From 43286028906adab67ec87bc15ff3010d0f6c2ff0 Mon Sep 17 00:00:00 2001 From: Clément Bœsch Date: Sat, 25 May 2013 16:25:46 +0200 Subject: lavfi: add dual input helpers. --- libavfilter/dualinput.h | 46 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 libavfilter/dualinput.h (limited to 'libavfilter/dualinput.h') diff --git a/libavfilter/dualinput.h b/libavfilter/dualinput.h new file mode 100644 index 0000000000..98d05442c7 --- /dev/null +++ b/libavfilter/dualinput.h @@ -0,0 +1,46 @@ +/* + * 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 +#include "bufferqueue.h" +#include "internal.h" + +typedef struct { + uint8_t frame_requested; + uint8_t second_eof; + AVFrame *second_frame; + struct FFBufQueue queue[2]; + AVFrame *(*process)(AVFilterContext *ctx, AVFrame *main, const AVFrame *second); + int shortest; ///< terminate stream when the second input terminates + int repeatlast; ///< repeat last second frame +} FFDualInputContext; + +int ff_dualinput_filter_frame_main(FFDualInputContext *s, AVFilterLink *inlink, AVFrame *in); +int ff_dualinput_filter_frame_second(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 */ -- cgit v1.2.3