| 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 */ |