SDK / exoplayer

- Removed DownloadInternal and its sometimes-out-of-sync
  duplicate state
- Fixed downloads being in STOPPED rather than QUEUED state
  when the manager is paused
- Fixed setMaxParallelDownloads to start/stop downloads if
  necessary when the value changes
- Fixed isWaitingForRequirements

PiperOrigin-RevId: 246164845

PiperOrigin-RevId: 246132620

They behave identically, and the old names are being removed.

Open-source note: The new methods are available in Truth as of version 0.44.

END_PUBLIC

More information:
  go/issameas-lsc

Tested:
    TAP --sample ran all affected tests and none failed
    http://test/OCL:246024032:BASE:246042619:1556672975894:513e7746
PiperOrigin-RevId: 246101315

PiperOrigin-RevId: 245956915

PiperOrigin-RevId: 245925254

Can happen if the load position falls behind in every playlist and
when we try to load the next segment, the adaptive selection logic
decides to change variant.

Issue:#5816
PiperOrigin-RevId: 245923006

- Do requirements TODO
- Add useful helper method to retrieve not met requirements
- Fix WritableDownloadIndex Javadoc

PiperOrigin-RevId: 245922903

This resolves some naming confusion that previously existed
as a result of DownloadThread also being used for removals.
Some related variables (e.g. activeDownloadCount) would refer
to both download and removal tasks, whilst others
(e.g. maxParallelDownloads) would refer only to downloads.
This change renames those that refer to both to use "task"
terminology.

This change also includes minor test edits.

PiperOrigin-RevId: 245913671

Issue: #5810
PiperOrigin-RevId: 245745646

This allows to use the session management capabilities for other analytics
purposes.

PiperOrigin-RevId: 245710588

PiperOrigin-RevId: 245448908

[Problem]
There are 3 services / modes transported on line 21:
- Captioning
- TEXT (generally not program related)
- XDS (eXtended Data Services)

Bytes belonging to the unsupported modes are interleaved with the
bytes of the captioning mode.
See Chapter 7, Chapter 8.5 and Chapter 8.6 of the CEA608 Standard for
more details.

[Solution]
Drop all bytes belonging to unsupported modes.

[Test]
- All streams containing only captioning services should not be influenced
- Test all 4 CEA 608 channels with live over-the-air content and
using all available TEXT and XDS streams.

PiperOrigin-RevId: 245443109

Issue: #5788
PiperOrigin-RevId: 245440858

PiperOrigin-RevId: 245411528

There are no logic changes here. It's just moving code around and removing
the "internal" part of names where no longer required.

PiperOrigin-RevId: 245407238

PiperOrigin-RevId: 245405316

PiperOrigin-RevId: 245401274

PiperOrigin-RevId: 245397736

PiperOrigin-RevId: 245388082

PiperOrigin-RevId: 245243488

We currently toggle the view in onTouchEvent ACTION_DOWN which is non-standard
and causes problems when used in a ViewGroup intercepting touch events.

Switch to standard Android click handling instead which is also what most
other player apps are doing.

Issue:#5784
PiperOrigin-RevId: 245219728

PiperOrigin-RevId: 245218900

This also removes the build warning about the experimental flag.

PiperOrigin-RevId: 245218251

Also add some unit tests for codecs strings parsing.

PiperOrigin-RevId: 245210490

PiperOrigin-RevId: 245014381

The two behave identically, and containsAllOf is being removed.

More information:
  go/containsall-lsc

Tested:
    TAP --sample for global presubmit queue
    http://test/OCL:244737393:BASE:244782138:1555991083653:3080d7c7
PiperOrigin-RevId: 244886736

The two behave identically, and isNotSameAs is being removed.

More information:
  go/issameas-lsc

Tested:
    TAP --sample for global presubmit queue
    http://test/OCL:244736857:BASE:244751659:1555988098671:1e0f72c5
PiperOrigin-RevId: 244886651

PiperOrigin-RevId: 244864742

Disabling stack trackes currently logs messages twice, once with and once
without stack trace.

PiperOrigin-RevId: 244853127

The AndroidX bundled version (0.42) lags behind the most up-to-date public
release (0.44) making it more difficult to stay close to the actual head
revision which is used internally.

PiperOrigin-RevId: 244848568

PiperOrigin-RevId: 244838165

This ensures we keep the loading period in sync with the the playing period in
PlybackInfo, when the latter changes to something new.

PiperOrigin-RevId: 244838123

Also re-enable two of them, although note that the fix here is
not related to the flakiness that caused them to be disabled.
I'm re-enabling them since much has changed in DownloadManager,
and the hope is that these tests are no longer flaky.

PiperOrigin-RevId: 244826225

Experiments show this is beneficial for rebuffers with only minor impact
on battery usage.

Configurations which explicitly set a minimum buffer duration are unaffected.

Issue:#2083
PiperOrigin-RevId: 244823642

PiperOrigin-RevId: 244816212

Before this change we'd release the audio track and create a new one as soon
as audio processors had drained when reconfiguring.

Fix this behavior by stop()ing the AudioTrack to play out all written data.

Issue: #2446
PiperOrigin-RevId: 244812402

- We had buildAddRequest and sendNewDownload. Converged to
  buildAddDownload and sendAddDownload.
- Also fixed a few more inconsistencies, and brought the
  action constants into line as well.

PiperOrigin-RevId: 244274041

PiperOrigin-RevId: 244268855