internal static VorbisFloor Init(VorbisStreamDecoder vorbis, DataPacket packet)
{
var type = (int)packet.ReadBits(16);
VorbisFloor floor = null;
switch (type)
{
case 0: floor = new Floor0(vorbis); break;
case 1: floor = new Floor1(vorbis); break;
}
if (floor == null)
{
throw new InvalidDataException();
}
floor.Init(packet);
return(floor);
}
internal static VorbisFloor Init(VorbisStreamDecoder vorbis, DataPacket packet)
{
int num = (int)packet.ReadBits(16);
VorbisFloor vorbisFloor = (VorbisFloor)null;
switch (num)
{
case 0:
vorbisFloor = (VorbisFloor) new VorbisFloor.Floor0(vorbis);
break;
case 1:
vorbisFloor = (VorbisFloor) new VorbisFloor.Floor1(vorbis);
break;
}
if (vorbisFloor == null)
{
throw new InvalidDataException();
}
vorbisFloor.Init(packet);
return(vorbisFloor);
}
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 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 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);
}
private bool[] UnwrapPosts(VorbisFloor.Floor1.PacketData1 data)
{
bool[] flagArray = ACache.Get<bool>(data.PostCount, false);
flagArray[0] = true;
flagArray[1] = true;
int[] buffer = ACache.Get<int>(data.PostCount);
buffer[0] = data.Posts[0];
buffer[1] = data.Posts[1];
for (int index1 = 2; index1 < data.PostCount; ++index1)
{
int index2 = this._lNeigh[index1];
int index3 = this._hNeigh[index1];
int num1 = this.RenderPoint(this._xList[index2], buffer[index2], this._xList[index3], buffer[index3], this._xList[index1]);
int num2 = data.Posts[index1];
int num3 = this._range - num1;
int num4 = num1;
int num5 = num3 >= num4 ? num4 * 2 : num3 * 2;
if (num2 != 0)
{
flagArray[index2] = true;
flagArray[index3] = true;
flagArray[index1] = true;
buffer[index1] = num2 < num5 ? (num2 % 2 != 1 ? num1 + num2 / 2 : num1 - (num2 + 1) / 2) : (num3 <= num4 ? num1 - num2 + num3 - 1 : num2 - num4 + num1);
}
else
{
flagArray[index1] = false;
buffer[index1] = num1;
}
}
for (int index = 0; index < data.PostCount; ++index)
data.Posts[index] = buffer[index];
ACache.Return<int>(ref buffer);
return flagArray;
}
internal override void Apply(VorbisFloor.PacketData packetData, float[] residue)
{
VorbisFloor.Floor1.PacketData1 data = packetData as VorbisFloor.Floor1.PacketData1;
if (data == null)
throw new InvalidDataException("Incorrect packet data!");
if (data.Posts == null)
return;
bool[] buffer = this.UnwrapPosts(data);
int num1 = data.BlockSize / 2;
int x0 = 0;
int num2 = data.Posts[0] * this._multiplier;
for (int index1 = 1; index1 < data.PostCount; ++index1)
{
int index2 = this._sortIdx[index1];
if (buffer[index2])
{
int val1 = this._xList[index2];
int y1 = data.Posts[index2] * this._multiplier;
if (x0 < num1)
this.RenderLineMulti(x0, num2, Math.Min(val1, num1), y1, residue);
x0 = val1;
num2 = y1;
}
if (x0 >= num1)
break;
}
ACache.Return<bool>(ref buffer);
if (x0 < num1)
this.RenderLineMulti(x0, num2, num1, num2, residue);
ACache.Return<int>(ref data.Posts);
}
internal abstract void Apply(VorbisFloor.PacketData packetData, float[] residue);
internal override void Apply(VorbisFloor.PacketData packetData, float[] residue)
{
VorbisFloor.Floor0.PacketData0 packetData0 = packetData as VorbisFloor.Floor0.PacketData0;
if (packetData0 == null)
throw new ArgumentException("Incorrect packet data!");
if ((double) packetData0.Amp <= 0.0)
return;
float[] numArray = this._barkMaps[packetData0.BlockSize];
int index = 0;
label_9:
if (index >= packetData0.BlockSize)
return;
double d = Math.PI * (double) numArray[index] / (double) this._bark_map_size;
float num1;
int num2;
float num3;
int num4;
if (this._order % 2 == 1)
{
num1 = (float) (1.0 - Math.Pow(Math.Cos(d), 2.0));
num2 = 3;
num3 = 0.25f;
num4 = 1;
}
else
{
num1 = (float) (1.0 - Math.Cos(d));
num2 = 2;
num3 = (float) (1.0 + Math.Cos(d));
num4 = 2;
}
double num5 = (double) num1 * (double) (this._order - num2) / (4.0 * Math.Pow(Math.Cos((double) packetData0.Coeff[1]) - Math.Cos(d), 2.0) * (4.0 * Math.Pow(Math.Cos((double) packetData0.Coeff[3]) - Math.Cos(d), 2.0)) * (4.0 * Math.Pow(Math.Cos((double) packetData0.Coeff[5]) - Math.Cos(d), 2.0)));
double num6 = (double) num3 * (double) (this._order - num4) / (4.0 * Math.Pow(Math.Cos((double) packetData0.Coeff[0]) - Math.Cos(d), 2.0) * (4.0 * Math.Pow(Math.Cos((double) packetData0.Coeff[2]) - Math.Cos(d), 2.0)) * (4.0 * Math.Pow(Math.Cos((double) packetData0.Coeff[4]) - Math.Cos(d), 2.0)));
float num7 = (float) Math.Exp(0.11512925 * ((double) packetData0.Amp * (double) this._ampOfs / ((double) ((1 << this._ampBits) - 1) * Math.Sqrt(num5 + num6)) - (double) this._ampOfs));
float num8;
do
{
num8 = numArray[index];
residue[index] *= num7;
++index;
}
while ((double) numArray[index] == (double) num8);
goto label_9;
}
