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vp8dsp.c File Reference

VP8 compatible video decoder. More...

#include "dsputil.h"
#include "vp8dsp.h"
#include "libavutil/common.h"

Go to the source code of this file.

Macros

#define MUL_20091(a)   ((((a)*20091) >> 16) + (a))
 
#define MUL_35468(a)   (((a)*35468) >> 16)
 
#define LOAD_PIXELS
 
#define clip_int8(n)   (cm[n+0x80]-0x80)
 
#define LOOP_FILTER(dir, size, stridea, strideb, maybe_inline)
 
#define UV_LOOP_FILTER(dir, stridea, strideb)
 
#define PUT_PIXELS(WIDTH)
 
#define FILTER_6TAP(src, F, stride)
 
#define FILTER_4TAP(src, F, stride)
 
#define VP8_EPEL_H(SIZE, TAPS)
 
#define VP8_EPEL_V(SIZE, TAPS)
 
#define VP8_EPEL_HV(SIZE, HTAPS, VTAPS)
 
#define VP8_BILINEAR(SIZE)
 
#define VP8_MC_FUNC(IDX, SIZE)
 
#define VP8_BILINEAR_MC_FUNC(IDX, SIZE)
 

Functions

static void vp8_luma_dc_wht_c (int16_t block[4][4][16], int16_t dc[16])
 
static void vp8_luma_dc_wht_dc_c (int16_t block[4][4][16], int16_t dc[16])
 
static void vp8_idct_add_c (uint8_t *dst, int16_t block[16], ptrdiff_t stride)
 
static void vp8_idct_dc_add_c (uint8_t *dst, int16_t block[16], ptrdiff_t stride)
 
static void vp8_idct_dc_add4uv_c (uint8_t *dst, int16_t block[4][16], ptrdiff_t stride)
 
static void vp8_idct_dc_add4y_c (uint8_t *dst, int16_t block[4][16], ptrdiff_t stride)
 
static av_always_inline void filter_common (uint8_t *p, ptrdiff_t stride, int is4tap)
 
static av_always_inline int simple_limit (uint8_t *p, ptrdiff_t stride, int flim)
 
static av_always_inline int normal_limit (uint8_t *p, ptrdiff_t stride, int E, int I)
 E - limit at the macroblock edge I - limit for interior difference.
 
static av_always_inline int hev (uint8_t *p, ptrdiff_t stride, int thresh)
 
static av_always_inline void filter_mbedge (uint8_t *p, ptrdiff_t stride)
 
static void vp8_v_loop_filter_simple_c (uint8_t *dst, ptrdiff_t stride, int flim)
 
static void vp8_h_loop_filter_simple_c (uint8_t *dst, ptrdiff_t stride, int flim)
 
av_cold void ff_vp8dsp_init (VP8DSPContext *dsp)
 

Variables

static const uint8_t subpel_filters [7][6]
 

Detailed Description

VP8 compatible video decoder.

Definition in file vp8dsp.c.

Macro Definition Documentation

#define MUL_20091 (   a)    ((((a)*20091) >> 16) + (a))

Definition at line 78 of file vp8dsp.c.

Referenced by vp8_idct_add_c().

#define MUL_35468 (   a)    (((a)*35468) >> 16)

Definition at line 79 of file vp8dsp.c.

Referenced by vp8_idct_add_c().

#define LOAD_PIXELS
Value:
int av_unused p3 = p[-4*stride];\
int av_unused p2 = p[-3*stride];\
int av_unused p1 = p[-2*stride];\
int av_unused p0 = p[-1*stride];\
int av_unused q0 = p[ 0*stride];\
int av_unused q1 = p[ 1*stride];\
int av_unused q2 = p[ 2*stride];\
int av_unused q3 = p[ 3*stride];

Definition at line 147 of file vp8dsp.c.

Referenced by filter_common(), filter_mbedge(), hev(), normal_limit(), and simple_limit().

#define clip_int8 (   n)    (cm[n+0x80]-0x80)

Definition at line 157 of file vp8dsp.c.

Referenced by filter_common(), and filter_mbedge().

#define LOOP_FILTER (   dir,
  size,
  stridea,
  strideb,
  maybe_inline 
)
Value:
static maybe_inline void vp8_ ## dir ## _loop_filter ## size ## _c(uint8_t *dst, ptrdiff_t stride,\
int flim_E, int flim_I, int hev_thresh)\
{\
int i;\
\
for (i = 0; i < size; i++)\
if (normal_limit(dst+i*stridea, strideb, flim_E, flim_I)) {\
if (hev(dst+i*stridea, strideb, hev_thresh))\
filter_common(dst+i*stridea, strideb, 1);\
else\
filter_mbedge(dst+i*stridea, strideb);\
}\
}\
\
static maybe_inline void vp8_ ## dir ## _loop_filter ## size ## _inner_c(uint8_t *dst, ptrdiff_t stride,\
int flim_E, int flim_I, int hev_thresh)\
{\
int i;\
\
for (i = 0; i < size; i++)\
if (normal_limit(dst+i*stridea, strideb, flim_E, flim_I)) {\
int hv = hev(dst+i*stridea, strideb, hev_thresh);\
if (hv) \
filter_common(dst+i*stridea, strideb, 1);\
else \
filter_common(dst+i*stridea, strideb, 0);\
}\
}

Definition at line 237 of file vp8dsp.c.

#define UV_LOOP_FILTER (   dir,
  stridea,
  strideb 
)
Value:
LOOP_FILTER(dir, 8, stridea, strideb, av_always_inline) \
static void vp8_ ## dir ## _loop_filter8uv_c(uint8_t *dstU, uint8_t *dstV, ptrdiff_t stride,\
int fE, int fI, int hev_thresh)\
{\
vp8_ ## dir ## _loop_filter8_c(dstU, stride, fE, fI, hev_thresh);\
vp8_ ## dir ## _loop_filter8_c(dstV, stride, fE, fI, hev_thresh);\
}\
static void vp8_ ## dir ## _loop_filter8uv_inner_c(uint8_t *dstU, uint8_t *dstV, ptrdiff_t stride,\
int fE, int fI, int hev_thresh)\
{\
vp8_ ## dir ## _loop_filter8_inner_c(dstU, stride, fE, fI, hev_thresh);\
vp8_ ## dir ## _loop_filter8_inner_c(dstV, stride, fE, fI, hev_thresh);\
}

Definition at line 270 of file vp8dsp.c.

#define PUT_PIXELS (   WIDTH)
Value:
static void put_vp8_pixels ## WIDTH ##_c(uint8_t *dst, ptrdiff_t dststride, uint8_t *src, ptrdiff_t srcstride, int h, int x, int y) { \
int i; \
for (i = 0; i < h; i++, dst+= dststride, src+= srcstride) { \
memcpy(dst, src, WIDTH); \
} \
}

Definition at line 316 of file vp8dsp.c.

#define FILTER_6TAP (   src,
  F,
  stride 
)
Value:
cm[(F[2]*src[x+0*stride] - F[1]*src[x-1*stride] + F[0]*src[x-2*stride] + \
F[3]*src[x+1*stride] - F[4]*src[x+2*stride] + F[5]*src[x+3*stride] + 64) >> 7]

Definition at line 328 of file vp8dsp.c.

#define FILTER_4TAP (   src,
  F,
  stride 
)
Value:
cm[(F[2]*src[x+0*stride] - F[1]*src[x-1*stride] + \
F[3]*src[x+1*stride] - F[4]*src[x+2*stride] + 64) >> 7]

Definition at line 332 of file vp8dsp.c.

#define VP8_EPEL_H (   SIZE,
  TAPS 
)
Value:
static void put_vp8_epel ## SIZE ## _h ## TAPS ## _c(uint8_t *dst, ptrdiff_t dststride, uint8_t *src, ptrdiff_t srcstride, int h, int mx, int my) \
{ \
const uint8_t *filter = subpel_filters[mx-1]; \
uint8_t *cm = ff_cropTbl + MAX_NEG_CROP; \
int x, y; \
\
for (y = 0; y < h; y++) { \
for (x = 0; x < SIZE; x++) \
dst[x] = FILTER_ ## TAPS ## TAP(src, filter, 1); \
dst += dststride; \
src += srcstride; \
} \
}

Definition at line 336 of file vp8dsp.c.

#define VP8_EPEL_V (   SIZE,
  TAPS 
)
Value:
static void put_vp8_epel ## SIZE ## _v ## TAPS ## _c(uint8_t *dst, ptrdiff_t dststride, uint8_t *src, ptrdiff_t srcstride, int h, int mx, int my) \
{ \
const uint8_t *filter = subpel_filters[my-1]; \
uint8_t *cm = ff_cropTbl + MAX_NEG_CROP; \
int x, y; \
\
for (y = 0; y < h; y++) { \
for (x = 0; x < SIZE; x++) \
dst[x] = FILTER_ ## TAPS ## TAP(src, filter, srcstride); \
dst += dststride; \
src += srcstride; \
} \
}

Definition at line 350 of file vp8dsp.c.

#define VP8_EPEL_HV (   SIZE,
  HTAPS,
  VTAPS 
)
Value:
static void put_vp8_epel ## SIZE ## _h ## HTAPS ## v ## VTAPS ## _c(uint8_t *dst, ptrdiff_t dststride, uint8_t *src, ptrdiff_t srcstride, int h, int mx, int my) \
{ \
const uint8_t *filter = subpel_filters[mx-1]; \
uint8_t *cm = ff_cropTbl + MAX_NEG_CROP; \
int x, y; \
uint8_t tmp_array[(2*SIZE+VTAPS-1)*SIZE]; \
uint8_t *tmp = tmp_array; \
src -= (2-(VTAPS==4))*srcstride; \
\
for (y = 0; y < h+VTAPS-1; y++) { \
for (x = 0; x < SIZE; x++) \
tmp[x] = FILTER_ ## HTAPS ## TAP(src, filter, 1); \
tmp += SIZE; \
src += srcstride; \
} \
\
tmp = tmp_array + (2-(VTAPS==4))*SIZE; \
filter = subpel_filters[my-1]; \
\
for (y = 0; y < h; y++) { \
for (x = 0; x < SIZE; x++) \
dst[x] = FILTER_ ## VTAPS ## TAP(tmp, filter, SIZE); \
dst += dststride; \
tmp += SIZE; \
} \
}

Definition at line 364 of file vp8dsp.c.

#define VP8_BILINEAR (   SIZE)

Definition at line 417 of file vp8dsp.c.

#define VP8_MC_FUNC (   IDX,
  SIZE 
)
Value:
dsp->put_vp8_epel_pixels_tab[IDX][0][0] = put_vp8_pixels ## SIZE ## _c; \
dsp->put_vp8_epel_pixels_tab[IDX][0][1] = put_vp8_epel ## SIZE ## _h4_c; \
dsp->put_vp8_epel_pixels_tab[IDX][0][2] = put_vp8_epel ## SIZE ## _h6_c; \
dsp->put_vp8_epel_pixels_tab[IDX][1][0] = put_vp8_epel ## SIZE ## _v4_c; \
dsp->put_vp8_epel_pixels_tab[IDX][1][1] = put_vp8_epel ## SIZE ## _h4v4_c; \
dsp->put_vp8_epel_pixels_tab[IDX][1][2] = put_vp8_epel ## SIZE ## _h6v4_c; \
dsp->put_vp8_epel_pixels_tab[IDX][2][0] = put_vp8_epel ## SIZE ## _v6_c; \
dsp->put_vp8_epel_pixels_tab[IDX][2][1] = put_vp8_epel ## SIZE ## _h4v6_c; \
dsp->put_vp8_epel_pixels_tab[IDX][2][2] = put_vp8_epel ## SIZE ## _h6v6_c

Definition at line 472 of file vp8dsp.c.

Referenced by ff_vp8dsp_init().

#define VP8_BILINEAR_MC_FUNC (   IDX,
  SIZE 
)
Value:
dsp->put_vp8_bilinear_pixels_tab[IDX][0][0] = put_vp8_pixels ## SIZE ## _c; \
dsp->put_vp8_bilinear_pixels_tab[IDX][0][1] = put_vp8_bilinear ## SIZE ## _h_c; \
dsp->put_vp8_bilinear_pixels_tab[IDX][0][2] = put_vp8_bilinear ## SIZE ## _h_c; \
dsp->put_vp8_bilinear_pixels_tab[IDX][1][0] = put_vp8_bilinear ## SIZE ## _v_c; \
dsp->put_vp8_bilinear_pixels_tab[IDX][1][1] = put_vp8_bilinear ## SIZE ## _hv_c; \
dsp->put_vp8_bilinear_pixels_tab[IDX][1][2] = put_vp8_bilinear ## SIZE ## _hv_c; \
dsp->put_vp8_bilinear_pixels_tab[IDX][2][0] = put_vp8_bilinear ## SIZE ## _v_c; \
dsp->put_vp8_bilinear_pixels_tab[IDX][2][1] = put_vp8_bilinear ## SIZE ## _hv_c; \
dsp->put_vp8_bilinear_pixels_tab[IDX][2][2] = put_vp8_bilinear ## SIZE ## _hv_c

Definition at line 483 of file vp8dsp.c.

Referenced by ff_vp8dsp_init().

Function Documentation

static void vp8_luma_dc_wht_c ( int16_t  block[4][4][16],
int16_t  dc[16] 
)
static

Definition at line 32 of file vp8dsp.c.

Referenced by ff_vp8dsp_init().

static void vp8_luma_dc_wht_dc_c ( int16_t  block[4][4][16],
int16_t  dc[16] 
)
static

Definition at line 65 of file vp8dsp.c.

Referenced by ff_vp8dsp_init().

static void vp8_idct_add_c ( uint8_t *  dst,
int16_t  block[16],
ptrdiff_t  stride 
)
static

Definition at line 81 of file vp8dsp.c.

Referenced by ff_vp8dsp_init().

static void vp8_idct_dc_add_c ( uint8_t *  dst,
int16_t  block[16],
ptrdiff_t  stride 
)
static

Definition at line 116 of file vp8dsp.c.

Referenced by ff_vp8dsp_init(), vp8_idct_dc_add4uv_c(), and vp8_idct_dc_add4y_c().

static void vp8_idct_dc_add4uv_c ( uint8_t *  dst,
int16_t  block[4][16],
ptrdiff_t  stride 
)
static

Definition at line 130 of file vp8dsp.c.

Referenced by ff_vp8dsp_init().

static void vp8_idct_dc_add4y_c ( uint8_t *  dst,
int16_t  block[4][16],
ptrdiff_t  stride 
)
static

Definition at line 138 of file vp8dsp.c.

Referenced by ff_vp8dsp_init().

static av_always_inline void filter_common ( uint8_t *  p,
ptrdiff_t  stride,
int  is4tap 
)
static

Definition at line 159 of file vp8dsp.c.

Referenced by vp8_h_loop_filter_simple_c(), and vp8_v_loop_filter_simple_c().

static av_always_inline int simple_limit ( uint8_t *  p,
ptrdiff_t  stride,
int  flim 
)
static

Definition at line 190 of file vp8dsp.c.

Referenced by normal_limit(), vp8_h_loop_filter_simple_c(), and vp8_v_loop_filter_simple_c().

static av_always_inline int normal_limit ( uint8_t *  p,
ptrdiff_t  stride,
int  E,
int  I 
)
static

E - limit at the macroblock edge I - limit for interior difference.

Definition at line 200 of file vp8dsp.c.

static av_always_inline int hev ( uint8_t *  p,
ptrdiff_t  stride,
int  thresh 
)
static

Definition at line 209 of file vp8dsp.c.

static av_always_inline void filter_mbedge ( uint8_t *  p,
ptrdiff_t  stride 
)
static

Definition at line 215 of file vp8dsp.c.

static void vp8_v_loop_filter_simple_c ( uint8_t *  dst,
ptrdiff_t  stride,
int  flim 
)
static

Definition at line 288 of file vp8dsp.c.

Referenced by ff_vp8dsp_init().

static void vp8_h_loop_filter_simple_c ( uint8_t *  dst,
ptrdiff_t  stride,
int  flim 
)
static

Definition at line 297 of file vp8dsp.c.

Referenced by ff_vp8dsp_init().

av_cold void ff_vp8dsp_init ( VP8DSPContext *  dsp)

Definition at line 494 of file vp8dsp.c.

Referenced by vp8_decode_init().

Variable Documentation

const uint8_t subpel_filters[7][6]
static
Initial value:
= {
{ 0, 6, 123, 12, 1, 0 },
{ 2, 11, 108, 36, 8, 1 },
{ 0, 9, 93, 50, 6, 0 },
{ 3, 16, 77, 77, 16, 3 },
{ 0, 6, 50, 93, 9, 0 },
{ 1, 8, 36, 108, 11, 2 },
{ 0, 1, 12, 123, 6, 0 },
}

Definition at line 306 of file vp8dsp.c.

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