FFmpeg
framerate.h
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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 #ifndef AVFILTER_FRAMERATE_H
20 #define AVFILTER_FRAMERATE_H
21 
22 #include "scene_sad.h"
23 #include "avfilter.h"
24 
25 #define BLEND_FUNC_PARAMS const uint8_t *src1, ptrdiff_t src1_linesize, \
26  const uint8_t *src2, ptrdiff_t src2_linesize, \
27  uint8_t *dst, ptrdiff_t dst_linesize, \
28  ptrdiff_t width, ptrdiff_t height, \
29  int factor1, int factor2, int half
30 
31 #define BLEND_FACTOR_DEPTH8 7
32 #define BLEND_FACTOR_DEPTH16 15
33 
35 
36 typedef struct FrameRateContext {
37  const AVClass *class;
38  // parameters
39  AVRational dest_frame_rate; ///< output frames per second
40  int flags; ///< flags affecting frame rate conversion algorithm
41  double scene_score; ///< score that denotes a scene change has happened
42  int interp_start; ///< start of range to apply linear interpolation
43  int interp_end; ///< end of range to apply linear interpolation
44 
45  int line_size[4]; ///< bytes of pixel data per line for each plane
46  int vsub;
47 
48  AVRational srce_time_base; ///< timebase of source
49  AVRational dest_time_base; ///< timebase of destination
50 
51  ff_scene_sad_fn sad; ///< Sum of the absolute difference function (scene detect only)
52  double prev_mafd; ///< previous MAFD (scene detect only)
53 
55  int bitdepth;
57 
58  AVFrame *f0; ///< last frame
59  AVFrame *f1; ///< current frame
60  int64_t pts0; ///< last frame pts in dest_time_base
61  int64_t pts1; ///< current frame pts in dest_time_base
62  int64_t delta; ///< pts1 to pts0 delta
63  double score; ///< scene change score (f0 to f1)
64  int flush; ///< 1 if the filter is being flushed
65  int64_t start_pts; ///< pts of the first output frame
66  int64_t n; ///< output frame counter
67 
70 
73 
74 #endif /* AVFILTER_FRAMERATE_H */
void(* blend_func)(BLEND_FUNC_PARAMS)
Definition: framerate.h:34
void(* ff_scene_sad_fn)(SCENE_SAD_PARAMS)
Definition: scene_sad.h:34
This structure describes decoded (raw) audio or video data.
Definition: frame.h:295
double scene_score
score that denotes a scene change has happened
Definition: framerate.h:41
double score
scene change score (f0 to f1)
Definition: framerate.h:63
Main libavfilter public API header.
int64_t pts0
last frame pts in dest_time_base
Definition: framerate.h:60
int64_t pts1
current frame pts in dest_time_base
Definition: framerate.h:61
int interp_end
end of range to apply linear interpolation
Definition: framerate.h:43
blend_func blend
Definition: framerate.h:68
AVRational dest_frame_rate
output frames per second
Definition: framerate.h:39
int flags
flags affecting frame rate conversion algorithm
Definition: framerate.h:40
int line_size[4]
bytes of pixel data per line for each plane
Definition: framerate.h:45
Scene SAD functions.
int64_t n
output frame counter
Definition: framerate.h:66
int interp_start
start of range to apply linear interpolation
Definition: framerate.h:42
typedef void(APIENTRY *FF_PFNGLACTIVETEXTUREPROC)(GLenum texture)
double prev_mafd
previous MAFD (scene detect only)
Definition: framerate.h:52
#define s(width, name)
Definition: cbs_vp9.c:257
AVRational srce_time_base
timebase of source
Definition: framerate.h:48
void ff_framerate_init_x86(FrameRateContext *s)
int blend_factor_max
Definition: framerate.h:54
AVFrame * work
Definition: framerate.h:56
Describe the class of an AVClass context structure.
Definition: log.h:67
Rational number (pair of numerator and denominator).
Definition: rational.h:58
AVRational dest_time_base
timebase of destination
Definition: framerate.h:49
#define BLEND_FUNC_PARAMS
Definition: framerate.h:25
AVFrame * f0
last frame
Definition: framerate.h:58
ff_scene_sad_fn sad
Sum of the absolute difference function (scene detect only)
Definition: framerate.h:51
int64_t start_pts
pts of the first output frame
Definition: framerate.h:65
int flush
1 if the filter is being flushed
Definition: framerate.h:64
AVFrame * f1
current frame
Definition: framerate.h:59
void ff_framerate_init(FrameRateContext *s)
Definition: vf_framerate.c:276
int64_t delta
pts1 to pts0 delta
Definition: framerate.h:62