private static void CreateFrameSection(byte[] buffer, int bufferStartIndex, FrameWithoutDelta frame, int frameIndex, int sectionIndex, int instructionStartIndex, int numberOfInstructions) { FrameSectionPackage package = new FrameSectionPackage(); package.FrameSequenceIndex = frameIndex; package.Index = sectionIndex; package.pixelInstructions = new List <PixelInstruction>(); for (int i = instructionStartIndex; i < instructionStartIndex + numberOfInstructions; i++) { package.pixelInstructions.Add(frame[i]); } FrameSectionProtocol.Serialize(package, buffer, bufferStartIndex); }
/// <summary> /// Deserialize a package /// </summary> /// <param name="buffer"></param> /// <returns>True if the frame has been deserialized, False if not all packages have been received.</returns> public bool TryDeserialize(byte[] bytes, out FrameWithoutDelta frame) { frame = null; if (_frameSectionPackages == null) { // First package. // Read Frame header int startIndex = 0; _frameIndex = BitConverter.ToInt32(bytes, startIndex); _timeStampRelative = BitConverter.ToInt32(bytes, startIndex += 4); int itemCount = BitConverter.ToInt32(bytes, startIndex += 4); bool hasFrameSections = BitConverter.ToBoolean(bytes, startIndex += 4); startIndex += 1; if (hasFrameSections) { _frameSectionPackages = new FrameSectionPackage[itemCount]; _frameSectionsReceived = new bool[itemCount]; _frameSectionsReceived[0] = true; // The rest of the package is a FrameSection _frameSectionPackages[0] = FrameSectionProtocol.Deserialize(bytes, startIndex); return(false); } else { frame = new FrameWithoutDelta(_frameIndex, _timeStampRelative, itemCount); // The rest of the package contains PixelInstructions for (int i = 0; i < itemCount; i++) { int instructionStartIndex = startIndex + i * PixelInstructionProtocol.BYTES_NEEDED; frame[i] = PixelInstructionProtocol.Deserialize(bytes, instructionStartIndex); } return(true); } } else { // Subsequent package. Always starts with a FrameSection. FrameSectionPackage package = FrameSectionProtocol.Deserialize(bytes, 0); if (package.FrameSequenceIndex != _frameIndex) { throw new System.Net.ProtocolViolationException( $"The frameIndex of the frameSection does not match with the Frame's index. Expected :{_frameIndex}, Received: {package.FrameSequenceIndex}"); } _frameSectionPackages[package.Index] = package; _frameSectionsReceived[package.Index] = true; if (_frameSectionsReceived.All(x => x)) { // TODO add totalNumberOfPixelInstructions to frame header int totalPixelInstructions = _frameSectionPackages.Sum(x => x.NumberOfPixelInstructions); frame = new FrameWithoutDelta(_frameIndex, _timeStampRelative, totalPixelInstructions); int index = 0; for (int i = 0; i < _frameSectionPackages.Length; i++) { for (int j = 0; j < _frameSectionPackages[i].NumberOfPixelInstructions; j++) { frame[index++] = _frameSectionPackages[i].pixelInstructions[j]; } } return(true); } return(false); } }