fft-test.c File Reference

FFT and MDCT tests. More...

#include "config.h"
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "libavutil/cpu.h"
#include "libavutil/lfg.h"
#include "libavutil/log.h"
#include "libavutil/mathematics.h"
#include "libavutil/time.h"
#include "fft.h"
#include "dct.h"
#include "rdft.h"
#include "compat/getopt.c"

Go to the source code of this file.

Macros
#define	MUL16(a, b)   ((a) * (b))
#define	CMAC(pre, pim, are, aim, bre, bim)
#define	RANGE   1.0
#define	REF_SCALE(x, bits)   (x)
#define	FMT   "%10.6f"

Enumerations
enum	tf_transform { TRANSFORM_FFT, TRANSFORM_MDCT, TRANSFORM_RDFT, TRANSFORM_DCT }

Functions
static int	fft_ref_init (int nbits, int inverse)
static void	fft_ref (FFTComplex *tabr, FFTComplex *tab, int nbits)
static FFTSample	frandom (AVLFG *prng)
static int	check_diff (FFTSample *tab1, FFTSample *tab2, int n, double scale)
static void	help (void)
int	main (int argc, char **argv)

Variables
struct {
float   re
float   im
}	exptab

Detailed Description

FFT and MDCT tests.

Definition in file fft-test.c.

Macro Definition Documentation

#define MUL16	(		a,
			b
	)		((a) * (b))

Definition at line 50 of file fft-test.c.

Referenced by apply_window_int16_c(), celt_cos(), ff_dot_product(), pRNG(), and synth_frame().

#define CMAC	(		pre,
			pim,
			are,
			aim,
			bre,
			bim
	)

Value:

{                                               \
        pre += (MUL16(are, bre) - MUL16(aim, bim)); \
        pim += (MUL16(are, bim) + MUL16(bre, aim)); \
    }

Definition at line 52 of file fft-test.c.

Referenced by fft_ref().

#define RANGE   1.0

Definition at line 59 of file fft-test.c.

Referenced by check_diff(), and frandom().

#define REF_SCALE	(		x,
			bits
	)		(x)

Definition at line 60 of file fft-test.c.

Referenced by fft_ref().

#define FMT   "%10.6f"

Definition at line 61 of file fft-test.c.

Referenced by check_diff().

Enumeration Type Documentation

enum tf_transform

Enumerator:

TRANSFORM_FFT
TRANSFORM_MDCT
TRANSFORM_RDFT
TRANSFORM_DCT

Definition at line 228 of file fft-test.c.

Function Documentation

static int fft_ref_init ( int  nbits, int  inverse  )

static

Definition at line 76 of file fft-test.c.

Referenced by main().

static void fft_ref ( FFTComplex *  tabr, FFTComplex *  tab, int  nbits  )

static

Definition at line 95 of file fft-test.c.

Referenced by main().

static FFTSample frandom ( AVLFG *  prng )

static

Definition at line 189 of file fft-test.c.

Referenced by main().

static int check_diff ( FFTSample *  tab1, FFTSample *  tab2, int  n, double  scale  )

static

Definition at line 194 of file fft-test.c.

Referenced by main().

static void help ( void  )

static

Definition at line 214 of file fft-test.c.

Referenced by main().

int main	(	int	argc,
		char **	argv
	)

Definition at line 239 of file fft-test.c.

Variable Documentation

float re

Definition at line 73 of file fft-test.c.

Referenced by adjust_jnd(), celt_imdct_half(), decode_422_bitstream(), decode_ac_coeffs(), decode_bgr_1(), decode_block(), decode_block_intra(), decode_block_progressive(), decode_block_refinement(), decode_dc_coeffs(), decode_gray_bitstream(), decode_plane_bitstream(), decode_spectrum_and_dequant(), decode_vlc_codeword(), dirac_get_se_golomb(), dv_decode_ac(), ff_imdct_half_c(), ff_mdct_calc_c(), ff_mdct_calcw_c(), ff_msmpeg4_decode_block(), fft(), fft4(), fft8(), get_bits(), get_bits_le(), get_level_prefix(), get_sbits(), get_se_golomb(), get_ue_golomb(), get_ue_golomb_31(), get_ur_golomb(), get_ur_golomb_jpegls(), get_vlc2(), get_xbits(), h261_decode_block(), h263_decode_block(), imc_imdct256(), mdec_decode_block_intra(), mpeg1_decode_block_inter(), mpeg1_decode_block_intra(), mpeg1_fast_decode_block_inter(), mpeg2_decode_block_intra(), mpeg2_decode_block_non_intra(), mpeg2_fast_decode_block_intra(), mpeg2_fast_decode_block_non_intra(), mpeg4_decode_block(), show_bits(), skip_bits(), svq3_get_se_golomb(), svq3_get_ue_golomb(), and webp_get_vlc().

float im

Definition at line 73 of file fft-test.c.

Referenced by adjust_jnd(), celt_imdct_half(), ff_imdct_half_c(), ff_mdct_calc_c(), ff_mdct_calcw_c(), fft(), fft4(), fft8(), huf_build_dec_table(), huf_uncompress(), huf_unpack_enc_table(), and imc_imdct256().

struct { ... } * exptab

Referenced by fft15(), fft_calc(), fft_ref(), fft_ref_init(), and main().