#include "libavutil/motion_vector.h"
#include "hpeldsp.h"
#include "me_cmp.h"
#include "qpeldsp.h"
#include "snow_dwt.h"
#include "rangecoder.h"
#include "mathops.h"
#include "mpegvideo.h"
#include "h264qpel.h"

Data Structures
struct	BlockNode

struct	x_and_coeff

struct	SubBand

struct	Plane

struct	SnowContext

Macros
#define	SNOW_MAX_PLANES 4

#define	FF_ME_ITER 3

#define	MID_STATE 128

#define	MAX_PLANES 4

#define	QSHIFT 5

#define	QROOT (1<<QSHIFT)

#define	LOSSLESS_QLOG -128

#define	FRAC_BITS 4

#define	MAX_REF_FRAMES 8

#define	LOG2_OBMC_MAX 8

#define	OBMC_MAX (1<<(LOG2_OBMC_MAX))

#define	BLOCK_INTRA 1
	Intra block, inter otherwise. More...

#define	BLOCK_OPT 2
	Block needs no checks in this round of iterative motion estiation. More...

#define	LOG2_MB_SIZE 4

#define	MB_SIZE (1<<LOG2_MB_SIZE)

#define	ENCODER_EXTRA_BITS 4

#define	HTAPS_MAX 8

#define	QBIAS_SHIFT 3

#define	ME_CACHE_SIZE 1024

#define	QEXPSHIFT (7-FRAC_BITS+8)

Functions
static av_always_inline void	snow_interleave_line_header (int i, int width, IDWTELEM low, IDWTELEM *high)

static av_always_inline void	snow_interleave_line_footer (int i, IDWTELEM low, IDWTELEM *high)

static av_always_inline void	snow_horizontal_compose_lift_lead_out (int i, IDWTELEM dst, IDWTELEM src, IDWTELEM *ref, int width, int w, int lift_high, int mul, int add, int shift)

static av_always_inline void	snow_horizontal_compose_liftS_lead_out (int i, IDWTELEM dst, IDWTELEM src, IDWTELEM *ref, int width, int w)

int	ff_snow_common_init (AVCodecContext *avctx)

int	ff_snow_common_init_after_header (AVCodecContext *avctx)

void	ff_snow_common_end (SnowContext *s)

void	ff_snow_release_buffer (AVCodecContext *avctx)

void	ff_snow_reset_contexts (SnowContext *s)

int	ff_snow_alloc_blocks (SnowContext *s)

int	ff_snow_frame_start (SnowContext *s)

void	ff_snow_pred_block (SnowContext s, uint8_t dst, uint8_t tmp, ptrdiff_t stride, int sx, int sy, int b_w, int b_h, const BlockNode block, int plane_index, int w, int h)

int	ff_snow_get_buffer (SnowContext s, AVFrame frame)

static void	pred_mv (SnowContext s, int mx, int my, int ref, const BlockNode left, const BlockNode top, const BlockNode tr)

static av_always_inline int	same_block (BlockNode a, BlockNode b)

static av_always_inline void	add_yblock (SnowContext s, int sliced, slice_buffer sb, IDWTELEM dst, uint8_t dst8, const uint8_t *obmc, int src_x, int src_y, int b_w, int b_h, int w, int h, int dst_stride, int src_stride, int obmc_stride, int b_x, int b_y, int add, int offset_dst, int plane_index)

static av_always_inline void	predict_slice (SnowContext s, IDWTELEM buf, int plane_index, int add, int mb_y)

static av_always_inline void	predict_plane (SnowContext s, IDWTELEM buf, int plane_index, int add)

static void	set_blocks (SnowContext *s, int level, int x, int y, int l, int cb, int cr, int mx, int my, int ref, int type)

static void	init_ref (MotionEstContext c, const uint8_t const src[3], uint8_t const ref[3], uint8_t const ref2[3], int x, int y, int ref_index)

static void	put_symbol (RangeCoder c, uint8_t state, int v, int is_signed)

static int	get_symbol (RangeCoder c, uint8_t state, int is_signed)

static void	put_symbol2 (RangeCoder c, uint8_t state, int v, int log2)

static int	get_symbol2 (RangeCoder c, uint8_t state, int log2)

static void	unpack_coeffs (SnowContext s, SubBand b, SubBand *parent, int orientation)

Variables
static const BlockNode	null_block

const uint8_t *const	ff_obmc_tab [4]

const uint8_t	ff_qexp [QROOT]

int	ff_scale_mv_ref [MAX_REF_FRAMES][MAX_REF_FRAMES]

const int8_t	ff_quant3bA [256]

Macro Definition Documentation

◆ SNOW_MAX_PLANES

#define SNOW_MAX_PLANES 4

Definition at line 38 of file snow.h.

◆ FF_ME_ITER

#define FF_ME_ITER 3

Definition at line 40 of file snow.h.

◆ MID_STATE

#define MID_STATE 128

Definition at line 42 of file snow.h.

◆ MAX_PLANES

#define MAX_PLANES 4

Definition at line 44 of file snow.h.

◆ QSHIFT

#define QSHIFT 5

Definition at line 45 of file snow.h.

◆ QROOT

#define QROOT (1<<QSHIFT)

Definition at line 46 of file snow.h.

◆ LOSSLESS_QLOG

#define LOSSLESS_QLOG -128

Definition at line 47 of file snow.h.

◆ FRAC_BITS

#define FRAC_BITS 4

Definition at line 48 of file snow.h.

◆ MAX_REF_FRAMES

#define MAX_REF_FRAMES 8

Definition at line 49 of file snow.h.

◆ LOG2_OBMC_MAX

#define LOG2_OBMC_MAX 8

Definition at line 51 of file snow.h.

◆ OBMC_MAX

#define OBMC_MAX (1<<(LOG2_OBMC_MAX))

Definition at line 52 of file snow.h.

◆ BLOCK_INTRA

#define BLOCK_INTRA 1

Intra block, inter otherwise.

Definition at line 60 of file snow.h.

◆ BLOCK_OPT

#define BLOCK_OPT 2

Block needs no checks in this round of iterative motion estiation.

Definition at line 61 of file snow.h.

◆ LOG2_MB_SIZE

#define LOG2_MB_SIZE 4

Definition at line 75 of file snow.h.

◆ MB_SIZE

#define MB_SIZE (1<<LOG2_MB_SIZE)

Definition at line 76 of file snow.h.

◆ ENCODER_EXTRA_BITS

#define ENCODER_EXTRA_BITS 4

Definition at line 77 of file snow.h.

◆ HTAPS_MAX

#define HTAPS_MAX 8

Definition at line 78 of file snow.h.

◆ QBIAS_SHIFT

#define QBIAS_SHIFT 3

Definition at line 165 of file snow.h.

◆ ME_CACHE_SIZE

#define ME_CACHE_SIZE 1024

Definition at line 173 of file snow.h.

◆ QEXPSHIFT

#define QEXPSHIFT (7-FRAC_BITS+8)

Definition at line 509 of file snow.h.

Function Documentation

◆ snow_interleave_line_header()

static av_always_inline void snow_interleave_line_header	(	int *	i,
		int	width,
		IDWTELEM *	low,
		IDWTELEM *	high
	)

static

Definition at line 204 of file snow.h.

◆ snow_interleave_line_footer()

static av_always_inline void snow_interleave_line_footer	(	int *	i,
		IDWTELEM *	low,
		IDWTELEM *	high
	)

static

Definition at line 213 of file snow.h.

◆ snow_horizontal_compose_lift_lead_out()

static av_always_inline void snow_horizontal_compose_lift_lead_out	(	int	i,
		IDWTELEM *	dst,
		IDWTELEM *	src,
		IDWTELEM *	ref,
		int	width,
		int	w,
		int	lift_high,
		int	mul,
		int	add,
		int	shift
	)

static

Definition at line 220 of file snow.h.

◆ snow_horizontal_compose_liftS_lead_out()

static av_always_inline void snow_horizontal_compose_liftS_lead_out	(	int	i,
		IDWTELEM *	dst,
		IDWTELEM *	src,
		IDWTELEM *	ref,
		int	width,
		int	w
	)

static

Definition at line 230 of file snow.h.

◆ ff_snow_common_init()

int ff_snow_common_init ( AVCodecContext * avctx )

Definition at line 426 of file snow.c.

Referenced by encode_init().

◆ ff_snow_common_init_after_header()

int ff_snow_common_init_after_header ( AVCodecContext * avctx )

Definition at line 507 of file snow.c.

Referenced by decode_frame(), and encode_frame().

◆ ff_snow_common_end()

void ff_snow_common_end ( SnowContext * s )

Definition at line 625 of file snow.c.

Referenced by decode_end(), and encode_end().

◆ ff_snow_release_buffer()

void ff_snow_release_buffer ( AVCodecContext * avctx )

Definition at line 583 of file snow.c.

Referenced by decode_frame(), encode_frame(), and ff_snow_frame_start().

◆ ff_snow_reset_contexts()

void ff_snow_reset_contexts ( SnowContext * s )

Definition at line 94 of file snow.c.

Referenced by decode_header(), and encode_header().

◆ ff_snow_alloc_blocks()

int ff_snow_alloc_blocks ( SnowContext * s )

Definition at line 108 of file snow.c.

Referenced by decode_frame(), and encode_init().

◆ ff_snow_frame_start()

int ff_snow_frame_start ( SnowContext * s )

Definition at line 592 of file snow.c.

Referenced by decode_frame(), and encode_frame().

◆ ff_snow_pred_block()

void ff_snow_pred_block	(	SnowContext *	s,
		uint8_t *	dst,
		uint8_t *	tmp,
		ptrdiff_t	stride,
		int	sx,
		int	sy,
		int	b_w,
		int	b_h,
		const BlockNode *	block,
		int	plane_index,
		int	w,
		int	h
	)

Definition at line 316 of file snow.c.

Referenced by add_yblock(), and get_block_rd().

◆ ff_snow_get_buffer()

int ff_snow_get_buffer	(	SnowContext *	s,
		AVFrame *	frame
	)

Definition at line 64 of file snow.c.

Referenced by encode_init(), and ff_snow_frame_start().

◆ pred_mv()

static void pred_mv	(	SnowContext *	s,
		int *	mx,
		int *	my,
		int	ref,
		const BlockNode *	left,
		const BlockNode *	top,
		const BlockNode *	tr
	)

inlinestatic

Definition at line 256 of file snow.h.

◆ same_block()

static av_always_inline int same_block	(	BlockNode *	a,
		BlockNode *	b
	)

static

Definition at line 272 of file snow.h.

Referenced by add_yblock(), encode_q_branch2(), get_4block_rd(), and iterative_me().

◆ add_yblock()

static av_always_inline void add_yblock	(	SnowContext *	s,
		int	sliced,
		slice_buffer *	sb,
		IDWTELEM *	dst,
		uint8_t *	dst8,
		const uint8_t *	obmc,
		int	src_x,
		int	src_y,
		int	b_w,
		int	b_h,
		int	w,
		int	h,
		int	dst_stride,
		int	src_stride,
		int	obmc_stride,
		int	b_x,
		int	b_y,
		int	add,
		int	offset_dst,
		int	plane_index
	)

static

Definition at line 282 of file snow.h.

Referenced by get_4block_rd(), get_dc(), predict_slice(), and predict_slice_buffered().

◆ predict_slice()

static av_always_inline void predict_slice	(	SnowContext *	s,
		IDWTELEM *	buf,
		int	plane_index,
		int	add,
		int	mb_y
	)

static

Definition at line 406 of file snow.h.

Referenced by predict_plane().

◆ predict_plane()

static av_always_inline void predict_plane	(	SnowContext *	s,
		IDWTELEM *	buf,
		int	plane_index,
		int	add
	)

static

Definition at line 457 of file snow.h.

Referenced by decode_frame(), and encode_frame().

◆ set_blocks()

static void set_blocks	(	SnowContext *	s,
		int	level,
		int	x,
		int	y,
		int	l,
		int	cb,
		int	cr,
		int	mx,
		int	my,
		int	ref,
		int	type
	)

inlinestatic

Definition at line 464 of file snow.h.

Referenced by decode_q_branch(), encode_q_branch(), and encode_q_branch2().

◆ init_ref()

static void init_ref	(	MotionEstContext *	c,
		const uint8_t *const	src[3],
		uint8_t *const	ref[3],
		uint8_t *const	ref2[3],
		int	x,
		int	y,
		int	ref_index
	)

inlinestatic

Definition at line 489 of file snow.h.

◆ put_symbol()

static void put_symbol	(	RangeCoder *	c,
		uint8_t *	state,
		int	v,
		int	is_signed
	)

inlinestatic

Definition at line 511 of file snow.h.

◆ get_symbol()

static int get_symbol	(	RangeCoder *	c,
		uint8_t *	state,
		int	is_signed
	)

inlinestatic

Definition at line 542 of file snow.h.

◆ put_symbol2()

static void put_symbol2	(	RangeCoder *	c,
		uint8_t *	state,
		int	v,
		int	log2
	)

inlinestatic

Definition at line 565 of file snow.h.

Referenced by encode_subband_c0run().

◆ get_symbol2()

static int get_symbol2	(	RangeCoder *	c,
		uint8_t *	state,
		int	log2
	)

inlinestatic

Definition at line 585 of file snow.h.

Referenced by unpack_coeffs().

◆ unpack_coeffs()

static void unpack_coeffs	(	SnowContext *	s,
		SubBand *	b,
		SubBand *	parent,
		int	orientation
	)

inlinestatic

Definition at line 605 of file snow.h.

Referenced by decode_frame().

Variable Documentation

◆ null_block

const BlockNode null_block

static

Initial value:

= { 
    .color= {128,128,128},
    .mx= 0,
    .my= 0,
    .ref= 0,
    .type= 0,
    .level= 0,
}

Definition at line 66 of file snow.h.

Referenced by decode_q_branch(), encode_q_branch(), encode_q_branch2(), and get_block_bits().

◆ ff_obmc_tab

const uint8_t* const ff_obmc_tab[4]

Definition at line 123 of file snowdata.h.

Referenced by get_4block_rd(), get_dc(), iterative_me(), predict_slice(), and predict_slice_buffered().

◆ ff_qexp

const uint8_t ff_qexp[QROOT]

Definition at line 128 of file snowdata.h.

Referenced by decode_subband_slice_buffered(), dequantize(), dequantize_slice_buffered(), quantize(), and ratecontrol_1pass().

◆ ff_scale_mv_ref

int ff_scale_mv_ref[MAX_REF_FRAMES][MAX_REF_FRAMES]

Definition at line 135 of file snowdata.h.

Referenced by mca(), and pred_mv().

◆ ff_quant3bA

const int8_t ff_quant3bA[256]

Definition at line 104 of file snowdata.h.

Referenced by encode_subband_c0run(), and unpack_coeffs().

Data Structures

Macros

Functions

Variables

Macro Definition Documentation

◆ SNOW_MAX_PLANES

◆ FF_ME_ITER

◆ MID_STATE

◆ MAX_PLANES

◆ QSHIFT

◆ QROOT

◆ LOSSLESS_QLOG

◆ FRAC_BITS

◆ MAX_REF_FRAMES

◆ LOG2_OBMC_MAX

◆ OBMC_MAX

◆ BLOCK_INTRA

◆ BLOCK_OPT

◆ LOG2_MB_SIZE

◆ MB_SIZE

◆ ENCODER_EXTRA_BITS

◆ HTAPS_MAX

◆ QBIAS_SHIFT

◆ ME_CACHE_SIZE

◆ QEXPSHIFT

Function Documentation

◆ snow_interleave_line_header()

◆ snow_interleave_line_footer()

◆ snow_horizontal_compose_lift_lead_out()

◆ snow_horizontal_compose_liftS_lead_out()

◆ ff_snow_common_init()

◆ ff_snow_common_init_after_header()

◆ ff_snow_common_end()

◆ ff_snow_release_buffer()

◆ ff_snow_reset_contexts()

◆ ff_snow_alloc_blocks()

◆ ff_snow_frame_start()

◆ ff_snow_pred_block()

◆ ff_snow_get_buffer()

◆ pred_mv()

◆ same_block()

◆ add_yblock()

◆ predict_slice()

◆ predict_plane()

◆ set_blocks()

◆ init_ref()

◆ put_symbol()

◆ get_symbol()

◆ put_symbol2()

◆ get_symbol2()

◆ unpack_coeffs()

Variable Documentation

◆ null_block

◆ ff_obmc_tab

◆ ff_qexp

◆ ff_scale_mv_ref

◆ ff_quant3bA