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/emms.h"
35 #include "libavutil/imgutils.h"
36 #include "libavutil/mem.h"
37 #include "libavutil/mem_internal.h"
38 #include "libavutil/opt.h"
39 #include "libavutil/pixdesc.h"
40 
41 #include "filters.h"
42 #include "qp_table.h"
43 #include "vf_spp.h"
44 #include "video.h"
45 
46 enum mode {
50 };
51 
52 static const AVClass *child_class_iterate(void **iter)
53 {
54  const AVClass *c = *iter ? NULL : avcodec_dct_get_class();
55  *iter = (void*)(uintptr_t)c;
56  return c;
57 }
58 
59 static void *child_next(void *obj, void *prev)
60 {
61  SPPContext *s = obj;
62  return prev ? NULL : s->dct;
63 }
64 
65 #define OFFSET(x) offsetof(SPPContext, x)
66 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
67 #define TFLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
68 static const AVOption spp_options[] = {
69  { "quality", "set quality", OFFSET(log2_count), AV_OPT_TYPE_INT, {.i64 = 3}, 0, MAX_LEVEL, TFLAGS },
70  { "qp", "force a constant quantizer parameter", OFFSET(qp), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 63, FLAGS },
71  { "mode", "set thresholding mode", OFFSET(mode), AV_OPT_TYPE_INT, {.i64 = MODE_HARD}, 0, NB_MODES - 1, FLAGS, .unit = "mode" },
72  { "hard", "hard thresholding", 0, AV_OPT_TYPE_CONST, {.i64 = MODE_HARD}, INT_MIN, INT_MAX, FLAGS, .unit = "mode" },
73  { "soft", "soft thresholding", 0, AV_OPT_TYPE_CONST, {.i64 = MODE_SOFT}, INT_MIN, INT_MAX, FLAGS, .unit = "mode" },
74  { "use_bframe_qp", "use B-frames' QP", OFFSET(use_bframe_qp), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, FLAGS },
75  { NULL }
76 };
77 
78 static const AVClass spp_class = {
79  .class_name = "spp",
80  .item_name = av_default_item_name,
81  .option = spp_options,
82  .version = LIBAVUTIL_VERSION_INT,
83  .category = AV_CLASS_CATEGORY_FILTER,
84  .child_class_iterate = child_class_iterate,
86 };
87 
88 // XXX: share between filters?
89 DECLARE_ALIGNED(8, static const uint8_t, ldither)[8][8] = {
90  { 0, 48, 12, 60, 3, 51, 15, 63 },
91  { 32, 16, 44, 28, 35, 19, 47, 31 },
92  { 8, 56, 4, 52, 11, 59, 7, 55 },
93  { 40, 24, 36, 20, 43, 27, 39, 23 },
94  { 2, 50, 14, 62, 1, 49, 13, 61 },
95  { 34, 18, 46, 30, 33, 17, 45, 29 },
96  { 10, 58, 6, 54, 9, 57, 5, 53 },
97  { 42, 26, 38, 22, 41, 25, 37, 21 },
98 };
99 
100 static const uint8_t offset[128][2] = {
101  {0,0}, // unused
102  {0,0},
103  {0,0}, {4,4}, // quality = 1
104  {0,0}, {2,2}, {6,4}, {4,6}, // quality = 2
105  {0,0}, {5,1}, {2,2}, {7,3}, {4,4}, {1,5}, {6,6}, {3,7}, // quality = 3
106 
107  {0,0}, {4,0}, {1,1}, {5,1}, {3,2}, {7,2}, {2,3}, {6,3}, // quality = 4
108  {0,4}, {4,4}, {1,5}, {5,5}, {3,6}, {7,6}, {2,7}, {6,7},
109 
110  {0,0}, {0,2}, {0,4}, {0,6}, {1,1}, {1,3}, {1,5}, {1,7}, // quality = 5
111  {2,0}, {2,2}, {2,4}, {2,6}, {3,1}, {3,3}, {3,5}, {3,7},
112  {4,0}, {4,2}, {4,4}, {4,6}, {5,1}, {5,3}, {5,5}, {5,7},
113  {6,0}, {6,2}, {6,4}, {6,6}, {7,1}, {7,3}, {7,5}, {7,7},
114 
115  {0,0}, {4,4}, {0,4}, {4,0}, {2,2}, {6,6}, {2,6}, {6,2}, // quality = 6
116  {0,2}, {4,6}, {0,6}, {4,2}, {2,0}, {6,4}, {2,4}, {6,0},
117  {1,1}, {5,5}, {1,5}, {5,1}, {3,3}, {7,7}, {3,7}, {7,3},
118  {1,3}, {5,7}, {1,7}, {5,3}, {3,1}, {7,5}, {3,5}, {7,1},
119  {0,1}, {4,5}, {0,5}, {4,1}, {2,3}, {6,7}, {2,7}, {6,3},
120  {0,3}, {4,7}, {0,7}, {4,3}, {2,1}, {6,5}, {2,5}, {6,1},
121  {1,0}, {5,4}, {1,4}, {5,0}, {3,2}, {7,6}, {3,6}, {7,2},
122  {1,2}, {5,6}, {1,6}, {5,2}, {3,0}, {7,4}, {3,4}, {7,0},
123 };
124 
125 static void hardthresh_c(int16_t dst[64], const int16_t src[64],
126  int qp, const uint8_t *permutation)
127 {
128  int i;
129  int bias = 0; // FIXME
130 
131  unsigned threshold1 = qp * ((1<<4) - bias) - 1;
132  unsigned threshold2 = threshold1 << 1;
133 
134  memset(dst, 0, 64 * sizeof(dst[0]));
135  dst[0] = (src[0] + 4) >> 3;
136 
137  for (i = 1; i < 64; i++) {
138  int level = src[i];
139  if (((unsigned)(level + threshold1)) > threshold2) {
140  const int j = permutation[i];
141  dst[j] = (level + 4) >> 3;
142  }
143  }
144 }
145 
146 static void softthresh_c(int16_t dst[64], const int16_t src[64],
147  int qp, const uint8_t *permutation)
148 {
149  int i;
150  int bias = 0; //FIXME
151 
152  unsigned threshold1 = qp * ((1<<4) - bias) - 1;
153  unsigned threshold2 = threshold1 << 1;
154 
155  memset(dst, 0, 64 * sizeof(dst[0]));
156  dst[0] = (src[0] + 4) >> 3;
157 
158  for (i = 1; i < 64; i++) {
159  int level = src[i];
160  if (((unsigned)(level + threshold1)) > threshold2) {
161  const int j = permutation[i];
162  if (level > 0) dst[j] = (level - threshold1 + 4) >> 3;
163  else dst[j] = (level + threshold1 + 4) >> 3;
164  }
165  }
166 }
167 
168 static void store_slice_c(uint8_t *dst, const int16_t *src,
169  int dst_linesize, int src_linesize,
170  int width, int height, int log2_scale,
171  const uint8_t dither[8][8])
172 {
173  int y, x;
174 
175 #define STORE(pos) do { \
176  temp = (src[x + y*src_linesize + pos] * (1 << log2_scale) + d[pos]) >> 6;\
177  if (temp & 0x100) \
178  temp = ~(temp >> 31); \
179  dst[x + y*dst_linesize + pos] = temp; \
180 } while (0)
181 
182  for (y = 0; y < height; y++) {
183  const uint8_t *d = dither[y];
184  for (x = 0; x < width; x += 8) {
185  int temp;
186  STORE(0);
187  STORE(1);
188  STORE(2);
189  STORE(3);
190  STORE(4);
191  STORE(5);
192  STORE(6);
193  STORE(7);
194  }
195  }
196 }
197 
198 static void store_slice16_c(uint16_t *dst, const int16_t *src,
199  int dst_linesize, int src_linesize,
200  int width, int height, int log2_scale,
201  const uint8_t dither[8][8], int depth)
202 {
203  int y, x;
204  unsigned int mask = -1<<depth;
205 
206 #define STORE16(pos) do { \
207  temp = (src[x + y*src_linesize + pos] * (1 << log2_scale) + (d[pos]>>1)) >> 5; \
208  if (temp & mask ) \
209  temp = ~(temp >> 31); \
210  dst[x + y*dst_linesize + pos] = temp; \
211 } while (0)
212 
213  for (y = 0; y < height; y++) {
214  const uint8_t *d = dither[y];
215  for (x = 0; x < width; x += 8) {
216  int temp;
217  STORE16(0);
218  STORE16(1);
219  STORE16(2);
220  STORE16(3);
221  STORE16(4);
222  STORE16(5);
223  STORE16(6);
224  STORE16(7);
225  }
226  }
227 }
228 
229 static inline void add_block(uint16_t *dst, int linesize, const int16_t block[64])
230 {
231  int y;
232 
233  for (y = 0; y < 8; y++) {
234  dst[0 + y*linesize] += block[0 + y*8];
235  dst[1 + y*linesize] += block[1 + y*8];
236  dst[2 + y*linesize] += block[2 + y*8];
237  dst[3 + y*linesize] += block[3 + y*8];
238  dst[4 + y*linesize] += block[4 + y*8];
239  dst[5 + y*linesize] += block[5 + y*8];
240  dst[6 + y*linesize] += block[6 + y*8];
241  dst[7 + y*linesize] += block[7 + y*8];
242  }
243 }
244 
245 static void filter(SPPContext *p, uint8_t *dst, uint8_t *src,
246  int dst_linesize, int src_linesize, int width, int height,
247  const uint8_t *qp_table, int qp_stride, int is_luma, int depth)
248 {
249  int x, y, i;
250  const int count = 1 << p->log2_count;
251  const int linesize = is_luma ? p->temp_linesize : FFALIGN(width+16, 16);
252  DECLARE_ALIGNED(16, uint64_t, block_align)[32];
253  int16_t *block = (int16_t *)block_align;
254  int16_t *block2 = (int16_t *)(block_align + 16);
255  uint16_t *psrc16 = (uint16_t*)p->src;
256  const int sample_bytes = (depth+7) / 8;
257 
258  for (y = 0; y < height; y++) {
259  int index = 8 + 8*linesize + y*linesize;
260  memcpy(p->src + index*sample_bytes, src + y*src_linesize, width*sample_bytes);
261  if (sample_bytes == 1) {
262  for (x = 0; x < 8; x++) {
263  p->src[index - x - 1] = p->src[index + x ];
264  p->src[index + width + x ] = p->src[index + width - x - 1];
265  }
266  } else {
267  for (x = 0; x < 8; x++) {
268  psrc16[index - x - 1] = psrc16[index + x ];
269  psrc16[index + width + x ] = psrc16[index + width - x - 1];
270  }
271  }
272  }
273  for (y = 0; y < 8; y++) {
274  memcpy(p->src + ( 7-y)*linesize * sample_bytes, p->src + ( y+8)*linesize * sample_bytes, linesize * sample_bytes);
275  memcpy(p->src + (height+8+y)*linesize * sample_bytes, p->src + (height-y+7)*linesize * sample_bytes, linesize * sample_bytes);
276  }
277 
278  for (y = 0; y < height + 8; y += 8) {
279  memset(p->temp + (8 + y) * linesize, 0, 8 * linesize * sizeof(*p->temp));
280  for (x = 0; x < width + 8; x += 8) {
281  int qp;
282 
283  if (p->qp) {
284  qp = p->qp;
285  } else{
286  const int qps = 3 + is_luma;
287  qp = qp_table[(FFMIN(x, width - 1) >> qps) + (FFMIN(y, height - 1) >> qps) * qp_stride];
288  qp = FFMAX(1, ff_norm_qscale(qp, p->qscale_type));
289  }
290  for (i = 0; i < count; i++) {
291  const int x1 = x + offset[i + count][0];
292  const int y1 = y + offset[i + count][1];
293  const int index = x1 + y1*linesize;
294  p->dct->get_pixels_unaligned(block, p->src + sample_bytes*index, sample_bytes*linesize);
295  p->dct->fdct(block);
296  p->requantize(block2, block, qp, p->dct->idct_permutation);
297  p->dct->idct(block2);
298  add_block(p->temp + index, linesize, block2);
299  }
300  }
301  if (y) {
302  if (sample_bytes == 1) {
303  p->store_slice(dst + (y - 8) * dst_linesize, p->temp + 8 + y*linesize,
304  dst_linesize, linesize, width,
305  FFMIN(8, height + 8 - y), MAX_LEVEL - p->log2_count,
306  ldither);
307  } else {
308  store_slice16_c((uint16_t*)(dst + (y - 8) * dst_linesize), p->temp + 8 + y*linesize,
309  dst_linesize/2, linesize, width,
310  FFMIN(8, height + 8 - y), MAX_LEVEL - p->log2_count,
311  ldither, depth);
312  }
313  }
314  }
315 }
316 
317 static const enum AVPixelFormat pix_fmts[] = {
332 };
333 
335 {
336  SPPContext *s = inlink->dst->priv;
337  const int h = FFALIGN(inlink->h + 16, 16);
339  const int bps = desc->comp[0].depth;
340 
341  s->store_slice = store_slice_c;
342  switch (s->mode) {
343  case MODE_HARD: s->requantize = hardthresh_c; break;
344  case MODE_SOFT: s->requantize = softthresh_c; break;
345  }
346 
347  av_opt_set_int(s->dct, "bits_per_sample", bps, 0);
348  avcodec_dct_init(s->dct);
349 
350 #if ARCH_X86
352 #endif
353 
354  s->hsub = desc->log2_chroma_w;
355  s->vsub = desc->log2_chroma_h;
356  s->temp_linesize = FFALIGN(inlink->w + 16, 16);
357  s->temp = av_malloc_array(s->temp_linesize, h * sizeof(*s->temp));
358  s->src = av_malloc_array(s->temp_linesize, h * sizeof(*s->src) * 2);
359 
360  if (!s->temp || !s->src)
361  return AVERROR(ENOMEM);
362  return 0;
363 }
364 
366 {
367  AVFilterContext *ctx = inlink->dst;
368  SPPContext *s = ctx->priv;
369  AVFilterLink *outlink = ctx->outputs[0];
370  AVFrame *out = in;
371  int qp_stride = 0;
372  int8_t *qp_table = NULL;
374  const int depth = desc->comp[0].depth;
375  int ret = 0;
376 
377  /* if we are not in a constant user quantizer mode and we don't want to use
378  * the quantizers from the B-frames (B-frames often have a higher QP), we
379  * need to save the qp table from the last non B-frame; this is what the
380  * following code block does */
381  if (!s->qp && (s->use_bframe_qp || in->pict_type != AV_PICTURE_TYPE_B)) {
382  ret = ff_qp_table_extract(in, &qp_table, &qp_stride, NULL, &s->qscale_type);
383  if (ret < 0) {
384  av_frame_free(&in);
385  return ret;
386  }
387 
388  if (!s->use_bframe_qp && in->pict_type != AV_PICTURE_TYPE_B) {
389  av_freep(&s->non_b_qp_table);
390  s->non_b_qp_table = qp_table;
391  s->non_b_qp_stride = qp_stride;
392  }
393  }
394 
395  if (s->log2_count && !ctx->is_disabled) {
396  if (!s->use_bframe_qp && s->non_b_qp_table) {
397  qp_table = s->non_b_qp_table;
398  qp_stride = s->non_b_qp_stride;
399  }
400 
401  if (qp_table || s->qp) {
402  const int cw = AV_CEIL_RSHIFT(inlink->w, s->hsub);
403  const int ch = AV_CEIL_RSHIFT(inlink->h, s->vsub);
404 
405  /* get a new frame if in-place is not possible or if the dimensions
406  * are not multiple of 8 */
407  if (!av_frame_is_writable(in) || (inlink->w & 7) || (inlink->h & 7)) {
408  const int aligned_w = FFALIGN(inlink->w, 8);
409  const int aligned_h = FFALIGN(inlink->h, 8);
410 
411  out = ff_get_video_buffer(outlink, aligned_w, aligned_h);
412  if (!out) {
413  av_frame_free(&in);
414  ret = AVERROR(ENOMEM);
415  goto finish;
416  }
418  out->width = in->width;
419  out->height = in->height;
420  }
421 
422  filter(s, out->data[0], in->data[0], out->linesize[0], in->linesize[0], inlink->w, inlink->h, qp_table, qp_stride, 1, depth);
423 
424  if (out->data[2]) {
425  filter(s, out->data[1], in->data[1], out->linesize[1], in->linesize[1], cw, ch, qp_table, qp_stride, 0, depth);
426  filter(s, out->data[2], in->data[2], out->linesize[2], in->linesize[2], cw, ch, qp_table, qp_stride, 0, depth);
427  }
428  emms_c();
429  }
430  }
431 
432  if (in != out) {
433  if (in->data[3])
434  av_image_copy_plane(out->data[3], out->linesize[3],
435  in ->data[3], in ->linesize[3],
436  inlink->w, inlink->h);
437  av_frame_free(&in);
438  }
439  ret = ff_filter_frame(outlink, out);
440 finish:
441  if (qp_table != s->non_b_qp_table)
442  av_freep(&qp_table);
443  return ret;
444 }
445 
446 static int process_command(AVFilterContext *ctx, const char *cmd, const char *args,
447  char *res, int res_len, int flags)
448 {
449  SPPContext *s = ctx->priv;
450 
451  if (!strcmp(cmd, "level") || !strcmp(cmd, "quality")) {
452  if (!strcmp(args, "max"))
453  s->log2_count = MAX_LEVEL;
454  else
455  s->log2_count = av_clip(strtol(args, NULL, 10), 0, MAX_LEVEL);
456  return 0;
457  }
458  return AVERROR(ENOSYS);
459 }
460 
462 {
463  SPPContext *s = ctx->priv;
464 
465  s->dct = avcodec_dct_alloc();
466  if (!s->dct)
467  return AVERROR(ENOMEM);
468 
469  return 0;
470 }
471 
473 {
474  SPPContext *s = ctx->priv;
475 
476  av_freep(&s->temp);
477  av_freep(&s->src);
478  av_freep(&s->dct);
479  av_freep(&s->non_b_qp_table);
480 }
481 
482 static const AVFilterPad spp_inputs[] = {
483  {
484  .name = "default",
485  .type = AVMEDIA_TYPE_VIDEO,
486  .config_props = config_input,
487  .filter_frame = filter_frame,
488  },
489 };
490 
492  .name = "spp",
493  .description = NULL_IF_CONFIG_SMALL("Apply a simple post processing filter."),
494  .priv_size = sizeof(SPPContext),
495  .preinit = preinit,
496  .uninit = uninit,
500  .process_command = process_command,
501  .priv_class = &spp_class,
503 };
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:116
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:71
level
uint8_t level
Definition: svq3.c:205
av_clip
#define av_clip
Definition: common.h:100
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
mem_internal.h
FILTER_PIXFMTS_ARRAY
#define FILTER_PIXFMTS_ARRAY(array)
Definition: filters.h:242
out
FILE * out
Definition: movenc.c:55
filter_frame
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
Definition: vf_spp.c:365
SPPContext::qscale_type
enum AVVideoEncParamsType qscale_type
Definition: vf_spp.h:37
ff_filter_frame
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1061
av_pix_fmt_desc_get
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:3170
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:68
mask
int mask
Definition: mediacodecdec_common.c:154
av_frame_free
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:162
MODE_SOFT
@ MODE_SOFT
Definition: vf_spp.c:48
FILTER_INPUTS
#define FILTER_INPUTS(array)
Definition: filters.h:262
mode
Definition: swscale.c:52
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:389
pixdesc.h
ldither
static const uint8_t ldither[8][8]
Definition: vf_spp.c:89
AVFrame::width
int width
Definition: frame.h:461
AVOption
AVOption.
Definition: opt.h:429
AV_PIX_FMT_YUV420P10
#define AV_PIX_FMT_YUV420P10
Definition: pixfmt.h:502
AV_PIX_FMT_YUV440P
@ AV_PIX_FMT_YUV440P
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
Definition: pixfmt.h:106
add_block
static void add_block(uint16_t *dst, int linesize, const int16_t block[64])
Definition: vf_spp.c:229
FFMAX
#define FFMAX(a, b)
Definition: macros.h:47
AVFilter::name
const char * name
Filter name.
Definition: avfilter.h:205
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:198
ff_norm_qscale
static int ff_norm_qscale(int qscale, enum AVVideoEncParamsType type)
Normalize the qscale factor FIXME Add support for other values of enum AVVideoEncParamsType besides A...
Definition: qp_table.h:39
preinit
static av_cold int preinit(AVFilterContext *ctx)
Definition: vf_spp.c:461
video.h
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:410
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:446
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
SPPContext::requantize
void(* requantize)(int16_t dst[64], const int16_t src[64], int qp, const uint8_t *permutation)
Definition: vf_spp.h:52
finish
static void finish(void)
Definition: movenc.c:374
AV_PIX_FMT_GBRP10
#define AV_PIX_FMT_GBRP10
Definition: pixfmt.h:518
SPPContext::dct
AVDCT * dct
Definition: vf_spp.h:41
AV_PIX_FMT_YUV422P9
#define AV_PIX_FMT_YUV422P9
Definition: pixfmt.h:500
child_class_iterate
static const AVClass * child_class_iterate(void **iter)
Definition: vf_spp.c:52
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: filters.h:38
SPPContext::qp
int qp
Definition: vf_spp.h:35
SPPContext::temp_linesize
int temp_linesize
Definition: vf_spp.h:38
AV_PIX_FMT_YUV444P10
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:505
pix_fmts
static enum AVPixelFormat pix_fmts[]
Definition: vf_spp.c:317
spp_class
static const AVClass spp_class
Definition: vf_spp.c:78
av_cold
#define av_cold
Definition: attributes.h:90
OFFSET
#define OFFSET(x)
Definition: vf_spp.c:65
ff_video_default_filterpad
const AVFilterPad ff_video_default_filterpad[1]
An AVFilterPad array whose only entry has name "default" and is of type AVMEDIA_TYPE_VIDEO.
Definition: video.c:37
NB_MODES
@ NB_MODES
Definition: vf_spp.c:49
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:86
emms_c
#define emms_c()
Definition: emms.h:63
s
#define s(width, name)
Definition: cbs_vp9.c:198
uninit
static av_cold void uninit(AVFilterContext *ctx)
Definition: vf_spp.c:472
AV_CEIL_RSHIFT
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:60
filters.h
AV_PIX_FMT_YUV420P9
#define AV_PIX_FMT_YUV420P9
Definition: pixfmt.h:499
ctx
AVFormatContext * ctx
Definition: movenc.c:49
offset
static const uint8_t offset[128][2]
Definition: vf_spp.c:100
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:73
FILTER_OUTPUTS
#define FILTER_OUTPUTS(array)
Definition: filters.h:263
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:87
vf_spp.h
LIBAVUTIL_VERSION_INT
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:75
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:725
bias
static int bias(int x, int c)
Definition: vqcdec.c:115
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:85
av_default_item_name
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:237
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:125
avcodec_dct_init
int avcodec_dct_init(AVDCT *dsp)
Definition: avdct.c:89
AV_PIX_FMT_YUV422P10
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:503
AV_PIX_FMT_GRAY8
@ AV_PIX_FMT_GRAY8
Y , 8bpp.
Definition: pixfmt.h:81
AVDCT::idct
void(* idct)(int16_t *block)
Definition: avdct.h:32
AV_PIX_FMT_GBRP9
#define AV_PIX_FMT_GBRP9
Definition: pixfmt.h:517
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:47
index
int index
Definition: gxfenc.c:90
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:880
AV_CLASS_CATEGORY_FILTER
@ AV_CLASS_CATEGORY_FILTER
Definition: log.h:36
SPPContext
Definition: vf_spp.h:31
MAX_LEVEL
#define MAX_LEVEL
Definition: rl.h:36
avcodec_dct_alloc
AVDCT * avcodec_dct_alloc(void)
Allocates a AVDCT context.
Definition: avdct.c:76
AVFrame::pict_type
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:491
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:94
height
#define height
Definition: dsp.h:85
DECLARE_ALIGNED
#define DECLARE_ALIGNED(n, t, v)
Definition: mem_internal.h:102
dst
uint8_t ptrdiff_t const uint8_t ptrdiff_t int intptr_t intptr_t int int16_t * dst
Definition: dsp.h:83
AVClass::child_next
void *(* child_next)(void *obj, void *prev)
Return next AVOptions-enabled child or NULL.
Definition: log.h:149
bps
unsigned bps
Definition: movenc.c:1880
TFLAGS
#define TFLAGS
Definition: vf_spp.c:67
av_frame_is_writable
int av_frame_is_writable(AVFrame *frame)
Check if the frame data is writable.
Definition: frame.c:661
AVDCT::get_pixels_unaligned
void(* get_pixels_unaligned)(int16_t *block, const uint8_t *pixels, ptrdiff_t line_size)
Definition: avdct.h:71
ff_vf_spp
const AVFilter ff_vf_spp
Definition: vf_spp.c:491
emms.h
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:256
config_input
static int config_input(AVFilterLink *inlink)
Definition: vf_spp.c:334
av_malloc_array
#define av_malloc_array(a, b)
Definition: tableprint_vlc.h:31
avcodec_dct_get_class
const AVClass * avcodec_dct_get_class(void)
Definition: avdct.c:71
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:107
AVFilterPad::name
const char * name
Pad name.
Definition: filters.h:44
SPPContext::temp
uint16_t * temp
Definition: vf_spp.h:40
AV_PIX_FMT_YUV444P9
#define AV_PIX_FMT_YUV444P9
Definition: pixfmt.h:501
AVFilter
Filter definition.
Definition: avfilter.h:201
FLAGS
#define FLAGS
Definition: vf_spp.c:66
ret
ret
Definition: filter_design.txt:187
SPPContext::src
uint8_t * src
Definition: vf_spp.h:39
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:80
ff_qp_table_extract
int ff_qp_table_extract(AVFrame *frame, int8_t **table, int *table_w, int *table_h, enum AVVideoEncParamsType *qscale_type)
Extract a libpostproc-compatible QP table - an 8-bit QP value per 16x16 macroblock,...
Definition: qp_table.c:27
spp_inputs
static const AVFilterPad spp_inputs[]
Definition: vf_spp.c:482
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:168
AVFrame::height
int height
Definition: frame.h:461
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:245
AV_PICTURE_TYPE_B
@ AV_PICTURE_TYPE_B
Bi-dir predicted.
Definition: avutil.h:281
AV_PIX_FMT_NONE
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:72
AV_OPT_TYPE_INT
@ AV_OPT_TYPE_INT
Underlying C type is int.
Definition: opt.h:259
temp
else temp
Definition: vf_mcdeint.c:263
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:78
AVFilterContext
An instance of a filter.
Definition: avfilter.h:457
AV_PIX_FMT_GBRP
@ AV_PIX_FMT_GBRP
planar GBR 4:4:4 24bpp
Definition: pixfmt.h:165
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:77
mem.h
AVPixFmtDescriptor
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:69
FFALIGN
#define FFALIGN(x, a)
Definition: macros.h:78
AV_OPT_TYPE_BOOL
@ AV_OPT_TYPE_BOOL
Underlying C type is int.
Definition: opt.h:327
av_freep
#define av_freep(p)
Definition: tableprint_vlc.h:34
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:80
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:190
imgutils.h
flags
#define flags(name, subs,...)
Definition: cbs_av1.c:482
AVFrame::linesize
int linesize[AV_NUM_DATA_POINTERS]
For video, a positive or negative value, which is typically indicating the size in bytes of each pict...
Definition: frame.h:434
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:79
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:2070
width
#define width
Definition: dsp.h:85
STORE16
#define STORE16(pos)
child_next
static void * child_next(void *obj, void *prev)
Definition: vf_spp.c:59
SPPContext::log2_count
int log2_count
Definition: vf_spp.h:34
MODE_HARD
@ MODE_HARD
Definition: vf_spp.c:47
AV_OPT_TYPE_CONST
@ AV_OPT_TYPE_CONST
Special option type for declaring named constants.
Definition: opt.h:299
src
#define src
Definition: vp8dsp.c:248
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:146
dither
static const uint8_t dither[8][8]
Definition: vf_fspp.c:62