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selvan / floating_bottom_nav_bar.dart
Last active May 14, 2024 05:34
Floating bottom navbar in Dart
import 'package:flutter/material.dart';
import 'package:flutter/rendering.dart';
void main() {
runApp(MaterialApp(home: HomePage()));
}
class HomePage extends StatelessWidget {
@override
Widget build(BuildContext context) {
@selvan
selvan / Ray tracing - Typescript
Created September 12, 2018 03:12
// Copied from typescript playground - https://www.typescriptlang.org/play/
class Vector {
constructor(public x: number, public y: number, public z: number) { }
static times(k: number, v: Vector) {
return new Vector(k * v.x, k * v.y, k * v.z);
}
@selvan
selvan / chrome-bookmarks
Created December 16, 2012 15:26
Chrome extension to export all bookmarks
//manifest.json
{
"name": "bookmark-search-export",
"version": "1.0",
"manifest_version": 2,
"description": "This extention will dump all bookmarks",
"browser_action": {
"default_icon": "icon.png"
},
"background": {
@selvan
selvan / go_build_cgo_ldflags
Last active April 9, 2023 06:33
GO build with cgo ldflags
go clean -cache
CGO_LDFLAGS="-L/usr/local/Cellar/x264/r3095/lib" go build
@selvan
selvan / ui_controls.md
Created October 10, 2021 11:16
UI controls
@selvan
selvan / mask_pil.py
Created July 22, 2021 17:40
Mask image generation python
## Rectangle mask
size = (1280, 720)
first_half = (size[0]/2, size[1])
second_half = (first_size_half[0]+1, size[1])
mask = Image.new("L", size, 255)
draw = ImageDraw.Draw(mask)
draw.rectangle((second_half[0], 0, size[0], size[1]), fill=0)
mask.save("/tmp/mask.jpg")
@selvan
selvan / VideoEncoder.java
Created March 20, 2021 01:38
rtmppublisher - Drain encoder via call back + Set bitrate on the fly
package com.takusemba.rtmppublisher;
import android.media.MediaCodec;
import android.media.MediaCodecInfo;
import android.media.MediaFormat;
import android.os.Build;
import android.os.Bundle;
import android.os.Handler;
import android.os.HandlerThread;
import android.support.annotation.RequiresApi;
@selvan
selvan / CameraFragment.kt
Created March 20, 2021 01:36
Camera2Video - https://github.com/android/camera-samples.git - Draw to OffscreenSurface (eglCreatePbufferSurface)
/*
* Copyright 2020 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
@selvan
selvan / ContinuousCapture.java
Created March 20, 2021 01:30
Grafika - Experiment on replacing WindowSurface (eglCreateWindowSurface) with OffscreenSurface (eglCreatePbufferSurface)
/*
* Copyright 2014 Google Inc. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
@selvan
selvan / nvm.md
Created February 8, 2021 07:40
Installing, Configuring and Using NVM

Install:

curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.37.2/install.sh | bash

Configuration: add below to .bashrc .bash_profile

export NVM_DIR="$HOME/.nvm"
[ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh"  # This loads nvm