rosywriter's Introduction
### RosyWriter ### =========================================================================== DESCRIPTION: RosyWriter demonstrates the use of the AV Foundation framework to capture, process, preview, and save video on iOS devices. When RosyWriter launches, it creates an AVCaptureSession with audio and video device inputs, and outputs for audio and video data. These outputs continuously supply frames of audio and video to the app, via the captureOutput:didOutputSampleBuffer:fromConnection: delegate method. The app applies a very simple processing step to each video frame. Specifically, it sets the green element of each pixel to zero, which gives the entire frame a purple tint. Audio frames are not processed. After a frame of video is processed, RosyWriter uses OpenGL ES 2 to display it on the screen. This step uses the CVOpenGLESTextureCache API, new in iOS 5, for enhanced performance. When the user chooses to record a movie, an AVAssetWriter is used to write the processed video and un-processed audio to a QuickTime movie file. =========================================================================== BUILD REQUIREMENTS: Xcode 4 or later; iPhone iOS SDK 5.0 or later. =========================================================================== RUNTIME REQUIREMENTS: iOS 5.0 or later. This app will not run on the iOS simulator. =========================================================================== CHANGES FROM PREVIOUS VERSIONS: Version 1.2 Corrected code for calculating the center of the preview view. Removed some unnecessary setNeedsDisplay calls. Version 1.1 First public release. =========================================================================== Copyright (C) 2011 Apple Inc. All rights reserved.
rosywriter's People
Recommend Projects
-
React
A declarative, efficient, and flexible JavaScript library for building user interfaces.
-
Vue.js
๐ Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.
-
Typescript
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
-
TensorFlow
An Open Source Machine Learning Framework for Everyone
-
Django
The Web framework for perfectionists with deadlines.
-
Laravel
A PHP framework for web artisans
-
D3
Bring data to life with SVG, Canvas and HTML. ๐๐๐
-
Recommend Topics
-
javascript
JavaScript (JS) is a lightweight interpreted programming language with first-class functions.
-
web
Some thing interesting about web. New door for the world.
-
server
A server is a program made to process requests and deliver data to clients.
-
Machine learning
Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.
-
Visualization
Some thing interesting about visualization, use data art
-
Game
Some thing interesting about game, make everyone happy.
Recommend Org
-
Facebook
We are working to build community through open source technology. NB: members must have two-factor auth.
-
Microsoft
Open source projects and samples from Microsoft.
-
Google
Google โค๏ธ Open Source for everyone.
-
Alibaba
Alibaba Open Source for everyone
-
D3
Data-Driven Documents codes.
-
Tencent
China tencent open source team.