commonvar.h

这是G.723和G.729的音频编解码的源代码

const int AP_Cur_Coeff[64]={
4,5,5,5,5,5,5,4,
5,5,5,5,5,5,5,5,
5,5,6,6,6,6,5,5,
5,5,6,6,6,6,5,5,
5,5,6,6,6,6,5,5,
5,5,6,6,6,6,5,5,
5,5,5,5,5,5,5,5,
4,5,5,5,5,5,5,4
};
const int AP_Up_Coeff[64]={
2,2,2,2,2,2,2,2,
1,1,2,2,2,2,1,1,
1,1,1,1,1,1,1,1,
1,1,1,1,1,1,1,1,
0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0
};
const int AP_Down_Coeff[64]={
0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,
1,1,1,1,1,1,1,1,
1,1,1,1,1,1,1,1,
1,1,2,2,2,2,1,1,
2,2,2,2,2,2,2,2
};
const int AP_Left_Coeff[64]={
2,1,1,1,0,0,0,0,
2,2,1,1,0,0,0,0,
2,2,1,1,0,0,0,0,
2,2,1,1,0,0,0,0,
2,2,1,1,0,0,0,0,
2,2,1,1,0,0,0,0,
2,2,1,1,0,0,0,0,
2,1,1,1,0,0,0,0
};
const int AP_Right_Coeff[64]={
0,0,0,0,1,1,1,2,
0,0,0,0,1,1,2,2,
0,0,0,0,1,1,2,2,
0,0,0,0,1,1,2,2,
0,0,0,0,1,1,2,2,
0,0,0,0,1,1,2,2,
0,0,0,0,1,1,2,2,
0,0,0,0,1,1,1,2
};

const DWORD bit_set_mask[]=
{0x00000001,0x00000002,0x00000004,0x00000008,
 0x00000010,0x00000020,0x00000040,0x00000080,
 0x00000100,0x00000200,0x00000400,0x00000800,
 0x00001000,0x00002000,0x00004000,0x00008000,
 0x00010000,0x00020000,0x00040000,0x00080000,
 0x00100000,0x00200000,0x00400000,0x00800000,
 0x01000000,0x02000000,0x04000000,0x08000000,
 0x10000000,0x20000000,0x40000000,0x80000000
};

const DWORD msk[33] =
{
  0x00000000,0x00000001,0x00000003,0x00000007,
  0x0000000f,0x0000001f,0x0000003f,0x0000007f,
  0x000000ff,0x000001ff,0x000003ff,0x000007ff,
  0x00000fff,0x00001fff,0x00003fff,0x00007fff,
  0x0000ffff,0x0001ffff,0x0003ffff,0x0007ffff,
  0x000fffff,0x001fffff,0x003fffff,0x007fffff,
  0x00ffffff,0x01ffffff,0x03ffffff,0x07ffffff,
  0x0fffffff,0x1fffffff,0x3fffffff,0x7fffffff,
  0xffffffff
};

const int bquant[] = {5,6,7,8};

const int	zigzag[64] = {
  0, 1, 5, 6,14,15,27,28,
  2, 4, 7,13,16,26,29,42,
  3, 8,12,17,25,30,41,43,
  9,11,18,24,31,40,44,53,
  10,19,23,32,39,45,52,54,
  20,22,33,38,46,51,55,60,
  21,34,37,47,50,56,59,61,
  35,36,48,49,57,58,62,63,
};