FFmpeg
vf_idet.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_IDET_H
20 #define AVFILTER_IDET_H
21 
22 #include "libavutil/pixdesc.h"
23 #include "avfilter.h"
24 
25 #define HIST_SIZE 4
26 
27 typedef int (*ff_idet_filter_func)(const uint8_t *a, const uint8_t *b, const uint8_t *c, int w);
28 
29 typedef enum {
30  TFF,
31  BFF,
34 } Type;
35 
36 typedef enum {
41 
42 typedef struct IDETContext {
43  const AVClass *class;
47  float half_life;
49 
51 
52  uint64_t repeats[3];
53  uint64_t prestat[4];
54  uint64_t poststat[4];
55  uint64_t total_repeats[3];
56  uint64_t total_prestat[4];
57  uint64_t total_poststat[4];
58 
59  uint8_t history[HIST_SIZE];
60 
65 
69 
71  int eof;
72 } IDETContext;
73 
74 void ff_idet_init_x86(IDETContext *idet, int for_16b);
75 
76 /* main fall-back for left-over */
77 int ff_idet_filter_line_c(const uint8_t *a, const uint8_t *b, const uint8_t *c, int w);
78 int ff_idet_filter_line_c_16bit(const uint16_t *a, const uint16_t *b, const uint16_t *c, int w);
79 
80 #endif
IDETContext::filter_line
ff_idet_filter_func filter_line
Definition: vf_idet.h:64
IDETContext::half_life
float half_life
Definition: vf_idet.h:47
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:303
pixdesc.h
w
uint8_t w
Definition: llviddspenc.c:38
b
#define b
Definition: input.c:40
REPEAT_NONE
@ REPEAT_NONE
Definition: vf_idet.h:37
REPEAT_BOTTOM
@ REPEAT_BOTTOM
Definition: vf_idet.h:39
IDETContext::analyze_interlaced_flag_done
int analyze_interlaced_flag_done
Definition: vf_idet.h:68
RepeatedField
RepeatedField
Definition: vf_idet.h:36
IDETContext
Definition: vf_idet.h:42
IDETContext::prestat
uint64_t prestat[4]
Definition: vf_idet.h:53
PROGRESSIVE
@ PROGRESSIVE
Definition: vf_idet.h:32
IDETContext::interlace_threshold
float interlace_threshold
Definition: vf_idet.h:44
IDETContext::prev
AVFrame * prev
Definition: vf_idet.h:63
BFF
@ BFF
Definition: vf_idet.h:31
IDETContext::next
AVFrame * next
Definition: vf_idet.h:62
REPEAT_TOP
@ REPEAT_TOP
Definition: vf_idet.h:38
IDETContext::repeat_threshold
float repeat_threshold
Definition: vf_idet.h:46
IDETContext::eof
int eof
Definition: vf_idet.h:71
IDETContext::csp
const AVPixFmtDescriptor * csp
Definition: vf_idet.h:70
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:66
IDETContext::total_poststat
uint64_t total_poststat[4]
Definition: vf_idet.h:57
c
Undefined Behavior In the C some operations are like signed integer dereferencing freed accessing outside allocated Undefined Behavior must not occur in a C it is not safe even if the output of undefined operations is unused The unsafety may seem nit picking but Optimizing compilers have in fact optimized code on the assumption that no undefined Behavior occurs Optimizing code based on wrong assumptions can and has in some cases lead to effects beyond the output of computations The signed integer overflow problem in speed critical code Code which is highly optimized and works with signed integers sometimes has the problem that often the output of the computation does not c
Definition: undefined.txt:32
IDETContext::interlaced_flag_accuracy
int interlaced_flag_accuracy
Definition: vf_idet.h:66
a
The reader does not expect b to be semantically here and if the code is changed by maybe adding a a division or other the signedness will almost certainly be mistaken To avoid this confusion a new type was SUINT is the C unsigned type but it holds a signed int to use the same example SUINT a
Definition: undefined.txt:41
ff_idet_filter_func
int(* ff_idet_filter_func)(const uint8_t *a, const uint8_t *b, const uint8_t *c, int w)
Definition: vf_idet.h:27
IDETContext::analyze_interlaced_flag
int analyze_interlaced_flag
Definition: vf_idet.h:67
HIST_SIZE
#define HIST_SIZE
Definition: vf_idet.h:25
Type
Type
Definition: vf_idet.h:29
ff_idet_filter_line_c
int ff_idet_filter_line_c(const uint8_t *a, const uint8_t *b, const uint8_t *c, int w)
Definition: vf_idet.c:86
IDETContext::cur
AVFrame * cur
Definition: vf_idet.h:61
IDETContext::poststat
uint64_t poststat[4]
Definition: vf_idet.h:54
IDETContext::total_prestat
uint64_t total_prestat[4]
Definition: vf_idet.h:56
UNDETERMINED
@ UNDETERMINED
Definition: vf_idet.h:33
IDETContext::total_repeats
uint64_t total_repeats[3]
Definition: vf_idet.h:55
IDETContext::history
uint8_t history[HIST_SIZE]
Definition: vf_idet.h:59
avfilter.h
IDETContext::repeats
uint64_t repeats[3]
Definition: vf_idet.h:52
AVPixFmtDescriptor
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:69
IDETContext::decay_coefficient
uint64_t decay_coefficient
Definition: vf_idet.h:48
IDETContext::progressive_threshold
float progressive_threshold
Definition: vf_idet.h:45
TFF
@ TFF
Definition: vf_idet.h:30
IDETContext::last_type
Type last_type
Definition: vf_idet.h:50
int
int
Definition: ffmpeg_filter.c:156
ff_idet_init_x86
void ff_idet_init_x86(IDETContext *idet, int for_16b)
Definition: vf_idet_init.c:68
ff_idet_filter_line_c_16bit
int ff_idet_filter_line_c_16bit(const uint16_t *a, const uint16_t *b, const uint16_t *c, int w)
Definition: vf_idet.c:99