/// <summary>
/// Initializes a new instance of the <see cref="BitStream"/> class
/// based on the specified byte array with an expandable capacity, using <see cref="System.IO.MemoryStream"/> as backing data.
/// </summary>
/// <param name="buffer">The array of unsigned bytes from which to create the current stream.</param>
public BitStream(byte[] buffer)
{
if (buffer == null)
throw new ArgumentNullException("buffer");
_sb = new StreamBuffer(buffer.Length);
_sb.Write(buffer, 0, buffer.Length);
_sb.Position -= buffer.Length;
}
////------------------------------------------------------------------------------------------------------------------------------
/// <inheritdoc />
public override byte[] ToByteArray()
{
using (StreamBuffer sb = new StreamBuffer())
{
sb.Write(base.ToByteArray());
sb.WriteBigEndianBytes(UnencodedConstantValue, SampleSize / 8);
return sb.ToByteArray();
}
}
/// <summary>
/// Returns the frame in a byte array.
/// </summary>
/// <returns>The frame in a byte array.</returns>
public byte[] ToByteArray()
{
using (StreamBuffer sb = new StreamBuffer())
{
sb.WriteBigEndianInt32(_header);
sb.Write(_sampleFrameNumberBytes);
int blockSize = (_header >> 12) & 0xF;
switch (blockSize)
{
case 0x06:
sb.WriteByte((byte)(BlockSize - 1));
break;
case 0x07:
sb.WriteBigEndianInt16((short)(BlockSize - 1));
break;
}
int samplingRate = (_header >> 8) & 0xF;
switch (samplingRate)
{
case 0x0C:
sb.WriteByte((byte)(SamplingRate / 1000));
break;
case 0x0D:
sb.WriteBigEndianInt16((short)SamplingRate);
break;
case 0x0E:
sb.WriteBigEndianInt16((short)(SamplingRate / 10));
break;
}
sb.WriteByte((byte)_crc8);
foreach (FlacSubFrame subFrame in SubFrames)
sb.Write(subFrame.ToByteArray());
sb.WriteBigEndianInt16((short)_crc16);
return sb.ToByteArray();
}
}
/// <inheritdoc />
public byte[] ToByteArray()
{
using (StreamBuffer sb = new StreamBuffer())
{
sb.WriteString(Identifier);
FlacStreamInfoMetadataBlock streamInfoMetadataBlock = StreamInfoMetadataBlocks.FirstOrDefault();
if (streamInfoMetadataBlock != null)
sb.Write(streamInfoMetadataBlock.ToByteArray());
foreach (FlacMetadataBlock metadataBlock in MetadataBlocks.Where(m => !ReferenceEquals(m, streamInfoMetadataBlock)))
sb.Write(metadataBlock.ToByteArray());
foreach (FlacFrame frame in Frames)
sb.Write(frame.ToByteArray());
return sb.ToByteArray();
}
}
/// <summary>
/// Finds the <see cref="VbriHeader"/> header within the <paramref name="firstFrame"/>.
/// </summary>
/// <param name="firstFrame">The first frame.</param>
/// <returns>The VBRI header if found; otherwise, null.</returns>
/// <remarks>
/// The VBRI header is located exactly 32 bytes after the end of the first MPEG audio header in the file.
/// It will compare the first 4 bytes against the <see cref="HeaderIndicator"/>
/// to see if the header contains a <see cref="VbriHeader"/> or not.
/// </remarks>
public static new VbriHeader FindHeader(MpaFrame firstFrame)
{
if (firstFrame == null)
throw new ArgumentNullException("firstFrame");
using (StreamBuffer buffer = new StreamBuffer())
{
byte[] data = firstFrame.ToByteArray();
buffer.Write(data);
// 32 bytes = data indicating silence
const long Offset = MpaFrame.FrameHeaderSize + SilenceDataSize;
buffer.Seek(Offset, SeekOrigin.Begin);
string tagName = buffer.ReadString(4, false, false);
return String.Compare(tagName, HeaderIndicator, StringComparison.OrdinalIgnoreCase) == 0
? new VbriHeader(firstFrame, buffer, Offset)
: null;
}
}
/// <summary>
/// Finds the <see cref="VbriHeader"/> header within the <paramref name="firstFrame"/>.
/// </summary>
/// <param name="firstFrame">The first frame.</param>
/// <returns>The VBRI header if found; otherwise, null.</returns>
/// <remarks>
/// The XING header is located after the side information in Layer III in the first MPEG audio header in the file.
/// It will compare the first 4 bytes against the <see cref="VbrHeaderIndicator"/>
/// to see if the header contains a <see cref="XingHeader"/> or not.
/// </remarks>
public static new XingHeader FindHeader(MpaFrame firstFrame)
{
if (firstFrame == null)
throw new ArgumentNullException("firstFrame");
long offset = MpaFrame.FrameHeaderSize + firstFrame.SideInfoSize;
using (StreamBuffer buffer = new StreamBuffer())
{
byte[] data = firstFrame.ToByteArray();
buffer.Write(data);
buffer.Seek(offset, SeekOrigin.Begin);
string tagName = buffer.ReadString(4, false, false);
if ((String.Compare(tagName, VbrHeaderIndicator, StringComparison.OrdinalIgnoreCase) == 0)
|| (String.Compare(tagName, CbrHeaderIndicator, StringComparison.OrdinalIgnoreCase) == 0))
return new XingHeader(firstFrame, buffer, offset);
}
return null;
}
/// <summary>
/// Returns the frame in a byte array.
/// </summary>
/// <returns>The frame in a byte array.</returns>
public byte[] ToByteArray()
{
using (StreamBuffer buffer = new StreamBuffer())
{
buffer.Write(_header);
buffer.Write(AudioData);
return buffer.ToByteArray();
}
}
////------------------------------------------------------------------------------------------------------------------------------
/// <inheritdoc/>
public byte[] ToByteArray()
{
using (StreamBuffer buffer = new StreamBuffer())
{
buffer.Write(HeaderIdentifierBytes);
if (Lyrics != null)
buffer.WriteString(Lyrics, Encoding);
buffer.Write(FooterIdentifierBytes);
return buffer.ToByteArray();
}
}
////------------------------------------------------------------------------------------------------------------------------------
/// <summary>
/// Places the <see cref="VorbisComments"/> into a byte array.
/// </summary>
/// <returns>
/// A byte array that represents the <see cref="VorbisComments"/>.
/// </returns>
public byte[] ToByteArray()
{
using (StreamBuffer buf = new StreamBuffer())
{
Vendor = Vendor ?? String.Empty;
buf.WriteInt(Encoding.UTF8.GetByteCount(Vendor));
buf.WriteString(Vendor, Encoding.UTF8);
buf.WriteInt(Comments.Count);
foreach (byte[] data in Comments.Where(c => c != null).Select(c => c.ToByteArray()))
{
buf.WriteInt(data.Length);
buf.Write(data);
}
return buf.ToByteArray();
}
}
private bool ReadItem(ApeVersion version, int valueSize, StreamBuffer stream, long maximumItemSize)
{
if (stream == null)
throw new ArgumentNullException("stream");
// Check if the item size indicated is really the size of the item.
// Some files just aren't... properly written.
byte[] data = new byte[valueSize];
int dataBytesRead = stream.Read(data, valueSize);
int bytesLeftInStream = (int)(maximumItemSize - dataBytesRead);
if ((valueSize > 0) && (bytesLeftInStream > 0) && (dataBytesRead >= valueSize))
{
using (StreamBuffer dataBuffer = new StreamBuffer(data))
{
// See if there's a next item.
// Try to find the start of the next item.
long startPositionNextItem = stream.Position;
long bytesUntilNextItem = GetBytesUntilNextItem(version, stream, maximumItemSize - valueSize);
stream.Position = startPositionNextItem;
// Seems that the size indicated by the item is not the total size of the item; read the extra bytes here.
if (bytesUntilNextItem > 0)
{
data = new byte[bytesUntilNextItem];
stream.Read(data, data.Length);
dataBuffer.Write(data);
}
data = dataBuffer.ToByteArray();
}
}
Data = data;
return true;
}
/// <inheritdoc />
public byte[] ToByteArray()
{
using (StreamBuffer sb = new StreamBuffer())
{
foreach (MpaFrame frame in Frames)
sb.Write(frame.ToByteArray());
return sb.ToByteArray();
}
}
/// <summary>
/// Returns the metadata block in a byte array.
/// </summary>
/// <returns>The frame in a byte array.</returns>
public byte[] ToByteArray()
{
using (StreamBuffer buffer = new StreamBuffer())
{
buffer.WriteBigEndianBytes(Flags, 1);
buffer.WriteBigEndianBytes(Data.Length, 3);
buffer.Write(Data);
return buffer.ToByteArray();
}
}
////------------------------------------------------------------------------------------------------------------------------------
/// <inheritdoc />
public byte[] ToByteArray()
{
using (StreamBuffer buffer = new StreamBuffer())
{
if (UseHeader)
{
// Header
buffer.Write(HeaderIdentifierBytes);
buffer.WritePadding(NullByte, 2);
buffer.WriteString(XingEncoderVersion);
buffer.WritePadding(NullByte, 2);
buffer.WriteString(Version);
buffer.WritePadding(NullByte, 2);
buffer.WritePadding(PaddingByte, 226);
}
// Image extension
int imageExtensionOffset = (int)buffer.Position;
if ((Image != null) && !String.IsNullOrEmpty(Image.FileExtension))
{
buffer.WriteString(Image.FileExtension);
buffer.WritePadding(PaddingByte, 4 - Image.FileExtension.Length);
}
else
buffer.WritePadding(PaddingByte, 4);
// Image binary
int imageBinaryOffset = (int)buffer.Position;
if ((Image != null) && (Image.BinaryImage != null))
{
buffer.WriteInt(Image.BinaryImage.Length);
buffer.Write(Image.BinaryImage);
}
else
buffer.WriteInt(0);
// Unused
int unusedOffset = (int)buffer.Position;
buffer.WritePadding(NullByte, 4);
// Version information
int versionInfoOffset = (int)buffer.Position;
buffer.WriteString(HeaderIdentifier);
buffer.WritePadding(NullByte, 2);
buffer.WriteString(XingEncoderVersion);
buffer.WritePadding(NullByte, 2);
buffer.WriteString(Version);
buffer.WritePadding(NullByte, 2);
buffer.WritePadding(PaddingByte, 226);
// Audio meta-data
// The audio meta-data is the heart of the MusicMatch tag. It contains most
// of the pertinent information found in other tagging formats (song title,
// album title, artist, etc.) and some that are unique to this format (mood,
// preference, situation).
int audioMetaDataOffset = (int)buffer.Position;
// Single-line text fields
buffer.WriteShort((short)(SongTitle ?? String.Empty).Length);
buffer.WriteString(SongTitle ?? String.Empty);
buffer.WriteShort((short)(AlbumTitle ?? String.Empty).Length);
buffer.WriteString(AlbumTitle ?? String.Empty);
buffer.WriteShort((short)(ArtistName ?? String.Empty).Length);
buffer.WriteString(ArtistName ?? String.Empty);
buffer.WriteShort((short)(Genre ?? String.Empty).Length);
buffer.WriteString(Genre ?? String.Empty);
buffer.WriteShort((short)(Tempo ?? String.Empty).Length);
buffer.WriteString(Tempo ?? String.Empty);
buffer.WriteShort((short)(Mood ?? String.Empty).Length);
buffer.WriteString(Mood ?? String.Empty);
buffer.WriteShort((short)(Situation ?? String.Empty).Length);
buffer.WriteString(Situation ?? String.Empty);
buffer.WriteShort((short)(Preference ?? String.Empty).Length);
buffer.WriteString(Preference ?? String.Empty);
// Non-text fields
buffer.WriteShort((short)(SongDuration ?? String.Empty).Length);
buffer.WriteString(SongDuration ?? String.Empty);
buffer.WriteDouble(CreationDate.ToOADate());
buffer.WriteInt(PlayCounter);
buffer.WriteShort((short)(OriginalFilename ?? String.Empty).Length);
buffer.WriteString(OriginalFilename ?? String.Empty);
buffer.WriteShort((short)(SerialNumber ?? String.Empty).Length);
buffer.WriteString(SerialNumber ?? String.Empty);
buffer.WriteShort(TrackNumber);
// Multi-line text fields
buffer.WriteShort((short)(Notes ?? String.Empty).Length);
buffer.WriteString(Notes ?? String.Empty);
buffer.WriteShort((short)(ArtistBio ?? String.Empty).Length);
buffer.WriteString(ArtistBio ?? String.Empty);
buffer.WriteShort((short)(Lyrics ?? String.Empty).Length);
buffer.WriteString(Lyrics ?? String.Empty);
// Internet addresses
buffer.WriteShort((short)(ArtistUrl ?? String.Empty).Length);
buffer.WriteString(ArtistUrl ?? String.Empty);
buffer.WriteShort((short)(BuyCdUrl ?? String.Empty).Length);
buffer.WriteString(BuyCdUrl ?? String.Empty);
buffer.WriteShort((short)(ArtistEmail ?? String.Empty).Length);
buffer.WriteString(ArtistEmail ?? String.Empty);
// Null bytes
buffer.WritePadding(NullByte, 16);
// In all versions of the MusicMatch format up to and including 3.00, the
// section is always 7868 bytes in length. All subsequent versions allowed
// three possible lengths for this section: 7936, 8004, and 8132 bytes. The
// conditions under which a particular length from these three possibilities
// was used is unknown. In all cases, this section is padded with dashes
// ($2D) to achieve this constant size.
double version;
if (!Double.TryParse(Version, out version))
version = 3.100000;
// The padding is calculated by taking the AudioMetaDataSize minus the total size of audio meta data fields,
// minus the total size of the data offset fields, minus the footer size.
long paddingSize = ((version <= 3.1) ? AudioMetaDataSizes.First() : AudioMetaDataSizes.Last()) - (buffer.Length - audioMetaDataOffset) - DataOffsetFieldsSize - FooterSize;
buffer.WritePadding(0x2D, (int)paddingSize);
// Data offsets
buffer.WriteInt(imageExtensionOffset);
buffer.WriteInt(imageBinaryOffset);
buffer.WriteInt(unusedOffset);
buffer.WriteInt(versionInfoOffset);
buffer.WriteInt(audioMetaDataOffset);
// Footer
buffer.Write(FooterIdentifierBytes);
buffer.WritePadding(PaddingByte, 13);
buffer.WriteString(Version.Substring(0 ,4));
buffer.WritePadding(PaddingByte, 12);
return buffer.ToByteArray();
}
}
////------------------------------------------------------------------------------------------------------------------------------
/// <inheritdoc/>
/// <remarks>
/// The extended tags will only be written when <see cref="UseExtendedTag"/> is set to true.
/// </remarks>
public byte[] ToByteArray()
{
using (StreamBuffer buffer = new StreamBuffer())
{
byte[] byteValue;
if (UseExtendedTag)
{
// TAG+
buffer.Write(ExtendedHeaderIdentifierBytes);
// Title - write the last 60 bytes
byteValue = _encoding.GetBytes(GetExtendedString(_trackTitle ?? String.Empty, 30, 60, true));
buffer.Write(byteValue);
buffer.WritePadding(0x00, 60 - byteValue.Length);
// Artist - write the last 60 bytes
byteValue = _encoding.GetBytes(GetExtendedString(_artist ?? String.Empty, 30, 60, true));
buffer.Write(byteValue);
buffer.WritePadding(0x00, 60 - byteValue.Length);
// Album Title - write the last 60 bytes
byteValue = _encoding.GetBytes(GetExtendedString(_albumTitle ?? String.Empty, 30, 60, true));
buffer.Write(byteValue);
buffer.WritePadding(0x00, 60 - byteValue.Length);
// Track Speed
buffer.WriteByte((byte)_trackSpeed);
// Extended Track Genre
byteValue = _encoding.GetBytes(ExtendedTrackGenre ?? String.Empty);
buffer.Write(byteValue);
buffer.WritePadding(0x00, 30 - byteValue.Length);
// Start-time
long startTimeMinutes = (StartTime.Days * 24 * 60) + (StartTime.Hours * 60) + StartTime.Minutes;
long startTimeSeconds = StartTime.Seconds;
string startTime = startTimeMinutes.ToString("000") + ":" + startTimeSeconds.ToString("00");
byteValue = _encoding.GetBytes(GetTruncatedEncodedString(startTime, 6));
buffer.Write(byteValue);
// End-time
long endTimeMinutes = (EndTime.Days * 24 * 60) + (EndTime.Hours * 60) + EndTime.Minutes;
long endTimeSeconds = EndTime.Seconds;
string endTime = endTimeMinutes.ToString("000") + ":" + endTimeSeconds.ToString("00");
byteValue = _encoding.GetBytes(GetTruncatedEncodedString(endTime, 6));
buffer.Write(byteValue);
}
// TAG
buffer.Write(HeaderIdentifierBytes);
// Track Title
byteValue = _encoding.GetBytes(GetTruncatedEncodedString(_trackTitle ?? String.Empty, 30));
buffer.Write(byteValue);
buffer.WritePadding(0x00, 30 - byteValue.Length);
// Artist
byteValue = _encoding.GetBytes(GetTruncatedEncodedString(_artist ?? String.Empty, 30));
buffer.Write(byteValue);
buffer.WritePadding(0x00, 30 - byteValue.Length);
// Album Title
byteValue = _encoding.GetBytes(GetTruncatedEncodedString(_albumTitle ?? String.Empty, 30));
buffer.Write(byteValue);
buffer.WritePadding(0x00, 30 - byteValue.Length);
// Album Year
byteValue = _encoding.GetBytes(AlbumYear ?? String.Empty);
buffer.Write(byteValue);
buffer.WritePadding(0x00, 4 - byteValue.Length);
// Track comment
byteValue = _encoding.GetBytes(TrackComment ?? String.Empty);
buffer.Write(byteValue);
buffer.WritePadding(0x00, TrackCommentLength - byteValue.Length);
// Track Number
if (Version >= Id3v1Version.Id3v11)
{
buffer.WriteByte(0x00);
buffer.WriteByte(TrackNumber);
}
// Genre
buffer.WriteByte((byte)Genre);
return buffer.ToByteArray();
}
}
public void WriteTest2()
{
StreamBuffer target = new StreamBuffer(); // TODO: Initialize to an appropriate value
byte[] buffer = null; // TODO: Initialize to an appropriate value
target.Write(buffer);
Assert.Inconclusive("A method that does not return a value cannot be verified.");
}
////------------------------------------------------------------------------------------------------------------------------------
/// <summary>
/// Writes the frame into a byte array.
/// </summary>
/// <returns>
/// A byte array that represents the frame.
/// </returns>
public byte[] ToByteArray()
{
using (StreamBuffer sb = new StreamBuffer())
{
sb.WriteString(Identifier, Encoding.ASCII, FieldIdentifierLength);
byte[] data = Data;
if (data != null)
{
sb.WriteString(data.Length.ToString("D" + FieldSizeLength, CultureInfo.InvariantCulture));
sb.Write(data);
}
else
{
sb.WriteString(0.ToString("D" + FieldSizeLength, CultureInfo.InvariantCulture));
}
return sb.ToByteArray();
}
}
