public void Parse(ByteVector data)
{
if (data != null)
{
// 11 buffer is the minimum size for an APE item
if (data.Count < 11)
{
TagLibDebugger.Debug("APE.Item.Parse() -- no data in item");
return;
}
uint value_length = data.Mid(0, 4).ToUInt(false);
uint flags = data.Mid(4, 4).ToUInt(false);
int pos = data.Find(new ByteVector(1), 8);
key = data.Mid(8, pos - 8).ToString(StringType.UTF8);
value = data.Mid(pos + 1, (int)value_length);
ReadOnly = (flags & 1) == 1;
Type = (ApeItemType)((flags >> 1) & 3);
if (Type != ApeItemType.Binary)
{
text.Clear();
text = new StringCollection(ByteVectorCollection.Split(value, (byte)0), StringType.UTF8);
}
}
else
{
throw new ArgumentNullException("data");
}
}
protected OggPage(ByteVectorCollection packets, uint stream_serial_number,
int page_number, bool first_packet_continued,
bool last_packet_completed)
: this(packets, stream_serial_number, page_number,
first_packet_continued, last_packet_completed, false)
{
}
public static OggPage[] Paginate(ByteVectorCollection packets, PaginationStrategy strategy, uint streamSerialNumber,
int firstPage, bool firstPacketContinued, bool lastPacketCompleted, bool containsLastPacket)
{
ArrayList l = new ArrayList();
int totalSize = 0;
foreach (ByteVector b in packets)
{
totalSize += b.Count;
}
if (strategy == PaginationStrategy.Repaginate || totalSize + packets.Count > 255 * 256)
{
TagLibDebugger.Debug("Ogg.Page.Paginate() -- Sorry! Repagination is not yet implemented.");
return((OggPage[])l.ToArray(typeof(OggPage)));
}
// TODO: Handle creation of multiple pages here with appropriate pagination.
OggPage p = new OggPage(packets, streamSerialNumber, firstPage, firstPacketContinued,
lastPacketCompleted, containsLastPacket);
l.Add(p);
return((OggPage[])l.ToArray(typeof(OggPage)));
}
public static ByteVectorCollection Split(ByteVector vector, ByteVector pattern, int alignment, int maximum)
{
if (vector != null)
{
if (pattern != null)
{
ByteVectorCollection list = new ByteVectorCollection();
int previousOffset = 0;
for (int offset = vector.Find(pattern, 0, alignment);
offset != -1 && (maximum == 0 || maximum > list.Count + 1);
offset = vector.Find(pattern, offset + pattern.Count, alignment))
{
list.Add(vector.Mid(previousOffset, offset - previousOffset));
previousOffset = offset + pattern.Count;
}
if (previousOffset < vector.Count)
{
list.Add(vector.Mid(previousOffset, vector.Count - previousOffset));
}
return(list);
}
else
{
throw new ArgumentNullException("pattern");
}
}
else
{
throw new ArgumentNullException("vector");
}
}
//public Mpeg4AppleDataBox[] DataBoxes(ByteVectorCollection list)
public IList <Mpeg4AppleDataBox> DataBoxes(ByteVectorCollection list)
{
//ArrayList l = new ArrayList();
List <Mpeg4AppleDataBox> boxes = new List <Mpeg4AppleDataBox>();
// Check each box to see if the match any of the provided types.
// If a match is found, loop through the children and add any data box.
foreach (Mpeg4Box box in listBox.Children)
{
foreach (ByteVector vector in list)
{
if (FixId(vector) == box.BoxType)
{
foreach (Mpeg4Box dataBox in box.Children)
{
//if (dataBox.GetType() == typeof(Mpeg4AppleDataBox))
Mpeg4AppleDataBox appleDataBox = dataBox as Mpeg4AppleDataBox;
if (appleDataBox != null)
{
boxes.Add(appleDataBox);
}
}
}
}
}
// Return the results as an numbers.
return(boxes);
//(Mpeg4AppleDataBox[])l.ToArray(typeof(Mpeg4AppleDataBox));
}
protected OggPage(ByteVectorCollection packets, uint stream_serial_number,
int page_number, bool first_packet_continued,
bool last_packet_completed, bool contains_last_packet)
{
//file = null;
fileOffset = -1;
//packetOffset = 0;
//dataSize = 0;
header = new OggPageHeader();
firstPacketIndex = -1;
this.packets = packets;
ByteVector data = new ByteVector();
ArrayList packet_sizes = new ArrayList();
header.FirstPageOfStream = (page_number == 0 && !first_packet_continued);
header.LastPageOfStream = contains_last_packet;
header.FirstPacketContinued = first_packet_continued;
header.LastPacketCompleted = last_packet_completed;
header.StreamSerialNumber = stream_serial_number;
header.PageSequenceNumber = page_number;
// Build a page from the text of packets.
foreach (ByteVector v in packets)
{
packet_sizes.Add(v.Count);
data.Add(v);
}
header.SetPacketSizes((int[])packet_sizes.ToArray(typeof(int)));
}
public StringCollection(ByteVectorCollection text, StringType type)
{
foreach (ByteVector vector in text)
{
Add(vector.ToString(type));
}
}
private void ParseUniqueFields(ByteVector data)
{
ByteVectorCollection fields = ByteVectorCollection.Split(data, (byte)0);
if (fields.Count != 2)
{
return;
}
owner = fields[0].ToString(StringType.Latin1);
identifier = fields[1];
}
protected void ClearPageData()
{
streamSerialNumber = 0;
pages = new List <OggPage>(); //new ArrayList ();
firstPageHeader = null;
lastPageHeader = null;
packetToPageMap = new List <IntCollection>(); //new ArrayList();
dirtyPackets = new Dictionary <uint, ByteVector>(); //new Hashtable ();
dirtyPages = new IntCollection();
currentPage = null;
currentPacketPage = null;
currentPackets = null;
}
//////////////////////////////////////////////////////////////////////////
// public methods
//////////////////////////////////////////////////////////////////////////
public OggPage(OggFile file, long pageOffset)
{
this.file = file;
this.fileOffset = pageOffset;
//packetOffset = 0;
//dataSize = 0;
header = new OggPageHeader(file, pageOffset);
firstPacketIndex = -1;
packets = new ByteVectorCollection();
if (file != null)
{
packetOffset = fileOffset + header.Size;
dataSize = header.DataSize;
}
}
private void ParsePrivateFields(ByteVector data)
{
if (data.Count < 1)
{
TagLibDebugger.Debug("A private frame must contain at least 1 byte.");
return;
}
ByteVectorCollection list = ByteVectorCollection.Split(data, TextDelimiter(StringType.Latin1), 1, 2);
if (list.Count == 2)
{
owner = list[0].ToString(StringType.Latin1);
data = list[1];
}
}
// Set the data with the given box type, strings, and flags.
public void SetText(ByteVector type, string[] text)
{
// Remove empty data and return.
if (text == null)
{
listBox.RemoveChildren(FixId(type));
return;
}
// Create a text...
ByteVectorCollection data = new ByteVectorCollection();
// and populate it with the ByteVectorized strings.
foreach (string value in text)
{
data.Add(ByteVector.FromString(value, StringType.UTF8));
}
// Send our final byte vectors to SetData
SetData(type, data, (uint)Mpeg4ContentType.ContainsText);
}
private void ParseTextIdentifierFields(ByteVector data)
{
// read the string data type (the first byte of the field data)
textEncoding = (StringType)data[0];
// split the byte numbers into chunks based on the string type (two byte delimiter
// for unicode encodings)
int byteAlign = textEncoding == StringType.Latin1 || textEncoding == StringType.UTF8 ? 1 : 2;
ByteVectorCollection list = ByteVectorCollection.Split(data.Mid(1), TextDelimiter(textEncoding), byteAlign);
fieldList.Clear();
// append those split values to the text and make sure that the new string'field
// type is the same specified for this frame
foreach (ByteVector vector in list)
{
fieldList.Add(vector.ToString(textEncoding));
}
}
public void SetData(ByteVector type, ByteVectorCollection data, uint flags)
{
if (data != null)
{
if (data.Count > 0)
{
Mpeg4AppleDataBox[] boxes = new Mpeg4AppleDataBox[data.Count];
for (int i = 0; i < data.Count; i++)
{
boxes[i] = new Mpeg4AppleDataBox(data[i], flags);
}
SetData(type, boxes);
}
else
{
ClearData(type);
}
}
else
{
ClearData(type);
}
}
private void ParseCommentsFields(ByteVector data)
{
if (data.Count < 5)
{
TagLibDebugger.Debug("A comment frame must contain at least 5 bytes.");
return;
}
textEncoding = (StringType)data[0];
language = data.Mid(1, 3);
int byte_align = textEncoding == StringType.Latin1 || textEncoding == StringType.UTF8 ? 1 : 2;
ByteVectorCollection l = ByteVectorCollection.Split(data.Mid(4), TextDelimiter(textEncoding), byte_align, 2);
if (l.Count == 2)
{
if (l[0].Data != null && l[0].Data.Count > 0)
{
description = l[0].ToString(textEncoding);
}
else
{
description = string.Empty;
}
if (l[1].Data != null && l[1].Data.Count > 0)
{
text = l[1].ToString(textEncoding);
}
else
{
text = string.Empty;
}
}
}
public static OggPage[] Paginate(ByteVectorCollection packets, PaginationStrategy strategy, uint streamSerialNumber,
int firstPage)
{
return(Paginate(packets, strategy, streamSerialNumber, firstPage, false));
}
public ByteVector GetPacket(uint index)
{
// Check to see if we're called setPacket() for this packet since the last
// save:
if (dirtyPackets.ContainsKey(index))
{
return(dirtyPackets[index]);
}
// If we haven'type indexed the page where the packet we're interested in starts,
// begin reading pages until we have.
while (packetToPageMap.Count <= index)
{
if (!NextPage())
{
TagLibDebugger.Debug("Ogg.File.Packet() -- Could not find the requested packet.");
return(null);
}
}
// Start reading at the first page that contains part (or all) of this packet.
// If the last read stopped at the packet that we're interested in, don'type
// reread its packet text. (This should make sequential packet reads fast.)
int pageIndex = ((IntCollection)packetToPageMap[(int)index])[0];
if (currentPacketPage != pages[pageIndex])
{
currentPacketPage = pages[pageIndex];
currentPackets = currentPacketPage.Packets;
}
// If the packet is completely contained in the first page that it'field in, then
// just return it now.
if ((currentPacketPage.ContainsPacket((int)index) & ContainsPacketSettings.CompletePacket) != 0)
{
return(currentPackets[(int)(index - currentPacketPage.FirstPacketIndex)]);
}
// If the packet is *not* completely contained in the first page that it'field a
// part of then that packet trails off the end of the page. Continue appending
// the pages' packet data until we hit a page that either does not end with the
// packet that we're fetching or where the last packet is complete.
ByteVector packet = currentPackets[currentPackets.Count - 1];
while ((currentPacketPage.ContainsPacket((int)index) & ContainsPacketSettings.EndsWithPacket) != 0 &&
!currentPacketPage.Header.LastPacketCompleted)
{
pageIndex++;
if (pageIndex == pages.Count && !NextPage())
{
TagLibDebugger.Debug("Ogg.File.Packet() -- Could not find the requested packet.");
return(null);
}
currentPacketPage = (OggPage)pages[pageIndex];
currentPackets = currentPacketPage.Packets;
packet.Add(currentPackets[0]);
}
return(packet);
}
private void WritePageGroup(IntCollection page_group)
{
if (page_group.IsEmpty)
{
return;
}
ByteVectorCollection packets = new ByteVectorCollection();
// If the first page of the group isn'type dirty, append its partial content here.
if (!dirtyPages.Contains(((OggPage)this.pages[page_group[0]]).FirstPacketIndex))
{
packets.Add(((OggPage)this.pages[page_group[0]]).Packets[0]);
}
int previous_packet = -1;
int original_size = 0;
for (int i = 0; i < page_group.Count; i++)
{
int page = page_group[i];
uint first_packet = (uint)((OggPage)this.pages[page]).FirstPacketIndex;
uint last_packet = first_packet + ((OggPage)this.pages[page]).PacketCount - 1;
for (uint j = first_packet; j <= last_packet; j++)
{
if (i == page_group.Count - 1 && j == last_packet && !dirtyPages.Contains((int)j))
{
packets.Add(((OggPage)this.pages[page]).Packets[((OggPage)this.pages[page]).Packets.Count - 1]);
}
else if ((int)j != previous_packet)
{
previous_packet = (int)j;
packets.Add(GetPacket(j));
}
}
original_size += ((OggPage)this.pages[page]).Size;
}
bool continued = ((OggPage)this.pages[page_group[0]]).Header.FirstPacketContinued;
bool completed = ((OggPage)this.pages[page_group[page_group.Count - 1]]).Header.LastPacketCompleted;
// TODO: This pagination method isn'type accurate for what'field being done here.
// This should account for real possibilities like non-aligned packets and such.
OggPage[] pages = OggPage.Paginate(packets, PaginationStrategy.SinglePagePerGroup,
streamSerialNumber, page_group[0],
continued, completed);
ByteVector data = new ByteVector();
foreach (OggPage p in pages)
{
data.Add(p.Render());
}
// The insertion algorithms could also be improve to queue and prioritize data
// on the way out. Currently it requires rewriting the file for every page
// group rather than just once; however, for tagging applications there will
// generally only be one page group, so it'field not worth the time for the
// optimization at the moment.
Insert(data, ((OggPage)this.pages[page_group[0]]).FileOffset, original_size);
// Update the page index to include the pages we just created and to delete the
// old pages.
foreach (OggPage p in pages)
{
int index = p.Header.PageSequenceNumber;
this.pages[index] = p;
}
}
public static OggPage[] Paginate(ByteVectorCollection packets, PaginationStrategy strategy, uint streamSerialNumber,
int firstPage, bool firstPacketContinued)
{
return(Paginate(packets, strategy, streamSerialNumber, firstPage,
firstPacketContinued, true));
}
protected OggPage(ByteVectorCollection packets, uint stream_serial_number,
int page_number)
: this(packets, stream_serial_number, page_number, false)
{
}
public StringCollection(ByteVectorCollection text) : this(text, StringType.UTF8)
{
}
