#include "libavutil/intmath.h"
#include "mathops.h"
Go to the source code of this file.
Defines | |
#define | SCALE_FLOAT(a, bits) lrint((a) * (double)(1 << (bits))) |
#define | FIX15(a) av_clip(SCALE_FLOAT(a, 15), -32767, 32767) |
#define | sqrthalf ((int16_t)((1<<15)*M_SQRT1_2)) |
#define | BF(x, y, a, b) |
#define | CMULS(dre, dim, are, aim, bre, bim, sh) |
#define | CMUL(dre, dim, are, aim, bre, bim) CMULS(dre, dim, are, aim, bre, bim, 15) |
#define | CMULL(dre, dim, are, aim, bre, bim) CMULS(dre, dim, are, aim, bre, bim, 0) |
#define | ff_imdct_calc_c FFT_NAME(ff_imdct_calc_c) |
#define | ff_imdct_half_c FFT_NAME(ff_imdct_half_c) |
#define | ff_mdct_calc_c FFT_NAME(ff_mdct_calc_c) |
Functions | |
void | ff_mdct_calcw_c (FFTContext *s, FFTDouble *output, const FFTSample *input) |
void | ff_imdct_calc_c (FFTContext *s, FFTSample *output, const FFTSample *input) |
Compute inverse MDCT of size N = 2^nbits. | |
void | ff_imdct_half_c (FFTContext *s, FFTSample *output, const FFTSample *input) |
Compute the middle half of the inverse MDCT of size N = 2^nbits, thus excluding the parts that can be derived by symmetry. | |
void | ff_mdct_calc_c (FFTContext *s, FFTSample *output, const FFTSample *input) |
Compute MDCT of size N = 2^nbits. |
#define BF | ( | x, | |||
y, | |||||
a, | |||||
b | ) |
Value:
Definition at line 49 of file fft-internal.h.
Definition at line 59 of file fft-internal.h.
Referenced by ff_imdct_half_3dn2(), ff_imdct_half_c(), ff_mdct_calc_c(), and ff_mdct_calcw_c().
#define CMULS | ( | dre, | |||
dim, | |||||
are, | |||||
aim, | |||||
bre, | |||||
bim, | |||||
sh | ) |
#define ff_imdct_calc_c FFT_NAME(ff_imdct_calc_c) |
#define ff_imdct_half_c FFT_NAME(ff_imdct_half_c) |
#define ff_mdct_calc_c FFT_NAME(ff_mdct_calc_c) |
#define FIX15 | ( | a | ) | av_clip(SCALE_FLOAT(a, 15), -32767, 32767) |
Definition at line 45 of file fft-internal.h.
Referenced by ff_init_ff_cos_tabs(), and ff_mdct_init().
Definition at line 44 of file fft-internal.h.
#define sqrthalf ((int16_t)((1<<15)*M_SQRT1_2)) |
void ff_imdct_calc_c | ( | FFTContext * | s, | |
FFTSample * | output, | |||
const FFTSample * | input | |||
) |
void ff_imdct_half_c | ( | FFTContext * | s, | |
FFTSample * | output, | |||
const FFTSample * | input | |||
) |
void ff_mdct_calc_c | ( | FFTContext * | s, | |
FFTSample * | out, | |||
const FFTSample * | input | |||
) |
void ff_mdct_calcw_c | ( | FFTContext * | s, | |
FFTDouble * | output, | |||
const FFTSample * | input | |||
) |