lfg.c File Reference

#include <inttypes.h>
#include <limits.h>
#include <math.h>
#include "lfg.h"
#include "crc.h"
#include "md5.h"
#include "error.h"
#include "intreadwrite.h"
#include "attributes.h"

Go to the source code of this file.

Functions
av_cold void	av_lfg_init (AVLFG *c, unsigned int seed)
void	av_bmg_get (AVLFG *lfg, double out[2])
	Get the next two numbers generated by a Box-Muller Gaussian generator using the random numbers issued by lfg. More...
int	av_lfg_init_from_data (AVLFG *c, const uint8_t *data, unsigned int length)
	Seed the state of the ALFG using binary data. More...

Function Documentation

av_lfg_init()

av_cold void av_lfg_init	(	AVLFG *	c,
		unsigned int	seed
	)

Definition at line 32 of file lfg.c.

Referenced by a64multi_encode_init(), ac3_decode_init(), amrwb_decode_init(), atrac9_decode_init(), cinepak_encode_init(), cng_decode_init(), config_input(), config_output(), config_props(), cook_decode_init(), dct_error(), decode_init(), deshake_opencl_init(), encode_init(), ff_perlin_init(), fill_random(), idct248_error(), init(), init_noise(), main(), mkv_init(), mpc7_decode_init(), mpc8_decode_init(), roq_encode_init(), and rtmp_handshake().

av_bmg_get()

void av_bmg_get	(	AVLFG *	lfg,
		double	out[2]
	)

Get the next two numbers generated by a Box-Muller Gaussian generator using the random numbers issued by lfg.

Parameters

lfg	pointer to the contex structure
out	array where the two generated numbers are placed

Definition at line 49 of file lfg.c.

Referenced by fill_with_noise(), and main().

av_lfg_init_from_data()

int av_lfg_init_from_data	(	AVLFG *	c,
		const uint8_t *	data,
		unsigned int	length
	)

Seed the state of the ALFG using binary data.

Returns

0 on success, negative value (AVERROR) on failure.

Definition at line 64 of file lfg.c.

Referenced by ac3_decode_frame().