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 "libavcodec/avcodec.h"
36 #include "internal.h"
37 #include "qp_table.h"
38 #include "avfilter.h"
39 
40 #define MAX_LEVEL 8 /* quality levels */
41 #define BLOCK 16
42 
43 typedef struct USPPContext {
44  const AVClass *av_class;
45  int log2_count;
46  int hsub, vsub;
47  int qp;
48  int qscale_type;
49  int temp_stride[3];
50  uint8_t *src[3];
51  uint16_t *temp[3];
52  int outbuf_size;
53  uint8_t *outbuf;
54  AVCodecContext *avctx_enc[BLOCK*BLOCK];
55  AVPacket *pkt;
56  AVFrame *frame;
57  AVFrame *frame_dec;
58  int8_t *non_b_qp_table;
59  int non_b_qp_stride;
60  int use_bframe_qp;
61 } USPPContext;
62 
63 #define OFFSET(x) offsetof(USPPContext, x)
64 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
65 static const AVOption uspp_options[] = {
66  { "quality", "set quality", OFFSET(log2_count), AV_OPT_TYPE_INT, {.i64 = 3}, 0, MAX_LEVEL, FLAGS },
67  { "qp", "force a constant quantizer parameter", OFFSET(qp), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 63, FLAGS },
68  { "use_bframe_qp", "use B-frames' QP", OFFSET(use_bframe_qp), AV_OPT_TYPE_BOOL,{.i64 = 0}, 0, 1, FLAGS },
69  { NULL }
70 };
71 
72 AVFILTER_DEFINE_CLASS(uspp);
73 
74 DECLARE_ALIGNED(8, static const uint8_t, dither)[8][8] = {
75  { 0*4, 48*4, 12*4, 60*4, 3*4, 51*4, 15*4, 63*4, },
76  { 32*4, 16*4, 44*4, 28*4, 35*4, 19*4, 47*4, 31*4, },
77  { 8*4, 56*4, 4*4, 52*4, 11*4, 59*4, 7*4, 55*4, },
78  { 40*4, 24*4, 36*4, 20*4, 43*4, 27*4, 39*4, 23*4, },
79  { 2*4, 50*4, 14*4, 62*4, 1*4, 49*4, 13*4, 61*4, },
80  { 34*4, 18*4, 46*4, 30*4, 33*4, 17*4, 45*4, 29*4, },
81  { 10*4, 58*4, 6*4, 54*4, 9*4, 57*4, 5*4, 53*4, },
82  { 42*4, 26*4, 38*4, 22*4, 41*4, 25*4, 37*4, 21*4, },
83 };
84 
85 static const uint8_t offset[511][2] = {
86  { 0, 0},
87  { 0, 0}, { 8, 8}, // quality 1
88  { 0, 0}, { 4, 4}, {12, 8}, { 8,12}, // quality 2
89  { 0, 0}, {10, 2}, { 4, 4}, {14, 6}, { 8, 8}, { 2,10}, {12,12}, { 6,14}, // quality 3
90 
91  { 0, 0}, {10, 2}, { 4, 4}, {14, 6}, { 8, 8}, { 2,10}, {12,12}, { 6,14},
92  { 5, 1}, {15, 3}, { 9, 5}, { 3, 7}, {13, 9}, { 7,11}, { 1,13}, {11,15}, // quality 4
93 
94  { 0, 0}, { 8, 0}, { 0, 8}, { 8, 8}, { 5, 1}, {13, 1}, { 5, 9}, {13, 9},
95  { 2, 2}, {10, 2}, { 2,10}, {10,10}, { 7, 3}, {15, 3}, { 7,11}, {15,11},
96  { 4, 4}, {12, 4}, { 4,12}, {12,12}, { 1, 5}, { 9, 5}, { 1,13}, { 9,13},
97  { 6, 6}, {14, 6}, { 6,14}, {14,14}, { 3, 7}, {11, 7}, { 3,15}, {11,15}, // quality 5
98 
99  { 0, 0}, { 8, 0}, { 0, 8}, { 8, 8}, { 4, 0}, {12, 0}, { 4, 8}, {12, 8},
100  { 1, 1}, { 9, 1}, { 1, 9}, { 9, 9}, { 5, 1}, {13, 1}, { 5, 9}, {13, 9},
101  { 3, 2}, {11, 2}, { 3,10}, {11,10}, { 7, 2}, {15, 2}, { 7,10}, {15,10},
102  { 2, 3}, {10, 3}, { 2,11}, {10,11}, { 6, 3}, {14, 3}, { 6,11}, {14,11},
103  { 0, 4}, { 8, 4}, { 0,12}, { 8,12}, { 4, 4}, {12, 4}, { 4,12}, {12,12},
104  { 1, 5}, { 9, 5}, { 1,13}, { 9,13}, { 5, 5}, {13, 5}, { 5,13}, {13,13},
105  { 3, 6}, {11, 6}, { 3,14}, {11,14}, { 7, 6}, {15, 6}, { 7,14}, {15,14},
106  { 2, 7}, {10, 7}, { 2,15}, {10,15}, { 6, 7}, {14, 7}, { 6,15}, {14,15}, // quality 6
107 
108  { 0, 0}, { 8, 0}, { 0, 8}, { 8, 8}, { 0, 2}, { 8, 2}, { 0,10}, { 8,10},
109  { 0, 4}, { 8, 4}, { 0,12}, { 8,12}, { 0, 6}, { 8, 6}, { 0,14}, { 8,14},
110  { 1, 1}, { 9, 1}, { 1, 9}, { 9, 9}, { 1, 3}, { 9, 3}, { 1,11}, { 9,11},
111  { 1, 5}, { 9, 5}, { 1,13}, { 9,13}, { 1, 7}, { 9, 7}, { 1,15}, { 9,15},
112  { 2, 0}, {10, 0}, { 2, 8}, {10, 8}, { 2, 2}, {10, 2}, { 2,10}, {10,10},
113  { 2, 4}, {10, 4}, { 2,12}, {10,12}, { 2, 6}, {10, 6}, { 2,14}, {10,14},
114  { 3, 1}, {11, 1}, { 3, 9}, {11, 9}, { 3, 3}, {11, 3}, { 3,11}, {11,11},
115  { 3, 5}, {11, 5}, { 3,13}, {11,13}, { 3, 7}, {11, 7}, { 3,15}, {11,15},
116  { 4, 0}, {12, 0}, { 4, 8}, {12, 8}, { 4, 2}, {12, 2}, { 4,10}, {12,10},
117  { 4, 4}, {12, 4}, { 4,12}, {12,12}, { 4, 6}, {12, 6}, { 4,14}, {12,14},
118  { 5, 1}, {13, 1}, { 5, 9}, {13, 9}, { 5, 3}, {13, 3}, { 5,11}, {13,11},
119  { 5, 5}, {13, 5}, { 5,13}, {13,13}, { 5, 7}, {13, 7}, { 5,15}, {13,15},
120  { 6, 0}, {14, 0}, { 6, 8}, {14, 8}, { 6, 2}, {14, 2}, { 6,10}, {14,10},
121  { 6, 4}, {14, 4}, { 6,12}, {14,12}, { 6, 6}, {14, 6}, { 6,14}, {14,14},
122  { 7, 1}, {15, 1}, { 7, 9}, {15, 9}, { 7, 3}, {15, 3}, { 7,11}, {15,11},
123  { 7, 5}, {15, 5}, { 7,13}, {15,13}, { 7, 7}, {15, 7}, { 7,15}, {15,15}, // quality 7
124 
125  { 0, 0}, { 8, 0}, { 0, 8}, { 8, 8}, { 4, 4}, {12, 4}, { 4,12}, {12,12},
126  { 0, 4}, { 8, 4}, { 0,12}, { 8,12}, { 4, 0}, {12, 0}, { 4, 8}, {12, 8},
127  { 2, 2}, {10, 2}, { 2,10}, {10,10}, { 6, 6}, {14, 6}, { 6,14}, {14,14},
128  { 2, 6}, {10, 6}, { 2,14}, {10,14}, { 6, 2}, {14, 2}, { 6,10}, {14,10},
129  { 0, 2}, { 8, 2}, { 0,10}, { 8,10}, { 4, 6}, {12, 6}, { 4,14}, {12,14},
130  { 0, 6}, { 8, 6}, { 0,14}, { 8,14}, { 4, 2}, {12, 2}, { 4,10}, {12,10},
131  { 2, 0}, {10, 0}, { 2, 8}, {10, 8}, { 6, 4}, {14, 4}, { 6,12}, {14,12},
132  { 2, 4}, {10, 4}, { 2,12}, {10,12}, { 6, 0}, {14, 0}, { 6, 8}, {14, 8},
133  { 1, 1}, { 9, 1}, { 1, 9}, { 9, 9}, { 5, 5}, {13, 5}, { 5,13}, {13,13},
134  { 1, 5}, { 9, 5}, { 1,13}, { 9,13}, { 5, 1}, {13, 1}, { 5, 9}, {13, 9},
135  { 3, 3}, {11, 3}, { 3,11}, {11,11}, { 7, 7}, {15, 7}, { 7,15}, {15,15},
136  { 3, 7}, {11, 7}, { 3,15}, {11,15}, { 7, 3}, {15, 3}, { 7,11}, {15,11},
137  { 1, 3}, { 9, 3}, { 1,11}, { 9,11}, { 5, 7}, {13, 7}, { 5,15}, {13,15},
138  { 1, 7}, { 9, 7}, { 1,15}, { 9,15}, { 5, 3}, {13, 3}, { 5,11}, {13,11}, // quality 8
139  { 3, 1}, {11, 1}, { 3, 9}, {11, 9}, { 7, 5}, {15, 5}, { 7,13}, {15,13},
140  { 3, 5}, {11, 5}, { 3,13}, {11,13}, { 7, 1}, {15, 1}, { 7, 9}, {15, 9},
141  { 0, 1}, { 8, 1}, { 0, 9}, { 8, 9}, { 4, 5}, {12, 5}, { 4,13}, {12,13},
142  { 0, 5}, { 8, 5}, { 0,13}, { 8,13}, { 4, 1}, {12, 1}, { 4, 9}, {12, 9},
143  { 2, 3}, {10, 3}, { 2,11}, {10,11}, { 6, 7}, {14, 7}, { 6,15}, {14,15},
144  { 2, 7}, {10, 7}, { 2,15}, {10,15}, { 6, 3}, {14, 3}, { 6,11}, {14,11},
145  { 0, 3}, { 8, 3}, { 0,11}, { 8,11}, { 4, 7}, {12, 7}, { 4,15}, {12,15},
146  { 0, 7}, { 8, 7}, { 0,15}, { 8,15}, { 4, 3}, {12, 3}, { 4,11}, {12,11},
147  { 2, 1}, {10, 1}, { 2, 9}, {10, 9}, { 6, 5}, {14, 5}, { 6,13}, {14,13},
148  { 2, 5}, {10, 5}, { 2,13}, {10,13}, { 6, 1}, {14, 1}, { 6, 9}, {14, 9},
149  { 1, 0}, { 9, 0}, { 1, 8}, { 9, 8}, { 5, 4}, {13, 4}, { 5,12}, {13,12},
150  { 1, 4}, { 9, 4}, { 1,12}, { 9,12}, { 5, 0}, {13, 0}, { 5, 8}, {13, 8},
151  { 3, 2}, {11, 2}, { 3,10}, {11,10}, { 7, 6}, {15, 6}, { 7,14}, {15,14},
152  { 3, 6}, {11, 6}, { 3,14}, {11,14}, { 7, 2}, {15, 2}, { 7,10}, {15,10},
153  { 1, 2}, { 9, 2}, { 1,10}, { 9,10}, { 5, 6}, {13, 6}, { 5,14}, {13,14},
154  { 1, 6}, { 9, 6}, { 1,14}, { 9,14}, { 5, 2}, {13, 2}, { 5,10}, {13,10},
155  { 3, 0}, {11, 0}, { 3, 8}, {11, 8}, { 7, 4}, {15, 4}, { 7,12}, {15,12},
156  { 3, 4}, {11, 4}, { 3,12}, {11,12}, { 7, 0}, {15, 0}, { 7, 8}, {15, 8},
157 };
158 
159 static void store_slice_c(uint8_t *dst, const uint16_t *src,
160  int dst_stride, int src_stride,
161  int width, int height, int log2_scale)
162 {
163  int y, x;
164 
165 #define STORE(pos) do { \
166  temp = ((src[x + y * src_stride + pos] << log2_scale) + d[pos]) >> 8; \
167  if (temp & 0x100) temp = ~(temp >> 31); \
168  dst[x + y * dst_stride + pos] = temp; \
169 } while (0)
170 
171  for (y = 0; y < height; y++) {
172  const uint8_t *d = dither[y&7];
173  for (x = 0; x < width; x += 8) {
174  int temp;
175  STORE(0);
176  STORE(1);
177  STORE(2);
178  STORE(3);
179  STORE(4);
180  STORE(5);
181  STORE(6);
182  STORE(7);
183  }
184  }
185 }
186 
187 static void filter(USPPContext *p, uint8_t *dst[3], uint8_t *src[3],
188  int dst_stride[3], int src_stride[3], int width,
189  int height, uint8_t *qp_store, int qp_stride)
190 {
191  int x, y, i, j;
192  const int count = 1<<p->log2_count;
193  int ret;
194 
195  for (i = 0; i < 3; i++) {
196  int is_chroma = !!i;
197  int w = AV_CEIL_RSHIFT(width, is_chroma ? p->hsub : 0);
198  int h = AV_CEIL_RSHIFT(height, is_chroma ? p->vsub : 0);
199  int stride = p->temp_stride[i];
200  int block = BLOCK >> (is_chroma ? p->hsub : 0);
201 
202  if (!src[i] || !dst[i])
203  continue;
204  for (y = 0; y < h; y++) {
205  int index = block + block * stride + y * stride;
206 
207  memcpy(p->src[i] + index, src[i] + y * src_stride[i], w );
208  for (x = 0; x < block; x++) {
209  p->src[i][index - x - 1] = p->src[i][index + x ];
210  p->src[i][index + w + x ] = p->src[i][index + w - x - 1];
211  }
212  }
213  for (y = 0; y < block; y++) {
214  memcpy(p->src[i] + ( block-1-y) * stride, p->src[i] + ( y+block ) * stride, stride);
215  memcpy(p->src[i] + (h+block +y) * stride, p->src[i] + (h-y+block-1) * stride, stride);
216  }
217 
218  p->frame->linesize[i] = stride;
219  memset(p->temp[i], 0, (h + 2 * block) * stride * sizeof(int16_t));
220  }
221 
222  if (p->qp)
223  p->frame->quality = p->qp * FF_QP2LAMBDA;
224  else {
225  int qpsum=0;
226  int qpcount = (height>>4) * (height>>4);
227 
228  for (y = 0; y < (height>>4); y++) {
229  for (x = 0; x < (width>>4); x++)
230  qpsum += qp_store[x + y * qp_stride];
231  }
232  p->frame->quality = ff_norm_qscale((qpsum + qpcount/2) / qpcount, p->qscale_type) * FF_QP2LAMBDA;
233  }
234 // init per MB qscale stuff FIXME
235  p->frame->height = height + BLOCK;
236  p->frame->width = width + BLOCK;
237 
238  for (i = 0; i < count; i++) {
239  const int x1 = offset[i+count-1][0];
240  const int y1 = offset[i+count-1][1];
241  const int x1c = x1 >> p->hsub;
242  const int y1c = y1 >> p->vsub;
243  const int BLOCKc = BLOCK >> p->hsub;
244  int offset;
245  AVPacket *pkt = p->pkt;
246  int got_pkt_ptr;
247 
248  av_packet_unref(pkt);
249  pkt->data = p->outbuf;
250  pkt->size = p->outbuf_size;
251 
252  p->frame->data[0] = p->src[0] + x1 + y1 * p->frame->linesize[0];
253  p->frame->data[1] = p->src[1] + x1c + y1c * p->frame->linesize[1];
254  p->frame->data[2] = p->src[2] + x1c + y1c * p->frame->linesize[2];
255  p->frame->format = p->avctx_enc[i]->pix_fmt;
256 
257  ret = avcodec_encode_video2(p->avctx_enc[i], pkt, p->frame, &got_pkt_ptr);
258  if (ret < 0) {
259  av_log(p->avctx_enc[i], AV_LOG_ERROR, "Encoding failed\n");
260  continue;
261  }
262  av_packet_unref(pkt);
263 
264  p->frame_dec = p->avctx_enc[i]->coded_frame;
265 
266  offset = (BLOCK-x1) + (BLOCK-y1) * p->frame_dec->linesize[0];
267 
268  for (y = 0; y < height; y++)
269  for (x = 0; x < width; x++)
270  p->temp[0][x + y * p->temp_stride[0]] += p->frame_dec->data[0][x + y * p->frame_dec->linesize[0] + offset];
271 
272  if (!src[2] || !dst[2])
273  continue;
274 
275  offset = (BLOCKc-x1c) + (BLOCKc-y1c) * p->frame_dec->linesize[1];
276 
277  for (y = 0; y < AV_CEIL_RSHIFT(height, p->vsub); y++) {
278  for (x = 0; x < AV_CEIL_RSHIFT(width, p->hsub); x++) {
279  p->temp[1][x + y * p->temp_stride[1]] += p->frame_dec->data[1][x + y * p->frame_dec->linesize[1] + offset];
280  p->temp[2][x + y * p->temp_stride[2]] += p->frame_dec->data[2][x + y * p->frame_dec->linesize[2] + offset];
281  }
282  }
283  }
284 
285  for (j = 0; j < 3; j++) {
286  int is_chroma = !!j;
287  if (!dst[j])
288  continue;
289  store_slice_c(dst[j], p->temp[j], dst_stride[j], p->temp_stride[j],
290  AV_CEIL_RSHIFT(width, is_chroma ? p->hsub : 0),
291  AV_CEIL_RSHIFT(height, is_chroma ? p->vsub : 0),
292  8-p->log2_count);
293  }
294 }
295 
296 static const enum AVPixelFormat pix_fmts[] = {
297  AV_PIX_FMT_YUV444P,
298  AV_PIX_FMT_YUV420P,
299  AV_PIX_FMT_YUV410P,
300  AV_PIX_FMT_YUVJ444P,
301  AV_PIX_FMT_YUVJ420P,
302  AV_PIX_FMT_GRAY8,
303  AV_PIX_FMT_NONE
304 };
305 
306 static int config_input(AVFilterLink *inlink)
307 {
308 
309  AVFilterContext *ctx = inlink->dst;
310  USPPContext *uspp = ctx->priv;
311  const int height = inlink->h;
312  const int width = inlink->w;
313  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
314  int i;
315 
316  const AVCodec *enc = avcodec_find_encoder(AV_CODEC_ID_SNOW);
317  if (!enc) {
318  av_log(ctx, AV_LOG_ERROR, "SNOW encoder not found.\n");
319  return AVERROR(EINVAL);
320  }
321 
322  uspp->hsub = desc->log2_chroma_w;
323  uspp->vsub = desc->log2_chroma_h;
324 
325  for (i = 0; i < 3; i++) {
326  int is_chroma = !!i;
327  int w = (width + 4 * BLOCK-1) & (~(2 * BLOCK-1));
328  int h = (height + 4 * BLOCK-1) & (~(2 * BLOCK-1));
329 
330  if (is_chroma) {
331  w = AV_CEIL_RSHIFT(w, uspp->hsub);
332  h = AV_CEIL_RSHIFT(h, uspp->vsub);
333  }
334 
335  uspp->temp_stride[i] = w;
336  if (!(uspp->temp[i] = av_malloc_array(uspp->temp_stride[i], h * sizeof(int16_t))))
337  return AVERROR(ENOMEM);
338  if (!(uspp->src [i] = av_malloc_array(uspp->temp_stride[i], h * sizeof(uint8_t))))
339  return AVERROR(ENOMEM);
340  }
341 
342  for (i = 0; i < (1<<uspp->log2_count); i++) {
343  AVCodecContext *avctx_enc;
344  AVDictionary *opts = NULL;
345  int ret;
346 
347  if (!(uspp->avctx_enc[i] = avcodec_alloc_context3(NULL)))
348  return AVERROR(ENOMEM);
349 
350  avctx_enc = uspp->avctx_enc[i];
351  avctx_enc->width = width + BLOCK;
352  avctx_enc->height = height + BLOCK;
353  avctx_enc->time_base = (AVRational){1,25}; // meaningless
354  avctx_enc->gop_size = INT_MAX;
355  avctx_enc->max_b_frames = 0;
356  avctx_enc->pix_fmt = inlink->format;
357  avctx_enc->flags = AV_CODEC_FLAG_QSCALE | AV_CODEC_FLAG_LOW_DELAY;
358  avctx_enc->strict_std_compliance = FF_COMPLIANCE_EXPERIMENTAL;
359  avctx_enc->global_quality = 123;
360  av_dict_set(&opts, "no_bitstream", "1", 0);
361  ret = avcodec_open2(avctx_enc, enc, &opts);
362  av_dict_free(&opts);
363  if (ret < 0)
364  return ret;
365  av_assert0(avctx_enc->codec);
366  }
367 
368  uspp->outbuf_size = (width + BLOCK) * (height + BLOCK) * 10;
369  if (!(uspp->frame = av_frame_alloc()))
370  return AVERROR(ENOMEM);
371  if (!(uspp->pkt = av_packet_alloc()))
372  return AVERROR(ENOMEM);
373  if (!(uspp->outbuf = av_malloc(uspp->outbuf_size)))
374  return AVERROR(ENOMEM);
375 
376  return 0;
377 }
378 
379 static int filter_frame(AVFilterLink *inlink, AVFrame *in)
380 {
381  AVFilterContext *ctx = inlink->dst;
382  USPPContext *uspp = ctx->priv;
383  AVFilterLink *outlink = ctx->outputs[0];
384  AVFrame *out = in;
385 
386  int qp_stride = 0;
387  int8_t *qp_table = NULL;
388  int ret = 0;
389 
390  /* if we are not in a constant user quantizer mode and we don't want to use
391  * the quantizers from the B-frames (B-frames often have a higher QP), we
392  * need to save the qp table from the last non B-frame; this is what the
393  * following code block does */
394  if (!uspp->qp && (uspp->use_bframe_qp || in->pict_type != AV_PICTURE_TYPE_B)) {
395  ret = ff_qp_table_extract(in, &qp_table, &qp_stride, NULL, &uspp->qscale_type);
396  if (ret < 0) {
397  av_frame_free(&in);
398  return ret;
399  }
400 
401  if (!uspp->use_bframe_qp && in->pict_type != AV_PICTURE_TYPE_B) {
402  av_freep(&uspp->non_b_qp_table);
403  uspp->non_b_qp_table = qp_table;
404  uspp->non_b_qp_stride = qp_stride;
405  }
406  }
407 
408  if (uspp->log2_count && !ctx->is_disabled) {
409  if (!uspp->use_bframe_qp && uspp->non_b_qp_table) {
410  qp_table = uspp->non_b_qp_table;
411  qp_stride = uspp->non_b_qp_stride;
412  }
413 
414  if (qp_table || uspp->qp) {
415 
416  /* get a new frame if in-place is not possible or if the dimensions
417  * are not multiple of 8 */
418  if (!av_frame_is_writable(in) || (inlink->w & 7) || (inlink->h & 7)) {
419  const int aligned_w = FFALIGN(inlink->w, 8);
420  const int aligned_h = FFALIGN(inlink->h, 8);
421 
422  out = ff_get_video_buffer(outlink, aligned_w, aligned_h);
423  if (!out) {
424  av_frame_free(&in);
425  if (qp_table != uspp->non_b_qp_table)
426  av_free(qp_table);
427  return AVERROR(ENOMEM);
428  }
429  av_frame_copy_props(out, in);
430  out->width = in->width;
431  out->height = in->height;
432  }
433 
434  filter(uspp, out->data, in->data, out->linesize, in->linesize,
435  inlink->w, inlink->h, qp_table, qp_stride);
436  }
437  }
438 
439  if (in != out) {
440  if (in->data[3])
441  av_image_copy_plane(out->data[3], out->linesize[3],
442  in ->data[3], in ->linesize[3],
443  inlink->w, inlink->h);
444  av_frame_free(&in);
445  }
446  ret = ff_filter_frame(outlink, out);
447  if (qp_table != uspp->non_b_qp_table)
448  av_freep(&qp_table);
449  return ret;
450 }
451 
452 static av_cold void uninit(AVFilterContext *ctx)
453 {
454  USPPContext *uspp = ctx->priv;
455  int i;
456 
457  for (i = 0; i < 3; i++) {
458  av_freep(&uspp->temp[i]);
459  av_freep(&uspp->src[i]);
460  }
461 
462  for (i = 0; i < (1 << uspp->log2_count); i++)
463  avcodec_free_context(&uspp->avctx_enc[i]);
464 
465  av_freep(&uspp->non_b_qp_table);
466  av_freep(&uspp->outbuf);
467  av_packet_free(&uspp->pkt);
468  av_frame_free(&uspp->frame);
469 }
470 
471 static const AVFilterPad uspp_inputs[] = {
472  {
473  .name = "default",
474  .type = AVMEDIA_TYPE_VIDEO,
475  .config_props = config_input,
476  .filter_frame = filter_frame,
477  },
478 };
479 
480 static const AVFilterPad uspp_outputs[] = {
481  {
482  .name = "default",
483  .type = AVMEDIA_TYPE_VIDEO,
484  },
485 };
486 
487 const AVFilter ff_vf_uspp = {
488  .name = "uspp",
489  .description = NULL_IF_CONFIG_SMALL("Apply Ultra Simple / Slow Post-processing filter."),
490  .priv_size = sizeof(USPPContext),
491  .uninit = uninit,
492  FILTER_INPUTS(uspp_inputs),
493  FILTER_OUTPUTS(uspp_outputs),
494  FILTER_PIXFMTS_ARRAY(pix_fmts),
495  .priv_class = &uspp_class,
496  .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL,
497 };
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:98
uninit
static av_cold void uninit(AVFilterContext *ctx)
Definition: vf_uspp.c:452
USPPContext::src
uint8_t * src[3]
Definition: vf_uspp.c:50
USPPContext::frame
AVFrame * frame
Definition: vf_uspp.c:56
USPPContext::qp
int qp
Definition: vf_uspp.c:47
av_packet_unref
void av_packet_unref(AVPacket *pkt)
Wipe the packet.
Definition: avpacket.c:424
AVCodec
AVCodec.
Definition: codec.h:202
stride
int stride
Definition: mace.c:144
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
filter_frame
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
Definition: vf_uspp.c:379
USPPContext::avctx_enc
AVCodecContext * avctx_enc[BLOCK *BLOCK]
Definition: vf_uspp.c:54
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
out
FILE * out
Definition: movenc.c:54
FF_COMPLIANCE_EXPERIMENTAL
#define FF_COMPLIANCE_EXPERIMENTAL
Allow nonstandardized experimental things.
Definition: avcodec.h:1285
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:2660
FILTER_PIXFMTS_ARRAY
#define FILTER_PIXFMTS_ARRAY(array)
Definition: internal.h:171
AV_CODEC_FLAG_QSCALE
#define AV_CODEC_FLAG_QSCALE
Use fixed qscale.
Definition: avcodec.h:210
USPPContext::temp
uint16_t * temp[3]
Definition: vf_uspp.c:51
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_frame_free
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:109
avcodec_find_encoder
const AVCodec * avcodec_find_encoder(enum AVCodecID id)
Find a registered encoder with a matching codec ID.
Definition: allcodecs.c:916
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:317
pixdesc.h
index
fg index
Definition: ffmpeg_filter.c:167
AVFrame::width
int width
Definition: frame.h:389
w
uint8_t w
Definition: llviddspenc.c:38
AVPacket::data
uint8_t * data
Definition: packet.h:373
AVOption
AVOption.
Definition: opt.h:247
BLOCK
#define BLOCK
Definition: vf_uspp.c:41
offset
static const uint8_t offset[511][2]
Definition: vf_uspp.c:85
AVDictionary
Definition: dict.c:30
config_input
static int config_input(AVFilterLink *inlink)
Definition: vf_uspp.c:306
AVFilter::name
const char * name
Filter name.
Definition: avfilter.h:169
USPPContext::vsub
int vsub
Definition: vf_uspp.c:46
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:75
AVFrame::data
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:338
av_malloc
#define av_malloc(s)
Definition: tableprint_vlc.h:31
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:60
USPPContext::qscale_type
int qscale_type
Definition: vf_uspp.c:48
AVCodecContext::codec
const struct AVCodec * codec
Definition: avcodec.h:392
ff_norm_qscale
static int ff_norm_qscale(int qscale, int type)
Normalize the qscale factor FIXME the H264 qscale is a log based scale, mpeg1/2 is not,...
Definition: qp_table.h:39
AVCodecContext::flags
int flags
AV_CODEC_FLAG_*.
Definition: avcodec.h:463
AV_CODEC_FLAG_LOW_DELAY
#define AV_CODEC_FLAG_LOW_DELAY
Force low delay.
Definition: avcodec.h:264
AVFilterPad
A filter pad used for either input or output.
Definition: internal.h:50
av_frame_alloc
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
Definition: frame.c:97
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:159
uspp_outputs
static const AVFilterPad uspp_outputs[]
Definition: vf_uspp.c:480
avcodec_alloc_context3
AVCodecContext * avcodec_alloc_context3(const AVCodec *codec)
Allocate an AVCodecContext and set its fields to default values.
Definition: options.c:141
width
#define width
AVCodecContext::global_quality
int global_quality
Global quality for codecs which cannot change it per frame.
Definition: avcodec.h:449
AV_CEIL_RSHIFT
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:51
av_assert0
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
ctx
AVFormatContext * ctx
Definition: movenc.c:48
USPPContext::non_b_qp_stride
int non_b_qp_stride
Definition: vf_uspp.c:59
AV_PIX_FMT_YUV420P
@ AV_PIX_FMT_YUV420P
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:66
FILTER_INPUTS
#define FILTER_INPUTS(array)
Definition: internal.h:191
AV_PIX_FMT_YUVJ444P
@ AV_PIX_FMT_YUVJ444P
planar YUV 4:4:4, 24bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV444P and setting col...
Definition: pixfmt.h:80
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
av_frame_copy_props
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
Definition: frame.c:537
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:156
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:78
USPPContext::log2_count
int log2_count
Definition: vf_uspp.c:45
src
#define src
Definition: vp8dsp.c:255
USPPContext::pkt
AVPacket * pkt
Definition: vf_uspp.c:55
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:137
dither
static const uint8_t dither[8][8]
Definition: vf_uspp.c:74
AV_PIX_FMT_GRAY8
@ AV_PIX_FMT_GRAY8
Y , 8bpp.
Definition: pixfmt.h:74
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:506
USPPContext::outbuf
uint8_t * outbuf
Definition: vf_uspp.c:53
AVFrame::pict_type
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:414
AVPacket::size
int size
Definition: packet.h:374
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:117
AVCodecContext::gop_size
int gop_size
the number of pictures in a group of pictures, or 0 for intra_only
Definition: avcodec.h:578
USPPContext::av_class
const AVClass * av_class
Definition: vf_uspp.c:44
AVFrame::quality
int quality
quality (between 1 (good) and FF_LAMBDA_MAX (bad))
Definition: frame.h:453
av_frame_is_writable
int av_frame_is_writable(AVFrame *frame)
Check if the frame data is writable.
Definition: frame.c:473
AVFrame::format
int format
format of the frame, -1 if unknown or unset Values correspond to enum AVPixelFormat for video frames,...
Definition: frame.h:404
height
#define height
av_packet_alloc
AVPacket * av_packet_alloc(void)
Allocate an AVPacket and set its fields to default values.
Definition: avpacket.c:64
av_dict_free
void av_dict_free(AVDictionary **pm)
Free all the memory allocated for an AVDictionary struct and all keys and values.
Definition: dict.c:203
internal.h
DECLARE_ALIGNED
#define DECLARE_ALIGNED(n, t, v)
Definition: mem.h:116
USPPContext::frame_dec
AVFrame * frame_dec
Definition: vf_uspp.c:57
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:271
MAX_LEVEL
#define MAX_LEVEL
Definition: vf_uspp.c:40
av_malloc_array
#define av_malloc_array(a, b)
Definition: tableprint_vlc.h:32
AVFilterPad::name
const char * name
Pad name.
Definition: internal.h:56
AVCodecContext::height
int height
Definition: avcodec.h:556
AVCodecContext::pix_fmt
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:593
avcodec.h
USPPContext
Definition: vf_uspp.c:43
AVFilter
Filter definition.
Definition: avfilter.h:165
ret
ret
Definition: filter_design.txt:187
pix_fmts
static enum AVPixelFormat pix_fmts[]
Definition: vf_uspp.c:296
AVCodecContext::strict_std_compliance
int strict_std_compliance
strictly follow the standard (MPEG-4, ...).
Definition: avcodec.h:1280
uspp_options
static const AVOption uspp_options[]
Definition: vf_uspp.c:65
AVCodecContext
main external API structure.
Definition: avcodec.h:383
AVFrame::height
int height
Definition: frame.h:389
AV_CODEC_ID_SNOW
@ AV_CODEC_ID_SNOW
Definition: codec_id.h:262
uspp_inputs
static const AVFilterPad uspp_inputs[]
Definition: vf_uspp.c:471
AV_PICTURE_TYPE_B
@ AV_PICTURE_TYPE_B
Bi-dir predicted.
Definition: avutil.h:276
AV_PIX_FMT_NONE
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:65
AV_OPT_TYPE_INT
@ AV_OPT_TYPE_INT
Definition: opt.h:224
avfilter.h
temp
else temp
Definition: vf_mcdeint.c:248
filter
static void filter(USPPContext *p, 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:187
AV_PIX_FMT_YUV444P
@ AV_PIX_FMT_YUV444P
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:71
AVFilterContext
An instance of a filter.
Definition: avfilter.h:402
USPPContext::non_b_qp_table
int8_t * non_b_qp_table
Definition: vf_uspp.c:58
desc
const char * desc
Definition: libsvtav1.c:79
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
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:655
FLAGS
#define FLAGS
Definition: vf_uspp.c:64
ff_qp_table_extract
int ff_qp_table_extract(AVFrame *frame, int8_t **table, int *table_w, int *table_h, int *qscale_type)
Extract a libpostproc-compatible QP table - an 8-bit QP value per 16x16 macroblock,...
Definition: qp_table.c:30
AVPixFmtDescriptor
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:69
av_free
#define av_free(p)
Definition: tableprint_vlc.h:34
FFALIGN
#define FFALIGN(x, a)
Definition: macros.h:78
AVPacket
This structure stores compressed data.
Definition: packet.h:350
AV_OPT_TYPE_BOOL
@ AV_OPT_TYPE_BOOL
Definition: opt.h:241
FILTER_OUTPUTS
#define FILTER_OUTPUTS(array)
Definition: internal.h:192
av_freep
#define av_freep(p)
Definition: tableprint_vlc.h:35
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:70
d
d
Definition: ffmpeg_filter.c:153
USPPContext::outbuf_size
int outbuf_size
Definition: vf_uspp.c:52
AVCodecContext::width
int width
picture width / height.
Definition: avcodec.h:556
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:154
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:362
AV_PIX_FMT_YUV410P
@ AV_PIX_FMT_YUV410P
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: pixfmt.h:72
block
The exact code depends on how similar the blocks are and how related they are to the block
Definition: filter_design.txt:207
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:28
h
h
Definition: vp9dsp_template.c:2038
OFFSET
#define OFFSET(x)
Definition: vf_uspp.c:63
FF_QP2LAMBDA
#define FF_QP2LAMBDA
factor to convert from H.263 QP to lambda
Definition: avutil.h:227
ff_vf_uspp
const AVFilter ff_vf_uspp
Definition: vf_uspp.c:487
USPPContext::hsub
int hsub
Definition: vf_uspp.c:46
USPPContext::temp_stride
int temp_stride[3]
Definition: vf_uspp.c:49
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