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814 lines
21 KiB
C
814 lines
21 KiB
C
/*
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* Motion estimation
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* Copyright (c) 2000,2001 Gerard Lantau.
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*
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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* new Motion Estimation (X1/EPZS) by Michael Niedermayer <michaelni@gmx.at>
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include "avcodec.h"
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#include "dsputil.h"
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#include "mpegvideo.h"
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#define ABS(a) ((a)>0 ? (a) : -(a))
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#define INTER_BIAS 257
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static void halfpel_motion_search(MpegEncContext * s,
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int *mx_ptr, int *my_ptr, int dmin,
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int xmin, int ymin, int xmax, int ymax,
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int pred_x, int pred_y);
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/* config it to test motion vector encoding (send random vectors) */
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//#define CONFIG_TEST_MV_ENCODE
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static int pix_sum(UINT8 * pix, int line_size)
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{
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int s, i, j;
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s = 0;
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for (i = 0; i < 16; i++) {
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for (j = 0; j < 16; j += 8) {
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s += pix[0];
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s += pix[1];
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s += pix[2];
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s += pix[3];
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s += pix[4];
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s += pix[5];
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s += pix[6];
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s += pix[7];
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pix += 8;
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}
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pix += line_size - 16;
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}
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return s;
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}
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static int pix_dev(UINT8 * pix, int line_size, int mean)
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{
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int s, i, j;
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s = 0;
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for (i = 0; i < 16; i++) {
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for (j = 0; j < 16; j += 8) {
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s += ABS(pix[0]-mean);
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s += ABS(pix[1]-mean);
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s += ABS(pix[2]-mean);
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s += ABS(pix[3]-mean);
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s += ABS(pix[4]-mean);
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s += ABS(pix[5]-mean);
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s += ABS(pix[6]-mean);
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s += ABS(pix[7]-mean);
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pix += 8;
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}
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pix += line_size - 16;
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}
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return s;
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}
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static int pix_norm1(UINT8 * pix, int line_size)
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{
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int s, i, j;
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UINT32 *sq = squareTbl + 256;
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s = 0;
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for (i = 0; i < 16; i++) {
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for (j = 0; j < 16; j += 8) {
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s += sq[pix[0]];
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s += sq[pix[1]];
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s += sq[pix[2]];
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s += sq[pix[3]];
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s += sq[pix[4]];
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s += sq[pix[5]];
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s += sq[pix[6]];
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s += sq[pix[7]];
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pix += 8;
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}
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pix += line_size - 16;
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}
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return s;
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}
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static int pix_norm(UINT8 * pix1, UINT8 * pix2, int line_size)
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{
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int s, i, j;
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UINT32 *sq = squareTbl + 256;
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s = 0;
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for (i = 0; i < 16; i++) {
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for (j = 0; j < 16; j += 8) {
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s += sq[pix1[0] - pix2[0]];
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s += sq[pix1[1] - pix2[1]];
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s += sq[pix1[2] - pix2[2]];
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s += sq[pix1[3] - pix2[3]];
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s += sq[pix1[4] - pix2[4]];
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s += sq[pix1[5] - pix2[5]];
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s += sq[pix1[6] - pix2[6]];
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s += sq[pix1[7] - pix2[7]];
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pix1 += 8;
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pix2 += 8;
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}
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pix1 += line_size - 16;
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pix2 += line_size - 16;
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}
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return s;
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}
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static void no_motion_search(MpegEncContext * s,
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int *mx_ptr, int *my_ptr)
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{
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*mx_ptr = 16 * s->mb_x;
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*my_ptr = 16 * s->mb_y;
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}
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static int full_motion_search(MpegEncContext * s,
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int *mx_ptr, int *my_ptr, int range,
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int xmin, int ymin, int xmax, int ymax)
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{
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int x1, y1, x2, y2, xx, yy, x, y;
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int mx, my, dmin, d;
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UINT8 *pix;
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xx = 16 * s->mb_x;
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yy = 16 * s->mb_y;
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x1 = xx - range + 1; /* we loose one pixel to avoid boundary pb with half pixel pred */
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if (x1 < xmin)
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x1 = xmin;
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x2 = xx + range - 1;
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if (x2 > xmax)
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x2 = xmax;
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y1 = yy - range + 1;
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if (y1 < ymin)
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y1 = ymin;
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y2 = yy + range - 1;
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if (y2 > ymax)
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y2 = ymax;
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pix = s->new_picture[0] + (yy * s->linesize) + xx;
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dmin = 0x7fffffff;
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mx = 0;
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my = 0;
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for (y = y1; y <= y2; y++) {
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for (x = x1; x <= x2; x++) {
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d = pix_abs16x16(pix, s->last_picture[0] + (y * s->linesize) + x,
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s->linesize, 16);
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if (d < dmin ||
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(d == dmin &&
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(abs(x - xx) + abs(y - yy)) <
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(abs(mx - xx) + abs(my - yy)))) {
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dmin = d;
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mx = x;
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my = y;
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}
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}
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}
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*mx_ptr = mx;
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*my_ptr = my;
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#if 0
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if (*mx_ptr < -(2 * range) || *mx_ptr >= (2 * range) ||
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*my_ptr < -(2 * range) || *my_ptr >= (2 * range)) {
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fprintf(stderr, "error %d %d\n", *mx_ptr, *my_ptr);
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}
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#endif
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return dmin;
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}
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static int log_motion_search(MpegEncContext * s,
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int *mx_ptr, int *my_ptr, int range,
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int xmin, int ymin, int xmax, int ymax)
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{
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int x1, y1, x2, y2, xx, yy, x, y;
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int mx, my, dmin, d;
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UINT8 *pix;
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xx = s->mb_x << 4;
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yy = s->mb_y << 4;
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/* Left limit */
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x1 = xx - range;
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if (x1 < xmin)
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x1 = xmin;
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/* Right limit */
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x2 = xx + range;
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if (x2 > xmax)
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x2 = xmax;
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/* Upper limit */
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y1 = yy - range;
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if (y1 < ymin)
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y1 = ymin;
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/* Lower limit */
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y2 = yy + range;
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if (y2 > ymax)
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y2 = ymax;
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pix = s->new_picture[0] + (yy * s->linesize) + xx;
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dmin = 0x7fffffff;
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mx = 0;
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my = 0;
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do {
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for (y = y1; y <= y2; y += range) {
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for (x = x1; x <= x2; x += range) {
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d = pix_abs16x16(pix, s->last_picture[0] + (y * s->linesize) + x, s->linesize, 16);
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if (d < dmin || (d == dmin && (abs(x - xx) + abs(y - yy)) < (abs(mx - xx) + abs(my - yy)))) {
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dmin = d;
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mx = x;
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my = y;
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}
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}
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}
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range = range >> 1;
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x1 = mx - range;
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if (x1 < xmin)
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x1 = xmin;
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x2 = mx + range;
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if (x2 > xmax)
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x2 = xmax;
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y1 = my - range;
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if (y1 < ymin)
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y1 = ymin;
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y2 = my + range;
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if (y2 > ymax)
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y2 = ymax;
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} while (range >= 1);
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#ifdef DEBUG
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fprintf(stderr, "log - MX: %d\tMY: %d\n", mx, my);
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#endif
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*mx_ptr = mx;
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*my_ptr = my;
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return dmin;
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}
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static int phods_motion_search(MpegEncContext * s,
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int *mx_ptr, int *my_ptr, int range,
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int xmin, int ymin, int xmax, int ymax)
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{
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int x1, y1, x2, y2, xx, yy, x, y, lastx, d;
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int mx, my, dminx, dminy;
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UINT8 *pix;
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xx = s->mb_x << 4;
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yy = s->mb_y << 4;
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/* Left limit */
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x1 = xx - range;
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if (x1 < xmin)
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x1 = xmin;
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/* Right limit */
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x2 = xx + range;
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if (x2 > xmax)
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x2 = xmax;
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/* Upper limit */
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y1 = yy - range;
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if (y1 < ymin)
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y1 = ymin;
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/* Lower limit */
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y2 = yy + range;
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if (y2 > ymax)
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y2 = ymax;
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pix = s->new_picture[0] + (yy * s->linesize) + xx;
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mx = 0;
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my = 0;
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x = xx;
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y = yy;
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do {
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dminx = 0x7fffffff;
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dminy = 0x7fffffff;
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lastx = x;
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for (x = x1; x <= x2; x += range) {
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d = pix_abs16x16(pix, s->last_picture[0] + (y * s->linesize) + x, s->linesize, 16);
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if (d < dminx || (d == dminx && (abs(x - xx) + abs(y - yy)) < (abs(mx - xx) + abs(my - yy)))) {
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dminx = d;
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mx = x;
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}
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}
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x = lastx;
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for (y = y1; y <= y2; y += range) {
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d = pix_abs16x16(pix, s->last_picture[0] + (y * s->linesize) + x, s->linesize, 16);
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if (d < dminy || (d == dminy && (abs(x - xx) + abs(y - yy)) < (abs(mx - xx) + abs(my - yy)))) {
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dminy = d;
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my = y;
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}
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}
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range = range >> 1;
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x = mx;
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y = my;
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x1 = mx - range;
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if (x1 < xmin)
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x1 = xmin;
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x2 = mx + range;
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if (x2 > xmax)
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x2 = xmax;
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y1 = my - range;
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if (y1 < ymin)
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y1 = ymin;
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y2 = my + range;
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if (y2 > ymax)
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y2 = ymax;
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} while (range >= 1);
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#ifdef DEBUG
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fprintf(stderr, "phods - MX: %d\tMY: %d\n", mx, my);
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#endif
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/* half pixel search */
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*mx_ptr = mx;
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*my_ptr = my;
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return dminy;
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}
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#define Z_THRESHOLD 256
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#define CHECK_MV(x,y)\
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{\
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d = pix_abs16x16(new_pic, old_pic + (x) + (y)*pic_stride, pic_stride, 16);\
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d += (mv_penalty[((x)<<shift)-pred_x] + mv_penalty[((y)<<shift)-pred_y])*quant;\
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if(d<dmin){\
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best[0]=x;\
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best[1]=y;\
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dmin=d;\
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}\
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}
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#define CHECK_MV_DIR(x,y,new_dir)\
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{\
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d = pix_abs16x16(new_pic, old_pic + (x) + (y)*pic_stride, pic_stride, 16);\
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d += (mv_penalty[((x)<<shift)-pred_x] + mv_penalty[((y)<<shift)-pred_y])*quant;\
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if(d<dmin){\
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best[0]=x;\
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best[1]=y;\
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dmin=d;\
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next_dir= new_dir;\
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}\
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}
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#define check(x,y,S,v)\
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if( (x)<(xmin<<(S)) ) printf("%d %d %d %d xmin" #v, (x), (y), s->mb_x, s->mb_y);\
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if( (x)>(xmax<<(S)) ) printf("%d %d %d %d xmax" #v, (x), (y), s->mb_x, s->mb_y);\
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if( (y)<(ymin<<(S)) ) printf("%d %d %d %d ymin" #v, (x), (y), s->mb_x, s->mb_y);\
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if( (y)>(ymax<<(S)) ) printf("%d %d %d %d ymax" #v, (x), (y), s->mb_x, s->mb_y);\
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static inline int small_diamond_search(MpegEncContext * s, int *best, int dmin,
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UINT8 *new_pic, UINT8 *old_pic, int pic_stride,
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int pred_x, int pred_y, UINT16 *mv_penalty, int quant,
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int xmin, int ymin, int xmax, int ymax, int shift)
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{
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int next_dir=-1;
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for(;;){
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int d;
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const int dir= next_dir;
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const int x= best[0];
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const int y= best[1];
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next_dir=-1;
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//printf("%d", dir);
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if(dir!=2 && x>xmin) CHECK_MV_DIR(x-1, y , 0)
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if(dir!=3 && y>ymin) CHECK_MV_DIR(x , y-1, 1)
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if(dir!=0 && x<xmax) CHECK_MV_DIR(x+1, y , 2)
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if(dir!=1 && y<ymax) CHECK_MV_DIR(x , y+1, 3)
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if(next_dir==-1){
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return dmin;
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}
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}
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/* for(;;){
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int d;
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const int x= best[0];
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const int y= best[1];
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const int last_min=dmin;
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if(x>xmin) CHECK_MV(x-1, y )
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if(y>xmin) CHECK_MV(x , y-1)
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if(x<xmax) CHECK_MV(x+1, y )
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if(y<xmax) CHECK_MV(x , y+1)
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if(x>xmin && y>ymin) CHECK_MV(x-1, y-1)
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if(x>xmin && y<ymax) CHECK_MV(x-1, y+1)
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if(x<xmax && y>ymin) CHECK_MV(x+1, y-1)
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if(x<xmax && y<ymax) CHECK_MV(x+1, y+1)
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if(x-1>xmin) CHECK_MV(x-2, y )
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if(y-1>xmin) CHECK_MV(x , y-2)
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if(x+1<xmax) CHECK_MV(x+2, y )
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if(y+1<xmax) CHECK_MV(x , y+2)
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if(x-1>xmin && y-1>ymin) CHECK_MV(x-2, y-2)
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if(x-1>xmin && y+1<ymax) CHECK_MV(x-2, y+2)
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if(x+1<xmax && y-1>ymin) CHECK_MV(x+2, y-2)
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if(x+1<xmax && y+1<ymax) CHECK_MV(x+2, y+2)
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if(dmin==last_min) return dmin;
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}
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*/
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}
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static inline int snake_search(MpegEncContext * s, int *best, int dmin,
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UINT8 *new_pic, UINT8 *old_pic, int pic_stride,
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int pred_x, int pred_y, UINT16 *mv_penalty, int quant,
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int xmin, int ymin, int xmax, int ymax, int shift)
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{
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int dir=0;
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int c=1;
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static int x_dir[8]= {1,1,0,-1,-1,-1, 0, 1};
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static int y_dir[8]= {0,1,1, 1, 0,-1,-1,-1};
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int fails=0;
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int last_d[2]={dmin, dmin};
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/*static int good=0;
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static int bad=0;
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static int point=0;
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point++;
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if(256*256*256*64%point==0)
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{
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printf("%d %d %d\n", good, bad, point);
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}*/
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for(;;){
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int x= best[0];
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int y= best[1];
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int d;
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x+=x_dir[dir];
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y+=y_dir[dir];
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if(x>=xmin && x<=xmax && y>=ymin && y<=ymax){
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d = pix_abs16x16(new_pic, old_pic + (x) + (y)*pic_stride, pic_stride, 16);
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d += (mv_penalty[((x)<<shift)-pred_x] + mv_penalty[((y)<<shift)-pred_y])*quant;
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}else{
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d = dmin + 10000; //FIXME smarter boundary handling
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}
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if(d<dmin){
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best[0]=x;
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best[1]=y;
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dmin=d;
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if(last_d[1] - last_d[0] > last_d[0] - d) c= -c;
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dir+=c;
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fails=0;
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//good++;
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last_d[1]=last_d[0];
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last_d[0]=d;
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}else{
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//bad++;
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if(fails){
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if(fails>=3) return dmin;
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}else{
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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)
|
|
{
|
|
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 = s->last_picture[0] + pic_xy;
|
|
|
|
dmin = pix_abs16x16(new_pic, old_pic, pic_stride, 16);
|
|
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->full_search==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;
|
|
}
|
|
|
|
#define CHECK_HALF_MV(suffix, x, y) \
|
|
d= pix_abs16x16_ ## suffix(pix, ptr+((x)>>1), s->linesize, 16);\
|
|
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 void 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)
|
|
{
|
|
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 = s->last_picture[0] + (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;
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
#ifndef CONFIG_TEST_MV_ENCODE
|
|
|
|
int estimate_motion(MpegEncContext * s,
|
|
int mb_x, int mb_y,
|
|
int *mx_ptr, int *my_ptr)
|
|
{
|
|
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[5][2];
|
|
const int shift= 1+s->quarter_sample;
|
|
|
|
range = 8 * (1 << (s->f_code - 1));
|
|
/* XXX: temporary kludge to avoid overflow for msmpeg4 */
|
|
if (s->out_format == FMT_H263 && !s->h263_msmpeg4)
|
|
range = 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;
|
|
}
|
|
switch(s->full_search) {
|
|
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);
|
|
break;
|
|
case ME_LOG:
|
|
dmin = log_motion_search(s, &mx, &my, range / 2, xmin, ymin, xmax, ymax);
|
|
break;
|
|
case ME_PHODS:
|
|
dmin = phods_motion_search(s, &mx, &my, range / 2, xmin, ymin, xmax, ymax);
|
|
break;
|
|
case ME_X1:
|
|
case ME_EPZS:
|
|
{
|
|
static const int off[4]= {2, 1, 1, -1};
|
|
const int mot_stride = s->mb_width*2 + 2;
|
|
const int mot_xy = (s->mb_y*2 + 1)*mot_stride + s->mb_x*2 + 1;
|
|
|
|
rel_xmin= xmin - s->mb_x*16;
|
|
rel_xmax= xmax - s->mb_x*16;
|
|
rel_ymin= ymin - s->mb_y*16;
|
|
rel_ymax= ymax - s->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 ((s->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 + off[0] ][0];
|
|
P[3][1] = s->motion_val[mot_xy - mot_stride + off[0] ][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);
|
|
|
|
mx+= s->mb_x*16;
|
|
my+= s->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 = s->last_picture[0] + (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, 16);
|
|
#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 (vard <= 64 || vard < varc) {
|
|
if (s->full_search != ME_ZERO) {
|
|
halfpel_motion_search(s, &mx, &my, dmin, xmin, ymin, xmax, ymax, pred_x, pred_y);
|
|
} else {
|
|
mx -= 16 * s->mb_x;
|
|
my -= 16 * s->mb_y;
|
|
}
|
|
// check(mx + 32*s->mb_x, my + 32*s->mb_y, 1, end)
|
|
|
|
*mx_ptr = mx;
|
|
*my_ptr = my;
|
|
return 0;
|
|
} else {
|
|
*mx_ptr = 0;
|
|
*my_ptr = 0;
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
#else
|
|
|
|
/* test version which generates valid random vectors */
|
|
int estimate_motion(MpegEncContext * s,
|
|
int mb_x, int mb_y,
|
|
int *mx_ptr, int *my_ptr)
|
|
{
|
|
int xx, yy, x1, y1, x2, y2, range;
|
|
|
|
if ((random() % 10) >= 5) {
|
|
range = 8 * (1 << (s->f_code - 1));
|
|
if (s->out_format == FMT_H263 && !s->h263_msmpeg4)
|
|
range = range * 2;
|
|
|
|
xx = 16 * s->mb_x;
|
|
yy = 16 * s->mb_y;
|
|
x1 = xx - range;
|
|
if (x1 < 0)
|
|
x1 = 0;
|
|
x2 = xx + range - 1;
|
|
if (x2 > (s->width - 16))
|
|
x2 = s->width - 16;
|
|
y1 = yy - range;
|
|
if (y1 < 0)
|
|
y1 = 0;
|
|
y2 = yy + range - 1;
|
|
if (y2 > (s->height - 16))
|
|
y2 = s->height - 16;
|
|
|
|
*mx_ptr = (random() % (2 * (x2 - x1 + 1))) + 2 * (x1 - xx);
|
|
*my_ptr = (random() % (2 * (y2 - y1 + 1))) + 2 * (y1 - yy);
|
|
return 0;
|
|
} else {
|
|
*mx_ptr = 0;
|
|
*my_ptr = 0;
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
#endif
|