d = PROFILE_HSP;
1688
1689 pa_hashmap_put(data.profiles, p->name, p);
1690 }
1691
1692 pa_assert(!pa_hashmap_isempty(data.profiles));
1693
1694 p = pa_card_profile_new("off", _("Off"), sizeof(enum profile));
1695 d = PA_CARD_PROFILE_DATA(p);
1696 *d = PROFILE_OFF;
1697 pa_hashmap_put(data.profiles, p->name, p);
1698
1699 if (default_profile) {
1700 if (pa_hashmap_get(data.profiles, default_profile))
1701 pa_card_new_data_set_profile(&data, default_profile);
1702 else
1703 pa_log_warn("Profile '%s' not valid or not supported by device.", default_profile);
1704 }
1705
1706 u->card = pa_card_new(u->core, &data);
1707 pa_card_new_data_done(&data);
1708
1709 if (!u->card) {
1710 pa_log("Failed to allocate card.");
1711 return -1;
1712 }
1713
1714 u->card->userdata = u;
1715 u->card->set_profile = card_set_profile;
1716
1717 d = PA_CARD_PROFILE_DATA(u->card->active_profile);
1718 u->profile = *d;
1719
1720 return 0;
1721 }
1722
1723 static int setup_dbus(struct userdata *u) {
1724 DBusError error;
1725
1726 dbus_error_init(&error);
1727
1728 u->connection = pa_dbus_bus_get(u->core, DBUS_BUS_SYSTEM, &error);
1729 if (dbus_error_is_set(&error) || (!u->connection)) {
1730 pa_log("Failed to get D-Bus connection: %s", error.message);
1731 dbus_error_free(&error);
1732 return -1;
1733 }
1734
1735 return 0;
1736 }
1737
1738 static int find_device(struct userdata *u, const char *address, const char *path) {
1739 pa_assert(u);
1740
1741 if (!address && !path) {
1742 pa_log_error("Failed to get device address/path from module arguments.");
1743 return -1;
1744 }
1745
1746 if (path) {
1747 if (!(u->device = pa_bluetooth_get_device(pa_dbus_connection_get(u->connection), path))) {
1748 pa_log_error("%s is not a valid BlueZ audio device.", path);
1749 return -1;
1750 }
1751
1752 if (address && !(pa_streq(u->device->address, address))) {
1753 pa_log_error("Passed path %s and address %s don't match.", path, address);
1754 return -1;
1755 }
1756 } else {
1757 if (!(u->device = pa_bluetooth_find_device(pa_dbus_connection_get(u->connection), address))) {
1758 pa_log_error("%s is not known.", address);
1759 return -1;
1760 }
1761 }
1762
1763 return 0;
1764 }
1765
1766 int pa__init(pa_module* m) {
1767 pa_modargs *ma;
1768 uint32_t channels;
1769 struct userdata *u;
1770 const char *address, *path;
1771
1772 pa_assert(m);
1773
1774 if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
1775 pa_log_error("Failed to parse module arguments");
1776 goto fail;
1777 }
1778
1779 m->userdata = u = pa_xnew0(struct userdata, 1);
1780 u->module = m;
1781 u->core = m->core;
1782 u->service_fd = -1;
1783 u->stream_fd = -1;
1784 u->read_smoother = pa_smoother_new(PA_USEC_PER_SEC, PA_USEC_PER_SEC*2, TRUE, 10);
1785 u->sample_spec = m->core->default_sample_spec;
1786 u->modargs = ma;
1787
1788 if (pa_modargs_get_value(ma, "sco_sink", NULL) &&
1789 !(u->hsp.sco_sink = pa_namereg_get(m->core, pa_modargs_get_value(ma, "sco_sink", NULL), PA_NAMEREG_SINK))) {
1790 pa_log("SCO sink not found");
1791 goto fail;
1792 }
1793
1794 if (pa_modargs_get_value(ma, "sco_source", NULL) &&
1795 !(u->hsp.sco_source = pa_namereg_get(m->core, pa_modargs_get_value(ma, "sco_source", NULL), PA_NAMEREG_SOURCE))) {
1796 pa_log("SCO source not found");
1797 goto fail;
1798 }
1799
1800 if (pa_modargs_get_value_u32(ma, "rate", &u->sample_spec.rate) < 0 ||
1801 u->sample_spec.rate <= 0 || u->sample_spec.rate > PA_RATE_MAX) {
1802 pa_log_error("Failed to get rate from module arguments");
1803 goto fail;
1804 }
1805
1806 channels = u->sample_spec.channels;
1807 if (pa_modargs_get_value_u32(ma, "channels", &channels) < 0 ||
1808 channels <= 0 || channels > PA_CHANNELS_MAX) {
1809 pa_log_error("Failed to get channels from module arguments");
1810 goto fail;
1811 }
1812 u->sample_spec.channels = (uint8_t) channels;
1813 u->requested_sample_spec = u->sample_spec;
1814
1815 if (setup_dbus(u) < 0)
1816 goto fail;
1817
1818 address = pa_modargs_get_value(ma, "address", NULL);
1819 path = pa_modargs_get_value(ma, "path", NULL);
1820
1821 if (find_device(u, address, path) < 0)
1822 goto fail;
1823
1824 pa_assert(u->device);
1825
1826 /* Add the card structure. This will also initialize the default profile */
1827 if (add_card(u, pa_modargs_get_value(ma, "profile", NULL)) < 0)
1828 goto fail;
1829
1830 /* Connect to the BT service and query capabilities */
1831 if (init_bt(u) < 0)
1832 goto fail;
1833
1834 if (init_profile(u) < 0)
1835 goto fail;
1836
1837 /* if (u->path) { */
1838 /* DBusError err; */
1839 /* dbus_error_init(&err); */
1840 /* char *t; */
1841
1842
1843 /* if (!dbus_connection_add_filter(pa_dbus_connection_get(u->conn), filter_cb, u, NULL)) { */
1844 /* pa_log_error("Failed to add filter function"); */
1845 /* goto fail; */
1846 /* } */
1847
1848 /* if (u->transport == BT_CAPABILITIES_TRANSPORT_SCO || */
1849 /* u->transport == BT_CAPABILITIES_TRANSPORT_ANY) { */
1850 /* t = pa_sprintf_malloc("type='signal',sender='org.bluez',interface='org.bluez.Headset',member='PropertyChanged',path='%s'", u->path); */
1851 /* dbus_bus_add_match(pa_dbus_connection_get(u->conn), t, &err); */
1852 /* pa_xfree(t); */
1853
1854 /* if (dbus_error_is_set(&err)) { */
1855 /* pa_log_error("Unable to subscribe to org.bluez.Headset signals: %s: %s", err.name, err.message); */
1856 /* goto fail; */
1857 /* } */
1858 /* } */
1859
1860 /* if (u->transport == BT_CAPABILITIES_TRANSPORT_A2DP || */
1861 /* u->transport == BT_CAPABILITIES_TRANSPORT_ANY) { */
1862 /* t = pa_sprintf_malloc("type='signal',sender='org.bluez',interface='org.bluez.AudioSink',member='PropertyChanged',path='%s'", u->path); */
1863 /* dbus_bus_add_match(pa_dbus_connection_get(u->conn), t, &err); */
1864 /* pa_xfree(t); */
1865
1866 /* if (dbus_error_is_set(&err)) { */
1867 /* pa_log_error("Unable to subscribe to org.bluez.AudioSink signals: %s: %s", err.name, err.message); */
1868 /* goto fail; */
1869 /* } */
1870 /* } */
1871 /* } */
1872
1873 if (start_thread(u) < 0)
1874 goto fail;
1875
1876 return 0;
1877
1878 fail:
1879 pa__done(m);
1880 return -1;
1881 }
1882
1883 int pa__get_n_used(pa_module *m) {
1884 struct userdata *u;
1885
1886 pa_assert(m);
1887 pa_assert_se(u = m->userdata);
1888
1889 return
1890 (u->sink ? pa_sink_linked_by(u->sink) : 0) +
1891 (u->source ? pa_source_linked_by(u->source) : 0);
1892 }
1893
1894 void pa__done(pa_module *m) {
1895 struct userdata *u;
1896 pa_assert(m);
1897
1898 if (!(u = m->userdata))
1899 return;
1900
1901 if (u->sink && !USE_SCO_OVER_PCM(u))
1902 pa_sink_unlink(u->sink);
1903
1904 if (u->source && !USE_SCO_OVER_PCM(u))
1905 pa_source_unlink(u->source);
1906
1907 stop_thread(u);
1908
1909 if (u->connection) {
1910 /* DBusError error; */
1911 /* char *t; */
1912
1913 /* if (u->transport == BT_CAPABILITIES_TRANSPORT_SCO || */
1914 /* u->transport == BT_CAPABILITIES_TRANSPORT_ANY) { */
1915
1916 /* t = pa_sprintf_malloc("type='signal',sender='org.bluez',interface='org.bluez.Headset',member='PropertyChanged',path='%s'", u->path); */
1917 /* dbus_error_init(&error); */
1918 /* dbus_bus_remove_match(pa_dbus_connection_get(u->conn), t, &error); */
1919 /* dbus_error_free(&error); */
1920 /* pa_xfree(t); */
1921 /* } */
1922
1923 /* if (u->transport == BT_CAPABILITIES_TRANSPORT_A2DP || */
1924 /* u->transport == BT_CAPABILITIES_TRANSPORT_ANY) { */
1925
1926 /* t = pa_sprintf_malloc("type='signal',sender='org.bluez',interface='org.bluez.AudioSink',member='PropertyChanged',path='%s'", u->path); */
1927 /* dbus_error_init(&error); */
1928 /* dbus_bus_remove_match(pa_dbus_connection_get(u->conn), t, &error); */
1929 /* dbus_error_free(&error); */
1930 /* pa_xfree(t); */
1931 /* } */
1932
1933 /* dbus_connection_remove_filter(pa_dbus_connection_get(u->conn), filter_cb, u); */
1934 pa_dbus_connection_unref(u->connection);
1935 }
1936
1937 if (u->card)
1938 pa_card_free(u->card);
1939
1940 if (u->read_smoother)
1941 pa_smoother_free(u->read_smoother);
1942
1943 shutdown_bt(u);
1944
1945 if (u->device)
1946 pa_bluetooth_device_free(u->device);
1947
1948 if (u->write_memchunk.memblock)
1949 pa_memblock_unref(u->write_memchunk.memblock);
1950
1951 if (u->a2dp.buffer)
1952 pa_xfree(u->a2dp.buffer);
1953
1954 sbc_finish(&u->a2dp.sbc);
1955
1956 if (u->modargs)
1957 pa_modargs_free(u->modargs);
1958
1959 pa_xfree(u);
1960 }