#include <config.h>#include "lame.h"#include "machine.h"#include "encoder.h"#include "util.h"#include "fft.h"Include dependency graph for fft.c:
Go to the source code of this file.
Defines | |
| #define | TRI_SIZE (5-1) |
| #define | ch01(index) (buffer[chn][index]) |
| #define | ml00(f) (window[i ] * f(i)) |
| #define | ml10(f) (window[i + 0x200] * f(i + 0x200)) |
| #define | ml20(f) (window[i + 0x100] * f(i + 0x100)) |
| #define | ml30(f) (window[i + 0x300] * f(i + 0x300)) |
| #define | ml01(f) (window[i + 0x001] * f(i + 0x001)) |
| #define | ml11(f) (window[i + 0x201] * f(i + 0x201)) |
| #define | ml21(f) (window[i + 0x101] * f(i + 0x101)) |
| #define | ml31(f) (window[i + 0x301] * f(i + 0x301)) |
| #define | ms00(f) (window_s[i ] * f(i + k)) |
| #define | ms10(f) (window_s[0x7f - i] * f(i + k + 0x80)) |
| #define | ms20(f) (window_s[i + 0x40] * f(i + k + 0x40)) |
| #define | ms30(f) (window_s[0x3f - i] * f(i + k + 0xc0)) |
| #define | ms01(f) (window_s[i + 0x01] * f(i + k + 0x01)) |
| #define | ms11(f) (window_s[0x7e - i] * f(i + k + 0x81)) |
| #define | ms21(f) (window_s[i + 0x41] * f(i + k + 0x41)) |
| #define | ms31(f) (window_s[0x3e - i] * f(i + k + 0xc1)) |
Functions | |
| static void | fht (FLOAT *fz, int n) |
| void | fft_short (lame_internal_flags const *const gfc, FLOAT x_real[3][BLKSIZE_s], int chn, const sample_t *buffer[2]) |
| void | fft_long (lame_internal_flags const *const gfc, FLOAT x[BLKSIZE], int chn, const sample_t *buffer[2]) |
| void | init_fft (lame_internal_flags *const gfc) |
Variables | |
| static FLOAT | window [BLKSIZE] |
| static FLOAT | window_s [BLKSIZE_s/2] |
| static const FLOAT | costab [TRI_SIZE *2] |
| static const unsigned char | rv_tbl [] |
| #define ch01 | ( | index | ) | (buffer[chn][index]) |
| void fft_long | ( | lame_internal_flags const *const | gfc, | |
| FLOAT | x[BLKSIZE], | |||
| int | chn, | |||
| const sample_t * | buffer[2] | |||
| ) |
| void fft_short | ( | lame_internal_flags const *const | gfc, | |
| FLOAT | x_real[3][BLKSIZE_s], | |||
| int | chn, | |||
| const sample_t * | buffer[2] | |||
| ) |
| static void fht | ( | FLOAT * | fz, | |
| int | n | |||
| ) | [static] |
| void init_fft | ( | lame_internal_flags *const | gfc | ) |
Definition at line 292 of file fft.c.
References lame_internal_flags::AMD_3DNow, BLKSIZE, BLKSIZE_s, lame_internal_flags::CPU_features, lame_internal_flags::fft_fht, gfc, i, PI, window, and window_s.
Initial value:
{
9.238795325112867e-01, 3.826834323650898e-01,
9.951847266721969e-01, 9.801714032956060e-02,
9.996988186962042e-01, 2.454122852291229e-02,
9.999811752826011e-01, 6.135884649154475e-03
}
Definition at line 56 of file fft.c.
Referenced by dct64_1(), fht(), and make_decode_tables().
const unsigned char rv_tbl[] [static] |
Initial value:
{
0x00, 0x80, 0x40, 0xc0, 0x20, 0xa0, 0x60, 0xe0,
0x10, 0x90, 0x50, 0xd0, 0x30, 0xb0, 0x70, 0xf0,
0x08, 0x88, 0x48, 0xc8, 0x28, 0xa8, 0x68, 0xe8,
0x18, 0x98, 0x58, 0xd8, 0x38, 0xb8, 0x78, 0xf8,
0x04, 0x84, 0x44, 0xc4, 0x24, 0xa4, 0x64, 0xe4,
0x14, 0x94, 0x54, 0xd4, 0x34, 0xb4, 0x74, 0xf4,
0x0c, 0x8c, 0x4c, 0xcc, 0x2c, 0xac, 0x6c, 0xec,
0x1c, 0x9c, 0x5c, 0xdc, 0x3c, 0xbc, 0x7c, 0xfc,
0x02, 0x82, 0x42, 0xc2, 0x22, 0xa2, 0x62, 0xe2,
0x12, 0x92, 0x52, 0xd2, 0x32, 0xb2, 0x72, 0xf2,
0x0a, 0x8a, 0x4a, 0xca, 0x2a, 0xaa, 0x6a, 0xea,
0x1a, 0x9a, 0x5a, 0xda, 0x3a, 0xba, 0x7a, 0xfa,
0x06, 0x86, 0x46, 0xc6, 0x26, 0xa6, 0x66, 0xe6,
0x16, 0x96, 0x56, 0xd6, 0x36, 0xb6, 0x76, 0xf6,
0x0e, 0x8e, 0x4e, 0xce, 0x2e, 0xae, 0x6e, 0xee,
0x1e, 0x9e, 0x5e, 0xde, 0x3e, 0xbe, 0x7e, 0xfe
}
Definition at line 150 of file fft.c.
Referenced by fft_long(), and fft_short().
Definition at line 54 of file fft.c.
Referenced by gtkcontrol(), inc_subblock_gain(), init_fft(), scale_bitcount_lsf(), set_scalefacs(), and text_window().
1.5.2