h274.c File Reference

#include "libavutil/avassert.h"
#include "libavutil/imgutils.h"
#include "h274.h"

Go to the source code of this file.

Functions
static void	prng_shift (uint32_t *state)
static void	init_slice_c (int8_t out[64][64], uint8_t h, uint8_t v, int16_t tmp[64][64])
static void	init_slice (H274FilmGrainDatabase *database, uint8_t h, uint8_t v)
static uint16_t	avg_8x8_c (const uint8_t *in, int in_stride)
static void	synth_grain_8x8_c (int8_t *out, const int out_stride, const int16_t scale, const uint8_t shift, const int8_t *db)
static void	deblock_8x8_c (int8_t *out, const int out_stride)
static av_always_inline void	generate (int8_t *out, int out_stride, const uint8_t *in, int in_stride, H274FilmGrainDatabase *database, const AVFilmGrainH274Params *h274, int c, int invert, int deblock, int y_offset, int x_offset)
static void	add_8x8_clip_c (uint8_t *out, const uint8_t *a, const int8_t *b, int n)
int	ff_h274_apply_film_grain (AVFrame *out_frame, const AVFrame *in_frame, H274FilmGrainDatabase *database, const AVFilmGrainParams *params)

Variables
static const int8_t	Gaussian_LUT [2048+4]
static const uint32_t	Seed_LUT [256]
static const int8_t	R64T [64][64]

Detailed Description

H.274 film grain synthesis.

Author

Niklas Haas ffmpe.nosp@m.g@ha.nosp@m.asn.x.nosp@m.yz

Definition in file h274.c.

Function Documentation

prng_shift()

static void prng_shift ( uint32_t *  state )

static

Definition at line 37 of file h274.c.

Referenced by ff_h274_apply_film_grain(), and init_slice_c().

init_slice_c()

static void init_slice_c ( int8_t  out[64][64], uint8_t  h, uint8_t  v, int16_t  tmp[64][64]  )

static

Definition at line 45 of file h274.c.

Referenced by init_slice().

init_slice()

static void init_slice ( H274FilmGrainDatabase *  database, uint8_t  h, uint8_t  v  )

static

Definition at line 104 of file h274.c.

Referenced by generate().

avg_8x8_c()

static uint16_t avg_8x8_c ( const uint8_t *  in, int  in_stride  )

static

Definition at line 114 of file h274.c.

Referenced by generate().

synth_grain_8x8_c()

static void synth_grain_8x8_c ( int8_t *  out, const int  out_stride, const int16_t  scale, const uint8_t  shift, const int8_t *  db  )

static

Definition at line 129 of file h274.c.

Referenced by generate().

deblock_8x8_c()

static void deblock_8x8_c ( int8_t *  out, const int  out_stride  )

static

Definition at line 143 of file h274.c.

Referenced by generate().

generate()

static av_always_inline void generate ( int8_t *  out, int  out_stride, const uint8_t *  in, int  in_stride, H274FilmGrainDatabase *  database, const AVFilmGrainH274Params *  h274, int  c, int  invert, int  deblock, int  y_offset, int  x_offset  )

static

Definition at line 156 of file h274.c.

Referenced by ff_h274_apply_film_grain().

add_8x8_clip_c()

static void add_8x8_clip_c ( uint8_t *  out, const uint8_t *  a, const int8_t *  b, int  n  )

static

Definition at line 210 of file h274.c.

Referenced by ff_h274_apply_film_grain().

ff_h274_apply_film_grain()

int ff_h274_apply_film_grain	(	AVFrame *	out_frame,
		const AVFrame *	in_frame,
		H274FilmGrainDatabase *	database,
		const AVFilmGrainParams *	params
	)

Definition at line 217 of file h274.c.

Referenced by ff_h264_field_end(), and hevc_frame_end().

Variable Documentation

Gaussian_LUT

static const int8_t Gaussian_LUT

static

Definition at line 33 of file h274.c.

Referenced by init_slice_c().

Seed_LUT

static const uint32_t Seed_LUT

static

Definition at line 34 of file h274.c.

Referenced by ff_h274_apply_film_grain(), and init_slice_c().

R64T

static const int8_t R64T

static

Definition at line 35 of file h274.c.

Referenced by init_slice_c().