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 alpha;
45  float range_table[65536];
46 
47  float *img_out_f;
48  float *img_temp;
49  float *map_factor_a;
50  float *map_factor_b;
53  float *line_factor_a;
54  float *line_factor_b;
56 
57 #define OFFSET(x) offsetof(BilateralContext, x)
58 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
59 
60 static const AVOption bilateral_options[] = {
61  { "sigmaS", "set spatial sigma", OFFSET(sigmaS), AV_OPT_TYPE_FLOAT, {.dbl=0.1}, 0.0, 512, FLAGS },
62  { "sigmaR", "set range sigma", OFFSET(sigmaR), AV_OPT_TYPE_FLOAT, {.dbl=0.1}, 0.0, 1, FLAGS },
63  { "planes", "set planes to filter", OFFSET(planes), AV_OPT_TYPE_INT, {.i64=1}, 0, 0xF, FLAGS },
64  { NULL }
65 };
66 
67 AVFILTER_DEFINE_CLASS(bilateral);
68 
70 {
71  static const enum AVPixelFormat pix_fmts[] = {
90  };
91 
92  return ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
93 }
94 
96 {
97  BilateralContext *s = inlink->dst->priv;
99  float inv_sigma_range;
100 
101  s->depth = desc->comp[0].depth;
102  inv_sigma_range = 1.0f / (s->sigmaR * ((1 << s->depth) - 1));
103  s->alpha = expf(-sqrtf(2.f) / s->sigmaS);
104 
105  //compute a lookup table
106  for (int i = 0; i < (1 << s->depth); i++)
107  s->range_table[i] = s->alpha * expf(-i * inv_sigma_range);
108 
109  s->planewidth[1] = s->planewidth[2] = AV_CEIL_RSHIFT(inlink->w, desc->log2_chroma_w);
110  s->planewidth[0] = s->planewidth[3] = inlink->w;
111  s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h);
112  s->planeheight[0] = s->planeheight[3] = inlink->h;
113 
115 
116  s->img_out_f = av_calloc(inlink->w * inlink->h, sizeof(float));
117  s->img_temp = av_calloc(inlink->w * inlink->h, sizeof(float));
118  s->map_factor_a = av_calloc(inlink->w * inlink->h, sizeof(float));
119  s->map_factor_b = av_calloc(inlink->w * inlink->h, sizeof(float));
120  s->slice_factor_a = av_calloc(inlink->w, sizeof(float));
121  s->slice_factor_b = av_calloc(inlink->w, sizeof(float));
122  s->line_factor_a = av_calloc(inlink->w, sizeof(float));
123  s->line_factor_b = av_calloc(inlink->w, sizeof(float));
124 
125  if (!s->img_out_f ||
126  !s->img_temp ||
127  !s->map_factor_a ||
128  !s->map_factor_b ||
129  !s->slice_factor_a ||
130  !s->slice_factor_a ||
131  !s->line_factor_a ||
132  !s->line_factor_a)
133  return AVERROR(ENOMEM);
134 
135  return 0;
136 }
137 
138 #define BILATERAL(type, name) \
139 static void bilateral_##name(BilateralContext *s, const uint8_t *ssrc, uint8_t *ddst, \
140  float sigma_spatial, float sigma_range, \
141  int width, int height, int src_linesize, int dst_linesize) \
142 { \
143  type *dst = (type *)ddst; \
144  const type *src = (const type *)ssrc; \
145  float *img_out_f = s->img_out_f, *img_temp = s->img_temp; \
146  float *map_factor_a = s->map_factor_a, *map_factor_b = s->map_factor_b; \
147  float *slice_factor_a = s->slice_factor_a, *slice_factor_b = s->slice_factor_b; \
148  float *line_factor_a = s->line_factor_a, *line_factor_b = s->line_factor_b; \
149  const float *range_table = s->range_table; \
150  const float alpha = s->alpha; \
151  float ypr, ycr, *ycy, *ypy, *xcy, fp, fc; \
152  const float inv_alpha_ = 1.f - alpha; \
153  float *ycf, *ypf, *xcf, *in_factor; \
154  const type *tcy, *tpy; \
155  int h1; \
156  \
157  for (int y = 0; y < height; y++) { \
158  float *temp_factor_x, *temp_x = &img_temp[y * width]; \
159  const type *in_x = &src[y * src_linesize]; \
160  const type *texture_x = &src[y * src_linesize]; \
161  type tpr; \
162  \
163  *temp_x++ = ypr = *in_x++; \
164  tpr = *texture_x++; \
165  \
166  temp_factor_x = &map_factor_a[y * width]; \
167  *temp_factor_x++ = fp = 1; \
168  \
169  for (int x = 1; x < width; x++) { \
170  float alpha_; \
171  int range_dist; \
172  type tcr = *texture_x++; \
173  type dr = abs(tcr - tpr); \
174  \
175  range_dist = dr; \
176  alpha_ = range_table[range_dist]; \
177  *temp_x++ = ycr = inv_alpha_*(*in_x++) + alpha_*ypr; \
178  tpr = tcr; \
179  ypr = ycr; \
180  *temp_factor_x++ = fc = inv_alpha_ + alpha_ * fp; \
181  fp = fc; \
182  } \
183  --temp_x; *temp_x = 0.5f*((*temp_x) + (*--in_x)); \
184  tpr = *--texture_x; \
185  ypr = *in_x; \
186  \
187  --temp_factor_x; *temp_factor_x = 0.5f*((*temp_factor_x) + 1); \
188  fp = 1; \
189  \
190  for (int x = width - 2; x >= 0; x--) { \
191  type tcr = *--texture_x; \
192  type dr = abs(tcr - tpr); \
193  int range_dist = dr; \
194  float alpha_ = range_table[range_dist]; \
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  in_factor = map_factor_a; \
210  memcpy(map_factor_b, in_factor, sizeof(float) * width); \
211  for (int y = 1; y < height; y++) { \
212  tpy = &src[(y - 1) * src_linesize]; \
213  tcy = &src[y * src_linesize]; \
214  xcy = &img_temp[y * width]; \
215  ypy = &img_out_f[(y - 1) * width]; \
216  ycy = &img_out_f[y * width]; \
217  \
218  xcf = &in_factor[y * width]; \
219  ypf = &map_factor_b[(y - 1) * width]; \
220  ycf = &map_factor_b[y * width]; \
221  for (int x = 0; x < width; x++) { \
222  type dr = abs((*tcy++) - (*tpy++)); \
223  int range_dist = dr; \
224  float alpha_ = range_table[range_dist]; \
225  \
226  *ycy++ = inv_alpha_*(*xcy++) + alpha_*(*ypy++); \
227  *ycf++ = inv_alpha_*(*xcf++) + alpha_*(*ypf++); \
228  } \
229  } \
230  h1 = height - 1; \
231  ycf = line_factor_a; \
232  ypf = line_factor_b; \
233  memcpy(ypf, &in_factor[h1 * width], sizeof(float) * width); \
234  for (int x = 0; x < width; x++) \
235  map_factor_b[h1 * width + x] = 0.5f*(map_factor_b[h1 * width + x] + ypf[x]); \
236  \
237  ycy = slice_factor_a; \
238  ypy = slice_factor_b; \
239  memcpy(ypy, &img_temp[h1 * width], sizeof(float) * width); \
240  for (int x = 0, k = 0; x < width; x++) { \
241  int idx = h1 * width + x; \
242  img_out_f[idx] = 0.5f*(img_out_f[idx] + ypy[k++]) / map_factor_b[h1 * width + x]; \
243  } \
244  \
245  for (int y = h1 - 1; y >= 0; y--) { \
246  float *ycf_, *ypf_, *factor_; \
247  float *ycy_, *ypy_, *out_; \
248  \
249  tpy = &src[(y + 1) * src_linesize]; \
250  tcy = &src[y * src_linesize]; \
251  xcy = &img_temp[y * width]; \
252  ycy_ = ycy; \
253  ypy_ = ypy; \
254  out_ = &img_out_f[y * width]; \
255  \
256  xcf = &in_factor[y * width]; \
257  ycf_ = ycf; \
258  ypf_ = ypf; \
259  factor_ = &map_factor_b[y * width]; \
260  for (int x = 0; x < width; x++) { \
261  type dr = abs((*tcy++) - (*tpy++)); \
262  int range_dist = dr; \
263  float alpha_ = range_table[range_dist]; \
264  float ycc, fcc = inv_alpha_*(*xcf++) + alpha_*(*ypf_++); \
265  \
266  *ycf_++ = fcc; \
267  *factor_ = 0.5f * (*factor_ + fcc); \
268  \
269  ycc = inv_alpha_*(*xcy++) + alpha_*(*ypy_++); \
270  *ycy_++ = ycc; \
271  *out_ = 0.5f * (*out_ + ycc) / (*factor_); \
272  out_++; \
273  factor_++; \
274  } \
275  \
276  ypy = ycy; \
277  ypf = ycf; \
278  } \
279  \
280  for (int i = 0; i < height; i++) \
281  for (int j = 0; j < width; j++) \
282  dst[j + i * dst_linesize] = img_out_f[i * width + j]; \
283 }
284 
286 BILATERAL(uint16_t, word)
287 
289 {
290  AVFilterContext *ctx = inlink->dst;
291  BilateralContext *s = ctx->priv;
292  AVFilterLink *outlink = ctx->outputs[0];
293  AVFrame *out;
294 
295  out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
296  if (!out) {
297  av_frame_free(&in);
298  return AVERROR(ENOMEM);
299  }
300  av_frame_copy_props(out, in);
301 
302  for (int plane = 0; plane < s->nb_planes; plane++) {
303  if (!(s->planes & (1 << plane))) {
304  av_image_copy_plane(out->data[plane], out->linesize[plane],
305  in->data[plane], in->linesize[plane],
306  s->planewidth[plane] * ((s->depth + 7) / 8), s->planeheight[plane]);
307  continue;
308  }
309 
310  if (s->depth <= 8)
311  bilateral_byte(s, in->data[plane], out->data[plane], s->sigmaS, s->sigmaR,
312  s->planewidth[plane], s->planeheight[plane],
313  in->linesize[plane], out->linesize[plane]);
314  else
315  bilateral_word(s, in->data[plane], out->data[plane], s->sigmaS, s->sigmaR,
316  s->planewidth[plane], s->planeheight[plane],
317  in->linesize[plane] / 2, out->linesize[plane] / 2);
318  }
319 
320  av_frame_free(&in);
321  return ff_filter_frame(outlink, out);
322 }
323 
325 {
326  BilateralContext *s = ctx->priv;
327 
328  av_freep(&s->img_out_f);
329  av_freep(&s->img_temp);
330  av_freep(&s->map_factor_a);
331  av_freep(&s->map_factor_b);
334  av_freep(&s->line_factor_a);
335  av_freep(&s->line_factor_b);
336 }
337 
338 static const AVFilterPad bilateral_inputs[] = {
339  {
340  .name = "default",
341  .type = AVMEDIA_TYPE_VIDEO,
342  .config_props = config_input,
343  .filter_frame = filter_frame,
344  },
345  { NULL }
346 };
347 
348 static const AVFilterPad bilateral_outputs[] = {
349  {
350  .name = "default",
351  .type = AVMEDIA_TYPE_VIDEO,
352  },
353  { NULL }
354 };
355 
357  .name = "bilateral",
358  .description = NULL_IF_CONFIG_SMALL("Apply Bilateral filter."),
359  .priv_size = sizeof(BilateralContext),
360  .priv_class = &bilateral_class,
361  .uninit = uninit,
363  .inputs = bilateral_inputs,
364  .outputs = bilateral_outputs,
366 };
#define NULL
Definition: coverity.c:32
#define FLAGS
Definition: vf_bilateral.c:58
#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:308
AVOption.
Definition: opt.h:248
#define AV_PIX_FMT_YUVA420P10
Definition: pixfmt.h:436
#define AV_PIX_FMT_YUV444P14
Definition: pixfmt.h:409
#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.
planar GBR 4:4:4 24bpp
Definition: pixfmt.h:168
float * map_factor_a
Definition: vf_bilateral.c:49
#define AV_PIX_FMT_GBRP10
Definition: pixfmt.h:415
#define AV_PIX_FMT_GRAY9
Definition: pixfmt.h:379
#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
float * map_factor_b
Definition: vf_bilateral.c:50
float * slice_factor_b
Definition: vf_bilateral.c:52
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:45
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
static av_cold void uninit(AVFilterContext *ctx)
Definition: vf_bilateral.c:324
const char * name
Pad name.
Definition: internal.h:60
#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:1091
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.
#define f(width, name)
Definition: cbs_vp9.c:255
static const AVOption bilateral_options[]
Definition: vf_bilateral.c:60
#define AV_PIX_FMT_YUVA420P9
Definition: pixfmt.h:433
#define AV_PIX_FMT_GBRP9
Definition: pixfmt.h:414
#define OFFSET(x)
Definition: vf_bilateral.c:57
static int config_input(AVFilterLink *inlink)
Definition: vf_bilateral.c:95
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
#define AV_PIX_FMT_YUV422P12
Definition: pixfmt.h:404
#define AV_PIX_FMT_YUVA420P16
Definition: pixfmt.h:441
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
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:153
void * priv
private data for use by the filter
Definition: avfilter.h:354
#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
float * slice_factor_a
Definition: vf_bilateral.c:51
#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
#define BILATERAL(type, name)
Definition: vf_bilateral.c:138
#define AV_PIX_FMT_YUV422P9
Definition: pixfmt.h:397
static const AVFilterPad bilateral_inputs[]
Definition: vf_bilateral.c:338
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
Definition: vf_bilateral.c:288
#define AV_PIX_FMT_GBRP16
Definition: pixfmt.h:418
#define AV_PIX_FMT_GRAY16
Definition: pixfmt.h:383
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:438
#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
#define AV_PIX_FMT_YUV420P16
Definition: pixfmt.h:410
#define AV_PIX_FMT_YUV420P14
Definition: pixfmt.h:407
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:339
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
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:351
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:300
#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:560
#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:322
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:53
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:348
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 * line_factor_b
Definition: vf_bilateral.c:54
AVFilter ff_vf_bilateral
Definition: vf_bilateral.c:356
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:339
static int query_formats(AVFilterContext *ctx)
Definition: vf_bilateral.c:69
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: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:671
int i
Definition: input.c:407
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:58