The method allows extractors to set track duration when available. The `default` implementation does nothing, allowing implementers of `TrackOutput` to override it if they need to handle track duration.
Implemented it in `FakeExtractor` to print track duration in dump files.
PiperOrigin-RevId: 688110288
Treats the media duration as unknown (`C.TIME_UNSET`) when all bytes are `-1` to prevent exceptions during playback.
Issue: androidx/media#1819
#cherrypick
PiperOrigin-RevId: 688103949
This allows users to extend and customize specific methods of the `TrackOutput` implementation while inheriting default behaviors for others.
PiperOrigin-RevId: 686454360
Updated logic to walk forward in the timestamps array to include all frames within the valid edit duration, accounting for out-of-order frames. This ensures that no frames with timestamps less than `editMediaTime` + `editDuration` are incorrectly excluded.
Issue: androidx/media#1797
PiperOrigin-RevId: 686075680
This was missed in da724c8cc4
I tried to write a test for this, but got stuck crafting valid test
data. I was able to create a new fragmented MP4 file containing only a
TTML track:
```shell
$ MP4Box -add simple.ttml -frag 2000 sample_fragmented_ttml.mp4
```
Then I tried naively removing the `ftyp` and `moov` boxes with a hex
editor, but using this in `FragmentedMp4ExtractorNoSniffingTest` gave
me an `EOFException` that I didn't get to the root cause of.
Issue: androidx/media#1779
#cherrypick
PiperOrigin-RevId: 683667850
This change is a no-op, because
`SubtitleTranscodingExtractorOutput.seekMap` forwards directly to the
delegate implementation, but it seems clearer to always use the
wrapper.
Also remove a no-op assignment in `MatroskaExtractor`.
This is a follow-up to Issue: androidx/media#1779 where I manually checked every
implementation of `Extractor.init` for a similar mistake.
#cherrypick
PiperOrigin-RevId: 683607090
- Added logic to parse media duration from the `mdhd` box for accurate frame rate calculation.
- Fallbacks to track duration from `tkhd` when `mdhd` contains invalid or missing data.
- Avoids incorrect frame rate calculations in MP4 files with an edit list (`elst`) box.
- Adds frame rate calculations for partially fragmented MP4 files.
- Verified accuracy with tools like `mediainfo` and `ffprobe`.
Issue: androidx/media#1531
**Note**: The slight difference in frame rate values in dump files that aren’t MP4s with an edit list or fragmented MP4s isn’t due to differences in `tkhd` and `mdhd` duration values (which should be identical for non-edited or non-fragmented files). Rather, it’s because they are calculated using different timescales. The `mvhd` box defines a global movie timescale, which is used for the track's `tkhd` duration. Meanwhile, each track’s `mdhd` box defines its own timescale specific to its content type, which we now use for more accurate frame rate calculation.
PiperOrigin-RevId: 676046744
When processing edit lists in MP4 files, the media start position may be a non-keyframe. To ensure proper playback, the decoder must preroll to the preceding keyframe, as these preroll samples are essential for decoding but are not rendered.
Issue: google/ExoPlayer#1659
#cherrypick
PiperOrigin-RevId: 673457615
The `bear-cbr-no-seek-table-trailing-garbage.mp3` test file was generated by appending 150kB of `0xDEADBEEF` onto the end of `bear-cbr-variable-frame-size-no-seek-table.mp3`.
Issue: androidx/media#1563
#cherrypick
PiperOrigin-RevId: 670131828
This allows seek operations in files that were previously unseekable, particularly those with variable bitrate (VBR) or constant bitrate (CBR) with silence frames.
New samples for tests were created by adding silence frames to existing narrowband and wideband versions.
PiperOrigin-RevId: 665349241
This makes the class available to custom MP4-parsing implementations,
while also allowing it to be used by `muxer` in future.
'Box' is the term used throughout the ISO 14496-12 spec, while the
'Atom' nomenclature was used in an earlier form of the spec
(Quicktime).
This change moves it from `extractor.mp4.Atom` to `container.Mp4Box`,
to be consistent with existing MP4-specific types in the `container`
module like `Mp4TimestampData`.
PiperOrigin-RevId: 663274752
AMR samples with identical data but different names, previously used to generate uniquely named dump files, have been deleted. Instead, `AssertionConfig` is now used to set the dump file prefix, ensuring files are generated with unique names.
PiperOrigin-RevId: 662883541
Constant bit rate (CBR) seeking can be enabled even when the length of the file is not known.
Additionally, dump files for these files have been updated to accurately log the `position` when `timeUs` is set to `0`.
PiperOrigin-RevId: 662868607
This is groundwork to moving `Atom` to the `container` library, which
we want to do before making it public (so it can be used by `muxer` in
future).
PiperOrigin-RevId: 662453520
If the length of the `ExtractorInput` is not known then the
`subtitleData` field is re-sized by 1kB each time
(`SubtitleExtractor.DEFAULT_BUFFER_SIZE`), so the end of the array is
often not populated. This change ensures that `length` is propagated to
`SubtitleParser`, so that implementations don't try and parse the
garbage/zero bytes at the end of the array.
Discovered while investigating Issue: androidx/media#1516
#cherrypick
PiperOrigin-RevId: 661195634
This is caused when the requested "output start time" is equal to or
larger than the last event time in a `Subtitle` object.
This resolves the error in Issue: androidx/media#1516, but subtitles are still not
renderered (probably because the timestamps aren't what we expect
somewhere, but I need to investigate this part further).
#cherrypick
PiperOrigin-RevId: 660462720
This is needed to correctly handle files with trailing non-MP3 data
(which is indicated by the length in the `Info` frame being shorter than
the overall length of the file).
The test file was generated by appending 150kB of `DEADBEEF` onto the
end of `test-cbr-info-header.mp3`, and the test asserts that the
extracted samples are identical.
Issue: androidx/media#1480
#cherrypick
PiperOrigin-RevId: 658727595
Also promote all H.265 constants to be public in `NalUnitUtil` with
`H265_` prefixes, for consistency.
A lot of these names are used in h.265 too (and `NalUnitUtil` handles
both), but with different values, so this rename aims to avoid
accidentally using an h.264 value in an h.265 context.
PiperOrigin-RevId: 651774188
The integration with `SubtitleTranscodingExtractorOutput` has been
moved inside the relevant `Extractor` implementations instead.
PiperOrigin-RevId: 651213564
Stereo view information is stored in the 3D reference displays information SEI and the optional vexu box. Parsing of the SEI and vexu box is added, and based on the parsed info, proper mapping of primary/secondary view to left/right eye is determined.
PiperOrigin-RevId: 651002190
During a seek, or when playing a media with clipped start,
MCVR encounters preroll decode-only buffers that are not rendered.
Use C.BUFFER_FLAG_NO_OTHER_SAMPLE_DEPENDS_ON_THIS to determine
whether a decode-only buffer is unused as reference.
These buffers can be dropped before the decoder.
When this optimization is triggered, increment
decoderCounters.skippedInputBufferCount.
Tested in ExoPlayer demo app on "One hour frame counter (MP4)"
after enabling extractorsFactory.setMp4ExtractorFlags(
FLAG_READ_WITHIN_GOP_SAMPLE_DEPENDENCIES);
Observe: "sib" increases on each seek.
PiperOrigin-RevId: 650566216
Changes to FragmentedMp4Extractor to parse additional sample dependency
information and mark output samples as "no other samples depend on this".
Only applies to H.264 tracks.
Controlled by new fMP4 flag: FLAG_READ_WITHIN_GOP_SAMPLE_DEPENDENCIES
PiperOrigin-RevId: 650538377
Leb128 is a little-endian long of variable byte length. The format is used during the extraction of the size of the OBU configuration for the iacb configuration box.
PiperOrigin-RevId: 650295002
Changes to Mp4Extractor to parse additional sample dependency information
and mark output samples as "no other sample depend on this".
Only applies to H.264 tracks.
Controlled by new mp4 flag: FLAG_READ_WITHIN_GOP_SAMPLE_DEPENDENCIES
PiperOrigin-RevId: 649640184
The percentage should be interpreted as relative to the size of a parent
node.
This change makes this inheritance work correctly for percentages in
both the parent and child. It does not fix the case of a non-percentage
parent size with a percentage child size.
PiperOrigin-RevId: 649631055
Parse LHEVCDecoderConfigurationRecord with the ‘lhvC’ type and set the corresponding sample mime type to video/mv-hevc. With no MV-HEVC decoder available, fallback to single-layer HEVC decoding.
PiperOrigin-RevId: 649119173
This is required before we can move CEA-6/708 parsing from the rendering
side of the sample queue to the extraction side.
This re-ordering is needed for video encodings with different decoder
and presentation orders, because the CEA-6/708 data is attached to each
frame and needs to be processed in presentation order instead of decode
order. This change re-orders frames within a group-of-pictures, but also
takes advantage of `maxNumReorderFrames/Pics` values to cap the size of
the re-ordering queue, allowing caption data to be released 'earlier'
than the end of a GoP.
Annex D of the CEA-708 spec (which also applies for CEA-608 embedded in
SEI messages), makes the need to re-order from decode to presentation
order clear.
PiperOrigin-RevId: 648648002
Add the following NAL unit parsing utility functions that will be needed for the MV-HEVC support as proposed in Apple's HEVC stereo video interoperability profile:
- NAL unit header parsing to get the layer information needed for MV-HEVC support.
- VPS parsing, including vps_extension() needed for MV-HEVC support.
- SPS parsing modifications to support MV-HEVC.
PiperOrigin-RevId: 647329211
This value is used in a follow-up change to re-order SEI messages
containing CEA-6/708 data from decode order to presentation order.
PiperOrigin-RevId: 643296338
This is currently set from `Mp3Extractor.synchronizedHeader` which
gets overwritten every time we read a new frame. It seems safer to make
this defensive copy (and there will be at most one `XingFrame` instance
per-playback, so this is not prohibitively expensive).
PiperOrigin-RevId: 636181038
`Info` header is used for CBR files, but in some cases not **every**
frame in these files is the same size. This change stops using the
single frame after the `Info` frame as the 'template' (and assuming all
subsequent frames are the same size/bitrate), and instead derives the
bitrate from fields in the `Info` header. This works for files which are
'almost' constant bitrate, like the one in Issue: androidx/media#1376 where every
frame is either 1044 or 1045 bytes except the one immediately after the
`Info` frame which is 104 bytes (32kbps), resulting in a wildly
incorrect duration calculation.
PiperOrigin-RevId: 636151605
This change was originally made in 379cb3ba54.
It was then accidentally lost in when `Cea608Parser` was merged back
into `Cea608Decoder` in 25498b151b.
This was spotted when re-doing a similar lost change to `Cea708Decoder`,
reported in https://github.com/androidx/media/pull/1315.
See reasoning on e2847b3b80
about why this is the only 'lost' CEA-608 change.
PiperOrigin-RevId: 635803536
This change was originally made in 6f8249184b
It was then accidentally lost in when `Cea708Parser` was merged back
into `Cea708Decoder` in 51b4fa2cc8.
This is the only change made to the actual 'decoding' logic in
`Cea708Parser` between it being split from `Cea708Decoder` and merged
back in again, all the other changes in this period relate to the
implementation of the `SubtitleParser` interface, so don't need to be
preserved in `Cea708Decoder`:
51b4fa2cc8/libraries/extractor/src/main/java/androidx/media3/extractor/text/cea/Cea708Parser.java
`Cea608Parser` was also merged back into `Cea608Decoder` in
25498b151b
and so is vulnerable to the same risk of accidental loss of changes. To
be sure, I also checked the history of this file:
25498b151b/libraries/extractor/src/main/java/androidx/media3/extractor/text/cea/Cea608Parser.java
The only 'decoding logic' change there is 379cb3ba54,
which was also lost in 25498b151b.
I will send a separate change to resolve this.
PiperOrigin-RevId: 635796696
This shows ExoPlayer currently wrongly reports the duration of this
sample, because it assumes every frame is 32kbps (104 bytes) due to the
`PCUT` frame immediately after the `Info` frame.
A follow-up change will modify `Info` frame handling to resolve this
issue.
This sample was crafted using a hex editor to insert the additional
`PCUT` frame (the pattern of `null` and `x` is taken from the sample
file in Issue: androidx/media#1376, the header is modified to set the channel count
to 1 to match the rest of the file), and then update the frame count
and data size of the `Info` header to match.
Issue: androidx/media#1376
PiperOrigin-RevId: 635772837
Fix "subtitles rendered with border and no fill color" problem:
https://github.com/moneytoo/Player/issues/413
because '0' means it's an index to the palette table, not an RGBA value of 0
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
This annotation is only needed on public classes.
This change also removes the `/* package */` comment from some `public`
classes.
PiperOrigin-RevId: 633864544
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
These subtitles were skipped because they are marked as shouldBeSkipped
based on their timestamps. The fix removes this flag entirely in
SimpleSubtitleDecoder because TextRenderer handles potential skipping
if needed.
PiperOrigin-RevId: 629717970
