FFmpeg
vf_kerndeint.c
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1 /*
2  * Copyright (c) 2012 Jeremy Tran
3  * Copyright (c) 2004 Tobias Diedrich
4  * Copyright (c) 2003 Donald A. Graft
5  *
6  * This file is part of FFmpeg.
7  *
8  * FFmpeg is free software; you can redistribute it and/or modify
9  * it under the terms of the GNU General Public License as published by
10  * the Free Software Foundation; either version 2 of the License, or
11  * (at your option) any later version.
12  *
13  * FFmpeg is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16  * GNU General Public License for more details.
17  *
18  * You should have received a copy of the GNU General Public License along
19  * with FFmpeg; if not, write to the Free Software Foundation, Inc.,
20  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
21  */
22 
23 /**
24  * @file
25  * Kernel Deinterlacer
26  * Ported from MPlayer libmpcodecs/vf_kerndeint.c.
27  */
28 
29 #include "libavutil/imgutils.h"
30 #include "libavutil/intreadwrite.h"
31 #include "libavutil/mem.h"
32 #include "libavutil/opt.h"
33 #include "libavutil/pixdesc.h"
34 
35 #include "avfilter.h"
36 #include "filters.h"
37 #include "video.h"
38 
39 typedef struct KerndeintContext {
40  const AVClass *class;
41  int frame; ///< frame count, starting from 0
42  int thresh, map, order, sharp, twoway;
43  int vsub;
44  int is_packed_rgb;
45  uint8_t *tmp_data [4]; ///< temporary plane data buffer
46  int tmp_linesize[4]; ///< temporary plane byte linesize
47  int tmp_bwidth [4]; ///< temporary plane byte width
48 } KerndeintContext;
49 
50 #define OFFSET(x) offsetof(KerndeintContext, x)
51 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
52 static const AVOption kerndeint_options[] = {
53  { "thresh", "set the threshold", OFFSET(thresh), AV_OPT_TYPE_INT, {.i64=10}, 0, 255, FLAGS },
54  { "map", "set the map", OFFSET(map), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS },
55  { "order", "set the order", OFFSET(order), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS },
56  { "sharp", "set sharpening", OFFSET(sharp), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS },
57  { "twoway", "set twoway", OFFSET(twoway), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS },
58  { NULL }
59 };
60 
61 AVFILTER_DEFINE_CLASS(kerndeint);
62 
63 static av_cold void uninit(AVFilterContext *ctx)
64 {
65  KerndeintContext *kerndeint = ctx->priv;
66 
67  av_freep(&kerndeint->tmp_data[0]);
68 }
69 
70 static const enum AVPixelFormat pix_fmts[] = {
71  AV_PIX_FMT_YUV420P,
72  AV_PIX_FMT_YUYV422,
73  AV_PIX_FMT_ARGB, AV_PIX_FMT_0RGB,
74  AV_PIX_FMT_ABGR, AV_PIX_FMT_0BGR,
75  AV_PIX_FMT_RGBA, AV_PIX_FMT_RGB0,
76  AV_PIX_FMT_BGRA, AV_PIX_FMT_BGR0,
77  AV_PIX_FMT_NONE
78 };
79 
80 static int config_props(AVFilterLink *inlink)
81 {
82  KerndeintContext *kerndeint = inlink->dst->priv;
83  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
84  int ret;
85 
86  kerndeint->is_packed_rgb = av_pix_fmt_desc_get(inlink->format)->flags & AV_PIX_FMT_FLAG_RGB;
87  kerndeint->vsub = desc->log2_chroma_h;
88 
89  ret = av_image_alloc(kerndeint->tmp_data, kerndeint->tmp_linesize,
90  inlink->w, inlink->h, inlink->format, 16);
91  if (ret < 0)
92  return ret;
93  memset(kerndeint->tmp_data[0], 0, ret);
94 
95  if ((ret = av_image_fill_linesizes(kerndeint->tmp_bwidth, inlink->format, inlink->w)) < 0)
96  return ret;
97 
98  return 0;
99 }
100 
101 static int filter_frame(AVFilterLink *inlink, AVFrame *inpic)
102 {
103  KerndeintContext *kerndeint = inlink->dst->priv;
104  AVFilterLink *outlink = inlink->dst->outputs[0];
105  AVFrame *outpic;
106  const uint8_t *prvp; ///< Previous field's pixel line number n
107  const uint8_t *prvpp; ///< Previous field's pixel line number (n - 1)
108  const uint8_t *prvpn; ///< Previous field's pixel line number (n + 1)
109  const uint8_t *prvppp; ///< Previous field's pixel line number (n - 2)
110  const uint8_t *prvpnn; ///< Previous field's pixel line number (n + 2)
111  const uint8_t *prvp4p; ///< Previous field's pixel line number (n - 4)
112  const uint8_t *prvp4n; ///< Previous field's pixel line number (n + 4)
113 
114  const uint8_t *srcp; ///< Current field's pixel line number n
115  const uint8_t *srcpp; ///< Current field's pixel line number (n - 1)
116  const uint8_t *srcpn; ///< Current field's pixel line number (n + 1)
117  const uint8_t *srcppp; ///< Current field's pixel line number (n - 2)
118  const uint8_t *srcpnn; ///< Current field's pixel line number (n + 2)
119  const uint8_t *srcp3p; ///< Current field's pixel line number (n - 3)
120  const uint8_t *srcp3n; ///< Current field's pixel line number (n + 3)
121  const uint8_t *srcp4p; ///< Current field's pixel line number (n - 4)
122  const uint8_t *srcp4n; ///< Current field's pixel line number (n + 4)
123 
124  uint8_t *dstp, *dstp_saved;
125  const uint8_t *srcp_saved;
126 
127  int src_linesize, psrc_linesize, dst_linesize, bwidth;
128  int x, y, plane, val, hi, lo, g, h, n = kerndeint->frame++;
129  double valf;
130 
131  const int thresh = kerndeint->thresh;
132  const int order = kerndeint->order;
133  const int map = kerndeint->map;
134  const int sharp = kerndeint->sharp;
135  const int twoway = kerndeint->twoway;
136 
137  const int is_packed_rgb = kerndeint->is_packed_rgb;
138 
139  outpic = ff_get_video_buffer(outlink, outlink->w, outlink->h);
140  if (!outpic) {
141  av_frame_free(&inpic);
142  return AVERROR(ENOMEM);
143  }
144  av_frame_copy_props(outpic, inpic);
145  outpic->flags &= ~AV_FRAME_FLAG_INTERLACED;
146 
147  for (plane = 0; plane < 4 && inpic->data[plane] && inpic->linesize[plane]; plane++) {
148  h = plane == 0 ? inlink->h : AV_CEIL_RSHIFT(inlink->h, kerndeint->vsub);
149  bwidth = kerndeint->tmp_bwidth[plane];
150 
151  srcp_saved = inpic->data[plane];
152  src_linesize = inpic->linesize[plane];
153  psrc_linesize = kerndeint->tmp_linesize[plane];
154  dstp_saved = outpic->data[plane];
155  dst_linesize = outpic->linesize[plane];
156  srcp = srcp_saved + (1 - order) * src_linesize;
157  dstp = dstp_saved + (1 - order) * dst_linesize;
158 
159  for (y = 0; y < h; y += 2) {
160  memcpy(dstp, srcp, bwidth);
161  srcp += 2 * src_linesize;
162  dstp += 2 * dst_linesize;
163  }
164 
165  // Copy through the lines that will be missed below.
166  memcpy(dstp_saved + order * dst_linesize, srcp_saved + (1 - order) * src_linesize, bwidth);
167  memcpy(dstp_saved + (2 + order ) * dst_linesize, srcp_saved + (3 - order) * src_linesize, bwidth);
168  memcpy(dstp_saved + (h - 2 + order) * dst_linesize, srcp_saved + (h - 1 - order) * src_linesize, bwidth);
169  memcpy(dstp_saved + (h - 4 + order) * dst_linesize, srcp_saved + (h - 3 - order) * src_linesize, bwidth);
170 
171  /* For the other field choose adaptively between using the previous field
172  or the interpolant from the current field. */
173  prvp = kerndeint->tmp_data[plane] + 5 * psrc_linesize - (1 - order) * psrc_linesize;
174  prvpp = prvp - psrc_linesize;
175  prvppp = prvp - 2 * psrc_linesize;
176  prvp4p = prvp - 4 * psrc_linesize;
177  prvpn = prvp + psrc_linesize;
178  prvpnn = prvp + 2 * psrc_linesize;
179  prvp4n = prvp + 4 * psrc_linesize;
180 
181  srcp = srcp_saved + 5 * src_linesize - (1 - order) * src_linesize;
182  srcpp = srcp - src_linesize;
183  srcppp = srcp - 2 * src_linesize;
184  srcp3p = srcp - 3 * src_linesize;
185  srcp4p = srcp - 4 * src_linesize;
186 
187  srcpn = srcp + src_linesize;
188  srcpnn = srcp + 2 * src_linesize;
189  srcp3n = srcp + 3 * src_linesize;
190  srcp4n = srcp + 4 * src_linesize;
191 
192  dstp = dstp_saved + 5 * dst_linesize - (1 - order) * dst_linesize;
193 
194  for (y = 5 - (1 - order); y <= h - 5 - (1 - order); y += 2) {
195  for (x = 0; x < bwidth; x++) {
196  if (thresh == 0 || n == 0 ||
197  (abs((int)prvp[x] - (int)srcp[x]) > thresh) ||
198  (abs((int)prvpp[x] - (int)srcpp[x]) > thresh) ||
199  (abs((int)prvpn[x] - (int)srcpn[x]) > thresh)) {
200  if (map) {
201  g = x & ~3;
202 
203  if (is_packed_rgb) {
204  AV_WB32(dstp + g, 0xffffffff);
205  x = g + 3;
206  } else if (inlink->format == AV_PIX_FMT_YUYV422) {
207  // y <- 235, u <- 128, y <- 235, v <- 128
208  AV_WB32(dstp + g, 0xeb80eb80);
209  x = g + 3;
210  } else {
211  dstp[x] = plane == 0 ? 235 : 128;
212  }
213  } else {
214  if (is_packed_rgb) {
215  hi = 255;
216  lo = 0;
217  } else if (inlink->format == AV_PIX_FMT_YUYV422) {
218  hi = x & 1 ? 240 : 235;
219  lo = 16;
220  } else {
221  hi = plane == 0 ? 235 : 240;
222  lo = 16;
223  }
224 
225  if (sharp) {
226  if (twoway) {
227  valf = + 0.526 * ((int)srcpp[x] + (int)srcpn[x])
228  + 0.170 * ((int)srcp[x] + (int)prvp[x])
229  - 0.116 * ((int)srcppp[x] + (int)srcpnn[x] + (int)prvppp[x] + (int)prvpnn[x])
230  - 0.026 * ((int)srcp3p[x] + (int)srcp3n[x])
231  + 0.031 * ((int)srcp4p[x] + (int)srcp4n[x] + (int)prvp4p[x] + (int)prvp4n[x]);
232  } else {
233  valf = + 0.526 * ((int)srcpp[x] + (int)srcpn[x])
234  + 0.170 * ((int)prvp[x])
235  - 0.116 * ((int)prvppp[x] + (int)prvpnn[x])
236  - 0.026 * ((int)srcp3p[x] + (int)srcp3n[x])
237  + 0.031 * ((int)prvp4p[x] + (int)prvp4p[x]);
238  }
239  dstp[x] = av_clip(valf, lo, hi);
240  } else {
241  if (twoway) {
242  val = (8 * ((int)srcpp[x] + (int)srcpn[x]) + 2 * ((int)srcp[x] + (int)prvp[x])
243  - (int)(srcppp[x]) - (int)(srcpnn[x])
244  - (int)(prvppp[x]) - (int)(prvpnn[x])) >> 4;
245  } else {
246  val = (8 * ((int)srcpp[x] + (int)srcpn[x]) + 2 * ((int)prvp[x])
247  - (int)(prvppp[x]) - (int)(prvpnn[x])) >> 4;
248  }
249  dstp[x] = av_clip(val, lo, hi);
250  }
251  }
252  } else {
253  dstp[x] = srcp[x];
254  }
255  }
256  prvp += 2 * psrc_linesize;
257  prvpp += 2 * psrc_linesize;
258  prvppp += 2 * psrc_linesize;
259  prvpn += 2 * psrc_linesize;
260  prvpnn += 2 * psrc_linesize;
261  prvp4p += 2 * psrc_linesize;
262  prvp4n += 2 * psrc_linesize;
263  srcp += 2 * src_linesize;
264  srcpp += 2 * src_linesize;
265  srcppp += 2 * src_linesize;
266  srcp3p += 2 * src_linesize;
267  srcp4p += 2 * src_linesize;
268  srcpn += 2 * src_linesize;
269  srcpnn += 2 * src_linesize;
270  srcp3n += 2 * src_linesize;
271  srcp4n += 2 * src_linesize;
272  dstp += 2 * dst_linesize;
273  }
274 
275  srcp = inpic->data[plane];
276  dstp = kerndeint->tmp_data[plane];
277  av_image_copy_plane(dstp, psrc_linesize, srcp, src_linesize, bwidth, h);
278  }
279 
280  av_frame_free(&inpic);
281  return ff_filter_frame(outlink, outpic);
282 }
283 
284 static const AVFilterPad kerndeint_inputs[] = {
285  {
286  .name = "default",
287  .type = AVMEDIA_TYPE_VIDEO,
288  .filter_frame = filter_frame,
289  .config_props = config_props,
290  },
291 };
292 
293 
294 const FFFilter ff_vf_kerndeint = {
295  .p.name = "kerndeint",
296  .p.description = NULL_IF_CONFIG_SMALL("Apply kernel deinterlacing to the input."),
297  .p.priv_class = &kerndeint_class,
298  .priv_size = sizeof(KerndeintContext),
299  .uninit = uninit,
300  FILTER_INPUTS(kerndeint_inputs),
301  FILTER_OUTPUTS(ff_video_default_filterpad),
302  FILTER_PIXFMTS_ARRAY(pix_fmts),
303 };
ff_get_video_buffer
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.
Definition: video.c:116
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:71
av_clip
#define av_clip
Definition: common.h:100
AVERROR
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 all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining all references to the list are updated That means that if a filter requires that its input and output have the same format amongst a supported all it has to do is use a reference to the same list of formats query_formats can leave some formats unset and return AVERROR(EAGAIN) to cause the negotiation mechanism toagain later. That can be used by filters with complex requirements to use the format negotiated on one link to set the formats supported on another. Frame references ownership and permissions
opt.h
FILTER_PIXFMTS_ARRAY
#define FILTER_PIXFMTS_ARRAY(array)
Definition: filters.h:242
uninit
static av_cold void uninit(AVFilterContext *ctx)
Definition: vf_kerndeint.c:63
ff_filter_frame
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1053
av_pix_fmt_desc_get
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:3341
inlink
The exact code depends on how similar the blocks are and how related they are to the and needs to apply these operations to the correct inlink or outlink if there are several Macros are available to factor that when no extra processing is inlink
Definition: filter_design.txt:212
av_frame_free
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:63
FILTER_INPUTS
#define FILTER_INPUTS(array)
Definition: filters.h:262
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:410
pixdesc.h
AVOption
AVOption.
Definition: opt.h:429
KerndeintContext::tmp_data
uint8_t * tmp_data[4]
temporary plane data buffer
Definition: vf_kerndeint.c:45
kerndeint_inputs
static const AVFilterPad kerndeint_inputs[]
Definition: vf_kerndeint.c:284
AV_PIX_FMT_BGRA
@ AV_PIX_FMT_BGRA
packed BGRA 8:8:8:8, 32bpp, BGRABGRA...
Definition: pixfmt.h:102
AVFrame::flags
int flags
Frame flags, a combination of AV_FRAME_FLAGS.
Definition: frame.h:654
AVFilter::name
const char * name
Filter name.
Definition: avfilter.h:203
video.h
AVFrame::data
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:431
av_image_copy_plane
void av_image_copy_plane(uint8_t *dst, int dst_linesize, const uint8_t *src, int src_linesize, int bytewidth, int height)
Copy image plane from src to dst.
Definition: imgutils.c:374
KerndeintContext
Definition: vf_kerndeint.c:39
val
static double val(void *priv, double ch)
Definition: aeval.c:77
KerndeintContext::twoway
int twoway
Definition: vf_kerndeint.c:42
AVFilterPad
A filter pad used for either input or output.
Definition: filters.h:38
av_cold
#define av_cold
Definition: attributes.h:90
ff_video_default_filterpad
const AVFilterPad ff_video_default_filterpad[1]
An AVFilterPad array whose only entry has name "default" and is of type AVMEDIA_TYPE_VIDEO.
Definition: video.c:37
FFFilter
Definition: filters.h:265
AVFILTER_DEFINE_CLASS
AVFILTER_DEFINE_CLASS(kerndeint)
config_props
static int config_props(AVFilterLink *inlink)
Definition: vf_kerndeint.c:80
av_image_fill_linesizes
int av_image_fill_linesizes(int linesizes[4], enum AVPixelFormat pix_fmt, int width)
Fill plane linesizes for an image with pixel format pix_fmt and width width.
Definition: imgutils.c:89
intreadwrite.h
AV_CEIL_RSHIFT
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:60
g
const char * g
Definition: vf_curves.c:128
filters.h
KerndeintContext::order
int order
Definition: vf_kerndeint.c:42
ctx
AVFormatContext * ctx
Definition: movenc.c:49
AV_PIX_FMT_YUV420P
@ AV_PIX_FMT_YUV420P
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:73
FILTER_OUTPUTS
#define FILTER_OUTPUTS(array)
Definition: filters.h:263
AV_PIX_FMT_RGBA
@ AV_PIX_FMT_RGBA
packed RGBA 8:8:8:8, 32bpp, RGBARGBA...
Definition: pixfmt.h:100
KerndeintContext::map
int map
Definition: vf_kerndeint.c:42
ff_vf_kerndeint
const FFFilter ff_vf_kerndeint
Definition: vf_kerndeint.c:294
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:75
NULL
#define NULL
Definition: coverity.c:32
av_frame_copy_props
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
Definition: frame.c:601
inpic
av_frame_free & inpic
Definition: vf_mcdeint.c:285
AV_PIX_FMT_YUYV422
@ AV_PIX_FMT_YUYV422
packed YUV 4:2:2, 16bpp, Y0 Cb Y1 Cr
Definition: pixfmt.h:74
pix_fmts
static enum AVPixelFormat pix_fmts[]
Definition: vf_kerndeint.c:70
AV_PIX_FMT_BGR0
@ AV_PIX_FMT_BGR0
packed BGR 8:8:8, 32bpp, BGRXBGRX... X=unused/undefined
Definition: pixfmt.h:265
abs
#define abs(x)
Definition: cuda_runtime.h:35
AVPixFmtDescriptor::flags
uint64_t flags
Combination of AV_PIX_FMT_FLAG_...
Definition: pixdesc.h:94
AV_PIX_FMT_ABGR
@ AV_PIX_FMT_ABGR
packed ABGR 8:8:8:8, 32bpp, ABGRABGR...
Definition: pixfmt.h:101
KerndeintContext::tmp_linesize
int tmp_linesize[4]
temporary plane byte linesize
Definition: vf_kerndeint.c:46
AV_WB32
#define AV_WB32(p, v)
Definition: intreadwrite.h:415
av_image_alloc
int av_image_alloc(uint8_t *pointers[4], int linesizes[4], int w, int h, enum AVPixelFormat pix_fmt, int align)
Allocate an image with size w and h and pixel format pix_fmt, and fill pointers and linesizes accordi...
Definition: imgutils.c:218
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition: internal.h:94
AV_PIX_FMT_FLAG_RGB
#define AV_PIX_FMT_FLAG_RGB
The pixel format contains RGB-like data (as opposed to YUV/grayscale).
Definition: pixdesc.h:136
KerndeintContext::is_packed_rgb
int is_packed_rgb
Definition: vf_kerndeint.c:44
AV_PIX_FMT_RGB0
@ AV_PIX_FMT_RGB0
packed RGB 8:8:8, 32bpp, RGBXRGBX... X=unused/undefined
Definition: pixfmt.h:263
filter_frame
static int filter_frame(AVFilterLink *inlink, AVFrame *inpic)
Definition: vf_kerndeint.c:101
AV_PIX_FMT_ARGB
@ AV_PIX_FMT_ARGB
packed ARGB 8:8:8:8, 32bpp, ARGBARGB...
Definition: pixfmt.h:99
FLAGS
#define FLAGS
Definition: vf_kerndeint.c:51
AVFilterPad::name
const char * name
Pad name.
Definition: filters.h:44
AV_FRAME_FLAG_INTERLACED
#define AV_FRAME_FLAG_INTERLACED
A flag to mark frames whose content is interlaced.
Definition: frame.h:633
ret
ret
Definition: filter_design.txt:187
AV_PIX_FMT_0BGR
@ AV_PIX_FMT_0BGR
packed BGR 8:8:8, 32bpp, XBGRXBGR... X=unused/undefined
Definition: pixfmt.h:264
KerndeintContext::frame
int frame
frame count, starting from 0
Definition: vf_kerndeint.c:41
KerndeintContext::tmp_bwidth
int tmp_bwidth[4]
temporary plane byte width
Definition: vf_kerndeint.c:47
KerndeintContext::thresh
int thresh
Definition: vf_kerndeint.c:42
AV_PIX_FMT_NONE
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:72
AV_OPT_TYPE_INT
@ AV_OPT_TYPE_INT
Underlying C type is int.
Definition: opt.h:259
avfilter.h
AVFilterContext
An instance of a filter.
Definition: avfilter.h:257
KerndeintContext::vsub
int vsub
Definition: vf_kerndeint.c:43
desc
const char * desc
Definition: libsvtav1.c:79
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
FFFilter::p
AVFilter p
The public AVFilter.
Definition: filters.h:269
mem.h
AVPixFmtDescriptor
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:69
map
const VDPAUPixFmtMap * map
Definition: hwcontext_vdpau.c:71
AV_OPT_TYPE_BOOL
@ AV_OPT_TYPE_BOOL
Underlying C type is int.
Definition: opt.h:327
av_freep
#define av_freep(p)
Definition: tableprint_vlc.h:35
OFFSET
#define OFFSET(x)
Definition: vf_kerndeint.c:50
kerndeint_options
static const AVOption kerndeint_options[]
Definition: vf_kerndeint.c:52
imgutils.h
AVFrame::linesize
int linesize[AV_NUM_DATA_POINTERS]
For video, a positive or negative value, which is typically indicating the size in bytes of each pict...
Definition: frame.h:455
AV_PIX_FMT_0RGB
@ AV_PIX_FMT_0RGB
packed RGB 8:8:8, 32bpp, XRGBXRGB... X=unused/undefined
Definition: pixfmt.h:262
KerndeintContext::sharp
int sharp
Definition: vf_kerndeint.c:42
h
h
Definition: vp9dsp_template.c:2070
Generated on Mon Apr 7 2025 19:22:32 for FFmpeg by   doxygen 1.8.17