tree a5da137c74e88a30e910f11ff321ec4c82cd5e2e
parent e2f6b6df0af3ac953418acf45ca2f310cf3b7089
author Yu-Hsuan Hsu <yuhsuan@chromium.org> 1574849385 +0800
committer Commit Bot <commit-bot@chromium.org> 1587852343 +0000

alsa_conformance_test: Check if the samples recorded are valid

Without any help from users, we can verify the correctness of recorded
samples by checking whether all of them are zeros. The tool shows
whether each channel is a zero channel, which means all samples in
this channel are zeros. Usually the recorded samples should not be all
zeros.

BUG=b:145266437
TEST=Run alsa_conformance_test on grunt.

Change-Id: I32c08a5832b46800bff32d30f82de0afa3eea1c5
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/audiotest/+/1939174
Reviewed-by: Cheng-Yi Chiang <cychiang@chromium.org>
Tested-by: Yu-Hsuan Hsu <yuhsuan@chromium.org>
Commit-Queue: Yu-Hsuan Hsu <yuhsuan@chromium.org>