The microphone arrays for Intel platforms are described in the
ACPI NHLT table. This table is available in sysfs. Parse this
information and use a more common format (json) for output. This
information is usable for the further DSP processing.

Signed-off-by: Jaroslav Kysela <perex@perex.cz>

Signed-off-by: Jaroslav Kysela <perex@perex.cz>

Signed-off-by: Jaroslav Kysela <perex@perex.cz>

Per `info uname`, `uname` always prints its data in the same order.
Also, "note that A && B || C is not if-then-else. C may run when A is true."
https://www.shellcheck.net/wiki/SC2015

set -x; read -r KERNEL_VERSION < <(uname -v); smp=x; \
  [[ "$KERNEL_VERSION" = *SMP* ]] && \
  { smp=y; readonly smp; false;} || smp=n; set -

  ... https://github.com/koalaman/shellcheck

Fixes: https://github.com/alsa-project/alsa-utils/pull/207
From: wileyhy @ github
Signed-off-by: Jaroslav Kysela <perex@perex.cz>

lines 50, 103: in two compound ['s, replace '-a' with '] && ['
  SC2166 – Prefer `[ p ] && [ q ]` as `[ p -a q ]` is not well defined.
  SC2107 – Instead of `[ a && b ]`, use `[ a ] && [ b ]`.

line 45: in a compound test command, change '-o' to '|| test'
  SC1139 – Use `||` instead of `-o` between test commands.
  SC2109 – Instead of `[ a || b ]`, use `[ a ] || [ b ]`.

 ... https://github.com/koalaman/shellcheck

Fixes: https://github.com/alsa-project/alsa-utils/pull/206
From: wileyhy @ github
Signed-off-by: Jaroslav Kysela <perex@perex.cz>

When a duration is specified but the the capture device cannot use the
requested sample rate and an alternative rate is used the duration
sample count must be (re)calculated.

Fixes: https://github.com/alsa-project/alsa-utils/pull/200
Signed-off-by: Tj <hacker@iam.tj>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>

The REG_ICASE flag is a compile-time flag (cflags), it
should be used with regcomp() instead of regexec(). Also
add the REG_EXTENDED flag in this patch to make patterns
like 'tgl|adl' work.

Fixes: https://github.com/alsa-project/alsa-utils/pull/195
Signed-off-by: Chao Song <chao.song@linux.intel.com>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>

Signed-off-by: Jaroslav Kysela <perex@perex.cz>

BugLink: https://github.com/alsa-project/alsa-utils/issues/185
Fixes: e61f35b ("alsaloop: try adapt avail_min for playback to avoid 100% CPU usage")
Signed-off-by: Jaroslav Kysela <perex@perex.cz>

Fix 'LC_ALL=C.UTF-8 ./alsabat' command.

Fixes: https://github.com/alsa-project/alsa-utils/issues/192
Signed-off-by: Jaroslav Kysela <perex@perex.cz>