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_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_props(), cook_decode_init(), dct_error(), decode_init(), encode_init(), ff_dither_alloc(), fill_random(), generate_dither_noise(), idct248_error(), init(), init_noise(), main(), mkv_write_attachments(), mkv_write_header(), mpc7_decode_init(), mpc8_decode_init(), roq_encode_init(), and rtmp_handshake().

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

out	array where the two generated numbers are placed

Definition at line 49 of file lfg.c.

Referenced by fill_with_noise(), and main().

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

Seed the state of the ALFG using binary data.

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

Definition at line 64 of file lfg.c.

Referenced by ac3_decode_frame().