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@mebjas
mebjas / standard_code_yuv_rgb.cc
Created April 9, 2022 05:26
Standard code for YUV to RGB with C++
// Code converting YUV image to ARGB. The actual algorithm here is not very important
for (int y = 0; y < image_height; ++y) {
for (int x = 0; x < image_width; ++x) {
int y_idx = (y * y_row_stride) + (x * y_pixel_stride);
y_val = static_cast<int16_t>(y_buffer[y_idx]);
int uvx = x / 2;
int uvy = y / 2;
int uv_idx = (uvy * uv_row_stride) + (uvx * uv_pixel_stride);
@shawwwn
shawwwn / uping.py
Last active May 10, 2024 12:25
µPing: Ping library for MicroPython
# µPing (MicroPing) for MicroPython
# copyright (c) 2018 Shawwwn <shawwwn1@gmail.com>
# License: MIT
# Internet Checksum Algorithm
# Author: Olav Morken
# https://github.com/olavmrk/python-ping/blob/master/ping.py
# @data: bytes
def checksum(data):
if len(data) & 0x1: # Odd number of bytes
@jboner
jboner / latency.txt
Last active May 10, 2024 12:23
Latency Numbers Every Programmer Should Know
Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference 0.5 ns
Branch mispredict 5 ns
L2 cache reference 7 ns 14x L1 cache
Mutex lock/unlock 25 ns
Main memory reference 100 ns 20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy 3,000 ns 3 us
Send 1K bytes over 1 Gbps network 10,000 ns 10 us
Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD
@diasporx
diasporx / JetBrains products Activation code until 14 October 2024
Last active May 10, 2024 12:23
JetBrains products Activation code until 14 October 2024
I2A0QUY8VU-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
@zachbrowne
zachbrowne / The Ultimate Bad Ass .bashrc File
Last active May 10, 2024 12:18
#!/bin/bash
iatest=$(expr index "$-" i)
#######################################################
# SOURCED ALIAS'S AND SCRIPTS BY zachbrowne.me
#######################################################
# Source global definitions
if [ -f /etc/bashrc ]; then
. /etc/bashrc
@ctron
ctron / tekton-cleanup.yaml
Last active May 10, 2024 12:18
Cleaning up Tekton pipeline runs
---
apiVersion: v1
kind: ServiceAccount
metadata:
name: cleaner
---
kind: Role
apiVersion: rbac.authorization.k8s.io/v1
metadata:
name: cleaner
@the-spyke
the-spyke / pipewire.md
Last active May 10, 2024 12:16
Enable PipeWire on Ubuntu 22.04

Enable PipeWire on Ubuntu 22.04

This guide is only for original Ubuntu out-of-the-box packages. If you have added a custom PPA like pipewire-debian, you might get into conflicts.

Ubuntu 22.04 has PipeWire partially installed and enabled as it's used by browsers (WebRTC) for recoding the screeen under Wayland. We can enable remaining parts and use PipeWire for audio and Bluetooth instead of PulseAudio.

Starting from WirePlumber version 0.4.8 automatic Bluetooth profile switching (e.g. switching from A2DP to HSP/HFP when an application needs microphone access) is supported. Jammy (22.04) repos provide exactly version 0.4.8. So, we're good.

Based on Debian Wiki, but simplified for Ubuntu 22.04.

@jrapoport
jrapoport / different-ssh-deploy-keys-multiple-private-repos-github-go-mod.md
Last active May 10, 2024 12:14
How to use different ssh deploy keys for multiple private github repositories with Golang Modules (go mod)

How to use different ssh deploy keys for multiple private github repositories with Go Modules

Let's assume you are using Go Modules and have a go.mod file that contains multiple private repos each with a different ssh key. How can you get go mod download to do the right thing -- i.e. use ssh key A with private repo A and ssh key B with private repo B?

Ok, here we go!

Let's assume you have some github.com user with multiple private repos:

https://github.com/someuser/private-repo-1

@dushankw
dushankw / android-udev.rules
Last active May 10, 2024 12:10
# Create this file in /etc/udev/rules.d/51-android.rules (root owned, bitmask 0644)
# Reload udev (udevadm control --reload-rules)
#
# It will allow members of the `adbusers` group to access the phone over usb without being root
# You should create a new unprivileged user who is a member of this group, then run `adb` as said user
#
# To add a new device, plug in the device and run `lsusb` to determine its device id then add it in, eg:
# $ lsusb
# Bus 002 Device 063: ID 18d1:4ee7 Google Inc. Nexus/Pixel Device (charging + debug)
@kennypete
kennypete / navigating_the_modes_of_Vim.md
Created April 18, 2024 20:46
Navigating the modes of Vim

Navigating the modes of Vim

This diagram illustrates navigating through Vim’s modes. It was built factoring Vim 9 (i.e., all its modes, including up to two new modes, cr and cvr, in November 2023). Information about the state() and 'showmode' is provided too.

SVG version

Some features are only available in the SVG version. It is not provided directly from within this gist’s files because SVGs do not always play nicely in GitHub (particularly, refusing to display embedded fonts).

The SVG version includes hover text help, which shows pertinent information about the underlying key, command, mode, etc.