From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-14.8 required=3.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, UNWANTED_LANGUAGE_BODY,USER_AGENT_GIT,USER_IN_DEF_DKIM_WL autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id BEC42C433E0 for ; Wed, 22 Jul 2020 03:09:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9130D207D0 for ; Wed, 22 Jul 2020 03:09:17 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="HPAWocSX" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731856AbgGVDJR (ORCPT ); Tue, 21 Jul 2020 23:09:17 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59420 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731781AbgGVDJQ (ORCPT ); Tue, 21 Jul 2020 23:09:16 -0400 Received: from mail-qv1-xf4a.google.com (mail-qv1-xf4a.google.com [IPv6:2607:f8b0:4864:20::f4a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 81D5EC061794 for ; Tue, 21 Jul 2020 20:09:16 -0700 (PDT) Received: by mail-qv1-xf4a.google.com with SMTP id v10so603866qvm.17 for ; Tue, 21 Jul 2020 20:09:16 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=date:message-id:mime-version:subject:from:to:cc; bh=iY8AyA2O6tzg8oy/MrYk3RwynF4LaPQeshdQFRLW5VY=; b=HPAWocSXoFAWJVXBU3KyGDGMCXPGR4lH+ZD2T9R3lKM4wRXZz6Avow5yx/nKROwmAQ FoX81vx5w9Kb65IN7yTi5UxP5GIiXAjrCnG1flwR5F1iLzq+gtbo29jozXDSVbdOBMJa UzpeaBTUQTzrBHO8HPG4Y5V8UYNBXqt0w1YOfHyeAc6RIV228xi6Oo0mCm3CxnJ2Y7RL zBGS6TjuizeQ1Rq8emKEi8+4dLzqc+PGIt2V7q6YSH2H3o5u5keQSgEMpKiPPjzPe0uQ wjoYA67ey9TGCe3pbNM9GvWohsahqtPTvopD4uk9e6h3B1W6tyfBa3oYse9+Ln7yLneF iZeA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:message-id:mime-version:subject:from:to:cc; bh=iY8AyA2O6tzg8oy/MrYk3RwynF4LaPQeshdQFRLW5VY=; b=ph5hrYPAo3aiJbKdcp9bbfJ7JbZEON/Fx2s4+ZpxHrHTSC13WXcAED/NlOsFb5nz9p wd6TsoPt5qfVDo2cD3kOwT1cR9oEGcFJRrpZaCjbjzg8CTr4xkdknDlZycymLz+iZBu9 qaF39Ir3gR7EJE5tyxgPxyp+1JWxS2eDiQyZ4gNZtKA+KH+aSNSbFig4nimcTeM9m1RM GAlnKcIte+dQxLw1zlL/TwsZAF2k2+pX5Y2HScD8m9bKuh0+5R12MKMsA5ol3QdkvUip NN5PkIPkMn/djY3Rg7WMzxp4OfUNriFSY6+BHr08X3++iCXNFKi9WSyrbHpCfJFg2+fQ 2glA== X-Gm-Message-State: AOAM530lo2aGZ4A6xndYPh5/9x8QzvPYDCc+G2beQIDTr/ILipoo5PzX KNyp83bJ6wct8mkj2HSaNahidKV4KXUhMEVPkHhYTwbgAPENxRqtVuZHmE6Hjs02SsZYDXAclz8 14W8aHqj05z9VH3kszP93quhCoSvchM7U5jQYJ3lT5h1JzvqdzqBDRKqGM8zg1bukEQ6H2vSGkl ST X-Google-Smtp-Source: ABdhPJw1mI7mc9uIHQXWJrxQZ40BL7WX/2tCvmQXRRIWy2X3Oq0QjEmnBh1MBTMSoHiCZhfO6XN0tcLUzsiz X-Received: by 2002:a05:6214:925:: with SMTP id dk5mr30152105qvb.183.1595387355376; Tue, 21 Jul 2020 20:09:15 -0700 (PDT) Date: Wed, 22 Jul 2020 11:09:01 +0800 Message-Id: <20200722110826.Bluez.v2.1.I667fa0ebcc3056a21c22fdaf476a56dd72aff38d@changeid> Mime-Version: 1.0 X-Mailer: git-send-email 2.28.0.rc0.105.gf9edc3c819-goog Subject: [Bluez PATCH v2 1/2] audio/transport: change volume to 8bit From: Archie Pusaka To: linux-bluetooth , Luiz Augusto von Dentz Cc: Archie Pusaka , Michael Sun Content-Type: text/plain; charset="UTF-8" Sender: linux-bluetooth-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-bluetooth@vger.kernel.org From: Archie Pusaka The valid range of volume is 0 - 127, yet it is stored in 16bit data type. This patch modifies it so we use 8bit data type to store volume instead. Furthermore, this patch introduces helper function and defined values to check for volume validity, to prevent numbers scattered all over. Reviewed-by: Michael Sun --- Changes in v2: None profiles/audio/avrcp.c | 2 +- profiles/audio/avrcp.h | 1 - profiles/audio/transport.c | 46 ++++++++++++++++++++++---------------- profiles/audio/transport.h | 3 ++- 4 files changed, 30 insertions(+), 22 deletions(-) diff --git a/profiles/audio/avrcp.c b/profiles/audio/avrcp.c index 1bf85041e..b312b70b9 100644 --- a/profiles/audio/avrcp.c +++ b/profiles/audio/avrcp.c @@ -1660,7 +1660,7 @@ static uint8_t avrcp_handle_register_notification(struct avrcp *session, break; case AVRCP_EVENT_VOLUME_CHANGED: pdu->params[1] = media_transport_get_device_volume(dev); - if (pdu->params[1] > 127) + if (!media_transport_volume_valid(pdu->params[1])) goto err; len = 2; diff --git a/profiles/audio/avrcp.h b/profiles/audio/avrcp.h index 86d310c73..3fd74e18a 100644 --- a/profiles/audio/avrcp.h +++ b/profiles/audio/avrcp.h @@ -114,6 +114,5 @@ void avrcp_unregister_player(struct avrcp_player *player); void avrcp_player_event(struct avrcp_player *player, uint8_t id, const void *data); - size_t avrcp_handle_vendor_reject(uint8_t *code, uint8_t *operands); size_t avrcp_browsing_general_reject(uint8_t *operands); diff --git a/profiles/audio/transport.c b/profiles/audio/transport.c index 48fabba9b..a32073380 100644 --- a/profiles/audio/transport.c +++ b/profiles/audio/transport.c @@ -55,6 +55,8 @@ #define MEDIA_TRANSPORT_INTERFACE "org.bluez.MediaTransport1" +#define UNINITIALIZED_VOLUME_VALUE 128 + typedef enum { TRANSPORT_STATE_IDLE, /* Not acquired and suspended */ TRANSPORT_STATE_PENDING, /* Playing but not acquired */ @@ -86,7 +88,7 @@ struct media_owner { struct a2dp_transport { struct avdtp *session; uint16_t delay; - uint16_t volume; + uint8_t volume; }; struct media_transport { @@ -634,7 +636,7 @@ static gboolean volume_exists(const GDBusPropertyTable *property, void *data) struct media_transport *transport = data; struct a2dp_transport *a2dp = transport->data; - return a2dp->volume <= 127; + return media_transport_volume_valid(a2dp->volume); } static gboolean get_volume(const GDBusPropertyTable *property, @@ -654,24 +656,20 @@ static void set_volume(const GDBusPropertyTable *property, { struct media_transport *transport = data; struct a2dp_transport *a2dp = transport->data; - uint16_t volume; + uint16_t arg; + uint8_t volume; bool notify; - if (dbus_message_iter_get_arg_type(iter) != DBUS_TYPE_UINT16) { - g_dbus_pending_property_error(id, - ERROR_INTERFACE ".InvalidArguments", - "Invalid arguments in method call"); - return; - } + if (dbus_message_iter_get_arg_type(iter) != DBUS_TYPE_UINT16) + goto error; - dbus_message_iter_get_basic(iter, &volume); + dbus_message_iter_get_basic(iter, &arg); + if (arg > UINT8_MAX) + goto error; - if (volume > 127) { - g_dbus_pending_property_error(id, - ERROR_INTERFACE ".InvalidArguments", - "Invalid arguments in method call"); - return; - } + volume = (uint8_t)arg; + if (!media_transport_volume_valid(volume)) + goto error; g_dbus_pending_property_success(id); @@ -688,6 +686,11 @@ static void set_volume(const GDBusPropertyTable *property, "Volume"); avrcp_set_volume(transport->device, volume, notify); + return; + +error: + g_dbus_pending_property_error(id, ERROR_INTERFACE ".InvalidArguments", + "Invalid arguments in method call"); } static gboolean endpoint_exists(const GDBusPropertyTable *property, void *data) @@ -824,7 +827,7 @@ static int media_transport_init_source(struct media_transport *transport) transport->data = a2dp; transport->destroy = destroy_a2dp; - a2dp->volume = -1; + a2dp->volume = UNINITIALIZED_VOLUME_VALUE; transport->sink_watch = sink_add_state_cb(service, sink_state_changed, transport); @@ -931,7 +934,7 @@ struct btd_device *media_transport_get_dev(struct media_transport *transport) return transport->device; } -uint16_t media_transport_get_volume(struct media_transport *transport) +uint8_t media_transport_get_volume(struct media_transport *transport) { struct a2dp_transport *a2dp = transport->data; return a2dp->volume; @@ -958,7 +961,7 @@ uint8_t media_transport_get_device_volume(struct btd_device *dev) GSList *l; if (dev == NULL) - return 128; + return UNINITIALIZED_VOLUME_VALUE; for (l = transports; l; l = l->next) { struct media_transport *transport = l->data; @@ -991,3 +994,8 @@ void media_transport_update_device_volume(struct btd_device *dev, media_transport_update_volume(transport, volume); } } + +bool media_transport_volume_valid(uint8_t volume) +{ + return volume < 128; +} diff --git a/profiles/audio/transport.h b/profiles/audio/transport.h index ac542bf6c..c430515f2 100644 --- a/profiles/audio/transport.h +++ b/profiles/audio/transport.h @@ -32,7 +32,7 @@ struct media_transport *media_transport_create(struct btd_device *device, void media_transport_destroy(struct media_transport *transport); const char *media_transport_get_path(struct media_transport *transport); struct btd_device *media_transport_get_dev(struct media_transport *transport); -uint16_t media_transport_get_volume(struct media_transport *transport); +uint8_t media_transport_get_volume(struct media_transport *transport); void media_transport_update_delay(struct media_transport *transport, uint16_t delay); void media_transport_update_volume(struct media_transport *transport, @@ -43,3 +43,4 @@ void transport_get_properties(struct media_transport *transport, uint8_t media_transport_get_device_volume(struct btd_device *dev); void media_transport_update_device_volume(struct btd_device *dev, uint8_t volume); +bool media_transport_volume_valid(uint8_t volume); -- 2.28.0.rc0.105.gf9edc3c819-goog