FFmpeg
Macros | Functions
motion_est_template.c File Reference
#include "libavutil/qsort.h"
#include "mpegvideo.h"

Go to the source code of this file.

Macros

#define LOAD_COMMON
 
#define CHECK_HALF_MV(dx, dy, x, y)
 
#define CHECK_QUARTER_MV(dx, dy, x, y)
 
#define CHECK_MV(x, y)
 
#define CHECK_CLIPPED_MV(ax, ay)
 
#define CHECK_MV_DIR(x, y, new_dir)
 
#define check(x, y, S, v)
 
#define LOAD_COMMON2
 
#define SAB_CHECK_MV(ax, ay)
 
#define MAX_SAB_SIZE   ME_MAP_SIZE
 

Functions

static int hpel_motion_search (MpegEncContext *s, int *mx_ptr, int *my_ptr, int dmin, int src_index, int ref_index, int size, int h)
 
static int no_sub_motion_search (MpegEncContext *s, int *mx_ptr, int *my_ptr, int dmin, int src_index, int ref_index, int size, int h)
 
static int get_mb_score (MpegEncContext *s, int mx, int my, int src_index, int ref_index, int size, int h, int add_rate)
 
int ff_get_mb_score (MpegEncContext *s, int mx, int my, int src_index, int ref_index, int size, int h, int add_rate)
 
static int qpel_motion_search (MpegEncContext *s, int *mx_ptr, int *my_ptr, int dmin, int src_index, int ref_index, int size, int h)
 
static av_always_inline int small_diamond_search (MpegEncContext *s, int *best, int dmin, int src_index, int ref_index, const int penalty_factor, int size, int h, int flags)
 
static int funny_diamond_search (MpegEncContext *s, int *best, int dmin, int src_index, int ref_index, const int penalty_factor, int size, int h, int flags)
 
static int hex_search (MpegEncContext *s, int *best, int dmin, int src_index, int ref_index, const int penalty_factor, int size, int h, int flags, int dia_size)
 
static int l2s_dia_search (MpegEncContext *s, int *best, int dmin, int src_index, int ref_index, const int penalty_factor, int size, int h, int flags)
 
static int umh_search (MpegEncContext *s, int *best, int dmin, int src_index, int ref_index, const int penalty_factor, int size, int h, int flags)
 
static int full_search (MpegEncContext *s, int *best, int dmin, int src_index, int ref_index, const int penalty_factor, int size, int h, int flags)
 
static int sab_diamond_search (MpegEncContext *s, int *best, int dmin, int src_index, int ref_index, const int penalty_factor, int size, int h, int flags)
 
static int var_diamond_search (MpegEncContext *s, int *best, int dmin, int src_index, int ref_index, const int penalty_factor, int size, int h, int flags)
 
static av_always_inline int diamond_search (MpegEncContext *s, int *best, int dmin, int src_index, int ref_index, const int penalty_factor, int size, int h, int flags)
 
static av_always_inline int epzs_motion_search_internal (MpegEncContext *s, int *mx_ptr, int *my_ptr, int P[10][2], int src_index, int ref_index, int16_t(*last_mv)[2], int ref_mv_scale, int flags, int size, int h)
 
int ff_epzs_motion_search (MpegEncContext *s, int *mx_ptr, int *my_ptr, int P[10][2], int src_index, int ref_index, int16_t(*last_mv)[2], int ref_mv_scale, int size, int h)
 
static int epzs_motion_search2 (MpegEncContext *s, int *mx_ptr, int *my_ptr, int P[10][2], int src_index, int ref_index, int16_t(*last_mv)[2], int ref_mv_scale, const int size)
 

Detailed Description

Motion estimation template.

Definition in file motion_est_template.c.

Macro Definition Documentation

◆ LOAD_COMMON

#define LOAD_COMMON
Value:
uint32_t av_unused * const score_map= c->score_map;\
const int av_unused xmin= c->xmin;\
const int av_unused ymin= c->ymin;\
const int av_unused xmax= c->xmax;\
const int av_unused ymax= c->ymax;\
const uint8_t *mv_penalty = c->current_mv_penalty; \
const int pred_x= c->pred_x;\
const int pred_y= c->pred_y;\

Definition at line 31 of file motion_est_template.c.

◆ CHECK_HALF_MV

#define CHECK_HALF_MV (   dx,
  dy,
  x,
  y 
)
Value:
{\
const int hx= 2*(x)+(dx);\
const int hy= 2*(y)+(dy);\
d= cmp_hpel(s, x, y, dx, dy, size, h, ref_index, src_index, cmp_sub, chroma_cmp_sub, flags);\
d += (mv_penalty[hx - pred_x] + mv_penalty[hy - pred_y])*penalty_factor;\
COPY3_IF_LT(dmin, d, bx, hx, by, hy)\
}

Definition at line 41 of file motion_est_template.c.

◆ CHECK_QUARTER_MV

#define CHECK_QUARTER_MV (   dx,
  dy,
  x,
  y 
)
Value:
{\
const int hx= 4*(x)+(dx);\
const int hy= 4*(y)+(dy);\
d= cmp_qpel(s, x, y, dx, dy, size, h, ref_index, src_index, cmpf, chroma_cmpf, flags);\
d += (mv_penalty[hx - pred_x] + mv_penalty[hy - pred_y])*penalty_factor;\
COPY3_IF_LT(dmin, d, bx, hx, by, hy)\
}

Definition at line 198 of file motion_est_template.c.

◆ CHECK_MV

#define CHECK_MV (   x,
  y 
)
Value:
{\
const unsigned key = ((unsigned)(y)<<ME_MAP_MV_BITS) + (x) + map_generation;\
const int index= (((unsigned)(y)<<ME_MAP_SHIFT) + (x))&(ME_MAP_SIZE-1);\
av_assert2((x) >= xmin);\
av_assert2((x) <= xmax);\
av_assert2((y) >= ymin);\
av_assert2((y) <= ymax);\
if(map[index]!=key){\
d= cmp(s, x, y, 0, 0, size, h, ref_index, src_index, cmpf, chroma_cmpf, flags);\
map[index]= key;\
score_map[index]= d;\
d += (mv_penalty[((x)*(1<<shift))-pred_x] + mv_penalty[((y)*(1<<shift))-pred_y])*penalty_factor;\
COPY3_IF_LT(dmin, d, best[0], x, best[1], y)\
}\
}

Definition at line 361 of file motion_est_template.c.

◆ CHECK_CLIPPED_MV

#define CHECK_CLIPPED_MV (   ax,
  ay 
)
Value:
{\
const int Lx= ax;\
const int Ly= ay;\
const int Lx2= FFMAX(xmin, FFMIN(Lx, xmax));\
const int Ly2= FFMAX(ymin, FFMIN(Ly, ymax));\
CHECK_MV(Lx2, Ly2)\
}

Definition at line 378 of file motion_est_template.c.

◆ CHECK_MV_DIR

#define CHECK_MV_DIR (   x,
  y,
  new_dir 
)
Value:
{\
const unsigned key = ((unsigned)(y)<<ME_MAP_MV_BITS) + (x) + map_generation;\
const int index= (((unsigned)(y)<<ME_MAP_SHIFT) + (x))&(ME_MAP_SIZE-1);\
if(map[index]!=key){\
d= cmp(s, x, y, 0, 0, size, h, ref_index, src_index, cmpf, chroma_cmpf, flags);\
map[index]= key;\
score_map[index]= d;\
d += (mv_penalty[(int)((unsigned)(x)<<shift)-pred_x] + mv_penalty[(int)((unsigned)(y)<<shift)-pred_y])*penalty_factor;\
if(d<dmin){\
best[0]=x;\
best[1]=y;\
dmin=d;\
next_dir= new_dir;\
}\
}\
}

Definition at line 387 of file motion_est_template.c.

◆ check

#define check (   x,
  y,
  S,
  v 
)
Value:
if( (x)<(xmin<<(S)) ) av_log(NULL, AV_LOG_ERROR, "%d %d %d %d %d xmin" #v, xmin, (x), (y), s->mb_x, s->mb_y);\
if( (x)>(xmax<<(S)) ) av_log(NULL, AV_LOG_ERROR, "%d %d %d %d %d xmax" #v, xmax, (x), (y), s->mb_x, s->mb_y);\
if( (y)<(ymin<<(S)) ) av_log(NULL, AV_LOG_ERROR, "%d %d %d %d %d ymin" #v, ymin, (x), (y), s->mb_x, s->mb_y);\
if( (y)>(ymax<<(S)) ) av_log(NULL, AV_LOG_ERROR, "%d %d %d %d %d ymax" #v, ymax, (x), (y), s->mb_x, s->mb_y);\

Definition at line 405 of file motion_est_template.c.

◆ LOAD_COMMON2

#define LOAD_COMMON2
Value:
uint32_t *map= c->map;\
const int qpel= flags&FLAG_QPEL;\
const int shift= 1+qpel;\

Definition at line 411 of file motion_est_template.c.

◆ SAB_CHECK_MV

#define SAB_CHECK_MV (   ax,
  ay 
)
Value:
{\
const unsigned key = ((ay)<<ME_MAP_MV_BITS) + (ax) + map_generation;\
const int index= (((ay)<<ME_MAP_SHIFT) + (ax))&(ME_MAP_SIZE-1);\
if(map[index]!=key){\
d= cmp(s, ax, ay, 0, 0, size, h, ref_index, src_index, cmpf, chroma_cmpf, flags);\
map[index]= key;\
score_map[index]= d;\
d += (mv_penalty[((ax)<<shift)-pred_x] + mv_penalty[((ay)<<shift)-pred_y])*penalty_factor;\
if(d < minima[minima_count-1].height){\
int j=0;\
\
while(d >= minima[j].height) j++;\
\
memmove(&minima [j+1], &minima [j], (minima_count - j - 1)*sizeof(Minima));\
\
minima[j].checked= 0;\
minima[j].height= d;\
minima[j].x= ax;\
minima[j].y= ay;\
\
i=-1;\
continue;\
}\
}\
}

Definition at line 653 of file motion_est_template.c.

◆ MAX_SAB_SIZE

#define MAX_SAB_SIZE   ME_MAP_SIZE

Definition at line 680 of file motion_est_template.c.

Function Documentation

◆ hpel_motion_search()

static int hpel_motion_search ( MpegEncContext *  s,
int *  mx_ptr,
int *  my_ptr,
int  dmin,
int  src_index,
int  ref_index,
int  size,
int  h 
)
static

Definition at line 50 of file motion_est_template.c.

Referenced by direct_search(), and ff_init_me().

◆ no_sub_motion_search()

static int no_sub_motion_search ( MpegEncContext *  s,
int *  mx_ptr,
int *  my_ptr,
int  dmin,
int  src_index,
int  ref_index,
int  size,
int  h 
)
static

Definition at line 155 of file motion_est_template.c.

Referenced by ff_init_me().

◆ get_mb_score()

static int get_mb_score ( MpegEncContext *  s,
int  mx,
int  my,
int  src_index,
int  ref_index,
int  size,
int  h,
int  add_rate 
)
inlinestatic

Definition at line 165 of file motion_est_template.c.

Referenced by direct_search(), estimate_motion_b(), ff_estimate_p_frame_motion(), and ff_get_mb_score().

◆ ff_get_mb_score()

int ff_get_mb_score ( MpegEncContext *  s,
int  mx,
int  my,
int  src_index,
int  ref_index,
int  size,
int  h,
int  add_rate 
)

Definition at line 192 of file motion_est_template.c.

Referenced by encode_q_branch().

◆ qpel_motion_search()

static int qpel_motion_search ( MpegEncContext *  s,
int *  mx_ptr,
int *  my_ptr,
int  dmin,
int  src_index,
int  ref_index,
int  size,
int  h 
)
static

Definition at line 207 of file motion_est_template.c.

Referenced by direct_search(), and ff_init_me().

◆ small_diamond_search()

static av_always_inline int small_diamond_search ( MpegEncContext *  s,
int *  best,
int  dmin,
int  src_index,
int  ref_index,
const int  penalty_factor,
int  size,
int  h,
int  flags 
)
static

Definition at line 416 of file motion_est_template.c.

Referenced by diamond_search().

◆ funny_diamond_search()

static int funny_diamond_search ( MpegEncContext *  s,
int *  best,
int  dmin,
int  src_index,
int  ref_index,
const int  penalty_factor,
int  size,
int  h,
int  flags 
)
static

Definition at line 457 of file motion_est_template.c.

Referenced by diamond_search().

◆ hex_search()

static int hex_search ( MpegEncContext *  s,
int *  best,
int  dmin,
int  src_index,
int  ref_index,
const int  penalty_factor,
int  size,
int  h,
int  flags,
int  dia_size 
)
static

Definition at line 499 of file motion_est_template.c.

Referenced by diamond_search(), and umh_search().

◆ l2s_dia_search()

static int l2s_dia_search ( MpegEncContext *  s,
int *  best,
int  dmin,
int  src_index,
int  ref_index,
const int  penalty_factor,
int  size,
int  h,
int  flags 
)
static

Definition at line 533 of file motion_est_template.c.

Referenced by diamond_search().

◆ umh_search()

static int umh_search ( MpegEncContext *  s,
int *  best,
int  dmin,
int  src_index,
int  ref_index,
const int  penalty_factor,
int  size,
int  h,
int  flags 
)
static

Definition at line 571 of file motion_est_template.c.

Referenced by diamond_search().

◆ full_search()

static int full_search ( MpegEncContext *  s,
int *  best,
int  dmin,
int  src_index,
int  ref_index,
const int  penalty_factor,
int  size,
int  h,
int  flags 
)
static

Definition at line 618 of file motion_est_template.c.

Referenced by diamond_search().

◆ sab_diamond_search()

static int sab_diamond_search ( MpegEncContext *  s,
int *  best,
int  dmin,
int  src_index,
int  ref_index,
const int  penalty_factor,
int  size,
int  h,
int  flags 
)
static

Definition at line 681 of file motion_est_template.c.

Referenced by diamond_search().

◆ var_diamond_search()

static int var_diamond_search ( MpegEncContext *  s,
int *  best,
int  dmin,
int  src_index,
int  ref_index,
const int  penalty_factor,
int  size,
int  h,
int  flags 
)
static

Definition at line 771 of file motion_est_template.c.

Referenced by diamond_search().

◆ diamond_search()

static av_always_inline int diamond_search ( MpegEncContext *  s,
int *  best,
int  dmin,
int  src_index,
int  ref_index,
const int  penalty_factor,
int  size,
int  h,
int  flags 
)
static

Definition at line 832 of file motion_est_template.c.

Referenced by epzs_motion_search2(), and epzs_motion_search_internal().

◆ epzs_motion_search_internal()

static av_always_inline int epzs_motion_search_internal ( MpegEncContext *  s,
int *  mx_ptr,
int *  my_ptr,
int  P[10][2],
int  src_index,
int  ref_index,
int16_t(*)  last_mv[2],
int  ref_mv_scale,
int  flags,
int  size,
int  h 
)
static
Parameters
Pa list of candidate mvs to check before starting the iterative search. If one of the candidates is close to the optimal mv, then it takes fewer iterations. And it increases the chance that we find the optimal mv.

< x and y coordinates of the best motion vector. i.e. the difference between the position of the block currently being encoded and the position of the block chosen to predict it from.

< the score (cmp + penalty) of any given mv

< the best value of d, i.e. the score corresponding to the mv stored in best[].

Definition at line 860 of file motion_est_template.c.

Referenced by ff_epzs_motion_search().

◆ ff_epzs_motion_search()

int ff_epzs_motion_search ( MpegEncContext *  s,
int *  mx_ptr,
int *  my_ptr,
int  P[10][2],
int  src_index,
int  ref_index,
int16_t(*)  last_mv[2],
int  ref_mv_scale,
int  size,
int  h 
)

Definition at line 977 of file motion_est_template.c.

Referenced by direct_search(), encode_q_branch(), estimate_motion_b(), ff_estimate_p_frame_motion(), and ff_pre_estimate_p_frame_motion().

◆ epzs_motion_search2()

static int epzs_motion_search2 ( MpegEncContext *  s,
int *  mx_ptr,
int *  my_ptr,
int  P[10][2],
int  src_index,
int  ref_index,
int16_t(*)  last_mv[2],
int  ref_mv_scale,
const int  size 
)
static

Definition at line 993 of file motion_est_template.c.

Referenced by h263_mv4_search(), and interlaced_search().

av_unused
#define av_unused
Definition: attributes.h:131
index
fg index
Definition: ffmpeg_filter.c:167
cmp_qpel
static int cmp_qpel(MpegEncContext *s, const int x, const int y, const int subx, const int suby, const int size, const int h, int ref_index, int src_index, me_cmp_func cmp_func, me_cmp_func chroma_cmp_func, const int flags)
Definition: motion_est.c:285
FFMAX
#define FFMAX(a, b)
Definition: macros.h:47
S
#define S(s, c, i)
Definition: flacdsp_template.c:46
mv_penalty
static uint8_t mv_penalty[MAX_FCODE+1][MAX_DMV *2+1]
Table of number of bits a motion vector component needs.
Definition: ituh263enc.c:48
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:180
cmp_hpel
static int cmp_hpel(MpegEncContext *s, const int x, const int y, const int subx, const int suby, const int size, const int h, int ref_index, int src_index, me_cmp_func cmp_func, me_cmp_func chroma_cmp_func, const int flags)
Definition: motion_est.c:275
s
#define s(width, name)
Definition: cbs_vp9.c:257
Minima
Definition: motion_est.c:66
key
const char * key
Definition: hwcontext_opencl.c:168
cmp
static av_always_inline int cmp(MpegEncContext *s, const int x, const int y, const int subx, const int suby, const int size, const int h, int ref_index, int src_index, me_cmp_func cmp_func, me_cmp_func chroma_cmp_func, const int flags)
compares a block (either a full macroblock or a partition thereof) against a proposed motion-compensa...
Definition: motion_est.c:260
NULL
#define NULL
Definition: coverity.c:32
ME_MAP_MV_BITS
#define ME_MAP_MV_BITS
Definition: motion_est.c:48
ME_MAP_SIZE
#define ME_MAP_SIZE
Definition: motion_est.h:38
c
Undefined Behavior In the C some operations are like signed integer dereferencing freed accessing outside allocated Undefined Behavior must not occur in a C it is not safe even if the output of undefined operations is unused The unsafety may seem nit picking but Optimizing compilers have in fact optimized code on the assumption that no undefined Behavior occurs Optimizing code based on wrong assumptions can and has in some cases lead to effects beyond the output of computations The signed integer overflow problem in speed critical code Code which is highly optimized and works with signed integers sometimes has the problem that often the output of the computation does not c
Definition: undefined.txt:32
size
int size
Definition: twinvq_data.h:10344
height
#define height
ME_MAP_SHIFT
#define ME_MAP_SHIFT
Definition: motion_est.c:47
FFMIN
#define FFMIN(a, b)
Definition: macros.h:49
FLAG_QPEL
#define FLAG_QPEL
Definition: motion_est.c:79
shift
static int shift(int a, int b)
Definition: sonic.c:83
map
const VDPAUPixFmtMap * map
Definition: hwcontext_vdpau.c:71
d
d
Definition: ffmpeg_filter.c:153
flags
#define flags(name, subs,...)
Definition: cbs_av1.c:561
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:28
h
h
Definition: vp9dsp_template.c:2038
int
int
Definition: ffmpeg_filter.c:153
Generated on Wed Aug 24 2022 21:38:40 for FFmpeg by   doxygen 1.8.17