php - Imagick PHP 扩展无法输出 JPEG XR 图像

Question

我对 ImageMagick 有疑问。我搜索了很多，但没有找到解决方案。我的问题与输出到 JPEG XR 格式有关。我正在尝试在 Windows 10 和 Linux Debian 9 服务器上的 PHP 7.0/7.1 中执行此操作。

我的代码:

<?php

if (TRUE !== extension_loaded('imagick')) {
    throw new Exception('Imagick extension is not loaded.');
}

$image = new Imagick();
$image->newImage(100, 100, new ImagickPixel('red'));

// $image->setImageFormat('jpg'); // <-- It works 
$image->setImageFormat('jxr'); // <-- Fatal error: Uncaught ImagickException: UnableToOpenModuleFile

header("Content-Type: image/" . $image->getImageFormat());
echo $image;

$image->destroy(); 

Windows 上的 phpinfo() 结果:

Windows 应用:

C:\Users\Andrei>JxrDecApp.exe
JPEG XR Decoder Utility
Copyright 2013 Microsoft Corporation - All Rights Reserved
...

C:\Users\Andrei>JxrEncApp.exe
JPEG XR Encoder Utility
Copyright 2013 Microsoft Corporation - All Rights Reserved
...

JxrDecApp.exe 和 JxrEncApp.exe 可从任何目录获取!

Linux 上的 phpinfo() 结果:

Linux 软件包:

root@Server:~# dpkg-query -l | grep jxr
ii  libjxr-tools                    1.1-6+b1                       amd64        JPEG-XR lib - command line apps
ii  libjxr0:amd64                   1.1-6+b1                       amd64        JPEG-XR lib - libraries
root@Server:~# dpkg-query -l | grep imagick
ii  php-imagick                     3.4.3~rc2-2                    amd64        Provides a wrapper to the ImageMagick library

root@Server:~# JxrDecApp
JPEG XR Decoder Utility
Copyright 2013 Microsoft Corporation - All Rights Reserved
...
root@Server:~# JxrEncApp
JPEG XR Encoder Utility
Copyright 2013 Microsoft Corporation - All Rights Reserved
...

Windows 上的 fatal error :

Uncaught ImagickException: UnableToOpenModuleFile `C:\WINDOWS\system32\config\systemprofile\AppData\Local\ImageMagick\IM_MOD_RL_jxr_.dll': No such file or directory @ warning/module.c/GetMagickModulePath/830 in D:\www\temp\jxr\index.php on line 11

Linux 上的 fatal error :

Unable to set image format

维基 ImageMagick:

支持的图像格式:

JXR | RW | JPEG extended range | Requires the jxrlib delegate library. Put the JxrDecApp and JxrEncApp applications in your execution path. Read more this

变更日志:

2013-04-29 6.8.5-3 Cristy
Add DeleteImageArtifact() for jpeg:extent artifact (thanks to Jimmy Xie @ Microsoft).
Add support for JXR / WDP image format.

更新

echo $_SERVER['PATH']; 来自 Windows 上的 PHP:

c:\Program Files\ImageMagick-6.9.3-7-vc14-x64\bin\;C:\ProgramData\Oracle\Java\javapath;C:\Program Files (x86)\Intel\iCLS Client\;C:\Program Files\Intel\iCLS Client\;C:\Program Files\Microsoft MPI\Bin\;C:\Windows\System32;C:\Windows;C:\Windows\System32\wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Program Files (x86)\Microsoft SQL Server\130\Tools\Binn\;C:\Program Files\Microsoft SQL Server\130\Tools\Binn\;C:\Program Files (x86)\Microsoft SQL Server\130\DTS\Binn\;C:\Program Files\Microsoft SQL Server\130\DTS\Binn\;C:\Program Files\Microsoft SQL Server\Client SDK\ODBC\130\Tools\Binn\;C:\Program Files (x86)\Microsoft SQL Server\Client SDK\ODBC\130\Tools\Binn\;C:\Program Files (x86)\Microsoft SQL Server\140\Tools\Binn\;C:\Program Files (x86)\Microsoft SQL Server\140\DTS\Binn\;C:\Program Files (x86)\Microsoft SQL Server\140\Tools\Binn\ManagementStudio\;C:\Program Files\Git\cmd;C:\Program Files (x86)\GtkSharp\2.12\bin;C:\Program Files\Java\JDK18~1.0_1\bin;C:\Program Files\JetBrains\IntelliJ IDEA 2017.2.1\plugins\maven\lib\maven3\bin;C:\Program Files (x86)\Intel\Intel(R) Management Engine Components\DAL;C:\Program Files\Intel\Intel(R) Management Engine Components\DAL;C:\Program Files (x86)\Intel\Intel(R) Management Engine Components\IPT;C:\Program Files\Intel\Intel(R) Management Engine Components\IPT;C:\Program Files\nodejs\;C:\Program Files\JetBrains\IntelliJ IDEA 2017.2.1\bin\;C:\Program Files (x86)\Skype\Phone\;C:\WINDOWS\system32\config\systemprofile\AppData\Local\Microsoft\WindowsApps

目录:

C:\Users\Andrei>dir "c:\Program Files\ImageMagick-6.9.3-7-vc14-x64\bin\*jxr*"
11.11.2017  22:53           464 896 JXRDecApp.exe
11.11.2017  22:53           469 504 JXREncApp.exe

echo $_SERVER['PATH']; 来自 Linux 上的 PHP:

/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin

执行自:

root@Server:~# which JxrEncApp
/usr/bin/JxrEncApp
root@Server:~# which JxrDecApp
/usr/bin/JxrDecApp

问题:

如何添加对 JXR 图片格式的支持？

Answer 1

好消息! Imagick 支持 JXR 或 JPEG Extended Range 格式，但不是以您希望的方式支持。您当前尝试访问它的方式是通过使用字节数组。 Magick.NET(Imagick .NET 库)的维护者在 Github 上的一个已关闭问题中声明如下:

The format is supported but you will need to do some 'magick' to make it work. Reading JXR files will only work when you copy the file JXRDecApp.exe to your bin directory and read from a file on disk that has a .jxr extension. Reading from a byte array is not supported. It would be nice if the code of the jxrlib project (http://jxrlib.codeplex.com) could be part of ImageMagick. Maybe I should create an issue for this in the ImageMagick project. You will need to compile JXRDecApp.exe yourself because there are no binaries available.

因此支持 JXR 格式，但不是以您希望的方式应用它。但是，可以按照 StackOverflow 中所述通过命令行完成转换 here或者像这样。

convert input.jpg jxr:output.jpg

剩下的就是编写一个执行此命令的脚本来为您进行转换。确保您正确保护该脚本及其输入和输出。祝你好运!

来源:

• "Support JXR (JPEG extended range) format " - Github