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Src/h264dec/ldecod/inc/quant.h Normal file
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/*!
************************************************************************
* \file quant.h
*
* \brief
* definitions for quantization functions
*
* \author
*
************************************************************************
*/
#ifndef _QUANT_H_
#define _QUANT_H_
// exported variables
static const int dequant_coef8[6][64] =
{
{
20, 19, 25, 19, 20, 19, 25, 19,
19, 18, 24, 18, 19, 18, 24, 18,
25, 24, 32, 24, 25, 24, 32, 24,
19, 18, 24, 18, 19, 18, 24, 18,
20, 19, 25, 19, 20, 19, 25, 19,
19, 18, 24, 18, 19, 18, 24, 18,
25, 24, 32, 24, 25, 24, 32, 24,
19, 18, 24, 18, 19, 18, 24, 18
},
{
22, 21, 28, 21, 22, 21, 28, 21,
21, 19, 26, 19, 21, 19, 26, 19,
28, 26, 35, 26, 28, 26, 35, 26,
21, 19, 26, 19, 21, 19, 26, 19,
22, 21, 28, 21, 22, 21, 28, 21,
21, 19, 26, 19, 21, 19, 26, 19,
28, 26, 35, 26, 28, 26, 35, 26,
21, 19, 26, 19, 21, 19, 26, 19
},
{
26, 24, 33, 24, 26, 24, 33, 24,
24, 23, 31, 23, 24, 23, 31, 23,
33, 31, 42, 31, 33, 31, 42, 31,
24, 23, 31, 23, 24, 23, 31, 23,
26, 24, 33, 24, 26, 24, 33, 24,
24, 23, 31, 23, 24, 23, 31, 23,
33, 31, 42, 31, 33, 31, 42, 31,
24, 23, 31, 23, 24, 23, 31, 23
},
{
28, 26, 35, 26, 28, 26, 35, 26,
26, 25, 33, 25, 26, 25, 33, 25,
35, 33, 45, 33, 35, 33, 45, 33,
26, 25, 33, 25, 26, 25, 33, 25,
28, 26, 35, 26, 28, 26, 35, 26,
26, 25, 33, 25, 26, 25, 33, 25,
35, 33, 45, 33, 35, 33, 45, 33,
26, 25, 33, 25, 26, 25, 33, 25
},
{
32, 30, 40, 30, 32, 30, 40, 30,
30, 28, 38, 28, 30, 28, 38, 28,
40, 38, 51, 38, 40, 38, 51, 38,
30, 28, 38, 28, 30, 28, 38, 28,
32, 30, 40, 30, 32, 30, 40, 30,
30, 28, 38, 28, 30, 28, 38, 28,
40, 38, 51, 38, 40, 38, 51, 38,
30, 28, 38, 28, 30, 28, 38, 28
},
{
36, 34, 46, 34, 36, 34, 46, 34,
34, 32, 43, 32, 34, 32, 43, 32,
46, 43, 58, 43, 46, 43, 58, 43,
34, 32, 43, 32, 34, 32, 43, 32,
36, 34, 46, 34, 36, 34, 46, 34,
34, 32, 43, 32, 34, 32, 43, 32,
46, 43, 58, 43, 46, 43, 58, 43,
34, 32, 43, 32, 34, 32, 43, 32
}
};
//! Dequantization coefficients
static const int dequant_coef[6][4][4] = {
{
{ 10, 13, 10, 13},
{ 13, 16, 13, 16},
{ 10, 13, 10, 13},
{ 13, 16, 13, 16}},
{
{ 11, 14, 11, 14},
{ 14, 18, 14, 18},
{ 11, 14, 11, 14},
{ 14, 18, 14, 18}},
{
{ 13, 16, 13, 16},
{ 16, 20, 16, 20},
{ 13, 16, 13, 16},
{ 16, 20, 16, 20}},
{
{ 14, 18, 14, 18},
{ 18, 23, 18, 23},
{ 14, 18, 14, 18},
{ 18, 23, 18, 23}},
{
{ 16, 20, 16, 20},
{ 20, 25, 20, 25},
{ 16, 20, 16, 20},
{ 20, 25, 20, 25}},
{
{ 18, 23, 18, 23},
{ 23, 29, 23, 29},
{ 18, 23, 18, 23},
{ 23, 29, 23, 29}}
};
static const int quant_coef[6][4][4] = {
{
{ 13107, 8066, 13107, 8066},
{ 8066, 5243, 8066, 5243},
{ 13107, 8066, 13107, 8066},
{ 8066, 5243, 8066, 5243}},
{
{ 11916, 7490, 11916, 7490},
{ 7490, 4660, 7490, 4660},
{ 11916, 7490, 11916, 7490},
{ 7490, 4660, 7490, 4660}},
{
{ 10082, 6554, 10082, 6554},
{ 6554, 4194, 6554, 4194},
{ 10082, 6554, 10082, 6554},
{ 6554, 4194, 6554, 4194}},
{
{ 9362, 5825, 9362, 5825},
{ 5825, 3647, 5825, 3647},
{ 9362, 5825, 9362, 5825},
{ 5825, 3647, 5825, 3647}},
{
{ 8192, 5243, 8192, 5243},
{ 5243, 3355, 5243, 3355},
{ 8192, 5243, 8192, 5243},
{ 5243, 3355, 5243, 3355}},
{
{ 7282, 4559, 7282, 4559},
{ 4559, 2893, 4559, 2893},
{ 7282, 4559, 7282, 4559},
{ 4559, 2893, 4559, 2893}}
};
// SP decoding parameter (EQ. 8-425)
static const int A[4][4] = {
{ 16, 20, 16, 20},
{ 20, 25, 20, 25},
{ 16, 20, 16, 20},
{ 20, 25, 20, 25}
};
// exported functions
// quantization initialization
extern void init_qp_process (VideoParameters *p_Vid);
extern void free_qp_matrices(VideoParameters *p_Vid);
// For Q-matrix
extern void assign_quant_params (Slice *currslice);
extern void CalculateQuant4x4Param(Slice *currslice);
#endif