SubtitleExtractor is a component that extracts subtitle data taken from
ExtractorInput into samples. Samples are pushed into an ExtractorOutput
(usually SampleQueue). As a temporary solution SubtitleExtractor uses
SubtitleDecoder to extract Cues from input data.
PiperOrigin-RevId: 390319875
The prototype is built upon Transformer and took many references from
TransformerAudioRenderer.
Please take a look and we can discuss more details.
PiperOrigin-RevId: 390192487
The result is plumbed back to `MediaCodecRenderer` via a new
`DrmSession#requiresSecureDecoder` method.
This allows us to use the `MediaDrm#requiresSecureDecoder` method added
in Android 12:
https://developer.android.com/reference/android/media/MediaDrm#requiresSecureDecoder(java.lang.String)
This change also removes
`FrameworkMediaCrypto#forceAllowInsecureDecoderComponents`, replacing it
with equivalent logic in `FrameworkMediaDrm#requiresSecureDecoder`.
PiperOrigin-RevId: 389616038
Adding a CHANGE_FRAME_RATE_STRATEGY_ALWAYS strategy is
omitted from this commit, since adding it is more complicated
than just plumbing it through and leaving everything else
unchanged. Specifically, VideoFrameReleaseTimeHelper would
need updating to behave differently when such a strategy is
enabled. It currently calls setFrameRate in cases such as
pausing, seeking and re-buffering, on the assumption that
changes to the underlying display refresh rate will only be
made if they can be done seamlessly. For a mode in which
this will not be the case, it makes more sense to stick to
the content frame-rate when these events occur. It may also
make sense to only use explicit content frame-rate values,
and not those inferred from individual frame timestamps.
Finally, for adaptive content containing a mix of frame-rates,
it makes sense to use the maximal frame-rate across all
variants, and to avoid calling setFrameRate on switches from
one variant to another.
Applications that know the frame-rate of their content can
set ExoPlayer's strategy to CHANGE_FRAME_RATE_STRATEGY_OFF and
then use setFrameRate directly on the output surface. Note that
this is likely to be a better option for apps than anything we
could implement in ExoPlayer, because the application layer
most likely knows the frame-rate of the content earlier than
ExoPlayer does (e.g., to perform the disruptive mode switch
at the same time as an activity transition).
Adding CHANGE_FRAME_RATE_STRATEGY_ALWAYS will be deferred
until there's clear demand for it. In the meantime, we'll
recommend the alternative approach above.
PiperOrigin-RevId: 389610965
This CL moves SubtitleDecoder and all its dependencies
to common in order to enable using it in extractor
module while implementing SubtitleExtractor.
PiperOrigin-RevId: 388979021
This CL introduces two classes:
* CueEncoder - encodes list of Cue object into byte array.
* CueDecoder - decodes byte array into list of Cue objects.
This two classes are necessary in order to push Cues through SampleQueue. This classes are meant to be used by subtitle Extractor.
PiperOrigin-RevId: 388932088
These API levels have both been finalized. We're also calling methods
from these API levels directly, which may not exist if a device is
running a non-finalized R or S release.
PiperOrigin-RevId: 388903410
Issue: #9254
#minor-release
We used to allow only alphanumerical characters in session id. The spec also
allows "$", "-", "_", ".", "+" (RFC2326 Sections 3.4 and 15.1).
PiperOrigin-RevId: 388873742
This change removes ERROR_CODE_IO_NETWORK_UNAVAILABLE,
ERROR_CODE_IO_NETWORK_CONNECTION_CLOSED, and ERROR_CODE_IO_DNS_FAILED
in favor of keeping only ERROR_CODE_IO_NETWORK_CONNECTION_FAILED.
PiperOrigin-RevId: 388715972
- Fix use of getTimestampOffsetUs in TsExtractor where
getFirstSampleTimestampUs should have been used.
- Don't reset TimestampAdjuster if it's in no-offset mode.
- Improve comment clarity
#minor-release
PiperOrigin-RevId: 388682711
For audio-only playlists, when formats are communicated to the app with
AnalyticsListener.onDownstreamFormatChanged(), the passed MediaLoadData
do not indicate this is an audio track and therefore the
PlaybackStatsListener cannot derive audio format-related information.
This change sets the main SampleStreamWrappers track type to AUDIO, if
the master playlist contains only audio variants.
Issue: #9175
#minor-release
PiperOrigin-RevId: 388676060
The AnalyticsCollector releases listeners lazily so that listener
callbacks triggered on the application looper after
SimpleExoPlayer.release() are still handled. The change in ListenerSet
to post the onEvents callback on the front of the application looper
changed (correctly) how onEvents are propagated, however this made
the AnalyticsCollector deliver onEvents with out-of-order EventTimes.
This change fixes AnalyticsCollector to trigger onPlayerReleased() and
the matching onEvents() event in the correct order.
#minor-release
PiperOrigin-RevId: 388668739
This change aligns all the names for classes that are 'holders of static
methods' to be `ApiNN`. Classes that hold state are named meaningfully
based on that state.
PiperOrigin-RevId: 388641064
This CL addresses the github issue [#8946](https://github.com/google/ExoPlayer/issues/8964). That issue requests support for `font-size` CSS property in WebVTT subtitle format. This CL:
* Adds support for `font-size` property by extending capabilities of WebVTT `CssParser`. Implementation of `font-size` property value parsing is based on the one in `TtmlDecoder`.
* Adds unit test along with test file containing WebVTT subtitles with all currently supported `font-size` units.
#minor-release
PiperOrigin-RevId: 388423859
