snow.c File Reference

#include "libavutil/intmath.h"
#include "libavutil/log.h"
#include "libavutil/opt.h"
#include "libavutil/thread.h"
#include "avcodec.h"
#include "me_cmp.h"
#include "snow_dwt.h"
#include "internal.h"
#include "snow.h"
#include "snowdata.h"
#include "rangecoder.h"
#include "mathops.h"
#include "h263.h"

Go to the source code of this file.

Macros
#define	MC_STRIDE(x)   (needs[x] ? 64 : stride)
#define	mca(dx, dy, b_w)
#define	mcf(dx, dy)
#define	mcfh(dx, dy)
#define	USE_HALFPEL_PLANE   0

Functions
void	ff_snow_inner_add_yblock (const uint8_t *obmc, const int obmc_stride, uint8_t **block, int b_w, int b_h, int src_x, int src_y, int src_stride, slice_buffer *sb, int add, uint8_t *dst8)
int	ff_snow_get_buffer (SnowContext *s, AVFrame *frame)
void	ff_snow_reset_contexts (SnowContext *s)
int	ff_snow_alloc_blocks (SnowContext *s)
static av_cold void	init_qexp (void)
static void	mc_block (Plane *p, uint8_t *dst, const uint8_t *src, int stride, int b_w, int b_h, int dx, int dy)
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)
	mca (mca(0, mca(0, 16)
av_cold int	ff_snow_common_init (AVCodecContext *avctx)
int	ff_snow_common_init_after_header (AVCodecContext *avctx)
static int	halfpel_interpol (SnowContext *s, uint8_t *halfpel[4][4], AVFrame *frame)
void	ff_snow_release_buffer (AVCodecContext *avctx)
int	ff_snow_frame_start (SnowContext *s)
av_cold void	ff_snow_common_end (SnowContext *s)

Macro Definition Documentation

MC_STRIDE

#define MC_STRIDE

(

x

)

(needs[x] ? 64 : stride)

mca

#define mca	(		dx,
			dy,
			b_w
	)

Value:

static void mc_block_hpel ## dx ## dy ## b_w(uint8_t *dst, const uint8_t *src, ptrdiff_t stride, int h){\
    av_assert2(h==b_w);\
    mc_block(NULL, dst, src-(HTAPS_MAX/2-1)-(HTAPS_MAX/2-1)*stride, stride, b_w, b_w, dx, dy);\
}

Definition at line 416 of file snow.c.

mcf

#define mcf	(		dx,
			dy
	)

Value:

    s->qdsp.put_qpel_pixels_tab       [0][dy+dx/4]=\
    s->qdsp.put_no_rnd_qpel_pixels_tab[0][dy+dx/4]=\
        s->h264qpel.put_h264_qpel_pixels_tab[0][dy+dx/4];\
    s->qdsp.put_qpel_pixels_tab       [1][dy+dx/4]=\
    s->qdsp.put_no_rnd_qpel_pixels_tab[1][dy+dx/4]=\
        s->h264qpel.put_h264_qpel_pixels_tab[1][dy+dx/4];

mcfh

#define mcfh	(		dx,
			dy
	)

Value:

    s->hdsp.put_pixels_tab       [0][dy/4+dx/8]=\
    s->hdsp.put_no_rnd_pixels_tab[0][dy/4+dx/8]=\
        mc_block_hpel ## dx ## dy ## 16;\
    s->hdsp.put_pixels_tab       [1][dy/4+dx/8]=\
    s->hdsp.put_no_rnd_pixels_tab[1][dy/4+dx/8]=\
        mc_block_hpel ## dx ## dy ## 8;

USE_HALFPEL_PLANE

#define USE_HALFPEL_PLANE   0

Definition at line 592 of file snow.c.

Function Documentation

ff_snow_inner_add_yblock()

void ff_snow_inner_add_yblock	(	const uint8_t *	obmc,
		const int	obmc_stride,
		uint8_t **	block,
		int	b_w,
		int	b_h,
		int	src_x,
		int	src_y,
		int	src_stride,
		slice_buffer *	sb,
		int	add,
		uint8_t *	dst8
	)

Definition at line 37 of file snow.c.

Referenced by ff_dwt_init().

ff_snow_get_buffer()

int ff_snow_get_buffer	(	SnowContext *	s,
		AVFrame *	frame
	)

Definition at line 70 of file snow.c.

Referenced by encode_init(), and ff_snow_frame_start().

ff_snow_reset_contexts()

void ff_snow_reset_contexts

(

SnowContext *

s

)

Definition at line 97 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 111 of file snow.c.

Referenced by decode_frame(), and encode_init().

init_qexp()

static av_cold void init_qexp ( void  )

static

Definition at line 126 of file snow.c.

Referenced by mca().

mc_block()

static void mc_block ( Plane *  p, uint8_t *  dst, const uint8_t *  src, int  stride, int  b_w, int  b_h, int  dx, int  dy  )

static

Definition at line 135 of file snow.c.

Referenced by ff_snow_pred_block().

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 328 of file snow.c.

Referenced by add_yblock(), and get_block_rd().

mca()

mca	(	mca(	0,
		mca(	0,
		16
	)

Definition at line 422 of file snow.c.

ff_snow_common_init()

av_cold int ff_snow_common_init

(

AVCodecContext *

avctx

)

Definition at line 439 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 521 of file snow.c.

Referenced by decode_frame(), and encode_frame().

halfpel_interpol()

static int halfpel_interpol ( SnowContext *  s, uint8_t *  halfpel[4][4], AVFrame *  frame  )

static

Definition at line 594 of file snow.c.

Referenced by ff_snow_frame_start().

ff_snow_release_buffer()

void ff_snow_release_buffer

(

AVCodecContext *

avctx

)

Definition at line 646 of file snow.c.

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

ff_snow_frame_start()

int ff_snow_frame_start

(

SnowContext *

s

)

Definition at line 661 of file snow.c.

Referenced by decode_frame(), and encode_frame().

ff_snow_common_end()

av_cold void ff_snow_common_end

(

SnowContext *

s

)

Definition at line 699 of file snow.c.

Referenced by decode_end(), and encode_end().