来源:http://asciiwwdc.com/2014/sessions/513   Direct Access to Video Encoding and Decoding  Session 513 WWDC 2014 Discover how to use AV Foundation and Video Toolbox to access hardware accelerated encoding and decoding services. Gain best practices fo…

Object Encoding and Decoding with NSSecureCoding Protocol February 27, 2014 MISC NSCoding is a fantastically simple and convenient way to store data on iOS or Mac OS by turning your model objects directly into a file and then loading it back into mem…

BACKGROUND The present disclosure relates to the resource management of virtual machine(s) using hardware address mapping, and, more specifically, to facilitate direct access to devices from virtual machines, utilizing control of hardware address tra…

> General file encoding ways We most know, computer stores files with binary coding like abc\xe4\xbd\xa0\xe5\xa5\xbd\xef\xbc\x81. Generally, we do have some ways to encoding a file to solve other character excluding English which can'd be encoding. L…

如何在Node.js中encode一个字符串呢?是否也像在PHP中使用base64_encode()一样简单? 在Node.js中有许多encoding字符串的方法,而不用像在JavaScript中那样定义各种不同的全局函数.下面是如何在Node.js中将一个普通字符串encode成Base64格式的代码: var b = new Buffer('JavaScript'); var s = b.toString('base64'); // SmF2YVNjcmlwdA== 下面是decode b…

原文网址:http://www.sandyscott.net/2013/08/14/virtualbox-direct-drive-access/ I’ve trying to get my Raspberry Pi working with a touchscreen (eGalax Touch). This blog post has been an incredible help, but I stumbled at the very last hurdle – modifying the…

//charator Str to Hex function strToHex(str) { var rs = ""; for (var i = 0; i < str.length; i++) rs = (rs == "" ?"":rs + ",")+ str.charCodeAt(i).toString(16); return rs; } //Hex to charator Str function hexToStr(…

来源:http://stackoverflow.com/questions/25197169/how-to-decode-a-h-264-frame-on-ios-by-hardware-decoding How to decode a H.264 frame on iOS by hardware decoding? up vote 8 down vote favorite 4 I have been used ffmpeg to decode every single frame that I…

H.264格式,iOS硬编解码 以及 iOS 11对HEVC硬编解码的支持 1,H.264格式 网络表示层NAL,如图H.264流由一帧一帧的NALU组成: SPS:序列参数集,作用于一系列连续的编码图像: PPS:图像参数集,作用于编码视频序列中一个或多个独立的图像: 这两个帧也是独立的NALU. I-Frame:关键帧,帧内编码后的帧,显示比较完全的一帧: P-Frame:参考前一帧,可能只是对比前一帧的运动估计的变化部分: B-Frame:会参照前后的帧,其他类似P-Frame.B和P F…

来源:http://www.cnblogs.com/michaellfx/p/understanding_-VideoToolboxDemo.html iOS硬解H.264:-VideoToolboxDemo源码分析[草稿] iOS硬解H.264:-VideoToolboxDemo源码分析 -VideoToolboxDemo为VideoToolbox的简单应用示例. 1 - 初始化 (一)初始化FFmpeg SuperVideoFrameExtractor类提供了两个初始化方法, initWit…