barrbrain

barrbrain

barrbrain

barrbrain

barrbrain

/*Daala video codec
Copyright (c) 2003-2010 Daala project contributors.  All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

- Redistributions of source code must retain the above copyright notice, this
  list of conditions and the following disclaimer.

- Redistributions in binary form must reproduce the above copyright notice,

barrbrain

import math

P = 2.25

def quant(cq): return math.trunc(math.exp((cq-6.235)*.10989525)*16.0)

def curve(cq): return quant(cq-math.pow(cq-1,P)/(2.0*P*math.pow(62.0,P-1)))

print(', '.join(['0x%04X' % n for n in [0] + [curve(cq) for cq in range(1,64)]]))

barrbrain

#!/usr/bin/env python3.4
from collections import deque
import sys
import numpy as np
from skimage import color
import random
from scipy import ndimage

# Assuming BT.709
yuv2rgb = np.array([

barrbrain

#!/bin/bash
# REQUIRES imagemagick compiled with HDRI feature enabled
SIZE=$(head -n1 "$1" | sed -E 's/.*W([0-9]*) H([0-9]*).*/\1x\2/')
FMT="-size $SIZE -depth 8 -sampling-factor 4:2:0 -interlace plane -set colorspace Rec709YCbCr"
convert $FMT YUV:<(tail -n+3<"$1") YUV:<(tail -n+3<"$2") \
  -colorspace Lab -compose difference \
  -composite -evaluate Pow 2 -separate -evaluate-sequence Add \
  -filter box -resize 1x1\! -format "%[fx:-10*log(u)]\n" info:

barrbrain

#!/bin/bash
readlinkf(){ perl -MCwd -e 'print Cwd::abs_path shift' "$1";}
DAALA_ROOT="$(readlinkf ${DAALA_ROOT:-.})"
INPUT_IMAGE="$(readlinkf $1)"
OUTPUT_VIDEO="$(readlinkf ${2:-$(basename "$INPUT_IMAGE").webm})"
cq="0 1 2 3 4 5 7 9 11 13 16 19 22 25 28 33 38 44 50 57 64 73 82 92 104 117 132 148 166 187 209 235 263 295 330 369 413 462"
P=${P:-4}
( 
  cd /tmp
  FIFOS="`echo -n $cq|sed 's/[0-9][0-9]*/&.y4m/g'`"

barrbrain

#!/usr/bin/python
import xml.sax
from igraph import Graph
from collections import defaultdict

class XWN( xml.sax.ContentHandler ):
  def __init__(self):
    self.graph = Graph(directed = True)
    self.synSets = []
    self.currentTag = ""