<FSImageCompressionCallback>协议 参考

继承自 <NSObject> .

构造函数
(id< FSFileStreamCallback >)	- GetTemporaryFileStream:
	Get temporary file stream. The file stream is used for saving the encoding result of JPEG2000 and JBIG2 temporarily. 更多...
(void)	- release
	A callback function used to release current callback object itself. 更多...

详细描述

This class represent a callback object used during the process to optimizie PDF document. All the pure virtual functions in this class are used as callback functions and should be implemented by user.

函数文档

GetTemporaryFileStream:()

- (id<FSFileStreamCallback>) GetTemporaryFileStream: (FSBitmap *)  bitmap

required

Get temporary file stream. The file stream is used for saving the encoding result of JPEG2000 and JBIG2 temporarily.

参数

[in]

bitmap

A bitmap object need to be encoded.

返回

A common::file::StreamCallback object which is implemented by user. This callback would be used to save image data. Callback fucntion common::file::StreamCallback::Release of returned callback object will be called by Foxit PDF SDK, when Foxit PDF SDK does not need to use returned callback object anymore.

release()

- (void) release

required

A callback function used to release current callback object itself.

返回

None.