From patchwork Thu Sep 15 09:54:11 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sathish Narasimman X-Patchwork-Id: 12977206 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 867FFECAAA1 for ; Thu, 15 Sep 2022 09:58:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229536AbiIOJ6I (ORCPT ); Thu, 15 Sep 2022 05:58:08 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42450 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229728AbiIOJ5g (ORCPT ); Thu, 15 Sep 2022 05:57:36 -0400 Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 03C789D64B for ; Thu, 15 Sep 2022 02:53:15 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1663235596; x=1694771596; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=0lYuQvPFb3/vWBRfmfsL+RYMmcVMs9a/xNkc+wwWHrY=; b=VfO7w/hg1L+z8CoBu9xjffYMp55JoaeNiG37XR7s/wyDjD+7wsLvQw2V m2k+lppwD8TJpgBOPeZ+9SiIjYqrlWzDfBhOKMi6grQr6nUY7uEN4tR8u jq6sgERYvjzfK7aMugKBVcqge6RkO5lH6vDFKBMNi8KnivudPAt3rsNOF Wi0d8SJl6QsrlrpnIFjAUuljIfu/DkqeI3n8AkPRTJJGHXxQ71tFEWGSO Px0Rp67UZDldVKUwdMYBaMq13TpEOMVc2XpjL3z2fV7ftoWoOIp0Hr/Kg /Xkvoct1FuCgFUjbW9hfJ+g29OruO1sxMharjFq1m8+ZwqoG/hn2JGs8j A==; X-IronPort-AV: E=McAfee;i="6500,9779,10470"; a="285709673" X-IronPort-AV: E=Sophos;i="5.93,317,1654585200"; d="scan'208";a="285709673" Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by orsmga101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 15 Sep 2022 02:52:43 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.93,317,1654585200"; d="scan'208";a="945886006" Received: from bsblt022.iind.intel.com ([10.224.186.21]) by fmsmga005.fm.intel.com with ESMTP; 15 Sep 2022 02:52:42 -0700 From: Sathish Narasimman To: linux-bluetooth@vger.kernel.org Cc: Sathish Narasimman Subject: [PATCH BlueZ v2 3/4] profiles: Add initial code for vcp plugin Date: Thu, 15 Sep 2022 15:24:11 +0530 Message-Id: <20220915095412.462210-3-sathish.narasimman@intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220915095412.462210-1-sathish.narasimman@intel.com> References: <20220915095412.462210-1-sathish.narasimman@intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-bluetooth@vger.kernel.org This adds initial code for vcp plugin which handles Volume Control Profile and Volume Control Service. --- Makefile.plugins | 5 + configure.ac | 4 + profiles/audio/vcp.c | 312 +++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 321 insertions(+) create mode 100644 profiles/audio/vcp.c diff --git a/Makefile.plugins b/Makefile.plugins index 213ed99edf2d..a3654980f86d 100644 --- a/Makefile.plugins +++ b/Makefile.plugins @@ -121,3 +121,8 @@ if BAP builtin_modules += bap builtin_sources += profiles/audio/bap.c endif + +if VCP +builtin_modules += vcp +builtin_sources += profiles/audio/vcp.c +endif diff --git a/configure.ac b/configure.ac index 1f76915b4349..79645e6917cc 100644 --- a/configure.ac +++ b/configure.ac @@ -199,6 +199,10 @@ AC_ARG_ENABLE(bap, AS_HELP_STRING([--disable-bap], [disable BAP profile]), [enable_bap=${enableval}]) AM_CONDITIONAL(BAP, test "${enable_bap}" != "no") +AC_ARG_ENABLE(vcp, AS_HELP_STRING([--disable-vcp], + [disable VCP profile]), [enable_vcp=${enableval}]) +AM_CONDITIONAL(VCP, test "${enable_vcp}" != "no") + AC_ARG_ENABLE(tools, AS_HELP_STRING([--disable-tools], [disable Bluetooth tools]), [enable_tools=${enableval}]) AM_CONDITIONAL(TOOLS, test "${enable_tools}" != "no") diff --git a/profiles/audio/vcp.c b/profiles/audio/vcp.c new file mode 100644 index 000000000000..34950d4070f2 --- /dev/null +++ b/profiles/audio/vcp.c @@ -0,0 +1,312 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * + * BlueZ - Bluetooth protocol stack for Linux + * + * Copyright (C) 2022 Intel Corporation. All rights reserved. + * + * + */ + +#ifdef HAVE_CONFIG_H +#include +#endif + +#define _GNU_SOURCE + +#include +#include +#include +#include +#include +#include +#include +#include + +#include + +#include "gdbus/gdbus.h" + +#include "lib/bluetooth.h" +#include "lib/hci.h" +#include "lib/sdp.h" +#include "lib/uuid.h" + +#include "src/dbus-common.h" +#include "src/shared/util.h" +#include "src/shared/att.h" +#include "src/shared/queue.h" +#include "src/shared/gatt-db.h" +#include "src/shared/gatt-client.h" +#include "src/shared/gatt-server.h" +#include "src/shared/vcp.h" + +#include "btio/btio.h" +#include "src/plugin.h" +#include "src/adapter.h" +#include "src/gatt-database.h" +#include "src/device.h" +#include "src/profile.h" +#include "src/service.h" +#include "src/log.h" +#include "src/error.h" + +#define VCS_UUID_STR "00001844-0000-1000-8000-00805f9b34fb" +#define MEDIA_ENDPOINT_INTERFACE "org.bluez.MediaEndpoint1" + +struct vcp_data { + struct btd_device *device; + struct btd_service *service; + struct bt_vcp *vcp; +}; + +static struct queue *sessions; + +static int vcp_disconnect(struct btd_service *service) +{ + DBG(""); + return 0; +} + +static struct vcp_data *vcp_data_new(struct btd_device *device) +{ + struct vcp_data *data; + + data = new0(struct vcp_data, 1); + data->device = device; + + return data; +} + +static void vcp_data_add(struct vcp_data *data) +{ + DBG("data %p", data); + + if (queue_find(sessions, NULL, data)) { + error("data %p already added", data); + return; + } + + if (!sessions) + sessions = queue_new(); + + queue_push_tail(sessions, data); + + if (data->service) + btd_service_set_user_data(data->service, data); +} + +static bool match_data(const void *data, const void *match_data) +{ + const struct vcp_data *vdata = data; + const struct bt_vcp *vcp = match_data; + + return vdata->vcp == vcp; +} + +static void vcp_data_free(struct vcp_data *data) +{ + if (data->service) { + btd_service_set_user_data(data->service, NULL); + bt_vcp_set_user_data(data->vcp, NULL); + } + + bt_vcp_unref(data->vcp); + free(data); +} + +static void vcp_data_remove(struct vcp_data *data) +{ + DBG("data %p", data); + + if (!queue_remove(sessions, data)) + return; + + vcp_data_free(data); + + if (queue_isempty(sessions)) { + queue_destroy(sessions, NULL); + sessions = NULL; + } +} + +static void vcp_detached(struct bt_vcp *vcp, void *user_data) +{ + struct vcp_data *data; + + DBG("%p", vcp); + + data = queue_find(sessions, match_data, vcp); + if (!data) { + error("Unable to find vcp session"); + return; + } + + vcp_data_remove(data); +} + +static void vcp_attached(struct bt_vcp *vcp, void *user_data) +{ + struct vcp_data *data; + struct bt_att *att; + struct btd_device *device; + + DBG("%p", vcp); + + data = queue_find(sessions, match_data, vcp); + if (data) + return; + + att = bt_vcp_get_att(vcp); + if (!att) + return; + + device = btd_adapter_find_device_by_fd(bt_att_get_fd(att)); + if (!device) { + error("Unable to find device"); + return; + } + + data = vcp_data_new(device); + data->vcp = vcp; + + vcp_data_add(data); + +} + +static int vcp_probe(struct btd_service *service) +{ + struct btd_device *device = btd_service_get_device(service); + struct btd_adapter *adapter = device_get_adapter(device); + struct btd_gatt_database *database = btd_adapter_get_database(adapter); + struct vcp_data *data = btd_service_get_user_data(service); + char addr[18]; + + ba2str(device_get_address(device), addr); + DBG("%s", addr); + + /* Ignore, if we were probed for this device already */ + if (data) { + error("Profile probed twice for the same device!"); + return -EINVAL; + } + + data = vcp_data_new(device); + data->service = service; + + data->vcp = bt_vcp_new(btd_gatt_database_get_db(database), + btd_device_get_gatt_db(device)); + if (!data->vcp) { + error("Unable to create VCP instance"); + free(data); + return -EINVAL; + } + + vcp_data_add(data); + + bt_vcp_set_user_data(data->vcp, service); + + return 0; +} + +static void vcp_remove(struct btd_service *service) +{ + struct btd_device *device = btd_service_get_device(service); + struct vcp_data *data; + char addr[18]; + + ba2str(device_get_address(device), addr); + DBG("%s", addr); + + data = btd_service_get_user_data(service); + if (!data) { + error("VCP service not handled by profile"); + return; + } + + vcp_data_remove(data); +} + +static int vcp_accept(struct btd_service *service) +{ + struct btd_device *device = btd_service_get_device(service); + struct bt_gatt_client *client = btd_device_get_gatt_client(device); + struct vcp_data *data = btd_service_get_user_data(service); + char addr[18]; + + ba2str(device_get_address(device), addr); + DBG("%s", addr); + + if (!data) { + error("VCP service not handled by profile"); + return -EINVAL; + } + + if (!bt_vcp_attach(data->vcp, client)) { + error("VCP unable to attach"); + return -EINVAL; + } + + btd_service_connecting_complete(service, 0); + + return 0; +} + +static int vcp_server_probe(struct btd_profile *p, + struct btd_adapter *adapter) +{ + struct btd_gatt_database *database = btd_adapter_get_database(adapter); + + DBG("VCP path %s", adapter_get_path(adapter)); + + bt_vcp_add_db(btd_gatt_database_get_db(database)); + + return 0; +} + +static void vcp_server_remove(struct btd_profile *p, + struct btd_adapter *adapter) +{ + DBG("VCP remove Adapter"); +} + +static struct btd_profile vcp_profile = { + .name = "vcp", + .priority = BTD_PROFILE_PRIORITY_MEDIUM, + .remote_uuid = VCS_UUID_STR, + + .device_probe = vcp_probe, + .device_remove = vcp_remove, + + .accept = vcp_accept, + .disconnect = vcp_disconnect, + + .adapter_probe = vcp_server_probe, + .adapter_remove = vcp_server_remove, +}; + +static unsigned int vcp_id = 0; + +static int vcp_init(void) +{ + if (!(g_dbus_get_flags() & G_DBUS_FLAG_ENABLE_EXPERIMENTAL)) { + warn("D-Bus experimental not enabled"); + return -ENOTSUP; + } + + btd_profile_register(&vcp_profile); + vcp_id = bt_vcp_register(vcp_attached, vcp_detached, NULL); + + return 0; +} + +static void vcp_exit(void) +{ + if (g_dbus_get_flags() & G_DBUS_FLAG_ENABLE_EXPERIMENTAL) { + btd_profile_unregister(&vcp_profile); + bt_vcp_unregister(vcp_id); + } +} + +BLUETOOTH_PLUGIN_DEFINE(vcp, VERSION, BLUETOOTH_PLUGIN_PRIORITY_DEFAULT, + vcp_init, vcp_exit)