ghedo

/*
 * Simple sound playback using ALSA API and libasound.
 *
 * Compile:
 * $ cc -o play sound_playback.c -lasound
 * 
 * Usage:
 * $ ./play <sample_rate> <channels> <seconds> < <file>
 * 
 * Examples:

waylan

Here's a few things I tried to write output to a python subprocess pipe.

from subprocess import Popen, PIPE

p = Popen('less', stdin=PIPE)
for x in xrange(100):
    p.communicate('Line number %d.\n' % x)

Tydus

HOWTO Cross compiling on Android

5W1H

What is NDK

NDK (Native Develop Toolkit) is a toolchain from Android official, originally for users who writes native C/C++ code as JNI library. It's not designed for compiling standalone programs (./a.out) and not compatible with automake/cmake etc.

What is Standalone Toolchain

"Standalone" refers to two meanings:

1. The program is standalone (has nothing connect to NDK, and don't need helper scripts to run it)
2. The toolchain is made for building standalone programs and libs, and which can used by automake etc.

(Optional) Why NDK is hard to use

By default, NDK uses android flavor directory structure when it's finding headers and libs, which is different from GNU flavor, so the compiler cannot find them. For Example:

caprica

/**
 * A simple program to test the audio equalizer API in LibVLC.
 *
 * An example build command:
 *
 * $gcc -std=c99 -I/home/linux/vlc/vlc/include -o equalizer equalizer.c `pkg-config --cflags --libs libvlc`
 *
 * You may also need to set PKG_CONFIG_PATH first, for example:
 *
 * $export PKG_CONFIG_PATH=/home/linux/vlc/install/lib/pkgconfig

josejuansanchez

/* JPEG 2000 - defined in IEC 15444-1 "JPEG 2000 Core (part 1)" */
  /* delimiters */
SOC   = 0x4f,	/* start of codestream */
SOT   = 0x90,	/* start of tile */
SOD   = 0x93,	/* start of data */
EOC   = 0xd9,	/* end of codestream */
  /* fixed information segment */
SIZ   = 0x51,	/* image and tile size */
  /* functional segments */

COD = 0x52, /* coding style default */

alediaferia

/*
Copyright (c) 2015-2020 Alessandro Diaferia

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

yurydelendik

NOTE: the content is out-of-date. All development is moved to the https://github.com/yurydelendik/wasmception

Using WebAssembly in LLVM

Compiling

# locations, e.g.
export WORKDIR=~/llvmwasm; mkdir -p $WORKDIR
export INSTALLDIR=$WORKDIR

tailriver

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <dlfcn.h>

int main(int argc, char** argv)
{
    void *handle;
    void (*func_print_name)(const char*);

warmwaffles

Object Files (.obj)

Object files define the geometry and other properties for objects in Wavefront's Advanced Visualizer. Object files can also be used to transfer geometric data back and forth between the Advanced Visualizer and other applications.

Object files can be in ASCII format (.obj) or binary format (.mod). This appendix describes the ASCII format for object files. These files must have the extension .obj.

williballenthin

radare2

load without any analysis (file header at offset 0x0): r2 -n /path/to/file

• analyze all: aa
• show sections: iS
• list functions: afl
• list imports: ii
• list entrypoints: ie
• seek to function: s sym.main