FFmpeg
ffv1enc.c
Go to the documentation of this file.
1 /*
2  * FFV1 encoder
3  *
4  * Copyright (c) 2003-2013 Michael Niedermayer <michaelni@gmx.at>
5  *
6  * This file is part of FFmpeg.
7  *
8  * FFmpeg is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU Lesser General Public
10  * License as published by the Free Software Foundation; either
11  * version 2.1 of the License, or (at your option) any later version.
12  *
13  * FFmpeg is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16  * Lesser General Public License for more details.
17  *
18  * You should have received a copy of the GNU Lesser General Public
19  * License along with FFmpeg; if not, write to the Free Software
20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21  */
22 
23 /**
24  * @file
25  * FF Video Codec 1 (a lossless codec) encoder
26  */
27 
28 #include "libavutil/attributes.h"
29 #include "libavutil/avassert.h"
30 #include "libavutil/crc.h"
31 #include "libavutil/opt.h"
32 #include "libavutil/imgutils.h"
33 #include "libavutil/pixdesc.h"
34 
35 #include "avcodec.h"
36 #include "internal.h"
37 #include "put_bits.h"
38 #include "rangecoder.h"
39 #include "golomb.h"
40 #include "mathops.h"
41 #include "ffv1.h"
42 
43 static const int8_t quant5_10bit[256] = {
44  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1,
45  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
46  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
47  1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
48  2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
49  2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
50  2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
51  2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
52  -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2,
53  -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2,
54  -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2,
55  -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2,
56  -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -1,
57  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
58  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
59  -1, -1, -1, -1, -1, -1, -0, -0, -0, -0, -0, -0, -0, -0, -0, -0,
60 };
61 
62 static const int8_t quant5[256] = {
63  0, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
64  2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
65  2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
66  2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
67  2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
68  2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
69  2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
70  2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
71  -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2,
72  -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2,
73  -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2,
74  -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2,
75  -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2,
76  -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2,
77  -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2,
78  -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -1, -1, -1,
79 };
80 
81 static const int8_t quant9_10bit[256] = {
82  0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2,
83  2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3,
84  3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
85  3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4,
86  4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
87  4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
88  4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
89  4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
90  -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4,
91  -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4,
92  -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4,
93  -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4,
94  -4, -4, -4, -4, -4, -4, -4, -4, -4, -3, -3, -3, -3, -3, -3, -3,
95  -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3,
96  -3, -3, -3, -3, -3, -3, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2,
97  -2, -2, -2, -2, -1, -1, -1, -1, -1, -1, -1, -1, -0, -0, -0, -0,
98 };
99 
100 static const int8_t quant11[256] = {
101  0, 1, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4,
102  4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
103  4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
104  5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
105  5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
106  5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
107  5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
108  5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
109  -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5,
110  -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5,
111  -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5,
112  -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5,
113  -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5,
114  -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -4, -4,
115  -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4,
116  -4, -4, -4, -4, -4, -3, -3, -3, -3, -3, -3, -3, -2, -2, -2, -1,
117 };
118 
119 static const uint8_t ver2_state[256] = {
120  0, 10, 10, 10, 10, 16, 16, 16, 28, 16, 16, 29, 42, 49, 20, 49,
121  59, 25, 26, 26, 27, 31, 33, 33, 33, 34, 34, 37, 67, 38, 39, 39,
122  40, 40, 41, 79, 43, 44, 45, 45, 48, 48, 64, 50, 51, 52, 88, 52,
123  53, 74, 55, 57, 58, 58, 74, 60, 101, 61, 62, 84, 66, 66, 68, 69,
124  87, 82, 71, 97, 73, 73, 82, 75, 111, 77, 94, 78, 87, 81, 83, 97,
125  85, 83, 94, 86, 99, 89, 90, 99, 111, 92, 93, 134, 95, 98, 105, 98,
126  105, 110, 102, 108, 102, 118, 103, 106, 106, 113, 109, 112, 114, 112, 116, 125,
127  115, 116, 117, 117, 126, 119, 125, 121, 121, 123, 145, 124, 126, 131, 127, 129,
128  165, 130, 132, 138, 133, 135, 145, 136, 137, 139, 146, 141, 143, 142, 144, 148,
129  147, 155, 151, 149, 151, 150, 152, 157, 153, 154, 156, 168, 158, 162, 161, 160,
130  172, 163, 169, 164, 166, 184, 167, 170, 177, 174, 171, 173, 182, 176, 180, 178,
131  175, 189, 179, 181, 186, 183, 192, 185, 200, 187, 191, 188, 190, 197, 193, 196,
132  197, 194, 195, 196, 198, 202, 199, 201, 210, 203, 207, 204, 205, 206, 208, 214,
133  209, 211, 221, 212, 213, 215, 224, 216, 217, 218, 219, 220, 222, 228, 223, 225,
134  226, 224, 227, 229, 240, 230, 231, 232, 233, 234, 235, 236, 238, 239, 237, 242,
135  241, 243, 242, 244, 245, 246, 247, 248, 249, 250, 251, 252, 252, 253, 254, 255,
136 };
137 
138 static void find_best_state(uint8_t best_state[256][256],
139  const uint8_t one_state[256])
140 {
141  int i, j, k, m;
142  double l2tab[256];
143 
144  for (i = 1; i < 256; i++)
145  l2tab[i] = log2(i / 256.0);
146 
147  for (i = 0; i < 256; i++) {
148  double best_len[256];
149  double p = i / 256.0;
150 
151  for (j = 0; j < 256; j++)
152  best_len[j] = 1 << 30;
153 
154  for (j = FFMAX(i - 10, 1); j < FFMIN(i + 11, 256); j++) {
155  double occ[256] = { 0 };
156  double len = 0;
157  occ[j] = 1.0;
158 
159  if (!one_state[j])
160  continue;
161 
162  for (k = 0; k < 256; k++) {
163  double newocc[256] = { 0 };
164  for (m = 1; m < 256; m++)
165  if (occ[m]) {
166  len -=occ[m]*( p *l2tab[ m]
167  + (1-p)*l2tab[256-m]);
168  }
169  if (len < best_len[k]) {
170  best_len[k] = len;
171  best_state[i][k] = j;
172  }
173  for (m = 1; m < 256; m++)
174  if (occ[m]) {
175  newocc[ one_state[ m]] += occ[m] * p;
176  newocc[256 - one_state[256 - m]] += occ[m] * (1 - p);
177  }
178  memcpy(occ, newocc, sizeof(occ));
179  }
180  }
181  }
182 }
183 
185  uint8_t *state, int v,
186  int is_signed,
187  uint64_t rc_stat[256][2],
188  uint64_t rc_stat2[32][2])
189 {
190  int i;
191 
192 #define put_rac(C, S, B) \
193  do { \
194  if (rc_stat) { \
195  rc_stat[*(S)][B]++; \
196  rc_stat2[(S) - state][B]++; \
197  } \
198  put_rac(C, S, B); \
199  } while (0)
200 
201  if (v) {
202  const int a = FFABS(v);
203  const int e = av_log2(a);
204  put_rac(c, state + 0, 0);
205  if (e <= 9) {
206  for (i = 0; i < e; i++)
207  put_rac(c, state + 1 + i, 1); // 1..10
208  put_rac(c, state + 1 + i, 0);
209 
210  for (i = e - 1; i >= 0; i--)
211  put_rac(c, state + 22 + i, (a >> i) & 1); // 22..31
212 
213  if (is_signed)
214  put_rac(c, state + 11 + e, v < 0); // 11..21
215  } else {
216  for (i = 0; i < e; i++)
217  put_rac(c, state + 1 + FFMIN(i, 9), 1); // 1..10
218  put_rac(c, state + 1 + 9, 0);
219 
220  for (i = e - 1; i >= 0; i--)
221  put_rac(c, state + 22 + FFMIN(i, 9), (a >> i) & 1); // 22..31
222 
223  if (is_signed)
224  put_rac(c, state + 11 + 10, v < 0); // 11..21
225  }
226  } else {
227  put_rac(c, state + 0, 1);
228  }
229 #undef put_rac
230 }
231 
232 static av_noinline void put_symbol(RangeCoder *c, uint8_t *state,
233  int v, int is_signed)
234 {
235  put_symbol_inline(c, state, v, is_signed, NULL, NULL);
236 }
237 
238 
239 static inline void put_vlc_symbol(PutBitContext *pb, VlcState *const state,
240  int v, int bits)
241 {
242  int i, k, code;
243  v = fold(v - state->bias, bits);
244 
245  i = state->count;
246  k = 0;
247  while (i < state->error_sum) { // FIXME: optimize
248  k++;
249  i += i;
250  }
251 
252  av_assert2(k <= 13);
253 
254  code = v ^ ((2 * state->drift + state->count) >> 31);
255 
256  ff_dlog(NULL, "v:%d/%d bias:%d error:%d drift:%d count:%d k:%d\n", v, code,
257  state->bias, state->error_sum, state->drift, state->count, k);
258  set_sr_golomb(pb, code, k, 12, bits);
259 
261 }
262 
263 #define TYPE int16_t
264 #define RENAME(name) name
265 #include "ffv1enc_template.c"
266 #undef TYPE
267 #undef RENAME
268 
269 #define TYPE int32_t
270 #define RENAME(name) name ## 32
271 #include "ffv1enc_template.c"
272 
273 static int encode_plane(FFV1Context *s, uint8_t *src, int w, int h,
274  int stride, int plane_index, int pixel_stride)
275 {
276  int x, y, i, ret;
277  const int ring_size = s->context_model ? 3 : 2;
278  int16_t *sample[3];
279  s->run_index = 0;
280 
281  memset(s->sample_buffer, 0, ring_size * (w + 6) * sizeof(*s->sample_buffer));
282 
283  for (y = 0; y < h; y++) {
284  for (i = 0; i < ring_size; i++)
285  sample[i] = s->sample_buffer + (w + 6) * ((h + i - y) % ring_size) + 3;
286 
287  sample[0][-1]= sample[1][0 ];
288  sample[1][ w]= sample[1][w-1];
289  if (s->bits_per_raw_sample <= 8) {
290  for (x = 0; x < w; x++)
291  sample[0][x] = src[x * pixel_stride + stride * y];
292  if((ret = encode_line(s, w, sample, plane_index, 8)) < 0)
293  return ret;
294  } else {
295  if (s->packed_at_lsb) {
296  for (x = 0; x < w; x++) {
297  sample[0][x] = ((uint16_t*)(src + stride*y))[x];
298  }
299  } else {
300  for (x = 0; x < w; x++) {
301  sample[0][x] = ((uint16_t*)(src + stride*y))[x] >> (16 - s->bits_per_raw_sample);
302  }
303  }
304  if((ret = encode_line(s, w, sample, plane_index, s->bits_per_raw_sample)) < 0)
305  return ret;
306  }
307  }
308  return 0;
309 }
310 
311 static void write_quant_table(RangeCoder *c, int16_t *quant_table)
312 {
313  int last = 0;
314  int i;
315  uint8_t state[CONTEXT_SIZE];
316  memset(state, 128, sizeof(state));
317 
318  for (i = 1; i < 128; i++)
319  if (quant_table[i] != quant_table[i - 1]) {
320  put_symbol(c, state, i - last - 1, 0);
321  last = i;
322  }
323  put_symbol(c, state, i - last - 1, 0);
324 }
325 
327  int16_t quant_table[MAX_CONTEXT_INPUTS][256])
328 {
329  int i;
330  for (i = 0; i < 5; i++)
332 }
333 
334 static int contains_non_128(uint8_t (*initial_state)[CONTEXT_SIZE],
335  int nb_contexts)
336 {
337  if (!initial_state)
338  return 0;
339  for (int i = 0; i < nb_contexts; i++)
340  for (int j = 0; j < CONTEXT_SIZE; j++)
341  if (initial_state[i][j] != 128)
342  return 1;
343  return 0;
344 }
345 
347 {
348  uint8_t state[CONTEXT_SIZE];
349  int i, j;
350  RangeCoder *const c = &f->slice_context[0]->c;
351 
352  memset(state, 128, sizeof(state));
353 
354  if (f->version < 2) {
355  put_symbol(c, state, f->version, 0);
356  put_symbol(c, state, f->ac, 0);
357  if (f->ac == AC_RANGE_CUSTOM_TAB) {
358  for (i = 1; i < 256; i++)
359  put_symbol(c, state,
360  f->state_transition[i] - c->one_state[i], 1);
361  }
362  put_symbol(c, state, f->colorspace, 0); //YUV cs type
363  if (f->version > 0)
364  put_symbol(c, state, f->bits_per_raw_sample, 0);
365  put_rac(c, state, f->chroma_planes);
366  put_symbol(c, state, f->chroma_h_shift, 0);
367  put_symbol(c, state, f->chroma_v_shift, 0);
368  put_rac(c, state, f->transparency);
369 
370  write_quant_tables(c, f->quant_table);
371  } else if (f->version < 3) {
372  put_symbol(c, state, f->slice_count, 0);
373  for (i = 0; i < f->slice_count; i++) {
374  FFV1Context *fs = f->slice_context[i];
375  put_symbol(c, state,
376  (fs->slice_x + 1) * f->num_h_slices / f->width, 0);
377  put_symbol(c, state,
378  (fs->slice_y + 1) * f->num_v_slices / f->height, 0);
379  put_symbol(c, state,
380  (fs->slice_width + 1) * f->num_h_slices / f->width - 1,
381  0);
382  put_symbol(c, state,
383  (fs->slice_height + 1) * f->num_v_slices / f->height - 1,
384  0);
385  for (j = 0; j < f->plane_count; j++) {
386  put_symbol(c, state, f->plane[j].quant_table_index, 0);
387  av_assert0(f->plane[j].quant_table_index == f->context_model);
388  }
389  }
390  }
391 }
392 
394 {
395  RangeCoder *const c = &f->c;
396  uint8_t state[CONTEXT_SIZE];
397  int i, j, k;
398  uint8_t state2[32][CONTEXT_SIZE];
399  unsigned v;
400 
401  memset(state2, 128, sizeof(state2));
402  memset(state, 128, sizeof(state));
403 
404  f->avctx->extradata_size = 10000 + 4 +
405  (11 * 11 * 5 * 5 * 5 + 11 * 11 * 11) * 32;
406  f->avctx->extradata = av_malloc(f->avctx->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
407  if (!f->avctx->extradata)
408  return AVERROR(ENOMEM);
409  ff_init_range_encoder(c, f->avctx->extradata, f->avctx->extradata_size);
410  ff_build_rac_states(c, 0.05 * (1LL << 32), 256 - 8);
411 
412  put_symbol(c, state, f->version, 0);
413  if (f->version > 2) {
414  if (f->version == 3) {
415  f->micro_version = 4;
416  } else if (f->version == 4)
417  f->micro_version = 2;
418  put_symbol(c, state, f->micro_version, 0);
419  }
420 
421  put_symbol(c, state, f->ac, 0);
422  if (f->ac == AC_RANGE_CUSTOM_TAB)
423  for (i = 1; i < 256; i++)
424  put_symbol(c, state, f->state_transition[i] - c->one_state[i], 1);
425 
426  put_symbol(c, state, f->colorspace, 0); // YUV cs type
427  put_symbol(c, state, f->bits_per_raw_sample, 0);
428  put_rac(c, state, f->chroma_planes);
429  put_symbol(c, state, f->chroma_h_shift, 0);
430  put_symbol(c, state, f->chroma_v_shift, 0);
431  put_rac(c, state, f->transparency);
432  put_symbol(c, state, f->num_h_slices - 1, 0);
433  put_symbol(c, state, f->num_v_slices - 1, 0);
434 
435  put_symbol(c, state, f->quant_table_count, 0);
436  for (i = 0; i < f->quant_table_count; i++)
437  write_quant_tables(c, f->quant_tables[i]);
438 
439  for (i = 0; i < f->quant_table_count; i++) {
440  if (contains_non_128(f->initial_states[i], f->context_count[i])) {
441  put_rac(c, state, 1);
442  for (j = 0; j < f->context_count[i]; j++)
443  for (k = 0; k < CONTEXT_SIZE; k++) {
444  int pred = j ? f->initial_states[i][j - 1][k] : 128;
445  put_symbol(c, state2[k],
446  (int8_t)(f->initial_states[i][j][k] - pred), 1);
447  }
448  } else {
449  put_rac(c, state, 0);
450  }
451  }
452 
453  if (f->version > 2) {
454  put_symbol(c, state, f->ec, 0);
455  put_symbol(c, state, f->intra = (f->avctx->gop_size < 2), 0);
456  }
457 
458  f->avctx->extradata_size = ff_rac_terminate(c, 0);
459  v = av_crc(av_crc_get_table(AV_CRC_32_IEEE), 0, f->avctx->extradata, f->avctx->extradata_size);
460  AV_WL32(f->avctx->extradata + f->avctx->extradata_size, v);
461  f->avctx->extradata_size += 4;
462 
463  return 0;
464 }
465 
466 static int sort_stt(FFV1Context *s, uint8_t stt[256])
467 {
468  int i, i2, changed, print = 0;
469 
470  do {
471  changed = 0;
472  for (i = 12; i < 244; i++) {
473  for (i2 = i + 1; i2 < 245 && i2 < i + 4; i2++) {
474 
475 #define COST(old, new) \
476  s->rc_stat[old][0] * -log2((256 - (new)) / 256.0) + \
477  s->rc_stat[old][1] * -log2((new) / 256.0)
478 
479 #define COST2(old, new) \
480  COST(old, new) + COST(256 - (old), 256 - (new))
481 
482  double size0 = COST2(i, i) + COST2(i2, i2);
483  double sizeX = COST2(i, i2) + COST2(i2, i);
484  if (size0 - sizeX > size0*(1e-14) && i != 128 && i2 != 128) {
485  int j;
486  FFSWAP(int, stt[i], stt[i2]);
487  FFSWAP(int, s->rc_stat[i][0], s->rc_stat[i2][0]);
488  FFSWAP(int, s->rc_stat[i][1], s->rc_stat[i2][1]);
489  if (i != 256 - i2) {
490  FFSWAP(int, stt[256 - i], stt[256 - i2]);
491  FFSWAP(int, s->rc_stat[256 - i][0], s->rc_stat[256 - i2][0]);
492  FFSWAP(int, s->rc_stat[256 - i][1], s->rc_stat[256 - i2][1]);
493  }
494  for (j = 1; j < 256; j++) {
495  if (stt[j] == i)
496  stt[j] = i2;
497  else if (stt[j] == i2)
498  stt[j] = i;
499  if (i != 256 - i2) {
500  if (stt[256 - j] == 256 - i)
501  stt[256 - j] = 256 - i2;
502  else if (stt[256 - j] == 256 - i2)
503  stt[256 - j] = 256 - i;
504  }
505  }
506  print = changed = 1;
507  }
508  }
509  }
510  } while (changed);
511  return print;
512 }
513 
515 {
518  int i, j, k, m, ret;
519 
520  if ((ret = ff_ffv1_common_init(avctx)) < 0)
521  return ret;
522 
523  s->version = 0;
524 
526  avctx->slices > 1)
527  s->version = FFMAX(s->version, 2);
528 
529  // Unspecified level & slices, we choose version 1.2+ to ensure multithreaded decodability
530  if (avctx->slices == 0 && avctx->level < 0 && avctx->width * avctx->height > 720*576)
531  s->version = FFMAX(s->version, 2);
532 
533  if (avctx->level <= 0 && s->version == 2) {
534  s->version = 3;
535  }
536  if (avctx->level >= 0 && avctx->level <= 4) {
537  if (avctx->level < s->version) {
538  av_log(avctx, AV_LOG_ERROR, "Version %d needed for requested features but %d requested\n", s->version, avctx->level);
539  return AVERROR(EINVAL);
540  }
541  s->version = avctx->level;
542  }
543 
544  if (s->ec < 0) {
545  s->ec = (s->version >= 3);
546  }
547 
548  // CRC requires version 3+
549  if (s->ec)
550  s->version = FFMAX(s->version, 3);
551 
552  if ((s->version == 2 || s->version>3) && avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
553  av_log(avctx, AV_LOG_ERROR, "Version 2 needed for requested features but version 2 is experimental and not enabled\n");
554  return AVERROR_INVALIDDATA;
555  }
556 
557  if (s->ac == 1) // Compatbility with common command line usage
558  s->ac = AC_RANGE_CUSTOM_TAB;
559  else if (s->ac == AC_RANGE_DEFAULT_TAB_FORCE)
560  s->ac = AC_RANGE_DEFAULT_TAB;
561 
562  s->plane_count = 3;
563  switch(avctx->pix_fmt) {
564  case AV_PIX_FMT_GRAY9:
565  case AV_PIX_FMT_YUV444P9:
566  case AV_PIX_FMT_YUV422P9:
567  case AV_PIX_FMT_YUV420P9:
572  s->bits_per_raw_sample = 9;
573  case AV_PIX_FMT_GRAY10:
581  if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample)
582  s->bits_per_raw_sample = 10;
583  case AV_PIX_FMT_GRAY12:
588  if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample)
589  s->bits_per_raw_sample = 12;
593  if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample)
594  s->bits_per_raw_sample = 14;
595  s->packed_at_lsb = 1;
596  case AV_PIX_FMT_GRAY16:
603  if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample) {
604  s->bits_per_raw_sample = 16;
605  } else if (!s->bits_per_raw_sample) {
606  s->bits_per_raw_sample = avctx->bits_per_raw_sample;
607  }
608  if (s->bits_per_raw_sample <= 8) {
609  av_log(avctx, AV_LOG_ERROR, "bits_per_raw_sample invalid\n");
610  return AVERROR_INVALIDDATA;
611  }
612  s->version = FFMAX(s->version, 1);
613  case AV_PIX_FMT_GRAY8:
614  case AV_PIX_FMT_YA8:
615  case AV_PIX_FMT_YUV444P:
616  case AV_PIX_FMT_YUV440P:
617  case AV_PIX_FMT_YUV422P:
618  case AV_PIX_FMT_YUV420P:
619  case AV_PIX_FMT_YUV411P:
620  case AV_PIX_FMT_YUV410P:
621  case AV_PIX_FMT_YUVA444P:
622  case AV_PIX_FMT_YUVA422P:
623  case AV_PIX_FMT_YUVA420P:
624  s->chroma_planes = desc->nb_components < 3 ? 0 : 1;
625  s->colorspace = 0;
626  s->transparency = !!(desc->flags & AV_PIX_FMT_FLAG_ALPHA);
627  if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample)
628  s->bits_per_raw_sample = 8;
629  else if (!s->bits_per_raw_sample)
630  s->bits_per_raw_sample = 8;
631  break;
632  case AV_PIX_FMT_RGB32:
633  s->colorspace = 1;
634  s->transparency = 1;
635  s->chroma_planes = 1;
636  s->bits_per_raw_sample = 8;
637  break;
638  case AV_PIX_FMT_RGBA64:
639  s->colorspace = 1;
640  s->transparency = 1;
641  s->chroma_planes = 1;
642  s->bits_per_raw_sample = 16;
643  s->use32bit = 1;
644  s->version = FFMAX(s->version, 1);
645  break;
646  case AV_PIX_FMT_RGB48:
647  s->colorspace = 1;
648  s->chroma_planes = 1;
649  s->bits_per_raw_sample = 16;
650  s->use32bit = 1;
651  s->version = FFMAX(s->version, 1);
652  break;
653  case AV_PIX_FMT_0RGB32:
654  s->colorspace = 1;
655  s->chroma_planes = 1;
656  s->bits_per_raw_sample = 8;
657  break;
658  case AV_PIX_FMT_GBRP9:
660  s->bits_per_raw_sample = 9;
661  case AV_PIX_FMT_GBRP10:
662  case AV_PIX_FMT_GBRAP10:
663  if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample)
664  s->bits_per_raw_sample = 10;
665  case AV_PIX_FMT_GBRP12:
666  case AV_PIX_FMT_GBRAP12:
667  if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample)
668  s->bits_per_raw_sample = 12;
669  case AV_PIX_FMT_GBRP14:
670  if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample)
671  s->bits_per_raw_sample = 14;
672  case AV_PIX_FMT_GBRP16:
673  case AV_PIX_FMT_GBRAP16:
674  if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample)
675  s->bits_per_raw_sample = 16;
676  else if (!s->bits_per_raw_sample)
677  s->bits_per_raw_sample = avctx->bits_per_raw_sample;
678  s->transparency = !!(desc->flags & AV_PIX_FMT_FLAG_ALPHA);
679  s->colorspace = 1;
680  s->chroma_planes = 1;
681  if (s->bits_per_raw_sample >= 16) {
682  s->use32bit = 1;
683  }
684  s->version = FFMAX(s->version, 1);
685  break;
686  default:
687  av_log(avctx, AV_LOG_ERROR, "format not supported\n");
688  return AVERROR(ENOSYS);
689  }
690  av_assert0(s->bits_per_raw_sample >= 8);
691 
692  if (s->bits_per_raw_sample > 8) {
693  if (s->ac == AC_GOLOMB_RICE) {
695  "bits_per_raw_sample > 8, forcing range coder\n");
696  s->ac = AC_RANGE_CUSTOM_TAB;
697  }
698  }
699 
700  if (s->ac == AC_RANGE_CUSTOM_TAB) {
701  for (i = 1; i < 256; i++)
702  s->state_transition[i] = ver2_state[i];
703  } else {
704  RangeCoder c;
705  ff_build_rac_states(&c, 0.05 * (1LL << 32), 256 - 8);
706  for (i = 1; i < 256; i++)
707  s->state_transition[i] = c.one_state[i];
708  }
709 
710  for (i = 0; i < 256; i++) {
711  s->quant_table_count = 2;
712  if (s->bits_per_raw_sample <= 8) {
713  s->quant_tables[0][0][i]= quant11[i];
714  s->quant_tables[0][1][i]= 11*quant11[i];
715  s->quant_tables[0][2][i]= 11*11*quant11[i];
716  s->quant_tables[1][0][i]= quant11[i];
717  s->quant_tables[1][1][i]= 11*quant11[i];
718  s->quant_tables[1][2][i]= 11*11*quant5 [i];
719  s->quant_tables[1][3][i]= 5*11*11*quant5 [i];
720  s->quant_tables[1][4][i]= 5*5*11*11*quant5 [i];
721  } else {
722  s->quant_tables[0][0][i]= quant9_10bit[i];
723  s->quant_tables[0][1][i]= 11*quant9_10bit[i];
724  s->quant_tables[0][2][i]= 11*11*quant9_10bit[i];
725  s->quant_tables[1][0][i]= quant9_10bit[i];
726  s->quant_tables[1][1][i]= 11*quant9_10bit[i];
727  s->quant_tables[1][2][i]= 11*11*quant5_10bit[i];
728  s->quant_tables[1][3][i]= 5*11*11*quant5_10bit[i];
729  s->quant_tables[1][4][i]= 5*5*11*11*quant5_10bit[i];
730  }
731  }
732  s->context_count[0] = (11 * 11 * 11 + 1) / 2;
733  s->context_count[1] = (11 * 11 * 5 * 5 * 5 + 1) / 2;
734  memcpy(s->quant_table, s->quant_tables[s->context_model],
735  sizeof(s->quant_table));
736 
737  for (i = 0; i < s->plane_count; i++) {
738  PlaneContext *const p = &s->plane[i];
739 
740  memcpy(p->quant_table, s->quant_table, sizeof(p->quant_table));
741  p->quant_table_index = s->context_model;
742  p->context_count = s->context_count[p->quant_table_index];
743  }
744 
746  return ret;
747 
748  if (!s->transparency)
749  s->plane_count = 2;
750  if (!s->chroma_planes && s->version > 3)
751  s->plane_count--;
752 
753  ret = av_pix_fmt_get_chroma_sub_sample (avctx->pix_fmt, &s->chroma_h_shift, &s->chroma_v_shift);
754  if (ret)
755  return ret;
756 
757  s->picture_number = 0;
758 
760  for (i = 0; i < s->quant_table_count; i++) {
761  s->rc_stat2[i] = av_mallocz(s->context_count[i] *
762  sizeof(*s->rc_stat2[i]));
763  if (!s->rc_stat2[i])
764  return AVERROR(ENOMEM);
765  }
766  }
767  if (avctx->stats_in) {
768  char *p = avctx->stats_in;
769  uint8_t (*best_state)[256] = av_malloc_array(256, 256);
770  int gob_count = 0;
771  char *next;
772  if (!best_state)
773  return AVERROR(ENOMEM);
774 
775  av_assert0(s->version >= 2);
776 
777  for (;;) {
778  for (j = 0; j < 256; j++)
779  for (i = 0; i < 2; i++) {
780  s->rc_stat[j][i] = strtol(p, &next, 0);
781  if (next == p) {
783  "2Pass file invalid at %d %d [%s]\n", j, i, p);
784  av_freep(&best_state);
785  return AVERROR_INVALIDDATA;
786  }
787  p = next;
788  }
789  for (i = 0; i < s->quant_table_count; i++)
790  for (j = 0; j < s->context_count[i]; j++) {
791  for (k = 0; k < 32; k++)
792  for (m = 0; m < 2; m++) {
793  s->rc_stat2[i][j][k][m] = strtol(p, &next, 0);
794  if (next == p) {
796  "2Pass file invalid at %d %d %d %d [%s]\n",
797  i, j, k, m, p);
798  av_freep(&best_state);
799  return AVERROR_INVALIDDATA;
800  }
801  p = next;
802  }
803  }
804  gob_count = strtol(p, &next, 0);
805  if (next == p || gob_count <= 0) {
806  av_log(avctx, AV_LOG_ERROR, "2Pass file invalid\n");
807  av_freep(&best_state);
808  return AVERROR_INVALIDDATA;
809  }
810  p = next;
811  while (*p == '\n' || *p == ' ')
812  p++;
813  if (p[0] == 0)
814  break;
815  }
816  if (s->ac == AC_RANGE_CUSTOM_TAB)
817  sort_stt(s, s->state_transition);
818 
819  find_best_state(best_state, s->state_transition);
820 
821  for (i = 0; i < s->quant_table_count; i++) {
822  for (k = 0; k < 32; k++) {
823  double a=0, b=0;
824  int jp = 0;
825  for (j = 0; j < s->context_count[i]; j++) {
826  double p = 128;
827  if (s->rc_stat2[i][j][k][0] + s->rc_stat2[i][j][k][1] > 200 && j || a+b > 200) {
828  if (a+b)
829  p = 256.0 * b / (a + b);
830  s->initial_states[i][jp][k] =
831  best_state[av_clip(round(p), 1, 255)][av_clip_uint8((a + b) / gob_count)];
832  for(jp++; jp<j; jp++)
833  s->initial_states[i][jp][k] = s->initial_states[i][jp-1][k];
834  a=b=0;
835  }
836  a += s->rc_stat2[i][j][k][0];
837  b += s->rc_stat2[i][j][k][1];
838  if (a+b) {
839  p = 256.0 * b / (a + b);
840  }
841  s->initial_states[i][j][k] =
842  best_state[av_clip(round(p), 1, 255)][av_clip_uint8((a + b) / gob_count)];
843  }
844  }
845  }
846  av_freep(&best_state);
847  }
848 
849  if (s->version > 1) {
850  int plane_count = 1 + 2*s->chroma_planes + s->transparency;
851  int max_h_slices = AV_CEIL_RSHIFT(avctx->width , s->chroma_h_shift);
852  int max_v_slices = AV_CEIL_RSHIFT(avctx->height, s->chroma_v_shift);
853  s->num_v_slices = (avctx->width > 352 || avctx->height > 288 || !avctx->slices) ? 2 : 1;
854 
855  s->num_v_slices = FFMIN(s->num_v_slices, max_v_slices);
856 
857  for (; s->num_v_slices < 32; s->num_v_slices++) {
858  for (s->num_h_slices = s->num_v_slices; s->num_h_slices < 2*s->num_v_slices; s->num_h_slices++) {
859  int maxw = (avctx->width + s->num_h_slices - 1) / s->num_h_slices;
860  int maxh = (avctx->height + s->num_v_slices - 1) / s->num_v_slices;
861  if (s->num_h_slices > max_h_slices || s->num_v_slices > max_v_slices)
862  continue;
863  if (maxw * maxh * (int64_t)(s->bits_per_raw_sample+1) * plane_count > 8<<24)
864  continue;
865  if (avctx->slices == s->num_h_slices * s->num_v_slices && avctx->slices <= MAX_SLICES || !avctx->slices)
866  goto slices_ok;
867  }
868  }
870  "Unsupported number %d of slices requested, please specify a "
871  "supported number with -slices (ex:4,6,9,12,16, ...)\n",
872  avctx->slices);
873  return AVERROR(ENOSYS);
874 slices_ok:
875  if ((ret = write_extradata(s)) < 0)
876  return ret;
877  }
878 
879  if ((ret = ff_ffv1_init_slice_contexts(s)) < 0)
880  return ret;
881  s->slice_count = s->max_slice_count;
882  if ((ret = ff_ffv1_init_slices_state(s)) < 0)
883  return ret;
884 
885 #define STATS_OUT_SIZE 1024 * 1024 * 6
888  if (!avctx->stats_out)
889  return AVERROR(ENOMEM);
890  for (i = 0; i < s->quant_table_count; i++)
891  for (j = 0; j < s->max_slice_count; j++) {
892  FFV1Context *sf = s->slice_context[j];
893  av_assert0(!sf->rc_stat2[i]);
894  sf->rc_stat2[i] = av_mallocz(s->context_count[i] *
895  sizeof(*sf->rc_stat2[i]));
896  if (!sf->rc_stat2[i])
897  return AVERROR(ENOMEM);
898  }
899  }
900 
901  return 0;
902 }
903 
905 {
906  RangeCoder *c = &fs->c;
907  uint8_t state[CONTEXT_SIZE];
908  int j;
909  memset(state, 128, sizeof(state));
910 
911  put_symbol(c, state, (fs->slice_x +1)*f->num_h_slices / f->width , 0);
912  put_symbol(c, state, (fs->slice_y +1)*f->num_v_slices / f->height , 0);
913  put_symbol(c, state, (fs->slice_width +1)*f->num_h_slices / f->width -1, 0);
914  put_symbol(c, state, (fs->slice_height+1)*f->num_v_slices / f->height-1, 0);
915  for (j=0; j<f->plane_count; j++) {
916  put_symbol(c, state, f->plane[j].quant_table_index, 0);
917  av_assert0(f->plane[j].quant_table_index == f->context_model);
918  }
919  if (!f->picture.f->interlaced_frame)
920  put_symbol(c, state, 3, 0);
921  else
922  put_symbol(c, state, 1 + !f->picture.f->top_field_first, 0);
923  put_symbol(c, state, f->picture.f->sample_aspect_ratio.num, 0);
924  put_symbol(c, state, f->picture.f->sample_aspect_ratio.den, 0);
925  if (f->version > 3) {
926  put_rac(c, state, fs->slice_coding_mode == 1);
927  if (fs->slice_coding_mode == 1)
929  put_symbol(c, state, fs->slice_coding_mode, 0);
930  if (fs->slice_coding_mode != 1) {
931  put_symbol(c, state, fs->slice_rct_by_coef, 0);
932  put_symbol(c, state, fs->slice_rct_ry_coef, 0);
933  }
934  }
935 }
936 
937 static void choose_rct_params(FFV1Context *fs, const uint8_t *src[3], const int stride[3], int w, int h)
938 {
939 #define NB_Y_COEFF 15
940  static const int rct_y_coeff[15][2] = {
941  {0, 0}, // 4G
942  {1, 1}, // R + 2G + B
943  {2, 2}, // 2R + 2B
944  {0, 2}, // 2G + 2B
945  {2, 0}, // 2R + 2G
946  {4, 0}, // 4R
947  {0, 4}, // 4B
948 
949  {0, 3}, // 1G + 3B
950  {3, 0}, // 3R + 1G
951  {3, 1}, // 3R + B
952  {1, 3}, // R + 3B
953  {1, 2}, // R + G + 2B
954  {2, 1}, // 2R + G + B
955  {0, 1}, // 3G + B
956  {1, 0}, // R + 3G
957  };
958 
959  int stat[NB_Y_COEFF] = {0};
960  int x, y, i, p, best;
961  int16_t *sample[3];
962  int lbd = fs->bits_per_raw_sample <= 8;
963 
964  for (y = 0; y < h; y++) {
965  int lastr=0, lastg=0, lastb=0;
966  for (p = 0; p < 3; p++)
967  sample[p] = fs->sample_buffer + p*w;
968 
969  for (x = 0; x < w; x++) {
970  int b, g, r;
971  int ab, ag, ar;
972  if (lbd) {
973  unsigned v = *((const uint32_t*)(src[0] + x*4 + stride[0]*y));
974  b = v & 0xFF;
975  g = (v >> 8) & 0xFF;
976  r = (v >> 16) & 0xFF;
977  } else {
978  b = *((const uint16_t*)(src[0] + x*2 + stride[0]*y));
979  g = *((const uint16_t*)(src[1] + x*2 + stride[1]*y));
980  r = *((const uint16_t*)(src[2] + x*2 + stride[2]*y));
981  }
982 
983  ar = r - lastr;
984  ag = g - lastg;
985  ab = b - lastb;
986  if (x && y) {
987  int bg = ag - sample[0][x];
988  int bb = ab - sample[1][x];
989  int br = ar - sample[2][x];
990 
991  br -= bg;
992  bb -= bg;
993 
994  for (i = 0; i<NB_Y_COEFF; i++) {
995  stat[i] += FFABS(bg + ((br*rct_y_coeff[i][0] + bb*rct_y_coeff[i][1])>>2));
996  }
997 
998  }
999  sample[0][x] = ag;
1000  sample[1][x] = ab;
1001  sample[2][x] = ar;
1002 
1003  lastr = r;
1004  lastg = g;
1005  lastb = b;
1006  }
1007  }
1008 
1009  best = 0;
1010  for (i=1; i<NB_Y_COEFF; i++) {
1011  if (stat[i] < stat[best])
1012  best = i;
1013  }
1014 
1015  fs->slice_rct_by_coef = rct_y_coeff[best][1];
1016  fs->slice_rct_ry_coef = rct_y_coeff[best][0];
1017 }
1018 
1019 static int encode_slice(AVCodecContext *c, void *arg)
1020 {
1021  FFV1Context *fs = *(void **)arg;
1022  FFV1Context *f = fs->avctx->priv_data;
1023  int width = fs->slice_width;
1024  int height = fs->slice_height;
1025  int x = fs->slice_x;
1026  int y = fs->slice_y;
1027  const AVFrame *const p = f->picture.f;
1028  const int ps = av_pix_fmt_desc_get(c->pix_fmt)->comp[0].step;
1029  int ret;
1030  RangeCoder c_bak = fs->c;
1031  const uint8_t *planes[4] = {p->data[0] + ps*x + y*p->linesize[0],
1032  p->data[1] ? p->data[1] + ps*x + y*p->linesize[1] : NULL,
1033  p->data[2] ? p->data[2] + ps*x + y*p->linesize[2] : NULL,
1034  p->data[3] ? p->data[3] + ps*x + y*p->linesize[3] : NULL};
1035 
1036  fs->slice_coding_mode = 0;
1037  if (f->version > 3) {
1039  } else {
1040  fs->slice_rct_by_coef = 1;
1041  fs->slice_rct_ry_coef = 1;
1042  }
1043 
1044 retry:
1045  if (f->key_frame)
1047  if (f->version > 2) {
1049  }
1050  if (fs->ac == AC_GOLOMB_RICE) {
1051  fs->ac_byte_count = f->version > 2 || (!x && !y) ? ff_rac_terminate(&fs->c, f->version > 2) : 0;
1052  init_put_bits(&fs->pb,
1053  fs->c.bytestream_start + fs->ac_byte_count,
1054  fs->c.bytestream_end - fs->c.bytestream_start - fs->ac_byte_count);
1055  }
1056 
1057  if (f->colorspace == 0 && c->pix_fmt != AV_PIX_FMT_YA8) {
1058  const int chroma_width = AV_CEIL_RSHIFT(width, f->chroma_h_shift);
1059  const int chroma_height = AV_CEIL_RSHIFT(height, f->chroma_v_shift);
1060  const int cx = x >> f->chroma_h_shift;
1061  const int cy = y >> f->chroma_v_shift;
1062 
1063  ret = encode_plane(fs, p->data[0] + ps*x + y*p->linesize[0], width, height, p->linesize[0], 0, 1);
1064 
1065  if (f->chroma_planes) {
1066  ret |= encode_plane(fs, p->data[1] + ps*cx+cy*p->linesize[1], chroma_width, chroma_height, p->linesize[1], 1, 1);
1067  ret |= encode_plane(fs, p->data[2] + ps*cx+cy*p->linesize[2], chroma_width, chroma_height, p->linesize[2], 1, 1);
1068  }
1069  if (fs->transparency)
1070  ret |= encode_plane(fs, p->data[3] + ps*x + y*p->linesize[3], width, height, p->linesize[3], 2, 1);
1071  } else if (c->pix_fmt == AV_PIX_FMT_YA8) {
1072  ret = encode_plane(fs, p->data[0] + ps*x + y*p->linesize[0], width, height, p->linesize[0], 0, 2);
1073  ret |= encode_plane(fs, p->data[0] + 1 + ps*x + y*p->linesize[0], width, height, p->linesize[0], 1, 2);
1074  } else if (f->use32bit) {
1075  ret = encode_rgb_frame32(fs, planes, width, height, p->linesize);
1076  } else {
1077  ret = encode_rgb_frame(fs, planes, width, height, p->linesize);
1078  }
1079  emms_c();
1080 
1081  if (ret < 0) {
1082  av_assert0(fs->slice_coding_mode == 0);
1083  if (fs->version < 4 || !fs->ac) {
1084  av_log(c, AV_LOG_ERROR, "Buffer too small\n");
1085  return ret;
1086  }
1087  av_log(c, AV_LOG_DEBUG, "Coding slice as PCM\n");
1088  fs->slice_coding_mode = 1;
1089  fs->c = c_bak;
1090  goto retry;
1091  }
1092 
1093  return 0;
1094 }
1095 
1097  const AVFrame *pict, int *got_packet)
1098 {
1100  RangeCoder *const c = &f->slice_context[0]->c;
1101  AVFrame *const p = f->picture.f;
1102  uint8_t keystate = 128;
1103  uint8_t *buf_p;
1104  int i, ret;
1105  int64_t maxsize = AV_INPUT_BUFFER_MIN_SIZE
1106  + avctx->width*avctx->height*37LL*4;
1107 
1108  if(!pict) {
1109  if (avctx->flags & AV_CODEC_FLAG_PASS1) {
1110  int j, k, m;
1111  char *p = avctx->stats_out;
1112  char *end = p + STATS_OUT_SIZE;
1113 
1114  memset(f->rc_stat, 0, sizeof(f->rc_stat));
1115  for (i = 0; i < f->quant_table_count; i++)
1116  memset(f->rc_stat2[i], 0, f->context_count[i] * sizeof(*f->rc_stat2[i]));
1117 
1118  av_assert0(f->slice_count == f->max_slice_count);
1119  for (j = 0; j < f->slice_count; j++) {
1120  FFV1Context *fs = f->slice_context[j];
1121  for (i = 0; i < 256; i++) {
1122  f->rc_stat[i][0] += fs->rc_stat[i][0];
1123  f->rc_stat[i][1] += fs->rc_stat[i][1];
1124  }
1125  for (i = 0; i < f->quant_table_count; i++) {
1126  for (k = 0; k < f->context_count[i]; k++)
1127  for (m = 0; m < 32; m++) {
1128  f->rc_stat2[i][k][m][0] += fs->rc_stat2[i][k][m][0];
1129  f->rc_stat2[i][k][m][1] += fs->rc_stat2[i][k][m][1];
1130  }
1131  }
1132  }
1133 
1134  for (j = 0; j < 256; j++) {
1135  snprintf(p, end - p, "%" PRIu64 " %" PRIu64 " ",
1136  f->rc_stat[j][0], f->rc_stat[j][1]);
1137  p += strlen(p);
1138  }
1139  snprintf(p, end - p, "\n");
1140 
1141  for (i = 0; i < f->quant_table_count; i++) {
1142  for (j = 0; j < f->context_count[i]; j++)
1143  for (m = 0; m < 32; m++) {
1144  snprintf(p, end - p, "%" PRIu64 " %" PRIu64 " ",
1145  f->rc_stat2[i][j][m][0], f->rc_stat2[i][j][m][1]);
1146  p += strlen(p);
1147  }
1148  }
1149  snprintf(p, end - p, "%d\n", f->gob_count);
1150  }
1151  return 0;
1152  }
1153 
1154  if (f->version > 3)
1155  maxsize = AV_INPUT_BUFFER_MIN_SIZE + avctx->width*avctx->height*3LL*4;
1156 
1157  if (maxsize > INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE - 32) {
1158  av_log(avctx, AV_LOG_WARNING, "Cannot allocate worst case packet size, the encoding could fail\n");
1159  maxsize = INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE - 32;
1160  }
1161 
1162  if ((ret = ff_alloc_packet2(avctx, pkt, maxsize, 0)) < 0)
1163  return ret;
1164 
1166  ff_build_rac_states(c, 0.05 * (1LL << 32), 256 - 8);
1167 
1168  av_frame_unref(p);
1169  if ((ret = av_frame_ref(p, pict)) < 0)
1170  return ret;
1171 
1172  if (avctx->gop_size == 0 || f->picture_number % avctx->gop_size == 0) {
1173  put_rac(c, &keystate, 1);
1174  f->key_frame = 1;
1175  f->gob_count++;
1176  write_header(f);
1177  } else {
1178  put_rac(c, &keystate, 0);
1179  f->key_frame = 0;
1180  }
1181 
1182  if (f->ac == AC_RANGE_CUSTOM_TAB) {
1183  int i;
1184  for (i = 1; i < 256; i++) {
1185  c->one_state[i] = f->state_transition[i];
1186  c->zero_state[256 - i] = 256 - c->one_state[i];
1187  }
1188  }
1189 
1190  for (i = 0; i < f->slice_count; i++) {
1191  FFV1Context *fs = f->slice_context[i];
1192  uint8_t *start = pkt->data + pkt->size * (int64_t)i / f->slice_count;
1193  int len = pkt->size / f->slice_count;
1194  if (i) {
1195  ff_init_range_encoder(&fs->c, start, len);
1196  } else {
1197  av_assert0(fs->c.bytestream_end >= fs->c.bytestream_start + len);
1198  av_assert0(fs->c.bytestream < fs->c.bytestream_start + len);
1199  fs->c.bytestream_end = fs->c.bytestream_start + len;
1200  }
1201  }
1202  avctx->execute(avctx, encode_slice, &f->slice_context[0], NULL,
1203  f->slice_count, sizeof(void *));
1204 
1205  buf_p = pkt->data;
1206  for (i = 0; i < f->slice_count; i++) {
1207  FFV1Context *fs = f->slice_context[i];
1208  int bytes;
1209 
1210  if (fs->ac != AC_GOLOMB_RICE) {
1211  bytes = ff_rac_terminate(&fs->c, 1);
1212  } else {
1213  flush_put_bits(&fs->pb); // FIXME: nicer padding
1214  bytes = fs->ac_byte_count + put_bytes_output(&fs->pb);
1215  }
1216  if (i > 0 || f->version > 2) {
1217  av_assert0(bytes < pkt->size / f->slice_count);
1218  memmove(buf_p, fs->c.bytestream_start, bytes);
1219  av_assert0(bytes < (1 << 24));
1220  AV_WB24(buf_p + bytes, bytes);
1221  bytes += 3;
1222  }
1223  if (f->ec) {
1224  unsigned v;
1225  buf_p[bytes++] = 0;
1226  v = av_crc(av_crc_get_table(AV_CRC_32_IEEE), 0, buf_p, bytes);
1227  AV_WL32(buf_p + bytes, v);
1228  bytes += 4;
1229  }
1230  buf_p += bytes;
1231  }
1232 
1234  avctx->stats_out[0] = '\0';
1235 
1236  f->picture_number++;
1237  pkt->size = buf_p - pkt->data;
1238  pkt->pts =
1239  pkt->dts = pict->pts;
1240  pkt->flags |= AV_PKT_FLAG_KEY * f->key_frame;
1241  *got_packet = 1;
1242 
1243  return 0;
1244 }
1245 
1247 {
1249  return 0;
1250 }
1251 
1252 #define OFFSET(x) offsetof(FFV1Context, x)
1253 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
1254 static const AVOption options[] = {
1255  { "slicecrc", "Protect slices with CRCs", OFFSET(ec), AV_OPT_TYPE_BOOL, { .i64 = -1 }, -1, 1, VE },
1256  { "coder", "Coder type", OFFSET(ac), AV_OPT_TYPE_INT,
1257  { .i64 = 0 }, -2, 2, VE, "coder" },
1258  { "rice", "Golomb rice", 0, AV_OPT_TYPE_CONST,
1259  { .i64 = AC_GOLOMB_RICE }, INT_MIN, INT_MAX, VE, "coder" },
1260  { "range_def", "Range with default table", 0, AV_OPT_TYPE_CONST,
1261  { .i64 = AC_RANGE_DEFAULT_TAB_FORCE }, INT_MIN, INT_MAX, VE, "coder" },
1262  { "range_tab", "Range with custom table", 0, AV_OPT_TYPE_CONST,
1263  { .i64 = AC_RANGE_CUSTOM_TAB }, INT_MIN, INT_MAX, VE, "coder" },
1264  { "ac", "Range with custom table (the ac option exists for compatibility and is deprecated)", 0, AV_OPT_TYPE_CONST,
1265  { .i64 = 1 }, INT_MIN, INT_MAX, VE, "coder" },
1266  { "context", "Context model", OFFSET(context_model), AV_OPT_TYPE_INT,
1267  { .i64 = 0 }, 0, 1, VE },
1268 
1269  { NULL }
1270 };
1271 
1272 static const AVClass ffv1_class = {
1273  .class_name = "ffv1 encoder",
1274  .item_name = av_default_item_name,
1275  .option = options,
1276  .version = LIBAVUTIL_VERSION_INT,
1277 };
1278 
1280  .name = "ffv1",
1281  .long_name = NULL_IF_CONFIG_SMALL("FFmpeg video codec #1"),
1282  .type = AVMEDIA_TYPE_VIDEO,
1283  .id = AV_CODEC_ID_FFV1,
1284  .priv_data_size = sizeof(FFV1Context),
1285  .init = encode_init,
1286  .encode2 = encode_frame,
1287  .close = encode_close,
1289  .pix_fmts = (const enum AVPixelFormat[]) {
1310 
1311  },
1312  .priv_class = &ffv1_class,
1314 };
encode_slice_header
static void encode_slice_header(FFV1Context *f, FFV1Context *fs)
Definition: ffv1enc.c:904
AV_PIX_FMT_YUVA422P16
#define AV_PIX_FMT_YUVA422P16
Definition: pixfmt.h:432
AV_PIX_FMT_GBRAP16
#define AV_PIX_FMT_GBRAP16
Definition: pixfmt.h:411
AVCodec
AVCodec.
Definition: codec.h:197
stride
int stride
Definition: mace.c:144
AV_LOG_WARNING
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:187
FF_CODEC_CAP_INIT_THREADSAFE
#define FF_CODEC_CAP_INIT_THREADSAFE
The codec does not modify any global variables in the init function, allowing to call the init functi...
Definition: internal.h:41
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
av_clip
#define av_clip
Definition: common.h:122
update_vlc_state
static void update_vlc_state(VlcState *const state, const int v)
Definition: ffv1.h:161
init
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:31
r
const char * r
Definition: vf_curves.c:116
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
AV_PIX_FMT_YA8
@ AV_PIX_FMT_YA8
8 bits gray, 8 bits alpha
Definition: pixfmt.h:133
AV_WL32
#define AV_WL32(p, v)
Definition: intreadwrite.h:426
FF_COMPLIANCE_EXPERIMENTAL
#define FF_COMPLIANCE_EXPERIMENTAL
Allow nonstandardized experimental things.
Definition: avcodec.h:1391
put_bytes_output
static int put_bytes_output(const PutBitContext *s)
Definition: put_bits.h:88
FFSWAP
#define FFSWAP(type, a, b)
Definition: common.h:108
av_pix_fmt_desc_get
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2541
FFV1Context::ec
int ec
Definition: ffv1.h:115
put_symbol_inline
static av_always_inline av_flatten void put_symbol_inline(RangeCoder *c, uint8_t *state, int v, int is_signed, uint64_t rc_stat[256][2], uint64_t rc_stat2[32][2])
Definition: ffv1enc.c:184
init_put_bits
static void init_put_bits(PutBitContext *s, uint8_t *buffer, int buffer_size)
Initialize the PutBitContext s.
Definition: put_bits.h:61
state
static struct @321 state
AV_PIX_FMT_YUVA422P9
#define AV_PIX_FMT_YUVA422P9
Definition: pixfmt.h:424
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:303
pixdesc.h
AVFrame::pts
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
Definition: frame.h:396
ff_ffv1_common_init
av_cold int ff_ffv1_common_init(AVCodecContext *avctx)
Definition: ffv1.c:41
AV_PIX_FMT_YUVA420P16
#define AV_PIX_FMT_YUVA420P16
Definition: pixfmt.h:431
w
uint8_t w
Definition: llviddspenc.c:39
internal.h
AC_RANGE_DEFAULT_TAB_FORCE
#define AC_RANGE_DEFAULT_TAB_FORCE
Definition: ffv1.h:58
AVPacket::data
uint8_t * data
Definition: packet.h:365
AV_PIX_FMT_YUVA420P10
#define AV_PIX_FMT_YUVA420P10
Definition: pixfmt.h:426
AVOption
AVOption.
Definition: opt.h:248
b
#define b
Definition: input.c:41
rangecoder.h
AVComponentDescriptor::step
int step
Number of elements between 2 horizontally consecutive pixels.
Definition: pixdesc.h:41
AV_PIX_FMT_YUV420P10
#define AV_PIX_FMT_YUV420P10
Definition: pixfmt.h:389
write_quant_tables
static void write_quant_tables(RangeCoder *c, int16_t quant_table[MAX_CONTEXT_INPUTS][256])
Definition: ffv1enc.c:326
contains_non_128
static int contains_non_128(uint8_t(*initial_state)[CONTEXT_SIZE], int nb_contexts)
Definition: ffv1enc.c:334
AV_PIX_FMT_YUV440P
@ AV_PIX_FMT_YUV440P
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
Definition: pixfmt.h:99
AC_RANGE_CUSTOM_TAB
#define AC_RANGE_CUSTOM_TAB
Definition: ffv1.h:57
AV_PIX_FMT_YUVA422P10
#define AV_PIX_FMT_YUVA422P10
Definition: pixfmt.h:427
ring_size
static int ring_size(RingBuffer *ring)
Definition: async.c:105
AV_PKT_FLAG_KEY
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
Definition: packet.h:396
put_symbol
static av_noinline void put_symbol(RangeCoder *c, uint8_t *state, int v, int is_signed)
Definition: ffv1enc.c:232
AV_PIX_FMT_GRAY9
#define AV_PIX_FMT_GRAY9
Definition: pixfmt.h:369
AVFrame::data
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:317
av_malloc
#define av_malloc(s)
Definition: tableprint_vlc.h:31
crc.h
golomb.h
exp golomb vlc stuff
ff_ffv1_init_slices_state
av_cold int ff_ffv1_init_slices_state(FFV1Context *f)
Definition: ffv1.c:105
AV_PIX_FMT_YUVA420P9
#define AV_PIX_FMT_YUVA420P9
Definition: pixfmt.h:423
quant11
static const int8_t quant11[256]
Definition: ffv1enc.c:100
encode_init
static av_cold int encode_init(AVCodecContext *avctx)
Definition: ffv1enc.c:514
AV_PIX_FMT_GBRP14
#define AV_PIX_FMT_GBRP14
Definition: pixfmt.h:407
ff_init_range_encoder
av_cold void ff_init_range_encoder(RangeCoder *c, uint8_t *buf, int buf_size)
Definition: rangecoder.c:42
AV_PIX_FMT_GBRP10
#define AV_PIX_FMT_GBRP10
Definition: pixfmt.h:405
AV_PIX_FMT_YUVA444P16
#define AV_PIX_FMT_YUVA444P16
Definition: pixfmt.h:433
choose_rct_params
static void choose_rct_params(FFV1Context *fs, const uint8_t *src[3], const int stride[3], int w, int h)
Definition: ffv1enc.c:937
AV_PIX_FMT_YUV422P9
#define AV_PIX_FMT_YUV422P9
Definition: pixfmt.h:387
encode_slice
static int encode_slice(AVCodecContext *c, void *arg)
Definition: ffv1enc.c:1019
AVCodecContext::flags
int flags
AV_CODEC_FLAG_*.
Definition: avcodec.h:581
av_pix_fmt_get_chroma_sub_sample
int av_pix_fmt_get_chroma_sub_sample(enum AVPixelFormat pix_fmt, int *h_shift, int *v_shift)
Utility function to access log2_chroma_w log2_chroma_h from the pixel format AVPixFmtDescriptor.
Definition: pixdesc.c:2569
av_noinline
#define av_noinline
Definition: attributes.h:72
NB_Y_COEFF
#define NB_Y_COEFF
CONTEXT_SIZE
#define CONTEXT_SIZE
Definition: ffv1.h:50
AV_PIX_FMT_GRAY16
#define AV_PIX_FMT_GRAY16
Definition: pixfmt.h:373
PlaneContext::context_count
int context_count
Definition: ffv1.h:70
AV_PIX_FMT_YUV444P10
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:392
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:181
av_cold
#define av_cold
Definition: attributes.h:90
AV_PIX_FMT_YUV422P16
#define AV_PIX_FMT_YUV422P16
Definition: pixfmt.h:401
AV_PIX_FMT_GBRAP10
#define AV_PIX_FMT_GBRAP10
Definition: pixfmt.h:409
ff_ffv1_clear_slice_state
void ff_ffv1_clear_slice_state(FFV1Context *f, FFV1Context *fs)
Definition: ffv1.c:173
width
#define width
s
#define s(width, name)
Definition: cbs_vp9.c:257
AVCodecContext::stats_in
char * stats_in
pass2 encoding statistics input buffer Concatenated stuff from stats_out of pass1 should be placed he...
Definition: avcodec.h:1350
AV_PIX_FMT_GBRAP12
#define AV_PIX_FMT_GBRAP12
Definition: pixfmt.h:410
AV_PIX_FMT_YUVA420P
@ AV_PIX_FMT_YUVA420P
planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
Definition: pixfmt.h:101
AV_PIX_FMT_YUV444P16
#define AV_PIX_FMT_YUV444P16
Definition: pixfmt.h:402
AV_CEIL_RSHIFT
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:58
g
const char * g
Definition: vf_curves.c:117
bits
uint8_t bits
Definition: vp3data.h:141
AC_RANGE_DEFAULT_TAB
#define AC_RANGE_DEFAULT_TAB
Definition: ffv1.h:56
av_assert0
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
pix_fmts
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:289
quant5
static const int8_t quant5[256]
Definition: ffv1enc.c:62
FFV1Context::rc_stat
uint64_t rc_stat[256][2]
Definition: ffv1.h:84
AVCodecContext::bits_per_raw_sample
int bits_per_raw_sample
Bits per sample/pixel of internal libavcodec pixel/sample format.
Definition: avcodec.h:1531
AV_PIX_FMT_YUV420P9
#define AV_PIX_FMT_YUV420P9
Definition: pixfmt.h:386
AV_LOG_DEBUG
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:202
AV_PIX_FMT_YUV420P16
#define AV_PIX_FMT_YUV420P16
Definition: pixfmt.h:400
write_extradata
static int write_extradata(FFV1Context *f)
Definition: ffv1enc.c:393
AV_PIX_FMT_FLAG_ALPHA
#define AV_PIX_FMT_FLAG_ALPHA
The pixel format has an alpha channel.
Definition: pixdesc.h:148
fold
static av_always_inline int fold(int diff, int bits)
Definition: ffv1.h:150
AV_INPUT_BUFFER_MIN_SIZE
#define AV_INPUT_BUFFER_MIN_SIZE
Definition: avcodec.h:199
FFV1Context::ac
int ac
1=range coder <-> 0=golomb rice
Definition: ffv1.h:100
AV_PIX_FMT_YUV420P
@ AV_PIX_FMT_YUV420P
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:66
FFV1Context::plane_count
int plane_count
Definition: ffv1.h:99
f
#define f(width, name)
Definition: cbs_vp9.c:255
PutBitContext
Definition: put_bits.h:49
sort_stt
static int sort_stt(FFV1Context *s, uint8_t stt[256])
Definition: ffv1enc.c:466
ver2_state
static const uint8_t ver2_state[256]
Definition: ffv1enc.c:119
arg
const char * arg
Definition: jacosubdec.c:67
FFABS
#define FFABS(a)
Absolute value, Note, INT_MIN / INT64_MIN result in undefined behavior as they are not representable ...
Definition: common.h:72
AV_PIX_FMT_GRAY10
#define AV_PIX_FMT_GRAY10
Definition: pixfmt.h:370
if
if(ret)
Definition: filter_design.txt:179
encode_frame
static int encode_frame(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *pict, int *got_packet)
Definition: ffv1enc.c:1096
encode_close
static av_cold int encode_close(AVCodecContext *avctx)
Definition: ffv1enc.c:1246
quant_table
static const int16_t quant_table[64]
Definition: intrax8.c:522
AV_PIX_FMT_GBRP16
#define AV_PIX_FMT_GBRP16
Definition: pixfmt.h:408
AV_PIX_FMT_RGBA64
#define AV_PIX_FMT_RGBA64
Definition: pixfmt.h:379
LIBAVUTIL_VERSION_INT
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:67
NULL
#define NULL
Definition: coverity.c:32
AC_GOLOMB_RICE
#define AC_GOLOMB_RICE
Definition: ffv1.h:55
fs
#define fs(width, name, subs,...)
Definition: cbs_vp9.c:259
ff_rac_terminate
int ff_rac_terminate(RangeCoder *c, int version)
Terminates the range coder.
Definition: rangecoder.c:109
av_default_item_name
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:235
src
#define src
Definition: vp8dsp.c:255
AV_PIX_FMT_YUV440P10
#define AV_PIX_FMT_YUV440P10
Definition: pixfmt.h:391
mathops.h
PlaneContext
Definition: ffv1.h:67
AV_PIX_FMT_YUV422P10
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:390
AV_PIX_FMT_GRAY8
@ AV_PIX_FMT_GRAY8
Y , 8bpp.
Definition: pixfmt.h:74
AV_PIX_FMT_GBRP9
#define AV_PIX_FMT_GBRP9
Definition: pixfmt.h:404
AVCodecContext::level
int level
level
Definition: avcodec.h:1757
c
Undefined Behavior In the C some operations are like signed integer dereferencing freed accessing outside allocated Undefined Behavior must not occur in a C it is not safe even if the output of undefined operations is unused The unsafety may seem nit picking but Optimizing compilers have in fact optimized code on the assumption that no undefined Behavior occurs Optimizing code based on wrong assumptions can and has in some cases lead to effects beyond the output of computations The signed integer overflow problem in speed critical code Code which is highly optimized and works with signed integers sometimes has the problem that often the output of the computation does not c
Definition: undefined.txt:32
for
for(j=16;j >0;--j)
Definition: h264pred_template.c:469
VlcState
Definition: ffv1.h:60
VE
#define VE
Definition: ffv1enc.c:1253
ff_dlog
#define ff_dlog(a,...)
Definition: tableprint_vlc.h:29
options
static const AVOption options[]
Definition: ffv1enc.c:1254
set_sr_golomb
static void set_sr_golomb(PutBitContext *pb, int i, int k, int limit, int esc_len)
write signed golomb rice code (ffv1).
Definition: golomb.h:724
AVCodecContext::stats_out
char * stats_out
pass1 encoding statistics output buffer
Definition: avcodec.h:1342
AV_CODEC_ID_FFV1
@ AV_CODEC_ID_FFV1
Definition: codec_id.h:82
AVPacket::size
int size
Definition: packet.h:366
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:696
av_frame_ref
int av_frame_ref(AVFrame *dst, const AVFrame *src)
Set up a new reference to the data described by the source frame.
Definition: frame.c:326
quant9_10bit
static const int8_t quant9_10bit[256]
Definition: ffv1enc.c:81
print
static void print(AVTreeNode *t, int depth)
Definition: tree.c:44
FFMAX
#define FFMAX(a, b)
Definition: common.h:103
AV_PIX_FMT_YUV422P12
#define AV_PIX_FMT_YUV422P12
Definition: pixfmt.h:394
ff_ffv1_close
av_cold int ff_ffv1_close(AVCodecContext *avctx)
Definition: ffv1.c:201
sample
#define sample
Definition: flacdsp_template.c:44
AV_PIX_FMT_RGB48
#define AV_PIX_FMT_RGB48
Definition: pixfmt.h:375
size
int size
Definition: twinvq_data.h:10344
ff_build_rac_states
void ff_build_rac_states(RangeCoder *c, int factor, int max_p)
Definition: rangecoder.c:68
STATS_OUT_SIZE
#define STATS_OUT_SIZE
AV_PIX_FMT_YUV444P12
#define AV_PIX_FMT_YUV444P12
Definition: pixfmt.h:396
AV_WB24
#define AV_WB24(p, d)
Definition: intreadwrite.h:450
AVPacket::dts
int64_t dts
Decompression timestamp in AVStream->time_base units; the time at which the packet is decompressed.
Definition: packet.h:364
AV_CODEC_FLAG_PASS2
#define AV_CODEC_FLAG_PASS2
Use internal 2pass ratecontrol in second pass mode.
Definition: avcodec.h:277
height
#define height
AV_PIX_FMT_RGB32
#define AV_PIX_FMT_RGB32
Definition: pixfmt.h:362
a
The reader does not expect b to be semantically here and if the code is changed by maybe adding a a division or other the signedness will almost certainly be mistaken To avoid this confusion a new type was SUINT is the C unsigned type but it holds a signed int to use the same example SUINT a
Definition: undefined.txt:41
FFMIN
#define FFMIN(a, b)
Definition: common.h:105
AV_PIX_FMT_YUVA444P
@ AV_PIX_FMT_YUVA444P
planar YUV 4:4:4 32bpp, (1 Cr & Cb sample per 1x1 Y & A samples)
Definition: pixfmt.h:167
av_crc_get_table
const AVCRC * av_crc_get_table(AVCRCId crc_id)
Get an initialized standard CRC table.
Definition: crc.c:374
AV_CODEC_CAP_SLICE_THREADS
#define AV_CODEC_CAP_SLICE_THREADS
Codec supports slice-based (or partition-based) multithreading.
Definition: codec.h:112
AV_PIX_FMT_YUVA444P10
#define AV_PIX_FMT_YUVA444P10
Definition: pixfmt.h:428
find_best_state
static void find_best_state(uint8_t best_state[256][256], const uint8_t one_state[256])
Definition: ffv1enc.c:138
attributes.h
AVPacket::flags
int flags
A combination of AV_PKT_FLAG values.
Definition: packet.h:371
PlaneContext::quant_table_index
int quant_table_index
Definition: ffv1.h:69
AV_LOG_INFO
#define AV_LOG_INFO
Standard information.
Definition: log.h:192
put_vlc_symbol
static void put_vlc_symbol(PutBitContext *pb, VlcState *const state, int v, int bits)
Definition: ffv1enc.c:239
av_assert2
#define av_assert2(cond)
assert() equivalent, that does lie in speed critical code.
Definition: avassert.h:64
FFV1Context::gob_count
int gob_count
Definition: ffv1.h:124
ffv1_class
static const AVClass ffv1_class
Definition: ffv1enc.c:1272
i
int i
Definition: input.c:407
AVPacket::pts
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
Definition: packet.h:358
code
and forward the test the status of outputs and forward it to the corresponding return FFERROR_NOT_READY If the filters stores internally one or a few frame for some it can consider them to be part of the FIFO and delay acknowledging a status change accordingly Example code
Definition: filter_design.txt:178
round
static av_always_inline av_const double round(double x)
Definition: libm.h:444
FF_CODEC_CAP_INIT_CLEANUP
#define FF_CODEC_CAP_INIT_CLEANUP
The codec allows calling the close function for deallocation even if the init function returned a fai...
Definition: internal.h:49
av_flatten
#define av_flatten
Definition: attributes.h:96
av_malloc_array
#define av_malloc_array(a, b)
Definition: tableprint_vlc.h:32
AV_PIX_FMT_GBRP12
#define AV_PIX_FMT_GBRP12
Definition: pixfmt.h:406
av_always_inline
#define av_always_inline
Definition: attributes.h:49
ffv1.h
av_frame_unref
void av_frame_unref(AVFrame *frame)
Unreference all the buffers referenced by frame and reset the frame fields.
Definition: frame.c:436
av_mallocz
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
Definition: mem.c:243
AVCodec::name
const char * name
Name of the codec implementation.
Definition: codec.h:204
len
int len
Definition: vorbis_enc_data.h:452
AV_CRC_32_IEEE
@ AV_CRC_32_IEEE
Definition: crc.h:53
AVCodecContext::height
int height
Definition: avcodec.h:674
AVCodecContext::pix_fmt
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:711
write_quant_table
static void write_quant_table(RangeCoder *c, int16_t *quant_table)
Definition: ffv1enc.c:311
AV_PIX_FMT_YUV444P9
#define AV_PIX_FMT_YUV444P9
Definition: pixfmt.h:388
MAX_CONTEXT_INPUTS
#define MAX_CONTEXT_INPUTS
Definition: ffv1.h:53
log2
#define log2(x)
Definition: libm.h:404
avcodec.h
FFV1Context::avctx
AVCodecContext * avctx
Definition: ffv1.h:80
encode_plane
static int encode_plane(FFV1Context *s, uint8_t *src, int w, int h, int stride, int plane_index, int pixel_stride)
Definition: ffv1enc.c:273
ret
ret
Definition: filter_design.txt:187
pred
static const float pred[4]
Definition: siprdata.h:259
AVClass::class_name
const char * class_name
The name of the class; usually it is the same name as the context structure type to which the AVClass...
Definition: log.h:72
AV_PIX_FMT_0RGB32
#define AV_PIX_FMT_0RGB32
Definition: pixfmt.h:366
quant5_10bit
static const int8_t quant5_10bit[256]
Definition: ffv1enc.c:43
AVCodecContext::strict_std_compliance
int strict_std_compliance
strictly follow the standard (MPEG-4, ...).
Definition: avcodec.h:1386
AV_PIX_FMT_YUVA444P9
#define AV_PIX_FMT_YUVA444P9
Definition: pixfmt.h:425
AV_PIX_FMT_YUV420P12
#define AV_PIX_FMT_YUV420P12
Definition: pixfmt.h:393
AV_INPUT_BUFFER_PADDING_SIZE
#define AV_INPUT_BUFFER_PADDING_SIZE
Definition: avcodec.h:192
put_rac
#define put_rac(C, S, B)
AV_PIX_FMT_YUV422P14
#define AV_PIX_FMT_YUV422P14
Definition: pixfmt.h:398
FFV1Context::rc_stat2
uint64_t(*[MAX_QUANT_TABLES] rc_stat2)[32][2]
Definition: ffv1.h:85
ff_ffv1_allocate_initial_states
int ff_ffv1_allocate_initial_states(FFV1Context *f)
Definition: ffv1.c:158
AVCodecContext
main external API structure.
Definition: avcodec.h:501
MAX_SLICES
#define MAX_SLICES
Definition: dxva2_hevc.c:29
AVCodecContext::execute
int(* execute)(struct AVCodecContext *c, int(*func)(struct AVCodecContext *c2, void *arg), void *arg2, int *ret, int count, int size)
The codec may call this to execute several independent things.
Definition: avcodec.h:1597
FFV1Context::context_model
int context_model
Definition: ffv1.h:119
FFV1Context::pb
PutBitContext pb
Definition: ffv1.h:83
av_crc
uint32_t av_crc(const AVCRC *ctx, uint32_t crc, const uint8_t *buffer, size_t length)
Calculate the CRC of a block.
Definition: crc.c:392
ff_ffv1_encoder
const AVCodec ff_ffv1_encoder
Definition: ffv1enc.c:1279
AV_PIX_FMT_NONE
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:65
OFFSET
#define OFFSET(x)
Definition: ffv1enc.c:1252
AV_OPT_TYPE_INT
@ AV_OPT_TYPE_INT
Definition: opt.h:225
AVPixFmtDescriptor::comp
AVComponentDescriptor comp[4]
Parameters that describe how pixels are packed.
Definition: pixdesc.h:106
AV_CODEC_CAP_DELAY
#define AV_CODEC_CAP_DELAY
Encoder or decoder requires flushing with NULL input at the end in order to give the complete and cor...
Definition: codec.h:77
COST2
#define COST2(old, new)
av_clip_uint8
#define av_clip_uint8
Definition: common.h:128
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
ffv1enc_template.c
planes
static const struct @322 planes[]
desc
const char * desc
Definition: libsvtav1.c:79
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
AV_PIX_FMT_YUV422P
@ AV_PIX_FMT_YUV422P
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:70
flush_put_bits
static void flush_put_bits(PutBitContext *s)
Pad the end of the output stream with zeros.
Definition: put_bits.h:142
AVPixFmtDescriptor
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:70
FFV1Context
Definition: ffv1.h:78
AVCodecContext::slices
int slices
Number of slices.
Definition: avcodec.h:1089
AVPacket
This structure stores compressed data.
Definition: packet.h:342
AVCodecContext::priv_data
void * priv_data
Definition: avcodec.h:528
AV_OPT_TYPE_BOOL
@ AV_OPT_TYPE_BOOL
Definition: opt.h:242
av_freep
#define av_freep(p)
Definition: tableprint_vlc.h:35
AV_PIX_FMT_YUV411P
@ AV_PIX_FMT_YUV411P
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
Definition: pixfmt.h:73
AVCodecContext::width
int width
picture width / height.
Definition: avcodec.h:674
ff_ffv1_init_slice_contexts
av_cold int ff_ffv1_init_slice_contexts(FFV1Context *f)
Definition: ffv1.c:116
imgutils.h
AVFrame::linesize
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:334
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
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:28
AVERROR_INVALIDDATA
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
AV_PIX_FMT_YUV440P12
#define AV_PIX_FMT_YUV440P12
Definition: pixfmt.h:395
h
h
Definition: vp9dsp_template.c:2038
RangeCoder
Definition: mss3.c:61
AV_PIX_FMT_YUV444P14
#define AV_PIX_FMT_YUV444P14
Definition: pixfmt.h:399
write_header
static void write_header(FFV1Context *f)
Definition: ffv1enc.c:346
AV_PIX_FMT_GRAY12
#define AV_PIX_FMT_GRAY12
Definition: pixfmt.h:371
PlaneContext::quant_table
int16_t quant_table[MAX_CONTEXT_INPUTS][256]
Definition: ffv1.h:68
ff_alloc_packet2
int ff_alloc_packet2(AVCodecContext *avctx, AVPacket *avpkt, int64_t size, int64_t min_size)
Check AVPacket size and/or allocate data.
Definition: encode.c:33
put_bits.h
AV_OPT_TYPE_CONST
@ AV_OPT_TYPE_CONST
Definition: opt.h:234
snprintf
#define snprintf
Definition: snprintf.h:34
av_log2
int av_log2(unsigned v)
Definition: intmath.c:26
AV_PIX_FMT_YUVA422P
@ AV_PIX_FMT_YUVA422P
planar YUV 4:2:2 24bpp, (1 Cr & Cb sample per 2x1 Y & A samples)
Definition: pixfmt.h:166
AV_PIX_FMT_YUV420P14
#define AV_PIX_FMT_YUV420P14
Definition: pixfmt.h:397
AV_CODEC_FLAG_PASS1
#define AV_CODEC_FLAG_PASS1
Use internal 2pass ratecontrol in first pass mode.
Definition: avcodec.h:273