FFmpeg
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Walken IDCT Alternative idct implementations for decoding compatibility. More...
#include "xvididct.h"
Go to the source code of this file.
Macros | |
#define | ROW_SHIFT 11 |
#define | COL_SHIFT 6 |
#define | Rnd0 65536 |
#define | Rnd1 3597 |
#define | Rnd2 2260 |
#define | Rnd3 1203 |
#define | Rnd4 0 |
#define | Rnd5 120 |
#define | Rnd6 512 |
#define | Rnd7 512 |
#define | Tan1 0x32ec |
#define | Tan2 0x6a0a |
#define | Tan3 0xab0e |
#define | Sqrt2 0x5a82 |
#define | MULT(c, x, n) ( ((c) * (x)) >> (n) ) |
#define | BUTF(a, b, tmp) |
#define | LOAD_BUTF(m1, m2, a, b, tmp, S) |
Functions | |
static int | Idct_Row (short *In, const int *const Tab, int Rnd) |
static void | Idct_Col_8 (short *const In) |
static void | Idct_Col_4 (short *const In) |
static void | Idct_Col_3 (short *const In) |
void | ff_idct_xvid (int16_t *const In) |
Variables | |
static const int | Tab04 [] = { 22725, 21407, 19266, 16384, 12873, 8867, 4520 } |
static const int | Tab17 [] = { 31521, 29692, 26722, 22725, 17855, 12299, 6270 } |
static const int | Tab26 [] = { 29692, 27969, 25172, 21407, 16819, 11585, 5906 } |
static const int | Tab35 [] = { 26722, 25172, 22654, 19266, 15137, 10426, 5315 } |
Walken IDCT Alternative idct implementations for decoding compatibility.
Definition in file xvid_c_idct.c.
#define ROW_SHIFT 11 |
Definition at line 41 of file xvid_c_idct.c.
Referenced by Idct_Row().
#define COL_SHIFT 6 |
Definition at line 42 of file xvid_c_idct.c.
Referenced by Idct_Col_3(), Idct_Col_4(), and Idct_Col_8().
#define Rnd0 65536 |
Definition at line 45 of file xvid_c_idct.c.
Referenced by ff_idct_xvid().
#define Rnd1 3597 |
Definition at line 46 of file xvid_c_idct.c.
Referenced by ff_idct_xvid().
#define Rnd2 2260 |
Definition at line 47 of file xvid_c_idct.c.
Referenced by ff_idct_xvid().
#define Rnd3 1203 |
Definition at line 48 of file xvid_c_idct.c.
Referenced by ff_idct_xvid().
#define Rnd4 0 |
Definition at line 49 of file xvid_c_idct.c.
Referenced by ff_idct_xvid().
#define Rnd5 120 |
Definition at line 50 of file xvid_c_idct.c.
Referenced by ff_idct_xvid().
#define Rnd6 512 |
Definition at line 51 of file xvid_c_idct.c.
Referenced by ff_idct_xvid().
#define Rnd7 512 |
Definition at line 52 of file xvid_c_idct.c.
Referenced by ff_idct_xvid().
#define Tan1 0x32ec |
Definition at line 144 of file xvid_c_idct.c.
Referenced by Idct_Col_3(), Idct_Col_4(), and Idct_Col_8().
#define Tan2 0x6a0a |
Definition at line 145 of file xvid_c_idct.c.
Referenced by Idct_Col_3(), Idct_Col_4(), and Idct_Col_8().
#define Tan3 0xab0e |
Definition at line 146 of file xvid_c_idct.c.
Referenced by Idct_Col_4(), and Idct_Col_8().
#define Sqrt2 0x5a82 |
Definition at line 147 of file xvid_c_idct.c.
Referenced by Idct_Col_3(), Idct_Col_4(), and Idct_Col_8().
Definition at line 149 of file xvid_c_idct.c.
Referenced by Idct_Col_3(), Idct_Col_4(), and Idct_Col_8().
Definition at line 153 of file xvid_c_idct.c.
Referenced by Idct_Col_3(), Idct_Col_4(), and Idct_Col_8().
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Definition at line 59 of file xvid_c_idct.c.
Referenced by ff_idct_xvid().
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Definition at line 162 of file xvid_c_idct.c.
Referenced by ff_idct_xvid().
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Definition at line 214 of file xvid_c_idct.c.
Referenced by ff_idct_xvid().
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Definition at line 258 of file xvid_c_idct.c.
Referenced by ff_idct_xvid().
void ff_idct_xvid | ( | int16_t *const | In | ) |
Definition at line 305 of file xvid_c_idct.c.
Referenced by ff_xvid_idct_init(), idct_xvid_add(), and idct_xvid_put().
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Definition at line 54 of file xvid_c_idct.c.
Referenced by ff_idct_xvid().
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Definition at line 55 of file xvid_c_idct.c.
Referenced by ff_idct_xvid().
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Definition at line 56 of file xvid_c_idct.c.
Referenced by ff_idct_xvid().
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Definition at line 57 of file xvid_c_idct.c.
Referenced by ff_idct_xvid().