h274.c File Reference

H.274 film grain synthesis. More...

#include <stdatomic.h>
#include "libavutil/avassert.h"
#include "libavutil/bswap.h"
#include "libavcodec/bswapdsp.h"
#include "libavutil/crc.h"
#include "libavutil/imgutils.h"
#include "libavutil/md5.h"
#include "libavutil/mem.h"
#include "libavutil/thread.h"
#include "h274.h"

Go to the source code of this file.

Data Structures
struct	H274FilmGrainDatabase
struct	H274HashContext

Macros
#define	MD5_SIZE   16
#define	CAL_CHECKSUM(pixel)

Enumerations
enum	{ HASH_MD5SUM , HASH_CRC , HASH_CHECKSUM , HASH_LAST = HASH_CHECKSUM }

Functions
static av_cold void	init_film_grain_db (void)
static void	prng_shift (uint32_t *state)
static void	init_slice_c (int8_t out[64][64], uint8_t h, uint8_t v)
static void	init_slice (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, 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, const AVFilmGrainParams *params)
static av_always_inline void	bswap16_buf_if_be (H274HashContext *s, const int ps, const uint8_t **src, const int w)
static int	verify_plane_md5 (H274HashContext *s, const uint8_t *_src, const int w, const int h, const int stride, const int ps, const uint8_t *expected)
static int	verify_plane_crc (H274HashContext *s, const uint8_t *_src, const int w, const int h, const int stride, const int ps, uint16_t expected)
static int	verify_plane_checksum (const uint8_t *src, const int w, const int h, const int stride, const int ps, uint32_t expected)
void	ff_h274_hash_freep (H274HashContext **ctx)
int	ff_h274_hash_init (H274HashContext **ctx, const int type)
int	ff_h274_hash_verify (H274HashContext *c, const H274SEIPictureHash *hash, const AVFrame *frame, const int coded_width, const int coded_height)

Variables
static H274FilmGrainDatabase *	film_grain_db
static AVOnce	film_grain_db_once = AV_ONCE_INIT
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.

Macro Definition Documentation

MD5_SIZE

#define MD5_SIZE   16

Referenced by verify_plane_md5().

CAL_CHECKSUM

#define CAL_CHECKSUM

(

pixel

)

Value:

((pixel) ^ xor_mask)

Definition at line 905 of file h274.c.

Referenced by verify_plane_checksum().

Enumeration Type Documentation

anonymous enum

anonymous enum

Enumerator
HASH_MD5SUM
HASH_CRC
HASH_CHECKSUM
HASH_LAST

Definition at line 928 of file h274.c.

Function Documentation

init_film_grain_db()

static av_cold void init_film_grain_db ( void )

static

Definition at line 52 of file h274.c.

Referenced by ff_h274_apply_film_grain().

prng_shift()

static void prng_shift ( uint32_t * state )

static

Definition at line 69 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 )

static

Definition at line 77 of file h274.c.

Referenced by init_slice().

init_slice()

static void init_slice ( uint8_t h, uint8_t v )

static

Definition at line 137 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 158 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 173 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 187 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, const AVFilmGrainH274Params * h274, int c, int invert, int deblock, int y_offset, int x_offset )

static

Definition at line 200 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 253 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,
		const AVFilmGrainParams *	params )

Definition at line 260 of file h274.c.

Referenced by ff_h264_field_end(), frame_end(), and hevc_frame_end().

bswap16_buf_if_be()

static av_always_inline void bswap16_buf_if_be ( H274HashContext * s, const int ps, const uint8_t ** src, const int w )

static

Definition at line 851 of file h274.c.

Referenced by verify_plane_crc(), and verify_plane_md5().

verify_plane_md5()

static int verify_plane_md5 ( H274HashContext * s, const uint8_t * _src, const int w, const int h, const int stride, const int ps, const uint8_t * expected )

static

Definition at line 862 of file h274.c.

Referenced by ff_h274_hash_verify().

verify_plane_crc()

static int verify_plane_crc ( H274HashContext * s, const uint8_t * _src, const int w, const int h, const int stride, const int ps, uint16_t expected )

static

Definition at line 885 of file h274.c.

Referenced by ff_h274_hash_verify().

verify_plane_checksum()

static int verify_plane_checksum ( const uint8_t * src, const int w, const int h, const int stride, const int ps, uint32_t expected )

static

Definition at line 906 of file h274.c.

Referenced by ff_h274_hash_verify().

ff_h274_hash_freep()

void ff_h274_hash_freep

(

H274HashContext **

ctx

)

Definition at line 935 of file h274.c.

Referenced by vvc_decode_free().

ff_h274_hash_init()

int ff_h274_hash_init	(	H274HashContext **	ctx,
		const int	type )

Definition at line 948 of file h274.c.

Referenced by frame_end().

ff_h274_hash_verify()

int ff_h274_hash_verify	(	H274HashContext *	c,
		const H274SEIPictureHash *	hash,
		const AVFrame *	frame,
		const int	coded_width,
		const int	coded_height )

Definition at line 983 of file h274.c.

Referenced by frame_end().

Variable Documentation

film_grain_db

H274FilmGrainDatabase* film_grain_db

static

Definition at line 49 of file h274.c.

Referenced by ff_h274_apply_film_grain(), generate(), init_film_grain_db(), init_slice(), and init_slice_c().

film_grain_db_once

AVOnce film_grain_db_once = AV_ONCE_INIT

static

Definition at line 50 of file h274.c.

Referenced by ff_h274_apply_film_grain().

Gaussian_LUT

static const int8_t Gaussian_LUT

static

Definition at line 65 of file h274.c.

Referenced by init_slice_c().

Seed_LUT

static const uint32_t Seed_LUT

static

Definition at line 66 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 67 of file h274.c.

Referenced by init_slice_c().