Clemens Ladish wrote: > > PCM streams are marked with the "valid" bit. >From what I understand, I just don't have access to that flag so my best guess is still just a guess. It's all just a matter of capturing the PCM stream and then looking through it for the repeated sequence that is defined for compressed data and then taking a different action. If I don't see that repeatable block sequence I assume it's back to PCM. By looking through IEC 64937 I understand that two consecutive "samples" 0xF872 0x4E1F define a sync word. Section 6.3.3 of part 1 of the standard says there may be up to four 0x0000 "samples" before this but it is not required if "there are sequences of data-bursts so tightly packed that there is never a sequence of all four ‘0’ subframes". Thanks for clarifying things, Clemens. I think this should serve as a pretty good reference if someone else has the same kind of question in the future. Paul Braman ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user
