/// <summary>
/// 创建资源
/// </summary>
/// <param name="filename"></param>
/// <param name="imageFileName"></param>
/// <param name="videoFileName"></param>
/// <returns></returns>
public static async Task MergeAsync(string OutputFileame, string Password, string videoFileName)
{
//构建头部
string extension = System.IO.Path.GetExtension(OutputFileame);
OutputFileame = OutputFileame.Replace(extension, "加密" + extension);
string Header = "@#$%#$^E$@$" + Password;
var protect = new ProtectInfomat()
{
PassWord = Header.PadRight(1024, '\0').ToBytes(),
};
//压缩头部
var headerBytes = await CompressAsync(StructToBytes(protect));
var headerSizeBytes = BitConverter.GetBytes(headerBytes.Length);
//构建信息
var fileInformatSize = Marshal.SizeOf(typeof(FileStruct));
var videoInfo = new FileInfo(videoFileName);
//更新位置信息
var Offset = 4 + headerBytes.Length + fileInformatSize;
using (var stream = File.OpenWrite(OutputFileame))
{
//将头部写入流
await stream.WriteAsync(headerSizeBytes, 0, 4);
await stream.WriteAsync(headerBytes, 0, headerBytes.Length);
//获取流开始位置及大小
var PosInformat = new FileStruct
{
OffsetBytes = BitConverter.GetBytes((long)Offset),
LengthBytes = BitConverter.GetBytes(videoInfo.Length)
};
//分配空间
var imageInformatBytes = StructToBytes(PosInformat);
await stream.WriteAsync(imageInformatBytes, 0, imageInformatBytes.Length);
using (var videoStream = videoInfo.Open(FileMode.Open))
{
await videoStream.CopyToAsync(stream);
}
}
}
//public static long MaterialId(this ProtectInfomat infomat)
//{
// return BitConverter.ToInt64(infomat.MaterialIdBytes, 0);
//}
public static string PassWord(this ProtectInfomat infomat)
{
return(infomat.PassWord.ToStr());
}
public static string Descript(this ProtectInfomat infomat)
{
return(infomat.DescriptBytes.ToStr());
}
public static string UserId(this ProtectInfomat infomat)
{
return(infomat.UserIdBytes.ToStr());
}
public static string TypeName(this ProtectInfomat infomat)
{
return(infomat.TypeNameBytes.ToStr());
}
public static long MaterialId(this ProtectInfomat infomat)
{
return(BitConverter.ToInt64(infomat.MaterialIdBytes, 0));
}
public static async Task <string> BuilderProtectAsync(
string folder, string descript, string userId, string typename,
long materialId)
{
var protect = new ProtectInfomat()
{
DescriptBytes = descript.PadRight(30, '\0').ToBytes(),
UserIdBytes = userId.PadRight(80, '\0').ToBytes(),
TypeNameBytes = typename.PadRight(10, '\0').ToBytes(),
MaterialIdBytes = longToBytes(materialId)
};
var headerBytes = await CompressAsync(StructToBytes(protect));
var headerSizeBytes = BitConverter.GetBytes(headerBytes.Length);
var fileInformatSize = Marshal.SizeOf(typeof(FileInformat));
var imageInfo = new FileInfo($"{folder}\\Image.png");
var videoInfo = new FileInfo($"{folder}\\Video.dat");
var imageOffset = 4 + headerBytes.Length + fileInformatSize * 2;
var videoOffset = imageOffset + imageInfo.Length;
var builderFilename = $"{folder}\\Protect";
using (var stream = File.OpenWrite(builderFilename))
{
await stream.WriteAsync(headerSizeBytes, 0, 4);
await stream.WriteAsync(headerBytes, 0, headerBytes.Length);
var imageInformat = new FileStruct
{
OffsetBytes = BitConverter.GetBytes((long)imageOffset),
LengthBytes = BitConverter.GetBytes((long)imageInfo.Length)
};
var imageInformatBytes = StructToBytes(imageInformat);
await stream.WriteAsync(imageInformatBytes, 0, imageInformatBytes.Length);
var videoInformat = new FileStruct
{
OffsetBytes = BitConverter.GetBytes((long)videoOffset),
LengthBytes = BitConverter.GetBytes((long)videoInfo.Length)
};
var videoInformatBytes = StructToBytes(videoInformat);
await stream.WriteAsync(videoInformatBytes, 0, videoInformatBytes.Length);
using (var imageStream = imageInfo.Open(FileMode.Open))
{
await imageStream.CopyToAsync(stream);
}
using (var videoStream = videoInfo.Open(FileMode.Open))
{
await videoStream.CopyToAsync(stream);
}
}
return(builderFilename);
}
/// <summary>
/// 创建资源
/// </summary>
/// <param name="filename"></param>
/// <param name="imageFileName"></param>
/// <param name="videoFileName"></param>
/// <param name="informat"></param>
/// <returns></returns>
public static async Task MergeAsync(string filename, string imageFileName, string videoFileName, FileInformat informat)
{
//构建头部
var protect = new ProtectInfomat()
{
DescriptBytes = informat.DescriptBytes,
UserIdBytes = informat.UserIdBytes,
TypeNameBytes = informat.TypeNameBytes,
// MaterialIdBytes = longToBytes(informat.MaterialIdBytes)
};
//压缩头部
var headerBytes = await CompressAsync(StructToBytes(protect));
var headerSizeBytes = BitConverter.GetBytes(headerBytes.Length);
//构建图片流信息
var fileInformatSize = Marshal.SizeOf(typeof(FileStruct));
var imageInfo = new FileInfo(imageFileName);
var videoInfo = new FileInfo(videoFileName);
//更新 位置信息
var imageOffset = 4 + headerBytes.Length + fileInformatSize * 2;
var videoOffset = imageOffset + imageInfo.Length;
using (var stream = File.OpenWrite(filename))
{
//将头部写入流
await stream.WriteAsync(headerSizeBytes, 0, 4);
await stream.WriteAsync(headerBytes, 0, headerBytes.Length);
//分析图片流位置及大小
var imageInformat = new FileStruct
{
OffsetBytes = BitConverter.GetBytes((long)imageOffset),
LengthBytes = BitConverter.GetBytes(imageInfo.Length)
};
//为图片流分配空间
var imageInformatBytes = StructToBytes(imageInformat);
await stream.WriteAsync(imageInformatBytes, 0, imageInformatBytes.Length);
//分析视频流位置及大小
var videoInformat = new FileStruct
{
OffsetBytes = BitConverter.GetBytes((long)videoOffset),
LengthBytes = BitConverter.GetBytes(videoInfo.Length)
};
//为视频流分配空间
var videoInformatBytes = StructToBytes(videoInformat);
await stream.WriteAsync(videoInformatBytes, 0, videoInformatBytes.Length);
#region 往分配的空间中写入流
using (var imageStream = imageInfo.Open(FileMode.Open))
{
await imageStream.CopyToAsync(stream);
}
using (var videoStream = videoInfo.Open(FileMode.Open))
{
await videoStream.CopyToAsync(stream);
}
#endregion
}
}
