Don't clip FFT output values to minDecibels.

Don't clip FFT output values to minDecibels.

If the (linear) FFT value is zero, the dB value was set to
analyser.minDecibels.  The spec doesn't require this and it makes more
sense to return the expected -Infinity instead.

BUG=588853
TEST=realtimeanalyser-zero.html

Committed: https://crrev.com/ef6f6ae5e4c96622286b563658d5cd62a6cf1197
Cr-Commit-Position: refs/heads/master@{#378081}

[Raymond Toy, 2016-02-24 19:28:33]

rtoy@chromium.org changed reviewers:
+ hongchan@chromium.org

[Raymond Toy, 2016-02-24 19:28:34]

PTAL

[Raymond Toy, 2016-02-25 22:33:54]

The CQ bit was checked by rtoy@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2016-02-25 22:44:47]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1729783002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1729783002/1

[commit-bot: I haz the power, 2016-02-25 23:28:45]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2016-02-25 23:28:46]

Dry run: Try jobs failed on following builders:
  android_chromium_gn_compile_rel on tryserver.chromium.android (JOB_FAILED,
https://build.chromium.org/p/tryserver.chromium.android/builders/android_chro...)

[hongchan, 2016-02-26 22:33:59]

lgtm

[Raymond Toy, 2016-02-26 22:38:45]

The CQ bit was checked by rtoy@chromium.org

[commit-bot: I haz the power, 2016-02-26 22:40:01]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1729783002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1729783002/1

[commit-bot: I haz the power, 2016-02-27 02:11:25]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-02-27 02:13:02]

Description was changed from

==========
Don't clip FFT output values to minDecibels.

If the (linear) FFT value is zero, the dB value was set to
analyser.minDecibels.  The spec doesn't require this and it makes more
sense to return the expected -Infinity instead.

BUG=588853
TEST=realtimeanalyser-zero.html
==========

to

==========
Don't clip FFT output values to minDecibels.

If the (linear) FFT value is zero, the dB value was set to
analyser.minDecibels.  The spec doesn't require this and it makes more
sense to return the expected -Infinity instead.

BUG=588853
TEST=realtimeanalyser-zero.html

Committed: https://crrev.com/ef6f6ae5e4c96622286b563658d5cd62a6cf1197
Cr-Commit-Position: refs/heads/master@{#378081}
==========

[commit-bot: I haz the power, 2016-02-27 02:13:02]

Patchset 1 (id:??) landed as
https://crrev.com/ef6f6ae5e4c96622286b563658d5cd62a6cf1197
Cr-Commit-Position: refs/heads/master@{#378081}