Lazily allocate WSOLA structures; saves 56kB to 765kB of memory.

Lazily allocate WSOLA structures; saves 56kB to 765kB of memory.

These structures aren't needed until we actually attempt a playback
rate adaptation, so don't bother allocating them until we do. This
saves a few tens to hundreds of kilobytes of memory based on the
channel layout.

Stereo 48kHz: 57592 bytes
Stereo 192kHz: 230392 bytes
7.1 48kHz: 195808 bytes
7.1 192kHz: 783328 bytes

BUG=666813
TEST=none

Committed: https://crrev.com/c9f01b2a8a5f2df7198f4c62faf9e6750451033a
Cr-Commit-Position: refs/heads/master@{#434265}

[DaleCurtis, 2016-11-23 01:21:27]

dalecurtis@chromium.org changed reviewers:
+ sandersd@chromium.org

[DaleCurtis, 2016-11-23 01:21:27]

Also includes a minor test cleanup to make perf testing easier.

[sandersd (OOO until July 31), 2016-11-23 19:04:25]

lgtm

[DaleCurtis, 2016-11-23 19:41:27]

The CQ bit was checked by dalecurtis@chromium.org

[commit-bot: I haz the power, 2016-11-23 19:41:58]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-11-23 22:06:28]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1479930087901580, "parent_rev":
"21038df4232e1601a61240358f6574c8bf7a5ae6", "commit_rev":
"ba545700d4762538c262d3f065073fdf996f35a2"}

[commit-bot: I haz the power, 2016-11-23 22:06:51]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-11-23 22:09:49]

Description was changed from

==========
Lazily allocate WSOLA structures; saves 56kB to 765kB of memory.

These structures aren't needed until we actually attempt a playback
rate adaptation, so don't bother allocating them until we do. This
saves a few tens to hundreds of kilobytes of memory based on the
channel layout.

Stereo 48kHz: 57592 bytes
Stereo 192kHz: 230392 bytes
7.1 48kHz: 195808 bytes
7.1 192kHz: 783328 bytes

BUG=666813
TEST=none
==========

to

==========
Lazily allocate WSOLA structures; saves 56kB to 765kB of memory.

These structures aren't needed until we actually attempt a playback
rate adaptation, so don't bother allocating them until we do. This
saves a few tens to hundreds of kilobytes of memory based on the
channel layout.

Stereo 48kHz: 57592 bytes
Stereo 192kHz: 230392 bytes
7.1 48kHz: 195808 bytes
7.1 192kHz: 783328 bytes

BUG=666813
TEST=none

Committed: https://crrev.com/c9f01b2a8a5f2df7198f4c62faf9e6750451033a
Cr-Commit-Position: refs/heads/master@{#434265}
==========

[commit-bot: I haz the power, 2016-11-23 22:09:50]

Patchset 1 (id:??) landed as
https://crrev.com/c9f01b2a8a5f2df7198f4c62faf9e6750451033a
Cr-Commit-Position: refs/heads/master@{#434265}