At Fri, 31 May 2002 19:36:54 +0100, Martijn Sipkema wrote: > > > it seems that USB audio supports 24 bit sample in 3 bytes format. > > and additionally i've found there are 20bit and 18bit sample formats. > > the world is large... > > > > an arising problem is that the number of formats is limited to 32. > > already 26 format types are used. the rest are only 6, and not enough > > if we put BE/LE and signed/unsigned for new formats, too. > > > > how can we solve this? extend to 64bit? no, it has too overhead. > > add a new field for special formats? > > > > perhaps we don't need all of them for such special formats. > > there are no unsigned types for such formats. > > but anyway the left resource is too small. > > are formats currently a bit in a 'supported formats' flag?
yes. the problem is that the bitmask is defined as unsigned int, und limitied to 31 bits. if it's only in alsa driver, then it wouldn't be serious. but apparently alsa-lib defines also mask as an integer. theoretically, redefining this type won't cause any compatibility problems, though, as long as you link alsa-lib dynamically. (it's an obvious advantage of "complicated" alsa api :) Takashi _______________________________________________________________ Don't miss the 2002 Sprint PCS Application Developer's Conference August 25-28 in Las Vegas -- http://devcon.sprintpcs.com/adp/index.cfm _______________________________________________ Alsa-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/alsa-devel
