FFmpeg
vf_pp7.c
Go to the documentation of this file.
1 /*
2  * Copyright (c) 2005 Michael Niedermayer <michaelni@gmx.at>
3  * Copyright (c) 2014 Arwa Arif <arwaarif1994@gmail.com>
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  * Postprocessing filter - 7
25  *
26  * Originally written by Michael Niedermayer for the MPlayer
27  * project, and ported by Arwa Arif for FFmpeg.
28  */
29 
30 #include "libavutil/imgutils.h"
31 #include "libavutil/mem.h"
32 #include "libavutil/mem_internal.h"
33 #include "libavutil/opt.h"
34 #include "libavutil/pixdesc.h"
35 #include "libavutil/video_enc_params.h"
36 
37 #include "avfilter.h"
38 #include "filters.h"
39 #include "qp_table.h"
40 #include "vf_pp7dsp.h"
41 #include "video.h"
42 
43 enum mode {
44  MODE_HARD,
45  MODE_SOFT,
46  MODE_MEDIUM
47 };
48 
49 typedef struct PP7Context {
50  const AVClass *class;
51  int thres2[99][16];
52 
53  int qp;
54  int mode;
55  enum AVVideoEncParamsType qscale_type;
56  int hsub;
57  int vsub;
58  int temp_stride;
59  uint8_t *src;
60 
61  int (*requantize)(const struct PP7Context *p, const int16_t *src, int qp);
62 
63  PP7DSPContext pp7dsp;
64 } PP7Context;
65 
66 #define OFFSET(x) offsetof(PP7Context, x)
67 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
68 static const AVOption pp7_options[] = {
69  { "qp", "force a constant quantizer parameter", OFFSET(qp), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 64, FLAGS },
70  { "mode", "set thresholding mode", OFFSET(mode), AV_OPT_TYPE_INT, {.i64 = MODE_MEDIUM}, 0, 2, FLAGS, .unit = "mode" },
71  { "hard", "hard thresholding", 0, AV_OPT_TYPE_CONST, {.i64 = MODE_HARD}, INT_MIN, INT_MAX, FLAGS, .unit = "mode" },
72  { "soft", "soft thresholding", 0, AV_OPT_TYPE_CONST, {.i64 = MODE_SOFT}, INT_MIN, INT_MAX, FLAGS, .unit = "mode" },
73  { "medium", "medium thresholding", 0, AV_OPT_TYPE_CONST, {.i64 = MODE_MEDIUM}, INT_MIN, INT_MAX, FLAGS, .unit = "mode" },
74  { NULL }
75 };
76 
77 AVFILTER_DEFINE_CLASS(pp7);
78 
79 DECLARE_ALIGNED(8, static const uint8_t, dither)[8][8] = {
80  { 0, 48, 12, 60, 3, 51, 15, 63, },
81  { 32, 16, 44, 28, 35, 19, 47, 31, },
82  { 8, 56, 4, 52, 11, 59, 7, 55, },
83  { 40, 24, 36, 20, 43, 27, 39, 23, },
84  { 2, 50, 14, 62, 1, 49, 13, 61, },
85  { 34, 18, 46, 30, 33, 17, 45, 29, },
86  { 10, 58, 6, 54, 9, 57, 5, 53, },
87  { 42, 26, 38, 22, 41, 25, 37, 21, },
88 };
89 
90 #define N0 4
91 #define N1 5
92 #define N2 10
93 #define SN0 2
94 #define SN1 2.2360679775
95 #define SN2 3.16227766017
96 #define N (1 << 16)
97 
98 static const int factor[16] = {
99  N / (N0 * N0), N / (N0 * N1), N / (N0 * N0), N / (N0 * N2),
100  N / (N1 * N0), N / (N1 * N1), N / (N1 * N0), N / (N1 * N2),
101  N / (N0 * N0), N / (N0 * N1), N / (N0 * N0), N / (N0 * N2),
102  N / (N2 * N0), N / (N2 * N1), N / (N2 * N0), N / (N2 * N2),
103 };
104 
105 static void init_thres2(PP7Context *p)
106 {
107  int qp, i;
108  int bias = 0; //FIXME
109 
110  for (qp = 0; qp < 99; qp++) {
111  for (i = 0; i < 16; i++) {
112  p->thres2[qp][i] = ((i&1) ? SN2 : SN0) * ((i&4) ? SN2 : SN0) * FFMAX(1, qp) * (1<<2) - 1 - bias;
113  }
114  }
115 }
116 
117 static inline void dctA_c(int16_t *dst, const uint8_t *src, int stride)
118 {
119  int i;
120 
121  for (i = 0; i < 4; i++) {
122  int s0 = src[0 * stride] + src[6 * stride];
123  int s1 = src[1 * stride] + src[5 * stride];
124  int s2 = src[2 * stride] + src[4 * stride];
125  int s3 = src[3 * stride];
126  int s = s3 + s3;
127  s3 = s - s0;
128  s0 = s + s0;
129  s = s2 + s1;
130  s2 = s2 - s1;
131  dst[0] = s0 + s;
132  dst[2] = s0 - s;
133  dst[1] = 2 * s3 + s2;
134  dst[3] = s3 - 2 * s2;
135  src++;
136  dst += 4;
137  }
138 }
139 
140 static int hardthresh_c(const PP7Context *p, const int16_t *src, int qp)
141 {
142  int i;
143  int a;
144 
145  a = src[0] * factor[0];
146  for (i = 1; i < 16; i++) {
147  unsigned int threshold1 = p->thres2[qp][i];
148  unsigned int threshold2 = threshold1 << 1;
149  int level = src[i];
150  if (((unsigned)(level + threshold1)) > threshold2)
151  a += level * factor[i];
152  }
153  return (a + (1 << 11)) >> 12;
154 }
155 
156 static int mediumthresh_c(const PP7Context *p, const int16_t *src, int qp)
157 {
158  int i;
159  int a;
160 
161  a = src[0] * factor[0];
162  for (i = 1; i < 16; i++) {
163  unsigned int threshold1 = p->thres2[qp][i];
164  unsigned int threshold2 = threshold1 << 1;
165  int level = src[i];
166  if (((unsigned)(level + threshold1)) > threshold2) {
167  if (((unsigned)(level + 2 * threshold1)) > 2 * threshold2)
168  a += level * factor[i];
169  else {
170  if (level > 0)
171  a += 2 * (level - (int)threshold1) * factor[i];
172  else
173  a += 2 * (level + (int)threshold1) * factor[i];
174  }
175  }
176  }
177  return (a + (1 << 11)) >> 12;
178 }
179 
180 static int softthresh_c(const PP7Context *p, const int16_t *src, int qp)
181 {
182  int i;
183  int a;
184 
185  a = src[0] * factor[0];
186  for (i = 1; i < 16; i++) {
187  unsigned int threshold1 = p->thres2[qp][i];
188  unsigned int threshold2 = threshold1 << 1;
189  int level = src[i];
190  if (((unsigned)(level + threshold1)) > threshold2) {
191  if (level > 0)
192  a += (level - (int)threshold1) * factor[i];
193  else
194  a += (level + (int)threshold1) * factor[i];
195  }
196  }
197  return (a + (1 << 11)) >> 12;
198 }
199 
200 static void filter(PP7Context *p, uint8_t *dst, const uint8_t *src,
201  int dst_stride, int src_stride,
202  int width, int height,
203  const uint8_t *qp_store, int qp_stride, int is_luma)
204 {
205  int x, y;
206  const int stride = is_luma ? p->temp_stride : ((width + 16 + 15) & (~15));
207  uint8_t *p_src = p->src + 8 * stride;
208  int16_t *block = (int16_t *)p->src;
209  int16_t *temp = (int16_t *)(p->src + 32);
210 
211  if (!src || !dst) return;
212  for (y = 0; y < height; y++) {
213  int index = 8 + 8 * stride + y * stride;
214  memcpy(p_src + index, src + y * src_stride, width);
215  for (x = 0; x < 8; x++) {
216  p_src[index - x - 1]= p_src[index + x ];
217  p_src[index + width + x ]= p_src[index + width - x - 1];
218  }
219  }
220  for (y = 0; y < 8; y++) {
221  memcpy(p_src + ( 7 - y ) * stride, p_src + ( y + 8 ) * stride, stride);
222  memcpy(p_src + (height + 8 + y) * stride, p_src + (height - y + 7) * stride, stride);
223  }
224  //FIXME (try edge emu)
225 
226  for (y = 0; y < height; y++) {
227  for (x = -8; x < 0; x += 4) {
228  const int index = x + y * stride + (8 - 3) * (1 + stride) + 8; //FIXME silly offset
229  int16_t *tp = temp + 4 * x;
230 
231  dctA_c(tp + 4 * 8, p_src + index, stride);
232  }
233  for (x = 0; x < width; ) {
234  const int qps = 3 + is_luma;
235  int qp;
236  int end = FFMIN(x + 8, width);
237 
238  if (p->qp)
239  qp = p->qp;
240  else {
241  qp = qp_store[ (FFMIN(x, width - 1) >> qps) + (FFMIN(y, height - 1) >> qps) * qp_stride];
242  qp = ff_norm_qscale(qp, p->qscale_type);
243  }
244  for (; x < end; x++) {
245  const int index = x + y * stride + (8 - 3) * (1 + stride) + 8; //FIXME silly offset
246  int16_t *tp = temp + 4 * x;
247  int v;
248 
249  if ((x & 3) == 0)
250  dctA_c(tp + 4 * 8, p_src + index, stride);
251 
252  p->pp7dsp.dctB(block, tp);
253 
254  v = p->requantize(p, block, qp);
255  v = (v + dither[y & 7][x & 7]) >> 6;
256  if ((unsigned)v > 255)
257  v = (-v) >> 31;
258  dst[x + y * dst_stride] = v;
259  }
260  }
261  }
262 }
263 
264 static const enum AVPixelFormat pix_fmts[] = {
265  AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV422P,
266  AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV411P,
267  AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV440P,
268  AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ422P,
269  AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ440P,
270  AV_PIX_FMT_GBRP,
271  AV_PIX_FMT_GRAY8, AV_PIX_FMT_NONE
272 };
273 
274 static int config_input(AVFilterLink *inlink)
275 {
276  AVFilterContext *ctx = inlink->dst;
277  PP7Context *pp7 = ctx->priv;
278  const int h = FFALIGN(inlink->h + 16, 16);
279  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
280 
281  pp7->hsub = desc->log2_chroma_w;
282  pp7->vsub = desc->log2_chroma_h;
283 
284  pp7->temp_stride = FFALIGN(inlink->w + 16, 16);
285  pp7->src = av_malloc_array(pp7->temp_stride, (h + 8) * sizeof(uint8_t));
286 
287  if (!pp7->src)
288  return AVERROR(ENOMEM);
289 
290  init_thres2(pp7);
291 
292  switch (pp7->mode) {
293  case 0: pp7->requantize = hardthresh_c; break;
294  case 1: pp7->requantize = softthresh_c; break;
295  default:
296  case 2: pp7->requantize = mediumthresh_c; break;
297  }
298 
299  ff_pp7dsp_init(&pp7->pp7dsp);
300 
301  return 0;
302 }
303 
304 static int filter_frame(AVFilterLink *inlink, AVFrame *in)
305 {
306  AVFilterContext *ctx = inlink->dst;
307  PP7Context *pp7 = ctx->priv;
308  AVFilterLink *outlink = ctx->outputs[0];
309  AVFrame *out = in;
310 
311  int qp_stride = 0;
312  int8_t *qp_table = NULL;
313 
314  if (!pp7->qp) {
315  int ret = ff_qp_table_extract(in, &qp_table, &qp_stride, NULL, &pp7->qscale_type);
316  if (ret < 0) {
317  av_frame_free(&in);
318  return ret;
319  }
320  }
321 
322  if (!ctx->is_disabled) {
323  const int cw = AV_CEIL_RSHIFT(inlink->w, pp7->hsub);
324  const int ch = AV_CEIL_RSHIFT(inlink->h, pp7->vsub);
325 
326  /* get a new frame if in-place is not possible or if the dimensions
327  * are not multiple of 8 */
328  if (!av_frame_is_writable(in) || (inlink->w & 7) || (inlink->h & 7)) {
329  const int aligned_w = FFALIGN(inlink->w, 8);
330  const int aligned_h = FFALIGN(inlink->h, 8);
331 
332  out = ff_get_video_buffer(outlink, aligned_w, aligned_h);
333  if (!out) {
334  av_frame_free(&in);
335  av_freep(&qp_table);
336  return AVERROR(ENOMEM);
337  }
338  av_frame_copy_props(out, in);
339  out->width = in->width;
340  out->height = in->height;
341  }
342 
343  if (qp_table || pp7->qp) {
344 
345  filter(pp7, out->data[0], in->data[0], out->linesize[0], in->linesize[0],
346  inlink->w, inlink->h, qp_table, qp_stride, 1);
347  filter(pp7, out->data[1], in->data[1], out->linesize[1], in->linesize[1],
348  cw, ch, qp_table, qp_stride, 0);
349  filter(pp7, out->data[2], in->data[2], out->linesize[2], in->linesize[2],
350  cw, ch, qp_table, qp_stride, 0);
351  }
352  }
353 
354  if (in != out) {
355  if (in->data[3])
356  av_image_copy_plane(out->data[3], out->linesize[3],
357  in ->data[3], in ->linesize[3],
358  inlink->w, inlink->h);
359  av_frame_free(&in);
360  }
361  av_freep(&qp_table);
362  return ff_filter_frame(outlink, out);
363 }
364 
365 static av_cold void uninit(AVFilterContext *ctx)
366 {
367  PP7Context *pp7 = ctx->priv;
368  av_freep(&pp7->src);
369 }
370 
371 static const AVFilterPad pp7_inputs[] = {
372  {
373  .name = "default",
374  .type = AVMEDIA_TYPE_VIDEO,
375  .config_props = config_input,
376  .filter_frame = filter_frame,
377  },
378 };
379 
380 const FFFilter ff_vf_pp7 = {
381  .p.name = "pp7",
382  .p.description = NULL_IF_CONFIG_SMALL("Apply Postprocessing 7 filter."),
383  .p.priv_class = &pp7_class,
384  .p.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL,
385  .priv_size = sizeof(PP7Context),
386  .uninit = uninit,
387  FILTER_INPUTS(pp7_inputs),
388  FILTER_OUTPUTS(ff_video_default_filterpad),
389  FILTER_PIXFMTS_ARRAY(pix_fmts),
390 };
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:89
factor
static const int factor[16]
Definition: vf_pp7.c:98
N1
#define N1
Definition: vf_pp7.c:91
ff_pp7dsp_init
static void ff_pp7dsp_init(PP7DSPContext *pp7dsp)
Definition: vf_pp7dsp.h:56
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:71
level
uint8_t level
Definition: svq3.c:208
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
OFFSET
#define OFFSET(x)
Definition: vf_pp7.c:66
out
static FILE * out
Definition: movenc.c:55
ff_filter_frame
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1068
av_pix_fmt_desc_get
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:3456
MODE_MEDIUM
@ MODE_MEDIUM
Definition: vf_pp7.c:46
N0
#define N0
Definition: vf_pp7.c:90
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
init_thres2
static void init_thres2(PP7Context *p)
Definition: vf_pp7.c:105
av_frame_free
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:64
mode
Definition: swscale.c:60
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:459
pixdesc.h
AVFrame::width
int width
Definition: frame.h:531
AVOption
AVOption.
Definition: opt.h:429
pp7_options
static const AVOption pp7_options[]
Definition: vf_pp7.c:68
filters.h
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
FFMAX
#define FFMAX(a, b)
Definition: macros.h:47
AVFilter::name
const char * name
Filter name.
Definition: avfilter.h:220
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
video.h
AVFrame::data
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:480
SN0
#define SN0
Definition: vf_pp7.c:93
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
FILTER_PIXFMTS_ARRAY
#define FILTER_PIXFMTS_ARRAY(array)
Definition: filters.h:244
ff_vf_pp7
const FFFilter ff_vf_pp7
Definition: vf_pp7.c:380
AVFilterPad
A filter pad used for either input or output.
Definition: filters.h:40
config_input
static int config_input(AVFilterLink *inlink)
Definition: vf_pp7.c:274
av_cold
#define av_cold
Definition: attributes.h:119
AVVideoEncParamsType
AVVideoEncParamsType
Definition: video_enc_params.h:28
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
FFFilter
Definition: filters.h:267
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
dither
static const uint8_t dither[8][8]
Definition: vf_pp7.c:79
s
#define s(width, name)
Definition: cbs_vp9.c:198
FILTER_OUTPUTS
#define FILTER_OUTPUTS(array)
Definition: filters.h:265
pix_fmts
static enum AVPixelFormat pix_fmts[]
Definition: vf_pp7.c:264
filter
static void filter(PP7Context *p, uint8_t *dst, const uint8_t *src, int dst_stride, int src_stride, int width, int height, const uint8_t *qp_store, int qp_stride, int is_luma)
Definition: vf_pp7.c:200
AV_CEIL_RSHIFT
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:60
ctx
static AVFormatContext * ctx
Definition: movenc.c:49
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
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_pp7dsp.h
PP7Context::requantize
int(* requantize)(const struct PP7Context *p, const int16_t *src, int qp)
Definition: vf_pp7.c:61
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:76
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:599
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
FLAGS
#define FLAGS
Definition: vf_pp7.c:67
AV_PIX_FMT_GRAY8
@ AV_PIX_FMT_GRAY8
Y , 8bpp.
Definition: pixfmt.h:81
index
int index
Definition: gxfenc.c:90
PP7Context::temp_stride
int temp_stride
Definition: vf_pp7.c:58
mediumthresh_c
static int mediumthresh_c(const PP7Context *p, const int16_t *src, int qp)
Definition: vf_pp7.c:156
N2
#define N2
Definition: vf_pp7.c:92
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
SN2
#define SN2
Definition: vf_pp7.c:95
height
#define height
Definition: dsp.h:89
DECLARE_ALIGNED
#define DECLARE_ALIGNED(n, t, v)
Definition: mem_internal.h:104
dst
uint8_t ptrdiff_t const uint8_t ptrdiff_t int intptr_t intptr_t int int16_t * dst
Definition: dsp.h:87
softthresh_c
static int softthresh_c(const PP7Context *p, const int16_t *src, int qp)
Definition: vf_pp7.c:180
i
#define i(width, name, range_min, range_max)
Definition: cbs_h264.c:63
MODE_SOFT
@ MODE_SOFT
Definition: vf_pp7.c:45
PP7Context::pp7dsp
PP7DSPContext pp7dsp
Definition: vf_pp7.c:63
av_frame_is_writable
int av_frame_is_writable(AVFrame *frame)
Check if the frame data is writable.
Definition: frame.c:535
AVFILTER_DEFINE_CLASS
AVFILTER_DEFINE_CLASS(pp7)
a
The reader does not expect b to be semantically here and if the code is changed by maybe adding a a division or other the signedness will almost certainly be mistaken To avoid this confusion a new type was SUINT is the C unsigned type but it holds a signed int to use the same example SUINT a
Definition: undefined.txt:41
PP7Context::hsub
int hsub
Definition: vf_pp7.c:56
PP7DSPContext
Definition: vf_pp7dsp.h:29
PP7Context::qscale_type
enum AVVideoEncParamsType qscale_type
Definition: vf_pp7.c:55
pp7_inputs
static const AVFilterPad pp7_inputs[]
Definition: vf_pp7.c:371
filter_frame
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
Definition: vf_pp7.c:304
av_malloc_array
#define av_malloc_array(a, b)
Definition: tableprint_vlc.h:32
MODE_HARD
@ MODE_HARD
Definition: vf_pp7.c:44
PP7Context::src
uint8_t * src
Definition: vf_pp7.c:59
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
PP7Context::thres2
int thres2[99][16]
Definition: vf_pp7.c:51
AVFilterPad::name
const char * name
Pad name.
Definition: filters.h:46
PP7Context::vsub
int vsub
Definition: vf_pp7.c:57
PP7Context::qp
int qp
Definition: vf_pp7.c:53
ret
ret
Definition: filter_design.txt:187
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
FILTER_INPUTS
#define FILTER_INPUTS(array)
Definition: filters.h:264
uninit
static av_cold void uninit(AVFilterContext *ctx)
Definition: vf_pp7.c:365
AVFrame::height
int height
Definition: frame.h:531
PP7Context::mode
int mode
Definition: vf_pp7.c:54
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
avfilter.h
temp
else temp
Definition: vf_mcdeint.c:271
Windows::Graphics::DirectX::Direct3D11::p
IDirect3DDxgiInterfaceAccess _COM_Outptr_ void ** p
Definition: vsrc_gfxcapture_winrt.hpp:53
dctA_c
static void dctA_c(int16_t *dst, const uint8_t *src, int stride)
Definition: vf_pp7.c:117
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:274
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:83
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:200
FFFilter::p
AVFilter p
The public AVFilter.
Definition: filters.h:271
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_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:80
PP7Context
Definition: vf_pp7.c:49
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:205
imgutils.h
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:504
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
stride
#define stride
Definition: h264pred_template.c:536
width
#define width
Definition: dsp.h:89
AV_OPT_TYPE_CONST
@ AV_OPT_TYPE_CONST
Special option type for declaring named constants.
Definition: opt.h:299
hardthresh_c
static int hardthresh_c(const PP7Context *p, const int16_t *src, int qp)
Definition: vf_pp7.c:140
N
#define N
Definition: vf_pp7.c:96
src
#define src
Definition: vp8dsp.c:248
video_enc_params.h
Generated on Sun May 17 2026 19:23:21 for FFmpeg by   doxygen 1.8.17