FFmpeg
vf_dblur.c
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1 /*
2  * Copyright (c) 2020 Paul B Mahol
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 #include "libavutil/imgutils.h"
22 #include "libavutil/opt.h"
23 #include "libavutil/pixdesc.h"
24 #include "avfilter.h"
25 #include "formats.h"
26 #include "internal.h"
27 #include "video.h"
28 
29 typedef struct DBlurContext {
30  const AVClass *class;
31 
32  float angle;
33  float radius;
34  int planes;
35 
36  float b0, b1, q, c, R3;
37 
38  int depth;
39  int planewidth[4];
40  int planeheight[4];
41  float *buffer;
42  int nb_planes;
43 } DBlurContext;
44 
45 #define OFFSET(x) offsetof(DBlurContext, x)
46 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
47 
48 static const AVOption dblur_options[] = {
49  { "angle", "set angle", OFFSET(angle), AV_OPT_TYPE_FLOAT, {.dbl=45}, 0.0, 360, FLAGS },
50  { "radius", "set radius", OFFSET(radius), AV_OPT_TYPE_FLOAT, {.dbl=5}, 1, 8192, FLAGS },
51  { "planes", "set planes to filter", OFFSET(planes), AV_OPT_TYPE_INT, {.i64=0xF}, 0, 0xF, FLAGS },
52  { NULL }
53 };
54 
56 
57 #define f(n, m) (dst[(n) * width + (m)])
58 
60 {
61  DBlurContext *s = ctx->priv;
62  const float b0 = s->b0;
63  const float b1 = s->b1;
64  const float q = s->q;
65  const float c = s->c;
66  float *dst = s->buffer;
67  float g;
68 
69  if (s->R3 > 0) {
70  for (int y = 1; y < height - 1; y++) {
71  g = q * f(0, 0) + c * f(0, 0);
72  for (int x = 0; x < width; x++) {
73  f(y, x) = b0 * f(y, x) + b1 * f(y - 1, x) + g;
74  g = q * f(y, x) + c * f(y - 1, x);
75  }
76  }
77 
78  for (int y = height - 2; y >= 0; y--) {
79  g = q * f(y, width - 1) + c * f(y, width - 1);
80  for (int x = width - 1; x >= 0; x--) {
81  f(y, x) = b0 * f(y, x) + b1 * f(y + 1, x) + g;
82  g = q * f(y, x) + c * f(y + 1, x);
83  }
84  }
85  } else {
86  for (int y = 1; y < height - 1; y++) {
87  g = q * f(0, width - 1) + c * f(0, width - 1);
88  for (int x = width - 1; x >= 0; x--) {
89  f(y, x) = b0 * f(y, x) + b1 * f(y - 1, x) + g;
90  g = q * f(y, x) + c * f(y - 1, x);
91  }
92  }
93 
94  for (int y = height - 2; y >= 0; y--) {
95  g = q * f(y, 0) + c * f(y, 0);
96  for (int x = 0; x < width; x++) {
97  f(y, x) = b0 * f(y, x) + b1 * f(y + 1, x) + g;
98  g = q * f(y, x) + c * f(y + 1, x);
99  }
100  }
101  }
102 
103  return 0;
104 }
105 
106 static void diriir2d(AVFilterContext *ctx, int plane)
107 {
108  DBlurContext *s = ctx->priv;
109  const int width = s->planewidth[plane];
110  const int height = s->planeheight[plane];
111 
112  filter_horizontally(ctx, width, height);
113 }
114 
116 {
117  static const enum AVPixelFormat pix_fmts[] = {
137  };
138 
139  return ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
140 }
141 
143 {
145  DBlurContext *s = inlink->dst->priv;
146 
147  s->depth = desc->comp[0].depth;
148  s->planewidth[1] = s->planewidth[2] = AV_CEIL_RSHIFT(inlink->w, desc->log2_chroma_w);
149  s->planewidth[0] = s->planewidth[3] = inlink->w;
150  s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h);
151  s->planeheight[0] = s->planeheight[3] = inlink->h;
152 
154 
155  s->buffer = av_malloc_array(FFALIGN(inlink->w, 16), FFALIGN(inlink->h, 16) * sizeof(*s->buffer));
156  if (!s->buffer)
157  return AVERROR(ENOMEM);
158 
159  return 0;
160 }
161 
162 static void set_params(DBlurContext *s, float angle, float r)
163 {
164  float mu, nu, R1, R2, w1, w2;
165  float a0, a1, a2, a3;
166 
167  angle = angle * M_PI / 180.f;
168 
169  mu = cosf(angle);
170  nu = sinf(angle);
171  R1 = (mu * r) * (mu * r);
172  R2 = (nu * r) * (nu * r);
173  s->R3 = mu * nu * r * r;
174  w1 = sqrtf(0.25f + R1);
175  w2 = sqrtf(0.25f + R2);
176  a0 = (w1 + 0.5f) * (w2 + 0.5f) - fabsf(s->R3);
177  a1 = 0.5f + w2 - a0;
178  a2 = 0.5f + w1 - a0;
179  a3 = a0 - w1 - w2;
180  s->b0 = 1.f / a0;
181  s->b1 = -a2 / a0;
182  s->q = -a1 / a0;
183  s->c = -a3 / a0;
184 }
185 
187 {
188  AVFilterContext *ctx = inlink->dst;
189  DBlurContext *s = ctx->priv;
190  AVFilterLink *outlink = ctx->outputs[0];
191  AVFrame *out;
192  int plane;
193 
194  set_params(s, s->angle, s->radius);
195 
196  if (av_frame_is_writable(in)) {
197  out = in;
198  } else {
199  out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
200  if (!out) {
201  av_frame_free(&in);
202  return AVERROR(ENOMEM);
203  }
204  av_frame_copy_props(out, in);
205  }
206 
207  for (plane = 0; plane < s->nb_planes; plane++) {
208  const int height = s->planeheight[plane];
209  const int width = s->planewidth[plane];
210  float *bptr = s->buffer;
211  const uint8_t *src = in->data[plane];
212  const uint16_t *src16 = (const uint16_t *)in->data[plane];
213  uint8_t *dst = out->data[plane];
214  uint16_t *dst16 = (uint16_t *)out->data[plane];
215  int y, x;
216 
217  if (!(s->planes & (1 << plane))) {
218  if (out != in)
219  av_image_copy_plane(out->data[plane], out->linesize[plane],
220  in->data[plane], in->linesize[plane],
221  width * ((s->depth + 7) / 8), height);
222  continue;
223  }
224 
225  if (s->depth == 8) {
226  for (y = 0; y < height; y++) {
227  for (x = 0; x < width; x++) {
228  bptr[x] = src[x];
229  }
230  bptr += width;
231  src += in->linesize[plane];
232  }
233  } else {
234  for (y = 0; y < height; y++) {
235  for (x = 0; x < width; x++) {
236  bptr[x] = src16[x];
237  }
238  bptr += width;
239  src16 += in->linesize[plane] / 2;
240  }
241  }
242 
243  diriir2d(ctx, plane);
244 
245  bptr = s->buffer;
246  if (s->depth == 8) {
247  for (y = 0; y < height; y++) {
248  for (x = 0; x < width; x++) {
249  dst[x] = bptr[x];
250  }
251  bptr += width;
252  dst += out->linesize[plane];
253  }
254  } else {
255  for (y = 0; y < height; y++) {
256  for (x = 0; x < width; x++) {
257  dst16[x] = bptr[x];
258  }
259  bptr += width;
260  dst16 += out->linesize[plane] / 2;
261  }
262  }
263  }
264 
265  if (out != in)
266  av_frame_free(&in);
267  return ff_filter_frame(outlink, out);
268 }
269 
271 {
272  DBlurContext *s = ctx->priv;
273 
274  av_freep(&s->buffer);
275 }
276 
277 static const AVFilterPad dblur_inputs[] = {
278  {
279  .name = "default",
280  .type = AVMEDIA_TYPE_VIDEO,
281  .config_props = config_input,
282  .filter_frame = filter_frame,
283  },
284  { NULL }
285 };
286 
287 static const AVFilterPad dblur_outputs[] = {
288  {
289  .name = "default",
290  .type = AVMEDIA_TYPE_VIDEO,
291  },
292  { NULL }
293 };
294 
296  .name = "dblur",
297  .description = NULL_IF_CONFIG_SMALL("Apply Directional Blur filter."),
298  .priv_size = sizeof(DBlurContext),
299  .priv_class = &dblur_class,
300  .uninit = uninit,
302  .inputs = dblur_inputs,
303  .outputs = dblur_outputs,
306 };
#define NULL
Definition: coverity.c:32
#define AV_PIX_FMT_YUVA422P16
Definition: pixfmt.h:442
#define AV_PIX_FMT_YUVA422P9
Definition: pixfmt.h:434
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2573
This structure describes decoded (raw) audio or video data.
Definition: frame.h:314
AVOption.
Definition: opt.h:248
#define AV_PIX_FMT_YUVA420P10
Definition: pixfmt.h:436
#define AV_PIX_FMT_YUV444P14
Definition: pixfmt.h:409
int planewidth[4]
Definition: vf_dblur.c:39
#define AV_PIX_FMT_GBRAP10
Definition: pixfmt.h:419
#define AV_PIX_FMT_YUVA422P10
Definition: pixfmt.h:437
const char * desc
Definition: libsvtav1.c:79
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:71
misc image utilities
int av_pix_fmt_count_planes(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2613
Main libavfilter public API header.
const char * g
Definition: vf_curves.c:117
#define a0
Definition: regdef.h:46
planar GBR 4:4:4 24bpp
Definition: pixfmt.h:168
static const AVFilterPad dblur_outputs[]
Definition: vf_dblur.c:287
#define AV_PIX_FMT_GBRP10
Definition: pixfmt.h:415
float angle
Definition: vf_dblur.c:32
#define R2
Definition: simple_idct.c:173
#define AV_PIX_FMT_GRAY9
Definition: pixfmt.h:379
#define a1
Definition: regdef.h:47
#define AV_PIX_FMT_YUV420P12
Definition: pixfmt.h:403
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
uint8_t log2_chroma_w
Amount to shift the luma width right to find the chroma width.
Definition: pixdesc.h:92
float c
Definition: vf_dblur.c:36
AVFilterFormats * ff_make_format_list(const int *fmts)
Create a list of supported formats.
Definition: formats.c:287
#define AV_PIX_FMT_GRAY10
Definition: pixfmt.h:380
#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 f(n, m)
Definition: vf_dblur.c:57
const char * name
Pad name.
Definition: internal.h:60
static const AVFilterPad dblur_inputs[]
Definition: vf_dblur.c:277
#define AV_PIX_FMT_GRAY12
Definition: pixfmt.h:381
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1093
#define a3
Definition: regdef.h:49
planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
Definition: pixfmt.h:101
#define FLAGS
Definition: vf_dblur.c:46
AVComponentDescriptor comp[4]
Parameters that describe how pixels are packed.
Definition: pixdesc.h:117
uint8_t
#define av_cold
Definition: attributes.h:88
int nb_planes
Definition: vf_dblur.c:42
AVOptions.
static int filter_horizontally(AVFilterContext *ctx, int width, int height)
Definition: vf_dblur.c:59
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
Definition: vf_dblur.c:186
#define AV_PIX_FMT_YUVA420P9
Definition: pixfmt.h:433
#define cosf(x)
Definition: libm.h:78
#define AV_PIX_FMT_GBRP9
Definition: pixfmt.h:414
#define height
planar YUV 4:4:0 full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV440P and setting color_range...
Definition: pixfmt.h:100
planar YUV 4:2:2, 16bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV422P and setting col...
Definition: pixfmt.h:79
#define AV_PIX_FMT_YUV444P16
Definition: pixfmt.h:412
float radius
Definition: vf_dblur.c:33
#define AV_PIX_FMT_YUV422P12
Definition: pixfmt.h:404
#define AV_PIX_FMT_YUVA420P16
Definition: pixfmt.h:441
static __device__ float fabsf(float a)
Definition: cuda_runtime.h:181
#define FFALIGN(x, a)
Definition: macros.h:48
A filter pad used for either input or output.
Definition: internal.h:54
AVFILTER_DEFINE_CLASS(dblur)
#define src
Definition: vp8dsp.c:255
planar YUV 4:2:2 24bpp, (1 Cr & Cb sample per 2x1 Y & A samples)
Definition: pixfmt.h:176
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:588
uint8_t log2_chroma_h
Amount to shift the luma height right to find the chroma height.
Definition: pixdesc.h:101
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:203
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:115
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:881
const char * r
Definition: vf_curves.c:116
void * priv
private data for use by the filter
Definition: avfilter.h:356
#define AV_PIX_FMT_YUVA444P16
Definition: pixfmt.h:443
#define AV_PIX_FMT_GBRAP12
Definition: pixfmt.h:420
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:402
int planeheight[4]
Definition: vf_dblur.c:40
#define AV_PIX_FMT_GBRAP16
Definition: pixfmt.h:421
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:70
static void diriir2d(AVFilterContext *ctx, int plane)
Definition: vf_dblur.c:106
static void set_params(DBlurContext *s, float angle, float r)
Definition: vf_dblur.c:162
#define AV_PIX_FMT_YUV422P9
Definition: pixfmt.h:397
#define OFFSET(x)
Definition: vf_dblur.c:45
static int query_formats(AVFilterContext *ctx)
Definition: vf_dblur.c:115
#define AV_PIX_FMT_GBRP16
Definition: pixfmt.h:418
#define AV_PIX_FMT_GRAY16
Definition: pixfmt.h:383
int planes
Definition: vf_dblur.c:34
planar YUV 4:2:0, 12bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV420P and setting col...
Definition: pixfmt.h:78
static int process_command(AVFilterContext *ctx, const char *cmd, const char *args, char *res, int res_len, int flags)
Definition: af_acrusher.c:336
#define AV_PIX_FMT_YUVA444P12
Definition: pixfmt.h:440
#define width
float R3
Definition: vf_dblur.c:36
AVFormatContext * ctx
Definition: movenc.c:48
#define a2
Definition: regdef.h:48
#define s(width, name)
Definition: cbs_vp9.c:257
float * buffer
Definition: vf_dblur.c:41
#define AV_PIX_FMT_YUVA444P10
Definition: pixfmt.h:438
static const AVOption dblur_options[]
Definition: vf_dblur.c:48
#define AV_PIX_FMT_YUV444P9
Definition: pixfmt.h:398
#define AV_PIX_FMT_GBRP14
Definition: pixfmt.h:417
static const AVFilterPad outputs[]
Definition: af_acontrast.c:203
static av_cold void uninit(AVFilterContext *ctx)
Definition: vf_dblur.c:270
#define AV_PIX_FMT_YUV420P16
Definition: pixfmt.h:410
#define R1
Definition: simple_idct.c:172
#define sinf(x)
Definition: libm.h:419
#define AV_PIX_FMT_YUV420P14
Definition: pixfmt.h:407
float q
Definition: vf_dblur.c:36
int av_frame_is_writable(AVFrame *frame)
Check if the frame data is writable.
Definition: frame.c:594
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:345
planar YUV 4:4:4 32bpp, (1 Cr & Cb sample per 1x1 Y & A samples)
Definition: pixfmt.h:177
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:81
#define AV_PIX_FMT_GRAY14
Definition: pixfmt.h:382
float b1
Definition: vf_dblur.c:36
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
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
#define AV_PIX_FMT_YUV420P10
Definition: pixfmt.h:399
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: pixfmt.h:72
Describe the class of an AVClass context structure.
Definition: log.h:67
Filter definition.
Definition: avfilter.h:145
const char * name
Filter name.
Definition: avfilter.h:149
#define AV_PIX_FMT_YUV440P12
Definition: pixfmt.h:405
#define AV_PIX_FMT_YUV420P9
Definition: pixfmt.h:396
AVFilterLink ** outputs
array of pointers to output links
Definition: avfilter.h:353
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:303
#define AV_PIX_FMT_YUV422P14
Definition: pixfmt.h:408
#define AV_PIX_FMT_GBRP12
Definition: pixfmt.h:416
#define flags(name, subs,...)
Definition: cbs_av1.c:561
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:400
#define AV_PIX_FMT_YUV444P12
Definition: pixfmt.h:406
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:328
static int config_input(AVFilterLink *inlink)
Definition: vf_dblur.c:142
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
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:66
Y , 8bpp.
Definition: pixfmt.h:74
AVFilter ff_vf_dblur
Definition: vf_dblur.c:295
planar GBRA 4:4:4:4 32bpp
Definition: pixfmt.h:215
#define AV_PIX_FMT_YUVA444P9
Definition: pixfmt.h:435
planar YUV 4:4:4, 24bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV444P and setting col...
Definition: pixfmt.h:80
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
Definition: pixfmt.h:73
float b0
Definition: vf_dblur.c:36
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples) full scale (JPEG), deprecated in favor ...
Definition: pixfmt.h:258
An instance of a filter.
Definition: avfilter.h:341
FILE * out
Definition: movenc.c:54
#define av_freep(p)
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
Definition: pixfmt.h:99
#define M_PI
Definition: mathematics.h:52
#define av_malloc_array(a, b)
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:373
internal API functions
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
int depth
Number of bits in the component.
Definition: pixdesc.h:58
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
#define AV_PIX_FMT_YUV422P16
Definition: pixfmt.h:411
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
Definition: frame.c:658
#define AV_PIX_FMT_YUVA422P12
Definition: pixfmt.h:439
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:58