public Class140(Class144 class144_0, byte[] byte_0, Class122 class122_0)
{
int num = 0;
int num2 = 0;
Class152 @class = new Class152(16);
bool flag = class122_0 != null && class122_0.vmethod_2() != class122_0.vmethod_1();
bool flag2 = class122_0 != null && class122_0.vmethod_2() == class122_0.vmethod_1();
@class.vmethod_1(byte_0[0]);
@class.vmethod_1(byte_0[1]);
if ((@class.vmethod_3(1) & 3) != 0)
{
throw new BadHeaderException("Bad Magic Number: " + (int)(@class.vmethod_3(1) & 255));
}
for (int i = 0; i < 2; i++)
{
if (class144_0.vmethod_11(8) == 255)
{
throw new BadHeaderException("Found sync byte");
}
@class.vmethod_1((byte)class144_0.vmethod_10(8));
}
int num3 = @class.vmethod_3(2) >> 4 & 15;
switch (num3)
{
case 0:
if (!flag2)
{
throw new BadHeaderException("Unknown Block Size (0)");
}
this.int_0 = class122_0.vmethod_2();
break;
case 1:
this.int_0 = 192;
break;
case 2:
case 3:
case 4:
case 5:
this.int_0 = 576 << num3 - 2;
break;
case 6:
case 7:
num = num3;
break;
case 8:
case 9:
case 10:
case 11:
case 12:
case 13:
case 14:
case 15:
this.int_0 = 256 << num3 - 8;
break;
}
int num4 = (int)(@class.vmethod_3(2) & 15);
switch (num4)
{
case 0:
if (class122_0 == null)
{
throw new BadHeaderException("Bad Sample Rate (0)");
}
this.int_1 = class122_0.vmethod_6();
break;
case 1:
case 2:
case 3:
throw new BadHeaderException("Bad Sample Rate (" + num4 + ")");
case 4:
this.int_1 = 8000;
break;
case 5:
this.int_1 = 16000;
break;
case 6:
this.int_1 = 22050;
break;
case 7:
this.int_1 = 24000;
break;
case 8:
this.int_1 = 32000;
break;
case 9:
this.int_1 = 44100;
break;
case 10:
this.int_1 = 48000;
break;
case 11:
this.int_1 = 96000;
break;
case 12:
case 13:
case 14:
num2 = num4;
break;
case 15:
throw new BadHeaderException("Bad Sample Rate (" + num4 + ")");
}
int num5 = @class.vmethod_3(3) >> 4 & 15;
if ((num5 & 8) != 0)
{
this.int_2 = 2;
switch (num5 & 7)
{
case 0:
this.int_3 = 1;
break;
case 1:
this.int_3 = 2;
break;
case 2:
this.int_3 = 3;
break;
default:
throw new BadHeaderException("Bad Channel Assignment (" + num5 + ")");
}
}
else
{
this.int_2 = num5 + 1;
this.int_3 = 0;
}
int num6 = (@class.vmethod_3(3) & 14) >> 1;
switch (num6)
{
case 0:
if (class122_0 == null)
{
throw new BadHeaderException("Bad BPS (" + num6 + ")");
}
this.int_4 = class122_0.vmethod_7();
break;
case 1:
this.int_4 = 8;
break;
case 2:
this.int_4 = 12;
break;
case 3:
case 7:
throw new BadHeaderException("Bad BPS (" + num6 + ")");
case 4:
this.int_4 = 16;
break;
case 5:
this.int_4 = 20;
break;
case 6:
this.int_4 = 24;
break;
}
if ((@class.vmethod_3(3) & 1) != 0)
{
throw new BadHeaderException("this should be a zero padding bit");
}
if (num != 0 && flag)
{
this.long_0 = class144_0.vmethod_19(@class);
if (this.long_0 == -1L)
{
throw new BadHeaderException("Bad Sample Number");
}
}
else
{
int num7 = class144_0.vmethod_18(@class);
if ((long)num7 == 4294967295L)
{
throw new BadHeaderException("Bad Last Frame");
}
this.long_0 = (long)class122_0.vmethod_2() * (long)num7;
}
if (num != 0)
{
int num8 = class144_0.vmethod_10(8);
@class.vmethod_1((byte)num8);
if (num == 7)
{
int num9 = class144_0.vmethod_10(8);
@class.vmethod_1((byte)num9);
num8 = (num8 << 8 | num9);
}
this.int_0 = num8 + 1;
}
if (num2 != 0)
{
int num10 = class144_0.vmethod_10(8);
@class.vmethod_1((byte)num10);
if (num2 != 12)
{
int num11 = class144_0.vmethod_10(8);
@class.vmethod_1((byte)num11);
num10 = (num10 << 8 | num11);
}
if (num2 == 12)
{
this.int_1 = num10 * 1000;
}
else if (num2 == 13)
{
this.int_1 = num10;
}
else
{
this.int_1 = num10 * 10;
}
}
byte b = (byte)class144_0.vmethod_10(8);
if (Class149.smethod_0(@class.vmethod_2(), @class.vmethod_0()) != b)
{
throw new BadHeaderException("STREAM_DECODER_ERROR_STATUS_BAD_HEADER");
}
}
public virtual long vmethod_19(Class152 class152_0)
{
int num = this.vmethod_10(8);
if (class152_0 != null)
{
class152_0.vmethod_1((byte)num);
}
long num2;
int i;
if ((num & 128) == 0)
{
num2 = (long)num;
i = 0;
}
else if ((num & 192) != 0 && (num & 32) == 0)
{
num2 = (long)(num & 31);
i = 1;
}
else if ((num & 224) != 0 && (num & 16) == 0)
{
num2 = (long)(num & 15);
i = 2;
}
else if ((num & 240) != 0 && (num & 8) == 0)
{
num2 = (long)(num & 7);
i = 3;
}
else if ((num & 248) != 0 && (num & 4) == 0)
{
num2 = (long)(num & 3);
i = 4;
}
else if ((num & 252) != 0 && (num & 2) == 0)
{
num2 = (long)(num & 1);
i = 5;
}
else
{
if ((num & 254) == 0 || (num & 1) != 0)
{
return -1L;
}
num2 = 0L;
i = 6;
}
while (i > 0)
{
num = this.vmethod_11(8);
if ((num & 128) == 0 || (num & 64) != 0)
{
return -1L;
}
num = this.vmethod_10(8);
if (class152_0 != null)
{
class152_0.vmethod_1((byte)num);
}
num2 <<= 6;
num2 |= (long)(num & 63);
i--;
}
return num2;
}
