Date: Mon, 12 Nov 2007 01:31:30 +0100 From: Lennart Poettering To: Takashi Iwai Subject: Status of ALSA "simple" mixer interface Message-ID: <20071112003130.GA3266@tango.0pointer.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Organization: Red Hat, Inc. X-Campaign-1: () ASCII Ribbon Campaign X-Campaign-2: / Against HTML Email & vCards - Against Microsoft Attachments User-Agent: Leviathan/19.8.0 [zh] (Cray 3; I; Solaris 4.711; Console) Hi! /usr/include/alsa/mixer.h contains this comment: /* Simple (legacy) mixer elements API */ What does the "legacy" exactly mean? Shouldn't I be using it in new code? I am currently looking for some way I can find out which PCM channel for a stream on something like "surround51:0" maps to which mixer element. How am I supposed to implement something like this without stuff like the snd_mixer_selem_channel_id_t? A second question: aplay -L suggest to use "surround71:" (and *only* that) as plugin for my usb webcam that only has a single mono channel. What's going wrong? Any idea where I should be looking? Thanks, Lennart -- Lennart Poettering Red Hat, Inc. lennart [at] poettering [dot] net ICQ# 11060553 http://0pointer.net/lennart/ GnuPG 0x1A015CC4