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_internal.h"
33 #include "libavutil/opt.h"
34 #include "libavutil/pixdesc.h"
35 #include "libavutil/video_enc_params.h"
36 #include "libavcodec/avcodec.h"
37 #include "internal.h"
38 #include "qp_table.h"
39 #include "avfilter.h"
40 #include "video.h"
41 
42 #define MAX_LEVEL 8 /* quality levels */
43 #define BLOCK 16
44 
45 typedef struct USPPContext {
46  const AVClass *av_class;
47  int log2_count;
48  int count;
49  int hsub, vsub;
50  int qp;
51  char *codec_name;
52  enum AVVideoEncParamsType qscale_type;
53  int temp_stride[3];
54  uint8_t *src[3];
55  uint16_t *temp[3];
56  int outbuf_size;
57  uint8_t *outbuf;
58  AVCodecContext *avctx_enc[BLOCK*BLOCK];
59  AVCodecContext *avctx_dec[BLOCK*BLOCK];
60  AVPacket *pkt [BLOCK*BLOCK];
61  AVFrame *frame [BLOCK*BLOCK];
62  AVFrame *frame_dec [BLOCK*BLOCK];
63  int8_t *non_b_qp_table;
64  int non_b_qp_stride;
65  int use_bframe_qp;
66  int quality;
67 } USPPContext;
68 
69 #define OFFSET(x) offsetof(USPPContext, x)
70 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
71 static const AVOption uspp_options[] = {
72  { "quality", "set quality", OFFSET(log2_count), AV_OPT_TYPE_INT, {.i64 = 3}, 0, MAX_LEVEL, FLAGS },
73  { "qp", "force a constant quantizer parameter", OFFSET(qp), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 63, FLAGS },
74  { "use_bframe_qp", "use B-frames' QP", OFFSET(use_bframe_qp), AV_OPT_TYPE_BOOL,{.i64 = 0}, 0, 1, FLAGS },
75  { "codec", "Codec name", OFFSET(codec_name), AV_OPT_TYPE_STRING, {.str = "snow"}, 0, 0, FLAGS },
76  { NULL }
77 };
78 
79 AVFILTER_DEFINE_CLASS(uspp);
80 
81 DECLARE_ALIGNED(8, static const uint8_t, dither)[8][8] = {
82  { 0*4, 48*4, 12*4, 60*4, 3*4, 51*4, 15*4, 63*4, },
83  { 32*4, 16*4, 44*4, 28*4, 35*4, 19*4, 47*4, 31*4, },
84  { 8*4, 56*4, 4*4, 52*4, 11*4, 59*4, 7*4, 55*4, },
85  { 40*4, 24*4, 36*4, 20*4, 43*4, 27*4, 39*4, 23*4, },
86  { 2*4, 50*4, 14*4, 62*4, 1*4, 49*4, 13*4, 61*4, },
87  { 34*4, 18*4, 46*4, 30*4, 33*4, 17*4, 45*4, 29*4, },
88  { 10*4, 58*4, 6*4, 54*4, 9*4, 57*4, 5*4, 53*4, },
89  { 42*4, 26*4, 38*4, 22*4, 41*4, 25*4, 37*4, 21*4, },
90 };
91 
92 static const uint8_t offset[511][2] = {
93  { 0, 0},
94  { 0, 0}, { 8, 8}, // quality 1
95  { 0, 0}, { 4, 4}, {12, 8}, { 8,12}, // quality 2
96  { 0, 0}, {10, 2}, { 4, 4}, {14, 6}, { 8, 8}, { 2,10}, {12,12}, { 6,14}, // quality 3
97 
98  { 0, 0}, {10, 2}, { 4, 4}, {14, 6}, { 8, 8}, { 2,10}, {12,12}, { 6,14},
99  { 5, 1}, {15, 3}, { 9, 5}, { 3, 7}, {13, 9}, { 7,11}, { 1,13}, {11,15}, // quality 4
100 
101  { 0, 0}, { 8, 0}, { 0, 8}, { 8, 8}, { 5, 1}, {13, 1}, { 5, 9}, {13, 9},
102  { 2, 2}, {10, 2}, { 2,10}, {10,10}, { 7, 3}, {15, 3}, { 7,11}, {15,11},
103  { 4, 4}, {12, 4}, { 4,12}, {12,12}, { 1, 5}, { 9, 5}, { 1,13}, { 9,13},
104  { 6, 6}, {14, 6}, { 6,14}, {14,14}, { 3, 7}, {11, 7}, { 3,15}, {11,15}, // quality 5
105 
106  { 0, 0}, { 8, 0}, { 0, 8}, { 8, 8}, { 4, 0}, {12, 0}, { 4, 8}, {12, 8},
107  { 1, 1}, { 9, 1}, { 1, 9}, { 9, 9}, { 5, 1}, {13, 1}, { 5, 9}, {13, 9},
108  { 3, 2}, {11, 2}, { 3,10}, {11,10}, { 7, 2}, {15, 2}, { 7,10}, {15,10},
109  { 2, 3}, {10, 3}, { 2,11}, {10,11}, { 6, 3}, {14, 3}, { 6,11}, {14,11},
110  { 0, 4}, { 8, 4}, { 0,12}, { 8,12}, { 4, 4}, {12, 4}, { 4,12}, {12,12},
111  { 1, 5}, { 9, 5}, { 1,13}, { 9,13}, { 5, 5}, {13, 5}, { 5,13}, {13,13},
112  { 3, 6}, {11, 6}, { 3,14}, {11,14}, { 7, 6}, {15, 6}, { 7,14}, {15,14},
113  { 2, 7}, {10, 7}, { 2,15}, {10,15}, { 6, 7}, {14, 7}, { 6,15}, {14,15}, // quality 6
114 
115  { 0, 0}, { 8, 0}, { 0, 8}, { 8, 8}, { 0, 2}, { 8, 2}, { 0,10}, { 8,10},
116  { 0, 4}, { 8, 4}, { 0,12}, { 8,12}, { 0, 6}, { 8, 6}, { 0,14}, { 8,14},
117  { 1, 1}, { 9, 1}, { 1, 9}, { 9, 9}, { 1, 3}, { 9, 3}, { 1,11}, { 9,11},
118  { 1, 5}, { 9, 5}, { 1,13}, { 9,13}, { 1, 7}, { 9, 7}, { 1,15}, { 9,15},
119  { 2, 0}, {10, 0}, { 2, 8}, {10, 8}, { 2, 2}, {10, 2}, { 2,10}, {10,10},
120  { 2, 4}, {10, 4}, { 2,12}, {10,12}, { 2, 6}, {10, 6}, { 2,14}, {10,14},
121  { 3, 1}, {11, 1}, { 3, 9}, {11, 9}, { 3, 3}, {11, 3}, { 3,11}, {11,11},
122  { 3, 5}, {11, 5}, { 3,13}, {11,13}, { 3, 7}, {11, 7}, { 3,15}, {11,15},
123  { 4, 0}, {12, 0}, { 4, 8}, {12, 8}, { 4, 2}, {12, 2}, { 4,10}, {12,10},
124  { 4, 4}, {12, 4}, { 4,12}, {12,12}, { 4, 6}, {12, 6}, { 4,14}, {12,14},
125  { 5, 1}, {13, 1}, { 5, 9}, {13, 9}, { 5, 3}, {13, 3}, { 5,11}, {13,11},
126  { 5, 5}, {13, 5}, { 5,13}, {13,13}, { 5, 7}, {13, 7}, { 5,15}, {13,15},
127  { 6, 0}, {14, 0}, { 6, 8}, {14, 8}, { 6, 2}, {14, 2}, { 6,10}, {14,10},
128  { 6, 4}, {14, 4}, { 6,12}, {14,12}, { 6, 6}, {14, 6}, { 6,14}, {14,14},
129  { 7, 1}, {15, 1}, { 7, 9}, {15, 9}, { 7, 3}, {15, 3}, { 7,11}, {15,11},
130  { 7, 5}, {15, 5}, { 7,13}, {15,13}, { 7, 7}, {15, 7}, { 7,15}, {15,15}, // quality 7
131 
132  { 0, 0}, { 8, 0}, { 0, 8}, { 8, 8}, { 4, 4}, {12, 4}, { 4,12}, {12,12},
133  { 0, 4}, { 8, 4}, { 0,12}, { 8,12}, { 4, 0}, {12, 0}, { 4, 8}, {12, 8},
134  { 2, 2}, {10, 2}, { 2,10}, {10,10}, { 6, 6}, {14, 6}, { 6,14}, {14,14},
135  { 2, 6}, {10, 6}, { 2,14}, {10,14}, { 6, 2}, {14, 2}, { 6,10}, {14,10},
136  { 0, 2}, { 8, 2}, { 0,10}, { 8,10}, { 4, 6}, {12, 6}, { 4,14}, {12,14},
137  { 0, 6}, { 8, 6}, { 0,14}, { 8,14}, { 4, 2}, {12, 2}, { 4,10}, {12,10},
138  { 2, 0}, {10, 0}, { 2, 8}, {10, 8}, { 6, 4}, {14, 4}, { 6,12}, {14,12},
139  { 2, 4}, {10, 4}, { 2,12}, {10,12}, { 6, 0}, {14, 0}, { 6, 8}, {14, 8},
140  { 1, 1}, { 9, 1}, { 1, 9}, { 9, 9}, { 5, 5}, {13, 5}, { 5,13}, {13,13},
141  { 1, 5}, { 9, 5}, { 1,13}, { 9,13}, { 5, 1}, {13, 1}, { 5, 9}, {13, 9},
142  { 3, 3}, {11, 3}, { 3,11}, {11,11}, { 7, 7}, {15, 7}, { 7,15}, {15,15},
143  { 3, 7}, {11, 7}, { 3,15}, {11,15}, { 7, 3}, {15, 3}, { 7,11}, {15,11},
144  { 1, 3}, { 9, 3}, { 1,11}, { 9,11}, { 5, 7}, {13, 7}, { 5,15}, {13,15},
145  { 1, 7}, { 9, 7}, { 1,15}, { 9,15}, { 5, 3}, {13, 3}, { 5,11}, {13,11}, // quality 8
146  { 3, 1}, {11, 1}, { 3, 9}, {11, 9}, { 7, 5}, {15, 5}, { 7,13}, {15,13},
147  { 3, 5}, {11, 5}, { 3,13}, {11,13}, { 7, 1}, {15, 1}, { 7, 9}, {15, 9},
148  { 0, 1}, { 8, 1}, { 0, 9}, { 8, 9}, { 4, 5}, {12, 5}, { 4,13}, {12,13},
149  { 0, 5}, { 8, 5}, { 0,13}, { 8,13}, { 4, 1}, {12, 1}, { 4, 9}, {12, 9},
150  { 2, 3}, {10, 3}, { 2,11}, {10,11}, { 6, 7}, {14, 7}, { 6,15}, {14,15},
151  { 2, 7}, {10, 7}, { 2,15}, {10,15}, { 6, 3}, {14, 3}, { 6,11}, {14,11},
152  { 0, 3}, { 8, 3}, { 0,11}, { 8,11}, { 4, 7}, {12, 7}, { 4,15}, {12,15},
153  { 0, 7}, { 8, 7}, { 0,15}, { 8,15}, { 4, 3}, {12, 3}, { 4,11}, {12,11},
154  { 2, 1}, {10, 1}, { 2, 9}, {10, 9}, { 6, 5}, {14, 5}, { 6,13}, {14,13},
155  { 2, 5}, {10, 5}, { 2,13}, {10,13}, { 6, 1}, {14, 1}, { 6, 9}, {14, 9},
156  { 1, 0}, { 9, 0}, { 1, 8}, { 9, 8}, { 5, 4}, {13, 4}, { 5,12}, {13,12},
157  { 1, 4}, { 9, 4}, { 1,12}, { 9,12}, { 5, 0}, {13, 0}, { 5, 8}, {13, 8},
158  { 3, 2}, {11, 2}, { 3,10}, {11,10}, { 7, 6}, {15, 6}, { 7,14}, {15,14},
159  { 3, 6}, {11, 6}, { 3,14}, {11,14}, { 7, 2}, {15, 2}, { 7,10}, {15,10},
160  { 1, 2}, { 9, 2}, { 1,10}, { 9,10}, { 5, 6}, {13, 6}, { 5,14}, {13,14},
161  { 1, 6}, { 9, 6}, { 1,14}, { 9,14}, { 5, 2}, {13, 2}, { 5,10}, {13,10},
162  { 3, 0}, {11, 0}, { 3, 8}, {11, 8}, { 7, 4}, {15, 4}, { 7,12}, {15,12},
163  { 3, 4}, {11, 4}, { 3,12}, {11,12}, { 7, 0}, {15, 0}, { 7, 8}, {15, 8},
164 };
165 
166 static void store_slice_c(uint8_t *dst, const uint16_t *src,
167  int dst_stride, int src_stride,
168  int width, int height, int log2_scale)
169 {
170  int y, x;
171 
172 #define STORE(pos) do { \
173  temp = ((src[x + y * src_stride + pos] << log2_scale) + d[pos]) >> 8; \
174  if (temp & 0x100) temp = ~(temp >> 31); \
175  dst[x + y * dst_stride + pos] = temp; \
176 } while (0)
177 
178  for (y = 0; y < height; y++) {
179  const uint8_t *d = dither[y&7];
180  for (x = 0; x < width; x += 8) {
181  int temp;
182  STORE(0);
183  STORE(1);
184  STORE(2);
185  STORE(3);
186  STORE(4);
187  STORE(5);
188  STORE(6);
189  STORE(7);
190  }
191  }
192 }
193 
194 static int filter_1phase(AVFilterContext *ctx, void *arg, int i, int nb_jobs)
195 {
196  USPPContext *p = ctx->priv;
197  int ret, x, y;
198  int width = ctx->inputs[0]->w;
199  int height = ctx->inputs[0]->h;
200 
201  const int x1 = offset[i+nb_jobs-1][0];
202  const int y1 = offset[i+nb_jobs-1][1];
203  const int x1c = x1 >> p->hsub;
204  const int y1c = y1 >> p->vsub;
205  const int BLOCKc = BLOCK >> p->hsub;
206  int offset;
207  AVPacket *pkt = p->pkt[i];
208 
209  av_packet_unref(pkt);
210  pkt->data = p->outbuf;
211  pkt->size = p->outbuf_size;
212 
213  p->frame[i]->linesize[0] = p->temp_stride[0];
214  p->frame[i]->linesize[1] = p->temp_stride[1];
215  p->frame[i]->linesize[2] = p->temp_stride[2];
216  p->frame[i]->height = height + BLOCK;
217  p->frame[i]->width = width + BLOCK;
218  p->frame[i]->data[0] = p->src[0] + x1 + y1 * p->frame[i]->linesize[0];
219  p->frame[i]->data[1] = p->src[1] + x1c + y1c * p->frame[i]->linesize[1];
220  p->frame[i]->data[2] = p->src[2] + x1c + y1c * p->frame[i]->linesize[2];
221  p->frame[i]->format = p->avctx_enc[i]->pix_fmt;
222  p->frame[i]->quality = p->quality;
223 
224  ret = avcodec_send_frame(p->avctx_enc[i], p->frame[i]);
225  if (ret < 0) {
226  av_log(p->avctx_enc[i], AV_LOG_ERROR, "Error sending a frame for encoding\n");
227  return ret;
228  }
229  ret = avcodec_receive_packet(p->avctx_enc[i], pkt);
230  if (ret < 0) {
231  av_log(p->avctx_enc[i], AV_LOG_ERROR, "Error receiving a packet from encoding\n");
232  return ret;
233  }
234 
235  if (p->avctx_enc[i]->flags & AV_CODEC_FLAG_RECON_FRAME) {
236  av_packet_unref(pkt);
237  ret = avcodec_receive_frame(p->avctx_enc[i], p->frame_dec[i]);
238  if (ret < 0) {
239  av_log(p->avctx_dec[i], AV_LOG_ERROR, "Error receiving a frame from encoding\n");
240  return ret;
241  }
242  } else {
243  ret = avcodec_send_packet(p->avctx_dec[i], pkt);
244  av_packet_unref(pkt);
245  if (ret < 0) {
246  av_log(p->avctx_dec[i], AV_LOG_ERROR, "Error sending a packet for decoding\n");
247  return ret;
248  }
249  ret = avcodec_receive_frame(p->avctx_dec[i], p->frame_dec[i]);
250  if (ret < 0) {
251  av_log(p->avctx_dec[i], AV_LOG_ERROR, "Error receiving a frame from decoding\n");
252  return ret;
253  }
254  }
255 
256  offset = (BLOCK-x1) + (BLOCK-y1) * p->frame_dec[i]->linesize[0];
257 
258  for (y = 0; y < height; y++)
259  for (x = 0; x < width; x++)
260  p->temp[0][x + y * p->temp_stride[0]] += p->frame_dec[i]->data[0][x + y * p->frame_dec[i]->linesize[0] + offset];
261 
262 
263  if (!p->frame_dec[i]->data[2] || !p->temp[2])
264  return 0;
265 
266  offset = (BLOCKc-x1c) + (BLOCKc-y1c) * p->frame_dec[i]->linesize[1];
267 
268  for (y = 0; y < AV_CEIL_RSHIFT(height, p->vsub); y++) {
269  for (x = 0; x < AV_CEIL_RSHIFT(width, p->hsub); x++) {
270  p->temp[1][x + y * p->temp_stride[1]] += p->frame_dec[i]->data[1][x + y * p->frame_dec[i]->linesize[1] + offset];
271  p->temp[2][x + y * p->temp_stride[2]] += p->frame_dec[i]->data[2][x + y * p->frame_dec[i]->linesize[2] + offset];
272  }
273  }
274 
275  return 0;
276 }
277 
278 static void filter(AVFilterContext *ctx, uint8_t *dst[3], uint8_t *src[3],
279  int dst_stride[3], int src_stride[3], int width,
280  int height, uint8_t *qp_store, int qp_stride)
281 {
282  USPPContext *p = ctx->priv;
283  int x, y, i, j;
284 
285  for (i = 0; i < 3; i++) {
286  int is_chroma = !!i;
287  int w = AV_CEIL_RSHIFT(width, is_chroma ? p->hsub : 0);
288  int h = AV_CEIL_RSHIFT(height, is_chroma ? p->vsub : 0);
289  int stride = p->temp_stride[i];
290  int block = BLOCK >> (is_chroma ? p->hsub : 0);
291 
292  if (!src[i] || !dst[i])
293  continue;
294  for (y = 0; y < h; y++) {
295  int index = block + block * stride + y * stride;
296 
297  memcpy(p->src[i] + index, src[i] + y * src_stride[i], w );
298  for (x = 0; x < block; x++) {
299  p->src[i][index - x - 1] = p->src[i][index + x ];
300  p->src[i][index + w + x ] = p->src[i][index + w - x - 1];
301  }
302  }
303  for (y = 0; y < block; y++) {
304  memcpy(p->src[i] + ( block-1-y) * stride, p->src[i] + ( y+block ) * stride, stride);
305  memcpy(p->src[i] + (h+block +y) * stride, p->src[i] + (h-y+block-1) * stride, stride);
306  }
307 
308  memset(p->temp[i], 0, (h + 2 * block) * stride * sizeof(int16_t));
309  }
310 
311  if (p->qp)
312  p->quality = p->qp * FF_QP2LAMBDA;
313  else {
314  int qpsum=0;
315  int qpcount = (height>>4) * (height>>4);
316 
317  for (y = 0; y < (height>>4); y++) {
318  for (x = 0; x < (width>>4); x++)
319  qpsum += qp_store[x + y * qp_stride];
320  }
321  p->quality = ff_norm_qscale((qpsum + qpcount/2) / qpcount, p->qscale_type) * FF_QP2LAMBDA;
322  }
323 // init per MB qscale stuff FIXME
324 
325  ff_filter_execute(ctx, filter_1phase, NULL, NULL, p->count);
326 
327  for (j = 0; j < 3; j++) {
328  int is_chroma = !!j;
329  if (!dst[j])
330  continue;
331  store_slice_c(dst[j], p->temp[j], dst_stride[j], p->temp_stride[j],
332  AV_CEIL_RSHIFT(width, is_chroma ? p->hsub : 0),
333  AV_CEIL_RSHIFT(height, is_chroma ? p->vsub : 0),
334  8-p->log2_count);
335  }
336 }
337 
338 static const enum AVPixelFormat pix_fmts[] = {
339  AV_PIX_FMT_YUV444P,
340  AV_PIX_FMT_YUV420P,
341  AV_PIX_FMT_YUV410P,
342  AV_PIX_FMT_YUVJ444P,
343  AV_PIX_FMT_YUVJ420P,
344  AV_PIX_FMT_GRAY8,
345  AV_PIX_FMT_NONE
346 };
347 
348 static int config_input(AVFilterLink *inlink)
349 {
350 
351  AVFilterContext *ctx = inlink->dst;
352  USPPContext *uspp = ctx->priv;
353  const int height = inlink->h;
354  const int width = inlink->w;
355  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
356  int i;
357  const AVCodec *enc = avcodec_find_encoder_by_name(uspp->codec_name);
358  const AVCodec *dec = avcodec_find_decoder_by_name(uspp->codec_name);
359  if (!enc) {
360  av_log(ctx, AV_LOG_ERROR, "encoder %s not found.\n", uspp->codec_name);
361  return AVERROR(EINVAL);
362  }
363  if (!dec) {
364  av_log(ctx, AV_LOG_ERROR, "decoder %s not found.\n", uspp->codec_name);
365  return AVERROR(EINVAL);
366  }
367 
368  uspp->hsub = desc->log2_chroma_w;
369  uspp->vsub = desc->log2_chroma_h;
370  uspp->count = 1<<uspp->log2_count;
371 
372  for (i = 0; i < 3; i++) {
373  int is_chroma = !!i;
374  int w = (width + 4 * BLOCK-1) & (~(2 * BLOCK-1));
375  int h = (height + 4 * BLOCK-1) & (~(2 * BLOCK-1));
376 
377  if (is_chroma) {
378  w = AV_CEIL_RSHIFT(w, uspp->hsub);
379  h = AV_CEIL_RSHIFT(h, uspp->vsub);
380  }
381 
382  uspp->temp_stride[i] = w;
383  if (!(uspp->temp[i] = av_malloc_array(uspp->temp_stride[i], h * sizeof(int16_t))))
384  return AVERROR(ENOMEM);
385  if (!(uspp->src [i] = av_malloc_array(uspp->temp_stride[i], h * sizeof(uint8_t))))
386  return AVERROR(ENOMEM);
387  }
388 
389  for (i = 0; i < uspp->count; i++) {
390  AVCodecContext *avctx_enc, *avctx_dec;
391  AVDictionary *opts = NULL;
392  int ret;
393 
394  if (!(uspp->avctx_enc[i] = avcodec_alloc_context3(NULL)))
395  return AVERROR(ENOMEM);
396 
397  avctx_enc = uspp->avctx_enc[i];
398  avctx_enc->width = width + BLOCK;
399  avctx_enc->height = height + BLOCK;
400  avctx_enc->time_base = (AVRational){1,25}; // meaningless
401  avctx_enc->gop_size = INT_MAX;
402  avctx_enc->max_b_frames = 0;
403  avctx_enc->pix_fmt = inlink->format;
404  avctx_enc->flags = AV_CODEC_FLAG_QSCALE | AV_CODEC_FLAG_LOW_DELAY;
405  if (enc->capabilities & AV_CODEC_CAP_ENCODER_RECON_FRAME) {
406  avctx_enc->flags |= AV_CODEC_FLAG_RECON_FRAME;
407  av_dict_set(&opts, "no_bitstream", "1", 0);
408  }
409  avctx_enc->strict_std_compliance = FF_COMPLIANCE_EXPERIMENTAL;
410  avctx_enc->global_quality = 123;
411  avctx_enc->thread_count = 1; // We do threading in the filter with muiltiple codecs
412  ret = avcodec_open2(avctx_enc, enc, &opts);
413  av_dict_free(&opts);
414  if (ret < 0)
415  return ret;
416  av_assert0(avctx_enc->codec);
417 
418 
419  if (!(enc->capabilities & AV_CODEC_CAP_ENCODER_RECON_FRAME)) {
420  if (!(uspp->avctx_dec[i] = avcodec_alloc_context3(NULL)))
421  return AVERROR(ENOMEM);
422  avctx_dec = uspp->avctx_dec[i];
423  avctx_dec->width = avctx_enc->width;
424  avctx_dec->height = avctx_enc->height;
425  avctx_dec->thread_count = 1;
426  ret = avcodec_open2(avctx_dec, dec, NULL);
427  if (ret < 0)
428  return ret;
429  }
430 
431  if (!(uspp->frame[i] = av_frame_alloc()))
432  return AVERROR(ENOMEM);
433  if (!(uspp->frame_dec[i] = av_frame_alloc()))
434  return AVERROR(ENOMEM);
435  if (!(uspp->pkt[i] = av_packet_alloc()))
436  return AVERROR(ENOMEM);
437  }
438 
439  uspp->outbuf_size = (width + BLOCK) * (height + BLOCK) * 10;
440  if (!(uspp->outbuf = av_malloc(uspp->outbuf_size)))
441  return AVERROR(ENOMEM);
442 
443  return 0;
444 }
445 
446 static int filter_frame(AVFilterLink *inlink, AVFrame *in)
447 {
448  AVFilterContext *ctx = inlink->dst;
449  USPPContext *uspp = ctx->priv;
450  AVFilterLink *outlink = ctx->outputs[0];
451  AVFrame *out = in;
452 
453  int qp_stride = 0;
454  int8_t *qp_table = NULL;
455  int ret = 0;
456 
457  /* if we are not in a constant user quantizer mode and we don't want to use
458  * the quantizers from the B-frames (B-frames often have a higher QP), we
459  * need to save the qp table from the last non B-frame; this is what the
460  * following code block does */
461  if (!uspp->qp && (uspp->use_bframe_qp || in->pict_type != AV_PICTURE_TYPE_B)) {
462  ret = ff_qp_table_extract(in, &qp_table, &qp_stride, NULL, &uspp->qscale_type);
463  if (ret < 0) {
464  av_frame_free(&in);
465  return ret;
466  }
467 
468  if (!uspp->use_bframe_qp && in->pict_type != AV_PICTURE_TYPE_B) {
469  av_freep(&uspp->non_b_qp_table);
470  uspp->non_b_qp_table = qp_table;
471  uspp->non_b_qp_stride = qp_stride;
472  }
473  }
474 
475  if (uspp->log2_count && !ctx->is_disabled) {
476  if (!uspp->use_bframe_qp && uspp->non_b_qp_table) {
477  qp_table = uspp->non_b_qp_table;
478  qp_stride = uspp->non_b_qp_stride;
479  }
480 
481  if (qp_table || uspp->qp) {
482 
483  /* get a new frame if in-place is not possible or if the dimensions
484  * are not multiple of 8 */
485  if (!av_frame_is_writable(in) || (inlink->w & 7) || (inlink->h & 7)) {
486  const int aligned_w = FFALIGN(inlink->w, 8);
487  const int aligned_h = FFALIGN(inlink->h, 8);
488 
489  out = ff_get_video_buffer(outlink, aligned_w, aligned_h);
490  if (!out) {
491  av_frame_free(&in);
492  if (qp_table != uspp->non_b_qp_table)
493  av_free(qp_table);
494  return AVERROR(ENOMEM);
495  }
496  av_frame_copy_props(out, in);
497  out->width = in->width;
498  out->height = in->height;
499  }
500 
501  filter(ctx, out->data, in->data, out->linesize, in->linesize,
502  inlink->w, inlink->h, qp_table, qp_stride);
503  }
504  }
505 
506  if (in != out) {
507  if (in->data[3])
508  av_image_copy_plane(out->data[3], out->linesize[3],
509  in ->data[3], in ->linesize[3],
510  inlink->w, inlink->h);
511  av_frame_free(&in);
512  }
513  ret = ff_filter_frame(outlink, out);
514  if (qp_table != uspp->non_b_qp_table)
515  av_freep(&qp_table);
516  return ret;
517 }
518 
519 static av_cold void uninit(AVFilterContext *ctx)
520 {
521  USPPContext *uspp = ctx->priv;
522  int i;
523 
524  for (i = 0; i < 3; i++) {
525  av_freep(&uspp->temp[i]);
526  av_freep(&uspp->src[i]);
527  }
528 
529  for (i = 0; i < uspp->count; i++) {
530  avcodec_free_context(&uspp->avctx_enc[i]);
531  avcodec_free_context(&uspp->avctx_dec[i]);
532  av_frame_free(&uspp->frame[i]);
533  av_frame_free(&uspp->frame_dec[i]);
534  av_packet_free(&uspp->pkt[i]);
535  }
536 
537  av_freep(&uspp->non_b_qp_table);
538  av_freep(&uspp->outbuf);
539 }
540 
541 static const AVFilterPad uspp_inputs[] = {
542  {
543  .name = "default",
544  .type = AVMEDIA_TYPE_VIDEO,
545  .config_props = config_input,
546  .filter_frame = filter_frame,
547  },
548 };
549 
550 const AVFilter ff_vf_uspp = {
551  .name = "uspp",
552  .description = NULL_IF_CONFIG_SMALL("Apply Ultra Simple / Slow Post-processing filter."),
553  .priv_size = sizeof(USPPContext),
554  .uninit = uninit,
555  FILTER_INPUTS(uspp_inputs),
556  FILTER_OUTPUTS(ff_video_default_filterpad),
557  FILTER_PIXFMTS_ARRAY(pix_fmts),
558  .priv_class = &uspp_class,
559  .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL | AVFILTER_FLAG_SLICE_THREADS,
560 };
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:519
USPPContext::src
uint8_t * src[3]
Definition: vf_uspp.c:54
USPPContext::qp
int qp
Definition: vf_uspp.c:50
av_packet_unref
void av_packet_unref(AVPacket *pkt)
Wipe the packet.
Definition: avpacket.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:446
USPPContext::avctx_enc
AVCodecContext * avctx_enc[BLOCK *BLOCK]
Definition: vf_uspp.c:58
qp_table.h
avcodec_receive_packet
int avcodec_receive_packet(AVCodecContext *avctx, AVPacket *avpkt)
Read encoded data from the encoder.
Definition: encode.c:540
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:54
ff_filter_frame
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1018
av_pix_fmt_desc_get
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2962
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:55
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:130
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:344
pixdesc.h
AVFrame::width
int width
Definition: frame.h:416
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:522
AVOption
AVOption.
Definition: opt.h:346
BLOCK
#define BLOCK
Definition: vf_uspp.c:43
USPPContext::frame
AVFrame * frame[BLOCK *BLOCK]
Definition: vf_uspp.c:61
offset
static const uint8_t offset[511][2]
Definition: vf_uspp.c:92
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:348
AVFilter::name
const char * name
Filter name.
Definition: avfilter.h:170
USPPContext::codec_name
char * codec_name
Definition: vf_uspp.c:51
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:49
av_packet_free
void av_packet_free(AVPacket **pkt)
Free the packet, if the packet is reference counted, it will be unreferenced first.
Definition: avpacket.c:74
AVFrame::data
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:365
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:65
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:59
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:118
avassert.h
pkt
AVPacket * pkt
Definition: movenc.c:59
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:166
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:58
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:681
av_assert0
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:40
ctx
AVFormatContext * ctx
Definition: movenc.c:48
USPPContext::non_b_qp_stride
int non_b_qp_stride
Definition: vf_uspp.c:64
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:50
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:999
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:679
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:47
USPPContext::quality
int quality
Definition: vf_uspp.c:66
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:128
dither
static const uint8_t dither[8][8]
Definition: vf_uspp.c:81
USPPContext::frame_dec
AVFrame * frame_dec[BLOCK *BLOCK]
Definition: vf_uspp.c:62
AV_PIX_FMT_GRAY8
@ AV_PIX_FMT_GRAY8
Y , 8bpp.
Definition: pixfmt.h:81
index
int index
Definition: gxfenc.c:89
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:57
AVFrame::pict_type
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:446
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:278
AVPacket::size
int size
Definition: packet.h:523
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:106
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:46
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:476
av_frame_is_writable
int av_frame_is_writable(AVFrame *frame)
Check if the frame data is writable.
Definition: frame.c:615
AVFrame::format
int format
format of the frame, -1 if unknown or unset Values correspond to enum AVPixelFormat for video frames,...
Definition: frame.h:431
height
#define height
av_packet_alloc
AVPacket * av_packet_alloc(void)
Allocate an AVPacket and set its fields to default values.
Definition: avpacket.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:48
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:675
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:255
MAX_LEVEL
#define MAX_LEVEL
Definition: vf_uspp.c:42
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:507
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:60
avcodec.h
USPPContext
Definition: vf_uspp.c:45
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:338
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:71
AVCodecContext
main external API structure.
Definition: avcodec.h:445
AVFrame::height
int height
Definition: frame.h:416
uspp_inputs
static const AVFilterPad uspp_inputs[]
Definition: vf_uspp.c:541
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:63
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:194
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:70
USPPContext::qscale_type
enum AVVideoEncParamsType qscale_type
Definition: vf_uspp.c:52
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:499
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:409
USPPContext::outbuf_size
int outbuf_size
Definition: vf_uspp.c:56
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:389
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:69
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:550
video_enc_params.h
USPPContext::hsub
int hsub
Definition: vf_uspp.c:49
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:994
USPPContext::temp_stride
int temp_stride[3]
Definition: vf_uspp.c:53
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