FFmpeg  3.3.9
ffv1enc.c
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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 #include "libavutil/timer.h"
35 
36 #include "avcodec.h"
37 #include "internal.h"
38 #include "put_bits.h"
39 #include "rangecoder.h"
40 #include "golomb.h"
41 #include "mathops.h"
42 #include "ffv1.h"
43 
44 static const int8_t quant5_10bit[256] = {
45  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
48  1, 1, 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, -2,
57  -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -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, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
60  -1, -1, -1, -1, -1, -1, -0, -0, -0, -0, -0, -0, -0, -0, -0, -0,
61 };
62 
63 static const int8_t quant5[256] = {
64  0, 1, 1, 1, 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, -2, -2, -2,
79  -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -1, -1, -1,
80 };
81 
82 static const int8_t quant9_10bit[256] = {
83  0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2,
84  2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3,
85  3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
86  3, 3, 3, 3, 3, 3, 3, 3, 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, -4, -4, -4, -4, -4, -4, -4,
95  -4, -4, -4, -4, -4, -4, -4, -4, -4, -3, -3, -3, -3, -3, -3, -3,
96  -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3,
97  -3, -3, -3, -3, -3, -3, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2,
98  -2, -2, -2, -2, -1, -1, -1, -1, -1, -1, -1, -1, -0, -0, -0, -0,
99 };
100 
101 static const int8_t quant11[256] = {
102  0, 1, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4,
103  4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
104  4, 4, 4, 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, -5, -5,
115  -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -4, -4,
116  -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4,
117  -4, -4, -4, -4, -4, -3, -3, -3, -3, -3, -3, -3, -2, -2, -2, -1,
118 };
119 
120 static const uint8_t ver2_state[256] = {
121  0, 10, 10, 10, 10, 16, 16, 16, 28, 16, 16, 29, 42, 49, 20, 49,
122  59, 25, 26, 26, 27, 31, 33, 33, 33, 34, 34, 37, 67, 38, 39, 39,
123  40, 40, 41, 79, 43, 44, 45, 45, 48, 48, 64, 50, 51, 52, 88, 52,
124  53, 74, 55, 57, 58, 58, 74, 60, 101, 61, 62, 84, 66, 66, 68, 69,
125  87, 82, 71, 97, 73, 73, 82, 75, 111, 77, 94, 78, 87, 81, 83, 97,
126  85, 83, 94, 86, 99, 89, 90, 99, 111, 92, 93, 134, 95, 98, 105, 98,
127  105, 110, 102, 108, 102, 118, 103, 106, 106, 113, 109, 112, 114, 112, 116, 125,
128  115, 116, 117, 117, 126, 119, 125, 121, 121, 123, 145, 124, 126, 131, 127, 129,
129  165, 130, 132, 138, 133, 135, 145, 136, 137, 139, 146, 141, 143, 142, 144, 148,
130  147, 155, 151, 149, 151, 150, 152, 157, 153, 154, 156, 168, 158, 162, 161, 160,
131  172, 163, 169, 164, 166, 184, 167, 170, 177, 174, 171, 173, 182, 176, 180, 178,
132  175, 189, 179, 181, 186, 183, 192, 185, 200, 187, 191, 188, 190, 197, 193, 196,
133  197, 194, 195, 196, 198, 202, 199, 201, 210, 203, 207, 204, 205, 206, 208, 214,
134  209, 211, 221, 212, 213, 215, 224, 216, 217, 218, 219, 220, 222, 228, 223, 225,
135  226, 224, 227, 229, 240, 230, 231, 232, 233, 234, 235, 236, 238, 239, 237, 242,
136  241, 243, 242, 244, 245, 246, 247, 248, 249, 250, 251, 252, 252, 253, 254, 255,
137 };
138 
139 static void find_best_state(uint8_t best_state[256][256],
140  const uint8_t one_state[256])
141 {
142  int i, j, k, m;
143  double l2tab[256];
144 
145  for (i = 1; i < 256; i++)
146  l2tab[i] = log2(i / 256.0);
147 
148  for (i = 0; i < 256; i++) {
149  double best_len[256];
150  double p = i / 256.0;
151 
152  for (j = 0; j < 256; j++)
153  best_len[j] = 1 << 30;
154 
155  for (j = FFMAX(i - 10, 1); j < FFMIN(i + 11, 256); j++) {
156  double occ[256] = { 0 };
157  double len = 0;
158  occ[j] = 1.0;
159 
160  if (!one_state[j])
161  continue;
162 
163  for (k = 0; k < 256; k++) {
164  double newocc[256] = { 0 };
165  for (m = 1; m < 256; m++)
166  if (occ[m]) {
167  len -=occ[m]*( p *l2tab[ m]
168  + (1-p)*l2tab[256-m]);
169  }
170  if (len < best_len[k]) {
171  best_len[k] = len;
172  best_state[i][k] = j;
173  }
174  for (m = 1; m < 256; m++)
175  if (occ[m]) {
176  newocc[ one_state[ m]] += occ[m] * p;
177  newocc[256 - one_state[256 - m]] += occ[m] * (1 - p);
178  }
179  memcpy(occ, newocc, sizeof(occ));
180  }
181  }
182  }
183 }
184 
186  uint8_t *state, int v,
187  int is_signed,
188  uint64_t rc_stat[256][2],
189  uint64_t rc_stat2[32][2])
190 {
191  int i;
192 
193 #define put_rac(C, S, B) \
194  do { \
195  if (rc_stat) { \
196  rc_stat[*(S)][B]++; \
197  rc_stat2[(S) - state][B]++; \
198  } \
199  put_rac(C, S, B); \
200  } while (0)
201 
202  if (v) {
203  const int a = FFABS(v);
204  const int e = av_log2(a);
205  put_rac(c, state + 0, 0);
206  if (e <= 9) {
207  for (i = 0; i < e; i++)
208  put_rac(c, state + 1 + i, 1); // 1..10
209  put_rac(c, state + 1 + i, 0);
210 
211  for (i = e - 1; i >= 0; i--)
212  put_rac(c, state + 22 + i, (a >> i) & 1); // 22..31
213 
214  if (is_signed)
215  put_rac(c, state + 11 + e, v < 0); // 11..21
216  } else {
217  for (i = 0; i < e; i++)
218  put_rac(c, state + 1 + FFMIN(i, 9), 1); // 1..10
219  put_rac(c, state + 1 + 9, 0);
220 
221  for (i = e - 1; i >= 0; i--)
222  put_rac(c, state + 22 + FFMIN(i, 9), (a >> i) & 1); // 22..31
223 
224  if (is_signed)
225  put_rac(c, state + 11 + 10, v < 0); // 11..21
226  }
227  } else {
228  put_rac(c, state + 0, 1);
229  }
230 #undef put_rac
231 }
232 
234  int v, int is_signed)
235 {
236  put_symbol_inline(c, state, v, is_signed, NULL, NULL);
237 }
238 
239 
240 static inline void put_vlc_symbol(PutBitContext *pb, VlcState *const state,
241  int v, int bits)
242 {
243  int i, k, code;
244  v = fold(v - state->bias, bits);
245 
246  i = state->count;
247  k = 0;
248  while (i < state->error_sum) { // FIXME: optimize
249  k++;
250  i += i;
251  }
252 
253  av_assert2(k <= 13);
254 
255  code = v ^ ((2 * state->drift + state->count) >> 31);
256 
257  ff_dlog(NULL, "v:%d/%d bias:%d error:%d drift:%d count:%d k:%d\n", v, code,
258  state->bias, state->error_sum, state->drift, state->count, k);
259  set_sr_golomb(pb, code, k, 12, bits);
260 
261  update_vlc_state(state, v);
262 }
263 
264 #define TYPE int16_t
265 #define RENAME(name) name
266 #include "ffv1enc_template.c"
267 #undef TYPE
268 #undef RENAME
269 
270 #define TYPE int32_t
271 #define RENAME(name) name ## 32
272 #include "ffv1enc_template.c"
273 
274 static int encode_plane(FFV1Context *s, uint8_t *src, int w, int h,
275  int stride, int plane_index, int pixel_stride)
276 {
277  int x, y, i, ret;
278  const int ring_size = s->context_model ? 3 : 2;
279  int16_t *sample[3];
280  s->run_index = 0;
281 
282  memset(s->sample_buffer, 0, ring_size * (w + 6) * sizeof(*s->sample_buffer));
283 
284  for (y = 0; y < h; y++) {
285  for (i = 0; i < ring_size; i++)
286  sample[i] = s->sample_buffer + (w + 6) * ((h + i - y) % ring_size) + 3;
287 
288  sample[0][-1]= sample[1][0 ];
289  sample[1][ w]= sample[1][w-1];
290 // { START_TIMER
291  if (s->bits_per_raw_sample <= 8) {
292  for (x = 0; x < w; x++)
293  sample[0][x] = src[x * pixel_stride + stride * y];
294  if((ret = encode_line(s, w, sample, plane_index, 8)) < 0)
295  return ret;
296  } else {
297  if (s->packed_at_lsb) {
298  for (x = 0; x < w; x++) {
299  sample[0][x] = ((uint16_t*)(src + stride*y))[x];
300  }
301  } else {
302  for (x = 0; x < w; x++) {
303  sample[0][x] = ((uint16_t*)(src + stride*y))[x] >> (16 - s->bits_per_raw_sample);
304  }
305  }
306  if((ret = encode_line(s, w, sample, plane_index, s->bits_per_raw_sample)) < 0)
307  return ret;
308  }
309 // STOP_TIMER("encode line") }
310  }
311  return 0;
312 }
313 
314 static void write_quant_table(RangeCoder *c, int16_t *quant_table)
315 {
316  int last = 0;
317  int i;
319  memset(state, 128, sizeof(state));
320 
321  for (i = 1; i < 128; i++)
322  if (quant_table[i] != quant_table[i - 1]) {
323  put_symbol(c, state, i - last - 1, 0);
324  last = i;
325  }
326  put_symbol(c, state, i - last - 1, 0);
327 }
328 
330  int16_t quant_table[MAX_CONTEXT_INPUTS][256])
331 {
332  int i;
333  for (i = 0; i < 5; i++)
335 }
336 
337 static void write_header(FFV1Context *f)
338 {
340  int i, j;
341  RangeCoder *const c = &f->slice_context[0]->c;
342 
343  memset(state, 128, sizeof(state));
344 
345  if (f->version < 2) {
346  put_symbol(c, state, f->version, 0);
347  put_symbol(c, state, f->ac, 0);
348  if (f->ac == AC_RANGE_CUSTOM_TAB) {
349  for (i = 1; i < 256; i++)
350  put_symbol(c, state,
351  f->state_transition[i] - c->one_state[i], 1);
352  }
353  put_symbol(c, state, f->colorspace, 0); //YUV cs type
354  if (f->version > 0)
355  put_symbol(c, state, f->bits_per_raw_sample, 0);
356  put_rac(c, state, f->chroma_planes);
357  put_symbol(c, state, f->chroma_h_shift, 0);
358  put_symbol(c, state, f->chroma_v_shift, 0);
359  put_rac(c, state, f->transparency);
360 
362  } else if (f->version < 3) {
363  put_symbol(c, state, f->slice_count, 0);
364  for (i = 0; i < f->slice_count; i++) {
365  FFV1Context *fs = f->slice_context[i];
366  put_symbol(c, state,
367  (fs->slice_x + 1) * f->num_h_slices / f->width, 0);
368  put_symbol(c, state,
369  (fs->slice_y + 1) * f->num_v_slices / f->height, 0);
370  put_symbol(c, state,
371  (fs->slice_width + 1) * f->num_h_slices / f->width - 1,
372  0);
373  put_symbol(c, state,
374  (fs->slice_height + 1) * f->num_v_slices / f->height - 1,
375  0);
376  for (j = 0; j < f->plane_count; j++) {
377  put_symbol(c, state, f->plane[j].quant_table_index, 0);
379  }
380  }
381  }
382 }
383 
385 {
386  RangeCoder *const c = &f->c;
388  int i, j, k;
389  uint8_t state2[32][CONTEXT_SIZE];
390  unsigned v;
391 
392  memset(state2, 128, sizeof(state2));
393  memset(state, 128, sizeof(state));
394 
395  f->avctx->extradata_size = 10000 + 4 +
396  (11 * 11 * 5 * 5 * 5 + 11 * 11 * 11) * 32;
398  if (!f->avctx->extradata)
399  return AVERROR(ENOMEM);
401  ff_build_rac_states(c, 0.05 * (1LL << 32), 256 - 8);
402 
403  put_symbol(c, state, f->version, 0);
404  if (f->version > 2) {
405  if (f->version == 3) {
406  f->micro_version = 4;
407  } else if (f->version == 4)
408  f->micro_version = 2;
409  put_symbol(c, state, f->micro_version, 0);
410  }
411 
412  put_symbol(c, state, f->ac, 0);
413  if (f->ac == AC_RANGE_CUSTOM_TAB)
414  for (i = 1; i < 256; i++)
415  put_symbol(c, state, f->state_transition[i] - c->one_state[i], 1);
416 
417  put_symbol(c, state, f->colorspace, 0); // YUV cs type
418  put_symbol(c, state, f->bits_per_raw_sample, 0);
419  put_rac(c, state, f->chroma_planes);
420  put_symbol(c, state, f->chroma_h_shift, 0);
421  put_symbol(c, state, f->chroma_v_shift, 0);
422  put_rac(c, state, f->transparency);
423  put_symbol(c, state, f->num_h_slices - 1, 0);
424  put_symbol(c, state, f->num_v_slices - 1, 0);
425 
426  put_symbol(c, state, f->quant_table_count, 0);
427  for (i = 0; i < f->quant_table_count; i++)
429 
430  for (i = 0; i < f->quant_table_count; i++) {
431  for (j = 0; j < f->context_count[i] * CONTEXT_SIZE; j++)
432  if (f->initial_states[i] && f->initial_states[i][0][j] != 128)
433  break;
434  if (j < f->context_count[i] * CONTEXT_SIZE) {
435  put_rac(c, state, 1);
436  for (j = 0; j < f->context_count[i]; j++)
437  for (k = 0; k < CONTEXT_SIZE; k++) {
438  int pred = j ? f->initial_states[i][j - 1][k] : 128;
439  put_symbol(c, state2[k],
440  (int8_t)(f->initial_states[i][j][k] - pred), 1);
441  }
442  } else {
443  put_rac(c, state, 0);
444  }
445  }
446 
447  if (f->version > 2) {
448  put_symbol(c, state, f->ec, 0);
449  put_symbol(c, state, f->intra = (f->avctx->gop_size < 2), 0);
450  }
451 
455  f->avctx->extradata_size += 4;
456 
457  return 0;
458 }
459 
460 static int sort_stt(FFV1Context *s, uint8_t stt[256])
461 {
462  int i, i2, changed, print = 0;
463 
464  do {
465  changed = 0;
466  for (i = 12; i < 244; i++) {
467  for (i2 = i + 1; i2 < 245 && i2 < i + 4; i2++) {
468 
469 #define COST(old, new) \
470  s->rc_stat[old][0] * -log2((256 - (new)) / 256.0) + \
471  s->rc_stat[old][1] * -log2((new) / 256.0)
472 
473 #define COST2(old, new) \
474  COST(old, new) + COST(256 - (old), 256 - (new))
475 
476  double size0 = COST2(i, i) + COST2(i2, i2);
477  double sizeX = COST2(i, i2) + COST2(i2, i);
478  if (size0 - sizeX > size0*(1e-14) && i != 128 && i2 != 128) {
479  int j;
480  FFSWAP(int, stt[i], stt[i2]);
481  FFSWAP(int, s->rc_stat[i][0], s->rc_stat[i2][0]);
482  FFSWAP(int, s->rc_stat[i][1], s->rc_stat[i2][1]);
483  if (i != 256 - i2) {
484  FFSWAP(int, stt[256 - i], stt[256 - i2]);
485  FFSWAP(int, s->rc_stat[256 - i][0], s->rc_stat[256 - i2][0]);
486  FFSWAP(int, s->rc_stat[256 - i][1], s->rc_stat[256 - i2][1]);
487  }
488  for (j = 1; j < 256; j++) {
489  if (stt[j] == i)
490  stt[j] = i2;
491  else if (stt[j] == i2)
492  stt[j] = i;
493  if (i != 256 - i2) {
494  if (stt[256 - j] == 256 - i)
495  stt[256 - j] = 256 - i2;
496  else if (stt[256 - j] == 256 - i2)
497  stt[256 - j] = 256 - i;
498  }
499  }
500  print = changed = 1;
501  }
502  }
503  }
504  } while (changed);
505  return print;
506 }
507 
509 {
510  FFV1Context *s = avctx->priv_data;
512  int i, j, k, m, ret;
513 
514  if ((ret = ff_ffv1_common_init(avctx)) < 0)
515  return ret;
516 
517  s->version = 0;
518 
519  if ((avctx->flags & (AV_CODEC_FLAG_PASS1 | AV_CODEC_FLAG_PASS2)) ||
520  avctx->slices > 1)
521  s->version = FFMAX(s->version, 2);
522 
523  // Unspecified level & slices, we choose version 1.2+ to ensure multithreaded decodability
524  if (avctx->slices == 0 && avctx->level < 0 && avctx->width * avctx->height > 720*576)
525  s->version = FFMAX(s->version, 2);
526 
527  if (avctx->level <= 0 && s->version == 2) {
528  s->version = 3;
529  }
530  if (avctx->level >= 0 && avctx->level <= 4) {
531  if (avctx->level < s->version) {
532  av_log(avctx, AV_LOG_ERROR, "Version %d needed for requested features but %d requested\n", s->version, avctx->level);
533  return AVERROR(EINVAL);
534  }
535  s->version = avctx->level;
536  }
537 
538  if (s->ec < 0) {
539  s->ec = (s->version >= 3);
540  }
541 
542  // CRC requires version 3+
543  if (s->ec)
544  s->version = FFMAX(s->version, 3);
545 
546  if ((s->version == 2 || s->version>3) && avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
547  av_log(avctx, AV_LOG_ERROR, "Version 2 needed for requested features but version 2 is experimental and not enabled\n");
548  return AVERROR_INVALIDDATA;
549  }
550 
551 #if FF_API_CODER_TYPE
553  if (avctx->coder_type != -1)
554  s->ac = avctx->coder_type > 0 ? AC_RANGE_CUSTOM_TAB : AC_GOLOMB_RICE;
555  else
557 #endif
558  if (s->ac == 1) // Compatbility with common command line usage
559  s->ac = AC_RANGE_CUSTOM_TAB;
560  else if (s->ac == AC_RANGE_DEFAULT_TAB_FORCE)
562 
563  s->plane_count = 3;
564  switch(avctx->pix_fmt) {
565  case AV_PIX_FMT_YUV444P9:
566  case AV_PIX_FMT_YUV422P9:
567  case AV_PIX_FMT_YUV420P9:
571  if (!avctx->bits_per_raw_sample)
572  s->bits_per_raw_sample = 9;
573  case AV_PIX_FMT_GRAY10:
580  if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample)
581  s->bits_per_raw_sample = 10;
582  case AV_PIX_FMT_GRAY12:
586  s->packed_at_lsb = 1;
587  if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample)
588  s->bits_per_raw_sample = 12;
589  case AV_PIX_FMT_GRAY16:
596  if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample) {
597  s->bits_per_raw_sample = 16;
598  } else if (!s->bits_per_raw_sample) {
600  }
601  if (s->bits_per_raw_sample <= 8) {
602  av_log(avctx, AV_LOG_ERROR, "bits_per_raw_sample invalid\n");
603  return AVERROR_INVALIDDATA;
604  }
605  s->version = FFMAX(s->version, 1);
606  case AV_PIX_FMT_GRAY8:
607  case AV_PIX_FMT_YA8:
608  case AV_PIX_FMT_YUV444P:
609  case AV_PIX_FMT_YUV440P:
610  case AV_PIX_FMT_YUV422P:
611  case AV_PIX_FMT_YUV420P:
612  case AV_PIX_FMT_YUV411P:
613  case AV_PIX_FMT_YUV410P:
614  case AV_PIX_FMT_YUVA444P:
615  case AV_PIX_FMT_YUVA422P:
616  case AV_PIX_FMT_YUVA420P:
617  s->chroma_planes = desc->nb_components < 3 ? 0 : 1;
618  s->colorspace = 0;
619  s->transparency = desc->nb_components == 4 || desc->nb_components == 2;
620  if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample)
621  s->bits_per_raw_sample = 8;
622  else if (!s->bits_per_raw_sample)
623  s->bits_per_raw_sample = 8;
624  break;
625  case AV_PIX_FMT_RGB32:
626  s->colorspace = 1;
627  s->transparency = 1;
628  s->chroma_planes = 1;
629  s->bits_per_raw_sample = 8;
630  break;
631  case AV_PIX_FMT_RGB48:
632  s->colorspace = 1;
633  s->chroma_planes = 1;
634  s->bits_per_raw_sample = 16;
635  s->use32bit = 1;
636  s->version = FFMAX(s->version, 1);
638  av_log(avctx, AV_LOG_ERROR, "16bit RGB is experimental and under development, only use it for experiments\n");
639  return AVERROR_INVALIDDATA;
640  }
641  break;
642  case AV_PIX_FMT_0RGB32:
643  s->colorspace = 1;
644  s->chroma_planes = 1;
645  s->bits_per_raw_sample = 8;
646  break;
647  case AV_PIX_FMT_GBRP9:
648  if (!avctx->bits_per_raw_sample)
649  s->bits_per_raw_sample = 9;
650  case AV_PIX_FMT_GBRP10:
651  if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample)
652  s->bits_per_raw_sample = 10;
653  case AV_PIX_FMT_GBRP12:
654  if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample)
655  s->bits_per_raw_sample = 12;
656  case AV_PIX_FMT_GBRP14:
657  if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample)
658  s->bits_per_raw_sample = 14;
659  case AV_PIX_FMT_GBRP16:
660  if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample)
661  s->bits_per_raw_sample = 16;
662  else if (!s->bits_per_raw_sample)
664  s->colorspace = 1;
665  s->chroma_planes = 1;
666  if (s->bits_per_raw_sample >= 16) {
667  s->use32bit = 1;
669  av_log(avctx, AV_LOG_ERROR, "16bit RGB is experimental and under development, only use it for experiments\n");
670  return AVERROR_INVALIDDATA;
671  }
672  }
673  s->version = FFMAX(s->version, 1);
674  break;
675  default:
676  av_log(avctx, AV_LOG_ERROR, "format not supported\n");
677  return AVERROR(ENOSYS);
678  }
680 
681  if (s->bits_per_raw_sample > 8) {
682  if (s->ac == AC_GOLOMB_RICE) {
683  av_log(avctx, AV_LOG_INFO,
684  "bits_per_raw_sample > 8, forcing range coder\n");
685  s->ac = AC_RANGE_CUSTOM_TAB;
686  }
687  }
688  if (s->transparency) {
689  av_log(avctx, AV_LOG_WARNING, "Storing alpha plane, this will require a recent FFV1 decoder to playback!\n");
690  }
691 #if FF_API_PRIVATE_OPT
693  if (avctx->context_model)
694  s->context_model = avctx->context_model;
695  if (avctx->context_model > 1U) {
696  av_log(avctx, AV_LOG_ERROR, "Invalid context model %d, valid values are 0 and 1\n", avctx->context_model);
697  return AVERROR(EINVAL);
698  }
700 #endif
701 
702  if (s->ac == AC_RANGE_CUSTOM_TAB) {
703  for (i = 1; i < 256; i++)
704  s->state_transition[i] = ver2_state[i];
705  } else {
706  RangeCoder c;
707  ff_build_rac_states(&c, 0.05 * (1LL << 32), 256 - 8);
708  for (i = 1; i < 256; i++)
709  s->state_transition[i] = c.one_state[i];
710  }
711 
712  for (i = 0; i < 256; i++) {
713  s->quant_table_count = 2;
714  if (s->bits_per_raw_sample <= 8) {
715  s->quant_tables[0][0][i]= quant11[i];
716  s->quant_tables[0][1][i]= 11*quant11[i];
717  s->quant_tables[0][2][i]= 11*11*quant11[i];
718  s->quant_tables[1][0][i]= quant11[i];
719  s->quant_tables[1][1][i]= 11*quant11[i];
720  s->quant_tables[1][2][i]= 11*11*quant5 [i];
721  s->quant_tables[1][3][i]= 5*11*11*quant5 [i];
722  s->quant_tables[1][4][i]= 5*5*11*11*quant5 [i];
723  } else {
724  s->quant_tables[0][0][i]= quant9_10bit[i];
725  s->quant_tables[0][1][i]= 11*quant9_10bit[i];
726  s->quant_tables[0][2][i]= 11*11*quant9_10bit[i];
727  s->quant_tables[1][0][i]= quant9_10bit[i];
728  s->quant_tables[1][1][i]= 11*quant9_10bit[i];
729  s->quant_tables[1][2][i]= 11*11*quant5_10bit[i];
730  s->quant_tables[1][3][i]= 5*11*11*quant5_10bit[i];
731  s->quant_tables[1][4][i]= 5*5*11*11*quant5_10bit[i];
732  }
733  }
734  s->context_count[0] = (11 * 11 * 11 + 1) / 2;
735  s->context_count[1] = (11 * 11 * 5 * 5 * 5 + 1) / 2;
736  memcpy(s->quant_table, s->quant_tables[s->context_model],
737  sizeof(s->quant_table));
738 
739  for (i = 0; i < s->plane_count; i++) {
740  PlaneContext *const p = &s->plane[i];
741 
742  memcpy(p->quant_table, s->quant_table, sizeof(p->quant_table));
745  }
746 
747  if ((ret = ff_ffv1_allocate_initial_states(s)) < 0)
748  return ret;
749 
750 #if FF_API_CODED_FRAME
754 #endif
755 
756  if (!s->transparency)
757  s->plane_count = 2;
758  if (!s->chroma_planes && s->version > 3)
759  s->plane_count--;
760 
762  s->picture_number = 0;
763 
764  if (avctx->flags & (AV_CODEC_FLAG_PASS1 | AV_CODEC_FLAG_PASS2)) {
765  for (i = 0; i < s->quant_table_count; i++) {
766  s->rc_stat2[i] = av_mallocz(s->context_count[i] *
767  sizeof(*s->rc_stat2[i]));
768  if (!s->rc_stat2[i])
769  return AVERROR(ENOMEM);
770  }
771  }
772  if (avctx->stats_in) {
773  char *p = avctx->stats_in;
774  uint8_t (*best_state)[256] = av_malloc_array(256, 256);
775  int gob_count = 0;
776  char *next;
777  if (!best_state)
778  return AVERROR(ENOMEM);
779 
780  av_assert0(s->version >= 2);
781 
782  for (;;) {
783  for (j = 0; j < 256; j++)
784  for (i = 0; i < 2; i++) {
785  s->rc_stat[j][i] = strtol(p, &next, 0);
786  if (next == p) {
787  av_log(avctx, AV_LOG_ERROR,
788  "2Pass file invalid at %d %d [%s]\n", j, i, p);
789  av_freep(&best_state);
790  return AVERROR_INVALIDDATA;
791  }
792  p = next;
793  }
794  for (i = 0; i < s->quant_table_count; i++)
795  for (j = 0; j < s->context_count[i]; j++) {
796  for (k = 0; k < 32; k++)
797  for (m = 0; m < 2; m++) {
798  s->rc_stat2[i][j][k][m] = strtol(p, &next, 0);
799  if (next == p) {
800  av_log(avctx, AV_LOG_ERROR,
801  "2Pass file invalid at %d %d %d %d [%s]\n",
802  i, j, k, m, p);
803  av_freep(&best_state);
804  return AVERROR_INVALIDDATA;
805  }
806  p = next;
807  }
808  }
809  gob_count = strtol(p, &next, 0);
810  if (next == p || gob_count <= 0) {
811  av_log(avctx, AV_LOG_ERROR, "2Pass file invalid\n");
812  av_freep(&best_state);
813  return AVERROR_INVALIDDATA;
814  }
815  p = next;
816  while (*p == '\n' || *p == ' ')
817  p++;
818  if (p[0] == 0)
819  break;
820  }
821  if (s->ac == AC_RANGE_CUSTOM_TAB)
822  sort_stt(s, s->state_transition);
823 
824  find_best_state(best_state, s->state_transition);
825 
826  for (i = 0; i < s->quant_table_count; i++) {
827  for (k = 0; k < 32; k++) {
828  double a=0, b=0;
829  int jp = 0;
830  for (j = 0; j < s->context_count[i]; j++) {
831  double p = 128;
832  if (s->rc_stat2[i][j][k][0] + s->rc_stat2[i][j][k][1] > 200 && j || a+b > 200) {
833  if (a+b)
834  p = 256.0 * b / (a + b);
835  s->initial_states[i][jp][k] =
836  best_state[av_clip(round(p), 1, 255)][av_clip_uint8((a + b) / gob_count)];
837  for(jp++; jp<j; jp++)
838  s->initial_states[i][jp][k] = s->initial_states[i][jp-1][k];
839  a=b=0;
840  }
841  a += s->rc_stat2[i][j][k][0];
842  b += s->rc_stat2[i][j][k][1];
843  if (a+b) {
844  p = 256.0 * b / (a + b);
845  }
846  s->initial_states[i][j][k] =
847  best_state[av_clip(round(p), 1, 255)][av_clip_uint8((a + b) / gob_count)];
848  }
849  }
850  }
851  av_freep(&best_state);
852  }
853 
854  if (s->version > 1) {
855  s->num_v_slices = (avctx->width > 352 || avctx->height > 288 || !avctx->slices) ? 2 : 1;
856  for (; s->num_v_slices < 9; s->num_v_slices++) {
857  for (s->num_h_slices = s->num_v_slices; s->num_h_slices < 2*s->num_v_slices; s->num_h_slices++) {
858  if (avctx->slices == s->num_h_slices * s->num_v_slices && avctx->slices <= 64 || !avctx->slices)
859  goto slices_ok;
860  }
861  }
862  av_log(avctx, AV_LOG_ERROR,
863  "Unsupported number %d of slices requested, please specify a "
864  "supported number with -slices (ex:4,6,9,12,16, ...)\n",
865  avctx->slices);
866  return AVERROR(ENOSYS);
867 slices_ok:
868  if ((ret = write_extradata(s)) < 0)
869  return ret;
870  }
871 
872  if ((ret = ff_ffv1_init_slice_contexts(s)) < 0)
873  return ret;
875  if ((ret = ff_ffv1_init_slices_state(s)) < 0)
876  return ret;
877 
878 #define STATS_OUT_SIZE 1024 * 1024 * 6
879  if (avctx->flags & AV_CODEC_FLAG_PASS1) {
881  if (!avctx->stats_out)
882  return AVERROR(ENOMEM);
883  for (i = 0; i < s->quant_table_count; i++)
884  for (j = 0; j < s->max_slice_count; j++) {
885  FFV1Context *sf = s->slice_context[j];
886  av_assert0(!sf->rc_stat2[i]);
887  sf->rc_stat2[i] = av_mallocz(s->context_count[i] *
888  sizeof(*sf->rc_stat2[i]));
889  if (!sf->rc_stat2[i])
890  return AVERROR(ENOMEM);
891  }
892  }
893 
894  return 0;
895 }
896 
898 {
899  RangeCoder *c = &fs->c;
901  int j;
902  memset(state, 128, sizeof(state));
903 
904  put_symbol(c, state, (fs->slice_x +1)*f->num_h_slices / f->width , 0);
905  put_symbol(c, state, (fs->slice_y +1)*f->num_v_slices / f->height , 0);
906  put_symbol(c, state, (fs->slice_width +1)*f->num_h_slices / f->width -1, 0);
907  put_symbol(c, state, (fs->slice_height+1)*f->num_v_slices / f->height-1, 0);
908  for (j=0; j<f->plane_count; j++) {
909  put_symbol(c, state, f->plane[j].quant_table_index, 0);
911  }
912  if (!f->picture.f->interlaced_frame)
913  put_symbol(c, state, 3, 0);
914  else
915  put_symbol(c, state, 1 + !f->picture.f->top_field_first, 0);
916  put_symbol(c, state, f->picture.f->sample_aspect_ratio.num, 0);
917  put_symbol(c, state, f->picture.f->sample_aspect_ratio.den, 0);
918  if (f->version > 3) {
919  put_rac(c, state, fs->slice_coding_mode == 1);
920  if (fs->slice_coding_mode == 1)
922  put_symbol(c, state, fs->slice_coding_mode, 0);
923  if (fs->slice_coding_mode != 1) {
924  put_symbol(c, state, fs->slice_rct_by_coef, 0);
925  put_symbol(c, state, fs->slice_rct_ry_coef, 0);
926  }
927  }
928 }
929 
930 static void choose_rct_params(FFV1Context *fs, const uint8_t *src[3], const int stride[3], int w, int h)
931 {
932 #define NB_Y_COEFF 15
933  static const int rct_y_coeff[15][2] = {
934  {0, 0}, // 4G
935  {1, 1}, // R + 2G + B
936  {2, 2}, // 2R + 2B
937  {0, 2}, // 2G + 2B
938  {2, 0}, // 2R + 2G
939  {4, 0}, // 4R
940  {0, 4}, // 4B
941 
942  {0, 3}, // 1G + 3B
943  {3, 0}, // 3R + 1G
944  {3, 1}, // 3R + B
945  {1, 3}, // R + 3B
946  {1, 2}, // R + G + 2B
947  {2, 1}, // 2R + G + B
948  {0, 1}, // 3G + B
949  {1, 0}, // R + 3G
950  };
951 
952  int stat[NB_Y_COEFF] = {0};
953  int x, y, i, p, best;
954  int16_t *sample[3];
955  int lbd = fs->bits_per_raw_sample <= 8;
956 
957  for (y = 0; y < h; y++) {
958  int lastr=0, lastg=0, lastb=0;
959  for (p = 0; p < 3; p++)
960  sample[p] = fs->sample_buffer + p*w;
961 
962  for (x = 0; x < w; x++) {
963  int b, g, r;
964  int ab, ag, ar;
965  if (lbd) {
966  unsigned v = *((const uint32_t*)(src[0] + x*4 + stride[0]*y));
967  b = v & 0xFF;
968  g = (v >> 8) & 0xFF;
969  r = (v >> 16) & 0xFF;
970  } else {
971  b = *((const uint16_t*)(src[0] + x*2 + stride[0]*y));
972  g = *((const uint16_t*)(src[1] + x*2 + stride[1]*y));
973  r = *((const uint16_t*)(src[2] + x*2 + stride[2]*y));
974  }
975 
976  ar = r - lastr;
977  ag = g - lastg;
978  ab = b - lastb;
979  if (x && y) {
980  int bg = ag - sample[0][x];
981  int bb = ab - sample[1][x];
982  int br = ar - sample[2][x];
983 
984  br -= bg;
985  bb -= bg;
986 
987  for (i = 0; i<NB_Y_COEFF; i++) {
988  stat[i] += FFABS(bg + ((br*rct_y_coeff[i][0] + bb*rct_y_coeff[i][1])>>2));
989  }
990 
991  }
992  sample[0][x] = ag;
993  sample[1][x] = ab;
994  sample[2][x] = ar;
995 
996  lastr = r;
997  lastg = g;
998  lastb = b;
999  }
1000  }
1001 
1002  best = 0;
1003  for (i=1; i<NB_Y_COEFF; i++) {
1004  if (stat[i] < stat[best])
1005  best = i;
1006  }
1007 
1008  fs->slice_rct_by_coef = rct_y_coeff[best][1];
1009  fs->slice_rct_ry_coef = rct_y_coeff[best][0];
1010 }
1011 
1012 static int encode_slice(AVCodecContext *c, void *arg)
1013 {
1014  FFV1Context *fs = *(void **)arg;
1015  FFV1Context *f = fs->avctx->priv_data;
1016  int width = fs->slice_width;
1017  int height = fs->slice_height;
1018  int x = fs->slice_x;
1019  int y = fs->slice_y;
1020  const AVFrame *const p = f->picture.f;
1021  const int ps = av_pix_fmt_desc_get(c->pix_fmt)->comp[0].step;
1022  int ret;
1023  RangeCoder c_bak = fs->c;
1024  const uint8_t *planes[3] = {p->data[0] + ps*x + y*p->linesize[0],
1025  p->data[1] ? p->data[1] + ps*x + y*p->linesize[1] : NULL,
1026  p->data[2] ? p->data[2] + ps*x + y*p->linesize[2] : NULL};
1027 
1028  fs->slice_coding_mode = 0;
1029  if (f->version > 3) {
1030  choose_rct_params(fs, planes, p->linesize, width, height);
1031  } else {
1032  fs->slice_rct_by_coef = 1;
1033  fs->slice_rct_ry_coef = 1;
1034  }
1035 
1036 retry:
1037  if (f->key_frame)
1039  if (f->version > 2) {
1040  encode_slice_header(f, fs);
1041  }
1042  if (fs->ac == AC_GOLOMB_RICE) {
1043  if (f->version > 2)
1044  put_rac(&fs->c, (uint8_t[]) { 129 }, 0);
1045  fs->ac_byte_count = f->version > 2 || (!x && !y) ? ff_rac_terminate(&fs->c) : 0;
1046  init_put_bits(&fs->pb,
1047  fs->c.bytestream_start + fs->ac_byte_count,
1048  fs->c.bytestream_end - fs->c.bytestream_start - fs->ac_byte_count);
1049  }
1050 
1051  if (f->colorspace == 0 && c->pix_fmt != AV_PIX_FMT_YA8) {
1052  const int chroma_width = AV_CEIL_RSHIFT(width, f->chroma_h_shift);
1053  const int chroma_height = AV_CEIL_RSHIFT(height, f->chroma_v_shift);
1054  const int cx = x >> f->chroma_h_shift;
1055  const int cy = y >> f->chroma_v_shift;
1056 
1057  ret = encode_plane(fs, p->data[0] + ps*x + y*p->linesize[0], width, height, p->linesize[0], 0, 1);
1058 
1059  if (f->chroma_planes) {
1060  ret |= encode_plane(fs, p->data[1] + ps*cx+cy*p->linesize[1], chroma_width, chroma_height, p->linesize[1], 1, 1);
1061  ret |= encode_plane(fs, p->data[2] + ps*cx+cy*p->linesize[2], chroma_width, chroma_height, p->linesize[2], 1, 1);
1062  }
1063  if (fs->transparency)
1064  ret |= encode_plane(fs, p->data[3] + ps*x + y*p->linesize[3], width, height, p->linesize[3], 2, 1);
1065  } else if (c->pix_fmt == AV_PIX_FMT_YA8) {
1066  ret = encode_plane(fs, p->data[0] + ps*x + y*p->linesize[0], width, height, p->linesize[0], 0, 2);
1067  ret |= encode_plane(fs, p->data[0] + 1 + ps*x + y*p->linesize[0], width, height, p->linesize[0], 1, 2);
1068  } else if (f->use32bit) {
1069  ret = encode_rgb_frame32(fs, planes, width, height, p->linesize);
1070  } else {
1071  ret = encode_rgb_frame(fs, planes, width, height, p->linesize);
1072  }
1073  emms_c();
1074 
1075  if (ret < 0) {
1076  av_assert0(fs->slice_coding_mode == 0);
1077  if (fs->version < 4 || !fs->ac) {
1078  av_log(c, AV_LOG_ERROR, "Buffer too small\n");
1079  return ret;
1080  }
1081  av_log(c, AV_LOG_DEBUG, "Coding slice as PCM\n");
1082  fs->slice_coding_mode = 1;
1083  fs->c = c_bak;
1084  goto retry;
1085  }
1086 
1087  return 0;
1088 }
1089 
1091  const AVFrame *pict, int *got_packet)
1092 {
1093  FFV1Context *f = avctx->priv_data;
1094  RangeCoder *const c = &f->slice_context[0]->c;
1095  AVFrame *const p = f->picture.f;
1096  uint8_t keystate = 128;
1097  uint8_t *buf_p;
1098  int i, ret;
1099  int64_t maxsize = AV_INPUT_BUFFER_MIN_SIZE
1100  + avctx->width*avctx->height*37LL*4;
1101 
1102  if(!pict) {
1103  if (avctx->flags & AV_CODEC_FLAG_PASS1) {
1104  int j, k, m;
1105  char *p = avctx->stats_out;
1106  char *end = p + STATS_OUT_SIZE;
1107 
1108  memset(f->rc_stat, 0, sizeof(f->rc_stat));
1109  for (i = 0; i < f->quant_table_count; i++)
1110  memset(f->rc_stat2[i], 0, f->context_count[i] * sizeof(*f->rc_stat2[i]));
1111 
1113  for (j = 0; j < f->slice_count; j++) {
1114  FFV1Context *fs = f->slice_context[j];
1115  for (i = 0; i < 256; i++) {
1116  f->rc_stat[i][0] += fs->rc_stat[i][0];
1117  f->rc_stat[i][1] += fs->rc_stat[i][1];
1118  }
1119  for (i = 0; i < f->quant_table_count; i++) {
1120  for (k = 0; k < f->context_count[i]; k++)
1121  for (m = 0; m < 32; m++) {
1122  f->rc_stat2[i][k][m][0] += fs->rc_stat2[i][k][m][0];
1123  f->rc_stat2[i][k][m][1] += fs->rc_stat2[i][k][m][1];
1124  }
1125  }
1126  }
1127 
1128  for (j = 0; j < 256; j++) {
1129  snprintf(p, end - p, "%" PRIu64 " %" PRIu64 " ",
1130  f->rc_stat[j][0], f->rc_stat[j][1]);
1131  p += strlen(p);
1132  }
1133  snprintf(p, end - p, "\n");
1134 
1135  for (i = 0; i < f->quant_table_count; i++) {
1136  for (j = 0; j < f->context_count[i]; j++)
1137  for (m = 0; m < 32; m++) {
1138  snprintf(p, end - p, "%" PRIu64 " %" PRIu64 " ",
1139  f->rc_stat2[i][j][m][0], f->rc_stat2[i][j][m][1]);
1140  p += strlen(p);
1141  }
1142  }
1143  snprintf(p, end - p, "%d\n", f->gob_count);
1144  }
1145  return 0;
1146  }
1147 
1148  if (f->version > 3)
1149  maxsize = AV_INPUT_BUFFER_MIN_SIZE + avctx->width*avctx->height*3LL*4;
1150 
1151  if (maxsize > INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE - 32) {
1152  av_log(avctx, AV_LOG_WARNING, "Cannot allocate worst case packet size, the encoding could fail\n");
1153  maxsize = INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE - 32;
1154  }
1155 
1156  if ((ret = ff_alloc_packet2(avctx, pkt, maxsize, 0)) < 0)
1157  return ret;
1158 
1159  ff_init_range_encoder(c, pkt->data, pkt->size);
1160  ff_build_rac_states(c, 0.05 * (1LL << 32), 256 - 8);
1161 
1162  av_frame_unref(p);
1163  if ((ret = av_frame_ref(p, pict)) < 0)
1164  return ret;
1165 #if FF_API_CODED_FRAME
1169 #endif
1170 
1171  if (avctx->gop_size == 0 || f->picture_number % avctx->gop_size == 0) {
1172  put_rac(c, &keystate, 1);
1173  f->key_frame = 1;
1174  f->gob_count++;
1175  write_header(f);
1176  } else {
1177  put_rac(c, &keystate, 0);
1178  f->key_frame = 0;
1179  }
1180 
1181  if (f->ac == AC_RANGE_CUSTOM_TAB) {
1182  int i;
1183  for (i = 1; i < 256; i++) {
1184  c->one_state[i] = f->state_transition[i];
1185  c->zero_state[256 - i] = 256 - c->one_state[i];
1186  }
1187  }
1188 
1189  for (i = 0; i < f->slice_count; i++) {
1190  FFV1Context *fs = f->slice_context[i];
1191  uint8_t *start = pkt->data + pkt->size * (int64_t)i / f->slice_count;
1192  int len = pkt->size / f->slice_count;
1193  if (i) {
1194  ff_init_range_encoder(&fs->c, start, len);
1195  } else {
1198  fs->c.bytestream_end = fs->c.bytestream_start + len;
1199  }
1200  }
1201  avctx->execute(avctx, encode_slice, &f->slice_context[0], NULL,
1202  f->slice_count, sizeof(void *));
1203 
1204  buf_p = pkt->data;
1205  for (i = 0; i < f->slice_count; i++) {
1206  FFV1Context *fs = f->slice_context[i];
1207  int bytes;
1208 
1209  if (fs->ac != AC_GOLOMB_RICE) {
1210  uint8_t state = 129;
1211  put_rac(&fs->c, &state, 0);
1212  bytes = ff_rac_terminate(&fs->c);
1213  } else {
1214  flush_put_bits(&fs->pb); // FIXME: nicer padding
1215  bytes = fs->ac_byte_count + (put_bits_count(&fs->pb) + 7) / 8;
1216  }
1217  if (i > 0 || f->version > 2) {
1218  av_assert0(bytes < pkt->size / f->slice_count);
1219  memmove(buf_p, fs->c.bytestream_start, bytes);
1220  av_assert0(bytes < (1 << 24));
1221  AV_WB24(buf_p + bytes, bytes);
1222  bytes += 3;
1223  }
1224  if (f->ec) {
1225  unsigned v;
1226  buf_p[bytes++] = 0;
1227  v = av_crc(av_crc_get_table(AV_CRC_32_IEEE), 0, buf_p, bytes);
1228  AV_WL32(buf_p + bytes, v);
1229  bytes += 4;
1230  }
1231  buf_p += bytes;
1232  }
1233 
1234  if (avctx->flags & AV_CODEC_FLAG_PASS1)
1235  avctx->stats_out[0] = '\0';
1236 
1237 #if FF_API_CODED_FRAME
1239  avctx->coded_frame->key_frame = f->key_frame;
1241 #endif
1242 
1243  f->picture_number++;
1244  pkt->size = buf_p - pkt->data;
1245  pkt->pts =
1246  pkt->dts = pict->pts;
1247  pkt->flags |= AV_PKT_FLAG_KEY * f->key_frame;
1248  *got_packet = 1;
1249 
1250  return 0;
1251 }
1252 
1254 {
1255  ff_ffv1_close(avctx);
1256  return 0;
1257 }
1258 
1259 #define OFFSET(x) offsetof(FFV1Context, x)
1260 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
1261 static const AVOption options[] = {
1262  { "slicecrc", "Protect slices with CRCs", OFFSET(ec), AV_OPT_TYPE_BOOL, { .i64 = -1 }, -1, 1, VE },
1263  { "coder", "Coder type", OFFSET(ac), AV_OPT_TYPE_INT,
1264  { .i64 = 0 }, -2, 2, VE, "coder" },
1265  { "rice", "Golomb rice", 0, AV_OPT_TYPE_CONST,
1266  { .i64 = AC_GOLOMB_RICE }, INT_MIN, INT_MAX, VE, "coder" },
1267  { "range_def", "Range with default table", 0, AV_OPT_TYPE_CONST,
1268  { .i64 = AC_RANGE_DEFAULT_TAB_FORCE }, INT_MIN, INT_MAX, VE, "coder" },
1269  { "range_tab", "Range with custom table", 0, AV_OPT_TYPE_CONST,
1270  { .i64 = AC_RANGE_CUSTOM_TAB }, INT_MIN, INT_MAX, VE, "coder" },
1271  { "ac", "Range with custom table (the ac option exists for compatibility and is deprecated)", 0, AV_OPT_TYPE_CONST,
1272  { .i64 = 1 }, INT_MIN, INT_MAX, VE, "coder" },
1273  { "context", "Context model", OFFSET(context_model), AV_OPT_TYPE_INT,
1274  { .i64 = 0 }, 0, 1, VE },
1275 
1276  { NULL }
1277 };
1278 
1279 static const AVClass ffv1_class = {
1280  .class_name = "ffv1 encoder",
1281  .item_name = av_default_item_name,
1282  .option = options,
1283  .version = LIBAVUTIL_VERSION_INT,
1284 };
1285 
1286 #if FF_API_CODER_TYPE
1287 static const AVCodecDefault ffv1_defaults[] = {
1288  { "coder", "-1" },
1289  { NULL },
1290 };
1291 #endif
1292 
1294  .name = "ffv1",
1295  .long_name = NULL_IF_CONFIG_SMALL("FFmpeg video codec #1"),
1296  .type = AVMEDIA_TYPE_VIDEO,
1297  .id = AV_CODEC_ID_FFV1,
1298  .priv_data_size = sizeof(FFV1Context),
1299  .init = encode_init,
1300  .encode2 = encode_frame,
1301  .close = encode_close,
1303  .pix_fmts = (const enum AVPixelFormat[]) {
1319 
1320  },
1321 #if FF_API_CODER_TYPE
1322  .defaults = ffv1_defaults,
1323 #endif
1324  .priv_class = &ffv1_class,
1325 };
static av_always_inline int fold(int diff, int bits)
Definition: ffv1.h:151
#define FF_COMPLIANCE_EXPERIMENTAL
Allow nonstandardized experimental things.
Definition: avcodec.h:2956
#define NULL
Definition: coverity.c:32
static const AVCodecDefault ffv1_defaults[]
Definition: ffv1enc.c:1287
#define AV_PIX_FMT_YUVA422P16
Definition: pixfmt.h:392
const char * s
Definition: avisynth_c.h:768
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
#define AV_PIX_FMT_YUVA422P9
Definition: pixfmt.h:386
int size
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2333
This structure describes decoded (raw) audio or video data.
Definition: frame.h:187
AVOption.
Definition: opt.h:246
static void encode_slice_header(FFV1Context *f, FFV1Context *fs)
Definition: ffv1enc.c:897
#define AV_PIX_FMT_YUVA420P10
Definition: pixfmt.h:388
8 bits gray, 8 bits alpha
Definition: pixfmt.h:158
#define AV_PIX_FMT_YUVA422P10
Definition: pixfmt.h:389
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:71
misc image utilities
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
AVFrame * f
Definition: thread.h:36
int16_t quant_table[MAX_CONTEXT_INPUTS][256]
Definition: ffv1.h:69
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
int quant_table_count
Definition: ffv1.h:126
const char * g
Definition: vf_curves.c:112
const char * desc
Definition: nvenc.c:60
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
int slice_height
Definition: ffv1.h:134
#define MAX_CONTEXT_INPUTS
Definition: ffv1.h:54
int16_t * sample_buffer
Definition: ffv1.h:111
int version
Definition: ffv1.h:87
int micro_version
Definition: ffv1.h:88
uint8_t zero_state[256]
Definition: rangecoder.h:40
Range coder.
uint8_t * bytestream_end
Definition: rangecoder.h:44
int num
Numerator.
Definition: rational.h:59
int size
Definition: avcodec.h:1658
const char * b
Definition: vf_curves.c:113
#define AV_PIX_FMT_GBRP10
Definition: pixfmt.h:371
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:1960
#define AV_PIX_FMT_YUV420P12
Definition: pixfmt.h:359
char * stats_in
pass2 encoding statistics input buffer Concatenated stuff from stats_out of pass1 should be placed he...
Definition: avcodec.h:2909
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:185
static int ring_size(RingBuffer *ring)
Definition: async.c:105
static AVPacket pkt
uint64_t(*[MAX_QUANT_TABLES] rc_stat2)[32][2]
Definition: ffv1.h:86
int bits_per_raw_sample
Bits per sample/pixel of internal libavcodec pixel/sample format.
Definition: avcodec.h:3133
FF Video Codec 1 (a lossless codec)
#define src
Definition: vp8dsp.c:254
#define sample
int height
Definition: ffv1.h:89
int stride
Definition: mace.c:144
AVCodec.
Definition: avcodec.h:3681
static int RENAME() encode_rgb_frame(FFV1Context *s, const uint8_t *src[3], int w, int h, const int stride[3])
uint8_t one_state[256]
Definition: rangecoder.h:41
Macro definitions for various function/variable attributes.
int slice_rct_by_coef
Definition: ffv1.h:139
#define log2(x)
Definition: libm.h:404
#define AV_PIX_FMT_GRAY10
Definition: pixfmt.h:337
int plane_count
Definition: ffv1.h:100
int ff_rac_terminate(RangeCoder *c)
Definition: rangecoder.c:104
static void write_quant_tables(RangeCoder *c, int16_t quant_table[MAX_CONTEXT_INPUTS][256])
Definition: ffv1enc.c:329
#define AV_PIX_FMT_GRAY12
Definition: pixfmt.h:338
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
#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: avcodec.h:1019
ThreadFrame picture
Definition: ffv1.h:96
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
uint64_t rc_stat[256][2]
Definition: ffv1.h:85
PutBitContext pb
Definition: ffv1.h:84
planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
Definition: pixfmt.h:106
uint8_t bits
Definition: crc.c:296
AVComponentDescriptor comp[4]
Parameters that describe how pixels are packed.
Definition: pixdesc.h:117
uint8_t
#define av_cold
Definition: attributes.h:82
#define av_malloc(s)
static av_noinline void put_symbol(RangeCoder *c, uint8_t *state, int v, int is_signed)
Definition: ffv1enc.c:233
#define av_assert2(cond)
assert() equivalent, that does lie in speed critical code.
Definition: avassert.h:64
AVOptions.
int8_t bias
Definition: ffv1.h:64
static av_cold int end(AVCodecContext *avctx)
Definition: avrndec.c:90
RangeCoder c
Definition: ffv1.h:82
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:388
#define emms_c()
Definition: internal.h:54
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
Definition: frame.h:271
av_cold int ff_ffv1_common_init(AVCodecContext *avctx)
Definition: ffv1.c:42
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
Definition: avcodec.h:1847
static av_cold int encode_init(AVCodecContext *avctx)
Definition: ffv1enc.c:508
#define AV_PIX_FMT_YUVA420P9
Definition: pixfmt.h:385
#define AV_PIX_FMT_GBRP9
Definition: pixfmt.h:370
static const int8_t quant11[256]
Definition: ffv1enc.c:101
int slice_y
Definition: ffv1.h:136
uint8_t(*[MAX_QUANT_TABLES] initial_states)[32]
Definition: ffv1.h:108
Public header for CRC hash function implementation.
av_cold int ff_ffv1_close(AVCodecContext *avctx)
Definition: ffv1.c:210
#define height
uint8_t * data
Definition: avcodec.h:1657
attribute_deprecated int context_model
Definition: avcodec.h:2791
uint8_t count
Definition: ffv1.h:65
#define ff_dlog(a,...)
static int encode_slice(AVCodecContext *c, void *arg)
Definition: ffv1enc.c:1012
static void choose_rct_params(FFV1Context *fs, const uint8_t *src[3], const int stride[3], int w, int h)
Definition: ffv1enc.c:930
#define AV_PIX_FMT_YUV444P16
Definition: pixfmt.h:368
int interlaced_frame
The content of the picture is interlaced.
Definition: frame.h:325
#define AV_PIX_FMT_YUV422P12
Definition: pixfmt.h:360
char * stats_out
pass1 encoding statistics output buffer
Definition: avcodec.h:2901
#define NB_Y_COEFF
#define AV_PIX_FMT_YUVA420P16
Definition: pixfmt.h:391
high precision timer, useful to profile code
#define AV_INPUT_BUFFER_MIN_SIZE
minimum encoding buffer size Used to avoid some checks during header writing.
Definition: avcodec.h:776
#define av_log(a,...)
static int write_extradata(FFV1Context *f)
Definition: ffv1enc.c:384
int bits_per_raw_sample
Definition: ffv1.h:122
int slice_width
Definition: ffv1.h:133
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
Definition: avcodec.h:1689
#define U(x)
Definition: vp56_arith.h:37
static int sort_stt(FFV1Context *s, uint8_t stt[256])
Definition: ffv1enc.c:460
static const uint8_t ver2_state[256]
Definition: ffv1enc.c:120
planar YUV 4:2:2 24bpp, (1 Cr & Cb sample per 2x1 Y & A samples)
Definition: pixfmt.h:192
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
av_cold int ff_ffv1_init_slices_state(FFV1Context *f)
Definition: ffv1.c:106
int16_t quant_tables[MAX_QUANT_TABLES][MAX_CONTEXT_INPUTS][256]
Definition: ffv1.h:105
av_default_item_name
#define AVERROR(e)
Definition: error.h:43
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:179
static struct @253 state
const char * r
Definition: vf_curves.c:111
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:197
int context_count
Definition: ffv1.h:71
#define AV_PIX_FMT_YUVA444P16
Definition: pixfmt.h:393
const char * arg
Definition: jacosubdec.c:66
int flags
AV_CODEC_FLAG_*.
Definition: avcodec.h:1827
#define AV_PIX_FMT_RGB48
Definition: pixfmt.h:341
simple assert() macros that are a bit more flexible than ISO C assert().
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
Definition: mem.c:222
static av_always_inline int RENAME() encode_line(FFV1Context *s, int w, TYPE *sample[3], int plane_index, int bits)
const char * name
Name of the codec implementation.
Definition: avcodec.h:3688
static av_always_inline av_const double round(double x)
Definition: libm.h:444
static const int8_t quant5[256]
Definition: ffv1enc.c:63
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:358
int ff_ffv1_allocate_initial_states(FFV1Context *f)
Definition: ffv1.c:167
#define FFMAX(a, b)
Definition: common.h:94
uint8_t * bytestream
Definition: rangecoder.h:43
int flags
A combination of AV_PKT_FLAG values.
Definition: avcodec.h:1663
static int put_bits_count(PutBitContext *s)
Definition: put_bits.h:85
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:70
int ac
1=range coder <-> 0=golomb rice
Definition: ffv1.h:101
int16_t quant_table[MAX_CONTEXT_INPUTS][256]
Definition: ffv1.h:104
#define AC_RANGE_CUSTOM_TAB
Definition: ffv1.h:58
int run_index
Definition: ffv1.h:109
Definition: ffv1.h:61
#define AV_PIX_FMT_YUV422P9
Definition: pixfmt.h:353
#define av_flatten
Definition: attributes.h:88
static int encode_frame(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *pict, int *got_packet)
Definition: ffv1enc.c:1090
static av_cold int encode_close(AVCodecContext *avctx)
Definition: ffv1enc.c:1253
uint8_t state_transition[256]
Definition: ffv1.h:107
uint8_t nb_components
The number of components each pixel has, (1-4)
Definition: pixdesc.h:83
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:261
#define AV_PIX_FMT_GBRP16
Definition: pixfmt.h:374
#define AV_PIX_FMT_GRAY16
Definition: pixfmt.h:339
int key_frame
Definition: ffv1.h:95
#define FFMIN(a, b)
Definition: common.h:96
int num_h_slices
Definition: ffv1.h:132
#define width
int width
picture width / height.
Definition: avcodec.h:1919
int colorspace
Definition: ffv1.h:110
static float quant_table[96]
Definition: binkaudio.c:42
#define AV_CODEC_FLAG_PASS1
Use internal 2pass ratecontrol in first pass mode.
Definition: avcodec.h:884
static void update_vlc_state(VlcState *const state, const int v)
Definition: ffv1.h:164
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:357
int slice_count
Definition: ffv1.h:129
#define AV_WB24(p, d)
Definition: intreadwrite.h:455
AVCodec ff_ffv1_encoder
Definition: ffv1enc.c:1293
int max_slice_count
Definition: ffv1.h:130
void ff_build_rac_states(RangeCoder *c, int factor, int max_p)
Definition: rangecoder.c:63
#define FFABS(a)
Absolute value, Note, INT_MIN / INT64_MIN result in undefined behavior as they are not representable ...
Definition: common.h:72
int level
level
Definition: avcodec.h:3333
av_cold int ff_ffv1_init_slice_contexts(FFV1Context *f)
Definition: ffv1.c:117
#define AV_PIX_FMT_YUVA444P10
Definition: pixfmt.h:390
int ac_byte_count
number of bytes used for AC coding
Definition: ffv1.h:102
int16_t drift
Definition: ffv1.h:62
void avcodec_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: imgconvert.c:38
int packed_at_lsb
Definition: ffv1.h:123
if(ret< 0)
Definition: vf_mcdeint.c:282
#define AV_PIX_FMT_YUV444P9
Definition: pixfmt.h:354
#define AV_PIX_FMT_GBRP14
Definition: pixfmt.h:373
attribute_deprecated int coder_type
Definition: avcodec.h:2785
#define VE
Definition: ffv1enc.c:1260
static const AVOption options[]
Definition: ffv1enc.c:1261
#define av_log2
Definition: intmath.h:83
static const float pred[4]
Definition: siprdata.h:259
#define AV_PIX_FMT_YUV420P16
Definition: pixfmt.h:366
#define AV_CODEC_CAP_SLICE_THREADS
Codec supports slice-based (or partition-based) multithreading.
Definition: avcodec.h:1061
#define AV_LOG_INFO
Standard information.
Definition: log.h:187
int context_count[MAX_QUANT_TABLES]
Definition: ffv1.h:106
static const int8_t quant9_10bit[256]
Definition: ffv1enc.c:82
Libavcodec external API header.
#define AC_RANGE_DEFAULT_TAB_FORCE
Definition: ffv1.h:59
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:218
#define STATS_OUT_SIZE
planar YUV 4:4:4 32bpp, (1 Cr & Cb sample per 1x1 Y & A samples)
Definition: pixfmt.h:193
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:81
main external API structure.
Definition: avcodec.h:1732
#define AV_PIX_FMT_RGB32
Definition: pixfmt.h:330
int intra
Definition: ffv1.h:117
AVRational sample_aspect_ratio
Sample aspect ratio for the video frame, 0/1 if unknown/unspecified.
Definition: frame.h:266
static void find_best_state(uint8_t best_state[256][256], const uint8_t one_state[256])
Definition: ffv1enc.c:139
int extradata_size
Definition: avcodec.h:1848
#define AV_PIX_FMT_YUV420P10
Definition: pixfmt.h:355
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: pixfmt.h:72
static void write_quant_table(RangeCoder *c, int16_t *quant_table)
Definition: ffv1enc.c:314
Describe the class of an AVClass context structure.
Definition: log.h:67
av_cold void ff_init_range_encoder(RangeCoder *c, uint8_t *buf, int buf_size)
Definition: rangecoder.c:42
int use32bit
Definition: ffv1.h:114
#define AC_GOLOMB_RICE
Definition: ffv1.h:56
static void put_vlc_symbol(PutBitContext *pb, VlcState *const state, int v, int bits)
Definition: ffv1enc.c:240
static int encode_plane(FFV1Context *s, uint8_t *src, int w, int h, int stride, int plane_index, int pixel_stride)
Definition: ffv1enc.c:274
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:547
int picture_number
Definition: ffv1.h:94
uint16_t error_sum
Definition: ffv1.h:63
#define AC_RANGE_DEFAULT_TAB
Definition: ffv1.h:57
static const AVClass ffv1_class
Definition: ffv1enc.c:1279
#define AV_PIX_FMT_YUV420P9
Definition: pixfmt.h:352
#define snprintf
Definition: snprintf.h:34
int ff_alloc_packet2(AVCodecContext *avctx, AVPacket *avpkt, int64_t size, int64_t min_size)
Check AVPacket size and/or allocate data.
Definition: utils.c:1739
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:262
#define AV_PIX_FMT_GBRP12
Definition: pixfmt.h:372
void av_frame_unref(AVFrame *frame)
Unreference all the buffers referenced by frame and reset the frame fields.
Definition: frame.c:498
#define CONTEXT_SIZE
Definition: ffv1.h:51
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:356
int gob_count
Definition: ffv1.h:125
int quant_table_index
Definition: ffv1.h:70
#define AV_PIX_FMT_YUV444P12
Definition: pixfmt.h:362
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:201
#define OFFSET(x)
Definition: ffv1enc.c:1259
int gop_size
the number of pictures in a group of pictures, or 0 for intra_only
Definition: avcodec.h:1945
const AVCRC * av_crc_get_table(AVCRCId crc_id)
Get an initialized standard CRC table.
Definition: crc.c:343
#define COST2(old, new)
int context_model
Definition: ffv1.h:120
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:66
Y , 8bpp.
Definition: pixfmt.h:74
#define FF_DISABLE_DEPRECATION_WARNINGS
Definition: internal.h:83
common internal api header.
static void flush_put_bits(PutBitContext *s)
Pad the end of the output stream with zeros.
Definition: put_bits.h:101
static const int8_t quant5_10bit[256]
Definition: ffv1enc.c:44
static double c[64]
void ff_ffv1_clear_slice_state(FFV1Context *f, FFV1Context *fs)
Definition: ffv1.c:182
#define put_rac(C, S, B)
#define AV_PIX_FMT_YUVA444P9
Definition: pixfmt.h:387
attribute_deprecated AVFrame * coded_frame
the picture in the bitstream
Definition: avcodec.h:3152
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
Definition: pixfmt.h:73
static void init_put_bits(PutBitContext *s, uint8_t *buffer, int buffer_size)
Initialize the PutBitContext s.
Definition: put_bits.h:48
int den
Denominator.
Definition: rational.h:60
int slice_coding_mode
Definition: ffv1.h:138
uint8_t * bytestream_start
Definition: rangecoder.h:42
#define AV_INPUT_BUFFER_PADDING_SIZE
Required number of additionally allocated bytes at the end of the input bitstream for decoding...
Definition: avcodec.h:769
#define AV_CODEC_FLAG_PASS2
Use internal 2pass ratecontrol in second pass mode.
Definition: avcodec.h:888
int slices
Number of slices.
Definition: avcodec.h:2485
void * priv_data
Definition: avcodec.h:1774
int chroma_h_shift
Definition: ffv1.h:91
PlaneContext plane[MAX_PLANES]
Definition: ffv1.h:103
int transparency
Definition: ffv1.h:92
#define FF_ENABLE_DEPRECATION_WARNINGS
Definition: internal.h:84
int chroma_v_shift
Definition: ffv1.h:91
int top_field_first
If the content is interlaced, is top field displayed first.
Definition: frame.h:330
int len
int chroma_planes
Definition: ffv1.h:90
int key_frame
1 -> keyframe, 0-> not
Definition: frame.h:256
static void write_header(FFV1Context *f)
Definition: ffv1enc.c:337
struct FFV1Context * slice_context[MAX_SLICES]
Definition: ffv1.h:128
int64_t dts
Decompression timestamp in AVStream->time_base units; the time at which the packet is decompressed...
Definition: avcodec.h:1656
#define av_noinline
Definition: attributes.h:62
#define av_freep(p)
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
Definition: pixfmt.h:104
void INT64 start
Definition: avisynth_c.h:690
#define av_always_inline
Definition: attributes.h:39
#define av_malloc_array(a, b)
#define FFSWAP(type, a, b)
Definition: common.h:99
int ec
Definition: ffv1.h:116
int num_v_slices
Definition: ffv1.h:131
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:3201
exp golomb vlc stuff
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
This structure stores compressed data.
Definition: avcodec.h:1634
AVCodecContext * avctx
Definition: ffv1.h:81
int strict_std_compliance
strictly follow the standard (MPEG-4, ...).
Definition: avcodec.h:2951
static void print(AVTreeNode *t, int depth)
Definition: tree.c:44
int slice_x
Definition: ffv1.h:135
#define AV_PIX_FMT_YUV422P16
Definition: pixfmt.h:367
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
Definition: avcodec.h:1650
for(j=16;j >0;--j)
int step
Number of elements between 2 horizontally consecutive pixels.
Definition: pixdesc.h:41
int width
Definition: ffv1.h:89
#define AV_WL32(p, v)
Definition: intreadwrite.h:431
#define AV_PIX_FMT_0RGB32
Definition: pixfmt.h:334
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:58
int slice_rct_ry_coef
Definition: ffv1.h:140
bitstream writer API