在Mono/Linux下使用FFmpeg.Autogen 4.1.0.2时找不到Kernel32
在Mono/Linux下使用FFmpeg.Autogen 4.1.0.2时找不到Kernel32
提问于 2019-03-29 03:00:00
当我发布这篇文章时，我提交了一份错误报告，我不知道我可以从堆栈跟踪中看到FFmpeg.Autogen。不管怎样，我在Github上发布了一个Bug报告
https://github.com/Ruslan-B/FFmpeg.AutoGen/issues/109
我正尝试在Linux中运行我的代码，它使用FFmpeg.Autogen与ffmpeg库进行交互。我得到的kernel32动态链接库找不到找不到原因。他说不要将问题发布到github上进行故障排除。可能的相关问题：https://github.com/Ruslan-B/FFmpeg.AutoGen/issues/89
我尝试的第一件事是包含示例代码中的二进制助手类，我对它进行了一些调整。添加了linux文件的确切路径。我做的第二件事是添加FFmpeg.AutoGen.dll.config，如果配置正确，它会尝试引用一个windows DLL，它应该指向linux DLL。堆栈跟踪：
System.DllNotFoundException: kernel32
at at (wrapper managed-to-native) FFmpeg.AutoGen.Native.WindowsNativeMethods.GetProcAddress(intptr,string)
at FFmpeg.AutoGen.Native.FunctionLoader.GetFunctionPointer (System.IntPtr nativeLibraryHandle, System.String functionName) [0x00000] in D:\FFmpeg.AutoGen\FFmpeg.AutoGen\Native\FunctionLoader.cs:55
at FFmpeg.AutoGen.Native.FunctionLoader.GetFunctionDelegate[T] (System.IntPtr nativeLibraryHandle, System.String functionName, System.Boolean throwOnError) [0x00000] in D:\FFmpeg.AutoGen\FFmpeg.AutoGen\Native\FunctionLoader.cs:28
at FFmpeg.AutoGen.ffmpeg.GetFunctionDelegate[T] (System.IntPtr libraryHandle, System.String functionName) [0x00000] in D:\FFmpeg.AutoGen\FFmpeg.AutoGen\FFmpeg.cs:50
at FFmpeg.AutoGen.ffmpeg+<>c.<.cctor>b__4_318 () [0x00000] in D:\FFmpeg.AutoGen\FFmpeg.AutoGen\FFmpeg.functions.export.g.cs:7163
at FFmpeg.AutoGen.ffmpeg.avformat_alloc_context () [0x00000] in D:\FFmpeg.AutoGen\FFmpeg.AutoGen\FFmpeg.functions.export.g.cs:7176
at FF8.FfccVaribleGroup..ctor () [0x0009c] in /home/robert/OpenVIII/FF8/FfccVaribleGroup.cs:53
at FF8.Ffcc..ctor (System.String filename, FFmpeg.AutoGen.AVMediaType mediatype, FF8.Ffcc+FfccMode mode) [0x00008] in /home/robert/OpenVIII/FF8/Ffcc.cs:31
at FF8.Module_movie_test.InitMovie () [0x00001] in /home/robert/OpenVIII/FF8/module_movie_test.cs:160
at FF8.Module_movie_test.Update () [0x000c5] in /home/robert/OpenVIII/FF8/module_movie_test.cs:88
at FF8.ModuleHandler.Update (Microsoft.Xna.Framework.GameTime gameTime) [0x000ac] in /home/robert/OpenVIII/FF8/ModuleHandler.cs:43
at FF8.Game1.Update (Microsoft.Xna.Framework.GameTime gameTime) [0x00030] in /home/robert/OpenVIII/FF8/Game1.cs:69
at Microsoft.Xna.Framework.Game.DoUpdate (Microsoft.Xna.Framework.GameTime gameTime) [0x00019] in <4fc8466c27384bb19c7b81b2a6a71083>:0
at Microsoft.Xna.Framework.Game.Tick () [0x00103] in <4fc8466c27384bb19c7b81b2a6a71083>:0
at Microsoft.Xna.Framework.SdlGamePlatform.RunLoop () [0x00021] in <4fc8466c27384bb19c7b81b2a6a71083>:0
at Microsoft.Xna.Framework.Game.Run (Microsoft.Xna.Framework.GameRunBehavior runBehavior) [0x0008b] in <4fc8466c27384bb19c7b81b2a6a71083>:0
at Microsoft.Xna.Framework.Game.Run () [0x0000c] in <4fc8466c27384bb19c7b81b2a6a71083>:0
at FF8.Program.Main () [0x00007] in /home/robert/OpenVIII/FF8/Program.cs:17我的代码触发了这个：
Format = ffmpeg.avformat_alloc_context();Binaryhelper应该为文件设置正确的路径
internal static void RegisterFFmpegBinaries()
{
var libraryPath = "";
switch (Environment.OSVersion.Platform)
{
case PlatformID.Win32NT:
case PlatformID.Win32S:
case PlatformID.Win32Windows:
var current = Environment.CurrentDirectory;
var probe = Path.Combine(Environment.Is64BitProcess ? "x64" : "x86");
while (current != null)
{
var ffmpegDirectory = Path.Combine(current, probe);
if (Directory.Exists(ffmpegDirectory))
{
Console.WriteLine($"FFmpeg binaries found in: {ffmpegDirectory}");
RegisterLibrariesSearchPath(ffmpegDirectory);
return;
}
current = Directory.GetParent(current)?.FullName;
}
break;
case PlatformID.Unix:
libraryPath = "/usr/lib/x86_64-linux-gnu";
RegisterLibrariesSearchPath(libraryPath);
break;
case PlatformID.MacOSX:
libraryPath = Environment.GetEnvironmentVariable(LD_LIBRARY_PATH);
RegisterLibrariesSearchPath(libraryPath);
break;
}
}The FFmpeg.Autogen.dll.config
<configuration>
<dllmap os="linux" dll="avutil-56.dll" target="/usr/lib/x86_64-linux-gnu/libavutil.so.56"/>
<dllmap os="linux" dll="avcodec-58.dll" target="/usr/lib/x86_64-linux-gnu/libavcodec.so.58"/>
<dllmap os="linux" dll="avformat-58.dll" target="/usr/lib/x86_64-linux-gnu/libavformat.so.58"/>
<dllmap os="linux" dll="avdevice-58.dll" target="/usr/lib/x86_64-linux-gnu/libavdevice.so.58"/>
<dllmap os="linux" dll="avfilter-7.dll" target="/usr/lib/x86_64-linux-gnu/libavfilter.so.7"/>
<dllmap os="linux" dll="avresample-4.dll" target="/usr/lib/x86_64-linux-gnu/libavresample.so.4"/>
<dllmap os="linux" dll="swscale-5.dll" target="/usr/lib/x86_64-linux-gnu/libswscale.so.5"/>
<dllmap os="linux" dll="swresample-3.dll" target="/usr/lib/x86_64-linux-gnu/libswresample.so.3"/>
<dllmap os="linux" dll="postproc-55.dll" target="/usr/lib/x86_64-linux-gnu/libpostproc.so.55"/>
</configuration>回答 1
Stack Overflow用户
回答已采纳
发布于 2019-03-29 05:38:37
https://github.com/Ruslan-B/FFmpeg.AutoGen/issues/109#issuecomment-477756443
鲁斯兰-B说他会修好的。
在应用修复后，我想我只是看不到视频，因为我使用的色彩空间在linux上是错误的，这是我的猜测。音频工作正常。
但是这个问题已经结束了。
Elgonzo在评论中帮助指出了正确的问题不是库无法加载。这是因为FFmpeg.Autogen使用了错误的纯windows函数。
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/55405051
复制相关文章
相似问题
腾讯云开发者
