#include "dsputil.h"
#include "hpeldsp.h"
#include "snow_dwt.h"
#include "rangecoder.h"
#include "mathops.h"
#include "mpegvideo.h"
#include "h264qpel.h"

Include dependency graph for snow.h:

This graph shows which files directly or indirectly include this file:

Go to the source code of this file.

Data Structures
struct	BlockNode

struct	x_and_coeff

struct	SubBand

struct	Plane

struct	SnowContext

Macros
#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

#define	BLOCK_OPT 2

#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)

Typedefs
typedef struct BlockNode	BlockNode

typedef struct x_and_coeff	x_and_coeff

typedef struct SubBand	SubBand

typedef struct Plane	Plane

typedef struct SnowContext	SnowContext

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, int stride, int sx, int sy, int b_w, int b_h, BlockNode block, int plane_index, int w, int h)

static void	snow_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	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, uint8_t src[3], uint8_t ref[3], uint8_t 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]

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

#define BLOCK_INTRA 1

Definition at line 52 of file snow.h.

Referenced by check_4block_inter(), check_block(), decode_q_branch(), encode_q_branch(), encode_q_branch2(), ff_snow_pred_block(), get_block_bits(), get_dc(), iterative_me(), and same_block().

#define BLOCK_OPT 2

Definition at line 53 of file snow.h.

Referenced by iterative_me().

#define ENCODER_EXTRA_BITS 4

Definition at line 69 of file snow.h.

Referenced by encode_frame(), and quantize().

#define FRAC_BITS 4

Definition at line 40 of file snow.h.

Referenced by add_yblock(), and predict_slice().

#define HTAPS_MAX 8

Definition at line 70 of file snow.h.

Referenced by decode_header(), ff_snow_common_init_after_header(), ff_snow_pred_block(), and mc_block().

#define LOG2_MB_SIZE 4

Definition at line 67 of file snow.h.

Referenced by encode_q_branch(), and ff_snow_alloc_blocks().

#define LOG2_OBMC_MAX 8

Definition at line 43 of file snow.h.

Referenced by add_yblock(), ff_snow_inner_add_yblock(), get_block_rd(), and get_dc().

#define LOSSLESS_QLOG -128

Definition at line 39 of file snow.h.

Referenced by decode_frame(), decode_subband_slice_buffered(), dequantize(), dequantize_slice_buffered(), encode_frame(), and quantize().

#define MAX_PLANES 4

Definition at line 36 of file snow.h.

#define MAX_REF_FRAMES 8

Definition at line 41 of file snow.h.

Referenced by decode_header(), encode_init(), ff_snow_common_end(), and mca().

#define MB_SIZE (1<<LOG2_MB_SIZE)

Definition at line 68 of file snow.h.

Referenced by add_yblock(), decode_frame(), encode_blocks(), encode_frame(), encode_init(), ff_snow_common_init_after_header(), ff_snow_pred_block(), get_4block_rd(), get_dc(), iterative_me(), predict_slice(), and predict_slice_buffered().

#define ME_CACHE_SIZE 1024

Definition at line 164 of file snow.h.

Referenced by check_4block_inter(), and check_block().

#define MID_STATE 128

Definition at line 34 of file snow.h.

Referenced by decode_header(), encode_header(), and ff_snow_reset_contexts().

#define OBMC_MAX (1<<(LOG2_OBMC_MAX))

Definition at line 44 of file snow.h.

#define QBIAS_SHIFT 3

Definition at line 157 of file snow.h.

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

#define QEXPSHIFT (7-FRAC_BITS+8)

Definition at line 510 of file snow.h.

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

#define QROOT (1<<QSHIFT)

Definition at line 38 of file snow.h.

Referenced by calculate_visual_weight(), decode_subband_slice_buffered(), dequantize(), dequantize_slice_buffered(), init_qexp(), qscale2qlog(), quantize(), and ratecontrol_1pass().

#define QSHIFT 5

Definition at line 37 of file snow.h.

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

Typedef Documentation

typedef struct BlockNode BlockNode

typedef struct Plane Plane

typedef struct SnowContext SnowContext

typedef struct SubBand SubBand

typedef struct x_and_coeff x_and_coeff

Function Documentation

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 285 of file snow.h.

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

int ff_snow_alloc_blocks ( SnowContext * s )

Definition at line 83 of file snow.c.

Referenced by decode_frame(), encode_init(), and snow_horizontal_compose_liftS_lead_out().

void ff_snow_common_end ( SnowContext * s )

Definition at line 650 of file snow.c.

Referenced by decode_end(), decode_init(), encode_end(), encode_init(), and snow_horizontal_compose_liftS_lead_out().

int ff_snow_common_init ( AVCodecContext * avctx )

Referenced by decode_init(), encode_init(), and snow_horizontal_compose_liftS_lead_out().

int ff_snow_common_init_after_header ( AVCodecContext * avctx )

Definition at line 472 of file snow.c.

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

int ff_snow_frame_start ( SnowContext * s )

Definition at line 599 of file snow.c.

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

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

Definition at line 297 of file snow.c.

Referenced by add_yblock(), get_block_rd(), and snow_horizontal_compose_liftS_lead_out().

void ff_snow_release_buffer ( AVCodecContext * avctx )

Definition at line 586 of file snow.c.

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

void ff_snow_reset_contexts ( SnowContext * s )

Definition at line 69 of file snow.c.

Referenced by decode_header(), encode_header(), and snow_horizontal_compose_liftS_lead_out().

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

inlinestatic

Definition at line 543 of file snow.h.

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

inlinestatic

Definition at line 583 of file snow.h.

Referenced by unpack_coeffs().

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

inlinestatic

Definition at line 490 of file snow.h.

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 259 of file snow.h.

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

static

Definition at line 458 of file snow.h.

Referenced by decode_frame(), and encode_frame().

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

static

Definition at line 407 of file snow.h.

Referenced by predict_plane().

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

inlinestatic

Definition at line 512 of file snow.h.

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

inlinestatic

Definition at line 563 of file snow.h.

Referenced by encode_subband_c0run().

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

static

Definition at line 275 of file snow.h.

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

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 465 of file snow.h.

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

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 200 of file snow.h.

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 210 of file snow.h.

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

static

Definition at line 193 of file snow.h.

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

static

Definition at line 184 of file snow.h.

static void snow_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 235 of file snow.h.

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

inlinestatic

Definition at line 603 of file snow.h.

Referenced by decode_frame().

Variable Documentation

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().

uint8_t ff_qexp[QROOT]

Definition at line 128 of file snowdata.h.

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

const int8_t ff_quant3bA[256]

Definition at line 104 of file snowdata.h.

Referenced by encode_subband_c0run(), init_ref(), and unpack_coeffs().

int ff_scale_mv_ref[MAX_REF_FRAMES][MAX_REF_FRAMES]

Definition at line 129 of file snowdata.h.

Referenced by mca(), and pred_mv().

const BlockNode null_block

static

Initial value:

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

Definition at line 58 of file snow.h.

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

Paris Hackday Code

Data Structures

Macros

Typedefs

Functions

Variables

Macro Definition Documentation

Typedef Documentation

Function Documentation

Variable Documentation