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media/extensions/ima
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bachinger 60f907be6d Make FakeTimeline and FakeMediaSource provide a media item 
FakeMediaSource and FakeTimeline should put a media item to the window just as other media sources and timelines do. This change provides a fake media item for both of them.

Further the MaskingMediaSource needs to provide a media item for when the real timeline of the masked media source is not available. This can be easily done by using mediaSource.getMediaItem() once available. For now a dummy is used to make ExoPlayerTest run green. This can be easily change to use mediaSource.getMediaSource as soon as this method is defined by the MediaSource interface.

PiperOrigin-RevId: 314897474
2020-06-05 13:05:48 +01:00
..
src Make FakeTimeline and FakeMediaSource provide a media item 2020-06-05 13:05:48 +01:00
build.gradle Enable multidex for demos 2020-05-27 18:59:43 +01:00
proguard-rules.txt Automated g4 rollback of changelist 184056034. 2018-02-01 15:13:51 +00:00
README.md Add an overview of ad insertion 2020-02-13 15:45:30 +00:00

README.md

ExoPlayer IMA extension

The IMA extension is an AdsLoader implementation wrapping the Interactive Media Ads SDK for Android. You can use it to insert ads alongside content.

Getting the extension

The easiest way to use the extension is to add it as a gradle dependency:

implementation 'com.google.android.exoplayer:extension-ima:2.X.X'

where 2.X.X is the version, which must match the version of the ExoPlayer library being used.

Alternatively, you can clone the ExoPlayer repository and depend on the module locally. Instructions for doing this can be found in ExoPlayer's top level README.

Using the extension

To play ads alongside a single-window content MediaSource, prepare the player with an AdsMediaSource constructed using an ImaAdsLoader, the content MediaSource and an overlay ViewGroup on top of the player. Pass an ad tag URI from your ad campaign when creating the ImaAdsLoader. The IMA documentation includes some sample ad tags for testing. Note that the IMA extension only supports players which are accessed on the application's main thread.

Resuming the player after entering the background requires some special handling when playing ads. The player and its media source are released on entering the background, and are recreated when the player returns to the foreground. When playing ads it is necessary to persist ad playback state while in the background by keeping a reference to the ImaAdsLoader. Reuse it when resuming playback of the same content/ads by passing it in when constructing the new AdsMediaSource. It is also important to persist the player position when entering the background by storing the value of player.getContentPosition(). On returning to the foreground, seek to that position before preparing the new player instance. Finally, it is important to call ImaAdsLoader.release() when playback of the content/ads has finished and will not be resumed.

You can try the IMA extension in the ExoPlayer demo app. To do this you must select and build one of the withExtensions build variants of the demo app in Android Studio. You can find IMA test content in the "IMA sample ad tags" section of the app. The demo app's PlayerActivity also shows how to persist the ImaAdsLoader instance and the player position when backgrounded during ad playback.

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