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@@ -0,0 +1,411 @@
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//
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// File.cs: Provides tagging and properties support for the DSD (Direct Stream Digital) DSF
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// file Format.
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//
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// Author:
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// Helmut Wahrmann
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//
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// Copyright (C) 2014 Helmut Wahrmann
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//
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// This library is free software; you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License version
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// 2.1 as published by the Free Software Foundation.
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//
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// This library is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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// USA
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//
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using System;
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using TagLib.Id3v2;
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namespace TagLib.Dsf
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{
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/// <summary>
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/// This class extends <see cref="TagLib.File" /> to provide
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/// support for reading and writing tags and properties for files
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/// using the AIFF file format.
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/// </summary>
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[SupportedMimeType ("taglib/dsf", "dsf")]
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[SupportedMimeType ("audio/x-dsf")]
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[SupportedMimeType ("audio/dsf")]
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[SupportedMimeType ("sound/dsf")]
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[SupportedMimeType ("application/x-dsf")]
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public class File : TagLib.File
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{
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#region Private Fields
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/// <summary>
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/// Contains the address of the DSF header block.
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/// </summary>
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ByteVector header_block;
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/// <summary>
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/// Contains the Id3v2 tag.
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/// </summary>
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Id3v2.Tag tag;
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/// <summary>
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/// Contains the media properties.
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/// </summary>
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Properties properties;
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/// <summary>
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/// Contains the size of the DSF File
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/// </summary>
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readonly uint dsf_size;
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/// <summary>
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/// Contains the start position of the Tag
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/// </summary>
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long tag_start;
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/// <summary>
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/// Contains the end position of the Tag
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/// </summary>
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long tag_end;
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#endregion
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#region Public Static Fields
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/// <summary>
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/// The identifier used to recognize a DSF file.
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/// </summary>
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/// <value>
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/// "DSD "
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/// </value>
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public static readonly ReadOnlyByteVector FileIdentifier = "DSD ";
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/// <summary>
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/// The identifier used to recognize a Format chunk.
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/// </summary>
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/// <value>
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/// "fmt "
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/// </value>
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public static readonly ReadOnlyByteVector FormatIdentifier = "fmt ";
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/// <summary>
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/// The identifier used to recognize a DSF ID3 chunk.
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/// </summary>
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/// <value>
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/// "ID3 "
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/// </value>
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public static readonly ReadOnlyByteVector ID3Identifier = "ID3";
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#endregion
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#region Public Constructors
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/// <summary>
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/// Constructs and initializes a new instance of <see
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/// cref="File" /> for a specified path in the local file
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/// system and specified read style.
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/// </summary>
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/// <param name="path">
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/// A <see cref="string" /> object containing the path of the
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/// file to use in the new instance.
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/// </param>
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/// <param name="propertiesStyle">
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/// A <see cref="ReadStyle" /> value specifying at what level
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/// of accuracy to read the media properties, or <see
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/// cref="ReadStyle.None" /> to ignore the properties.
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/// </param>
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/// <exception cref="ArgumentNullException">
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/// <paramref name="path" /> is <see langword="null" />.
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/// </exception>
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public File (string path, ReadStyle propertiesStyle)
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: this (new LocalFileAbstraction (path), propertiesStyle)
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{
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}
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/// <summary>
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/// Constructs and initializes a new instance of <see
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/// cref="File" /> for a specified path in the local file
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/// system with an average read style.
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/// </summary>
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/// <param name="path">
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/// A <see cref="string" /> object containing the path of the
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/// file to use in the new instance.
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/// </param>
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/// <exception cref="ArgumentNullException">
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/// <paramref name="path" /> is <see langword="null" />.
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/// </exception>
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public File (string path) : this (path, ReadStyle.Average)
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{
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}
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/// <summary>
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/// Constructs and initializes a new instance of <see
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/// cref="File" /> for a specified file abstraction and
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/// specified read style.
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/// </summary>
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/// <param name="abstraction">
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/// A <see cref="TagLib.File.IFileAbstraction" /> object to use when
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/// reading from and writing to the file.
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/// </param>
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/// <param name="propertiesStyle">
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/// A <see cref="ReadStyle" /> value specifying at what level
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/// of accuracy to read the media properties, or <see
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/// cref="ReadStyle.None" /> to ignore the properties.
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/// </param>
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/// <exception cref="ArgumentNullException">
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/// <paramref name="abstraction" /> is <see langword="null"
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/// />.
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/// </exception>
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public File (IFileAbstraction abstraction, ReadStyle propertiesStyle)
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: base (abstraction)
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{
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Mode = AccessMode.Read;
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try {
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Read (true, propertiesStyle, out dsf_size, out tag_start, out tag_end);
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} finally {
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Mode = AccessMode.Closed;
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}
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TagTypesOnDisk = TagTypes;
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GetTag (TagTypes.Id3v2, true);
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}
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/// <summary>
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/// Constructs and initializes a new instance of <see
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/// cref="File" /> for a specified file abstraction with an
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/// average read style.
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/// </summary>
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/// <param name="abstraction">
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/// A <see cref="TagLib.File.IFileAbstraction" /> object to use when
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/// reading from and writing to the file.
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/// </param>
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/// <exception cref="ArgumentNullException">
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/// <paramref name="abstraction" /> is <see langword="null"
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/// />.
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/// </exception>
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public File (IFileAbstraction abstraction)
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: this (abstraction, ReadStyle.Average)
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{
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}
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#endregion
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#region Public Properties
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/// <summary>
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/// Gets a abstract representation of all tags stored in the
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/// current instance.
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/// </summary>
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/// <value>
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/// A <see cref="TagLib.Tag" /> object representing all tags
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/// stored in the current instance.
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/// </value>
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public override Tag Tag {
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get { return tag; }
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}
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/// <summary>
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/// Gets the media properties of the file represented by the
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/// current instance.
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/// </summary>
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/// <value>
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/// A <see cref="TagLib.Properties" /> object containing the
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/// media properties of the file represented by the current
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/// instance.
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/// </value>
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public override Properties Properties {
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get { return properties; }
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}
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#endregion
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#region Public Methods
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/// <summary>
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/// Saves the changes made in the current instance to the
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/// file it represents.
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/// </summary>
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public override void Save ()
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{
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// Boilerplate
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PreSave ();
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Mode = AccessMode.Write;
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try {
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long original_tag_length = tag_end - tag_start;
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ByteVector data = new ByteVector ();
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if (tag == null) {
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// The tag has been removed
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RemoveBlock (tag_start, original_tag_length);
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Insert (ByteVector.FromULong (0, false), 20, 8);
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} else {
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data = tag.Render ();
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// If tagging info cannot be found, place it at
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// the end of the file.
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if (tag_start == 0 || tag_end < tag_start) {
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tag_start = tag_end = Length;
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// Update the New Tag start
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Insert (ByteVector.FromULong ((ulong)(tag_start), false), 20, 8);
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}
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// Insert the tagging data.
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Insert (data, tag_start, data.Count);
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}
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long length = dsf_size + data.Count - original_tag_length;
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// If the data size changed update the dsf size.
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if (data.Count - original_tag_length != 0 && tag_start <= dsf_size) {
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Insert (ByteVector.FromULong ((ulong)(length), false), 12, 8);
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}
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// Update the tag types.
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TagTypesOnDisk = TagTypes;
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} finally {
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Mode = AccessMode.Closed;
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}
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}
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/// <summary>
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/// Removes a set of tag types from the current instance.
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/// </summary>
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/// <param name="types">
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/// A bitwise combined <see cref="TagLib.TagTypes" /> value
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/// containing tag types to be removed from the file.
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/// </param>
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/// <remarks>
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/// In order to remove all tags from a file, pass <see
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/// cref="TagTypes.AllTags" /> as <paramref name="types" />.
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/// </remarks>
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public override void RemoveTags (TagTypes types)
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{
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if (types == TagTypes.Id3v2 ||
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types == TagTypes.AllTags) {
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tag = null;
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}
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}
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/// <summary>
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/// Gets a tag of a specified type from the current instance,
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/// optionally creating a new tag if possible.
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/// </summary>
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/// <param name="type">
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/// A <see cref="TagLib.TagTypes" /> value indicating the
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/// type of tag to read.
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/// </param>
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/// <param name="create">
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/// A <see cref="bool" /> value specifying whether or not to
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/// try and create the tag if one is not found.
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/// </param>
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/// <returns>
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/// A <see cref="Tag" /> object containing the tag that was
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/// found in or added to the current instance. If no
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/// matching tag was found and none was created, <see
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/// langword="null" /> is returned.
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/// </returns>
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public override Tag GetTag (TagTypes type, bool create)
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{
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Tag id32_tag = null;
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switch (type) {
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case TagTypes.Id3v2:
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if (tag == null && create) {
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tag = new Id3v2.Tag {
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Version = 2
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};
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}
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id32_tag = tag;
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break;
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}
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return id32_tag;
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}
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#endregion
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#region Private Methods
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/// <summary>
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/// Reads the contents of the current instance determining
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/// the size of the dsf data, the area the tagging is in,
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/// and optionally reading in the tags and media properties.
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/// </summary>
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/// <param name="read_tags">
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/// If <see langword="true" />, any tags found will be read
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/// into the current instance.
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/// </param>
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/// <param name="style">
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/// A <see cref="ReadStyle"/> value specifying how the media
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/// data is to be read into the current instance.
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/// </param>
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/// <param name="dsf_size">
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/// A <see cref="uint"/> value reference to be filled with
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/// the size of the RIFF data as read from the file.
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/// </param>
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/// <param name="tag_start">
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/// A <see cref="long" /> value reference to be filled with
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/// the absolute seek position at which the tagging data
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/// starts.
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/// </param>
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/// <param name="tag_end">
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/// A <see cref="long" /> value reference to be filled with
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/// the absolute seek position at which the tagging data
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/// ends.
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/// </param>
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/// <exception cref="CorruptFileException">
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/// The file does not begin with <see cref="FileIdentifier"
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/// />.
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/// </exception>
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void Read (bool read_tags, ReadStyle style, out uint dsf_size, out long tag_start, out long tag_end)
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{
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Seek (0);
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if (ReadBlock (4) != FileIdentifier)
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throw new CorruptFileException ("File does not begin with DSF identifier");
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Seek (12);
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dsf_size = ReadBlock (8).ToUInt (false);
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tag_start = (long)ReadBlock (8).ToULong (false);
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tag_end = -1;
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// Get the properties of the file
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if (header_block == null && style != ReadStyle.None) {
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long fmt_chunk_pos = Find (FormatIdentifier, 0);
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if (fmt_chunk_pos == -1) {
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throw new CorruptFileException ("No Format chunk available in DSF file.");
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}
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Seek (fmt_chunk_pos);
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header_block = ReadBlock ((int)StreamHeader.Size);
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var header = new StreamHeader (header_block, dsf_size);
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properties = new Properties (TimeSpan.Zero, header);
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}
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// Now position to the ID3 chunk, which we read before
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if (tag_start > 0) {
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Seek (tag_start);
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if (ReadBlock (3) == ID3Identifier) {
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if (read_tags && tag == null) {
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tag = new Id3v2.Tag (this, tag_start, style);
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}
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// Get the length of the tag out of the ID3 chunk
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Seek (tag_start + 6);
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uint tag_size = SynchData.ToUInt (ReadBlock (4)) + 10;
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InvariantStartPosition = tag_start;
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tag_end = InvariantEndPosition = tag_start + tag_size;
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}
|
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}
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}
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#endregion
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}
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}
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@@ -0,0 +1,11 @@
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fileFormatVersion: 2
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guid: 8b09427e5619eec8580e4b303b312ac9
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MonoImporter:
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externalObjects: {}
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serializedVersion: 2
|
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defaultReferences: []
|
||||
executionOrder: 0
|
||||
icon: {instanceID: 0}
|
||||
userData:
|
||||
assetBundleName:
|
||||
assetBundleVariant:
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||||
@@ -0,0 +1,292 @@
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//
|
||||
// StreamHeader.cs: Provides tagging and properties support for the DSD
|
||||
// (Direct Stream Digital) DSF properties.
|
||||
//
|
||||
// Author:
|
||||
// Helmut Wahrmann
|
||||
//
|
||||
// Copyright (C) 2014 Helmut Wahrmann
|
||||
//
|
||||
// This library is free software; you can redistribute it and/or modify
|
||||
// it under the terms of the GNU Lesser General Public License version
|
||||
// 2.1 as published by the Free Software Foundation.
|
||||
//
|
||||
// This library is distributed in the hope that it will be useful, but
|
||||
// WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
// Lesser General Public License for more details.
|
||||
//
|
||||
// You should have received a copy of the GNU Lesser General Public
|
||||
// License along with this library; if not, write to the Free Software
|
||||
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
|
||||
// USA
|
||||
//
|
||||
|
||||
using System;
|
||||
|
||||
namespace TagLib.Dsf
|
||||
{
|
||||
/// <summary>
|
||||
/// This struct implements <see cref="IAudioCodec" /> to provide
|
||||
/// support for reading DSF stream properties.
|
||||
/// </summary>
|
||||
public struct StreamHeader : IAudioCodec, ILosslessAudioCodec
|
||||
{
|
||||
#region Private Fields
|
||||
|
||||
/// <summary>
|
||||
/// Contains the version.
|
||||
/// </summary>
|
||||
/// <remarks>
|
||||
/// This value is stored in bytes (12-15).
|
||||
/// Currently only value of 1 is valid.
|
||||
/// </remarks>
|
||||
readonly ushort version;
|
||||
|
||||
/// <summary>
|
||||
/// The Format Id.
|
||||
/// </summary>
|
||||
/// <remarks>
|
||||
/// This value is stored in bytes (16-19).
|
||||
/// 0: DSD Raw
|
||||
/// </remarks>
|
||||
readonly ushort format_id;
|
||||
|
||||
/// <summary>
|
||||
/// The Channel Type.
|
||||
/// </summary>
|
||||
/// <remarks>
|
||||
/// This value is stored in bytes (20-23).
|
||||
/// 1: mono
|
||||
/// 2:stereo
|
||||
/// 3:3 channels
|
||||
/// 4: quad
|
||||
/// 5: 4 channels
|
||||
/// 6: 5 channels
|
||||
/// 7: 5.1 channels
|
||||
/// </remarks>
|
||||
readonly ushort channel_type;
|
||||
|
||||
/// <summary>
|
||||
/// Contains the number of channels.
|
||||
/// </summary>
|
||||
/// <remarks>
|
||||
/// This value is stored in bytes (24-27).
|
||||
/// 1 is monophonic, 2 is stereo, 4 means 4 channels, etc..
|
||||
/// up to 6 channels may be represented
|
||||
/// </remarks>
|
||||
readonly ushort channels;
|
||||
|
||||
/// <summary>
|
||||
/// Contains the sample rate.
|
||||
/// </summary>
|
||||
/// <remarks>
|
||||
/// This value is stored in bytes (28-31).
|
||||
/// the sample rate at which the sound is to be played back,
|
||||
/// in Hz: 2822400, 5644800
|
||||
/// </remarks>
|
||||
readonly ulong sample_rate;
|
||||
|
||||
/// <summary>
|
||||
/// Contains the number of bits per sample.
|
||||
/// </summary>
|
||||
/// <remarks>
|
||||
/// This value is stored in bytes (32-35).
|
||||
/// It can be any number from 1 to 8.
|
||||
/// </remarks>
|
||||
readonly ushort bits_per_sample;
|
||||
|
||||
/// <summary>
|
||||
/// Contains the number of sample frames per channel.
|
||||
/// </summary>
|
||||
/// <remarks>
|
||||
/// This value is stored in bytes (36-43).
|
||||
/// </remarks>
|
||||
readonly ulong sample_count;
|
||||
|
||||
/// <summary>
|
||||
/// Contains the Block size per channel.
|
||||
/// </summary>
|
||||
/// <remarks>
|
||||
/// This value is stored in bytes (44-47).
|
||||
/// Always: 4096
|
||||
/// </remarks>
|
||||
readonly uint channel_blksize;
|
||||
|
||||
/// <summary>
|
||||
/// Contains the length of the audio stream.
|
||||
/// </summary>
|
||||
/// <remarks>
|
||||
/// This value is provided by the constructor.
|
||||
/// </remarks>
|
||||
readonly long stream_length;
|
||||
|
||||
#endregion
|
||||
|
||||
#region Public Static Fields
|
||||
|
||||
/// <summary>
|
||||
/// The size of an DSF Format chunk
|
||||
/// </summary>
|
||||
public const uint Size = 52;
|
||||
|
||||
/// <summary>
|
||||
/// The identifier used to recognize a DSF file.
|
||||
/// Altough an DSF file start with "DSD ", we're interested
|
||||
/// in the Format chunk only, which contains the properties we need.
|
||||
/// </summary>
|
||||
/// <value>
|
||||
/// "fmt "
|
||||
/// </value>
|
||||
public static readonly ReadOnlyByteVector FileIdentifier = "fmt ";
|
||||
|
||||
#endregion
|
||||
|
||||
#region Constructors
|
||||
|
||||
/// <summary>
|
||||
/// Constructs and initializes a new instance of <see
|
||||
/// cref="StreamHeader" /> for a specified header block and
|
||||
/// stream length.
|
||||
/// </summary>
|
||||
/// <param name="data">
|
||||
/// A <see cref="ByteVector" /> object containing the stream
|
||||
/// header data.
|
||||
/// </param>
|
||||
/// <param name="streamLength">
|
||||
/// A <see cref="long" /> value containing the length of the
|
||||
/// DSF Audio stream in bytes.
|
||||
/// </param>
|
||||
/// <exception cref="ArgumentNullException">
|
||||
/// <paramref name="data" /> is <see langword="null" />.
|
||||
/// </exception>
|
||||
/// <exception cref="CorruptFileException">
|
||||
/// <paramref name="data" /> does not begin with <see
|
||||
/// cref="FileIdentifier" />
|
||||
/// </exception>
|
||||
public StreamHeader (ByteVector data, long streamLength)
|
||||
{
|
||||
if (data == null)
|
||||
throw new ArgumentNullException (nameof (data));
|
||||
|
||||
|
||||
if (!data.StartsWith (FileIdentifier))
|
||||
throw new CorruptFileException ("Data does not begin with identifier.");
|
||||
|
||||
stream_length = streamLength;
|
||||
|
||||
// The first 12 bytes contain the Format chunk identifier "fmt "
|
||||
// And the size of the format chunk, which is always 52
|
||||
version = data.Mid (12, 4).ToUShort (false);
|
||||
format_id = data.Mid (16, 4).ToUShort (false);
|
||||
channel_type = data.Mid (20, 4).ToUShort (false);
|
||||
channels = data.Mid (24, 4).ToUShort (false);
|
||||
sample_rate = data.Mid (28, 4).ToULong (false);
|
||||
bits_per_sample = data.Mid (32, 4).ToUShort (false);
|
||||
sample_count = data.Mid (36, 8).ToULong (false);
|
||||
channel_blksize = data.Mid (44, 4).ToUShort (false);
|
||||
}
|
||||
|
||||
#endregion
|
||||
|
||||
#region Public Properties
|
||||
|
||||
/// <summary>
|
||||
/// Gets the duration of the media represented by the current
|
||||
/// instance.
|
||||
/// </summary>
|
||||
/// <value>
|
||||
/// A <see cref="TimeSpan" /> containing the duration of the
|
||||
/// media represented by the current instance.
|
||||
/// </value>
|
||||
public TimeSpan Duration {
|
||||
get {
|
||||
if (sample_rate <= 0 || sample_count <= 0)
|
||||
return TimeSpan.Zero;
|
||||
|
||||
return TimeSpan.FromSeconds (sample_count / (double)sample_rate);
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Gets the types of media represented by the current
|
||||
/// instance.
|
||||
/// </summary>
|
||||
/// <value>
|
||||
/// Always <see cref="MediaTypes.Audio" />.
|
||||
/// </value>
|
||||
public MediaTypes MediaTypes {
|
||||
get { return MediaTypes.Audio; }
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Gets a text description of the media represented by the
|
||||
/// current instance.
|
||||
/// </summary>
|
||||
/// <value>
|
||||
/// A <see cref="string" /> object containing a description
|
||||
/// of the media represented by the current instance.
|
||||
/// </value>
|
||||
public string Description {
|
||||
get { return "DSF Audio"; }
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Gets the bitrate of the audio represented by the current
|
||||
/// instance.
|
||||
/// </summary>
|
||||
/// <value>
|
||||
/// A <see cref="int" /> value containing a bitrate of the
|
||||
/// audio represented by the current instance.
|
||||
/// </value>
|
||||
public int AudioBitrate {
|
||||
get {
|
||||
TimeSpan d = Duration;
|
||||
if (d <= TimeSpan.Zero)
|
||||
return 0;
|
||||
|
||||
return (int)((stream_length * 8L) / d.TotalSeconds) / 1000;
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Gets the sample rate of the audio represented by the
|
||||
/// current instance.
|
||||
/// </summary>
|
||||
/// <value>
|
||||
/// A <see cref="int" /> value containing the sample rate of
|
||||
/// the audio represented by the current instance.
|
||||
/// </value>
|
||||
public int AudioSampleRate {
|
||||
get { return (int)sample_rate; }
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Gets the number of channels in the audio represented by
|
||||
/// the current instance.
|
||||
/// </summary>
|
||||
/// <value>
|
||||
/// A <see cref="int" /> value containing the number of
|
||||
/// channels in the audio represented by the current
|
||||
/// instance.
|
||||
/// </value>
|
||||
public int AudioChannels {
|
||||
get { return channels; }
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Gets the number of bits per sample in the audio
|
||||
/// represented by the current instance.
|
||||
/// </summary>
|
||||
/// <value>
|
||||
/// A <see cref="int" /> value containing the number of bits
|
||||
/// per sample in the audio represented by the current
|
||||
/// instance.
|
||||
/// </value>
|
||||
public int BitsPerSample {
|
||||
get { return bits_per_sample; }
|
||||
}
|
||||
|
||||
#endregion
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,11 @@
|
||||
fileFormatVersion: 2
|
||||
guid: fc1f0cf5be62d57ad8e4d430c9afeff8
|
||||
MonoImporter:
|
||||
externalObjects: {}
|
||||
serializedVersion: 2
|
||||
defaultReferences: []
|
||||
executionOrder: 0
|
||||
icon: {instanceID: 0}
|
||||
userData:
|
||||
assetBundleName:
|
||||
assetBundleVariant:
|
||||
Reference in new issue
Block a user