SDK / exoplayer

*** Original commit ***

Ensure MediaSourceFactory instances can be re-used

This fixes DefaultDrmSessionManager so it can be used by a new Player
instance (by nulling out its reference to the playback thread, which is
unique per-Player instance). This only works if the
DefaultDrmSessionManager is 'fully released' before being used by the
second Player instance, meaning that the reference count of the manager
and all its sessions is zero.

#exofixit
Issue: #9099

***

PiperOrigin-RevId: 396861138

Please reference RFC2326 Section A.1 for the state transitions.

PiperOrigin-RevId: 396799104

#exofixit

PiperOrigin-RevId: 396793873

* Add new README files for the Transformer demo and media/testapps/.
* Add an androidx demos README in media/github/

PiperOrigin-RevId: 396784430

#exofixit

PiperOrigin-RevId: 396780460

Follow-up to https://github.com/google/ExoPlayer/commit/9f3c2fb5e10a4e17a753e3791c9e4e07a79005d1

PiperOrigin-RevId: 396776798

#exofixit

PiperOrigin-RevId: 396658717

Previously the released preacquired sessions would start their keepalive
timeout, and so no additional resources would be freed in time for the
manager to retry the session acquisition.

This change adds an additional purge of keepalive sessions *after* the
preacquired sessions are released, which fixes the problem.

#exofixit
#minor-release

PiperOrigin-RevId: 396613352

This needs to match with the implementation for Dackka javadoc generation to succeed.

PiperOrigin-RevId: 396377019

PiperOrigin-RevId: 396363113

Align redererDisableFlags (un)bundling
with the other field by using an explicit
temporary data structure (int array).

PiperOrigin-RevId: 396358143

PiperOrigin-RevId: 396354920

Also add `TYPE_USE` target on the @IntDef (and fix @Targets for other
@IntDefs).

#exofixit

PiperOrigin-RevId: 396333212

#exo-fixit

PiperOrigin-RevId: 396329591

This is was reported in #9257 where the PlaybackStatsListener may try to
access an emtpy ArrayList.

Issue: #9257

#minor-release
#exofixit

PiperOrigin-RevId: 396329373

PiperOrigin-RevId: 396313679

#exofixit

PiperOrigin-RevId: 396304941

PiperOrigin-RevId: 396303288

PiperOrigin-RevId: 396303242

PiperOrigin-RevId: 396297834

PiperOrigin-RevId: 395936070

This is a candidate fix for #8906. As mentioned in that issue,
negative positions within windows might be (kind of) valid in
live streaming scenarios, where the window starts at some
non-zero position within the period. However, negative positions
within periods are definitely not valid. Neither are positions
that exceed the period duration.

There was already logic in ExoPlayerImplInternal to prevent a
resolved seek position from exceeding the period duration. This
fix adds the equivalent constraint for the start of the period.
It also moves the application of the constraints into Timeline.
This has the advantage that the constraints are applied as part
of state masking in ExoPlayerImpl.seekTo, removing any UI flicker
where the invalid seek position is temporarily visible.

Issue: #8906
PiperOrigin-RevId: 395917413

Issue: #9416

The dash "-" in the brackets must be escaped, or it acts like a range operator.

#minor-release

PiperOrigin-RevId: 395909845

PiperOrigin-RevId: 395896034

The new ConfigurationActivity can be used to
configure settings specifying Transformer inputs,
using checkboxes and submitted via a button.

PiperOrigin-RevId: 395826358

PiperOrigin-RevId: 395727438

Instead of selecting the base URL initially or when a load error occurs, it is now selected when a chunk or initialization chunk is created. The selected base URL is then assigned to `RepresentationHolder.lastUsedBaseUrl` that is excluded in case of a load error. For a next chunk another base URL will be selected by using the `BaseUrlExclusionList`.

#minor-release #exo-fixit

PiperOrigin-RevId: 395721221

The new name is consistent with the corresponding parameters to `onVolumeChanged`, `setDeviceVolume` and `onDeviceVolumeChanged`.

PiperOrigin-RevId: 395705288

Since playlist support was added, it's possible for the player to "have media"
and be in STATE_IDLE. The STATE_IDLE documentation therefore became incorrect.

Issue: #8946
#exofixit
#minor-release
PiperOrigin-RevId: 395653716

#exofixit

PiperOrigin-RevId: 395518824

This fixes DefaultDrmSessionManager so it can be used by a new Player
instance (by nulling out its reference to the playback thread, which is
unique per-Player instance). This only works if the
DefaultDrmSessionManager is 'fully released' before being used by the
second Player instance, meaning that the reference count of the manager
and all its sessions is zero.

#exofixit
#minor-release
Issue: #9099
PiperOrigin-RevId: 395490506

#exofixit

PiperOrigin-RevId: 395479329

I think this has been broken since https://github.com/google/ExoPlayer/commit/617267bfcf20c500fb4a3cfdff7104e4d88261a7 (which was trying to fix
the same problem).

This change initializes `rootDir` to always be the current project (i.e. ExoPlayer)
directory. From the [Gradle docs](https://docs.gradle.org/current/userguide/working_with_files.html#sec:single_file_paths):
> What happens in the case of multi-project builds? The file() method
> will always turn relative paths into paths that are relative to the
> current project directory, which may be a child project.

We can also then remove exoplayerRoot completely and simplify the local
dependency instructions.

* #minor-release
* #exofixit
* Issue: #9403

PiperOrigin-RevId: 395478121

SubtitleExtractor is using IndexSeekMap with only one position to
indicate that its output is seekable. SubtitleExtractor is keeping Cues
in memory anyway so more seek points are not needed. SubtitleExtractor
gets notified about seek occurrence through seek() method. Inside that
method extractor saves seekTimeUs, and on the next call to read()
extractor outputs all cues that should be displayed at this time and
later.

PiperOrigin-RevId: 395477127

track types.

PiperOrigin-RevId: 395460563

Some server will send partial URIs in the RTP-Info header, while the RTSP spec
requires absolute URLs.

Issue: #9346

#exofixit

PiperOrigin-RevId: 395452741

PiperOrigin-RevId: 395444714

Issue #9284

PiperOrigin-RevId: 395443015

PiperOrigin-RevId: 395438728

#minor-release #exofixit
Issue: #9370
PiperOrigin-RevId: 395429794