| package main | |
| import ( | |
| "flag" | |
| "fmt" | |
| "net/http" | |
| "github.com/codegangsta/martini" | |
| "github.com/garyburd/redigo/redis" | |
| "github.com/martini-contrib/render" |
This is a small demo of how to create a library in Rust and call it from Python (both CPython and PyPy) using the CFFI
Based on http://harkablog.com/calling-rust-from-c-and-python.html which used ctypes
CFFI is nice because:
ctypes
This simple script will take a picture of a whiteboard and use parts of the ImageMagick library with sane defaults to clean it up tremendously.
The script is here:
#!/bin/bash
convert $1 -morphology Convolve DoG:15,100,0 -negate -normalize -blur 0x1 -channel RBG -level 60%,91%,0.1 $2
You might have heard of Beamr Video, and their impressive claims about reducing video bitrates by "up to 4x, without losing quality". Sounds too good to be true? Well, as a matter of fact, it is.
The four example videos that Beamr has on their site use very high bitrates - 40-50 Mbps for 1080p video. These are the kind of bitrates you find on Blu-ray discs, whereas with something like Netflix's "SuperHD" you'd only get around ~5.6 Mbps (5800 kbps) 1080p video, and with 720p Netflix video the bitrate is only around ~3.5 Mbps (3600 kbps). If you have watched online streams like these, you'll probably know that they look quite decent. Now, if you look at the Beamr Video examples, you'll notice that even for their "reduced" clips, the bitrates are still around 9 Mbps minimum, and average as high as ~30 Mbps.
At this point, you can probably see the trick that Beamr is trying to pull
| #include <stdio.h> | |
| #include <stdlib.h> | |
| #include <assert.h> | |
| typedef unsigned int u32; | |
| typedef unsigned long long u64; | |
| //------------------------------------------------------------------------- | |
| // WorkArea | |
| //------------------------------------------------------------------------- |