FFmpeg
vf_deblock.c
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1 /*
2  * Copyright (c) 2018 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 /*
22  * Based on paper: A Simple and Efficient Deblocking Algorithm for Low Bit-Rate Video Coding.
23  */
24 
25 #include "libavutil/imgutils.h"
26 #include "libavutil/opt.h"
27 #include "libavutil/pixdesc.h"
28 
29 #include "avfilter.h"
30 #include "formats.h"
31 #include "internal.h"
32 #include "video.h"
33 
35 
36 typedef struct DeblockContext {
37  const AVClass *class;
39  int filter;
40  int block;
41  int planes;
42  float alpha;
43  float beta;
44  float gamma;
45  float delta;
46 
47  int ath;
48  int bth;
49  int gth;
50  int dth;
51  int max;
52  int depth;
53  int bpc;
54  int nb_planes;
55  int planewidth[4];
56  int planeheight[4];
57 
58  void (*deblockh)(uint8_t *dst, ptrdiff_t dst_linesize, int block,
59  int ath, int bth, int gth, int dth, int max);
60  void (*deblockv)(uint8_t *dst, ptrdiff_t dst_linesize, int block,
61  int ath, int bth, int gth, int dth, int max);
63 
65 {
66  static const enum AVPixelFormat pixel_fmts[] = {
86  };
88  if (!formats)
89  return AVERROR(ENOMEM);
90  return ff_set_common_formats(ctx, formats);
91 }
92 
93 #define WEAK_HFILTER(name, type, ldiv) \
94 static void deblockh##name##_weak(uint8_t *dstp, ptrdiff_t dst_linesize, int block, \
95  int ath, int bth, int gth, int dth, int max) \
96 { \
97  type *dst; \
98  int x; \
99  \
100  dst = (type *)dstp; \
101  dst_linesize /= ldiv; \
102  \
103  for (x = 0; x < block; x++) { \
104  int delta = dst[x] - dst[x - dst_linesize]; \
105  int A, B, C, D, a, b, c, d; \
106  \
107  if (FFABS(delta) >= ath || \
108  FFABS(dst[x - 1 * dst_linesize] - dst[x - 2 * dst_linesize]) >= bth || \
109  FFABS(dst[x + 0 * dst_linesize] - dst[x + 1 * dst_linesize]) >= gth) \
110  continue; \
111  \
112  A = dst[x - 2 * dst_linesize]; \
113  B = dst[x - 1 * dst_linesize]; \
114  C = dst[x + 0 * dst_linesize]; \
115  D = dst[x + 1 * dst_linesize]; \
116  \
117  a = A + delta / 8; \
118  b = B + delta / 2; \
119  c = C - delta / 2; \
120  d = D - delta / 8; \
121  \
122  dst[x - 2 * dst_linesize] = av_clip(a, 0, max); \
123  dst[x - 1 * dst_linesize] = av_clip(b, 0, max); \
124  dst[x + 0 * dst_linesize] = av_clip(c, 0, max); \
125  dst[x + 1 * dst_linesize] = av_clip(d, 0, max); \
126  } \
127 }
128 
129 WEAK_HFILTER(8, uint8_t, 1)
130 WEAK_HFILTER(16, uint16_t, 2)
131 
132 #define WEAK_VFILTER(name, type, ldiv) \
133 static void deblockv##name##_weak(uint8_t *dstp, ptrdiff_t dst_linesize, int block, \
134  int ath, int bth, int gth, int dth, int max) \
135 { \
136  type *dst; \
137  int y; \
138  \
139  dst = (type *)dstp; \
140  dst_linesize /= ldiv; \
141  \
142  for (y = 0; y < block; y++) { \
143  int delta = dst[0] - dst[-1]; \
144  int A, B, C, D, a, b, c, d; \
145  \
146  if (FFABS(delta) >= ath || \
147  FFABS(dst[-1] - dst[-2]) >= bth || \
148  FFABS(dst[0] - dst[1]) >= gth) \
149  continue; \
150  \
151  A = dst[-2]; \
152  B = dst[-1]; \
153  C = dst[+0]; \
154  D = dst[+1]; \
155  \
156  a = A + delta / 8; \
157  b = B + delta / 2; \
158  c = C - delta / 2; \
159  d = D - delta / 8; \
160  \
161  dst[-2] = av_clip(a, 0, max); \
162  dst[-1] = av_clip(b, 0, max); \
163  dst[+0] = av_clip(c, 0, max); \
164  dst[+1] = av_clip(d, 0, max); \
165  \
166  dst += dst_linesize; \
167  } \
168 }
169 
170 WEAK_VFILTER(8, uint8_t, 1)
171 WEAK_VFILTER(16, uint16_t, 2)
172 
173 #define STRONG_HFILTER(name, type, ldiv) \
174 static void deblockh##name##_strong(uint8_t *dstp, ptrdiff_t dst_linesize, int block,\
175  int ath, int bth, int gth, int dth, int max) \
176 { \
177  type *dst; \
178  int x; \
179  \
180  dst = (type *)dstp; \
181  dst_linesize /= ldiv; \
182  \
183  for (x = 0; x < block; x++) { \
184  int A, B, C, D, E, F, a, b, c, d, e, f; \
185  int delta = dst[x] - dst[x - dst_linesize]; \
186  \
187  if (FFABS(delta) >= ath || \
188  FFABS(dst[x - 1 * dst_linesize] - dst[x - 2 * dst_linesize]) >= bth || \
189  FFABS(dst[x + 1 * dst_linesize] - dst[x + 2 * dst_linesize]) >= gth || \
190  FFABS(dst[x + 0 * dst_linesize] - dst[x + 1 * dst_linesize]) >= dth) \
191  continue; \
192  \
193  A = dst[x - 3 * dst_linesize]; \
194  B = dst[x - 2 * dst_linesize]; \
195  C = dst[x - 1 * dst_linesize]; \
196  D = dst[x + 0 * dst_linesize]; \
197  E = dst[x + 1 * dst_linesize]; \
198  F = dst[x + 2 * dst_linesize]; \
199  \
200  a = A + delta / 8; \
201  b = B + delta / 4; \
202  c = C + delta / 2; \
203  d = D - delta / 2; \
204  e = E - delta / 4; \
205  f = F - delta / 8; \
206  \
207  dst[x - 3 * dst_linesize] = av_clip(a, 0, max); \
208  dst[x - 2 * dst_linesize] = av_clip(b, 0, max); \
209  dst[x - 1 * dst_linesize] = av_clip(c, 0, max); \
210  dst[x + 0 * dst_linesize] = av_clip(d, 0, max); \
211  dst[x + 1 * dst_linesize] = av_clip(e, 0, max); \
212  dst[x + 2 * dst_linesize] = av_clip(f, 0, max); \
213  } \
214 }
215 
216 STRONG_HFILTER(8, uint8_t, 1)
217 STRONG_HFILTER(16, uint16_t, 2)
218 
219 #define STRONG_VFILTER(name, type, ldiv) \
220 static void deblockv##name##_strong(uint8_t *dstp, ptrdiff_t dst_linesize, int block,\
221  int ath, int bth, int gth, int dth, int max) \
222 { \
223  type *dst; \
224  int y; \
225  \
226  dst = (type *)dstp; \
227  dst_linesize /= ldiv; \
228  \
229  for (y = 0; y < block; y++) { \
230  int A, B, C, D, E, F, a, b, c, d, e, f; \
231  int delta = dst[0] - dst[-1]; \
232  \
233  if (FFABS(delta) >= ath || \
234  FFABS(dst[-1] - dst[-2]) >= bth || \
235  FFABS(dst[+1] - dst[+2]) >= gth || \
236  FFABS(dst[+0] - dst[+1]) >= dth) \
237  continue; \
238  \
239  A = dst[-3]; \
240  B = dst[-2]; \
241  C = dst[-1]; \
242  D = dst[+0]; \
243  E = dst[+1]; \
244  F = dst[+2]; \
245  \
246  a = A + delta / 8; \
247  b = B + delta / 4; \
248  c = C + delta / 2; \
249  d = D - delta / 2; \
250  e = E - delta / 4; \
251  f = F - delta / 8; \
252  \
253  dst[-3] = av_clip(a, 0, max); \
254  dst[-2] = av_clip(b, 0, max); \
255  dst[-1] = av_clip(c, 0, max); \
256  dst[+0] = av_clip(d, 0, max); \
257  dst[+1] = av_clip(e, 0, max); \
258  dst[+2] = av_clip(f, 0, max); \
259  \
260  dst += dst_linesize; \
261  } \
262 }
263 
264 STRONG_VFILTER(8, uint8_t, 1)
265 STRONG_VFILTER(16, uint16_t, 2)
266 
267 static int config_output(AVFilterLink *outlink)
268 {
269  AVFilterContext *ctx = outlink->src;
270  DeblockContext *s = ctx->priv;
271  AVFilterLink *inlink = ctx->inputs[0];
272 
273  s->desc = av_pix_fmt_desc_get(outlink->format);
274  if (!s->desc)
275  return AVERROR_BUG;
276  s->nb_planes = av_pix_fmt_count_planes(outlink->format);
277  s->depth = s->desc->comp[0].depth;
278  s->bpc = (s->depth + 7) / 8;
279  s->max = (1 << s->depth) - 1;
280  s->ath = s->alpha * s->max;
281  s->bth = s->beta * s->max;
282  s->gth = s->gamma * s->max;
283  s->dth = s->delta * s->max;
284 
285  if (s->depth <= 8 && s->filter == WEAK) {
286  s->deblockh = deblockh8_weak;
287  s->deblockv = deblockv8_weak;
288  } else if (s->depth >= 8 && s->filter == WEAK) {
289  s->deblockh = deblockh16_weak;
290  s->deblockv = deblockv16_weak;
291  }
292  if (s->depth <= 8 && s->filter == STRONG) {
293  s->deblockh = deblockh8_strong;
294  s->deblockv = deblockv8_strong;
295  } else if (s->depth >= 8 && s->filter == STRONG) {
296  s->deblockh = deblockh16_strong;
297  s->deblockv = deblockv16_strong;
298  }
299 
300  s->planewidth[1] = s->planewidth[2] = AV_CEIL_RSHIFT(inlink->w, s->desc->log2_chroma_w);
301  s->planewidth[0] = s->planewidth[3] = inlink->w;
302 
303  s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, s->desc->log2_chroma_h);
304  s->planeheight[0] = s->planeheight[3] = inlink->h;
305 
306  return 0;
307 }
308 
310 {
311  AVFilterContext *ctx = inlink->dst;
312  AVFilterLink *outlink = ctx->outputs[0];
313  DeblockContext *s = ctx->priv;
314  const int block = s->block;
315  AVFrame *out;
316  int plane, x, y;
317 
318  if (av_frame_is_writable(in)) {
319  out = in;
320  } else {
321  out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
322  if (!out) {
323  av_frame_free(&in);
324  return AVERROR(ENOMEM);
325  }
326  av_frame_copy_props(out, in);
327  }
328 
329  for (plane = 0; plane < s->nb_planes; plane++) {
330  const int width = s->planewidth[plane];
331  const int height = s->planeheight[plane];
332  const uint8_t *src = (const uint8_t *)in->data[plane];
333  uint8_t *dst = (uint8_t *)out->data[plane];
334 
335  if (in != out)
336  av_image_copy_plane(dst, out->linesize[plane],
337  src, in->linesize[plane],
338  width * s->bpc, height);
339 
340  if (!((1 << plane) & s->planes))
341  continue;
342 
343  for (x = block; x < width; x += block)
344  s->deblockv(dst + x * s->bpc, out->linesize[plane],
345  FFMIN(block, height), s->ath, s->bth, s->gth, s->dth, s->max);
346 
347  for (y = block; y < height; y += block) {
348  dst += out->linesize[plane] * block;
349 
350  s->deblockh(dst, out->linesize[plane],
351  FFMIN(block, width),
352  s->ath, s->bth, s->gth, s->dth, s->max);
353 
354  for (x = block; x < width; x += block) {
355  s->deblockh(dst + x * s->bpc, out->linesize[plane],
356  FFMIN(block, width - x),
357  s->ath, s->bth, s->gth, s->dth, s->max);
358  s->deblockv(dst + x * s->bpc, out->linesize[plane],
359  FFMIN(block, height - y),
360  s->ath, s->bth, s->gth, s->dth, s->max);
361  }
362  }
363  }
364 
365  if (in != out)
366  av_frame_free(&in);
367  return ff_filter_frame(outlink, out);
368 }
369 
370 #define OFFSET(x) offsetof(DeblockContext, x)
371 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM
372 
373 static const AVOption deblock_options[] = {
374  { "filter", "set type of filter", OFFSET(filter), AV_OPT_TYPE_INT, {.i64=STRONG},0, 1, FLAGS, "filter" },
375  { "weak", 0, 0, AV_OPT_TYPE_CONST, {.i64=WEAK}, 0, 0, FLAGS, "filter" },
376  { "strong", 0, 0, AV_OPT_TYPE_CONST, {.i64=STRONG},0, 0, FLAGS, "filter" },
377  { "block", "set size of block", OFFSET(block), AV_OPT_TYPE_INT, {.i64=8}, 4, 512, FLAGS },
378  { "alpha", "set 1st detection threshold", OFFSET(alpha), AV_OPT_TYPE_FLOAT, {.dbl=.098}, 0, 1, FLAGS },
379  { "beta", "set 2nd detection threshold", OFFSET(beta), AV_OPT_TYPE_FLOAT, {.dbl=.05}, 0, 1, FLAGS },
380  { "gamma", "set 3rd detection threshold", OFFSET(gamma), AV_OPT_TYPE_FLOAT, {.dbl=.05}, 0, 1, FLAGS },
381  { "delta", "set 4th detection threshold", OFFSET(delta), AV_OPT_TYPE_FLOAT, {.dbl=.05}, 0, 1, FLAGS },
382  { "planes", "set planes to filter", OFFSET(planes), AV_OPT_TYPE_INT, {.i64=15}, 0, 15, FLAGS },
383  { NULL },
384 };
385 
386 static const AVFilterPad inputs[] = {
387  {
388  .name = "default",
389  .type = AVMEDIA_TYPE_VIDEO,
390  .filter_frame = filter_frame,
391  },
392  { NULL }
393 };
394 
395 static const AVFilterPad outputs[] = {
396  {
397  .name = "default",
398  .type = AVMEDIA_TYPE_VIDEO,
399  .config_props = config_output,
400  },
401  { NULL }
402 };
403 
404 AVFILTER_DEFINE_CLASS(deblock);
405 
407  .name = "deblock",
408  .description = NULL_IF_CONFIG_SMALL("Deblock video."),
409  .priv_size = sizeof(DeblockContext),
410  .priv_class = &deblock_class,
412  .inputs = inputs,
413  .outputs = outputs,
415 };
#define NULL
Definition: coverity.c:32
#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.
AVFilter ff_vf_deblock
Definition: vf_deblock.c:406
planar GBR 4:4:4 24bpp
Definition: pixfmt.h:168
#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
static const AVOption deblock_options[]
Definition: vf_deblock.c:373
uint8_t log2_chroma_w
Amount to shift the luma width right to find the chroma width.
Definition: pixdesc.h:92
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
const char * name
Pad name.
Definition: internal.h:60
#define AV_PIX_FMT_GRAY12
Definition: pixfmt.h:379
AVFilterLink ** inputs
array of pointers to input links
Definition: avfilter.h:346
static const AVFilterPad inputs[]
Definition: vf_deblock.c:386
FilterType
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
AVFILTER_DEFINE_CLASS(deblock)
AVOptions.
#define AV_PIX_FMT_YUVA420P9
Definition: pixfmt.h:431
#define AV_PIX_FMT_GBRP9
Definition: pixfmt.h:412
#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: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 src
Definition: vp8dsp.c:254
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: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
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
Definition: vf_deblock.c:309
#define AV_PIX_FMT_GBRAP16
Definition: pixfmt.h:419
int planewidth[4]
Definition: vf_deblock.c:55
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:70
#define AV_PIX_FMT_YUV422P9
Definition: pixfmt.h:395
#define AV_PIX_FMT_GBRP16
Definition: pixfmt.h:416
#define AV_PIX_FMT_GRAY16
Definition: pixfmt.h:381
#define FFMIN(a, b)
Definition: common.h:96
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_YUVA444P12
Definition: pixfmt.h:438
#define width
typedef void(APIENTRY *FF_PFNGLACTIVETEXTUREPROC)(GLenum texture)
AVFormatContext * ctx
Definition: movenc.c:48
#define WEAK_HFILTER(name, type, ldiv)
Definition: vf_deblock.c:93
#define s(width, name)
Definition: cbs_vp9.c:257
static const AVFilterPad outputs[]
Definition: vf_deblock.c:395
#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
const AVPixFmtDescriptor * desc
Definition: vf_deblock.c:38
#define AV_PIX_FMT_YUV420P16
Definition: pixfmt.h:408
#define AV_PIX_FMT_YUV420P14
Definition: pixfmt.h:405
int av_frame_is_writable(AVFrame *frame)
Check if the frame data is writable.
Definition: frame.c:595
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
#define AVERROR_BUG
Internal bug, also see AVERROR_BUG2.
Definition: error.h:50
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 int config_output(AVFilterLink *outlink)
Definition: vf_deblock.c:267
#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
int planeheight[4]
Definition: vf_deblock.c:56
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
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:66
Y , 8bpp.
Definition: pixfmt.h:74
#define STRONG_HFILTER(name, type, ldiv)
Definition: vf_deblock.c:173
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
#define FLAGS
Definition: vf_deblock.c:371
void(* deblockh)(uint8_t *dst, ptrdiff_t dst_linesize, int block, int ath, int bth, int gth, int dth, int max)
Definition: vf_deblock.c:58
static int query_formats(AVFilterContext *ctx)
Definition: vf_deblock.c:64
#define STRONG_VFILTER(name, type, ldiv)
Definition: vf_deblock.c:219
#define OFFSET(x)
Definition: vf_deblock.c:370
A list of supported formats for one end of a filter link.
Definition: formats.h:64
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
void(* deblockv)(uint8_t *dst, ptrdiff_t dst_linesize, int block, int ath, int bth, int gth, int dth, int max)
Definition: vf_deblock.c:60
FILE * out
Definition: movenc.c:54
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
Definition: pixfmt.h:99
formats
Definition: signature.h:48
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
#define WEAK_VFILTER(name, type, ldiv)
Definition: vf_deblock.c:132
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_PIX_FMT_YUVA422P12
Definition: pixfmt.h:437
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:58