All, here is the first version of the patch that moves to the newapi
usage... yeheee !!
As nobody suggested a new name, i've just chose one, which is
"btaudioservice.h" :-). Of course this can be changed if somebody
prefers a better name :-)
This patch does not bring any new feature by itself, it's goal is only
to get rid from the ipc.h stuff. However is is already quite big, but i
really can't make it smaller without breaking stuff that is known to
work today :-(
I did some basic testing of the patch, which is:
- play a file using a2dp, seek during playing (audacious)
- play a file using a2dp, seek during playing (rhythmnbox)
- play a file using SCO, seek during playing (audacious)
- record and play file using aplay & arecord.
I didn't notice any regression, but i don't want to fool anybody : such
a big patch will inevitably bring its set of regressions, it's just that
i haven't found them yet :-)
Due to the fairly big nature of the patch, i would suggest to wait for
3.21 before moving to the new api, this will give us the usual time
between two bluez releases to :
- fix regressions introduced (my job :-) )
- upgrading the gstreamer plugin to use the new api ( i'd prefer
thiagoss to work on this one (with my support of course), as i've never
put my nose on this part of the code )
As usual, comments are welcome. ;-)
Cheers,
Fabien
Hi Marcel,
> don't worry about any name, because before this goes into a state where
> I actually consider it being installed, I have changed my mind too many
> times.
lol :-)
I really don't care about the name, it's more worried about changing it
too often, given the fact if i remember well CVS is quite a pain in this
case :-)
Cheers,
Fabien
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Hi Fabien,
> >> As nobody suggested a new name, i've just chose one, which is
> >> "btaudioservice.h" :-). Of course this can be changed if somebody
> >> prefers a better name :-)
> >
> > maybe audioclient.h. something like that would mesh best if it was
> > ever made officially externally available (ie
> > /usr/include/bluetooth/audioclient.h)
>
> Sounds reasonable :-)
don't worry about any name, because before this goes into a state where
I actually consider it being installed, I have changed my mind too many
times.
Regards
Marcel
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Hi Brad,
> This is all stuff we definitely need. Johan and Luiz have been working
> more closely with this so I will leave it up to them to
> comment/commit.
>
No problem :-)
>> As nobody suggested a new name, i've just chose one, which is
>> "btaudioservice.h" :-). Of course this can be changed if somebody
>> prefers a better name :-)
>
> maybe audioclient.h. something like that would mesh best if it was
> ever made officially externally available (ie
> /usr/include/bluetooth/audioclient.h)
Sounds reasonable :-)
Cheers,
Fabien
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Fabien
> All, here is the first version of the patch that moves to the newapi
> usage... yeheee !!
This is all stuff we definitely need. Johan and Luiz have been working
more closely with this so I will leave it up to them to
comment/commit.
> As nobody suggested a new name, i've just chose one, which is
> "btaudioservice.h" :-). Of course this can be changed if somebody
> prefers a better name :-)
maybe audioclient.h. something like that would mesh best if it was
ever made officially externally available (ie
/usr/include/bluetooth/audioclient.h)
brad
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Index: pcm_bluetooth.c
===================================================================
--- pcm_bluetooth.c (.../tags/20071019_1300/audio) (révision 144)
+++ pcm_bluetooth.c (.../branches/20071019_1300/audio) (révision 144)
@@ -33,13 +33,13 @@
#include <netinet/in.h>
#include <alsa/asoundlib.h>
#include <alsa/pcm_external.h>
-#include "ipc.h"
+#include "btaudioservice.h"
#include "sbc.h"
#include "rtp.h"
//#define ENABLE_DEBUG
#define UINT_SECS_MAX (UINT_MAX / 1000000 - 1)
@@ -65,38 +65,65 @@
#ifndef SCO_RXBUFS
#define SCO_RXBUFS 0x04
#endif
struct bluetooth_a2dp {
- sbc_t sbc; /* Codec data */
- int codesize; /* SBC codesize */
- int samples; /* Number of encoded samples */
- uint8_t buffer[MAX_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*/
+ SBC_capabilities_t sbc_capabilities;
+ sbc_t sbc; /* Codec data */
+ int sbc_initialized; /* Keep track if the encoder is initialized */
+ int codesize; /* SBC codesize */
+ int samples; /* Number of encoded samples */
+ uint8_t buffer[MAX_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 bluetooth_alsa_config {
+ char device[18]; /* Address of the remote Device */
+ int has_device;
+ uint8_t transport; /* Requested transport */
+ int has_transport;
+ uint16_t rate;
+ int has_rate;
+ uint8_t channel_mode; /* A2DP only */
+ int has_channel_mode;
+ uint8_t allocation_method; /* A2DP only */
+ int has_allocation_method;
+ uint8_t subbands; /* A2DP only */
+ int has_subbands;
+ uint8_t block_length; /* A2DP only */
+ int has_block_length;
+ uint8_t bitpool; /* A2DP only */
+ int has_bitpool;
};
struct bluetooth_data {
snd_pcm_ioplug_t io;
+ struct bluetooth_alsa_config alsa_config; /* ALSA resource file parameters */
volatile snd_pcm_sframes_t hw_ptr;
- struct ipc_data_cfg cfg; /* Bluetooth device config */
- struct pollfd stream; /* Audio stream filedescriptor */
- struct pollfd server; /* Audio daemon filedescriptor */
- uint8_t buffer[MAX_BUFFER_SIZE];/* Encoded transfer buffer */
- int count; /* Transfer buffer counter */
- struct bluetooth_a2dp a2dp; /* A2DP data */
+ int transport; /* chosen transport SCO or AD2P */
+ int link_mtu; /* MTU for selected transport channel */
+ volatile struct pollfd stream; /* Audio stream filedescriptor */
+ struct pollfd server; /* Audio daemon filedescriptor */
+ uint8_t buffer[MAX_BUFFER_SIZE]; /* Encoded transfer buffer */
+ int count; /* Transfer buffer counter */
+ struct bluetooth_a2dp a2dp; /* A2DP data */
- pthread_t hw_thread; /* Makes virtual hw pointer move */
- int pipefd[2]; /* Inter thread communication */
+ pthread_t hw_thread; /* Makes virtual hw pointer move */
+ int pipefd[2]; /* Inter thread communication */
int stopped;
};
+static int audioservice_send(int sk, const bt_audio_msg_header_t * msg);
+static int audioservice_expect(int sk, bt_audio_msg_header_t * outmsg,
+ int expected_type);
+
static int bluetooth_start(snd_pcm_ioplug_t *io)
{
DBG("bluetooth_start %p", io);
return 0;
}
@@ -184,78 +211,19 @@
}
data->hw_thread = 0;
pthread_exit(NULL);
}
-#if 0
-static int bluetooth_state_init(struct ipc_packet *pkt, int newstate)
-{
- struct ipc_data_state *state = (void *) pkt->data;
-
- pkt->length = sizeof(*state);
- pkt->type = PKT_TYPE_STATE_REQ;
- pkt->error = PKT_ERROR_NONE;
- state->state = newstate;
-
- return 0;
-}
-
-static int bluetooth_state(struct bluetooth_data *data, int newstate)
-{
- char buf[IPC_MTU];
- struct ipc_packet *pkt = (void *) buf;
- struct ipc_data_state *state = (void *) pkt->data;
- int ret;
-
- memset(buf, 0, sizeof(buf));
-
- ret = bluetooth_state_init(pkt, newstate);
- if (ret < 0)
- return -ret;
-
- ret = send(data->server.fd, pkt, sizeof(*pkt) + pkt->length, 0);
- if (ret < 0)
- return -errno;
- else if (ret == 0)
- return -EIO;
-
- DBG("OK - %d bytes sent. Waiting for response...", ret);
-
- memset(buf, 0, sizeof(buf));
-
- ret = recv(data->server.fd, buf, sizeof(*pkt) + sizeof(*state), 0);
- if (ret < 0)
- return -errno;
- else if (ret == 0)
- return -EIO;
-
- if (pkt->type != PKT_TYPE_STATE_RSP) {
- SNDERR("Unexpected packet type %d received", pkt->type);
- return -EINVAL;
- }
-
- if (pkt->error != PKT_ERROR_NONE) {
- SNDERR("Error %d while configuring device", pkt->error);
- return -pkt->error;
- }
-
- return 0;
-}
-#endif
-
static int bluetooth_playback_start(snd_pcm_ioplug_t *io)
{
struct bluetooth_data *data = io->private_data;
int err;
DBG("%p", io);
-#if 0
- bluetooth_state(data, STATE_STREAMING);
-#endif
data->stopped = 0;
if (data->hw_thread)
return 0;
err = pthread_create(&data->hw_thread, 0, playback_hw_thread, data);
@@ -266,15 +234,12 @@
static int bluetooth_playback_stop(snd_pcm_ioplug_t *io)
{
struct bluetooth_data *data = io->private_data;
DBG("%p", io);
-#if 0
- bluetooth_state(data, STATE_CONNECTED);
-#endif
data->stopped = 1;
return 0;
}
static snd_pcm_sframes_t bluetooth_pointer(snd_pcm_ioplug_t *io)
@@ -286,23 +251,23 @@
static void bluetooth_exit(struct bluetooth_data *data)
{
struct bluetooth_a2dp *a2dp = &data->a2dp;
if (data->server.fd >= 0)
- close(data->server.fd);
+ bt_audio_service_close(data->server.fd);
if (data->stream.fd >= 0)
close(data->stream.fd);
if (data->hw_thread) {
pthread_cancel(data->hw_thread);
pthread_join(data->hw_thread, 0);
}
- if (data->cfg.codec == CFG_CODEC_SBC)
+ if (a2dp->sbc_initialized)
sbc_finish(&a2dp->sbc);
if (data->pipefd[0] > 0)
close(data->pipefd[0]);
if (data->pipefd[1] > 0)
@@ -323,82 +288,207 @@
}
static int bluetooth_prepare(snd_pcm_ioplug_t *io)
{
struct bluetooth_data *data = io->private_data;
char c = 'w';
+ char buf[BT_AUDIO_IPC_PACKET_SIZE];
+ struct bt_streamstart_req *start_req = (void*) buf;
+ struct bt_streamstart_rsp *start_rsp = (void*) buf;
+ struct bt_datafd_ind *datafd_ind = (void*) buf;
+ uint32_t period_count = io->buffer_size / io->period_size;
+ int opt_name, err;
+ struct timeval t = { 0, period_count };
DBG("Preparing with io->period_size=%lu io->buffer_size=%lu",
io->period_size, io->buffer_size);
+ /* As we're gonna receive messages on the server socket, we have to stop the
+ hw thread that is polling on it, if any */
+
+ if (data->hw_thread) {
+ pthread_cancel(data->hw_thread);
+ pthread_join(data->hw_thread, 0);
+ data->hw_thread = 0;
+ }
+
if (io->stream == SND_PCM_STREAM_PLAYBACK)
/* If not null for playback, xmms doesn't display time
* correctly */
data->hw_ptr = 0;
else
/* ALSA library is really picky on the fact hw_ptr is not null.
* If it is, capture won't start */
data->hw_ptr = io->period_size;
- /* wake up any client polling at us */
- return write(data->pipefd[1], &c, 1);
-}
+ /* send start */
+ memset(start_req, 0, BT_AUDIO_IPC_PACKET_SIZE);
+ start_req->h.msg_type = BT_STREAMSTART_REQ;
-static int bluetooth_hsp_hw_params(snd_pcm_ioplug_t *io,
- snd_pcm_hw_params_t *params)
-{
- struct bluetooth_data *data = io->private_data;
- uint32_t period_count = io->buffer_size / io->period_size;
- int opt_name, err;
+ err = audioservice_send(data->server.fd, &start_req->h);
+ if (err < 0)
+ return err;
+
+ err = audioservice_expect(data->server.fd, &start_rsp->h, BT_STREAMSTART_RSP);
+ if (err < 0)
+ return err;
+
+ if (start_rsp->posix_errno != 0) {
+ SNDERR("BT_START failed : %s(%d)",
+ strerror(start_rsp->posix_errno),
+ start_rsp->posix_errno);
+ return -start_rsp->posix_errno;
+ }
+
+ err = audioservice_expect(data->server.fd, &datafd_ind->h, BT_STREAMFD_IND);
+ if (err < 0)
+ return err;
+
+ if (data->stream.fd >= 0)
+ close(data->stream.fd);
- DBG("fd=%d period_count=%d", data->stream.fd, period_count);
+ data->stream.fd = bt_audio_service_get_data_fd(data->server.fd);
+ if (data->stream.fd < 0) {
+ return -errno;
+ }
+
+ if (data->transport == BT_CAPABILITIES_TRANSPORT_A2DP) {
+ opt_name = (io->stream == SND_PCM_STREAM_PLAYBACK) ?
+ SO_SNDTIMEO : SO_RCVTIMEO;
- opt_name = (io->stream == SND_PCM_STREAM_PLAYBACK) ?
+ if (setsockopt(data->stream.fd, SOL_SOCKET, opt_name, &t,
+ sizeof(t)) < 0) {
+ return -errno;
+ }
+ } else {
+ opt_name = (io->stream == SND_PCM_STREAM_PLAYBACK) ?
SCO_TXBUFS : SCO_RXBUFS;
- if (setsockopt(data->stream.fd, SOL_SCO, opt_name, &period_count,
+ if (setsockopt(data->stream.fd, SOL_SCO, opt_name, &period_count,
sizeof(period_count)) == 0)
- return 0;
+ return 0;
- opt_name = (io->stream == SND_PCM_STREAM_PLAYBACK) ?
+ opt_name = (io->stream == SND_PCM_STREAM_PLAYBACK) ?
SO_SNDBUF : SO_RCVBUF;
- if (setsockopt(data->stream.fd, SOL_SCO, opt_name, &period_count,
+ if (setsockopt(data->stream.fd, SOL_SCO, opt_name, &period_count,
sizeof(period_count)) == 0)
- return 0;
-
- err = errno;
+ return 0;
- SNDERR("%s (%d)", strerror(err), err);
+ /* FIXME : handle error codes */
+ }
- /* FIXME: We should not ignores errors in the future. */
- return 0;
+ /* wake up any client polling at us */
+ return write(data->pipefd[1], &c, 1);
}
static int bluetooth_a2dp_hw_params(snd_pcm_ioplug_t *io,
snd_pcm_hw_params_t *params)
{
struct bluetooth_data *data = io->private_data;
- uint32_t period_count = io->buffer_size / io->period_size;
- int opt_name, err;
- struct timeval t = { 0, period_count };
+ struct bluetooth_a2dp *a2dp = &data->a2dp;
+ char buf[BT_AUDIO_IPC_PACKET_SIZE];
+ struct bt_setconfiguration_req *setconf_req = (void*) buf;
+ struct bt_setconfiguration_rsp *setconf_rsp = (void*) buf;
+ int err;
+ SBC_capabilities_t active_capabilities;
- DBG("fd=%d period_count=%d", data->stream.fd, period_count);
+ DBG("Preparing with io->period_size=%lu io->buffer_size=%lu",
+ io->period_size, io->buffer_size);
- opt_name = (io->stream == SND_PCM_STREAM_PLAYBACK) ?
- SO_SNDTIMEO : SO_RCVTIMEO;
+ /* FIXME: this needs to be really implemented (take into account
+ real asoundrc settings + ALSA hw settings ) once server side sends us
+ more than one possible configuration */
+ active_capabilities = a2dp->sbc_capabilities;
+
+ memset(setconf_req, 0, BT_AUDIO_IPC_PACKET_SIZE);
+ setconf_req->h.msg_type = BT_SETCONFIGURATION_REQ;
+ setconf_req->sbc_capabilities = active_capabilities;
- if (setsockopt(data->stream.fd, SOL_SOCKET, opt_name, &t,
- sizeof(t)) == 0)
- return 0;
+ err = audioservice_send(data->server.fd, &setconf_req->h);
+ if (err < 0)
+ return err;
- err = errno;
+ err = audioservice_expect(data->server.fd, &setconf_rsp->h, BT_SETCONFIGURATION_RSP);
+ if (err < 0)
+ return err;
- SNDERR("%s (%d)", strerror(err), err);
+ if (setconf_rsp->posix_errno != 0) {
+ SNDERR("BT_SETCONFIGURATION failed : %s(%d)",
+ strerror(setconf_rsp->posix_errno),
+ setconf_rsp->posix_errno);
+ return -setconf_rsp->posix_errno;
+ }
- return -err;
+ /* Setup SBC encoder now we agree on parameters */
+ if (a2dp->sbc_initialized)
+ sbc_finish(&a2dp->sbc);
+
+ /* FIXME: init using flags? */
+ sbc_init(&a2dp->sbc, 0);
+ a2dp->sbc_initialized = 1;
+ if (active_capabilities.frequency & BT_A2DP_SAMPLING_FREQ_16000)
+ a2dp->sbc.rate = 16000;
+
+ if (active_capabilities.frequency & BT_A2DP_SAMPLING_FREQ_32000)
+ a2dp->sbc.rate = 32000;
+
+ if (active_capabilities.frequency & BT_A2DP_SAMPLING_FREQ_44100)
+ a2dp->sbc.rate = 44100;
+
+ if (active_capabilities.frequency & BT_A2DP_SAMPLING_FREQ_48000)
+ a2dp->sbc.rate = 48000;
+
+ if (active_capabilities.channel_mode & BT_A2DP_CHANNEL_MODE_MONO)
+ a2dp->sbc.channels = 1;
+ else
+ a2dp->sbc.channels = 2;
+
+ if (active_capabilities.channel_mode &
+ (BT_A2DP_CHANNEL_MODE_MONO || BT_A2DP_CHANNEL_MODE_JOINT_STEREO))
+ a2dp->sbc.joint = 1;
+ else
+ a2dp->sbc.joint = 0;
+
+ a2dp->sbc.allocation = active_capabilities.allocation_method
+ == BT_A2DP_ALLOCATION_SNR ? 0x01 : 0x00;
+
+ switch (active_capabilities.subbands) {
+ case BT_A2DP_SUBBANDS_4:
+ a2dp->sbc.subbands = 4;
+ break;
+ case BT_A2DP_SUBBANDS_8:
+ a2dp->sbc.subbands = 8;
+ break;
+ }
+
+ switch (active_capabilities.block_length) {
+ case BT_A2DP_BLOCK_LENGTH_4:
+ a2dp->sbc.blocks = 4;
+ break;
+ case BT_A2DP_BLOCK_LENGTH_8:
+ a2dp->sbc.blocks = 8;
+ break;
+ case BT_A2DP_BLOCK_LENGTH_12:
+ a2dp->sbc.blocks = 12;
+ break;
+ case BT_A2DP_BLOCK_LENGTH_16:
+ a2dp->sbc.blocks = 16;
+ break;
+ }
+
+ a2dp->sbc.bitpool = active_capabilities.max_bitpool;
+ a2dp->codesize = a2dp->sbc.subbands * a2dp->sbc.blocks *
+ a2dp->sbc.channels * 2;
+ a2dp->count = sizeof(struct rtp_header) + sizeof(struct rtp_payload);
+
+ DBG("\tallocation=%u\n\tsubbands=%u\n\tblocks=%u\n\tbitpool=%u\n",
+ a2dp->sbc.allocation, a2dp->sbc.subbands, a2dp->sbc.blocks,
+ a2dp->sbc.bitpool);
+
+ return 0;
}
static int bluetooth_poll_descriptors(snd_pcm_ioplug_t *io,
struct pollfd *pfd, unsigned int space)
{
struct bluetooth_data *data = io->private_data;
@@ -470,55 +560,54 @@
static snd_pcm_sframes_t bluetooth_hsp_read(snd_pcm_ioplug_t *io,
const snd_pcm_channel_area_t *areas,
snd_pcm_uframes_t offset, snd_pcm_uframes_t size)
{
struct bluetooth_data *data = io->private_data;
- struct ipc_data_cfg cfg = data->cfg;
snd_pcm_uframes_t frames_to_write, ret;
unsigned char *buff;
int nrecv, frame_size = 0;
DBG("areas->step=%u areas->first=%u offset=%lu size=%lu io->nonblock=%u",
areas->step, areas->first, offset, size, io->nonblock);
if (data->count > 0)
goto proceed;
frame_size = areas->step / 8;
- nrecv = recv(data->stream.fd, data->buffer, cfg.pkt_len,
+ nrecv = recv(data->stream.fd, data->buffer, data->link_mtu,
MSG_WAITALL | (io->nonblock ? MSG_DONTWAIT : 0));
if (nrecv < 0) {
ret = (errno == EPIPE) ? -EIO : -errno;
goto done;
}
- if (nrecv != cfg.pkt_len) {
+ if (nrecv != data->link_mtu) {
ret = -EIO;
SNDERR(strerror(-ret));
goto done;
}
/* Increment hardware transmition pointer */
- data->hw_ptr = (data->hw_ptr + cfg.pkt_len / cfg.sample_size) %
+ data->hw_ptr = (data->hw_ptr + data->link_mtu / frame_size) %
io->buffer_size;
proceed:
buff = (unsigned char *) areas->addr +
(areas->first + areas->step * offset) / 8;
- if ((data->count + size * frame_size) <= cfg.pkt_len)
+ if ((data->count + size * frame_size) <= data->link_mtu)
frames_to_write = size;
else
- frames_to_write = (cfg.pkt_len - data->count) / frame_size;
+ frames_to_write = (data->link_mtu - data->count) / frame_size;
memcpy(buff, data->buffer + data->count, frame_size * frames_to_write);
data->count += (frame_size * frames_to_write);
- data->count %= cfg.pkt_len;
+ data->count %= data->link_mtu;
/* Return written frames count */
ret = frames_to_write;
done:
DBG("returning %lu", ret);
@@ -527,13 +616,12 @@
static snd_pcm_sframes_t bluetooth_hsp_write(snd_pcm_ioplug_t *io,
const snd_pcm_channel_area_t *areas,
snd_pcm_uframes_t offset, snd_pcm_uframes_t size)
{
struct bluetooth_data *data = io->private_data;
- struct ipc_data_cfg cfg = data->cfg;
snd_pcm_sframes_t ret = 0;
snd_pcm_uframes_t frames_to_read;
uint8_t *buff;
int rsend, frame_size;
DBG("areas->step=%u areas->first=%u offset=%lu, size=%lu io->nonblock=%u",
@@ -544,32 +632,32 @@
if (ret == 0)
ret = -EPIPE;
goto done;
}
frame_size = areas->step / 8;
- if ((data->count + size * frame_size) <= cfg.pkt_len)
+ if ((data->count + size * frame_size) <= data->link_mtu)
frames_to_read = size;
else
- frames_to_read = (cfg.pkt_len - data->count) / frame_size;
+ frames_to_read = (data->link_mtu - data->count) / frame_size;
DBG("count=%d frames_to_read=%lu", data->count, frames_to_read);
/* Ready for more data */
buff = (uint8_t *) areas->addr +
(areas->first + areas->step * offset) / 8;
memcpy(data->buffer + data->count, buff, frame_size * frames_to_read);
/* Remember we have some frames in the pipe now */
data->count += frames_to_read * frame_size;
- if (data->count != cfg.pkt_len) {
+ if (data->count != data->link_mtu) {
ret = frames_to_read;
goto done;
}
- rsend = send(data->stream.fd, data->buffer, cfg.pkt_len,
+ rsend = send(data->stream.fd, data->buffer, data->link_mtu,
io->nonblock ? MSG_DONTWAIT : 0);
if (rsend > 0) {
/* Reset count pointer */
data->count = 0;
ret = frames_to_read;
@@ -666,13 +754,13 @@
if ((data->count + size * frame_size) <= a2dp->codesize)
frames_to_read = size;
else
frames_to_read = (a2dp->codesize - data->count) / frame_size;
DBG("count=%d frames_to_read=%lu", data->count, frames_to_read);
- DBG("a2dp.count=%d cfg.pkt_len=%d", a2dp->count, data->cfg.pkt_len);
+ DBG("a2dp.count=%d data.link_mtu=%d", a2dp->count, data->link_mtu);
/* FIXME: If state is not streaming then return */
/* Ready for more data */
buff = (uint8_t *) areas->addr +
(areas->first + areas->step * offset) / 8;
@@ -693,13 +781,13 @@
}
data->count -= encoded;
DBG("encoded=%d a2dp.sbc.len=%d", encoded, a2dp->sbc.len);
- if (a2dp->count + a2dp->sbc.len >= data->cfg.pkt_len) {
+ if (a2dp->count + a2dp->sbc.len >= data->link_mtu) {
ret = avdtp_write(data);
if (ret < 0) {
if (-ret == EPIPE)
ret = -EIO;
goto done;
}
@@ -739,26 +827,24 @@
static snd_pcm_ioplug_callback_t bluetooth_hsp_playback = {
.start = bluetooth_playback_start,
.stop = bluetooth_playback_stop,
.pointer = bluetooth_pointer,
.close = bluetooth_close,
- .hw_params = bluetooth_hsp_hw_params,
.prepare = bluetooth_prepare,
.transfer = bluetooth_hsp_write,
.poll_descriptors = bluetooth_playback_poll_descriptors,
.poll_revents = bluetooth_playback_poll_revents,
.delay = bluetooth_playback_delay,
};
static snd_pcm_ioplug_callback_t bluetooth_hsp_capture = {
.start = bluetooth_start,
.stop = bluetooth_stop,
.pointer = bluetooth_pointer,
.close = bluetooth_close,
- .hw_params = bluetooth_hsp_hw_params,
.prepare = bluetooth_prepare,
.transfer = bluetooth_hsp_read,
.poll_descriptors = bluetooth_poll_descriptors,
.poll_revents = bluetooth_poll_revents,
};
@@ -789,24 +875,23 @@
#define ARRAY_NELEMS(a) (sizeof((a)) / sizeof((a)[0]))
static int bluetooth_hsp_hw_constraint(snd_pcm_ioplug_t *io)
{
struct bluetooth_data *data = io->private_data;
- struct ipc_data_cfg cfg = data->cfg;
snd_pcm_access_t access_list[] = {
SND_PCM_ACCESS_RW_INTERLEAVED,
/* Mmap access is really useless fo this driver, but we
* support it because some pieces of software out there
* insist on using it */
SND_PCM_ACCESS_MMAP_INTERLEAVED
};
unsigned int format_list[] = {
SND_PCM_FORMAT_S16_LE
};
- int err, channels;
+ int err;
/* access type */
err = snd_pcm_ioplug_set_param_list(io, SND_PCM_IOPLUG_HW_ACCESS,
ARRAY_NELEMS(access_list), access_list);
if (err < 0)
return err;
@@ -815,27 +900,26 @@
err = snd_pcm_ioplug_set_param_list(io, SND_PCM_IOPLUG_HW_FORMAT,
ARRAY_NELEMS(format_list), format_list);
if (err < 0)
return err;
/* supported channels */
- channels = cfg.mode == CFG_MODE_MONO ? 1 : 2;
err = snd_pcm_ioplug_set_param_minmax(io, SND_PCM_IOPLUG_HW_CHANNELS,
- channels, channels);
+ 1, 1);
if (err < 0)
return err;
/* supported rate */
err = snd_pcm_ioplug_set_param_minmax(io, SND_PCM_IOPLUG_HW_RATE,
- cfg.rate, cfg.rate);
+ 8000, 8000);
if (err < 0)
return err;
/* supported block size */
err = snd_pcm_ioplug_set_param_minmax(io, SND_PCM_IOPLUG_HW_PERIOD_BYTES,
- cfg.pkt_len, cfg.pkt_len);
+ data->link_mtu, data->link_mtu);
if (err < 0)
return err;
err = snd_pcm_ioplug_set_param_minmax(io, SND_PCM_IOPLUG_HW_PERIODS,
2, 200);
if (err < 0)
@@ -845,24 +929,25 @@
}
static int bluetooth_a2dp_hw_constraint(snd_pcm_ioplug_t *io)
{
struct bluetooth_data *data = io->private_data;
struct bluetooth_a2dp *a2dp = &data->a2dp;
- struct ipc_data_cfg cfg = data->cfg;
snd_pcm_access_t access_list[] = {
SND_PCM_ACCESS_RW_INTERLEAVED,
/* Mmap access is really useless fo this driver, but we
* support it because some pieces of software out there
* insist on using it */
SND_PCM_ACCESS_MMAP_INTERLEAVED
};
unsigned int format_list[] = {
SND_PCM_FORMAT_S16_LE
};
- int err, channels;
+ unsigned int rate_list[4];
+ unsigned int rate_count;
+ int err, min_channels, max_channels;
/* access type */
err = snd_pcm_ioplug_set_param_list(io, SND_PCM_IOPLUG_HW_ACCESS,
ARRAY_NELEMS(access_list), access_list);
if (err < 0)
return err;
@@ -871,139 +956,79 @@
err = snd_pcm_ioplug_set_param_list(io, SND_PCM_IOPLUG_HW_FORMAT,
ARRAY_NELEMS(format_list), format_list);
if (err < 0)
return err;
/* supported channels */
- channels = cfg.mode == CFG_MODE_MONO ? 1 : 2;
+ if (a2dp->sbc_capabilities.channel_mode & BT_A2DP_CHANNEL_MODE_MONO)
+ min_channels = 1;
+ else
+ min_channels = 2;
+
+ if (a2dp->sbc_capabilities.channel_mode & (~BT_A2DP_CHANNEL_MODE_MONO))
+ max_channels = 2;
+ else
+ max_channels = 1;
+
err = snd_pcm_ioplug_set_param_minmax(io, SND_PCM_IOPLUG_HW_CHANNELS,
- channels, channels);
+ min_channels, max_channels);
if (err < 0)
return err;
- /* supported rate */
- err = snd_pcm_ioplug_set_param_minmax(io, SND_PCM_IOPLUG_HW_RATE,
- cfg.rate, cfg.rate);
+ /* supported rates */
+ rate_count = 0;
+ if (a2dp->sbc_capabilities.frequency & BT_A2DP_SAMPLING_FREQ_16000) {
+ rate_list[rate_count] = 16000;
+ rate_count++;
+ }
+
+ if (a2dp->sbc_capabilities.frequency & BT_A2DP_SAMPLING_FREQ_32000) {
+ rate_list[rate_count] = 32000;
+ rate_count++;
+ }
+
+ if (a2dp->sbc_capabilities.frequency & BT_A2DP_SAMPLING_FREQ_44100) {
+ rate_list[rate_count] = 44100;
+ rate_count++;
+ }
+
+ if (a2dp->sbc_capabilities.frequency & BT_A2DP_SAMPLING_FREQ_48000) {
+ rate_list[rate_count] = 48000;
+ rate_count++;
+ }
+
+ err = snd_pcm_ioplug_set_param_list(io, SND_PCM_IOPLUG_HW_RATE,
+ rate_count, rate_list);
if (err < 0)
return err;
- /* supported block sizes:
- * - lower limit is A2DP codec size
- * - total buffer size is the upper limit (with two periods) */
- err = snd_pcm_ioplug_set_param_minmax(io,
- SND_PCM_IOPLUG_HW_PERIOD_BYTES,
- a2dp->codesize,
- MAX_BUFFER_SIZE / 2);
+ /* supported block size */
+ err = snd_pcm_ioplug_set_param_minmax(io, SND_PCM_IOPLUG_HW_PERIOD_BYTES,
+ 512, MAX_BUFFER_SIZE / 2);
if (err < 0)
return err;
/* supported buffer sizes */
err = snd_pcm_ioplug_set_param_minmax(io,
SND_PCM_IOPLUG_HW_BUFFER_BYTES,
MIN_BUFFER_SIZE,
MAX_BUFFER_SIZE);
if (err < 0)
return err;
- /* supported period count:
- * - derived from max buffer size and minimum period size */
- err = snd_pcm_ioplug_set_param_minmax(io, SND_PCM_IOPLUG_HW_PERIODS,
- 2, MAX_BUFFER_SIZE / a2dp->codesize);
- if (err < 0)
- return err;
-
return 0;
}
-static int bluetooth_recvmsg_fd(struct bluetooth_data *data)
-{
- char cmsg_b[CMSG_SPACE(sizeof(int))], m;
- int err, ret;
- struct iovec iov = { &m, sizeof(m) };
- struct msghdr msgh;
- struct cmsghdr *cmsg;
-
- memset(&msgh, 0, sizeof(msgh));
- msgh.msg_iov = &iov;
- msgh.msg_iovlen = 1;
- msgh.msg_control = &cmsg_b;
- msgh.msg_controllen = CMSG_LEN(sizeof(int));
-
- ret = recvmsg(data->server.fd, &msgh, 0);
- if (ret < 0) {
- err = errno;
- SNDERR("Unable to receive fd: %s (%d)", strerror(err), err);
- return -err;
- }
-
- /* Receive auxiliary data in msgh */
- for (cmsg = CMSG_FIRSTHDR(&msgh); cmsg != NULL;
- cmsg = CMSG_NXTHDR(&msgh, cmsg)) {
- if (cmsg->cmsg_level == SOL_SOCKET
- && cmsg->cmsg_type == SCM_RIGHTS) {
- data->stream.fd = (*(int *) CMSG_DATA(cmsg));
- DBG("stream_fd=%d", data->stream.fd);
- return 0;
- }
- }
-
- return -EINVAL;
-}
-
-static int bluetooth_a2dp_init(struct bluetooth_data *data,
- struct ipc_codec_sbc *sbc)
+static int bluetooth_parse_config(snd_config_t *conf,
+ struct bluetooth_alsa_config *bt_config)
{
- struct bluetooth_a2dp *a2dp = &data->a2dp;
- struct ipc_data_cfg *cfg = &data->cfg;
-
- if (cfg == NULL) {
- SNDERR("Error getting codec parameters");
- return -1;
- }
-
- if (cfg->codec != CFG_CODEC_SBC)
- return -1;
-
- /* FIXME: init using flags? */
- sbc_init(&a2dp->sbc, 0);
- a2dp->sbc.rate = cfg->rate;
- a2dp->sbc.channels = cfg->mode == CFG_MODE_MONO ? 1 : 2;
- if (cfg->mode == CFG_MODE_MONO || cfg->mode == CFG_MODE_JOINT_STEREO)
- a2dp->sbc.joint = 1;
- a2dp->sbc.allocation = sbc->allocation;
- a2dp->sbc.subbands = sbc->subbands;
- a2dp->sbc.blocks = sbc->blocks;
- a2dp->sbc.bitpool = sbc->bitpool;
- a2dp->codesize = a2dp->sbc.subbands * a2dp->sbc.blocks *
- a2dp->sbc.channels * 2;
- a2dp->count = sizeof(struct rtp_header) + sizeof(struct rtp_payload);
-
- DBG("\tallocation=%u\n\tsubbands=%u\n\tblocks=%u\n\tbitpool=%u\n",
- a2dp->sbc.allocation, a2dp->sbc.subbands, a2dp->sbc.blocks,
- a2dp->sbc.bitpool);
-
- return 0;
-}
-
-static int bluetooth_cfg_init(struct ipc_packet *pkt, snd_pcm_stream_t stream,
- snd_config_t *conf)
-{
- struct ipc_data_cfg *cfg = (void *) pkt->data;
- struct ipc_codec_sbc *sbc = (void *) cfg->data;
snd_config_iterator_t i, next;
const char *addr, *pref;
const char *mode, *allocation, *rate, *subbands, *blocks, *bitpool;
- switch (stream) {
- case SND_PCM_STREAM_PLAYBACK:
- cfg->fd_opt = CFG_FD_OPT_WRITE;
- break;
- case SND_PCM_STREAM_CAPTURE:
- cfg->fd_opt = CFG_FD_OPT_READ;
- break;
- }
+ memset(bt_config, 0, sizeof(struct bluetooth_alsa_config));
snd_config_for_each(i, next, conf) {
snd_config_t *n = snd_config_iterator_entry(i);
const char *id;
if (snd_config_get_id(n, &id) < 0)
@@ -1015,260 +1040,264 @@
if (strcmp(id, "device") == 0 || strcmp(id, "bdaddr") == 0) {
if (snd_config_get_string(n, &addr) < 0) {
SNDERR("Invalid type for %s", id);
return -EINVAL;
}
- strncpy(pkt->device, addr, 18);
+ bt_config->has_device = 1;
+ strncpy(bt_config->device, addr, 18);
continue;
}
if (strcmp(id, "profile") == 0) {
if (snd_config_get_string(n, &pref) < 0) {
SNDERR("Invalid type for %s", id);
return -EINVAL;
}
- if (strcmp(pref, "auto") == 0)
- pkt->role = PKT_ROLE_AUTO;
- else if (strcmp(pref, "voice") == 0 ||
+ if (strcmp(pref, "auto") == 0) {
+ bt_config->transport = BT_CAPABILITIES_TRANSPORT_ANY;
+ bt_config->has_transport = 1;
+ } else if (strcmp(pref, "voice") == 0 ||
strcmp(pref, "hfp") == 0) {
- pkt->role = PKT_ROLE_VOICE;
+ bt_config->transport = BT_CAPABILITIES_TRANSPORT_SCO;
+ bt_config->has_transport = 1;
} else if (strcmp(pref, "hifi") == 0 ||
- strcmp(pref, "a2dp") == 0)
- pkt->role = PKT_ROLE_HIFI;
+ strcmp(pref, "a2dp") == 0) {
+ bt_config->transport = BT_CAPABILITIES_TRANSPORT_A2DP;
+ bt_config->has_transport = 1;
+ }
continue;
}
if (strcmp(id, "rate") == 0) {
if (snd_config_get_string(n, &rate) < 0) {
SNDERR("Invalid type for %s", id);
return -EINVAL;
}
- cfg->rate = atoi(rate);
+ bt_config->rate = atoi(rate);
+ bt_config->has_rate = 1;
continue;
}
if (strcmp(id, "mode") == 0) {
if (snd_config_get_string(n, &mode) < 0) {
SNDERR("Invalid type for %s", id);
return -EINVAL;
}
- if (strcmp(pref, "auto") == 0)
- cfg->mode = CFG_MODE_AUTO;
- else if (strcmp(pref, "mono") == 0)
- cfg->mode = CFG_MODE_MONO;
- else if (strcmp(pref, "dual") == 0)
- cfg->mode = CFG_MODE_DUAL_CHANNEL;
- else if (strcmp(pref, "stereo") == 0)
- cfg->mode = CFG_MODE_STEREO;
- else if (strcmp(pref, "joint") == 0)
- cfg->mode = CFG_MODE_JOINT_STEREO;
+ if (strcmp(pref, "auto") == 0) {
+ bt_config->channel_mode = BT_A2DP_CHANNEL_MODE_MONO_AUTO;
+ bt_config->has_channel_mode = 1;
+ } else if (strcmp(pref, "mono") == 0) {
+ bt_config->channel_mode = BT_A2DP_CHANNEL_MODE_MONO;
+ bt_config->has_channel_mode = 1;
+ } else if (strcmp(pref, "dual") == 0) {
+ bt_config->channel_mode = BT_A2DP_CHANNEL_MODE_DUAL_CHANNEL;
+ bt_config->has_channel_mode = 1;
+ } else if (strcmp(pref, "stereo") == 0) {
+ bt_config->channel_mode = BT_A2DP_CHANNEL_MODE_STEREO;
+ bt_config->has_channel_mode = 1;
+ } else if (strcmp(pref, "joint") == 0) {
+ bt_config->channel_mode = BT_A2DP_CHANNEL_MODE_JOINT_STEREO;
+ bt_config->has_channel_mode = 1;
+ }
continue;
}
if (strcmp(id, "allocation") == 0) {
if (snd_config_get_string(n, &allocation) < 0) {
SNDERR("Invalid type for %s", id);
return -EINVAL;
}
- if (strcmp(pref, "auto") == 0)
- sbc->allocation = CFG_ALLOCATION_AUTO;
- else if (strcmp(pref, "loudness") == 0)
- sbc->allocation = CFG_ALLOCATION_LOUDNESS;
- else if (strcmp(pref, "snr") == 0)
- sbc->allocation = CFG_ALLOCATION_SNR;
+ if (strcmp(pref, "auto") == 0) {
+ bt_config->allocation_method = BT_A2DP_ALLOCATION_AUTO;
+ bt_config->has_allocation_method = 1;
+ } else if (strcmp(pref, "loudness") == 0) {
+ bt_config->allocation_method = BT_A2DP_ALLOCATION_LOUDNESS;
+ bt_config->has_allocation_method = 1;
+ } else if (strcmp(pref, "snr") == 0) {
+ bt_config->allocation_method = BT_A2DP_ALLOCATION_SNR;
+ bt_config->has_allocation_method = 1;
+ }
continue;
}
if (strcmp(id, "subbands") == 0) {
if (snd_config_get_string(n, &subbands) < 0) {
SNDERR("Invalid type for %s", id);
return -EINVAL;
}
- sbc->subbands = atoi(subbands);
+ bt_config->subbands = atoi(subbands);
+ bt_config->has_subbands = 1;
continue;
}
if (strcmp(id, "blocks") == 0) {
if (snd_config_get_string(n, &blocks) < 0) {
SNDERR("Invalid type for %s", id);
return -EINVAL;
}
- sbc->blocks = atoi(blocks);
+ bt_config->block_length = atoi(blocks);
+ bt_config->has_block_length = 1;
continue;
}
if (strcmp(id, "bitpool") == 0) {
if (snd_config_get_string(n, &bitpool) < 0) {
SNDERR("Invalid type for %s", id);
return -EINVAL;
}
- sbc->bitpool = atoi(bitpool);
+ bt_config->bitpool = atoi(bitpool);
+ bt_config->has_bitpool = 1;
continue;
}
SNDERR("Unknown field %s", id);
return -EINVAL;
}
- pkt->length = sizeof(*cfg) + sizeof(*sbc);
- pkt->type = PKT_TYPE_CFG_REQ;
- pkt->error = PKT_ERROR_NONE;
-
return 0;
}
-static int bluetooth_cfg(struct bluetooth_data *data, snd_pcm_stream_t stream,
- snd_config_t *conf)
+static int audioservice_send(int sk, const bt_audio_msg_header_t * msg)
{
- int ret, total;
- char buf[IPC_MTU];
- struct ipc_packet *pkt = (void *) buf;
- struct ipc_data_cfg *cfg = (void *) pkt->data;
- struct ipc_codec_sbc *sbc = (void *) cfg->data;
-
- DBG("Sending PKT_TYPE_CFG_REQ...");
-
- memset(buf, 0, sizeof(buf));
-
- ret = bluetooth_cfg_init(pkt, stream, conf);
- if (ret < 0)
- return -ret;
-
- ret = send(data->server.fd, pkt, sizeof(*pkt) + pkt->length, 0);
- if (ret < 0)
- return -errno;
- else if (ret == 0)
- return -EIO;
-
- DBG("OK - %d bytes sent. Waiting for response...", ret);
-
- memset(buf, 0, sizeof(buf));
-
- ret = recv(data->server.fd, buf, sizeof(*pkt) + sizeof(*cfg), 0);
- if (ret < 0)
- return -errno;
- else if (ret == 0)
- return -EIO;
-
- total = ret;
-
- if (pkt->type != PKT_TYPE_CFG_RSP) {
- SNDERR("Unexpected packet type %d received", pkt->type);
- return -EINVAL;
- }
-
- if (pkt->error != PKT_ERROR_NONE) {
- SNDERR("Error %d while configuring device", pkt->error);
- return -pkt->error;
- }
-
- if (cfg->codec != CFG_CODEC_SBC)
- goto done;
-
- ret = recv(data->server.fd, sbc, sizeof(*sbc), 0);
- if (ret < 0)
- return -errno;
- else if (ret == 0)
- return -EIO;
-
- total += ret;
-
-done:
- DBG("OK - %d bytes received", total);
-
- if (pkt->length != (total - sizeof(struct ipc_packet))) {
- SNDERR("Error while configuring device: packet size doesn't match");
- return -EINVAL;
+ int err;
+ DBG("sending %s", bt_audio_strmsg[msg->msg_type]);
+ if (send(sk, msg, BT_AUDIO_IPC_PACKET_SIZE, 0) > 0) {
+ err = 0;
+ } else {
+ err = -errno;
+ SNDERR("Error sending data to audio service: %s(%d)", strerror(errno), errno);
}
+ return err;
+}
- memcpy(&data->cfg, cfg, sizeof(*cfg));
-
- DBG("Device configuration:");
-
- DBG("\n\tfd=%d\n\tfd_opt=%u\n\tpkt_len=%u\n\tsample_size=%u\n\trate=%u",
- data->stream.fd, data->cfg.fd_opt, data->cfg.pkt_len,
- data->cfg.sample_size, data->cfg.rate);
-
- if (data->cfg.codec == CFG_CODEC_SBC) {
- ret = bluetooth_a2dp_init(data, sbc);
- if (ret < 0)
- return ret;
+static int audioservice_recv(int sk, bt_audio_msg_header_t * inmsg)
+{
+ int err;
+ DBG("trying to receive msg from audio service...");
+ if (recv(sk, inmsg, BT_AUDIO_IPC_PACKET_SIZE, 0) > 0) {
+ if (inmsg->msg_type <= BT_MSG_MAX) {
+ DBG("Received %s", bt_audio_strmsg[inmsg->msg_type]);
+ err = 0;
+ } else {
+ err = -EINVAL;
+ SNDERR("Bogus message type %d "
+ "received from audio service",
+ inmsg->msg_type);
+ }
+ } else {
+ err = -errno;
+ SNDERR("Error receiving data from audio service: %s(%d)",
+ strerror(errno), errno);
}
+ return err;
+}
- ret = bluetooth_recvmsg_fd(data);
- if (ret < 0)
- return ret;
-
- if (data->stream.fd == -1) {
- SNDERR("Error while configuring device: could not acquire audio socket");
- return -EINVAL;
+static int audioservice_expect(int sk, bt_audio_msg_header_t * outmsg,
+ int expected_type)
+{
+ int err = audioservice_recv(sk, outmsg);
+ if (err == 0) {
+ if (outmsg->msg_type != expected_type) {
+ err = -EINVAL;
+ SNDERR("Bogus message %s received while "
+ "%s was expected",
+ bt_audio_strmsg[outmsg->msg_type],
+ bt_audio_strmsg[expected_type]);
+ }
}
-
- /* It is possible there is some outstanding
- data in the pipe - we have to empty it */
- while (recv(data->stream.fd, data->buffer, data->cfg.pkt_len,
- MSG_DONTWAIT) > 0);
-
- memset(data->buffer, 0, sizeof(data->buffer));
-
- return 0;
+ return err;
}
static int bluetooth_init(struct bluetooth_data *data, snd_pcm_stream_t stream,
snd_config_t *conf)
{
int sk, err;
- struct sockaddr_un addr = {
- AF_UNIX, IPC_SOCKET_NAME
- };
-
- if (!data)
- return -EINVAL;
+ struct bluetooth_alsa_config *alsa_conf = &data->alsa_config;
+ char buf[BT_AUDIO_IPC_PACKET_SIZE];
+ struct bt_getcapabilities_req * getcaps_req = (void*) buf;
+ struct bt_getcapabilities_rsp * getcaps_rsp = (void*) buf;
memset(data, 0, sizeof(struct bluetooth_data));
+ err = bluetooth_parse_config(conf, alsa_conf);
+ if (err < 0)
+ return err;
+
data->server.fd = -1;
data->stream.fd = -1;
- sk = socket(PF_LOCAL, SOCK_STREAM, 0);
- if (sk < 0) {
- err = errno;
- SNDERR("Cannot open socket: %s (%d)", strerror(err), err);
- return -err;
- }
-
- DBG("Connecting to address: %s", addr.sun_path + 1);
- if (connect(sk, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
- err = errno;
- SNDERR("Connection fail", strerror(err), err);
- close(sk);
- return -err;
+ sk = bt_audio_service_open();
+ if(sk <= 0) {
+ err = -errno;
+ goto failed;
}
data->server.fd = sk;
data->server.events = POLLIN;
data->pipefd[0] = -1;
data->pipefd[1] = -1;
- if (pipe(data->pipefd) < 0)
- return -errno;
- if (fcntl(data->pipefd[0], F_SETFL, O_NONBLOCK) < 0)
- return -errno;
- if (fcntl(data->pipefd[1], F_SETFL, O_NONBLOCK) < 0)
- return -errno;
+ if (pipe(data->pipefd) < 0) {
+ err = -errno;
+ goto failed;
+ }
+ if (fcntl(data->pipefd[0], F_SETFL, O_NONBLOCK) < 0) {
+ err = -errno;
+ goto failed;
+ }
+ if (fcntl(data->pipefd[1], F_SETFL, O_NONBLOCK) < 0) {
+ err = -errno;
+ goto failed;
+ }
+
+ memset(getcaps_req, 0, BT_AUDIO_IPC_PACKET_SIZE);
+ getcaps_req->h.msg_type = BT_GETCAPABILITIES_REQ;
+ strncpy(getcaps_req->device, alsa_conf->device, 18);
+ if (alsa_conf->has_transport)
+ getcaps_req->transport = alsa_conf->transport;
+ else
+ getcaps_req->transport = BT_CAPABILITIES_TRANSPORT_ANY;
+
+ getcaps_req->access_mode = (stream == SND_PCM_STREAM_PLAYBACK ?
+ BT_CAPABILITIES_ACCESS_MODE_WRITE :
+ BT_CAPABILITIES_ACCESS_MODE_READ);
+
+ err = audioservice_send(data->server.fd, &getcaps_req->h);
+ if (err < 0)
+ goto failed;
+
+ err = audioservice_expect(data->server.fd, &getcaps_rsp->h, BT_GETCAPABILITIES_RSP);
+ if (err < 0)
+ goto failed;
+
+ if (getcaps_rsp->posix_errno != 0) {
+ SNDERR("BT_GETCAPABILITIES failed : %s(%d)",
+ strerror(getcaps_rsp->posix_errno),
+ getcaps_rsp->posix_errno);
+ return -getcaps_rsp->posix_errno;
+ }
+
+ data->transport = getcaps_rsp->transport;
+ data->link_mtu = getcaps_rsp->link_mtu;
+ if (getcaps_rsp->transport == BT_CAPABILITIES_TRANSPORT_A2DP)
+ data->a2dp.sbc_capabilities = getcaps_rsp->sbc_capabilities;
- return bluetooth_cfg(data, stream, conf);
+ return 0;
+
+failed:
+ bt_audio_service_close(sk);
+ return err;
}
SND_PCM_PLUGIN_DEFINE_FUNC(bluetooth)
{
struct bluetooth_data *data;
int err;
@@ -1288,26 +1317,26 @@
data->io.version = SND_PCM_IOPLUG_VERSION;
data->io.name = "Bluetooth Audio Device";
data->io.mmap_rw = 0; /* No direct mmap communication */
data->io.private_data = data;
- if (data->cfg.codec == CFG_CODEC_SBC)
+ if (data->transport == BT_CAPABILITIES_TRANSPORT_A2DP)
data->io.callback = stream == SND_PCM_STREAM_PLAYBACK ?
&bluetooth_a2dp_playback :
&bluetooth_a2dp_capture;
else
data->io.callback = stream == SND_PCM_STREAM_PLAYBACK ?
&bluetooth_hsp_playback :
&bluetooth_hsp_capture;
err = snd_pcm_ioplug_create(&data->io, name, stream, mode);
if (err < 0)
goto error;
- if (data->cfg.codec == CFG_CODEC_SBC)
+ if (data->transport == BT_CAPABILITIES_TRANSPORT_A2DP)
err = bluetooth_a2dp_hw_constraint(&data->io);
else
err = bluetooth_hsp_hw_constraint(&data->io);
if (err < 0) {
snd_pcm_ioplug_delete(&data->io);
Index: unix.c
===================================================================
--- unix.c (.../tags/20071019_1300/audio) (révision 144)
+++ unix.c (.../branches/20071019_1300/audio) (révision 144)
@@ -37,13 +37,13 @@
#include <bluetooth/sdp.h>
#include <dbus/dbus.h>
#include <glib.h>
#include "logging.h"
#include "dbus.h"
-#include "ipc.h"
+#include "btaudioservice.h"
#include "device.h"
#include "manager.h"
#include "avdtp.h"
#include "a2dp.h"
#include "headset.h"
#include "sink.h"
@@ -75,22 +75,28 @@
char *interface;
union {
struct a2dp_data a2dp;
struct headset_data hs;
} d;
int sock;
- int fd_opt;
+ int access_mode;
+ int data_fd; /* To be deleted once two phase configuration is fully implemented */
unsigned int req_id;
unsigned int cb_id;
gboolean (*cancel_stream) (struct device *dev, unsigned int id);
};
static GSList *clients = NULL;
static int unix_sock = -1;
+static void unix_ipc_sendmsg(struct unix_client *client,
+ const bt_audio_msg_header_t * msg);
+
+static void send_getcapabilities_rsp_error(struct unix_client *client, int err);
+
static void client_free(struct unix_client *client)
{
struct a2dp_data *a2dp;
switch (client->type) {
case TYPE_SINK:
@@ -189,126 +195,77 @@
break;
default:
break;
}
}
-static int unix_send_cfg(int sock, struct ipc_data_cfg *cfg, int fd)
-{
- char buf[IPC_MTU];
- struct ipc_packet *pkt = (void *) buf;
- int len, codec_len;
-
- memset(buf, 0, sizeof(buf));
-
- pkt->type = PKT_TYPE_CFG_RSP;
-
- if (!cfg) {
- pkt->error = EINVAL;
- len = send(sock, pkt, sizeof(struct ipc_packet), 0);
- if (len < 0)
- error("send: %s (%d)", strerror(errno), errno);
- return len;
- }
-
- debug("fd=%d, fd_opt=%u, pkt_len=%u, sample_size=%u, rate=%u",
- fd, cfg->fd_opt, cfg->pkt_len,
- cfg->sample_size, cfg->rate);
-
- if (cfg->codec == CFG_CODEC_SBC)
- codec_len = sizeof(struct ipc_codec_sbc);
- else
- codec_len = 0;
-
- pkt->error = PKT_ERROR_NONE;
- pkt->length = sizeof(struct ipc_data_cfg) + codec_len;
- memcpy(pkt->data, cfg, pkt->length);
-
- len = sizeof(struct ipc_packet) + pkt->length;
- len = send(sock, pkt, len, 0);
- if (len < 0)
- error("Error %s(%d)", strerror(errno), errno);
-
- debug("%d bytes sent", len);
-
- if (fd != -1) {
- len = unix_sendmsg_fd(sock, fd);
- if (len < 0)
- error("Error %s(%d)", strerror(errno), errno);
- debug("%d bytes sent", len);
- }
-
- return 0;
-}
-
static void headset_setup_complete(struct device *dev, void *user_data)
{
struct unix_client *client = user_data;
- struct ipc_data_cfg cfg;
+ char buf[BT_AUDIO_IPC_PACKET_SIZE];
+ struct bt_getcapabilities_rsp *rsp = (void *) buf;
struct headset_data *hs = &client->d.hs;
- int fd;
client->req_id = 0;
if (!dev) {
- unix_send_cfg(client->sock, NULL, -1);
+ send_getcapabilities_rsp_error(client, EIO);
client->dev = NULL;
return;
}
- switch (client->fd_opt) {
- case CFG_FD_OPT_READ:
+ switch (client->access_mode) {
+ case BT_CAPABILITIES_ACCESS_MODE_READ:
hs->lock = HEADSET_LOCK_READ;
break;
- case CFG_FD_OPT_WRITE:
+ case BT_CAPABILITIES_ACCESS_MODE_WRITE:
hs->lock = HEADSET_LOCK_WRITE;
break;
- case CFG_FD_OPT_READWRITE:
+ case BT_CAPABILITIES_ACCESS_MODE_READWRITE:
hs->lock = HEADSET_LOCK_READ | HEADSET_LOCK_WRITE;
break;
default:
hs->lock = 0;
break;
}
if (!headset_lock(dev, hs->lock)) {
error("Unable to lock headset");
- unix_send_cfg(client->sock, NULL, -1);
+ send_getcapabilities_rsp_error(client, EIO);
client->dev = NULL;
return;
}
- memset(&cfg, 0, sizeof(cfg));
-
- cfg.fd_opt = client->fd_opt;
- cfg.codec = CFG_CODEC_SCO;
- cfg.mode = CFG_MODE_MONO;
- cfg.pkt_len = 48;
- cfg.sample_size = 2;
- cfg.rate = 8000;
+ memset(buf, 0, sizeof(buf));
- fd = headset_get_sco_fd(dev);
+ rsp->h.msg_type = BT_GETCAPABILITIES_RSP;
+ rsp->transport = BT_CAPABILITIES_TRANSPORT_SCO;
+ rsp->access_mode = client->access_mode;
+ rsp->link_mtu = 48;
+ rsp->sampling_rate = 8000;
+
+ client->data_fd = headset_get_sco_fd(dev);
- unix_send_cfg(client->sock, &cfg, fd);
+ unix_ipc_sendmsg(client, &rsp->h);
}
static void a2dp_setup_complete(struct avdtp *session, struct a2dp_sep *sep,
struct avdtp_stream *stream,
void *user_data, struct avdtp_error *err)
{
struct unix_client *client = user_data;
- char buf[sizeof(struct ipc_data_cfg) + sizeof(struct ipc_codec_sbc)];
- struct ipc_data_cfg *cfg = (void *) buf;
+ char buf[BT_AUDIO_IPC_PACKET_SIZE];
+ struct bt_getcapabilities_rsp *rsp = (void *) buf;
struct avdtp_service_capability *cap;
struct avdtp_media_codec_capability *codec_cap;
struct sbc_codec_cap *sbc_cap;
- struct ipc_codec_sbc *sbc = (void *) cfg->data;
struct a2dp_data *a2dp = &client->d.a2dp;
- int fd;
GSList *caps;
+ memset(buf, 0, sizeof(buf));
+
client->req_id = 0;
if (!stream)
goto failed;
if (!a2dp_sep_lock(sep, session)) {
@@ -316,13 +273,13 @@
goto failed;
}
a2dp->sep = sep;
a2dp->stream = stream;
- if (!avdtp_stream_get_transport(stream, &fd, &cfg->pkt_len, &caps)) {
+ if (!avdtp_stream_get_transport(stream, &client->data_fd, &rsp->link_mtu, &caps)) {
error("Unable to get stream transport");
goto failed;
}
for (codec_cap = NULL; caps; caps = g_slist_next(caps)) {
cap = caps->data;
@@ -335,83 +292,45 @@
if (codec_cap == NULL ||
codec_cap->media_codec_type != A2DP_CODEC_SBC) {
error("Unable to find matching codec capability");
goto failed;
}
- cfg->fd_opt = CFG_FD_OPT_WRITE;
+ rsp->h.msg_type = BT_GETCAPABILITIES_RSP;
+ rsp->transport = BT_CAPABILITIES_TRANSPORT_A2DP;
+ client->access_mode = BT_CAPABILITIES_ACCESS_MODE_WRITE;
+ rsp->access_mode = client->access_mode;
+ /* rsp->link_mtu = already set (see above) */
sbc_cap = (void *) codec_cap;
- cfg->sample_size = 2;
- switch (sbc_cap->channel_mode) {
- case A2DP_CHANNEL_MODE_MONO:
- cfg->mode = CFG_MODE_MONO;
- break;
- case A2DP_CHANNEL_MODE_DUAL_CHANNEL:
- cfg->mode = CFG_MODE_DUAL_CHANNEL;
- break;
- case A2DP_CHANNEL_MODE_STEREO:
- cfg->mode = CFG_MODE_STEREO;
- break;
- case A2DP_CHANNEL_MODE_JOINT_STEREO:
- cfg->mode = CFG_MODE_JOINT_STEREO;
- break;
- }
+ /* assignations below are ok as soon as newipc.h and a2dp.h are kept in sync */
+ /* However it is not possible to cast a struct to another due to endianess issues */
+ rsp->sbc_capabilities.channel_mode = sbc_cap->channel_mode;
+ rsp->sbc_capabilities.frequency = sbc_cap->frequency;
+ rsp->sbc_capabilities.allocation_method = sbc_cap->allocation_method;
+ rsp->sbc_capabilities.subbands = sbc_cap->subbands;
+ rsp->sbc_capabilities.block_length = sbc_cap->block_length;
+ /* FIXME */
+ rsp->sbc_capabilities.min_bitpool = sbc_cap->max_bitpool;
+ rsp->sbc_capabilities.max_bitpool = sbc_cap->max_bitpool;
- switch (sbc_cap->frequency) {
- case A2DP_SAMPLING_FREQ_16000:
- cfg->rate = 16000;
- break;
- case A2DP_SAMPLING_FREQ_32000:
- cfg->rate = 32000;
- break;
- case A2DP_SAMPLING_FREQ_44100:
- cfg->rate = 44100;
- break;
- case A2DP_SAMPLING_FREQ_48000:
- cfg->rate = 48000;
- break;
- }
-
- cfg->codec = CFG_CODEC_SBC;
- sbc->allocation = sbc_cap->allocation_method == A2DP_ALLOCATION_SNR ?
- 0x01 : 0x00;
- sbc->subbands = sbc_cap->subbands == A2DP_SUBBANDS_4 ? 4 : 8;
-
- switch (sbc_cap->block_length) {
- case A2DP_BLOCK_LENGTH_4:
- sbc->blocks = 4;
- break;
- case A2DP_BLOCK_LENGTH_8:
- sbc->blocks = 8;
- break;
- case A2DP_BLOCK_LENGTH_12:
- sbc->blocks = 12;
- break;
- case A2DP_BLOCK_LENGTH_16:
- sbc->blocks = 16;
- break;
- }
-
- sbc->bitpool = sbc_cap->max_bitpool;
-
- unix_send_cfg(client->sock, cfg, fd);
+ unix_ipc_sendmsg(client, &rsp->h);
client->cb_id = avdtp_stream_add_cb(session, stream,
stream_state_changed, client);
return;
failed:
error("stream setup failed");
if (a2dp->sep) {
a2dp_sep_unlock(a2dp->sep, a2dp->session);
a2dp->sep = NULL;
}
- unix_send_cfg(client->sock, NULL, -1);
+ send_getcapabilities_rsp_error(client, EIO);
avdtp_unref(a2dp->session);
a2dp->session = NULL;
a2dp->stream = NULL;
}
@@ -462,149 +381,73 @@
client->req_id = id;
client->dev = dev;
return;
failed:
- unix_send_cfg(client->sock, NULL, -1);
+ send_getcapabilities_rsp_error(client, EIO);
}
static void create_cb(struct device *dev, void *user_data)
{
struct unix_client *client = user_data;
if (!dev)
- unix_send_cfg(client->sock, NULL, -1);
+ send_getcapabilities_rsp_error(client, EIO);
else
create_stream(dev, client);
}
-static int cfg_to_caps(struct ipc_data_cfg *cfg, struct sbc_codec_cap *sbc_cap)
+static void unix_ipc_sendmsg(struct unix_client *client,
+ const bt_audio_msg_header_t * msg)
{
- struct ipc_codec_sbc *sbc = (void *) cfg->data;
-
- memset(sbc_cap, 0, sizeof(struct sbc_codec_cap));
-
- sbc_cap->cap.media_type = AVDTP_MEDIA_TYPE_AUDIO;
- sbc_cap->cap.media_codec_type = A2DP_CODEC_SBC;
-
- switch (cfg->rate) {
- case 48000:
- sbc_cap->frequency = A2DP_SAMPLING_FREQ_48000;
- break;
- case 44100:
- sbc_cap->frequency = A2DP_SAMPLING_FREQ_44100;
- break;
- case 32000:
- sbc_cap->frequency = A2DP_SAMPLING_FREQ_32000;
- break;
- case 16000:
- sbc_cap->frequency = A2DP_SAMPLING_FREQ_16000;
- break;
- default:
- sbc_cap->frequency = A2DP_SAMPLING_FREQ_44100;
- break;
- }
-
- switch (cfg->mode) {
- case CFG_MODE_MONO:
- sbc_cap->channel_mode = A2DP_CHANNEL_MODE_MONO;
- break;
- case CFG_MODE_DUAL_CHANNEL:
- sbc_cap->channel_mode = A2DP_CHANNEL_MODE_DUAL_CHANNEL;
- break;
- case CFG_MODE_STEREO:
- sbc_cap->channel_mode = A2DP_CHANNEL_MODE_STEREO;
- break;
- case CFG_MODE_JOINT_STEREO:
- sbc_cap->channel_mode = A2DP_CHANNEL_MODE_JOINT_STEREO;
- break;
- default:
- sbc_cap->channel_mode = A2DP_CHANNEL_MODE_JOINT_STEREO;
- break;
- }
-
- switch (sbc->allocation) {
- case CFG_ALLOCATION_LOUDNESS:
- sbc_cap->allocation_method = A2DP_ALLOCATION_LOUDNESS;
- break;
- case CFG_ALLOCATION_SNR:
- sbc_cap->allocation_method = A2DP_ALLOCATION_LOUDNESS;
- break;
- default:
- sbc_cap->allocation_method = A2DP_ALLOCATION_LOUDNESS;
- break;
- }
-
- switch (sbc->subbands) {
- case 8:
- sbc_cap->subbands = A2DP_SUBBANDS_8;
- break;
- case 4:
- sbc_cap->subbands = A2DP_SUBBANDS_4;
- break;
- default:
- sbc_cap->subbands = A2DP_SUBBANDS_8;
- break;
- }
-
- switch (sbc->blocks) {
- case 16:
- sbc_cap->block_length = A2DP_BLOCK_LENGTH_16;
- break;
- case 12:
- sbc_cap->block_length = A2DP_BLOCK_LENGTH_12;
- break;
- case 8:
- sbc_cap->block_length = A2DP_BLOCK_LENGTH_8;
- break;
- case 4:
- sbc_cap->block_length = A2DP_BLOCK_LENGTH_4;
- break;
- default:
- sbc_cap->block_length = A2DP_BLOCK_LENGTH_16;
- break;
+ info("Audio API: sending %s", bt_audio_strmsg[msg->msg_type]);
+ if (send(client->sock, msg, BT_AUDIO_IPC_PACKET_SIZE, 0) < 0) {
+ error("Error %s(%d)", strerror(errno), errno);
}
+}
- if (sbc->bitpool != 0) {
- if (sbc->bitpool > 250)
- return -EINVAL;
-
- sbc_cap->min_bitpool = sbc->bitpool;
- sbc_cap->max_bitpool = sbc->bitpool;
- }
+static void send_getcapabilities_rsp_error(struct unix_client *client, int err)
+{
+ char buf[BT_AUDIO_IPC_PACKET_SIZE];
+ struct bt_getcapabilities_rsp *rsp = (void *) buf;
+
+ memset(buf, 0, sizeof(buf));
+ rsp->h.msg_type = BT_GETCAPABILITIES_RSP;
+ rsp->posix_errno = err;
- return 0;
+ unix_ipc_sendmsg(client, &rsp->h);
}
+
-static void cfg_event(struct unix_client *client, struct ipc_packet *pkt, int len)
+static void handle_getcapabilities_req(struct unix_client *client,
+ struct bt_getcapabilities_req * req)
{
struct device *dev;
bdaddr_t bdaddr;
- struct ipc_data_cfg *cfg = (void *) pkt->data;
- struct sbc_codec_cap sbc_cap;
- str2ba(pkt->device, &bdaddr);
+ str2ba(req->device, &bdaddr);
- client->fd_opt = cfg->fd_opt;
+ if (!req->access_mode) {
+ send_getcapabilities_rsp_error(client, EINVAL);
+ return;
+ }
+
+ client->access_mode = req->access_mode;
if (client->interface) {
g_free(client->interface);
client->interface = NULL;
}
- if (pkt->role == PKT_ROLE_VOICE)
+ if (req->transport == BT_CAPABILITIES_TRANSPORT_SCO)
client->interface = g_strdup(AUDIO_HEADSET_INTERFACE);
- else if (pkt->role == PKT_ROLE_HIFI)
+ else if (req->transport == BT_CAPABILITIES_TRANSPORT_A2DP)
client->interface = g_strdup(AUDIO_SINK_INTERFACE);
- if (cfg_to_caps(cfg, &sbc_cap) < 0)
- goto failed;
-
- client->media_codec = avdtp_service_cap_new(AVDTP_MEDIA_CODEC,
- &sbc_cap, sizeof(sbc_cap));
+ client->media_codec = 0;
if (!manager_find_device(&bdaddr, NULL, FALSE)) {
if (!bacmp(&bdaddr, BDADDR_ANY))
goto failed;
if (!manager_create_device(&bdaddr, create_cb, client))
goto failed;
@@ -620,63 +463,86 @@
create_stream(dev, client);
return;
failed:
- unix_send_cfg(client->sock, NULL, -1);
+ send_getcapabilities_rsp_error(client, EIO);
}
-static void ctl_event(struct unix_client *client,
- struct ipc_packet *pkt, int len)
+static void handle_setconfiguration_req(struct unix_client *client,
+ struct bt_setconfiguration_req * req)
{
+ /* FIXME: for now we just blindly assume that we receive is the
+ only valid configuration sent.*/
+ char buf[BT_AUDIO_IPC_PACKET_SIZE];
+ struct bt_setconfiguration_rsp *rsp = (void *) buf;
+
+ memset(buf, 0, sizeof(buf));
+ rsp->h.msg_type = BT_SETCONFIGURATION_RSP;
+ rsp->posix_errno = 0;
+
+ unix_ipc_sendmsg(client, &rsp->h);
}
-static int reply_state(int sock, struct ipc_packet *pkt)
+static void handle_streamstart_req(struct unix_client *client,
+ struct bt_streamstart_req * req)
{
- struct ipc_data_state *state = (struct ipc_data_state *) pkt->data;
- int len;
+ /* FIXME : to be really implemented */
+ char buf[BT_AUDIO_IPC_PACKET_SIZE];
+ struct bt_streamstart_rsp *rsp = (void *) buf;
+ struct bt_datafd_ind *ind = (void *) buf;
+
+ memset(buf, 0, sizeof(buf));
+ rsp->h.msg_type = BT_STREAMSTART_RSP;
+ rsp->posix_errno = 0;
+ unix_ipc_sendmsg(client, &rsp->h);
+
+ memset(buf, 0, sizeof(buf));
+ ind->h.msg_type = BT_STREAMFD_IND;
+ unix_ipc_sendmsg(client, &ind->h);
- info("status=%u", state->state);
+ if (unix_sendmsg_fd(client->sock, client->data_fd) < 0)
+ error("unix_sendmsg_fd: %s(%d)", strerror(errno), errno);
- pkt->type = PKT_TYPE_STATE_RSP;
- pkt->length = sizeof(struct ipc_data_state);
- pkt->error = PKT_ERROR_NONE;
-
- len = sizeof(struct ipc_packet) + sizeof(struct ipc_data_state);
- len = send(sock, pkt, len, 0);
- if (len < 0)
- error("Error %s(%d)", strerror(errno), errno);
+}
- debug("%d bytes sent", len);
+static void handle_streamstop_req(struct unix_client *client,
+ struct bt_streamstop_req * req)
+{
+ /* FIXME : to be implemented */
+ char buf[BT_AUDIO_IPC_PACKET_SIZE];
+ struct bt_streamstop_rsp *rsp = (void *) buf;
+
+ memset(buf, 0, sizeof(buf));
+ rsp->h.msg_type = BT_STREAMSTOP_RSP;
+ rsp->posix_errno = 0;
- return 0;
+ unix_ipc_sendmsg(client, &rsp->h);
}
-static void state_event(struct unix_client *client,
- struct ipc_packet *pkt, int len)
+static void handle_control_req(struct unix_client *client,
+ struct bt_control_req * req)
{
-#if 0
- struct ipc_data_state *state = (struct ipc_data_state *) pkt->data;
- struct device *dev = client->dev;
-
- if (len > sizeof(struct ipc_packet))
- device_set_state(dev, state->state);
- else
- state->state = device_get_state(dev);
-#endif
+ /* FIXME: really implement that */
+ char buf[BT_AUDIO_IPC_PACKET_SIZE];
+ struct bt_setconfiguration_rsp *rsp = (void *) buf;
+
+ memset(buf, 0, sizeof(buf));
+ rsp->h.msg_type = BT_CONTROL_RSP;
+ rsp->posix_errno = 0;
- reply_state(client->sock, pkt);
+ unix_ipc_sendmsg(client, &rsp->h);
}
static gboolean client_cb(GIOChannel *chan, GIOCondition cond, gpointer data)
{
- char buf[IPC_MTU];
- struct ipc_packet *pkt = (void *) buf;
+ char buf[BT_AUDIO_IPC_PACKET_SIZE];
+ bt_audio_msg_header_t *msghdr = (void *) buf;
struct unix_client *client = data;
- int len, len_check;
+ int len;
struct a2dp_data *a2dp = &client->d.a2dp;
struct headset_data *hs = &client->d.hs;
if (cond & G_IO_NVAL)
return FALSE;
@@ -702,37 +568,45 @@
client->cancel_stream(client->dev, client->req_id);
goto failed;
}
memset(buf, 0, sizeof(buf));
- len = recv(client->sock, buf, sizeof(buf), 0);
+ len = recv(client->sock, buf, sizeof(buf), MSG_WAITALL);
if (len < 0) {
error("recv: %s (%d)", strerror(errno), errno);
goto failed;
}
- len_check = pkt->length + sizeof(struct ipc_packet);
- if (len != len_check) {
- error("Packet lenght doesn't match");
- goto failed;
+ if (msghdr->msg_type <= BT_MSG_MAX) {
+ info("Audio API: received %s", bt_audio_strmsg[msghdr->msg_type]);
}
- switch (pkt->type) {
- case PKT_TYPE_CFG_REQ:
- info("Package PKT_TYPE_CFG_REQ:%u", pkt->role);
- cfg_event(client, pkt, len);
- break;
- case PKT_TYPE_STATE_REQ:
- info("Package PKT_TYPE_STATE_REQ");
- state_event(client, pkt, len);
- break;
- case PKT_TYPE_CTL_REQ:
- info("Package PKT_TYPE_CTL_REQ");
- ctl_event(client, pkt, len);
+ switch (msghdr->msg_type) {
+ case BT_GETCAPABILITIES_REQ:
+ handle_getcapabilities_req(client,
+ (struct bt_getcapabilities_req *) msghdr);
+ break;
+ case BT_SETCONFIGURATION_REQ:
+ handle_setconfiguration_req(client,
+ (struct bt_setconfiguration_req *) msghdr);
+ break;
+ case BT_STREAMSTART_REQ:
+ handle_streamstart_req(client,
+ (struct bt_streamstart_req *) msghdr);
+ break;
+ case BT_STREAMSTOP_REQ:
+ handle_streamstop_req(client,
+ (struct bt_streamstop_req *) msghdr);
+ break;
+ case BT_CONTROL_REQ:
+ handle_control_req(client,
+ (struct bt_control_req *) msghdr);
break;
+ default:
+ error("Audio API: received unexpected packet type %d", msghdr->msg_type);
}
return TRUE;
failed:
clients = g_slist_remove(clients, client);
@@ -782,13 +656,13 @@
}
int unix_init(void)
{
GIOChannel *io;
struct sockaddr_un addr = {
- AF_UNIX, IPC_SOCKET_NAME
+ AF_UNIX, BT_IPC_SOCKET_NAME
};
int sk, err;
sk = socket(PF_LOCAL, SOCK_STREAM, 0);
if (sk < 0) {
Index: ctl_bluetooth.c
===================================================================
--- ctl_bluetooth.c (.../tags/20071019_1300/audio) (révision 144)
+++ ctl_bluetooth.c (.../branches/20071019_1300/audio) (révision 144)
@@ -30,13 +30,13 @@
#include <alsa/asoundlib.h>
#include <alsa/control_external.h>
#include <bluetooth/bluetooth.h>
-#include "ipc.h"
+#include "btaudioservice.h"
#ifdef ENABLE_DEBUG
#define DBG(fmt, arg...) printf("DEBUG: %s: " fmt "\n" , __FUNCTION__ , ## arg)
#else
#define DBG(fmt, arg...)
#endif
@@ -62,13 +62,13 @@
static void bluetooth_exit(struct bluetooth_data *data)
{
if (data == NULL)
return;
if (data->sock >= 0)
- close(data->sock);
+ bt_audio_service_close(data->sock);
free(data);
}
static void bluetooth_close(snd_ctl_ext_t *ext)
{
@@ -138,140 +138,135 @@
*imax = BLUETOOTH_MAXVOL;
return 0;
}
static int bluetooth_send_ctl(struct bluetooth_data *data,
- struct ipc_packet *pkt, int len)
+ uint8_t mode, uint8_t key, struct bt_control_rsp *ctl_rsp)
{
int ret;
+ struct bt_control_req * ctl_req = (void *) ctl_rsp;
- ret = send(data->sock, pkt, len, MSG_NOSIGNAL);
+ memset(ctl_req, 0, BT_AUDIO_IPC_PACKET_SIZE);
+ ctl_req->h.msg_type = BT_CONTROL_REQ;
+ ctl_req->mode = mode;
+ ctl_req->key = key;
+
+ ret = send(data->sock, ctl_req, BT_AUDIO_IPC_PACKET_SIZE, MSG_NOSIGNAL);
if (ret <= 0) {
SYSERR("Unable to request new volume value to server");
return -errno;
}
- ret = recv(data->sock, pkt, len, 0);
+ ret = recv(data->sock, ctl_rsp, BT_AUDIO_IPC_PACKET_SIZE, 0);
if (ret <= 0) {
- SYSERR("Unable to receive new volume value from server");
+ SNDERR("Unable to receive new volume value from server");
return -errno;
}
- if(pkt->type != PKT_TYPE_CTL_RSP) {
- SNDERR("Unexpected packet type %d received", pkt->type);
+ if (ctl_rsp->h.msg_type > BT_MSG_MAX) {
+ SNDERR("Bogus message type %d "
+ "received from audio service",
+ ctl_rsp->h.msg_type);
return -EINVAL;
}
- if(pkt->length != sizeof(struct ipc_data_ctl)) {
- SNDERR("Unexpected packet length %d received", pkt->length);
+ if (ctl_rsp->h.msg_type != BT_CONTROL_RSP) {
+ SNDERR("Unexpected message %s received",
+ bt_audio_strmsg[ctl_rsp->h.msg_type]);
return -EINVAL;
}
+ if (ctl_rsp->posix_errno != 0) {
+ SNDERR("BT_CONTROL failed : %s (%d)",
+ strerror(ctl_rsp->posix_errno),
+ ctl_rsp->posix_errno);
+ return -ctl_rsp->posix_errno;
+ }
+
return 0;
}
static int bluetooth_read_integer(snd_ctl_ext_t *ext, snd_ctl_ext_key_t key,
long *value)
{
struct bluetooth_data *data = ext->private_data;
- struct ipc_packet *pkt;
- struct ipc_data_ctl *ctl;
- int len, ret;
+ int ret;
+ char buf[BT_AUDIO_IPC_PACKET_SIZE];
+ struct bt_control_rsp *rsp = (void *) buf;
DBG("ext %p key %ld", ext, key);
- len = sizeof(struct ipc_packet) + sizeof(struct ipc_data_ctl);
- pkt = malloc(len);
- memset(pkt, 0, len);
+ memset(buf, 0, sizeof(buf));
*value = 0;
- pkt->type = PKT_TYPE_CTL_REQ;
- pkt->length = sizeof(struct ipc_data_ctl);
- ctl = (struct ipc_data_ctl *) pkt->data;
- ctl->mode = key;
-
- if ((ret = bluetooth_send_ctl(data, pkt, len)) < 0)
+ if ((ret = bluetooth_send_ctl(data, key, 0, rsp)) < 0)
goto done;
- *value = ctl->key;
+ *value = rsp->key;
done:
- free(pkt);
return ret;
}
static int bluetooth_write_integer(snd_ctl_ext_t *ext, snd_ctl_ext_key_t key,
long *value)
{
struct bluetooth_data *data = ext->private_data;
- struct ipc_packet *pkt;
- struct ipc_data_ctl *ctl;
+ char buf[BT_AUDIO_IPC_PACKET_SIZE];
+ struct bt_control_rsp *rsp = (void *) buf;
long current;
- int len, ret;
+ int ret, keyvalue;
DBG("ext %p key %ld", ext, key);
if ((ret = bluetooth_read_integer(ext, key, ¤t)) < 0)
return ret;
if (*value == current)
return 0;
- len = sizeof(struct ipc_packet) + sizeof(struct ipc_data_ctl);
- pkt = malloc(len);
- memset(pkt, 0, len);
-
- pkt->length = sizeof(struct ipc_data_ctl);
- ctl = (struct ipc_data_ctl *) pkt->data;
- ctl->mode = key;
-
while (*value != current) {
- pkt->type = PKT_TYPE_CTL_REQ;
- ctl->key = (*value > current) ? CTL_KEY_VOL_UP : CTL_KEY_VOL_DOWN;
+ keyvalue = (*value > current) ? BT_CONTROL_KEY_VOL_UP : BT_CONTROL_KEY_VOL_DOWN;
- if ((ret = bluetooth_send_ctl(data, pkt, len)) < 0)
+ if ((ret = bluetooth_send_ctl(data, key, keyvalue, rsp)) < 0)
break;
- current = ctl->key;
+ current = keyvalue;
}
- free(pkt);
return ret;
}
static int bluetooth_read_event(snd_ctl_ext_t *ext, snd_ctl_elem_id_t *id,
unsigned int *event_mask)
{
struct bluetooth_data *data = ext->private_data;
- struct ipc_packet *pkt;
- struct ipc_data_ctl *ctl;
- int len, ret;
+ char buf[BT_AUDIO_IPC_PACKET_SIZE];
+ struct bt_control_ind *ind = (void *) buf;
+ int ret;
DBG("ext %p id %p", ext, id);
- len = sizeof(struct ipc_packet) + sizeof(struct ipc_data_ctl);
- pkt = malloc(len);
- memset(pkt, 0, len);
-
- ret = recv(data->sock, pkt, len, MSG_DONTWAIT);
- if (ret <= 0)
- return -errno;
+ memset(buf, 0, sizeof(buf));
- if(pkt->type != PKT_TYPE_CTL_NTFY) {
- SNDERR("Unexpected packet type %d received!", pkt->type);
+ ret = recv(data->sock, ind, BT_AUDIO_IPC_PACKET_SIZE, MSG_DONTWAIT);
+ if (ind->h.msg_type > BT_MSG_MAX) {
+ SNDERR("Bogus message type %d "
+ "received from audio service",
+ ind->h.msg_type);
return -EAGAIN;
}
- if(pkt->length != sizeof(struct ipc_data_ctl)) {
- SNDERR("Unexpected packet length %d received", pkt->length);
+ if (ind->h.msg_type != BT_CONTROL_IND) {
+ SNDERR("Unexpected message %s received",
+ bt_audio_strmsg[ind->h.msg_type]);
return -EAGAIN;
}
- ctl = (struct ipc_data_ctl *) pkt->data;
snd_ctl_elem_id_set_interface(id, SND_CTL_ELEM_IFACE_MIXER);
- snd_ctl_elem_id_set_name(id, ctl->mode == BLUETOOTH_PLAYBACK ?
+ snd_ctl_elem_id_set_name(id, ind->mode == BLUETOOTH_PLAYBACK ?
vol_devices[BLUETOOTH_PLAYBACK] :
vol_devices[BLUETOOTH_CAPTURE]);
*event_mask = SND_CTL_EVENT_MASK_VALUE;
return 1;
}
@@ -287,40 +282,25 @@
.write_integer = bluetooth_write_integer,
.read_event = bluetooth_read_event,
};
static int bluetooth_init(struct bluetooth_data *data)
{
- int sk, err, id;
- struct sockaddr_un addr = {
- AF_UNIX, IPC_SOCKET_NAME
- };
+ int sk;
if (!data)
return -EINVAL;
memset(data, 0, sizeof(struct bluetooth_data));
data->sock = -1;
- id = abs(getpid() * rand());
-
- if ((sk = socket(PF_LOCAL, SOCK_STREAM, 0)) < 0) {
- err = -errno;
- SNDERR("Can't open socket");
+ if ((sk = bt_audio_service_open()) < 0) {
return -errno;
}
- DBG("Connecting to address: %s", addr.sun_path + 1);
- if (connect(sk, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
- err = -errno;
- SNDERR("Can't connect socket");
- close(sk);
- return err;
- }
-
data->sock = sk;
return 0;
}
SND_CTL_PLUGIN_DEFINE_FUNC(bluetooth)
Index: btaudioservice.c
===================================================================
--- btaudioservice.c (.../tags/20071019_1300/audio) (révision 0)
+++ btaudioservice.c (.../branches/20071019_1300/audio) (révision 144)
@@ -0,0 +1,91 @@
+/*
+ *
+ * BlueZ - Bluetooth protocol stack for Linux
+ *
+ * Copyright (C) 2004-2007 Marcel Holtmann <[email protected]>
+ *
+ * This library 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 2.1 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ */
+
+#include <btaudioservice.h>
+
+int bt_audio_service_open()
+{
+ int sk;
+ int err;
+ struct sockaddr_un addr = {
+ AF_UNIX, BT_IPC_SOCKET_NAME
+ };
+
+ sk = socket(PF_LOCAL, SOCK_STREAM, 0);
+ if (sk < 0) {
+ err = errno;
+ fprintf(stderr, "%s: Cannot open socket: %s (%d)\n", __FUNCTION__, strerror(err), err);
+ errno = err;
+ return -1;
+ }
+
+ if (connect(sk, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
+ err = errno;
+ fprintf(stderr, "%s: connect() failed: %s (%d)\n", __FUNCTION__, strerror(err), err);
+ close(sk);
+ errno = err;
+ return -1;
+ }
+
+ return sk;
+}
+
+int bt_audio_service_close(int sk)
+{
+ return close(sk);
+}
+
+int bt_audio_service_get_data_fd(int sk)
+{
+ char cmsg_b[CMSG_SPACE(sizeof(int))], m;
+ int err, ret;
+ struct iovec iov = { &m, sizeof(m) };
+ struct msghdr msgh;
+ struct cmsghdr *cmsg;
+
+ memset(&msgh, 0, sizeof(msgh));
+ msgh.msg_iov = &iov;
+ msgh.msg_iovlen = 1;
+ msgh.msg_control = &cmsg_b;
+ msgh.msg_controllen = CMSG_LEN(sizeof(int));
+
+ ret = recvmsg(sk, &msgh, 0);
+ if (ret < 0) {
+ err = errno;
+ fprintf(stderr, "%s: Unable to receive fd: %s (%d)\n", __FUNCTION__, strerror(err), err);
+ errno = err;
+ return -1;
+ }
+
+ /* Receive auxiliary data in msgh */
+ for (cmsg = CMSG_FIRSTHDR(&msgh); cmsg != NULL;
+ cmsg = CMSG_NXTHDR(&msgh, cmsg)) {
+ if (cmsg->cmsg_level == SOL_SOCKET
+ && cmsg->cmsg_type == SCM_RIGHTS) {
+ return (*(int *) CMSG_DATA(cmsg));
+ }
+ }
+
+ errno = EINVAL;
+ return -1;
+}
+
Index: btaudioservice.h
===================================================================
--- btaudioservice.h (.../tags/20071019_1300/audio) (révision 0)
+++ btaudioservice.h (.../branches/20071019_1300/audio) (révision 144)
@@ -0,0 +1,304 @@
+/*
+ *
+ * BlueZ - Bluetooth protocol stack for Linux
+ *
+ * Copyright (C) 2004-2007 Marcel Holtmann <[email protected]>
+ *
+ * This library 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 2.1 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ */
+
+/*
+ Message sequence chart of streaming sequence for A2DP transport
+
+ Audio daemon User
+ on snd_pcm_open
+ <--BT_GETCAPABILITIES_REQ
+
+ BT_GETCAPABILITIES_RSP-->
+
+ on snd_pcm_hw_params
+ <--BT_SETCONFIGURATION_REQ
+
+ BT_SETCONFIGURATION_RSP-->
+
+ on snd_pcm_prepare
+ <--BT_STREAMSTART_REQ
+
+ <Moves to streaming state>
+ BT_STREAMSTART_RSP-->
+
+ BT_STREAMFD_IND -->
+
+ < streams data >
+ ..........
+
+ on snd_pcm_drop/snd_pcm_drain
+
+ <--BT_STREAMSTOP_REQ
+
+ <Moves to open state>
+ BT_STREAMSTOP_RSP-->
+
+ on IPC close or appl crash
+ <Moves to idle>
+
+ */
+
+#ifndef BTAUDIOSERVICE_H
+#define BTAUDIOSERVICE_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stdint.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+#include <errno.h>
+
+#define BT_AUDIO_IPC_PACKET_SIZE 128
+#define BT_IPC_SOCKET_NAME "\0/org/bluez/audio"
+
+/* Generic message header definition */
+typedef struct {
+ uint8_t msg_type;
+} __attribute__ ((packed)) bt_audio_msg_header_t;
+
+/* Messages list */
+#define BT_GETCAPABILITIES_REQ 0
+#define BT_GETCAPABILITIES_RSP 1
+
+#define BT_SETCONFIGURATION_REQ 2
+#define BT_SETCONFIGURATION_RSP 3
+
+#define BT_STREAMSTART_REQ 4
+#define BT_STREAMSTART_RSP 5
+
+#define BT_STREAMSTOP_REQ 6
+#define BT_STREAMSTOP_RSP 7
+
+#define BT_STREAMSUSPEND_IND 8
+#define BT_STREAMRESUME_IND 9
+
+#define BT_CONTROL_REQ 10
+#define BT_CONTROL_RSP 11
+#define BT_CONTROL_IND 12
+
+#define BT_STREAMFD_IND 13
+
+/* This table contains the string representation for messages above */
+static const char * bt_audio_strmsg[] = {
+ "BT_GETCAPABILITIES_REQ",
+ "BT_GETCAPABILITIES_RSP",
+ "BT_SETCONFIGURATION_REQ",
+ "BT_SETCONFIGURATION_RSP",
+ "BT_STREAMSTART_REQ",
+ "BT_STREAMSTART_RSP",
+ "BT_STREAMSTOP_REQ",
+ "BT_STREAMSTOP_RSP",
+ "BT_STREAMSUSPEND_IND",
+ "BT_STREAMRESUME_IND",
+ "BT_CONTROL_REQ",
+ "BT_CONTROL_RSP",
+ "BT_CONTROL_IND",
+ "BT_STREAMFD_IND",
+};
+
+#define BT_MSG_MAX ((sizeof(bt_audio_strmsg) / sizeof(char*)) -1)
+
+/* BT_GETCAPABILITIES_REQ */
+
+#define BT_CAPABILITIES_TRANSPORT_A2DP 0
+#define BT_CAPABILITIES_TRANSPORT_SCO 1
+#define BT_CAPABILITIES_TRANSPORT_ANY 2
+
+#define BT_CAPABILITIES_ACCESS_MODE_READ 1
+#define BT_CAPABILITIES_ACCESS_MODE_WRITE 2
+#define BT_CAPABILITIES_ACCESS_MODE_READWRITE 3
+
+struct bt_getcapabilities_req {
+ bt_audio_msg_header_t h;
+ char device[18]; /* Address of the remote Device */
+ uint8_t transport; /* Requested transport */
+ uint8_t access_mode; /* Requested access mode */
+} __attribute__ ((packed));
+
+/* BT_GETCAPABILITIES_RSP */
+
+/**
+ * SBC Codec parameters as per A2DP profile 1.0 § 4.3
+ */
+
+#define BT_A2DP_SAMPLING_FREQ_16000 (1 << 3)
+#define BT_A2DP_SAMPLING_FREQ_32000 (1 << 2)
+#define BT_A2DP_SAMPLING_FREQ_44100 (1 << 1)
+#define BT_A2DP_SAMPLING_FREQ_48000 1
+
+#define BT_A2DP_CHANNEL_MODE_MONO (1 << 3)
+#define BT_A2DP_CHANNEL_MODE_DUAL_CHANNEL (1 << 2)
+#define BT_A2DP_CHANNEL_MODE_STEREO (1 << 1)
+#define BT_A2DP_CHANNEL_MODE_JOINT_STEREO 1
+#define BT_A2DP_CHANNEL_MODE_MONO_AUTO 0
+
+#define BT_A2DP_BLOCK_LENGTH_4 (1 << 3)
+#define BT_A2DP_BLOCK_LENGTH_8 (1 << 2)
+#define BT_A2DP_BLOCK_LENGTH_12 (1 << 1)
+#define BT_A2DP_BLOCK_LENGTH_16 1
+
+#define BT_A2DP_SUBBANDS_4 (1 << 1)
+#define BT_A2DP_SUBBANDS_8 1
+
+#define BT_A2DP_ALLOCATION_SNR (1 << 1)
+#define BT_A2DP_ALLOCATION_LOUDNESS 1
+#define BT_A2DP_ALLOCATION_AUTO 0
+
+typedef struct {
+ uint8_t channel_mode;
+ uint8_t frequency;
+ uint8_t allocation_method;
+ uint8_t subbands;
+ uint8_t block_length;
+ uint8_t min_bitpool;
+ uint8_t max_bitpool;
+} __attribute__ ((packed)) SBC_capabilities_t;
+
+/* To be defined */
+typedef struct {
+} __attribute__ ((packed)) MPEG_capabilities_t;
+
+struct bt_getcapabilities_rsp {
+ bt_audio_msg_header_t h;
+ uint8_t posix_errno;
+ uint8_t transport; /* Granted transport */
+ uint8_t access_mode; /* Granted access mode */
+ uint16_t link_mtu; /* Max length that transport supports */
+ SBC_capabilities_t sbc_capabilities; /* A2DP only */
+ MPEG_capabilities_t mpeg_capabilities; /* A2DP only */
+ uint16_t sampling_rate; /* SCO only */
+} __attribute__ ((packed));
+
+/* BT_SETCONFIGURATION_REQ */
+struct bt_setconfiguration_req {
+ bt_audio_msg_header_t h;
+ SBC_capabilities_t sbc_capabilities; /* A2DP only - only one of this field
+ and next one must be filled */
+ MPEG_capabilities_t mpeg_capabilities; /* A2DP only */
+} __attribute__ ((packed));
+
+/* BT_SETCONFIGURATION_RSP */
+struct bt_setconfiguration_rsp {
+ bt_audio_msg_header_t h;
+ uint8_t posix_errno;
+} __attribute__ ((packed));
+
+/* BT_STREAMSTART_REQ */
+#define BT_STREAM_ACCESS_READ 0
+#define BT_STREAM_ACCESS_WRITE 1
+#define BT_STREAM_ACCESS_READWRITE 2
+struct bt_streamstart_req {
+ bt_audio_msg_header_t h;
+} __attribute__ ((packed));
+
+/* BT_STREAMSTART_RSP */
+struct bt_streamstart_rsp {
+ bt_audio_msg_header_t h;
+ uint8_t posix_errno;
+} __attribute__ ((packed));
+
+/* BT_STREAMFD_IND */
+/* This message is followed by one byte of data containing the stream data fd
+ as ancilliary data */
+struct bt_datafd_ind {
+ bt_audio_msg_header_t h;
+} __attribute__ ((packed));
+
+/* BT_STREAMSTOP_REQ */
+struct bt_streamstop_req {
+ bt_audio_msg_header_t h;
+} __attribute__ ((packed));
+
+/* BT_STREAMSTOP_RSP */
+struct bt_streamstop_rsp {
+ bt_audio_msg_header_t h;
+ uint8_t posix_errno;
+} __attribute__ ((packed));
+
+/* BT_STREAMSUSPEND_IND */
+struct bt_streamsuspend_ind {
+ bt_audio_msg_header_t h;
+} __attribute__ ((packed));
+
+/* BT_STREAMRESUME_IND */
+struct bt_streamresume_ind {
+ bt_audio_msg_header_t h;
+} __attribute__ ((packed));
+
+/* BT_CONTROL_REQ */
+
+#define BT_CONTROL_KEY_POWER 0x40
+#define BT_CONTROL_KEY_VOL_UP 0x41
+#define BT_CONTROL_KEY_VOL_DOWN 0x42
+#define BT_CONTROL_KEY_MUTE 0x43
+#define BT_CONTROL_KEY_PLAY 0x44
+#define BT_CONTROL_KEY_STOP 0x45
+#define BT_CONTROL_KEY_PAUSE 0x46
+#define BT_CONTROL_KEY_RECORD 0x47
+#define BT_CONTROL_KEY_REWIND 0x48
+#define BT_CONTROL_KEY_FAST_FORWARD 0x49
+#define BT_CONTROL_KEY_EJECT 0x4A
+#define BT_CONTROL_KEY_FORWARD 0x4B
+#define BT_CONTROL_KEY_BACKWARD 0x4C
+
+struct bt_control_req {
+ bt_audio_msg_header_t h;
+ uint8_t mode; /* Control Mode */
+ uint8_t key; /* Control Key */
+} __attribute__ ((packed));
+
+/* BT_CONTROL_RSP */
+struct bt_control_rsp {
+ bt_audio_msg_header_t h;
+ uint8_t posix_errno;
+ uint8_t mode; /* Control Mode */
+ uint8_t key; /* Control Key */
+} __attribute__ ((packed));
+
+/* BT_CONTROL_IND */
+struct bt_control_ind {
+ bt_audio_msg_header_t h;
+ uint8_t mode; /* Control Mode */
+ uint8_t key; /* Control Key */
+} __attribute__ ((packed));
+
+/* Function declaration */
+
+/* Opens a connection to the audio service: return a socket descriptor */
+int bt_audio_service_open();
+
+/* Closes a connection to the audio service */
+int bt_audio_service_close(int sk);
+
+/* Receives stream data file descriptor : must be called after a
+BT_STREAMFD_IND message is returned */
+int bt_audio_service_get_data_fd(int sk);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* BTAUDIOSERVICE_H */
Index: Makefile.am
===================================================================
--- Makefile.am (.../tags/20071019_1300/audio) (révision 144)
+++ Makefile.am (.../branches/20071019_1300/audio) (révision 144)
@@ -20,18 +20,18 @@
if ALSA
alsadir = $(libdir)/alsa-lib
alsa_LTLIBRARIES = libasound_module_pcm_bluetooth.la libasound_module_ctl_bluetooth.la
-libasound_module_pcm_bluetooth_la_SOURCES = pcm_bluetooth.c ipc.h
+libasound_module_pcm_bluetooth_la_SOURCES = pcm_bluetooth.c btaudioservice.h btaudioservice.c
libasound_module_pcm_bluetooth_la_LDFLAGS = -module -avoid-version -export-symbols-regex [_]*snd_pcm_.*
libasound_module_pcm_bluetooth_la_LIBADD = @SBC_LIBS@ @ALSA_LIBS@
libasound_module_pcm_bluetooth_la_CFLAGS = @ALSA_CFLAGS@ @SBC_CFLAGS@
-libasound_module_ctl_bluetooth_la_SOURCES = ctl_bluetooth.c ipc.h
+libasound_module_ctl_bluetooth_la_SOURCES = ctl_bluetooth.c btaudioservice.h btaudioservice.c
libasound_module_ctl_bluetooth_la_LDFLAGS = -module -avoid-version -export-symbols-regex [_]*snd_ctl_.*
libasound_module_ctl_bluetooth_la_LIBADD = @ALSA_LIBS@
libasound_module_ctl_bluetooth_la_CFLAGS = @ALSA_CFLAGS@
endif
if GSTREAMER
Index: pcm_bluetooth.c
===================================================================
--- pcm_bluetooth.c (.../tags/20071019_1300/audio) (révision 144)
+++ pcm_bluetooth.c (.../branches/20071019_1300/audio) (révision 144)
@@ -33,13 +33,13 @@
#include <netinet/in.h>
#include <alsa/asoundlib.h>
#include <alsa/pcm_external.h>
-#include "ipc.h"
+#include "btaudioservice.h"
#include "sbc.h"
#include "rtp.h"
//#define ENABLE_DEBUG
#define UINT_SECS_MAX (UINT_MAX / 1000000 - 1)
@@ -65,38 +65,65 @@
#ifndef SCO_RXBUFS
#define SCO_RXBUFS 0x04
#endif
struct bluetooth_a2dp {
- sbc_t sbc; /* Codec data */
- int codesize; /* SBC codesize */
- int samples; /* Number of encoded samples */
- uint8_t buffer[MAX_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*/
+ SBC_capabilities_t sbc_capabilities;
+ sbc_t sbc; /* Codec data */
+ int sbc_initialized; /* Keep track if the encoder is initialized */
+ int codesize; /* SBC codesize */
+ int samples; /* Number of encoded samples */
+ uint8_t buffer[MAX_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 bluetooth_alsa_config {
+ char device[18]; /* Address of the remote Device */
+ int has_device;
+ uint8_t transport; /* Requested transport */
+ int has_transport;
+ uint16_t rate;
+ int has_rate;
+ uint8_t channel_mode; /* A2DP only */
+ int has_channel_mode;
+ uint8_t allocation_method; /* A2DP only */
+ int has_allocation_method;
+ uint8_t subbands; /* A2DP only */
+ int has_subbands;
+ uint8_t block_length; /* A2DP only */
+ int has_block_length;
+ uint8_t bitpool; /* A2DP only */
+ int has_bitpool;
};
struct bluetooth_data {
snd_pcm_ioplug_t io;
+ struct bluetooth_alsa_config alsa_config; /* ALSA resource file parameters */
volatile snd_pcm_sframes_t hw_ptr;
- struct ipc_data_cfg cfg; /* Bluetooth device config */
- struct pollfd stream; /* Audio stream filedescriptor */
- struct pollfd server; /* Audio daemon filedescriptor */
- uint8_t buffer[MAX_BUFFER_SIZE];/* Encoded transfer buffer */
- int count; /* Transfer buffer counter */
- struct bluetooth_a2dp a2dp; /* A2DP data */
+ int transport; /* chosen transport SCO or AD2P */
+ int link_mtu; /* MTU for selected transport channel */
+ volatile struct pollfd stream; /* Audio stream filedescriptor */
+ struct pollfd server; /* Audio daemon filedescriptor */
+ uint8_t buffer[MAX_BUFFER_SIZE]; /* Encoded transfer buffer */
+ int count; /* Transfer buffer counter */
+ struct bluetooth_a2dp a2dp; /* A2DP data */
- pthread_t hw_thread; /* Makes virtual hw pointer move */
- int pipefd[2]; /* Inter thread communication */
+ pthread_t hw_thread; /* Makes virtual hw pointer move */
+ int pipefd[2]; /* Inter thread communication */
int stopped;
};
+static int audioservice_send(int sk, const bt_audio_msg_header_t * msg);
+static int audioservice_expect(int sk, bt_audio_msg_header_t * outmsg,
+ int expected_type);
+
static int bluetooth_start(snd_pcm_ioplug_t *io)
{
DBG("bluetooth_start %p", io);
return 0;
}
@@ -184,78 +211,19 @@
}
data->hw_thread = 0;
pthread_exit(NULL);
}
-#if 0
-static int bluetooth_state_init(struct ipc_packet *pkt, int newstate)
-{
- struct ipc_data_state *state = (void *) pkt->data;
-
- pkt->length = sizeof(*state);
- pkt->type = PKT_TYPE_STATE_REQ;
- pkt->error = PKT_ERROR_NONE;
- state->state = newstate;
-
- return 0;
-}
-
-static int bluetooth_state(struct bluetooth_data *data, int newstate)
-{
- char buf[IPC_MTU];
- struct ipc_packet *pkt = (void *) buf;
- struct ipc_data_state *state = (void *) pkt->data;
- int ret;
-
- memset(buf, 0, sizeof(buf));
-
- ret = bluetooth_state_init(pkt, newstate);
- if (ret < 0)
- return -ret;
-
- ret = send(data->server.fd, pkt, sizeof(*pkt) + pkt->length, 0);
- if (ret < 0)
- return -errno;
- else if (ret == 0)
- return -EIO;
-
- DBG("OK - %d bytes sent. Waiting for response...", ret);
-
- memset(buf, 0, sizeof(buf));
-
- ret = recv(data->server.fd, buf, sizeof(*pkt) + sizeof(*state), 0);
- if (ret < 0)
- return -errno;
- else if (ret == 0)
- return -EIO;
-
- if (pkt->type != PKT_TYPE_STATE_RSP) {
- SNDERR("Unexpected packet type %d received", pkt->type);
- return -EINVAL;
- }
-
- if (pkt->error != PKT_ERROR_NONE) {
- SNDERR("Error %d while configuring device", pkt->error);
- return -pkt->error;
- }
-
- return 0;
-}
-#endif
-
static int bluetooth_playback_start(snd_pcm_ioplug_t *io)
{
struct bluetooth_data *data = io->private_data;
int err;
DBG("%p", io);
-#if 0
- bluetooth_state(data, STATE_STREAMING);
-#endif
data->stopped = 0;
if (data->hw_thread)
return 0;
err = pthread_create(&data->hw_thread, 0, playback_hw_thread, data);
@@ -266,15 +234,12 @@
static int bluetooth_playback_stop(snd_pcm_ioplug_t *io)
{
struct bluetooth_data *data = io->private_data;
DBG("%p", io);
-#if 0
- bluetooth_state(data, STATE_CONNECTED);
-#endif
data->stopped = 1;
return 0;
}
static snd_pcm_sframes_t bluetooth_pointer(snd_pcm_ioplug_t *io)
@@ -286,23 +251,23 @@
static void bluetooth_exit(struct bluetooth_data *data)
{
struct bluetooth_a2dp *a2dp = &data->a2dp;
if (data->server.fd >= 0)
- close(data->server.fd);
+ bt_audio_service_close(data->server.fd);
if (data->stream.fd >= 0)
close(data->stream.fd);
if (data->hw_thread) {
pthread_cancel(data->hw_thread);
pthread_join(data->hw_thread, 0);
}
- if (data->cfg.codec == CFG_CODEC_SBC)
+ if (a2dp->sbc_initialized)
sbc_finish(&a2dp->sbc);
if (data->pipefd[0] > 0)
close(data->pipefd[0]);
if (data->pipefd[1] > 0)
@@ -323,82 +288,207 @@
}
static int bluetooth_prepare(snd_pcm_ioplug_t *io)
{
struct bluetooth_data *data = io->private_data;
char c = 'w';
+ char buf[BT_AUDIO_IPC_PACKET_SIZE];
+ struct bt_streamstart_req *start_req = (void*) buf;
+ struct bt_streamstart_rsp *start_rsp = (void*) buf;
+ struct bt_datafd_ind *datafd_ind = (void*) buf;
+ uint32_t period_count = io->buffer_size / io->period_size;
+ int opt_name, err;
+ struct timeval t = { 0, period_count };
DBG("Preparing with io->period_size=%lu io->buffer_size=%lu",
io->period_size, io->buffer_size);
+ /* As we're gonna receive messages on the server socket, we have to stop the
+ hw thread that is polling on it, if any */
+
+ if (data->hw_thread) {
+ pthread_cancel(data->hw_thread);
+ pthread_join(data->hw_thread, 0);
+ data->hw_thread = 0;
+ }
+
if (io->stream == SND_PCM_STREAM_PLAYBACK)
/* If not null for playback, xmms doesn't display time
* correctly */
data->hw_ptr = 0;
else
/* ALSA library is really picky on the fact hw_ptr is not null.
* If it is, capture won't start */
data->hw_ptr = io->period_size;
- /* wake up any client polling at us */
- return write(data->pipefd[1], &c, 1);
-}
+ /* send start */
+ memset(start_req, 0, BT_AUDIO_IPC_PACKET_SIZE);
+ start_req->h.msg_type = BT_STREAMSTART_REQ;
-static int bluetooth_hsp_hw_params(snd_pcm_ioplug_t *io,
- snd_pcm_hw_params_t *params)
-{
- struct bluetooth_data *data = io->private_data;
- uint32_t period_count = io->buffer_size / io->period_size;
- int opt_name, err;
+ err = audioservice_send(data->server.fd, &start_req->h);
+ if (err < 0)
+ return err;
+
+ err = audioservice_expect(data->server.fd, &start_rsp->h, BT_STREAMSTART_RSP);
+ if (err < 0)
+ return err;
+
+ if (start_rsp->posix_errno != 0) {
+ SNDERR("BT_START failed : %s(%d)",
+ strerror(start_rsp->posix_errno),
+ start_rsp->posix_errno);
+ return -start_rsp->posix_errno;
+ }
+
+ err = audioservice_expect(data->server.fd, &datafd_ind->h, BT_STREAMFD_IND);
+ if (err < 0)
+ return err;
+
+ if (data->stream.fd >= 0)
+ close(data->stream.fd);
- DBG("fd=%d period_count=%d", data->stream.fd, period_count);
+ data->stream.fd = bt_audio_service_get_data_fd(data->server.fd);
+ if (data->stream.fd < 0) {
+ return -errno;
+ }
+
+ if (data->transport == BT_CAPABILITIES_TRANSPORT_A2DP) {
+ opt_name = (io->stream == SND_PCM_STREAM_PLAYBACK) ?
+ SO_SNDTIMEO : SO_RCVTIMEO;
- opt_name = (io->stream == SND_PCM_STREAM_PLAYBACK) ?
+ if (setsockopt(data->stream.fd, SOL_SOCKET, opt_name, &t,
+ sizeof(t)) < 0) {
+ return -errno;
+ }
+ } else {
+ opt_name = (io->stream == SND_PCM_STREAM_PLAYBACK) ?
SCO_TXBUFS : SCO_RXBUFS;
- if (setsockopt(data->stream.fd, SOL_SCO, opt_name, &period_count,
+ if (setsockopt(data->stream.fd, SOL_SCO, opt_name, &period_count,
sizeof(period_count)) == 0)
- return 0;
+ return 0;
- opt_name = (io->stream == SND_PCM_STREAM_PLAYBACK) ?
+ opt_name = (io->stream == SND_PCM_STREAM_PLAYBACK) ?
SO_SNDBUF : SO_RCVBUF;
- if (setsockopt(data->stream.fd, SOL_SCO, opt_name, &period_count,
+ if (setsockopt(data->stream.fd, SOL_SCO, opt_name, &period_count,
sizeof(period_count)) == 0)
- return 0;
-
- err = errno;
+ return 0;
- SNDERR("%s (%d)", strerror(err), err);
+ /* FIXME : handle error codes */
+ }
- /* FIXME: We should not ignores errors in the future. */
- return 0;
+ /* wake up any client polling at us */
+ return write(data->pipefd[1], &c, 1);
}
static int bluetooth_a2dp_hw_params(snd_pcm_ioplug_t *io,
snd_pcm_hw_params_t *params)
{
struct bluetooth_data *data = io->private_data;
- uint32_t period_count = io->buffer_size / io->period_size;
- int opt_name, err;
- struct timeval t = { 0, period_count };
+ struct bluetooth_a2dp *a2dp = &data->a2dp;
+ char buf[BT_AUDIO_IPC_PACKET_SIZE];
+ struct bt_setconfiguration_req *setconf_req = (void*) buf;
+ struct bt_setconfiguration_rsp *setconf_rsp = (void*) buf;
+ int err;
+ SBC_capabilities_t active_capabilities;
- DBG("fd=%d period_count=%d", data->stream.fd, period_count);
+ DBG("Preparing with io->period_size=%lu io->buffer_size=%lu",
+ io->period_size, io->buffer_size);
- opt_name = (io->stream == SND_PCM_STREAM_PLAYBACK) ?
- SO_SNDTIMEO : SO_RCVTIMEO;
+ /* FIXME: this needs to be really implemented (take into account
+ real asoundrc settings + ALSA hw settings ) once server side sends us
+ more than one possible configuration */
+ active_capabilities = a2dp->sbc_capabilities;
+
+ memset(setconf_req, 0, BT_AUDIO_IPC_PACKET_SIZE);
+ setconf_req->h.msg_type = BT_SETCONFIGURATION_REQ;
+ setconf_req->sbc_capabilities = active_capabilities;
- if (setsockopt(data->stream.fd, SOL_SOCKET, opt_name, &t,
- sizeof(t)) == 0)
- return 0;
+ err = audioservice_send(data->server.fd, &setconf_req->h);
+ if (err < 0)
+ return err;
- err = errno;
+ err = audioservice_expect(data->server.fd, &setconf_rsp->h, BT_SETCONFIGURATION_RSP);
+ if (err < 0)
+ return err;
- SNDERR("%s (%d)", strerror(err), err);
+ if (setconf_rsp->posix_errno != 0) {
+ SNDERR("BT_SETCONFIGURATION failed : %s(%d)",
+ strerror(setconf_rsp->posix_errno),
+ setconf_rsp->posix_errno);
+ return -setconf_rsp->posix_errno;
+ }
- return -err;
+ /* Setup SBC encoder now we agree on parameters */
+ if (a2dp->sbc_initialized)
+ sbc_finish(&a2dp->sbc);
+
+ /* FIXME: init using flags? */
+ sbc_init(&a2dp->sbc, 0);
+ a2dp->sbc_initialized = 1;
+ if (active_capabilities.frequency & BT_A2DP_SAMPLING_FREQ_16000)
+ a2dp->sbc.rate = 16000;
+
+ if (active_capabilities.frequency & BT_A2DP_SAMPLING_FREQ_32000)
+ a2dp->sbc.rate = 32000;
+
+ if (active_capabilities.frequency & BT_A2DP_SAMPLING_FREQ_44100)
+ a2dp->sbc.rate = 44100;
+
+ if (active_capabilities.frequency & BT_A2DP_SAMPLING_FREQ_48000)
+ a2dp->sbc.rate = 48000;
+
+ if (active_capabilities.channel_mode & BT_A2DP_CHANNEL_MODE_MONO)
+ a2dp->sbc.channels = 1;
+ else
+ a2dp->sbc.channels = 2;
+
+ if (active_capabilities.channel_mode &
+ (BT_A2DP_CHANNEL_MODE_MONO || BT_A2DP_CHANNEL_MODE_JOINT_STEREO))
+ a2dp->sbc.joint = 1;
+ else
+ a2dp->sbc.joint = 0;
+
+ a2dp->sbc.allocation = active_capabilities.allocation_method
+ == BT_A2DP_ALLOCATION_SNR ? 0x01 : 0x00;
+
+ switch (active_capabilities.subbands) {
+ case BT_A2DP_SUBBANDS_4:
+ a2dp->sbc.subbands = 4;
+ break;
+ case BT_A2DP_SUBBANDS_8:
+ a2dp->sbc.subbands = 8;
+ break;
+ }
+
+ switch (active_capabilities.block_length) {
+ case BT_A2DP_BLOCK_LENGTH_4:
+ a2dp->sbc.blocks = 4;
+ break;
+ case BT_A2DP_BLOCK_LENGTH_8:
+ a2dp->sbc.blocks = 8;
+ break;
+ case BT_A2DP_BLOCK_LENGTH_12:
+ a2dp->sbc.blocks = 12;
+ break;
+ case BT_A2DP_BLOCK_LENGTH_16:
+ a2dp->sbc.blocks = 16;
+ break;
+ }
+
+ a2dp->sbc.bitpool = active_capabilities.max_bitpool;
+ a2dp->codesize = a2dp->sbc.subbands * a2dp->sbc.blocks *
+ a2dp->sbc.channels * 2;
+ a2dp->count = sizeof(struct rtp_header) + sizeof(struct rtp_payload);
+
+ DBG("\tallocation=%u\n\tsubbands=%u\n\tblocks=%u\n\tbitpool=%u\n",
+ a2dp->sbc.allocation, a2dp->sbc.subbands, a2dp->sbc.blocks,
+ a2dp->sbc.bitpool);
+
+ return 0;
}
static int bluetooth_poll_descriptors(snd_pcm_ioplug_t *io,
struct pollfd *pfd, unsigned int space)
{
struct bluetooth_data *data = io->private_data;
@@ -470,55 +560,54 @@
static snd_pcm_sframes_t bluetooth_hsp_read(snd_pcm_ioplug_t *io,
const snd_pcm_channel_area_t *areas,
snd_pcm_uframes_t offset, snd_pcm_uframes_t size)
{
struct bluetooth_data *data = io->private_data;
- struct ipc_data_cfg cfg = data->cfg;
snd_pcm_uframes_t frames_to_write, ret;
unsigned char *buff;
int nrecv, frame_size = 0;
DBG("areas->step=%u areas->first=%u offset=%lu size=%lu io->nonblock=%u",
areas->step, areas->first, offset, size, io->nonblock);
if (data->count > 0)
goto proceed;
frame_size = areas->step / 8;
- nrecv = recv(data->stream.fd, data->buffer, cfg.pkt_len,
+ nrecv = recv(data->stream.fd, data->buffer, data->link_mtu,
MSG_WAITALL | (io->nonblock ? MSG_DONTWAIT : 0));
if (nrecv < 0) {
ret = (errno == EPIPE) ? -EIO : -errno;
goto done;
}
- if (nrecv != cfg.pkt_len) {
+ if (nrecv != data->link_mtu) {
ret = -EIO;
SNDERR(strerror(-ret));
goto done;
}
/* Increment hardware transmition pointer */
- data->hw_ptr = (data->hw_ptr + cfg.pkt_len / cfg.sample_size) %
+ data->hw_ptr = (data->hw_ptr + data->link_mtu / frame_size) %
io->buffer_size;
proceed:
buff = (unsigned char *) areas->addr +
(areas->first + areas->step * offset) / 8;
- if ((data->count + size * frame_size) <= cfg.pkt_len)
+ if ((data->count + size * frame_size) <= data->link_mtu)
frames_to_write = size;
else
- frames_to_write = (cfg.pkt_len - data->count) / frame_size;
+ frames_to_write = (data->link_mtu - data->count) / frame_size;
memcpy(buff, data->buffer + data->count, frame_size * frames_to_write);
data->count += (frame_size * frames_to_write);
- data->count %= cfg.pkt_len;
+ data->count %= data->link_mtu;
/* Return written frames count */
ret = frames_to_write;
done:
DBG("returning %lu", ret);
@@ -527,13 +616,12 @@
static snd_pcm_sframes_t bluetooth_hsp_write(snd_pcm_ioplug_t *io,
const snd_pcm_channel_area_t *areas,
snd_pcm_uframes_t offset, snd_pcm_uframes_t size)
{
struct bluetooth_data *data = io->private_data;
- struct ipc_data_cfg cfg = data->cfg;
snd_pcm_sframes_t ret = 0;
snd_pcm_uframes_t frames_to_read;
uint8_t *buff;
int rsend, frame_size;
DBG("areas->step=%u areas->first=%u offset=%lu, size=%lu io->nonblock=%u",
@@ -544,32 +632,32 @@
if (ret == 0)
ret = -EPIPE;
goto done;
}
frame_size = areas->step / 8;
- if ((data->count + size * frame_size) <= cfg.pkt_len)
+ if ((data->count + size * frame_size) <= data->link_mtu)
frames_to_read = size;
else
- frames_to_read = (cfg.pkt_len - data->count) / frame_size;
+ frames_to_read = (data->link_mtu - data->count) / frame_size;
DBG("count=%d frames_to_read=%lu", data->count, frames_to_read);
/* Ready for more data */
buff = (uint8_t *) areas->addr +
(areas->first + areas->step * offset) / 8;
memcpy(data->buffer + data->count, buff, frame_size * frames_to_read);
/* Remember we have some frames in the pipe now */
data->count += frames_to_read * frame_size;
- if (data->count != cfg.pkt_len) {
+ if (data->count != data->link_mtu) {
ret = frames_to_read;
goto done;
}
- rsend = send(data->stream.fd, data->buffer, cfg.pkt_len,
+ rsend = send(data->stream.fd, data->buffer, data->link_mtu,
io->nonblock ? MSG_DONTWAIT : 0);
if (rsend > 0) {
/* Reset count pointer */
data->count = 0;
ret = frames_to_read;
@@ -666,13 +754,13 @@
if ((data->count + size * frame_size) <= a2dp->codesize)
frames_to_read = size;
else
frames_to_read = (a2dp->codesize - data->count) / frame_size;
DBG("count=%d frames_to_read=%lu", data->count, frames_to_read);
- DBG("a2dp.count=%d cfg.pkt_len=%d", a2dp->count, data->cfg.pkt_len);
+ DBG("a2dp.count=%d data.link_mtu=%d", a2dp->count, data->link_mtu);
/* FIXME: If state is not streaming then return */
/* Ready for more data */
buff = (uint8_t *) areas->addr +
(areas->first + areas->step * offset) / 8;
@@ -693,13 +781,13 @@
}
data->count -= encoded;
DBG("encoded=%d a2dp.sbc.len=%d", encoded, a2dp->sbc.len);
- if (a2dp->count + a2dp->sbc.len >= data->cfg.pkt_len) {
+ if (a2dp->count + a2dp->sbc.len >= data->link_mtu) {
ret = avdtp_write(data);
if (ret < 0) {
if (-ret == EPIPE)
ret = -EIO;
goto done;
}
@@ -739,26 +827,24 @@
static snd_pcm_ioplug_callback_t bluetooth_hsp_playback = {
.start = bluetooth_playback_start,
.stop = bluetooth_playback_stop,
.pointer = bluetooth_pointer,
.close = bluetooth_close,
- .hw_params = bluetooth_hsp_hw_params,
.prepare = bluetooth_prepare,
.transfer = bluetooth_hsp_write,
.poll_descriptors = bluetooth_playback_poll_descriptors,
.poll_revents = bluetooth_playback_poll_revents,
.delay = bluetooth_playback_delay,
};
static snd_pcm_ioplug_callback_t bluetooth_hsp_capture = {
.start = bluetooth_start,
.stop = bluetooth_stop,
.pointer = bluetooth_pointer,
.close = bluetooth_close,
- .hw_params = bluetooth_hsp_hw_params,
.prepare = bluetooth_prepare,
.transfer = bluetooth_hsp_read,
.poll_descriptors = bluetooth_poll_descriptors,
.poll_revents = bluetooth_poll_revents,
};
@@ -789,24 +875,23 @@
#define ARRAY_NELEMS(a) (sizeof((a)) / sizeof((a)[0]))
static int bluetooth_hsp_hw_constraint(snd_pcm_ioplug_t *io)
{
struct bluetooth_data *data = io->private_data;
- struct ipc_data_cfg cfg = data->cfg;
snd_pcm_access_t access_list[] = {
SND_PCM_ACCESS_RW_INTERLEAVED,
/* Mmap access is really useless fo this driver, but we
* support it because some pieces of software out there
* insist on using it */
SND_PCM_ACCESS_MMAP_INTERLEAVED
};
unsigned int format_list[] = {
SND_PCM_FORMAT_S16_LE
};
- int err, channels;
+ int err;
/* access type */
err = snd_pcm_ioplug_set_param_list(io, SND_PCM_IOPLUG_HW_ACCESS,
ARRAY_NELEMS(access_list), access_list);
if (err < 0)
return err;
@@ -815,27 +900,26 @@
err = snd_pcm_ioplug_set_param_list(io, SND_PCM_IOPLUG_HW_FORMAT,
ARRAY_NELEMS(format_list), format_list);
if (err < 0)
return err;
/* supported channels */
- channels = cfg.mode == CFG_MODE_MONO ? 1 : 2;
err = snd_pcm_ioplug_set_param_minmax(io, SND_PCM_IOPLUG_HW_CHANNELS,
- channels, channels);
+ 1, 1);
if (err < 0)
return err;
/* supported rate */
err = snd_pcm_ioplug_set_param_minmax(io, SND_PCM_IOPLUG_HW_RATE,
- cfg.rate, cfg.rate);
+ 8000, 8000);
if (err < 0)
return err;
/* supported block size */
err = snd_pcm_ioplug_set_param_minmax(io, SND_PCM_IOPLUG_HW_PERIOD_BYTES,
- cfg.pkt_len, cfg.pkt_len);
+ data->link_mtu, data->link_mtu);
if (err < 0)
return err;
err = snd_pcm_ioplug_set_param_minmax(io, SND_PCM_IOPLUG_HW_PERIODS,
2, 200);
if (err < 0)
@@ -845,24 +929,25 @@
}
static int bluetooth_a2dp_hw_constraint(snd_pcm_ioplug_t *io)
{
struct bluetooth_data *data = io->private_data;
struct bluetooth_a2dp *a2dp = &data->a2dp;
- struct ipc_data_cfg cfg = data->cfg;
snd_pcm_access_t access_list[] = {
SND_PCM_ACCESS_RW_INTERLEAVED,
/* Mmap access is really useless fo this driver, but we
* support it because some pieces of software out there
* insist on using it */
SND_PCM_ACCESS_MMAP_INTERLEAVED
};
unsigned int format_list[] = {
SND_PCM_FORMAT_S16_LE
};
- int err, channels;
+ unsigned int rate_list[4];
+ unsigned int rate_count;
+ int err, min_channels, max_channels;
/* access type */
err = snd_pcm_ioplug_set_param_list(io, SND_PCM_IOPLUG_HW_ACCESS,
ARRAY_NELEMS(access_list), access_list);
if (err < 0)
return err;
@@ -871,139 +956,79 @@
err = snd_pcm_ioplug_set_param_list(io, SND_PCM_IOPLUG_HW_FORMAT,
ARRAY_NELEMS(format_list), format_list);
if (err < 0)
return err;
/* supported channels */
- channels = cfg.mode == CFG_MODE_MONO ? 1 : 2;
+ if (a2dp->sbc_capabilities.channel_mode & BT_A2DP_CHANNEL_MODE_MONO)
+ min_channels = 1;
+ else
+ min_channels = 2;
+
+ if (a2dp->sbc_capabilities.channel_mode & (~BT_A2DP_CHANNEL_MODE_MONO))
+ max_channels = 2;
+ else
+ max_channels = 1;
+
err = snd_pcm_ioplug_set_param_minmax(io, SND_PCM_IOPLUG_HW_CHANNELS,
- channels, channels);
+ min_channels, max_channels);
if (err < 0)
return err;
- /* supported rate */
- err = snd_pcm_ioplug_set_param_minmax(io, SND_PCM_IOPLUG_HW_RATE,
- cfg.rate, cfg.rate);
+ /* supported rates */
+ rate_count = 0;
+ if (a2dp->sbc_capabilities.frequency & BT_A2DP_SAMPLING_FREQ_16000) {
+ rate_list[rate_count] = 16000;
+ rate_count++;
+ }
+
+ if (a2dp->sbc_capabilities.frequency & BT_A2DP_SAMPLING_FREQ_32000) {
+ rate_list[rate_count] = 32000;
+ rate_count++;
+ }
+
+ if (a2dp->sbc_capabilities.frequency & BT_A2DP_SAMPLING_FREQ_44100) {
+ rate_list[rate_count] = 44100;
+ rate_count++;
+ }
+
+ if (a2dp->sbc_capabilities.frequency & BT_A2DP_SAMPLING_FREQ_48000) {
+ rate_list[rate_count] = 48000;
+ rate_count++;
+ }
+
+ err = snd_pcm_ioplug_set_param_list(io, SND_PCM_IOPLUG_HW_RATE,
+ rate_count, rate_list);
if (err < 0)
return err;
- /* supported block sizes:
- * - lower limit is A2DP codec size
- * - total buffer size is the upper limit (with two periods) */
- err = snd_pcm_ioplug_set_param_minmax(io,
- SND_PCM_IOPLUG_HW_PERIOD_BYTES,
- a2dp->codesize,
- MAX_BUFFER_SIZE / 2);
+ /* supported block size */
+ err = snd_pcm_ioplug_set_param_minmax(io, SND_PCM_IOPLUG_HW_PERIOD_BYTES,
+ 512, MAX_BUFFER_SIZE / 2);
if (err < 0)
return err;
/* supported buffer sizes */
err = snd_pcm_ioplug_set_param_minmax(io,
SND_PCM_IOPLUG_HW_BUFFER_BYTES,
MIN_BUFFER_SIZE,
MAX_BUFFER_SIZE);
if (err < 0)
return err;
- /* supported period count:
- * - derived from max buffer size and minimum period size */
- err = snd_pcm_ioplug_set_param_minmax(io, SND_PCM_IOPLUG_HW_PERIODS,
- 2, MAX_BUFFER_SIZE / a2dp->codesize);
- if (err < 0)
- return err;
-
return 0;
}
-static int bluetooth_recvmsg_fd(struct bluetooth_data *data)
-{
- char cmsg_b[CMSG_SPACE(sizeof(int))], m;
- int err, ret;
- struct iovec iov = { &m, sizeof(m) };
- struct msghdr msgh;
- struct cmsghdr *cmsg;
-
- memset(&msgh, 0, sizeof(msgh));
- msgh.msg_iov = &iov;
- msgh.msg_iovlen = 1;
- msgh.msg_control = &cmsg_b;
- msgh.msg_controllen = CMSG_LEN(sizeof(int));
-
- ret = recvmsg(data->server.fd, &msgh, 0);
- if (ret < 0) {
- err = errno;
- SNDERR("Unable to receive fd: %s (%d)", strerror(err), err);
- return -err;
- }
-
- /* Receive auxiliary data in msgh */
- for (cmsg = CMSG_FIRSTHDR(&msgh); cmsg != NULL;
- cmsg = CMSG_NXTHDR(&msgh, cmsg)) {
- if (cmsg->cmsg_level == SOL_SOCKET
- && cmsg->cmsg_type == SCM_RIGHTS) {
- data->stream.fd = (*(int *) CMSG_DATA(cmsg));
- DBG("stream_fd=%d", data->stream.fd);
- return 0;
- }
- }
-
- return -EINVAL;
-}
-
-static int bluetooth_a2dp_init(struct bluetooth_data *data,
- struct ipc_codec_sbc *sbc)
+static int bluetooth_parse_config(snd_config_t *conf,
+ struct bluetooth_alsa_config *bt_config)
{
- struct bluetooth_a2dp *a2dp = &data->a2dp;
- struct ipc_data_cfg *cfg = &data->cfg;
-
- if (cfg == NULL) {
- SNDERR("Error getting codec parameters");
- return -1;
- }
-
- if (cfg->codec != CFG_CODEC_SBC)
- return -1;
-
- /* FIXME: init using flags? */
- sbc_init(&a2dp->sbc, 0);
- a2dp->sbc.rate = cfg->rate;
- a2dp->sbc.channels = cfg->mode == CFG_MODE_MONO ? 1 : 2;
- if (cfg->mode == CFG_MODE_MONO || cfg->mode == CFG_MODE_JOINT_STEREO)
- a2dp->sbc.joint = 1;
- a2dp->sbc.allocation = sbc->allocation;
- a2dp->sbc.subbands = sbc->subbands;
- a2dp->sbc.blocks = sbc->blocks;
- a2dp->sbc.bitpool = sbc->bitpool;
- a2dp->codesize = a2dp->sbc.subbands * a2dp->sbc.blocks *
- a2dp->sbc.channels * 2;
- a2dp->count = sizeof(struct rtp_header) + sizeof(struct rtp_payload);
-
- DBG("\tallocation=%u\n\tsubbands=%u\n\tblocks=%u\n\tbitpool=%u\n",
- a2dp->sbc.allocation, a2dp->sbc.subbands, a2dp->sbc.blocks,
- a2dp->sbc.bitpool);
-
- return 0;
-}
-
-static int bluetooth_cfg_init(struct ipc_packet *pkt, snd_pcm_stream_t stream,
- snd_config_t *conf)
-{
- struct ipc_data_cfg *cfg = (void *) pkt->data;
- struct ipc_codec_sbc *sbc = (void *) cfg->data;
snd_config_iterator_t i, next;
const char *addr, *pref;
const char *mode, *allocation, *rate, *subbands, *blocks, *bitpool;
- switch (stream) {
- case SND_PCM_STREAM_PLAYBACK:
- cfg->fd_opt = CFG_FD_OPT_WRITE;
- break;
- case SND_PCM_STREAM_CAPTURE:
- cfg->fd_opt = CFG_FD_OPT_READ;
- break;
- }
+ memset(bt_config, 0, sizeof(struct bluetooth_alsa_config));
snd_config_for_each(i, next, conf) {
snd_config_t *n = snd_config_iterator_entry(i);
const char *id;
if (snd_config_get_id(n, &id) < 0)
@@ -1015,260 +1040,264 @@
if (strcmp(id, "device") == 0 || strcmp(id, "bdaddr") == 0) {
if (snd_config_get_string(n, &addr) < 0) {
SNDERR("Invalid type for %s", id);
return -EINVAL;
}
- strncpy(pkt->device, addr, 18);
+ bt_config->has_device = 1;
+ strncpy(bt_config->device, addr, 18);
continue;
}
if (strcmp(id, "profile") == 0) {
if (snd_config_get_string(n, &pref) < 0) {
SNDERR("Invalid type for %s", id);
return -EINVAL;
}
- if (strcmp(pref, "auto") == 0)
- pkt->role = PKT_ROLE_AUTO;
- else if (strcmp(pref, "voice") == 0 ||
+ if (strcmp(pref, "auto") == 0) {
+ bt_config->transport = BT_CAPABILITIES_TRANSPORT_ANY;
+ bt_config->has_transport = 1;
+ } else if (strcmp(pref, "voice") == 0 ||
strcmp(pref, "hfp") == 0) {
- pkt->role = PKT_ROLE_VOICE;
+ bt_config->transport = BT_CAPABILITIES_TRANSPORT_SCO;
+ bt_config->has_transport = 1;
} else if (strcmp(pref, "hifi") == 0 ||
- strcmp(pref, "a2dp") == 0)
- pkt->role = PKT_ROLE_HIFI;
+ strcmp(pref, "a2dp") == 0) {
+ bt_config->transport = BT_CAPABILITIES_TRANSPORT_A2DP;
+ bt_config->has_transport = 1;
+ }
continue;
}
if (strcmp(id, "rate") == 0) {
if (snd_config_get_string(n, &rate) < 0) {
SNDERR("Invalid type for %s", id);
return -EINVAL;
}
- cfg->rate = atoi(rate);
+ bt_config->rate = atoi(rate);
+ bt_config->has_rate = 1;
continue;
}
if (strcmp(id, "mode") == 0) {
if (snd_config_get_string(n, &mode) < 0) {
SNDERR("Invalid type for %s", id);
return -EINVAL;
}
- if (strcmp(pref, "auto") == 0)
- cfg->mode = CFG_MODE_AUTO;
- else if (strcmp(pref, "mono") == 0)
- cfg->mode = CFG_MODE_MONO;
- else if (strcmp(pref, "dual") == 0)
- cfg->mode = CFG_MODE_DUAL_CHANNEL;
- else if (strcmp(pref, "stereo") == 0)
- cfg->mode = CFG_MODE_STEREO;
- else if (strcmp(pref, "joint") == 0)
- cfg->mode = CFG_MODE_JOINT_STEREO;
+ if (strcmp(pref, "auto") == 0) {
+ bt_config->channel_mode = BT_A2DP_CHANNEL_MODE_MONO_AUTO;
+ bt_config->has_channel_mode = 1;
+ } else if (strcmp(pref, "mono") == 0) {
+ bt_config->channel_mode = BT_A2DP_CHANNEL_MODE_MONO;
+ bt_config->has_channel_mode = 1;
+ } else if (strcmp(pref, "dual") == 0) {
+ bt_config->channel_mode = BT_A2DP_CHANNEL_MODE_DUAL_CHANNEL;
+ bt_config->has_channel_mode = 1;
+ } else if (strcmp(pref, "stereo") == 0) {
+ bt_config->channel_mode = BT_A2DP_CHANNEL_MODE_STEREO;
+ bt_config->has_channel_mode = 1;
+ } else if (strcmp(pref, "joint") == 0) {
+ bt_config->channel_mode = BT_A2DP_CHANNEL_MODE_JOINT_STEREO;
+ bt_config->has_channel_mode = 1;
+ }
continue;
}
if (strcmp(id, "allocation") == 0) {
if (snd_config_get_string(n, &allocation) < 0) {
SNDERR("Invalid type for %s", id);
return -EINVAL;
}
- if (strcmp(pref, "auto") == 0)
- sbc->allocation = CFG_ALLOCATION_AUTO;
- else if (strcmp(pref, "loudness") == 0)
- sbc->allocation = CFG_ALLOCATION_LOUDNESS;
- else if (strcmp(pref, "snr") == 0)
- sbc->allocation = CFG_ALLOCATION_SNR;
+ if (strcmp(pref, "auto") == 0) {
+ bt_config->allocation_method = BT_A2DP_ALLOCATION_AUTO;
+ bt_config->has_allocation_method = 1;
+ } else if (strcmp(pref, "loudness") == 0) {
+ bt_config->allocation_method = BT_A2DP_ALLOCATION_LOUDNESS;
+ bt_config->has_allocation_method = 1;
+ } else if (strcmp(pref, "snr") == 0) {
+ bt_config->allocation_method = BT_A2DP_ALLOCATION_SNR;
+ bt_config->has_allocation_method = 1;
+ }
continue;
}
if (strcmp(id, "subbands") == 0) {
if (snd_config_get_string(n, &subbands) < 0) {
SNDERR("Invalid type for %s", id);
return -EINVAL;
}
- sbc->subbands = atoi(subbands);
+ bt_config->subbands = atoi(subbands);
+ bt_config->has_subbands = 1;
continue;
}
if (strcmp(id, "blocks") == 0) {
if (snd_config_get_string(n, &blocks) < 0) {
SNDERR("Invalid type for %s", id);
return -EINVAL;
}
- sbc->blocks = atoi(blocks);
+ bt_config->block_length = atoi(blocks);
+ bt_config->has_block_length = 1;
continue;
}
if (strcmp(id, "bitpool") == 0) {
if (snd_config_get_string(n, &bitpool) < 0) {
SNDERR("Invalid type for %s", id);
return -EINVAL;
}
- sbc->bitpool = atoi(bitpool);
+ bt_config->bitpool = atoi(bitpool);
+ bt_config->has_bitpool = 1;
continue;
}
SNDERR("Unknown field %s", id);
return -EINVAL;
}
- pkt->length = sizeof(*cfg) + sizeof(*sbc);
- pkt->type = PKT_TYPE_CFG_REQ;
- pkt->error = PKT_ERROR_NONE;
-
return 0;
}
-static int bluetooth_cfg(struct bluetooth_data *data, snd_pcm_stream_t stream,
- snd_config_t *conf)
+static int audioservice_send(int sk, const bt_audio_msg_header_t * msg)
{
- int ret, total;
- char buf[IPC_MTU];
- struct ipc_packet *pkt = (void *) buf;
- struct ipc_data_cfg *cfg = (void *) pkt->data;
- struct ipc_codec_sbc *sbc = (void *) cfg->data;
-
- DBG("Sending PKT_TYPE_CFG_REQ...");
-
- memset(buf, 0, sizeof(buf));
-
- ret = bluetooth_cfg_init(pkt, stream, conf);
- if (ret < 0)
- return -ret;
-
- ret = send(data->server.fd, pkt, sizeof(*pkt) + pkt->length, 0);
- if (ret < 0)
- return -errno;
- else if (ret == 0)
- return -EIO;
-
- DBG("OK - %d bytes sent. Waiting for response...", ret);
-
- memset(buf, 0, sizeof(buf));
-
- ret = recv(data->server.fd, buf, sizeof(*pkt) + sizeof(*cfg), 0);
- if (ret < 0)
- return -errno;
- else if (ret == 0)
- return -EIO;
-
- total = ret;
-
- if (pkt->type != PKT_TYPE_CFG_RSP) {
- SNDERR("Unexpected packet type %d received", pkt->type);
- return -EINVAL;
- }
-
- if (pkt->error != PKT_ERROR_NONE) {
- SNDERR("Error %d while configuring device", pkt->error);
- return -pkt->error;
- }
-
- if (cfg->codec != CFG_CODEC_SBC)
- goto done;
-
- ret = recv(data->server.fd, sbc, sizeof(*sbc), 0);
- if (ret < 0)
- return -errno;
- else if (ret == 0)
- return -EIO;
-
- total += ret;
-
-done:
- DBG("OK - %d bytes received", total);
-
- if (pkt->length != (total - sizeof(struct ipc_packet))) {
- SNDERR("Error while configuring device: packet size doesn't match");
- return -EINVAL;
+ int err;
+ DBG("sending %s", bt_audio_strmsg[msg->msg_type]);
+ if (send(sk, msg, BT_AUDIO_IPC_PACKET_SIZE, 0) > 0) {
+ err = 0;
+ } else {
+ err = -errno;
+ SNDERR("Error sending data to audio service: %s(%d)", strerror(errno), errno);
}
+ return err;
+}
- memcpy(&data->cfg, cfg, sizeof(*cfg));
-
- DBG("Device configuration:");
-
- DBG("\n\tfd=%d\n\tfd_opt=%u\n\tpkt_len=%u\n\tsample_size=%u\n\trate=%u",
- data->stream.fd, data->cfg.fd_opt, data->cfg.pkt_len,
- data->cfg.sample_size, data->cfg.rate);
-
- if (data->cfg.codec == CFG_CODEC_SBC) {
- ret = bluetooth_a2dp_init(data, sbc);
- if (ret < 0)
- return ret;
+static int audioservice_recv(int sk, bt_audio_msg_header_t * inmsg)
+{
+ int err;
+ DBG("trying to receive msg from audio service...");
+ if (recv(sk, inmsg, BT_AUDIO_IPC_PACKET_SIZE, 0) > 0) {
+ if (inmsg->msg_type <= BT_MSG_MAX) {
+ DBG("Received %s", bt_audio_strmsg[inmsg->msg_type]);
+ err = 0;
+ } else {
+ err = -EINVAL;
+ SNDERR("Bogus message type %d "
+ "received from audio service",
+ inmsg->msg_type);
+ }
+ } else {
+ err = -errno;
+ SNDERR("Error receiving data from audio service: %s(%d)",
+ strerror(errno), errno);
}
+ return err;
+}
- ret = bluetooth_recvmsg_fd(data);
- if (ret < 0)
- return ret;
-
- if (data->stream.fd == -1) {
- SNDERR("Error while configuring device: could not acquire audio socket");
- return -EINVAL;
+static int audioservice_expect(int sk, bt_audio_msg_header_t * outmsg,
+ int expected_type)
+{
+ int err = audioservice_recv(sk, outmsg);
+ if (err == 0) {
+ if (outmsg->msg_type != expected_type) {
+ err = -EINVAL;
+ SNDERR("Bogus message %s received while "
+ "%s was expected",
+ bt_audio_strmsg[outmsg->msg_type],
+ bt_audio_strmsg[expected_type]);
+ }
}
-
- /* It is possible there is some outstanding
- data in the pipe - we have to empty it */
- while (recv(data->stream.fd, data->buffer, data->cfg.pkt_len,
- MSG_DONTWAIT) > 0);
-
- memset(data->buffer, 0, sizeof(data->buffer));
-
- return 0;
+ return err;
}
static int bluetooth_init(struct bluetooth_data *data, snd_pcm_stream_t stream,
snd_config_t *conf)
{
int sk, err;
- struct sockaddr_un addr = {
- AF_UNIX, IPC_SOCKET_NAME
- };
-
- if (!data)
- return -EINVAL;
+ struct bluetooth_alsa_config *alsa_conf = &data->alsa_config;
+ char buf[BT_AUDIO_IPC_PACKET_SIZE];
+ struct bt_getcapabilities_req * getcaps_req = (void*) buf;
+ struct bt_getcapabilities_rsp * getcaps_rsp = (void*) buf;
memset(data, 0, sizeof(struct bluetooth_data));
+ err = bluetooth_parse_config(conf, alsa_conf);
+ if (err < 0)
+ return err;
+
data->server.fd = -1;
data->stream.fd = -1;
- sk = socket(PF_LOCAL, SOCK_STREAM, 0);
- if (sk < 0) {
- err = errno;
- SNDERR("Cannot open socket: %s (%d)", strerror(err), err);
- return -err;
- }
-
- DBG("Connecting to address: %s", addr.sun_path + 1);
- if (connect(sk, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
- err = errno;
- SNDERR("Connection fail", strerror(err), err);
- close(sk);
- return -err;
+ sk = bt_audio_service_open();
+ if(sk <= 0) {
+ err = -errno;
+ goto failed;
}
data->server.fd = sk;
data->server.events = POLLIN;
data->pipefd[0] = -1;
data->pipefd[1] = -1;
- if (pipe(data->pipefd) < 0)
- return -errno;
- if (fcntl(data->pipefd[0], F_SETFL, O_NONBLOCK) < 0)
- return -errno;
- if (fcntl(data->pipefd[1], F_SETFL, O_NONBLOCK) < 0)
- return -errno;
+ if (pipe(data->pipefd) < 0) {
+ err = -errno;
+ goto failed;
+ }
+ if (fcntl(data->pipefd[0], F_SETFL, O_NONBLOCK) < 0) {
+ err = -errno;
+ goto failed;
+ }
+ if (fcntl(data->pipefd[1], F_SETFL, O_NONBLOCK) < 0) {
+ err = -errno;
+ goto failed;
+ }
+
+ memset(getcaps_req, 0, BT_AUDIO_IPC_PACKET_SIZE);
+ getcaps_req->h.msg_type = BT_GETCAPABILITIES_REQ;
+ strncpy(getcaps_req->device, alsa_conf->device, 18);
+ if (alsa_conf->has_transport)
+ getcaps_req->transport = alsa_conf->transport;
+ else
+ getcaps_req->transport = BT_CAPABILITIES_TRANSPORT_ANY;
+
+ getcaps_req->access_mode = (stream == SND_PCM_STREAM_PLAYBACK ?
+ BT_CAPABILITIES_ACCESS_MODE_WRITE :
+ BT_CAPABILITIES_ACCESS_MODE_READ);
+
+ err = audioservice_send(data->server.fd, &getcaps_req->h);
+ if (err < 0)
+ goto failed;
+
+ err = audioservice_expect(data->server.fd, &getcaps_rsp->h, BT_GETCAPABILITIES_RSP);
+ if (err < 0)
+ goto failed;
+
+ if (getcaps_rsp->posix_errno != 0) {
+ SNDERR("BT_GETCAPABILITIES failed : %s(%d)",
+ strerror(getcaps_rsp->posix_errno),
+ getcaps_rsp->posix_errno);
+ return -getcaps_rsp->posix_errno;
+ }
+
+ data->transport = getcaps_rsp->transport;
+ data->link_mtu = getcaps_rsp->link_mtu;
+ if (getcaps_rsp->transport == BT_CAPABILITIES_TRANSPORT_A2DP)
+ data->a2dp.sbc_capabilities = getcaps_rsp->sbc_capabilities;
- return bluetooth_cfg(data, stream, conf);
+ return 0;
+
+failed:
+ bt_audio_service_close(sk);
+ return err;
}
SND_PCM_PLUGIN_DEFINE_FUNC(bluetooth)
{
struct bluetooth_data *data;
int err;
@@ -1288,26 +1317,26 @@
data->io.version = SND_PCM_IOPLUG_VERSION;
data->io.name = "Bluetooth Audio Device";
data->io.mmap_rw = 0; /* No direct mmap communication */
data->io.private_data = data;
- if (data->cfg.codec == CFG_CODEC_SBC)
+ if (data->transport == BT_CAPABILITIES_TRANSPORT_A2DP)
data->io.callback = stream == SND_PCM_STREAM_PLAYBACK ?
&bluetooth_a2dp_playback :
&bluetooth_a2dp_capture;
else
data->io.callback = stream == SND_PCM_STREAM_PLAYBACK ?
&bluetooth_hsp_playback :
&bluetooth_hsp_capture;
err = snd_pcm_ioplug_create(&data->io, name, stream, mode);
if (err < 0)
goto error;
- if (data->cfg.codec == CFG_CODEC_SBC)
+ if (data->transport == BT_CAPABILITIES_TRANSPORT_A2DP)
err = bluetooth_a2dp_hw_constraint(&data->io);
else
err = bluetooth_hsp_hw_constraint(&data->io);
if (err < 0) {
snd_pcm_ioplug_delete(&data->io);
Index: unix.c
===================================================================
--- unix.c (.../tags/20071019_1300/audio) (révision 144)
+++ unix.c (.../branches/20071019_1300/audio) (révision 144)
@@ -37,13 +37,13 @@
#include <bluetooth/sdp.h>
#include <dbus/dbus.h>
#include <glib.h>
#include "logging.h"
#include "dbus.h"
-#include "ipc.h"
+#include "btaudioservice.h"
#include "device.h"
#include "manager.h"
#include "avdtp.h"
#include "a2dp.h"
#include "headset.h"
#include "sink.h"
@@ -75,22 +75,28 @@
char *interface;
union {
struct a2dp_data a2dp;
struct headset_data hs;
} d;
int sock;
- int fd_opt;
+ int access_mode;
+ int data_fd; /* To be deleted once two phase configuration is fully implemented */
unsigned int req_id;
unsigned int cb_id;
gboolean (*cancel_stream) (struct device *dev, unsigned int id);
};
static GSList *clients = NULL;
static int unix_sock = -1;
+static void unix_ipc_sendmsg(struct unix_client *client,
+ const bt_audio_msg_header_t * msg);
+
+static void send_getcapabilities_rsp_error(struct unix_client *client, int err);
+
static void client_free(struct unix_client *client)
{
struct a2dp_data *a2dp;
switch (client->type) {
case TYPE_SINK:
@@ -189,126 +195,77 @@
break;
default:
break;
}
}
-static int unix_send_cfg(int sock, struct ipc_data_cfg *cfg, int fd)
-{
- char buf[IPC_MTU];
- struct ipc_packet *pkt = (void *) buf;
- int len, codec_len;
-
- memset(buf, 0, sizeof(buf));
-
- pkt->type = PKT_TYPE_CFG_RSP;
-
- if (!cfg) {
- pkt->error = EINVAL;
- len = send(sock, pkt, sizeof(struct ipc_packet), 0);
- if (len < 0)
- error("send: %s (%d)", strerror(errno), errno);
- return len;
- }
-
- debug("fd=%d, fd_opt=%u, pkt_len=%u, sample_size=%u, rate=%u",
- fd, cfg->fd_opt, cfg->pkt_len,
- cfg->sample_size, cfg->rate);
-
- if (cfg->codec == CFG_CODEC_SBC)
- codec_len = sizeof(struct ipc_codec_sbc);
- else
- codec_len = 0;
-
- pkt->error = PKT_ERROR_NONE;
- pkt->length = sizeof(struct ipc_data_cfg) + codec_len;
- memcpy(pkt->data, cfg, pkt->length);
-
- len = sizeof(struct ipc_packet) + pkt->length;
- len = send(sock, pkt, len, 0);
- if (len < 0)
- error("Error %s(%d)", strerror(errno), errno);
-
- debug("%d bytes sent", len);
-
- if (fd != -1) {
- len = unix_sendmsg_fd(sock, fd);
- if (len < 0)
- error("Error %s(%d)", strerror(errno), errno);
- debug("%d bytes sent", len);
- }
-
- return 0;
-}
-
static void headset_setup_complete(struct device *dev, void *user_data)
{
struct unix_client *client = user_data;
- struct ipc_data_cfg cfg;
+ char buf[BT_AUDIO_IPC_PACKET_SIZE];
+ struct bt_getcapabilities_rsp *rsp = (void *) buf;
struct headset_data *hs = &client->d.hs;
- int fd;
client->req_id = 0;
if (!dev) {
- unix_send_cfg(client->sock, NULL, -1);
+ send_getcapabilities_rsp_error(client, EIO);
client->dev = NULL;
return;
}
- switch (client->fd_opt) {
- case CFG_FD_OPT_READ:
+ switch (client->access_mode) {
+ case BT_CAPABILITIES_ACCESS_MODE_READ:
hs->lock = HEADSET_LOCK_READ;
break;
- case CFG_FD_OPT_WRITE:
+ case BT_CAPABILITIES_ACCESS_MODE_WRITE:
hs->lock = HEADSET_LOCK_WRITE;
break;
- case CFG_FD_OPT_READWRITE:
+ case BT_CAPABILITIES_ACCESS_MODE_READWRITE:
hs->lock = HEADSET_LOCK_READ | HEADSET_LOCK_WRITE;
break;
default:
hs->lock = 0;
break;
}
if (!headset_lock(dev, hs->lock)) {
error("Unable to lock headset");
- unix_send_cfg(client->sock, NULL, -1);
+ send_getcapabilities_rsp_error(client, EIO);
client->dev = NULL;
return;
}
- memset(&cfg, 0, sizeof(cfg));
-
- cfg.fd_opt = client->fd_opt;
- cfg.codec = CFG_CODEC_SCO;
- cfg.mode = CFG_MODE_MONO;
- cfg.pkt_len = 48;
- cfg.sample_size = 2;
- cfg.rate = 8000;
+ memset(buf, 0, sizeof(buf));
- fd = headset_get_sco_fd(dev);
+ rsp->h.msg_type = BT_GETCAPABILITIES_RSP;
+ rsp->transport = BT_CAPABILITIES_TRANSPORT_SCO;
+ rsp->access_mode = client->access_mode;
+ rsp->link_mtu = 48;
+ rsp->sampling_rate = 8000;
+
+ client->data_fd = headset_get_sco_fd(dev);
- unix_send_cfg(client->sock, &cfg, fd);
+ unix_ipc_sendmsg(client, &rsp->h);
}
static void a2dp_setup_complete(struct avdtp *session, struct a2dp_sep *sep,
struct avdtp_stream *stream,
void *user_data, struct avdtp_error *err)
{
struct unix_client *client = user_data;
- char buf[sizeof(struct ipc_data_cfg) + sizeof(struct ipc_codec_sbc)];
- struct ipc_data_cfg *cfg = (void *) buf;
+ char buf[BT_AUDIO_IPC_PACKET_SIZE];
+ struct bt_getcapabilities_rsp *rsp = (void *) buf;
struct avdtp_service_capability *cap;
struct avdtp_media_codec_capability *codec_cap;
struct sbc_codec_cap *sbc_cap;
- struct ipc_codec_sbc *sbc = (void *) cfg->data;
struct a2dp_data *a2dp = &client->d.a2dp;
- int fd;
GSList *caps;
+ memset(buf, 0, sizeof(buf));
+
client->req_id = 0;
if (!stream)
goto failed;
if (!a2dp_sep_lock(sep, session)) {
@@ -316,13 +273,13 @@
goto failed;
}
a2dp->sep = sep;
a2dp->stream = stream;
- if (!avdtp_stream_get_transport(stream, &fd, &cfg->pkt_len, &caps)) {
+ if (!avdtp_stream_get_transport(stream, &client->data_fd, &rsp->link_mtu, &caps)) {
error("Unable to get stream transport");
goto failed;
}
for (codec_cap = NULL; caps; caps = g_slist_next(caps)) {
cap = caps->data;
@@ -335,83 +292,45 @@
if (codec_cap == NULL ||
codec_cap->media_codec_type != A2DP_CODEC_SBC) {
error("Unable to find matching codec capability");
goto failed;
}
- cfg->fd_opt = CFG_FD_OPT_WRITE;
+ rsp->h.msg_type = BT_GETCAPABILITIES_RSP;
+ rsp->transport = BT_CAPABILITIES_TRANSPORT_A2DP;
+ client->access_mode = BT_CAPABILITIES_ACCESS_MODE_WRITE;
+ rsp->access_mode = client->access_mode;
+ /* rsp->link_mtu = already set (see above) */
sbc_cap = (void *) codec_cap;
- cfg->sample_size = 2;
- switch (sbc_cap->channel_mode) {
- case A2DP_CHANNEL_MODE_MONO:
- cfg->mode = CFG_MODE_MONO;
- break;
- case A2DP_CHANNEL_MODE_DUAL_CHANNEL:
- cfg->mode = CFG_MODE_DUAL_CHANNEL;
- break;
- case A2DP_CHANNEL_MODE_STEREO:
- cfg->mode = CFG_MODE_STEREO;
- break;
- case A2DP_CHANNEL_MODE_JOINT_STEREO:
- cfg->mode = CFG_MODE_JOINT_STEREO;
- break;
- }
+ /* assignations below are ok as soon as newipc.h and a2dp.h are kept in sync */
+ /* However it is not possible to cast a struct to another due to endianess issues */
+ rsp->sbc_capabilities.channel_mode = sbc_cap->channel_mode;
+ rsp->sbc_capabilities.frequency = sbc_cap->frequency;
+ rsp->sbc_capabilities.allocation_method = sbc_cap->allocation_method;
+ rsp->sbc_capabilities.subbands = sbc_cap->subbands;
+ rsp->sbc_capabilities.block_length = sbc_cap->block_length;
+ /* FIXME */
+ rsp->sbc_capabilities.min_bitpool = sbc_cap->max_bitpool;
+ rsp->sbc_capabilities.max_bitpool = sbc_cap->max_bitpool;
- switch (sbc_cap->frequency) {
- case A2DP_SAMPLING_FREQ_16000:
- cfg->rate = 16000;
- break;
- case A2DP_SAMPLING_FREQ_32000:
- cfg->rate = 32000;
- break;
- case A2DP_SAMPLING_FREQ_44100:
- cfg->rate = 44100;
- break;
- case A2DP_SAMPLING_FREQ_48000:
- cfg->rate = 48000;
- break;
- }
-
- cfg->codec = CFG_CODEC_SBC;
- sbc->allocation = sbc_cap->allocation_method == A2DP_ALLOCATION_SNR ?
- 0x01 : 0x00;
- sbc->subbands = sbc_cap->subbands == A2DP_SUBBANDS_4 ? 4 : 8;
-
- switch (sbc_cap->block_length) {
- case A2DP_BLOCK_LENGTH_4:
- sbc->blocks = 4;
- break;
- case A2DP_BLOCK_LENGTH_8:
- sbc->blocks = 8;
- break;
- case A2DP_BLOCK_LENGTH_12:
- sbc->blocks = 12;
- break;
- case A2DP_BLOCK_LENGTH_16:
- sbc->blocks = 16;
- break;
- }
-
- sbc->bitpool = sbc_cap->max_bitpool;
-
- unix_send_cfg(client->sock, cfg, fd);
+ unix_ipc_sendmsg(client, &rsp->h);
client->cb_id = avdtp_stream_add_cb(session, stream,
stream_state_changed, client);
return;
failed:
error("stream setup failed");
if (a2dp->sep) {
a2dp_sep_unlock(a2dp->sep, a2dp->session);
a2dp->sep = NULL;
}
- unix_send_cfg(client->sock, NULL, -1);
+ send_getcapabilities_rsp_error(client, EIO);
avdtp_unref(a2dp->session);
a2dp->session = NULL;
a2dp->stream = NULL;
}
@@ -462,149 +381,73 @@
client->req_id = id;
client->dev = dev;
return;
failed:
- unix_send_cfg(client->sock, NULL, -1);
+ send_getcapabilities_rsp_error(client, EIO);
}
static void create_cb(struct device *dev, void *user_data)
{
struct unix_client *client = user_data;
if (!dev)
- unix_send_cfg(client->sock, NULL, -1);
+ send_getcapabilities_rsp_error(client, EIO);
else
create_stream(dev, client);
}
-static int cfg_to_caps(struct ipc_data_cfg *cfg, struct sbc_codec_cap *sbc_cap)
+static void unix_ipc_sendmsg(struct unix_client *client,
+ const bt_audio_msg_header_t * msg)
{
- struct ipc_codec_sbc *sbc = (void *) cfg->data;
-
- memset(sbc_cap, 0, sizeof(struct sbc_codec_cap));
-
- sbc_cap->cap.media_type = AVDTP_MEDIA_TYPE_AUDIO;
- sbc_cap->cap.media_codec_type = A2DP_CODEC_SBC;
-
- switch (cfg->rate) {
- case 48000:
- sbc_cap->frequency = A2DP_SAMPLING_FREQ_48000;
- break;
- case 44100:
- sbc_cap->frequency = A2DP_SAMPLING_FREQ_44100;
- break;
- case 32000:
- sbc_cap->frequency = A2DP_SAMPLING_FREQ_32000;
- break;
- case 16000:
- sbc_cap->frequency = A2DP_SAMPLING_FREQ_16000;
- break;
- default:
- sbc_cap->frequency = A2DP_SAMPLING_FREQ_44100;
- break;
- }
-
- switch (cfg->mode) {
- case CFG_MODE_MONO:
- sbc_cap->channel_mode = A2DP_CHANNEL_MODE_MONO;
- break;
- case CFG_MODE_DUAL_CHANNEL:
- sbc_cap->channel_mode = A2DP_CHANNEL_MODE_DUAL_CHANNEL;
- break;
- case CFG_MODE_STEREO:
- sbc_cap->channel_mode = A2DP_CHANNEL_MODE_STEREO;
- break;
- case CFG_MODE_JOINT_STEREO:
- sbc_cap->channel_mode = A2DP_CHANNEL_MODE_JOINT_STEREO;
- break;
- default:
- sbc_cap->channel_mode = A2DP_CHANNEL_MODE_JOINT_STEREO;
- break;
- }
-
- switch (sbc->allocation) {
- case CFG_ALLOCATION_LOUDNESS:
- sbc_cap->allocation_method = A2DP_ALLOCATION_LOUDNESS;
- break;
- case CFG_ALLOCATION_SNR:
- sbc_cap->allocation_method = A2DP_ALLOCATION_LOUDNESS;
- break;
- default:
- sbc_cap->allocation_method = A2DP_ALLOCATION_LOUDNESS;
- break;
- }
-
- switch (sbc->subbands) {
- case 8:
- sbc_cap->subbands = A2DP_SUBBANDS_8;
- break;
- case 4:
- sbc_cap->subbands = A2DP_SUBBANDS_4;
- break;
- default:
- sbc_cap->subbands = A2DP_SUBBANDS_8;
- break;
- }
-
- switch (sbc->blocks) {
- case 16:
- sbc_cap->block_length = A2DP_BLOCK_LENGTH_16;
- break;
- case 12:
- sbc_cap->block_length = A2DP_BLOCK_LENGTH_12;
- break;
- case 8:
- sbc_cap->block_length = A2DP_BLOCK_LENGTH_8;
- break;
- case 4:
- sbc_cap->block_length = A2DP_BLOCK_LENGTH_4;
- break;
- default:
- sbc_cap->block_length = A2DP_BLOCK_LENGTH_16;
- break;
+ info("Audio API: sending %s", bt_audio_strmsg[msg->msg_type]);
+ if (send(client->sock, msg, BT_AUDIO_IPC_PACKET_SIZE, 0) < 0) {
+ error("Error %s(%d)", strerror(errno), errno);
}
+}
- if (sbc->bitpool != 0) {
- if (sbc->bitpool > 250)
- return -EINVAL;
-
- sbc_cap->min_bitpool = sbc->bitpool;
- sbc_cap->max_bitpool = sbc->bitpool;
- }
+static void send_getcapabilities_rsp_error(struct unix_client *client, int err)
+{
+ char buf[BT_AUDIO_IPC_PACKET_SIZE];
+ struct bt_getcapabilities_rsp *rsp = (void *) buf;
+
+ memset(buf, 0, sizeof(buf));
+ rsp->h.msg_type = BT_GETCAPABILITIES_RSP;
+ rsp->posix_errno = err;
- return 0;
+ unix_ipc_sendmsg(client, &rsp->h);
}
+
-static void cfg_event(struct unix_client *client, struct ipc_packet *pkt, int len)
+static void handle_getcapabilities_req(struct unix_client *client,
+ struct bt_getcapabilities_req * req)
{
struct device *dev;
bdaddr_t bdaddr;
- struct ipc_data_cfg *cfg = (void *) pkt->data;
- struct sbc_codec_cap sbc_cap;
- str2ba(pkt->device, &bdaddr);
+ str2ba(req->device, &bdaddr);
- client->fd_opt = cfg->fd_opt;
+ if (!req->access_mode) {
+ send_getcapabilities_rsp_error(client, EINVAL);
+ return;
+ }
+
+ client->access_mode = req->access_mode;
if (client->interface) {
g_free(client->interface);
client->interface = NULL;
}
- if (pkt->role == PKT_ROLE_VOICE)
+ if (req->transport == BT_CAPABILITIES_TRANSPORT_SCO)
client->interface = g_strdup(AUDIO_HEADSET_INTERFACE);
- else if (pkt->role == PKT_ROLE_HIFI)
+ else if (req->transport == BT_CAPABILITIES_TRANSPORT_A2DP)
client->interface = g_strdup(AUDIO_SINK_INTERFACE);
- if (cfg_to_caps(cfg, &sbc_cap) < 0)
- goto failed;
-
- client->media_codec = avdtp_service_cap_new(AVDTP_MEDIA_CODEC,
- &sbc_cap, sizeof(sbc_cap));
+ client->media_codec = 0;
if (!manager_find_device(&bdaddr, NULL, FALSE)) {
if (!bacmp(&bdaddr, BDADDR_ANY))
goto failed;
if (!manager_create_device(&bdaddr, create_cb, client))
goto failed;
@@ -620,63 +463,86 @@
create_stream(dev, client);
return;
failed:
- unix_send_cfg(client->sock, NULL, -1);
+ send_getcapabilities_rsp_error(client, EIO);
}
-static void ctl_event(struct unix_client *client,
- struct ipc_packet *pkt, int len)
+static void handle_setconfiguration_req(struct unix_client *client,
+ struct bt_setconfiguration_req * req)
{
+ /* FIXME: for now we just blindly assume that we receive is the
+ only valid configuration sent.*/
+ char buf[BT_AUDIO_IPC_PACKET_SIZE];
+ struct bt_setconfiguration_rsp *rsp = (void *) buf;
+
+ memset(buf, 0, sizeof(buf));
+ rsp->h.msg_type = BT_SETCONFIGURATION_RSP;
+ rsp->posix_errno = 0;
+
+ unix_ipc_sendmsg(client, &rsp->h);
}
-static int reply_state(int sock, struct ipc_packet *pkt)
+static void handle_streamstart_req(struct unix_client *client,
+ struct bt_streamstart_req * req)
{
- struct ipc_data_state *state = (struct ipc_data_state *) pkt->data;
- int len;
+ /* FIXME : to be really implemented */
+ char buf[BT_AUDIO_IPC_PACKET_SIZE];
+ struct bt_streamstart_rsp *rsp = (void *) buf;
+ struct bt_datafd_ind *ind = (void *) buf;
+
+ memset(buf, 0, sizeof(buf));
+ rsp->h.msg_type = BT_STREAMSTART_RSP;
+ rsp->posix_errno = 0;
+ unix_ipc_sendmsg(client, &rsp->h);
+
+ memset(buf, 0, sizeof(buf));
+ ind->h.msg_type = BT_STREAMFD_IND;
+ unix_ipc_sendmsg(client, &ind->h);
- info("status=%u", state->state);
+ if (unix_sendmsg_fd(client->sock, client->data_fd) < 0)
+ error("unix_sendmsg_fd: %s(%d)", strerror(errno), errno);
- pkt->type = PKT_TYPE_STATE_RSP;
- pkt->length = sizeof(struct ipc_data_state);
- pkt->error = PKT_ERROR_NONE;
-
- len = sizeof(struct ipc_packet) + sizeof(struct ipc_data_state);
- len = send(sock, pkt, len, 0);
- if (len < 0)
- error("Error %s(%d)", strerror(errno), errno);
+}
- debug("%d bytes sent", len);
+static void handle_streamstop_req(struct unix_client *client,
+ struct bt_streamstop_req * req)
+{
+ /* FIXME : to be implemented */
+ char buf[BT_AUDIO_IPC_PACKET_SIZE];
+ struct bt_streamstop_rsp *rsp = (void *) buf;
+
+ memset(buf, 0, sizeof(buf));
+ rsp->h.msg_type = BT_STREAMSTOP_RSP;
+ rsp->posix_errno = 0;
- return 0;
+ unix_ipc_sendmsg(client, &rsp->h);
}
-static void state_event(struct unix_client *client,
- struct ipc_packet *pkt, int len)
+static void handle_control_req(struct unix_client *client,
+ struct bt_control_req * req)
{
-#if 0
- struct ipc_data_state *state = (struct ipc_data_state *) pkt->data;
- struct device *dev = client->dev;
-
- if (len > sizeof(struct ipc_packet))
- device_set_state(dev, state->state);
- else
- state->state = device_get_state(dev);
-#endif
+ /* FIXME: really implement that */
+ char buf[BT_AUDIO_IPC_PACKET_SIZE];
+ struct bt_setconfiguration_rsp *rsp = (void *) buf;
+
+ memset(buf, 0, sizeof(buf));
+ rsp->h.msg_type = BT_CONTROL_RSP;
+ rsp->posix_errno = 0;
- reply_state(client->sock, pkt);
+ unix_ipc_sendmsg(client, &rsp->h);
}
static gboolean client_cb(GIOChannel *chan, GIOCondition cond, gpointer data)
{
- char buf[IPC_MTU];
- struct ipc_packet *pkt = (void *) buf;
+ char buf[BT_AUDIO_IPC_PACKET_SIZE];
+ bt_audio_msg_header_t *msghdr = (void *) buf;
struct unix_client *client = data;
- int len, len_check;
+ int len;
struct a2dp_data *a2dp = &client->d.a2dp;
struct headset_data *hs = &client->d.hs;
if (cond & G_IO_NVAL)
return FALSE;
@@ -702,37 +568,45 @@
client->cancel_stream(client->dev, client->req_id);
goto failed;
}
memset(buf, 0, sizeof(buf));
- len = recv(client->sock, buf, sizeof(buf), 0);
+ len = recv(client->sock, buf, sizeof(buf), MSG_WAITALL);
if (len < 0) {
error("recv: %s (%d)", strerror(errno), errno);
goto failed;
}
- len_check = pkt->length + sizeof(struct ipc_packet);
- if (len != len_check) {
- error("Packet lenght doesn't match");
- goto failed;
+ if (msghdr->msg_type <= BT_MSG_MAX) {
+ info("Audio API: received %s", bt_audio_strmsg[msghdr->msg_type]);
}
- switch (pkt->type) {
- case PKT_TYPE_CFG_REQ:
- info("Package PKT_TYPE_CFG_REQ:%u", pkt->role);
- cfg_event(client, pkt, len);
- break;
- case PKT_TYPE_STATE_REQ:
- info("Package PKT_TYPE_STATE_REQ");
- state_event(client, pkt, len);
- break;
- case PKT_TYPE_CTL_REQ:
- info("Package PKT_TYPE_CTL_REQ");
- ctl_event(client, pkt, len);
+ switch (msghdr->msg_type) {
+ case BT_GETCAPABILITIES_REQ:
+ handle_getcapabilities_req(client,
+ (struct bt_getcapabilities_req *) msghdr);
+ break;
+ case BT_SETCONFIGURATION_REQ:
+ handle_setconfiguration_req(client,
+ (struct bt_setconfiguration_req *) msghdr);
+ break;
+ case BT_STREAMSTART_REQ:
+ handle_streamstart_req(client,
+ (struct bt_streamstart_req *) msghdr);
+ break;
+ case BT_STREAMSTOP_REQ:
+ handle_streamstop_req(client,
+ (struct bt_streamstop_req *) msghdr);
+ break;
+ case BT_CONTROL_REQ:
+ handle_control_req(client,
+ (struct bt_control_req *) msghdr);
break;
+ default:
+ error("Audio API: received unexpected packet type %d", msghdr->msg_type);
}
return TRUE;
failed:
clients = g_slist_remove(clients, client);
@@ -782,13 +656,13 @@
}
int unix_init(void)
{
GIOChannel *io;
struct sockaddr_un addr = {
- AF_UNIX, IPC_SOCKET_NAME
+ AF_UNIX, BT_IPC_SOCKET_NAME
};
int sk, err;
sk = socket(PF_LOCAL, SOCK_STREAM, 0);
if (sk < 0) {
Index: ctl_bluetooth.c
===================================================================
--- ctl_bluetooth.c (.../tags/20071019_1300/audio) (révision 144)
+++ ctl_bluetooth.c (.../branches/20071019_1300/audio) (révision 144)
@@ -30,13 +30,13 @@
#include <alsa/asoundlib.h>
#include <alsa/control_external.h>
#include <bluetooth/bluetooth.h>
-#include "ipc.h"
+#include "btaudioservice.h"
#ifdef ENABLE_DEBUG
#define DBG(fmt, arg...) printf("DEBUG: %s: " fmt "\n" , __FUNCTION__ , ## arg)
#else
#define DBG(fmt, arg...)
#endif
@@ -62,13 +62,13 @@
static void bluetooth_exit(struct bluetooth_data *data)
{
if (data == NULL)
return;
if (data->sock >= 0)
- close(data->sock);
+ bt_audio_service_close(data->sock);
free(data);
}
static void bluetooth_close(snd_ctl_ext_t *ext)
{
@@ -138,140 +138,135 @@
*imax = BLUETOOTH_MAXVOL;
return 0;
}
static int bluetooth_send_ctl(struct bluetooth_data *data,
- struct ipc_packet *pkt, int len)
+ uint8_t mode, uint8_t key, struct bt_control_rsp *ctl_rsp)
{
int ret;
+ struct bt_control_req * ctl_req = (void *) ctl_rsp;
- ret = send(data->sock, pkt, len, MSG_NOSIGNAL);
+ memset(ctl_req, 0, BT_AUDIO_IPC_PACKET_SIZE);
+ ctl_req->h.msg_type = BT_CONTROL_REQ;
+ ctl_req->mode = mode;
+ ctl_req->key = key;
+
+ ret = send(data->sock, ctl_req, BT_AUDIO_IPC_PACKET_SIZE, MSG_NOSIGNAL);
if (ret <= 0) {
SYSERR("Unable to request new volume value to server");
return -errno;
}
- ret = recv(data->sock, pkt, len, 0);
+ ret = recv(data->sock, ctl_rsp, BT_AUDIO_IPC_PACKET_SIZE, 0);
if (ret <= 0) {
- SYSERR("Unable to receive new volume value from server");
+ SNDERR("Unable to receive new volume value from server");
return -errno;
}
- if(pkt->type != PKT_TYPE_CTL_RSP) {
- SNDERR("Unexpected packet type %d received", pkt->type);
+ if (ctl_rsp->h.msg_type > BT_MSG_MAX) {
+ SNDERR("Bogus message type %d "
+ "received from audio service",
+ ctl_rsp->h.msg_type);
return -EINVAL;
}
- if(pkt->length != sizeof(struct ipc_data_ctl)) {
- SNDERR("Unexpected packet length %d received", pkt->length);
+ if (ctl_rsp->h.msg_type != BT_CONTROL_RSP) {
+ SNDERR("Unexpected message %s received",
+ bt_audio_strmsg[ctl_rsp->h.msg_type]);
return -EINVAL;
}
+ if (ctl_rsp->posix_errno != 0) {
+ SNDERR("BT_CONTROL failed : %s (%d)",
+ strerror(ctl_rsp->posix_errno),
+ ctl_rsp->posix_errno);
+ return -ctl_rsp->posix_errno;
+ }
+
return 0;
}
static int bluetooth_read_integer(snd_ctl_ext_t *ext, snd_ctl_ext_key_t key,
long *value)
{
struct bluetooth_data *data = ext->private_data;
- struct ipc_packet *pkt;
- struct ipc_data_ctl *ctl;
- int len, ret;
+ int ret;
+ char buf[BT_AUDIO_IPC_PACKET_SIZE];
+ struct bt_control_rsp *rsp = (void *) buf;
DBG("ext %p key %ld", ext, key);
- len = sizeof(struct ipc_packet) + sizeof(struct ipc_data_ctl);
- pkt = malloc(len);
- memset(pkt, 0, len);
+ memset(buf, 0, sizeof(buf));
*value = 0;
- pkt->type = PKT_TYPE_CTL_REQ;
- pkt->length = sizeof(struct ipc_data_ctl);
- ctl = (struct ipc_data_ctl *) pkt->data;
- ctl->mode = key;
-
- if ((ret = bluetooth_send_ctl(data, pkt, len)) < 0)
+ if ((ret = bluetooth_send_ctl(data, key, 0, rsp)) < 0)
goto done;
- *value = ctl->key;
+ *value = rsp->key;
done:
- free(pkt);
return ret;
}
static int bluetooth_write_integer(snd_ctl_ext_t *ext, snd_ctl_ext_key_t key,
long *value)
{
struct bluetooth_data *data = ext->private_data;
- struct ipc_packet *pkt;
- struct ipc_data_ctl *ctl;
+ char buf[BT_AUDIO_IPC_PACKET_SIZE];
+ struct bt_control_rsp *rsp = (void *) buf;
long current;
- int len, ret;
+ int ret, keyvalue;
DBG("ext %p key %ld", ext, key);
if ((ret = bluetooth_read_integer(ext, key, ¤t)) < 0)
return ret;
if (*value == current)
return 0;
- len = sizeof(struct ipc_packet) + sizeof(struct ipc_data_ctl);
- pkt = malloc(len);
- memset(pkt, 0, len);
-
- pkt->length = sizeof(struct ipc_data_ctl);
- ctl = (struct ipc_data_ctl *) pkt->data;
- ctl->mode = key;
-
while (*value != current) {
- pkt->type = PKT_TYPE_CTL_REQ;
- ctl->key = (*value > current) ? CTL_KEY_VOL_UP : CTL_KEY_VOL_DOWN;
+ keyvalue = (*value > current) ? BT_CONTROL_KEY_VOL_UP : BT_CONTROL_KEY_VOL_DOWN;
- if ((ret = bluetooth_send_ctl(data, pkt, len)) < 0)
+ if ((ret = bluetooth_send_ctl(data, key, keyvalue, rsp)) < 0)
break;
- current = ctl->key;
+ current = keyvalue;
}
- free(pkt);
return ret;
}
static int bluetooth_read_event(snd_ctl_ext_t *ext, snd_ctl_elem_id_t *id,
unsigned int *event_mask)
{
struct bluetooth_data *data = ext->private_data;
- struct ipc_packet *pkt;
- struct ipc_data_ctl *ctl;
- int len, ret;
+ char buf[BT_AUDIO_IPC_PACKET_SIZE];
+ struct bt_control_ind *ind = (void *) buf;
+ int ret;
DBG("ext %p id %p", ext, id);
- len = sizeof(struct ipc_packet) + sizeof(struct ipc_data_ctl);
- pkt = malloc(len);
- memset(pkt, 0, len);
-
- ret = recv(data->sock, pkt, len, MSG_DONTWAIT);
- if (ret <= 0)
- return -errno;
+ memset(buf, 0, sizeof(buf));
- if(pkt->type != PKT_TYPE_CTL_NTFY) {
- SNDERR("Unexpected packet type %d received!", pkt->type);
+ ret = recv(data->sock, ind, BT_AUDIO_IPC_PACKET_SIZE, MSG_DONTWAIT);
+ if (ind->h.msg_type > BT_MSG_MAX) {
+ SNDERR("Bogus message type %d "
+ "received from audio service",
+ ind->h.msg_type);
return -EAGAIN;
}
- if(pkt->length != sizeof(struct ipc_data_ctl)) {
- SNDERR("Unexpected packet length %d received", pkt->length);
+ if (ind->h.msg_type != BT_CONTROL_IND) {
+ SNDERR("Unexpected message %s received",
+ bt_audio_strmsg[ind->h.msg_type]);
return -EAGAIN;
}
- ctl = (struct ipc_data_ctl *) pkt->data;
snd_ctl_elem_id_set_interface(id, SND_CTL_ELEM_IFACE_MIXER);
- snd_ctl_elem_id_set_name(id, ctl->mode == BLUETOOTH_PLAYBACK ?
+ snd_ctl_elem_id_set_name(id, ind->mode == BLUETOOTH_PLAYBACK ?
vol_devices[BLUETOOTH_PLAYBACK] :
vol_devices[BLUETOOTH_CAPTURE]);
*event_mask = SND_CTL_EVENT_MASK_VALUE;
return 1;
}
@@ -287,40 +282,25 @@
.write_integer = bluetooth_write_integer,
.read_event = bluetooth_read_event,
};
static int bluetooth_init(struct bluetooth_data *data)
{
- int sk, err, id;
- struct sockaddr_un addr = {
- AF_UNIX, IPC_SOCKET_NAME
- };
+ int sk;
if (!data)
return -EINVAL;
memset(data, 0, sizeof(struct bluetooth_data));
data->sock = -1;
- id = abs(getpid() * rand());
-
- if ((sk = socket(PF_LOCAL, SOCK_STREAM, 0)) < 0) {
- err = -errno;
- SNDERR("Can't open socket");
+ if ((sk = bt_audio_service_open()) < 0) {
return -errno;
}
- DBG("Connecting to address: %s", addr.sun_path + 1);
- if (connect(sk, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
- err = -errno;
- SNDERR("Can't connect socket");
- close(sk);
- return err;
- }
-
data->sock = sk;
return 0;
}
SND_CTL_PLUGIN_DEFINE_FUNC(bluetooth)
Index: btaudioservice.c
===================================================================
--- btaudioservice.c (.../tags/20071019_1300/audio) (révision 0)
+++ btaudioservice.c (.../branches/20071019_1300/audio) (révision 144)
@@ -0,0 +1,91 @@
+/*
+ *
+ * BlueZ - Bluetooth protocol stack for Linux
+ *
+ * Copyright (C) 2004-2007 Marcel Holtmann <[email protected]>
+ *
+ * This library 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 2.1 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ */
+
+#include <btaudioservice.h>
+
+int bt_audio_service_open()
+{
+ int sk;
+ int err;
+ struct sockaddr_un addr = {
+ AF_UNIX, BT_IPC_SOCKET_NAME
+ };
+
+ sk = socket(PF_LOCAL, SOCK_STREAM, 0);
+ if (sk < 0) {
+ err = errno;
+ fprintf(stderr, "%s: Cannot open socket: %s (%d)\n", __FUNCTION__, strerror(err), err);
+ errno = err;
+ return -1;
+ }
+
+ if (connect(sk, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
+ err = errno;
+ fprintf(stderr, "%s: connect() failed: %s (%d)\n", __FUNCTION__, strerror(err), err);
+ close(sk);
+ errno = err;
+ return -1;
+ }
+
+ return sk;
+}
+
+int bt_audio_service_close(int sk)
+{
+ return close(sk);
+}
+
+int bt_audio_service_get_data_fd(int sk)
+{
+ char cmsg_b[CMSG_SPACE(sizeof(int))], m;
+ int err, ret;
+ struct iovec iov = { &m, sizeof(m) };
+ struct msghdr msgh;
+ struct cmsghdr *cmsg;
+
+ memset(&msgh, 0, sizeof(msgh));
+ msgh.msg_iov = &iov;
+ msgh.msg_iovlen = 1;
+ msgh.msg_control = &cmsg_b;
+ msgh.msg_controllen = CMSG_LEN(sizeof(int));
+
+ ret = recvmsg(sk, &msgh, 0);
+ if (ret < 0) {
+ err = errno;
+ fprintf(stderr, "%s: Unable to receive fd: %s (%d)\n", __FUNCTION__, strerror(err), err);
+ errno = err;
+ return -1;
+ }
+
+ /* Receive auxiliary data in msgh */
+ for (cmsg = CMSG_FIRSTHDR(&msgh); cmsg != NULL;
+ cmsg = CMSG_NXTHDR(&msgh, cmsg)) {
+ if (cmsg->cmsg_level == SOL_SOCKET
+ && cmsg->cmsg_type == SCM_RIGHTS) {
+ return (*(int *) CMSG_DATA(cmsg));
+ }
+ }
+
+ errno = EINVAL;
+ return -1;
+}
+
Index: btaudioservice.h
===================================================================
--- btaudioservice.h (.../tags/20071019_1300/audio) (révision 0)
+++ btaudioservice.h (.../branches/20071019_1300/audio) (révision 144)
@@ -0,0 +1,304 @@
+/*
+ *
+ * BlueZ - Bluetooth protocol stack for Linux
+ *
+ * Copyright (C) 2004-2007 Marcel Holtmann <[email protected]>
+ *
+ * This library 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 2.1 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ */
+
+/*
+ Message sequence chart of streaming sequence for A2DP transport
+
+ Audio daemon User
+ on snd_pcm_open
+ <--BT_GETCAPABILITIES_REQ
+
+ BT_GETCAPABILITIES_RSP-->
+
+ on snd_pcm_hw_params
+ <--BT_SETCONFIGURATION_REQ
+
+ BT_SETCONFIGURATION_RSP-->
+
+ on snd_pcm_prepare
+ <--BT_STREAMSTART_REQ
+
+ <Moves to streaming state>
+ BT_STREAMSTART_RSP-->
+
+ BT_STREAMFD_IND -->
+
+ < streams data >
+ ..........
+
+ on snd_pcm_drop/snd_pcm_drain
+
+ <--BT_STREAMSTOP_REQ
+
+ <Moves to open state>
+ BT_STREAMSTOP_RSP-->
+
+ on IPC close or appl crash
+ <Moves to idle>
+
+ */
+
+#ifndef BTAUDIOSERVICE_H
+#define BTAUDIOSERVICE_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stdint.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+#include <errno.h>
+
+#define BT_AUDIO_IPC_PACKET_SIZE 128
+#define BT_IPC_SOCKET_NAME "\0/org/bluez/audio"
+
+/* Generic message header definition */
+typedef struct {
+ uint8_t msg_type;
+} __attribute__ ((packed)) bt_audio_msg_header_t;
+
+/* Messages list */
+#define BT_GETCAPABILITIES_REQ 0
+#define BT_GETCAPABILITIES_RSP 1
+
+#define BT_SETCONFIGURATION_REQ 2
+#define BT_SETCONFIGURATION_RSP 3
+
+#define BT_STREAMSTART_REQ 4
+#define BT_STREAMSTART_RSP 5
+
+#define BT_STREAMSTOP_REQ 6
+#define BT_STREAMSTOP_RSP 7
+
+#define BT_STREAMSUSPEND_IND 8
+#define BT_STREAMRESUME_IND 9
+
+#define BT_CONTROL_REQ 10
+#define BT_CONTROL_RSP 11
+#define BT_CONTROL_IND 12
+
+#define BT_STREAMFD_IND 13
+
+/* This table contains the string representation for messages above */
+static const char * bt_audio_strmsg[] = {
+ "BT_GETCAPABILITIES_REQ",
+ "BT_GETCAPABILITIES_RSP",
+ "BT_SETCONFIGURATION_REQ",
+ "BT_SETCONFIGURATION_RSP",
+ "BT_STREAMSTART_REQ",
+ "BT_STREAMSTART_RSP",
+ "BT_STREAMSTOP_REQ",
+ "BT_STREAMSTOP_RSP",
+ "BT_STREAMSUSPEND_IND",
+ "BT_STREAMRESUME_IND",
+ "BT_CONTROL_REQ",
+ "BT_CONTROL_RSP",
+ "BT_CONTROL_IND",
+ "BT_STREAMFD_IND",
+};
+
+#define BT_MSG_MAX ((sizeof(bt_audio_strmsg) / sizeof(char*)) -1)
+
+/* BT_GETCAPABILITIES_REQ */
+
+#define BT_CAPABILITIES_TRANSPORT_A2DP 0
+#define BT_CAPABILITIES_TRANSPORT_SCO 1
+#define BT_CAPABILITIES_TRANSPORT_ANY 2
+
+#define BT_CAPABILITIES_ACCESS_MODE_READ 1
+#define BT_CAPABILITIES_ACCESS_MODE_WRITE 2
+#define BT_CAPABILITIES_ACCESS_MODE_READWRITE 3
+
+struct bt_getcapabilities_req {
+ bt_audio_msg_header_t h;
+ char device[18]; /* Address of the remote Device */
+ uint8_t transport; /* Requested transport */
+ uint8_t access_mode; /* Requested access mode */
+} __attribute__ ((packed));
+
+/* BT_GETCAPABILITIES_RSP */
+
+/**
+ * SBC Codec parameters as per A2DP profile 1.0 § 4.3
+ */
+
+#define BT_A2DP_SAMPLING_FREQ_16000 (1 << 3)
+#define BT_A2DP_SAMPLING_FREQ_32000 (1 << 2)
+#define BT_A2DP_SAMPLING_FREQ_44100 (1 << 1)
+#define BT_A2DP_SAMPLING_FREQ_48000 1
+
+#define BT_A2DP_CHANNEL_MODE_MONO (1 << 3)
+#define BT_A2DP_CHANNEL_MODE_DUAL_CHANNEL (1 << 2)
+#define BT_A2DP_CHANNEL_MODE_STEREO (1 << 1)
+#define BT_A2DP_CHANNEL_MODE_JOINT_STEREO 1
+#define BT_A2DP_CHANNEL_MODE_MONO_AUTO 0
+
+#define BT_A2DP_BLOCK_LENGTH_4 (1 << 3)
+#define BT_A2DP_BLOCK_LENGTH_8 (1 << 2)
+#define BT_A2DP_BLOCK_LENGTH_12 (1 << 1)
+#define BT_A2DP_BLOCK_LENGTH_16 1
+
+#define BT_A2DP_SUBBANDS_4 (1 << 1)
+#define BT_A2DP_SUBBANDS_8 1
+
+#define BT_A2DP_ALLOCATION_SNR (1 << 1)
+#define BT_A2DP_ALLOCATION_LOUDNESS 1
+#define BT_A2DP_ALLOCATION_AUTO 0
+
+typedef struct {
+ uint8_t channel_mode;
+ uint8_t frequency;
+ uint8_t allocation_method;
+ uint8_t subbands;
+ uint8_t block_length;
+ uint8_t min_bitpool;
+ uint8_t max_bitpool;
+} __attribute__ ((packed)) SBC_capabilities_t;
+
+/* To be defined */
+typedef struct {
+} __attribute__ ((packed)) MPEG_capabilities_t;
+
+struct bt_getcapabilities_rsp {
+ bt_audio_msg_header_t h;
+ uint8_t posix_errno;
+ uint8_t transport; /* Granted transport */
+ uint8_t access_mode; /* Granted access mode */
+ uint16_t link_mtu; /* Max length that transport supports */
+ SBC_capabilities_t sbc_capabilities; /* A2DP only */
+ MPEG_capabilities_t mpeg_capabilities; /* A2DP only */
+ uint16_t sampling_rate; /* SCO only */
+} __attribute__ ((packed));
+
+/* BT_SETCONFIGURATION_REQ */
+struct bt_setconfiguration_req {
+ bt_audio_msg_header_t h;
+ SBC_capabilities_t sbc_capabilities; /* A2DP only - only one of this field
+ and next one must be filled */
+ MPEG_capabilities_t mpeg_capabilities; /* A2DP only */
+} __attribute__ ((packed));
+
+/* BT_SETCONFIGURATION_RSP */
+struct bt_setconfiguration_rsp {
+ bt_audio_msg_header_t h;
+ uint8_t posix_errno;
+} __attribute__ ((packed));
+
+/* BT_STREAMSTART_REQ */
+#define BT_STREAM_ACCESS_READ 0
+#define BT_STREAM_ACCESS_WRITE 1
+#define BT_STREAM_ACCESS_READWRITE 2
+struct bt_streamstart_req {
+ bt_audio_msg_header_t h;
+} __attribute__ ((packed));
+
+/* BT_STREAMSTART_RSP */
+struct bt_streamstart_rsp {
+ bt_audio_msg_header_t h;
+ uint8_t posix_errno;
+} __attribute__ ((packed));
+
+/* BT_STREAMFD_IND */
+/* This message is followed by one byte of data containing the stream data fd
+ as ancilliary data */
+struct bt_datafd_ind {
+ bt_audio_msg_header_t h;
+} __attribute__ ((packed));
+
+/* BT_STREAMSTOP_REQ */
+struct bt_streamstop_req {
+ bt_audio_msg_header_t h;
+} __attribute__ ((packed));
+
+/* BT_STREAMSTOP_RSP */
+struct bt_streamstop_rsp {
+ bt_audio_msg_header_t h;
+ uint8_t posix_errno;
+} __attribute__ ((packed));
+
+/* BT_STREAMSUSPEND_IND */
+struct bt_streamsuspend_ind {
+ bt_audio_msg_header_t h;
+} __attribute__ ((packed));
+
+/* BT_STREAMRESUME_IND */
+struct bt_streamresume_ind {
+ bt_audio_msg_header_t h;
+} __attribute__ ((packed));
+
+/* BT_CONTROL_REQ */
+
+#define BT_CONTROL_KEY_POWER 0x40
+#define BT_CONTROL_KEY_VOL_UP 0x41
+#define BT_CONTROL_KEY_VOL_DOWN 0x42
+#define BT_CONTROL_KEY_MUTE 0x43
+#define BT_CONTROL_KEY_PLAY 0x44
+#define BT_CONTROL_KEY_STOP 0x45
+#define BT_CONTROL_KEY_PAUSE 0x46
+#define BT_CONTROL_KEY_RECORD 0x47
+#define BT_CONTROL_KEY_REWIND 0x48
+#define BT_CONTROL_KEY_FAST_FORWARD 0x49
+#define BT_CONTROL_KEY_EJECT 0x4A
+#define BT_CONTROL_KEY_FORWARD 0x4B
+#define BT_CONTROL_KEY_BACKWARD 0x4C
+
+struct bt_control_req {
+ bt_audio_msg_header_t h;
+ uint8_t mode; /* Control Mode */
+ uint8_t key; /* Control Key */
+} __attribute__ ((packed));
+
+/* BT_CONTROL_RSP */
+struct bt_control_rsp {
+ bt_audio_msg_header_t h;
+ uint8_t posix_errno;
+ uint8_t mode; /* Control Mode */
+ uint8_t key; /* Control Key */
+} __attribute__ ((packed));
+
+/* BT_CONTROL_IND */
+struct bt_control_ind {
+ bt_audio_msg_header_t h;
+ uint8_t mode; /* Control Mode */
+ uint8_t key; /* Control Key */
+} __attribute__ ((packed));
+
+/* Function declaration */
+
+/* Opens a connection to the audio service: return a socket descriptor */
+int bt_audio_service_open();
+
+/* Closes a connection to the audio service */
+int bt_audio_service_close(int sk);
+
+/* Receives stream data file descriptor : must be called after a
+BT_STREAMFD_IND message is returned */
+int bt_audio_service_get_data_fd(int sk);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* BTAUDIOSERVICE_H */
Index: Makefile.am
===================================================================
--- Makefile.am (.../tags/20071019_1300/audio) (révision 144)
+++ Makefile.am (.../branches/20071019_1300/audio) (révision 144)
@@ -20,18 +20,18 @@
if ALSA
alsadir = $(libdir)/alsa-lib
alsa_LTLIBRARIES = libasound_module_pcm_bluetooth.la libasound_module_ctl_bluetooth.la
-libasound_module_pcm_bluetooth_la_SOURCES = pcm_bluetooth.c ipc.h
+libasound_module_pcm_bluetooth_la_SOURCES = pcm_bluetooth.c btaudioservice.h btaudioservice.c
libasound_module_pcm_bluetooth_la_LDFLAGS = -module -avoid-version -export-symbols-regex [_]*snd_pcm_.*
libasound_module_pcm_bluetooth_la_LIBADD = @SBC_LIBS@ @ALSA_LIBS@
libasound_module_pcm_bluetooth_la_CFLAGS = @ALSA_CFLAGS@ @SBC_CFLAGS@
-libasound_module_ctl_bluetooth_la_SOURCES = ctl_bluetooth.c ipc.h
+libasound_module_ctl_bluetooth_la_SOURCES = ctl_bluetooth.c btaudioservice.h btaudioservice.c
libasound_module_ctl_bluetooth_la_LDFLAGS = -module -avoid-version -export-symbols-regex [_]*snd_ctl_.*
libasound_module_ctl_bluetooth_la_LIBADD = @ALSA_LIBS@
libasound_module_ctl_bluetooth_la_CFLAGS = @ALSA_CFLAGS@
endif
if GSTREAMER