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Questions tagged [uint8array]

The Uint8Array typed array represents an array of 8-bit unsigned integers.

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Anycable Websocket disconnects automatically while sending binary data

I have an AnyCable/Actioncable running on a Rails 6 server, when trying to send binary (uint8Array) data over the websocket from browser to server the websocket connection will disconnect and reconnect automatically without any error (on both client…
dashb
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Round Image File

I did this code to get an image from firestore and use it as an icon for a Map Marker. final StorageReference storageReference = FirebaseStorage().ref().child("ProfilePictures/" + widget.userId); String avatarDownloadPath = await…
Milvintsiss
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How to store character code in a JavaScript Uint8Array?

In the function toCharArr the argument arr is an "array of characters" { Example: arr = ['H','e','l','l','o'] } function toCharArr(arr) { const res = new Uint8Array(arr.length); for (let i=0; i < arr.length; i++) res[i] = arr[i]; …
sp497
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Why do TypedArrays have a static length property with value 3

I just came across this gem when looking up some Uint8Array properties: TypedArray.length     Length property whose value is 3. I tried it and it is true! What? Why does this exist?!
Timmmm
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Flutter consolidateHttpClientResponseBytes not defined error?

I'm trying to parse a url image in order to turn it into Uint8 bytes and share across my share provider. When trying to consolidate my http response into bytes I get the following error The method 'consolidateHttpClientResponseBytes' isn't defined…
Charles Jr
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Change value of variable in Sources --> Scope --> Local in ChromeDevTools-GUI

I'm completly new to ChromeDev-Tools so maybe I just oversee something. This is a Screenshot of the value I want to change in a javascript when it reaches my breakpoint. I need to read the value in Screenshot and change it. Is there a way to do…
Fox Stinson
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How to handle the endianness with UInt8 in a DataView?

It seems like there is nothing to handle endianness when working with UInt8. For example, when dealing with UInt16, you can set if you want little or big endian: dataview.setUint16(byteOffset, value [,…
Maxime Dupré
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Typescript get Int8Array from ArrayBuffer

I'm reading a file as ArrayBuffer with this code: var reader: FileReader = new FileReader(); reader.readAsArrayBuffer(file); reader.onloadend = function (e) { var fileContent = reader.result; ... } I need to get the content as byte…
bigskull
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How to convert Uint8Array with byteOffset to Arraybuffer for HttpClient.post

How can I efficiently (no copy, only wrappers) convert a Uint8Array (payload) with a non-zero byteOffset to a ArrayBuffer such that it can be sent binary-style with the Angular HttpClient.post method? public post(requestUrl: string, payload:…
Gabriel
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how to convert double data to uint8 array and again return to double

I want to get data as a double so after that i send the data as uint8_t array. So I determined 2 steps.Steps; 1-First Step :Double to uint8_t #include #include #include void float2Bytes(double val,uint8_t*…
Yavuzhan Erdem
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What is the best way to modify a [UInt8] byte array in swift 4?

Hi I know many of you already know how it can be done but please help me as I'm a beginner to swift programming. Please consider this code and help me with changes, //My read code let ReceiveData = rxCharacteristic?.value if let ReceiveData…
nar0909
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Convert float values to uint8 array in javascript

I have a Float32Array with values from an audio file.I want to save it as a .wav file so I need to convert that values to a Uint8array. To convert from uint8 to float I convert first to an int16 array and then to a Float32Array (Convert int16 array…
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Convert int16 array to float

I have an array of bytes from an audio file and I want to convert it into data that I can process to filter the audio signal. I have an array like this: [239,246,96,247.....]; Each element is a uint8 byte Each 2 bytes(16 bits) represent a sample,so…
user7597554
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Send carriage return

I'm trying to connect through serial Scratchx and a piece of hardware similar to Arduino. Scratchx lets you send data in JS this way: var pingCmd = new Uint8Array(1); pingCmd[0] = 1; device.send(pingCmd.buffer); Problem is the hardware firmware…
user1094081
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swift 3 ios : convert UInt8 Array to int8

i have an UInt8 array that contains values between 0 and 255 i would like to convert this array to Int8 array in order to contains values between -128 and 127 How to achieve this in swift?
Anthony Shahine
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