Halide学习笔记----Halide tutorial源码阅读2

Halide入门教程02

---

// Halide tutorial lesson 2: Processing images
// Halide入门第二课： 处理图像

// This lesson demonstrates how to pass in input images and manipulate
// them.
// 本课展示了如何读入图像数据，并操作像素

// On linux, you can compile and run it like so:
// 在linux操作系统，你可以按照如下方式编译和运行该代码
// 运行之前确保操作系统安装了libpng和libjpeg库，可以到对应的sourceforge上找到对应的代码编译安装,
// 或者采用linux系统的包管理系统进行安装，debian系操作系统
// sudo apt-get install libpng
// sudo apt-get install libjpeg
// g++ lesson_02*.cpp -g -I ../include -I ../tools -L ../bin -lHalide `libpng-config --cflags --ldflags` -ljpeg -lpthread -ldl -o lesson_02 -std=c++11
// LD_LIBRARY_PATH=../bin ./lesson_02

// On os x:
// g++ lesson_02*.cpp -g -I ../include -I ../tools -L ../bin -lHalide `libpng-config --cflags --ldflags` -ljpeg -o lesson_02 -std=c++11
// DYLD_LIBRARY_PATH=../bin ./lesson_02

// If you have the entire Halide source tree, you can also build it by
// running:
//    make tutorial_lesson_02_input_image
// in a shell with the current directory at the top of the halide
// source tree.

// The only Halide header file you need is Halide.h. It includes all of Halide.
#include "Halide.h"

// Include some support code for loading pngs.
// halide_image_io.h提供了png格式图片的读写函数