From mboxrd@z Thu Jan 1 00:00:00 1970 From: Raymond Yau Subject: Re: [PATCH v8 00/12] Media controller (core and V4L2) Date: Fri, 28 Jan 2011 10:38:09 +0800 Message-ID: References: <1296131437-29954-1-git-send-email-laurent.pinchart@ideasonboard.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mail-ew0-f51.google.com (mail-ew0-f51.google.com [209.85.215.51]) by alsa0.perex.cz (Postfix) with ESMTP id 9DF581037F9 for ; Fri, 28 Jan 2011 03:38:11 +0100 (CET) Received: by ewy19 with SMTP id 19so1263376ewy.38 for ; Thu, 27 Jan 2011 18:38:11 -0800 (PST) In-Reply-To: <1296131437-29954-1-git-send-email-laurent.pinchart@ideasonboard.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: alsa-devel-bounces@alsa-project.org Errors-To: alsa-devel-bounces@alsa-project.org To: Laurent Pinchart , ALSA Development Mailing List List-Id: alsa-devel@alsa-project.org 2011/1/27 Laurent Pinchart > Hi everybody, > > Here is the eighth version of the media controller core and V4L2 patches. > > Quick reminder for those who missed the previous version. let me quote the > documentation (Documentation/DocBook/v4l/media-controller.xml). > > "Discovering a [media] device internal topology, and configuring it at > runtime, > is one of the goals of the media controller API. To achieve this, hardware > devices are modelled as an oriented graph of building blocks called > entities > connected through pads." > > > I want to emphasize once again that the media controller API does not > replace > the V4L, DVB or ALSA APIs. It complements them. > > How does media controller API allow the media application to know there are multi streaming playback devices ? http://www.intel.com/support/motherboards/desktop/sb/cs-020642.htm#multistream via codec can reconfigure the independent headphone at runtime but some codec require a reboot to select this multi steaming playback model how does media controller api allow the application/pulseaudio server to know whether surround5.1 and rear mic/line in for those 3 jacks motherboard cannot be used at the same time ? http://www.intel.com/support/motherboards/desktop/sb/cs-020642.htm#6ch via codec using "smart51" switch and other codec use "channel mode" to switch between 2 channels and 6 channels 5 jacks model may have "channel mode" to switch between 6 channels and 8 channels some high-end notebook may switch from 2 channels to 8 channels when they have four jacks (pink, blue , green and grey )