SDK / exoplayer

- MediaSourceTestRunner aims to encapsulate some of the logic
  currently used in DynamicConcatenatingMediaSourceTest, so it
  can be re-used for testing other MediaSource implementations.
- The change also fixes DynamicConcatenatingMediaSourceTest to
  execute calls on the correct threads, and to release handler
  threads at the end of each test.

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=176117535

This test seems to obtain a timeline from a prepared
FakeMediaSource, but that's identical to the timeline
passed into that source to start with :).

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=176117133

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=176102179

This is helpful for tests which don't care about detailled timeline set-ups
besides the number of windows.

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=176097369

Add Builder pattern to ExtractorMediaSource and mark existing constructors as
deprecated.

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=176088810

This change makes sure progress is being made before reporting
a discontinuity. Else in cases like having no network and
playing a live stream, we allow the discontinuity to be read
each time an internal retry occurs, meaning it gets read
repeatedly. This does no harm, but is noisy and unnecessary.

We should also not allow skipping whilst there is a pending
reset or discontinuity notification, just like we don't allow
reads.

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=175953064

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=175940553

Also switch from using MIME types to C.ENCODING_* encodings in DefaultAudioSink.

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=175936872

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=175852052

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=175837754

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=175833398

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=175805139

Add Builder pattern to HlsMediaSource and mark existing constructors as
deprecated.

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=175803853

The purpose of this change isn't to fix anything. It's just to
simplify things a little bit. There will be following CLs that
make some changes to get things onto correct threads.

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=175800354

This allows to remove the LazyMediaSource used within
DynamicConcatenatingMediaSourceTest and also allows to write test which
simulates dynamic timeline or manifest updates.

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=175680371

Now we have a ChunkSampleStream.discardBuffer, we need to call
it from SsMediaPeriod as well as for the DASH case.

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=175675427

Also replaced the duplicated EMPTY track group array with the one already defined
in TrackGroupArray.

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=175670266

We deliberately compare the track group returned by the track selection
with the track group in the parameter to check if the track selection is
referring to this particular track group.

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=175660909

Add Builder pattern to SsMediaSource and mark existing constructors as
deprecated.

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=175659618

Also added tests which verify the intended behaviour.

GitHub:#3452

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=175656478

Also add encrypted HLS internal sample streams.

Issue:#1661

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=175577648

This is a step toward retaining a back-buffer in a way that
works for all MediaSource implementations. It's not possible
to adjust the discardBuffer calls in ExoPlayerImplInternal
to discard up to (position - backBufferDurationUs). Next steps
are to:

1. Find an appropriate place to specify the back buffer value,
   to be passed to the discardBuffer calls. I guess the
   LoadControl is the appropriate place to define such values.
2. Enhance discardBuffer to support a toKeyframe argument to
   pass through to discardTo.

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=175565363

Add onEnable() and onDisable() call-backs to TrackSelection. This allows
TrackSelection to perform interesting operations (like subscribe to
NetworkStatus) and clean up after itself.

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=175558485

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=175554723

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=175546817

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=175543465

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=175542973

Add an easy way to set the shutter view background color

Skip using MediaCodec.setOutputSurface on Bravia

Start with DASH MediaSource. The number of injected arguments is getting
out-of-control.

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=175529031

Someone must have forgotten to do this when rewriting this class.

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=175296249

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=175180089

This will be needed when retaining a back-buffer. Being able to
query the first index allows us to work out when we've discarded
all samples that were obtained from a particular chunk, which
we'll use to determine when to remove chunks from
ChunkSampleStream.mediaChunks.

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=175172085

In the case converting cache files from an earlier version of
SimpleCache, there is no previous version of the index file. If the app
doesn't call any SimpleCache methods which would make the index file
stored before it exists whole data gets lost.

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=175153650

These callbacks are executed on the app thread after the corresponding
timeline update was triggered. This ensures that seek operations see the
updated timelines and are therefore valid, even if the seek is performed into a
window which didn't exist before.

GitHub:#3407

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=175136187

When the renderer media clock source read its stream to end but is not ready,
this means one of two things. Either the next period is not prepared yet and
we need to stop the renderers and buffer until it's prepared, or we are
waiting for another track in the current period with a uneven (longer)
duration.

The second case was already covered by this if condition and uses the standalone
clock instead to continue.

The first case now also uses the standalone clock, but it doesn't make a
difference, because both clocks are stopped and still synchronized.

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=175134975

MPD file may include multiple EventStreams in its Periods, which contains Events
that the application may need to handle/respond to.
This change adds support for parsing the EventStream/Event nodes from MPD
file, and exposing these EventStreams as a metadata sample stream that application
can respond in a similar way to other metadata events.

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=175017697

Issue: #3441

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=175011804

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=175010595