SDK / exoplayer

Split Cue Rendering up into a layout, background drawing and foreground
drawing phase so that issues with overlapping 608 captions are being prevented.

In order to force the SubtitlePainter to redraw cues

Alpha is stored in the first byte of an integer

Discard any spans that should not be applied because they don't belong
to what's in the current CC buffer.

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=129892143

If a renderer is reading ahead of the playing period, seeking within the
playing period would fail, because renderers would not be disabled but then try
to read from SampleStreams that have a released period.

Also, in the same circumstances, seeking within the reading period would fail,
because all renderers would be disabled, but their sample streams have already
been read. When they are reenabled they expect to see a format but don't
receive one.

In both cases, seeking can just clear the timeline. This only occurs in rare
circumstances when the player is reading ahead, so the cost of re-preparing
will not be incurred often, and allows the seeking logic to be simpler.

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=129891060

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=129871792

It's no longer used.

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=129870115

Issue #1712

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=129869936

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=129869741

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=129868070

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=129867969

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=129851843

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=129849825

Referential equality is going to become important for detecting
whether a SampleStream has been replaced, so we need to create
new instances as we do elsewhere.

This also enables multiple SampleStreams to be provided for a
single TrackGroup, as is also true for DASH and SmoothStreaming.
It's forbidden to ask for multiple SampleStreams from a single
TrackGroup currently, but we may choose to relax that at some
point (and indicate whether it's allowed as a flag on each
TrackGroup).

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=129842336

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=129787235

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=129748865

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=129747377

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=129733571

- Add build test to [] so it runs in presubmit
- Tweak README.md instructions
- Use symlinks to make the extension usable in Android
  Studio internally, without taking any special action
- Remove unnecessary dependencies
- Simplify setup instructions in README.md

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=129733466

Fixed CacheSpan regexp for line breaks characters in key.

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=129631446

- Support specifying a preferred text language.
- Score based selection for text/audio/other tracks.
- Prefer default tracks to non-default ones.
- Allow overriding of base select*Track methods.

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=129626994

When seekToPeriodPosition found that the seek destination period was already
prepared, it would not disable/re-enable renderers. This was fine if the
playing period wasn't changing, but in other cases the renderers would be left
reading the incorrect streams (and the underlying periods may have been
released).

Also, transition to the buffering state before re-enabling renderers, so that
the renderers are not started until leaving the buffering state.

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=129625632

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=129624395

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=129622239

Issue: #1714

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=129600348

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=129336905

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=129325922

- Enforce viewport constraints for fixed video track selection.
- Select best fixed video track, not the first one.
- Better handling of video tracks with unknown dimensions.
- Mini bug fix.

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=129226593

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=129212987

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=129201483

- Only setup a codec to allow adaptation to other compatible
  formats in the stream. If something like the mimeType is
  changing adaptation will never be possible, so there's no
  point.
- Incorporate maxInputSize into the reconfiguration logic.

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=129088464

On an edge case, player may get stuck when the renderers are ready but the buffer doesn't get full enough because of a fatal error in data source. An example state can be created by starting a live DASH stream and switching between normal and slow network connections.

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=129084824