Cross Platform Audio stream not playing

[dhalloop7]

I am writing code to stream audio data over a socket. It's working fine with Android to Android and iOS to iOS devices. But When I am trying to stream bytes from Android and trying to play on iOS It's not playing the received buffer.
I also noticed that the chunk length received from the plugin is 7156 white from iOS its length is 16386.

[CasperPas]

I think the problem is on Android side, Uint16 (16bit PCM) is converted to Uint8 to transfer to dart side, iOS does the same thing but I used "pointer conversion" (withMemoryRebound). I think Android's algorithm should be refactored. I'll fix & test it over a socket. Are you using WebSocket, @dhalloop7 ?

[dhalloop7]

Yes, @CasperPas I am using WebSocket.

[RizanPSTU]

Dose cross-platform works?

[RizanPSTU]

I am also using socket io

[dhalloop7]

I tried today ios to ios as well but it won't work for me. Android to Android share byte and play works good for me

[CasperPas]

@dhalloop7 could you provide the steps to reproduce the issue? I've tried multiple times with websocket and it's fine as long as it's not cross-platform (I'm working on that)

[CasperPas]

I'm working on it and if you guys have any ideas, all contributions are really appreciated
#5

[dhalloop7]

I am using socket.io for sending and receiving bytes from one device to another.

During initializing recorder and player I am using sampleRate 44100.

At the sender side when I am getting the bytes in the stream I am emitting those bytes with some additional information over the event.

_recorder.audioStream.listen((data) {
      socket.emit("eventName",data);
});

At the receiver side as soon as socket connects I am initializing the player and called method start.
i.e

await _player.initialize();
await _player.start();

And when I am receiving the data bytes or chunks over the socket I am trying to play chunks as below.

 _socket.on(event, (data){
       _player.writeChunk(data);
});

I am also doing trial and error with changing the bit format (8, 16, 32) of recorder and player. You can try by doing it as well.

[CasperPas]

@dhalloop7 @RizanPSTU
hey guys, try my PR again. I've just pushed a new commit to fix this. The main problem is byte's order: LITTLE_ENDIAN.
#5

I'll do some extra tests and if it's ok, I'll publish a new version 😄

[dhalloop7]

Sounds great. I am trying it now.

[CasperPas]

I updated the package, is it working well?

[dhalloop7]

Yes, I tried from the branch. It's player for iOS to Android but not played for Android to iOS.

[CasperPas]

Can you try it again from master? I tested it with both my iPhone and simulator and it works fine. Did iOS receive the data from Android properly? Please help me test it with logging/debugging.

[dhalloop7]

I tried with the master branch. It plays the bytes from iOS to Android. iOS receiving the bytes from Android device properly but it's not playing any chunks. Whereas bytes from iOS received at the Android side are playing but not playing in iOS devices.

[CasperPas]

which devices (iOS and Android) are you using?