/// <summary> /// CopyOfStream /// </summary> /// <returns></returns> public Stream CopyOfStream() { var tempStream = new TempFileStream(); stream.Seek(0, SeekOrigin.Begin); stream.CopyTo(tempStream); tempStream.Seek(0, SeekOrigin.Begin); stream.Seek(0, SeekOrigin.Begin); return(tempStream); }
/// <summary> /// Constructor. /// </summary> /// <param name="part">The original part.</param> /// <param name="stream">Stream to send.</param> /// <param name="destinationUrl">Fully-qualified destination URL.</param> /// <param name="mimeType">The mimeType</param> /// <param name="order">The order of this item for sending.</param> public FileTransmissionItem(ITransmissionPart part, Stream stream, Uri destinationUrl, string mimeType, int order) { this.part = part; if (stream.CanSeek) { stream.Seek(0, SeekOrigin.Begin); } this.stream = new TempFileStream(); stream.CopyTo(this.stream); this.destinationUrl = destinationUrl; this.mimeType = mimeType; this.order = order; }
public unsafe void WriteMetadata(Stream stream, AudioMetadata metadata, SettingDictionary settings) { using (var tempStream = new TempFileStream()) { OggStream inputOggStream = null; OggStream outputOggStream = null; #if NETSTANDARD2_0 var buffer = ArrayPool <byte> .Shared.Rent(4096); #else Span <byte> buffer = stackalloc byte[4096]; #endif try { using (var sync = new OggSync()) { var headerWritten = false; OggPage page; var pagesWritten = 0u; do { // Read from the buffer into a page while (!sync.PageOut(out page)) { #if NETSTANDARD2_0 var bytesRead = stream.Read(buffer, 0, buffer.Length); #else var bytesRead = stream.Read(buffer); #endif if (bytesRead == 0) { throw new AudioInvalidException("No Ogg stream was found."); } var nativeBuffer = new Span <byte>(sync.Buffer(bytesRead).ToPointer(), bytesRead); #if NETSTANDARD2_0 buffer.AsSpan().Slice(0, bytesRead).CopyTo(nativeBuffer); #else buffer.Slice(0, bytesRead).CopyTo(nativeBuffer); #endif sync.Wrote(bytesRead); } if (inputOggStream == null) { inputOggStream = new OggStream(SafeNativeMethods.OggPageSerialNo(page)); } if (outputOggStream == null) { outputOggStream = new OggStream(inputOggStream.SerialNumber); } // Write new header page(s) using a modified comment packet if (!headerWritten) { inputOggStream.PageIn(page); while (inputOggStream.PacketOut(out var packet)) { switch (packet.PacketNumber) { case 0: outputOggStream.PacketIn(packet); break; // Substitute the new comment packet case 1: using (var adapter = new MetadataToOpusCommentAdapter(metadata)) { adapter.HeaderOut(out var commentPacket); outputOggStream.PacketIn(commentPacket); } headerWritten = true; break; default: throw new AudioInvalidException("Missing header packet."); } } // Flush at the end of each header while (outputOggStream.Flush(out var outPage)) { WritePage(outPage, tempStream); pagesWritten++; } } else { // Copy the existing data pages verbatim, with updated sequence numbers UpdateSequenceNumber(ref page, pagesWritten); WritePage(page, tempStream); pagesWritten++; } } while (!SafeNativeMethods.OggPageEos(page)); // Once the end of the input is reached, overwrite the original file and return stream.Position = 0; stream.SetLength(tempStream.Length); tempStream.Position = 0; tempStream.CopyTo(stream); } } finally { #if NETSTANDARD2_0 ArrayPool <byte> .Shared.Return(buffer); #endif inputOggStream?.Dispose(); outputOggStream?.Dispose(); } } }