[Discussion - Possibility] Android Accessory 2 API and Audio Streaming - General Questions and Answers

Hello,
I have got a JVC Stereo in my Car and it support audio streaming via there media player to the stereo using USB, i'm wondering if it is at all possible even if i need to root my phone to send audio from all apps to the stereo. I am a programmer but don't know Android Programming. My thought on this was that if they can build a Media Player app to stream to the stereo via USB it should be able to do the same for any audio using some form of Audio Capture then convert it into the stream to send to the stereo would this be possible,
i have tried to decompile the JVC Media Player however i have not been completely successful the code i got was broken and unable to be compiled. `Source.zip` if it is possible would some one be able to help me build a mobile app to do this i know that it will more than likely need root as i have looked into MediaRecorder using
Code:
MediaRecorder.AudioSource.REMOTE_SUBMIX
however the first thing im trying to do is just to get audio from my device playing on the stereo, after that i will deal with trying to capture all the audio to send.

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Can someone suggest an app or maybe a route to mod this in?
If it's a no-go then I'd appreciate someone kicking me up the arse and telling me to go and have a word with myself

[APP (Idea)] video output player?

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I'm not a "programmer" but in theory this sounds like with the right effort and know how that it could be done? Possibly disable all other phone actions while in this "mode"
Your thoughts?
Sent from my HD2 DL Desire Series using XDA App

Streaming Android to Denon receiver

I was hoping you guys could help this old man out. I had a bunch of records put onto cd's. I then uploaded all the cd's to Google Play Music as it was free. I want to be able to stream my music from the Play Music on my Android phone to my surround sound. I have a Devon AVR - 1713 which has DLNA and Airplay. I have it hooked up to a PS4 and a Panasonic 55st30.
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How to stream music to a audio player(car stereo) which supports ipod,using android?

Now most of you know that if you connect your iPhone/iPod to any iPod certified audio device then you can even stream(from online services) your music to the speakers. However on android you are limited to stored media only(although newer android versions have support for this but the audio player must also support this feature).My question being how to fool the audio device(car stereo) into believing that the music is being played via iPhone.
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Digital Audio Passthrough DTS MA, Dolby etc...

Hi everyone,
I have spent some time looking for a way to pass through digital audio to Onkyo audio receiver.
I downloaded demo files, and I did several experiments, I manage to get 7.1 channels on the audio receiver, however it was in PCM format. While the Demo file is DTS-HD.
I tested the MHL cable through my tablet and I was able to get 7.1 DTS-HD. So basically the issue is from the Mobile passthrough capability. I am not sure if the limitations from the mobile hardware or software.
I tried, Plex, MX Player and several other media players.
ANyone having an Idea in the field ?!
A few years ago android had support for DTS, but they removed it because of copyright, here is an old thread about it:
https://forum.xda-developers.com/showthread.php?t=1831111
Perhaps that is still the issue, but I would love a solution for this as well.
I noticed that LGV20 dosent recognize HDMI when it is connectecd. Instead it is showing power supply to external device.
I went through the ROM folders and I found in this directory:
/Sys/class/android_usb/
all type of USB connection protocols, and non of them is display or HDMI like other Androids...
I want Dolby Vision but I don't know how to port.

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