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)));
}
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;
}
}
//////////////////////////////////////////////////////////////////////////
// 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 Read(OggVorbisFile file, ReadStyle style)
private void Read(OggVorbisFile file)
{
// Get the identification header from the Ogg implementation.
ByteVector data = file.GetPacket(0);
int pos = 0;
if (data.Mid(pos, 7) != vorbisCommentHeaderId)
{
TagLibDebugger.Debug("Vorbis.Properties.Read() -- invalid Vorbis identification header");
return;
}
pos += 7;
vorbisVersion = (int)data.Mid(pos, 4).ToUInt(false);
pos += 4;
channels = data[pos];
pos += 1;
sampleRate = (int)data.Mid(pos, 4).ToUInt(false);
pos += 4;
bitrateMaximum = (int)data.Mid(pos, 4).ToUInt(false);
pos += 4;
bitrateNominal = (int)data.Mid(pos, 4).ToUInt(false);
pos += 4;
bitrateMinimum = (int)data.Mid(pos, 4).ToUInt(false);
// TODO: Later this should be only the "fast" mode.
bitrate = bitrateNominal;
// Find the length of the file. See http://wiki.xiph.org/VorbisStreamLength/
// for my notes on the topic.
OggPageHeader first = file.FirstPageHeader;
OggPageHeader last = file.LastPageHeader;
if (first != null && last != null)
{
long start = first.AbsoluteGranularPosition;
long end = last.AbsoluteGranularPosition;
if (start >= 0 && end >= 0 && sampleRate > 0)
{
duration = TimeSpan.FromSeconds(((double)(end - start) / (double)sampleRate));
}
else
{
TagLibDebugger.Debug("Vorbis.Properties.Read() -- Either the PCM " +
"values for the start or end of this file was " +
"incorrect or the sample rate is zero.");
}
}
else
{
TagLibDebugger.Debug("Vorbis.Properties.Read() -- Could not find valid first and last Ogg pages.");
}
}
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)));
}
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;
}
