performance - 如何更快地解码 JPEG 文件？

Question

Delphi 的默认 JPEG 库非常慢。如何提高其性能？我需要更快地保存和加载 jpeg 图像。

我只测试了 Jpeg.TJPEGImage

Answer 1

您可以使用 libJpeg 或 libJpegTurbo。后者绝对是非常快的。

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.
 */
}