Voldrix

unsigned char* rgb_to_monochrome(unsigned char *rgbImg, int width, int height, int colorspace, int weighted) { //RGB(A) -> Mono
  unsigned char *monoImg = malloc(width * height);
  int m = 0, n = 0;
  register r = width * height;

  //weighted averaging better matches human perception. Human eyes perceive green more strongly than red, and red more strongly than blue
  //the standard weights are about .3R + .6G + .1B
  //the weights here are adusted to make them faster to compute. The difference is minimal
  if(colorspace == 3) { //RGB
    if(weighted) //weighted averaging

Voldrix

#include <string.h>
#include <unistd.h>
#include <pthread.h>
#include <netinet/in.h>
#include <sys/socket.h>
#include <signal.h>

#define THREADS 4
#define QUEUE_DEPTH 32 //power of 2
#define BUFFER_SIZE 2048

Voldrix

//convert an integer IPv4 address to a string OR a string to an integer IPv4 address


//STR to IP
static unsigned int str_to_ip(char *str) {
  //assumes str is properly formatted IPv4 address
  register unsigned int ip, octet;
  register char *tail = str;
  while(*tail++)
    ; //work backwards to track decimal position

Voldrix

static const unsigned char digits[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
//if you trust your input only has valid characters (defined above), you can cut this in half (123 instead of 256)
//probably not recommended, just in case, as invalid characters could cause a seg fault
unsigned char digitsDecode[256] = {0};

for(int i = 0; i < 64; i++)
  digitsDecode[digits[i]] = i;


int base64_encode(register unsigned char *buff, unsigned char* str, int len) {

Voldrix

#!/bin/bash
#Generate .BIF media preview thumbnails
#REQUIRES: ffmpeg, mediainfo, and roku's biftool

if [ -z "$1" ]; then echo -e "\nGenerate .BIF media preview thumbnails\nFiles are stored in source folder\n\nUsage: ${0##*/} [video files/directories...] <Absolute or Relative paths. Recursive>\n";exit 1;fi

tmpdir="/tmp/bifgen"
[ -d "$tmpdir" ] && rm -f "$tmpdir"/* || mkdir -p "$tmpdir"

IFS=$'\n'

Voldrix

#!/bin/bash
#Creates an animated thumbnail of a video clip
#This script uses scene cuts instead of fixed time intervals, and does not work well for videos with few/infrequent scene cuts
if [ -z "$1" ];then echo "Usage: <Video Files...> [outputs to same dir as input]" &>2;exit 1;fi

numOfScenes=8 #max number of scenes
sceneLength=1.5 #length of each scene in seconds
sceneDelay=1.7 #time (seconds) after a frame cut to start scene (to avoid transition effects)

for i;do