hex | Personal music library
kandi X-RAY | hex Summary
kandi X-RAY | hex Summary
"He was spending more nights now watching Hex trawl the invisible writings for any hints. In theory, because of the nature of L-space, absolutely everything was available to him, but that only meant that it was more or less impossible to find whatever it was you were looking for, which is the purpose of computers." — Terry Pratchett (in The Last Continent). Hex is a collection of crates which can store, manage, tokenise and play music. It was born out of the desire to be independent from any music provider and to support music tokens (real world objects like CDs representing a playlist). The project is written in Rust and at the moment running on two peers, a storage and playback device. The Hex project is all about music and its very important for us to have a acessible and easy user experience. For a developer this means that the project is chunked into useful components. The server plays the role of providing the music to every client with help of the database and music-container crates. The database crate defines objects like Playlist, Track, Token, etc. and provides useful functions to manage them in a SQLite database. The music-container converts raw audio to the Hex specific audio format. Two important points are that is uses the Opus codec to achieve good compression levels and saves the audio in a Spherical Harmonic format (though only minimal support at the moment, but extendable and backward compatible). With help of those libraries the server offers JSON calls to modify the database, play and swallow music. It can also provide the frontend with help of a HTTP server. The frontend connects to the websocket server and gives a nice overview and some tools to manage the music. The second streaming client (working with websockets too) is the stream-client which supports tokens and runs on a small ARM chip with four buttons and the MFRC522 reader. The local-client is a handy tool to manage the database without the graphical burden of a frontend. It can add music, change metadata and list information about Hex. As a local client it can only be used on the same computer as the server. As a user you should start by installing Rust and compiling the server. It should pull in all necessary libraries. Then you can define the configuration as described there. This gives you a webinterface to manage your music, download, upload and play it. I'm using a systemd job to start the nightly-worker every night. If you want to use the stream-client and start using tokens, then please contact me, we built a prototype with a chip and used a MFC522 reader to read out the tokens. Please consider that the goal of Hex is not a general purpose audio player, but to provide a music library. For this we don't support any audio files, only storing to and retrieving audio from Hex. The file format is irrelevant and can be choosen as long as ffmpeg supports it. In my childhood I had a lot of audio tapes and CDs, they were very convenient to put somewhere and to use at wish. I didn't have to stare at a computer screen or learn some complicated GUI structure. Just put them in the audio player and listen to music. With the emergence of streaming service this changed a lot. I have now to scroll through a list of playlists and the physical remebrance of a particular playlist is missing for me. In my opinion no computer interface can replace the way an object helps your brain to remember the associated content. So we changed the idea of a tape a little bit and are using now NFC tags encapsulated by a small wodden block to put a sticker on it. They can be stacked and put into a player which immediately starts to play the associated playlist. One nice thing is that the play/stop button are not needed anymore, because just removing the token pauses the music and saves the position. This is planned and has a high priority. For now I'm trying to fix more important bugs and get the existing system working without problems.
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Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of hex
hex Key Features
hex Examples and Code Snippets
Lines of Code : 22
License : No License
Copyconst hexToRGB = hex => {
let alpha = false,
h = hex.slice(hex.startsWith('#') ? 1 : 0);
if (h.length === 3) h = [...h].map(x => x + x).join('');
else if (h.length === 8) alpha = true;
h = parseInt(h, 16);
return (
'rgb' +
const extendHex = shortHex =>
'#' +
shortHex
.slice(shortHex.startsWith('#') ? 1 : 0)
.split('')
.map(x => x + x)
.join('');
extendHex('#03f'); // '#0033ff'
extendHex('05a'); // '#0055aa'
const RGBToHex = (r, g, b) =>
((r << 16) + (g << 8) + b).toString(16).padStart(6, '0');
RGBToHex(255, 165, 1); // 'ffa501'
def hex_to_bin(hex_num: str) -> int:
"""
Convert a hexadecimal value to its binary equivalent
#https://stackoverflow.com/questions/1425493/convert-hex-to-binary
Here, we have used the bitwise right shift operator: >>
Shif public static void main(String[] args) {
// Expected RGB-values taken from https://www.rapidtables.com/convert/color/hsv-to-rgb.html
// Test hsvToRgb-method
assert Arrays.equals(hsvToRgb(0, 0, 0), new int[]{0, 0, 0});
def reformatHex(i):
"""[summary]
Converts the given integer into 8-digit hex number.
Arguments:
i {[int]} -- [integer]
>>> reformatHex(666)
'9a020000'
"""
hexrep = format(i, "08x")
thing = ""
Community Discussions
Trending Discussions on hex
QUESTION
I am a beginner learning from a tutorial on how to change the colour of a selected area of a picture with a range of colour options.
I can figure out how to change one area, but unsure how to implement the other areas.
What I want to achieve is to click on the selected area, it highlights the border (CSS), then change the colour by using the colour options.
What is the best way to implement this? I'm I correct in thinking maybe a switch statement with onclick to select the specific area of the picture?
...ANSWER
Answered 2021-Jun-15 at 11:48You could try having a "select" function run when you click on one of the areas. This function would "highlight" the area (border-color), and save the id of the area in a variable.
Then when you click on the color swatches another function would run that will take the value previously saved id and select the HTML element based on that.
QUESTION
In hsl value, we can give opacity as
...ANSWER
Answered 2021-Jun-15 at 07:12You may use this way to convert the transparent for your current hex colour
For example, you want to set 40% alpha transparency to #000000 (black colour), you need to add 66 like this #66000000. The format is #AARRGGBB so you could use a format like #1C00ff00.
You could also check the full table hex -> transparent colour here https://gist.github.com/lopspower/03fb1cc0ac9f32ef38f4
QUESTION
We are programmatically creating PDF using our in house lib (C++) by adding all the required objects so that PDF readers can render them properly. Currently we are enhancing the lib to support digital signatures in PDF. Our users will use USB token or Windows certificates to sign the PDF. On studying raw PDF file with digital signature, we were able to make sense of all the objects except for the contents of Sig type object.
...ANSWER
Answered 2021-Jun-10 at 16:48Ok, the signature container is embedded correctly.
But there are issues with the signature container itself:
Both in the
SignedData.digestAlgorithmscollection and in theSignerInfo.digestAlgorithmvalue you have used the OID of SHA1withRSA, but that is a full signature algorithm, not the mere digest algorithm SHA1 expected there.Then the SHA1 hash of the signed bytes is BB78A402F7A537A34D6892B83881266501A691A8 but the hash you signed is 90E28B8A0D8E48691DAFE2BA10A4761FFFDCCD3D. This might be because you hash buffer2 and
buffer2 has empty contents data (/Contents <>)
The hex string delimiters '<' and '>' also belong to the contents value and, therefore, must also be removed in buffer2.
Furthermore, your signature is very weak:
- It uses SHA1 as hash algorithm. SHA1 meanwhile has been recognized as too weak a hash algorithm for document signatures.
- It doesn't use signed attributes, neither the ESS signing certificate nor the algorithm identifier protection attribute. Many validation policies require such special attributes.
QUESTION
I am using the BluetoothLeGatt example from here: https://github.com/android/connectivity-samples/tree/master/BluetoothLeGatt
Assume BLE connection, service and characteristic detection have all happened properly. The following data being sent is value of a characteristic.
From a custom BLE device, I am sending an array of bytes to the smartphone, for example, something line {0x00, 0x01, 0x02, 0x03, 0x04}. In the android program this is received inside the onReceive() function inside BroadcastReceiver mGattUpdateReceiver in DeviceControlActivity.java
The line
...ANSWER
Answered 2021-Jun-15 at 04:38The example you are using receives the data as a byte array already, but it appends hex representation to the data as string. This is why you get your data in both representations.
You will need to change the example in the file BluetoothLeService.java on line 149. It is currently reading
intent.putExtra(EXTRA_DATA, new String(data) + "\n" + stringBuilder.toString());
and you would need to change it to
intent.putExtra(EXTRA_DATA, new String(data) + "\n");
if you want to receive only the string representation.
QUESTION
I'm simply trying detect non-ascii characters in my C++ program on Windows.
Using something like isascii() or :
ANSWER
Answered 2021-Jun-10 at 19:40Try replacing getchar() with getwchar(); I think you're right that its a Windows-only problem.
I think the problem is that getchar(); is expecting input as a char type, which is 8 bits and only supports ASCII. getwchar(); supports the wchar_t type which allows for other text encodings. "😁" isn't ASCII, and from this page: https://docs.microsoft.com/en-us/windows/win32/learnwin32/working-with-strings , it seems like Windows encodes extended characters like this in UTF-16. I was having trouble finding a lookup table for utf-16 emoji, but I'm guessing that one of the bytes in the utf-16 "😁" is 0x39 which is why you're seeing that printed out.
QUESTION
how can i send a file/image in reactjs uploaded through an to the backend, using axios? the simple input form is this :
...ANSWER
Answered 2021-Jun-14 at 13:28Since Postman worked, your backend is setup properly. Now on to your frontend.
Axios handles multipart form data if your data is an instance of FormData.
- In your component you can set a state variable to hold the selected file
QUESTION
ANSWER
Answered 2021-Jun-14 at 08:58Just decode your hex into the raw bytes:
QUESTION
I am currently working through the Narnia CTF. I am on level 1. In level 1, we have a program that calls an environmental variable. We are allowed to change this environmental variable. When I try to set the environmental variable to some hex-code like so, the program throws a seg-fault.
...ANSWER
Answered 2021-Jun-14 at 00:14export EGG="\xeb\x11... doesn't actually interpret the escape sequences. You're setting EGG to a string with literal backslashes and hex characters.
When you use export EGG=$(python -c 'print "\xeb\x11..., Python's only job is to interpret the escape sequences. Python receives an input with literal backslashes and hex characters, and performs Python string literal parsing, producing a string with the actual bytes you wanted.
Note that this code relies on using Python 2; Python 3 string handling is very different.
QUESTION
I am making this program that deals with a lot of colors and it gives the user the freedom to change many of them. In one part of my program I use markup for one of my labels and and I realized something about the 'color' tag.
When my program starts I want my label to follow the theme but I get this warning when trying to set the color to the theme and it does not show the color correctly:
...ANSWER
Answered 2021-Jun-12 at 16:17I think u could try this I think u forget use F-string and get the wrong value
QUESTION
I m working on an IR project when we pressed the button the value are store in struct
...ANSWER
Answered 2021-Jun-12 at 11:10Just solving the compiler error (assignment to value) and warning (snprintf misspelled as snprinf) is enough to make the program work
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install hex
Rust is installed and managed by the rustup tool. Rust has a 6-week rapid release process and supports a great number of platforms, so there are many builds of Rust available at any time. Please refer rust-lang.org for more information.
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