mdct15.c File Reference

Celt non-power of 2 iMDCT. More...

#include <float.h>
#include <math.h>
#include <stddef.h>
#include "config.h"
#include "libavutil/attributes.h"
#include "libavutil/common.h"
#include "avfft.h"
#include "mdct15.h"

Go to the source code of this file.

Macros
#define	CMUL3(cre, cim, are, aim, bre, bim)
#define	CMUL(c, a, b)   CMUL3((c).re, (c).im, (a).re, (a).im, (b).re, (b).im)

Functions
av_cold void	ff_mdct15_uninit (MDCT15Context **ps)
	Frees a context. More...
static void	mdct15 (MDCT15Context *s, float *dst, const float *src, ptrdiff_t stride)
static void	imdct15_half (MDCT15Context *s, float *dst, const float *src, ptrdiff_t stride, float scale)
static int	init_pfa_reindex_tabs (MDCT15Context *s)
av_cold int	ff_mdct15_init (MDCT15Context **ps, int inverse, int N, double scale)
	Init an (i)MDCT of the length 2 * 15 * (2^N) More...
static void	fft5 (const FFTComplex exptab[2], FFTComplex *out, const FFTComplex *in)
static void	fft15 (const FFTComplex exptab[22], FFTComplex *out, const FFTComplex *in, size_t stride)

Detailed Description

Celt non-power of 2 iMDCT.

Definition in file mdct15.c.

Macro Definition Documentation

#define CMUL3	(		cre,
			cim,
			are,
			aim,
			bre,
			bim
	)

Value:

do {                                                 \
    cre = are * bre - aim * bim;                     \
    cim = are * bim + aim * bre;                     \
} while (0)

Definition at line 40 of file mdct15.c.

Referenced by imdct15_half(), and mdct15().

#define CMUL	(		c,
			a,
			b
	)		CMUL3((c).re, (c).im, (a).re, (a).im, (b).re, (b).im)

Definition at line 46 of file mdct15.c.

Referenced by fft15(), and imdct15_half().

Function Documentation

av_cold void ff_mdct15_uninit

(

MDCT15Context **

ps

)

Frees a context.

Definition at line 48 of file mdct15.c.

Referenced by aac_decode_close(), ff_celt_free(), ff_mdct15_init(), and opus_encode_end().

static void mdct15 ( MDCT15Context *  s, float *  dst, const float *  src, ptrdiff_t  stride  )

static

Definition at line 256 of file mdct15.c.

Referenced by ff_mdct15_init().

static void imdct15_half ( MDCT15Context *  s, float *  dst, const float *  src, ptrdiff_t  stride, float  scale  )

static

Definition at line 300 of file mdct15.c.

Referenced by ff_mdct15_init().

static int init_pfa_reindex_tabs ( MDCT15Context *  s )

inlinestatic

Definition at line 70 of file mdct15.c.

Referenced by ff_mdct15_init().

av_cold int ff_mdct15_init	(	MDCT15Context **	ps,
		int	inverse,
		int	N,
		double	scale
	)

Init an (i)MDCT of the length 2 * 15 * (2^N)

Definition at line 101 of file mdct15.c.

Referenced by aac_decode_init(), ff_celt_init(), and opus_encode_init().

static void fft5 ( const FFTComplex  exptab[2], FFTComplex *  out, const FFTComplex *  in  )

inlinestatic

Definition at line 181 of file mdct15.c.

Referenced by fft15().

static void fft15 ( const FFTComplex  exptab[22], FFTComplex *  out, const FFTComplex *  in, size_t  stride  )

static

Definition at line 227 of file mdct15.c.

Referenced by imdct15_half(), and mdct15().