Packaging and Encoding of [Image_Codec] Common Picture Formats-Android Platform PNG

Article directory PNG Picture Format PNG file structure PNG Compression Principle PNG picture codec libpng PNG Picture Format PNG(Portable Network Graphics) is a rasterized, lossless compressed image file format. The purpose of the design is ...

Posted by cafrow on Mon, 16 Sep 2019 22:45:46 -0700

Filebeat->Logstash->Kafka Data Acquisition Channel Construction

Construction of Filebeat-> Logstash-> Kafka Data Acquisition Platform brief introduction demand programme Filebeat Logstash Unfinished Work brief introduction Because our company needs to collect data from various businesses, we need ...

Posted by msimonds on Sun, 15 Sep 2019 23:17:14 -0700

Netty Learning Summary

Articles Catalogue Summary What is Netty? Why don't Netty 2 use NIO directly? API usage Using Netty to Create Server-side Programs I. Body Code childHandler Actual Handler Using Netty to Create Client Programs I. Body Code handler Actual Han ...

Posted by FeralReason on Sun, 08 Sep 2019 23:12:24 -0700

SpringBoot integrates Netty + Websocket to realize NIO communication

Long-connection services are needed in recent projects to specifically integrate Netty+Websocket. Our system needs to actively push order messages to users, and the function of forcing users to go offline also needs long connections to push messages. ...

Posted by WakeAngel on Sat, 07 Sep 2019 03:38:53 -0700

Python: Converting Text Coding

Recently, when making weekly reports, we need to extract the data from the csv text and make tables to produce charts. When acquiring csv text content, it is basically used with open(filename, encoding ='UTF-8') as f: to open csv text, but in the actual use process, it is found that some csv text is not UTF-8 format, resulting in errors in the ...

Posted by ununium on Mon, 26 Aug 2019 22:47:07 -0700

webrtc Code Walkthrough 15 (X264 Code Opening FEC is less effective than VP8 Problem Location) - - to be continued

I. Problem Description 1) Pre-conditions 1. Configuring the anti-loss method of webrtc is FEC Only. There are two anti-loss methods for webrtc: 1. NACK; 2. FEC. When starting configuration, you can choose to use NACK or FEC only or NACK and FEC at the same time. Using both NACK and FEC, webrtc wo ...

Posted by Whitestripes9805 on Thu, 01 Aug 2019 03:09:14 -0700

ffmpeg - android Platform Source Coding (latest version 4.1)

ffmpeg - the latest version of source code compilation for android platform 4.1 1. Introduction of ffmpeg: 2. Source code download: 3. Environmental allocation: IV. Configuration file modification: V. Scripting: 6. Compiling: 7. Trampled pits error 1: error 2: error 3: error 4: error 5: VIII. Supp ...

Posted by IanM on Sun, 28 Jul 2019 22:28:26 -0700

Implementation of RSA Encryption Algorithms in java

Reproduced from: https://blog.csdn.net/zyhlwzy/article/details/77948195 RSA encryption algorithm is currently the most influential public key encryption algorithm, and is generally considered as one of the best public key schemes. RSA is the first algorithm that can be used for both encryption and digit ...

Posted by nuttycoder on Tue, 23 Jul 2019 03:38:08 -0700

Organizational Approach of Microservice Infrastructure Components

brief introduction Micro is a micro-service framework implemented in go language, which realizes several common elements of services, such as gateway, proxy, registry, messaging, and also supports pluggable extension. This article explores how the project implements these components and organizes them to work together through a core object in m ...

Posted by RedMist on Sat, 20 Jul 2019 07:32:03 -0700

Android Media Codec Hard Decodes AAC Audio Files (Real-time AAC Audio Frames) and Plays

Today, I will briefly introduce how to use Android Media Codec to decode AAC audio files or real-time AAC audio frames and play them through AudioTrack. The main idea is to get the data of a frame of AAC from the file or network, and send it to the decoder for decoding and playing. Packaging AudioTrack AudioTrack is mainly used to play sou ...

Posted by neal.pressley on Fri, 28 Jun 2019 12:28:23 -0700