FFmpeg
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Go to the source code of this file.
Macros | |
#define | DCTSIZE 8 |
#define | GLOBAL(x) x |
#define | RIGHT_SHIFT(x, n) ((x) >> (n)) |
#define | CONST_BITS 8 |
#define | FIX_0_382683433 ((int32_t) 98) /* FIX(0.382683433) */ |
#define | FIX_0_541196100 ((int32_t) 139) /* FIX(0.541196100) */ |
#define | FIX_0_707106781 ((int32_t) 181) /* FIX(0.707106781) */ |
#define | FIX_1_306562965 ((int32_t) 334) /* FIX(1.306562965) */ |
#define | DESCALE(x, n) RIGHT_SHIFT(x, n) |
#define | MULTIPLY(var, const) ((int16_t) DESCALE((var) * (const), CONST_BITS)) |
Functions | |
static av_always_inline void | row_fdct (int16_t *data) |
ff_fdct_ifast (int16_t *data) | |
ff_fdct_ifast248 (int16_t *data) | |
Independent JPEG Group's fast AAN dct.
Definition in file jfdctfst.c.
#define DCTSIZE 8 |
Definition at line 74 of file jfdctfst.c.
#define GLOBAL | ( | x | ) | x |
Definition at line 75 of file jfdctfst.c.
Definition at line 76 of file jfdctfst.c.
#define CONST_BITS 8 |
Definition at line 105 of file jfdctfst.c.
Definition at line 116 of file jfdctfst.c.
Definition at line 117 of file jfdctfst.c.
Definition at line 118 of file jfdctfst.c.
Definition at line 119 of file jfdctfst.c.
#define DESCALE | ( | x, | |
n | |||
) | RIGHT_SHIFT(x, n) |
Definition at line 135 of file jfdctfst.c.
#define MULTIPLY | ( | var, | |
const | |||
) | ((int16_t) DESCALE((var) * (const), CONST_BITS)) |
Definition at line 143 of file jfdctfst.c.
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static |
Definition at line 145 of file jfdctfst.c.
Referenced by ff_fdct_ifast(), and ff_fdct_ifast248().
ff_fdct_ifast | ( | int16_t * | data | ) |
Definition at line 208 of file jfdctfst.c.
Referenced by dct_quantize_trellis_c(), encode_init(), ff_convert_matrix(), and ff_fdctdsp_init().
ff_fdct_ifast248 | ( | int16_t * | data | ) |
Definition at line 274 of file jfdctfst.c.
Referenced by ff_fdctdsp_init().