@@ -147,3 +147,8 @@ if CSIP
builtin_modules += csip
builtin_sources += profiles/audio/csip.c
endif
+
+if ASHA
+builtin_modules += asha
+builtin_sources += profiles/audio/asha.c
+endif
@@ -216,6 +216,10 @@ AC_ARG_ENABLE(csip, AS_HELP_STRING([--disable-csip],
[disable CSIP profile]), [enable_csip=${enableval}])
AM_CONDITIONAL(CSIP, test "${enable_csip}" != "no")
+AC_ARG_ENABLE(asha, AS_HELP_STRING([--disable-asha],
+ [disable ASHA support]), [enable_asha=${enableval}])
+AM_CONDITIONAL(ASHA, test "${enable_asha}" != "no")
+
AC_ARG_ENABLE(tools, AS_HELP_STRING([--disable-tools],
[disable Bluetooth tools]), [enable_tools=${enableval}])
AM_CONDITIONAL(TOOLS, test "${enable_tools}" != "no")
new file mode 100644
@@ -0,0 +1,347 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ *
+ * BlueZ - Bluetooth protocol stack for Linux
+ *
+ * Copyright (C) 2024 Asymptotic Inc.
+ *
+ * Author: Arun Raghavan <arun@asymptotic.io>
+ *
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#define _GNU_SOURCE
+
+#include <stdbool.h>
+#include <stdint.h>
+
+#include <dbus/dbus.h>
+#include <glib.h>
+
+#include "gdbus/gdbus.h"
+#include "lib/bluetooth.h"
+#include "lib/uuid.h"
+
+#include "src/dbus-common.h"
+#include "src/adapter.h"
+#include "src/device.h"
+#include "src/log.h"
+#include "src/plugin.h"
+#include "src/profile.h"
+#include "src/service.h"
+#include "src/shared/asha.h"
+#include "src/shared/util.h"
+
+#include "profiles/audio/media.h"
+#include "profiles/audio/transport.h"
+
+#define MEDIA_ENDPOINT_INTERFACE "org.bluez.MediaEndpoint1"
+
+struct bt_asha_device {
+ struct bt_asha *asha;
+ struct btd_device *device;
+ struct media_transport *transport;
+};
+
+static char *make_endpoint_path(struct bt_asha_device *asha_dev)
+{
+ char *path;
+ int err;
+
+ err = asprintf(&path, "%s/asha", device_get_path(asha_dev->device));
+ if (err < 0) {
+ error("Could not allocate path for remote %s",
+ device_get_path(asha_dev->device));
+ return NULL;
+ }
+
+ return path;
+
+}
+
+static gboolean get_uuid(const GDBusPropertyTable *property,
+ DBusMessageIter *iter, void *data)
+{
+ const char *uuid;
+
+ uuid = ASHA_PROFILE_UUID;
+
+ dbus_message_iter_append_basic(iter, DBUS_TYPE_STRING, &uuid);
+
+ return TRUE;
+}
+
+static gboolean get_side(const GDBusPropertyTable *property,
+ DBusMessageIter *iter, void *data)
+{
+ struct bt_asha_device *asha_dev = data;
+ const char *side = asha_dev->asha->right_side ? "right" : "left";
+
+ /* Use a string in case we want to support more types in the future */
+ dbus_message_iter_append_basic(iter, DBUS_TYPE_STRING, &side);
+
+ return TRUE;
+}
+
+
+static gboolean get_binaural(const GDBusPropertyTable *property,
+ DBusMessageIter *iter, void *data)
+{
+ struct bt_asha_device *asha_dev = data;
+ dbus_bool_t binaural = asha_dev->asha->binaural;
+
+ dbus_message_iter_append_basic(iter, DBUS_TYPE_BOOLEAN, &binaural);
+
+ return TRUE;
+}
+
+static gboolean get_hisyncid(const GDBusPropertyTable *property,
+ DBusMessageIter *iter, void *data)
+{
+ struct bt_asha_device *asha_dev = data;
+ DBusMessageIter array;
+ uint8_t *hisyncid = asha_dev->asha->hisyncid;
+
+ dbus_message_iter_open_container(iter, DBUS_TYPE_ARRAY,
+ DBUS_TYPE_BYTE_AS_STRING, &array);
+
+ dbus_message_iter_append_fixed_array(&array, DBUS_TYPE_BYTE,
+ &hisyncid, sizeof(asha_dev->asha->hisyncid));
+
+ dbus_message_iter_close_container(iter, &array);
+
+ return TRUE;
+}
+
+static gboolean get_codecs(const GDBusPropertyTable *property,
+ DBusMessageIter *iter, void *data)
+{
+ struct bt_asha_device *asha_dev = data;
+ dbus_uint16_t codecs = asha_dev->asha->codec_ids;
+
+ dbus_message_iter_append_basic(iter, DBUS_TYPE_UINT16, &codecs);
+
+ return TRUE;
+}
+
+static gboolean get_device(const GDBusPropertyTable *property,
+ DBusMessageIter *iter, void *data)
+{
+ struct bt_asha_device *asha_dev = data;
+ const char *path;
+
+ path = device_get_path(asha_dev->device);
+
+ dbus_message_iter_append_basic(iter, DBUS_TYPE_OBJECT_PATH, &path);
+
+ return TRUE;
+}
+
+static gboolean get_transport(const GDBusPropertyTable *property,
+ DBusMessageIter *iter, void *data)
+{
+ struct bt_asha_device *asha_dev = data;
+ const char *path;
+
+ path = media_transport_get_path(asha_dev->transport);
+
+ dbus_message_iter_append_basic(iter, DBUS_TYPE_OBJECT_PATH, &path);
+
+ return TRUE;
+}
+
+static int asha_source_device_probe(struct btd_service *service)
+{
+ struct bt_asha_device *asha_dev;
+ struct btd_device *device = btd_service_get_device(service);
+ char addr[18];
+
+ ba2str(device_get_address(device), addr);
+ DBG("Probing ASHA device %s", addr);
+
+ asha_dev = g_new0(struct bt_asha_device, 1);
+
+ asha_dev->device = device;
+ asha_dev->asha = bt_asha_new(device_get_address(device));
+
+ btd_service_set_user_data(service, asha_dev);
+
+ return 0;
+}
+
+static void asha_source_device_remove(struct btd_service *service)
+{
+ struct bt_asha_device *asha_dev;
+ struct btd_device *device = btd_service_get_device(service);
+ char addr[18];
+
+ ba2str(device_get_address(device), addr);
+ DBG("Removing ASHA device %s", addr);
+
+ asha_dev = btd_service_get_user_data(service);
+ if (!asha_dev) {
+ /* Can this actually happen? */
+ DBG("Not handlihng ASHA profile");
+ return;
+ }
+
+ bt_asha_free(asha_dev->asha);
+ g_free(asha_dev);
+}
+
+static const GDBusMethodTable asha_ep_methods[] = {
+ { },
+};
+
+static const GDBusPropertyTable asha_ep_properties[] = {
+ { "UUID", "s", get_uuid, NULL, NULL,
+ G_DBUS_PROPERTY_FLAG_EXPERIMENTAL },
+ { "Side", "s", get_side, NULL, NULL,
+ G_DBUS_PROPERTY_FLAG_EXPERIMENTAL },
+ { "Binaural", "b", get_binaural, NULL, NULL,
+ G_DBUS_PROPERTY_FLAG_EXPERIMENTAL },
+ { "HiSyncId", "ay", get_hisyncid, NULL, NULL,
+ G_DBUS_PROPERTY_FLAG_EXPERIMENTAL },
+ { "Codecs", "q", get_codecs, NULL, NULL,
+ G_DBUS_PROPERTY_FLAG_EXPERIMENTAL },
+ { "Device", "o", get_device, NULL, NULL,
+ G_DBUS_PROPERTY_FLAG_EXPERIMENTAL },
+ { "Transport", "o", get_transport, NULL, NULL,
+ G_DBUS_PROPERTY_FLAG_EXPERIMENTAL },
+ { }
+};
+
+static void asha_source_endpoint_register(struct bt_asha_device *asha_dev)
+{
+ char *path;
+ const struct media_endpoint *asha_ep;
+
+ path = make_endpoint_path(asha_dev);
+ if (!path)
+ goto error;
+
+ if (g_dbus_register_interface(btd_get_dbus_connection(),
+ path, MEDIA_ENDPOINT_INTERFACE,
+ asha_ep_methods, NULL,
+ asha_ep_properties,
+ asha_dev, NULL) == FALSE) {
+ error("Could not register remote ep %s", path);
+ goto error;
+ }
+
+ asha_ep = media_endpoint_get_asha();
+ asha_dev->transport = media_transport_create(asha_dev->device, path,
+ NULL, 0, (void *) asha_ep, asha_dev->asha);
+
+error:
+ if (path)
+ free(path);
+}
+
+static void asha_source_endpoint_unregister(struct bt_asha_device *asha)
+{
+ char *path;
+
+ path = make_endpoint_path(asha);
+ if (!path)
+ goto error;
+
+ g_dbus_unregister_interface(btd_get_dbus_connection(),
+ path, MEDIA_ENDPOINT_INTERFACE);
+
+ if (asha->transport) {
+ media_transport_destroy(asha->transport);
+ asha->transport = NULL;
+ }
+
+error:
+ if (path)
+ free(path);
+}
+
+static int asha_source_accept(struct btd_service *service)
+{
+ struct btd_device *device = btd_service_get_device(service);
+ struct gatt_db *db = btd_device_get_gatt_db(device);
+ struct bt_gatt_client *client = btd_device_get_gatt_client(device);
+ struct bt_asha_device *asha_dev = btd_service_get_user_data(service);
+ char addr[18];
+
+ ba2str(device_get_address(device), addr);
+ DBG("Accepting ASHA connection on %s", addr);
+
+ if (!asha_dev) {
+ /* Can this actually happen? */
+ DBG("Not handling ASHA profile");
+ return -1;
+ }
+
+ if (!bt_asha_probe(asha_dev->asha,db, client))
+ return -1;
+
+ asha_source_endpoint_register(asha_dev);
+
+ btd_service_connecting_complete(service, 0);
+
+ return 0;
+}
+
+static int asha_source_disconnect(struct btd_service *service)
+{
+ struct btd_device *device = btd_service_get_device(service);
+ struct bt_asha_device *asha_dev = btd_service_get_user_data(service);
+ char addr[18];
+
+ ba2str(device_get_address(device), addr);
+ DBG("Disconnecting ASHA on %s", addr);
+
+ if (!asha_dev) {
+ /* Can this actually happen? */
+ DBG("Not handlihng ASHA profile");
+ return -1;
+ }
+
+ asha_source_endpoint_unregister(asha_dev);
+ bt_asha_reset(asha_dev->asha);
+
+ btd_service_disconnecting_complete(service, 0);
+
+ return 0;
+}
+
+static struct btd_profile asha_source_profile = {
+ .name = "asha-source",
+ .priority = BTD_PROFILE_PRIORITY_MEDIUM,
+ .remote_uuid = ASHA_PROFILE_UUID,
+ .experimental = true,
+
+ .device_probe = asha_source_device_probe,
+ .device_remove = asha_source_device_remove,
+
+ .auto_connect = true,
+ .accept = asha_source_accept,
+ .disconnect = asha_source_disconnect,
+};
+
+static int asha_init(void)
+{
+ int err;
+
+ err = btd_profile_register(&asha_source_profile);
+ if (err)
+ return err;
+
+ return 0;
+}
+
+static void asha_exit(void)
+{
+ btd_profile_unregister(&asha_source_profile);
+}
+
+BLUETOOTH_PLUGIN_DEFINE(asha, VERSION, BLUETOOTH_PLUGIN_PRIORITY_DEFAULT,
+ asha_init, asha_exit)
@@ -38,6 +38,7 @@
#include "src/log.h"
#include "src/error.h"
#include "src/gatt-database.h"
+#include "src/shared/asha.h"
#include "src/shared/util.h"
#include "src/shared/queue.h"
#include "src/shared/att.h"
@@ -88,6 +89,7 @@ struct endpoint_request {
struct media_endpoint {
struct a2dp_sep *sep;
struct bt_bap_pac *pac;
+ struct bt_asha_device *asha;
char *sender; /* Endpoint DBus bus id */
char *path; /* Endpoint object path */
char *uuid; /* Endpoint property UUID */
@@ -1330,6 +1332,12 @@ static bool endpoint_init_broadcast_sink(struct media_endpoint *endpoint,
return endpoint_init_pac(endpoint, BT_BAP_BCAST_SINK, err);
}
+static bool endpoint_init_asha(struct media_endpoint *endpoint,
+ int *err)
+{
+ return true;
+}
+
static bool endpoint_properties_exists(const char *uuid,
struct btd_device *dev,
void *user_data)
@@ -1454,6 +1462,11 @@ static bool experimental_bcast_sink_ep_supported(struct btd_adapter *adapter)
return g_dbus_get_flags() & G_DBUS_FLAG_ENABLE_EXPERIMENTAL;
}
+static bool experimental_asha_supported(struct btd_adapter *adapter)
+{
+ return g_dbus_get_flags() & G_DBUS_FLAG_ENABLE_EXPERIMENTAL;
+}
+
static const struct media_endpoint_init {
const char *uuid;
bool (*func)(struct media_endpoint *endpoint, int *err);
@@ -1471,6 +1484,8 @@ static const struct media_endpoint_init {
experimental_broadcaster_ep_supported },
{ BAA_SERVICE_UUID, endpoint_init_broadcast_sink,
experimental_bcast_sink_ep_supported },
+ { ASHA_PROFILE_UUID, endpoint_init_asha,
+ experimental_asha_supported },
};
static struct media_endpoint *
@@ -3393,3 +3408,18 @@ bool media_endpoint_is_broadcast(struct media_endpoint *endpoint)
return false;
}
+
+const struct media_endpoint *media_endpoint_get_asha(void)
+{
+ /*
+ * Because ASHA does not require the application to register an
+ * endpoint, we need a minimal media_endpoint for transport creation to
+ * work, so let's create one
+ */
+ static struct media_endpoint asha_endpoint = {
+ .uuid = ASHA_PROFILE_UUID,
+ .codec = 0x2, /* Currently on G.722 is defined by the spec */
+ };
+
+ return &asha_endpoint;
+}
@@ -24,3 +24,5 @@ struct btd_adapter *media_endpoint_get_btd_adapter(
struct media_endpoint *endpoint);
bool media_endpoint_is_broadcast(struct media_endpoint *endpoint);
int8_t media_player_get_device_volume(struct btd_device *device);
+
+const struct media_endpoint *media_endpoint_get_asha(void);
@@ -32,6 +32,7 @@
#include "src/log.h"
#include "src/error.h"
+#include "src/shared/asha.h"
#include "src/shared/util.h"
#include "src/shared/queue.h"
#include "src/shared/bap.h"
@@ -115,7 +116,7 @@ struct media_transport {
char *path; /* Transport object path */
struct btd_device *device; /* Transport device */
struct btd_adapter *adapter; /* Transport adapter bcast*/
- const char *remote_endpoint; /* Transport remote SEP */
+ char *remote_endpoint; /* Transport remote SEP */
struct media_endpoint *endpoint; /* Transport endpoint */
struct media_owner *owner; /* Transport owner */
uint8_t *configuration; /* Transport configuration */
@@ -219,6 +220,9 @@ void media_transport_destroy(struct media_transport *transport)
g_dbus_unregister_interface(btd_get_dbus_connection(), path,
MEDIA_TRANSPORT_INTERFACE);
+ if (transport->remote_endpoint)
+ g_free(transport->remote_endpoint);
+
g_free(path);
}
@@ -1199,6 +1203,32 @@ static const GDBusPropertyTable transport_bap_bc_properties[] = {
{ }
};
+static gboolean get_asha_delay(const GDBusPropertyTable *property,
+ DBusMessageIter *iter, void *data)
+{
+ struct media_transport *transport = data;
+ struct bt_asha *asha = transport->data;
+ uint16_t delay;
+
+ // Delay property is in 1/10ths of ms, while ASHA RenderDelay is in ms
+ delay = bt_asha_get_render_delay(asha) * 10;
+
+ dbus_message_iter_append_basic(iter, DBUS_TYPE_UINT16, &delay);
+
+ return TRUE;
+}
+
+static const GDBusPropertyTable transport_asha_properties[] = {
+ { "Device", "o", get_device },
+ { "Endpoint", "o", get_endpoint, NULL, endpoint_exists },
+ { "UUID", "s", get_uuid },
+ { "Codec", "y", get_codec },
+ { "State", "s", get_state },
+ { "Delay", "q", get_asha_delay },
+ { "Volume", "q", get_volume, set_volume, volume_exists },
+ { }
+};
+
static void transport_a2dp_destroy(void *data)
{
struct a2dp_transport *a2dp = data;
@@ -1713,6 +1743,161 @@ static void *transport_bap_init(struct media_transport *transport, void *stream)
return bap;
}
+static void asha_transport_sync_state(struct media_transport *transport,
+ struct bt_asha *asha)
+{
+ switch (bt_asha_get_state(asha)) {
+ case ASHA_STOPPED:
+ transport_set_state(transport, TRANSPORT_STATE_IDLE);
+ break;
+ case ASHA_STARTING:
+ transport_set_state(transport, TRANSPORT_STATE_REQUESTING);
+ break;
+ case ASHA_STARTED:
+ transport_set_state(transport, TRANSPORT_STATE_ACTIVE);
+ break;
+ case ASHA_STOPPING:
+ transport_set_state(transport, TRANSPORT_STATE_SUSPENDING);
+ break;
+ }
+}
+
+static void asha_transport_state_cb(int status, void *user_data)
+{
+ struct media_owner *owner = user_data;
+ struct media_transport *transport = owner->transport;
+ struct bt_asha *asha = transport->data;
+ enum bt_asha_state_t state;
+
+ state = bt_asha_get_state(asha);
+
+ if (state == ASHA_STARTED) {
+ int fd;
+ uint16_t imtu, omtu;
+ gboolean ret;
+
+ fd = bt_asha_get_fd(asha);
+ imtu = bt_asha_get_imtu(asha);
+ omtu = bt_asha_get_omtu(asha);
+
+ media_transport_set_fd(transport, fd, imtu, omtu);
+
+ owner->pending->id = 0;
+ ret = g_dbus_send_reply(btd_get_dbus_connection(),
+ owner->pending->msg,
+ DBUS_TYPE_UNIX_FD, &fd,
+ DBUS_TYPE_UINT16, &imtu,
+ DBUS_TYPE_UINT16, &omtu,
+ DBUS_TYPE_INVALID);
+ if (!ret) {
+ media_transport_remove_owner(transport);
+ return;
+ }
+
+ media_owner_remove(owner);
+ } else if (state == ASHA_STOPPED) {
+ if (owner->pending) {
+ owner->pending->id = 0;
+ media_request_reply(owner->pending, 0);
+ media_owner_remove(owner);
+ }
+
+ media_transport_remove_owner(transport);
+ }
+
+ asha_transport_sync_state(transport, asha);
+}
+
+static guint transport_asha_resume(struct media_transport *transport,
+ struct media_owner *owner)
+{
+ struct bt_asha *asha = transport->data;
+ guint ret;
+
+ ret = bt_asha_connect_socket(asha);
+ if (ret < 0)
+ return ret;
+
+ ret = bt_asha_start(asha, asha_transport_state_cb, owner);
+ asha_transport_sync_state(transport, asha);
+
+ return ret;
+}
+
+static guint transport_asha_suspend(struct media_transport *transport,
+ struct media_owner *owner)
+{
+ struct bt_asha *asha = transport->data;
+ guint ret = 0;
+
+ if (owner) {
+ ret = bt_asha_stop(asha, asha_transport_state_cb, owner);
+ asha_transport_sync_state(transport, asha);
+ } else {
+ ret = bt_asha_stop(asha, NULL, NULL);
+ /* We won't have a callback to set the final state */
+ transport_set_state(transport, TRANSPORT_STATE_IDLE);
+ }
+
+ return ret;
+}
+
+static void transport_asha_cancel(struct media_transport *transport, guint id)
+{
+ struct bt_asha *asha = transport->data;
+ enum bt_asha_state_t state = bt_asha_get_state(asha);
+
+ if (id != asha->resume_id) {
+ /* Not current, ignore */
+ DBG("Ignoring cancel request for id %d", id);
+ return;
+ }
+
+ if (state == ASHA_STARTING || state == ASHA_STARTED) {
+ DBG("Cancel requested, stopping");
+ bt_asha_stop(asha, NULL, NULL);
+ /* We won't have a callback to set the final state */
+ transport_set_state(transport, TRANSPORT_STATE_IDLE);
+ } else if (state == ASHA_STOPPING) {
+ DBG("Cancel requested, resetting transport state");
+ /* We already dispatched a stop, just reset our state */
+ bt_asha_state_reset(asha);
+ transport_set_state(transport, TRANSPORT_STATE_IDLE);
+ }
+}
+
+static int8_t transport_asha_get_volume(struct media_transport *transport)
+{
+ struct bt_asha *asha = transport->data;
+ int8_t volume;
+ int scaled_volume;
+
+ volume = bt_asha_get_volume(asha);
+
+ /* Convert -128-0 to 0-127 */
+ scaled_volume = ((((int) volume) + 128) * 127) / 128;
+
+ return scaled_volume;
+}
+
+static int transport_asha_set_volume(struct media_transport *transport,
+ int8_t volume)
+{
+ struct bt_asha *asha = transport->data;
+ int scaled_volume;
+
+ /* Convert 0-127 to -128-0 */
+ scaled_volume = ((((int) volume) * 128) / 127) - 128;
+
+ return bt_asha_set_volume(asha, scaled_volume) ? 0 : -EIO;
+}
+
+static void *transport_asha_init(struct media_transport *transport, void *data)
+{
+ /* We just store the struct asha_device on the transport */
+ return data;
+}
+
#define TRANSPORT_OPS(_uuid, _props, _set_owner, _remove_owner, _init, \
_resume, _suspend, _cancel, _set_state, _get_stream, \
_get_volume, _set_volume, _destroy) \
@@ -1754,6 +1939,14 @@ static void *transport_bap_init(struct media_transport *transport, void *stream)
#define BAP_BC_OPS(_uuid) \
BAP_OPS(_uuid, transport_bap_bc_properties, NULL, NULL)
+#define ASHA_OPS(_uuid) \
+ TRANSPORT_OPS(_uuid, transport_asha_properties, NULL, NULL, \
+ transport_asha_init, \
+ transport_asha_resume, transport_asha_suspend, \
+ transport_asha_cancel, NULL, NULL, \
+ transport_asha_get_volume, transport_asha_set_volume, \
+ NULL)
+
static const struct media_transport_ops transport_ops[] = {
A2DP_OPS(A2DP_SOURCE_UUID, transport_a2dp_src_init,
transport_a2dp_src_set_volume,
@@ -1765,6 +1958,7 @@ static const struct media_transport_ops transport_ops[] = {
BAP_UC_OPS(PAC_SINK_UUID),
BAP_BC_OPS(BCAA_SERVICE_UUID),
BAP_BC_OPS(BAA_SERVICE_UUID),
+ ASHA_OPS(ASHA_PROFILE_UUID),
};
static const struct media_transport_ops *
@@ -1802,7 +1996,7 @@ struct media_transport *media_transport_create(struct btd_device *device,
transport->endpoint = endpoint;
transport->configuration = util_memdup(configuration, size);
transport->size = size;
- transport->remote_endpoint = remote_endpoint;
+ transport->remote_endpoint = g_strdup(remote_endpoint);
if (device)
transport->path = g_strdup_printf("%s/fd%d",