The framework opus decoder discards some samples after a call to
flush(). Because we flush a decoder that is being retained across an
input format change, this means that the start of audio gets truncated
when transitioning to a new opus stream. See also
https://android.googlesource.com/platform/frameworks/av/+/refs/heads/android10-release/media/libstagefright/codecs/opus/dec/SoftOpus.cpp.
Avoid this by recreating opus decoders instead of flushing them. It
seems fine to do this for all opus decoders as reinitialization should
be cheap, OEM-provided implementations may also discard samples and
playback shouldn't be interrupted on reinitialization due to the
downstream AudioTrack buffer.
PiperOrigin-RevId: 277458759
It's confusing that app:played_color also modifies the colors
that derive from it, but the corresponding setter does not. It
seems generally clearer just to define constants.
PiperOrigin-RevId: 273249557
Adding this callback makes sense for completeness (we have similar callbacks
for all other playback state properties), and also to detect audio focus loss
while buffering which would currently trigger no callback because isPlaying
is still false.
Issue:#6203
PiperOrigin-RevId: 271347351
The player may suppress playback when waiting for audio focus even if the
state==Player.READY. There is currently no getter or callback to obtain this
piece of information for UI updates or analytics.
Also, it's a important derived state to know whether the playback position is
advancing. Add isPlaying and the corresponding callback to allow retrieving
this information more easily.
Issue:#6203
PiperOrigin-RevId: 268921721
This changes the logic in the following ways:
- If no preferred language is matched, prefer better scores for the selected
audio language.
- If a preferred language is matched, always prefer the better match
irrespective of default or forced flags.
- If a preferred language score and the isForced flag is the same, prefer
tracks with a better selected audio language match.
PiperOrigin-RevId: 259707430
The fLaC prefix is included in the initialization data output
from the MKV extractor, so this is highly likely ot be the
right thing to do.
Issue: #6397
PiperOrigin-RevId: 268244365
Sniffing is performed in ProgressiveMediaPeriod even if a single
extractor is provided. Skip it in that case to improve performances.
Issue:#6325
PiperOrigin-RevId: 266766373
The last selection criteria is the audio bitrate to prefer higher-quality
streams. We shouldn't apply this criterium though if the languages of the
tracks are different.
Issue:#6335
PiperOrigin-RevId: 265064756
The current max video buffer is 13MB which is too small for high quality
streams and doesn't allow the DefaultLoadControl to buffer up to its default
max buffer time of 50 seconds.
Also move util method and constants only used by DefaultLoadControl into this
class.
PiperOrigin-RevId: 263328088
We already allow mixed mime type and mixed sample rate adaptation on request,
so for completeness, we can also allow mixed channel count adaptation.
Issue:#6257
PiperOrigin-RevId: 261930046
If we keep streams in chunk sources after selecting new tracks, we also keep
a reference to a stale disabled TrackSelection object. Fix this by updating
the TrackSelection object when keeping the stream. The static part of the
selection (i.e. the subset of selected tracks) stays the same in all cases.
Issue:#6256
PiperOrigin-RevId: 261696082
A previous change switched to calculation of the bitrate based on the
first MPEG audio header in the stream. This had the effect of fixing
seeking to be consistent with playing from the start for streams where
every frame has the same padding value, but broke streams where the
encoder (correctly) modifies the padding value to match the declared
bitrate in the header.
Issue: #6238
PiperOrigin-RevId: 261163904
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
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
