From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Message-ID: <2d5a2c100805171502r2466b16fuf4fcd4d177a27b25@mail.gmail.com> Date: Sat, 17 May 2008 19:02:58 -0300 From: "Luiz Augusto von Dentz" To: "BlueZ development" In-Reply-To: <56A45346-8EDB-4B30-85DE-3D371C0EC702@holtmann.org> MIME-Version: 1.0 References: <200805162025.43120.baisheng.wang.cn@gmail.com> <094BCE01AFBE9646AF220B0B3F367AAB03106546@pdsmsx413.ccr.corp.intel.com> <56A45346-8EDB-4B30-85DE-3D371C0EC702@holtmann.org> Subject: Re: [Bluez-devel] sound quality is very slow when using helix player. Reply-To: BlueZ development List-Id: BlueZ development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="iso-8859-1" Sender: bluez-devel-bounces@lists.sourceforge.net Errors-To: bluez-devel-bounces@lists.sourceforge.net >>>From 3.19 to 3.31 there are a lot of changes, so we better focus on 2 things, sbc codec and plugin code. As helix happen to not have a native plugin so I suppose you are using alsa plugin. What really changed from 3.19 to 3.31 is that the configuration logic moved from audio service to plugin, so the user application (helix player) is now able to select the stream frequency and how many channels it has. This could be a problem if helix is not selecting the same rate as the stream and might cause audio degradation, it is also possible that helix is resampling which not only may cause degradation but also consumes more cpu. ps: you can play with sbc parameters directly on ~/.asoundrc, so perhaps you can find a configuration that do not degraded. -- = Luiz Augusto von Dentz Engenheiro de Computa=E7=E3o ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft = Defy all challenges. Microsoft(R) Visual Studio 2008. = http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ Bluez-devel mailing list Bluez-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bluez-devel