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ffmpeg/libavcodec/motion_est.c

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/*
* Motion estimation
* Copyright (c) 2000,2001 Gerard Lantau.
*
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* new Motion Estimation (X1/EPZS) by Michael Niedermayer <michaelni@gmx.at>
*/
#include <stdlib.h>
#include <stdio.h>
#include "avcodec.h"
#include "dsputil.h"
#include "mpegvideo.h"
#define ABS(a) ((a)>0 ? (a) : -(a))
#define MAX(a,b) ((a) > (b) ? (a) : (b))
#define INTER_BIAS 257
static int halfpel_motion_search(MpegEncContext * s,
int *mx_ptr, int *my_ptr, int dmin,
int xmin, int ymin, int xmax, int ymax,
int pred_x, int pred_y, uint8_t *ref_picture);
static int pix_sum(UINT8 * pix, int line_size)
{
int s, i, j;
s = 0;
for (i = 0; i < 16; i++) {
for (j = 0; j < 16; j += 8) {
s += pix[0];
s += pix[1];
s += pix[2];
s += pix[3];
s += pix[4];
s += pix[5];
s += pix[6];
s += pix[7];
pix += 8;
}
pix += line_size - 16;
}
return s;
}
static int pix_dev(UINT8 * pix, int line_size, int mean)
{
int s, i, j;
s = 0;
for (i = 0; i < 16; i++) {
for (j = 0; j < 16; j += 8) {
s += ABS(pix[0]-mean);
s += ABS(pix[1]-mean);
s += ABS(pix[2]-mean);
s += ABS(pix[3]-mean);
s += ABS(pix[4]-mean);
s += ABS(pix[5]-mean);
s += ABS(pix[6]-mean);
s += ABS(pix[7]-mean);
pix += 8;
}
pix += line_size - 16;
}
return s;
}
static int pix_norm1(UINT8 * pix, int line_size)
{
int s, i, j;
UINT32 *sq = squareTbl + 256;
s = 0;
for (i = 0; i < 16; i++) {
for (j = 0; j < 16; j += 8) {
s += sq[pix[0]];
s += sq[pix[1]];
s += sq[pix[2]];
s += sq[pix[3]];
s += sq[pix[4]];
s += sq[pix[5]];
s += sq[pix[6]];
s += sq[pix[7]];
pix += 8;
}
pix += line_size - 16;
}
return s;
}
static int pix_norm(UINT8 * pix1, UINT8 * pix2, int line_size)
{
int s, i, j;
UINT32 *sq = squareTbl + 256;
s = 0;
for (i = 0; i < 16; i++) {
for (j = 0; j < 16; j += 8) {
s += sq[pix1[0] - pix2[0]];
s += sq[pix1[1] - pix2[1]];
s += sq[pix1[2] - pix2[2]];
s += sq[pix1[3] - pix2[3]];
s += sq[pix1[4] - pix2[4]];
s += sq[pix1[5] - pix2[5]];
s += sq[pix1[6] - pix2[6]];
s += sq[pix1[7] - pix2[7]];
pix1 += 8;
pix2 += 8;
}
pix1 += line_size - 16;
pix2 += line_size - 16;
}
return s;
}
static void no_motion_search(MpegEncContext * s,
int *mx_ptr, int *my_ptr)
{
*mx_ptr = 16 * s->mb_x;
*my_ptr = 16 * s->mb_y;
}
static int full_motion_search(MpegEncContext * s,
int *mx_ptr, int *my_ptr, int range,
int xmin, int ymin, int xmax, int ymax, uint8_t *ref_picture)
{
int x1, y1, x2, y2, xx, yy, x, y;
int mx, my, dmin, d;
UINT8 *pix;
xx = 16 * s->mb_x;
yy = 16 * s->mb_y;
x1 = xx - range + 1; /* we loose one pixel to avoid boundary pb with half pixel pred */
if (x1 < xmin)
x1 = xmin;
x2 = xx + range - 1;
if (x2 > xmax)
x2 = xmax;
y1 = yy - range + 1;
if (y1 < ymin)
y1 = ymin;
y2 = yy + range - 1;
if (y2 > ymax)
y2 = ymax;
pix = s->new_picture[0] + (yy * s->linesize) + xx;
dmin = 0x7fffffff;
mx = 0;
my = 0;
for (y = y1; y <= y2; y++) {
for (x = x1; x <= x2; x++) {
d = pix_abs16x16(pix, ref_picture + (y * s->linesize) + x,
s->linesize);
if (d < dmin ||
(d == dmin &&
(abs(x - xx) + abs(y - yy)) <
(abs(mx - xx) + abs(my - yy)))) {
dmin = d;
mx = x;
my = y;
}
}
}
*mx_ptr = mx;
*my_ptr = my;
#if 0
if (*mx_ptr < -(2 * range) || *mx_ptr >= (2 * range) ||
*my_ptr < -(2 * range) || *my_ptr >= (2 * range)) {
fprintf(stderr, "error %d %d\n", *mx_ptr, *my_ptr);
}
#endif
return dmin;
}
static int log_motion_search(MpegEncContext * s,
int *mx_ptr, int *my_ptr, int range,
int xmin, int ymin, int xmax, int ymax, uint8_t *ref_picture)
{
int x1, y1, x2, y2, xx, yy, x, y;
int mx, my, dmin, d;
UINT8 *pix;
xx = s->mb_x << 4;
yy = s->mb_y << 4;
/* Left limit */
x1 = xx - range;
if (x1 < xmin)
x1 = xmin;
/* Right limit */
x2 = xx + range;
if (x2 > xmax)
x2 = xmax;
/* Upper limit */
y1 = yy - range;
if (y1 < ymin)
y1 = ymin;
/* Lower limit */
y2 = yy + range;
if (y2 > ymax)
y2 = ymax;
pix = s->new_picture[0] + (yy * s->linesize) + xx;
dmin = 0x7fffffff;
mx = 0;
my = 0;
do {
for (y = y1; y <= y2; y += range) {
for (x = x1; x <= x2; x += range) {
d = pix_abs16x16(pix, ref_picture + (y * s->linesize) + x, s->linesize);
if (d < dmin || (d == dmin && (abs(x - xx) + abs(y - yy)) < (abs(mx - xx) + abs(my - yy)))) {
dmin = d;
mx = x;
my = y;
}
}
}
range = range >> 1;
x1 = mx - range;
if (x1 < xmin)
x1 = xmin;
x2 = mx + range;
if (x2 > xmax)
x2 = xmax;
y1 = my - range;
if (y1 < ymin)
y1 = ymin;
y2 = my + range;
if (y2 > ymax)
y2 = ymax;
} while (range >= 1);
#ifdef DEBUG
fprintf(stderr, "log - MX: %d\tMY: %d\n", mx, my);
#endif
*mx_ptr = mx;
*my_ptr = my;
return dmin;
}
static int phods_motion_search(MpegEncContext * s,
int *mx_ptr, int *my_ptr, int range,
int xmin, int ymin, int xmax, int ymax, uint8_t *ref_picture)
{
int x1, y1, x2, y2, xx, yy, x, y, lastx, d;
int mx, my, dminx, dminy;
UINT8 *pix;
xx = s->mb_x << 4;
yy = s->mb_y << 4;
/* Left limit */
x1 = xx - range;
if (x1 < xmin)
x1 = xmin;
/* Right limit */
x2 = xx + range;
if (x2 > xmax)
x2 = xmax;
/* Upper limit */
y1 = yy - range;
if (y1 < ymin)
y1 = ymin;
/* Lower limit */
y2 = yy + range;
if (y2 > ymax)
y2 = ymax;
pix = s->new_picture[0] + (yy * s->linesize) + xx;
mx = 0;
my = 0;
x = xx;
y = yy;
do {
dminx = 0x7fffffff;
dminy = 0x7fffffff;
lastx = x;
for (x = x1; x <= x2; x += range) {
d = pix_abs16x16(pix, ref_picture + (y * s->linesize) + x, s->linesize);
if (d < dminx || (d == dminx && (abs(x - xx) + abs(y - yy)) < (abs(mx - xx) + abs(my - yy)))) {
dminx = d;
mx = x;
}
}
x = lastx;
for (y = y1; y <= y2; y += range) {
d = pix_abs16x16(pix, ref_picture + (y * s->linesize) + x, s->linesize);
if (d < dminy || (d == dminy && (abs(x - xx) + abs(y - yy)) < (abs(mx - xx) + abs(my - yy)))) {
dminy = d;
my = y;
}
}
range = range >> 1;
x = mx;
y = my;
x1 = mx - range;
if (x1 < xmin)
x1 = xmin;
x2 = mx + range;
if (x2 > xmax)
x2 = xmax;
y1 = my - range;
if (y1 < ymin)
y1 = ymin;
y2 = my + range;
if (y2 > ymax)
y2 = ymax;
} while (range >= 1);
#ifdef DEBUG
fprintf(stderr, "phods - MX: %d\tMY: %d\n", mx, my);
#endif
/* half pixel search */
*mx_ptr = mx;
*my_ptr = my;
return dminy;
}
#define Z_THRESHOLD 256
#define CHECK_MV(x,y)\
{\
d = pix_abs16x16(new_pic, old_pic + (x) + (y)*pic_stride, pic_stride);\
d += (mv_penalty[((x)<<shift)-pred_x] + mv_penalty[((y)<<shift)-pred_y])*quant;\
if(d<dmin){\
best[0]=x;\
best[1]=y;\
dmin=d;\
}\
}
#define CHECK_MV_DIR(x,y,new_dir)\
{\
d = pix_abs16x16(new_pic, old_pic + (x) + (y)*pic_stride, pic_stride);\
d += (mv_penalty[((x)<<shift)-pred_x] + mv_penalty[((y)<<shift)-pred_y])*quant;\
if(d<dmin){\
best[0]=x;\
best[1]=y;\
dmin=d;\
next_dir= new_dir;\
}\
}
#define CHECK_MV4(x,y)\
{\
d = pix_abs8x8(new_pic, old_pic + (x) + (y)*pic_stride, pic_stride);\
d += (mv_penalty[((x)<<shift)-pred_x] + mv_penalty[((y)<<shift)-pred_y])*quant;\
if(d<dmin){\
best[0]=x;\
best[1]=y;\
dmin=d;\
}\
}
#define CHECK_MV4_DIR(x,y,new_dir)\
{\
d = pix_abs8x8(new_pic, old_pic + (x) + (y)*pic_stride, pic_stride);\
d += (mv_penalty[((x)<<shift)-pred_x] + mv_penalty[((y)<<shift)-pred_y])*quant;\
if(d<dmin){\
best[0]=x;\
best[1]=y;\
dmin=d;\
next_dir= new_dir;\
}\
}
#define check(x,y,S,v)\
if( (x)<(xmin<<(S)) ) printf("%d %d %d %d xmin" #v, (x), (y), s->mb_x, s->mb_y);\
if( (x)>(xmax<<(S)) ) printf("%d %d %d %d xmax" #v, (x), (y), s->mb_x, s->mb_y);\
if( (y)<(ymin<<(S)) ) printf("%d %d %d %d ymin" #v, (x), (y), s->mb_x, s->mb_y);\
if( (y)>(ymax<<(S)) ) printf("%d %d %d %d ymax" #v, (x), (y), s->mb_x, s->mb_y);\
static inline int small_diamond_search(MpegEncContext * s, int *best, int dmin,
UINT8 *new_pic, UINT8 *old_pic, int pic_stride,
int pred_x, int pred_y, UINT16 *mv_penalty, int quant,
int xmin, int ymin, int xmax, int ymax, int shift)
{
int next_dir=-1;
for(;;){
int d;
const int dir= next_dir;
const int x= best[0];
const int y= best[1];
next_dir=-1;
//printf("%d", dir);
if(dir!=2 && x>xmin) CHECK_MV_DIR(x-1, y , 0)
if(dir!=3 && y>ymin) CHECK_MV_DIR(x , y-1, 1)
if(dir!=0 && x<xmax) CHECK_MV_DIR(x+1, y , 2)
if(dir!=1 && y<ymax) CHECK_MV_DIR(x , y+1, 3)
if(next_dir==-1){
return dmin;
}
}
/* for(;;){
int d;
const int x= best[0];
const int y= best[1];
const int last_min=dmin;
if(x>xmin) CHECK_MV(x-1, y )
if(y>xmin) CHECK_MV(x , y-1)
if(x<xmax) CHECK_MV(x+1, y )
if(y<xmax) CHECK_MV(x , y+1)
if(x>xmin && y>ymin) CHECK_MV(x-1, y-1)
if(x>xmin && y<ymax) CHECK_MV(x-1, y+1)
if(x<xmax && y>ymin) CHECK_MV(x+1, y-1)
if(x<xmax && y<ymax) CHECK_MV(x+1, y+1)
if(x-1>xmin) CHECK_MV(x-2, y )
if(y-1>xmin) CHECK_MV(x , y-2)
if(x+1<xmax) CHECK_MV(x+2, y )
if(y+1<xmax) CHECK_MV(x , y+2)
if(x-1>xmin && y-1>ymin) CHECK_MV(x-2, y-2)
if(x-1>xmin && y+1<ymax) CHECK_MV(x-2, y+2)
if(x+1<xmax && y-1>ymin) CHECK_MV(x+2, y-2)
if(x+1<xmax && y+1<ymax) CHECK_MV(x+2, y+2)
if(dmin==last_min) return dmin;
}
*/
}
static inline int small_diamond_search4MV(MpegEncContext * s, int *best, int dmin,
UINT8 *new_pic, UINT8 *old_pic, int pic_stride,
int pred_x, int pred_y, UINT16 *mv_penalty, int quant,
int xmin, int ymin, int xmax, int ymax, int shift)
{
int next_dir=-1;
for(;;){
int d;
const int dir= next_dir;
const int x= best[0];
const int y= best[1];
next_dir=-1;
//printf("%d", dir);
if(dir!=2 && x>xmin) CHECK_MV4_DIR(x-1, y , 0)
if(dir!=3 && y>ymin) CHECK_MV4_DIR(x , y-1, 1)
if(dir!=0 && x<xmax) CHECK_MV4_DIR(x+1, y , 2)
if(dir!=1 && y<ymax) CHECK_MV4_DIR(x , y+1, 3)
if(next_dir==-1){
return dmin;
}
}
}
static inline int snake_search(MpegEncContext * s, int *best, int dmin,
UINT8 *new_pic, UINT8 *old_pic, int pic_stride,
int pred_x, int pred_y, UINT16 *mv_penalty, int quant,
int xmin, int ymin, int xmax, int ymax, int shift)
{
int dir=0;
int c=1;
static int x_dir[8]= {1,1,0,-1,-1,-1, 0, 1};
static int y_dir[8]= {0,1,1, 1, 0,-1,-1,-1};
int fails=0;
int last_d[2]={dmin, dmin};
/*static int good=0;
static int bad=0;
static int point=0;
point++;
if(256*256*256*64%point==0)
{
printf("%d %d %d\n", good, bad, point);
}*/
for(;;){
int x= best[0];
int y= best[1];
int d;
x+=x_dir[dir];
y+=y_dir[dir];
if(x>=xmin && x<=xmax && y>=ymin && y<=ymax){
d = pix_abs16x16(new_pic, old_pic + (x) + (y)*pic_stride, pic_stride);
d += (mv_penalty[((x)<<shift)-pred_x] + mv_penalty[((y)<<shift)-pred_y])*quant;
}else{
d = dmin + 10000; //FIXME smarter boundary handling
}
if(d<dmin){
best[0]=x;
best[1]=y;
dmin=d;
if(last_d[1] - last_d[0] > last_d[0] - d) c= -c;
dir+=c;
fails=0;
//good++;
last_d[1]=last_d[0];
last_d[0]=d;
}else{
//bad++;
if(fails){
if(fails>=3) return dmin;
}else{
c= -c;
}
dir+=c*2;
fails++;
}
dir&=7;
}
}
static int epzs_motion_search(MpegEncContext * s,
int *mx_ptr, int *my_ptr,
int P[5][2], int pred_x, int pred_y,
int xmin, int ymin, int xmax, int ymax, uint8_t * ref_picture)
{
int best[2]={0, 0};
int d, dmin;
UINT8 *new_pic, *old_pic;
const int pic_stride= s->linesize;
const int pic_xy= (s->mb_y*pic_stride + s->mb_x)*16;
UINT16 *mv_penalty= s->mv_penalty[s->f_code] + MAX_MV; // f_code of the prev frame
int quant= s->qscale; // qscale of the prev frame
const int shift= 1+s->quarter_sample;
new_pic = s->new_picture[0] + pic_xy;
old_pic = ref_picture + pic_xy;
dmin = pix_abs16x16(new_pic, old_pic, pic_stride);
if(dmin<Z_THRESHOLD){
*mx_ptr= 0;
*my_ptr= 0;
//printf("Z");
return dmin;
}
/* first line */
if ((s->mb_y == 0 || s->first_slice_line || s->first_gob_line)) {
CHECK_MV(P[1][0]>>shift, P[1][1]>>shift)
}else{
CHECK_MV(P[4][0]>>shift, P[4][1]>>shift)
if(dmin<Z_THRESHOLD){
*mx_ptr= P[4][0]>>shift;
*my_ptr= P[4][1]>>shift;
//printf("M\n");
return dmin;
}
CHECK_MV(P[1][0]>>shift, P[1][1]>>shift)
CHECK_MV(P[2][0]>>shift, P[2][1]>>shift)
CHECK_MV(P[3][0]>>shift, P[3][1]>>shift)
}
CHECK_MV(P[0][0]>>shift, P[0][1]>>shift)
//check(best[0],best[1],0, b0)
if(s->me_method==ME_EPZS)
dmin= small_diamond_search(s, best, dmin, new_pic, old_pic, pic_stride,
pred_x, pred_y, mv_penalty, quant, xmin, ymin, xmax, ymax, shift);
else
dmin= snake_search(s, best, dmin, new_pic, old_pic, pic_stride,
pred_x, pred_y, mv_penalty, quant, xmin, ymin, xmax, ymax, shift);
//check(best[0],best[1],0, b1)
*mx_ptr= best[0];
*my_ptr= best[1];
// printf("%d %d %d \n", best[0], best[1], dmin);
return dmin;
}
static int epzs_motion_search4(MpegEncContext * s, int block,
int *mx_ptr, int *my_ptr,
int P[6][2], int pred_x, int pred_y,
int xmin, int ymin, int xmax, int ymax, uint8_t *ref_picture)
{
int best[2]={0, 0};
int d, dmin;
UINT8 *new_pic, *old_pic;
const int pic_stride= s->linesize;
const int pic_xy= ((s->mb_y*2 + (block>>1))*pic_stride + s->mb_x*2 + (block&1))*8;
UINT16 *mv_penalty= s->mv_penalty[s->f_code] + MAX_MV; // f_code of the prev frame
int quant= s->qscale; // qscale of the prev frame
const int shift= 1+s->quarter_sample;
new_pic = s->new_picture[0] + pic_xy;
old_pic = ref_picture + pic_xy;
dmin = pix_abs8x8(new_pic, old_pic, pic_stride);
/* first line */
if ((s->mb_y == 0 || s->first_slice_line || s->first_gob_line) && block<2) {
CHECK_MV4(P[1][0]>>shift, P[1][1]>>shift)
}else{
CHECK_MV4(P[4][0]>>shift, P[4][1]>>shift)
if(dmin<Z_THRESHOLD){
*mx_ptr= P[4][0]>>shift;
*my_ptr= P[4][1]>>shift;
//printf("M\n");
return dmin;
}
CHECK_MV4(P[1][0]>>shift, P[1][1]>>shift)
CHECK_MV4(P[2][0]>>shift, P[2][1]>>shift)
CHECK_MV4(P[3][0]>>shift, P[3][1]>>shift)
}
CHECK_MV4(P[0][0]>>shift, P[0][1]>>shift)
CHECK_MV4(P[5][0]>>shift, P[5][1]>>shift)
//check(best[0],best[1],0, b0)
dmin= small_diamond_search4MV(s, best, dmin, new_pic, old_pic, pic_stride,
pred_x, pred_y, mv_penalty, quant, xmin, ymin, xmax, ymax, shift);
//check(best[0],best[1],0, b1)
*mx_ptr= best[0];
*my_ptr= best[1];
// printf("%d %d %d \n", best[0], best[1], dmin);
return dmin;
}
#define CHECK_HALF_MV(suffix, x, y) \
d= pix_abs16x16_ ## suffix(pix, ptr+((x)>>1), s->linesize);\
d += (mv_penalty[pen_x + x] + mv_penalty[pen_y + y])*quant;\
if(d<dminh){\
dminh= d;\
mx= mx1 + x;\
my= my1 + y;\
}
#define CHECK_HALF_MV4(suffix, x, y) \
d= pix_abs8x8_ ## suffix(pix, ptr+((x)>>1), s->linesize);\
d += (mv_penalty[pen_x + x] + mv_penalty[pen_y + y])*quant;\
if(d<dminh){\
dminh= d;\
mx= mx1 + x;\
my= my1 + y;\
}
/* The idea would be to make half pel ME after Inter/Intra decision to
save time. */
static inline int halfpel_motion_search(MpegEncContext * s,
int *mx_ptr, int *my_ptr, int dmin,
int xmin, int ymin, int xmax, int ymax,
int pred_x, int pred_y, uint8_t *ref_picture)
{
UINT16 *mv_penalty= s->mv_penalty[s->f_code] + MAX_MV; // f_code of the prev frame
const int quant= s->qscale;
int pen_x, pen_y;
int mx, my, mx1, my1, d, xx, yy, dminh;
UINT8 *pix, *ptr;
mx = *mx_ptr;
my = *my_ptr;
ptr = ref_picture + (my * s->linesize) + mx;
xx = 16 * s->mb_x;
yy = 16 * s->mb_y;
pix = s->new_picture[0] + (yy * s->linesize) + xx;
dminh = dmin;
if (mx > xmin && mx < xmax &&
my > ymin && my < ymax) {
mx= mx1= 2*(mx - xx);
my= my1= 2*(my - yy);
if(dmin < Z_THRESHOLD && mx==0 && my==0){
*mx_ptr = 0;
*my_ptr = 0;
return dmin;
}
pen_x= pred_x + mx;
pen_y= pred_y + my;
ptr-= s->linesize;
CHECK_HALF_MV(xy2, -1, -1)
CHECK_HALF_MV(y2 , 0, -1)
CHECK_HALF_MV(xy2, +1, -1)
ptr+= s->linesize;
CHECK_HALF_MV(x2 , -1, 0)
CHECK_HALF_MV(x2 , +1, 0)
CHECK_HALF_MV(xy2, -1, +1)
CHECK_HALF_MV(y2 , 0, +1)
CHECK_HALF_MV(xy2, +1, +1)
}else{
mx= 2*(mx - xx);
my= 2*(my - yy);
}
*mx_ptr = mx;
*my_ptr = my;
return dminh;
}
static inline void halfpel_motion_search4(MpegEncContext * s,
int *mx_ptr, int *my_ptr, int dmin,
int xmin, int ymin, int xmax, int ymax,
int pred_x, int pred_y, int block_x, int block_y,
uint8_t *ref_picture)
{
UINT16 *mv_penalty= s->mv_penalty[s->f_code] + MAX_MV; // f_code of the prev frame
const int quant= s->qscale;
int pen_x, pen_y;
int mx, my, mx1, my1, d, xx, yy, dminh;
UINT8 *pix, *ptr;
xx = 8 * block_x;
yy = 8 * block_y;
pix = s->new_picture[0] + (yy * s->linesize) + xx;
mx = *mx_ptr;
my = *my_ptr;
ptr = ref_picture + ((yy+my) * s->linesize) + xx + mx;
dminh = dmin;
if (mx > xmin && mx < xmax &&
my > ymin && my < ymax) {
mx= mx1= 2*mx;
my= my1= 2*my;
if(dmin < Z_THRESHOLD && mx==0 && my==0){
*mx_ptr = 0;
*my_ptr = 0;
return;
}
pen_x= pred_x + mx;
pen_y= pred_y + my;
ptr-= s->linesize;
CHECK_HALF_MV4(xy2, -1, -1)
CHECK_HALF_MV4(y2 , 0, -1)
CHECK_HALF_MV4(xy2, +1, -1)
ptr+= s->linesize;
CHECK_HALF_MV4(x2 , -1, 0)
CHECK_HALF_MV4(x2 , +1, 0)
CHECK_HALF_MV4(xy2, -1, +1)
CHECK_HALF_MV4(y2 , 0, +1)
CHECK_HALF_MV4(xy2, +1, +1)
}else{
mx*=2;
my*=2;
}
*mx_ptr = mx;
*my_ptr = my;
}
static inline void set_p_mv_tables(MpegEncContext * s, int mx, int my)
{
const int xy= s->mb_x + 1 + (s->mb_y + 1)*(s->mb_width + 2);
s->p_mv_table[xy][0] = mx;
s->p_mv_table[xy][1] = my;
/* has allready been set to the 4 MV if 4MV is done */
if(!(s->flags&CODEC_FLAG_4MV)){
int mot_xy= s->block_index[0];
s->motion_val[mot_xy ][0]= mx;
s->motion_val[mot_xy ][1]= my;
s->motion_val[mot_xy+1][0]= mx;
s->motion_val[mot_xy+1][1]= my;
mot_xy += s->block_wrap[0];
s->motion_val[mot_xy ][0]= mx;
s->motion_val[mot_xy ][1]= my;
s->motion_val[mot_xy+1][0]= mx;
s->motion_val[mot_xy+1][1]= my;
}
}
static inline void get_limits(MpegEncContext *s, int *range, int *xmin, int *ymin, int *xmax, int *ymax, int f_code)
{
*range = 8 * (1 << (f_code - 1));
/* XXX: temporary kludge to avoid overflow for msmpeg4 */
if (s->out_format == FMT_H263 && !s->h263_msmpeg4)
*range *= 2;
if (s->unrestricted_mv) {
*xmin = -16;
*ymin = -16;
if (s->h263_plus)
*range *= 2;
if(s->avctx==NULL || s->avctx->codec->id!=CODEC_ID_MPEG4){
*xmax = s->mb_width*16;
*ymax = s->mb_height*16;
}else {
/* XXX: dunno if this is correct but ffmpeg4 decoder wont like it otherwise
(cuz the drawn edge isnt large enough))*/
*xmax = s->width;
*ymax = s->height;
}
} else {
*xmin = 0;
*ymin = 0;
*xmax = s->mb_width*16 - 16;
*ymax = s->mb_height*16 - 16;
}
}
void ff_estimate_p_frame_motion(MpegEncContext * s,
int mb_x, int mb_y)
{
UINT8 *pix, *ppix;
int sum, varc, vard, mx, my, range, dmin, xx, yy;
int xmin, ymin, xmax, ymax;
int rel_xmin, rel_ymin, rel_xmax, rel_ymax;
int pred_x=0, pred_y=0;
int P[6][2];
const int shift= 1+s->quarter_sample;
int mb_type=0;
uint8_t *ref_picture= s->last_picture[0];
get_limits(s, &range, &xmin, &ymin, &xmax, &ymax, s->f_code);
switch(s->me_method) {
case ME_ZERO:
default:
no_motion_search(s, &mx, &my);
dmin = 0;
break;
case ME_FULL:
dmin = full_motion_search(s, &mx, &my, range, xmin, ymin, xmax, ymax, ref_picture);
break;
case ME_LOG:
dmin = log_motion_search(s, &mx, &my, range / 2, xmin, ymin, xmax, ymax, ref_picture);
break;
case ME_PHODS:
dmin = phods_motion_search(s, &mx, &my, range / 2, xmin, ymin, xmax, ymax, ref_picture);
break;
case ME_X1:
case ME_EPZS:
{
const int mot_stride = s->block_wrap[0];
const int mot_xy = s->block_index[0];
rel_xmin= xmin - mb_x*16;
rel_xmax= xmax - mb_x*16;
rel_ymin= ymin - mb_y*16;
rel_ymax= ymax - mb_y*16;
P[0][0] = s->motion_val[mot_xy ][0];
P[0][1] = s->motion_val[mot_xy ][1];
P[1][0] = s->motion_val[mot_xy - 1][0];
P[1][1] = s->motion_val[mot_xy - 1][1];
if(P[1][0] > (rel_xmax<<shift)) P[1][0]= (rel_xmax<<shift);
/* special case for first line */
if ((mb_y == 0 || s->first_slice_line || s->first_gob_line)) {
P[4][0] = P[1][0];
P[4][1] = P[1][1];
} else {
P[2][0] = s->motion_val[mot_xy - mot_stride ][0];
P[2][1] = s->motion_val[mot_xy - mot_stride ][1];
P[3][0] = s->motion_val[mot_xy - mot_stride + 2 ][0];
P[3][1] = s->motion_val[mot_xy - mot_stride + 2 ][1];
if(P[2][1] > (rel_ymax<<shift)) P[2][1]= (rel_ymax<<shift);
if(P[3][0] < (rel_xmin<<shift)) P[3][0]= (rel_xmin<<shift);
if(P[3][1] > (rel_ymax<<shift)) P[3][1]= (rel_ymax<<shift);
P[4][0]= mid_pred(P[1][0], P[2][0], P[3][0]);
P[4][1]= mid_pred(P[1][1], P[2][1], P[3][1]);
}
if(s->out_format == FMT_H263){
pred_x = P[4][0];
pred_y = P[4][1];
}else { /* mpeg1 at least */
pred_x= P[1][0];
pred_y= P[1][1];
}
}
dmin = epzs_motion_search(s, &mx, &my, P, pred_x, pred_y, rel_xmin, rel_ymin, rel_xmax, rel_ymax, ref_picture);
mx+= mb_x*16;
my+= mb_y*16;
break;
}
if(s->flags&CODEC_FLAG_4MV){
int block;
mb_type|= MB_TYPE_INTER4V;
for(block=0; block<4; block++){
int mx4, my4;
int pred_x4, pred_y4;
int dmin4;
static const int off[4]= {2, 1, 1, -1};
const int mot_stride = s->block_wrap[0];
const int mot_xy = s->block_index[block];
const int block_x= mb_x*2 + (block&1);
const int block_y= mb_y*2 + (block>>1);
const int rel_xmin4= xmin - block_x*8;
const int rel_xmax4= xmax - block_x*8 + 8;
const int rel_ymin4= ymin - block_y*8;
const int rel_ymax4= ymax - block_y*8 + 8;
P[0][0] = s->motion_val[mot_xy ][0];
P[0][1] = s->motion_val[mot_xy ][1];
P[1][0] = s->motion_val[mot_xy - 1][0];
P[1][1] = s->motion_val[mot_xy - 1][1];
if(P[1][0] > (rel_xmax4<<shift)) P[1][0]= (rel_xmax4<<shift);
/* special case for first line */
if ((mb_y == 0 || s->first_slice_line || s->first_gob_line) && block<2) {
P[4][0] = P[1][0];
P[4][1] = P[1][1];
} else {
P[2][0] = s->motion_val[mot_xy - mot_stride ][0];
P[2][1] = s->motion_val[mot_xy - mot_stride ][1];
P[3][0] = s->motion_val[mot_xy - mot_stride + off[block]][0];
P[3][1] = s->motion_val[mot_xy - mot_stride + off[block]][1];
if(P[2][1] > (rel_ymax4<<shift)) P[2][1]= (rel_ymax4<<shift);
if(P[3][0] < (rel_xmin4<<shift)) P[3][0]= (rel_xmin4<<shift);
if(P[3][0] > (rel_xmax4<<shift)) P[3][0]= (rel_xmax4<<shift);
if(P[3][1] > (rel_ymax4<<shift)) P[3][1]= (rel_ymax4<<shift);
P[4][0]= mid_pred(P[1][0], P[2][0], P[3][0]);
P[4][1]= mid_pred(P[1][1], P[2][1], P[3][1]);
}
if(s->out_format == FMT_H263){
pred_x4 = P[4][0];
pred_y4 = P[4][1];
}else { /* mpeg1 at least */
pred_x4= P[1][0];
pred_y4= P[1][1];
}
P[5][0]= mx - mb_x*16;
P[5][1]= my - mb_y*16;
dmin4 = epzs_motion_search4(s, block, &mx4, &my4, P, pred_x4, pred_y4, rel_xmin4, rel_ymin4, rel_xmax4, rel_ymax4, ref_picture);
halfpel_motion_search4(s, &mx4, &my4, dmin4, rel_xmin4, rel_ymin4, rel_xmax4, rel_ymax4,
pred_x4, pred_y4, block_x, block_y, ref_picture);
s->motion_val[ s->block_index[block] ][0]= mx4;
s->motion_val[ s->block_index[block] ][1]= my4;
}
}
/* intra / predictive decision */
xx = mb_x * 16;
yy = mb_y * 16;
pix = s->new_picture[0] + (yy * s->linesize) + xx;
/* At this point (mx,my) are full-pell and the absolute displacement */
ppix = ref_picture + (my * s->linesize) + mx;
sum = pix_sum(pix, s->linesize);
#if 0
varc = pix_dev(pix, s->linesize, (sum+128)>>8) + INTER_BIAS;
vard = pix_abs16x16(pix, ppix, s->linesize);
#else
sum= (sum+8)>>4;
varc = ((pix_norm1(pix, s->linesize) - sum*sum + 128 + 500)>>8);
vard = (pix_norm(pix, ppix, s->linesize)+128)>>8;
#endif
s->mb_var[s->mb_width * mb_y + mb_x] = varc;
s->avg_mb_var+= varc;
s->mc_mb_var += vard;
#if 0
printf("varc=%4d avg_var=%4d (sum=%4d) vard=%4d mx=%2d my=%2d\n",
varc, s->avg_mb_var, sum, vard, mx - xx, my - yy);
#endif
if(s->flags&CODEC_FLAG_HQ){
if (vard*2 + 200 > varc)
mb_type|= MB_TYPE_INTRA;
if (varc*2 + 200 > vard){
mb_type|= MB_TYPE_INTER;
halfpel_motion_search(s, &mx, &my, dmin, xmin, ymin, xmax, ymax, pred_x, pred_y, ref_picture);
}else{
mx = mx*2 - mb_x*32;
my = my*2 - mb_y*32;
}
}else{
if (vard <= 64 || vard < varc) {
mb_type|= MB_TYPE_INTER;
if (s->me_method != ME_ZERO) {
halfpel_motion_search(s, &mx, &my, dmin, xmin, ymin, xmax, ymax, pred_x, pred_y, ref_picture);
} else {
mx -= 16 * mb_x;
my -= 16 * mb_y;
}
#if 0
if (vard < 10) {
skip++;
fprintf(stderr,"\nEarly skip: %d vard: %2d varc: %5d dmin: %d",
skip, vard, varc, dmin);
}
#endif
}else{
mb_type|= MB_TYPE_INTRA;
mx = 0;//mx*2 - 32 * mb_x;
my = 0;//my*2 - 32 * mb_y;
}
}
s->mb_type[mb_y*s->mb_width + mb_x]= mb_type;
set_p_mv_tables(s, mx, my);
}
int ff_estimate_motion_b(MpegEncContext * s,
int mb_x, int mb_y, int16_t (*mv_table)[2], uint8_t *ref_picture, int f_code)
{
int mx, my, range, dmin;
int xmin, ymin, xmax, ymax;
int rel_xmin, rel_ymin, rel_xmax, rel_ymax;
int pred_x=0, pred_y=0;
int P[6][2];
const int shift= 1+s->quarter_sample;
const int mot_stride = s->mb_width + 2;
const int mot_xy = (mb_y + 1)*mot_stride + mb_x + 1;
get_limits(s, &range, &xmin, &ymin, &xmax, &ymax, f_code);
switch(s->me_method) {
case ME_ZERO:
default:
no_motion_search(s, &mx, &my);
dmin = 0;
break;
case ME_FULL:
dmin = full_motion_search(s, &mx, &my, range, xmin, ymin, xmax, ymax, ref_picture);
break;
case ME_LOG:
dmin = log_motion_search(s, &mx, &my, range / 2, xmin, ymin, xmax, ymax, ref_picture);
break;
case ME_PHODS:
dmin = phods_motion_search(s, &mx, &my, range / 2, xmin, ymin, xmax, ymax, ref_picture);
break;
case ME_X1:
case ME_EPZS:
{
rel_xmin= xmin - mb_x*16;
rel_xmax= xmax - mb_x*16;
rel_ymin= ymin - mb_y*16;
rel_ymax= ymax - mb_y*16;
P[0][0] = mv_table[mot_xy ][0];
P[0][1] = mv_table[mot_xy ][1];
P[1][0] = mv_table[mot_xy - 1][0];
P[1][1] = mv_table[mot_xy - 1][1];
if(P[1][0] > (rel_xmax<<shift)) P[1][0]= (rel_xmax<<shift);
/* special case for first line */
if ((mb_y == 0 || s->first_slice_line || s->first_gob_line)) {
P[4][0] = P[1][0];
P[4][1] = P[1][1];
} else {
P[2][0] = mv_table[mot_xy - mot_stride ][0];
P[2][1] = mv_table[mot_xy - mot_stride ][1];
P[3][0] = mv_table[mot_xy - mot_stride + 1 ][0];
P[3][1] = mv_table[mot_xy - mot_stride + 1 ][1];
if(P[2][1] > (rel_ymax<<shift)) P[2][1]= (rel_ymax<<shift);
if(P[3][0] < (rel_xmin<<shift)) P[3][0]= (rel_xmin<<shift);
if(P[3][1] > (rel_ymax<<shift)) P[3][1]= (rel_ymax<<shift);
P[4][0]= mid_pred(P[1][0], P[2][0], P[3][0]);
P[4][1]= mid_pred(P[1][1], P[2][1], P[3][1]);
}
pred_x= P[1][0];
pred_y= P[1][1];
}
dmin = epzs_motion_search(s, &mx, &my, P, pred_x, pred_y, rel_xmin, rel_ymin, rel_xmax, rel_ymax, ref_picture);
mx+= mb_x*16;
my+= mb_y*16;
break;
}
/* intra / predictive decision */
// xx = mb_x * 16;
// yy = mb_y * 16;
// pix = s->new_picture[0] + (yy * s->linesize) + xx;
/* At this point (mx,my) are full-pell and the absolute displacement */
// ppix = ref_picture + (my * s->linesize) + mx;
dmin= halfpel_motion_search(s, &mx, &my, dmin, xmin, ymin, xmax, ymax, pred_x, pred_y, ref_picture);
// s->mb_type[mb_y*s->mb_width + mb_x]= mb_type;
mv_table[mot_xy][0]= mx;
mv_table[mot_xy][1]= my;
return dmin;
}
static inline int check_bidir_mv(MpegEncContext * s,
int mb_x, int mb_y,
int motion_fx, int motion_fy,
int motion_bx, int motion_by,
int pred_fx, int pred_fy,
int pred_bx, int pred_by)
{
//FIXME optimize?
UINT16 *mv_penalty= s->mv_penalty[s->f_code] + MAX_MV; // f_code of the prev frame
uint8_t *dest_y = s->me_scratchpad;
uint8_t *ptr;
int dxy;
int src_x, src_y;
int fbmin;
fbmin = (mv_penalty[motion_fx-pred_fx] + mv_penalty[motion_fy-pred_fy])*s->qscale;
dxy = ((motion_fy & 1) << 1) | (motion_fx & 1);
src_x = mb_x * 16 + (motion_fx >> 1);
src_y = mb_y * 16 + (motion_fy >> 1);
ptr = s->last_picture[0] + (src_y * s->linesize) + src_x;
put_pixels_tab[dxy](dest_y , ptr , s->linesize, 16);
put_pixels_tab[dxy](dest_y + 8, ptr + 8, s->linesize, 16);
fbmin += (mv_penalty[motion_bx-pred_bx] + mv_penalty[motion_by-pred_by])*s->qscale;
dxy = ((motion_by & 1) << 1) | (motion_bx & 1);
src_x = mb_x * 16 + (motion_bx >> 1);
src_y = mb_y * 16 + (motion_by >> 1);
ptr = s->next_picture[0] + (src_y * s->linesize) + src_x;
avg_pixels_tab[dxy](dest_y , ptr , s->linesize, 16);
avg_pixels_tab[dxy](dest_y + 8, ptr + 8, s->linesize, 16);
fbmin += pix_abs16x16(s->new_picture[0] + mb_x*16 + mb_y*16*s->linesize, dest_y, s->linesize);
return fbmin;
}
/* refine the bidir vectors in hq mode and return the score in both lq & hq mode*/
static inline int bidir_refine(MpegEncContext * s,
int mb_x, int mb_y)
{
const int mot_stride = s->mb_width + 2;
const int xy = (mb_y + 1)*mot_stride + mb_x + 1;
int fbmin;
int pred_fx= s->b_bidir_forw_mv_table[xy-1][0];
int pred_fy= s->b_bidir_forw_mv_table[xy-1][1];
int pred_bx= s->b_bidir_back_mv_table[xy-1][0];
int pred_by= s->b_bidir_back_mv_table[xy-1][1];
int motion_fx= s->b_bidir_forw_mv_table[xy][0]= s->b_forw_mv_table[xy][0];
int motion_fy= s->b_bidir_forw_mv_table[xy][1]= s->b_forw_mv_table[xy][1];
int motion_bx= s->b_bidir_back_mv_table[xy][0]= s->b_back_mv_table[xy][0];
int motion_by= s->b_bidir_back_mv_table[xy][1]= s->b_back_mv_table[xy][1];
//FIXME do refinement and add flag
fbmin= check_bidir_mv(s, mb_x, mb_y,
motion_fx, motion_fy,
motion_bx, motion_by,
pred_fx, pred_fy,
pred_bx, pred_by);
return fbmin;
}
static inline int direct_search(MpegEncContext * s,
int mb_x, int mb_y)
{
int P[6][2];
const int mot_stride = s->mb_width + 2;
const int mot_xy = (mb_y + 1)*mot_stride + mb_x + 1;
int dmin, dmin2;
int motion_fx, motion_fy, motion_bx, motion_by, motion_bx0, motion_by0;
int motion_dx, motion_dy;
const int motion_px= s->p_mv_table[mot_xy][0];
const int motion_py= s->p_mv_table[mot_xy][1];
const int time_pp= s->pp_time;
const int time_bp= s->bp_time;
const int time_pb= time_pp - time_bp;
int bx, by;
int mx, my, mx2, my2;
uint8_t *ref_picture= s->me_scratchpad - (mb_x + 1 + (mb_y + 1)*s->linesize)*16;
int16_t (*mv_table)[2]= s->b_direct_mv_table;
uint16_t *mv_penalty= s->mv_penalty[s->f_code] + MAX_MV; // f_code of the prev frame
/* thanks to iso-mpeg the rounding is different for the zero vector, so we need to handle that ... */
motion_fx= (motion_px*time_pb)/time_pp;
motion_fy= (motion_py*time_pb)/time_pp;
motion_bx0= (-motion_px*time_bp)/time_pp;
motion_by0= (-motion_py*time_bp)/time_pp;
motion_dx= motion_dy=0;
dmin2= check_bidir_mv(s, mb_x, mb_y,
motion_fx, motion_fy,
motion_bx0, motion_by0,
motion_fx, motion_fy,
motion_bx0, motion_by0) - s->qscale;
motion_bx= motion_fx - motion_px;
motion_by= motion_fy - motion_py;
for(by=-1; by<2; by++){
for(bx=-1; bx<2; bx++){
uint8_t *dest_y = s->me_scratchpad + (by+1)*s->linesize*16 + (bx+1)*16;
uint8_t *ptr;
int dxy;
int src_x, src_y;
const int width= s->width;
const int height= s->height;
dxy = ((motion_fy & 1) << 1) | (motion_fx & 1);
src_x = (mb_x + bx) * 16 + (motion_fx >> 1);
src_y = (mb_y + by) * 16 + (motion_fy >> 1);
src_x = clip(src_x, -16, width);
if (src_x == width) dxy &= ~1;
src_y = clip(src_y, -16, height);
if (src_y == height) dxy &= ~2;
ptr = s->last_picture[0] + (src_y * s->linesize) + src_x;
put_pixels_tab[dxy](dest_y , ptr , s->linesize, 16);
put_pixels_tab[dxy](dest_y + 8, ptr + 8, s->linesize, 16);
dxy = ((motion_by & 1) << 1) | (motion_bx & 1);
src_x = (mb_x + bx) * 16 + (motion_bx >> 1);
src_y = (mb_y + by) * 16 + (motion_by >> 1);
src_x = clip(src_x, -16, width);
if (src_x == width) dxy &= ~1;
src_y = clip(src_y, -16, height);
if (src_y == height) dxy &= ~2;
avg_pixels_tab[dxy](dest_y , ptr , s->linesize, 16);
avg_pixels_tab[dxy](dest_y + 8, ptr + 8, s->linesize, 16);
}
}
P[0][0] = mv_table[mot_xy ][0];
P[0][1] = mv_table[mot_xy ][1];
P[1][0] = mv_table[mot_xy - 1][0];
P[1][1] = mv_table[mot_xy - 1][1];
/* special case for first line */
if ((mb_y == 0 || s->first_slice_line || s->first_gob_line)) {
P[4][0] = P[1][0];
P[4][1] = P[1][1];
} else {
P[2][0] = mv_table[mot_xy - mot_stride ][0];
P[2][1] = mv_table[mot_xy - mot_stride ][1];
P[3][0] = mv_table[mot_xy - mot_stride + 1 ][0];
P[3][1] = mv_table[mot_xy - mot_stride + 1 ][1];
P[4][0]= mid_pred(P[1][0], P[2][0], P[3][0]);
P[4][1]= mid_pred(P[1][1], P[2][1], P[3][1]);
}
dmin = epzs_motion_search(s, &mx, &my, P, 0, 0, -16, -16, 15, 15, ref_picture);
if(mx==0 && my==0) dmin=99999999; // not representable, due to rounding stuff
if(dmin2<dmin){
dmin= dmin2;
mx=0;
my=0;
}
#if 1
mx2= mx= mx*2;
my2= my= my*2;
for(by=-1; by<2; by++){
if(my2+by < -32) continue;
for(bx=-1; bx<2; bx++){
if(bx==0 && by==0) continue;
if(mx2+bx < -32) continue;
dmin2= check_bidir_mv(s, mb_x, mb_y,
mx2+bx+motion_fx, my2+by+motion_fy,
mx2+bx+motion_bx, my2+by+motion_by,
mx2+bx+motion_fx, my2+by+motion_fy,
motion_bx, motion_by) - s->qscale;
if(dmin2<dmin){
dmin=dmin2;
mx= mx2 + bx;
my= my2 + by;
}
}
}
#else
mx*=2; my*=2;
#endif
if(mx==0 && my==0){
motion_bx= motion_bx0;
motion_by= motion_by0;
}
s->b_direct_mv_table[mot_xy][0]= mx;
s->b_direct_mv_table[mot_xy][1]= my;
s->b_direct_forw_mv_table[mot_xy][0]= motion_fx + mx;
s->b_direct_forw_mv_table[mot_xy][1]= motion_fy + my;
s->b_direct_back_mv_table[mot_xy][0]= motion_bx + mx;
s->b_direct_back_mv_table[mot_xy][1]= motion_by + my;
return dmin;
}
void ff_estimate_b_frame_motion(MpegEncContext * s,
int mb_x, int mb_y)
{
const int mot_stride = s->mb_width + 2;
const int xy = (mb_y + 1)*mot_stride + mb_x + 1;
const int quant= s->qscale;
int fmin, bmin, dmin, fbmin;
int type=0;
int motion_fx, motion_fy, motion_bx, motion_by;
dmin= direct_search(s, mb_x, mb_y);
fmin= ff_estimate_motion_b(s, mb_x, mb_y, s->b_forw_mv_table, s->last_picture[0], s->f_code);
bmin= ff_estimate_motion_b(s, mb_x, mb_y, s->b_back_mv_table, s->next_picture[0], s->b_code) - quant;
//printf(" %d %d ", s->b_forw_mv_table[xy][0], s->b_forw_mv_table[xy][1]);
fbmin= bidir_refine(s, mb_x, mb_y);
if(s->flags&CODEC_FLAG_HQ){
type= MB_TYPE_FORWARD | MB_TYPE_BACKWARD | MB_TYPE_BIDIR | MB_TYPE_DIRECT;
}else{
int score= dmin;
type=MB_TYPE_DIRECT;
if(fmin<score){
score=fmin;
type= MB_TYPE_FORWARD;
}
if(bmin<score){
score=bmin;
type= MB_TYPE_BACKWARD;
}
if(fbmin<score){
score=fbmin;
type= MB_TYPE_BIDIR;
}
s->mc_mb_var += score;
}
s->mb_type[mb_y*s->mb_width + mb_x]= type;
}
/* find best f_code for ME which do unlimited searches */
int ff_get_best_fcode(MpegEncContext * s, int16_t (*mv_table)[2], int type)
{
int f_code;
if(s->me_method>=ME_EPZS){
int mv_num[8];
int i, y;
int loose=0;
UINT8 * fcode_tab= s->fcode_tab;
for(i=0; i<8; i++) mv_num[i]=0;
for(y=0; y<s->mb_height; y++){
int x;
int xy= (y+1)* (s->mb_width+2) + 1;
i= y*s->mb_width;
for(x=0; x<s->mb_width; x++){
if(s->mb_type[i] & type){
mv_num[ fcode_tab[mv_table[xy][0] + MAX_MV] ]++;
mv_num[ fcode_tab[mv_table[xy][1] + MAX_MV] ]++;
//printf("%d %d %d\n", s->mv_table[0][i], fcode_tab[s->mv_table[0][i] + MAX_MV], i);
}
i++;
xy++;
}
}
for(i=MAX_FCODE; i>1; i--){
int threshold;
loose+= mv_num[i];
if(s->pict_type==B_TYPE) threshold= 0;
else threshold= s->mb_num/20; //FIXME
if(loose > threshold) break;
}
// printf("fcode: %d type: %d\n", i, s->pict_type);
return i;
/* for(i=0; i<=MAX_FCODE; i++){
printf("%d ", mv_num[i]);
}
printf("\n");*/
}else{
return 1;
}
}
void ff_fix_long_p_mvs(MpegEncContext * s)
{
const int f_code= s->f_code;
int y;
UINT8 * fcode_tab= s->fcode_tab;
/* clip / convert to intra 16x16 type MVs */
for(y=0; y<s->mb_height; y++){
int x;
int xy= (y+1)* (s->mb_width+2)+1;
int i= y*s->mb_width;
for(x=0; x<s->mb_width; x++){
if(s->mb_type[i]&MB_TYPE_INTER){
if( fcode_tab[s->p_mv_table[xy][0] + MAX_MV] > f_code
|| fcode_tab[s->p_mv_table[xy][0] + MAX_MV] == 0
|| fcode_tab[s->p_mv_table[xy][1] + MAX_MV] > f_code
|| fcode_tab[s->p_mv_table[xy][1] + MAX_MV] == 0 ){
s->mb_type[i] &= ~MB_TYPE_INTER;
s->mb_type[i] |= MB_TYPE_INTRA;
s->p_mv_table[xy][0] = 0;
s->p_mv_table[xy][1] = 0;
}
}
xy++;
i++;
}
}
if(s->flags&CODEC_FLAG_4MV){
const int wrap= 2+ s->mb_width*2;
/* clip / convert to intra 8x8 type MVs */
for(y=0; y<s->mb_height; y++){
int xy= (y*2 + 1)*wrap + 1;
int i= y*s->mb_width;
int x;
for(x=0; x<s->mb_width; x++){
if(s->mb_type[i]&MB_TYPE_INTER4V){
int block;
for(block=0; block<4; block++){
int off= (block& 1) + (block>>1)*wrap;
int mx= s->motion_val[ xy + off ][0];
int my= s->motion_val[ xy + off ][1];
if( fcode_tab[mx + MAX_MV] > f_code
|| fcode_tab[mx + MAX_MV] == 0
|| fcode_tab[my + MAX_MV] > f_code
|| fcode_tab[my + MAX_MV] == 0 ){
s->mb_type[i] &= ~MB_TYPE_INTER4V;
s->mb_type[i] |= MB_TYPE_INTRA;
}
}
xy+=2;
i++;
}
}
}
}
}
void ff_fix_long_b_mvs(MpegEncContext * s, int16_t (*mv_table)[2], int f_code, int type)
{
int y;
UINT8 * fcode_tab= s->fcode_tab;
/* clip / convert to intra 16x16 type MVs */
for(y=0; y<s->mb_height; y++){
int x;
int xy= (y+1)* (s->mb_width+2)+1;
int i= y*s->mb_width;
for(x=0; x<s->mb_width; x++){
if(s->mb_type[i]&type){
if( fcode_tab[mv_table[xy][0] + MAX_MV] > f_code
|| fcode_tab[mv_table[xy][0] + MAX_MV] == 0
|| fcode_tab[mv_table[xy][1] + MAX_MV] > f_code
|| fcode_tab[mv_table[xy][1] + MAX_MV] == 0 ){
if(s->mb_type[i]&(~type)) s->mb_type[i] &= ~type;
else{
mv_table[xy][0] = 0;
mv_table[xy][1] = 0;
//this is certainly bad FIXME
}
}
}
xy++;
i++;
}
}
}
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