libavcodec/snow.c File Reference

#include "libavutil/intmath.h"
#include "libavutil/log.h"
#include "libavutil/opt.h"
#include "avcodec.h"
#include "dsputil.h"
#include "dwt.h"
#include "snow.h"
#include "snowdata.h"
#include "rangecoder.h"
#include "mathops.h"
#include "h263.h"

Go to the source code of this file.

Defines
#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)
void	ff_snow_reset_contexts (SnowContext *s)
int	ff_snow_alloc_blocks (SnowContext *s)
static 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, int stride, int sx, int sy, int b_w, int b_h, BlockNode *block, int plane_index, int w, int h)
	mca (mca(0, mca(0, 16)
int	ff_snow_common_init_after_header (AVCodecContext *avctx)
static void	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)

---

Define Documentation

#define MC_STRIDE

(

x

)

(needs[x] ? 64 : stride)

Referenced by mc_block().

#define mca	(	dx,
		dy,
		b_w		)

Value:

static void mc_block_hpel ## dx ## dy ## b_w(uint8_t *dst, const uint8_t *src, int 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 379 of file snow.c.

#define mcf	(	dx,
		dy		)

Value:

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

Referenced by mca().

#define mcfh	(	dx,
		dy		)

Value:

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

Referenced by mca().

#define USE_HALFPEL_PLANE   0

Definition at line 536 of file snow.c.

Referenced by ff_snow_frame_start().

---

Function Documentation

int ff_snow_alloc_blocks

(

SnowContext *

s

)

Definition at line 82 of file snow.c.

Referenced by decode_frame(), and encode_init().

av_cold void ff_snow_common_end

(

SnowContext *

s

)

Definition at line 645 of file snow.c.

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

int ff_snow_common_init_after_header

(

AVCodecContext *

avctx

)

Definition at line 465 of file snow.c.

Referenced by decode_frame(), and encode_frame().

int ff_snow_frame_start

(

SnowContext *

s

)

Definition at line 593 of file snow.c.

Referenced by decode_frame(), and encode_frame().

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 35 of file snow.c.

Referenced by ff_dwt_init().

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 296 of file snow.c.

Referenced by add_yblock(), and get_block_rd().

void ff_snow_release_buffer

(

AVCodecContext *

avctx

)

Definition at line 580 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 68 of file snow.c.

Referenced by decode_header(), and encode_header().

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

Definition at line 538 of file snow.c.

Referenced by ff_snow_frame_start().

static void init_qexp

(

void

)

[static]

Definition at line 94 of file snow.c.

Referenced by mca().

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 103 of file snow.c.

Referenced by ff_snow_pred_block().

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

Definition at line 385 of file snow.c.