SDK / exoplayer

This brings in another fix for `NullPointerExceptions` within `WebView` callbacks in the IMA SDK, related to companion ads.

Issue: #8447

#minor-release

PiperOrigin-RevId: 367591047

- Take centerControls padding into account to prevent switching to
  minimal mode too soon
- Disable clipping to padding to avoid the edges of controls from
  being clipped as the view gets smaller

Issue: #8763
PiperOrigin-RevId: 366966298

Issue: #8783
#minor-release
PiperOrigin-RevId: 366265419

I've removed the "by default" statements, since this now depends on how
the builder was configured.

PiperOrigin-RevId: 366249995

This ensures BUFFER_FLAG_DECODE_ONLY is set on samples that are
before the playback start position, in the case that the queue
is created after the start position is set.

#minor-release

PiperOrigin-RevId: 366249188

When playing TrueHD streams, it's possible that the first decoded
buffer is empty, and that the channel count and sample rate are
still unknown. To correct for this, defer determining the format
until a buffer that will actually be output from the decoder has
been obtained, and only then query the channel count and sample
rate.

Issue: #8616
#minor-release
PiperOrigin-RevId: 366246245

Issue: #8710
PiperOrigin-RevId: 366051836

Currently they are only released when the timeline becomes non-empty
again or the player is released.

Issue: #8778
PiperOrigin-RevId: 366041625

The buildscript entry is required by
com.android.tools.build:gradle:4.0.1.

For other projects, it appears that org.checkerframework is
in jcenter.

Without this change building with gradlew is broken, at least.

#minor-release

PiperOrigin-RevId: 366222799

Add an allowlist of Metadata.Entry implementations with stable toString
overrides.

PiperOrigin-RevId: 366037505

Issue: #5246

PiperOrigin-RevId: 366041182

PiperOrigin-RevId: 365998615

The exo_controls_background view is supposed to fill its parent,
and so previously used match_parent to do this. However, if the
parent uses wrap_content for its own dimensions, the constraints
being specified become somewhat ambiguous. The parent is supposed
to be sizing itself to wrap its children, and one of the children
is supposed to be sizing itself to match the parent.

Intuitively for this case, you'd hope that the layout logic would
size the parent to wrap its other children, and that the
match_parent child would then fill the parent with its determined
size. That's not what happens, and instead the parent ends up
expanding to occupy all of the space available to it.

This commit sets the exo_controls_background view's dimensions
to be 0dp in the layout, to stop it from influencing the size of
the parent. It's then expanded to fill the parent in code.

Issue: #8726
#minor-release
PiperOrigin-RevId: 364868301

PiperOrigin-RevId: 360404403

Issue: #8705
PiperOrigin-RevId: 364821429

PiperOrigin-RevId: 364779790

Before this change, calling read after reaching the end of input in an Ogg file
would cause an IllegalStateException.

PiperOrigin-RevId: 364758873

#minor-release

PiperOrigin-RevId: 364561115

PiperOrigin-RevId: 364363882

#minor-release

PiperOrigin-RevId: 363915106

Issue: #8718
PiperOrigin-RevId: 363869093

#minor-release

PiperOrigin-RevId: 363859522

This change fixes playback of playlists where segments have the
extension and Content-Type of JPEG pictures (although in reality)
they are transport streams. File inferrence before this change will
cause an exception when assuming the inferred file type is one of
the allowed HLS containers.

#minor-release
Issue: #8733
PiperOrigin-RevId: 363641277

This brings in a fix for `NullPointerExceptions` within `WebView` callbacks in
the IMA SDK.

Issue: #8447
PiperOrigin-RevId: 363627446

#minor-release

PiperOrigin-RevId: 363141851

This makes HLS playback less liable to become stuck if discontinuity
tags are inserted at different times across media playlists.

Issue: #8700
Issue: #8372
PiperOrigin-RevId: 362903428

According to the spec (section 8.4.2), high numeric values represent low
priorities, so we need to flip this sort.

Issue: #8704
#minor-release
PiperOrigin-RevId: 362558370

`ImaAdsLoader` clears its `AdPlaybackState` when it's released but this could
cause `AdsMediaSource` to look up information in the ad playback state that is
no longer in bounds.

Issue: #8693

PiperOrigin-RevId: 362556286

PiperOrigin-RevId: 362079362

If none of the extractors successfully sniff the content then we will fall back
to inferred file types in the following order:
- Webvtt if the media comes from a SUBTITLE EXT-X-MEDIA.
- The type of media declared in the HTTP "Content-Type" header.
- The type of the media according to the file extension.
- Transport stream.

Issue: #8700
PiperOrigin-RevId: 362519769

PiperOrigin-RevId: 362298115

In a period transition we pass the start time of the next period, for
the final period we pass the duration of the period or timeline, if
known.

This means sideloaded subtitles now respect the end point of
ClippingMediaSource and ensures that content subtitles aren't
incorrectly displayed over mid-roll ads.

When transitioning back into the subtitled content the subtitles still
appear slightly before the video transitions, meaning the first subtitle
of the content is shown with the last few frames of the ad. Resolving
this in a way that doesn't break anything else requires a deeper
investigation.

Issue: #5317
Issue: #8456
#minor-release
PiperOrigin-RevId: 361797118

PiperOrigin-RevId: 361767801

MaskingMediaSource needs to resolve the prepare position set for a MaskingPeriod
while the source was still unprepared to the first actual prepare position.

It currently assumes that the period-window offset and the default position is
zero. This assumption is correct when a PlaceholderTimeline is used, but it
may not be true if the real timeline is already known (e.g. when re-preparing
a live stream after a playback error).

Fix this by using the known timeline at the time of the preparation.
Also:
 - Update a test that should have caught this to use lazy re-preparation.
 - Change the demo app code to use the recommended way to restart playback
   after a BehindLiveWindowException.

Issue: #8675
PiperOrigin-RevId: 361604191

PiperOrigin-RevId: 361106701

- Avoid having two onPositionDiscontinuity events (seek and transition)
  sent after a seek to another media item.
- Avoid triggering an onPositionDiscontinuity event after a timeline
  change.

#minor-release

PiperOrigin-RevId: 361092914

PiperOrigin-RevId: 361029604

Issue: #8664
#minor-release
PiperOrigin-RevId: 360877086

PiperOrigin-RevId: 360433358

PiperOrigin-RevId: 360398175