dwbuiten

lib\libclang.lib lib\clangARCMigrate.lib lib\clangRewriteCore.lib lib\clangFrontend.lib lib\clangDriver.lib lib\clangSerialization.lib lib\clangParse.lib lib\clangSema.lib lib\clangEdit.lib lib\clangAnalysis.lib lib\clangAST.lib lib\clangLex.lib lib\clangBasic.lib lib\LLVMMC.lib lib\LLVMMCParser.lib lib\LLVMObject.lib lib\LLVMSupport.lib ;ib\LLVMBitstreamReader.lib lib\LLVMBitstreamWriter.lib lib\shell32.lib lib\Advapi32.lib

dwbuiten

#!/bin/sh -e

# Replace with whatever versions you need
ZEN_VERSION=0.4.29
LIB_VERSION=0.7.63
MED_VERSION=0.7.63
PREFIX=/usr/local

wget http://mediaarea.net/download/source/libzen/${ZEN_VERSION}/libzen_${ZEN_VERSION}.tar.bz2
wget http://mediaarea.net/download/source/libmediainfo/${LIB_VERSION}/libmediainfo_${LIB_VERSION}.tar.bz2

dwbuiten

#!/usr/bin/env perl

use strict;
use warnings;
use bigint;
use File::Spec;
use JSON::XS;

my $filename = $ARGV[0];
my $data = `ffprobe -show_streams -show_format -show_frames -of json $filename`;

dwbuiten

/*
 * posix_memalign wrapper with random failurres
 *
 * Copyright (c) 2013, Derek Buitenhuis
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES

dwbuiten

switch mystr {
case "a", "b", "c", "d", "e":
default:
    dostuff()
}

// versus

if myster != "a" && mystr != "=" && mystr != "c" && mystr != "d" && mystr != "e" {
    dostuff()

dwbuiten

#include <inttypes.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include <lsmash.h>

typedef struct ts {
    uint64_t dts;

dwbuiten

Problems & Solutions for Interaction Between C and Go

At Vimeo, on the transcoding team, we work a lot with Go, and a lot with C, for various tasks such as media ingest. This means we use CGO quite extensively, and consequently, have run into bits that are perhaps not very well documented, if at all. Below is my effort to document some of the problems we've run into, and how we fixed or worked around them.

Many of these are obviously wrong in retrospect, but hindsight is 20/20, and these problems do exist in many codebases currently.

Some are definitely ugly, and I much welcome better solutions! Tweet me at @daemon404 if you have any, or have your own CGO story/tips, please! I'd love to learn of them.

Table of Contents

dwbuiten

// Package cref implements a way to hose your Go garbage collection.
package cref

import (
    "fmt"
    "unsafe"
)

/*
 #include <pthread.h>

dwbuiten

draw.c:30: error: CHECKERS_DEAD_CODE
  Node not visited: 20
  28.   static inline char get_char(char c)
  29.   {
  30. >     if (c > 31 && c < 127)
  31.           return c;
  32.       else
  33.

Original code here: https://github.com/dwbuiten/bxd/blob/master/draw.c#L28-34

dwbuiten

draw.c:30: error: CHECKERS_DEAD_CODE
  Node not visited: 20
  28.   static inline char get_char(char c)
  29.   {
  30. >     if (c > 31 && c < 127)
  31.           return c;
  32.       else
  33.

Original code is here: https://github.com/dwbuiten/bxd/blob/master/draw.c#L28-34