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/*
* 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 "scene_sad.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
ff_scene_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 */
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