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Diffstat (limited to 'libavfilter/framerate.h')
-rw-r--r-- | libavfilter/framerate.h | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/libavfilter/framerate.h b/libavfilter/framerate.h new file mode 100644 index 0000000000..a42d5af68a --- /dev/null +++ b/libavfilter/framerate.h @@ -0,0 +1,74 @@ +/* + * 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 + */ + +#ifndef AVFILTER_FRAMERATE_H +#define AVFILTER_FRAMERATE_H + +#include "libavutil/pixelutils.h" +#include "avfilter.h" + +#define BLEND_FUNC_PARAMS const uint8_t *src1, ptrdiff_t src1_linesize, \ + const uint8_t *src2, ptrdiff_t src2_linesize, \ + uint8_t *dst, ptrdiff_t dst_linesize, \ + ptrdiff_t width, ptrdiff_t height, \ + int factor1, int factor2, int half + +#define BLEND_FACTOR_DEPTH8 7 +#define BLEND_FACTOR_DEPTH16 15 + +typedef void (*blend_func)(BLEND_FUNC_PARAMS); + +typedef struct FrameRateContext { + const AVClass *class; + // parameters + AVRational dest_frame_rate; ///< output frames per second + int flags; ///< flags affecting frame rate conversion algorithm + double scene_score; ///< score that denotes a scene change has happened + int interp_start; ///< start of range to apply linear interpolation + int interp_end; ///< end of range to apply linear interpolation + + int line_size[4]; ///< bytes of pixel data per line for each plane + int vsub; + + AVRational srce_time_base; ///< timebase of source + AVRational dest_time_base; ///< timebase of destination + + av_pixelutils_sad_fn sad; ///< Sum of the absolute difference function (scene detect only) + double prev_mafd; ///< previous MAFD (scene detect only) + + int blend_factor_max; + int bitdepth; + AVFrame *work; + + AVFrame *f0; ///< last frame + AVFrame *f1; ///< current frame + int64_t pts0; ///< last frame pts in dest_time_base + int64_t pts1; ///< current frame pts in dest_time_base + int64_t delta; ///< pts1 to pts0 delta + double score; ///< scene change score (f0 to f1) + int flush; ///< 1 if the filter is being flushed + int64_t start_pts; ///< pts of the first output frame + int64_t n; ///< output frame counter + + blend_func blend; +} FrameRateContext; + +void ff_framerate_init(FrameRateContext *s); +void ff_framerate_init_x86(FrameRateContext *s); + +#endif /* AVFILTER_FRAMERATE_H */ |