Hello everyone, I have another article. Recently, my colleagues were working on ecological service-related projects and needed to operate vector data, so I checked the relevant information. Today I will share with you how to use Python’s GDAL library to implement raster to feature and feature to raster ( Convert raster and vector to each […]
Tag: surf
Correspondence between SurfaceFlinger layers
Let’s first use a picture to see the corresponding relationship between layers between various parts. Next, we will analyze how the conversion is performed based on this diagram. Creation of Surface and Layer For the process of app creating Surface, please refer to “09 SurfaceFinger layer creation process” for the previous introduction and introduction. BufferStateLayer […]
10 Analyze SurfaceComposerClient submission transaction process
After using SurfaceComposerClient::createSurface to create a SurfaceControl, the SurfaceControl can create a Surface for drawing. But what if you want to configure Surface’s zorder, position and other attributes? Methods for configuring properties are provided in SurfaceComposerClient::Transaction. SurfaceComposerClient::Transaction::setXXX() For example, in “02 The Simplest SurfaceFlinger Application”, zorder is configured to be the largest, the display position […]
A brief analysis of the initialization process of SurfaceFlinger
Table of Contents SurfaceFlinger main function The general process of SurfaceFlinger’s init: Initialize EGL to retrieve EFL context CreateHWComposer Code part: Initialize non-virtual display Code part: EventThread::waitForEvent Rough process: ISurfaceComposer is used to define the Binder IPC interface for accessing SurfaceFlinger (the application’s DisplayEventReceiver sends a request to create an event connection to SurfaceFlinger through […]
3. Use MediaPlayer+SurfaceView to play video files
Use MediaPlayer + SurfaceView to play video files MediaPlayer is mainly used to play audio and does not provide an image output interface, so you need to use other components to display the images played by MediaPlayer. You can use SurfaceView to display it. Surface and SurfaceHolder | Android Open Source Project | Android Open […]
Highway surface image crack detection program
About the author: High-quality creator in the Java field, CSDN blog expert, CSDN content partner, Nuggets guest author, Alibaba Cloud blog expert, 51CTO guest author, many years of architect design experience, Tencent classroom resident lecturer Main contents: Java projects, Python projects, front-end projects, artificial intelligence and big data, resume templates, study materials, interview question bank, […]
Highway surface image crack detection program
Author Home Page: Programming Compass About the author: High-quality creator in the Java field, CSDN blog expert, CSDN content partner, Nuggets guest author, Alibaba Cloud blog expert, 51CTO guest author, many years of architect design experience, Tencent classroom resident lecturer Main contents: Java projects, Python projects, front-end projects, artificial intelligence and big data, resume templates, […]
How to interact with the HAL layer when Android SurfaceFlinger does Layer synthesis
Directory 0. The scope of the issues discussed in this article 1. Problem: Dilemma in choosing implementation method for SurfaceFlinger layer synthesis 1.1 From the perspective of OpenGL ES and HWC themselves 1.2 Judgment logic led by HWC 2. Specific implementation framework for interaction between SurfaceFlinger and HAL layer 2.1 SurfaceFlinger calls OpenGL ES process […]
Customized audio display in vue project, basic use of wavesurfer.js
Rendering: wavesurfer is a customizable audio waveform visualization built on top of the Audio API and HTML5 Canvas. Basic usage: <body> <script src=”//i2.wp.com/unpkg.com/wavesurfer.js”></script> <div id=”waveform”></div> <script> var wavesurfer = WaveSurfer.create({ container: ‘#waveform’, waveColor: ‘violet’, progressColor: ‘purple’ }); //Receive incoming audio wavesurfer.load(‘./test.mp3’); // event wavesurfer.on(‘ready’, function () { wavesurfer.play(); }); </script> </body> Commonly used parameters of […]
Global 30m impervious surface dynamic data set (GISD30)
Global 30m impervious surface dynamic data set (GISD30)? The Global 30 m Impervious Surface Dynamics Dataset (GISD30) provides a valuable resource for understanding the changing landscape of impervious surfaces worldwide from 1985 to 2020. This dataset has far-reaching scientific significance and practical applications in the fields of urban sustainable development, anthropogenic carbon emissions assessment, and […]