SDK / exoplayer

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=120123489

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=120123335

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=120123223

This is the first step toward merging of RollingSampleBuffer
and DefaultTrackOutput, which is a precursor to removing some
indirection for DASH/SS playbacks, and to moving HLS playbacks
to use a single output buffer per track (with inline splicing).

Where this is heading is that sample format changes will
eventually be attached to samples in the rolling buffer. This
will eliminate the need for piping sample formats around the
edges of the rolling buffer (e.g. via redirection in
ChunkExtractorWrapper and BaseMediaChunk.getSampleFormat).
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=120123093

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=120119973

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=120115490

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=120107182

There's a more nuanced version of this where we actually
disable on the loading side, but it's quite tricky to get
the threading just right. I have a change that I'll
probably manage to clean up and send out at some point.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=120106967

Oops, forgot this from my previous CL!
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=120104992

Issue: #1428
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=119952373

- Use same constant for unknown/unset microsecond times/durations.
- Change constant values to be nowhere near the "normal" range.
- Misc cleanup.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=119944019

For DASH + SS, sample data is currently plumbed through:

Extractor
->ChunkExtractorWrapper
->ContainerMediaChunk
->DefaultTrackOutput
->RollingSampleNBuffer

This change bypasses the ContainerMediaChunk layer. It
should be possible to completely delete DefaultTrackOutput
in the future, but such a change may well be tied to
changes in HLS format splicing + how we buffer (or don't
buffer) disabled tracks.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=119853857

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=119843448

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=119842923

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=119842861

prepare(SampleSource) is renamed to setSource(SampleSource). The player
immediately transitions to STATE_BUFFERING when the source is set, at which
point doSomeWork is called.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=119838825

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=119759105

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=119758106

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=119752741

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=119748182

Allow styling <v Someone>Hello</v> with ::cue(v[voice="Someone"]) { ... }.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=119748009

TrackRenderer and SampleSourceTrackRenderer both now use a TrackStream
so they can be merged.

(This may also be useful for adding playlist support, in case TrackStreams need
to be replaced during playback.)
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=119743228

This CL allows style blocks to reference elements. For example: we could style
a cue with text "Sometimes <b>bold</b> is not enough" with the style block
::cue(b) { ... }.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=119734779

This is in preparation for the player knowing about the live
window, at which point only correct playback positions will be
passed into ChunkSource implementations. Note that both
implementations bound the chunk index within range in case of,
for example, off-by-one errors caused by very recent manifest
updates.

This will temporarily cause live playbacks to always start at
the beginning of the current live window (we'll be trying to
play from t=0, which will be adjusted to the start of the live
window as a result of the bounding).
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=119733559

FrameworkSampleSource will still be useful for audio, where
sample interleaving isn't an issue. We could optionally add
a "don't wait for first frame" boolean to the video renderer
if we *really* need to keep some form of this workaround in
place, but I'd rather not do so for now.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=119733224

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=119732992

Also add jni/flac directory to .gitignore.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=119730955

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=119655941

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=119643009

In CSS, ids are references using #. The absence of # references elements.

NOTE: If the id of a cue was "1", we support its reference with ::cue(#1).
In CSS, however, this is not valid, and the number should be escaped with
\3 as in ::cue(\31). We still do not use number escaping (and I doubt
whether we should at some point).
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=119634708

This CL removes a warning by adding the import, and removes a qualified reference in the process.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=119618343

This CL adds the support of CSS styling in Cues through id and "universal" cue selector.
The more sophisticated selectors will be left for later, because they requier a bit more
complex logic. Also narrowed a little bit the responsibilities of the WebvttCueParser to
move some to the WebvttParser.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=119547731

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=119544516

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=119532634

Both of these features are being promoted to first class
citizens in V2 (multi-period support will be handled via
playlists, seeking-in-window will be handled by exposing
the window/timeline from the player and via the normal
seek API). For now, it's much easier to continue the
refactoring process with the features removed.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=119518675

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=119393264

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=119211619

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=119182077

Note that the DataSourceInputStream read methods
are implementing a different interface (InputStream,
not DataSource), which is why -1 is still used in
that case.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=119180851

This method is needed by FlacExtractor to release native resources.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=119143922