FFmpeg
vf_bilateral.c
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1 /*
2  * Copyright (c) 2017 Ming Yang
3  * Copyright (c) 2019 Paul B Mahol
4  *
5  * Permission is hereby granted, free of charge, to any person obtaining a copy
6  * of this software and associated documentation files (the "Software"), to deal
7  * in the Software without restriction, including without limitation the rights
8  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
9  * copies of the Software, and to permit persons to whom the Software is
10  * furnished to do so, subject to the following conditions:
11  *
12  * The above copyright notice and this permission notice shall be included in all
13  * copies or substantial portions of the Software.
14  *
15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21  * SOFTWARE.
22  */
23 
24 #include "libavutil/imgutils.h"
25 #include "libavutil/opt.h"
26 #include "libavutil/pixdesc.h"
27 #include "avfilter.h"
28 #include "formats.h"
29 #include "internal.h"
30 #include "video.h"
31 
32 typedef struct BilateralContext {
33  const AVClass *class;
34 
35  float sigmaS;
36  float sigmaR;
37  int planes;
38 
39  int nb_planes;
40  int depth;
41  int planewidth[4];
42  int planeheight[4];
43 
44  float range_table[65536];
45 
46  float *img_out_f;
47  float *img_temp;
48  float *map_factor_a;
49  float *map_factor_b;
52  float *line_factor_a;
53  float *line_factor_b;
55 
56 #define OFFSET(x) offsetof(BilateralContext, x)
57 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
58 
59 static const AVOption bilateral_options[] = {
60  { "sigmaS", "set spatial sigma", OFFSET(sigmaS), AV_OPT_TYPE_FLOAT, {.dbl=0.1}, 0.0, 10, FLAGS },
61  { "sigmaR", "set range sigma", OFFSET(sigmaR), AV_OPT_TYPE_FLOAT, {.dbl=0.1}, 0.0, 1, FLAGS },
62  { "planes", "set planes to filter", OFFSET(planes), AV_OPT_TYPE_INT, {.i64=1}, 0, 0xF, FLAGS },
63  { NULL }
64 };
65 
66 AVFILTER_DEFINE_CLASS(bilateral);
67 
69 {
70  static const enum AVPixelFormat pix_fmts[] = {
89  };
90 
91  return ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
92 }
93 
95 {
96  BilateralContext *s = inlink->dst->priv;
98  float inv_sigma_range;
99 
100  s->depth = desc->comp[0].depth;
101  inv_sigma_range = 1.0f / (s->sigmaR * ((1 << s->depth) - 1));
102 
103  //compute a lookup table
104  for (int i = 0; i < (1 << s->depth); i++)
105  s->range_table[i] = expf(-i * inv_sigma_range);
106 
107  s->planewidth[1] = s->planewidth[2] = AV_CEIL_RSHIFT(inlink->w, desc->log2_chroma_w);
108  s->planewidth[0] = s->planewidth[3] = inlink->w;
109  s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h);
110  s->planeheight[0] = s->planeheight[3] = inlink->h;
111 
113 
114  s->img_out_f = av_calloc(inlink->w * inlink->h, sizeof(float));
115  s->img_temp = av_calloc(inlink->w * inlink->h, sizeof(float));
116  s->map_factor_a = av_calloc(inlink->w * inlink->h, sizeof(float));
117  s->map_factor_b = av_calloc(inlink->w * inlink->h, sizeof(float));
118  s->slice_factor_a = av_calloc(inlink->w, sizeof(float));
119  s->slice_factor_b = av_calloc(inlink->w, sizeof(float));
120  s->line_factor_a = av_calloc(inlink->w, sizeof(float));
121  s->line_factor_b = av_calloc(inlink->w, sizeof(float));
122 
123  if (!s->img_out_f ||
124  !s->img_temp ||
125  !s->map_factor_a ||
126  !s->map_factor_b ||
127  !s->slice_factor_a ||
128  !s->slice_factor_a ||
129  !s->line_factor_a ||
130  !s->line_factor_a)
131  return AVERROR(ENOMEM);
132 
133  return 0;
134 }
135 
136 #define BILATERAL(type, name) \
137 static void bilateral_##name(BilateralContext *s, const uint8_t *ssrc, uint8_t *ddst, \
138  float sigma_spatial, float sigma_range, \
139  int width, int height, int src_linesize, int dst_linesize) \
140 { \
141  type *dst = (type *)ddst; \
142  const type *src = (const type *)ssrc; \
143  float *img_out_f = s->img_out_f, *img_temp = s->img_temp; \
144  float *map_factor_a = s->map_factor_a, *map_factor_b = s->map_factor_b; \
145  float *slice_factor_a = s->slice_factor_a, *slice_factor_b = s->slice_factor_b; \
146  float *line_factor_a = s->line_factor_a, *line_factor_b = s->line_factor_b; \
147  float *range_table = s->range_table; \
148  float alpha = expf(-sqrtf(2.f) / (sigma_spatial * width)); \
149  float ypr, ycr, *ycy, *ypy, *xcy, fp, fc; \
150  float inv_alpha_ = 1 - alpha; \
151  float *ycf, *ypf, *xcf, *in_factor; \
152  const type *tcy, *tpy; \
153  int h1; \
154  \
155  for (int y = 0; y < height; y++) { \
156  float *temp_factor_x, *temp_x = &img_temp[y * width]; \
157  const type *in_x = &src[y * src_linesize]; \
158  const type *texture_x = &src[y * src_linesize]; \
159  type tpr; \
160  \
161  *temp_x++ = ypr = *in_x++; \
162  tpr = *texture_x++; \
163  \
164  temp_factor_x = &map_factor_a[y * width]; \
165  *temp_factor_x++ = fp = 1; \
166  \
167  for (int x = 1; x < width; x++) { \
168  float weight, alpha_; \
169  int range_dist; \
170  type tcr = *texture_x++; \
171  type dr = abs(tcr - tpr); \
172  \
173  range_dist = dr; \
174  weight = range_table[range_dist]; \
175  alpha_ = weight*alpha; \
176  *temp_x++ = ycr = inv_alpha_*(*in_x++) + alpha_*ypr; \
177  tpr = tcr; \
178  ypr = ycr; \
179  *temp_factor_x++ = fc = inv_alpha_ + alpha_ * fp; \
180  fp = fc; \
181  } \
182  --temp_x; *temp_x = 0.5f*((*temp_x) + (*--in_x)); \
183  tpr = *--texture_x; \
184  ypr = *in_x; \
185  \
186  --temp_factor_x; *temp_factor_x = 0.5f*((*temp_factor_x) + 1); \
187  fp = 1; \
188  \
189  for (int x = width - 2; x >= 0; x--) { \
190  type tcr = *--texture_x; \
191  type dr = abs(tcr - tpr); \
192  int range_dist = dr; \
193  float weight = range_table[range_dist]; \
194  float alpha_ = weight * alpha; \
195  \
196  ycr = inv_alpha_ * (*--in_x) + alpha_ * ypr; \
197  --temp_x; *temp_x = 0.5f*((*temp_x) + ycr); \
198  tpr = tcr; \
199  ypr = ycr; \
200  \
201  fc = inv_alpha_ + alpha_*fp; \
202  --temp_factor_x; \
203  *temp_factor_x = 0.5f*((*temp_factor_x) + fc); \
204  fp = fc; \
205  } \
206  } \
207  memcpy(img_out_f, img_temp, sizeof(float) * width); \
208  \
209  alpha = expf(-sqrtf(2.f) / (sigma_spatial * height)); \
210  inv_alpha_ = 1 - alpha; \
211  in_factor = map_factor_a; \
212  memcpy(map_factor_b, in_factor, sizeof(float) * width); \
213  for (int y = 1; y < height; y++) { \
214  tpy = &src[(y - 1) * src_linesize]; \
215  tcy = &src[y * src_linesize]; \
216  xcy = &img_temp[y * width]; \
217  ypy = &img_out_f[(y - 1) * width]; \
218  ycy = &img_out_f[y * width]; \
219  \
220  xcf = &in_factor[y * width]; \
221  ypf = &map_factor_b[(y - 1) * width]; \
222  ycf = &map_factor_b[y * width]; \
223  for (int x = 0; x < width; x++) { \
224  type dr = abs((*tcy++) - (*tpy++)); \
225  int range_dist = dr; \
226  float weight = range_table[range_dist]; \
227  float alpha_ = weight*alpha; \
228  \
229  *ycy++ = inv_alpha_*(*xcy++) + alpha_*(*ypy++); \
230  *ycf++ = inv_alpha_*(*xcf++) + alpha_*(*ypf++); \
231  } \
232  } \
233  h1 = height - 1; \
234  ycf = line_factor_a; \
235  ypf = line_factor_b; \
236  memcpy(ypf, &in_factor[h1 * width], sizeof(float) * width); \
237  for (int x = 0; x < width; x++) \
238  map_factor_b[h1 * width + x] = 0.5f*(map_factor_b[h1 * width + x] + ypf[x]); \
239  \
240  ycy = slice_factor_a; \
241  ypy = slice_factor_b; \
242  memcpy(ypy, &img_temp[h1 * width], sizeof(float) * width); \
243  for (int x = 0, k = 0; x < width; x++) { \
244  int idx = h1 * width + x; \
245  img_out_f[idx] = 0.5f*(img_out_f[idx] + ypy[k++]) / map_factor_b[h1 * width + x]; \
246  } \
247  \
248  for (int y = h1 - 1; y >= 0; y--) { \
249  float *ycf_, *ypf_, *factor_; \
250  float *ycy_, *ypy_, *out_; \
251  \
252  tpy = &src[(y + 1) * src_linesize]; \
253  tcy = &src[y * src_linesize]; \
254  xcy = &img_temp[y * width]; \
255  ycy_ = ycy; \
256  ypy_ = ypy; \
257  out_ = &img_out_f[y * width]; \
258  \
259  xcf = &in_factor[y * width]; \
260  ycf_ = ycf; \
261  ypf_ = ypf; \
262  factor_ = &map_factor_b[y * width]; \
263  for (int x = 0; x < width; x++) { \
264  type dr = abs((*tcy++) - (*tpy++)); \
265  int range_dist = dr; \
266  float weight = range_table[range_dist]; \
267  float alpha_ = weight*alpha; \
268  float ycc, fcc = inv_alpha_*(*xcf++) + alpha_*(*ypf_++); \
269  \
270  *ycf_++ = fcc; \
271  *factor_ = 0.5f * (*factor_ + fcc); \
272  \
273  ycc = inv_alpha_*(*xcy++) + alpha_*(*ypy_++); \
274  *ycy_++ = ycc; \
275  *out_ = 0.5f * (*out_ + ycc) / (*factor_); \
276  out_++; \
277  factor_++; \
278  } \
279  \
280  memcpy(ypy, ycy, sizeof(float) * width); \
281  memcpy(ypf, ycf, sizeof(float) * width); \
282  } \
283  \
284  for (int i = 0; i < height; i++) \
285  for (int j = 0; j < width; j++) \
286  dst[j + i * dst_linesize] = img_out_f[i * width + j]; \
287 }
288 
290 BILATERAL(uint16_t, word)
291 
293 {
294  AVFilterContext *ctx = inlink->dst;
295  BilateralContext *s = ctx->priv;
296  AVFilterLink *outlink = ctx->outputs[0];
297  AVFrame *out;
298 
299  out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
300  if (!out) {
301  av_frame_free(&in);
302  return AVERROR(ENOMEM);
303  }
304  av_frame_copy_props(out, in);
305 
306  for (int plane = 0; plane < s->nb_planes; plane++) {
307  if (!(s->planes & (1 << plane))) {
308  av_image_copy_plane(out->data[plane], out->linesize[plane],
309  in->data[plane], in->linesize[plane],
310  s->planewidth[plane] * ((s->depth + 7) / 8), s->planeheight[plane]);
311  continue;
312  }
313 
314  if (s->depth <= 8)
315  bilateral_byte(s, in->data[plane], out->data[plane], s->sigmaS, s->sigmaR,
316  s->planewidth[plane], s->planeheight[plane],
317  in->linesize[plane], out->linesize[plane]);
318  else
319  bilateral_word(s, in->data[plane], out->data[plane], s->sigmaS, s->sigmaR,
320  s->planewidth[plane], s->planeheight[plane],
321  in->linesize[plane] / 2, out->linesize[plane] / 2);
322  }
323 
324  av_frame_free(&in);
325  return ff_filter_frame(outlink, out);
326 }
327 
329 {
330  BilateralContext *s = ctx->priv;
331 
332  av_freep(&s->img_out_f);
333  av_freep(&s->img_temp);
334  av_freep(&s->map_factor_a);
335  av_freep(&s->map_factor_b);
338  av_freep(&s->line_factor_a);
339  av_freep(&s->line_factor_b);
340 }
341 
342 static const AVFilterPad bilateral_inputs[] = {
343  {
344  .name = "default",
345  .type = AVMEDIA_TYPE_VIDEO,
346  .config_props = config_input,
347  .filter_frame = filter_frame,
348  },
349  { NULL }
350 };
351 
352 static const AVFilterPad bilateral_outputs[] = {
353  {
354  .name = "default",
355  .type = AVMEDIA_TYPE_VIDEO,
356  },
357  { NULL }
358 };
359 
361  .name = "bilateral",
362  .description = NULL_IF_CONFIG_SMALL("Apply Bilateral filter."),
363  .priv_size = sizeof(BilateralContext),
364  .priv_class = &bilateral_class,
365  .uninit = uninit,
367  .inputs = bilateral_inputs,
368  .outputs = bilateral_outputs,
370 };
#define NULL
Definition: coverity.c:32
#define FLAGS
Definition: vf_bilateral.c:57
#define AV_PIX_FMT_YUVA422P16
Definition: pixfmt.h:440
#define AV_PIX_FMT_YUVA422P9
Definition: pixfmt.h:432
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2549
This structure describes decoded (raw) audio or video data.
Definition: frame.h:300
AVOption.
Definition: opt.h:246
#define AV_PIX_FMT_YUVA420P10
Definition: pixfmt.h:434
#define AV_PIX_FMT_YUV444P14
Definition: pixfmt.h:407
#define AV_PIX_FMT_GBRAP10
Definition: pixfmt.h:417
#define AV_PIX_FMT_YUVA422P10
Definition: pixfmt.h:435
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:2589
Main libavfilter public API header.
const char * desc
Definition: nvenc.c:79
planar GBR 4:4:4 24bpp
Definition: pixfmt.h:168
float * map_factor_a
Definition: vf_bilateral.c:48
#define AV_PIX_FMT_GBRP10
Definition: pixfmt.h:413
#define AV_PIX_FMT_GRAY9
Definition: pixfmt.h:377
#define AV_PIX_FMT_YUV420P12
Definition: pixfmt.h:401
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
float * map_factor_b
Definition: vf_bilateral.c:49
float * slice_factor_b
Definition: vf_bilateral.c:51
uint8_t log2_chroma_w
Amount to shift the luma width right to find the chroma width.
Definition: pixdesc.h:92
void * av_calloc(size_t nmemb, size_t size)
Non-inlined equivalent of av_mallocz_array().
Definition: mem.c:245
float range_table[65536]
Definition: vf_bilateral.c:44
AVFilterFormats * ff_make_format_list(const int *fmts)
Create a list of supported formats.
Definition: formats.c:283
#define AV_PIX_FMT_GRAY10
Definition: pixfmt.h:378
#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:125
static av_cold void uninit(AVFilterContext *ctx)
Definition: vf_bilateral.c:328
const char * name
Pad name.
Definition: internal.h:60
#define AV_PIX_FMT_GRAY12
Definition: pixfmt.h:379
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1075
planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
Definition: pixfmt.h:101
AVComponentDescriptor comp[4]
Parameters that describe how pixels are packed.
Definition: pixdesc.h:117
uint8_t
#define av_cold
Definition: attributes.h:88
AVOptions.
static const AVOption bilateral_options[]
Definition: vf_bilateral.c:59
#define AV_PIX_FMT_YUVA420P9
Definition: pixfmt.h:431
#define AV_PIX_FMT_GBRP9
Definition: pixfmt.h:412
#define OFFSET(x)
Definition: vf_bilateral.c:56
static int config_input(AVFilterLink *inlink)
Definition: vf_bilateral.c:94
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:410
#define AV_PIX_FMT_YUV422P12
Definition: pixfmt.h:402
#define AV_PIX_FMT_YUVA420P16
Definition: pixfmt.h:439
A filter pad used for either input or output.
Definition: internal.h:54
#define expf(x)
Definition: libm.h:283
planar YUV 4:2:2 24bpp, (1 Cr & Cb sample per 2x1 Y & A samples)
Definition: pixfmt.h:176
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:269
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:600
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:186
void * priv
private data for use by the filter
Definition: avfilter.h:353
#define AV_PIX_FMT_YUVA444P16
Definition: pixfmt.h:441
#define AV_PIX_FMT_GBRAP12
Definition: pixfmt.h:418
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:400
float * slice_factor_a
Definition: vf_bilateral.c:50
#define AV_PIX_FMT_GBRAP16
Definition: pixfmt.h:419
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:70
#define BILATERAL(type, name)
Definition: vf_bilateral.c:136
#define AV_PIX_FMT_YUV422P9
Definition: pixfmt.h:395
static const AVFilterPad bilateral_inputs[]
Definition: vf_bilateral.c:342
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
Definition: vf_bilateral.c:292
#define AV_PIX_FMT_GBRP16
Definition: pixfmt.h:416
#define AV_PIX_FMT_GRAY16
Definition: pixfmt.h:381
planar YUV 4:2:0, 12bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV420P and setting col...
Definition: pixfmt.h:78
AVFormatContext * ctx
Definition: movenc.c:48
#define s(width, name)
Definition: cbs_vp9.c:257
AVFILTER_DEFINE_CLASS(bilateral)
#define AV_PIX_FMT_YUVA444P10
Definition: pixfmt.h:436
#define AV_PIX_FMT_YUV444P9
Definition: pixfmt.h:396
#define AV_PIX_FMT_GBRP14
Definition: pixfmt.h:415
static const AVFilterPad outputs[]
Definition: af_acontrast.c:203
#define AV_PIX_FMT_YUV420P16
Definition: pixfmt.h:408
#define AV_PIX_FMT_YUV420P14
Definition: pixfmt.h:405
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_WB64 unsigned int_TMPL AV_WB32 unsigned int_TMPL AV_WB24 unsigned int_TMPL AV_WB16 unsigned int_TMPL byte
Definition: bytestream.h:87
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:331
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:380
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:397
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:144
const char * name
Filter name.
Definition: avfilter.h:148
#define AV_PIX_FMT_YUV440P12
Definition: pixfmt.h:403
#define AV_PIX_FMT_YUV420P9
Definition: pixfmt.h:394
AVFilterLink ** outputs
array of pointers to output links
Definition: avfilter.h:350
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:275
#define AV_PIX_FMT_YUV422P14
Definition: pixfmt.h:406
#define AV_PIX_FMT_GBRP12
Definition: pixfmt.h:414
#define flags(name, subs,...)
Definition: cbs_av1.c:564
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:398
#define AV_PIX_FMT_YUV444P12
Definition: pixfmt.h:404
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:314
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
float * line_factor_a
Definition: vf_bilateral.c:52
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:66
Y , 8bpp.
Definition: pixfmt.h:74
static const AVFilterPad bilateral_outputs[]
Definition: vf_bilateral.c:352
planar GBRA 4:4:4:4 32bpp
Definition: pixfmt.h:215
#define AV_PIX_FMT_YUVA444P9
Definition: pixfmt.h:433
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 * line_factor_b
Definition: vf_bilateral.c:53
AVFilter ff_vf_bilateral
Definition: vf_bilateral.c:360
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:338
static int query_formats(AVFilterContext *ctx)
Definition: vf_bilateral.c:68
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
void av_image_copy_plane(uint8_t *dst, int dst_linesize, const uint8_t *src, int src_linesize, int bytewidth, int height)
Copy image plane from src to dst.
Definition: imgutils.c:338
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:409
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
Definition: frame.c:659
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:58