SDK / exoplayer

1. Copy label into derived formats
2. If audio is the primary track type, copy additional fields from
   the variant formats. This is probably a no-op in practice, since
   I don't think variant formats have these fields set anyway, but
   it seems like the right thing to do in case they ever are set in
   the future.

Note: It's a bit strange to use createXContainerFormat rather than
createXSampleFormat, but in practice the methods used here are
better matched for what we're trying to do.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=204467287

After [] we support default font size for TTML, relative to the cellResolution of the document. However, this introduced a bug that makes TTML font-size in such case always follow the cellResolution font size, even when SubtitleView.setApplyEmbeddedStyles(false) and SubtitleView.setApplyEmbeddedFontSizes(false) were used.

This CL updates the fix so that the default font-size using cellResolution works in the same way as other embedded styles, and can be turned off using setters from SubtitleView.

GitHub: #4491

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=204467033

For the MetadataRetriever, for certain queries, after setting up the player to
render a frame (by seeking to the position), sometimes the player will seek to
the same position and ignore the seek, leading to the frame not being captured,
leaving the retriever in deadlock, waiting for the frame forever. This CL adds
a retry timer to avoid this and make sure we can return query result after some
time.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=204460200

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=204451894

1. Prefer label and language values in the manifest to those in
   the media. This is particularly helpful if the sample format
   contains "und" as the language.
2. Copy label when deriving formats in HlsSampleStreamWrapper
3. When there's only one variant in HlsSampleStreamWrapper, use
   the regular copyWithManifestFormatInfo. This allows more
   information to be retained from the sample format.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=204340008

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=204302135

Add label attribute support for DASH audio/text

Add withSkippedAd method to AdPlaybackState. 

MKV Extractor flip default and forced flag values to their proper names

Issue: #4348

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=204261718

That allows to add listeners after the BandwidthMeter has been created which is
helpful as the BandwidthMeter instances are often long-lived static instances.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=204255299

Remove the static modifier from DefaultDashChunkSource::newMediaChunk and DefaultDashChunkSource::newInitializationChunk allowing for overrides.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=204167521

Issue:#2844
Issue:#3370
Issue:#2981

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=204149284

This allows to iterate through the available segments of the playlist.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=204100116

Add supports for reading duration for a PS stream by reading SCR values from
the header of packs at the start and at the end of the stream, calculating the
difference, and converting that into stream duration.

Github: #4476

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=203954752

It has now become an empty shell as the real TransferListener provides all its
methods.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=203950443

This allows more fine-grained analysis of transfers.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=203950327

There are only two types at the moment and we can therefore use a boolean.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=203937357

Also fixed showing "remove notification" when download is completed.

Issue:#4469
Issue:#4488

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=203927268

Libvpx: Support directly outputting YUV to SurfaceView. This is supposed to use hardware (not GPU) to convert YUV to RGB and overall use less power.

Power Comparison:

TextureView                          1080p         720p
                H264 HW              498, 496      507, 478
                VP9 RGB              1050, 1104    1185, 1152
                VP9 ANativeWindow    1070, 985     700, 674
GLSurfaceView
                VP9 YUV              1075, 1112    716, 635
SurfaceView
                H264 HW              419, 409      397, 377
                VP9 RGB              1044, 1139    654, 671
                VP9 ANativeWindow    975, 835      617, 623
                VP9 MediaCodec       683, 679      488, 476

Measures average current drawn mAH on a Nexus 6 at full brightness from time t=3 to t=95 seconds. The same clip was used for all tests. Two measurements were taken for each category.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=203847744

It's no longer text specific (it's used for metadata as well, and
in theory could apply to any stream in which samples contain multiple
sub-samples)

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=203767825

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=203766579

Until now, the streams were released and re-enabled for each type of stream
(primary, event, embedded) in that order. That leads to problems when replacing
streams from one type to another (for example embedded to primary).

This change restructures the track selection to:
1. Release and reset all streams that need to be released or replaced.
 1(a). Including embedded orphan streams.
2. Select new streams.

Issue:#4477

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=203751233

Where a device has this issue, it most likely applies to all
SOC vendor provided decoders, which are normally the only
video decoders other than the OMX.google software decoders
on the device. The fact we currently only blacklist for AVC
decoders is likely just a side effect of AVC's popularity.

I checked two devices already on the blacklist, and both
failed with other SOC vendor decoders on the device as well
(but passed if forced to use OMX.google decoders instead)

Issue: #4468

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=203728285

Viewport constraints apply to adaptive content even if the
actual playback isn't adaptive (i.e. because the selector
ends up making a fixed track selection).

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=203726831

- Support handling frame queries (i.e get frames at times, output to certain
sizes) from MetadataRetriever.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=203489788

If there is only one track, we can assume that both boxes refer to the same track
even if the track indices don't match.

Issue:#4083

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=203485872

MediaDrm.provideXResponse methods only accept the response
corresponding to the most recent MediaDrm.getXRequest call.
Previously, our code allowed the following incorrect call
sequence:

a = getKeyRequest
b = getKeyRequest
provideKeyResponse(responseFor(a));

This would occur in the edge case of a second key request
being triggered whilst the first was still in flight. The
provideKeyResponse call would then fail.

This change fixes the problem by treating responseFor(a)
as stale. Note that a slightly better fix would be to
defer calling getKeyRequest the second time until after
processing the response corresponding to the first one,
however this is significantly harder to implement, and is
probably not worth it for what should be an edge case.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=203481685

Both boxes should contain the same list of track indices. However, if only one
track index in each list does not match, we can just assume that these belong
together.

Issue:#4477

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=203481258

Issue: #4468

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=203479944

Since this is an ongoing problem, it's reasonable that we allow
developers to toggle these workarounds without too much hassle.

Issue: #4468

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=203364488

This allows to register a listener on an outer wrapping data source which
receives data transfer events from the wrapped source.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=203358981

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=203341457

This wires up recent changes of passing a transfer listener to the MediaSource and
allowing DataSources to accept new listeners.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=203280818