/* * H261 common code * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at> * Copyright (c) 2004 Maarten Daniels * * This file is part of FFmpeg. * * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * FFmpeg 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 * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *//** * @file h261.c * h261codec. */#include "dsputil.h"#include "avcodec.h"#include "h261.h"#define IS_FIL(a)    ((a)&MB_TYPE_H261_FIL)uint8_t ff_h261_rl_table_store[2][2*MAX_RUN + MAX_LEVEL + 3];void ff_h261_loop_filter(MpegEncContext *s){    H261Context * h= (H261Context*)s;    const int linesize  = s->linesize;    const int uvlinesize= s->uvlinesize;    uint8_t *dest_y = s->dest[0];    uint8_t *dest_cb= s->dest[1];    uint8_t *dest_cr= s->dest[2];    if(!(IS_FIL (h->mtype)))        return;    s->dsp.h261_loop_filter(dest_y                   , linesize);    s->dsp.h261_loop_filter(dest_y                + 8, linesize);    s->dsp.h261_loop_filter(dest_y + 8 * linesize    , linesize);    s->dsp.h261_loop_filter(dest_y + 8 * linesize + 8, linesize);    s->dsp.h261_loop_filter(dest_cb, uvlinesize);    s->dsp.h261_loop_filter(dest_cr, uvlinesize);}