FFmpeg  4.0
interlace.h
Go to the documentation of this file.
1 /*
2  * This file is part of FFmpeg.
3  *
4  * FFmpeg is free software; you can redistribute it and/or modify
5  * it under the terms of the GNU General Public License as published by
6  * the Free Software Foundation; either version 2 of the License, or
7  * (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
12  * GNU General Public License for more details.
13  *
14  * You should have received a copy of the GNU General Public License along
15  * with FFmpeg; if not, write to the Free Software Foundation, Inc.,
16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
17  */
18 
19 /**
20  * @file
21  * progressive to interlaced content filter, inspired by heavy debugging of
22  * tinterlace filter.
23  */
24 
25 #ifndef AVFILTER_INTERLACE_H
26 #define AVFILTER_INTERLACE_H
27 
28 #include "libavutil/bswap.h"
29 #include "libavutil/common.h"
30 #include "libavutil/imgutils.h"
31 #include "libavutil/opt.h"
32 #include "libavutil/pixdesc.h"
33 
34 #include "avfilter.h"
35 #include "formats.h"
36 #include "internal.h"
37 #include "video.h"
38 
39 enum ScanMode {
40  MODE_TFF = 0,
41  MODE_BFF = 1,
42 };
43 
44 enum FieldType {
47 };
48 
49 enum VLPFilter {
50  VLPF_OFF = 0,
51  VLPF_LIN = 1,
52  VLPF_CMP = 2,
53 };
54 
55 typedef struct InterlaceContext {
56  const AVClass *class;
57  enum ScanMode scan; // top or bottom field first scanning
58  int lowpass; // enable or disable low pass filtering
59  AVFrame *cur, *next; // the two frames from which the new one is obtained
61  void (*lowpass_line)(uint8_t *dstp, ptrdiff_t linesize, const uint8_t *srcp,
62  ptrdiff_t mref, ptrdiff_t pref, int clip_max);
64 
65 void ff_interlace_init(InterlaceContext *interlace, int depth);
66 void ff_interlace_init_x86(InterlaceContext *interlace, int depth);
67 
68 #endif /* AVFILTER_INTERLACE_H */
This structure describes decoded (raw) audio or video data.
Definition: frame.h:218
misc image utilities
Main libavfilter public API header.
BYTE int const BYTE * srcp
Definition: avisynth_c.h:813
uint8_t
AVOptions.
VLPFilter
Definition: interlace.h:49
ScanMode
Definition: interlace.h:39
FieldType
Definition: interlace.h:44
void(* lowpass_line)(uint8_t *dstp, ptrdiff_t linesize, const uint8_t *srcp, ptrdiff_t mref, ptrdiff_t pref, int clip_max)
Definition: interlace.h:61
BYTE * dstp
Definition: avisynth_c.h:813
AVFrame * next
Definition: interlace.h:59
void ff_interlace_init(InterlaceContext *interlace, int depth)
Definition: vf_interlace.c:188
typedef void(RENAME(mix_any_func_type))
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:81
Describe the class of an AVClass context structure.
Definition: log.h:67
byte swapping routines
void ff_interlace_init_x86(InterlaceContext *interlace, int depth)
AVFrame * cur
Definition: interlace.h:59
common internal and external API header
enum ScanMode scan
Definition: interlace.h:57
internal API functions
const AVPixFmtDescriptor * csp
Definition: interlace.h:60