This exposes the ASHA profile implementation in the previous commit as
an audio profile.
The implementation registers a remote endpoint using a subset of the
MediaEndpoint1 interface, without any mechanism for setting/selecting a
configuration, as this is all static in the spec for now. Also exposed
on connection is a MediaTransport1 object, which can be used to obtain
an fd to stream to the device.
---
Makefile.plugins | 5 +
profiles/audio/asha.c | 336 ++++++++++++++++++++++++++++++++++++++++++
2 files changed, 341 insertions(+)
create mode 100644 profiles/audio/asha.c
diff --git a/Makefile.plugins b/Makefile.plugins
index 4aa2c9c92..e196e1d2e 100644
--- a/Makefile.plugins
+++ b/Makefile.plugins
@@ -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
diff --git a/profiles/audio/asha.c b/profiles/audio/asha.c
new file mode 100644
index 000000000..40871d707
--- /dev/null
+++ b/profiles/audio/asha.c
@@ -0,0 +1,336 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ *
+ * BlueZ - Bluetooth protocol stack for Linux
+ *
+ * Copyright (C) 2024 Asymptotic Inc.
+ *
+ * Author: Arun Raghavan <[email protected]>
+ *
+ *
+ */
+
+#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"
+
+static char *make_endpoint_path(struct bt_asha_device *asha)
+{
+ char *path;
+ int err;
+
+ err = asprintf(&path, "%s/asha", device_get_path(asha->device));
+ if (err < 0) {
+ error("Could not allocate path for remote %s",
+ device_get_path(asha->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 = data;
+ const char *side = 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 = data;
+ dbus_bool_t binaural = 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 = data;
+ DBusMessageIter array;
+ uint8_t *hisyncid = 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->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 = data;
+ dbus_uint16_t codecs = 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 = data;
+ const char *path;
+
+ path = device_get_path(asha->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 = data;
+ const char *path;
+
+ path = media_transport_get_path(asha->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;
+ 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 = bt_asha_device_new();
+ asha->device = device;
+
+ btd_service_set_user_data(service, asha);
+
+ return 0;
+}
+
+static void asha_source_device_remove(struct btd_service *service)
+{
+ struct bt_asha_device *asha;
+ 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 = btd_service_get_user_data(service);
+ if (!asha) {
+ /* Can this actually happen? */
+ DBG("Not handlihng ASHA profile");
+ return;
+ }
+
+ bt_asha_device_free(asha);
+}
+
+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)
+{
+ char *path;
+ const struct media_endpoint *asha_ep;
+
+ path = make_endpoint_path(asha);
+ 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, NULL) == FALSE) {
+ error("Could not register remote ep %s", path);
+ goto error;
+ }
+
+ asha_ep = media_endpoint_get_asha();
+ asha->transport = media_transport_create(asha->device, path, NULL, 0,
+ (void *) asha_ep, 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 bt_asha_device *asha = btd_service_get_user_data(service);
+ char addr[18];
+
+ ba2str(device_get_address(device), addr);
+ DBG("Accepting ASHA connection on %s", addr);
+
+ if (!asha) {
+ /* Can this actually happen? */
+ DBG("Not handling ASHA profile");
+ return -1;
+ }
+
+ if (!bt_asha_device_probe(asha))
+ return -1;
+
+ asha_source_endpoint_register(asha);
+
+ 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 = btd_service_get_user_data(service);
+ char addr[18];
+
+ ba2str(device_get_address(device), addr);
+ DBG("Disconnecting ASHA on %s", addr);
+
+ if (!asha) {
+ /* Can this actually happen? */
+ DBG("Not handlihng ASHA profile");
+ return -1;
+ }
+
+ asha_source_endpoint_unregister(asha);
+ bt_asha_device_reset(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)
--
2.45.0