CGImageDestination Reference

CGImageDestination用于将照片写入到用户的磁盘中，在写入前可修改元数据。

1 Creating Image Destinations

/// 通过Quartz生成CGImageDestination
@available(iOS 4.0, *)
public func CGImageDestinationCreateWithDataConsumer(consumer: CGDataConsumer, _ type: CFString, _ count: Int, _ options: CFDictionary?) -> CGImageDestination?

/// 通过元数据生成CGImageDestination
@available(iOS 4.0, *)
public func CGImageDestinationCreateWithData(data: CFMutableData, _ type: CFString, _ count: Int, _ options: CFDictionary?) -> CGImageDestination?

/// 通过路径生成CGImageDestination
@available(iOS 4.0, *)
public func CGImageDestinationCreateWithURL(url: CFURL, _ type: CFString, _ count: Int, _ options: CFDictionary?) -> CGImageDestination?

2 Adding Images

/// 增加照片
@available(iOS 4.0, *)
public func CGImageDestinationAddImage(idst: CGImageDestination, _ image: CGImage, _ properties: CFDictionary?)

/// 增加照片到指定的位置，并设置相关属性
@available(iOS 4.0, *)
public func CGImageDestinationAddImageFromSource(idst: CGImageDestination, _ isrc: CGImageSource, _ index: Int, _ properties: CFDictionary?)

/// 增加照片
@available(iOS 7.0, *)
public func CGImageDestinationAddImageAndMetadata(idst: CGImageDestination, _ image: CGImage, _ metadata: CGImageMetadata?, _ options: CFDictionary?)

/// 替换要写入的数据源
@available(iOS 7.0, *)
public func CGImageDestinationCopyImageSource(idst: CGImageDestination, _ isrc: CGImageSource, _ options: CFDictionary?, _ err: UnsafeMutablePointer<Unmanaged<CFError>?>) -> Bool

3 Getting Type Identifiers

/// 获取唯一标示符
@available(iOS 4.0, *)
public func CGImageDestinationGetTypeID() -> CFTypeID

/// 获取类型数组
@available(iOS 4.0, *)
public func CGImageDestinationCopyTypeIdentifiers() -> CFArray

4 Setting Properties

/// 设置属性
@available(iOS 4.0, *)
public func CGImageDestinationSetProperties(idst: CGImageDestination, _ properties: CFDictionary?)

5 Finalizing an Image Destination

/// 写入照片
@available(iOS 4.0, *)
public func CGImageDestinationFinalize(idst: CGImageDestination) -> Bool

 

Appendix

Sample Code

Swift

Related Documentation

CGImageDestination Reference

Revision History

时间	描述
2016-01-15	博文完成

Copyright

CSDN：http://blog.csdn.net/y550918116j

GitHub：https://github.com/937447974/Blog