SDK / exoplayer

This will remove the need to implement compat code handling very old API
versions where some symbols are not available, and it reduces the burden of
dealing with media framework issues around concurrent codec usage that are
worse on older API versions. Top apps that we've surveyed as potential users
for transformer library features are using API 21 or later.

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Sometimes the empty end of stream buffer has a non-zero
data limit. Calling flip first, resets the limit to the
position which is zero in these cases.

PiperOrigin-RevId: 413156455

The test extracts and decodes the first video frame in the test media, renders it to the frame editor's input surface and then processes data. It then reads back the output from the frame editor, converts it to a bitmap and then compares that with a 'golden' bitmap (which is just the same as the test media's first video frame).

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*** Original commit ***

Remove usage of @ForOverride.

Fixes the gradle compilation failures.

Gradle dependencies need revising if we want to be using this, as
checkerframework is ahead of their latest version, such that we
can't compile.

***

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Currently we prefer technical preferences set in the Parameters over
content preferences implied by the media. It proably makes more
sense in the opposite order to avoid the situation where a
non-default track (e.g. commentary) is selected just because it
better matches some technical criteria.

Also add comments explaining the track selection logic stages.

PiperOrigin-RevId: 412840962

When the input is not a slow motion video, then flattening should do
nothing, so there is no need to re-encode audio.

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Use @VisibleForTesting and add some comments for GL code.

Refactoring change only. No functional changes intended

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Issue: google/ExoPlayer#9719

#minor-release

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#minor-release
Issue: androidx/media#8
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This is already called in GlUtil.Program().

Tested by confirming that the demo-gl target still runs as expected.

Refactoring change only. No intended functional changes.

PiperOrigin-RevId: 412308564

And also tweak existing role flag logic to strictly prefer perfect
matches over partial matches.

Caveat: Video role flags only supported for fixed track selections
(same issue as Issue: google/ExoPlayer#9519).

Issue: google/ExoPlayer#9402
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Issue: google/ExoPlayer#9727

#minor-release

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This allows to check if the media metrics service is available outside
the actual constructor and to fail gracefully if it is missing.

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- This format is passed to the PassthroughPipeline, which doesn't use
  any decoder.
- In most other cases where it is used, it is not relevant that this
  format will be or has been passed to the decoder. What's relevant is
  that it is the format of the input.

PiperOrigin-RevId: 412093371

We need the filename of the output videos to be predictable, because
MobileHarness requires the exact filename to pull the file.

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Deprecates setContext() and moves the required Context arg into the constructor.

This way, the parameter can later be final and non-null, per the comment at:
http://go/https://github.com/androidx/media/commit/79f03bb1355b7e370991a1aafd580324d22e070e/depot/google3/third_party/java_src/android_libs/media/libraries/transformer/src/main/java/androidx/media3/transformer/TranscodingTransformer.java?left=s19&right=r12#97L

Also, fixes setOutputMimeType_unsupportedMimeType_throws by providing a context
in the builder, and updating the FrameworkMuxer#supportsOutputMimeType to catch
IllegalArgumentExceptions thrown by FrameworkMuxer#mimeTypeToMuxerOutputFormat.

PiperOrigin-RevId: 412053564

Fixes the gradle compilation failures.

Gradle dependencies need revising if we want to be using this, as
checkerframework is ahead of their latest version, such that we
can't compile.

PiperOrigin-RevId: 412004021

This change moves methods that are the same in
`TransformerAudioRenderer` and `TransformerVideoRenderer` to
`TransformerBaseRenderer`.

PiperOrigin-RevId: 411758928

This inheritance is really confusing because ExoPlayerImpl is not
a full Player interface implementation. It also claims to be an
ExoPlayer implementation in the Javadoc which isn't true in its
current state.

Removing the inheritance also allows to clean up some unused methods.

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This is documented on the setter already, but it seems to make sense to do this in the constructor as well for clarity.

Issue: google/ExoPlayer#9550
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PiperOrigin-RevId: 411657479

Before this change ExpPlayerImplInternal dropped a change of the playing period when a change in the timeline occurred that actually changed the playing period but we don't want to update the period queue. This logic also dropped the update of a skipped server side inserted preroll ad for which we want the periodQueue to 'seek' to the stream position after the preroll ad and trigger a SKIP discontinuity.

This change now introduces an exception so that a skipped SSI ad is still causing an update in the period queue which leads to a 'seek' and a discontinuity of type SKIP.

PiperOrigin-RevId: 411607299

Issue: google/ExoPlayer#9710
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Test failure message now also reports the number of different sizes.

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Document that apps should retain `GlUtil.Program` while the program is in use,
and keep a reference to attributes/uniforms within the program to make sure
they don't get GC'd causing any allocated buffers passed to GL to become
invalid.

Tested manually by running gldemo and transformer.

PiperOrigin-RevId: 411516894

This should have been done in
https://github.com/androidx/media/commit/21e659ef8e62d57be5ed77c80c1c80df94a8f952

PiperOrigin-RevId: 411073049

The features supported by `TranscodingTransformer` are a
superset of those supported by `Transformer` after merging
the video renderers in
https://github.com/androidx/media/commit/35c891a7bf7c18d2b906fe6a3b0325ca74bcf91f.
This change removes `TranscodingTransformer` and adds its features to
`Transformer`.

PiperOrigin-RevId: 411072392

Follow-up to a comment on
https://github.com/androidx/media/commit/ac8e418f3d28876ed38b0d6465793e4cdfb273ba
Buffers that are useful to pass to the sample/passthrough pipeline
should either contain data or the end of input flag. Otherwise, passing
these buffers along is unnecessary and may even cause the decoder to
allocate a new input buffer which is wasteful.

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