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使用Mac OS X应用程序部署GStreamer框架的最佳方式？

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因此，1.0的GStreamer文档似乎......至少可以说 . GStreamer SDK有一些helpul tips，但不可思议的是它们不足 .

所以，这里完成了's what I' . 我在 /Library/GStreamer.Framework/ Build 了一个调用GStreamer的应用程序

我使用命令行工具构建 . 这是我可以构建这个应用程序的方式 only . 我无法使用XCode GUI .

我想将此应用程序提交到商店，但是为了这样做，我无法将其作为包提交（因此我可以捆绑GStreamer软件包安装程序），这意味着我必须将GStreamer.framework与我的应用程序捆绑在一起 .

在上面的GStreamer SDK文档中，您会注意到一个名为osxrelocator.py的工具 . 这很好，因为它将 /Library/GStreamer.Framework 的所有引用更改为 @executable_path/../Frameworks/GStreamer.framework/

但

不幸的是，所有GStreamer .dylib都有问题......您需要使用install_name_tool -id来更改其路径，因为install_name_tool -change不会更改自己的路径！

所以，例如使用otool：

$ otool -L Application.app/Contents/Frameworks/GStreamer.framework/Versions/1.0/lib/libgstreamer-1.0.0.dylib
Application.app/Contents/Frameworks/GStreamer.framework/Versions/1.0/lib/libgstreamer-1.0.0.dylib:
    Library/Frameworks/GStreamer.framework/Versions/1.0/lib/libgstreamer-1.0.0.dylib (compatibility version 402.0.0, current version 402.0.0)
    Library/Frameworks/Frameworks/GStreamer.framework/Versions/1.0/lib/libgobject-2.0.0.dylib (compatibility version 4001.0.0, current version 4001.0.0)
    Library/Frameworks/GStreamer.framework/Versions/1.0/lib/libffi.6.dylib (compatibility version 7.0.0, current version 7.1.0)
    Library/Frameworks/GStreamer.framework/Versions/1.0/lib/libgmodule-2.0.0.dylib (compatibility version 4001.0.0, current version 4001.0.0)
    Library/Frameworks/Frameworks/GStreamer.framework/Versions/1.0/lib/libglib-2.0.0.dylib (compatibility version 4001.0.0, current version 4001.0.0)
    Library/Frameworks/Frameworks/GStreamer.framework/Versions/1.0/lib/libintl.8.dylib (compatibility version 10.0.0, current version 10.2.0)
    Library/Frameworks/Frameworks/GStreamer.framework/Versions/1.0/lib/libiconv.2.dylib (compatibility version 8.0.0, current version 8.1.0)
    /usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 1197.1.1)
    /System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation (compatibility version 150.0.0, current version 855.14.0)

然后使用osxrelocator.py（调用install_name_tool -change）：

./osxrelocator.py Application.app/Contents/MacOS /Library/Frameworks/GStreamer.framework/Versions/Current/lib @executable_path/../Frameworks/GStreamer.framework/Versions/Current/lib -r

得到：

$ otool -L Application.app/Contents/Frameworks/GStreamer.framework/Versions/1.0/lib/libgstreamer-1.0.0.dylib
Application.app/Contents/Frameworks/GStreamer.framework/Versions/1.0/lib/libgstreamer-1.0.0.dylib:
    /Library/Frameworks/GStreamer.framework/Versions/1.0/lib/libgstreamer-1.0.0.dylib (compatibility version 402.0.0, current version 402.0.0)
    @executable_path/../Frameworks/GStreamer.framework/Versions/1.0/lib/libgobject-2.0.0.dylib (compatibility version 4001.0.0, current version 4001.0.0)
    @executable_path/../Frameworks/GStreamer.framework/Versions/1.0/lib/libffi.6.dylib (compatibility version 7.0.0, current version 7.1.0)
    @executable_path/../Frameworks/GStreamer.framework/Versions/1.0/lib/libgmodule-2.0.0.dylib (compatibility version 4001.0.0, current version 4001.0.0)
    @executable_path/../Frameworks/GStreamer.framework/Versions/1.0/lib/libglib-2.0.0.dylib (compatibility version 4001.0.0, current version 4001.0.0)
    @executable_path/../Frameworks/GStreamer.framework/Versions/1.0/lib/libintl.8.dylib (compatibility version 10.0.0, current version 10.2.0)
    @executable_path/../Frameworks/GStreamer.framework/Versions/1.0/lib/libiconv.2.dylib (compatibility version 8.0.0, current version 8.1.0)
    /usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 1197.1.1)
    /System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation (compatibility version 150.0.0, current version 855.14.0)

请注意.dylib引用自身的第一行？除非您调用install_name_tool -id，否则不会更改为@executable_path /../ Frameworks / GStreamer.framework / . 这种情况发生在GStreamer框架中的每个.dylib！有数百个，我敢肯定手动这样做肯定会导致错误 .

希望我已经明确了我的问题 . 有没有人对如何做有任何建议？

谢谢！

macos app-store gstreamer dylib install-name-tool

1 回答

  • 1

    我创建了一个简单的Xcode项目来向您展示如何捆绑框架：https://github.com/corrosion/gstreamer-osx-bundle.git

    对于库重定位使用：https://github.com/tito/osxrelocator

    使用XCode构建项目的设置：

    • 安装gstreamer-1.0-1.5.2-x86_64.pkg

    • 安装gstreamer-1.0-devel-1.5.2-x86_64.pkg

    • 将/Library/Frameworks/GStreamer.framework移至$（PROJECT_DIR）/GStreamer-devel.framework

    • 转到$（PROJECT_DIR）并运行以下命令：

    • osxrelocator ./GStreamer-devel.framework/Versions/Current /Library/Frameworks/GStreamer.framework/ pwd /GStreamer-devel.framework/

    • install_name_tool -id @executable_path/../Frameworks/GStreamer.framework/GStreamer ./GStreamer-devel.framework/Versions/Current/GStreamer

    • 将"$(PROJECT_DIR)/GStreamer-devel.framework/Headers"添加到 Headers 搜索路径

    • 将"GStreamer-devel.framework/GStreamer"文件添加到Xcode项目中

    准备运行时框架：

    • 安装gstreamer-1.0-1.5.2-x86_64.pkg

    • 将/Library/Frameworks/GStreamer.framework移至$（PROJECT_DIR）/GStreamer.framework

    • 做一些框架的清理：

    • rm ./GStreamer.framework/Headers ./GStreamer.framework/Commands

    • rm ./GStreamer.framework/Versions/Current/Commands

    • rm -r ./GStreamer.framework/Versions/Current/bin/

    • rm -r ./GStreamer.framework/Versions/Current/etc/

    • rm -r ./GStreamer.framework/Versions/Current/share/

    • 重新定位框架的.dylibs：

    • osxrelocator -r ./GStreamer.framework/Versions/Current /Library/Frameworks/GStreamer.framework/ @executable_path/../Frameworks/GStreamer.framework/

    • 由于在gst_init期间执行了gst-plugin-scanner，因此它必须能够找到所有库 . 因此，在libexec目录中创建指向"Frameworks"的链接以解析@executable_path /../ Frameworks / GStreamer.framework /

    • ln -sf ../../../../ GStreamer.framework/Versions/Current/libexec/Frameworks

    • 在项目的Build Phases设置中，创建新的Copy Files Phase并将GStreamer.framework复制到Fameworks

    在调用gst_init（）之前，在代码中设置GST_PLUGIN_SCANNER和GST_PLUGIN_SYSTEM_PATH环境变量：

    // Setup GSTreamer environment
NSString *frameworksPath = [[NSBundle mainBundle] privateFrameworksPath];
NSString *scannerPath = [NSString stringWithFormat:@"%@/%s", frameworksPath,
                         "GStreamer.framework/Versions/1.0/libexec/gstreamer-1.0/gst-plugin-scanner"];
NSString *pluginsPath = [NSString stringWithFormat:@"%@/%s", frameworksPath,
                         "GStreamer.framework/Versions/1.0/lib"];
setenv("GST_PLUGIN_SCANNER", [scannerPath UTF8String], 1);
setenv("GST_PLUGIN_SYSTEM_PATH", [pluginsPath UTF8String], 1);

// Initialize GStreamer
gst_init(&argc, (char ***) &argv);
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