internal static VorbisMode Init(VorbisStreamDecoder vorbis, DataPacket packet)
{
VorbisMode vorbisMode = new VorbisMode(vorbis);
vorbisMode.BlockFlag = packet.ReadBit();
vorbisMode.WindowType = (int) packet.ReadBits(16);
vorbisMode.TransformType = (int) packet.ReadBits(16);
int index = (int) packet.ReadBits(8);
if (vorbisMode.WindowType != 0 || vorbisMode.TransformType != 0 || index >= vorbis.Maps.Length)
throw new InvalidDataException();
vorbisMode.Mapping = vorbis.Maps[index];
vorbisMode.BlockSize = vorbisMode.BlockFlag ? vorbis.Block1Size : vorbis.Block0Size;
if (vorbisMode.BlockFlag)
{
vorbisMode._windows = new float[4][];
vorbisMode._windows[0] = new float[vorbis.Block1Size];
vorbisMode._windows[1] = new float[vorbis.Block1Size];
vorbisMode._windows[2] = new float[vorbis.Block1Size];
vorbisMode._windows[3] = new float[vorbis.Block1Size];
}
else
{
vorbisMode._windows = new float[1][];
vorbisMode._windows[0] = new float[vorbis.Block0Size];
}
vorbisMode.CalcWindows();
return vorbisMode;
}
internal static VorbisMode Init(VorbisStreamDecoder vorbis, DataPacket packet)
{
var mode = new VorbisMode(vorbis);
mode.BlockFlag = packet.ReadBit();
mode.WindowType = (int)packet.ReadBits(16);
mode.TransformType = (int)packet.ReadBits(16);
var mapping = (int)packet.ReadBits(8);
if (mode.WindowType != 0 || mode.TransformType != 0 || mapping >= vorbis.Maps.Length) throw new InvalidDataException();
mode.Mapping = vorbis.Maps[mapping];
mode.BlockSize = mode.BlockFlag ? vorbis.Block1Size : vorbis.Block0Size;
// now pre-calc the window(s)...
if (mode.BlockFlag)
{
// long block
mode._windows = new float[4][];
mode._windows[0] = new float[vorbis.Block1Size];
mode._windows[1] = new float[vorbis.Block1Size];
mode._windows[2] = new float[vorbis.Block1Size];
mode._windows[3] = new float[vorbis.Block1Size];
}
else
{
// short block
mode._windows = new float[1][];
mode._windows[0] = new float[vorbis.Block0Size];
}
mode.CalcWindows();
return mode;
}
internal static VorbisMode Init(VorbisStreamDecoder vorbis, DataPacket packet)
{
VorbisMode vorbisMode = new VorbisMode(vorbis);
vorbisMode.BlockFlag = packet.ReadBit();
vorbisMode.WindowType = (int)packet.ReadBits(16);
vorbisMode.TransformType = (int)packet.ReadBits(16);
int num = (int)packet.ReadBits(8);
if (vorbisMode.WindowType != 0 || vorbisMode.TransformType != 0 || num >= vorbis.Maps.Length)
{
throw new InvalidDataException();
}
vorbisMode.Mapping = vorbis.Maps[num];
vorbisMode.BlockSize = (vorbisMode.BlockFlag ? vorbis.Block1Size : vorbis.Block0Size);
if (vorbisMode.BlockFlag)
{
vorbisMode._windows = new float[4][];
vorbisMode._windows[0] = new float[vorbis.Block1Size];
vorbisMode._windows[1] = new float[vorbis.Block1Size];
vorbisMode._windows[2] = new float[vorbis.Block1Size];
vorbisMode._windows[3] = new float[vorbis.Block1Size];
}
else
{
vorbisMode._windows = new float[1][];
vorbisMode._windows[0] = new float[vorbis.Block0Size];
}
vorbisMode.CalcWindows();
return(vorbisMode);
}
internal int GetPacketLength(DataPacket curPacket, DataPacket lastPacket)
{
if (lastPacket == null || curPacket.IsResync)
{
return(0);
}
if (curPacket.ReadBit())
{
return(0);
}
if (lastPacket.ReadBit())
{
return(0);
}
int num = (int)curPacket.ReadBits(_modeFieldBits);
if (num < 0 || num >= Modes.Length)
{
return(0);
}
VorbisMode vorbisMode = Modes[num];
num = (int)lastPacket.ReadBits(_modeFieldBits);
if (num < 0 || num >= Modes.Length)
{
return(0);
}
VorbisMode vorbisMode2 = Modes[num];
return(vorbisMode.BlockSize / 4 + vorbisMode2.BlockSize / 4);
}
internal int GetPacketLength(DataPacket curPacket, DataPacket lastPacket)
{
if (lastPacket == null || curPacket.IsResync || (curPacket.ReadBit() || lastPacket.ReadBit()))
{
return(0);
}
int index1 = (int)curPacket.ReadBits(this._modeFieldBits);
if (index1 < 0 || index1 >= this.Modes.Length)
{
return(0);
}
VorbisMode vorbisMode1 = this.Modes[index1];
int index2 = (int)lastPacket.ReadBits(this._modeFieldBits);
if (index2 < 0 || index2 >= this.Modes.Length)
{
return(0);
}
VorbisMode vorbisMode2 = this.Modes[index2];
return(vorbisMode1.BlockSize / 4 + vorbisMode2.BlockSize / 4);
}
internal static VorbisMode Init(VorbisStreamDecoder vorbis, DataPacket packet)
{
var mode = new VorbisMode(vorbis);
mode.BlockFlag = packet.ReadBit();
mode.WindowType = (int)packet.ReadBits(16);
mode.TransformType = (int)packet.ReadBits(16);
var mapping = (int)packet.ReadBits(8);
if (mode.WindowType != 0 || mode.TransformType != 0 || mapping >= vorbis.Maps.Length)
{
throw new Exception();
}
mode.Mapping = vorbis.Maps[mapping];
mode.BlockSize = mode.BlockFlag ? vorbis.Block1Size : vorbis.Block0Size;
// now pre-calc the window(s)...
if (mode.BlockFlag)
{
// long block
mode._windows = new float[4][];
mode._windows[0] = new float[vorbis.Block1Size];
mode._windows[1] = new float[vorbis.Block1Size];
mode._windows[2] = new float[vorbis.Block1Size];
mode._windows[3] = new float[vorbis.Block1Size];
}
else
{
// short block
mode._windows = new float[1][];
mode._windows[0] = new float[vorbis.Block0Size];
}
mode.CalcWindows();
return(mode);
}
bool UnpackPacket(DataPacket packet)
{
// make sure we're on an audio packet
if (packet.ReadBit())
{
// we really can't do anything... count the bits as waste
return(false);
}
// get mode and prev/next flags
var modeBits = _modeFieldBits;
_mode = Modes[(int)packet.ReadBits(_modeFieldBits)];
if (_mode.BlockFlag)
{
_prevFlag = packet.ReadBit();
_nextFlag = packet.ReadBit();
modeBits += 2;
}
else
{
_prevFlag = _nextFlag = false;
}
if (packet.IsShort)
{
return(false);
}
var startBits = packet.BitsRead;
var halfBlockSize = _mode.BlockSize / 2;
// read the noise floor data (but don't decode yet)
for (int i = 0; i < _channels; i++)
{
_floorData[i] = _mode.Mapping.ChannelSubmap[i].Floor.UnpackPacket(packet, _mode.BlockSize, i);
_noExecuteChannel[i] = !_floorData[i].ExecuteChannel;
// go ahead and clear the residue buffers
Array.Clear(_residue[i], 0, halfBlockSize);
}
// make sure we handle no-energy channels correctly given the couplings...
foreach (var step in _mode.Mapping.CouplingSteps)
{
if (_floorData[step.Angle].ExecuteChannel || _floorData[step.Magnitude].ExecuteChannel)
{
_floorData[step.Angle].ForceEnergy = true;
_floorData[step.Magnitude].ForceEnergy = true;
}
}
var floorBits = packet.BitsRead - startBits;
startBits = packet.BitsRead;
foreach (var subMap in _mode.Mapping.Submaps)
{
for (int j = 0; j < _channels; j++)
{
if (_mode.Mapping.ChannelSubmap[j] != subMap)
{
_floorData[j].ForceNoEnergy = true;
}
}
var rTemp = subMap.Residue.Decode(packet, _noExecuteChannel, _channels, _mode.BlockSize);
for (int c = 0; c < _channels; c++)
{
var r = _residue[c];
var rt = rTemp[c];
for (int i = 0; i < halfBlockSize; i++)
{
r[i] += rt[i];
}
}
}
_glueBits += 1;
_modeBits += modeBits;
_floorBits += floorBits;
_resBits += packet.BitsRead - startBits;
_wasteBits += 8 * packet.Length - packet.BitsRead;
_packetCount += 1;
return(true);
}
bool LoadBooks(DataPacket packet)
{
bool equal = true;
byte[] sequence = new byte[] { 0x05, 0x76, 0x6f, 0x72, 0x62, 0x69, 0x73 };
byte[] packets = packet.ReadBytes(7);
for (int i = 0; i < 7; i++)
{
if (packets[i] != sequence[i])
{
equal = false;
break;
}
}
if (!equal)
{
return(false);
}
if (!_pagesSeen.Contains((_lastPageSeen = packet.PageSequenceNumber)))
{
_pagesSeen.Add(_lastPageSeen);
}
var bits = packet.BitsRead;
_glueBits += packet.BitsRead;
// get books
Books = new VorbisCodebook[packet.ReadByte() + 1];
for (int i = 0; i < Books.Length; i++)
{
Books[i] = VorbisCodebook.Init(this, packet, i);
}
_bookBits += packet.BitsRead - bits;
bits = packet.BitsRead;
// get times
Times = new VorbisTime[(int)packet.ReadBits(6) + 1];
for (int i = 0; i < Times.Length; i++)
{
Times[i] = VorbisTime.Init(this, packet);
}
_timeHdrBits += packet.BitsRead - bits;
bits = packet.BitsRead;
// get floor
Floors = new VorbisFloor[(int)packet.ReadBits(6) + 1];
for (int i = 0; i < Floors.Length; i++)
{
Floors[i] = VorbisFloor.Init(this, packet);
}
_floorHdrBits += packet.BitsRead - bits;
bits = packet.BitsRead;
// get residue
Residues = new VorbisResidue[(int)packet.ReadBits(6) + 1];
for (int i = 0; i < Residues.Length; i++)
{
Residues[i] = VorbisResidue.Init(this, packet);
}
_resHdrBits += packet.BitsRead - bits;
bits = packet.BitsRead;
// get map
Maps = new VorbisMapping[(int)packet.ReadBits(6) + 1];
for (int i = 0; i < Maps.Length; i++)
{
Maps[i] = VorbisMapping.Init(this, packet);
}
_mapHdrBits += packet.BitsRead - bits;
bits = packet.BitsRead;
// get mode settings
Modes = new VorbisMode[(int)packet.ReadBits(6) + 1];
for (int i = 0; i < Modes.Length; i++)
{
Modes[i] = VorbisMode.Init(this, packet);
}
_modeHdrBits += packet.BitsRead - bits;
// check the framing bit
if (!packet.ReadBit())
{
throw new InvalidDataException();
}
++_glueBits;
_wasteHdrBits += 8 * packet.Length - packet.BitsRead;
_modeFieldBits = Utils.ilog(Modes.Length - 1);
return(true);
}
void LoadBooks(DataPacket packet)
{
packet.SkipBits(8);
if (!packet.ReadBytes(6).SequenceEqual(new byte[] { 0x76, 0x6f, 0x72, 0x62, 0x69, 0x73 }))
{
throw new InvalidDataException("Corrupted book header!");
}
var bits = packet.BitsRead;
_glueBits += packet.BitsRead;
// get books
Books = new VorbisCodebook[packet.ReadByte() + 1];
for (int i = 0; i < Books.Length; i++)
{
Books[i] = VorbisCodebook.Init(this, packet, i);
}
_bookBits += packet.BitsRead - bits;
bits = packet.BitsRead;
// get times
Times = new VorbisTime[(int)packet.ReadBits(6) + 1];
for (int i = 0; i < Times.Length; i++)
{
Times[i] = VorbisTime.Init(this, packet);
}
_timeHdrBits += packet.BitsRead - bits;
bits = packet.BitsRead;
// get floor
Floors = new VorbisFloor[(int)packet.ReadBits(6) + 1];
for (int i = 0; i < Floors.Length; i++)
{
Floors[i] = VorbisFloor.Init(this, packet);
}
_floorHdrBits += packet.BitsRead - bits;
bits = packet.BitsRead;
// get residue
Residues = new VorbisResidue[(int)packet.ReadBits(6) + 1];
for (int i = 0; i < Residues.Length; i++)
{
Residues[i] = VorbisResidue.Init(this, packet);
}
_resHdrBits += packet.BitsRead - bits;
bits = packet.BitsRead;
// get map
Maps = new VorbisMapping[(int)packet.ReadBits(6) + 1];
for (int i = 0; i < Maps.Length; i++)
{
Maps[i] = VorbisMapping.Init(this, packet);
}
_mapHdrBits += packet.BitsRead - bits;
bits = packet.BitsRead;
// get mode settings
Modes = new VorbisMode[(int)packet.ReadBits(6) + 1];
for (int i = 0; i < Modes.Length; i++)
{
Modes[i] = VorbisMode.Init(this, packet);
}
_modeHdrBits += packet.BitsRead - bits;
// check the framing bit
if (!packet.ReadBit())
{
throw new InvalidDataException();
}
++_glueBits;
_wasteHdrBits += 8 * packet.Length - packet.BitsRead;
_modeFieldBits = Utils.ilog(Modes.Length - 1);
}
bool UnpackPacket(DataPacket packet)
{
// make sure we're on an audio packet
if (packet.ReadBit())
{
// we really can't do anything... count the bits as waste
return false;
}
// get mode and prev/next flags
var modeBits = _modeFieldBits;
_mode = Modes[(int)packet.ReadBits(_modeFieldBits)];
if (_mode.BlockFlag)
{
_prevFlag = packet.ReadBit();
_nextFlag = packet.ReadBit();
modeBits += 2;
}
else
{
_prevFlag = _nextFlag = false;
}
if (packet.IsShort) return false;
var startBits = packet.BitsRead;
var halfBlockSize = _mode.BlockSize / 2;
// read the noise floor data (but don't decode yet)
for (int i = 0; i < _channels; i++)
{
_floorData[i] = _mode.Mapping.ChannelSubmap[i].Floor.UnpackPacket(packet, _mode.BlockSize, i);
_noExecuteChannel[i] = !_floorData[i].ExecuteChannel;
// go ahead and clear the residue buffers
Array.Clear(_residue[i], 0, halfBlockSize);
}
// make sure we handle no-energy channels correctly given the couplings...
foreach (var step in _mode.Mapping.CouplingSteps)
{
if (_floorData[step.Angle].ExecuteChannel || _floorData[step.Magnitude].ExecuteChannel)
{
_floorData[step.Angle].ForceEnergy = true;
_floorData[step.Magnitude].ForceEnergy = true;
}
}
var floorBits = packet.BitsRead - startBits;
startBits = packet.BitsRead;
foreach (var subMap in _mode.Mapping.Submaps)
{
for (int j = 0; j < _channels; j++)
{
if (_mode.Mapping.ChannelSubmap[j] != subMap)
{
_floorData[j].ForceNoEnergy = true;
}
}
var rTemp = subMap.Residue.Decode(packet, _noExecuteChannel, _channels, _mode.BlockSize);
for (int c = 0; c < _channels; c++)
{
var r = _residue[c];
var rt = rTemp[c];
for (int i = 0; i < halfBlockSize; i++)
{
r[i] += rt[i];
}
}
}
_glueBits += 1;
_modeBits += modeBits;
_floorBits += floorBits;
_resBits += packet.BitsRead - startBits;
_wasteBits += 8 * packet.Length - packet.BitsRead;
_packetCount += 1;
return true;
}
bool LoadBooks(DataPacket packet)
{
if (!CheckForHeader(packet, bookHeader))
{
return(false);
}
if (!_pagesSeen.Contains(_lastPageSeen = packet.PageSequenceNumber))
{
_pagesSeen.Add(_lastPageSeen);
}
var bits = packet.BitsRead;
_glueBits += packet.BitsRead;
// get books
Books = new VorbisCodebook[packet.ReadByte() + 1];
for (int i = 0; i < Books.Length; i++)
{
Books[i] = VorbisCodebook.Create(this, packet, i);
}
_bookBits += packet.BitsRead - bits;
bits = packet.BitsRead;
// get times
Times = new VorbisTime[(int)packet.ReadUBits(6) + 1];
for (int i = 0; i < Times.Length; i++)
{
Times[i] = VorbisTime.Init(this, packet);
}
_timeHdrBits += packet.BitsRead - bits;
bits = packet.BitsRead;
// get floor
Floors = new VorbisFloor[(int)packet.ReadUBits(6) + 1];
for (int i = 0; i < Floors.Length; i++)
{
Floors[i] = VorbisFloor.Create(this, packet);
}
_floorHdrBits += packet.BitsRead - bits;
bits = packet.BitsRead;
// get residue
Residues = new VorbisResidue[(int)packet.ReadUBits(6) + 1];
for (int i = 0; i < Residues.Length; i++)
{
Residues[i] = VorbisResidue.Init(this, packet);
}
_resHdrBits += packet.BitsRead - bits;
bits = packet.BitsRead;
// get map
Maps = new VorbisMapping[(int)packet.ReadUBits(6) + 1];
for (int i = 0; i < Maps.Length; i++)
{
Maps[i] = VorbisMapping.Create(this, packet);
}
_mapHdrBits += packet.BitsRead - bits;
bits = packet.BitsRead;
// get mode settings
Modes = new VorbisMode[(int)packet.ReadUBits(6) + 1];
for (int i = 0; i < Modes.Length; i++)
{
Modes[i] = VorbisMode.Init(this, packet);
}
_modeHdrBits += packet.BitsRead - bits;
// check the framing bit
if (!packet.ReadBit())
{
throw new InvalidDataException();
}
++_glueBits;
_wasteHdrBits += 8 * packet.Length - packet.BitsRead;
_modeFieldBits = Utils.ILog(Modes.Length - 1);
return(true);
}
private void LoadBooks(DataPacket packet)
{
packet.SkipBits(8);
if (!Enumerable.SequenceEqual <byte>((IEnumerable <byte>)packet.ReadBytes(6), (IEnumerable <byte>) new byte[6]
{
(byte)118,
(byte)111,
(byte)114,
(byte)98,
(byte)105,
(byte)115
}))
{
throw new InvalidDataException("Corrupted book header!");
}
long bitsRead1 = packet.BitsRead;
this._glueBits += packet.BitsRead;
this.Books = new VorbisCodebook[(int)packet.ReadByte() + 1];
for (int number = 0; number < this.Books.Length; ++number)
{
this.Books[number] = VorbisCodebook.Init(this, packet, number);
}
this._bookBits += packet.BitsRead - bitsRead1;
long bitsRead2 = packet.BitsRead;
this.Times = new VorbisTime[(int)packet.ReadBits(6) + 1];
for (int index = 0; index < this.Times.Length; ++index)
{
this.Times[index] = VorbisTime.Init(this, packet);
}
this._timeHdrBits += packet.BitsRead - bitsRead2;
long bitsRead3 = packet.BitsRead;
this.Floors = new VorbisFloor[(int)packet.ReadBits(6) + 1];
for (int index = 0; index < this.Floors.Length; ++index)
{
this.Floors[index] = VorbisFloor.Init(this, packet);
}
this._floorHdrBits += packet.BitsRead - bitsRead3;
long bitsRead4 = packet.BitsRead;
this.Residues = new VorbisResidue[(int)packet.ReadBits(6) + 1];
for (int index = 0; index < this.Residues.Length; ++index)
{
this.Residues[index] = VorbisResidue.Init(this, packet);
}
this._resHdrBits += packet.BitsRead - bitsRead4;
long bitsRead5 = packet.BitsRead;
this.Maps = new VorbisMapping[(int)packet.ReadBits(6) + 1];
for (int index = 0; index < this.Maps.Length; ++index)
{
this.Maps[index] = VorbisMapping.Init(this, packet);
}
this._mapHdrBits += packet.BitsRead - bitsRead5;
long bitsRead6 = packet.BitsRead;
this.Modes = new VorbisMode[(int)packet.ReadBits(6) + 1];
for (int index = 0; index < this.Modes.Length; ++index)
{
this.Modes[index] = VorbisMode.Init(this, packet);
}
this._modeHdrBits += packet.BitsRead - bitsRead6;
if (!packet.ReadBit())
{
throw new InvalidDataException();
}
++this._glueBits;
this._wasteHdrBits += (long)(8 * packet.Length) - packet.BitsRead;
this._modeFieldBits = Utils.ilog(this.Modes.Length - 1);
}
public bool UnpackPacket(DataPacket packet)
{
if (packet.ReadBit())
{
return(false);
}
int num = _modeFieldBits;
_mode = Modes[(uint)packet.ReadBits(_modeFieldBits)];
if (_mode.BlockFlag)
{
_prevFlag = packet.ReadBit();
_nextFlag = packet.ReadBit();
num += 2;
}
else
{
_prevFlag = (_nextFlag = false);
}
if (packet.IsShort)
{
return(false);
}
long bitsRead = packet.BitsRead;
int num2 = _mode.BlockSize / 2;
for (int i = 0; i < _channels; i++)
{
_floorData[i] = _mode.Mapping.ChannelSubmap[i].Floor.UnpackPacket(packet, _mode.BlockSize, i);
_noExecuteChannel[i] = !_floorData[i].ExecuteChannel;
Array.Clear(_residue[i], 0, num2);
}
VorbisMapping.CouplingStep[] couplingSteps = _mode.Mapping.CouplingSteps;
foreach (VorbisMapping.CouplingStep couplingStep in couplingSteps)
{
if (_floorData[couplingStep.Angle].ExecuteChannel || _floorData[couplingStep.Magnitude].ExecuteChannel)
{
_floorData[couplingStep.Angle].ForceEnergy = true;
_floorData[couplingStep.Magnitude].ForceEnergy = true;
}
}
long num3 = packet.BitsRead - bitsRead;
bitsRead = packet.BitsRead;
VorbisMapping.Submap[] submaps = _mode.Mapping.Submaps;
foreach (VorbisMapping.Submap submap in submaps)
{
for (int k = 0; k < _channels; k++)
{
if (_mode.Mapping.ChannelSubmap[k] != submap)
{
_floorData[k].ForceNoEnergy = true;
}
}
float[][] array = submap.Residue.Decode(packet, _noExecuteChannel, _channels, _mode.BlockSize);
for (int l = 0; l < _channels; l++)
{
float[] array2 = _residue[l];
float[] array3 = array[l];
for (int m = 0; m < num2; m++)
{
array2[m] += array3[m];
}
}
}
_glueBits++;
_modeBits += num;
_floorBits += num3;
_resBits += packet.BitsRead - bitsRead;
_wasteBits += 8 * packet.Length - packet.BitsRead;
_packetCount++;
return(true);
}
public bool LoadBooks(DataPacket packet)
{
if (!packet.ReadBytes(7).SequenceEqual(new byte[7]
{
5,
118,
111,
114,
98,
105,
115
}))
{
return(false);
}
if (!_pagesSeen.Contains(_lastPageSeen = packet.PageSequenceNumber))
{
_pagesSeen.Add(_lastPageSeen);
}
long bitsRead = packet.BitsRead;
_glueBits += packet.BitsRead;
Books = new VorbisCodebook[packet.ReadByte() + 1];
for (int i = 0; i < Books.Length; i++)
{
Books[i] = VorbisCodebook.Init(this, packet, i);
}
_bookBits += packet.BitsRead - bitsRead;
bitsRead = packet.BitsRead;
Times = new VorbisTime[(int)packet.ReadBits(6) + 1];
for (int j = 0; j < Times.Length; j++)
{
Times[j] = VorbisTime.Init(this, packet);
}
_timeHdrBits += packet.BitsRead - bitsRead;
bitsRead = packet.BitsRead;
Floors = new VorbisFloor[(int)packet.ReadBits(6) + 1];
for (int k = 0; k < Floors.Length; k++)
{
Floors[k] = VorbisFloor.Init(this, packet);
}
_floorHdrBits += packet.BitsRead - bitsRead;
bitsRead = packet.BitsRead;
Residues = new VorbisResidue[(int)packet.ReadBits(6) + 1];
for (int l = 0; l < Residues.Length; l++)
{
Residues[l] = VorbisResidue.Init(this, packet);
}
_resHdrBits += packet.BitsRead - bitsRead;
bitsRead = packet.BitsRead;
Maps = new VorbisMapping[(int)packet.ReadBits(6) + 1];
for (int m = 0; m < Maps.Length; m++)
{
Maps[m] = VorbisMapping.Init(this, packet);
}
_mapHdrBits += packet.BitsRead - bitsRead;
bitsRead = packet.BitsRead;
Modes = new VorbisMode[(int)packet.ReadBits(6) + 1];
for (int n = 0; n < Modes.Length; n++)
{
Modes[n] = VorbisMode.Init(this, packet);
}
_modeHdrBits += packet.BitsRead - bitsRead;
if (!packet.ReadBit())
{
throw new InvalidDataException();
}
_glueBits++;
_wasteHdrBits += 8 * packet.Length - packet.BitsRead;
_modeFieldBits = Utils.ilog(Modes.Length - 1);
return(true);
}