SDK / exoplayer

PiperOrigin-RevId: 260164426

When using speed adjustment it was possible for playback to get stuck at a
period transition when the channel count changed: SonicAudioProcessor would be
drained at the point of the period transition in preparation for creating a new
AudioTrack with the new channel count, but during draining the incorrect (new)
channel count was used to calculate the output buffer size for pending data from
Sonic. This meant that, for example, if the channel count changed from stereo to
mono we could have an output buffer size that stored an non-integer number of
audio frames, and in turn this would cause writing to the AudioTrack to get
stuck as the AudioTrack would prevent writing a partial audio frame.

Use Sonic's current channel count when draining output to fix the issue.

PiperOrigin-RevId: 260156541

PiperOrigin-RevId: 258812820

Issue: #6222
PiperOrigin-RevId: 260146226

PiperOrigin-RevId: 259582498

1. Using the Locale on API<21 doesn't make any sense because it's a no-op
   anyway. Slightly restructured the code to avoid that.
2. API<21 often reports languages with non-standard underscores instead of
   dashes. Normalize that too.
3. Some invalid language tags on API>21 get normalized to "und". Use original
   tag in such a case.

Issue:#6153
PiperOrigin-RevId: 258773463

2-letter codes (ISO 639-1) are the standard Android normalization and thus we
should prefer them to 3-letter codes (although both are technically allowed
according the BCP47).

This helps in two ways:
 1. It simplifies app interaction with our normalized language codes as the
    Locale class makes it easy to convert a 2-letter to a 3-letter code but
    not the other way round.
 2. It better normalizes codes on API<21 where we previously had issues with
    language+country codes (see tests).
 3. It allows us to normalize both ISO 639-2/T and ISO 639-2/B codes to the same
    language.

PiperOrigin-RevId: 258729728

Issue:#6192
PiperOrigin-RevId: 258592902

If we use the default start position, we currently resolve it immediately
even if we need to play an ad first, and later try to project forward again
if we believe that the default start position should be used.

This causes problems if a specific start position is set and the later
projection after the preroll ad shouldn't take place.

The problem is solved by keeping the content position as TIME_UNSET (= default
position) if an ad needs to be played first. The content after the ad can
then be resolved to its current default position if needed.

PiperOrigin-RevId: 258583948

Issue: #6184
PiperOrigin-RevId: 258527533

PiperOrigin-RevId: 257668797

PiperOrigin-RevId: 256751627

PiperOrigin-RevId: 256680382

PiperOrigin-RevId: 256573352

PiperOrigin-RevId: 256526365

This gives a caller greater confidence that the methods have no
side effects, and remove any nullness issues with these methods
accessing @Nullable member variables.

PiperOrigin-RevId: 256525739

- Inline some unnecessarily split out helper methods
- Clear ExtractorInput from FlacDecoderJni data after usage
- Clean up exception handling for StreamInfo decode failures

PiperOrigin-RevId: 256524955

PiperOrigin-RevId: 256202135

PiperOrigin-RevId: 248533906

r2.10.3

PiperOrigin-RevId: 257630168

PiperOrigin-RevId: 257185017

PiperOrigin-RevId: 257184313

PiperOrigin-RevId: 257161518

Sending MESSAGE_PREPARE_SOURCE should happen last in the constructor.
It was previously happening before initialization finished (and in
particular before pendingMediaPeriods was instantiated).

Issue: #6146
PiperOrigin-RevId: 257158275

Currently, we sometimes apply new playback parameters directly and sometimes
through the list of playbackParameterCheckpoints. Only when using the checkpoints,
we also reset the offset and corresponding position for speedup position
calculation. However, these offsets need to be changed in all cases to prevent
calculation errors during speedup calculation[1].

This change channels all playback parameters changes through the checkpoints to
ensure the offsets get updated accordingly. This fixes an issue introduced in
https://github.com/google/ExoPlayer/commit/31911ca54a13b0003d6cf902b95c2ed445afa930.

[1] - The speed up is calculated using the ratio of input and output bytes in
SonicAudioProcessor.scaleDurationForSpeedUp. Whenever we set new playback
parameters to the audio processor these two counts are reset. If we don't reset
the offsets too, the scaled timestamp can be a large value compared to the input
and output bytes causing massive inaccuracies (like the +20 seconds in the
linked issue).

Issue:#6117
PiperOrigin-RevId: 256533780

Before this change we'd release the audio track and create a new one as soon
as audio processors had drained when reconfiguring.

Fix this behavior by stop()ing the AudioTrack to play out all written data.

Issue: #2446
PiperOrigin-RevId: 244812402

PiperOrigin-RevId: 257138448

We currently handle most the control code logic after handling special
characters. This includes filtering out repeated control codes and checking
for the correct channel. As the special character sets are control codes as well,
these checks should happen before parsing the characters.

Issue:#6133
PiperOrigin-RevId: 256993672

PiperOrigin-RevId: 256676196

PiperOrigin-RevId: 256147805

1. Only output video starting from a keyframe
2. When calculating the timestamp offset to adjust live streams to start
   at t=0, use the timestamp of the first tag from which a sample is actually
   output, rather than just the first audio/video tag. The test streams in
   the referenced GitHub issue start with a video tag whose packet type is
   AVC_PACKET_TYPE_SEQUENCE_HEADER (i.e. does not contain a sample) and whose
   timestamp is set to 0 (i.e. isn't set). The timestamp is set correctly on
   tags that from which a sample is actually output.

Issue: #6111
PiperOrigin-RevId: 256147747

Issue: #6047
PiperOrigin-RevId: 255992898

Issue:#6109
PiperOrigin-RevId: 255933121

PiperOrigin-RevId: 255584000

ISSUE: #6093
PiperOrigin-RevId: 255471282

PiperOrigin-RevId: 255380796

Also add layer of indirection between code and the guide, to
make moving content easier going forward.

PiperOrigin-RevId: 255182216