Commit graph

700 commits

Author SHA1 Message Date
huangdarwin
cf768329e6 Effect: Rename FrameProcessor
Rename FrameProcessor to VideoFrameProcessor, and GlEffectsFrameProcessor to
DefaultVideoFrameProcessor.

Most changes are semi-mechanical, semi-manual find-replace, preserving case:
* "FrameProc" -> "VideoFrameProc" (ex. FrameProcessor -> VideoFrameProcessor, and
   FrameProcessingException -> VideoFrameProcessingException)
* "GlEffectsVideoFrameProc" -> "DefaultVideoFrameProc"

PiperOrigin-RevId: 509887384
2023-02-17 11:41:06 +00:00
andrewlewis
41a03dd8a6 Fix some minor nits
PiperOrigin-RevId: 509879029
2023-02-17 11:40:13 +00:00
tofunmi
7e33bdfc94 Change FrameProcessor.create() inputTrackType parameter to a boolean
PiperOrigin-RevId: 509808913
2023-02-15 18:17:52 +00:00
andrewlewis
f03a6ba0f0 Skip tests if muxing is unsupported
PiperOrigin-RevId: 509802784
2023-02-15 18:17:00 +00:00
samrobinson
3608c2e831 Use MediaFormatUtil for creating MediaFormat from Format.
PiperOrigin-RevId: 509785247
2023-02-15 12:14:10 +00:00
samrobinson
79a3464014 Clarify the mime type used in EncoderUtilTest.
PiperOrigin-RevId: 509750806
2023-02-15 12:12:33 +00:00
samrobinson
ee8832ff21 Align ASP and VSP on findSupportedMimeTypeForEncoder/Muxer logic.
* Moved the logic to SamplePipeline.
* Pass the requested values via Format.
* Moved exception throwing inside the methods.
* Build up the mimeTypesToCheck as a set - removing possible duplicate
checks.
* Simplified logic that calls the findSupportedMimeType method.
* Improved javadoc.

PiperOrigin-RevId: 509594062
2023-02-15 12:11:42 +00:00
samrobinson
ccc349abfd Preserve aspect ratio when scaling resolution is insufficient.
PiperOrigin-RevId: 509546771
2023-02-15 12:10:48 +00:00
claincly
3aca3ad170 Use ColorInfo.Builder in transformer and common.
Because the ColorInfo constructor is deprecated.

PiperOrigin-RevId: 509468663
2023-02-14 10:28:33 +00:00
samrobinson
c94adf9041 Generalize getSupportedEncodersForHdr to return List<MediaCodecInfo>.
This now matches EncoderUtil.getSupportedEncoders return type.

PiperOrigin-RevId: 509222078
2023-02-13 15:33:02 +00:00
huangdarwin
fdf636bc7e Test: Move FileUtil to mh from mh.analysis.
FileUtil is only ever used in mh, and never in mh.analysis

PiperOrigin-RevId: 509206721
2023-02-13 14:12:46 +00:00
huangdarwin
cf089b34f0 HDR: Remove HDR-specific error codes.
It may be confusing for 3P apps, for us to have separate error codes for (1) if
encoding HDR is not supported at all by the device, and (2) if encoding the
format, which happens to be HDR, is not supported by the device. Instead, we can
communicate this in the error message.

PiperOrigin-RevId: 509188666
2023-02-13 12:22:55 +00:00
kimvde
fedb74907e Handle when some MediaItems require transcoding but others don't
- For single-asset, the behavior stays the same. Transcode if and only
  if it's necessary,
- For constrained multi-asset, always transcode, except if the setter to
  transmux is set. This is to avoid failing if a MediaItem that doesn't
  require transcoding is followed by a MediaItem that does require
  transcoding.

PiperOrigin-RevId: 508097798
2023-02-14 14:22:52 +00:00
kimvde
16db2bd0a1 Add an API entry point to pass a Composition
PiperOrigin-RevId: 508031337
2023-02-08 14:11:13 +00:00
huangdarwin
0c0c972ea0 Effect: Create GlEffect.isNoOp to simplify Transformer.
This will also allow us to skip transcodes in the future for other effects, like
cropping, color effects, etc.

PiperOrigin-RevId: 507765618
2023-02-08 14:07:41 +00:00
kimvde
c434cc0c9f Rename TransformationResult to ExportResult
Also replace some usages of deprecated Transformer listeners with the new
ones.

PiperOrigin-RevId: 507743860
2023-02-08 14:06:51 +00:00
tofunmi
9224a36add Update CompositeAssetLoader to override queueInputBitmap
PiperOrigin-RevId: 507515587
2023-02-08 14:03:17 +00:00
kimvde
0eb11e269c Rename startTransformation to start
Also update some Javadoc in Transformer

PiperOrigin-RevId: 507395956
2023-02-08 13:59:41 +00:00
tofunmi
4e3c6c6167 Update sample pipelines and frame processors to handle image input.
PiperOrigin-RevId: 506965394
2023-02-08 13:58:50 +00:00
huangdarwin
c45859dde1 HDR: Move codec errors from VideoSamplePipeline
It doesn't actually make sense for them to be placed in the Transformer, because the error's root causes are actually only in codecs. Also, a few codec errors were
repeated, so deduplicate these instances

PiperOrigin-RevId: 506937695
2023-02-08 13:57:57 +00:00
tofunmi
f67569d2dd Update FrameProcessor.create() to accept an input track type.
Based on [this conversation thread](https://chat.google.com/room/AAAA--f88ao/76Rem_cRCK8), I've opted to update the existing FrameProcessor.create() rather than deprecate it, as it is unlikely to be in use by apps outside google3.

PiperOrigin-RevId: 506920930
2023-02-08 13:57:02 +00:00
huangdarwin
c4faae6b03 Demo: Request READ_MEDIA_VIDEO on API 33+
More info in: https://developer.android.com/about/versions/13/behavior-changes-13#granular-media-permissions

PiperOrigin-RevId: 506908079
2023-02-08 13:56:06 +00:00
kimvde
9cb2b6e196 Update Composition structure to take List instead of ImmutableList
This is more flexible for apps and more consitent with the Player API.

PiperOrigin-RevId: 506901645
2023-02-08 13:55:14 +00:00
samrobinson
e2adb567bf Expand createNoSupportedMimeTypeException for HDR ColorInfo case.
PiperOrigin-RevId: 506900817
2023-02-08 13:54:22 +00:00
kimvde
9fdc64785a Adapt TransformationResult for multi-asset
PiperOrigin-RevId: 506898392
2023-02-08 13:53:27 +00:00
samrobinson
2754529ce7 Refactor TransformationException.createForCodec method overloads.
* Overload added `(cause, errorCode, isVideo, isDecoder, details)`,
where `details` is a string of values to be added to the error message
of the `TransformationException`.
* Overload with `MediaFormat` and `mediaCodecName` moved to
`DefaultCodec`, because all usages of that overload were from
`DefaultCodec`, and this allows a simplified API because of internally
stored values.
* `mediaCodecName` removed from overload that takes a `Format`.
* Reordered `createForCodec` parameters.

PiperOrigin-RevId: 506895268
2023-02-08 13:52:32 +00:00
kimvde
dce83d70c5 Rename Transformer callbacks
PiperOrigin-RevId: 506890459
2023-02-08 13:51:40 +00:00
samrobinson
0b7679ed88 Implement a ChannelMixingAudioProcessor.
PiperOrigin-RevId: 506886903
2023-02-08 13:50:45 +00:00
claincly
3b7ebecf16 Prefer hardware encoders in EncoderSelector.
In encoding small and odd-numbered resolutions, like `316x61` ([this image](https://upload.wikimedia.org/wikipedia/commons/6/65/100winners.png)), the current fallback logic prefers a software encoder to hardware ones. The assumption was, the encoder factory applies the encoder size alignment and changes the resolution to `316x60` for SW encoders and `316x64` for HW ones. SW encoders is selected because the supported resolution 60 is closer to requested 61, than the hardware supported 64.

This change changes the default encoder selection process to only expose hardware encoders if there is any.

PiperOrigin-RevId: 506879983
2023-02-08 13:49:52 +00:00
kimvde
4094aef9a5 Rename inputFormat to firstInputFormat in multiple places
With multi-asset, the sample pipelines can process more than one
MediaItem. The renaming makes it clear that the format passed to the
SamplePipeline constructors is the one corresponding to the first
MediaItem. Indeed, the first format is the one used to configure the
SamplePipelines.

PiperOrigin-RevId: 506879260
2023-02-08 13:48:59 +00:00
samrobinson
ed5af63227 Turn off ExoPlayer metrics reporting when used by Transformer.
This avoids affecting ExoPlayer metrics with non-typical usage.

PiperOrigin-RevId: 506878231
2023-02-08 13:48:06 +00:00
tofunmi
bffa6a9653 Update duration & frame rate javadoc in EditedMediaItem
PiperOrigin-RevId: 506874799
2023-02-08 13:47:10 +00:00
kimvde
b5bb6e7619 Add MediaItem change listener
PiperOrigin-RevId: 506868341
2023-02-08 13:46:17 +00:00
kimvde
77ae41354e Use CompositeAssetLoader in Transformer
PiperOrigin-RevId: 506863538
2023-02-08 13:45:22 +00:00
tofunmi
47b59f98e1 Add ImageAssetLoader and ImageConfiguration.
PiperOrigin-RevId: 506619637
2023-02-08 13:43:40 +00:00
samrobinson
656a1d9475 Clarify case where HDR encoder and muxer have no shared mime type.
The prior version (with the call to createEncodingException) could
never occur as select...SupportedMimeType already checks for HDR
editing support. This change ensures we throw before creating an
encoder, gives a better error code and allows future simplifications
around createForCodec (see child CL).

PiperOrigin-RevId: 506308290
2023-02-02 15:35:00 +00:00
kimvde
1c912e5c50 Pass a Composition to Transformer callbacks
PiperOrigin-RevId: 506304101
2023-02-02 15:34:03 +00:00
kimvde
2c690618e5 Undeprecate startTransformation(MediaItem, String)
This overload is helpful to apps transcoding a MediaItem without edits.

PiperOrigin-RevId: 505987852
2023-02-01 10:39:55 +00:00
kimvde
d5035123b4 Make Composition fields public
Transformer callbacks will take a Composition instead of a MediaItem.
Apps should be able to see what this Composition contains.

PiperOrigin-RevId: 505976561
2023-02-01 10:39:02 +00:00
huangdarwin
0b1a904c07 HDR: Add device checks and mh for GL tone mapping PixelTests.
Add checks to GL tone-mapping pixel tests, to ensure the device's decoder, API
version, and OpenGL implementation support GL tone-mapping before attempting it.

These tests should be run on mobile harness, to detect per-device failures, and
so are moved to transforemr/mh. Per b/263395272, these tests should ultimately
be in an effect/mh directory.

PiperOrigin-RevId: 505749974
2023-02-01 10:37:09 +00:00
samrobinson
ff56b7d294 Add check for isIdentity in ChannelMappingMatrix.
Make clearer the intermediate matrix property names.

PiperOrigin-RevId: 505732563
2023-02-01 10:35:19 +00:00
samrobinson
c2b0d1b756 Add ChannelMixingMatrix property unit tests.
PiperOrigin-RevId: 505720834
2023-02-01 10:33:32 +00:00
kimvde
f5e31989ab Pass an EditedMediaItem to AssetLoader.Factory
PiperOrigin-RevId: 505671326
2023-02-01 10:32:37 +00:00
kimvde
32d4686c56 Add error message if track is added during transformation
PiperOrigin-RevId: 505670386
2023-02-01 10:31:39 +00:00
kimvde
1d968c3a55 Remove ParcelFileDescriptor output from Transformer
ParcelFileDescriptor is quite specific and removing it allows to have
less overloads of startTransformation.

A follow-up CL will undeprecate the overload that takes a MediaItem.

PiperOrigin-RevId: 505670321
2023-02-01 10:30:44 +00:00
huangdarwin
181564e026 Transformer: Make it clear that getExpectedColorInfo is input.
Otherwise, it's not clear if it's the expected output.

Renaming-only change. No functional change intended.

PiperOrigin-RevId: 505103740
2023-02-01 10:27:51 +00:00
samrobinson
5e44af0ad9 Generalise UnhandledAudioFormatException for non-input use cases.
PiperOrigin-RevId: 505084963
2023-02-01 10:24:59 +00:00
kimvde
b27cc56851 Add EditedMediaItemSequence and Composition objects
PiperOrigin-RevId: 505047245
2023-02-01 10:21:22 +00:00
kimvde
43aace03cf Make setResolution package private
- Usages in 1P apps have been removed.
- setResolution should be removed when refactoring fallback.

PiperOrigin-RevId: 505043425
2023-02-01 10:20:19 +00:00
kimvde
c3934c532c Move flattenForSlowMotion to EditedMediaItem
PiperOrigin-RevId: 504867150
2023-02-01 10:19:24 +00:00
samrobinson
a5a59df44c Move audio buffer/array test utility methods to TestUtil.
PiperOrigin-RevId: 504611069
2023-02-01 10:11:54 +00:00
kimvde
e8ffc7b6f8 Move removeAudio/Video to EditedMediaItem
Also add a Builder to EditedMediaItem to avoid having a constructor with
many optional parameters, or a chain of constructors.

PiperOrigin-RevId: 504588544
2023-01-25 18:47:18 +00:00
samrobinson
030edb0e4a Use EMPTY_BUFFER in SpeedChangingAudioProcessorTest.
PiperOrigin-RevId: 504264862
2023-01-25 18:39:01 +00:00
samrobinson
18f8e9115f Consolidate TransformationResult.transformationException test usage.
PiperOrigin-RevId: 504257627
2023-01-25 18:37:02 +00:00
samrobinson
d4ce4480ed Move AudioMixer classes from transformer.audio to transformer package.
Transformer convention has been to avoid splitting into packages unless
necessary.

See https://jlbp.dev/JLBP-2: "Prefer fewer packages over more packages
to avoid unnecessarily publicizing internal details, since any
dependency across package boundaries needs to be public.

PiperOrigin-RevId: 503463294
2023-01-23 12:36:57 +00:00
samrobinson
306ce6e3a1 Don't use transformationResult with timeout/unexpected exceptions.
PiperOrigin-RevId: 503187291
2023-01-23 12:31:21 +00:00
kimvde
2cb4e3d71e Remove usages of deprecated startTransformation
PiperOrigin-RevId: 503138745
2023-01-23 12:27:00 +00:00
kimvde
aa72b45cdf Make startTransformation methods take an EditedMediaItem
Usages of the deprecated methods in Transformer.Builder will be removed
in a follow-up CL.

PiperOrigin-RevId: 502889423
2023-01-23 12:24:44 +00:00
kimvde
d4db33a535 Avoid re-encoding if video effects are no-op
This is to avoid regressions introduced by removing the convenience
methods from TransformationRequest.

PiperOrigin-RevId: 502864512
2023-01-23 12:23:42 +00:00
samrobinson
6dc119a8ab Add ColorInfo to TransformationResult.
TESTED: Manually verified the ColorInfo is propagated when VSP is used.
PiperOrigin-RevId: 502843773
2023-01-23 12:21:20 +00:00
samrobinson
dfa98ae791 Generate silent audio if no audio track is available.
To always generate silent audio, `removeAudio(true)` can be used in conjunction.

PiperOrigin-RevId: 502814315
2023-01-18 12:03:59 +00:00
kimvde
b0f82767aa Add EditedMediaItem class
This class will be used in a follow-up CL.

PiperOrigin-RevId: 502615323
2023-01-18 12:03:12 +00:00
samrobinson
a3b0708d31 Add resolution fallback for 25% of requested.
If a device only supports 1920x1080 as maximum resolution, then adding
the 25% case ensures 8k is reduced correctly.

PiperOrigin-RevId: 502588364
2023-01-18 12:01:02 +00:00
samrobinson
d092b5261e Add a unit test to check 2/3 resolution supported.
PiperOrigin-RevId: 502573469
2023-01-18 12:00:08 +00:00
kimvde
574fea39b6 Add CompositeAssetLoader
This is an AssetLoader that wraps a sequence of AssetLoaders. It will
be used for constrained multi-asset.

This class can currently only concatenate media items with the exact
same format.

PiperOrigin-RevId: 502525796
2023-01-18 11:57:03 +00:00
kimvde
7803716a77 Remove setScale and setRotationDegrees from TransformationRequest
Also remove usages of TransformationRequest convenience methods
(setScale, setRotationDegrees and setResolution).

Some usages of setResolution can't be removed yet because they are used
for fallback.

PiperOrigin-RevId: 502415748
2023-01-17 02:14:20 +00:00
kimvde
15ba0c5fa6 Add the possility to shift frame timestamps in SampleConsumer
This is needed for constrained multi-asset to shift the timestamps of
the media items that are not the first in the sequence.

PiperOrigin-RevId: 502409923
2023-01-17 02:12:48 +00:00
samrobinson
1eeccb6c69 Move SonicAudioProcessor to media3.common module.
PiperOrigin-RevId: 501881646
2023-01-17 02:04:57 +00:00
claincly
a82fcdefcb Allow forcing duration in FrameworkMuxer.
PiperOrigin-RevId: 501865706
2023-01-17 02:03:24 +00:00
huangdarwin
d1e03a41ab HDR: Implement PQ to SDR tone-mapping.
Tested manually on the Pixel 7 and Samsung S10.

PiperOrigin-RevId: 501626354
2023-01-17 01:59:21 +00:00
huangdarwin
d300b37a55 Transformer: Clarify setResolution javadoc.
This class may be removed soon, but in the meantime clarify this method's
javadoc summary fragment to make it marginally clearer that this only affects
the "displayed" height instead of the "encoded" height.

PiperOrigin-RevId: 501582219
2023-01-17 01:57:38 +00:00
huangdarwin
e47307d95f Transformer: Simplify EncoderWrapper rotationDegrees logic.
Small refactoring change to simplify the logic a tiny bit by removing one
unnecessary variable. No functional change intended.

PiperOrigin-RevId: 501566533
2023-01-17 01:56:09 +00:00
samrobinson
d2c5a1bfb9 Move BaseAudioProcessor abstract class to common.
This is a prerequisite step to making the `ResamplingAudioProcessor` public.

PiperOrigin-RevId: 501545561
2023-01-17 01:55:29 +00:00
samrobinson
13537a170b Allow Muxer.writeSampleData to take @C.BufferFlag int flags.
PiperOrigin-RevId: 501314812
2023-01-17 01:52:27 +00:00
kimvde
8aaab01841 Remove setDecoderFactory from Transformer
It makes more sense to have it in the AssetLoader now that decoding is
done there, particularly as the decoder factory should rarely be
customized.

Also remove the setter from the AssetLoader.Factory because it's
uncommon to have setters in a factory.

PiperOrigin-RevId: 501244974
2023-01-17 01:49:36 +00:00
kimvde
63b8cae263 Add a queue at the start of the buffer SamplePipelines
This improves performance and makes the code more intuitive.

PiperOrigin-RevId: 501220234
2023-01-17 01:48:51 +00:00
kimvde
9880926dd5 Remove setters from AssetLoader.Factory
It's unusual to have setters on a Factory.

PiperOrigin-RevId: 501212264
2023-01-17 01:47:57 +00:00
steveanton
9a9da0ab8e Add an audio mixer that combines concurrent audio sources
Design document: go/me-android-audio-mixer

PiperOrigin-RevId: 501048758
2023-01-17 01:45:12 +00:00
samrobinson
316174b6fb Make EncoderBitrateProvider and implementations package private.
There is no API to allow applications to use these currently. Until
that exists, these classes do not need to be public.

PiperOrigin-RevId: 500792401
2023-01-10 18:38:53 +00:00
samrobinson
5a86644547 Add audio and video values from Format to TransformationResult.
PiperOrigin-RevId: 500789076
2023-01-10 18:38:11 +00:00
samrobinson
77f26264a3 Split IAE and ISE cases in MuxerWrapper and improve javadoc.
PiperOrigin-RevId: 500786191
2023-01-10 18:37:21 +00:00
samrobinson
ee5e3c0243 Improve docs and split audio/video order in TransformationResult.
PiperOrigin-RevId: 500776260
2023-01-10 18:36:43 +00:00
kimvde
b4f820d2af Rename SampleConsumer dequeueInputBuffer to getInputBuffer
This makes more sense as SampleConsumer.dequeueInputBuffer returns the
same buffer as long as it is not queued.

PiperOrigin-RevId: 500631982
2023-01-10 18:35:57 +00:00
kimvde
98bc817fe7 Fix sample interleaving
Whether to write a sample or not was based on the timestamp of the
previous sample, rather than the current sample.

PiperOrigin-RevId: 500195279
2023-01-10 18:35:11 +00:00
kimvde
b11fe97f66 Split ExoPlayerAssetLoaderRenderer
Split ExoPlayerAssetLoaderRenderer into audio and video renderers.

PiperOrigin-RevId: 500102256
2023-01-10 18:34:26 +00:00
samrobinson
f32b632b09 Refactor MuxerWrapper handling of track details.
This brings together the multiple details about a muxer track, and
reduces the need for additional variables and more complicated track
tracking.

PiperOrigin-RevId: 499872145
2023-01-10 18:31:40 +00:00
kimvde
cfc61655ce Rename the SamplePipelines
The old names are not really correct anymore because:
- The Audio/VideoTranscodingSamplePipelines do not decode anymore.
- The pipelines now mux the encoded data.

PiperOrigin-RevId: 499498446
2023-01-04 21:56:14 +00:00
samrobinson
37f8a0bb6b Improve encoder resolution capability checking.
Whilst testing fallback functionality, I found that we were
aggressively reducing the resolution if it was not supported. A quick
test found that we could reduce by a much smaller increments.
Performance wise it appears these checks are incredibly quick.

The code for checking supported sizes was duplicated, with one case
having a bug because of this duplication (2/3 case). This CL abstracts
this into a loop.

PiperOrigin-RevId: 499497646
2023-01-04 21:55:15 +00:00
kimvde
2eb255431f Merge BaseSamplePipeline and SamplePipeline
PiperOrigin-RevId: 499469006
2023-01-04 21:54:06 +00:00
kimvde
d4491427de Move video decoding to AssetLoader
PiperOrigin-RevId: 499454273
2023-01-04 21:50:58 +00:00
kimvde
2cda644915 Remove unnecessary exceptions in tests
PiperOrigin-RevId: 499160043
2023-01-04 21:47:57 +00:00
kimvde
bd0d61d80d Misc small fixes
- Improve AssetLoader Javadoc
- Fix Javadoc of sample pipelines
- Improve Javadoc of Transformer.startTransformation
- Move thread hops for Transformer listener callbacks to
  TransformerInternal

PiperOrigin-RevId: 499156604
2023-01-04 21:46:59 +00:00
samrobinson
4541db3541 Deprecated onTransformationError methods are not called.
When a listener method is deprecated, the new method should (by
default) called through to the deprecated one. This is because any
class that implements the method that is now deprecated needs to still
receive that callback.

It appears when onTransformationError(MediaItem, Exception) was
deprecated in favour of onTransformationError(MediaItem,
TransformationException), this deprecation was the wrong way round, and
the newer callback - onTransformationError(MediaItem,
TransformationResult, TransformationException) continued this mistake.

This CL now corrects this.

PiperOrigin-RevId: 498221504
2023-01-04 21:45:49 +00:00
kimvde
310434a8f9 Remove mentions of player in TransformationException
PiperOrigin-RevId: 497921432
2023-01-04 21:44:40 +00:00
samrobinson
88fd9e18f5 Simplify TransformerEndToEndTest and TransformerTestRunner.
PiperOrigin-RevId: 497335605
2023-01-04 21:42:37 +00:00
samrobinson
d09fdd1b52 Add a MuxerWrapper listener for events.
Events on the wrapper should be propagated to TransformerInternal as
soon as they occur, switching round the process so TransformerInternal
does not have to query MuxerWrapper.

This CL is a prerequisite for the child CL, where MuxerWrapper can
simplify the internal state and logic.

PiperOrigin-RevId: 497267202
2023-01-04 21:41:41 +00:00
tofunmi
283cbcb464 Specify units for VideoEncoderSettings.
PiperOrigin-RevId: 497113780
2023-01-04 21:37:18 +00:00
kimvde
e8572be6d5 Ensure AssetLoader callbacks are always called in the right order
Before, it was possible for onDurationUs() and onAllTracksRegistered()
to be called before onTrackAdded() because they are called from
different threads. onDurationUs() and onAllTracksRegistered() are called
from the Transformer internal thread, and onTrackAdded() is called from
the playback thread.

PiperOrigin-RevId: 497102556
2023-01-04 21:35:35 +00:00
kimvde
431108063c Specify the types of samples output by AssetLoader
This is useful if an app passes a custom AssetLoader that can only
output encoded or decoded samples.

PiperOrigin-RevId: 497097492
2023-01-04 21:34:25 +00:00
kimvde
f67849afa1 Add IntRange annotation to onTrackCount
PiperOrigin-RevId: 496942702
2023-01-04 21:28:49 +00:00