/// <summary>
/// Creates an instance of the Mp3Stream class by passing in a Stream object containing the
/// MP3 data.
/// </summary>
/// <param name="stream">The Stream object containing the MP3 data.</param>
/// <param name="permissions">The permissions applicable to the MP3 data. Defaults to read-only access.</param>
public Mp3Stream(Stream stream, Mp3Permissions permissions = Mp3Permissions.Read)
{
SetupStream(stream, permissions);
//The stream is owned by the caller, so it is their responsibility to dispose it.
StreamOwned = false;
}
public Mp3File(FileInfo fileInfo, Mp3Permissions permissions = Mp3Permissions.Read)
{
if (fileInfo == null)
{
throw new ArgumentNullException("fileInfo");
}
FileAccess fileAccess = PermissionsToFileAccessMapping[permissions];
FileStream fileStream = fileInfo.Open(FileMode.Open, fileAccess, FileShare.Read);
SetupStream(fileStream, permissions);
//Since we created the stream, we are responsible for disposing it when we're done
StreamOwned = true;
}
/// <summary>
/// Creates an instance of the Mp3Stream class by passing in the MP3 data as a byte array.
/// </summary>
/// <param name="byteStream">The byte array representing the MP3 data.</param>
/// <param name="permissions">The permissions applicable to the MP3 data. Defaults to read-only access.</param>
public Mp3Stream(byte[] byteStream, Mp3Permissions permissions = Mp3Permissions.Read)
{
if (byteStream == null)
{
throw new ArgumentNullException("byteStream");
}
//Note: For Write permissions, we cannot use the MemoryStream ctor that takes the byte
//array as a parameter. Those streams cannot increase their capacity using the SetLength
//method, which is needed by the framework when adding tag information to the stream.
var stream = new MemoryStream(byteStream.Length);
stream.Write(byteStream, 0, byteStream.Length);
SetupStream(stream, permissions);
}
protected void SetupStream(Stream stream, Mp3Permissions permissions)
{
if (stream == null)
{
throw new ArgumentNullException("stream");
}
if (permissions == Mp3Permissions.Write)
{
permissions = Mp3Permissions.ReadWrite;
}
if (!stream.CanRead || !stream.CanSeek)
{
throw new Id3Exception(Id3Messages.StreamNotReadableOrSeekable);
}
if (permissions == Mp3Permissions.ReadWrite && !stream.CanWrite)
{
throw new Id3Exception(Id3Messages.StreamNotWritable);
}
Stream = stream;
_permissions = permissions;
}
public Mp3FileStub(string file, Mp3Permissions mp3Permissions)
{
}
