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pulseaudio/src/modules/module-bt-device.c
João Paulo Rechi Vita 27bc1ea423 Remove unnecessary initialization of getcaps_req->flags
2008-09-11 01:12:08 +03:00

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/***
This file is part of PulseAudio.
Copyright 2008 Joao Paulo Rechi Vita
PulseAudio is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published
by the Free Software Foundation; either version 2 of the License,
or (at your option) any later version.
PulseAudio is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with PulseAudio; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
USA.
***/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <string.h>
#include <errno.h>
#include <poll.h>
#include <pulse/xmalloc.h>
#include <pulse/timeval.h>
#include <pulse/sample.h>
#include <pulsecore/module.h>
#include <pulsecore/modargs.h>
#include <pulsecore/core-util.h>
#include <pulsecore/core-error.h>
#include <pulsecore/socket-util.h>
#include <pulsecore/thread.h>
#include <pulsecore/thread-mq.h>
#include <pulsecore/rtpoll.h>
#include <pulsecore/time-smoother.h>
#include <pulsecore/rtclock.h>
#include "dbus-util.h"
#include "module-bt-device-symdef.h"
#include "bt-ipc.h"
#include "bt-sbc.h"
#include "bt-rtp.h"
#define DEFAULT_SINK_NAME "bluetooth_sink"
#define BUFFER_SIZE 2048
#define MAX_BITPOOL 64
#define MIN_BITPOOL 2
#define SOL_SCO 17
#define SCO_TXBUFS 0x03
#define SCO_RXBUFS 0x04
PA_MODULE_AUTHOR("Joao Paulo Rechi Vita");
PA_MODULE_DESCRIPTION("Bluetooth audio sink and source");
PA_MODULE_VERSION(PACKAGE_VERSION);
PA_MODULE_LOAD_ONCE(FALSE);
PA_MODULE_USAGE(
"name=<name of the device> "
"addr=<address of the device> "
"profile=<a2dp|hsp>");
struct bt_a2dp {
sbc_capabilities_t sbc_capabilities;
sbc_t sbc; /* Codec data */
pa_bool_t sbc_initialized; /* Keep track if the encoder is initialized */
int codesize; /* SBC codesize */
int samples; /* Number of encoded samples */
uint8_t buffer[BUFFER_SIZE]; /* Codec transfer buffer */
int count; /* Codec transfer buffer counter */
int nsamples; /* Cumulative number of codec samples */
uint16_t seq_num; /* Cumulative packet sequence */
int frame_count; /* Current frames in buffer*/
};
struct userdata {
pa_core *core;
pa_module *module;
pa_sink *sink;
pa_thread_mq thread_mq;
pa_rtpoll *rtpoll;
pa_rtpoll_item *rtpoll_item;
pa_thread *thread;
int64_t offset;
pa_smoother *smoother;
pa_memchunk memchunk;
pa_mempool *mempool;
char *name;
char *addr;
char *profile;
pa_sample_spec ss;
int audioservice_fd;
int stream_fd;
int transport;
int link_mtu;
size_t block_size;
pa_usec_t latency;
struct bt_a2dp a2dp;
};
static const char* const valid_modargs[] = {
"name",
"addr",
"profile",
"rate",
"channels",
NULL
};
static int bt_audioservice_send(int sk, const bt_audio_msg_header_t *msg) {
int e;
pa_log_debug("sending %s", bt_audio_strmsg(msg->msg_type));
if (send(sk, msg, BT_AUDIO_IPC_PACKET_SIZE, 0) > 0)
e = 0;
else {
e = -errno;
pa_log_error("Error sending data to audio service: %s(%d)", pa_cstrerror(errno), errno);
}
return e;
}
static int bt_audioservice_recv(int sk, bt_audio_msg_header_t *inmsg) {
int e;
const char *type;
pa_log_debug("trying to receive msg from audio service...");
if (recv(sk, inmsg, BT_AUDIO_IPC_PACKET_SIZE, 0) > 0) {
type = bt_audio_strmsg(inmsg->msg_type);
if (type) {
pa_log_debug("Received %s", type);
e = 0;
}
else {
e = -EINVAL;
pa_log_error("Bogus message type %d received from audio service", inmsg->msg_type);
}
}
else {
e = -errno;
pa_log_error("Error receiving data from audio service: %s(%d)", pa_cstrerror(errno), errno);
}
return e;
}
static int bt_audioservice_expect(int sk, bt_audio_msg_header_t *rsp_hdr, int expected_type) {
int e = bt_audioservice_recv(sk, rsp_hdr);
if (e == 0) {
if (rsp_hdr->msg_type != expected_type) {
e = -EINVAL;
pa_log_error("Bogus message %s received while %s was expected", bt_audio_strmsg(rsp_hdr->msg_type),
bt_audio_strmsg(expected_type));
}
}
return e;
}
static int bt_getcaps(struct userdata *u) {
int e;
char buf[BT_AUDIO_IPC_PACKET_SIZE];
bt_audio_rsp_msg_header_t *rsp_hdr = (void*) buf;
struct bt_getcapabilities_req *getcaps_req = (void*) buf;
struct bt_getcapabilities_rsp *getcaps_rsp = (void*) buf;
memset(getcaps_req, 0, BT_AUDIO_IPC_PACKET_SIZE);
getcaps_req->h.msg_type = BT_GETCAPABILITIES_REQ;
strncpy(getcaps_req->device, u->addr, 18);
if (strcasecmp(u->profile, "a2dp") == 0)
getcaps_req->transport = BT_CAPABILITIES_TRANSPORT_A2DP;
else if (strcasecmp(u->profile, "hsp") == 0)
getcaps_req->transport = BT_CAPABILITIES_TRANSPORT_SCO;
else {
pa_log_error("invalid profile argument: %s", u->profile);
return -1;
}
getcaps_req->flags = BT_FLAG_AUTOCONNECT;
e = bt_audioservice_send(u->audioservice_fd, &getcaps_req->h);
if (e < 0) {
pa_log_error("failed to send GETCAPABILITIES_REQ");
return e;
}
e = bt_audioservice_expect(u->audioservice_fd, &rsp_hdr->msg_h, BT_GETCAPABILITIES_RSP);
if (e < 0) {
pa_log_error("failed to expect for GETCAPABILITIES_RSP");
return e;
}
if (rsp_hdr->posix_errno != 0) {
pa_log_error("BT_GETCAPABILITIES failed : %s (%d)", pa_cstrerror(rsp_hdr->posix_errno), rsp_hdr->posix_errno);
return -rsp_hdr->posix_errno;
}
if ((u->transport = getcaps_rsp->transport) == BT_CAPABILITIES_TRANSPORT_A2DP)
u->a2dp.sbc_capabilities = getcaps_rsp->sbc_capabilities;
return 0;
}
static uint8_t default_bitpool(uint8_t freq, uint8_t mode) {
switch (freq) {
case BT_SBC_SAMPLING_FREQ_16000:
case BT_SBC_SAMPLING_FREQ_32000:
return 53;
case BT_SBC_SAMPLING_FREQ_44100:
switch (mode) {
case BT_A2DP_CHANNEL_MODE_MONO:
case BT_A2DP_CHANNEL_MODE_DUAL_CHANNEL:
return 31;
case BT_A2DP_CHANNEL_MODE_STEREO:
case BT_A2DP_CHANNEL_MODE_JOINT_STEREO:
return 53;
default:
pa_log_warn("Invalid channel mode %u", mode);
return 53;
}
case BT_SBC_SAMPLING_FREQ_48000:
switch (mode) {
case BT_A2DP_CHANNEL_MODE_MONO:
case BT_A2DP_CHANNEL_MODE_DUAL_CHANNEL:
return 29;
case BT_A2DP_CHANNEL_MODE_STEREO:
case BT_A2DP_CHANNEL_MODE_JOINT_STEREO:
return 51;
default:
pa_log_warn("Invalid channel mode %u", mode);
return 51;
}
default:
pa_log_warn("Invalid sampling freq %u", freq);
return 53;
}
}
static int bt_a2dp_init(struct userdata *u) {
sbc_capabilities_t *cap = &u->a2dp.sbc_capabilities;
unsigned int max_bitpool, min_bitpool;
switch (u->ss.rate) {
case 48000:
cap->frequency = BT_SBC_SAMPLING_FREQ_48000;
break;
case 44100:
cap->frequency = BT_SBC_SAMPLING_FREQ_44100;
break;
case 32000:
cap->frequency = BT_SBC_SAMPLING_FREQ_32000;
break;
case 16000:
cap->frequency = BT_SBC_SAMPLING_FREQ_16000;
break;
default:
pa_log_error("Rate %d not supported", u->ss.rate);
return -1;
}
// if (cfg->has_channel_mode)
// cap->channel_mode = cfg->channel_mode;
// else
if (u->ss.channels == 2) {
if (cap->channel_mode & BT_A2DP_CHANNEL_MODE_JOINT_STEREO)
cap->channel_mode = BT_A2DP_CHANNEL_MODE_JOINT_STEREO;
else if (cap->channel_mode & BT_A2DP_CHANNEL_MODE_STEREO)
cap->channel_mode = BT_A2DP_CHANNEL_MODE_STEREO;
else if (cap->channel_mode & BT_A2DP_CHANNEL_MODE_DUAL_CHANNEL)
cap->channel_mode = BT_A2DP_CHANNEL_MODE_DUAL_CHANNEL;
} else {
if (cap->channel_mode & BT_A2DP_CHANNEL_MODE_MONO)
cap->channel_mode = BT_A2DP_CHANNEL_MODE_MONO;
}
if (!cap->channel_mode) {
pa_log_error("No supported channel modes");
return -1;
}
// if (cfg->has_block_length)
// cap->block_length = cfg->block_length;
// else
if (cap->block_length & BT_A2DP_BLOCK_LENGTH_16)
cap->block_length = BT_A2DP_BLOCK_LENGTH_16;
else if (cap->block_length & BT_A2DP_BLOCK_LENGTH_12)
cap->block_length = BT_A2DP_BLOCK_LENGTH_12;
else if (cap->block_length & BT_A2DP_BLOCK_LENGTH_8)
cap->block_length = BT_A2DP_BLOCK_LENGTH_8;
else if (cap->block_length & BT_A2DP_BLOCK_LENGTH_4)
cap->block_length = BT_A2DP_BLOCK_LENGTH_4;
else {
pa_log_error("No supported block lengths");
return -1;
}
// if (cfg->has_subbands)
// cap->subbands = cfg->subbands;
if (cap->subbands & BT_A2DP_SUBBANDS_8)
cap->subbands = BT_A2DP_SUBBANDS_8;
else if (cap->subbands & BT_A2DP_SUBBANDS_4)
cap->subbands = BT_A2DP_SUBBANDS_4;
else {
pa_log_error("No supported subbands");
return -1;
}
// if (cfg->has_allocation_method)
// cap->allocation_method = cfg->allocation_method;
if (cap->allocation_method & BT_A2DP_ALLOCATION_LOUDNESS)
cap->allocation_method = BT_A2DP_ALLOCATION_LOUDNESS;
else if (cap->allocation_method & BT_A2DP_ALLOCATION_SNR)
cap->allocation_method = BT_A2DP_ALLOCATION_SNR;
// if (cfg->has_bitpool)
// min_bitpool = max_bitpool = cfg->bitpool;
// else {
min_bitpool = MAX(MIN_BITPOOL, cap->min_bitpool);
max_bitpool = MIN(default_bitpool(cap->frequency, cap->channel_mode), cap->max_bitpool);
// }
cap->min_bitpool = min_bitpool;
cap->max_bitpool = max_bitpool;
return 0;
}
static void bt_a2dp_setup(struct bt_a2dp *a2dp) {
sbc_capabilities_t active_capabilities = a2dp->sbc_capabilities;
if (a2dp->sbc_initialized)
sbc_reinit(&a2dp->sbc, 0);
else
sbc_init(&a2dp->sbc, 0);
a2dp->sbc_initialized = TRUE;
if (active_capabilities.frequency & BT_SBC_SAMPLING_FREQ_16000)
a2dp->sbc.frequency = SBC_FREQ_16000;
if (active_capabilities.frequency & BT_SBC_SAMPLING_FREQ_32000)
a2dp->sbc.frequency = SBC_FREQ_32000;
if (active_capabilities.frequency & BT_SBC_SAMPLING_FREQ_44100)
a2dp->sbc.frequency = SBC_FREQ_44100;
if (active_capabilities.frequency & BT_SBC_SAMPLING_FREQ_48000)
a2dp->sbc.frequency = SBC_FREQ_48000;
if (active_capabilities.channel_mode & BT_A2DP_CHANNEL_MODE_MONO)
a2dp->sbc.mode = SBC_MODE_MONO;
if (active_capabilities.channel_mode & BT_A2DP_CHANNEL_MODE_DUAL_CHANNEL)
a2dp->sbc.mode = SBC_MODE_DUAL_CHANNEL;
if (active_capabilities.channel_mode & BT_A2DP_CHANNEL_MODE_STEREO)
a2dp->sbc.mode = SBC_MODE_STEREO;
if (active_capabilities.channel_mode & BT_A2DP_CHANNEL_MODE_JOINT_STEREO)
a2dp->sbc.mode = SBC_MODE_JOINT_STEREO;
a2dp->sbc.allocation = (active_capabilities.allocation_method == BT_A2DP_ALLOCATION_SNR ? SBC_AM_SNR : SBC_AM_LOUDNESS);
switch (active_capabilities.subbands) {
case BT_A2DP_SUBBANDS_4:
a2dp->sbc.subbands = SBC_SB_4;
break;
case BT_A2DP_SUBBANDS_8:
a2dp->sbc.subbands = SBC_SB_8;
break;
}
switch (active_capabilities.block_length) {
case BT_A2DP_BLOCK_LENGTH_4:
a2dp->sbc.blocks = SBC_BLK_4;
break;
case BT_A2DP_BLOCK_LENGTH_8:
a2dp->sbc.blocks = SBC_BLK_8;
break;
case BT_A2DP_BLOCK_LENGTH_12:
a2dp->sbc.blocks = SBC_BLK_12;
break;
case BT_A2DP_BLOCK_LENGTH_16:
a2dp->sbc.blocks = SBC_BLK_16;
break;
}
a2dp->sbc.bitpool = active_capabilities.max_bitpool;
a2dp->codesize = sbc_get_codesize(&a2dp->sbc);
a2dp->count = sizeof(struct rtp_header) + sizeof(struct rtp_payload);
}
static int bt_setconf(struct userdata *u) {
int e;
char buf[BT_AUDIO_IPC_PACKET_SIZE];
bt_audio_rsp_msg_header_t *rsp_hdr = (void*) buf;
struct bt_setconfiguration_req *setconf_req = (void*) buf;
struct bt_setconfiguration_rsp *setconf_rsp = (void*) buf;
if (u->transport == BT_CAPABILITIES_TRANSPORT_A2DP) {
e = bt_a2dp_init(u);
if (e < 0) {
pa_log_error("a2dp_init error");
return e;
}
u->ss.format = PA_SAMPLE_S16LE;
}
else
u->ss.format = PA_SAMPLE_U8;
memset(setconf_req, 0, BT_AUDIO_IPC_PACKET_SIZE);
setconf_req->h.msg_type = BT_SETCONFIGURATION_REQ;
strncpy(setconf_req->device, u->addr, 18);
setconf_req->transport = u->transport;
if (u->transport == BT_CAPABILITIES_TRANSPORT_A2DP)
setconf_req->sbc_capabilities = u->a2dp.sbc_capabilities;
setconf_req->access_mode = BT_CAPABILITIES_ACCESS_MODE_WRITE;
e = bt_audioservice_send(u->audioservice_fd, &setconf_req->h);
if (e < 0) {
pa_log_error("failed to send BT_SETCONFIGURATION_REQ");
return e;
}
e = bt_audioservice_expect(u->audioservice_fd, &rsp_hdr->msg_h, BT_SETCONFIGURATION_RSP);
if (e < 0) {
pa_log_error("failed to expect BT_SETCONFIGURATION_RSP");
return e;
}
if (rsp_hdr->posix_errno != 0) {
pa_log_error("BT_SETCONFIGURATION failed : %s(%d)", pa_cstrerror(rsp_hdr->posix_errno), rsp_hdr->posix_errno);
return -rsp_hdr->posix_errno;
}
u->transport = setconf_rsp->transport;
u->link_mtu = setconf_rsp->link_mtu;
/* setup SBC encoder now we agree on parameters */
if (u->transport == BT_CAPABILITIES_TRANSPORT_A2DP) {
bt_a2dp_setup(&u->a2dp);
u->block_size = u->a2dp.codesize;
pa_log_info("sbc parameters:\n\tallocation=%u\n\tsubbands=%u\n\tblocks=%u\n\tbitpool=%u\n",
u->a2dp.sbc.allocation, u->a2dp.sbc.subbands, u->a2dp.sbc.blocks, u->a2dp.sbc.bitpool);
}
else
u->block_size = u->link_mtu;
return 0;
}
static int bt_getstreamfd(struct userdata *u) {
int e;
// uint32_t period_count = io->buffer_size / io->period_size;
char buf[BT_AUDIO_IPC_PACKET_SIZE];
struct bt_streamstart_req *start_req = (void*) buf;
bt_audio_rsp_msg_header_t *rsp_hdr = (void*) buf;
struct bt_streamfd_ind *streamfd_ind = (void*) buf;
memset(start_req, 0, BT_AUDIO_IPC_PACKET_SIZE);
start_req->h.msg_type = BT_STREAMSTART_REQ;
e = bt_audioservice_send(u->audioservice_fd, &start_req->h);
if (e < 0) {
pa_log_error("failed to send BT_STREAMSTART_REQ");
return e;
}
e = bt_audioservice_expect(u->audioservice_fd, &rsp_hdr->msg_h, BT_STREAMSTART_RSP);
if (e < 0) {
pa_log_error("failed to expect BT_STREAMSTART_RSP");
return e;
}
if (rsp_hdr->posix_errno != 0) {
pa_log_error("BT_START failed : %s(%d)", pa_cstrerror(rsp_hdr->posix_errno), rsp_hdr->posix_errno);
return -rsp_hdr->posix_errno;
}
e = bt_audioservice_expect(u->audioservice_fd, &streamfd_ind->h, BT_STREAMFD_IND);
if (e < 0) {
pa_log_error("failed to expect BT_STREAMFD_IND");
return e;
}
if (u->stream_fd >= 0)
pa_close(u->stream_fd);
u->stream_fd = bt_audio_service_get_data_fd(u->audioservice_fd);
if (u->stream_fd < 0) {
pa_log_error("failed to get data fd: %s (%d)",pa_cstrerror(errno), errno);
return -errno;
}
if (u->transport == BT_CAPABILITIES_TRANSPORT_A2DP) {
if (pa_socket_set_sndbuf(u->stream_fd, 10*u->link_mtu) < 0) {
pa_log_error("failed to set socket options for A2DP: %s (%d)",pa_cstrerror(errno), errno);
return -errno;
}
}
// if (setsockopt(u->stream_fd, SOL_SCO, SCO_TXBUFS, &period_count, sizeof(period_count)) == 0)
// return 0;
// if (setsockopt(u->stream_fd, SOL_SCO, SO_SNDBUF, &period_count, sizeof(period_count)) == 0)
// return 0;
// /* FIXME : handle error codes */
pa_make_fd_nonblock(u->stream_fd);
// pa_make_socket_low_delay(u->stream_fd);
return 0;
}
static int sink_process_msg(pa_msgobject *o, int code, void *data, int64_t offset, pa_memchunk *chunk) {
struct userdata *u = PA_SINK(o)->userdata;
pa_log_debug("got message: %d", code);
switch (code) {
case PA_SINK_MESSAGE_SET_STATE:
switch ((pa_sink_state_t) PA_PTR_TO_UINT(data)) {
case PA_SINK_SUSPENDED:
pa_assert(PA_SINK_IS_OPENED(u->sink->thread_info.state));
pa_smoother_pause(u->smoother, pa_rtclock_usec());
break;
case PA_SINK_IDLE:
case PA_SINK_RUNNING:
if (u->sink->thread_info.state == PA_SINK_SUSPENDED)
pa_smoother_resume(u->smoother, pa_rtclock_usec());
break;
case PA_SINK_UNLINKED:
case PA_SINK_INIT:
;
}
break;
case PA_SINK_MESSAGE_GET_LATENCY: {
pa_usec_t w, r;
r = pa_smoother_get(u->smoother, pa_rtclock_usec());
w = pa_bytes_to_usec(u->offset + u->memchunk.length, &u->sink->sample_spec);
*((pa_usec_t*) data) = w > r ? w - r : 0;
return 0;
}
}
return pa_sink_process_msg(o, code, data, offset, chunk);
}
static void sco_thread_func(void *userdata) {
struct userdata *u = userdata;
int write_type = 0;
pa_assert(u);
pa_log_debug("SCO thread starting up");
pa_thread_mq_install(&u->thread_mq);
pa_rtpoll_install(u->rtpoll);
pa_smoother_set_time_offset(u->smoother, pa_rtclock_usec());
for (;;) {
int ret;
struct pollfd *pollfd;
if (PA_SINK_IS_OPENED(u->sink->thread_info.state)) {
if (u->sink->thread_info.rewind_requested) {
pa_sink_process_rewind(u->sink, 0);
}
}
pollfd = pa_rtpoll_item_get_pollfd(u->rtpoll_item, NULL);
if (PA_SINK_IS_OPENED(u->sink->thread_info.state) && pollfd->revents) {
pa_usec_t usec;
int64_t n;
for (;;) {
/* Render some data and write it to the fifo */
ssize_t l;
void *p;
u->memchunk.memblock = pa_memblock_new(u->mempool, u->block_size);
pa_log_debug("memblock asked size %d", u->block_size);
u->memchunk.length = pa_memblock_get_length(u->memchunk.memblock);
pa_log_debug("memchunk length %d", u->memchunk.length);
pa_sink_render_into_full(u->sink, &u->memchunk);
pa_assert(u->memchunk.length > 0);
p = pa_memblock_acquire(u->memchunk.memblock);
l = pa_write(u->stream_fd, (uint8_t*) p, u->memchunk.length, &write_type);
pa_log_debug("memblock written to socket: %d bytes", l);
pa_memblock_release(u->memchunk.memblock);
pa_memblock_unref(u->memchunk.memblock);
pa_memchunk_reset(&u->memchunk);
pa_log("memchunk reseted");
pa_assert(l != 0);
if (l < 0) {
if (errno == EINTR) {
pa_log_debug("EINTR");
continue;
}
else if (errno == EAGAIN) {
pa_log_debug("EAGAIN");
goto filled_up;
}
else {
pa_log("Failed to write data to FIFO: %s", pa_cstrerror(errno));
goto fail;
}
} else {
u->offset += l;
pollfd->revents = 0;
}
}
filled_up:
n = u->offset;
#ifdef SIOCOUTQ
{
int l;
if (ioctl(u->fd, SIOCOUTQ, &l) >= 0 && l > 0)
n -= l;
}
#endif
usec = pa_bytes_to_usec(n, &u->sink->sample_spec);
if (usec > u->latency)
usec -= u->latency;
else
usec = 0;
pa_smoother_put(u->smoother, pa_rtclock_usec(), usec);
}
/* Hmm, nothing to do. Let's sleep */
pa_log_debug("SCO thread going to sleep");
pollfd->events = PA_SINK_IS_OPENED(u->sink->thread_info.state) ? POLLOUT : 0;
if ((ret = pa_rtpoll_run(u->rtpoll, TRUE)) < 0) {
pa_log("rtpoll_run < 0");
goto fail;
}
pa_log_debug("SCO thread waking up");
if (ret == 0) {
pa_log_debug("rtpoll_run == 0");
goto finish;
}
pollfd = pa_rtpoll_item_get_pollfd(u->rtpoll_item, NULL);
if (pollfd->revents & ~POLLOUT) {
pa_log_error("FIFO shutdown.");
goto fail;
}
}
fail:
/* If this was no regular exit from the loop we have to continue processing messages until we receive PA_MESSAGE_SHUTDOWN */
pa_log_debug("SCO thread failed");
pa_asyncmsgq_post(u->thread_mq.outq, PA_MSGOBJECT(u->core), PA_CORE_MESSAGE_UNLOAD_MODULE, u->module, 0, NULL, NULL);
pa_asyncmsgq_wait_for(u->thread_mq.inq, PA_MESSAGE_SHUTDOWN);
finish:
pa_log_debug("SCO thread shutting down");
}
static void a2dp_thread_func(void *userdata) {
struct userdata *u = userdata;
pa_assert(u);
pa_log_debug("A2DP Thread starting up");
pa_thread_mq_install(&u->thread_mq);
pa_rtpoll_install(u->rtpoll);
pa_smoother_set_time_offset(u->smoother, pa_rtclock_usec());
for (;;) {
int ret;
struct pollfd *pollfd;
if (PA_SINK_IS_OPENED(u->sink->thread_info.state)) {
if (u->sink->thread_info.rewind_requested) {
pa_sink_process_rewind(u->sink, 0);
}
}
pollfd = pa_rtpoll_item_get_pollfd(u->rtpoll_item, NULL);
if (PA_SINK_IS_OPENED(u->sink->thread_info.state) && pollfd->revents) {
pa_usec_t usec;
int64_t n;
ssize_t l;
int write_type = 0, written;
struct bt_a2dp *a2dp = &u->a2dp;
struct rtp_header *header = (void *) a2dp->buffer;
struct rtp_payload *payload = (void *) (a2dp->buffer + sizeof(*header));
do {
/* Render some data */
int frame_size, encoded;
void *p;
u->memchunk.memblock = pa_memblock_new(u->mempool, u->block_size);
pa_log_debug("memblock asked size %d", u->block_size);
u->memchunk.length = pa_memblock_get_length(u->memchunk.memblock);
pa_log_debug("memchunk length %d", u->memchunk.length);
pa_sink_render_into_full(u->sink, &u->memchunk);
pa_assert(u->memchunk.length > 0);
p = pa_memblock_acquire(u->memchunk.memblock);
frame_size = sbc_get_frame_length(&a2dp->sbc);
pa_log_debug("SBC frame_size: %d", frame_size);
encoded = sbc_encode(&a2dp->sbc, (uint8_t*) p, a2dp->codesize, a2dp->buffer + a2dp->count,
sizeof(a2dp->buffer) - a2dp->count, &written);
pa_log_debug("SBC: encoded: %d; written: %d", encoded, written);
if (encoded <= 0) {
pa_log_error("SBC encoding error (%d)", encoded);
goto fail;
}
pa_memblock_release(u->memchunk.memblock);
pa_memblock_unref(u->memchunk.memblock);
pa_memchunk_reset(&u->memchunk);
pa_log_debug("memchunk reseted");
a2dp->count += written;
a2dp->frame_count++;
a2dp->samples += encoded / frame_size;
a2dp->nsamples += encoded / frame_size;
} while (a2dp->count + written <= u->link_mtu);
/* write it to the fifo */
memset(a2dp->buffer, 0, sizeof(*header) + sizeof(*payload));
payload->frame_count = a2dp->frame_count;
header->v = 2;
header->pt = 1;
header->sequence_number = htons(a2dp->seq_num);
header->timestamp = htonl(a2dp->nsamples);
header->ssrc = htonl(1);
avdtp_write:
l = pa_write(u->stream_fd, a2dp->buffer, a2dp->count, write_type);
pa_log_debug("avdtp_write: requested %d bytes; written %d bytes", a2dp->count, l);
pa_assert(l != 0);
if (l < 0) {
if (errno == EINTR) {
pa_log_debug("EINTR");
continue;
}
else if (errno == EAGAIN) {
pa_log_debug("EAGAIN");
goto avdtp_write;
}
else {
pa_log_error("Failed to write data to FIFO: %s", pa_cstrerror(errno));
goto fail;
}
}
u->offset += a2dp->codesize*a2dp->frame_count;
pollfd->revents = 0;
/* Reset buffer of data to send */
a2dp->count = sizeof(struct rtp_header) + sizeof(struct rtp_payload);
a2dp->frame_count = 0;
a2dp->samples = 0;
a2dp->seq_num++;
/* feed the time smoother */
n = u->offset;
#ifdef SIOCOUTQ
{
int ll;
if (ioctl(u->fd, SIOCOUTQ, &ll) >= 0 && ll > 0)
n -= ll;
}
#endif
usec = pa_bytes_to_usec(n, &u->sink->sample_spec);
if (usec > u->latency)
usec -= u->latency;
else
usec = 0;
pa_smoother_put(u->smoother, pa_rtclock_usec(), usec);
}
/* Hmm, nothing to do. Let's sleep */
pa_log_debug("A2DP thread going to sleep");
pollfd->events = PA_SINK_IS_OPENED(u->sink->thread_info.state) ? POLLOUT : 0;
if ((ret = pa_rtpoll_run(u->rtpoll, TRUE)) < 0) {
pa_log_error("rtpoll_run < 0");
goto fail;
}
pa_log_debug("A2DP thread waking up");
if (ret == 0) {
pa_log_debug("rtpoll_run == 0");
goto finish;
}
pollfd = pa_rtpoll_item_get_pollfd(u->rtpoll_item, NULL);
if (pollfd->revents & ~POLLOUT) {
pa_log_error("FIFO shutdown.");
goto fail;
}
}
fail:
/* If this was no regular exit from the loop we have to continue processing messages until we receive PA_MESSAGE_SHUTDOWN */
pa_log_debug("A2DP thread failed");
pa_asyncmsgq_post(u->thread_mq.outq, PA_MSGOBJECT(u->core), PA_CORE_MESSAGE_UNLOAD_MODULE, u->module, 0, NULL, NULL);
pa_asyncmsgq_wait_for(u->thread_mq.inq, PA_MESSAGE_SHUTDOWN);
finish:
pa_log_debug("A2DP thread shutting down");
}
int pa__init(pa_module* m) {
int e;
pa_modargs *ma;
pa_sink_new_data data;
struct pollfd *pollfd;
struct userdata *u;
pa_assert(m);
m->userdata = u = pa_xnew0(struct userdata, 1);
u->module = m;
u->core = m->core;
u->audioservice_fd = -1;
u->stream_fd = -1;
u->transport = -1;
u->offset = 0;
u->latency = 0;
u->a2dp.sbc_initialized = FALSE;
u->smoother = pa_smoother_new(PA_USEC_PER_SEC, PA_USEC_PER_SEC*2, TRUE, 10);
u->mempool = pa_mempool_new(FALSE);
pa_memchunk_reset(&u->memchunk);
u->rtpoll = pa_rtpoll_new();
pa_thread_mq_init(&u->thread_mq, u->core->mainloop, u->rtpoll);
u->rtpoll_item = NULL;
if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
pa_log_error("failed to parse module arguments");
goto fail;
}
if (!(u->name = pa_xstrdup(pa_modargs_get_value(ma, "name", DEFAULT_SINK_NAME)))) {
pa_log_error("failed to get device name from module arguments");
goto fail;
}
if (!(u->addr = pa_xstrdup(pa_modargs_get_value(ma, "addr", NULL)))) {
pa_log_error("failed to get device address from module arguments");
goto fail;
}
if (!(u->profile = pa_xstrdup(pa_modargs_get_value(ma, "profile", NULL)))) {
pa_log_error("failed to get profile from module arguments");
goto fail;
}
if (pa_modargs_get_value_u32(ma, "rate", &u->ss.rate) < 0) {
pa_log_error("failed to get rate from module arguments");
goto fail;
}
if (pa_modargs_get_value_u32(ma, "channels", &u->ss.channels) < 0) {
pa_log_error("failed to get channels from module arguments");
goto fail;
}
/* connect to the bluez audio service */
u->audioservice_fd = bt_audio_service_open();
if (u->audioservice_fd <= 0) {
pa_log_error("couldn't connect to bluetooth audio service");
goto fail;
}
pa_log_debug("connected to the bluetooth audio service");
/* queries device capabilities */
e = bt_getcaps(u);
if (e < 0) {
pa_log_error("failed to get device capabilities");
goto fail;
}
pa_log_debug("got device capabilities");
/* configures the connection */
e = bt_setconf(u);
if (e < 0) {
pa_log_error("failed to set config");
goto fail;
}
pa_log_debug("connection to the device configured");
/* gets the device socket */
e = bt_getstreamfd(u);
if (e < 0) {
pa_log_error("failed to get stream fd (%d)", e);
goto fail;
}
pa_log_debug("got the device socket");
/* create sink */
pa_sink_new_data_init(&data);
data.driver = __FILE__;
data.module = m;
pa_sink_new_data_set_name(&data, u->name);
pa_sink_new_data_set_sample_spec(&data, &u->ss);
pa_proplist_sets(data.proplist, PA_PROP_DEVICE_STRING, u->name);
pa_proplist_setf(data.proplist, PA_PROP_DEVICE_DESCRIPTION, "Bluetooth sink '%s' (%s)", u->name, u->addr);
u->sink = pa_sink_new(m->core, &data, PA_SINK_HARDWARE|PA_SINK_LATENCY);
pa_sink_new_data_done(&data);
if (!u->sink) {
pa_log_error("failed to create sink");
goto fail;
}
u->sink->userdata = u;
u->sink->parent.process_msg = sink_process_msg;
pa_sink_set_asyncmsgq(u->sink, u->thread_mq.inq);
pa_sink_set_rtpoll(u->sink, u->rtpoll);
u->rtpoll_item = pa_rtpoll_item_new(u->rtpoll, PA_RTPOLL_NEVER, 1);
pollfd = pa_rtpoll_item_get_pollfd(u->rtpoll_item, NULL);
pollfd->fd = u->stream_fd;
pollfd->events = pollfd->revents = 0;
/* start rt thread */
if (u->transport == BT_CAPABILITIES_TRANSPORT_A2DP) {
if (!(u->thread = pa_thread_new(a2dp_thread_func, u))) {
pa_log_error("failed to create A2DP thread");
goto fail;
}
}
else {
if (!(u->thread = pa_thread_new(sco_thread_func, u))) {
pa_log_error("failed to create SCO thread");
goto fail;
}
}
pa_sink_put(u->sink);
pa_modargs_free(ma);
return 0;
fail:
if (ma)
pa_modargs_free(ma);
pa__done(m);
return -1;
}
void pa__done(pa_module *m) {
struct userdata *u;
pa_assert(m);
if (!(u = m->userdata))
return;
if (u->sink)
pa_sink_unlink(u->sink);
if (u->thread) {
pa_asyncmsgq_send(u->thread_mq.inq, NULL, PA_MESSAGE_SHUTDOWN, NULL, 0, NULL);
pa_thread_free(u->thread);
}
pa_thread_mq_done(&u->thread_mq);
if (u->sink)
pa_sink_unref(u->sink);
if (u->rtpoll_item)
pa_rtpoll_item_free(u->rtpoll_item);
if (u->rtpoll)
pa_rtpoll_free(u->rtpoll);
if (u->memchunk.memblock)
pa_memblock_unref(u->memchunk.memblock);
/* TODO: free mempool */
if (u->smoother)
pa_smoother_free(u->smoother);
if (u->name)
pa_xfree(u->name);
if (u->addr)
pa_xfree(u->addr);
if (u->profile)
pa_xfree(u->profile);
if (u->stream_fd >= 0)
pa_close(u->stream_fd);
if (u->audioservice_fd >= 0)
pa_close(u->audioservice_fd);
pa_xfree(u);
}
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