From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Tue, 11 Aug 2009 15:08:55 -1000 From: Tim Newsham To: 9fans@9fans.net Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Subject: [9fans] audio standards -- too many to choose from Topicbox-Message-UUID: 42d007a8-ead5-11e9-9d60-3106f5b1d025 I'm looking over the audio device formats because I would like to make a service that is interoperable with the existing services and much to my dismay there are several different formats: - plan9 audio(3) with audio,volume,audiostat - plan9 usb(4) with audio,volume,audioctl,audioin - inferno audio(3) with audio,audioctl man page hints at a port driver that supports an older format The original audio(3) seems fairly simplistic in that it only supports one format of audio data. The inferno format for selecting audio format seems somewhat nice except that it breaks out pcm variants across several settings (encoding and bits, but probably to that should be added "endian", too). I would love to make a system that interops with the existing "standard" but I don't know which standard to choose, and it seems that at the least I will have to embrace and extend one of them... - Is there any interest in unifying the existing audio formats? - If so, is anyone interested in bouncing around ideas of what this format should look like? - What software exists for each of these formats? - Which format is the most "popular"? Tim Newsham http://www.thenewsh.com/~newsham/