FFmpeg  4.4.5
vf_lenscorrection.c
Go to the documentation of this file.
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;
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 
305 static int filter_frame(AVFilterLink *inlink, AVFrame *in)
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 };
static const AVFilterPad inputs[]
Definition: af_acontrast.c:193
static const AVFilterPad outputs[]
Definition: af_acontrast.c:203
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
#define av_cold
Definition: attributes.h:88
uint8_t pi<< 24) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8, uint8_t,(*(const uint8_t *) pi - 0x80) *(1.0f/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8, uint8_t,(*(const uint8_t *) pi - 0x80) *(1.0/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16, int16_t,(*(const int16_t *) pi >> 8)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, int16_t, *(const int16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, int16_t, *(const int16_t *) pi *(1.0/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32, int32_t,(*(const int32_t *) pi >> 24)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, int32_t, *(const int32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, int32_t, *(const int32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, float, av_clip_uint8(lrintf(*(const float *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, float, av_clip_int16(lrintf(*(const float *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, float, av_clipl_int32(llrintf(*(const float *) pi *(1U<< 31)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, double, av_clip_uint8(lrint(*(const double *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, double, av_clip_int16(lrint(*(const double *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, double, av_clipl_int32(llrint(*(const double *) pi *(1U<< 31)))) #define SET_CONV_FUNC_GROUP(ofmt, ifmt) static void set_generic_function(AudioConvert *ac) { } void ff_audio_convert_free(AudioConvert **ac) { if(! *ac) return;ff_dither_free(&(*ac) ->dc);av_freep(ac);} AudioConvert *ff_audio_convert_alloc(AVAudioResampleContext *avr, enum AVSampleFormat out_fmt, enum AVSampleFormat in_fmt, int channels, int sample_rate, int apply_map) { AudioConvert *ac;int in_planar, out_planar;ac=av_mallocz(sizeof(*ac));if(!ac) return NULL;ac->avr=avr;ac->out_fmt=out_fmt;ac->in_fmt=in_fmt;ac->channels=channels;ac->apply_map=apply_map;if(avr->dither_method !=AV_RESAMPLE_DITHER_NONE &&av_get_packed_sample_fmt(out_fmt)==AV_SAMPLE_FMT_S16 &&av_get_bytes_per_sample(in_fmt) > 2) { ac->dc=ff_dither_alloc(avr, out_fmt, in_fmt, channels, sample_rate, apply_map);if(!ac->dc) { av_free(ac);return NULL;} return ac;} in_planar=ff_sample_fmt_is_planar(in_fmt, channels);out_planar=ff_sample_fmt_is_planar(out_fmt, channels);if(in_planar==out_planar) { ac->func_type=CONV_FUNC_TYPE_FLAT;ac->planes=in_planar ? ac->channels :1;} else if(in_planar) ac->func_type=CONV_FUNC_TYPE_INTERLEAVE;else ac->func_type=CONV_FUNC_TYPE_DEINTERLEAVE;set_generic_function(ac);if(ARCH_AARCH64) ff_audio_convert_init_aarch64(ac);if(ARCH_ARM) ff_audio_convert_init_arm(ac);if(ARCH_X86) ff_audio_convert_init_x86(ac);return ac;} int ff_audio_convert(AudioConvert *ac, AudioData *out, AudioData *in) { int use_generic=1;int len=in->nb_samples;int p;if(ac->dc) { av_log(ac->avr, AV_LOG_TRACE, "%d samples - audio_convert: %s to %s (dithered)\n", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));return ff_convert_dither(ac-> in
uint8_t
int32_t
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1096
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:882
int ff_filter_get_nb_threads(AVFilterContext *ctx)
Get number of threads for current filter instance.
Definition: avfilter.c:802
Main libavfilter public API header.
#define flags(name, subs,...)
Definition: cbs_av1.c:572
#define FFMIN(a, b)
Definition: common.h:105
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:58
#define NULL
Definition: coverity.c:32
long long int64_t
Definition: coverity.c:34
int ff_fill_rgba_map(uint8_t *rgba_map, enum AVPixelFormat pix_fmt)
Definition: drawutils.c:35
misc drawing utilities
int
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:587
AVFilterFormats * ff_make_format_list(const int *fmts)
Create a list of supported formats.
Definition: formats.c:286
@ AV_OPT_TYPE_CONST
Definition: opt.h:234
@ AV_OPT_TYPE_INT
Definition: opt.h:225
@ AV_OPT_TYPE_DOUBLE
Definition: opt.h:227
@ AV_OPT_TYPE_COLOR
Definition: opt.h:240
#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
#define AVFILTER_FLAG_SLICE_THREADS
The filter supports multithreading by splitting frames into multiple parts and processing them concur...
Definition: avfilter.h:117
#define AVERROR(e)
Definition: error.h:43
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:203
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
Definition: frame.c:658
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
int i
Definition: input.c:407
const char * arg
Definition: jacosubdec.c:66
Various defines for YUV<->RGB conversion.
common internal API header
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition: internal.h:117
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:309
uint8_t w
Definition: llviddspenc.c:39
AVOptions.
int av_pix_fmt_count_planes(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2613
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2573
#define AV_PIX_FMT_FLAG_RGB
The pixel format contains RGB-like data (as opposed to YUV/grayscale).
Definition: pixdesc.h:148
#define AV_PIX_FMT_GBRAP12
Definition: pixfmt.h:420
#define AV_PIX_FMT_YUV420P16
Definition: pixfmt.h:410
#define AV_PIX_FMT_YUV444P12
Definition: pixfmt.h:406
#define AV_PIX_FMT_YUV444P9
Definition: pixfmt.h:398
#define AV_PIX_FMT_YUV420P10
Definition: pixfmt.h:399
#define AV_PIX_FMT_YUV440P12
Definition: pixfmt.h:405
#define AV_PIX_FMT_GRAY9
Definition: pixfmt.h:379
#define AV_PIX_FMT_GBRAP16
Definition: pixfmt.h:421
#define AV_PIX_FMT_GBRP9
Definition: pixfmt.h:414
#define AV_PIX_FMT_YUV422P9
Definition: pixfmt.h:397
#define AV_PIX_FMT_YUVA444P10
Definition: pixfmt.h:438
#define AV_PIX_FMT_YUVA420P16
Definition: pixfmt.h:441
#define AV_PIX_FMT_YUV420P12
Definition: pixfmt.h:403
#define AV_PIX_FMT_YUVA420P10
Definition: pixfmt.h:436
#define AV_PIX_FMT_YUVA422P9
Definition: pixfmt.h:434
#define AV_PIX_FMT_YUV422P12
Definition: pixfmt.h:404
#define AV_PIX_FMT_GBRP10
Definition: pixfmt.h:415
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:400
#define AV_PIX_FMT_GRAY12
Definition: pixfmt.h:381
#define AV_PIX_FMT_GBRP12
Definition: pixfmt.h:416
#define AV_PIX_FMT_YUV420P9
Definition: pixfmt.h:396
#define AV_PIX_FMT_YUVA420P9
Definition: pixfmt.h:433
#define AV_PIX_FMT_YUVA422P10
Definition: pixfmt.h:437
#define AV_PIX_FMT_YUV420P14
Definition: pixfmt.h:407
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:65
@ 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_YUV440P
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
Definition: pixfmt.h:99
@ AV_PIX_FMT_YUV422P
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:70
@ AV_PIX_FMT_GRAY8
Y , 8bpp.
Definition: pixfmt.h:74
@ 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_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
@ 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_YUV411P
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
Definition: pixfmt.h:73
@ AV_PIX_FMT_YUV444P
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:71
@ AV_PIX_FMT_YUVA444P
planar YUV 4:4:4 32bpp, (1 Cr & Cb sample per 1x1 Y & A samples)
Definition: pixfmt.h:177
@ 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:258
@ AV_PIX_FMT_GBRAP
planar GBRA 4:4:4:4 32bpp
Definition: pixfmt.h:215
@ 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_YUVA422P
planar YUV 4:2:2 24bpp, (1 Cr & Cb sample per 2x1 Y & A samples)
Definition: pixfmt.h:176
@ AV_PIX_FMT_GBRP
planar GBR 4:4:4 24bpp
Definition: pixfmt.h:168
@ 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
@ 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
#define AV_PIX_FMT_YUVA422P12
Definition: pixfmt.h:439
#define AV_PIX_FMT_YUV422P14
Definition: pixfmt.h:408
#define AV_PIX_FMT_GRAY10
Definition: pixfmt.h:380
#define AV_PIX_FMT_GRAY14
Definition: pixfmt.h:382
#define AV_PIX_FMT_YUV422P16
Definition: pixfmt.h:411
#define AV_PIX_FMT_YUV440P10
Definition: pixfmt.h:401
#define AV_PIX_FMT_GRAY16
Definition: pixfmt.h:383
#define AV_PIX_FMT_GBRAP10
Definition: pixfmt.h:419
#define AV_PIX_FMT_YUVA444P16
Definition: pixfmt.h:443
#define AV_PIX_FMT_YUVA422P16
Definition: pixfmt.h:442
#define AV_PIX_FMT_GBRP16
Definition: pixfmt.h:418
#define AV_PIX_FMT_YUV444P14
Definition: pixfmt.h:409
#define AV_PIX_FMT_YUVA444P9
Definition: pixfmt.h:435
#define AV_PIX_FMT_GBRP14
Definition: pixfmt.h:417
#define AV_PIX_FMT_YUVA444P12
Definition: pixfmt.h:440
#define AV_PIX_FMT_YUV444P16
Definition: pixfmt.h:412
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:402
#define td
Definition: regdef.h:70
#define FF_ARRAY_ELEMS(a)
Describe the class of an AVClass context structure.
Definition: log.h:67
int depth
Number of bits in the component.
Definition: pixdesc.h:58
An instance of a filter.
Definition: avfilter.h:341
A list of supported formats for one end of a filter link.
Definition: formats.h:65
A filter pad used for either input or output.
Definition: internal.h:54
const char * name
Pad name.
Definition: internal.h:60
Filter definition.
Definition: avfilter.h:145
const char * name
Filter name.
Definition: avfilter.h:149
AVFormatInternal * internal
An opaque field for libavformat internal usage.
Definition: avformat.h:1699
This structure describes decoded (raw) audio or video data.
Definition: frame.h:318
AVOption.
Definition: opt.h:248
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:81
AVComponentDescriptor comp[4]
Parameters that describe how pixels are packed.
Definition: pixdesc.h:117
uint8_t log2_chroma_w
Amount to shift the luma width right to find the chroma width.
Definition: pixdesc.h:92
uint64_t flags
Combination of AV_PIX_FMT_FLAG_...
Definition: pixdesc.h:106
uint8_t log2_chroma_h
Amount to shift the luma height right to find the chroma height.
Definition: pixdesc.h:101
int32_t * correction[4]
int(* filter_slice)(AVFilterContext *ctx, void *arg, int job, int nb_jobs, int plane)
const AVClass * av_class
Used for passing data between threads.
Definition: dsddec.c:67
AVFrame * out
Definition: af_adeclick.c:502
AVFrame * in
Definition: af_adenorm.c:223
Definition: f_ebur128.c:91
#define av_malloc_array(a, b)
#define av_freep(p)
FILE * out
Definition: movenc.c:54
AVFormatContext * ctx
Definition: movenc.c:48
static int process_command(AVFilterContext *ctx, const char *cmd, const char *arg, char *res, int res_len, int flags)
#define NEAREST(type, name)
static void calc_correction(AVFilterContext *ctx, int plane)
AVFILTER_DEFINE_CLASS(lenscorrection)
static int query_formats(AVFilterContext *ctx)
#define FLAGS
static const AVFilterPad lenscorrection_inputs[]
static const AVFilterPad lenscorrection_outputs[]
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
static const AVOption lenscorrection_options[]
static av_cold void uninit(AVFilterContext *ctx)
static int filter_slice(AVFilterContext *ctx, void *arg, int job, int nb_jobs)
#define OFFSET(x)
static int config_output(AVFilterLink *outlink)
#define BILINEAR(type, name)
AVFilter ff_vf_lenscorrection
static const int factor[16]
Definition: vf_pp7.c:77
#define RGB_TO_Y_BT709(r, g, b)
#define RGB_TO_U_BT709(r1, g1, b1, max)
#define RGB_TO_V_BT709(r1, g1, b1, max)
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.
Definition: video.c:104