SDK / exoplayer

The prototype is built upon Transformer and took many references from
TransformerAudioRenderer.

Please take a look and we can discuss more details.

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r2.15.0

The release note was put under 2.14.2 but the feature is
released in 2.15.0.

#minor-release

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The release note was put under 2.14.2 but the feature is
released in 2.15.0.

#minor-release

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- Remove ExoPlayer.Builder
- Copy SimpleExoPlayer.Builder to ExoPlayer
- Deprecate SimpleExoPlayer.Builder

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#minor-release

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These will all be needed in common to break dependencies
between decoder extension modules and the core module.

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#minor-release

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#minor-release

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Timeline is already abstract, so it can only be constructed from a
subclass anyway.

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This isn't needed now we've updated to Robolectric 4.6

Follow-up to https://github.com/google/ExoPlayer/commit/0df0df9aeece386b7421afde160e9009457512ab

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The result is plumbed back to `MediaCodecRenderer` via a new
`DrmSession#requiresSecureDecoder` method.

This allows us to use the `MediaDrm#requiresSecureDecoder` method added
in Android 12:
https://developer.android.com/reference/android/media/MediaDrm#requiresSecureDecoder(java.lang.String)

This change also removes
`FrameworkMediaCrypto#forceAllowInsecureDecoderComponents`, replacing it
with equivalent logic in `FrameworkMediaDrm#requiresSecureDecoder`.

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Adding a CHANGE_FRAME_RATE_STRATEGY_ALWAYS strategy is
omitted from this commit, since adding it is more complicated
than just plumbing it through and leaving everything else
unchanged. Specifically, VideoFrameReleaseTimeHelper would
need updating to behave differently when such a strategy is
enabled. It currently calls setFrameRate in cases such as
pausing, seeking and re-buffering, on the assumption that
changes to the underlying display refresh rate will only be
made if they can be done seamlessly. For a mode in which
this will not be the case, it makes more sense to stick to
the content frame-rate when these events occur. It may also
make sense to only use explicit content frame-rate values,
and not those inferred from individual frame timestamps.
Finally, for adaptive content containing a mix of frame-rates,
it makes sense to use the maximal frame-rate across all
variants, and to avoid calling setFrameRate on switches from
one variant to another.

Applications that know the frame-rate of their content can
set ExoPlayer's strategy to CHANGE_FRAME_RATE_STRATEGY_OFF and
then use setFrameRate directly on the output surface. Note that
this is likely to be a better option for apps than anything we
could implement in ExoPlayer, because the application layer
most likely knows the frame-rate of the content earlier than
ExoPlayer does (e.g., to perform the disruptive mode switch
at the same time as an activity transition).

Adding CHANGE_FRAME_RATE_STRATEGY_ALWAYS will be deferred
until there's clear demand for it. In the meantime, we'll
recommend the alternative approach above.

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Many GH users find it hard to print out RTSP messages if they use ExoPlayer
as an external dependency.

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#minor-release

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#minor-release

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This CL moves SubtitleDecoder and all its dependencies
to common in order to enable using it in extractor
module while implementing SubtitleExtractor.

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This CL introduces two classes:
* CueEncoder - encodes list of Cue object into byte array.
* CueDecoder - decodes byte array into list of Cue objects.

This two classes are necessary in order to push Cues through SampleQueue. This classes are meant to be used by subtitle Extractor.

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These API levels have both been finalized. We're also calling methods
from these API levels directly, which may not exist if a device is
running a non-finalized R or S release.

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Issue: #9252

#minor-release

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Issue: #9254

#minor-release

We used to allow only alphanumerical characters in session id. The spec also
allows "$", "-", "_", ".", "+" (RFC2326 Sections 3.4 and 15.1).

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