roxlu

Below is a dump of a STUN message that can be used to validate your 
STUN message integrity check. The password that is used to encrypt
the Message-Integrity is: "Q9wQj99nsQzldVI5ZuGXbEWRK5RhRXdC" (without quotes)


/* Raw STUN message as received from Chrome */
-----------
00 01 00 58
21 12 A4 42
48 75 38 77

roxlu

#include <stun/Reader.h>
#include <openssl/engine.h>
#include <openssl/hmac.h>
#include <openssl/evp.h>


namespace stun {

  /* --------------------------------------------------------------------- */

roxlu

/*

  test_ssl_fingerprint
  --------------------

  This code shows the following:

  - use openssl to generate a private key that can be used to encrypt application data
  - extract the fingerprint from the key

roxlu

/*

  test_vorbis
  ------------

  See online version: https://gist.github.com/roxlu/af1ffc1290b9dc37b5b9

  Example code which decodes a .ogg file that contains vorbis and/or
  some other stream, e.g. theora. We ignore all non-vorbis streams and 
  simply flush the packets. 

roxlu

#include "krx_dtls.h"

int krx_dtls_init() {
  SSL_library_init();
  SSL_load_error_strings();
  ERR_load_BIO_strings();
  OpenSSL_add_all_algorithms();
  return 0;
}

roxlu

/* 

    Create server/client self-signed certificate/key (self signed, DONT ADD PASSWORD) 

    openssl req -x509 -newkey rsa:2048 -days 3650 -nodes -keyout client-key.pem -out client-cert.pem
    openssl req -x509 -newkey rsa:2048 -days 3650 -nodes -keyout server-key.pem -out server-cert.pem

*/

#include <stdio.h>

roxlu

#include "H264_Decoder.h"

H264_Decoder::H264_Decoder(h264_decoder_callback frameCallback, void* user) 
  :codec(NULL)
  ,codec_context(NULL)
  ,parser(NULL)
  ,fp(NULL)
  ,frame(0)
  ,cb_frame(frameCallback)
  ,cb_user(user)

roxlu

Mitchell’s best-candidate algorithm generates a new random sample by creating k candidate samples and picking the best of k. Here the “best” sample is defined as the sample that is farthest away from previous samples. The algorithm approximates Poisson-disc sampling, producing a much more natural appearance (better blue noise spectral characteristics) than uniform random sampling.

See also the white-on-black and Voronoi variations of this example.

roxlu

/*
  
  PDF
  ----
  Very basic application which generates a poster from a 
  set of images. This application was created because I wanted
  to have a poster from my instagram images. It uses a couple of
  php files that login to my instagram account and generates a 
  shell script which downloads them to a directory. 

roxlu

uniform sampler2D u_scene_tex;
in vec2 v_tex;
out vec4 fragcolor;
void main() {
  fragcolor = texture(u_scene_tex, v_tex) * 0.186315;
  fragcolor += texture(u_scene_tex, v_tex + vec2(0.0, 0.00208333)) * 0.168585;
  fragcolor += texture(u_scene_tex, v_tex - vec2(0.0, 0.00208333)) * 0.168585;
  fragcolor += texture(u_scene_tex, v_tex + vec2(0.0, 0.00416667)) * 0.124891;
  fragcolor += texture(u_scene_tex, v_tex - vec2(0.0, 0.00416667)) * 0.124891;
  fragcolor += texture(u_scene_tex, v_tex + vec2(0.0, 0.00625)) * 0.0757501;