From patchwork Tue Oct 11 11:31:15 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sathish Narasimman X-Patchwork-Id: 614322 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 DB034C433F5 for ; Tue, 11 Oct 2022 11:30:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229865AbiJKLab (ORCPT ); Tue, 11 Oct 2022 07:30:31 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39636 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229880AbiJKLa1 (ORCPT ); Tue, 11 Oct 2022 07:30:27 -0400 Received: from mga06.intel.com (mga06b.intel.com [134.134.136.31]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3F4536C10C for ; Tue, 11 Oct 2022 04:30:25 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1665487825; x=1697023825; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=NnWy9ySSBrEEXEGgo6v6sDc2YbcWd8NFsmoMjr16Dkw=; b=EvVKVeW98GlooqkACf8lXi7cG9iR29jkqfJ/7cv/gp93eQNOrYESbRNA Z9BvGKao/fhILaZGEqWz6QQVvvCjOpPGm6Vyoxp0Anu4pWpvVAiYnxgwf +CyJue34tkADdR+OhlnO4gKCHGAO0sGqxqM1ww5hbqGdf4sovXucSW+IN T00cQ52xDnLsSjmQFTnZXYavGuvud7Wag4dpIwlmU/F/HYH/QSdgZ3/o1 zorCqBBAs2sM+WK+KaA1GSqa/7e67CPcvKISZBQGwd1Fi2fOToQW5+xpz PZlX4NoDLbVI588drLsLEs+vPusdxP8uY59GOmgaDSRUBcid25Nq4IzYQ w==; X-IronPort-AV: E=McAfee;i="6500,9779,10496"; a="366469734" X-IronPort-AV: E=Sophos;i="5.95,176,1661842800"; d="scan'208";a="366469734" Received: from orsmga003.jf.intel.com ([10.7.209.27]) by orsmga104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Oct 2022 04:30:19 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6500,9779,10496"; a="577406192" X-IronPort-AV: E=Sophos;i="5.95,176,1661842800"; d="scan'208";a="577406192" Received: from intel-latitude-e5450.iind.intel.com ([10.224.186.32]) by orsmga003.jf.intel.com with ESMTP; 11 Oct 2022 04:30:17 -0700 From: Sathish Narasimman To: linux-bluetooth@vger.kernel.org Cc: Sathish Narasimman Subject: [PATCH BlueZ v3 2/3] shared/vcp: Add callback to update media volume Date: Tue, 11 Oct 2022 17:01:15 +0530 Message-Id: <20221011113116.70514-2-sathish.narasimman@intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20221011113116.70514-1-sathish.narasimman@intel.com> References: <20221011113116.70514-1-sathish.narasimman@intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-bluetooth@vger.kernel.org Add support for callback functions to update media transport volume. Fix to register debug functions. Also invoke vcp_attached function the right place. Fix check for existing session if available and attach. --- src/shared/vcp.c | 139 +++++++++++++++++++++++++++++++++++++++++------ src/shared/vcp.h | 7 +++ 2 files changed, 130 insertions(+), 16 deletions(-) diff --git a/src/shared/vcp.c b/src/shared/vcp.c index 5459cf892a7d..8e1964234338 100644 --- a/src/shared/vcp.c +++ b/src/shared/vcp.c @@ -41,6 +41,11 @@ struct bt_vcp_db { struct bt_vcs *vcs; }; +struct ev_cb { + const struct bt_vcp_vr_ops *ops; + void *data; +}; + typedef void (*vcp_func_t)(struct bt_vcp *vcp, bool success, uint8_t att_ecode, const uint8_t *value, uint16_t length, void *user_data); @@ -89,11 +94,16 @@ struct bt_vcp { unsigned int vstate_id; unsigned int vflag_id; + unsigned int disconn_id; struct queue *notify; struct queue *pending; bt_vcp_debug_func_t debug_func; bt_vcp_destroy_func_t debug_destroy; + + struct bt_vcp_vr_ops *ops; + struct ev_cb *cb; + void *debug_data; void *user_data; }; @@ -124,6 +134,18 @@ static struct queue *vcp_db; static struct queue *vcp_cbs; static struct queue *sessions; +static void vcp_debug(struct bt_vcp *vcp, const char *format, ...) +{ + va_list ap; + + if (!vcp || !format || !vcp->debug_func) + return; + + va_start(ap, format); + util_debug_va(vcp->debug_func, vcp->debug_data, format, ap); + va_end(ap); +} + static void *iov_pull_mem(struct iovec *iov, size_t len) { void *data = iov->iov_base; @@ -183,12 +205,17 @@ static void vcp_detached(void *data, void *user_data) void bt_vcp_detach(struct bt_vcp *vcp) { + DBG(vcp, "%p", vcp); + if (!queue_remove(sessions, vcp)) return; bt_gatt_client_unref(vcp->client); vcp->client = NULL; + bt_att_unregister_disconnect(vcp->att, vcp->disconn_id); + vcp->att = NULL; + queue_foreach(vcp_cbs, vcp_detached, vcp); } @@ -267,24 +294,14 @@ void bt_vcp_unref(struct bt_vcp *vcp) vcp_free(vcp); } -static void vcp_debug(struct bt_vcp *vcp, const char *format, ...) -{ - va_list ap; - - if (!vcp || !format || !vcp->debug_func) - return; - - va_start(ap, format); - util_debug_va(vcp->debug_func, vcp->debug_data, format, ap); - va_end(ap); -} - static void vcp_disconnected(int err, void *user_data) { struct bt_vcp *vcp = user_data; DBG(vcp, "vcp %p disconnected err %d", vcp, err); + vcp->disconn_id = 0; + bt_vcp_detach(vcp); } @@ -303,12 +320,9 @@ static struct bt_vcp *vcp_get_session(struct bt_att *att, struct gatt_db *db) vcp = bt_vcp_new(db, NULL); vcp->att = att; - bt_att_register_disconnect(att, vcp_disconnected, vcp, NULL); - bt_vcp_attach(vcp, NULL); return vcp; - } static uint8_t vcs_rel_vol_down(struct bt_vcs *vcs, struct bt_vcp *vcp, @@ -317,6 +331,7 @@ static uint8_t vcs_rel_vol_down(struct bt_vcs *vcs, struct bt_vcp *vcp, struct bt_vcp_db *vdb; struct vol_state *vstate; uint8_t *change_counter; + struct ev_cb *cb = vcp->cb; DBG(vcp, "Volume Down"); @@ -344,6 +359,9 @@ static uint8_t vcs_rel_vol_down(struct bt_vcs *vcs, struct bt_vcp *vcp, vstate->vol_set = MAX((vstate->vol_set - VCP_STEP_SIZE), 0); vstate->counter = -~vstate->counter; /*Increment Change Counter*/ + if (cb && cb->ops && cb->ops->set_volume) + cb->ops->set_volume(vcp, vstate->vol_set, cb->data); + gatt_db_attribute_notify(vdb->vcs->vs, (void *)vstate, sizeof(struct vol_state), bt_vcp_get_att(vcp)); @@ -356,6 +374,7 @@ static uint8_t vcs_rel_vol_up(struct bt_vcs *vcs, struct bt_vcp *vcp, struct bt_vcp_db *vdb; struct vol_state *vstate; uint8_t *change_counter; + struct ev_cb *cb = vcp->cb; DBG(vcp, "Volume Up"); @@ -383,6 +402,9 @@ static uint8_t vcs_rel_vol_up(struct bt_vcs *vcs, struct bt_vcp *vcp, vstate->vol_set = MIN((vstate->vol_set + VCP_STEP_SIZE), 255); vstate->counter = -~vstate->counter; /*Increment Change Counter*/ + if (cb && cb->ops && cb->ops->set_volume) + cb->ops->set_volume(vcp, vstate->vol_set, cb->data); + gatt_db_attribute_notify(vdb->vcs->vs, (void *)vstate, sizeof(struct vol_state), bt_vcp_get_att(vcp)); @@ -395,6 +417,7 @@ static uint8_t vcs_unmute_rel_vol_down(struct bt_vcs *vcs, struct bt_vcp *vcp, struct bt_vcp_db *vdb; struct vol_state *vstate; uint8_t *change_counter; + struct ev_cb *cb = vcp->cb; DBG(vcp, "Un Mute and Volume Down"); @@ -423,6 +446,9 @@ static uint8_t vcs_unmute_rel_vol_down(struct bt_vcs *vcs, struct bt_vcp *vcp, vstate->vol_set = MAX((vstate->vol_set - VCP_STEP_SIZE), 0); vstate->counter = -~vstate->counter; /*Increment Change Counter*/ + if (cb && cb->ops && cb->ops->set_volume) + cb->ops->set_volume(vcp, vstate->vol_set, cb->data); + gatt_db_attribute_notify(vdb->vcs->vs, (void *)vstate, sizeof(struct vol_state), bt_vcp_get_att(vcp)); @@ -435,6 +461,7 @@ static uint8_t vcs_unmute_rel_vol_up(struct bt_vcs *vcs, struct bt_vcp *vcp, struct bt_vcp_db *vdb; struct vol_state *vstate; uint8_t *change_counter; + struct ev_cb *cb = vcp->cb; DBG(vcp, "UN Mute and Volume Up"); @@ -463,6 +490,9 @@ static uint8_t vcs_unmute_rel_vol_up(struct bt_vcs *vcs, struct bt_vcp *vcp, vstate->vol_set = MIN((vstate->vol_set + VCP_STEP_SIZE), 255); vstate->counter = -~vstate->counter; /*Increment Change Counter*/ + if (cb && cb->ops && cb->ops->set_volume) + cb->ops->set_volume(vcp, vstate->vol_set, cb->data); + gatt_db_attribute_notify(vdb->vcs->vs, (void *)vstate, sizeof(struct vol_state), bt_vcp_get_att(vcp)); @@ -475,6 +505,7 @@ static uint8_t vcs_set_absolute_vol(struct bt_vcs *vcs, struct bt_vcp *vcp, struct bt_vcp_db *vdb; struct vol_state *vstate; struct bt_vcs_ab_vol *req; + struct ev_cb *cb = vcp->cb; DBG(vcp, "Set Absolute Volume"); @@ -502,6 +533,9 @@ static uint8_t vcs_set_absolute_vol(struct bt_vcs *vcs, struct bt_vcp *vcp, vstate->vol_set = req->vol_set; vstate->counter = -~vstate->counter; /*Increment Change Counter*/ + if (cb && cb->ops && cb->ops->set_volume) + cb->ops->set_volume(vcp, vstate->vol_set, cb->data); + gatt_db_attribute_notify(vdb->vcs->vs, (void *)vstate, sizeof(struct vol_state), bt_vcp_get_att(vcp)); @@ -514,6 +548,7 @@ static uint8_t vcs_unmute(struct bt_vcs *vcs, struct bt_vcp *vcp, struct bt_vcp_db *vdb; struct vol_state *vstate; uint8_t *change_counter; + struct ev_cb *cb = vcp->cb; DBG(vcp, "Un Mute"); @@ -541,6 +576,9 @@ static uint8_t vcs_unmute(struct bt_vcs *vcs, struct bt_vcp *vcp, vstate->mute = 0x00; vstate->counter = -~vstate->counter; /*Increment Change Counter*/ + if (cb && cb->ops && cb->ops->set_volume) + cb->ops->set_volume(vcp, vstate->vol_set, cb->data); + gatt_db_attribute_notify(vdb->vcs->vs, (void *)vstate, sizeof(struct vol_state), bt_vcp_get_att(vcp)); @@ -553,6 +591,7 @@ static uint8_t vcs_mute(struct bt_vcs *vcs, struct bt_vcp *vcp, struct bt_vcp_db *vdb; struct vol_state *vstate; uint8_t *change_counter; + struct ev_cb *cb = vcp->cb; DBG(vcp, "MUTE"); @@ -580,6 +619,13 @@ static uint8_t vcs_mute(struct bt_vcs *vcs, struct bt_vcp *vcp, vstate->mute = 0x01; vstate->counter = -~vstate->counter; /*Increment Change Counter*/ + if (cb && cb->ops && cb->ops->set_volume) + cb->ops->set_volume(vcp, 0, cb->data); + + gatt_db_attribute_notify(vdb->vcs->vs, (void *)vstate, + sizeof(struct vol_state), + bt_vcp_get_att(vcp)); + return 0; } @@ -689,8 +735,10 @@ static void vcs_state_read(struct gatt_db_attribute *attrib, void *user_data) { struct bt_vcs *vcs = user_data; + struct bt_vcp *vcp = vcp_get_session(att, vcs->vdb->db); struct iovec iov; + DBG(vcp, "VCP State Read"); iov.iov_base = vcs->vstate; iov.iov_len = sizeof(*vcs->vstate); @@ -704,8 +752,10 @@ static void vcs_flag_read(struct gatt_db_attribute *attrib, void *user_data) { struct bt_vcs *vcs = user_data; + struct bt_vcp *vcp = vcp_get_session(att, vcs->vdb->db); struct iovec iov; + DBG(vcp, "VCP Flag Read"); iov.iov_base = &vcs->vol_flag; iov.iov_len = sizeof(vcs->vol_flag); @@ -868,6 +918,14 @@ bool bt_vcp_unregister(unsigned int id) return true; } +static void vcp_attached(void *data, void *user_data) +{ + struct bt_vcp_cb *cb = data; + struct bt_vcp *vcp = user_data; + + cb->attached(vcp, cb->user_data); +} + struct bt_vcp *bt_vcp_new(struct gatt_db *ldb, struct gatt_db *rdb) { struct bt_vcp *vcp; @@ -1068,6 +1126,26 @@ static unsigned int vcp_register_notify(struct bt_vcp *vcp, return notify->id; } +bool bt_vcp_vr_set_ops(struct bt_vcp *vcp, struct bt_vcp_vr_ops *ops, + void *data) +{ + struct ev_cb *cb; + + if (!vcp) + return false; + + if (vcp->cb) + free(vcp->cb); + + cb = new0(struct ev_cb, 1); + cb->ops = ops; + cb->data = data; + + vcp->cb = cb; + + return true; +} + static void foreach_vcs_char(struct gatt_db_attribute *attr, void *user_data) { struct bt_vcp *vcp = user_data; @@ -1141,25 +1219,54 @@ static void foreach_vcs_service(struct gatt_db_attribute *attr, gatt_db_service_foreach_char(attr, foreach_vcs_char, vcp); } +static void vcp_attach_att(struct bt_vcp *vcp, struct bt_att *att) +{ + if (vcp->disconn_id) { + if (att == bt_vcp_get_att(vcp)) + return; + bt_att_unregister_disconnect(vcp->att, vcp->disconn_id); + } + + vcp->disconn_id = bt_att_register_disconnect(vcp->att, + vcp_disconnected, + vcp, NULL); +} + bool bt_vcp_attach(struct bt_vcp *vcp, struct bt_gatt_client *client) { bt_uuid_t uuid; + if (queue_find(sessions, NULL, vcp)) { + /* If instance already been set but there is no client proceed + * to clone it otherwise considered it already attached. + */ + if (client && !vcp->client) + goto clone; + return true; + } + if (!sessions) sessions = queue_new(); queue_push_tail(sessions, vcp); - if (!client) + queue_foreach(vcp_cbs, vcp_attached, vcp); + + if (!client) { + vcp_attach_att(vcp, vcp->att); return true; + } if (vcp->client) return false; +clone: vcp->client = bt_gatt_client_clone(client); if (!vcp->client) return false; + vcp_attach_att(vcp, bt_gatt_client_get_att(client)); + bt_uuid16_create(&uuid, VCS_UUID); gatt_db_foreach_service(vcp->ldb->db, &uuid, foreach_vcs_service, vcp); diff --git a/src/shared/vcp.h b/src/shared/vcp.h index 26db5732d19b..7d70aefe0089 100644 --- a/src/shared/vcp.h +++ b/src/shared/vcp.h @@ -33,6 +33,13 @@ struct bt_vcp; +struct bt_vcp_vr_ops { + void (*set_volume)(struct bt_vcp *vcp, int8_t volume, void *data); +}; + +bool bt_vcp_vr_set_ops(struct bt_vcp *vcp, struct bt_vcp_vr_ops *ops, + void *data); + typedef void (*bt_vcp_destroy_func_t)(void *user_data); typedef void (*bt_vcp_debug_func_t)(const char *str, void *user_data); typedef void (*bt_vcp_func_t)(struct bt_vcp *vcp, void *user_data);