📄 vlc_codes.h
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#ifndef _VLC_CODES_H_
#define _VLC_CODES_H_
#include "../portab.h"
#include "mbcoding.h"
#define VLC_ERROR (-1)
#define ESCAPE 7167
typedef struct
{
uint32_t code;
int8_t len;
} VLC;
static VLC *DCT3D[2];
/******************************************************************
* common tables between encoder/decoder *
******************************************************************/
/* constants taken from momusys/vm_common/inlcude/max_level.h */
static char max_level[4][64] = {
{ // intra, last = 0
27, 10, 5, 4, 3, 3, 3, 3,
2, 2, 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, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
},
{ // intra, last = 1
8, 3, 2, 2, 2, 2, 2, 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, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
},
{ // inter, last = 0
12, 6, 4, 3, 3, 3, 3, 2,
2, 2, 2, 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, 0, 0, 0, 0, 0,
},
{ // inter, last = 1
3, 2, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 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,
}
};
static char max_run[4][256] = {
{ // intra, last = 0
0, 14, 9, 7, 3, 2, 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, 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, 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, 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, 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, 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, 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, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
},
{ // intra, last = 1
0, 20, 6, 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, 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, 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, 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, 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, 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, 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, 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,
},
{ // inter, last = 0
0, 26, 10, 6, 2, 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, 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, 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, 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, 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, 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, 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, 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,
},
{ // inter, last = 1
0, 40, 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, 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, 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, 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, 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, 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, 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, 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,
}
};
/******************************************************************
* encoder tables *
******************************************************************/
/* DCT coefficients. Four tables, two for last = 0, two for last = 1.
the sign bit must be added afterwards. */
/* first part of coeffs for last = 0. Indexed by [run][level-1] */
static VLC coeff_tab0[2][12] = {
/*
run = 0
*/
{
{0x02, 2}, {0x0f, 4}, {0x15, 6}, {0x17, 7},
{0x1f, 8}, {0x25, 9}, {0x24, 9}, {0x21, 10},
{0x20, 10}, {0x07, 11}, {0x06, 11}, {0x20, 11}
},
/*
run = 1
*/
{
{0x06, 3}, {0x14, 6}, {0x1e, 8}, {0x0f, 10},
{0x21, 11}, {0x50, 12}, {0x00, 0}, {0x00, 0},
{0x00, 0}, {0x00, 0}, {0x00, 0}, {0x00, 0}
}
};
/* rest of coeffs for last = 0. indexing by [run-2][level-1] */
static VLC coeff_tab1[25][4] = {
/*
run = 2
*/
{
{0x0e, 4}, {0x1d, 8}, {0x0e, 10}, {0x51, 12}
},
/*
run = 3
*/
{
{0x0d, 5}, {0x23, 9}, {0x0d, 10}, {0x00, 0}
},
/*
run = 4-26
*/
{
{0x0c, 5}, {0x22, 9}, {0x52, 12}, {0x00, 0}
},
{
{0x0b, 5}, {0x0c, 10}, {0x53, 12}, {0x00, 0}
},
{
{0x13, 6}, {0x0b, 10}, {0x54, 12}, {0x00, 0}
},
{
{0x12, 6}, {0x0a, 10}, {0x00, 0}, {0x00, 0}
},
{
{0x11, 6}, {0x09, 10}, {0x00, 0}, {0x00, 0}
},
{
{0x10, 6}, {0x08, 10}, {0x00, 0}, {0x00, 0}
},
{
{0x16, 7}, {0x55, 12}, {0x00, 0}, {0x00, 0}
},
{
{0x15, 7}, {0x00, 0}, {0x00, 0}, {0x00, 0}
},
{
{0x14, 7}, {0x00, 0}, {0x00, 0}, {0x00, 0}
},
{
{0x1c, 8}, {0x00, 0}, {0x00, 0}, {0x00, 0}
},
{
{0x1b, 8}, {0x00, 0}, {0x00, 0}, {0x00, 0}
},
{
{0x21, 9}, {0x00, 0}, {0x00, 0}, {0x00, 0}
},
{
{0x20, 9}, {0x00, 0}, {0x00, 0}, {0x00, 0}
},
{
{0x1f, 9}, {0x00, 0}, {0x00, 0}, {0x00, 0}
},
{
{0x1e, 9}, {0x00, 0}, {0x00, 0}, {0x00, 0}
},
{
{0x1d, 9}, {0x00, 0}, {0x00, 0}, {0x00, 0}
},
{
{0x1c, 9}, {0x00, 0}, {0x00, 0}, {0x00, 0}
},
{
{0x1b, 9}, {0x00, 0}, {0x00, 0}, {0x00, 0}
},
{
{0x1a, 9}, {0x00, 0}, {0x00, 0}, {0x00, 0}
},
{
{0x22, 11}, {0x00, 0}, {0x00, 0}, {0x00, 0}
},
{
{0x23, 11}, {0x00, 0}, {0x00, 0}, {0x00, 0}
},
{
{0x56, 12}, {0x00, 0}, {0x00, 0}, {0x00, 0}
},
{
{0x57, 12}, {0x00, 0}, {0x00, 0}, {0x00, 0}
}
};
/* first coeffs of last = 1. indexing by [run][level-1] */
static VLC coeff_tab2[2][3] = {
/*
run = 0
*/
{
{0x07, 4}, {0x19, 9}, {0x05, 11}
},
/*
run = 1
*/
{
{0x0f, 6}, {0x04, 11}, {0x00, 0}
}
};
/* rest of coeffs for last = 1. indexing by [run-2] */
static VLC coeff_tab3[40][1] = {
{{0x0e, 6}}, {{0x0d, 6}}, {{0x0c, 6}},
{{0x13, 7}}, {{0x12, 7}}, {{0x11, 7}}, {{0x10, 7}},
{{0x1a, 8}}, {{0x19, 8}}, {{0x18, 8}}, {{0x17, 8}},
{{0x16, 8}}, {{0x15, 8}}, {{0x14, 8}}, {{0x13, 8}},
{{0x18, 9}}, {{0x17, 9}}, {{0x16, 9}}, {{0x15, 9}},
{{0x14, 9}}, {{0x13, 9}}, {{0x12, 9}}, {{0x11, 9}},
{{0x07, 10}}, {{0x06, 10}}, {{0x05, 10}}, {{0x04, 10}},
{{0x24, 11}}, {{0x25, 11}}, {{0x26, 11}}, {{0x27, 11}},
{{0x58, 12}}, {{0x59, 12}}, {{0x5a, 12}}, {{0x5b, 12}},
{{0x5c, 12}}, {{0x5d, 12}}, {{0x5e, 12}}, {{0x5f, 12}},
{{0x00, 0}}
};
/* New tables for Intra luminance coefficients. Same codewords,
different meaning */
/* Coeffs for last = 0, run = 0. Indexed by [level-1] */
static VLC coeff_tab4[27] = {
/*
run = 0
*/
{0x02, 2}, {0x06, 3}, {0x0f, 4}, {0x0d, 5},
{0x0c, 5}, {0x15, 6}, {0x13, 6}, {0x12, 6},
{0x17, 7}, {0x1f, 8}, {0x1e, 8}, {0x1d, 8},
{0x25, 9}, {0x24, 9}, {0x23, 9}, {0x21, 9},
{0x21, 10}, {0x20, 10}, {0x0f, 10}, {0x0e, 10},
{0x07, 11}, {0x06, 11}, {0x20, 11}, {0x21, 11},
{0x50, 12}, {0x51, 12}, {0x52, 12}
};
/* Coeffs for last = 0, run = 1. Indexed by [level-1] */
static VLC coeff_tab5[10] = {
{0x0e, 4}, {0x14, 6}, {0x16, 7}, {0x1c, 8},
{0x20, 9}, {0x1f, 9}, {0x0d, 10}, {0x22, 11},
{0x53, 12}, {0x55, 12}
};
/* Coeffs for last = 0, run = 2 -> 9. Indexed by [run-2][level-1] */
static VLC coeff_tab6[8][5] = {
/*
run = 2
*/
{
{0x0b, 5}, {0x15, 7}, {0x1e, 9}, {0x0c, 10},
{0x56, 12}
},
/*
run = 3
*/
{
{0x11, 6}, {0x1b, 8}, {0x1d, 9}, {0x0b, 10},
{0x00, 0}
},
/*
run = 4
*/
{
{0x10, 6}, {0x22, 9}, {0x0a, 10}, {0x00, 0},
{0x00, 0}
},
/*
run = 5
*/
{
{0x0d, 6}, {0x1c, 9}, {0x08, 10}, {0x00, 0},
{0x00, 0}
},
/*
run = 6
*/
{
{0x12, 7}, {0x1b, 9}, {0x54, 12}, {0x00, 0},
{0x00, 0}
},
/*
run = 7
*/
{
{0x14, 7}, {0x1a, 9}, {0x57, 12}, {0x00, 0},
{0x00, 0}
},
/*
run = 8
*/
{
{0x19, 8}, {0x09, 10}, {0x00, 0}, {0x00, 0},
{0x00, 0}
},
/*
run = 9
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