FFmpeg
Macros | Functions | Variables
vp8dsp.c File Reference
#include "config_components.h"
#include "libavutil/common.h"
#include "libavutil/intreadwrite.h"
#include "mathops.h"
#include "vp8dsp.h"

Go to the source code of this file.

Macros

#define MK_IDCT_DC_ADD4_C(name)
 
#define LOAD_PIXELS
 
#define clip_int8(n)   (cm[(n) + 0x80] - 0x80)
 
#define NORMAL_LIMIT(vpn)
 E - limit at the macroblock edge I - limit for interior difference. More...
 
#define LOOP_FILTER(vpn, dir, size, stridea, strideb, maybe_inline)
 
#define UV_LOOP_FILTER(vpn, dir, stridea, strideb)
 
#define LOOP_FILTER_SIMPLE(vpn)
 
#define LOOP_FILTERS(vpn)
 
#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 VP78_MC_FUNC(IDX, SIZE)
 
#define VP78_BILINEAR_MC_FUNC(IDX, SIZE)
 

Functions

static av_always_inline void filter_common (uint8_t *p, ptrdiff_t stride, int is4tap, int is_vp7)
 
static av_always_inline void vp7_filter_common (uint8_t *p, ptrdiff_t stride, int is4tap)
 
static av_always_inline void vp8_filter_common (uint8_t *p, ptrdiff_t stride, int is4tap)
 
static av_always_inline int vp7_simple_limit (uint8_t *p, ptrdiff_t stride, int flim)
 
static av_always_inline int vp8_simple_limit (uint8_t *p, ptrdiff_t stride, int flim)
 
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)
 
av_cold void ff_vp78dsp_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

◆ MK_IDCT_DC_ADD4_C

#define MK_IDCT_DC_ADD4_C (   name)
Value:
static void name ## _idct_dc_add4uv_c(uint8_t *dst, int16_t block[4][16], \
ptrdiff_t stride) \
{ \
name ## _idct_dc_add_c(dst + stride * 0 + 0, block[0], stride); \
name ## _idct_dc_add_c(dst + stride * 0 + 4, block[1], stride); \
name ## _idct_dc_add_c(dst + stride * 4 + 0, block[2], stride); \
name ## _idct_dc_add_c(dst + stride * 4 + 4, block[3], stride); \
} \
\
static void name ## _idct_dc_add4y_c(uint8_t *dst, int16_t block[4][16], \
ptrdiff_t stride) \
{ \
name ## _idct_dc_add_c(dst + 0, block[0], stride); \
name ## _idct_dc_add_c(dst + 4, block[1], stride); \
name ## _idct_dc_add_c(dst + 8, block[2], stride); \
name ## _idct_dc_add_c(dst + 12, block[3], stride); \
}

Definition at line 36 of file vp8dsp.c.

◆ LOAD_PIXELS

#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 251 of file vp8dsp.c.

◆ clip_int8

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

Definition at line 261 of file vp8dsp.c.

◆ NORMAL_LIMIT

#define NORMAL_LIMIT (   vpn)
Value:
static av_always_inline int vp ## vpn ## _normal_limit(uint8_t *p, \
ptrdiff_t stride, \
int E, int I) \
{ \
LOAD_PIXELS \
return vp ## vpn ## _simple_limit(p, stride, E) && \
FFABS(p3 - p2) <= I && FFABS(p2 - p1) <= I && \
FFABS(p1 - p0) <= I && FFABS(q3 - q2) <= I && \
FFABS(q2 - q1) <= I && FFABS(q1 - q0) <= I; \
}

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

Definition at line 329 of file vp8dsp.c.

◆ LOOP_FILTER

#define LOOP_FILTER (   vpn,
  dir,
  size,
  stridea,
  strideb,
  maybe_inline 
)

Definition at line 373 of file vp8dsp.c.

◆ UV_LOOP_FILTER

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

Definition at line 410 of file vp8dsp.c.

◆ LOOP_FILTER_SIMPLE

#define LOOP_FILTER_SIMPLE (   vpn)
Value:
static void vpn ## _v_loop_filter_simple_c(uint8_t *dst, ptrdiff_t stride, \
int flim) \
{ \
int i; \
for (i = 0; i < 16; i++) \
if (vpn ## _simple_limit(dst + i, stride, flim)) \
vpn ## _filter_common(dst + i, stride, 1); \
} \
\
static void vpn ## _h_loop_filter_simple_c(uint8_t *dst, ptrdiff_t stride, \
int flim) \
{ \
int i; \
for (i = 0; i < 16; i++) \
if (vpn ## _simple_limit(dst + i * stride, 1, flim)) \
vpn ## _filter_common(dst + i * stride, 1, 1); \
}

Definition at line 433 of file vp8dsp.c.

◆ LOOP_FILTERS

#define LOOP_FILTERS (   vpn)
Value:
LOOP_FILTER(vpn, v, 16, 1, stride, ) \
LOOP_FILTER(vpn, h, 16, stride, 1, ) \
UV_LOOP_FILTER(vpn, v, 1, stride) \
UV_LOOP_FILTER(vpn, h, stride, 1) \
LOOP_FILTER_SIMPLE(vpn) \

Definition at line 452 of file vp8dsp.c.

◆ PUT_PIXELS

#define PUT_PIXELS (   WIDTH)
Value:
static void put_vp8_pixels ## WIDTH ## _c(uint8_t *dst, ptrdiff_t dststride, \
const 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 469 of file vp8dsp.c.

◆ FILTER_6TAP

#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 483 of file vp8dsp.c.

◆ FILTER_4TAP

#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 488 of file vp8dsp.c.

◆ VP8_EPEL_H

#define VP8_EPEL_H (   SIZE,
  TAPS 
)
Value:
static void put_vp8_epel ## SIZE ## _h ## TAPS ## _c(uint8_t *dst, \
ptrdiff_t dststride, \
const uint8_t *src, \
ptrdiff_t srcstride, \
int h, int mx, int my) \
{ \
const uint8_t *filter = subpel_filters[mx - 1]; \
const uint8_t *cm = ff_crop_tab + 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 492 of file vp8dsp.c.

◆ VP8_EPEL_V

#define VP8_EPEL_V (   SIZE,
  TAPS 
)
Value:
static void put_vp8_epel ## SIZE ## _v ## TAPS ## _c(uint8_t *dst, \
ptrdiff_t dststride, \
const uint8_t *src, \
ptrdiff_t srcstride, \
int h, int mx, int my) \
{ \
const uint8_t *filter = subpel_filters[my - 1]; \
const uint8_t *cm = ff_crop_tab + 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 510 of file vp8dsp.c.

◆ VP8_EPEL_HV

#define VP8_EPEL_HV (   SIZE,
  HTAPS,
  VTAPS 
)

Definition at line 528 of file vp8dsp.c.

◆ VP8_BILINEAR

#define VP8_BILINEAR (   SIZE)

Definition at line 587 of file vp8dsp.c.

◆ VP78_MC_FUNC

#define VP78_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 646 of file vp8dsp.c.

◆ VP78_BILINEAR_MC_FUNC

#define VP78_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 657 of file vp8dsp.c.

Function Documentation

◆ filter_common()

static av_always_inline void filter_common ( uint8_t *  p,
ptrdiff_t  stride,
int  is4tap,
int  is_vp7 
)
static

Definition at line 263 of file vp8dsp.c.

Referenced by vp7_filter_common(), and vp8_filter_common().

◆ vp7_filter_common()

static av_always_inline void vp7_filter_common ( uint8_t *  p,
ptrdiff_t  stride,
int  is4tap 
)
static

Definition at line 299 of file vp8dsp.c.

◆ vp8_filter_common()

static av_always_inline void vp8_filter_common ( uint8_t *  p,
ptrdiff_t  stride,
int  is4tap 
)
static

Definition at line 305 of file vp8dsp.c.

◆ vp7_simple_limit()

static av_always_inline int vp7_simple_limit ( uint8_t *  p,
ptrdiff_t  stride,
int  flim 
)
static

Definition at line 311 of file vp8dsp.c.

◆ vp8_simple_limit()

static av_always_inline int vp8_simple_limit ( uint8_t *  p,
ptrdiff_t  stride,
int  flim 
)
static

Definition at line 318 of file vp8dsp.c.

◆ hev()

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

Definition at line 345 of file vp8dsp.c.

◆ filter_mbedge()

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

Definition at line 351 of file vp8dsp.c.

◆ ff_vp78dsp_init()

av_cold void ff_vp78dsp_init ( VP8DSPContext dsp)

Definition at line 668 of file vp8dsp.c.

Referenced by check_mc(), and vp78_decode_init().

Variable Documentation

◆ subpel_filters

const uint8_t subpel_filters[7][6]
static
q1
static const uint8_t q1[256]
Definition: twofish.c:100
name
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf default minimum maximum flags name is the option name
Definition: writing_filters.txt:88
av_unused
#define av_unused
Definition: attributes.h:131
F
#define F(x)
filter
filter_frame For filters that do not use the this method is called when a frame is pushed to the filter s input It can be called at any time except in a reentrant way If the input frame is enough to produce then the filter should push the output frames on the output link immediately As an exception to the previous rule if the input frame is enough to produce several output frames then the filter needs output only at least one per link The additional frames can be left buffered in the filter
Definition: filter_design.txt:228
ff_crop_tab
#define ff_crop_tab
Definition: motionpixels_tablegen.c:26
SIZE
#define SIZE
Definition: cabac.c:24
q0
static const uint8_t q0[256]
Definition: twofish.c:81
E
#define E
Definition: avdct.c:32
FFABS
#define FFABS(a)
Absolute value, Note, INT_MIN / INT64_MIN result in undefined behavior as they are not representable ...
Definition: common.h:64
WIDTH
#define WIDTH
Definition: c93.c:44
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:269
av_always_inline
#define av_always_inline
Definition: attributes.h:49
stride
#define stride
Definition: h264pred_template.c:537
cm
#define cm
Definition: dvbsubdec.c:39
LOOP_FILTER
#define LOOP_FILTER(vpn, dir, size, stridea, strideb, maybe_inline)
Definition: vp8dsp.c:373
_
#define _
src
INIT_CLIP pixel * src
Definition: h264pred_template.c:418
block
The exact code depends on how similar the blocks are and how related they are to the block
Definition: filter_design.txt:207
h
h
Definition: vp9dsp_template.c:2038
MAX_NEG_CROP
#define MAX_NEG_CROP
Definition: mathops.h:31
subpel_filters
static const uint8_t subpel_filters[7][6]
Definition: vp8dsp.c:459