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  if (AV_CEIL_RSHIFT(inlink->h, kerndeint->vsub) < 4) {
89  av_log(inlink->dst, AV_LOG_ERROR,
90  "Input height %d is too small; minimum chroma plane height is 4\n",
91  inlink->h);
92  return AVERROR(EINVAL);
93  }
94 
95  ret = av_image_alloc(kerndeint->tmp_data, kerndeint->tmp_linesize,
96  inlink->w, inlink->h, inlink->format, 16);
97  if (ret < 0)
98  return ret;
99  memset(kerndeint->tmp_data[0], 0, ret);
100 
101  if ((ret = av_image_fill_linesizes(kerndeint->tmp_bwidth, inlink->format, inlink->w)) < 0)
102  return ret;
103 
104  return 0;
105 }
106 
107 static int filter_frame(AVFilterLink *inlink, AVFrame *inpic)
108 {
109  KerndeintContext *kerndeint = inlink->dst->priv;
110  AVFilterLink *outlink = inlink->dst->outputs[0];
111  AVFrame *outpic;
112  const uint8_t *prvp; ///< Previous field's pixel line number n
113  const uint8_t *prvpp; ///< Previous field's pixel line number (n - 1)
114  const uint8_t *prvpn; ///< Previous field's pixel line number (n + 1)
115  const uint8_t *prvppp; ///< Previous field's pixel line number (n - 2)
116  const uint8_t *prvpnn; ///< Previous field's pixel line number (n + 2)
117  const uint8_t *prvp4p; ///< Previous field's pixel line number (n - 4)
118  const uint8_t *prvp4n; ///< Previous field's pixel line number (n + 4)
119 
120  const uint8_t *srcp; ///< Current field's pixel line number n
121  const uint8_t *srcpp; ///< Current field's pixel line number (n - 1)
122  const uint8_t *srcpn; ///< Current field's pixel line number (n + 1)
123  const uint8_t *srcppp; ///< Current field's pixel line number (n - 2)
124  const uint8_t *srcpnn; ///< Current field's pixel line number (n + 2)
125  const uint8_t *srcp3p; ///< Current field's pixel line number (n - 3)
126  const uint8_t *srcp3n; ///< Current field's pixel line number (n + 3)
127  const uint8_t *srcp4p; ///< Current field's pixel line number (n - 4)
128  const uint8_t *srcp4n; ///< Current field's pixel line number (n + 4)
129 
130  uint8_t *dstp, *dstp_saved;
131  const uint8_t *srcp_saved;
132 
133  int src_linesize, psrc_linesize, dst_linesize, bwidth;
134  int x, y, plane, val, hi, lo, g, h, n = kerndeint->frame++;
135  double valf;
136 
137  const int thresh = kerndeint->thresh;
138  const int order = kerndeint->order;
139  const int map = kerndeint->map;
140  const int sharp = kerndeint->sharp;
141  const int twoway = kerndeint->twoway;
142 
143  const int is_packed_rgb = kerndeint->is_packed_rgb;
144 
145  outpic = ff_get_video_buffer(outlink, outlink->w, outlink->h);
146  if (!outpic) {
147  av_frame_free(&inpic);
148  return AVERROR(ENOMEM);
149  }
150  av_frame_copy_props(outpic, inpic);
151  outpic->flags &= ~AV_FRAME_FLAG_INTERLACED;
152 
153  for (plane = 0; plane < 4 && inpic->data[plane] && inpic->linesize[plane]; plane++) {
154  h = plane == 0 ? inlink->h : AV_CEIL_RSHIFT(inlink->h, kerndeint->vsub);
155  bwidth = kerndeint->tmp_bwidth[plane];
156 
157  srcp_saved = inpic->data[plane];
158  src_linesize = inpic->linesize[plane];
159  psrc_linesize = kerndeint->tmp_linesize[plane];
160  dstp_saved = outpic->data[plane];
161  dst_linesize = outpic->linesize[plane];
162  srcp = srcp_saved + (1 - order) * src_linesize;
163  dstp = dstp_saved + (1 - order) * dst_linesize;
164 
165  for (y = 0; y < h; y += 2) {
166  memcpy(dstp, srcp, bwidth);
167  srcp += 2 * src_linesize;
168  dstp += 2 * dst_linesize;
169  }
170 
171  // Copy through the lines that will be missed below.
172  memcpy(dstp_saved + order * dst_linesize, srcp_saved + (1 - order) * src_linesize, bwidth);
173  memcpy(dstp_saved + (2 + order ) * dst_linesize, srcp_saved + (3 - order) * src_linesize, bwidth);
174  memcpy(dstp_saved + (h - 2 + order) * dst_linesize, srcp_saved + (h - 1 - order) * src_linesize, bwidth);
175  memcpy(dstp_saved + (h - 4 + order) * dst_linesize, srcp_saved + (h - 3 - order) * src_linesize, bwidth);
176 
177  /* For the other field choose adaptively between using the previous field
178  or the interpolant from the current field. */
179  prvp = kerndeint->tmp_data[plane] + 5 * psrc_linesize - (1 - order) * psrc_linesize;
180  prvpp = prvp - psrc_linesize;
181  prvppp = prvp - 2 * psrc_linesize;
182  prvp4p = prvp - 4 * psrc_linesize;
183  prvpn = prvp + psrc_linesize;
184  prvpnn = prvp + 2 * psrc_linesize;
185  prvp4n = prvp + 4 * psrc_linesize;
186 
187  srcp = srcp_saved + 5 * src_linesize - (1 - order) * src_linesize;
188  srcpp = srcp - src_linesize;
189  srcppp = srcp - 2 * src_linesize;
190  srcp3p = srcp - 3 * src_linesize;
191  srcp4p = srcp - 4 * src_linesize;
192 
193  srcpn = srcp + src_linesize;
194  srcpnn = srcp + 2 * src_linesize;
195  srcp3n = srcp + 3 * src_linesize;
196  srcp4n = srcp + 4 * src_linesize;
197 
198  dstp = dstp_saved + 5 * dst_linesize - (1 - order) * dst_linesize;
199 
200  for (y = 5 - (1 - order); y <= h - 5 - (1 - order); y += 2) {
201  for (x = 0; x < bwidth; x++) {
202  if (thresh == 0 || n == 0 ||
203  (abs((int)prvp[x] - (int)srcp[x]) > thresh) ||
204  (abs((int)prvpp[x] - (int)srcpp[x]) > thresh) ||
205  (abs((int)prvpn[x] - (int)srcpn[x]) > thresh)) {
206  if (map) {
207  g = x & ~3;
208 
209  if (is_packed_rgb) {
210  AV_WB32(dstp + g, 0xffffffff);
211  x = g + 3;
212  } else if (inlink->format == AV_PIX_FMT_YUYV422) {
213  // y <- 235, u <- 128, y <- 235, v <- 128
214  AV_WB32(dstp + g, 0xeb80eb80);
215  x = g + 3;
216  } else {
217  dstp[x] = plane == 0 ? 235 : 128;
218  }
219  } else {
220  if (is_packed_rgb) {
221  hi = 255;
222  lo = 0;
223  } else if (inlink->format == AV_PIX_FMT_YUYV422) {
224  hi = x & 1 ? 240 : 235;
225  lo = 16;
226  } else {
227  hi = plane == 0 ? 235 : 240;
228  lo = 16;
229  }
230 
231  if (sharp) {
232  if (twoway) {
233  valf = + 0.526 * ((int)srcpp[x] + (int)srcpn[x])
234  + 0.170 * ((int)srcp[x] + (int)prvp[x])
235  - 0.116 * ((int)srcppp[x] + (int)srcpnn[x] + (int)prvppp[x] + (int)prvpnn[x])
236  - 0.026 * ((int)srcp3p[x] + (int)srcp3n[x])
237  + 0.031 * ((int)srcp4p[x] + (int)srcp4n[x] + (int)prvp4p[x] + (int)prvp4n[x]);
238  } else {
239  valf = + 0.526 * ((int)srcpp[x] + (int)srcpn[x])
240  + 0.170 * ((int)prvp[x])
241  - 0.116 * ((int)prvppp[x] + (int)prvpnn[x])
242  - 0.026 * ((int)srcp3p[x] + (int)srcp3n[x])
243  + 0.031 * ((int)prvp4p[x] + (int)prvp4p[x]);
244  }
245  dstp[x] = av_clip(valf, lo, hi);
246  } else {
247  if (twoway) {
248  val = (8 * ((int)srcpp[x] + (int)srcpn[x]) + 2 * ((int)srcp[x] + (int)prvp[x])
249  - (int)(srcppp[x]) - (int)(srcpnn[x])
250  - (int)(prvppp[x]) - (int)(prvpnn[x])) >> 4;
251  } else {
252  val = (8 * ((int)srcpp[x] + (int)srcpn[x]) + 2 * ((int)prvp[x])
253  - (int)(prvppp[x]) - (int)(prvpnn[x])) >> 4;
254  }
255  dstp[x] = av_clip(val, lo, hi);
256  }
257  }
258  } else {
259  dstp[x] = srcp[x];
260  }
261  }
262  prvp += 2 * psrc_linesize;
263  prvpp += 2 * psrc_linesize;
264  prvppp += 2 * psrc_linesize;
265  prvpn += 2 * psrc_linesize;
266  prvpnn += 2 * psrc_linesize;
267  prvp4p += 2 * psrc_linesize;
268  prvp4n += 2 * psrc_linesize;
269  srcp += 2 * src_linesize;
270  srcpp += 2 * src_linesize;
271  srcppp += 2 * src_linesize;
272  srcp3p += 2 * src_linesize;
273  srcp4p += 2 * src_linesize;
274  srcpn += 2 * src_linesize;
275  srcpnn += 2 * src_linesize;
276  srcp3n += 2 * src_linesize;
277  srcp4n += 2 * src_linesize;
278  dstp += 2 * dst_linesize;
279  }
280 
281  srcp = inpic->data[plane];
282  dstp = kerndeint->tmp_data[plane];
283  av_image_copy_plane(dstp, psrc_linesize, srcp, src_linesize, bwidth, h);
284  }
285 
286  av_frame_free(&inpic);
287  return ff_filter_frame(outlink, outpic);
288 }
289 
290 static const AVFilterPad kerndeint_inputs[] = {
291  {
292  .name = "default",
293  .type = AVMEDIA_TYPE_VIDEO,
294  .filter_frame = filter_frame,
295  .config_props = config_props,
296  },
297 };
298 
299 
300 const FFFilter ff_vf_kerndeint = {
301  .p.name = "kerndeint",
302  .p.description = NULL_IF_CONFIG_SMALL("Apply kernel deinterlacing to the input."),
303  .p.priv_class = &kerndeint_class,
304  .priv_size = sizeof(KerndeintContext),
305  .uninit = uninit,
306  FILTER_INPUTS(kerndeint_inputs),
307  FILTER_OUTPUTS(ff_video_default_filterpad),
308  FILTER_PIXFMTS_ARRAY(pix_fmts),
309 };
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:89
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
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:1068
av_pix_fmt_desc_get
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:3456
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:64
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:459
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
filters.h
kerndeint_inputs
static const AVFilterPad kerndeint_inputs[]
Definition: vf_kerndeint.c:290
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:703
AVFilter::name
const char * name
Filter name.
Definition: avfilter.h:220
video.h
AVFrame::data
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:480
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
FILTER_PIXFMTS_ARRAY
#define FILTER_PIXFMTS_ARRAY(array)
Definition: filters.h:244
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:40
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:210
av_cold
#define av_cold
Definition: attributes.h:119
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:267
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
FILTER_OUTPUTS
#define FILTER_OUTPUTS(array)
Definition: filters.h:265
AV_CEIL_RSHIFT
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:60
g
const char * g
Definition: vf_curves.c:128
KerndeintContext::order
int order
Definition: vf_kerndeint.c:42
ctx
static 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
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:300
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:76
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:599
inpic
av_frame_free & inpic
Definition: vf_mcdeint.c:293
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:107
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:46
AV_FRAME_FLAG_INTERLACED
#define AV_FRAME_FLAG_INTERLACED
A flag to mark frames whose content is interlaced.
Definition: frame.h:682
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
FILTER_INPUTS
#define FILTER_INPUTS(array)
Definition: filters.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:274
KerndeintContext::vsub
int vsub
Definition: vf_kerndeint.c:43
desc
const char * desc
Definition: libsvtav1.c:83
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:200
FFFilter::p
AVFilter p
The public AVFilter.
Definition: filters.h:271
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:504
AV_PIX_FMT_0RGB
@ AV_PIX_FMT_0RGB
packed RGB 8:8:8, 32bpp, XRGBXRGB... X=unused/undefined
Definition: pixfmt.h:262
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:27
KerndeintContext::sharp
int sharp
Definition: vf_kerndeint.c:42
h
h
Definition: vp9dsp_template.c:2070
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