FFmpeg
yadif.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_YADIF_H
20 #define AVFILTER_YADIF_H
21 
22 #include "libavutil/opt.h"
23 #include "libavutil/pixdesc.h"
24 #include "avfilter.h"
25 
26 enum YADIFMode {
27  YADIF_MODE_SEND_FRAME = 0, ///< send 1 frame for each frame
28  YADIF_MODE_SEND_FIELD = 1, ///< send 1 frame for each field
29  YADIF_MODE_SEND_FRAME_NOSPATIAL = 2, ///< send 1 frame for each frame but skips spatial interlacing check
30  YADIF_MODE_SEND_FIELD_NOSPATIAL = 3, ///< send 1 frame for each field but skips spatial interlacing check
31 };
32 
34  YADIF_PARITY_TFF = 0, ///< top field first
35  YADIF_PARITY_BFF = 1, ///< bottom field first
36  YADIF_PARITY_AUTO = -1, ///< auto detection
37 };
38 
39 enum YADIFDeint {
40  YADIF_DEINT_ALL = 0, ///< deinterlace all frames
41  YADIF_DEINT_INTERLACED = 1, ///< only deinterlace frames marked as interlaced
42 };
43 
45  YADIF_FIELD_BACK_END = -1, ///< The last frame in a sequence
46  YADIF_FIELD_END = 0, ///< The first or last field in a sequence
47  YADIF_FIELD_NORMAL = 1, ///< A normal field in the middle of a sequence
48 };
49 
50 typedef struct YADIFContext {
51  const AVClass *class;
52 
53  int mode; ///< YADIFMode
54  int parity; ///< YADIFParity
55  int deint; ///< YADIFDeint
56 
58 
63 
64  void (*filter)(AVFilterContext *ctx, AVFrame *dstpic, int parity, int tff);
65 
66  /**
67  * Required alignment for filter_line
68  */
69  void (*filter_line)(void *dst,
70  void *prev, void *cur, void *next,
71  int w, int prefs, int mrefs, int parity, int mode);
72  void (*filter_edges)(void *dst, void *prev, void *cur, void *next,
73  int w, int prefs, int mrefs, int parity, int mode);
74 
76  int eof;
79 
80  /*
81  * An algorithm that treats first and/or last fields in a sequence
82  * differently can use this to detect those cases. It is the algorithm's
83  * responsibility to set the value to YADIF_FIELD_NORMAL after processing
84  * the first field.
85  */
86  int current_field; ///< YADIFCurrentField
87 } YADIFContext;
88 
89 void ff_yadif_init_x86(YADIFContext *yadif);
90 
92 
94 
95 extern const AVOption ff_yadif_options[];
96 
97 #endif /* AVFILTER_YADIF_H */
This structure describes decoded (raw) audio or video data.
Definition: frame.h:295
AVOption.
Definition: opt.h:246
Main libavfilter public API header.
void(* filter)(AVFilterContext *ctx, AVFrame *dstpic, int parity, int tff)
Definition: yadif.h:64
int ff_yadif_request_frame(AVFilterLink *link)
Definition: yadif_common.c:159
send 1 frame for each frame but skips spatial interlacing check
Definition: yadif.h:29
int frame_pending
Definition: yadif.h:57
uint8_t * temp_line
Definition: yadif.h:77
A normal field in the middle of a sequence.
Definition: yadif.h:47
void ff_yadif_init_x86(YADIFContext *yadif)
Definition: vf_yadif_init.c:60
int current_field
YADIFCurrentField.
Definition: yadif.h:86
AVFrame * cur
Definition: yadif.h:59
uint8_t
AVOptions.
AVFrame * next
Definition: yadif.h:60
bottom field first
Definition: yadif.h:35
YADIFCurrentField
Definition: yadif.h:44
send 1 frame for each field
Definition: yadif.h:28
AVFrame * prev
Definition: yadif.h:61
YADIFDeint
Definition: yadif.h:39
auto detection
Definition: yadif.h:36
int deint
YADIFDeint.
Definition: yadif.h:55
void(* filter_edges)(void *dst, void *prev, void *cur, void *next, int w, int prefs, int mrefs, int parity, int mode)
Definition: yadif.h:72
uint8_t w
Definition: llviddspenc.c:38
typedef void(APIENTRY *FF_PFNGLACTIVETEXTUREPROC)(GLenum texture)
YADIFParity
Definition: yadif.h:33
AVFormatContext * ctx
Definition: movenc.c:48
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several the filter must be ready for frames arriving randomly on any input any filter with several inputs will most likely require some kind of queuing mechanism It is perfectly acceptable to have a limited queue and to drop frames when the inputs are too unbalanced request_frame For filters that do not use the this method is called when a frame is wanted on an output For a it should directly call filter_frame on the corresponding output For a if there are queued frames already one of these frames should be pushed If the filter should request a frame on one of its repeatedly until at least one frame has been pushed Return or at least make progress towards producing a frame
int eof
Definition: yadif.h:76
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:81
AVFrame * out
Definition: yadif.h:62
Describe the class of an AVClass context structure.
Definition: log.h:67
int ff_yadif_filter_frame(AVFilterLink *link, AVFrame *frame)
Definition: yadif_common.c:92
The first or last field in a sequence.
Definition: yadif.h:46
int parity
YADIFParity.
Definition: yadif.h:54
send 1 frame for each field but skips spatial interlacing check
Definition: yadif.h:30
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a link
void(* filter_line)(void *dst, void *prev, void *cur, void *next, int w, int prefs, int mrefs, int parity, int mode)
Required alignment for filter_line.
Definition: yadif.h:69
YADIFMode
Definition: yadif.h:26
const AVPixFmtDescriptor * csp
Definition: yadif.h:75
const AVOption ff_yadif_options[]
Definition: yadif_common.c:198
deinterlace all frames
Definition: yadif.h:40
send 1 frame for each frame
Definition: yadif.h:27
An instance of a filter.
Definition: avfilter.h:338
int temp_line_size
Definition: yadif.h:78
only deinterlace frames marked as interlaced
Definition: yadif.h:41
The last frame in a sequence.
Definition: yadif.h:45
top field first
Definition: yadif.h:34
int mode
YADIFMode.
Definition: yadif.h:53