bluetooth_audio: add a Wav class to write frames efficiently

This patch provides a helper class to write frames to a wave
file efficiently.

BUG=b:161953821
TEST=None

Change-Id: I464f3ee69bcec84191f01e1c2534317c02cfdefd
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/chameleon/+/2373974
Reviewed-by: Yu Liu <yudiliu@google.com>
Reviewed-by: Michael Sun <michaelfsun@google.com>
Commit-Queue: Shyh-In Hwang <josephsih@chromium.org>
Tested-by: Shyh-In Hwang <josephsih@chromium.org>
1 file changed