v1.8.0

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This release includes the following changes since the
1.7.1 release:

• Common Library:
  • Add support for replacing the player in ForwardingSimpleBasePlayer.
• ExoPlayer:
  • Add getter for shuffle mode to the ExoPlayer interface
    (#​2522).
  • More clearly throw an exception if DefaultAudioSink is accessed from
    multiple threads. If this happens due to a call to
    RendererCapabilities.getFormatSupport outside of the player, make sure
    to call this method on the same thread as ExoPlayer's playback thread or
    use a different instance than the one used for playback
    (#​1191).
  • Fix bug where non-stereo audio formats on TVs may be marked as
    unsupported by DefaultTrackSelector.
  • Ensure the last frame is correctly rendered when using MediaCodec's
    DECODE_ONLY flag (which is enabled by default in scrubbing mode).
  • Add support for using the virtual device ID from the Context passed to
    ExoPlayer.Builder.
  • Enable dynamic scheduling by default in scrubbing mode.
  • Avoid unnecessary reload of a source when seeking to the end of an item.
  • Use MediaCodec.BUFFER_FLAG_DECODE_ONLY by default in scrubbing mode.
  • Throw IllegalStateException when PreloadMediaSource is played by an
    ExoPlayer with a playback thread that is different than the preload
    thread (#​2495).
  • Add cloneAndMove to ShuffleMode with a default implementation
    (#​2226).
  • Change default behavior of Renderer.getMinDurationToProgressUs to
    return a larger value if no call to render is required.
  • Fix bug where internal scheduling delayed last frame when seeking to the
    end while paused. For now, the bug fix only takes effect if
    ExoPlayer.Builder.experimentalSetDynamicSchedulingEnabled is enabled.
  • Add ExoPlayer.setScrubbingModeEnabled(boolean) method. This optimizes
    the player for many frequent seeks (for example, from a user dragging a
    scrubber bar around). The behavior of scrubbing mode can be customized
    with setScrubbingModeParameters(..) on ExoPlayer and
    ExoPlayer.Builder.
  • Allow customizing fractional seek tolerance in scrubbing mode.
  • Increase codec operating rate in scrubbing mode.
  • Fix bug where prepare errors in the content of AdsMediaSource may be
    never reported (#​2337).
  • Fix memory leak in MergingMediaSource, for example used when
    sideloading subtitles
    (#​2338).
  • Allow CmcdConfiguration.Factory to return null to disable CMCD
    logging for specific media items
    (#​2386).
  • Increase default image buffer size from 128kB (copy-paste mistake from
    text tracks) to 26MB, which is large enough for 50MP Ultra HDR images
    (#​2417).
  • Add PreCacheHelper that allows apps to pre-cache a single media with
    specified start position and duration.
  • Add support of preloading from specified position in
    DefaultPreloadManager.
• Transformer:
  • Add CodecDbLite that enables chipset specific optimizations of video
    encoding settings.
  • Add setEnableCodecDbLite flag to the DefaultEncoderFactory to enable
    CodecDB Lite settings optimization. By default, this flag is set to
    false.
  • Filling an initial gap (added via addGap()) with silent audio now
    requires explicitly setting experimentalSetForceAudioTrack(true) in
    EditedMediaItemSequence.Builder. If the gap is in the middle of the
    sequence, then this flag is not required.
  • Move Muxer interface from media3-transformer to media3-muxer.
  • Make setting MediaItem.Builder().setImageDuration(long) mandatory to
    import a media item as an image.
  • Add
    Transformer.Builder().experimentalSetMp4EditListTrimEnabled(boolean)
    which includes an MP4 edit list when trimming to instruct players to
    ignore samples between the key frame before the trim start point, and
    the trim start point.
  • Update Composition Demo app to use Kotlin and Jetpack Compose, and add a
    custom VideoCompositorSettings to arrange sequences into a 2x2 or PiP
    layout.
• Extractors:
  • Parse metadata from fragmented MP4 files
    (#​2084).
  • JPEG: Support motion photos that don't have an Exif segment at the start
    (#​2552).
  • Add support for seeking in fragmented MP4 with multiple sidx atoms.
    This behavior can be enabled using the FLAG_MERGE_FRAGMENTED_SIDX flag
    on FragmentedMp4Extractor
    (#​9373).
  • Ignore empty seek tables in FLAC files (including those containing only
    placeholder seek points), and fall back to binary search seeking if the
    duration of the file is known
    (#​2327).
  • Fix parsing of H.265 SEI units to fully skip unrecognized SEI types
    (#​2456).
  • Update WavExtractor to use the header extension's SubFormat data for
    the audio format when parsing a WAVE_FORMAT_EXTENSIBLE type file.
  • MP4: Add support for ipcm and fpcm boxes defining raw PCM audio
    tracks (64-bit floating point PCM is not supported).
  • MP4: Handle the rotation part of tkhd transformation matrices that
    both rotate and reflect the video. This ensures that reflected videos
    taken by the iPhone front facing camera display the right way up, but
    incorrectly reflected in the y-axis
    (#​2012).
  • MP3: Use duration and data size from unseekable Xing, VBRI and similar
    variable bitrate metadata when falling back to constant bitrate seeking
    due to FLAG_ENABLE_CONSTANT_BITRATE_SEEKING(_ALWAYS)
    (#​2194).
• Audio:
  • Fix bug where AnalyticsListener.onAudioPositionAdvancing is not called
    when the audio playback is started very close to the end of the media.
  • Add support for all linear PCM sample formats in
    ChannelMappingAudioProcessor and TrimmingAudioProcessor.
  • Add support for audio gaps in CompositionPlayer.
  • Remove spurious call to BaseAudioProcessor#flush() from
    BaseAudioProcessor#reset().
  • Allow constant power upmixing/downmixing in DefaultAudioMixer.
  • Make ChannelMappingAudioProcessor, TrimmingAudioProcessor and
    ToFloatPcmAudioProcessor public
    (#​2339).
  • Use AudioTrack#getUnderrunCount() in AudioTrackPositionTracker to
    detect underruns in DefaultAudioSink instead of best-effort
    estimation.
  • Improve audio timestamp smoothing for unexpected position drift from the
    audio output device.
  • Fix bug where A/V sync is broken for the first 10 seconds after resuming
    from pause when connected to Bluetooth devices.
  • Fix bug that AnalyticsListener.onAudioPositionAdvancing was not
    reporting the time when the audio started advancing but the time of the
    first measurement.
  • Fix recovery to multichannel audio after fallback to stereo audio on
    some devices (#​2258).
• Video:
  • Extend detached surface workaround to "lenovo" and "motorola" devices
    (#​2059).
  • Improve smooth video frame release at startup when audio samples don't
    start at exactly the requested position.
  • Extend detached surface workaround to "realme" devices
    (#​2059).
  • Add experimental ExoPlayer API to include the
    MediaCodec.BUFFER_FLAG_DECODE_ONLY flag when queuing decode-only input
    buffers. This flag will signal the decoder to skip the decode-only
    buffers thereby resulting in faster seeking. Enable it with
    DefaultRenderersFactory.experimentalSetEnableMediaCodecBufferDecodeOnlyFlag.
  • Improve codec performance checks for software video codecs. This may
    lead to some additional tracks being marked as EXCEEDS_CAPABILITIES.
  • Fix VP9 Widevine playback errors on some devices
    (#​2408).
• Text:
  • Add support for VobSub tracks in MP4 files
    (#​2510).
  • Fix a playback stall when a subtitle segment initially fails to load and
    later loads successfully, followed by several empty subtitle segments
    (#​2517).
  • Fix SSA and SubRip to display an in-progress cue when enabling subtitles
    (#​2309).
  • Fix playback getting stuck when switching from a stream with a subtitle
    error to a live stream with an empty subtitle track
    (#​2328).
  • Fix garbled CEA-608 subtitles when playing H.262 streams containing
    B-frames (#​2372).
  • Add support for SSA subtitles with CodecId = S_TEXT/SSA in Matroska
    files. Previously MatroskaExtractor only supported CodecId = S_TEXT/ASS which is meant to represent the 'advanced' (v4+) variant of
    SubStation Alpha subtitles (but ExoPlayer's parsing logic is the same
    for both variants)
    (#​2384).
  • Add support for the layer property in SubStation Alpha (SSA) subtitle
    files which is used to define the z-order of cues when more than one is
    shown on screen at the same time
    (#​2124).
• Metadata:
  • Added support for retrieving media duration and Timeline to
    MetadataRetriever and migrated it to an instance-based,
    AutoCloseable API. Use the new Builder to create an instance for a
    MediaItem, then call retrieveTrackGroups(), retrieveTimeline(),
    and retrieveDurationUs() to get ListenableFutures for the metadata.
    The previous static methods are now deprecated
    (#​2462).
• Image:
  • Limit decoded bitmaps to the display size in
    BitmapFactoryImageDecoder, to avoid an app crashing with Canvas: trying to draw too large bitmap. from PlayerView when trying to
    display very large (e.g. 50MP) images.
  • Change the signature of
    DefaultRenderersFactory.getImageDecoderFactory() to take a Context
    parameter.
  • Align the max bitmap output size used in CompositionPlayer with that
    already used in Transformer (meaning CompositionPlayer does not
    consider the display size when decoding bitmaps, unlike ExoPlayer).
• DRM:
  • Add new overload of OfflineLicenseHelper.newWidevineInstance accepting
    a MediaItem.DrmConfiguration so that HTTP request headers can be
    applied correctly
    (#​2169).
• Effect:
  • Add Presentation.createForShortSide(int) that creates a Presentation
    that ensures the shortest side always matches the given value,
    regardless of input orientation.
• Muxers:
  • Fix a bug where correct sample flags were not set for audio samples in
    fragmented MP4.
  • writeSampleData() API now uses muxer specific BufferInfo class
    instead of MediaCodec.BufferInfo.
  • Add Muxer.Factory#supportsWritingNegativeTimestampsInEditList which
    defaults to false.
• IMA extension:
  • Fix a bug where a load error in one ad may accidentally invalidate
    another ad group.
  • Fix bug where ad groups after the end of a VOD window stalled playback.
    Ads groups with a start time after the window are not enqueued into the
    MediaPeriodQueue anymore
    (#​2215).
• Session:
  • Fix bug where connections from third-party non-privileged Media3
    controllers are ignored.
  • Remove check for available commands when sending custom commands to a
    legacy MediaBrowserServiceCompat. This is in parity with the behavior
    of legacy controllers/browsers when connected to a legacy app.
  • Fix a bug that causes a player's first playback error to be incorrectly
    treated as a persistent custom exception. This prevents the application
    from recovering.
  • Fix bug where some controller changes that are not handled by the
    session may cause IllegalStateExceptions.
  • Fix bug where controller actions that are not handled by the session may
    leave the controller in an invalid state.
  • Fix StrictMode unsafe launch violation warning
    (#​2330).
  • Fix bug where calling setSessionExtras from the main thread when
    running the player from a different application thread then the main
    thread caused an IllegalStateException
    (#​2265).
  • Don't automatically show a notification if a player is set up with media
    items without preparing or playing them
    (#​2423https://github.com/androidx/media/issues/2423). This behavior
    is configurable via
    MediaSessionService.setShowNotificationForIdlePlayer.
  • Add custom PlaybackException for all or selected controllers.
  • Fix bug where seeking in a live stream on a MediaController can cause
    an IllegalArgumentException.
  • For live streams, stop publishing a playback position and the ability to
    seek in the current item for platform media controllers, to avoid
    position artefacts in the Android Auto UI (and other controllers using
    this information from the platform media session)
    (#​1758).
  • Fix a bug where passing null into getLibraryRoot of a MediaBrowser
    connected to a legacy MediaBrowserServiceCompat produced a
    NullPointerException.
  • Fix a bug where sending custom actions, a search result or a getItem
    request crashed the legacy session app with a ClassNotFoundException.
  • Fix a bug where MediaItem.LocalConfiguration.uri was shared to the
    platform sessions's MediaMetadata. To intentionally share a URI to
    allow controllers to re-request the media, set
    MediaItem.RequestMetadata.mediaUri instead.
• UI:
  • Fix bug where PlayerSurface inside re-usable components like
    LazyColumn didn't work correctly
    (#​2493).
  • Fix a Compose bug which resulted in a gap between setting the initial
    button states and observing the change in state (e.g. icon shapes or
    being enabled). Any changes made to the Player outside of the
    observation period are now picked up
    (#​2313).
  • Add state holders and composables to the media3-ui-compose module for
    SeekBackButtonState and SeekForwardButtonState.
  • Add support for ExoPlayer's scrubbing mode to PlayerControlView. When
    enabled, this puts the player into scrubbing mode when the user starts
    dragging the scrubber bar, issues a player.seekTo call for every
    movement, and then exits scrubbing mode when the touch is lifted from
    the screen. This integration can be enabled with either
    time_bar_scrubbing_enabled = true in XML or the
    setTimeBarScrubbingEnabled(boolean) method from Java/Kotlin.
  • Make PlayerSurface accept a nullable Player argument.
• Downloads:
  • Add partial download support for progressive streams. Apps can prepare a
    progressive stream with DownloadHelper, and request a
    DownloadRequest from the helper with specifying the time-based media
    start and end positions that the download should cover. The returned
    DownloadRequest carries the resolved byte range, with which a
    ProgressiveDownloader can be created and download the content
    correspondingly.
  • Add DownloadHelper.Factory with which the static
    DownloadHelper.forMediaItem() methods are replaced.
  • Add Factory for SegmentDownloader implementations.
  • Add partial download support for adaptive streams. Apps can prepare an
    adaptive stream with DownloadHelper, and request a DownloadRequest
    from the helper with specifying the time-based media start and end
    positions that the download should cover. The returned DownloadRequest
    carries the resolved time range, with which a concrete
    SegmentDownloader can be created and download the content
    correspondingly.
• Cronet extension:
  • Add automatic cookie handling
    (#​5975).
• HLS extension:
  • Fix bug where HlsSampleStreamWrapper attempts to seek inside buffer
    when there are no chunks available in the buffer
    #​2598.
  • Fix bug where track selection changes after loading low-latency parts
    and preload hints can cause playback to get stuck or freeze
    (#​2299).
  • Prevent excessive reloads by waiting for half the target duration when
    CAN-BLOCK-RELOAD=YES is not honored by the server
    (#​2317).
  • Fix bug where playback was stalled when starting an interstitials stream
    before a mid roll and asset list resolution was attempted for the wrong
    ad (#​2558).
  • Fix playlist parsing to accept \f (form feed) in quoted string
    attribute values
    (#​2420).
  • Support updating interstitials with the same ID
    (#​2427).
  • Fix bug where playlist load errors are sometimes not propagated once a
    live stream runs out of segments to load
    (#​2401https://github.com/androidx/media/issues/2401).
  • Group subtitle renditions by NAME tag, similar to how audio renditions
    are grouped already
    (#​1666).
  • Support X-ASSET-LIST and live streams with HlsInterstitialsAdsLoader.
• DASH extension:
  • Fix issue where trick-play adaptation set is merged with its main
    adaptation set to form an invalid TrackGroup
    (#​2148).
  • Fix bug where shortening a DASH period duration can throw an exception
    when samples beyond the new duration have already been read by the
    rendering pipeline
    (#​2440).
  • Fix bug where redirect wasn't followed when using CMCD query parameters
    (#​2475).
• RTSP extension:
  • Add support for RTP Aggregation Packet for H265 in accordance with RFC
    7798#4.4.2 (#​2413).
  • Fix RtspClient to use the location uri as provided when processing an
    HTTP 302 response
    (#​2398).
  • Add parsing support for SessionDescriptions containing lines with
    trailing whitespace characters
    (#​2357).
• Decoder extensions (FFmpeg, VP9, AV1, etc.):
  • Fix bug where
    DefaultTrackSelector.setAllowInvalidateSelectionsOnRendererCapabilitiesChange
    has no effect for audio decoder extensions
    (#​2258).
• Cast extension:
  • Add support for setVolume(), and getVolume()
    (#​2279).
  • Prevent CastPlayer from entering STATE_BUFFERING while the timeline is
    empty.
  • Add support for getDeviceVolume(), setDeviceVolume(),
    getDeviceMuted(), and setDeviceMuted()
    (#​2089).
• Test Utilities:
  • Add advance(player).untilPositionAtLeast and untilMediaItemIndex to
    TestPlayerRunHelper in order to advance the player until a specified
    position is reached. In most cases, these methods are more reliable than
    the existing untilPosition and untilStartOfMediaItem methods.
  • Move FakeDownloader to test-utils-robolectric module for reuse in
    other tests.
  • Removed transformer.TestUtil.addAudioDecoders(String...),
    transformer.TestUtil.addAudioEncoders(String...), and
    transformer.TestUtil.addAudioEncoders(ShadowMediaCodec.CodecConfig, String...). Use ShadowMediaCodecConfig to configure shadow encoders
    and decoders instead.
  • Replaced the "exotest" prefix with "media3" in codec names reported by
    ShadowMediaCodecConfig.
• Remove deprecated symbols:
  • Removed deprecated SegmentDownloader constructor
    SegmentDownloader(MediaItem, Parser<M>, CacheDataSource.Factory, Executor) and the corresponding constructors in its subclasses
    DashDownloader, HlsDownloader and SsDownloader.
  • Removed deprecated Player.hasNext(), Player.hasNextWindow(). Use
    Player.hasNextMediaItem() instead.
  • Removed deprecated Player.next(). Use Player.seekToNextMediaItem()
    instead.
  • Removed deprecated Player.seekToPreviousWindow(). Use
    Player.seekToPreviousMediaItem() instead.
  • Removed deprecated Player.seekToNextWindow(). Use
    Player.seekToNextMediaItem() instead.
  • Removed deprecated BaseAudioProcessor in exoplayer module. Use
    BaseAudioProcessor under common module.
  • Remove deprecated MediaCodecVideoRenderer constructor
    MediaCodecVideoRenderer(Context, MediaCodecAdapter.Factor, MediaCodecSelector, long, boolean, @​Nullable Handler, @​Nullable VideoRendererEventListener, int, float, @​Nullable VideoSinkProvider).