ffmpeg/libavfilter/dualinput.h

   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
  32 typedef 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
  41 int ff_dualinput_init(AVFilterContext *ctx, FFDualInputContext *s);
  42 int ff_dualinput_filter_frame(FFDualInputContext *s, AVFilterLink *inlink, AVFrame *in);
  43 int ff_dualinput_request_frame(FFDualInputContext *s, AVFilterLink *outlink);
  44 void ff_dualinput_uninit(FFDualInputContext *s);
  45
  46 #endif /* AVFILTER_DUALINPUT_H */