On Fri, 30 Sep 2016 09:50:57 +0200, Clemens Ladisch wrote: > > David Henningsson wrote: > > 1a) can I count on alsa-lib's strings (everything from card name and > > mixer identifiers to various descriptions) to be UTF-8 or perhaps > > even 7-bit? > > Alsa-lib itself does not care about the encoding. > > The strings are whatever the kernel uses. In practice, this almost > always means ASCII, but kernel policy is UTF-8. (At the moment, the > only way I know of to get a non-ASCII string is from a USB device.) > > Alsa-lib can also return strings from configuration files. These are > encoded in whatever the editor happens to use, i.e., in practice, UTF-8. > > > 1b) In what way can buggy drivers violate the answers to 1a? > > The USB driver is not buggy. :) But in theory, you could get any random > crap. > > For testing, you can change a card's "id" attribute in sysfs. The ID string should be OK, as it's filtered in copy_valid_id_string(). But the other name strings have no checks, thus may have non-ASCII letters (in theory). Takashi _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
