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/opt.h"
32 #include "libavutil/pixdesc.h"
33 
34 #include "avfilter.h"
35 #include "formats.h"
36 #include "internal.h"
37 
38 typedef struct KerndeintContext {
39  const AVClass *class;
40  int frame; ///< frame count, starting from 0
41  int thresh, map, order, sharp, twoway;
42  int vsub;
43  int is_packed_rgb;
44  uint8_t *tmp_data [4]; ///< temporary plane data buffer
45  int tmp_linesize[4]; ///< temporary plane byte linesize
46  int tmp_bwidth [4]; ///< temporary plane byte width
47 } KerndeintContext;
48 
49 #define OFFSET(x) offsetof(KerndeintContext, x)
50 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
51 static const AVOption kerndeint_options[] = {
52  { "thresh", "set the threshold", OFFSET(thresh), AV_OPT_TYPE_INT, {.i64=10}, 0, 255, FLAGS },
53  { "map", "set the map", OFFSET(map), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS },
54  { "order", "set the order", OFFSET(order), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS },
55  { "sharp", "set sharpening", OFFSET(sharp), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS },
56  { "twoway", "set twoway", OFFSET(twoway), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS },
57  { NULL }
58 };
59 
60 AVFILTER_DEFINE_CLASS(kerndeint);
61 
62 static av_cold void uninit(AVFilterContext *ctx)
63 {
64  KerndeintContext *kerndeint = ctx->priv;
65 
66  av_freep(&kerndeint->tmp_data[0]);
67 }
68 
69 static int query_formats(AVFilterContext *ctx)
70 {
71  static const enum AVPixelFormat pix_fmts[] = {
72  AV_PIX_FMT_YUV420P,
73  AV_PIX_FMT_YUYV422,
74  AV_PIX_FMT_ARGB, AV_PIX_FMT_0RGB,
75  AV_PIX_FMT_ABGR, AV_PIX_FMT_0BGR,
76  AV_PIX_FMT_RGBA, AV_PIX_FMT_RGB0,
77  AV_PIX_FMT_BGRA, AV_PIX_FMT_BGR0,
78  AV_PIX_FMT_NONE
79  };
80 
81  AVFilterFormats *fmts_list = ff_make_format_list(pix_fmts);
82  if (!fmts_list)
83  return AVERROR(ENOMEM);
84  return ff_set_common_formats(ctx, fmts_list);
85 }
86 
87 static int config_props(AVFilterLink *inlink)
88 {
89  KerndeintContext *kerndeint = inlink->dst->priv;
90  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
91  int ret;
92 
93  kerndeint->is_packed_rgb = av_pix_fmt_desc_get(inlink->format)->flags & AV_PIX_FMT_FLAG_RGB;
94  kerndeint->vsub = desc->log2_chroma_h;
95 
96  ret = av_image_alloc(kerndeint->tmp_data, kerndeint->tmp_linesize,
97  inlink->w, inlink->h, inlink->format, 16);
98  if (ret < 0)
99  return ret;
100  memset(kerndeint->tmp_data[0], 0, ret);
101 
102  if ((ret = av_image_fill_linesizes(kerndeint->tmp_bwidth, inlink->format, inlink->w)) < 0)
103  return ret;
104 
105  return 0;
106 }
107 
108 static int filter_frame(AVFilterLink *inlink, AVFrame *inpic)
109 {
110  KerndeintContext *kerndeint = inlink->dst->priv;
111  AVFilterLink *outlink = inlink->dst->outputs[0];
112  AVFrame *outpic;
113  const uint8_t *prvp; ///< Previous field's pixel line number n
114  const uint8_t *prvpp; ///< Previous field's pixel line number (n - 1)
115  const uint8_t *prvpn; ///< Previous field's pixel line number (n + 1)
116  const uint8_t *prvppp; ///< Previous field's pixel line number (n - 2)
117  const uint8_t *prvpnn; ///< Previous field's pixel line number (n + 2)
118  const uint8_t *prvp4p; ///< Previous field's pixel line number (n - 4)
119  const uint8_t *prvp4n; ///< Previous field's pixel line number (n + 4)
120 
121  const uint8_t *srcp; ///< Current field's pixel line number n
122  const uint8_t *srcpp; ///< Current field's pixel line number (n - 1)
123  const uint8_t *srcpn; ///< Current field's pixel line number (n + 1)
124  const uint8_t *srcppp; ///< Current field's pixel line number (n - 2)
125  const uint8_t *srcpnn; ///< Current field's pixel line number (n + 2)
126  const uint8_t *srcp3p; ///< Current field's pixel line number (n - 3)
127  const uint8_t *srcp3n; ///< Current field's pixel line number (n + 3)
128  const uint8_t *srcp4p; ///< Current field's pixel line number (n - 4)
129  const uint8_t *srcp4n; ///< Current field's pixel line number (n + 4)
130 
131  uint8_t *dstp, *dstp_saved;
132  const uint8_t *srcp_saved;
133 
134  int src_linesize, psrc_linesize, dst_linesize, bwidth;
135  int x, y, plane, val, hi, lo, g, h, n = kerndeint->frame++;
136  double valf;
137 
138  const int thresh = kerndeint->thresh;
139  const int order = kerndeint->order;
140  const int map = kerndeint->map;
141  const int sharp = kerndeint->sharp;
142  const int twoway = kerndeint->twoway;
143 
144  const int is_packed_rgb = kerndeint->is_packed_rgb;
145 
146  outpic = ff_get_video_buffer(outlink, outlink->w, outlink->h);
147  if (!outpic) {
148  av_frame_free(&inpic);
149  return AVERROR(ENOMEM);
150  }
151  av_frame_copy_props(outpic, inpic);
152  outpic->interlaced_frame = 0;
153 
154  for (plane = 0; plane < 4 && inpic->data[plane] && inpic->linesize[plane]; plane++) {
155  h = plane == 0 ? inlink->h : AV_CEIL_RSHIFT(inlink->h, kerndeint->vsub);
156  bwidth = kerndeint->tmp_bwidth[plane];
157 
158  srcp_saved = inpic->data[plane];
159  src_linesize = inpic->linesize[plane];
160  psrc_linesize = kerndeint->tmp_linesize[plane];
161  dstp_saved = outpic->data[plane];
162  dst_linesize = outpic->linesize[plane];
163  srcp = srcp_saved + (1 - order) * src_linesize;
164  dstp = dstp_saved + (1 - order) * dst_linesize;
165 
166  for (y = 0; y < h; y += 2) {
167  memcpy(dstp, srcp, bwidth);
168  srcp += 2 * src_linesize;
169  dstp += 2 * dst_linesize;
170  }
171 
172  // Copy through the lines that will be missed below.
173  memcpy(dstp_saved + order * dst_linesize, srcp_saved + (1 - order) * src_linesize, bwidth);
174  memcpy(dstp_saved + (2 + order ) * dst_linesize, srcp_saved + (3 - order) * src_linesize, bwidth);
175  memcpy(dstp_saved + (h - 2 + order) * dst_linesize, srcp_saved + (h - 1 - order) * src_linesize, bwidth);
176  memcpy(dstp_saved + (h - 4 + order) * dst_linesize, srcp_saved + (h - 3 - order) * src_linesize, bwidth);
177 
178  /* For the other field choose adaptively between using the previous field
179  or the interpolant from the current field. */
180  prvp = kerndeint->tmp_data[plane] + 5 * psrc_linesize - (1 - order) * psrc_linesize;
181  prvpp = prvp - psrc_linesize;
182  prvppp = prvp - 2 * psrc_linesize;
183  prvp4p = prvp - 4 * psrc_linesize;
184  prvpn = prvp + psrc_linesize;
185  prvpnn = prvp + 2 * psrc_linesize;
186  prvp4n = prvp + 4 * psrc_linesize;
187 
188  srcp = srcp_saved + 5 * src_linesize - (1 - order) * src_linesize;
189  srcpp = srcp - src_linesize;
190  srcppp = srcp - 2 * src_linesize;
191  srcp3p = srcp - 3 * src_linesize;
192  srcp4p = srcp - 4 * src_linesize;
193 
194  srcpn = srcp + src_linesize;
195  srcpnn = srcp + 2 * src_linesize;
196  srcp3n = srcp + 3 * src_linesize;
197  srcp4n = srcp + 4 * src_linesize;
198 
199  dstp = dstp_saved + 5 * dst_linesize - (1 - order) * dst_linesize;
200 
201  for (y = 5 - (1 - order); y <= h - 5 - (1 - order); y += 2) {
202  for (x = 0; x < bwidth; x++) {
203  if (thresh == 0 || n == 0 ||
204  (abs((int)prvp[x] - (int)srcp[x]) > thresh) ||
205  (abs((int)prvpp[x] - (int)srcpp[x]) > thresh) ||
206  (abs((int)prvpn[x] - (int)srcpn[x]) > thresh)) {
207  if (map) {
208  g = x & ~3;
209 
210  if (is_packed_rgb) {
211  AV_WB32(dstp + g, 0xffffffff);
212  x = g + 3;
213  } else if (inlink->format == AV_PIX_FMT_YUYV422) {
214  // y <- 235, u <- 128, y <- 235, v <- 128
215  AV_WB32(dstp + g, 0xeb80eb80);
216  x = g + 3;
217  } else {
218  dstp[x] = plane == 0 ? 235 : 128;
219  }
220  } else {
221  if (is_packed_rgb) {
222  hi = 255;
223  lo = 0;
224  } else if (inlink->format == AV_PIX_FMT_YUYV422) {
225  hi = x & 1 ? 240 : 235;
226  lo = 16;
227  } else {
228  hi = plane == 0 ? 235 : 240;
229  lo = 16;
230  }
231 
232  if (sharp) {
233  if (twoway) {
234  valf = + 0.526 * ((int)srcpp[x] + (int)srcpn[x])
235  + 0.170 * ((int)srcp[x] + (int)prvp[x])
236  - 0.116 * ((int)srcppp[x] + (int)srcpnn[x] + (int)prvppp[x] + (int)prvpnn[x])
237  - 0.026 * ((int)srcp3p[x] + (int)srcp3n[x])
238  + 0.031 * ((int)srcp4p[x] + (int)srcp4n[x] + (int)prvp4p[x] + (int)prvp4n[x]);
239  } else {
240  valf = + 0.526 * ((int)srcpp[x] + (int)srcpn[x])
241  + 0.170 * ((int)prvp[x])
242  - 0.116 * ((int)prvppp[x] + (int)prvpnn[x])
243  - 0.026 * ((int)srcp3p[x] + (int)srcp3n[x])
244  + 0.031 * ((int)prvp4p[x] + (int)prvp4p[x]);
245  }
246  dstp[x] = av_clip(valf, lo, hi);
247  } else {
248  if (twoway) {
249  val = (8 * ((int)srcpp[x] + (int)srcpn[x]) + 2 * ((int)srcp[x] + (int)prvp[x])
250  - (int)(srcppp[x]) - (int)(srcpnn[x])
251  - (int)(prvppp[x]) - (int)(prvpnn[x])) >> 4;
252  } else {
253  val = (8 * ((int)srcpp[x] + (int)srcpn[x]) + 2 * ((int)prvp[x])
254  - (int)(prvppp[x]) - (int)(prvpnn[x])) >> 4;
255  }
256  dstp[x] = av_clip(val, lo, hi);
257  }
258  }
259  } else {
260  dstp[x] = srcp[x];
261  }
262  }
263  prvp += 2 * psrc_linesize;
264  prvpp += 2 * psrc_linesize;
265  prvppp += 2 * psrc_linesize;
266  prvpn += 2 * psrc_linesize;
267  prvpnn += 2 * psrc_linesize;
268  prvp4p += 2 * psrc_linesize;
269  prvp4n += 2 * psrc_linesize;
270  srcp += 2 * src_linesize;
271  srcpp += 2 * src_linesize;
272  srcppp += 2 * src_linesize;
273  srcp3p += 2 * src_linesize;
274  srcp4p += 2 * src_linesize;
275  srcpn += 2 * src_linesize;
276  srcpnn += 2 * src_linesize;
277  srcp3n += 2 * src_linesize;
278  srcp4n += 2 * src_linesize;
279  dstp += 2 * dst_linesize;
280  }
281 
282  srcp = inpic->data[plane];
283  dstp = kerndeint->tmp_data[plane];
284  av_image_copy_plane(dstp, psrc_linesize, srcp, src_linesize, bwidth, h);
285  }
286 
287  av_frame_free(&inpic);
288  return ff_filter_frame(outlink, outpic);
289 }
290 
291 static const AVFilterPad kerndeint_inputs[] = {
292  {
293  .name = "default",
294  .type = AVMEDIA_TYPE_VIDEO,
295  .filter_frame = filter_frame,
296  .config_props = config_props,
297  },
298  { NULL }
299 };
300 
301 static const AVFilterPad kerndeint_outputs[] = {
302  {
303  .name = "default",
304  .type = AVMEDIA_TYPE_VIDEO,
305  },
306  { NULL }
307 };
308 
309 
310 AVFilter ff_vf_kerndeint = {
311  .name = "kerndeint",
312  .description = NULL_IF_CONFIG_SMALL("Apply kernel deinterlacing to the input."),
313  .priv_size = sizeof(KerndeintContext),
314  .priv_class = &kerndeint_class,
315  .uninit = uninit,
316  .query_formats = query_formats,
317  .inputs = kerndeint_inputs,
318  .outputs = kerndeint_outputs,
319 };
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:99
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
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
ff_make_format_list
AVFilterFormats * ff_make_format_list(const int *fmts)
Create a list of supported formats.
Definition: formats.c:283
uninit
static av_cold void uninit(AVFilterContext *ctx)
Definition: vf_kerndeint.c:62
n
int n
Definition: avisynth_c.h:760
ff_filter_frame
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1080
av_pix_fmt_desc_get
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2522
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:202
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:295
pixdesc.h
AVOption
AVOption.
Definition: opt.h:246
KerndeintContext::tmp_data
uint8_t * tmp_data[4]
temporary plane data buffer
Definition: vf_kerndeint.c:44
kerndeint_inputs
static const AVFilterPad kerndeint_inputs[]
Definition: vf_kerndeint.c:291
AV_PIX_FMT_BGRA
@ AV_PIX_FMT_BGRA
packed BGRA 8:8:8:8, 32bpp, BGRABGRA...
Definition: pixfmt.h:95
AVFilter::name
const char * name
Filter name.
Definition: avfilter.h:148
srcp
BYTE int const BYTE * srcp
Definition: avisynth_c.h:908
AVFrame::data
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:309
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:338
AVFilterFormats
A list of supported formats for one end of a filter link.
Definition: formats.h:64
formats.h
KerndeintContext
Definition: vf_kerndeint.c:38
dstp
BYTE * dstp
Definition: avisynth_c.h:908
plane
int plane
Definition: avisynth_c.h:384
KerndeintContext::twoway
int twoway
Definition: vf_kerndeint.c:41
AVFilterPad
A filter pad used for either input or output.
Definition: internal.h:54
av_cold
#define av_cold
Definition: attributes.h:84
ff_set_common_formats
int ff_set_common_formats(AVFilterContext *ctx, AVFilterFormats *formats)
A helper for query_formats() which sets all links to the same list of formats.
Definition: formats.c:568
AVFILTER_DEFINE_CLASS
AVFILTER_DEFINE_CLASS(kerndeint)
config_props
static int config_props(AVFilterLink *inlink)
Definition: vf_kerndeint.c:87
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:58
g
const char * g
Definition: vf_curves.c:115
outputs
static const AVFilterPad outputs[]
Definition: af_acontrast.c:203
KerndeintContext::order
int order
Definition: vf_kerndeint.c:41
pix_fmts
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:275
ctx
AVFormatContext * ctx
Definition: movenc.c:48
kerndeint_outputs
static const AVFilterPad kerndeint_outputs[]
Definition: vf_kerndeint.c:301
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:66
AV_PIX_FMT_RGBA
@ AV_PIX_FMT_RGBA
packed RGBA 8:8:8:8, 32bpp, RGBARGBA...
Definition: pixfmt.h:93
query_formats
static int query_formats(AVFilterContext *ctx)
Definition: vf_kerndeint.c:69
KerndeintContext::map
int map
Definition: vf_kerndeint.c:41
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:67
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:654
inpic
av_frame_free & inpic
Definition: vf_mcdeint.c:278
AV_PIX_FMT_YUYV422
@ AV_PIX_FMT_YUYV422
packed YUV 4:2:2, 16bpp, Y0 Cb Y1 Cr
Definition: pixfmt.h:67
AV_PIX_FMT_BGR0
@ AV_PIX_FMT_BGR0
packed BGR 8:8:8, 32bpp, BGRXBGRX... X=unused/undefined
Definition: pixfmt.h:240
abs
#define abs(x)
Definition: cuda_runtime.h:35
inputs
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 inputs
Definition: filter_design.txt:243
AVPixFmtDescriptor::flags
uint64_t flags
Combination of AV_PIX_FMT_FLAG_...
Definition: pixdesc.h:106
AV_PIX_FMT_ABGR
@ AV_PIX_FMT_ABGR
packed ABGR 8:8:8:8, 32bpp, ABGRABGR...
Definition: pixfmt.h:94
KerndeintContext::tmp_linesize
int tmp_linesize[4]
temporary plane byte linesize
Definition: vf_kerndeint.c:45
AV_WB32
#define AV_WB32(p, v)
Definition: intreadwrite.h:419
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:192
desc
const char * desc
Definition: nvenc.c:68
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:188
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:148
KerndeintContext::is_packed_rgb
int is_packed_rgb
Definition: vf_kerndeint.c:43
val
const char const char void * val
Definition: avisynth_c.h:863
AV_PIX_FMT_RGB0
@ AV_PIX_FMT_RGB0
packed RGB 8:8:8, 32bpp, RGBXRGBX... X=unused/undefined
Definition: pixfmt.h:238
filter_frame
static int filter_frame(AVFilterLink *inlink, AVFrame *inpic)
Definition: vf_kerndeint.c:108
internal.h
AV_PIX_FMT_ARGB
@ AV_PIX_FMT_ARGB
packed ARGB 8:8:8:8, 32bpp, ARGBARGB...
Definition: pixfmt.h:92
AVFrame::interlaced_frame
int interlaced_frame
The content of the picture is interlaced.
Definition: frame.h:442
uint8_t
uint8_t
Definition: audio_convert.c:194
FLAGS
#define FLAGS
Definition: vf_kerndeint.c:50
AVFilterPad::name
const char * name
Pad name.
Definition: internal.h:60
AVFilter
Filter definition.
Definition: avfilter.h:144
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:239
KerndeintContext::frame
int frame
frame count, starting from 0
Definition: vf_kerndeint.c:40
KerndeintContext::tmp_bwidth
int tmp_bwidth[4]
temporary plane byte width
Definition: vf_kerndeint.c:46
KerndeintContext::thresh
int thresh
Definition: vf_kerndeint.c:41
AV_PIX_FMT_NONE
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:65
AV_OPT_TYPE_INT
@ AV_OPT_TYPE_INT
Definition: opt.h:223
avfilter.h
AVFilterContext
An instance of a filter.
Definition: avfilter.h:338
KerndeintContext::vsub
int vsub
Definition: vf_kerndeint.c:42
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
AVPixFmtDescriptor
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:81
map
const VDPAUPixFmtMap * map
Definition: hwcontext_vdpau.c:85
AV_OPT_TYPE_BOOL
@ AV_OPT_TYPE_BOOL
Definition: opt.h:240
av_freep
#define av_freep(p)
Definition: tableprint_vlc.h:35
OFFSET
#define OFFSET(x)
Definition: vf_kerndeint.c:49
kerndeint_options
static const AVOption kerndeint_options[]
Definition: vf_kerndeint.c:51
imgutils.h
AVFrame::linesize
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:326
AV_PIX_FMT_0RGB
@ AV_PIX_FMT_0RGB
packed RGB 8:8:8, 32bpp, XRGBXRGB... X=unused/undefined
Definition: pixfmt.h:237
KerndeintContext::sharp
int sharp
Definition: vf_kerndeint.c:41
h
h
Definition: vp9dsp_template.c:2038
int
int
Definition: ffmpeg_filter.c:191
ff_vf_kerndeint
AVFilter ff_vf_kerndeint
Definition: vf_kerndeint.c:310
Generated on Wed Aug 24 2022 21:27:14 for FFmpeg by   doxygen 1.8.17