diff options
Diffstat (limited to 'audio/unix.c')
| -rw-r--r-- | audio/unix.c | 1155 |
1 files changed, 1155 insertions, 0 deletions
diff --git a/audio/unix.c b/audio/unix.c new file mode 100644 index 00000000..93f5788b --- /dev/null +++ b/audio/unix.c @@ -0,0 +1,1155 @@ +/* + * + * BlueZ - Bluetooth protocol stack for Linux + * + * Copyright (C) 2006-2007 Nokia Corporation + * Copyright (C) 2004-2008 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 <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 "logging.h" +#include "ipc.h" +#include "device.h" +#include "manager.h" +#include "avdtp.h" +#include "a2dp.h" +#include "headset.h" +#include "sink.h" +#include "unix.h" +#include "glib-helper.h" + +typedef enum { + TYPE_NONE, + TYPE_HEADSET, + 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 { + headset_lock_t lock; +}; + +struct unix_client { + struct audio_device *dev; + GSList *caps; + service_type_t type; + char *interface; + union { + struct a2dp_data a2dp; + struct headset_data hs; + } d; + int sock; + 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) (struct audio_device *dev, unsigned int id); +}; + +static GSList *clients = NULL; + +static int unix_sock = -1; + +static void client_free(struct unix_client *client) +{ + struct a2dp_data *a2dp; + + switch (client->type) { + case TYPE_SINK: + case TYPE_SOURCE: + a2dp = &client->d.a2dp; + if (client->cb_id > 0) + avdtp_stream_remove_cb(a2dp->session, a2dp->stream, + client->cb_id); + if (a2dp->sep) + a2dp_sep_unlock(a2dp->sep, a2dp->session); + if (a2dp->session) + avdtp_unref(a2dp->session); + break; + default: + break; + } + + 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); +} + +/* 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 */ + (*(int *) CMSG_DATA(cmsg)) = fd; + + return sendmsg(sock, &msgh, MSG_NOSIGNAL); +} + +static void unix_ipc_sendmsg(struct unix_client *client, + const bt_audio_msg_header_t *msg) +{ + 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); +} + +static void unix_ipc_error(struct unix_client *client, int type, int err) +{ + char buf[BT_AUDIO_IPC_PACKET_SIZE]; + bt_audio_rsp_msg_header_t *rsp_hdr = (void *) buf; + + if (!g_slist_find(clients, client)) + return; + + memset(buf, 0, sizeof(buf)); + rsp_hdr->msg_h.msg_type = type; + rsp_hdr->posix_errno = err; + + unix_ipc_sendmsg(client, &rsp_hdr->msg_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->headset && headset_is_active(dev)) + return TYPE_HEADSET; + else if (dev->sink) + return TYPE_SINK; + else if (dev->headset) + return TYPE_HEADSET; + } else if (!strcmp(interface, AUDIO_SINK_INTERFACE) && dev->sink) + return TYPE_SINK; + else if (!strcmp(interface, AUDIO_HEADSET_INTERFACE) && dev->headset) + return TYPE_HEADSET; + + 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; + } + client->dev = NULL; + if (a2dp->session) { + avdtp_unref(a2dp->session); + a2dp->session = NULL; + } + a2dp->stream = NULL; + client->cb_id = 0; + break; + default: + break; + } +} + +static void headset_discovery_complete(struct audio_device *dev, void *user_data) +{ + struct unix_client *client = user_data; + char buf[BT_AUDIO_IPC_PACKET_SIZE]; + struct bt_getcapabilities_rsp *rsp = (void *) buf; + + client->req_id = 0; + + if (!dev) + goto failed; + + memset(buf, 0, sizeof(buf)); + + rsp->rsp_h.msg_h.msg_type = BT_GETCAPABILITIES_RSP; + rsp->transport = BT_CAPABILITIES_TRANSPORT_SCO; + rsp->sampling_rate = 8000; + + unix_ipc_sendmsg(client, &rsp->rsp_h.msg_h); + + return; + +failed: + error("discovery failed"); + unix_ipc_error(client, BT_SETCONFIGURATION_RSP, EIO); + client->dev = NULL; +} + +static void headset_setup_complete(struct audio_device *dev, void *user_data) +{ + struct unix_client *client = user_data; + char buf[BT_AUDIO_IPC_PACKET_SIZE]; + struct bt_setconfiguration_rsp *rsp = (void *) buf; + struct headset_data *hs = &client->d.hs; + + client->req_id = 0; + + if (!dev) + goto failed; + + switch (client->access_mode) { + case BT_CAPABILITIES_ACCESS_MODE_READ: + hs->lock = HEADSET_LOCK_READ; + break; + case BT_CAPABILITIES_ACCESS_MODE_WRITE: + hs->lock = HEADSET_LOCK_WRITE; + break; + 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"); + goto failed; + } + + memset(buf, 0, sizeof(buf)); + + rsp->rsp_h.msg_h.msg_type = BT_SETCONFIGURATION_RSP; + rsp->transport = BT_CAPABILITIES_TRANSPORT_SCO; + rsp->access_mode = client->access_mode; + rsp->link_mtu = 48; + + client->data_fd = headset_get_sco_fd(dev); + + unix_ipc_sendmsg(client, &rsp->rsp_h.msg_h); + + return; + +failed: + error("config failed"); + unix_ipc_error(client, BT_SETCONFIGURATION_RSP, EIO); + client->dev = NULL; +} + +static void headset_resume_complete(struct audio_device *dev, void *user_data) +{ + struct unix_client *client = user_data; + char buf[BT_AUDIO_IPC_PACKET_SIZE]; + struct bt_streamstart_rsp *rsp = (void *) buf; + struct bt_streamfd_ind *ind = (void *) buf; + + client->req_id = 0; + + if (!dev) + goto failed; + + memset(buf, 0, sizeof(buf)); + + rsp->rsp_h.msg_h.msg_type = BT_STREAMSTART_RSP; + + unix_ipc_sendmsg(client, &rsp->rsp_h.msg_h); + + memset(buf, 0, sizeof(buf)); + ind->h.msg_type = BT_STREAMFD_IND; + unix_ipc_sendmsg(client, &ind->h); + + client->data_fd = headset_get_sco_fd(dev); + + 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_STREAMSTART_RSP, EIO); + client->dev = NULL; +} + +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_AUDIO_IPC_PACKET_SIZE]; + struct bt_getcapabilities_rsp *rsp = (void *) buf; + struct a2dp_data *a2dp = &client->d.a2dp; + struct sbc_codec_cap *sbc_cap = NULL; + struct mpeg_codec_cap *mpeg_cap = NULL; + GSList *l; + + if (!g_slist_find(clients, client)) { + debug("Client disconnected during discovery"); + return; + } + + if (err) + goto failed; + + memset(buf, 0, sizeof(buf)); + client->req_id = 0; + + rsp->rsp_h.msg_h.msg_type = BT_GETCAPABILITIES_RSP; + rsp->transport = BT_CAPABILITIES_TRANSPORT_A2DP; + + for (l = seps; l; l = g_slist_next(l)) { + struct avdtp_remote_sep *rsep = l->data; + struct avdtp_service_capability *cap; + struct avdtp_media_codec_capability *codec_cap; + + cap = avdtp_get_codec(rsep); + + if (cap->category != AVDTP_MEDIA_CODEC) + continue; + + codec_cap = (void *) cap->data; + + if (codec_cap->media_codec_type == A2DP_CODEC_SBC && !sbc_cap) + sbc_cap = (void *) codec_cap; + + if (codec_cap->media_codec_type == A2DP_CODEC_MPEG12 && !mpeg_cap) + mpeg_cap = (void *) codec_cap; + } + + /* endianess prevent direct cast */ + if (sbc_cap) { + 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; + rsp->sbc_capabilities.min_bitpool = sbc_cap->min_bitpool; + rsp->sbc_capabilities.max_bitpool = sbc_cap->max_bitpool; + } + + if (mpeg_cap) { + rsp->mpeg_capabilities.channel_mode = mpeg_cap->channel_mode; + rsp->mpeg_capabilities.crc = mpeg_cap->crc; + rsp->mpeg_capabilities.layer = mpeg_cap->layer; + rsp->mpeg_capabilities.frequency = mpeg_cap->frequency; + rsp->mpeg_capabilities.mpf = mpeg_cap->mpf; + rsp->mpeg_capabilities.bitrate = mpeg_cap->bitrate; + } + + unix_ipc_sendmsg(client, &rsp->rsp_h.msg_h); + + return; + +failed: + error("discovery failed"); + unix_ipc_error(client, BT_GETCAPABILITIES_RSP, EIO); + + 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_AUDIO_IPC_PACKET_SIZE]; + struct bt_setconfiguration_rsp *rsp = (void *) buf; + struct a2dp_data *a2dp = &client->d.a2dp; + uint16_t imtu, omtu; + GSList *caps; + + if (err) + goto failed; + + memset(buf, 0, sizeof(buf)); + client->req_id = 0; + + if (!stream) + goto failed; + + if (!a2dp_sep_lock(sep, session)) { + error("Unable to lock A2DP source SEP"); + goto failed; + } + + 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->rsp_h.msg_h.msg_type = BT_SETCONFIGURATION_RSP; + rsp->transport = BT_CAPABILITIES_TRANSPORT_A2DP; + client->access_mode = BT_CAPABILITIES_ACCESS_MODE_WRITE; + rsp->access_mode = client->access_mode; + /* FIXME: Use imtu when fd_opt is CFG_FD_OPT_READ */ + rsp->link_mtu = omtu; + + unix_ipc_sendmsg(client, &rsp->rsp_h.msg_h); + + client->cb_id = avdtp_stream_add_cb(session, stream, + stream_state_changed, client); + + return; + +failed: + error("config failed"); + + if (a2dp->sep) { + a2dp_sep_unlock(a2dp->sep, a2dp->session); + a2dp->sep = NULL; + } + unix_ipc_error(client, BT_SETCONFIGURATION_RSP, EIO); + + avdtp_unref(a2dp->session); + + a2dp->session = NULL; + a2dp->stream = 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_AUDIO_IPC_PACKET_SIZE]; + struct bt_streamstart_rsp *rsp = (void *) buf; + struct bt_streamfd_ind *ind = (void *) buf; + struct a2dp_data *a2dp = &client->d.a2dp; + + if (err) + goto failed; + + memset(buf, 0, sizeof(buf)); + rsp->rsp_h.msg_h.msg_type = BT_STREAMSTART_RSP; + rsp->rsp_h.posix_errno = 0; + unix_ipc_sendmsg(client, &rsp->rsp_h.msg_h); + + memset(buf, 0, sizeof(buf)); + ind->h.msg_type = BT_STREAMFD_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"); + + if (a2dp->sep) { + a2dp_sep_unlock(a2dp->sep, a2dp->session); + a2dp->sep = NULL; + } + unix_ipc_error(client, BT_STREAMSTART_RSP, EIO); + + 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_AUDIO_IPC_PACKET_SIZE]; + struct bt_streamstart_rsp *rsp = (void *) buf; + struct a2dp_data *a2dp = &client->d.a2dp; + + if (err) + goto failed; + + memset(buf, 0, sizeof(buf)); + rsp->rsp_h.msg_h.msg_type = BT_STREAMSTOP_RSP; + rsp->rsp_h.posix_errno = 0; + unix_ipc_sendmsg(client, &rsp->rsp_h.msg_h); + + return; + +failed: + error("suspend failed"); + + if (a2dp->sep) { + a2dp_sep_unlock(a2dp->sep, a2dp->session); + a2dp->sep = NULL; + } + unix_ipc_error(client, BT_STREAMSTOP_RSP, EIO); + + avdtp_unref(a2dp->session); + + a2dp->session = NULL; + a2dp->stream = NULL; +} + +static void start_discovery(struct audio_device *dev, struct unix_client *client) +{ + struct a2dp_data *a2dp; + int err = 0; + + client->type = select_service(dev, client->interface); + + switch (client->type) { + case TYPE_SINK: + 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) + goto failed; + break; + + case TYPE_HEADSET: + 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_GETCAPABILITIES_RSP, err ? : EIO); +} + +static void start_config(struct audio_device *dev, struct unix_client *client) +{ + struct a2dp_data *a2dp; + unsigned int id; + + client->type = select_service(dev, client->interface); + + switch (client->type) { + case TYPE_SINK: + 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; + } + + id = a2dp_source_config(a2dp->session, a2dp_config_complete, + client->caps, client); + client->cancel = a2dp_source_cancel; + break; + + case TYPE_HEADSET: + id = headset_request_stream(dev, headset_setup_complete, client); + client->cancel = headset_cancel_stream; + break; + + default: + error("No known services for device"); + goto failed; + } + + if (id == 0) { + error("config failed"); + goto failed; + } + + client->req_id = id; + client->dev = dev; + + return; + +failed: + unix_ipc_error(client, BT_SETCONFIGURATION_RSP, EIO); +} + +static void start_resume(struct audio_device *dev, struct unix_client *client) +{ + struct a2dp_data *a2dp; + unsigned int id; + + client->type = select_service(dev, client->interface); + + switch (client->type) { + case TYPE_SINK: + 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("Unable to get a sep"); + goto failed; + } + + id = a2dp_source_resume(a2dp->session, a2dp->sep, + a2dp_resume_complete, client); + client->cancel = a2dp_source_cancel; + + if (id == 0) { + error("resume failed"); + goto failed; + } + + break; + + case TYPE_HEADSET: + headset_resume_complete(dev, client); + break; + + default: + error("No known services for device"); + goto failed; + } + + return; + +failed: + unix_ipc_error(client, BT_STREAMSTART_RSP, EIO); +} + +static void start_suspend(struct audio_device *dev, struct unix_client *client) +{ + struct a2dp_data *a2dp; + unsigned int id; + + client->type = select_service(dev, client->interface); + + switch (client->type) { + case TYPE_SINK: + 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("Unable to get a sep"); + goto failed; + } + + id = a2dp_source_suspend(a2dp->session, a2dp->sep, + a2dp_suspend_complete, client); + client->cancel = a2dp_source_cancel; + break; + + case TYPE_HEADSET: + id = headset_request_stream(dev, headset_setup_complete, client); + client->cancel = headset_cancel_stream; + break; + + default: + error("No known services for device"); + goto failed; + } + + if (id == 0) { + error("suspend failed"); + goto failed; + } + + return; + +failed: + unix_ipc_error(client, BT_STREAMSTOP_RSP, EIO); +} + +static void create_cb(struct audio_device *dev, void *user_data) +{ + struct unix_client *client = user_data; + + if (!dev) + unix_ipc_error(client, BT_GETCAPABILITIES_RSP, EIO); + else + start_discovery(dev, client); +} + +static void handle_getcapabilities_req(struct unix_client *client, + struct bt_getcapabilities_req *req) +{ + struct audio_device *dev; + bdaddr_t bdaddr; + + str2ba(req->device, &bdaddr); + + if (client->interface) { + g_free(client->interface); + client->interface = NULL; + } + + if (req->transport == BT_CAPABILITIES_TRANSPORT_SCO) + client->interface = g_strdup(AUDIO_HEADSET_INTERFACE); + else if (req->transport == BT_CAPABILITIES_TRANSPORT_A2DP) + client->interface = g_strdup(AUDIO_SINK_INTERFACE); + + if (!manager_find_device(&bdaddr, NULL, FALSE)) { + if (!(req->flags & BT_FLAG_AUTOCONNECT)) + goto failed; + if (!bacmp(&bdaddr, BDADDR_ANY)) + goto failed; + if (!manager_create_device(&bdaddr, create_cb, client)) + goto failed; + return; + } + + dev = manager_find_device(&bdaddr, client->interface, TRUE); + if (!dev) { + if (req->flags & BT_FLAG_AUTOCONNECT) + dev = manager_find_device(&bdaddr, client->interface, FALSE); + else + goto failed; + } + + if (!dev) + goto failed; + + start_discovery(dev, client); + + return; + +failed: + unix_ipc_error(client, BT_GETCAPABILITIES_RSP, EIO); +} + +static int handle_sco_transport(struct unix_client *client, + struct bt_setconfiguration_req *req) +{ + client->interface = g_strdup(AUDIO_HEADSET_INTERFACE); + + info("config sco - device = %s access_mode = %u", req->device, + req->access_mode); + + return 0; +} + +static int handle_a2dp_transport(struct unix_client *client, + struct bt_setconfiguration_req *req) +{ + struct avdtp_service_capability *media_transport, *media_codec; + struct sbc_codec_cap sbc_cap; + struct mpeg_codec_cap mpeg_cap; + + client->interface = g_strdup(AUDIO_SINK_INTERFACE); + + if (client->caps) { + g_slist_foreach(client->caps, (GFunc) g_free, NULL); + g_slist_free(client->caps); + } + + media_transport = avdtp_service_cap_new(AVDTP_MEDIA_TRANSPORT, + NULL, 0); + + client->caps = g_slist_append(client->caps, media_transport); + + info("config a2dp - device = %s access_mode = %u", req->device, + req->access_mode); + + if (req->mpeg_capabilities.frequency) { + + 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 = req->mpeg_capabilities.channel_mode; + mpeg_cap.crc = req->mpeg_capabilities.crc; + mpeg_cap.layer = req->mpeg_capabilities.layer; + mpeg_cap.frequency = req->mpeg_capabilities.frequency; + mpeg_cap.mpf = req->mpeg_capabilities.mpf; + mpeg_cap.bitrate = req->mpeg_capabilities.bitrate; + + media_codec = avdtp_service_cap_new(AVDTP_MEDIA_CODEC, &mpeg_cap, + sizeof(mpeg_cap)); + + info("codec mpeg12 - frequency = %u channel_mode = %u " + "layer = %u crc = %u mpf = %u bitrate = %u", + mpeg_cap.frequency, mpeg_cap.channel_mode, + mpeg_cap.layer, mpeg_cap.crc, mpeg_cap.mpf, + mpeg_cap.bitrate); + } else if (req->sbc_capabilities.frequency) { + 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 = req->sbc_capabilities.channel_mode; + sbc_cap.frequency = req->sbc_capabilities.frequency; + sbc_cap.allocation_method = req->sbc_capabilities.allocation_method; + sbc_cap.subbands = req->sbc_capabilities.subbands; + sbc_cap.block_length = req->sbc_capabilities.block_length; + sbc_cap.min_bitpool = req->sbc_capabilities.min_bitpool; + sbc_cap.max_bitpool = req->sbc_capabilities.max_bitpool; + + media_codec = avdtp_service_cap_new(AVDTP_MEDIA_CODEC, &sbc_cap, + sizeof(sbc_cap)); + + info("codec sbc - frequency = %u channel_mode = %u " + "allocation = %u subbands = %u blocks = %u " + "bitpool = %u", sbc_cap.frequency, + sbc_cap.channel_mode, sbc_cap.allocation_method, + sbc_cap.subbands, sbc_cap.block_length, + sbc_cap.max_bitpool); + } 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_setconfiguration_req *req) +{ + struct audio_device *dev; + bdaddr_t bdaddr; + int err = 0; + + if (!req->access_mode) { + err = EINVAL; + goto failed; + } + + str2ba(req->device, &bdaddr); + + if (client->interface) { + g_free(client->interface); + client->interface = NULL; + } + + if (req->transport == BT_CAPABILITIES_TRANSPORT_SCO) { + err = handle_sco_transport(client, req); + if (err < 0) { + err = -err; + goto failed; + } + } else if (req->transport == BT_CAPABILITIES_TRANSPORT_A2DP) { + err = handle_a2dp_transport(client, req); + if (err < 0) { + err = -err; + goto failed; + } + } + + if (!manager_find_device(&bdaddr, NULL, FALSE)) { + if (!bacmp(&bdaddr, BDADDR_ANY)) + goto failed; + if (!manager_create_device(&bdaddr, create_cb, client)) + goto failed; + return; + } + + dev = manager_find_device(&bdaddr, client->interface, TRUE); + if (!dev) + dev = manager_find_device(&bdaddr, client->interface, FALSE); + + if (!dev) + goto failed; + + client->access_mode = req->access_mode; + + start_config(dev, client); + + return; + +failed: + unix_ipc_error(client, BT_SETCONFIGURATION_RSP, err ? : EIO); +} + +static void handle_streamstart_req(struct unix_client *client, + struct bt_streamstart_req *req) +{ + if (!client->dev) + goto failed; + + start_resume(client->dev, client); + + return; + +failed: + unix_ipc_error(client, BT_STREAMSTART_REQ, EIO); +} + +static void handle_streamstop_req(struct unix_client *client, + struct bt_streamstop_req *req) +{ + if (!client->dev) + goto failed; + + start_suspend(client->dev, client); + + return; + +failed: + unix_ipc_error(client, BT_STREAMSTOP_REQ, EIO); +} + +static void handle_control_req(struct unix_client *client, + struct bt_control_req *req) +{ + /* FIXME: really implement that */ + char buf[BT_AUDIO_IPC_PACKET_SIZE]; + struct bt_setconfiguration_rsp *rsp = (void *) buf; + + memset(buf, 0, sizeof(buf)); + rsp->rsp_h.msg_h.msg_type = BT_CONTROL_RSP; + rsp->rsp_h.posix_errno = 0; + + unix_ipc_sendmsg(client, &rsp->rsp_h.msg_h); +} + +static gboolean client_cb(GIOChannel *chan, GIOCondition cond, gpointer data) +{ + char buf[BT_AUDIO_IPC_PACKET_SIZE]; + bt_audio_msg_header_t *msghdr = (void *) buf; + struct unix_client *client = data; + int len; + struct a2dp_data *a2dp = &client->d.a2dp; + struct headset_data *hs = &client->d.hs; + const char *type; + + if (cond & G_IO_NVAL) + return FALSE; + + if (cond & (G_IO_HUP | G_IO_ERR)) { + debug("Unix client disconnected (fd=%d)", client->sock); + switch (client->type) { + case TYPE_HEADSET: + if (client->dev) + headset_unlock(client->dev, hs->lock); + break; + case TYPE_SOURCE: + case TYPE_SINK: + if (a2dp->sep) { + a2dp_sep_unlock(a2dp->sep, a2dp->session); + a2dp->sep = NULL; + } + break; + default: + break; + } + + if (client->cancel && client->req_id > 0) + client->cancel(client->dev, client->req_id); + goto failed; + } + + memset(buf, 0, sizeof(buf)); + + len = recv(client->sock, buf, sizeof(buf), MSG_WAITALL); + if (len < 0) { + error("recv: %s (%d)", strerror(errno), errno); + goto failed; + } + + if ((type = bt_audio_strmsg(msghdr->msg_type))) + info("Audio API: received %s", type); + + 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); + 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_close(chan); + 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; + } + + debug("Accepted new client connection on unix socket (fd=%d)", 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; +} + +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); + + unix_sock = sk; + + listen(sk, 1); + + 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); + + info("Unix socket created: %d", sk); + + return 0; +} + +void unix_exit(void) +{ + g_slist_foreach(clients, (GFunc) client_free, NULL); + g_slist_free(clients); + close(unix_sock); + unix_sock = -1; +} |