Replace WebAudio MediaCodec usage with FFmpeg. A ~4x improvement.

Replace WebAudio MediaCodec usage with FFmpeg. A ~4x improvement.

Now that ffmpeg is linked in for project spitzer (issue 507834) we
can use it for audio decoding on Android; this provides a more
secure (all decoding in the renderer) and faster decoding experience
for WebAudio users.

Using the demo page from the linked bug, the improvements are:
apk size: -2162 bytes
aac decode: 12.9 seconds -> 3.7 seconds (~3.5x speedup)
ogg decode: 15.7 seconds -> 3.8 seconds (~4.1x speedup)

BUG=424174, 570711, 570788
TEST=existing layout tests all pass.

Committed: https://crrev.com/c0baf4af90ffad9436aa0c432d70365e28559219
Cr-Commit-Position: refs/heads/master@{#367881}

[DaleCurtis, 2016-01-06 01:11:04]

dalecurtis@chromium.org changed reviewers:
+ nasko@chromium.org, rtoy@chromium.org

[DaleCurtis, 2016-01-06 01:12:53]

Will likely need to update the webaudio codec expectations, rtoy@ how do you do
that on Android?  I can't run them on my Marshmallow device :/

[DaleCurtis, 2016-01-06 01:28:46]

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

[commit-bot: I haz the power, 2016-01-06 01:30:03]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1565623002/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1565623002/20001

[commit-bot: I haz the power, 2016-01-06 03:00:48]

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

[commit-bot: I haz the power, 2016-01-06 03:00:49]

Dry run: This issue passed the CQ dry run.

[Raymond Toy, 2016-01-06 16:45:44]

On 2016/01/06 01:12:53, DaleCurtis wrote:
> Will likely need to update the webaudio codec expectations, rtoy@ how do you
do
> that on Android?  I can't run them on my Marshmallow device :/

Don't worry about the codec stuff; no webaudio layout tests are run on the cq or
trybots. I can take care of the expectations after this lands.

But for the record, the last time I ran them I used something like:

webkit/tools/layout_tests/run_webkit_tests.py --android --release --no-retry
--details --skipped=ignore webaudio

[Raymond Toy, 2016-01-06 16:49:02]

lgtm

Thanks so much for doing this!

[nasko, 2016-01-06 17:26:54]

Awesome! I love (+0 lines, -1302 lines) type CLs :). LGTM

[DaleCurtis, 2016-01-06 19:40:46]

The CQ bit was checked by dalecurtis@chromium.org

[commit-bot: I haz the power, 2016-01-06 19:41:04]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1565623002/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1565623002/20001

[commit-bot: I haz the power, 2016-01-06 19:48:11]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2016-01-06 19:49:17]

Description was changed from

==========
Replace WebAudio MediaCodec usage with FFmpeg. A ~4x improvement.

Now that ffmpeg is linked in for project spitzer (issue 507834) we
can use it for audio decoding on Android; this provides a more
secure (all decoding in the renderer) and faster decoding experience
for WebAudio users.

Using the demo page from the linked bug, the improvements are:
apk size: -2162 bytes
aac decode: 12.9 seconds -> 3.7 seconds (~3.5x speedup)
ogg decode: 15.7 seconds -> 3.8 seconds (~4.1x speedup)

BUG=424174, 570711, 570788
TEST=existing layout tests all pass.
==========

to

==========
Replace WebAudio MediaCodec usage with FFmpeg. A ~4x improvement.

Now that ffmpeg is linked in for project spitzer (issue 507834) we
can use it for audio decoding on Android; this provides a more
secure (all decoding in the renderer) and faster decoding experience
for WebAudio users.

Using the demo page from the linked bug, the improvements are:
apk size: -2162 bytes
aac decode: 12.9 seconds -> 3.7 seconds (~3.5x speedup)
ogg decode: 15.7 seconds -> 3.8 seconds (~4.1x speedup)

BUG=424174, 570711, 570788
TEST=existing layout tests all pass.

Committed: https://crrev.com/c0baf4af90ffad9436aa0c432d70365e28559219
Cr-Commit-Position: refs/heads/master@{#367881}
==========

[commit-bot: I haz the power, 2016-01-06 19:49:18]

Patchset 2 (id:??) landed as
https://crrev.com/c0baf4af90ffad9436aa0c432d70365e28559219
Cr-Commit-Position: refs/heads/master@{#367881}