diff options
Diffstat (limited to 'audio/transport.c')
| -rw-r--r-- | audio/transport.c | 927 |
1 files changed, 927 insertions, 0 deletions
diff --git a/audio/transport.c b/audio/transport.c new file mode 100644 index 0000000..8ff6c85 --- /dev/null +++ b/audio/transport.c @@ -0,0 +1,927 @@ +/* + * + * BlueZ - Bluetooth protocol stack for Linux + * + * Copyright (C) 2006-2007 Nokia Corporation + * Copyright (C) 2004-2009 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 <errno.h> + +#include <glib.h> +#include <gdbus.h> + +#include "../src/adapter.h" +#include "../src/dbus-common.h" + +#include "log.h" +#include "error.h" +#include "device.h" +#include "avdtp.h" +#include "media.h" +#include "transport.h" +#include "a2dp.h" +#include "headset.h" + +#ifndef DBUS_TYPE_UNIX_FD +#define DBUS_TYPE_UNIX_FD -1 +#endif + +#define MEDIA_TRANSPORT_INTERFACE "org.bluez.MediaTransport" + +struct media_request { + DBusMessage *msg; + guint id; +}; + +struct media_owner { + struct media_transport *transport; + struct media_request *pending; + char *name; + char *accesstype; + guint watch; +}; + +struct media_transport { + DBusConnection *conn; + char *path; /* Transport object path */ + struct audio_device *device; /* Transport device */ + struct avdtp *session; /* Signalling session (a2dp only) */ + struct media_endpoint *endpoint; /* Transport endpoint */ + GSList *owners; /* Transport owners */ + uint8_t *configuration; /* Transport configuration */ + int size; /* Transport configuration size */ + int fd; /* Transport file descriptor */ + uint16_t imtu; /* Transport input mtu */ + uint16_t omtu; /* Transport output mtu */ + uint16_t delay; /* Transport delay (a2dp only) */ + unsigned int nrec_id; /* Transport nrec watch (headset only) */ + gboolean read_lock; + gboolean write_lock; + gboolean in_use; + guint (*resume) (struct media_transport *transport, + struct media_owner *owner); + guint (*suspend) (struct media_transport *transport, + struct media_owner *owner); + void (*cancel) (struct media_transport *transport, + guint id); + void (*get_properties) ( + struct media_transport *transport, + DBusMessageIter *dict); + int (*set_property) ( + struct media_transport *transport, + const char *property, + DBusMessageIter *value); +}; + +void media_transport_destroy(struct media_transport *transport) +{ + char *path; + + path = g_strdup(transport->path); + + g_dbus_unregister_interface(transport->conn, path, + MEDIA_TRANSPORT_INTERFACE); + + g_free(path); +} + +static struct media_request *media_request_create(DBusMessage *msg, guint id) +{ + struct media_request *req; + + req = g_new0(struct media_request, 1); + req->msg = dbus_message_ref(msg); + req->id = id; + + DBG("Request created: method=%s id=%u", dbus_message_get_member(msg), + id); + + return req; +} + +static void media_request_reply(struct media_request *req, + DBusConnection *conn, int err) +{ + DBusMessage *reply; + + DBG("Request %s Reply %s", dbus_message_get_member(req->msg), + strerror(err)); + + if (!err) + reply = g_dbus_create_reply(req->msg, DBUS_TYPE_INVALID); + else + reply = g_dbus_create_error(req->msg, + ERROR_INTERFACE ".Failed", + "%s", strerror(err)); + + g_dbus_send_message(conn, reply); +} + +static gboolean media_transport_release(struct media_transport *transport, + const char *accesstype) +{ + if (g_strstr_len(accesstype, -1, "r") != NULL) { + transport->read_lock = FALSE; + DBG("Transport %s: read lock released", transport->path); + } + + if (g_strstr_len(accesstype, -1, "w") != NULL) { + transport->write_lock = FALSE; + DBG("Transport %s: write lock released", transport->path); + } + + return TRUE; +} + +static void media_owner_remove(struct media_owner *owner) +{ + struct media_transport *transport = owner->transport; + struct media_request *req = owner->pending; + + if (!req) + return; + + DBG("Owner %s Request %s", owner->name, + dbus_message_get_member(req->msg)); + + if (req->id) + transport->cancel(transport, req->id); + + owner->pending = NULL; + if (req->msg) + dbus_message_unref(req->msg); + + g_free(req); +} + +static void media_owner_free(struct media_owner *owner) +{ + DBG("Owner %s", owner->name); + + media_owner_remove(owner); + + g_free(owner->name); + g_free(owner->accesstype); + g_free(owner); +} + +static void media_transport_remove(struct media_transport *transport, + struct media_owner *owner) +{ + DBG("Transport %s Owner %s", transport->path, owner->name); + + media_transport_release(transport, owner->accesstype); + + /* Reply if owner has a pending request */ + if (owner->pending) + media_request_reply(owner->pending, transport->conn, EIO); + + transport->owners = g_slist_remove(transport->owners, owner); + + if (owner->watch) + g_dbus_remove_watch(transport->conn, owner->watch); + + media_owner_free(owner); + + /* Suspend if there is no longer any owner */ + if (transport->owners == NULL && transport->in_use) + transport->suspend(transport, NULL); +} + +static gboolean media_transport_set_fd(struct media_transport *transport, + int fd, uint16_t imtu, uint16_t omtu) +{ + if (transport->fd == fd) + return TRUE; + + transport->fd = fd; + transport->imtu = imtu; + transport->omtu = omtu; + + info("%s: fd(%d) ready", transport->path, fd); + + return TRUE; +} + +static gboolean remove_owner(gpointer data) +{ + struct media_owner *owner = data; + + media_transport_remove(owner->transport, owner); + + return FALSE; +} + +static void a2dp_resume_complete(struct avdtp *session, + struct avdtp_error *err, void *user_data) +{ + struct media_owner *owner = user_data; + struct media_request *req = owner->pending; + struct media_transport *transport = owner->transport; + struct a2dp_sep *sep = media_endpoint_get_sep(transport->endpoint); + struct avdtp_stream *stream; + int fd; + uint16_t imtu, omtu; + gboolean ret; + + req->id = 0; + + if (err) + goto fail; + + stream = a2dp_sep_get_stream(sep); + if (stream == NULL) + goto fail; + + ret = avdtp_stream_get_transport(stream, &fd, &imtu, &omtu, NULL); + if (ret == FALSE) + goto fail; + + media_transport_set_fd(transport, fd, imtu, omtu); + + if (g_strstr_len(owner->accesstype, -1, "r") == NULL) + imtu = 0; + + if (g_strstr_len(owner->accesstype, -1, "w") == NULL) + omtu = 0; + + ret = g_dbus_send_reply(transport->conn, req->msg, + DBUS_TYPE_UNIX_FD, &fd, + DBUS_TYPE_UINT16, &imtu, + DBUS_TYPE_UINT16, &omtu, + DBUS_TYPE_INVALID); + if (ret == FALSE) + goto fail; + + media_owner_remove(owner); + + return; + +fail: + /* Let the stream state change before removing the owner */ + g_idle_add(remove_owner, owner); +} + +static guint resume_a2dp(struct media_transport *transport, + struct media_owner *owner) +{ + struct media_endpoint *endpoint = transport->endpoint; + struct audio_device *device = transport->device; + struct a2dp_sep *sep = media_endpoint_get_sep(endpoint); + + if (transport->session == NULL) { + transport->session = avdtp_get(&device->src, &device->dst); + if (transport->session == NULL) + return 0; + } + + if (transport->in_use == TRUE) + goto done; + + transport->in_use = a2dp_sep_lock(sep, transport->session); + if (transport->in_use == FALSE) + return 0; + +done: + return a2dp_resume(transport->session, sep, a2dp_resume_complete, + owner); +} + +static void a2dp_suspend_complete(struct avdtp *session, + struct avdtp_error *err, void *user_data) +{ + struct media_owner *owner = user_data; + struct media_transport *transport = owner->transport; + struct a2dp_sep *sep = media_endpoint_get_sep(transport->endpoint); + + /* Release always succeeds */ + if (owner->pending) { + owner->pending->id = 0; + media_request_reply(owner->pending, transport->conn, 0); + media_owner_remove(owner); + } + + a2dp_sep_unlock(sep, transport->session); + transport->in_use = FALSE; + media_transport_remove(transport, owner); +} + +static guint suspend_a2dp(struct media_transport *transport, + struct media_owner *owner) +{ + struct media_endpoint *endpoint = transport->endpoint; + struct a2dp_sep *sep = media_endpoint_get_sep(endpoint); + + if (!owner) { + a2dp_sep_unlock(sep, transport->session); + transport->in_use = FALSE; + return 0; + } + + return a2dp_suspend(transport->session, sep, a2dp_suspend_complete, + owner); +} + +static void cancel_a2dp(struct media_transport *transport, guint id) +{ + a2dp_cancel(transport->device, id); +} + +static void headset_resume_complete(struct audio_device *dev, void *user_data) +{ + struct media_owner *owner = user_data; + struct media_request *req = owner->pending; + struct media_transport *transport = owner->transport; + int fd; + uint16_t imtu, omtu; + gboolean ret; + + req->id = 0; + + if (dev == NULL) + goto fail; + + fd = headset_get_sco_fd(dev); + if (fd < 0) + goto fail; + + imtu = 48; + omtu = 48; + + media_transport_set_fd(transport, fd, imtu, omtu); + + if (g_strstr_len(owner->accesstype, -1, "r") == NULL) + imtu = 0; + + if (g_strstr_len(owner->accesstype, -1, "w") == NULL) + omtu = 0; + + ret = g_dbus_send_reply(transport->conn, req->msg, + DBUS_TYPE_UNIX_FD, &fd, + DBUS_TYPE_UINT16, &imtu, + DBUS_TYPE_UINT16, &omtu, + DBUS_TYPE_INVALID); + if (ret == FALSE) + goto fail; + + media_owner_remove(owner); + + return; + +fail: + media_transport_remove(transport, owner); +} + +static guint resume_headset(struct media_transport *transport, + struct media_owner *owner) +{ + struct audio_device *device = transport->device; + + if (transport->in_use == TRUE) + goto done; + + transport->in_use = headset_lock(device, HEADSET_LOCK_READ | + HEADSET_LOCK_WRITE); + if (transport->in_use == FALSE) + return 0; + +done: + return headset_request_stream(device, headset_resume_complete, + owner); +} + +static void headset_suspend_complete(struct audio_device *dev, void *user_data) +{ + struct media_owner *owner = user_data; + struct media_transport *transport = owner->transport; + + /* Release always succeeds */ + if (owner->pending) { + owner->pending->id = 0; + media_request_reply(owner->pending, transport->conn, 0); + media_owner_remove(owner); + } + + headset_unlock(dev, HEADSET_LOCK_READ | HEADSET_LOCK_WRITE); + transport->in_use = FALSE; + media_transport_remove(transport, owner); +} + +static guint suspend_headset(struct media_transport *transport, + struct media_owner *owner) +{ + struct audio_device *device = transport->device; + + if (!owner) { + headset_unlock(device, HEADSET_LOCK_READ | HEADSET_LOCK_WRITE); + transport->in_use = FALSE; + return 0; + } + + return headset_suspend_stream(device, headset_suspend_complete, owner); +} + +static void cancel_headset(struct media_transport *transport, guint id) +{ + headset_cancel_stream(transport->device, id); +} + +static void media_owner_exit(DBusConnection *connection, void *user_data) +{ + struct media_owner *owner = user_data; + + owner->watch = 0; + + media_owner_remove(owner); + + media_transport_remove(owner->transport, owner); +} + +static gboolean media_transport_acquire(struct media_transport *transport, + const char *accesstype) +{ + gboolean read_lock = FALSE, write_lock = FALSE; + + if (g_strstr_len(accesstype, -1, "r") != NULL) { + if (transport->read_lock == TRUE) + return FALSE; + read_lock = TRUE; + } + + if (g_strstr_len(accesstype, -1, "w") != NULL) { + if (transport->write_lock == TRUE) + return FALSE; + write_lock = TRUE; + } + + /* Check invalid accesstype */ + if (read_lock == FALSE && write_lock == FALSE) + return FALSE; + + if (read_lock) { + transport->read_lock = read_lock; + DBG("Transport %s: read lock acquired", transport->path); + } + + if (write_lock) { + transport->write_lock = write_lock; + DBG("Transport %s: write lock acquired", transport->path); + } + + + return TRUE; +} + +static void media_transport_add(struct media_transport *transport, + struct media_owner *owner) +{ + DBG("Transport %s Owner %s", transport->path, owner->name); + transport->owners = g_slist_append(transport->owners, owner); + owner->transport = transport; +} + +static struct media_owner *media_owner_create(DBusConnection *conn, + DBusMessage *msg, + const char *accesstype) +{ + struct media_owner *owner; + + owner = g_new0(struct media_owner, 1); + owner->name = g_strdup(dbus_message_get_sender(msg)); + owner->accesstype = g_strdup(accesstype); + owner->watch = g_dbus_add_disconnect_watch(conn, owner->name, + media_owner_exit, + owner, NULL); + + DBG("Owner created: sender=%s accesstype=%s", owner->name, + accesstype); + + return owner; +} + +static void media_owner_add(struct media_owner *owner, + struct media_request *req) +{ + DBG("Owner %s Request %s", owner->name, + dbus_message_get_member(req->msg)); + + owner->pending = req; +} + +static struct media_owner *media_transport_find_owner( + struct media_transport *transport, + const char *name) +{ + GSList *l; + + for (l = transport->owners; l; l = l->next) { + struct media_owner *owner = l->data; + + if (g_strcmp0(owner->name, name) == 0) + return owner; + } + + return NULL; +} + +static DBusMessage *acquire(DBusConnection *conn, DBusMessage *msg, + void *data) +{ + struct media_transport *transport = data; + struct media_owner *owner; + struct media_request *req; + const char *accesstype, *sender; + guint id; + + if (!dbus_message_get_args(msg, NULL, + DBUS_TYPE_STRING, &accesstype, + DBUS_TYPE_INVALID)) + return NULL; + + sender = dbus_message_get_sender(msg); + + owner = media_transport_find_owner(transport, sender); + if (owner != NULL) + return btd_error_not_authorized(msg); + + if (media_transport_acquire(transport, accesstype) == FALSE) + return btd_error_not_authorized(msg); + + owner = media_owner_create(conn, msg, accesstype); + id = transport->resume(transport, owner); + if (id == 0) { + media_owner_free(owner); + return btd_error_not_authorized(msg); + } + + req = media_request_create(msg, id); + media_owner_add(owner, req); + media_transport_add(transport, owner); + + return NULL; +} + +static DBusMessage *release(DBusConnection *conn, DBusMessage *msg, + void *data) +{ + struct media_transport *transport = data; + struct media_owner *owner; + const char *accesstype, *sender; + struct media_request *req; + + if (!dbus_message_get_args(msg, NULL, + DBUS_TYPE_STRING, &accesstype, + DBUS_TYPE_INVALID)) + return NULL; + + sender = dbus_message_get_sender(msg); + + owner = media_transport_find_owner(transport, sender); + if (owner == NULL) + return btd_error_not_authorized(msg); + + if (g_strcmp0(owner->accesstype, accesstype) == 0) { + guint id; + + /* Not the last owner, no need to suspend */ + if (g_slist_length(transport->owners) != 1) { + media_transport_remove(transport, owner); + return g_dbus_create_reply(msg, DBUS_TYPE_INVALID); + } + + if (owner->pending) { + const char *member; + + member = dbus_message_get_member(owner->pending->msg); + /* Cancel Acquire request if that exist */ + if (g_str_equal(member, "Acquire")) + media_owner_remove(owner); + else + return btd_error_in_progress(msg); + } + + id = transport->suspend(transport, owner); + if (id == 0) { + media_transport_remove(transport, owner); + return g_dbus_create_reply(msg, DBUS_TYPE_INVALID); + } + + req = media_request_create(msg, id); + media_owner_add(owner, req); + + return NULL; + } else if (g_strstr_len(owner->accesstype, -1, accesstype) != NULL) { + media_transport_release(transport, accesstype); + g_strdelimit(owner->accesstype, accesstype, ' '); + } else + return btd_error_not_authorized(msg); + + return g_dbus_create_reply(msg, DBUS_TYPE_INVALID); +} + +static int set_property_a2dp(struct media_transport *transport, + const char *property, + DBusMessageIter *value) +{ + if (g_strcmp0(property, "Delay") == 0) { + if (dbus_message_iter_get_arg_type(value) != DBUS_TYPE_UINT16) + return -EINVAL; + dbus_message_iter_get_basic(value, &transport->delay); + + /* FIXME: send new delay */ + return 0; + } + + return -EINVAL; +} + +static int set_property_headset(struct media_transport *transport, + const char *property, + DBusMessageIter *value) +{ + if (g_strcmp0(property, "NREC") == 0) { + gboolean nrec; + + if (dbus_message_iter_get_arg_type(value) != DBUS_TYPE_BOOLEAN) + return -EINVAL; + dbus_message_iter_get_basic(value, &nrec); + + /* FIXME: set new nrec */ + return 0; + } else if (g_strcmp0(property, "InbandRingtone") == 0) { + gboolean inband; + + if (dbus_message_iter_get_arg_type(value) != DBUS_TYPE_BOOLEAN) + return -EINVAL; + dbus_message_iter_get_basic(value, &inband); + + /* FIXME: set new inband */ + return 0; + } + + return -EINVAL; +} + +static DBusMessage *set_property(DBusConnection *conn, DBusMessage *msg, + void *data) +{ + struct media_transport *transport = data; + DBusMessageIter iter; + DBusMessageIter value; + const char *property, *sender; + GSList *l; + int err; + + if (!dbus_message_iter_init(msg, &iter)) + return btd_error_invalid_args(msg); + + if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING) + return btd_error_invalid_args(msg); + + dbus_message_iter_get_basic(&iter, &property); + dbus_message_iter_next(&iter); + + if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT) + return btd_error_invalid_args(msg); + dbus_message_iter_recurse(&iter, &value); + + sender = dbus_message_get_sender(msg); + err = -EINVAL; + + /* Check if sender has acquired the transport */ + for (l = transport->owners; l; l = l->next) { + struct media_owner *owner = l->data; + + if (g_strcmp0(owner->name, sender) == 0) { + err = transport->set_property(transport, property, + &value); + break; + } + } + + if (err < 0) { + if (err == -EINVAL) + return btd_error_invalid_args(msg); + return btd_error_failed(msg, strerror(-err)); + } + + return g_dbus_create_reply(msg, DBUS_TYPE_INVALID); +} + +static void get_properties_a2dp(struct media_transport *transport, + DBusMessageIter *dict) +{ + dict_append_entry(dict, "Delay", DBUS_TYPE_UINT16, &transport->delay); +} + +static void get_properties_headset(struct media_transport *transport, + DBusMessageIter *dict) +{ + gboolean nrec, inband; + const char *routing; + + nrec = headset_get_nrec(transport->device); + dict_append_entry(dict, "NREC", DBUS_TYPE_BOOLEAN, &nrec); + + inband = headset_get_inband(transport->device); + dict_append_entry(dict, "InbandRingtone", DBUS_TYPE_BOOLEAN, &inband); + + routing = headset_get_sco_hci(transport->device) ? "HCI" : "PCM"; + dict_append_entry(dict, "Routing", DBUS_TYPE_STRING, &routing); +} + +void transport_get_properties(struct media_transport *transport, + DBusMessageIter *iter) +{ + DBusMessageIter dict; + const char *uuid; + uint8_t codec; + + dbus_message_iter_open_container(iter, DBUS_TYPE_ARRAY, + DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING + DBUS_TYPE_STRING_AS_STRING DBUS_TYPE_VARIANT_AS_STRING + DBUS_DICT_ENTRY_END_CHAR_AS_STRING, &dict); + + /* Device */ + dict_append_entry(&dict, "Device", DBUS_TYPE_OBJECT_PATH, + &transport->device->path); + + uuid = media_endpoint_get_uuid(transport->endpoint); + dict_append_entry(&dict, "UUID", DBUS_TYPE_STRING, &uuid); + + codec = media_endpoint_get_codec(transport->endpoint); + dict_append_entry(&dict, "Codec", DBUS_TYPE_BYTE, &codec); + + dict_append_array(&dict, "Configuration", DBUS_TYPE_BYTE, + &transport->configuration, transport->size); + + if (transport->get_properties) + transport->get_properties(transport, &dict); + + dbus_message_iter_close_container(iter, &dict); +} + +static DBusMessage *get_properties(DBusConnection *conn, DBusMessage *msg, + void *data) +{ + struct media_transport *transport = data; + DBusMessage *reply; + DBusMessageIter iter; + + reply = dbus_message_new_method_return(msg); + if (!reply) + return NULL; + + dbus_message_iter_init_append(reply, &iter); + + transport_get_properties(transport, &iter); + + return reply; +} + +static GDBusMethodTable transport_methods[] = { + { "GetProperties", "", "a{sv}", get_properties }, + { "Acquire", "s", "h", acquire, + G_DBUS_METHOD_FLAG_ASYNC}, + { "Release", "s", "", release, + G_DBUS_METHOD_FLAG_ASYNC}, + { "SetProperty", "sv", "", set_property }, + { }, +}; + +static GDBusSignalTable transport_signals[] = { + { "PropertyChanged", "sv" }, + { } +}; + +static void media_transport_free(void *data) +{ + struct media_transport *transport = data; + GSList *l; + + for (l = transport->owners; l; l = l->next) + media_transport_remove(transport, l->data); + + g_slist_free(transport->owners); + + if (transport->session) + avdtp_unref(transport->session); + + if (transport->nrec_id) + headset_remove_nrec_cb(transport->device, transport->nrec_id); + + if (transport->conn) + dbus_connection_unref(transport->conn); + + g_free(transport->configuration); + g_free(transport->path); + g_free(transport); +} + +static void headset_nrec_changed(struct audio_device *dev, gboolean nrec, + void *user_data) +{ + struct media_transport *transport = user_data; + + DBG(""); + + emit_property_changed(transport->conn, transport->path, + MEDIA_TRANSPORT_INTERFACE, "NREC", + DBUS_TYPE_BOOLEAN, &nrec); +} + +struct media_transport *media_transport_create(DBusConnection *conn, + struct media_endpoint *endpoint, + struct audio_device *device, + uint8_t *configuration, + size_t size) +{ + struct media_transport *transport; + const char *uuid; + static int fd = 0; + + transport = g_new0(struct media_transport, 1); + transport->conn = dbus_connection_ref(conn); + transport->device = device; + transport->endpoint = endpoint; + transport->configuration = g_new(uint8_t, size); + memcpy(transport->configuration, configuration, size); + transport->size = size; + transport->path = g_strdup_printf("%s/fd%d", device->path, fd++); + transport->fd = -1; + + uuid = media_endpoint_get_uuid(endpoint); + if (strcasecmp(uuid, A2DP_SOURCE_UUID) == 0 || + strcasecmp(uuid, A2DP_SINK_UUID) == 0) { + transport->resume = resume_a2dp; + transport->suspend = suspend_a2dp; + transport->cancel = cancel_a2dp; + transport->get_properties = get_properties_a2dp; + transport->set_property = set_property_a2dp; + } else if (strcasecmp(uuid, HFP_AG_UUID) == 0 || + strcasecmp(uuid, HSP_AG_UUID) == 0) { + transport->resume = resume_headset; + transport->suspend = suspend_headset; + transport->cancel = cancel_headset; + transport->get_properties = get_properties_headset; + transport->set_property = set_property_headset; + transport->nrec_id = headset_add_nrec_cb(device, + headset_nrec_changed, + transport); + } else + goto fail; + + if (g_dbus_register_interface(transport->conn, transport->path, + MEDIA_TRANSPORT_INTERFACE, + transport_methods, transport_signals, NULL, + transport, media_transport_free) == FALSE) { + error("Could not register transport %s", transport->path); + goto fail; + } + + return transport; + +fail: + media_transport_free(transport); + return NULL; +} + +const char *media_transport_get_path(struct media_transport *transport) +{ + return transport->path; +} + +void media_transport_update_delay(struct media_transport *transport, + uint16_t delay) +{ + /* Check if delay really changed */ + if (transport->delay == delay) + return; + + transport->delay = delay; + + emit_property_changed(transport->conn, transport->path, + MEDIA_TRANSPORT_INTERFACE, "Delay", + DBUS_TYPE_UINT16, &transport->delay); +} |