FFmpeg
vf_uspp.c
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1 /*
2  * Copyright (c) 2003 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  * Ultra Slow/Simple Post-processing filter.
25  *
26  * Originally written by Michael Niedermayer for the MPlayer project, and
27  * ported by Arwa Arif for FFmpeg.
28  */
29 
30 #include "libavutil/avassert.h"
31 #include "libavutil/imgutils.h"
32 #include "libavutil/mem.h"
33 #include "libavutil/mem_internal.h"
34 #include "libavutil/opt.h"
35 #include "libavutil/pixdesc.h"
36 #include "libavutil/video_enc_params.h"
37 #include "libavcodec/avcodec.h"
38 #include "internal.h"
39 #include "qp_table.h"
40 #include "avfilter.h"
41 #include "video.h"
42 
43 #define MAX_LEVEL 8 /* quality levels */
44 #define BLOCK 16
45 
46 typedef struct USPPContext {
47  const AVClass *av_class;
48  int log2_count;
49  int count;
50  int hsub, vsub;
51  int qp;
52  char *codec_name;
53  enum AVVideoEncParamsType qscale_type;
54  int temp_stride[3];
55  uint8_t *src[3];
56  uint16_t *temp[3];
57  int outbuf_size;
58  uint8_t *outbuf;
59  AVCodecContext *avctx_enc[BLOCK*BLOCK];
60  AVCodecContext *avctx_dec[BLOCK*BLOCK];
61  AVPacket *pkt [BLOCK*BLOCK];
62  AVFrame *frame [BLOCK*BLOCK];
63  AVFrame *frame_dec [BLOCK*BLOCK];
64  int8_t *non_b_qp_table;
65  int non_b_qp_stride;
66  int use_bframe_qp;
67  int quality;
68 } USPPContext;
69 
70 #define OFFSET(x) offsetof(USPPContext, x)
71 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
72 static const AVOption uspp_options[] = {
73  { "quality", "set quality", OFFSET(log2_count), AV_OPT_TYPE_INT, {.i64 = 3}, 0, MAX_LEVEL, FLAGS },
74  { "qp", "force a constant quantizer parameter", OFFSET(qp), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 63, FLAGS },
75  { "use_bframe_qp", "use B-frames' QP", OFFSET(use_bframe_qp), AV_OPT_TYPE_BOOL,{.i64 = 0}, 0, 1, FLAGS },
76  { "codec", "Codec name", OFFSET(codec_name), AV_OPT_TYPE_STRING, {.str = "snow"}, 0, 0, FLAGS },
77  { NULL }
78 };
79 
80 AVFILTER_DEFINE_CLASS(uspp);
81 
82 DECLARE_ALIGNED(8, static const uint8_t, dither)[8][8] = {
83  { 0*4, 48*4, 12*4, 60*4, 3*4, 51*4, 15*4, 63*4, },
84  { 32*4, 16*4, 44*4, 28*4, 35*4, 19*4, 47*4, 31*4, },
85  { 8*4, 56*4, 4*4, 52*4, 11*4, 59*4, 7*4, 55*4, },
86  { 40*4, 24*4, 36*4, 20*4, 43*4, 27*4, 39*4, 23*4, },
87  { 2*4, 50*4, 14*4, 62*4, 1*4, 49*4, 13*4, 61*4, },
88  { 34*4, 18*4, 46*4, 30*4, 33*4, 17*4, 45*4, 29*4, },
89  { 10*4, 58*4, 6*4, 54*4, 9*4, 57*4, 5*4, 53*4, },
90  { 42*4, 26*4, 38*4, 22*4, 41*4, 25*4, 37*4, 21*4, },
91 };
92 
93 static const uint8_t offset[511][2] = {
94  { 0, 0},
95  { 0, 0}, { 8, 8}, // quality 1
96  { 0, 0}, { 4, 4}, {12, 8}, { 8,12}, // quality 2
97  { 0, 0}, {10, 2}, { 4, 4}, {14, 6}, { 8, 8}, { 2,10}, {12,12}, { 6,14}, // quality 3
98 
99  { 0, 0}, {10, 2}, { 4, 4}, {14, 6}, { 8, 8}, { 2,10}, {12,12}, { 6,14},
100  { 5, 1}, {15, 3}, { 9, 5}, { 3, 7}, {13, 9}, { 7,11}, { 1,13}, {11,15}, // quality 4
101 
102  { 0, 0}, { 8, 0}, { 0, 8}, { 8, 8}, { 5, 1}, {13, 1}, { 5, 9}, {13, 9},
103  { 2, 2}, {10, 2}, { 2,10}, {10,10}, { 7, 3}, {15, 3}, { 7,11}, {15,11},
104  { 4, 4}, {12, 4}, { 4,12}, {12,12}, { 1, 5}, { 9, 5}, { 1,13}, { 9,13},
105  { 6, 6}, {14, 6}, { 6,14}, {14,14}, { 3, 7}, {11, 7}, { 3,15}, {11,15}, // quality 5
106 
107  { 0, 0}, { 8, 0}, { 0, 8}, { 8, 8}, { 4, 0}, {12, 0}, { 4, 8}, {12, 8},
108  { 1, 1}, { 9, 1}, { 1, 9}, { 9, 9}, { 5, 1}, {13, 1}, { 5, 9}, {13, 9},
109  { 3, 2}, {11, 2}, { 3,10}, {11,10}, { 7, 2}, {15, 2}, { 7,10}, {15,10},
110  { 2, 3}, {10, 3}, { 2,11}, {10,11}, { 6, 3}, {14, 3}, { 6,11}, {14,11},
111  { 0, 4}, { 8, 4}, { 0,12}, { 8,12}, { 4, 4}, {12, 4}, { 4,12}, {12,12},
112  { 1, 5}, { 9, 5}, { 1,13}, { 9,13}, { 5, 5}, {13, 5}, { 5,13}, {13,13},
113  { 3, 6}, {11, 6}, { 3,14}, {11,14}, { 7, 6}, {15, 6}, { 7,14}, {15,14},
114  { 2, 7}, {10, 7}, { 2,15}, {10,15}, { 6, 7}, {14, 7}, { 6,15}, {14,15}, // quality 6
115 
116  { 0, 0}, { 8, 0}, { 0, 8}, { 8, 8}, { 0, 2}, { 8, 2}, { 0,10}, { 8,10},
117  { 0, 4}, { 8, 4}, { 0,12}, { 8,12}, { 0, 6}, { 8, 6}, { 0,14}, { 8,14},
118  { 1, 1}, { 9, 1}, { 1, 9}, { 9, 9}, { 1, 3}, { 9, 3}, { 1,11}, { 9,11},
119  { 1, 5}, { 9, 5}, { 1,13}, { 9,13}, { 1, 7}, { 9, 7}, { 1,15}, { 9,15},
120  { 2, 0}, {10, 0}, { 2, 8}, {10, 8}, { 2, 2}, {10, 2}, { 2,10}, {10,10},
121  { 2, 4}, {10, 4}, { 2,12}, {10,12}, { 2, 6}, {10, 6}, { 2,14}, {10,14},
122  { 3, 1}, {11, 1}, { 3, 9}, {11, 9}, { 3, 3}, {11, 3}, { 3,11}, {11,11},
123  { 3, 5}, {11, 5}, { 3,13}, {11,13}, { 3, 7}, {11, 7}, { 3,15}, {11,15},
124  { 4, 0}, {12, 0}, { 4, 8}, {12, 8}, { 4, 2}, {12, 2}, { 4,10}, {12,10},
125  { 4, 4}, {12, 4}, { 4,12}, {12,12}, { 4, 6}, {12, 6}, { 4,14}, {12,14},
126  { 5, 1}, {13, 1}, { 5, 9}, {13, 9}, { 5, 3}, {13, 3}, { 5,11}, {13,11},
127  { 5, 5}, {13, 5}, { 5,13}, {13,13}, { 5, 7}, {13, 7}, { 5,15}, {13,15},
128  { 6, 0}, {14, 0}, { 6, 8}, {14, 8}, { 6, 2}, {14, 2}, { 6,10}, {14,10},
129  { 6, 4}, {14, 4}, { 6,12}, {14,12}, { 6, 6}, {14, 6}, { 6,14}, {14,14},
130  { 7, 1}, {15, 1}, { 7, 9}, {15, 9}, { 7, 3}, {15, 3}, { 7,11}, {15,11},
131  { 7, 5}, {15, 5}, { 7,13}, {15,13}, { 7, 7}, {15, 7}, { 7,15}, {15,15}, // quality 7
132 
133  { 0, 0}, { 8, 0}, { 0, 8}, { 8, 8}, { 4, 4}, {12, 4}, { 4,12}, {12,12},
134  { 0, 4}, { 8, 4}, { 0,12}, { 8,12}, { 4, 0}, {12, 0}, { 4, 8}, {12, 8},
135  { 2, 2}, {10, 2}, { 2,10}, {10,10}, { 6, 6}, {14, 6}, { 6,14}, {14,14},
136  { 2, 6}, {10, 6}, { 2,14}, {10,14}, { 6, 2}, {14, 2}, { 6,10}, {14,10},
137  { 0, 2}, { 8, 2}, { 0,10}, { 8,10}, { 4, 6}, {12, 6}, { 4,14}, {12,14},
138  { 0, 6}, { 8, 6}, { 0,14}, { 8,14}, { 4, 2}, {12, 2}, { 4,10}, {12,10},
139  { 2, 0}, {10, 0}, { 2, 8}, {10, 8}, { 6, 4}, {14, 4}, { 6,12}, {14,12},
140  { 2, 4}, {10, 4}, { 2,12}, {10,12}, { 6, 0}, {14, 0}, { 6, 8}, {14, 8},
141  { 1, 1}, { 9, 1}, { 1, 9}, { 9, 9}, { 5, 5}, {13, 5}, { 5,13}, {13,13},
142  { 1, 5}, { 9, 5}, { 1,13}, { 9,13}, { 5, 1}, {13, 1}, { 5, 9}, {13, 9},
143  { 3, 3}, {11, 3}, { 3,11}, {11,11}, { 7, 7}, {15, 7}, { 7,15}, {15,15},
144  { 3, 7}, {11, 7}, { 3,15}, {11,15}, { 7, 3}, {15, 3}, { 7,11}, {15,11},
145  { 1, 3}, { 9, 3}, { 1,11}, { 9,11}, { 5, 7}, {13, 7}, { 5,15}, {13,15},
146  { 1, 7}, { 9, 7}, { 1,15}, { 9,15}, { 5, 3}, {13, 3}, { 5,11}, {13,11}, // quality 8
147  { 3, 1}, {11, 1}, { 3, 9}, {11, 9}, { 7, 5}, {15, 5}, { 7,13}, {15,13},
148  { 3, 5}, {11, 5}, { 3,13}, {11,13}, { 7, 1}, {15, 1}, { 7, 9}, {15, 9},
149  { 0, 1}, { 8, 1}, { 0, 9}, { 8, 9}, { 4, 5}, {12, 5}, { 4,13}, {12,13},
150  { 0, 5}, { 8, 5}, { 0,13}, { 8,13}, { 4, 1}, {12, 1}, { 4, 9}, {12, 9},
151  { 2, 3}, {10, 3}, { 2,11}, {10,11}, { 6, 7}, {14, 7}, { 6,15}, {14,15},
152  { 2, 7}, {10, 7}, { 2,15}, {10,15}, { 6, 3}, {14, 3}, { 6,11}, {14,11},
153  { 0, 3}, { 8, 3}, { 0,11}, { 8,11}, { 4, 7}, {12, 7}, { 4,15}, {12,15},
154  { 0, 7}, { 8, 7}, { 0,15}, { 8,15}, { 4, 3}, {12, 3}, { 4,11}, {12,11},
155  { 2, 1}, {10, 1}, { 2, 9}, {10, 9}, { 6, 5}, {14, 5}, { 6,13}, {14,13},
156  { 2, 5}, {10, 5}, { 2,13}, {10,13}, { 6, 1}, {14, 1}, { 6, 9}, {14, 9},
157  { 1, 0}, { 9, 0}, { 1, 8}, { 9, 8}, { 5, 4}, {13, 4}, { 5,12}, {13,12},
158  { 1, 4}, { 9, 4}, { 1,12}, { 9,12}, { 5, 0}, {13, 0}, { 5, 8}, {13, 8},
159  { 3, 2}, {11, 2}, { 3,10}, {11,10}, { 7, 6}, {15, 6}, { 7,14}, {15,14},
160  { 3, 6}, {11, 6}, { 3,14}, {11,14}, { 7, 2}, {15, 2}, { 7,10}, {15,10},
161  { 1, 2}, { 9, 2}, { 1,10}, { 9,10}, { 5, 6}, {13, 6}, { 5,14}, {13,14},
162  { 1, 6}, { 9, 6}, { 1,14}, { 9,14}, { 5, 2}, {13, 2}, { 5,10}, {13,10},
163  { 3, 0}, {11, 0}, { 3, 8}, {11, 8}, { 7, 4}, {15, 4}, { 7,12}, {15,12},
164  { 3, 4}, {11, 4}, { 3,12}, {11,12}, { 7, 0}, {15, 0}, { 7, 8}, {15, 8},
165 };
166 
167 static void store_slice_c(uint8_t *dst, const uint16_t *src,
168  int dst_stride, int src_stride,
169  int width, int height, int log2_scale)
170 {
171  int y, x;
172 
173 #define STORE(pos) do { \
174  temp = ((src[x + y * src_stride + pos] << log2_scale) + d[pos]) >> 8; \
175  if (temp & 0x100) temp = ~(temp >> 31); \
176  dst[x + y * dst_stride + pos] = temp; \
177 } while (0)
178 
179  for (y = 0; y < height; y++) {
180  const uint8_t *d = dither[y&7];
181  for (x = 0; x < width; x += 8) {
182  int temp;
183  STORE(0);
184  STORE(1);
185  STORE(2);
186  STORE(3);
187  STORE(4);
188  STORE(5);
189  STORE(6);
190  STORE(7);
191  }
192  }
193 }
194 
195 static int filter_1phase(AVFilterContext *ctx, void *arg, int i, int nb_jobs)
196 {
197  USPPContext *p = ctx->priv;
198  int ret, x, y;
199  int width = ctx->inputs[0]->w;
200  int height = ctx->inputs[0]->h;
201 
202  const int x1 = offset[i+nb_jobs-1][0];
203  const int y1 = offset[i+nb_jobs-1][1];
204  const int x1c = x1 >> p->hsub;
205  const int y1c = y1 >> p->vsub;
206  const int BLOCKc = BLOCK >> p->hsub;
207  int offset;
208  AVPacket *pkt = p->pkt[i];
209 
210  av_packet_unref(pkt);
211  pkt->data = p->outbuf;
212  pkt->size = p->outbuf_size;
213 
214  p->frame[i]->linesize[0] = p->temp_stride[0];
215  p->frame[i]->linesize[1] = p->temp_stride[1];
216  p->frame[i]->linesize[2] = p->temp_stride[2];
217  p->frame[i]->height = height + BLOCK;
218  p->frame[i]->width = width + BLOCK;
219  p->frame[i]->data[0] = p->src[0] + x1 + y1 * p->frame[i]->linesize[0];
220  p->frame[i]->data[1] = p->src[1] + x1c + y1c * p->frame[i]->linesize[1];
221  p->frame[i]->data[2] = p->src[2] + x1c + y1c * p->frame[i]->linesize[2];
222  p->frame[i]->format = p->avctx_enc[i]->pix_fmt;
223  p->frame[i]->quality = p->quality;
224 
225  ret = avcodec_send_frame(p->avctx_enc[i], p->frame[i]);
226  if (ret < 0) {
227  av_log(p->avctx_enc[i], AV_LOG_ERROR, "Error sending a frame for encoding\n");
228  return ret;
229  }
230  ret = avcodec_receive_packet(p->avctx_enc[i], pkt);
231  if (ret < 0) {
232  av_log(p->avctx_enc[i], AV_LOG_ERROR, "Error receiving a packet from encoding\n");
233  return ret;
234  }
235 
236  if (p->avctx_enc[i]->flags & AV_CODEC_FLAG_RECON_FRAME) {
237  av_packet_unref(pkt);
238  ret = avcodec_receive_frame(p->avctx_enc[i], p->frame_dec[i]);
239  if (ret < 0) {
240  av_log(p->avctx_dec[i], AV_LOG_ERROR, "Error receiving a frame from encoding\n");
241  return ret;
242  }
243  } else {
244  ret = avcodec_send_packet(p->avctx_dec[i], pkt);
245  av_packet_unref(pkt);
246  if (ret < 0) {
247  av_log(p->avctx_dec[i], AV_LOG_ERROR, "Error sending a packet for decoding\n");
248  return ret;
249  }
250  ret = avcodec_receive_frame(p->avctx_dec[i], p->frame_dec[i]);
251  if (ret < 0) {
252  av_log(p->avctx_dec[i], AV_LOG_ERROR, "Error receiving a frame from decoding\n");
253  return ret;
254  }
255  }
256 
257  offset = (BLOCK-x1) + (BLOCK-y1) * p->frame_dec[i]->linesize[0];
258 
259  for (y = 0; y < height; y++)
260  for (x = 0; x < width; x++)
261  p->temp[0][x + y * p->temp_stride[0]] += p->frame_dec[i]->data[0][x + y * p->frame_dec[i]->linesize[0] + offset];
262 
263 
264  if (!p->frame_dec[i]->data[2] || !p->temp[2])
265  return 0;
266 
267  offset = (BLOCKc-x1c) + (BLOCKc-y1c) * p->frame_dec[i]->linesize[1];
268 
269  for (y = 0; y < AV_CEIL_RSHIFT(height, p->vsub); y++) {
270  for (x = 0; x < AV_CEIL_RSHIFT(width, p->hsub); x++) {
271  p->temp[1][x + y * p->temp_stride[1]] += p->frame_dec[i]->data[1][x + y * p->frame_dec[i]->linesize[1] + offset];
272  p->temp[2][x + y * p->temp_stride[2]] += p->frame_dec[i]->data[2][x + y * p->frame_dec[i]->linesize[2] + offset];
273  }
274  }
275 
276  return 0;
277 }
278 
279 static void filter(AVFilterContext *ctx, uint8_t *dst[3], uint8_t *src[3],
280  int dst_stride[3], int src_stride[3], int width,
281  int height, uint8_t *qp_store, int qp_stride)
282 {
283  USPPContext *p = ctx->priv;
284  int x, y, i, j;
285 
286  for (i = 0; i < 3; i++) {
287  int is_chroma = !!i;
288  int w = AV_CEIL_RSHIFT(width, is_chroma ? p->hsub : 0);
289  int h = AV_CEIL_RSHIFT(height, is_chroma ? p->vsub : 0);
290  int stride = p->temp_stride[i];
291  int block = BLOCK >> (is_chroma ? p->hsub : 0);
292 
293  if (!src[i] || !dst[i])
294  continue;
295  for (y = 0; y < h; y++) {
296  int index = block + block * stride + y * stride;
297 
298  memcpy(p->src[i] + index, src[i] + y * src_stride[i], w );
299  for (x = 0; x < block; x++) {
300  p->src[i][index - x - 1] = p->src[i][index + x ];
301  p->src[i][index + w + x ] = p->src[i][index + w - x - 1];
302  }
303  }
304  for (y = 0; y < block; y++) {
305  memcpy(p->src[i] + ( block-1-y) * stride, p->src[i] + ( y+block ) * stride, stride);
306  memcpy(p->src[i] + (h+block +y) * stride, p->src[i] + (h-y+block-1) * stride, stride);
307  }
308 
309  memset(p->temp[i], 0, (h + 2 * block) * stride * sizeof(int16_t));
310  }
311 
312  if (p->qp)
313  p->quality = p->qp * FF_QP2LAMBDA;
314  else {
315  int qpsum=0;
316  int qpcount = (height>>4) * (height>>4);
317 
318  for (y = 0; y < (height>>4); y++) {
319  for (x = 0; x < (width>>4); x++)
320  qpsum += qp_store[x + y * qp_stride];
321  }
322  p->quality = ff_norm_qscale((qpsum + qpcount/2) / qpcount, p->qscale_type) * FF_QP2LAMBDA;
323  }
324 // init per MB qscale stuff FIXME
325 
326  ff_filter_execute(ctx, filter_1phase, NULL, NULL, p->count);
327 
328  for (j = 0; j < 3; j++) {
329  int is_chroma = !!j;
330  if (!dst[j])
331  continue;
332  store_slice_c(dst[j], p->temp[j], dst_stride[j], p->temp_stride[j],
333  AV_CEIL_RSHIFT(width, is_chroma ? p->hsub : 0),
334  AV_CEIL_RSHIFT(height, is_chroma ? p->vsub : 0),
335  8-p->log2_count);
336  }
337 }
338 
339 static const enum AVPixelFormat pix_fmts[] = {
340  AV_PIX_FMT_YUV444P,
341  AV_PIX_FMT_YUV420P,
342  AV_PIX_FMT_YUV410P,
343  AV_PIX_FMT_YUVJ444P,
344  AV_PIX_FMT_YUVJ420P,
345  AV_PIX_FMT_GRAY8,
346  AV_PIX_FMT_NONE
347 };
348 
349 static int config_input(AVFilterLink *inlink)
350 {
351 
352  AVFilterContext *ctx = inlink->dst;
353  USPPContext *uspp = ctx->priv;
354  const int height = inlink->h;
355  const int width = inlink->w;
356  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
357  int i;
358  const AVCodec *enc = avcodec_find_encoder_by_name(uspp->codec_name);
359  const AVCodec *dec = avcodec_find_decoder_by_name(uspp->codec_name);
360  if (!enc) {
361  av_log(ctx, AV_LOG_ERROR, "encoder %s not found.\n", uspp->codec_name);
362  return AVERROR(EINVAL);
363  }
364  if (!dec) {
365  av_log(ctx, AV_LOG_ERROR, "decoder %s not found.\n", uspp->codec_name);
366  return AVERROR(EINVAL);
367  }
368 
369  uspp->hsub = desc->log2_chroma_w;
370  uspp->vsub = desc->log2_chroma_h;
371  uspp->count = 1<<uspp->log2_count;
372 
373  for (i = 0; i < 3; i++) {
374  int is_chroma = !!i;
375  int w = (width + 4 * BLOCK-1) & (~(2 * BLOCK-1));
376  int h = (height + 4 * BLOCK-1) & (~(2 * BLOCK-1));
377 
378  if (is_chroma) {
379  w = AV_CEIL_RSHIFT(w, uspp->hsub);
380  h = AV_CEIL_RSHIFT(h, uspp->vsub);
381  }
382 
383  uspp->temp_stride[i] = w;
384  if (!(uspp->temp[i] = av_malloc_array(uspp->temp_stride[i], h * sizeof(int16_t))))
385  return AVERROR(ENOMEM);
386  if (!(uspp->src [i] = av_malloc_array(uspp->temp_stride[i], h * sizeof(uint8_t))))
387  return AVERROR(ENOMEM);
388  }
389 
390  for (i = 0; i < uspp->count; i++) {
391  AVCodecContext *avctx_enc, *avctx_dec;
392  AVDictionary *opts = NULL;
393  int ret;
394 
395  if (!(uspp->avctx_enc[i] = avcodec_alloc_context3(NULL)))
396  return AVERROR(ENOMEM);
397 
398  avctx_enc = uspp->avctx_enc[i];
399  avctx_enc->width = width + BLOCK;
400  avctx_enc->height = height + BLOCK;
401  avctx_enc->time_base = (AVRational){1,25}; // meaningless
402  avctx_enc->gop_size = INT_MAX;
403  avctx_enc->max_b_frames = 0;
404  avctx_enc->pix_fmt = inlink->format;
405  avctx_enc->flags = AV_CODEC_FLAG_QSCALE | AV_CODEC_FLAG_LOW_DELAY;
406  if (enc->capabilities & AV_CODEC_CAP_ENCODER_RECON_FRAME) {
407  avctx_enc->flags |= AV_CODEC_FLAG_RECON_FRAME;
408  av_dict_set(&opts, "no_bitstream", "1", 0);
409  }
410  avctx_enc->strict_std_compliance = FF_COMPLIANCE_EXPERIMENTAL;
411  avctx_enc->global_quality = 123;
412  avctx_enc->thread_count = 1; // We do threading in the filter with muiltiple codecs
413  ret = avcodec_open2(avctx_enc, enc, &opts);
414  av_dict_free(&opts);
415  if (ret < 0)
416  return ret;
417  av_assert0(avctx_enc->codec);
418 
419 
420  if (!(enc->capabilities & AV_CODEC_CAP_ENCODER_RECON_FRAME)) {
421  if (!(uspp->avctx_dec[i] = avcodec_alloc_context3(NULL)))
422  return AVERROR(ENOMEM);
423  avctx_dec = uspp->avctx_dec[i];
424  avctx_dec->width = avctx_enc->width;
425  avctx_dec->height = avctx_enc->height;
426  avctx_dec->thread_count = 1;
427  ret = avcodec_open2(avctx_dec, dec, NULL);
428  if (ret < 0)
429  return ret;
430  }
431 
432  if (!(uspp->frame[i] = av_frame_alloc()))
433  return AVERROR(ENOMEM);
434  if (!(uspp->frame_dec[i] = av_frame_alloc()))
435  return AVERROR(ENOMEM);
436  if (!(uspp->pkt[i] = av_packet_alloc()))
437  return AVERROR(ENOMEM);
438  }
439 
440  uspp->outbuf_size = (width + BLOCK) * (height + BLOCK) * 10;
441  if (!(uspp->outbuf = av_malloc(uspp->outbuf_size)))
442  return AVERROR(ENOMEM);
443 
444  return 0;
445 }
446 
447 static int filter_frame(AVFilterLink *inlink, AVFrame *in)
448 {
449  AVFilterContext *ctx = inlink->dst;
450  USPPContext *uspp = ctx->priv;
451  AVFilterLink *outlink = ctx->outputs[0];
452  AVFrame *out = in;
453 
454  int qp_stride = 0;
455  int8_t *qp_table = NULL;
456  int ret = 0;
457 
458  /* if we are not in a constant user quantizer mode and we don't want to use
459  * the quantizers from the B-frames (B-frames often have a higher QP), we
460  * need to save the qp table from the last non B-frame; this is what the
461  * following code block does */
462  if (!uspp->qp && (uspp->use_bframe_qp || in->pict_type != AV_PICTURE_TYPE_B)) {
463  ret = ff_qp_table_extract(in, &qp_table, &qp_stride, NULL, &uspp->qscale_type);
464  if (ret < 0) {
465  av_frame_free(&in);
466  return ret;
467  }
468 
469  if (!uspp->use_bframe_qp && in->pict_type != AV_PICTURE_TYPE_B) {
470  av_freep(&uspp->non_b_qp_table);
471  uspp->non_b_qp_table = qp_table;
472  uspp->non_b_qp_stride = qp_stride;
473  }
474  }
475 
476  if (uspp->log2_count && !ctx->is_disabled) {
477  if (!uspp->use_bframe_qp && uspp->non_b_qp_table) {
478  qp_table = uspp->non_b_qp_table;
479  qp_stride = uspp->non_b_qp_stride;
480  }
481 
482  if (qp_table || uspp->qp) {
483 
484  /* get a new frame if in-place is not possible or if the dimensions
485  * are not multiple of 8 */
486  if (!av_frame_is_writable(in) || (inlink->w & 7) || (inlink->h & 7)) {
487  const int aligned_w = FFALIGN(inlink->w, 8);
488  const int aligned_h = FFALIGN(inlink->h, 8);
489 
490  out = ff_get_video_buffer(outlink, aligned_w, aligned_h);
491  if (!out) {
492  av_frame_free(&in);
493  if (qp_table != uspp->non_b_qp_table)
494  av_free(qp_table);
495  return AVERROR(ENOMEM);
496  }
497  av_frame_copy_props(out, in);
498  out->width = in->width;
499  out->height = in->height;
500  }
501 
502  filter(ctx, out->data, in->data, out->linesize, in->linesize,
503  inlink->w, inlink->h, qp_table, qp_stride);
504  }
505  }
506 
507  if (in != out) {
508  if (in->data[3])
509  av_image_copy_plane(out->data[3], out->linesize[3],
510  in ->data[3], in ->linesize[3],
511  inlink->w, inlink->h);
512  av_frame_free(&in);
513  }
514  ret = ff_filter_frame(outlink, out);
515  if (qp_table != uspp->non_b_qp_table)
516  av_freep(&qp_table);
517  return ret;
518 }
519 
520 static av_cold void uninit(AVFilterContext *ctx)
521 {
522  USPPContext *uspp = ctx->priv;
523  int i;
524 
525  for (i = 0; i < 3; i++) {
526  av_freep(&uspp->temp[i]);
527  av_freep(&uspp->src[i]);
528  }
529 
530  for (i = 0; i < uspp->count; i++) {
531  avcodec_free_context(&uspp->avctx_enc[i]);
532  avcodec_free_context(&uspp->avctx_dec[i]);
533  av_frame_free(&uspp->frame[i]);
534  av_frame_free(&uspp->frame_dec[i]);
535  av_packet_free(&uspp->pkt[i]);
536  }
537 
538  av_freep(&uspp->non_b_qp_table);
539  av_freep(&uspp->outbuf);
540 }
541 
542 static const AVFilterPad uspp_inputs[] = {
543  {
544  .name = "default",
545  .type = AVMEDIA_TYPE_VIDEO,
546  .config_props = config_input,
547  .filter_frame = filter_frame,
548  },
549 };
550 
551 const AVFilter ff_vf_uspp = {
552  .name = "uspp",
553  .description = NULL_IF_CONFIG_SMALL("Apply Ultra Simple / Slow Post-processing filter."),
554  .priv_size = sizeof(USPPContext),
555  .uninit = uninit,
556  FILTER_INPUTS(uspp_inputs),
557  FILTER_OUTPUTS(ff_video_default_filterpad),
558  FILTER_PIXFMTS_ARRAY(pix_fmts),
559  .priv_class = &uspp_class,
560  .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL | AVFILTER_FLAG_SLICE_THREADS,
561 };
STORE
#define STORE(pos)
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:112
uninit
static av_cold void uninit(AVFilterContext *ctx)
Definition: vf_uspp.c:520
USPPContext::src
uint8_t * src[3]
Definition: vf_uspp.c:55
USPPContext::qp
int qp
Definition: vf_uspp.c:51
av_packet_unref
void av_packet_unref(AVPacket *pkt)
Wipe the packet.
Definition: packet.c:427
AVCodec
AVCodec.
Definition: codec.h:187
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:71
filter_frame
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
Definition: vf_uspp.c:447
USPPContext::avctx_enc
AVCodecContext * avctx_enc[BLOCK *BLOCK]
Definition: vf_uspp.c:59
qp_table.h
avcodec_receive_packet
int avcodec_receive_packet(AVCodecContext *avctx, AVPacket *avpkt)
Read encoded data from the encoder.
Definition: encode.c:541
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
out
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:1015
av_pix_fmt_desc_get
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2965
FILTER_PIXFMTS_ARRAY
#define FILTER_PIXFMTS_ARRAY(array)
Definition: internal.h:162
AV_CODEC_FLAG_QSCALE
#define AV_CODEC_FLAG_QSCALE
Use fixed qscale.
Definition: avcodec.h:224
USPPContext::temp
uint16_t * temp[3]
Definition: vf_uspp.c:56
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
AV_CODEC_CAP_ENCODER_RECON_FRAME
#define AV_CODEC_CAP_ENCODER_RECON_FRAME
The encoder is able to output reconstructed frame data, i.e.
Definition: codec.h:174
av_frame_free
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:160
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:374
pixdesc.h
AVFrame::width
int width
Definition: frame.h:446
AVCodec::capabilities
int capabilities
Codec capabilities.
Definition: codec.h:206
w
uint8_t w
Definition: llviddspenc.c:38
AVPacket::data
uint8_t * data
Definition: packet.h:524
AVOption
AVOption.
Definition: opt.h:346
BLOCK
#define BLOCK
Definition: vf_uspp.c:44
USPPContext::frame
AVFrame * frame[BLOCK *BLOCK]
Definition: vf_uspp.c:62
offset
static const uint8_t offset[511][2]
Definition: vf_uspp.c:93
FF_COMPLIANCE_EXPERIMENTAL
#define FF_COMPLIANCE_EXPERIMENTAL
Allow nonstandardized experimental things.
Definition: defs.h:62
AVDictionary
Definition: dict.c:34
config_input
static int config_input(AVFilterLink *inlink)
Definition: vf_uspp.c:349
AVFilter::name
const char * name
Filter name.
Definition: avfilter.h:170
USPPContext::codec_name
char * codec_name
Definition: vf_uspp.c:52
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
USPPContext::vsub
int vsub
Definition: vf_uspp.c:50
av_packet_free
void av_packet_free(AVPacket **pkt)
Free the packet, if the packet is reference counted, it will be unreferenced first.
Definition: packet.c:74
AVFrame::data
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:395
av_malloc
#define av_malloc(s)
Definition: tableprint_vlc.h:30
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
USPPContext::use_bframe_qp
int use_bframe_qp
Definition: vf_uspp.c:66
AVCodecContext::codec
const struct AVCodec * codec
Definition: avcodec.h:454
AVCodecContext::thread_count
int thread_count
thread count is used to decide how many independent tasks should be passed to execute()
Definition: avcodec.h:1582
AVCodecContext::flags
int flags
AV_CODEC_FLAG_*.
Definition: avcodec.h:502
AV_CODEC_FLAG_LOW_DELAY
#define AV_CODEC_FLAG_LOW_DELAY
Force low delay.
Definition: avcodec.h:334
USPPContext::avctx_dec
AVCodecContext * avctx_dec[BLOCK *BLOCK]
Definition: vf_uspp.c:60
AVFilterPad
A filter pad used for either input or output.
Definition: internal.h:33
av_frame_alloc
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
Definition: frame.c:148
avassert.h
pkt
AVPacket * pkt
Definition: movenc.c:60
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:180
av_cold
#define av_cold
Definition: attributes.h:90
store_slice_c
static void store_slice_c(uint8_t *dst, const uint16_t *src, int dst_stride, int src_stride, int width, int height, int log2_scale)
Definition: vf_uspp.c:167
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
avcodec_alloc_context3
AVCodecContext * avcodec_alloc_context3(const AVCodec *codec)
Allocate an AVCodecContext and set its fields to default values.
Definition: options.c:149
width
#define width
AVCodecContext::global_quality
int global_quality
Global quality for codecs which cannot change it per frame.
Definition: avcodec.h:1239
AV_CEIL_RSHIFT
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:59
avcodec_receive_frame
int attribute_align_arg avcodec_receive_frame(AVCodecContext *avctx, AVFrame *frame)
Return decoded output data from a decoder or encoder (when the AV_CODEC_FLAG_RECON_FRAME flag is used...
Definition: avcodec.c:696
av_assert0
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:40
ctx
AVFormatContext * ctx
Definition: movenc.c:49
USPPContext::non_b_qp_stride
int non_b_qp_stride
Definition: vf_uspp.c:65
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_INPUTS
#define FILTER_INPUTS(array)
Definition: internal.h:182
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
arg
const char * arg
Definition: jacosubdec.c:67
if
if(ret)
Definition: filter_design.txt:179
opts
AVDictionary * opts
Definition: movenc.c:51
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:66
NULL
#define NULL
Definition: coverity.c:32
avcodec_find_decoder_by_name
const AVCodec * avcodec_find_decoder_by_name(const char *name)
Find a registered decoder with the specified name.
Definition: allcodecs.c:1001
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:709
AVFILTER_DEFINE_CLASS
AVFILTER_DEFINE_CLASS(uspp)
avcodec_free_context
void avcodec_free_context(AVCodecContext **avctx)
Free the codec context and everything associated with it and write NULL to the provided pointer.
Definition: options.c:164
AVRational
Rational number (pair of numerator and denominator).
Definition: rational.h:58
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
USPPContext::log2_count
int log2_count
Definition: vf_uspp.c:48
USPPContext::quality
int quality
Definition: vf_uspp.c:67
avcodec_open2
int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
Initialize the AVCodecContext to use the given AVCodec.
Definition: avcodec.c:142
dither
static const uint8_t dither[8][8]
Definition: vf_uspp.c:82
USPPContext::frame_dec
AVFrame * frame_dec[BLOCK *BLOCK]
Definition: vf_uspp.c:63
AV_PIX_FMT_GRAY8
@ AV_PIX_FMT_GRAY8
Y , 8bpp.
Definition: pixfmt.h:81
index
int index
Definition: gxfenc.c:90
AVCodecContext::time_base
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented.
Definition: avcodec.h:544
USPPContext::outbuf
uint8_t * outbuf
Definition: vf_uspp.c:58
AVFrame::pict_type
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:476
filter
static void filter(AVFilterContext *ctx, uint8_t *dst[3], uint8_t *src[3], int dst_stride[3], int src_stride[3], int width, int height, uint8_t *qp_store, int qp_stride)
Definition: vf_uspp.c:279
AVPacket::size
int size
Definition: packet.h:525
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
AVCodecContext::gop_size
int gop_size
the number of pictures in a group of pictures, or 0 for intra_only
Definition: avcodec.h:1031
USPPContext::av_class
const AVClass * av_class
Definition: vf_uspp.c:47
DECLARE_ALIGNED
#define DECLARE_ALIGNED(n, t, v)
Definition: mem_internal.h:109
AVFrame::quality
int quality
quality (between 1 (good) and FF_LAMBDA_MAX (bad))
Definition: frame.h:506
av_frame_is_writable
int av_frame_is_writable(AVFrame *frame)
Check if the frame data is writable.
Definition: frame.c:645
AVFrame::format
int format
format of the frame, -1 if unknown or unset Values correspond to enum AVPixelFormat for video frames,...
Definition: frame.h:461
height
#define height
av_packet_alloc
AVPacket * av_packet_alloc(void)
Allocate an AVPacket and set its fields to default values.
Definition: packet.c:63
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:223
USPPContext::count
int count
Definition: vf_uspp.c:49
internal.h
avcodec_send_packet
int avcodec_send_packet(AVCodecContext *avctx, const AVPacket *avpkt)
Supply raw packet data as input to a decoder.
Definition: decode.c:677
AV_CODEC_FLAG_RECON_FRAME
#define AV_CODEC_FLAG_RECON_FRAME
Request the encoder to output reconstructed frames, i.e. frames that would be produced by decoding th...
Definition: avcodec.h:264
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:256
MAX_LEVEL
#define MAX_LEVEL
Definition: vf_uspp.c:43
av_malloc_array
#define av_malloc_array(a, b)
Definition: tableprint_vlc.h:31
AVFilterPad::name
const char * name
Pad name.
Definition: internal.h:39
AVCodecContext::height
int height
Definition: avcodec.h:618
avcodec_send_frame
int avcodec_send_frame(AVCodecContext *avctx, const AVFrame *frame)
Supply a raw video or audio frame to the encoder.
Definition: encode.c:508
AVCodecContext::pix_fmt
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:657
USPPContext::pkt
AVPacket * pkt[BLOCK *BLOCK]
Definition: vf_uspp.c:61
avcodec.h
USPPContext
Definition: vf_uspp.c:46
stride
#define stride
Definition: h264pred_template.c:537
AVFilter
Filter definition.
Definition: avfilter.h:166
ret
ret
Definition: filter_design.txt:187
pix_fmts
static enum AVPixelFormat pix_fmts[]
Definition: vf_uspp.c:339
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
AVCodecContext::strict_std_compliance
int strict_std_compliance
strictly follow the standard (MPEG-4, ...).
Definition: avcodec.h:1379
uspp_options
static const AVOption uspp_options[]
Definition: vf_uspp.c:72
AVCodecContext
main external API structure.
Definition: avcodec.h:445
AVFrame::height
int height
Definition: frame.h:446
uspp_inputs
static const AVFilterPad uspp_inputs[]
Definition: vf_uspp.c:542
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
Definition: opt.h:235
avfilter.h
temp
else temp
Definition: vf_mcdeint.c:263
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:407
USPPContext::non_b_qp_table
int8_t * non_b_qp_table
Definition: vf_uspp.c:64
AVFILTER_FLAG_SLICE_THREADS
#define AVFILTER_FLAG_SLICE_THREADS
The filter supports multithreading by splitting frames into multiple parts and processing them concur...
Definition: avfilter.h:117
desc
const char * desc
Definition: libsvtav1.c:75
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
filter_1phase
static int filter_1phase(AVFilterContext *ctx, void *arg, int i, int nb_jobs)
Definition: vf_uspp.c:195
mem.h
AVCodecContext::max_b_frames
int max_b_frames
maximum number of B-frames between non-B-frames Note: The output will be delayed by max_b_frames+1 re...
Definition: avcodec.h:795
FLAGS
#define FLAGS
Definition: vf_uspp.c:71
USPPContext::qscale_type
enum AVVideoEncParamsType qscale_type
Definition: vf_uspp.c:53
AVPixFmtDescriptor
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:69
av_free
#define av_free(p)
Definition: tableprint_vlc.h:33
FFALIGN
#define FFALIGN(x, a)
Definition: macros.h:78
AVPacket
This structure stores compressed data.
Definition: packet.h:501
AV_OPT_TYPE_BOOL
@ AV_OPT_TYPE_BOOL
Definition: opt.h:251
FILTER_OUTPUTS
#define FILTER_OUTPUTS(array)
Definition: internal.h:183
av_freep
#define av_freep(p)
Definition: tableprint_vlc.h:34
av_dict_set
int av_dict_set(AVDictionary **pm, const char *key, const char *value, int flags)
Set the given entry in *pm, overwriting an existing entry.
Definition: dict.c:88
src
INIT_CLIP pixel * src
Definition: h264pred_template.c:418
d
d
Definition: ffmpeg_filter.c:424
USPPContext::outbuf_size
int outbuf_size
Definition: vf_uspp.c:57
AVCodecContext::width
int width
picture width / height.
Definition: avcodec.h:618
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:155
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:419
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
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:27
h
h
Definition: vp9dsp_template.c:2038
OFFSET
#define OFFSET(x)
Definition: vf_uspp.c:70
AV_OPT_TYPE_STRING
@ AV_OPT_TYPE_STRING
Definition: opt.h:239
FF_QP2LAMBDA
#define FF_QP2LAMBDA
factor to convert from H.263 QP to lambda
Definition: avutil.h:227
ff_filter_execute
static av_always_inline int ff_filter_execute(AVFilterContext *ctx, avfilter_action_func *func, void *arg, int *ret, int nb_jobs)
Definition: internal.h:134
ff_vf_uspp
const AVFilter ff_vf_uspp
Definition: vf_uspp.c:551
video_enc_params.h
USPPContext::hsub
int hsub
Definition: vf_uspp.c:50
avcodec_find_encoder_by_name
const AVCodec * avcodec_find_encoder_by_name(const char *name)
Find a registered encoder with the specified name.
Definition: allcodecs.c:996
USPPContext::temp_stride
int temp_stride[3]
Definition: vf_uspp.c:54
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