可以';t用单声道压缩
本文关键字:声道 压缩 单声道 可以 | 更新日期: 2023-09-27 18:28:34
我正试图用mono压缩一些数据,如下所示:
public static string Save(FlightProgram program, bool compressed)
{
using (MemoryStream ms = new MemoryStream())
{
BinaryFormatter f = new BinaryFormatter();
if (compressed)
{
using (DeflateStream gz = new DeflateStream(ms, CompressionMode.Compress))
{
f.Serialize(gz, program);
}
}
else
{
f.Serialize(ms, program);
}
return Convert.ToBase64String(ms.ToArray()).Replace('/', '_');
}
}
我只是得到了一个异常"CreateZStream"。没有内部异常。这是怎么回事?
Stacktrace:
Could not save flight program: CreateZStream at at (wrapper managed-to-native) System.IO.Compression.DeflateStream:CreateZStream (System.IO.Compression.CompressionMode,bool,System.IO.Compression.DeflateStream/UnmanagedReadOrWrite,intptr)
at System.IO.Compression.DeflateStream..ctor (System.IO.Stream compressedStream, CompressionMode mode, Boolean leaveOpen, Boolean gzip) [0x00000] in <filename unknown>:0
at System.IO.Compression.DeflateStream..ctor (System.IO.Stream compressedStream, CompressionMode mode) [0x00000] in <filename unknown>:0
at KSPComputerModule.ProgramSerializer.Save (KSPComputer.FlightProgram program, Boolean compressed) [0x00000] in <filename unknown>:0
at KSPComputerModule.FPComputer.OnSave (.ConfigNode node) [0x00000] in <filename unknown>:0 (State: None)
肯定不再与OP相关。。。但我终于自己解决了这个问题。这是Mono for Windows部署中的一个错误。如果你从Mono/GtkSharp目录中删除MonoPosixHelper.dll
文件,你会发现它突然起作用了。运行Process Monitor时,您可以看到,它不再使用错误编译的MonoPosixHelper.dll
,而是使用libMonoPosixHelper.dll
。。。其被正确地编译。
因此,要永久解决,请删除所有MonoPosixHelper.dll文件,使其使用libMonoPosixMHelper.dll…或者,最好使用dllmap,添加
<dllmap dll="MonoPosixHelper" target="libMonoPosixHelper.dll" os="windows" />
到C:'Program Files (x86)'Mono'lib'mono'gac'System'4.0.0.0__b77a5c561934e089'System.dll.config
(如果它还不存在,则创建)或到C:'Program Files (x86)'Mono'etc'mono'config
的全局Mono配置
我自己测试过,得到了一个DllNotFoundException:
System.DllNotFoundException: MonoPosixHelper
at (wrapper managed-to-native) System.IO.Compression.DeflateStream:CreateZStream (System.IO.Compression.CompressionMode,bool,System.IO.Compression.DeflateStream/UnmanagedReadOrWrite,intptr)
at System.IO.Compression.DeflateStream..ctor (System.IO.Stream compressedStream, CompressionMode mode, Boolean leaveOpen, Boolean gzip) [0x00000] in <filename unknown>:0
at System.IO.Compression.DeflateStream..ctor (System.IO.Stream compressedStream, CompressionMode mode) [0x00000] in <filename unknown>:0
at (wrapper remoting-invoke-with-check) System.IO.Compression.DeflateStream:.ctor (System.IO.Stream,System.IO.Compression.CompressionMode)
原因似乎是CreateZStream函数,它是一个外部方法,应该在MonoPosixHelper.dll中定义。
CreateZStream被声明为
[DllImport("__Internal", CallingConvention = CallingConvention.Cdecl)]
private static extern IntPtr CreateZStream(CompressionMode compress, bool gzip, DeflateStream.UnmanagedReadOrWrite feeder, IntPtr data);
但是,文件"MonoPosixHelper.dll"不存在。有一个libMonoPosixHelper.dylib似乎实现了CreateZStream的入口点,但这是一个mac库。
就我个人而言,我对Unity中的大多数压缩代码/库都有不好的体验,因为大多数实现都只是包装一个本地代码库。根据兼容性页面,该类是受支持的,但看起来只实现了托管部分。这个似乎也证实了这一点。
我已经在很多项目中成功地使用了SharpZipLib库。它是一个纯托管库,没有本机代码依赖关系。我在单机版、网络版、安卓版和iOS版中使用过这个库,没有任何问题。