Delphi快速JPEG库

Question

Delphi的JPEG库非常慢。如何提高其性能？我正在寻找一个快速的Jpeg库 - 更快地保存和加载jpeg图像。

我只测试了Jpeg.TJPEGImage

Answer 1

您可以使用libJpeg或libJpegTurbo。后者肯定非常快。

来自单位：

{
libJPEG Header conversion by Steffen Xonna. (21-03-2008)

http://www.dev-center.de/index.php?cat=header&file=libjpeg


Below you find an copy from the original libJPEG header.

/*
 * jpeglib.h
 *
 * Copyright (C) 1991-1998, Thomas G. Lane.
 * This file is part of the Independent JPEG Group's software.
 * For conditions of distribution and use, see the accompanying README file.
 *
 * This file defines the application interface for the JPEG library.
 * Most applications using the library need only include this file,
 * and perhaps jerror.h if they want to know the exact error codes.
 */
}

Answer 2

我们有一个JPEG解压缩器，每秒可以解压缩超过350万像素（如果在代码中重新启动标记，则超过700万像素）。每秒还提取超过3000个缩略图。这不包括将压缩代码读入内存的时间。请访问www.instantimage.com。同样非常可靠，并将解压缩许多JPEG图像，而Microsoft Windows软件则不会。