FFmpeg
vf_spp.c
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1 /*
2  * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
3  * Copyright (c) 2013 Clément Bœsch <u pkh me>
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or modify
8  * it under the terms of the GNU General Public License as published by
9  * the Free Software Foundation; either version 2 of the License, or
10  * (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15  * GNU General Public License for more details.
16  *
17  * You should have received a copy of the GNU General Public License along
18  * with FFmpeg; if not, write to the Free Software Foundation, Inc.,
19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
20  */
21 
22 /**
23  * @file
24  * Simple post processing filter
25  *
26  * This implementation is based on an algorithm described in
27  * "Aria Nosratinia Embedded Post-Processing for
28  * Enhancement of Compressed Images (1999)"
29  *
30  * Originally written by Michael Niedermayer for the MPlayer project, and
31  * ported by Clément Bœsch for FFmpeg.
32  */
33 
34 #include "libavutil/imgutils.h"
35 #include "libavutil/mem_internal.h"
36 #include "libavutil/opt.h"
37 #include "libavutil/pixdesc.h"
38 #include "internal.h"
39 #include "qp_table.h"
40 #include "vf_spp.h"
41 
42 enum mode {
46 };
47 
48 static const AVClass *child_class_iterate(void **iter)
49 {
50  const AVClass *c = *iter ? NULL : avcodec_dct_get_class();
51  *iter = (void*)(uintptr_t)c;
52  return c;
53 }
54 
55 static void *child_next(void *obj, void *prev)
56 {
57  SPPContext *s = obj;
58  return prev ? NULL : s->dct;
59 }
60 
61 #define OFFSET(x) offsetof(SPPContext, x)
62 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
63 #define TFLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
64 static const AVOption spp_options[] = {
65  { "quality", "set quality", OFFSET(log2_count), AV_OPT_TYPE_INT, {.i64 = 3}, 0, MAX_LEVEL, TFLAGS },
66  { "qp", "force a constant quantizer parameter", OFFSET(qp), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 63, FLAGS },
67  { "mode", "set thresholding mode", OFFSET(mode), AV_OPT_TYPE_INT, {.i64 = MODE_HARD}, 0, NB_MODES - 1, FLAGS, "mode" },
68  { "hard", "hard thresholding", 0, AV_OPT_TYPE_CONST, {.i64 = MODE_HARD}, INT_MIN, INT_MAX, FLAGS, "mode" },
69  { "soft", "soft thresholding", 0, AV_OPT_TYPE_CONST, {.i64 = MODE_SOFT}, INT_MIN, INT_MAX, FLAGS, "mode" },
70  { "use_bframe_qp", "use B-frames' QP", OFFSET(use_bframe_qp), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, FLAGS },
71  { NULL }
72 };
73 
74 static const AVClass spp_class = {
75  .class_name = "spp",
76  .item_name = av_default_item_name,
77  .option = spp_options,
78  .version = LIBAVUTIL_VERSION_INT,
79  .category = AV_CLASS_CATEGORY_FILTER,
80  .child_class_iterate = child_class_iterate,
82 };
83 
84 // XXX: share between filters?
85 DECLARE_ALIGNED(8, static const uint8_t, ldither)[8][8] = {
86  { 0, 48, 12, 60, 3, 51, 15, 63 },
87  { 32, 16, 44, 28, 35, 19, 47, 31 },
88  { 8, 56, 4, 52, 11, 59, 7, 55 },
89  { 40, 24, 36, 20, 43, 27, 39, 23 },
90  { 2, 50, 14, 62, 1, 49, 13, 61 },
91  { 34, 18, 46, 30, 33, 17, 45, 29 },
92  { 10, 58, 6, 54, 9, 57, 5, 53 },
93  { 42, 26, 38, 22, 41, 25, 37, 21 },
94 };
95 
96 static const uint8_t offset[127][2] = {
97  {0,0},
98  {0,0}, {4,4}, // quality = 1
99  {0,0}, {2,2}, {6,4}, {4,6}, // quality = 2
100  {0,0}, {5,1}, {2,2}, {7,3}, {4,4}, {1,5}, {6,6}, {3,7}, // quality = 3
101 
102  {0,0}, {4,0}, {1,1}, {5,1}, {3,2}, {7,2}, {2,3}, {6,3}, // quality = 4
103  {0,4}, {4,4}, {1,5}, {5,5}, {3,6}, {7,6}, {2,7}, {6,7},
104 
105  {0,0}, {0,2}, {0,4}, {0,6}, {1,1}, {1,3}, {1,5}, {1,7}, // quality = 5
106  {2,0}, {2,2}, {2,4}, {2,6}, {3,1}, {3,3}, {3,5}, {3,7},
107  {4,0}, {4,2}, {4,4}, {4,6}, {5,1}, {5,3}, {5,5}, {5,7},
108  {6,0}, {6,2}, {6,4}, {6,6}, {7,1}, {7,3}, {7,5}, {7,7},
109 
110  {0,0}, {4,4}, {0,4}, {4,0}, {2,2}, {6,6}, {2,6}, {6,2}, // quality = 6
111  {0,2}, {4,6}, {0,6}, {4,2}, {2,0}, {6,4}, {2,4}, {6,0},
112  {1,1}, {5,5}, {1,5}, {5,1}, {3,3}, {7,7}, {3,7}, {7,3},
113  {1,3}, {5,7}, {1,7}, {5,3}, {3,1}, {7,5}, {3,5}, {7,1},
114  {0,1}, {4,5}, {0,5}, {4,1}, {2,3}, {6,7}, {2,7}, {6,3},
115  {0,3}, {4,7}, {0,7}, {4,3}, {2,1}, {6,5}, {2,5}, {6,1},
116  {1,0}, {5,4}, {1,4}, {5,0}, {3,2}, {7,6}, {3,6}, {7,2},
117  {1,2}, {5,6}, {1,6}, {5,2}, {3,0}, {7,4}, {3,4}, {7,0},
118 };
119 
120 static void hardthresh_c(int16_t dst[64], const int16_t src[64],
121  int qp, const uint8_t *permutation)
122 {
123  int i;
124  int bias = 0; // FIXME
125 
126  unsigned threshold1 = qp * ((1<<4) - bias) - 1;
127  unsigned threshold2 = threshold1 << 1;
128 
129  memset(dst, 0, 64 * sizeof(dst[0]));
130  dst[0] = (src[0] + 4) >> 3;
131 
132  for (i = 1; i < 64; i++) {
133  int level = src[i];
134  if (((unsigned)(level + threshold1)) > threshold2) {
135  const int j = permutation[i];
136  dst[j] = (level + 4) >> 3;
137  }
138  }
139 }
140 
141 static void softthresh_c(int16_t dst[64], const int16_t src[64],
142  int qp, const uint8_t *permutation)
143 {
144  int i;
145  int bias = 0; //FIXME
146 
147  unsigned threshold1 = qp * ((1<<4) - bias) - 1;
148  unsigned threshold2 = threshold1 << 1;
149 
150  memset(dst, 0, 64 * sizeof(dst[0]));
151  dst[0] = (src[0] + 4) >> 3;
152 
153  for (i = 1; i < 64; i++) {
154  int level = src[i];
155  if (((unsigned)(level + threshold1)) > threshold2) {
156  const int j = permutation[i];
157  if (level > 0) dst[j] = (level - threshold1 + 4) >> 3;
158  else dst[j] = (level + threshold1 + 4) >> 3;
159  }
160  }
161 }
162 
163 static void store_slice_c(uint8_t *dst, const int16_t *src,
164  int dst_linesize, int src_linesize,
165  int width, int height, int log2_scale,
166  const uint8_t dither[8][8])
167 {
168  int y, x;
169 
170 #define STORE(pos) do { \
171  temp = ((src[x + y*src_linesize + pos] << log2_scale) + d[pos]) >> 6; \
172  if (temp & 0x100) \
173  temp = ~(temp >> 31); \
174  dst[x + y*dst_linesize + pos] = temp; \
175 } while (0)
176 
177  for (y = 0; y < height; y++) {
178  const uint8_t *d = dither[y];
179  for (x = 0; x < width; x += 8) {
180  int temp;
181  STORE(0);
182  STORE(1);
183  STORE(2);
184  STORE(3);
185  STORE(4);
186  STORE(5);
187  STORE(6);
188  STORE(7);
189  }
190  }
191 }
192 
193 static void store_slice16_c(uint16_t *dst, const int16_t *src,
194  int dst_linesize, int src_linesize,
195  int width, int height, int log2_scale,
196  const uint8_t dither[8][8], int depth)
197 {
198  int y, x;
199  unsigned int mask = -1<<depth;
200 
201 #define STORE16(pos) do { \
202  temp = ((src[x + y*src_linesize + pos] << log2_scale) + (d[pos]>>1)) >> 5; \
203  if (temp & mask ) \
204  temp = ~(temp >> 31); \
205  dst[x + y*dst_linesize + pos] = temp; \
206 } while (0)
207 
208  for (y = 0; y < height; y++) {
209  const uint8_t *d = dither[y];
210  for (x = 0; x < width; x += 8) {
211  int temp;
212  STORE16(0);
213  STORE16(1);
214  STORE16(2);
215  STORE16(3);
216  STORE16(4);
217  STORE16(5);
218  STORE16(6);
219  STORE16(7);
220  }
221  }
222 }
223 
224 static inline void add_block(uint16_t *dst, int linesize, const int16_t block[64])
225 {
226  int y;
227 
228  for (y = 0; y < 8; y++) {
229  dst[0 + y*linesize] += block[0 + y*8];
230  dst[1 + y*linesize] += block[1 + y*8];
231  dst[2 + y*linesize] += block[2 + y*8];
232  dst[3 + y*linesize] += block[3 + y*8];
233  dst[4 + y*linesize] += block[4 + y*8];
234  dst[5 + y*linesize] += block[5 + y*8];
235  dst[6 + y*linesize] += block[6 + y*8];
236  dst[7 + y*linesize] += block[7 + y*8];
237  }
238 }
239 
240 static void filter(SPPContext *p, uint8_t *dst, uint8_t *src,
241  int dst_linesize, int src_linesize, int width, int height,
242  const uint8_t *qp_table, int qp_stride, int is_luma, int depth)
243 {
244  int x, y, i;
245  const int count = 1 << p->log2_count;
246  const int linesize = is_luma ? p->temp_linesize : FFALIGN(width+16, 16);
247  DECLARE_ALIGNED(16, uint64_t, block_align)[32];
248  int16_t *block = (int16_t *)block_align;
249  int16_t *block2 = (int16_t *)(block_align + 16);
250  uint16_t *psrc16 = (uint16_t*)p->src;
251  const int sample_bytes = (depth+7) / 8;
252 
253  for (y = 0; y < height; y++) {
254  int index = 8 + 8*linesize + y*linesize;
255  memcpy(p->src + index*sample_bytes, src + y*src_linesize, width*sample_bytes);
256  if (sample_bytes == 1) {
257  for (x = 0; x < 8; x++) {
258  p->src[index - x - 1] = p->src[index + x ];
259  p->src[index + width + x ] = p->src[index + width - x - 1];
260  }
261  } else {
262  for (x = 0; x < 8; x++) {
263  psrc16[index - x - 1] = psrc16[index + x ];
264  psrc16[index + width + x ] = psrc16[index + width - x - 1];
265  }
266  }
267  }
268  for (y = 0; y < 8; y++) {
269  memcpy(p->src + ( 7-y)*linesize * sample_bytes, p->src + ( y+8)*linesize * sample_bytes, linesize * sample_bytes);
270  memcpy(p->src + (height+8+y)*linesize * sample_bytes, p->src + (height-y+7)*linesize * sample_bytes, linesize * sample_bytes);
271  }
272 
273  for (y = 0; y < height + 8; y += 8) {
274  memset(p->temp + (8 + y) * linesize, 0, 8 * linesize * sizeof(*p->temp));
275  for (x = 0; x < width + 8; x += 8) {
276  int qp;
277 
278  if (p->qp) {
279  qp = p->qp;
280  } else{
281  const int qps = 3 + is_luma;
282  qp = qp_table[(FFMIN(x, width - 1) >> qps) + (FFMIN(y, height - 1) >> qps) * qp_stride];
283  qp = FFMAX(1, ff_norm_qscale(qp, p->qscale_type));
284  }
285  for (i = 0; i < count; i++) {
286  const int x1 = x + offset[i + count - 1][0];
287  const int y1 = y + offset[i + count - 1][1];
288  const int index = x1 + y1*linesize;
289  p->dct->get_pixels_unaligned(block, p->src + sample_bytes*index, sample_bytes*linesize);
290  p->dct->fdct(block);
291  p->requantize(block2, block, qp, p->dct->idct_permutation);
292  p->dct->idct(block2);
293  add_block(p->temp + index, linesize, block2);
294  }
295  }
296  if (y) {
297  if (sample_bytes == 1) {
298  p->store_slice(dst + (y - 8) * dst_linesize, p->temp + 8 + y*linesize,
299  dst_linesize, linesize, width,
300  FFMIN(8, height + 8 - y), MAX_LEVEL - p->log2_count,
301  ldither);
302  } else {
303  store_slice16_c((uint16_t*)(dst + (y - 8) * dst_linesize), p->temp + 8 + y*linesize,
304  dst_linesize/2, linesize, width,
305  FFMIN(8, height + 8 - y), MAX_LEVEL - p->log2_count,
306  ldither, depth);
307  }
308  }
309  }
310 }
311 
313 {
314  static const enum AVPixelFormat pix_fmts[] = {
329  };
330 
332  if (!fmts_list)
333  return AVERROR(ENOMEM);
334  return ff_set_common_formats(ctx, fmts_list);
335 }
336 
338 {
339  SPPContext *s = inlink->dst->priv;
340  const int h = FFALIGN(inlink->h + 16, 16);
342  const int bps = desc->comp[0].depth;
343 
344  av_opt_set_int(s->dct, "bits_per_sample", bps, 0);
345  avcodec_dct_init(s->dct);
346 
347  if (ARCH_X86)
349 
350  s->hsub = desc->log2_chroma_w;
351  s->vsub = desc->log2_chroma_h;
352  s->temp_linesize = FFALIGN(inlink->w + 16, 16);
353  s->temp = av_malloc_array(s->temp_linesize, h * sizeof(*s->temp));
354  s->src = av_malloc_array(s->temp_linesize, h * sizeof(*s->src) * 2);
355 
356  if (!s->temp || !s->src)
357  return AVERROR(ENOMEM);
358  return 0;
359 }
360 
362 {
363  AVFilterContext *ctx = inlink->dst;
364  SPPContext *s = ctx->priv;
365  AVFilterLink *outlink = ctx->outputs[0];
366  AVFrame *out = in;
367  int qp_stride = 0;
368  int8_t *qp_table = NULL;
370  const int depth = desc->comp[0].depth;
371  int ret = 0;
372 
373  /* if we are not in a constant user quantizer mode and we don't want to use
374  * the quantizers from the B-frames (B-frames often have a higher QP), we
375  * need to save the qp table from the last non B-frame; this is what the
376  * following code block does */
377  if (!s->qp && (s->use_bframe_qp || in->pict_type != AV_PICTURE_TYPE_B)) {
378  ret = ff_qp_table_extract(in, &qp_table, &qp_stride, NULL, &s->qscale_type);
379  if (ret < 0) {
380  av_frame_free(&in);
381  return ret;
382  }
383 
384  if (!s->use_bframe_qp && in->pict_type != AV_PICTURE_TYPE_B) {
385  av_freep(&s->non_b_qp_table);
386  s->non_b_qp_table = qp_table;
387  s->non_b_qp_stride = qp_stride;
388  }
389  }
390 
391  if (s->log2_count && !ctx->is_disabled) {
392  if (!s->use_bframe_qp && s->non_b_qp_table) {
393  qp_table = s->non_b_qp_table;
394  qp_stride = s->non_b_qp_stride;
395  }
396 
397  if (qp_table || s->qp) {
398  const int cw = AV_CEIL_RSHIFT(inlink->w, s->hsub);
399  const int ch = AV_CEIL_RSHIFT(inlink->h, s->vsub);
400 
401  /* get a new frame if in-place is not possible or if the dimensions
402  * are not multiple of 8 */
403  if (!av_frame_is_writable(in) || (inlink->w & 7) || (inlink->h & 7)) {
404  const int aligned_w = FFALIGN(inlink->w, 8);
405  const int aligned_h = FFALIGN(inlink->h, 8);
406 
407  out = ff_get_video_buffer(outlink, aligned_w, aligned_h);
408  if (!out) {
409  av_frame_free(&in);
410  ret = AVERROR(ENOMEM);
411  goto finish;
412  }
414  out->width = in->width;
415  out->height = in->height;
416  }
417 
418  filter(s, out->data[0], in->data[0], out->linesize[0], in->linesize[0], inlink->w, inlink->h, qp_table, qp_stride, 1, depth);
419 
420  if (out->data[2]) {
421  filter(s, out->data[1], in->data[1], out->linesize[1], in->linesize[1], cw, ch, qp_table, qp_stride, 0, depth);
422  filter(s, out->data[2], in->data[2], out->linesize[2], in->linesize[2], cw, ch, qp_table, qp_stride, 0, depth);
423  }
424  emms_c();
425  }
426  }
427 
428  if (in != out) {
429  if (in->data[3])
430  av_image_copy_plane(out->data[3], out->linesize[3],
431  in ->data[3], in ->linesize[3],
432  inlink->w, inlink->h);
433  av_frame_free(&in);
434  }
435  ret = ff_filter_frame(outlink, out);
436 finish:
437  if (qp_table != s->non_b_qp_table)
438  av_freep(&qp_table);
439  return ret;
440 }
441 
442 static int process_command(AVFilterContext *ctx, const char *cmd, const char *args,
443  char *res, int res_len, int flags)
444 {
445  SPPContext *s = ctx->priv;
446 
447  if (!strcmp(cmd, "level") || !strcmp(cmd, "quality")) {
448  if (!strcmp(args, "max"))
449  s->log2_count = MAX_LEVEL;
450  else
451  s->log2_count = av_clip(strtol(args, NULL, 10), 0, MAX_LEVEL);
452  return 0;
453  }
454  return AVERROR(ENOSYS);
455 }
456 
458 {
459  SPPContext *s = ctx->priv;
460  int ret;
461 
462  s->dct = avcodec_dct_alloc();
463  if (!s->dct)
464  return AVERROR(ENOMEM);
465 
466  if (opts) {
467  AVDictionaryEntry *e = NULL;
468 
469  while ((e = av_dict_get(*opts, "", e, AV_DICT_IGNORE_SUFFIX))) {
470  if ((ret = av_opt_set(s->dct, e->key, e->value, 0)) < 0)
471  return ret;
472  }
474  }
475 
476  s->store_slice = store_slice_c;
477  switch (s->mode) {
478  case MODE_HARD: s->requantize = hardthresh_c; break;
479  case MODE_SOFT: s->requantize = softthresh_c; break;
480  }
481  return 0;
482 }
483 
485 {
486  SPPContext *s = ctx->priv;
487 
488  av_freep(&s->temp);
489  av_freep(&s->src);
490  av_freep(&s->dct);
491  av_freep(&s->non_b_qp_table);
492 }
493 
494 static const AVFilterPad spp_inputs[] = {
495  {
496  .name = "default",
497  .type = AVMEDIA_TYPE_VIDEO,
498  .config_props = config_input,
499  .filter_frame = filter_frame,
500  },
501  { NULL }
502 };
503 
504 static const AVFilterPad spp_outputs[] = {
505  {
506  .name = "default",
507  .type = AVMEDIA_TYPE_VIDEO,
508  },
509  { NULL }
510 };
511 
513  .name = "spp",
514  .description = NULL_IF_CONFIG_SMALL("Apply a simple post processing filter."),
515  .priv_size = sizeof(SPPContext),
516  .init_dict = init_dict,
517  .uninit = uninit,
519  .inputs = spp_inputs,
520  .outputs = spp_outputs,
522  .priv_class = &spp_class,
524 };
ff_get_video_buffer
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.
Definition: video.c:97
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
level
uint8_t level
Definition: svq3.c:204
av_clip
#define av_clip
Definition: common.h:96
qp_table.h
AVERROR
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
opt.h
ff_make_format_list
AVFilterFormats * ff_make_format_list(const int *fmts)
Create a list of supported formats.
Definition: formats.c:286
mem_internal.h
out
FILE * out
Definition: movenc.c:54
filter_frame
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
Definition: vf_spp.c:361
ff_filter_frame
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:978
av_pix_fmt_desc_get
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2540
inlink
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
Definition: filter_design.txt:212
spp_options
static const AVOption spp_options[]
Definition: vf_spp.c:64
av_frame_free
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:112
MODE_SOFT
@ MODE_SOFT
Definition: vf_spp.c:44
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:303
pixdesc.h
index
fg index
Definition: ffmpeg_filter.c:168
ldither
static const uint8_t ldither[8][8]
Definition: vf_spp.c:85
AVFrame::width
int width
Definition: frame.h:361
AVOption
AVOption.
Definition: opt.h:247
AV_PIX_FMT_YUV420P10
#define AV_PIX_FMT_YUV420P10
Definition: pixfmt.h:389
AV_DICT_IGNORE_SUFFIX
#define AV_DICT_IGNORE_SUFFIX
Return first entry in a dictionary whose first part corresponds to the search key,...
Definition: dict.h:68
AV_PIX_FMT_YUV440P
@ AV_PIX_FMT_YUV440P
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
Definition: pixfmt.h:99
add_block
static void add_block(uint16_t *dst, int linesize, const int16_t block[64])
Definition: vf_spp.c:224
AVDictionary
Definition: dict.c:30
FFMAX
#define FFMAX(a, b)
Definition: macros.h:47
SPPContext::qscale_type
int qscale_type
Definition: vf_spp.h:36
AVFilter::name
const char * name
Filter name.
Definition: avfilter.h:149
store_slice16_c
static void store_slice16_c(uint16_t *dst, const int16_t *src, int dst_linesize, int src_linesize, int width, int height, int log2_scale, const uint8_t dither[8][8], int depth)
Definition: vf_spp.c:193
AVDCT::fdct
void(* fdct)(int16_t *block)
Definition: avdct.h:50
AVFrame::data
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:317
process_command
static int process_command(AVFilterContext *ctx, const char *cmd, const char *args, char *res, int res_len, int flags)
Definition: vf_spp.c:442
av_image_copy_plane
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:374
AVFilterFormats
A list of supported formats for one end of a filter link.
Definition: formats.h:64
query_formats
static int query_formats(AVFilterContext *ctx)
Definition: vf_spp.c:312
SPPContext::requantize
void(* requantize)(int16_t dst[64], const int16_t src[64], int qp, const uint8_t *permutation)
Definition: vf_spp.h:51
finish
static void finish(void)
Definition: movenc.c:342
AV_PIX_FMT_GBRP10
#define AV_PIX_FMT_GBRP10
Definition: pixfmt.h:405
SPPContext::dct
AVDCT * dct
Definition: vf_spp.h:40
AV_PIX_FMT_YUV422P9
#define AV_PIX_FMT_YUV422P9
Definition: pixfmt.h:387
child_class_iterate
static const AVClass * child_class_iterate(void **iter)
Definition: vf_spp.c:48
av_opt_set
int av_opt_set(void *obj, const char *name, const char *val, int search_flags)
Definition: opt.c:465
AVDCT::idct_permutation
uint8_t idct_permutation[64]
IDCT input permutation.
Definition: avdct.h:48
AVFilterPad
A filter pad used for either input or output.
Definition: internal.h:54
SPPContext::qp
int qp
Definition: vf_spp.h:34
SPPContext::temp_linesize
int temp_linesize
Definition: vf_spp.h:37
AV_PIX_FMT_YUV444P10
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:392
spp_class
static const AVClass spp_class
Definition: vf_spp.c:74
av_cold
#define av_cold
Definition: attributes.h:90
inputs
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
Definition: filter_design.txt:243
ff_set_common_formats
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:580
OFFSET
#define OFFSET(x)
Definition: vf_spp.c:61
NB_MODES
@ NB_MODES
Definition: vf_spp.c:45
mask
static const uint16_t mask[17]
Definition: lzw.c:38
av_dict_get
AVDictionaryEntry * av_dict_get(const AVDictionary *m, const char *key, const AVDictionaryEntry *prev, int flags)
Get a dictionary entry with matching key.
Definition: dict.c:40
AV_PIX_FMT_YUVJ422P
@ AV_PIX_FMT_YUVJ422P
planar YUV 4:2:2, 16bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV422P and setting col...
Definition: pixfmt.h:79
width
#define width
s
#define s(width, name)
Definition: cbs_vp9.c:257
uninit
static av_cold void uninit(AVFilterContext *ctx)
Definition: vf_spp.c:484
AV_CEIL_RSHIFT
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:51
AVDictionaryEntry::key
char * key
Definition: dict.h:80
outputs
static const AVFilterPad outputs[]
Definition: af_acontrast.c:203
pix_fmts
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:290
AV_PIX_FMT_YUV420P9
#define AV_PIX_FMT_YUV420P9
Definition: pixfmt.h:386
offset
static const uint8_t offset[127][2]
Definition: vf_spp.c:96
ctx
AVFormatContext * ctx
Definition: movenc.c:48
AV_PIX_FMT_YUV420P
@ AV_PIX_FMT_YUV420P
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:66
AV_PIX_FMT_YUVJ444P
@ AV_PIX_FMT_YUVJ444P
planar YUV 4:4:4, 24bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV444P and setting col...
Definition: pixfmt.h:80
vf_spp.h
opts
AVDictionary * opts
Definition: movenc.c:50
LIBAVUTIL_VERSION_INT
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:66
NULL
#define NULL
Definition: coverity.c:32
av_frame_copy_props
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
Definition: frame.c:537
AV_PIX_FMT_YUVJ420P
@ AV_PIX_FMT_YUVJ420P
planar YUV 4:2:0, 12bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV420P and setting col...
Definition: pixfmt.h:78
av_default_item_name
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:235
src
#define src
Definition: vp8dsp.c:255
hardthresh_c
static void hardthresh_c(int16_t dst[64], const int16_t src[64], int qp, const uint8_t *permutation)
Definition: vf_spp.c:120
avcodec_dct_init
int avcodec_dct_init(AVDCT *dsp)
Definition: avdct.c:88
AV_PIX_FMT_YUV422P10
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:390
AV_PIX_FMT_GRAY8
@ AV_PIX_FMT_GRAY8
Y , 8bpp.
Definition: pixfmt.h:74
AVDCT::idct
void(* idct)(int16_t *block)
Definition: avdct.h:32
AV_PIX_FMT_GBRP9
#define AV_PIX_FMT_GBRP9
Definition: pixfmt.h:404
SPPContext::store_slice
void(* store_slice)(uint8_t *dst, const int16_t *src, int dst_stride, int src_stride, int width, int height, int log2_scale, const uint8_t dither[8][8])
Definition: vf_spp.h:46
c
Undefined Behavior In the C some operations are like signed integer dereferencing freed accessing outside allocated Undefined Behavior must not occur in a C it is not safe even if the output of undefined operations is unused The unsafety may seem nit picking but Optimizing compilers have in fact optimized code on the assumption that no undefined Behavior occurs Optimizing code based on wrong assumptions can and has in some cases lead to effects beyond the output of computations The signed integer overflow problem in speed critical code Code which is highly optimized and works with signed integers sometimes has the problem that often the output of the computation does not c
Definition: undefined.txt:32
av_opt_set_int
int av_opt_set_int(void *obj, const char *name, int64_t val, int search_flags)
Definition: opt.c:586
AV_CLASS_CATEGORY_FILTER
@ AV_CLASS_CATEGORY_FILTER
Definition: log.h:36
SPPContext
Definition: vf_spp.h:30
MAX_LEVEL
#define MAX_LEVEL
Definition: rl.h:36
avcodec_dct_alloc
AVDCT * avcodec_dct_alloc(void)
Allocates a AVDCT context.
Definition: avdct.c:75
AVFrame::pict_type
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:386
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition: internal.h:116
AVClass::child_next
void *(* child_next)(void *obj, void *prev)
Return next AVOptions-enabled child or NULL.
Definition: log.h:112
bps
unsigned bps
Definition: movenc.c:1595
TFLAGS
#define TFLAGS
Definition: vf_spp.c:63
av_frame_is_writable
int av_frame_is_writable(AVFrame *frame)
Check if the frame data is writable.
Definition: frame.c:473
ff_norm_qscale
static int ff_norm_qscale(int qscale, int type)
Normalize the qscale factor FIXME the H264 qscale is a log based scale, mpeg1/2 is not,...
Definition: internal.h:351
height
#define height
av_dict_free
void av_dict_free(AVDictionary **pm)
Free all the memory allocated for an AVDictionary struct and all keys and values.
Definition: dict.c:203
AVDCT::get_pixels_unaligned
void(* get_pixels_unaligned)(int16_t *block, const uint8_t *pixels, ptrdiff_t line_size)
Definition: avdct.h:71
internal.h
ff_vf_spp
const AVFilter ff_vf_spp
Definition: vf_spp.c:512
DECLARE_ALIGNED
#define DECLARE_ALIGNED(n, t, v)
Definition: mem.h:116
i
int i
Definition: input.c:406
config_input
static int config_input(AVFilterLink *inlink)
Definition: vf_spp.c:337
av_malloc_array
#define av_malloc_array(a, b)
Definition: tableprint_vlc.h:32
avcodec_dct_get_class
const AVClass * avcodec_dct_get_class(void)
Definition: avdct.c:70
FFMIN
#define FFMIN(a, b)
Definition: macros.h:49
AV_PIX_FMT_YUVJ440P
@ AV_PIX_FMT_YUVJ440P
planar YUV 4:4:0 full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV440P and setting color_range
Definition: pixfmt.h:100
AVFilterPad::name
const char * name
Pad name.
Definition: internal.h:60
SPPContext::temp
uint16_t * temp
Definition: vf_spp.h:39
AV_PIX_FMT_YUV444P9
#define AV_PIX_FMT_YUV444P9
Definition: pixfmt.h:388
init_dict
static av_cold int init_dict(AVFilterContext *ctx, AVDictionary **opts)
Definition: vf_spp.c:457
AVFilter
Filter definition.
Definition: avfilter.h:145
FLAGS
#define FLAGS
Definition: vf_spp.c:62
ret
ret
Definition: filter_design.txt:187
SPPContext::src
uint8_t * src
Definition: vf_spp.h:38
AVClass::class_name
const char * class_name
The name of the class; usually it is the same name as the context structure type to which the AVClass...
Definition: log.h:71
spp_inputs
static const AVFilterPad spp_inputs[]
Definition: vf_spp.c:494
store_slice_c
static void store_slice_c(uint8_t *dst, const int16_t *src, int dst_linesize, int src_linesize, int width, int height, int log2_scale, const uint8_t dither[8][8])
Definition: vf_spp.c:163
AVFrame::height
int height
Definition: frame.h:361
filter
static void filter(SPPContext *p, uint8_t *dst, uint8_t *src, int dst_linesize, int src_linesize, int width, int height, const uint8_t *qp_table, int qp_stride, int is_luma, int depth)
Definition: vf_spp.c:240
spp_outputs
static const AVFilterPad spp_outputs[]
Definition: vf_spp.c:504
AV_PICTURE_TYPE_B
@ AV_PICTURE_TYPE_B
Bi-dir predicted.
Definition: avutil.h:276
mode
mode
Definition: ebur128.h:83
AV_PIX_FMT_NONE
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:65
AV_OPT_TYPE_INT
@ AV_OPT_TYPE_INT
Definition: opt.h:224
temp
else temp
Definition: vf_mcdeint.c:259
STORE
#define STORE(pos)
AV_PIX_FMT_YUV444P
@ AV_PIX_FMT_YUV444P
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:71
AVFilterContext
An instance of a filter.
Definition: avfilter.h:333
AV_PIX_FMT_GBRP
@ AV_PIX_FMT_GBRP
planar GBR 4:4:4 24bpp
Definition: pixfmt.h:158
desc
const char * desc
Definition: libsvtav1.c:79
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
AV_PIX_FMT_YUV422P
@ AV_PIX_FMT_YUV422P
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:70
ff_qp_table_extract
int ff_qp_table_extract(AVFrame *frame, int8_t **table, int *table_w, int *table_h, int *qscale_type)
Extract a libpostproc-compatible QP table - an 8-bit QP value per 16x16 macroblock,...
Definition: qp_table.c:30
AVPixFmtDescriptor
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:69
AVDictionaryEntry
Definition: dict.h:79
FFALIGN
#define FFALIGN(x, a)
Definition: macros.h:78
AV_OPT_TYPE_BOOL
@ AV_OPT_TYPE_BOOL
Definition: opt.h:241
av_freep
#define av_freep(p)
Definition: tableprint_vlc.h:35
AV_PIX_FMT_YUV411P
@ AV_PIX_FMT_YUV411P
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
Definition: pixfmt.h:73
d
d
Definition: ffmpeg_filter.c:156
AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL
#define AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL
Same as AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC, except that the filter will have its filter_frame() c...
Definition: avfilter.h:134
imgutils.h
flags
#define flags(name, subs,...)
Definition: cbs_av1.c:561
AVFrame::linesize
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:334
AV_PIX_FMT_YUV410P
@ AV_PIX_FMT_YUV410P
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: pixfmt.h:72
block
The exact code depends on how similar the blocks are and how related they are to the block
Definition: filter_design.txt:207
h
h
Definition: vp9dsp_template.c:2038
AVDictionaryEntry::value
char * value
Definition: dict.h:81
STORE16
#define STORE16(pos)
child_next
static void * child_next(void *obj, void *prev)
Definition: vf_spp.c:55
SPPContext::log2_count
int log2_count
Definition: vf_spp.h:33
MODE_HARD
@ MODE_HARD
Definition: vf_spp.c:43
AV_OPT_TYPE_CONST
@ AV_OPT_TYPE_CONST
Definition: opt.h:233
ff_spp_init_x86
av_cold void ff_spp_init_x86(SPPContext *s)
Definition: vf_spp.c:220
softthresh_c
static void softthresh_c(int16_t dst[64], const int16_t src[64], int qp, const uint8_t *permutation)
Definition: vf_spp.c:141
dither
static const uint8_t dither[8][8]
Definition: vf_fspp.c:58