DASH DTS Digital Surround Passthrough Fails in recent Exoplayer Versions.

[cedricxperi]

ExoPlayer Version

2.17.1

Devices that reproduce the issue

Nvidia Shield TV Pro

Devices that do not reproduce the issue

None

Reproducible in the demo app?

Yes

Reproduction steps

Playback a DASH DTS Digital Surround audio stream on Nvidia Shield TV Pro (connected to an AVR via HDMI) running v2.17.1 Exoplayer demo app.
The DTS bitstream should be passthrough to the AVR for decoding. This works in earlier versions of Exoplayer, E.g. v2.11.8. In v2.17.1 the playback stops with a warning message, "Media includes audio tracks, but none are playable by this device".

Solution: To fix this issue, add the following to DashManifestParser.parseAudioChannelConfiguration()

  case "urn:dts:dash:audio_channel_configuration:2012":
  case "tag:dts.com,2014:dash:audio_channel_configuration:2012":
  case "tag:dts.com,2018:uhd:audio_channel_configuration":
    audioChannels = parseDtsChannelConfiguration(xpp);
    break;

These are defined in DASH-IF guidelines: https://dashif.org/docs/Audio%20Amendment%20to%20DASH%20IOP%204.3.pdf

Expected result

The DTS bitstream should be passthrough to the AVR for decoding.

Actual result

Playback stops with a warning message, "Media includes audio tracks, but none are playable by this device"

Media

Test media and code for parseDtsChannelConfiguration(xpp) will be emailed to dev.exoplayer@gmail.com

Bug Report

• You will email the zip file produced by adb bugreport to dev.exoplayer@gmail.com after filing this issue.

[ojw28]

Thanks for the detailed report and proposed fix!

[cedricxperi]

No worries. Thanks for looking in to this!

[ojw28]

Please see email. Thanks!