/* * 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 * Double input streams helper for filters */ #ifndef AVFILTER_DUALINPUT_H#define AVFILTER_DUALINPUT_H #include <stdint.h>#include "bufferqueue.h"#include "framesync.h"#include "internal.h" typedef struct {    FFFrameSync fs;     AVFrame *(*process)(AVFilterContext *ctx, AVFrame *main, const AVFrame *second);    int shortest;               ///< terminate stream when the second input terminates    int repeatlast;             ///< repeat last second frame    int skip_initial_unpaired;  ///< Skip initial frames that do not have a 2nd input} FFDualInputContext; int ff_dualinput_init(AVFilterContext *ctx, FFDualInputContext *s);int ff_dualinput_filter_frame(FFDualInputContext *s, AVFilterLink *inlink, AVFrame *in);int ff_dualinput_request_frame(FFDualInputContext *s, AVFilterLink *outlink);void ff_dualinput_uninit(FFDualInputContext *s); #endif /* AVFILTER_DUALINPUT_H */