Create MediaSource from FileDescriptor

[jmgirven]

I have an Android box which allows a HDMI input. I have been given some code that grabs the data stream from the HDMI input and writes an MPEG TS stream to a FileDescriptor. I wondered if I could pass this FileDescriptor into ExoPlayer as a MediaSource for playback? I couldn't see a way to do that in the current API. Old questions reference a FrameworkSampleSource that seems long since removed.

[jmgirven]

Sorry to bug you guys, but I wondered if you had any idea on this?

[AquilesCanta]

Since the content is TransportStream, the media source will be an ExtractorMediaSource. Your issue is going to be the DataSource which you pass to the media source.

As far as I know, there is no way to create a DataSource from a FileDescriptor directly. However, you might be able to emulate what the AssetDataSource does, which uses an InputStream to read the assets' data. So, you could create a FileInputStream and use that in a similar way to create a FileDescriptorDataSource (or equivalent). Note: we already count with a FileDataSource, but it uses a RandomAccessFile. I don't know whether synchronization is going to be an issue for you. Or maybe there is a simpler solution, but it is not possible to know with the provided information. Let us know if you manage to give it a try.

[rraallvv]

I have a similar use case, I have the file contents (only MP3 and MP4) in a non-seekable InputStream extracted on-the-fly from a compressed container. Has anyone managed to create a custom AssetDataSource-like wrapper for the InputStream?