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C# IByteSource.GetBytes方法代码示例

本文整理汇总了C#中IByteSource.GetBytes方法的典型用法代码示例。如果您正苦于以下问题:C# IByteSource.GetBytes方法的具体用法?C# IByteSource.GetBytes怎么用?C# IByteSource.GetBytes使用的例子?那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在IByteSource的用法示例。


在下文中一共展示了IByteSource.GetBytes方法的6个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的C#代码示例。

示例1: ParseDataset

		private void ParseDataset(IByteSource source, object state) {
			try {
				_result = DicomReaderResult.Processing;

				while (!source.IsEOF && !source.HasReachedMilestone() && _result == DicomReaderResult.Processing) {
					if (_state == ParseState.Tag) {
						source.Mark();

						if (!source.Require(4, ParseDataset, state)) {
							_result = DicomReaderResult.Suspended;
							return;
						}

						ushort group = source.GetUInt16();
						ushort element = source.GetUInt16();
						DicomPrivateCreator creator = null;

						if (group.IsOdd() && element > 0x00ff) {
							string pvt = null;
							uint card = (uint)(group << 16) + (uint)(element >> 8);
							if (_private.TryGetValue(card, out pvt))
								creator = Dictionary.GetPrivateCreator(pvt);
						}

						_tag = new DicomTag(group, element, creator);

						if (_stop != null && _tag.CompareTo(_stop) >= 0) {
							_result = DicomReaderResult.Stopped;
							return;
						}

						_state = ParseState.VR;
					}

					while (_state == ParseState.VR) {
						if (_tag == DicomTag.Item || _tag == DicomTag.ItemDelimitationItem || _tag == DicomTag.SequenceDelimitationItem) {
							_vr = DicomVR.NONE;
							_state = ParseState.Length;
							break;
						}

						if (IsExplicitVR) {
							if (!source.Require(2, ParseDataset, state)) {
								_result = DicomReaderResult.Suspended;
								return;
							}

							byte[] bytes = source.GetBytes(2);
							string vr = Encoding.UTF8.GetString(bytes, 0, bytes.Length);
							try {
								_vr = DicomVR.Parse(vr);
							} catch {
								// unable to parse VR
								_vr = DicomVR.UN;
							}
						} else {
							DicomDictionaryEntry entry = Dictionary[_tag];
							if (entry != null) {
								if (entry == DicomDictionary.UnknownTag)
									_vr = DicomVR.UN;
								else if (entry.ValueRepresentations.Contains(DicomVR.OB) && entry.ValueRepresentations.Contains(DicomVR.OW))
									_vr = DicomVR.OW; // ???
								else
									_vr = entry.ValueRepresentations.FirstOrDefault();
							}
						}

						if (_vr == null)
							_vr = DicomVR.UN;

						_state = ParseState.Length;

						if (_vr == DicomVR.UN) {
							if (_tag.Element == 0x0000) {
								// Group Length to UL
								_vr = DicomVR.UL;
								break;
							} else if (IsExplicitVR) {
								break;
							}
						}

						if (_tag.IsPrivate) {
							if (_tag.Element != 0x0000 && _tag.Element <= 0x00ff && _vr == DicomVR.UN)
								_vr = DicomVR.LO; // force private creator to LO
						}
					}

					while (_state == ParseState.Length) {
						if (_tag == DicomTag.Item || _tag == DicomTag.ItemDelimitationItem || _tag == DicomTag.SequenceDelimitationItem) {
							if (!source.Require(4, ParseDataset, state)) {
								_result = DicomReaderResult.Suspended;
								return;
							}

							_length = source.GetUInt32();

							_state = ParseState.Value;
							break;
						}
//.........这里部分代码省略.........
开发者ID:peerct,项目名称:fo-dicom,代码行数:101,代码来源:DicomReader.cs

示例2: IsPrivateSequenceBad

		private bool IsPrivateSequenceBad(IByteSource source) {
			source.Mark();

			try {
				var group = source.GetUInt16();
				var element = source.GetUInt16();
				var tag = new DicomTag(group, element);
				var length = source.GetUInt32();

				group = source.GetUInt16();
				element = source.GetUInt16();
				tag = new DicomTag(group, element);

				byte[] bytes = source.GetBytes(2);
				string vr = Encoding.UTF8.GetString(bytes, 0, bytes.Length);
				try {
					DicomVR.Parse(vr);
					return !_explicit;
				} catch {
					// unable to parse VR
					if (_explicit)
						return true;
				}
			} finally {
				source.Rewind();
			}

			return false;
		}
开发者ID:peerct,项目名称:fo-dicom,代码行数:29,代码来源:DicomReader.cs

示例3: ParseVR

            private bool ParseVR(IByteSource source)
            {
                while (this.parseStage == ParseStage.VR)
                {
                    if (this._tag == DicomTag.Item || this._tag == DicomTag.ItemDelimitationItem
                        || this._tag == DicomTag.SequenceDelimitationItem)
                    {
                        this._vr = DicomVR.NONE;
                        this.parseStage = ParseStage.Length;
                        break;
                    }

                    if (this.isExplicitVR)
                    {
                        if (!source.Require(2))
                        {
                            this.result = DicomReaderResult.Suspended;
                            return false;
                        }

                        source.Mark();
                        var bytes = source.GetBytes(2);
                        var vr = Encoding.UTF8.GetString(bytes, 0, bytes.Length);

                        if (string.IsNullOrWhiteSpace(vr))
                        {
                            if (this._entry != null)
                            {
                                this._vr = this._entry.ValueRepresentations.FirstOrDefault();
                            }
                        }
                        else if (!DicomVR.TryParse(vr, out this._vr))
                        {
                            // unable to parse VR; rewind VR bytes for continued attempt to interpret the data.
                            this._vr = DicomVR.Implicit;
                            source.Rewind();
                        }
                    }
                    else
                    {
                        if (this._entry != null)
                        {
                            if (this._entry == DicomDictionary.UnknownTag)
                            {
                                this._vr = DicomVR.UN;
                            }
                            else if (this._entry.ValueRepresentations.Contains(DicomVR.OB)
                                     && this._entry.ValueRepresentations.Contains(DicomVR.OW))
                            {
                                this._vr = DicomVR.OW; // ???
                            }
                            else
                            {
                                this._vr = this._entry.ValueRepresentations.FirstOrDefault();
                            }
                        }
                    }

                    if (this._vr == null)
                    {
                        this._vr = DicomVR.UN;
                    }

                    this.parseStage = ParseStage.Length;

                    if (this._vr == DicomVR.UN)
                    {
                        if (this._tag.Element == 0x0000)
                        {
                            // Group Length to UL
                            this._vr = DicomVR.UL;
                            break;
                        }
                        if (this.isExplicitVR)
                        {
                            break;
                        }
                    }

                    if (this._tag.IsPrivate)
                    {
                        if (this._tag.Element != 0x0000 && this._tag.Element <= 0x00ff && this._vr == DicomVR.UN)
                        {
                            this._vr = DicomVR.LO; // force private creator to LO
                        }
                    }
                }
                return true;
            }
开发者ID:gustavosaita,项目名称:fo-dicom,代码行数:89,代码来源:DicomReader.cs

示例4: IsPrivateSequenceBad

            private static bool IsPrivateSequenceBad(IByteSource source, bool isExplicitVR)
            {
                source.Mark();

                try
                {
                    source.GetUInt16(); // group
                    source.GetUInt16(); // element
                    source.GetUInt32(); // length

                    source.GetUInt16(); // group
                    source.GetUInt16(); // element

                    var bytes = source.GetBytes(2);
                    var vr = Encoding.UTF8.GetString(bytes, 0, bytes.Length);
                    DicomVR dummy;
                    if (DicomVR.TryParse(vr, out dummy)) return !isExplicitVR;
                    // unable to parse VR
                    if (isExplicitVR) return true;
                }
                finally
                {
                    source.Rewind();
                }

                return false;
            }
开发者ID:gustavosaita,项目名称:fo-dicom,代码行数:27,代码来源:DicomReader.cs

示例5: Preprocess

        private static void Preprocess(
            IByteSource source,
            ref DicomFileFormat fileFormat,
            ref DicomTransferSyntax syntax)
        {
            // mark file origin
            source.Mark();

            // test for DICM preamble
            source.Skip(128);
            if (source.GetUInt8() == 'D' && source.GetUInt8() == 'I' && source.GetUInt8() == 'C'
                && source.GetUInt8() == 'M')
            {
                fileFormat = DicomFileFormat.DICOM3;
            }

            // test for incorrect syntax in file meta info
            do
            {
                if (fileFormat == DicomFileFormat.DICOM3)
                {
                    // move milestone to after preamble
                    source.Mark();
                }
                else
                {
                    // rewind to origin milestone
                    source.Rewind();
                }

                // test for file meta info
                var group = source.GetUInt16();

                if (@group > 0x00ff)
                {
                    source.Endian = Endian.Big;
                    syntax = DicomTransferSyntax.ExplicitVRBigEndian;

                    @group = Endian.Swap(@group);
                }

                if (@group > 0x00ff)
                {
                    // invalid starting tag
                    fileFormat = DicomFileFormat.Unknown;
                    source.Rewind();
                    break;
                }

                if (fileFormat == DicomFileFormat.Unknown)
                {
                    fileFormat = @group == 0x0002
                                     ? DicomFileFormat.DICOM3NoPreamble
                                     : DicomFileFormat.DICOM3NoFileMetaInfo;
                }

                var element = source.GetUInt16();
                var tag = new DicomTag(@group, element);

                // test for explicit VR
                var vrt = Encoding.UTF8.GetBytes(tag.DictionaryEntry.ValueRepresentations[0].Code);
                var vrs = source.GetBytes(2);

                if (vrt[0] != vrs[0] || vrt[1] != vrs[1])
                {
                    // implicit VR
                    syntax = syntax.Endian == Endian.Little
                                 ? DicomTransferSyntax.ImplicitVRLittleEndian
                                 : DicomTransferSyntax.ImplicitVRBigEndian;
                }

                source.Rewind();
            }
            while (fileFormat == DicomFileFormat.Unknown);

            if (fileFormat == DicomFileFormat.Unknown)
            {
                throw new DicomReaderException("Attempted to read invalid DICOM file");
            }

            // Adopt transfer syntax endianess to byte source.
            source.Endian = syntax.Endian;
        }
开发者ID:aerik,项目名称:fo-dicom,代码行数:83,代码来源:DicomFileReader.cs

示例6: IsPrivateSequenceBad

            private static bool IsPrivateSequenceBad(IByteSource source, bool isExplicitVR)
            {
                source.Mark();

                try
                {
                    // Skip "item" tags; continue skipping until length is non-zero (#223)
                    while (new DicomTag(source.GetUInt16(), source.GetUInt16()) == DicomTag.Item    // group, element
                           & source.GetUInt32() == 0)   // length (using & instead of && enforces RHS to be evaluated regardless of LHS)
                    {
                    }

                    source.GetUInt16(); // group
                    source.GetUInt16(); // element

                    var bytes = source.GetBytes(2);
                    var vr = Encoding.UTF8.GetString(bytes, 0, bytes.Length);
                    DicomVR dummy;
                    if (DicomVR.TryParse(vr, out dummy)) return !isExplicitVR;
                    // unable to parse VR
                    if (isExplicitVR) return true;
                }
                finally
                {
                    source.Rewind();
                }

                return false;
            }
开发者ID:aerik,项目名称:fo-dicom,代码行数:29,代码来源:DicomReader.cs


注:本文中的IByteSource.GetBytes方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台,相关代码片段筛选自各路编程大神贡献的开源项目,源码版权归原作者所有,传播和使用请参考对应项目的License;未经允许,请勿转载。