diff options
Diffstat (limited to 'audio/unix.c')
| -rw-r--r-- | audio/unix.c | 1917 |
1 files changed, 1917 insertions, 0 deletions
diff --git a/audio/unix.c b/audio/unix.c new file mode 100644 index 0000000..37c772d --- /dev/null +++ b/audio/unix.c @@ -0,0 +1,1917 @@ +/* + * + * BlueZ - Bluetooth protocol stack for Linux + * + * Copyright (C) 2006-2010 Nokia Corporation + * Copyright (C) 2004-2010 Marcel Holtmann <marcel@holtmann.org> + * + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + * + */ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif + +#include <stdio.h> +#include <fcntl.h> +#include <sys/socket.h> +#include <sys/un.h> +#include <stdlib.h> +#include <errno.h> +#include <unistd.h> +#include <stdint.h> + +#include <bluetooth/bluetooth.h> +#include <bluetooth/sdp.h> +#include <dbus/dbus.h> +#include <glib.h> + +#include "log.h" +#include "ipc.h" +#include "device.h" +#include "manager.h" +#include "avdtp.h" +#include "media.h" +#include "a2dp.h" +#include "headset.h" +#include "sink.h" +#include "gateway.h" +#include "unix.h" +#include "glib-helper.h" + +#define check_nul(str) (str[sizeof(str) - 1] == '\0') + +typedef enum { + TYPE_NONE, + TYPE_HEADSET, + TYPE_GATEWAY, + TYPE_SINK, + TYPE_SOURCE +} service_type_t; + +typedef void (*notify_cb_t) (struct audio_device *dev, void *data); + +struct a2dp_data { + struct avdtp *session; + struct avdtp_stream *stream; + struct a2dp_sep *sep; +}; + +struct headset_data { + gboolean locked; +}; + +struct unix_client { + struct audio_device *dev; + GSList *caps; + service_type_t type; + char *interface; + uint8_t seid; + union { + struct a2dp_data a2dp; + struct headset_data hs; + } d; + int sock; + int lock; + int data_fd; /* To be deleted once two phase configuration is fully implemented */ + unsigned int req_id; + unsigned int cb_id; + gboolean (*cancel) (struct audio_device *dev, unsigned int id); +}; + +static GSList *clients = NULL; + +static int unix_sock = -1; + +static void client_free(struct unix_client *client) +{ + DBG("client_free(%p)", client); + + if (client->cancel && client->dev && client->req_id > 0) + client->cancel(client->dev, client->req_id); + + if (client->sock >= 0) + close(client->sock); + + if (client->caps) { + g_slist_foreach(client->caps, (GFunc) g_free, NULL); + g_slist_free(client->caps); + } + + g_free(client->interface); + g_free(client); +} + +static int set_nonblocking(int fd) +{ + long arg; + + arg = fcntl(fd, F_GETFL); + if (arg < 0) + return -errno; + + /* Return if already nonblocking */ + if (arg & O_NONBLOCK) + return 0; + + arg |= O_NONBLOCK; + if (fcntl(fd, F_SETFL, arg) < 0) + return -errno; + + return 0; +} + +/* Pass file descriptor through local domain sockets (AF_LOCAL, formerly + * AF_UNIX) and the sendmsg() system call with the cmsg_type field of a "struct + * cmsghdr" set to SCM_RIGHTS and the data being an integer value equal to the + * handle of the file descriptor to be passed. */ +static int unix_sendmsg_fd(int sock, int fd) +{ + char cmsg_b[CMSG_SPACE(sizeof(int))], m = 'm'; + struct cmsghdr *cmsg; + struct iovec iov = { &m, sizeof(m) }; + struct msghdr msgh; + + 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)); + + cmsg = CMSG_FIRSTHDR(&msgh); + cmsg->cmsg_level = SOL_SOCKET; + cmsg->cmsg_type = SCM_RIGHTS; + cmsg->cmsg_len = CMSG_LEN(sizeof(int)); + /* Initialize the payload */ + memcpy(CMSG_DATA(cmsg), &fd, sizeof(int)); + + return sendmsg(sock, &msgh, MSG_NOSIGNAL); +} + +static void unix_ipc_sendmsg(struct unix_client *client, + const bt_audio_msg_header_t *msg) +{ + const char *type = bt_audio_strtype(msg->type); + const char *name = bt_audio_strname(msg->name); + + DBG("Audio API: %s -> %s", type, name); + + if (send(client->sock, msg, msg->length, 0) < 0) + error("Error %s(%d)", strerror(errno), errno); +} + +static void unix_ipc_error(struct unix_client *client, uint8_t name, int err) +{ + char buf[BT_SUGGESTED_BUFFER_SIZE]; + bt_audio_error_t *rsp = (void *) buf; + + if (!g_slist_find(clients, client)) + return; + + memset(buf, 0, sizeof(buf)); + rsp->h.type = BT_ERROR; + rsp->h.name = name; + rsp->h.length = sizeof(*rsp); + + rsp->posix_errno = err; + + DBG("sending error %s(%d)", strerror(err), err); + unix_ipc_sendmsg(client, &rsp->h); +} + +static service_type_t select_service(struct audio_device *dev, const char *interface) +{ + if (!interface) { + if (dev->sink && avdtp_is_connected(&dev->src, &dev->dst)) + return TYPE_SINK; + else if (dev->source && avdtp_is_connected(&dev->src, + &dev->dst)) + return TYPE_SOURCE; + else if (dev->headset && headset_is_active(dev)) + return TYPE_HEADSET; + else if (dev->sink) + return TYPE_SINK; + else if (dev->source) + return TYPE_SOURCE; + else if (dev->headset) + return TYPE_HEADSET; + } else if (!strcmp(interface, AUDIO_SOURCE_INTERFACE) && dev->source) + return TYPE_SOURCE; + else if (!strcmp(interface, AUDIO_SINK_INTERFACE) && dev->sink) + return TYPE_SINK; + else if (!strcmp(interface, AUDIO_HEADSET_INTERFACE) && dev->headset) + return TYPE_HEADSET; + else if (!strcmp(interface, AUDIO_GATEWAY_INTERFACE) && dev->gateway) + return TYPE_GATEWAY; + + return TYPE_NONE; +} + +static void stream_state_changed(struct avdtp_stream *stream, + avdtp_state_t old_state, + avdtp_state_t new_state, + struct avdtp_error *err, + void *user_data) +{ + struct unix_client *client = user_data; + struct a2dp_data *a2dp = &client->d.a2dp; + + switch (new_state) { + case AVDTP_STATE_IDLE: + if (a2dp->sep) { + a2dp_sep_unlock(a2dp->sep, a2dp->session); + a2dp->sep = NULL; + } + if (a2dp->session) { + avdtp_unref(a2dp->session); + a2dp->session = NULL; + } + a2dp->stream = NULL; + client->cb_id = 0; + break; + default: + break; + } +} + +static uint8_t headset_generate_capability(struct audio_device *dev, + codec_capabilities_t *codec) +{ + pcm_capabilities_t *pcm; + + codec->seid = BT_A2DP_SEID_RANGE + 1; + codec->transport = BT_CAPABILITIES_TRANSPORT_SCO; + codec->type = BT_HFP_CODEC_PCM; + codec->length = sizeof(*pcm); + + pcm = (void *) codec; + pcm->sampling_rate = 8000; + if (dev->headset) { + if (headset_get_nrec(dev)) + pcm->flags |= BT_PCM_FLAG_NREC; + if (!headset_get_sco_hci(dev)) + pcm->flags |= BT_PCM_FLAG_PCM_ROUTING; + codec->configured = headset_is_active(dev); + codec->lock = headset_get_lock(dev); + } else { + pcm->flags |= BT_PCM_FLAG_NREC; + codec->configured = TRUE; + codec->lock = 0; + } + + return codec->length; +} + +static void headset_discovery_complete(struct audio_device *dev, void *user_data) +{ + struct unix_client *client = user_data; + char buf[BT_SUGGESTED_BUFFER_SIZE]; + struct bt_get_capabilities_rsp *rsp = (void *) buf; + uint8_t length; + + client->req_id = 0; + + if (!dev) + goto failed; + + memset(buf, 0, sizeof(buf)); + + length = headset_generate_capability(dev, (void *) rsp->data); + + rsp->h.type = BT_RESPONSE; + rsp->h.name = BT_GET_CAPABILITIES; + rsp->h.length = sizeof(*rsp) + length; + + ba2str(&dev->src, rsp->source); + ba2str(&dev->dst, rsp->destination); + strncpy(rsp->object, dev->path, sizeof(rsp->object)); + + unix_ipc_sendmsg(client, &rsp->h); + + return; + +failed: + error("discovery failed"); + unix_ipc_error(client, BT_SET_CONFIGURATION, EIO); +} + +static void headset_setup_complete(struct audio_device *dev, void *user_data) +{ + struct unix_client *client = user_data; + char buf[BT_SUGGESTED_BUFFER_SIZE]; + struct bt_set_configuration_rsp *rsp = (void *) buf; + + client->req_id = 0; + + if (!dev) + goto failed; + + memset(buf, 0, sizeof(buf)); + + rsp->h.type = BT_RESPONSE; + rsp->h.name = BT_SET_CONFIGURATION; + rsp->h.length = sizeof(*rsp); + + rsp->link_mtu = 48; + + client->data_fd = headset_get_sco_fd(dev); + + unix_ipc_sendmsg(client, &rsp->h); + + return; + +failed: + error("config failed"); + unix_ipc_error(client, BT_SET_CONFIGURATION, EIO); +} + +static void gateway_setup_complete(struct audio_device *dev, GError *err, void *user_data) +{ + struct unix_client *client = user_data; + char buf[BT_SUGGESTED_BUFFER_SIZE]; + struct bt_set_configuration_rsp *rsp = (void *) buf; + + if (err) { + unix_ipc_error(client, BT_SET_CONFIGURATION, err->code); + return; + } + + client->req_id = 0; + + memset(buf, 0, sizeof(buf)); + + rsp->h.type = BT_RESPONSE; + rsp->h.name = BT_SET_CONFIGURATION; + rsp->h.length = sizeof(*rsp); + + rsp->link_mtu = 48; + + client->data_fd = gateway_get_sco_fd(dev); + + unix_ipc_sendmsg(client, &rsp->h); +} + +static void headset_resume_complete(struct audio_device *dev, void *user_data) +{ + struct unix_client *client = user_data; + char buf[BT_SUGGESTED_BUFFER_SIZE]; + struct bt_start_stream_rsp *rsp = (void *) buf; + struct bt_new_stream_ind *ind = (void *) buf; + + client->req_id = 0; + + if (!dev) + goto failed; + + client->data_fd = headset_get_sco_fd(dev); + if (client->data_fd < 0) { + error("Unable to get a SCO fd"); + goto failed; + } + + memset(buf, 0, sizeof(buf)); + rsp->h.type = BT_RESPONSE; + rsp->h.name = BT_START_STREAM; + rsp->h.length = sizeof(*rsp); + + unix_ipc_sendmsg(client, &rsp->h); + + memset(buf, 0, sizeof(buf)); + ind->h.type = BT_INDICATION; + ind->h.name = BT_NEW_STREAM; + ind->h.length = sizeof(*ind); + + unix_ipc_sendmsg(client, &ind->h); + + if (unix_sendmsg_fd(client->sock, client->data_fd) < 0) { + error("unix_sendmsg_fd: %s(%d)", strerror(errno), errno); + goto failed; + } + + return; + +failed: + error("headset_resume_complete: resume failed"); + unix_ipc_error(client, BT_START_STREAM, EIO); +} + +static void gateway_resume_complete(struct audio_device *dev, GError *err, void *user_data) +{ + struct unix_client *client = user_data; + char buf[BT_SUGGESTED_BUFFER_SIZE]; + struct bt_start_stream_rsp *rsp = (void *) buf; + struct bt_new_stream_ind *ind = (void *) buf; + + if (err) { + unix_ipc_error(client, BT_START_STREAM, err->code); + return; + } + + memset(buf, 0, sizeof(buf)); + rsp->h.type = BT_RESPONSE; + rsp->h.name = BT_START_STREAM; + rsp->h.length = sizeof(*rsp); + + unix_ipc_sendmsg(client, &rsp->h); + + memset(buf, 0, sizeof(buf)); + ind->h.type = BT_INDICATION; + ind->h.name = BT_NEW_STREAM; + ind->h.length = sizeof(*ind); + + unix_ipc_sendmsg(client, &ind->h); + + client->data_fd = gateway_get_sco_fd(dev); + if (unix_sendmsg_fd(client->sock, client->data_fd) < 0) { + error("unix_sendmsg_fd: %s(%d)", strerror(errno), errno); + unix_ipc_error(client, BT_START_STREAM, EIO); + } + + client->req_id = 0; +} + +static void headset_suspend_complete(struct audio_device *dev, void *user_data) +{ + struct unix_client *client = user_data; + char buf[BT_SUGGESTED_BUFFER_SIZE]; + struct bt_stop_stream_rsp *rsp = (void *) buf; + + if (!dev) + goto failed; + + memset(buf, 0, sizeof(buf)); + rsp->h.type = BT_RESPONSE; + rsp->h.name = BT_STOP_STREAM; + rsp->h.length = sizeof(*rsp); + + unix_ipc_sendmsg(client, &rsp->h); + + return; + +failed: + error("suspend failed"); + unix_ipc_error(client, BT_STOP_STREAM, EIO); +} + +static void print_mpeg12(struct mpeg_codec_cap *mpeg) +{ + DBG("Media Codec: MPEG12" + " Channel Modes: %s%s%s%s" + " Frequencies: %s%s%s%s%s%s" + " Layers: %s%s%s" + " CRC: %s", + mpeg->channel_mode & MPEG_CHANNEL_MODE_MONO ? "Mono " : "", + mpeg->channel_mode & MPEG_CHANNEL_MODE_DUAL_CHANNEL ? + "DualChannel " : "", + mpeg->channel_mode & MPEG_CHANNEL_MODE_STEREO ? "Stereo " : "", + mpeg->channel_mode & MPEG_CHANNEL_MODE_JOINT_STEREO ? + "JointStereo " : "", + mpeg->frequency & MPEG_SAMPLING_FREQ_16000 ? "16Khz " : "", + mpeg->frequency & MPEG_SAMPLING_FREQ_22050 ? "22.05Khz " : "", + mpeg->frequency & MPEG_SAMPLING_FREQ_24000 ? "24Khz " : "", + mpeg->frequency & MPEG_SAMPLING_FREQ_32000 ? "32Khz " : "", + mpeg->frequency & MPEG_SAMPLING_FREQ_44100 ? "44.1Khz " : "", + mpeg->frequency & MPEG_SAMPLING_FREQ_48000 ? "48Khz " : "", + mpeg->layer & MPEG_LAYER_MP1 ? "1 " : "", + mpeg->layer & MPEG_LAYER_MP2 ? "2 " : "", + mpeg->layer & MPEG_LAYER_MP3 ? "3 " : "", + mpeg->crc ? "Yes" : "No"); +} + +static void print_sbc(struct sbc_codec_cap *sbc) +{ + DBG("Media Codec: SBC" + " Channel Modes: %s%s%s%s" + " Frequencies: %s%s%s%s" + " Subbands: %s%s" + " Blocks: %s%s%s%s" + " Bitpool: %d-%d", + sbc->channel_mode & SBC_CHANNEL_MODE_MONO ? "Mono " : "", + sbc->channel_mode & SBC_CHANNEL_MODE_DUAL_CHANNEL ? + "DualChannel " : "", + sbc->channel_mode & SBC_CHANNEL_MODE_STEREO ? "Stereo " : "", + sbc->channel_mode & SBC_CHANNEL_MODE_JOINT_STEREO ? "JointStereo" : "", + sbc->frequency & SBC_SAMPLING_FREQ_16000 ? "16Khz " : "", + sbc->frequency & SBC_SAMPLING_FREQ_32000 ? "32Khz " : "", + sbc->frequency & SBC_SAMPLING_FREQ_44100 ? "44.1Khz " : "", + sbc->frequency & SBC_SAMPLING_FREQ_48000 ? "48Khz " : "", + sbc->subbands & SBC_SUBBANDS_4 ? "4 " : "", + sbc->subbands & SBC_SUBBANDS_8 ? "8 " : "", + sbc->block_length & SBC_BLOCK_LENGTH_4 ? "4 " : "", + sbc->block_length & SBC_BLOCK_LENGTH_8 ? "8 " : "", + sbc->block_length & SBC_BLOCK_LENGTH_12 ? "12 " : "", + sbc->block_length & SBC_BLOCK_LENGTH_16 ? "16 " : "", + sbc->min_bitpool, sbc->max_bitpool); +} + +static int a2dp_append_codec(struct bt_get_capabilities_rsp *rsp, + struct avdtp_service_capability *cap, + uint8_t seid, + uint8_t type, + uint8_t configured, + uint8_t lock) +{ + struct avdtp_media_codec_capability *codec_cap = (void *) cap->data; + codec_capabilities_t *codec = (void *) rsp + rsp->h.length; + size_t space_left; + + if (rsp->h.length > BT_SUGGESTED_BUFFER_SIZE) + return -ENOMEM; + + space_left = BT_SUGGESTED_BUFFER_SIZE - rsp->h.length; + + /* endianess prevent direct cast */ + if (codec_cap->media_codec_type == A2DP_CODEC_SBC) { + struct sbc_codec_cap *sbc_cap = (void *) codec_cap; + sbc_capabilities_t *sbc = (void *) codec; + + if (space_left < sizeof(sbc_capabilities_t)) + return -ENOMEM; + + if (type == AVDTP_SEP_TYPE_SINK) + codec->type = BT_A2DP_SBC_SINK; + else if (type == AVDTP_SEP_TYPE_SOURCE) + codec->type = BT_A2DP_SBC_SOURCE; + else + return -EINVAL; + + codec->length = sizeof(sbc_capabilities_t); + + sbc->channel_mode = sbc_cap->channel_mode; + sbc->frequency = sbc_cap->frequency; + sbc->allocation_method = sbc_cap->allocation_method; + sbc->subbands = sbc_cap->subbands; + sbc->block_length = sbc_cap->block_length; + sbc->min_bitpool = sbc_cap->min_bitpool; + sbc->max_bitpool = sbc_cap->max_bitpool; + + print_sbc(sbc_cap); + } else if (codec_cap->media_codec_type == A2DP_CODEC_MPEG12) { + struct mpeg_codec_cap *mpeg_cap = (void *) codec_cap; + mpeg_capabilities_t *mpeg = (void *) codec; + + if (space_left < sizeof(mpeg_capabilities_t)) + return -ENOMEM; + + if (type == AVDTP_SEP_TYPE_SINK) + codec->type = BT_A2DP_MPEG12_SINK; + else if (type == AVDTP_SEP_TYPE_SOURCE) + codec->type = BT_A2DP_MPEG12_SOURCE; + else + return -EINVAL; + + codec->length = sizeof(mpeg_capabilities_t); + + mpeg->channel_mode = mpeg_cap->channel_mode; + mpeg->crc = mpeg_cap->crc; + mpeg->layer = mpeg_cap->layer; + mpeg->frequency = mpeg_cap->frequency; + mpeg->mpf = mpeg_cap->mpf; + mpeg->bitrate = mpeg_cap->bitrate; + + print_mpeg12(mpeg_cap); + } else { + size_t codec_length, type_length, total_length; + + codec_length = cap->length - (sizeof(struct avdtp_service_capability) + + sizeof(struct avdtp_media_codec_capability)); + type_length = sizeof(codec_cap->media_codec_type); + total_length = type_length + codec_length + + sizeof(codec_capabilities_t); + + if (space_left < total_length) + return -ENOMEM; + + if (type == AVDTP_SEP_TYPE_SINK) + codec->type = BT_A2DP_UNKNOWN_SINK; + else if (type == AVDTP_SEP_TYPE_SOURCE) + codec->type = BT_A2DP_UNKNOWN_SOURCE; + else + return -EINVAL; + + codec->length = total_length; + memcpy(codec->data, &codec_cap->media_codec_type, type_length); + memcpy(codec->data + type_length, codec_cap->data, + codec_length); + } + + codec->seid = seid; + codec->configured = configured; + codec->lock = lock; + rsp->h.length += codec->length; + + DBG("Append %s seid %d - length %d - total %d", + configured ? "configured" : "", seid, codec->length, + rsp->h.length); + + return 0; +} + +static void a2dp_discovery_complete(struct avdtp *session, GSList *seps, + struct avdtp_error *err, + void *user_data) +{ + struct unix_client *client = user_data; + char buf[BT_SUGGESTED_BUFFER_SIZE]; + struct bt_get_capabilities_rsp *rsp = (void *) buf; + struct a2dp_data *a2dp = &client->d.a2dp; + GSList *l; + + if (!g_slist_find(clients, client)) { + DBG("Client disconnected during discovery"); + return; + } + + if (err) + goto failed; + + memset(buf, 0, sizeof(buf)); + client->req_id = 0; + + rsp->h.type = BT_RESPONSE; + rsp->h.name = BT_GET_CAPABILITIES; + rsp->h.length = sizeof(*rsp); + ba2str(&client->dev->src, rsp->source); + ba2str(&client->dev->dst, rsp->destination); + strncpy(rsp->object, client->dev->path, sizeof(rsp->object)); + + for (l = seps; l; l = g_slist_next(l)) { + struct avdtp_remote_sep *rsep = l->data; + struct a2dp_sep *sep; + struct avdtp_service_capability *cap; + struct avdtp_stream *stream; + uint8_t type, seid, configured = 0, lock = 0; + GSList *cl; + + type = avdtp_get_type(rsep); + + if (type != AVDTP_SEP_TYPE_SINK && + type != AVDTP_SEP_TYPE_SOURCE) + continue; + + cap = avdtp_get_codec(rsep); + + if (cap->category != AVDTP_MEDIA_CODEC) + continue; + + seid = avdtp_get_seid(rsep); + + if (client->seid != 0 && client->seid != seid) + continue; + + stream = avdtp_get_stream(rsep); + if (stream) { + configured = 1; + if (client->seid == seid) + cap = avdtp_stream_get_codec(stream); + } + + for (cl = clients; cl; cl = cl->next) { + struct unix_client *c = cl->data; + struct a2dp_data *ca2dp = &c->d.a2dp; + + if (ca2dp->session == session && c->seid == seid) { + lock = c->lock; + break; + } + } + + sep = a2dp_get_sep(session, stream); + if (sep && a2dp_sep_get_lock(sep)) + lock = BT_WRITE_LOCK; + + a2dp_append_codec(rsp, cap, seid, type, configured, lock); + } + + unix_ipc_sendmsg(client, &rsp->h); + + return; + +failed: + error("discovery failed"); + unix_ipc_error(client, BT_GET_CAPABILITIES, EIO); + + if (a2dp->sep) { + a2dp_sep_unlock(a2dp->sep, a2dp->session); + a2dp->sep = NULL; + } + + avdtp_unref(a2dp->session); + a2dp->session = NULL; + a2dp->stream = NULL; +} + +static void a2dp_config_complete(struct avdtp *session, struct a2dp_sep *sep, + struct avdtp_stream *stream, + struct avdtp_error *err, + void *user_data) +{ + struct unix_client *client = user_data; + char buf[BT_SUGGESTED_BUFFER_SIZE]; + struct bt_set_configuration_rsp *rsp = (void *) buf; + struct a2dp_data *a2dp = &client->d.a2dp; + uint16_t imtu, omtu; + GSList *caps; + + client->req_id = 0; + + if (err) + goto failed; + + memset(buf, 0, sizeof(buf)); + + if (!stream) + goto failed; + + if (client->cb_id > 0) + avdtp_stream_remove_cb(a2dp->session, a2dp->stream, + client->cb_id); + + a2dp->sep = sep; + a2dp->stream = stream; + + if (!avdtp_stream_get_transport(stream, &client->data_fd, &imtu, &omtu, + &caps)) { + error("Unable to get stream transport"); + goto failed; + } + + rsp->h.type = BT_RESPONSE; + rsp->h.name = BT_SET_CONFIGURATION; + rsp->h.length = sizeof(*rsp); + + /* FIXME: Use imtu when fd_opt is CFG_FD_OPT_READ */ + rsp->link_mtu = omtu; + + unix_ipc_sendmsg(client, &rsp->h); + + client->cb_id = avdtp_stream_add_cb(session, stream, + stream_state_changed, client); + + return; + +failed: + error("config failed"); + + unix_ipc_error(client, BT_SET_CONFIGURATION, EIO); + + avdtp_unref(a2dp->session); + + a2dp->session = NULL; + a2dp->stream = NULL; + a2dp->sep = NULL; +} + +static void a2dp_resume_complete(struct avdtp *session, + struct avdtp_error *err, void *user_data) +{ + struct unix_client *client = user_data; + char buf[BT_SUGGESTED_BUFFER_SIZE]; + struct bt_start_stream_rsp *rsp = (void *) buf; + struct bt_new_stream_ind *ind = (void *) buf; + struct a2dp_data *a2dp = &client->d.a2dp; + + if (err) + goto failed; + + memset(buf, 0, sizeof(buf)); + rsp->h.type = BT_RESPONSE; + rsp->h.name = BT_START_STREAM; + rsp->h.length = sizeof(*rsp); + + unix_ipc_sendmsg(client, &rsp->h); + + memset(buf, 0, sizeof(buf)); + ind->h.type = BT_RESPONSE; + ind->h.name = BT_NEW_STREAM; + rsp->h.length = sizeof(*ind); + + unix_ipc_sendmsg(client, &ind->h); + + if (unix_sendmsg_fd(client->sock, client->data_fd) < 0) { + error("unix_sendmsg_fd: %s(%d)", strerror(errno), errno); + goto failed; + } + + return; + +failed: + error("resume failed"); + + unix_ipc_error(client, BT_START_STREAM, EIO); + + if (client->cb_id > 0) { + avdtp_stream_remove_cb(a2dp->session, a2dp->stream, + client->cb_id); + client->cb_id = 0; + } + + if (a2dp->sep) { + a2dp_sep_unlock(a2dp->sep, a2dp->session); + a2dp->sep = NULL; + } + + avdtp_unref(a2dp->session); + a2dp->session = NULL; + a2dp->stream = NULL; +} + +static void a2dp_suspend_complete(struct avdtp *session, + struct avdtp_error *err, void *user_data) +{ + struct unix_client *client = user_data; + char buf[BT_SUGGESTED_BUFFER_SIZE]; + struct bt_stop_stream_rsp *rsp = (void *) buf; + + if (err) + goto failed; + + memset(buf, 0, sizeof(buf)); + rsp->h.type = BT_RESPONSE; + rsp->h.name = BT_STOP_STREAM; + rsp->h.length = sizeof(*rsp); + + unix_ipc_sendmsg(client, &rsp->h); + + return; + +failed: + error("suspend failed"); + + unix_ipc_error(client, BT_STOP_STREAM, EIO); +} + +static void start_discovery(struct audio_device *dev, struct unix_client *client) +{ + struct a2dp_data *a2dp; + int err = 0; + + switch (client->type) { + case TYPE_SINK: + case TYPE_SOURCE: + a2dp = &client->d.a2dp; + + if (!a2dp->session) + a2dp->session = avdtp_get(&dev->src, &dev->dst); + + if (!a2dp->session) { + error("Unable to get a session"); + goto failed; + } + + err = avdtp_discover(a2dp->session, a2dp_discovery_complete, + client); + if (err) { + if (a2dp->session) { + avdtp_unref(a2dp->session); + a2dp->session = NULL; + } + goto failed; + } + break; + + case TYPE_HEADSET: + case TYPE_GATEWAY: + headset_discovery_complete(dev, client); + break; + + default: + error("No known services for device"); + goto failed; + } + + client->dev = dev; + + return; + +failed: + unix_ipc_error(client, BT_GET_CAPABILITIES, err ? : EIO); +} + +static void open_complete(struct audio_device *dev, void *user_data) +{ + struct unix_client *client = user_data; + char buf[BT_SUGGESTED_BUFFER_SIZE]; + struct bt_open_rsp *rsp = (void *) buf; + + memset(buf, 0, sizeof(buf)); + + rsp->h.type = BT_RESPONSE; + rsp->h.name = BT_OPEN; + rsp->h.length = sizeof(*rsp); + + ba2str(&dev->src, rsp->source); + ba2str(&dev->dst, rsp->destination); + strncpy(rsp->object, dev->path, sizeof(rsp->object)); + + unix_ipc_sendmsg(client, &rsp->h); +} + +static void start_open(struct audio_device *dev, struct unix_client *client) +{ + struct a2dp_data *a2dp; + struct headset_data *hs; + struct avdtp_remote_sep *rsep; + gboolean unref_avdtp_on_fail = FALSE; + + switch (client->type) { + case TYPE_SINK: + case TYPE_SOURCE: + a2dp = &client->d.a2dp; + + if (!a2dp->session) { + a2dp->session = avdtp_get(&dev->src, &dev->dst); + unref_avdtp_on_fail = TRUE; + } + + if (!a2dp->session) { + error("Unable to get a session"); + goto failed; + } + + if (a2dp->sep) { + error("Client already has an opened session"); + goto failed; + } + + rsep = avdtp_get_remote_sep(a2dp->session, client->seid); + if (!rsep) { + error("Invalid seid %d", client->seid); + goto failed; + } + + a2dp->sep = a2dp_get(a2dp->session, rsep); + if (!a2dp->sep) { + error("seid %d not available or locked", client->seid); + goto failed; + } + + if (!a2dp_sep_lock(a2dp->sep, a2dp->session)) { + error("Unable to open seid %d", client->seid); + a2dp->sep = NULL; + goto failed; + } + + break; + + case TYPE_HEADSET: + hs = &client->d.hs; + + if (hs->locked) { + error("Client already has an opened session"); + goto failed; + } + + hs->locked = headset_lock(dev, client->lock); + if (!hs->locked) { + error("Unable to open seid %d", client->seid); + goto failed; + } + break; + + case TYPE_GATEWAY: + break; + default: + error("No known services for device"); + goto failed; + } + + client->dev = dev; + + open_complete(dev, client); + + return; + +failed: + if (unref_avdtp_on_fail && a2dp->session) { + avdtp_unref(a2dp->session); + a2dp->session = NULL; + } + unix_ipc_error(client, BT_OPEN, EINVAL); +} + +static void start_config(struct audio_device *dev, struct unix_client *client) +{ + struct a2dp_data *a2dp; + struct headset_data *hs; + unsigned int id; + + switch (client->type) { + case TYPE_SINK: + case TYPE_SOURCE: + a2dp = &client->d.a2dp; + + if (!a2dp->session) + a2dp->session = avdtp_get(&dev->src, &dev->dst); + + if (!a2dp->session) { + error("Unable to get a session"); + goto failed; + } + + if (!a2dp->sep) { + error("seid %d not opened", client->seid); + goto failed; + } + + id = a2dp_config(a2dp->session, a2dp->sep, a2dp_config_complete, + client->caps, client); + client->cancel = a2dp_cancel; + break; + + case TYPE_HEADSET: + hs = &client->d.hs; + + if (!hs->locked) { + error("seid %d not opened", client->seid); + goto failed; + } + + id = headset_config_stream(dev, TRUE, headset_setup_complete, + client); + client->cancel = headset_cancel_stream; + break; + case TYPE_GATEWAY: + if (gateway_config_stream(dev, gateway_setup_complete, client) >= 0) { + client->cancel = gateway_cancel_stream; + id = 1; + } else + id = 0; + break; + + default: + error("No known services for device"); + goto failed; + } + + if (id == 0) { + error("config failed"); + goto failed; + } + + client->req_id = id; + g_slist_free(client->caps); + client->caps = NULL; + + return; + +failed: + unix_ipc_error(client, BT_SET_CONFIGURATION, EIO); +} + +static void start_resume(struct audio_device *dev, struct unix_client *client) +{ + struct a2dp_data *a2dp = NULL; + struct headset_data *hs; + unsigned int id; + struct avdtp *session = NULL; + + switch (client->type) { + case TYPE_SINK: + case TYPE_SOURCE: + a2dp = &client->d.a2dp; + + if (!a2dp->sep) { + error("seid not opened"); + goto failed; + } + + if (!a2dp->session) { + session = avdtp_get(&dev->src, &dev->dst); + if (!session) { + error("Unable to get a session"); + goto failed; + } + a2dp->session = session; + } + + id = a2dp_resume(a2dp->session, a2dp->sep, a2dp_resume_complete, + client); + client->cancel = a2dp_cancel; + + break; + + case TYPE_HEADSET: + hs = &client->d.hs; + + if (!hs->locked) { + error("seid not opened"); + goto failed; + } + + id = headset_request_stream(dev, headset_resume_complete, + client); + client->cancel = headset_cancel_stream; + break; + + case TYPE_GATEWAY: + if (gateway_request_stream(dev, gateway_resume_complete, client)) + id = 1; + else + id = 0; + client->cancel = gateway_cancel_stream; + break; + + default: + error("No known services for device"); + goto failed; + } + + if (id == 0) { + error("start_resume: resume failed"); + goto failed; + } + + client->req_id = id; + + return; + +failed: + if (session) { + avdtp_unref(session); + a2dp->session = NULL; + } + + unix_ipc_error(client, BT_START_STREAM, EIO); +} + +static void start_suspend(struct audio_device *dev, struct unix_client *client) +{ + struct a2dp_data *a2dp = NULL; + struct headset_data *hs; + unsigned int id; + struct avdtp *session = NULL; + + switch (client->type) { + case TYPE_SINK: + case TYPE_SOURCE: + a2dp = &client->d.a2dp; + + if (!a2dp->sep) { + error("seid not opened"); + goto failed; + } + + if (!a2dp->session) { + session = avdtp_get(&dev->src, &dev->dst); + if (!session) { + error("Unable to get a session"); + goto failed; + } + a2dp->session = session; + } + + if (!a2dp->sep) { + error("Unable to get a sep"); + goto failed; + } + + id = a2dp_suspend(a2dp->session, a2dp->sep, + a2dp_suspend_complete, client); + client->cancel = a2dp_cancel; + break; + + case TYPE_HEADSET: + hs = &client->d.hs; + + if (!hs->locked) { + error("seid not opened"); + goto failed; + } + + id = headset_suspend_stream(dev, headset_suspend_complete, + client); + client->cancel = headset_cancel_stream; + break; + + case TYPE_GATEWAY: + gateway_suspend_stream(dev); + client->cancel = gateway_cancel_stream; + headset_suspend_complete(dev, client); + id = 1; + break; + + default: + error("No known services for device"); + goto failed; + } + + if (id == 0) { + error("suspend failed"); + goto failed; + } + + return; + +failed: + if (session) { + avdtp_unref(session); + a2dp->session = NULL; + } + + unix_ipc_error(client, BT_STOP_STREAM, EIO); +} + +static void close_complete(struct audio_device *dev, void *user_data) +{ + struct unix_client *client = user_data; + char buf[BT_SUGGESTED_BUFFER_SIZE]; + struct bt_close_rsp *rsp = (void *) buf; + + memset(buf, 0, sizeof(buf)); + + rsp->h.type = BT_RESPONSE; + rsp->h.name = BT_CLOSE; + rsp->h.length = sizeof(*rsp); + + unix_ipc_sendmsg(client, &rsp->h); + + return; +} + +static void start_close(struct audio_device *dev, struct unix_client *client, + gboolean reply) +{ + struct a2dp_data *a2dp; + struct headset_data *hs; + + if (!client->dev) + goto failed; + + switch (client->type) { + case TYPE_HEADSET: + hs = &client->d.hs; + + if (client->dev && hs->locked) { + headset_unlock(client->dev, client->lock); + hs->locked = FALSE; + } + break; + case TYPE_GATEWAY: + break; + case TYPE_SOURCE: + case TYPE_SINK: + a2dp = &client->d.a2dp; + + if (client->cb_id > 0) { + avdtp_stream_remove_cb(a2dp->session, a2dp->stream, + client->cb_id); + client->cb_id = 0; + } + if (a2dp->sep) { + a2dp_sep_unlock(a2dp->sep, a2dp->session); + a2dp->sep = NULL; + } + if (a2dp->session) { + avdtp_unref(a2dp->session); + a2dp->session = NULL; + } + a2dp->stream = NULL; + break; + default: + error("No known services for device"); + goto failed; + } + + if (!reply) + return; + + close_complete(dev, client); + client->dev = NULL; + + return; + +failed: + if (reply) + unix_ipc_error(client, BT_STOP_STREAM, EINVAL); +} + +static void handle_getcapabilities_req(struct unix_client *client, + struct bt_get_capabilities_req *req) +{ + struct audio_device *dev; + bdaddr_t src, dst; + int err = EIO; + const char *interface; + + if (!check_nul(req->source) || !check_nul(req->destination) || + !check_nul(req->object)) { + err = EINVAL; + goto failed; + } + + str2ba(req->source, &src); + str2ba(req->destination, &dst); + + if (!manager_find_device(req->object, &src, &dst, NULL, FALSE)) + goto failed; + + if (req->transport == BT_CAPABILITIES_TRANSPORT_SCO) + interface = AUDIO_HEADSET_INTERFACE; + else if (req->transport == BT_CAPABILITIES_TRANSPORT_A2DP) + interface = AUDIO_SINK_INTERFACE; + else + interface = client->interface; + + dev = manager_find_device(req->object, &src, &dst, interface, TRUE); + if (!dev && (req->flags & BT_FLAG_AUTOCONNECT)) + dev = manager_find_device(req->object, &src, &dst, + interface, FALSE); + + if (!dev) { + if (req->transport == BT_CAPABILITIES_TRANSPORT_SCO) + interface = AUDIO_GATEWAY_INTERFACE; + else if (req->transport == BT_CAPABILITIES_TRANSPORT_A2DP) + interface = AUDIO_SOURCE_INTERFACE; + else + interface = NULL; + dev = manager_find_device(req->object, &src, &dst, + interface, TRUE); + if (!dev && (req->flags & BT_FLAG_AUTOCONNECT)) + dev = manager_find_device(req->object, &src, &dst, + interface, FALSE); + } + + if (!dev) { + error("Unable to find a matching device"); + goto failed; + } + + client->type = select_service(dev, interface); + if (client->type == TYPE_NONE) { + error("No matching service found"); + goto failed; + } + + if (g_strcmp0(interface, client->interface) != 0) { + g_free(client->interface); + client->interface = g_strdup(interface); + } + + client->seid = req->seid; + + start_discovery(dev, client); + + return; + +failed: + unix_ipc_error(client, BT_GET_CAPABILITIES, err); +} + +static int handle_sco_open(struct unix_client *client, struct bt_open_req *req) +{ + if (!client->interface) + client->interface = g_strdup(AUDIO_HEADSET_INTERFACE); + else if (!g_str_equal(client->interface, AUDIO_HEADSET_INTERFACE) && + !g_str_equal(client->interface, AUDIO_GATEWAY_INTERFACE)) + return -EIO; + + DBG("open sco - object=%s source=%s destination=%s lock=%s%s", + strcmp(req->object, "") ? req->object : "ANY", + strcmp(req->source, "") ? req->source : "ANY", + strcmp(req->destination, "") ? req->destination : "ANY", + req->lock & BT_READ_LOCK ? "read" : "", + req->lock & BT_WRITE_LOCK ? "write" : ""); + + return 0; +} + +static int handle_a2dp_open(struct unix_client *client, struct bt_open_req *req) +{ + if (!client->interface) + /* FIXME: are we treating a sink or a source? */ + client->interface = g_strdup(AUDIO_SINK_INTERFACE); + else if (!g_str_equal(client->interface, AUDIO_SINK_INTERFACE) && + !g_str_equal(client->interface, AUDIO_SOURCE_INTERFACE)) + return -EIO; + + DBG("open a2dp - object=%s source=%s destination=%s lock=%s%s", + strcmp(req->object, "") ? req->object : "ANY", + strcmp(req->source, "") ? req->source : "ANY", + strcmp(req->destination, "") ? req->destination : "ANY", + req->lock & BT_READ_LOCK ? "read" : "", + req->lock & BT_WRITE_LOCK ? "write" : ""); + + return 0; +} + +static void handle_open_req(struct unix_client *client, struct bt_open_req *req) +{ + struct audio_device *dev; + bdaddr_t src, dst; + int err = 0; + + if (!check_nul(req->source) || !check_nul(req->destination) || + !check_nul(req->object)) { + err = EINVAL; + goto failed; + } + + str2ba(req->source, &src); + str2ba(req->destination, &dst); + + if (req->seid > BT_A2DP_SEID_RANGE) { + err = handle_sco_open(client, req); + if (err < 0) { + err = -err; + goto failed; + } + } else { + err = handle_a2dp_open(client, req); + if (err < 0) { + err = -err; + goto failed; + } + } + + if (!manager_find_device(req->object, &src, &dst, NULL, FALSE)) + goto failed; + + dev = manager_find_device(req->object, &src, &dst, client->interface, + TRUE); + if (!dev) + dev = manager_find_device(req->object, &src, &dst, + client->interface, FALSE); + + if (!dev) + goto failed; + + client->seid = req->seid; + client->lock = req->lock; + + start_open(dev, client); + + return; + +failed: + unix_ipc_error(client, BT_OPEN, err ? : EIO); +} + +static int handle_sco_transport(struct unix_client *client, + struct bt_set_configuration_req *req) +{ + struct audio_device *dev = client->dev; + + if (!client->interface) { + if (dev->headset) + client->interface = g_strdup(AUDIO_HEADSET_INTERFACE); + else if (dev->gateway) + client->interface = g_strdup(AUDIO_GATEWAY_INTERFACE); + else + return -EIO; + } else if (!g_str_equal(client->interface, AUDIO_HEADSET_INTERFACE) && + !g_str_equal(client->interface, AUDIO_GATEWAY_INTERFACE)) + return -EIO; + + return 0; +} + +static int handle_a2dp_transport(struct unix_client *client, + struct bt_set_configuration_req *req) +{ + struct avdtp_service_capability *media_transport, *media_codec; + struct sbc_codec_cap sbc_cap; + struct mpeg_codec_cap mpeg_cap; + + if (!client->interface) + /* FIXME: are we treating a sink or a source? */ + client->interface = g_strdup(AUDIO_SINK_INTERFACE); + else if (!g_str_equal(client->interface, AUDIO_SINK_INTERFACE) && + !g_str_equal(client->interface, AUDIO_SOURCE_INTERFACE)) + return -EIO; + + if (client->caps) { + g_slist_foreach(client->caps, (GFunc) g_free, NULL); + g_slist_free(client->caps); + client->caps = NULL; + } + + media_transport = avdtp_service_cap_new(AVDTP_MEDIA_TRANSPORT, + NULL, 0); + + client->caps = g_slist_append(client->caps, media_transport); + + if (req->codec.type == BT_A2DP_MPEG12_SINK || + req->codec.type == BT_A2DP_MPEG12_SOURCE) { + mpeg_capabilities_t *mpeg = (void *) &req->codec; + + memset(&mpeg_cap, 0, sizeof(mpeg_cap)); + + mpeg_cap.cap.media_type = AVDTP_MEDIA_TYPE_AUDIO; + mpeg_cap.cap.media_codec_type = A2DP_CODEC_MPEG12; + mpeg_cap.channel_mode = mpeg->channel_mode; + mpeg_cap.crc = mpeg->crc; + mpeg_cap.layer = mpeg->layer; + mpeg_cap.frequency = mpeg->frequency; + mpeg_cap.mpf = mpeg->mpf; + mpeg_cap.bitrate = mpeg->bitrate; + + media_codec = avdtp_service_cap_new(AVDTP_MEDIA_CODEC, &mpeg_cap, + sizeof(mpeg_cap)); + + print_mpeg12(&mpeg_cap); + } else if (req->codec.type == BT_A2DP_SBC_SINK || + req->codec.type == BT_A2DP_SBC_SOURCE) { + sbc_capabilities_t *sbc = (void *) &req->codec; + + memset(&sbc_cap, 0, sizeof(sbc_cap)); + + sbc_cap.cap.media_type = AVDTP_MEDIA_TYPE_AUDIO; + sbc_cap.cap.media_codec_type = A2DP_CODEC_SBC; + sbc_cap.channel_mode = sbc->channel_mode; + sbc_cap.frequency = sbc->frequency; + sbc_cap.allocation_method = sbc->allocation_method; + sbc_cap.subbands = sbc->subbands; + sbc_cap.block_length = sbc->block_length; + sbc_cap.min_bitpool = sbc->min_bitpool; + sbc_cap.max_bitpool = sbc->max_bitpool; + + media_codec = avdtp_service_cap_new(AVDTP_MEDIA_CODEC, &sbc_cap, + sizeof(sbc_cap)); + + print_sbc(&sbc_cap); + } else + return -EINVAL; + + client->caps = g_slist_append(client->caps, media_codec); + + return 0; +} + +static void handle_setconfiguration_req(struct unix_client *client, + struct bt_set_configuration_req *req) +{ + int err = 0; + + if (req->codec.seid != client->seid) { + error("Unable to set configuration: seid %d not opened", + req->codec.seid); + goto failed; + } + + if (!client->dev) + goto failed; + + if (req->codec.transport == BT_CAPABILITIES_TRANSPORT_SCO) { + err = handle_sco_transport(client, req); + if (err < 0) { + err = -err; + goto failed; + } + } else if (req->codec.transport == BT_CAPABILITIES_TRANSPORT_A2DP) { + err = handle_a2dp_transport(client, req); + if (err < 0) { + err = -err; + goto failed; + } + } + + start_config(client->dev, client); + + return; + +failed: + unix_ipc_error(client, BT_SET_CONFIGURATION, err ? : EIO); +} + +static void handle_streamstart_req(struct unix_client *client, + struct bt_start_stream_req *req) +{ + if (!client->dev) + goto failed; + + start_resume(client->dev, client); + + return; + +failed: + unix_ipc_error(client, BT_START_STREAM, EIO); +} + +static void handle_streamstop_req(struct unix_client *client, + struct bt_stop_stream_req *req) +{ + if (!client->dev) + goto failed; + + start_suspend(client->dev, client); + + return; + +failed: + unix_ipc_error(client, BT_STOP_STREAM, EIO); +} + +static void handle_close_req(struct unix_client *client, + struct bt_close_req *req) +{ + if (!client->dev) + goto failed; + + start_close(client->dev, client, TRUE); + + return; + +failed: + unix_ipc_error(client, BT_CLOSE, EIO); +} + +static void handle_control_req(struct unix_client *client, + struct bt_control_req *req) +{ + /* FIXME: really implement that */ + char buf[BT_SUGGESTED_BUFFER_SIZE]; + struct bt_set_configuration_rsp *rsp = (void *) buf; + + memset(buf, 0, sizeof(buf)); + rsp->h.type = BT_RESPONSE; + rsp->h.name = BT_CONTROL; + rsp->h.length = sizeof(*rsp); + + unix_ipc_sendmsg(client, &rsp->h); +} + +static void handle_delay_report_req(struct unix_client *client, + struct bt_delay_report_req *req) +{ + char buf[BT_SUGGESTED_BUFFER_SIZE]; + struct bt_set_configuration_rsp *rsp = (void *) buf; + struct a2dp_data *a2dp; + int err; + + if (!client->dev) { + err = -ENODEV; + goto failed; + } + + switch (client->type) { + case TYPE_HEADSET: + case TYPE_GATEWAY: + err = -EINVAL; + goto failed; + case TYPE_SOURCE: + case TYPE_SINK: + a2dp = &client->d.a2dp; + if (a2dp->session && a2dp->stream) { + err = avdtp_delay_report(a2dp->session, a2dp->stream, + req->delay); + if (err < 0) + goto failed; + } else { + err = -EINVAL; + goto failed; + } + break; + default: + error("No known services for device"); + err = -EINVAL; + goto failed; + } + + memset(buf, 0, sizeof(buf)); + rsp->h.type = BT_RESPONSE; + rsp->h.name = BT_DELAY_REPORT; + rsp->h.length = sizeof(*rsp); + + unix_ipc_sendmsg(client, &rsp->h); + + return; + +failed: + unix_ipc_error(client, BT_DELAY_REPORT, -err); +} + +static gboolean client_cb(GIOChannel *chan, GIOCondition cond, gpointer data) +{ + char buf[BT_SUGGESTED_BUFFER_SIZE]; + bt_audio_msg_header_t *msghdr = (void *) buf; + struct unix_client *client = data; + int len; + const char *type, *name; + + if (cond & G_IO_NVAL) + return FALSE; + + if (cond & (G_IO_HUP | G_IO_ERR)) { + DBG("Unix client disconnected (fd=%d)", client->sock); + + goto failed; + } + + memset(buf, 0, sizeof(buf)); + + len = recv(client->sock, buf, sizeof(buf), 0); + if (len < 0) { + error("recv: %s (%d)", strerror(errno), errno); + goto failed; + } + + type = bt_audio_strtype(msghdr->type); + name = bt_audio_strname(msghdr->name); + + DBG("Audio API: %s <- %s", type, name); + + if (msghdr->length != len) { + error("Invalid message: length mismatch"); + goto failed; + } + + switch (msghdr->name) { + case BT_GET_CAPABILITIES: + handle_getcapabilities_req(client, + (struct bt_get_capabilities_req *) msghdr); + break; + case BT_OPEN: + handle_open_req(client, + (struct bt_open_req *) msghdr); + break; + case BT_SET_CONFIGURATION: + handle_setconfiguration_req(client, + (struct bt_set_configuration_req *) msghdr); + break; + case BT_START_STREAM: + handle_streamstart_req(client, + (struct bt_start_stream_req *) msghdr); + break; + case BT_STOP_STREAM: + handle_streamstop_req(client, + (struct bt_stop_stream_req *) msghdr); + break; + case BT_CLOSE: + handle_close_req(client, + (struct bt_close_req *) msghdr); + break; + case BT_CONTROL: + handle_control_req(client, + (struct bt_control_req *) msghdr); + break; + case BT_DELAY_REPORT: + handle_delay_report_req(client, + (struct bt_delay_report_req *) msghdr); + break; + default: + error("Audio API: received unexpected message name %d", + msghdr->name); + } + + return TRUE; + +failed: + clients = g_slist_remove(clients, client); + start_close(client->dev, client, FALSE); + client_free(client); + return FALSE; +} + +static gboolean server_cb(GIOChannel *chan, GIOCondition cond, gpointer data) +{ + struct sockaddr_un addr; + socklen_t addrlen; + int sk, cli_sk; + struct unix_client *client; + GIOChannel *io; + + if (cond & G_IO_NVAL) + return FALSE; + + if (cond & (G_IO_HUP | G_IO_ERR)) { + g_io_channel_shutdown(chan, TRUE, NULL); + return FALSE; + } + + sk = g_io_channel_unix_get_fd(chan); + + memset(&addr, 0, sizeof(addr)); + addrlen = sizeof(addr); + + cli_sk = accept(sk, (struct sockaddr *) &addr, &addrlen); + if (cli_sk < 0) { + error("accept: %s (%d)", strerror(errno), errno); + return TRUE; + } + + DBG("Accepted new client connection on unix socket (fd=%d)", cli_sk); + set_nonblocking(cli_sk); + + client = g_new0(struct unix_client, 1); + client->sock = cli_sk; + clients = g_slist_append(clients, client); + + io = g_io_channel_unix_new(cli_sk); + g_io_add_watch(io, G_IO_IN | G_IO_HUP | G_IO_ERR | G_IO_NVAL, + client_cb, client); + g_io_channel_unref(io); + + return TRUE; +} + +void unix_device_removed(struct audio_device *dev) +{ + GSList *l; + + DBG("unix_device_removed(%p)", dev); + + l = clients; + while (l) { + struct unix_client *client = l->data; + + l = l->next; + + if (client->dev == dev) { + clients = g_slist_remove(clients, client); + start_close(client->dev, client, FALSE); + client_free(client); + } + } +} + +void unix_delay_report(struct audio_device *dev, uint8_t seid, uint16_t delay) +{ + GSList *l; + struct bt_delay_report_ind ind; + + DBG("unix_delay_report(%p): %u.%ums", dev, delay / 10, delay % 10); + + memset(&ind, 0, sizeof(ind)); + ind.h.type = BT_INDICATION; + ind.h.name = BT_DELAY_REPORT; + ind.h.length = sizeof(ind); + ind.delay = delay; + + for (l = clients; l != NULL; l = g_slist_next(l)) { + struct unix_client *client = l->data; + + if (client->dev != dev || client->seid != seid) + continue; + + unix_ipc_sendmsg(client, (void *) &ind); + } +} + +int unix_init(void) +{ + GIOChannel *io; + struct sockaddr_un addr = { + AF_UNIX, BT_IPC_SOCKET_NAME + }; + + int sk, err; + + sk = socket(PF_LOCAL, SOCK_STREAM, 0); + if (sk < 0) { + err = errno; + error("Can't create unix socket: %s (%d)", strerror(err), err); + return -err; + } + + if (bind(sk, (struct sockaddr *) &addr, sizeof(addr)) < 0) { + error("Can't bind unix socket: %s (%d)", strerror(errno), + errno); + close(sk); + return -1; + } + + set_nonblocking(sk); + + if (listen(sk, 1) < 0) { + error("Can't listen on unix socket: %s (%d)", + strerror(errno), errno); + close(sk); + return -1; + } + + unix_sock = sk; + + io = g_io_channel_unix_new(sk); + g_io_add_watch(io, G_IO_IN | G_IO_HUP | G_IO_ERR | G_IO_NVAL, + server_cb, NULL); + g_io_channel_unref(io); + + DBG("Unix socket created: %d", sk); + + return 0; +} + +void unix_exit(void) +{ + g_slist_foreach(clients, (GFunc) client_free, NULL); + g_slist_free(clients); + if (unix_sock >= 0) { + close(unix_sock); + unix_sock = -1; + } +} |