DASH periods don't have to start at the beginning of a segment. In
these cases, they should report an initial discontinuity to let the
player know it needs to expect preroll data (e.g. to flush renderers)
This information is only available in the ChunkSampleStream after
loading the initialization data, so we need to check the sample
streams and tell them to only report discontinuities at the very
beginning of playback. All other position resets are triggered by
the player itself and don't need this method.
Issue: androidx/media#1440
PiperOrigin-RevId: 668831563
This is only used as part of legacy subtitle decoding. If any apps are
using it directly (rather than via `DashMediaSource` or `SsMediaSource`)
they probably need to enable legacy decoding in `TextRenderer` to avoid
playback failures.
PiperOrigin-RevId: 663740343
MediaCodecRenderer might not be able to determine whether a sample
is last in time. Do not use decoder input skipping optimization
for buffers close to media end duration in order to ensure
last frame is rendered.
PiperOrigin-RevId: 651757814
In order for DASH playback to benefit from
FLAG_READ_WITHIN_GOP_SAMPLE_DEPENDENCIES, the fMP4 extractor flag
must be set. The smallest API change that allows this is to add an
experimental method to BundledChunkExtractor.
Add a dash end-to-end test to verify that video frames are skipped at
decoder input.
PiperOrigin-RevId: 651046676
This is a fix for the fix in 319854d624. The original fix did
not reset the firstPeriodId to avoid any id clashes with future
updates. This however only works under the assumption that the
next manifest load at the next call to prepare() is exactly the
same as the current manifest. This is not true unless the call
happens very quickly (and may fail even then). Instead we should
keep the existing manifest directly as a reference so we can use
it to find the number of removed periods when we get a new manifest
at the next call to prepare().
Issue: androidx/media#1329
PiperOrigin-RevId: 634853524
This should be no-op overall and helps to disentangle the clock sync
update from the state of the manifest.
We currently check oldPeriodCount==0 to trigger the clock sync load,
which only works because the manifest happens to be null whenever
we need a new clock sync. We can decouple these concepts by directly
checking whether we have an existing elapsedRealtimeOffsetMs.
This also requires to set this value explicitly at the point where we
consider it set to the local device clock fallback when the timing
element load fails.
PiperOrigin-RevId: 634844921
To override this change, and go back to parsing during rendering,
apps must make two method calls:
1. `MediaSource.Factory.experimentalParseSubtitlesDuringExtraction(false)`
2. `TextRenderer.experimentalSetLegacyDecodingEnabled(true)`
PiperOrigin-RevId: 634262798
https://truth.dev/faq#java8
Also use this change to remove most test usages of
`Lists.transform(...)` and replace them with `.stream().map(...)`.
PiperOrigin-RevId: 633523904
`Uri.appendQueryParameter` is documented to encode its arguments, so
calling `Uri.encode` beforehand results in double-encoding.
Issue: androidx/media#1075
#minor-release
PiperOrigin-RevId: 604995441
Relax the regex to only check for hyphen which is required by the specification.
Issue: androidx/media#1028
#minor-release
PiperOrigin-RevId: 604719300
Many usages are needed to support other deprecations and some
can be replaced by the recommended direct alternative.
Also replace links to deprecated/redirected dev site
PiperOrigin-RevId: 601795998
DASH: `DashMediaSource.Factory` would only propagate it to `DashChunkSource.Factory` -> `BundledChunkExtractor.Factory`
SS: `SSMediaSource.Factory` -> `SsChunkSource.Factory`
HLS: `HlsMediaSource.Factory` -> `HlsExtractorFactory`
Remove nullability of SubtitleParser.Factory across the stack
#minor-release
PiperOrigin-RevId: 601250013
The `SubtitleParser.Factory` is no longer @Nullable and the experimenting toggle is used to enable/disable the use of this factory for subtitle parsing during extraction.
The three places that will hold the "truth" for the `SubtitleParser.Factory` are: BundledChunkExtractor.Factory, SsChunkSource.Factory, DefaultHlsExtractorFactory
DASH: `DashMediaSource.Factory` would only propagate it to `DashChunkSource.Factory` -> `BundledChunkExtractor.Factory`
SS: `SSMediaSource.Factory` -> `SsChunkSource.Factory`
HLS: `HlsMediaSource.Factory` -> `HlsExtractorFactory`
#minor-release
PiperOrigin-RevId: 601151615
Those classes only needed to have access to a `SubtitleParser.Factory` to get a potentially updated `Format` for TrackGroups. The `SubtitleParser.Factory` was only used to check the support for the `mimeType` and getting some cue-related behaviour.
This introduced complexity in a way that both Periods and Extractors needed to have the same `SubtitleParser.Factory` in their individual stacks. To ensure that the sample queue would get the same transcoded/original format.
Instead, now we expose `getOutputTextFormat` methods on `ChunkExtractor.Factory`, `SsChunkSource.Factory` and `HlsExtractorFactory`. Those are the dependencies that Hls/Ss/DashMediaPeriod can make use of to delegate the format-updating logic to.
#minor-release
PiperOrigin-RevId: 601130714
This is similar to the HLS fix in 770ca66fbc
Similar to HLS, the original problem here was **not** modifying the
`Format` for caption tracks
embedded into the video stream. I tried just updating the format in
both places, but that caused new failures because the new
('transcoded') format was then fed into `FragmentedMp4Extractor` as
part of `closedCaptionFormats`, which resulted in the CEA-608 data
being emitted from `FragmentedMp4Extractor` with the incorrect
`application/x-media3-cues` MIME type (but the bytes were actually
CEA-608), meaning the transcoding wrapper passed it through without
transcoding and decoding failed (because obviously CEA-608 bytes can't
be decoded by `CueDecoder` which is expecting a `Bundle` from
`CuesWithTiming.toBundle`.
To resolve this we keep track of the 'original' caption formats inside
`TrackGroupInfo`, so we can feed them into `FragmentedMp4Extractor`.
For all other usages in `DashMediaPeriod` we use the 'transcoded'
caption formats.
PiperOrigin-RevId: 592866262
This was generated by combining the existing `ts/bbb_2500ms.ts` test
asset and a temporary `.srt` file using
https://cloud.google.com/transcoder/docs/how-to/captions-and-subtitles
This doesn't directly reproduce the problem fixed by
7ca26f898d,
because the CEA-608 subs are structured differently to the stream I
discovered the problem with (from Issue: androidx/media#887). However this test
does fail if that fix is reverted after
486230fbd7.
I'm also not able to repro the character duplication reported in
Issue: androidx/media#887 by just changing the manifest in this CL. I'm not yet
sure on the exact differences between the stream provided on GitHub
and this stream.
This stream does provide some regression protection, because it
currently fails with 'new' subtitle parsing
(`DashMediaSource.Factory.experimentalParseSubtitlesDuringExtraction(true)`),
though I'm not sure on the exact reason for that yet.
PiperOrigin-RevId: 592476328
The number of empty image byte arrays written is one less than the
total number of tiles in the image. The empty byte arrays act as
placeholders for individual tiles inside ImageRenderer.
PiperOrigin-RevId: 591231432
When track is changed during playback, `playbackPositionUs` may be in middle of a chunk and `loadPositionUs` should be the start of that chunk. In this situation `loadPositionUs` can be less than the current `playbackPositionUs`, resulting into negative `bufferedDurationUs`. It translates to having no buffer and hence we should send `0` for `bufferedDurationUs` when creating new instances of `CmcdData.Factory`.
Issue: androidx/media#888
#minor-release
PiperOrigin-RevId: 591099785
Unfortunately we can't fail any more obviously at this point, because
manifests often contain config for multiple DRM schemes, and when
parsing the manifest we don't know which scheme is going to be used for
playback. It would be unreasonable to fail playback due to incomplete
ClearKey config if playback was otherwise going to succeed using e.g.
Widevine.
* Issue: androidx/media#777
* Issue: androidx/media#563
* Issue: google/ExoPlayer#9169
#minor-release
PiperOrigin-RevId: 578491484
This change applies to standalone WebVTT files linked directly from the manifest.
Since DASH only supports stand-alone IMSC1 (TTML) and WebVTT text files, this change concludes the support extension of text-based subtitle files to be parse during extraction.
PiperOrigin-RevId: 577468830
This change applies to standalone TTML files linked directly from the manifest.
As a result, we no longer have the flakiness in the DashPlaybackTest which uses sidecar-loaded (standalone file) TTML subtitles. We experimentally opt into parsing subtitles during extraction and use SubtitleExtractor in hybrid mode.
PiperOrigin-RevId: 577457256
This currently only applies to subtitles muxed into mp4 segments, and
not standalone text files linked directly from the manifest.
Issue: androidx/media#288
#minor-release
PiperOrigin-RevId: 572263764
The test is hidden behind the Ignore annotation due to some flakiness just like `webvttInMp4`. However, it will be removed when the subtitle parsing is moved to a pre-sample-queue architecture.
#minor-release
PiperOrigin-RevId: 570376275
