1/* 2 * This file is part of FFmpeg. 3 * 4 * FFmpeg is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU Lesser General Public 6 * License as published by the Free Software Foundation; either 7 * version 2.1 of the License, or (at your option) any later version. 8 * 9 * FFmpeg is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 * Lesser General Public License for more details. 13 * 14 * You should have received a copy of the GNU Lesser General Public 15 * License along with FFmpeg; if not, write to the Free Software 16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 17 */ 18 19/** 20 * @file 21 * Double input streams helper for filters 22 */ 23 24#ifndef AVFILTER_DUALINPUT_H 25#define AVFILTER_DUALINPUT_H 26 27#include <stdint.h> 28#include "bufferqueue.h" 29#include "framesync.h" 30#include "internal.h" 31 32typedef struct { 33 FFFrameSync fs; 34 FFFrameSyncIn second_input; /* must be immediately after fs */ 35 36 AVFrame *(*process)(AVFilterContext *ctx, AVFrame *main, const AVFrame *second); 37 int shortest; ///< terminate stream when the second input terminates 38 int repeatlast; ///< repeat last second frame 39} FFDualInputContext; 40 41int ff_dualinput_init(AVFilterContext *ctx, FFDualInputContext *s); 42int ff_dualinput_filter_frame(FFDualInputContext *s, AVFilterLink *inlink, AVFrame *in); 43int ff_dualinput_request_frame(FFDualInputContext *s, AVFilterLink *outlink); 44void ff_dualinput_uninit(FFDualInputContext *s); 45 46#endif /* AVFILTER_DUALINPUT_H */ 47