internal override VorbisFloor.PacketData UnpackPacket(DataPacket packet, int blockSize)
{
VorbisFloor.Floor0.PacketData0 packetData0_1 = new VorbisFloor.Floor0.PacketData0();
packetData0_1.BlockSize = blockSize;
VorbisFloor.Floor0.PacketData0 packetData0_2 = packetData0_1;
packetData0_2.Amp = (float)packet.ReadBits(this._ampBits);
if ((double)packetData0_2.Amp > 0.0)
{
try
{
List <float> list = new List <float>();
uint num = (uint)packet.ReadBits(this._bookBits);
if ((long)num >= (long)this._books.Length)
{
throw new InvalidDataException();
}
VorbisCodebook vorbisCodebook = this._books[(IntPtr)num];
for (int index1 = 0; index1 < this._order; ++index1)
{
int index2 = vorbisCodebook.DecodeScalar(packet);
for (int index3 = 0; index3 < vorbisCodebook.Dimensions; ++index3)
{
list.Add(vorbisCodebook[index2, index3]);
}
}
packetData0_2.Coeff = list.ToArray();
}
catch (EndOfStreamException ex)
{
packetData0_2.Amp = 0.0f;
}
}
return((VorbisFloor.PacketData)packetData0_2);
}
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;
}
internal override VorbisFloor.PacketData UnpackPacket(DataPacket packet, int blockSize)
{
VorbisFloor.Floor0.PacketData0 packetData0_1 = new VorbisFloor.Floor0.PacketData0();
packetData0_1.BlockSize = blockSize;
VorbisFloor.Floor0.PacketData0 packetData0_2 = packetData0_1;
packetData0_2.Amp = (float) packet.ReadBits(this._ampBits);
if ((double) packetData0_2.Amp > 0.0)
{
try
{
List<float> list = new List<float>();
uint num = (uint) packet.ReadBits(this._bookBits);
if ((long) num >= (long) this._books.Length)
throw new InvalidDataException();
VorbisCodebook vorbisCodebook = this._books[(IntPtr) num];
for (int index1 = 0; index1 < this._order; ++index1)
{
int index2 = vorbisCodebook.DecodeScalar(packet);
for (int index3 = 0; index3 < vorbisCodebook.Dimensions; ++index3)
list.Add(vorbisCodebook[index2, index3]);
}
packetData0_2.Coeff = list.ToArray();
}
catch (EndOfStreamException ex)
{
packetData0_2.Amp = 0.0f;
}
}
return (VorbisFloor.PacketData) packetData0_2;
}