armCOMM_IDCTTable.c revision 0c1bc742181ded4930842b46e9507372f0b1b963 
1/**
2 *
3 * File Name:  armCOMM_IDCTTable.c
4 * OpenMAX DL: v1.0.2
5 * Revision:   12290
6 * Date:       Wednesday, April 9, 2008
7 *
8 * (c) Copyright 2007-2008 ARM Limited. All Rights Reserved.
9 *
10 *
11 *
12 * File: armCOMM_IDCTTable.c
13 * Brief: Defines Tables used in IDCT computation
14 *
15 */
16
17#include "armCOMM_IDCTTable.h"
18
19     /*  Table of s(u)*A(u)*A(v)/16 at Q15
20      *  s(u)=1.0 0 <= u <= 5
21      *  s(6)=2.0
22      *  s(7)=4.0
23      *  A(0) = 2*sqrt(2)
24      *  A(u) = 4*cos(u*pi/16)  for (u!=0)
25	  */
26
27__align(4) const OMX_U16 armCOMM_IDCTPreScale [64] =
28{
29    0x4000, 0x58c5, 0x539f, 0x4b42, 0x4000, 0x3249, 0x4546, 0x46a1,
30    0x58c5, 0x7b21, 0x73fc, 0x6862, 0x58c5, 0x45bf, 0x6016, 0x61f8,
31    0x539f, 0x73fc, 0x6d41, 0x6254, 0x539f, 0x41b3, 0x5a82, 0x5c48,
32    0x4b42, 0x6862, 0x6254, 0x587e, 0x4b42, 0x3b21, 0x5175, 0x530d,
33    0x4000, 0x58c5, 0x539f, 0x4b42, 0x4000, 0x3249, 0x4546, 0x46a1,
34    0x3249, 0x45bf, 0x41b3, 0x3b21, 0x3249, 0x2782, 0x366d, 0x377e,
35    0x22a3, 0x300b, 0x2d41, 0x28ba, 0x22a3, 0x1b37, 0x257e, 0x263a,
36    0x11a8, 0x187e, 0x1712, 0x14c3, 0x11a8, 0x0de0, 0x131d, 0x137d
37};
38    /* Above array armCOMM_IDCTPreScale,  in Q23 format */
39const OMX_U32 armCOMM_IDCTPreScaleU32 [64] =
40{
41    0x400000, 0x58c543, 0x539eba, 0x4b418c, 0x400000, 0x3248d4, 0x4545ea, 0x46a157,
42    0x58c543, 0x7b20d8, 0x73fbfc, 0x686214, 0x58c543, 0x45bf1f, 0x6015a5, 0x61f78b,
43    0x539eba, 0x73fbfc, 0x6d413d, 0x6253a6, 0x539eba, 0x41b328, 0x5a827a, 0x5c4869,
44    0x4b418c, 0x686214, 0x6253a6, 0x587de3, 0x4b418c, 0x3b20d8, 0x5174e0, 0x530d69,
45    0x400000, 0x58c543, 0x539eba, 0x4b418c, 0x400000, 0x3248d4, 0x4545ea, 0x46a157,
46    0x3248d4, 0x45bf1f, 0x41b328, 0x3b20d8, 0x3248d4, 0x27821d, 0x366d72, 0x377e6b,
47    0x22a2f5, 0x300ad3, 0x2d413d, 0x28ba70, 0x22a2f5, 0x1b36b9, 0x257d86, 0x26398d,
48    0x11a856, 0x187de3, 0x17121a, 0x14c35a, 0x11a856, 0x0ddf9b, 0x131cc7, 0x137ca2
49};
50
51const OMX_U16 armCOMM_IDCTCoef [4] =
52{
53    0x5a82, /* InvSqrt2 */
54    0x30fc, /* SinPIBy8 */
55    0x7642, /* CosPIBy8 */
56    0x0000
57};
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