hvirtual/quicktime/ffmpeg/libavcodec/fft-test.c File Reference

#include "dsputil.h"
#include <math.h>
#include <unistd.h>
#include <sys/time.h>

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Defines
#define	MUL16(a, b)   ((a) * (b))
#define	CMAC(pre, pim, are, aim, bre, bim)
Functions
void	fft_ref_init (int nbits, int inverse)
void	fft_ref (FFTComplex *tabr, FFTComplex *tab, int nbits)
void	imdct_ref (float *out, float *in, int n)
void	mdct_ref (float *output, float *input, int n)
float	frandom (void)
int64_t	gettime (void)
void	check_diff (float *tab1, float *tab2, int n)
void	help (void)
int	main (int argc, char **argv)
Variables
int	mm_flags
FFTComplex *	exptab

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Detailed Description

FFT and MDCT tests.

Definition in file fft-test.c.

---

Define Documentation

#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 17 of file fft-test.c.

Referenced by fft_ref().

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

Definition at line 15 of file fft-test.c.

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Function Documentation

void check_diff	(	float *	tab1,
		float *	tab2,
		int	n
	)

Definition at line 119 of file fft-test.c.

References av_log(), AV_LOG_ERROR, e, and NULL.

Referenced by main().

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

Definition at line 44 of file fft-test.c.

References c, CMAC, FFTComplex::im, FFTComplex::re, and s.

Referenced by main().

void fft_ref_init	(	int	nbits,
		int	inverse
	)

Definition at line 25 of file fft-test.c.

References av_malloc(), c1, FFTComplex::im, M_PI, FFTComplex::re, and s1.

Referenced by main().

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float frandom

(

void

)

Definition at line 107 of file fft-test.c.

Referenced by main().

int64_t gettime

(

void

)

Definition at line 112 of file fft-test.c.

References NULL.

void help

(

void

)

Definition at line 132 of file fft-test.c.

References av_log(), AV_LOG_INFO, and NULL.

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void imdct_ref	(	float *	out,
		float *	in,
		int	n
	)

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

References a, and M_PI.

Referenced by main().

int main	(	int	argc,
		char **	argv
	)

Definition at line 146 of file fft-test.c.

References av_log(), AV_LOG_INFO, av_malloc(), c, check_diff(), ff_fft_calc(), ff_fft_end(), ff_fft_init(), ff_fft_permute(), ff_imdct_calc(), ff_mdct_calc(), ff_mdct_end(), ff_mdct_init(), fft_ref(), fft_ref_init(), frandom(), gettime(), help(), FFTComplex::im, imdct_ref(), mdct_ref(), memcpy, mm_flags, NULL, FFTComplex::re, s, and s1.

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void mdct_ref	(	float *	output,
		float *	input,
		int	n
	)

Definition at line 90 of file fft-test.c.

References a, M_PI, and s.

Referenced by main().

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Variable Documentation

FFTComplex* exptab

Definition at line 23 of file fft-test.c.

Referenced by ff_fft_calc_altivec(), and ff_fft_calc_c().

int mm_flags

Definition at line 11 of file fft-test.c.