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/*
* 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 */
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