how to play Uint8List

[shingohu]

How to convert Uint8List to PcmArrayIt16 for playback? I used PcmArrayIt16.fromList (audio) and it couldn't play `properly. If I modify the feed method to the following way, it can play normally

  static Future<void> feed1(Uint8List buffer) async {
    return await _invokeMethod('feed', {'buffer': buffer});
  }

[chipweinberger]

PcmArrayInt16.fromList(List<int> list) expects integer range 0-65536

you probably are passing 0-255 range integers.

you can try PcmArrayInt16({required this.bytes}); instead.

[shingohu]

PcmArrayInt16

Sorry, I'm not quite sure how to convert Uint8list to ByteData, and I can't play it properly using the following methods FlutterPcmSound.feed(PcmArrayInt16(bytes: ByteData.view(data.buffer)));

[chipweinberger]

Uint8List uint8List = Uint8List.fromList([1, 2, 3, 4]); // Example data
ByteData byteData = uint8List.buffer.asByteData();

[shingohu]

Uint8List uint8List = Uint8List.fromList([1, 2, 3, 4]); // Example data
ByteData byteData = uint8List.buffer.asByteData();

I have tried this method before, but it did not work

Can you provide a feed method that directly passes Uint8List

[chipweinberger]

no. because uint8list does not specify which endianness it is.

does the example work? start with the example, and debug why it works and yours does not.

print the bytes.

[shingohu]

不，因为 uint8list 没有指定它是哪种字节顺序。

这个例子能工作吗？从例子开始，调试为什么它能工作而你的不能。

打印字节。 I haven't used an example . our app recorded 8k 16 bit single channel data using record and played it back through this library.