snow.h File Reference

#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"

Go to the source code of this file.

Data Structures
struct	BlockNode
struct	x_and_coeff
struct	SubBand
struct	Plane
struct	SnowContext

Macros
#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, 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 FF_ME_ITER   3

Definition at line 38 of file snow.h.

Referenced by encode_blocks(), and encode_init().

#define MID_STATE   128

Definition at line 40 of file snow.h.

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

#define MAX_PLANES   4

Definition at line 42 of file snow.h.

#define QSHIFT   5

Definition at line 43 of file snow.h.

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

#define QROOT   (1<<QSHIFT)

Definition at line 44 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 LOSSLESS_QLOG   -128

Definition at line 45 of file snow.h.

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

#define FRAC_BITS   4

Definition at line 46 of file snow.h.

Referenced by add_yblock(), and predict_slice().

#define MAX_REF_FRAMES   8

Definition at line 47 of file snow.h.

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

#define LOG2_OBMC_MAX   8

Definition at line 49 of file snow.h.

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

#define OBMC_MAX   (1<<(LOG2_OBMC_MAX))

Definition at line 50 of file snow.h.

#define BLOCK_INTRA   1

Intra block, inter otherwise.

Definition at line 58 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

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

Definition at line 59 of file snow.h.

Referenced by iterative_me().

#define LOG2_MB_SIZE   4

Definition at line 73 of file snow.h.

Referenced by encode_q_branch(), and ff_snow_alloc_blocks().

#define MB_SIZE   (1<<LOG2_MB_SIZE)

Definition at line 74 of file snow.h.

Referenced by add_yblock(), and predict_slice().

#define ENCODER_EXTRA_BITS   4

Definition at line 75 of file snow.h.

Referenced by encode_frame(), and quantize().

#define HTAPS_MAX   8

Definition at line 76 of file snow.h.

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

#define QBIAS_SHIFT   3

Definition at line 164 of file snow.h.

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

#define ME_CACHE_SIZE   1024

Definition at line 172 of file snow.h.

Referenced by check_4block_inter(), and check_block().

#define QEXPSHIFT   (7-FRAC_BITS+8)

Definition at line 507 of file snow.h.

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

Function Documentation

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

static

Definition at line 202 of file snow.h.

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

static

Definition at line 211 of file snow.h.

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 218 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 228 of file snow.h.

int ff_snow_common_init

(

AVCodecContext *

avctx

)

Referenced by decode_init(), and encode_init().

int ff_snow_common_init_after_header

(

AVCodecContext *

avctx

)

Definition at line 514 of file snow.c.

Referenced by decode_frame(), and encode_frame().

void ff_snow_common_end

(

SnowContext *

s

)

Definition at line 693 of file snow.c.

Referenced by decode_end(), and encode_end().

void ff_snow_release_buffer

(

AVCodecContext *

avctx

)

Definition at line 640 of file snow.c.

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

void ff_snow_reset_contexts

(

SnowContext *

s

)

Definition at line 96 of file snow.c.

Referenced by decode_header(), and encode_header().

int ff_snow_alloc_blocks

(

SnowContext *

s

)

Definition at line 110 of file snow.c.

Referenced by decode_frame(), and encode_init().

int ff_snow_frame_start

(

SnowContext *

s

)

Definition at line 655 of file snow.c.

Referenced by decode_frame(), and encode_frame().

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 327 of file snow.c.

Referenced by add_yblock(), and get_block_rd().

int ff_snow_get_buffer	(	SnowContext *	s,
		AVFrame *	frame
	)

Definition at line 69 of file snow.c.

Referenced by encode_init(), and ff_snow_frame_start().

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 254 of file snow.h.

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

static

Definition at line 270 of file snow.h.

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

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 280 of file snow.h.

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

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

static

Definition at line 404 of file snow.h.

Referenced by predict_plane().

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

static

Definition at line 455 of file snow.h.

Referenced by decode_frame(), and encode_frame().

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 462 of file snow.h.

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

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 487 of file snow.h.

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

inlinestatic

Definition at line 509 of file snow.h.

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

inlinestatic

Definition at line 540 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 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 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 BlockNode null_block

static

Initial value:

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

Definition at line 64 of file snow.h.

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

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().

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 int8_t ff_quant3bA[256]

Definition at line 104 of file snowdata.h.

Referenced by encode_subband_c0run(), and unpack_coeffs().