xface.c File Reference

X-Face common data and utilities definition. More...

#include "libavutil/avassert.h"
#include "xface.h"

Macros
#define	GEN(table)   dst[h] ^= (table[k>>3]>>(7-(k&7)))&1

Functions
void	ff_big_add (BigInt *b, uint8_t a)
	Add a to b storing the result in b.
void	ff_big_div (BigInt *b, uint8_t a, uint8_t *r)
	Divide b by a storing the result in b and the remainder in the word pointed to by r.
void	ff_big_mul (BigInt *b, uint8_t a)
	Multiply a by b storing the result in b.
void	ff_xface_generate_face (uint8_t *dst, uint8_t *const src)

Variables
const ProbRange	ff_xface_probranges_per_level [4][3]
const ProbRange	ff_xface_probranges_2x2 [16]

Detailed Description

X-Face common data and utilities definition.

Variable Documentation

ff_xface_probranges_2x2

const ProbRange ff_xface_probranges_2x2[16]

Initial value:

= {
    { 0,   0},  {38,   0}, {38,  38},  {13, 152},
    {38,  76},  {13, 165}, {13, 178},  { 6, 230},
    {38, 114},  {13, 191}, {13, 204},  { 6, 236},
    {13, 217},  { 6, 242}, { 5, 248},  { 3, 253},
}

ff_xface_probranges_per_level

const ProbRange ff_xface_probranges_per_level[4][3]

Initial value:

= {
    
    { {  1, 255}, {251, 0}, {  4, 251} }, 
    { {  1, 255}, {200, 0}, { 55, 200} },
    { { 33, 223}, {159, 0}, { 64, 159} },
    { {131,   0}, {  0, 0}, {125, 131} }, 
}