How to Make YUV Resolution Conversion-FFMPEG to Realize the swscale of YUV and RGB Image Primitive Data

swscale in FFMPEG provides the conversion and resolution conversion between the original video data (YUV420, YUV422, YUV444, RGB24 etc.). It is very convenient to use. Here we record its usage. swscale is mainly used for conversion between two AVFrame s. Let's look at a simple example of video decoding. This program completes the decoding ...

Posted on Mon, 07 Jan 2019 11:03:11 -0500 by m3rajk

JavaScript instanceof deep profiling and the use of Object.prototype.toString.call()

This paper derives from an instance of problem on segementfalt: var str = new String("hello world"); console.log(str instanceof String);//true console.log(String instanceof Function);//true console.log(str instanceof Function);//false Beyond this question, we all know that typeof can detect the basic data types of variables in JS. let s = "ab ...

Posted on Sat, 05 Jan 2019 17:54:09 -0500 by jfugate

iOS records some pits of UIWeb & WKWeb about cookie, session, JS interaction

Last week, in the release version, we had to do some interactive login, Native call, Wechat payment and other requirements with the web. This made me very interested in JS and it was very interesting. Most of the previous projects used WK WebView, and a few used UI WebView for compatibility with some third-party pages. WK's API an ...

Posted on Thu, 03 Jan 2019 17:00:11 -0500 by skoobi

Unit 1 overview of IT Industry

Unit 1 overview of IT Industry Concept Learning IT Industry Outlook The term technology commonly refers to society's application of scientific knowledge to solve practical problems in industry or commerce. Technological innovation, or the application of technology, takes many forms and often involves the interplay of expertise across multipl ...

Posted on Sat, 29 Dec 2018 11:06:07 -0500 by pyr

Call Screening on Android N

For reprinting, please indicate the source: http://blog.csdn.net/aaa111/article/details/72568691 Previously, I saw a series of new and changed features of Android N when I was looking at the official Android Document System, because the part responsible for the work is related to the call, especially the Call Screening. Here's a brief int ...

Posted on Tue, 25 Dec 2018 22:33:08 -0500 by wholein1

Excellent Front-end Series (V) - Virtual Dom && Diff

First of all, we have to be clear about the so-called virtual dom, which is the virtual node. It simulates nodes in DOM through JS Object objects, and then renders them into real DOM nodes through specific render methods. Secondly, we also know what virtual dom does. We know that the usual way to re-render a page is to do this ...

Posted on Tue, 25 Dec 2018 19:54:06 -0500 by ulrikqk

Flex Layout [Flex Layout Introduction Series - By darkhandz]

FlexLayout Introduction Series (1) Maybe it was in the pit at the end of April. Look at it then. The Nuggets have an article on Flexbox One implementation on the mobile side is yoga on Facebook, and the corresponding implementation on iOS is called YogaKit. The original Flexbox layout is popular on the web side. After reading ...

Posted on Mon, 24 Dec 2018 03:24:05 -0500 by jovankau

Complete Page model UI automation framework

PrefaceImagine a scenario where you have multiple lines of business in a company or department. If you have such a framework, when you tell it which browser you want to execute the automated use case of that line of business, you can complete the page access you want through an adapter class, and you just need to tell it about the page you wrot ...

Posted on Mon, 24 Dec 2018 00:09:07 -0500 by BuzzStPoint

Data Table component of layUI (parent-child table management value transfer/data table combined with select&laydate, etc.)

Data Table Data Table Component of layUI [TOC] Summary There are many requirements for table operation in company projects, such as "data transfer by parent-child table association", "select component in table", "date control in table", "validation of table input format", "adding (delet ...

Posted on Sun, 23 Dec 2018 22:48:06 -0500 by Brandito520

Android Architecture Components LiveData Component Parsing

1 Preface Simply put, LiveData is a data holding class that can be observed by an observer. It has the following characteristics Data can be subscribed to by observers. Be able to perceive the life cycle of components (Fragment, Activity, Service); Only when the component is active (STARTED, RESUMED) will the observe ...

Posted on Fri, 21 Dec 2018 20:48:05 -0500 by Nathan__02