FFmpeg
vf_lenscorrection.c
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1 /*
2  * Copyright (C) 2007 Richard Spindler (author of frei0r plugin from which this was derived)
3  * Copyright (C) 2014 Daniel Oberhoff
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
22 /**
23  * @file
24  * Lenscorrection filter, algorithm from the frei0r plugin with the same name
25 */
26 #include <stdlib.h>
27 #include <math.h>
28 
29 #include "libavutil/colorspace.h"
30 #include "libavutil/opt.h"
31 #include "libavutil/intreadwrite.h"
32 #include "libavutil/pixdesc.h"
33 
34 #include "avfilter.h"
35 #include "drawutils.h"
36 #include "internal.h"
37 #include "video.h"
38 
39 typedef struct LenscorrectionCtx {
40  const AVClass *av_class;
41  int planewidth[4];
42  int planeheight[4];
43  int depth;
44  int nb_planes;
45  double cx, cy, k1, k2;
47  uint8_t fill_rgba[4];
48  int fill_color[4];
49 
51 
52  int (*filter_slice)(AVFilterContext *ctx, void *arg, int job, int nb_jobs, int plane);
54 
55 #define OFFSET(x) offsetof(LenscorrectionCtx, x)
56 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
57 static const AVOption lenscorrection_options[] = {
58  { "cx", "set relative center x", OFFSET(cx), AV_OPT_TYPE_DOUBLE, {.dbl=0.5}, 0, 1, .flags=FLAGS },
59  { "cy", "set relative center y", OFFSET(cy), AV_OPT_TYPE_DOUBLE, {.dbl=0.5}, 0, 1, .flags=FLAGS },
60  { "k1", "set quadratic distortion factor", OFFSET(k1), AV_OPT_TYPE_DOUBLE, {.dbl=0.0}, -1, 1, .flags=FLAGS },
61  { "k2", "set double quadratic distortion factor", OFFSET(k2), AV_OPT_TYPE_DOUBLE, {.dbl=0.0}, -1, 1, .flags=FLAGS },
62  { "i", "set interpolation type", OFFSET(interpolation), AV_OPT_TYPE_INT, {.i64=0}, 0, 64, .flags=FLAGS, "i" },
63  { "nearest", "nearest neighbour", 0, AV_OPT_TYPE_CONST, {.i64=0},0, 0, .flags=FLAGS, "i" },
64  { "bilinear", "bilinear", 0, AV_OPT_TYPE_CONST, {.i64=1},0, 0, .flags=FLAGS, "i" },
65  { "fc", "set the color of the unmapped pixels", OFFSET(fill_rgba), AV_OPT_TYPE_COLOR, {.str="black@0"}, .flags = FLAGS },
66  { NULL }
67 };
68 
69 AVFILTER_DEFINE_CLASS(lenscorrection);
70 
71 typedef struct ThreadData {
72  AVFrame *in, *out;
73 } ThreadData;
74 
75 #define NEAREST(type, name) \
76 static int filter##name##_slice(AVFilterContext *ctx, void *arg, int job, \
77  int nb_jobs, int plane) \
78 { \
79  LenscorrectionCtx *rect = ctx->priv; \
80  ThreadData *td = arg; \
81  AVFrame *in = td->in; \
82  AVFrame *out = td->out; \
83  \
84  const int32_t *correction = rect->correction[plane]; \
85  const int fill_color = rect->fill_color[plane]; \
86  const int w = rect->planewidth[plane], h = rect->planeheight[plane]; \
87  const int xcenter = rect->cx * w; \
88  const int ycenter = rect->cy * h; \
89  const int start = (h * job ) / nb_jobs; \
90  const int end = (h * (job+1)) / nb_jobs; \
91  const int inlinesize = in->linesize[plane] / sizeof(type); \
92  const int outlinesize = out->linesize[plane] / sizeof(type); \
93  const type *indata = (const type *)in->data[plane]; \
94  type *outrow = (type *)out->data[plane] + start * outlinesize; \
95  for (int i = start; i < end; i++, outrow += outlinesize) { \
96  const int off_y = i - ycenter; \
97  type *out = outrow; \
98  for (int j = 0; j < w; j++) { \
99  const int off_x = j - xcenter; \
100  const int64_t radius_mult = correction[j + i*w]; \
101  const int x = xcenter + ((radius_mult * off_x + (1<<23))>>24); \
102  const int y = ycenter + ((radius_mult * off_y + (1<<23))>>24); \
103  const char isvalid = x >= 0 && x < w && y >= 0 && y < h; \
104  *out++ = isvalid ? indata[y * inlinesize + x] : fill_color; \
105  } \
106  } \
107  return 0; \
108 }
109 
110 
111 NEAREST(uint8_t, 8)
112 NEAREST(uint16_t, 16)
113 
114 #define BILINEAR(type, name) \
115 static int filter##name##_slice_bilinear(AVFilterContext *ctx, void *arg, \
116  int job, int nb_jobs, int plane) \
117 { \
118  LenscorrectionCtx *rect = ctx->priv; \
119  ThreadData *td = arg; \
120  AVFrame *in = td->in; \
121  AVFrame *out = td->out; \
122  \
123  const int32_t *correction = rect->correction[plane]; \
124  const int fill_color = rect->fill_color[plane]; \
125  const int depth = rect->depth; \
126  const uint64_t max = (1 << 24) - 1; \
127  const uint64_t add = (1 << 23); \
128  const int w = rect->planewidth[plane], h = rect->planeheight[plane]; \
129  const int xcenter = rect->cx * w; \
130  const int ycenter = rect->cy * h; \
131  const int start = (h * job ) / nb_jobs; \
132  const int end = (h * (job+1)) / nb_jobs; \
133  const int inlinesize = in->linesize[plane] / sizeof(type); \
134  const int outlinesize = out->linesize[plane] / sizeof(type); \
135  const type *indata = (const type *)in->data[plane]; \
136  type *outrow = (type *)out->data[plane] + start * outlinesize; \
137  \
138  for (int i = start; i < end; i++, outrow += outlinesize) { \
139  const int off_y = i - ycenter; \
140  type *out = outrow; \
141  \
142  for (int j = 0; j < w; j++) { \
143  const int off_x = j - xcenter; \
144  const int64_t radius_mult = correction[j + i*w]; \
145  const int x = xcenter + ((radius_mult * off_x + (1<<23)) >> 24); \
146  const int y = ycenter + ((radius_mult * off_y + (1<<23)) >> 24); \
147  const char isvalid = x >= 0 && x <= w - 1 && y >= 0 && y <= h - 1; \
148  \
149  if (isvalid) { \
150  const int nx = FFMIN(x + 1, w - 1); \
151  const int ny = FFMIN(y + 1, h - 1); \
152  const uint64_t du = off_x >= 0 ? (radius_mult * off_x + add) & max : max - ((radius_mult * -off_x + add) & max); \
153  const uint64_t dv = off_y >= 0 ? (radius_mult * off_y + add) & max : max - ((radius_mult * -off_y + add) & max); \
154  const uint64_t p0 = indata[ y * inlinesize + x]; \
155  const uint64_t p1 = indata[ y * inlinesize + nx]; \
156  const uint64_t p2 = indata[ny * inlinesize + x]; \
157  const uint64_t p3 = indata[ny * inlinesize + nx]; \
158  uint64_t sum = 0; \
159  \
160  sum += (max - du) * (max - dv) * p0; \
161  sum += ( du) * (max - dv) * p1; \
162  sum += (max - du) * ( dv) * p2; \
163  sum += ( du) * ( dv) * p3; \
164  \
165  out[j] = av_clip_uintp2_c((sum + (1ULL << 47)) >> 48, depth); \
166  } else { \
167  out[j] = fill_color; \
168  } \
169  } \
170  } \
171  \
172  return 0; \
173 }
174 
175 BILINEAR(uint8_t, 8)
176 BILINEAR(uint16_t, 16)
177 
179 {
180  static const enum AVPixelFormat pix_fmts[] = {
205  };
207  if (!fmts_list)
208  return AVERROR(ENOMEM);
209  return ff_set_common_formats(ctx, fmts_list);
210 }
211 
213 {
214  LenscorrectionCtx *rect = ctx->priv;
215  int i;
216 
217  for (i = 0; i < FF_ARRAY_ELEMS(rect->correction); i++) {
218  av_freep(&rect->correction[i]);
219  }
220 }
221 
222 static void calc_correction(AVFilterContext *ctx, int plane)
223 {
224  LenscorrectionCtx *rect = ctx->priv;
225  int w = rect->planewidth[plane];
226  int h = rect->planeheight[plane];
227  int xcenter = rect->cx * w;
228  int ycenter = rect->cy * h;
229  int k1 = rect->k1 * (1<<24);
230  int k2 = rect->k2 * (1<<24);
231  const int64_t r2inv = (4LL<<60) / (w * w + h * h);
232 
233  for (int j = 0; j < h; j++) {
234  const int off_y = j - ycenter;
235  const int off_y2 = off_y * off_y;
236  for (int i = 0; i < w; i++) {
237  const int off_x = i - xcenter;
238  const int64_t r2 = ((off_x * off_x + off_y2) * r2inv + (1LL<<31)) >> 32;
239  const int64_t r4 = (r2 * r2 + (1<<27)) >> 28;
240  const int radius_mult = (r2 * k1 + r4 * k2 + (1LL<<27) + (1LL<<52))>>28;
241  rect->correction[plane][j * w + i] = radius_mult;
242  }
243  }
244 }
245 
246 static int config_output(AVFilterLink *outlink)
247 {
248  AVFilterContext *ctx = outlink->src;
249  LenscorrectionCtx *rect = ctx->priv;
250  AVFilterLink *inlink = ctx->inputs[0];
251  const AVPixFmtDescriptor *pixdesc = av_pix_fmt_desc_get(inlink->format);
252  int is_rgb = !!(pixdesc->flags & AV_PIX_FMT_FLAG_RGB);
253  uint8_t rgba_map[4];
254  int factor;
255 
256  ff_fill_rgba_map(rgba_map, inlink->format);
257  rect->depth = pixdesc->comp[0].depth;
258  factor = 1 << (rect->depth - 8);
259  rect->planeheight[1] = rect->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, pixdesc->log2_chroma_h);
260  rect->planeheight[0] = rect->planeheight[3] = inlink->h;
261  rect->planewidth[1] = rect->planewidth[2] = AV_CEIL_RSHIFT(inlink->w, pixdesc->log2_chroma_w);
262  rect->planewidth[0] = rect->planewidth[3] = inlink->w;
263  rect->nb_planes = av_pix_fmt_count_planes(inlink->format);
264  rect->filter_slice = rect->depth <= 8 ? filter8_slice : filter16_slice;
265  if (rect->interpolation)
266  rect->filter_slice = rect->depth <= 8 ? filter8_slice_bilinear : filter16_slice_bilinear;
267 
268  if (is_rgb) {
269  rect->fill_color[rgba_map[0]] = rect->fill_rgba[0] * factor;
270  rect->fill_color[rgba_map[1]] = rect->fill_rgba[1] * factor;
271  rect->fill_color[rgba_map[2]] = rect->fill_rgba[2] * factor;
272  rect->fill_color[rgba_map[3]] = rect->fill_rgba[3] * factor;
273  } else {
274  rect->fill_color[0] = RGB_TO_Y_BT709(rect->fill_rgba[0], rect->fill_rgba[1], rect->fill_rgba[2]) * factor;
275  rect->fill_color[1] = RGB_TO_U_BT709(rect->fill_rgba[0], rect->fill_rgba[1], rect->fill_rgba[2], 0) * factor;
276  rect->fill_color[2] = RGB_TO_V_BT709(rect->fill_rgba[0], rect->fill_rgba[1], rect->fill_rgba[2], 0) * factor;
277  rect->fill_color[3] = rect->fill_rgba[3] * factor;
278  }
279 
280  for (int plane = 0; plane < rect->nb_planes; plane++) {
281  int w = rect->planewidth[plane];
282  int h = rect->planeheight[plane];
283 
284  if (!rect->correction[plane])
285  rect->correction[plane] = av_malloc_array(w, h * sizeof(**rect->correction));
286  if (!rect->correction[plane])
287  return AVERROR(ENOMEM);
288  calc_correction(ctx, plane);
289  }
290 
291  return 0;
292 }
293 
294 static int filter_slice(AVFilterContext *ctx, void *arg, int job,
295  int nb_jobs)
296 {
297  LenscorrectionCtx *rect = ctx->priv;
298 
299  for (int plane = 0; plane < rect->nb_planes; plane++)
300  rect->filter_slice(ctx, arg, job, nb_jobs, plane);
301 
302  return 0;
303 }
304 
306 {
307  AVFilterContext *ctx = inlink->dst;
308  AVFilterLink *outlink = ctx->outputs[0];
309  LenscorrectionCtx *rect = ctx->priv;
310  AVFrame *out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
311  ThreadData td;
312 
313  if (!out) {
314  av_frame_free(&in);
315  return AVERROR(ENOMEM);
316  }
317 
319 
320  td.in = in; td.out = out;
321  ctx->internal->execute(ctx, filter_slice, &td, NULL, FFMIN(rect->planeheight[1], ff_filter_get_nb_threads(ctx)));
322 
323  av_frame_free(&in);
324  return ff_filter_frame(outlink, out);
325 }
326 
328  const char *cmd,
329  const char *arg,
330  char *res,
331  int res_len,
332  int flags)
333 {
334  int ret = ff_filter_process_command(ctx, cmd, arg, res, res_len, flags);
335 
336  if (ret < 0)
337  return ret;
338 
339  return config_output(ctx->outputs[0]);
340 }
341 
343  {
344  .name = "default",
345  .type = AVMEDIA_TYPE_VIDEO,
346  .filter_frame = filter_frame,
347  },
348  { NULL }
349 };
350 
352  {
353  .name = "default",
354  .type = AVMEDIA_TYPE_VIDEO,
355  .config_props = config_output,
356  },
357  { NULL }
358 };
359 
361  .name = "lenscorrection",
362  .description = NULL_IF_CONFIG_SMALL("Rectify the image by correcting for lens distortion."),
363  .priv_size = sizeof(LenscorrectionCtx),
367  .priv_class = &lenscorrection_class,
368  .uninit = uninit,
371 };
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:97
AV_PIX_FMT_YUVA422P16
#define AV_PIX_FMT_YUVA422P16
Definition: pixfmt.h:432
LenscorrectionCtx::fill_color
int fill_color[4]
Definition: vf_lenscorrection.c:48
AV_PIX_FMT_GBRAP16
#define AV_PIX_FMT_GBRAP16
Definition: pixfmt.h:411
td
#define td
Definition: regdef.h:70
uninit
static av_cold void uninit(AVFilterContext *ctx)
Definition: vf_lenscorrection.c:212
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
query_formats
static int query_formats(AVFilterContext *ctx)
Definition: vf_lenscorrection.c:178
ff_make_format_list
AVFilterFormats * ff_make_format_list(const int *fmts)
Create a list of supported formats.
Definition: formats.c:286
out
FILE * out
Definition: movenc.c:54
ff_filter_frame
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:978
LenscorrectionCtx::cy
double cy
Definition: vf_lenscorrection.c:45
av_pix_fmt_desc_get
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2540
calc_correction
static void calc_correction(AVFilterContext *ctx, int plane)
Definition: vf_lenscorrection.c:222
rect
Definition: f_ebur128.c:77
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:112
AV_PIX_FMT_YUVA422P9
#define AV_PIX_FMT_YUVA422P9
Definition: pixfmt.h:424
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:303
pixdesc.h
AV_PIX_FMT_YUVA420P16
#define AV_PIX_FMT_YUVA420P16
Definition: pixfmt.h:431
w
uint8_t w
Definition: llviddspenc.c:38
AVComponentDescriptor::depth
int depth
Number of bits in the component.
Definition: pixdesc.h:57
AV_PIX_FMT_YUVA420P10
#define AV_PIX_FMT_YUVA420P10
Definition: pixfmt.h:426
AVOption
AVOption.
Definition: opt.h:247
NEAREST
#define NEAREST(type, name)
Definition: vf_lenscorrection.c:75
AV_PIX_FMT_YUV420P10
#define AV_PIX_FMT_YUV420P10
Definition: pixfmt.h:389
AV_PIX_FMT_YUV440P
@ AV_PIX_FMT_YUV440P
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
Definition: pixfmt.h:99
AVFilter::name
const char * name
Filter name.
Definition: avfilter.h:149
ThreadData::out
AVFrame * out
Definition: af_adeclick.c:502
video.h
AVFormatContext::internal
AVFormatInternal * internal
An opaque field for libavformat internal usage.
Definition: avformat.h:1565
AV_PIX_FMT_YUVA422P10
#define AV_PIX_FMT_YUVA422P10
Definition: pixfmt.h:427
AV_PIX_FMT_GRAY9
#define AV_PIX_FMT_GRAY9
Definition: pixfmt.h:369
AVFilterFormats
A list of supported formats for one end of a filter link.
Definition: formats.h:64
AVFILTER_DEFINE_CLASS
AVFILTER_DEFINE_CLASS(lenscorrection)
av_pix_fmt_count_planes
int av_pix_fmt_count_planes(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2580
LenscorrectionCtx::correction
int32_t * correction[4]
Definition: vf_lenscorrection.c:50
AV_PIX_FMT_YUVA420P9
#define AV_PIX_FMT_YUVA420P9
Definition: pixfmt.h:423
AV_PIX_FMT_GBRP14
#define AV_PIX_FMT_GBRP14
Definition: pixfmt.h:407
AV_PIX_FMT_GBRAP
@ AV_PIX_FMT_GBRAP
planar GBRA 4:4:4:4 32bpp
Definition: pixfmt.h:205
LenscorrectionCtx::planewidth
int planewidth[4]
Definition: vf_lenscorrection.c:41
AV_PIX_FMT_GBRP10
#define AV_PIX_FMT_GBRP10
Definition: pixfmt.h:405
AV_PIX_FMT_YUVA444P16
#define AV_PIX_FMT_YUVA444P16
Definition: pixfmt.h:433
LenscorrectionCtx::nb_planes
int nb_planes
Definition: vf_lenscorrection.c:44
AV_PIX_FMT_YUV422P9
#define AV_PIX_FMT_YUV422P9
Definition: pixfmt.h:387
AV_PIX_FMT_GRAY16
#define AV_PIX_FMT_GRAY16
Definition: pixfmt.h:373
LenscorrectionCtx::depth
int depth
Definition: vf_lenscorrection.c:43
AVFilterPad
A filter pad used for either input or output.
Definition: internal.h:54
AV_PIX_FMT_YUV444P10
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:392
AV_PIX_FMT_YUVJ411P
@ AV_PIX_FMT_YUVJ411P
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples) full scale (JPEG), deprecated in favor ...
Definition: pixfmt.h:248
colorspace.h
FF_ARRAY_ELEMS
#define FF_ARRAY_ELEMS(a)
Definition: sinewin_tablegen.c:29
av_cold
#define av_cold
Definition: attributes.h:90
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
AV_PIX_FMT_YUV422P16
#define AV_PIX_FMT_YUV422P16
Definition: pixfmt.h:401
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:580
LenscorrectionCtx::fill_rgba
uint8_t fill_rgba[4]
Definition: vf_lenscorrection.c:47
AV_PIX_FMT_YUVJ422P
@ AV_PIX_FMT_YUVJ422P
planar YUV 4:2:2, 16bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV422P and setting col...
Definition: pixfmt.h:79
AV_PIX_FMT_GBRAP10
#define AV_PIX_FMT_GBRAP10
Definition: pixfmt.h:409
RGB_TO_Y_BT709
#define RGB_TO_Y_BT709(r, g, b)
Definition: vf_pseudocolor.c:561
intreadwrite.h
AV_PIX_FMT_GBRAP12
#define AV_PIX_FMT_GBRAP12
Definition: pixfmt.h:410
AV_PIX_FMT_YUVA420P
@ AV_PIX_FMT_YUVA420P
planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
Definition: pixfmt.h:101
AV_PIX_FMT_YUV444P16
#define AV_PIX_FMT_YUV444P16
Definition: pixfmt.h:402
AV_CEIL_RSHIFT
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:51
RGB_TO_U_BT709
#define RGB_TO_U_BT709(r1, g1, b1, max)
Definition: vf_pseudocolor.c:565
AV_OPT_TYPE_DOUBLE
@ AV_OPT_TYPE_DOUBLE
Definition: opt.h:226
outputs
static const AVFilterPad outputs[]
Definition: af_acontrast.c:203
pix_fmts
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:290
AV_PIX_FMT_YUVA444P12
#define AV_PIX_FMT_YUVA444P12
Definition: pixfmt.h:430
AV_PIX_FMT_YUV420P9
#define AV_PIX_FMT_YUV420P9
Definition: pixfmt.h:386
AV_PIX_FMT_YUV420P16
#define AV_PIX_FMT_YUV420P16
Definition: pixfmt.h:400
ctx
AVFormatContext * ctx
Definition: movenc.c:48
AV_PIX_FMT_GRAY14
#define AV_PIX_FMT_GRAY14
Definition: pixfmt.h:372
AVPixFmtDescriptor::log2_chroma_w
uint8_t log2_chroma_w
Amount to shift the luma width right to find the chroma width.
Definition: pixdesc.h:80
lenscorrection_options
static const AVOption lenscorrection_options[]
Definition: vf_lenscorrection.c:57
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
LenscorrectionCtx::cx
double cx
Definition: vf_lenscorrection.c:45
AV_PIX_FMT_YUVJ444P
@ AV_PIX_FMT_YUVJ444P
planar YUV 4:4:4, 24bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV444P and setting col...
Definition: pixfmt.h:80
arg
const char * arg
Definition: jacosubdec.c:67
AV_PIX_FMT_GRAY10
#define AV_PIX_FMT_GRAY10
Definition: pixfmt.h:370
OFFSET
#define OFFSET(x)
Definition: vf_lenscorrection.c:55
AV_PIX_FMT_GBRP16
#define AV_PIX_FMT_GBRP16
Definition: pixfmt.h:408
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:66
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:537
AV_PIX_FMT_YUVJ420P
@ AV_PIX_FMT_YUVJ420P
planar YUV 4:2:0, 12bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV420P and setting col...
Definition: pixfmt.h:78
AV_OPT_TYPE_COLOR
@ AV_OPT_TYPE_COLOR
Definition: opt.h:239
LenscorrectionCtx::filter_slice
int(* filter_slice)(AVFilterContext *ctx, void *arg, int job, int nb_jobs, int plane)
Definition: vf_lenscorrection.c:52
AV_PIX_FMT_YUV440P10
#define AV_PIX_FMT_YUV440P10
Definition: pixfmt.h:391
AV_PIX_FMT_YUV422P10
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:390
LenscorrectionCtx::k1
double k1
Definition: vf_lenscorrection.c:45
AV_PIX_FMT_GRAY8
@ AV_PIX_FMT_GRAY8
Y , 8bpp.
Definition: pixfmt.h:74
filter_frame
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
Definition: vf_lenscorrection.c:305
AV_PIX_FMT_GBRP9
#define AV_PIX_FMT_GBRP9
Definition: pixfmt.h:404
AVPixFmtDescriptor::flags
uint64_t flags
Combination of AV_PIX_FMT_FLAG_...
Definition: pixdesc.h:94
ff_vf_lenscorrection
const AVFilter ff_vf_lenscorrection
Definition: vf_lenscorrection.c:360
LenscorrectionCtx::k2
double k2
Definition: vf_lenscorrection.c:45
RGB_TO_V_BT709
#define RGB_TO_V_BT709(r1, g1, b1, max)
Definition: vf_pseudocolor.c:569
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:116
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
AV_PIX_FMT_YUV422P12
#define AV_PIX_FMT_YUV422P12
Definition: pixfmt.h:394
AV_PIX_FMT_YUV444P12
#define AV_PIX_FMT_YUV444P12
Definition: pixfmt.h:396
ff_filter_process_command
int ff_filter_process_command(AVFilterContext *ctx, const char *cmd, const char *arg, char *res, int res_len, int flags)
Generic processing of user supplied commands that are set in the same way as the filter options.
Definition: avfilter.c:842
AV_PIX_FMT_YUVA444P
@ AV_PIX_FMT_YUVA444P
planar YUV 4:4:4 32bpp, (1 Cr & Cb sample per 1x1 Y & A samples)
Definition: pixfmt.h:167
LenscorrectionCtx::interpolation
int interpolation
Definition: vf_lenscorrection.c:46
AV_PIX_FMT_YUVA444P10
#define AV_PIX_FMT_YUVA444P10
Definition: pixfmt.h:428
interpolation
static int interpolation(DeclickChannel *c, const double *src, int ar_order, double *acoefficients, int *index, int nb_errors, double *auxiliary, double *interpolated)
Definition: af_adeclick.c:365
internal.h
AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC
#define AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC
Some filters support a generic "enable" expression option that can be used to enable or disable a fil...
Definition: avfilter.h:126
i
int i
Definition: input.c:406
lenscorrection_outputs
static const AVFilterPad lenscorrection_outputs[]
Definition: vf_lenscorrection.c:351
lenscorrection_inputs
static const AVFilterPad lenscorrection_inputs[]
Definition: vf_lenscorrection.c:342
FLAGS
#define FLAGS
Definition: vf_lenscorrection.c:56
av_malloc_array
#define av_malloc_array(a, b)
Definition: tableprint_vlc.h:32
AV_PIX_FMT_GBRP12
#define AV_PIX_FMT_GBRP12
Definition: pixfmt.h:406
ff_filter_get_nb_threads
int ff_filter_get_nb_threads(AVFilterContext *ctx)
Get number of threads for current filter instance.
Definition: avfilter.c:762
ThreadData
Used for passing data between threads.
Definition: dsddec.c:67
FFMIN
#define FFMIN(a, b)
Definition: macros.h:49
AV_PIX_FMT_YUVJ440P
@ AV_PIX_FMT_YUVJ440P
planar YUV 4:4:0 full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV440P and setting color_range
Definition: pixfmt.h:100
AVFilterPad::name
const char * name
Pad name.
Definition: internal.h:60
AV_PIX_FMT_YUV444P9
#define AV_PIX_FMT_YUV444P9
Definition: pixfmt.h:388
AVFilter
Filter definition.
Definition: avfilter.h:145
ret
ret
Definition: filter_design.txt:187
AV_PIX_FMT_YUVA444P9
#define AV_PIX_FMT_YUVA444P9
Definition: pixfmt.h:425
AV_PIX_FMT_YUV420P12
#define AV_PIX_FMT_YUV420P12
Definition: pixfmt.h:393
AV_PIX_FMT_YUV422P14
#define AV_PIX_FMT_YUV422P14
Definition: pixfmt.h:398
AV_PIX_FMT_NONE
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:65
AV_PIX_FMT_YUVA422P12
#define AV_PIX_FMT_YUVA422P12
Definition: pixfmt.h:429
AV_OPT_TYPE_INT
@ AV_OPT_TYPE_INT
Definition: opt.h:224
avfilter.h
AVPixFmtDescriptor::comp
AVComponentDescriptor comp[4]
Parameters that describe how pixels are packed.
Definition: pixdesc.h:105
LenscorrectionCtx::av_class
const AVClass * av_class
Definition: vf_lenscorrection.c:40
BILINEAR
#define BILINEAR(type, name)
Definition: vf_lenscorrection.c:114
AV_PIX_FMT_YUV444P
@ AV_PIX_FMT_YUV444P
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:71
AVFilterContext
An instance of a filter.
Definition: avfilter.h:333
factor
static const int factor[16]
Definition: vf_pp7.c:76
process_command
static int process_command(AVFilterContext *ctx, const char *cmd, const char *arg, char *res, int res_len, int flags)
Definition: vf_lenscorrection.c:327
AV_PIX_FMT_GBRP
@ AV_PIX_FMT_GBRP
planar GBR 4:4:4 24bpp
Definition: pixfmt.h:158
AVFILTER_FLAG_SLICE_THREADS
#define AVFILTER_FLAG_SLICE_THREADS
The filter supports multithreading by splitting frames into multiple parts and processing them concur...
Definition: avfilter.h:117
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
AV_PIX_FMT_YUV422P
@ AV_PIX_FMT_YUV422P
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:70
config_output
static int config_output(AVFilterLink *outlink)
Definition: vf_lenscorrection.c:246
ThreadData::in
AVFrame * in
Definition: af_adenorm.c:223
AVPixFmtDescriptor
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:69
LenscorrectionCtx::planeheight
int planeheight[4]
Definition: vf_lenscorrection.c:42
av_freep
#define av_freep(p)
Definition: tableprint_vlc.h:35
AV_PIX_FMT_YUV411P
@ AV_PIX_FMT_YUV411P
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
Definition: pixfmt.h:73
ff_fill_rgba_map
int ff_fill_rgba_map(uint8_t *rgba_map, enum AVPixelFormat pix_fmt)
Definition: drawutils.c:33
int32_t
int32_t
Definition: audioconvert.c:56
flags
#define flags(name, subs,...)
Definition: cbs_av1.c:561
AV_PIX_FMT_YUV410P
@ AV_PIX_FMT_YUV410P
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: pixfmt.h:72
AV_PIX_FMT_YUV440P12
#define AV_PIX_FMT_YUV440P12
Definition: pixfmt.h:395
h
h
Definition: vp9dsp_template.c:2038
AV_PIX_FMT_YUV444P14
#define AV_PIX_FMT_YUV444P14
Definition: pixfmt.h:399
AV_PIX_FMT_GRAY12
#define AV_PIX_FMT_GRAY12
Definition: pixfmt.h:371
drawutils.h
int
int
Definition: ffmpeg_filter.c:156
AV_OPT_TYPE_CONST
@ AV_OPT_TYPE_CONST
Definition: opt.h:233
LenscorrectionCtx
Definition: vf_lenscorrection.c:39
AVPixFmtDescriptor::log2_chroma_h
uint8_t log2_chroma_h
Amount to shift the luma height right to find the chroma height.
Definition: pixdesc.h:89
AV_PIX_FMT_YUVA422P
@ AV_PIX_FMT_YUVA422P
planar YUV 4:2:2 24bpp, (1 Cr & Cb sample per 2x1 Y & A samples)
Definition: pixfmt.h:166
AV_PIX_FMT_YUV420P14
#define AV_PIX_FMT_YUV420P14
Definition: pixfmt.h:397
filter_slice
static int filter_slice(AVFilterContext *ctx, void *arg, int job, int nb_jobs)
Definition: vf_lenscorrection.c:294