FFmpeg
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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 #if 0 // JPEG LS
256  if (k == 0 && 2 * state->drift <= -state->count)
257  code = v ^ (-1);
258  else
259  code = v;
260 #else
261  code = v ^ ((2 * state->drift + state->count) >> 31);
262 #endif
263 
264  ff_dlog(NULL, "v:%d/%d bias:%d error:%d drift:%d count:%d k:%d\n", v, code,
265  state->bias, state->error_sum, state->drift, state->count, k);
266  set_sr_golomb(pb, code, k, 12, bits);
267 
268  update_vlc_state(state, v);
269 }
270 
271 #define TYPE int16_t
272 #define RENAME(name) name
273 #include "ffv1enc_template.c"
274 #undef TYPE
275 #undef RENAME
276 
277 #define TYPE int32_t
278 #define RENAME(name) name ## 32
279 #include "ffv1enc_template.c"
280 
281 static int encode_plane(FFV1Context *s, uint8_t *src, int w, int h,
282  int stride, int plane_index, int pixel_stride)
283 {
284  int x, y, i, ret;
285  const int ring_size = s->context_model ? 3 : 2;
286  int16_t *sample[3];
287  s->run_index = 0;
288 
289  memset(s->sample_buffer, 0, ring_size * (w + 6) * sizeof(*s->sample_buffer));
290 
291  for (y = 0; y < h; y++) {
292  for (i = 0; i < ring_size; i++)
293  sample[i] = s->sample_buffer + (w + 6) * ((h + i - y) % ring_size) + 3;
294 
295  sample[0][-1]= sample[1][0 ];
296  sample[1][ w]= sample[1][w-1];
297 // { START_TIMER
298  if (s->bits_per_raw_sample <= 8) {
299  for (x = 0; x < w; x++)
300  sample[0][x] = src[x * pixel_stride + stride * y];
301  if((ret = encode_line(s, w, sample, plane_index, 8)) < 0)
302  return ret;
303  } else {
304  if (s->packed_at_lsb) {
305  for (x = 0; x < w; x++) {
306  sample[0][x] = ((uint16_t*)(src + stride*y))[x];
307  }
308  } else {
309  for (x = 0; x < w; x++) {
310  sample[0][x] = ((uint16_t*)(src + stride*y))[x] >> (16 - s->bits_per_raw_sample);
311  }
312  }
313  if((ret = encode_line(s, w, sample, plane_index, s->bits_per_raw_sample)) < 0)
314  return ret;
315  }
316 // STOP_TIMER("encode line") }
317  }
318  return 0;
319 }
320 
321 static void write_quant_table(RangeCoder *c, int16_t *quant_table)
322 {
323  int last = 0;
324  int i;
326  memset(state, 128, sizeof(state));
327 
328  for (i = 1; i < 128; i++)
329  if (quant_table[i] != quant_table[i - 1]) {
330  put_symbol(c, state, i - last - 1, 0);
331  last = i;
332  }
333  put_symbol(c, state, i - last - 1, 0);
334 }
335 
337  int16_t quant_table[MAX_CONTEXT_INPUTS][256])
338 {
339  int i;
340  for (i = 0; i < 5; i++)
342 }
343 
344 static void write_header(FFV1Context *f)
345 {
347  int i, j;
348  RangeCoder *const c = &f->slice_context[0]->c;
349 
350  memset(state, 128, sizeof(state));
351 
352  if (f->version < 2) {
353  put_symbol(c, state, f->version, 0);
354  put_symbol(c, state, f->ac, 0);
355  if (f->ac == AC_RANGE_CUSTOM_TAB) {
356  for (i = 1; i < 256; i++)
357  put_symbol(c, state,
358  f->state_transition[i] - c->one_state[i], 1);
359  }
360  put_symbol(c, state, f->colorspace, 0); //YUV cs type
361  if (f->version > 0)
362  put_symbol(c, state, f->bits_per_raw_sample, 0);
363  put_rac(c, state, f->chroma_planes);
364  put_symbol(c, state, f->chroma_h_shift, 0);
365  put_symbol(c, state, f->chroma_v_shift, 0);
366  put_rac(c, state, f->transparency);
367 
369  } else if (f->version < 3) {
370  put_symbol(c, state, f->slice_count, 0);
371  for (i = 0; i < f->slice_count; i++) {
372  FFV1Context *fs = f->slice_context[i];
373  put_symbol(c, state,
374  (fs->slice_x + 1) * f->num_h_slices / f->width, 0);
375  put_symbol(c, state,
376  (fs->slice_y + 1) * f->num_v_slices / f->height, 0);
377  put_symbol(c, state,
378  (fs->slice_width + 1) * f->num_h_slices / f->width - 1,
379  0);
380  put_symbol(c, state,
381  (fs->slice_height + 1) * f->num_v_slices / f->height - 1,
382  0);
383  for (j = 0; j < f->plane_count; j++) {
384  put_symbol(c, state, f->plane[j].quant_table_index, 0);
386  }
387  }
388  }
389 }
390 
392 {
393  RangeCoder *const c = &f->c;
395  int i, j, k;
396  uint8_t state2[32][CONTEXT_SIZE];
397  unsigned v;
398 
399  memset(state2, 128, sizeof(state2));
400  memset(state, 128, sizeof(state));
401 
402  f->avctx->extradata_size = 10000 + 4 +
403  (11 * 11 * 5 * 5 * 5 + 11 * 11 * 11) * 32;
405  if (!f->avctx->extradata)
406  return AVERROR(ENOMEM);
408  ff_build_rac_states(c, 0.05 * (1LL << 32), 256 - 8);
409 
410  put_symbol(c, state, f->version, 0);
411  if (f->version > 2) {
412  if (f->version == 3) {
413  f->micro_version = 4;
414  } else if (f->version == 4)
415  f->micro_version = 2;
416  put_symbol(c, state, f->micro_version, 0);
417  }
418 
419  put_symbol(c, state, f->ac, 0);
420  if (f->ac == AC_RANGE_CUSTOM_TAB)
421  for (i = 1; i < 256; i++)
422  put_symbol(c, state, f->state_transition[i] - c->one_state[i], 1);
423 
424  put_symbol(c, state, f->colorspace, 0); // YUV cs type
425  put_symbol(c, state, f->bits_per_raw_sample, 0);
426  put_rac(c, state, f->chroma_planes);
427  put_symbol(c, state, f->chroma_h_shift, 0);
428  put_symbol(c, state, f->chroma_v_shift, 0);
429  put_rac(c, state, f->transparency);
430  put_symbol(c, state, f->num_h_slices - 1, 0);
431  put_symbol(c, state, f->num_v_slices - 1, 0);
432 
433  put_symbol(c, state, f->quant_table_count, 0);
434  for (i = 0; i < f->quant_table_count; i++)
436 
437  for (i = 0; i < f->quant_table_count; i++) {
438  for (j = 0; j < f->context_count[i] * CONTEXT_SIZE; j++)
439  if (f->initial_states[i] && f->initial_states[i][0][j] != 128)
440  break;
441  if (j < f->context_count[i] * CONTEXT_SIZE) {
442  put_rac(c, state, 1);
443  for (j = 0; j < f->context_count[i]; j++)
444  for (k = 0; k < CONTEXT_SIZE; k++) {
445  int pred = j ? f->initial_states[i][j - 1][k] : 128;
446  put_symbol(c, state2[k],
447  (int8_t)(f->initial_states[i][j][k] - pred), 1);
448  }
449  } else {
450  put_rac(c, state, 0);
451  }
452  }
453 
454  if (f->version > 2) {
455  put_symbol(c, state, f->ec, 0);
456  put_symbol(c, state, f->intra = (f->avctx->gop_size < 2), 0);
457  }
458 
462  f->avctx->extradata_size += 4;
463 
464  return 0;
465 }
466 
467 static int sort_stt(FFV1Context *s, uint8_t stt[256])
468 {
469  int i, i2, changed, print = 0;
470 
471  do {
472  changed = 0;
473  for (i = 12; i < 244; i++) {
474  for (i2 = i + 1; i2 < 245 && i2 < i + 4; i2++) {
475 
476 #define COST(old, new) \
477  s->rc_stat[old][0] * -log2((256 - (new)) / 256.0) + \
478  s->rc_stat[old][1] * -log2((new) / 256.0)
479 
480 #define COST2(old, new) \
481  COST(old, new) + COST(256 - (old), 256 - (new))
482 
483  double size0 = COST2(i, i) + COST2(i2, i2);
484  double sizeX = COST2(i, i2) + COST2(i2, i);
485  if (size0 - sizeX > size0*(1e-14) && i != 128 && i2 != 128) {
486  int j;
487  FFSWAP(int, stt[i], stt[i2]);
488  FFSWAP(int, s->rc_stat[i][0], s->rc_stat[i2][0]);
489  FFSWAP(int, s->rc_stat[i][1], s->rc_stat[i2][1]);
490  if (i != 256 - i2) {
491  FFSWAP(int, stt[256 - i], stt[256 - i2]);
492  FFSWAP(int, s->rc_stat[256 - i][0], s->rc_stat[256 - i2][0]);
493  FFSWAP(int, s->rc_stat[256 - i][1], s->rc_stat[256 - i2][1]);
494  }
495  for (j = 1; j < 256; j++) {
496  if (stt[j] == i)
497  stt[j] = i2;
498  else if (stt[j] == i2)
499  stt[j] = i;
500  if (i != 256 - i2) {
501  if (stt[256 - j] == 256 - i)
502  stt[256 - j] = 256 - i2;
503  else if (stt[256 - j] == 256 - i2)
504  stt[256 - j] = 256 - i;
505  }
506  }
507  print = changed = 1;
508  }
509  }
510  }
511  } while (changed);
512  return print;
513 }
514 
516 {
517  FFV1Context *s = avctx->priv_data;
519  int i, j, k, m, ret;
520 
521  if ((ret = ff_ffv1_common_init(avctx)) < 0)
522  return ret;
523 
524  s->version = 0;
525 
526  if ((avctx->flags & (AV_CODEC_FLAG_PASS1 | AV_CODEC_FLAG_PASS2)) ||
527  avctx->slices > 1)
528  s->version = FFMAX(s->version, 2);
529 
530  // Unspecified level & slices, we choose version 1.2+ to ensure multithreaded decodability
531  if (avctx->slices == 0 && avctx->level < 0 && avctx->width * avctx->height > 720*576)
532  s->version = FFMAX(s->version, 2);
533 
534  if (avctx->level <= 0 && s->version == 2) {
535  s->version = 3;
536  }
537  if (avctx->level >= 0 && avctx->level <= 4) {
538  if (avctx->level < s->version) {
539  av_log(avctx, AV_LOG_ERROR, "Version %d needed for requested features but %d requested\n", s->version, avctx->level);
540  return AVERROR(EINVAL);
541  }
542  s->version = avctx->level;
543  }
544 
545  if (s->ec < 0) {
546  s->ec = (s->version >= 3);
547  }
548 
549  if ((s->version == 2 || s->version>3) && avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
550  av_log(avctx, AV_LOG_ERROR, "Version 2 needed for requested features but version 2 is experimental and not enabled\n");
551  return AVERROR_INVALIDDATA;
552  }
553 
554 #if FF_API_CODER_TYPE
556  if (avctx->coder_type != -1)
557  s->ac = avctx->coder_type > 0 ? AC_RANGE_CUSTOM_TAB : AC_GOLOMB_RICE;
558  else
560 #endif
561  if (s->ac == 1) // Compatbility with common command line usage
562  s->ac = AC_RANGE_CUSTOM_TAB;
563  else if (s->ac == AC_RANGE_DEFAULT_TAB_FORCE)
565 
566  s->plane_count = 3;
567  switch(avctx->pix_fmt) {
568  case AV_PIX_FMT_YUV444P9:
569  case AV_PIX_FMT_YUV422P9:
570  case AV_PIX_FMT_YUV420P9:
574  if (!avctx->bits_per_raw_sample)
575  s->bits_per_raw_sample = 9;
582  s->packed_at_lsb = 1;
583  if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample)
584  s->bits_per_raw_sample = 10;
585  case AV_PIX_FMT_GRAY16:
592  if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample) {
593  s->bits_per_raw_sample = 16;
594  } else if (!s->bits_per_raw_sample) {
596  }
597  if (s->bits_per_raw_sample <= 8) {
598  av_log(avctx, AV_LOG_ERROR, "bits_per_raw_sample invalid\n");
599  return AVERROR_INVALIDDATA;
600  }
601  s->version = FFMAX(s->version, 1);
602  case AV_PIX_FMT_GRAY8:
603  case AV_PIX_FMT_YA8:
604  case AV_PIX_FMT_YUV444P:
605  case AV_PIX_FMT_YUV440P:
606  case AV_PIX_FMT_YUV422P:
607  case AV_PIX_FMT_YUV420P:
608  case AV_PIX_FMT_YUV411P:
609  case AV_PIX_FMT_YUV410P:
610  case AV_PIX_FMT_YUVA444P:
611  case AV_PIX_FMT_YUVA422P:
612  case AV_PIX_FMT_YUVA420P:
613  s->chroma_planes = desc->nb_components < 3 ? 0 : 1;
614  s->colorspace = 0;
615  s->transparency = desc->nb_components == 4 || desc->nb_components == 2;
616  if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample)
617  s->bits_per_raw_sample = 8;
618  else if (!s->bits_per_raw_sample)
619  s->bits_per_raw_sample = 8;
620  break;
621  case AV_PIX_FMT_RGB32:
622  s->colorspace = 1;
623  s->transparency = 1;
624  s->chroma_planes = 1;
625  s->bits_per_raw_sample = 8;
626  break;
627  case AV_PIX_FMT_RGB48:
628  s->colorspace = 1;
629  s->chroma_planes = 1;
630  s->bits_per_raw_sample = 16;
631  s->use32bit = 1;
633  av_log(avctx, AV_LOG_ERROR, "16bit RGB is experimental and under development, only use it for experiments\n");
634  return AVERROR_INVALIDDATA;
635  }
636  break;
637  case AV_PIX_FMT_0RGB32:
638  s->colorspace = 1;
639  s->chroma_planes = 1;
640  s->bits_per_raw_sample = 8;
641  break;
642  case AV_PIX_FMT_GBRP9:
643  if (!avctx->bits_per_raw_sample)
644  s->bits_per_raw_sample = 9;
645  case AV_PIX_FMT_GBRP10:
646  if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample)
647  s->bits_per_raw_sample = 10;
648  case AV_PIX_FMT_GBRP12:
649  if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample)
650  s->bits_per_raw_sample = 12;
651  case AV_PIX_FMT_GBRP14:
652  if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample)
653  s->bits_per_raw_sample = 14;
654  case AV_PIX_FMT_GBRP16:
655  if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample)
656  s->bits_per_raw_sample = 16;
657  else if (!s->bits_per_raw_sample)
659  s->colorspace = 1;
660  s->chroma_planes = 1;
661  if (s->bits_per_raw_sample >= 16) {
662  s->use32bit = 1;
664  av_log(avctx, AV_LOG_ERROR, "16bit RGB is experimental and under development, only use it for experiments\n");
665  return AVERROR_INVALIDDATA;
666  }
667  }
668  s->version = FFMAX(s->version, 1);
669  break;
670  default:
671  av_log(avctx, AV_LOG_ERROR, "format not supported\n");
672  return AVERROR(ENOSYS);
673  }
675 
676  if (s->bits_per_raw_sample > 8) {
677  if (s->ac == AC_GOLOMB_RICE) {
678  av_log(avctx, AV_LOG_INFO,
679  "bits_per_raw_sample > 8, forcing range coder\n");
680  s->ac = AC_RANGE_CUSTOM_TAB;
681  }
682  }
683  if (s->transparency) {
684  av_log(avctx, AV_LOG_WARNING, "Storing alpha plane, this will require a recent FFV1 decoder to playback!\n");
685  }
686 #if FF_API_PRIVATE_OPT
688  if (avctx->context_model)
689  s->context_model = avctx->context_model;
690  if (avctx->context_model > 1U) {
691  av_log(avctx, AV_LOG_ERROR, "Invalid context model %d, valid values are 0 and 1\n", avctx->context_model);
692  return AVERROR(EINVAL);
693  }
695 #endif
696 
697  if (s->ac == AC_RANGE_CUSTOM_TAB) {
698  for (i = 1; i < 256; i++)
699  s->state_transition[i] = ver2_state[i];
700  } else {
701  RangeCoder c;
702  ff_build_rac_states(&c, 0.05 * (1LL << 32), 256 - 8);
703  for (i = 1; i < 256; i++)
704  s->state_transition[i] = c.one_state[i];
705  }
706 
707  for (i = 0; i < 256; i++) {
708  s->quant_table_count = 2;
709  if (s->bits_per_raw_sample <= 8) {
710  s->quant_tables[0][0][i]= quant11[i];
711  s->quant_tables[0][1][i]= 11*quant11[i];
712  s->quant_tables[0][2][i]= 11*11*quant11[i];
713  s->quant_tables[1][0][i]= quant11[i];
714  s->quant_tables[1][1][i]= 11*quant11[i];
715  s->quant_tables[1][2][i]= 11*11*quant5 [i];
716  s->quant_tables[1][3][i]= 5*11*11*quant5 [i];
717  s->quant_tables[1][4][i]= 5*5*11*11*quant5 [i];
718  } else {
719  s->quant_tables[0][0][i]= quant9_10bit[i];
720  s->quant_tables[0][1][i]= 11*quant9_10bit[i];
721  s->quant_tables[0][2][i]= 11*11*quant9_10bit[i];
722  s->quant_tables[1][0][i]= quant9_10bit[i];
723  s->quant_tables[1][1][i]= 11*quant9_10bit[i];
724  s->quant_tables[1][2][i]= 11*11*quant5_10bit[i];
725  s->quant_tables[1][3][i]= 5*11*11*quant5_10bit[i];
726  s->quant_tables[1][4][i]= 5*5*11*11*quant5_10bit[i];
727  }
728  }
729  s->context_count[0] = (11 * 11 * 11 + 1) / 2;
730  s->context_count[1] = (11 * 11 * 5 * 5 * 5 + 1) / 2;
731  memcpy(s->quant_table, s->quant_tables[s->context_model],
732  sizeof(s->quant_table));
733 
734  for (i = 0; i < s->plane_count; i++) {
735  PlaneContext *const p = &s->plane[i];
736 
737  memcpy(p->quant_table, s->quant_table, sizeof(p->quant_table));
740  }
741 
742  if ((ret = ff_ffv1_allocate_initial_states(s)) < 0)
743  return ret;
744 
745 #if FF_API_CODED_FRAME
749 #endif
750 
751  if (!s->transparency)
752  s->plane_count = 2;
753  if (!s->chroma_planes && s->version > 3)
754  s->plane_count--;
755 
757  s->picture_number = 0;
758 
759  if (avctx->flags & (AV_CODEC_FLAG_PASS1 | AV_CODEC_FLAG_PASS2)) {
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) {
782  av_log(avctx, AV_LOG_ERROR,
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) {
795  av_log(avctx, AV_LOG_ERROR,
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  s->num_v_slices = (avctx->width > 352 || avctx->height > 288 || !avctx->slices) ? 2 : 1;
851  for (; s->num_v_slices < 9; s->num_v_slices++) {
852  for (s->num_h_slices = s->num_v_slices; s->num_h_slices < 2*s->num_v_slices; s->num_h_slices++) {
853  if (avctx->slices == s->num_h_slices * s->num_v_slices && avctx->slices <= 64 || !avctx->slices)
854  goto slices_ok;
855  }
856  }
857  av_log(avctx, AV_LOG_ERROR,
858  "Unsupported number %d of slices requested, please specify a "
859  "supported number with -slices (ex:4,6,9,12,16, ...)\n",
860  avctx->slices);
861  return AVERROR(ENOSYS);
862 slices_ok:
863  if ((ret = write_extradata(s)) < 0)
864  return ret;
865  }
866 
867  if ((ret = ff_ffv1_init_slice_contexts(s)) < 0)
868  return ret;
870  if ((ret = ff_ffv1_init_slices_state(s)) < 0)
871  return ret;
872 
873 #define STATS_OUT_SIZE 1024 * 1024 * 6
874  if (avctx->flags & AV_CODEC_FLAG_PASS1) {
876  if (!avctx->stats_out)
877  return AVERROR(ENOMEM);
878  for (i = 0; i < s->quant_table_count; i++)
879  for (j = 0; j < s->max_slice_count; j++) {
880  FFV1Context *sf = s->slice_context[j];
881  av_assert0(!sf->rc_stat2[i]);
882  sf->rc_stat2[i] = av_mallocz(s->context_count[i] *
883  sizeof(*sf->rc_stat2[i]));
884  if (!sf->rc_stat2[i])
885  return AVERROR(ENOMEM);
886  }
887  }
888 
889  return 0;
890 }
891 
893 {
894  RangeCoder *c = &fs->c;
896  int j;
897  memset(state, 128, sizeof(state));
898 
899  put_symbol(c, state, (fs->slice_x +1)*f->num_h_slices / f->width , 0);
900  put_symbol(c, state, (fs->slice_y +1)*f->num_v_slices / f->height , 0);
901  put_symbol(c, state, (fs->slice_width +1)*f->num_h_slices / f->width -1, 0);
902  put_symbol(c, state, (fs->slice_height+1)*f->num_v_slices / f->height-1, 0);
903  for (j=0; j<f->plane_count; j++) {
904  put_symbol(c, state, f->plane[j].quant_table_index, 0);
906  }
907  if (!f->picture.f->interlaced_frame)
908  put_symbol(c, state, 3, 0);
909  else
910  put_symbol(c, state, 1 + !f->picture.f->top_field_first, 0);
911  put_symbol(c, state, f->picture.f->sample_aspect_ratio.num, 0);
912  put_symbol(c, state, f->picture.f->sample_aspect_ratio.den, 0);
913  if (f->version > 3) {
914  put_rac(c, state, fs->slice_coding_mode == 1);
915  if (fs->slice_coding_mode == 1)
917  put_symbol(c, state, fs->slice_coding_mode, 0);
918  if (fs->slice_coding_mode != 1) {
919  put_symbol(c, state, fs->slice_rct_by_coef, 0);
920  put_symbol(c, state, fs->slice_rct_ry_coef, 0);
921  }
922  }
923 }
924 
925 static void choose_rct_params(FFV1Context *fs, const uint8_t *src[3], const int stride[3], int w, int h)
926 {
927 #define NB_Y_COEFF 15
928  static const int rct_y_coeff[15][2] = {
929  {0, 0}, // 4G
930  {1, 1}, // R + 2G + B
931  {2, 2}, // 2R + 2B
932  {0, 2}, // 2G + 2B
933  {2, 0}, // 2R + 2G
934  {4, 0}, // 4R
935  {0, 4}, // 4B
936 
937  {0, 3}, // 1G + 3B
938  {3, 0}, // 3R + 1G
939  {3, 1}, // 3R + B
940  {1, 3}, // R + 3B
941  {1, 2}, // R + G + 2B
942  {2, 1}, // 2R + G + B
943  {0, 1}, // 3G + B
944  {1, 0}, // R + 3G
945  };
946 
947  int stat[NB_Y_COEFF] = {0};
948  int x, y, i, p, best;
949  int16_t *sample[3];
950  int lbd = fs->bits_per_raw_sample <= 8;
951 
952  for (y = 0; y < h; y++) {
953  int lastr=0, lastg=0, lastb=0;
954  for (p = 0; p < 3; p++)
955  sample[p] = fs->sample_buffer + p*w;
956 
957  for (x = 0; x < w; x++) {
958  int b, g, r;
959  int ab, ag, ar;
960  if (lbd) {
961  unsigned v = *((const uint32_t*)(src[0] + x*4 + stride[0]*y));
962  b = v & 0xFF;
963  g = (v >> 8) & 0xFF;
964  r = (v >> 16) & 0xFF;
965  } else {
966  b = *((const uint16_t*)(src[0] + x*2 + stride[0]*y));
967  g = *((const uint16_t*)(src[1] + x*2 + stride[1]*y));
968  r = *((const uint16_t*)(src[2] + x*2 + stride[2]*y));
969  }
970 
971  ar = r - lastr;
972  ag = g - lastg;
973  ab = b - lastb;
974  if (x && y) {
975  int bg = ag - sample[0][x];
976  int bb = ab - sample[1][x];
977  int br = ar - sample[2][x];
978 
979  br -= bg;
980  bb -= bg;
981 
982  for (i = 0; i<NB_Y_COEFF; i++) {
983  stat[i] += FFABS(bg + ((br*rct_y_coeff[i][0] + bb*rct_y_coeff[i][1])>>2));
984  }
985 
986  }
987  sample[0][x] = ag;
988  sample[1][x] = ab;
989  sample[2][x] = ar;
990 
991  lastr = r;
992  lastg = g;
993  lastb = b;
994  }
995  }
996 
997  best = 0;
998  for (i=1; i<NB_Y_COEFF; i++) {
999  if (stat[i] < stat[best])
1000  best = i;
1001  }
1002 
1003  fs->slice_rct_by_coef = rct_y_coeff[best][1];
1004  fs->slice_rct_ry_coef = rct_y_coeff[best][0];
1005 }
1006 
1007 static int encode_slice(AVCodecContext *c, void *arg)
1008 {
1009  FFV1Context *fs = *(void **)arg;
1010  FFV1Context *f = fs->avctx->priv_data;
1011  int width = fs->slice_width;
1012  int height = fs->slice_height;
1013  int x = fs->slice_x;
1014  int y = fs->slice_y;
1015  const AVFrame *const p = f->picture.f;
1016  const int ps = av_pix_fmt_desc_get(c->pix_fmt)->comp[0].step;
1017  int ret;
1018  RangeCoder c_bak = fs->c;
1019  const uint8_t *planes[3] = {p->data[0] + ps*x + y*p->linesize[0],
1020  p->data[1] ? p->data[1] + ps*x + y*p->linesize[1] : NULL,
1021  p->data[2] ? p->data[2] + ps*x + y*p->linesize[2] : NULL};
1022 
1023  fs->slice_coding_mode = 0;
1024  if (f->version > 3) {
1025  choose_rct_params(fs, planes, p->linesize, width, height);
1026  } else {
1027  fs->slice_rct_by_coef = 1;
1028  fs->slice_rct_ry_coef = 1;
1029  }
1030 
1031 retry:
1032  if (f->key_frame)
1034  if (f->version > 2) {
1035  encode_slice_header(f, fs);
1036  }
1037  if (fs->ac == AC_GOLOMB_RICE) {
1038  if (f->version > 2)
1039  put_rac(&fs->c, (uint8_t[]) { 129 }, 0);
1040  fs->ac_byte_count = f->version > 2 || (!x && !y) ? ff_rac_terminate(&fs->c) : 0;
1041  init_put_bits(&fs->pb,
1042  fs->c.bytestream_start + fs->ac_byte_count,
1043  fs->c.bytestream_end - fs->c.bytestream_start - fs->ac_byte_count);
1044  }
1045 
1046  if (f->colorspace == 0 && c->pix_fmt != AV_PIX_FMT_YA8) {
1047  const int chroma_width = AV_CEIL_RSHIFT(width, f->chroma_h_shift);
1048  const int chroma_height = AV_CEIL_RSHIFT(height, f->chroma_v_shift);
1049  const int cx = x >> f->chroma_h_shift;
1050  const int cy = y >> f->chroma_v_shift;
1051 
1052  ret = encode_plane(fs, p->data[0] + ps*x + y*p->linesize[0], width, height, p->linesize[0], 0, 1);
1053 
1054  if (f->chroma_planes) {
1055  ret |= encode_plane(fs, p->data[1] + ps*cx+cy*p->linesize[1], chroma_width, chroma_height, p->linesize[1], 1, 1);
1056  ret |= encode_plane(fs, p->data[2] + ps*cx+cy*p->linesize[2], chroma_width, chroma_height, p->linesize[2], 1, 1);
1057  }
1058  if (fs->transparency)
1059  ret |= encode_plane(fs, p->data[3] + ps*x + y*p->linesize[3], width, height, p->linesize[3], 2, 1);
1060  } else if (c->pix_fmt == AV_PIX_FMT_YA8) {
1061  ret = encode_plane(fs, p->data[0] + ps*x + y*p->linesize[0], width, height, p->linesize[0], 0, 2);
1062  ret |= encode_plane(fs, p->data[0] + 1 + ps*x + y*p->linesize[0], width, height, p->linesize[0], 1, 2);
1063  } else if (f->use32bit) {
1064  ret = encode_rgb_frame32(fs, planes, width, height, p->linesize);
1065  } else {
1066  ret = encode_rgb_frame(fs, planes, width, height, p->linesize);
1067  }
1068  emms_c();
1069 
1070  if (ret < 0) {
1071  av_assert0(fs->slice_coding_mode == 0);
1072  if (fs->version < 4 || !fs->ac) {
1073  av_log(c, AV_LOG_ERROR, "Buffer too small\n");
1074  return ret;
1075  }
1076  av_log(c, AV_LOG_DEBUG, "Coding slice as PCM\n");
1077  fs->slice_coding_mode = 1;
1078  fs->c = c_bak;
1079  goto retry;
1080  }
1081 
1082  return 0;
1083 }
1084 
1086  const AVFrame *pict, int *got_packet)
1087 {
1088  FFV1Context *f = avctx->priv_data;
1089  RangeCoder *const c = &f->slice_context[0]->c;
1090  AVFrame *const p = f->picture.f;
1091  int used_count = 0;
1092  uint8_t keystate = 128;
1093  uint8_t *buf_p;
1094  int i, ret;
1095  int64_t maxsize = AV_INPUT_BUFFER_MIN_SIZE
1096  + avctx->width*avctx->height*37LL*4;
1097 
1098  if(!pict) {
1099  if (avctx->flags & AV_CODEC_FLAG_PASS1) {
1100  int j, k, m;
1101  char *p = avctx->stats_out;
1102  char *end = p + STATS_OUT_SIZE;
1103 
1104  memset(f->rc_stat, 0, sizeof(f->rc_stat));
1105  for (i = 0; i < f->quant_table_count; i++)
1106  memset(f->rc_stat2[i], 0, f->context_count[i] * sizeof(*f->rc_stat2[i]));
1107 
1109  for (j = 0; j < f->slice_count; j++) {
1110  FFV1Context *fs = f->slice_context[j];
1111  for (i = 0; i < 256; i++) {
1112  f->rc_stat[i][0] += fs->rc_stat[i][0];
1113  f->rc_stat[i][1] += fs->rc_stat[i][1];
1114  }
1115  for (i = 0; i < f->quant_table_count; i++) {
1116  for (k = 0; k < f->context_count[i]; k++)
1117  for (m = 0; m < 32; m++) {
1118  f->rc_stat2[i][k][m][0] += fs->rc_stat2[i][k][m][0];
1119  f->rc_stat2[i][k][m][1] += fs->rc_stat2[i][k][m][1];
1120  }
1121  }
1122  }
1123 
1124  for (j = 0; j < 256; j++) {
1125  snprintf(p, end - p, "%" PRIu64 " %" PRIu64 " ",
1126  f->rc_stat[j][0], f->rc_stat[j][1]);
1127  p += strlen(p);
1128  }
1129  snprintf(p, end - p, "\n");
1130 
1131  for (i = 0; i < f->quant_table_count; i++) {
1132  for (j = 0; j < f->context_count[i]; j++)
1133  for (m = 0; m < 32; m++) {
1134  snprintf(p, end - p, "%" PRIu64 " %" PRIu64 " ",
1135  f->rc_stat2[i][j][m][0], f->rc_stat2[i][j][m][1]);
1136  p += strlen(p);
1137  }
1138  }
1139  snprintf(p, end - p, "%d\n", f->gob_count);
1140  }
1141  return 0;
1142  }
1143 
1144  if (f->version > 3)
1145  maxsize = AV_INPUT_BUFFER_MIN_SIZE + avctx->width*avctx->height*3LL*4;
1146 
1147  if ((ret = ff_alloc_packet2(avctx, pkt, maxsize, 0)) < 0)
1148  return ret;
1149 
1150  ff_init_range_encoder(c, pkt->data, pkt->size);
1151  ff_build_rac_states(c, 0.05 * (1LL << 32), 256 - 8);
1152 
1153  av_frame_unref(p);
1154  if ((ret = av_frame_ref(p, pict)) < 0)
1155  return ret;
1156 #if FF_API_CODED_FRAME
1160 #endif
1161 
1162  if (avctx->gop_size == 0 || f->picture_number % avctx->gop_size == 0) {
1163  put_rac(c, &keystate, 1);
1164  f->key_frame = 1;
1165  f->gob_count++;
1166  write_header(f);
1167  } else {
1168  put_rac(c, &keystate, 0);
1169  f->key_frame = 0;
1170  }
1171 
1172  if (f->ac == AC_RANGE_CUSTOM_TAB) {
1173  int i;
1174  for (i = 1; i < 256; i++) {
1175  c->one_state[i] = f->state_transition[i];
1176  c->zero_state[256 - i] = 256 - c->one_state[i];
1177  }
1178  }
1179 
1180  for (i = 1; i < f->slice_count; i++) {
1181  FFV1Context *fs = f->slice_context[i];
1182  uint8_t *start = pkt->data + (pkt->size - used_count) * (int64_t)i / f->slice_count;
1183  int len = pkt->size / f->slice_count;
1184  ff_init_range_encoder(&fs->c, start, len);
1185  }
1186  avctx->execute(avctx, encode_slice, &f->slice_context[0], NULL,
1187  f->slice_count, sizeof(void *));
1188 
1189  buf_p = pkt->data;
1190  for (i = 0; i < f->slice_count; i++) {
1191  FFV1Context *fs = f->slice_context[i];
1192  int bytes;
1193 
1194  if (fs->ac != AC_GOLOMB_RICE) {
1195  uint8_t state = 129;
1196  put_rac(&fs->c, &state, 0);
1197  bytes = ff_rac_terminate(&fs->c);
1198  } else {
1199  flush_put_bits(&fs->pb); // FIXME: nicer padding
1200  bytes = fs->ac_byte_count + (put_bits_count(&fs->pb) + 7) / 8;
1201  }
1202  if (i > 0 || f->version > 2) {
1203  av_assert0(bytes < pkt->size / f->slice_count);
1204  memmove(buf_p, fs->c.bytestream_start, bytes);
1205  av_assert0(bytes < (1 << 24));
1206  AV_WB24(buf_p + bytes, bytes);
1207  bytes += 3;
1208  }
1209  if (f->ec) {
1210  unsigned v;
1211  buf_p[bytes++] = 0;
1212  v = av_crc(av_crc_get_table(AV_CRC_32_IEEE), 0, buf_p, bytes);
1213  AV_WL32(buf_p + bytes, v);
1214  bytes += 4;
1215  }
1216  buf_p += bytes;
1217  }
1218 
1219  if (avctx->flags & AV_CODEC_FLAG_PASS1)
1220  avctx->stats_out[0] = '\0';
1221 
1222 #if FF_API_CODED_FRAME
1224  avctx->coded_frame->key_frame = f->key_frame;
1226 #endif
1227 
1228  f->picture_number++;
1229  pkt->size = buf_p - pkt->data;
1230  pkt->pts =
1231  pkt->dts = pict->pts;
1232  pkt->flags |= AV_PKT_FLAG_KEY * f->key_frame;
1233  *got_packet = 1;
1234 
1235  return 0;
1236 }
1237 
1239 {
1240  ff_ffv1_close(avctx);
1241  return 0;
1242 }
1243 
1244 #define OFFSET(x) offsetof(FFV1Context, x)
1245 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
1246 static const AVOption options[] = {
1247  { "slicecrc", "Protect slices with CRCs", OFFSET(ec), AV_OPT_TYPE_BOOL, { .i64 = -1 }, -1, 1, VE },
1248  { "coder", "Coder type", OFFSET(ac), AV_OPT_TYPE_INT,
1249  { .i64 = 0 }, -2, 2, VE, "coder" },
1250  { "rice", "Golomb rice", 0, AV_OPT_TYPE_CONST,
1251  { .i64 = AC_GOLOMB_RICE }, INT_MIN, INT_MAX, VE, "coder" },
1252  { "range_def", "Range with default table", 0, AV_OPT_TYPE_CONST,
1253  { .i64 = AC_RANGE_DEFAULT_TAB_FORCE }, INT_MIN, INT_MAX, VE, "coder" },
1254  { "range_tab", "Range with custom table", 0, AV_OPT_TYPE_CONST,
1255  { .i64 = AC_RANGE_CUSTOM_TAB }, INT_MIN, INT_MAX, VE, "coder" },
1256  { "ac", "Range with custom table (the ac option exists for compatibility and is deprecated)", 0, AV_OPT_TYPE_CONST,
1257  { .i64 = 1 }, INT_MIN, INT_MAX, VE, "coder" },
1258  { "context", "Context model", OFFSET(context_model), AV_OPT_TYPE_INT,
1259  { .i64 = 0 }, 0, 1, VE },
1260 
1261  { NULL }
1262 };
1263 
1264 static const AVClass ffv1_class = {
1265  .class_name = "ffv1 encoder",
1266  .item_name = av_default_item_name,
1267  .option = options,
1268  .version = LIBAVUTIL_VERSION_INT,
1269 };
1270 
1271 #if FF_API_CODER_TYPE
1272 static const AVCodecDefault ffv1_defaults[] = {
1273  { "coder", "-1" },
1274  { NULL },
1275 };
1276 #endif
1277 
1279  .name = "ffv1",
1280  .long_name = NULL_IF_CONFIG_SMALL("FFmpeg video codec #1"),
1281  .type = AVMEDIA_TYPE_VIDEO,
1282  .id = AV_CODEC_ID_FFV1,
1283  .priv_data_size = sizeof(FFV1Context),
1284  .init = encode_init,
1285  .encode2 = encode_frame,
1286  .close = encode_close,
1288  .pix_fmts = (const enum AVPixelFormat[]) {
1302 
1303  },
1304 #if FF_API_CODER_TYPE
1305  .defaults = ffv1_defaults,
1306 #endif
1307  .priv_class = &ffv1_class,
1308 };
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:2898
#define NULL
Definition: coverity.c:32
static const AVCodecDefault ffv1_defaults[]
Definition: ffv1enc.c:1272
#define AV_PIX_FMT_YUVA422P16
Definition: pixfmt.h:380
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:374
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2266
This structure describes decoded (raw) audio or video data.
Definition: frame.h:184
AVOption.
Definition: opt.h:245
static void encode_slice_header(FFV1Context *f, FFV1Context *fs)
Definition: ffv1enc.c:892
#define AV_PIX_FMT_YUVA420P10
Definition: pixfmt.h:376
8 bits gray, 8 bits alpha
Definition: pixfmt.h:154
#define AV_PIX_FMT_YUVA422P10
Definition: pixfmt.h:377
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:67
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:101
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:1601
const char * b
Definition: vf_curves.c:113
#define AV_PIX_FMT_GBRP10
Definition: pixfmt.h:359
int av_log2(unsigned v)
Definition: intmath.c:26
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:1903
char * stats_in
pass2 encoding statistics input buffer Concatenated stuff from stats_out of pass1 should be placed he...
Definition: avcodec.h:2852
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
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
Definition: mem.c:252
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:3076
FF Video Codec 1 (a lossless codec)
#define sample
int height
Definition: ffv1.h:89
AVCodec.
Definition: avcodec.h:3589
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
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:336
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:983
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:102
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:63
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:375
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
Definition: frame.h:268
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:1790
static av_cold int encode_init(AVCodecContext *avctx)
Definition: ffv1enc.c:515
#define AV_PIX_FMT_YUVA420P9
Definition: pixfmt.h:373
#define AV_PIX_FMT_GBRP9
Definition: pixfmt.h:358
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:1600
attribute_deprecated int context_model
Definition: avcodec.h:2734
uint8_t count
Definition: ffv1.h:65
#define ff_dlog(a,...)
static int encode_slice(AVCodecContext *c, void *arg)
Definition: ffv1enc.c:1007
static void choose_rct_params(FFV1Context *fs, const uint8_t *src[3], const int stride[3], int w, int h)
Definition: ffv1enc.c:925
#define AV_PIX_FMT_YUV444P16
Definition: pixfmt.h:356
int interlaced_frame
The content of the picture is interlaced.
Definition: frame.h:318
ptrdiff_t size
Definition: opengl_enc.c:101
char * stats_out
pass1 encoding statistics output buffer
Definition: avcodec.h:2844
#define NB_Y_COEFF
#define AV_PIX_FMT_YUVA420P16
Definition: pixfmt.h:379
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:740
#define av_log(a,...)
static int write_extradata(FFV1Context *f)
Definition: ffv1enc.c:391
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:1632
#define U(x)
Definition: vp56_arith.h:37
static int sort_stt(FFV1Context *s, uint8_t stt[256])
Definition: ffv1enc.c:467
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:187
#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:176
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:381
const char * arg
Definition: jacosubdec.c:66
int flags
AV_CODEC_FLAG_*.
Definition: avcodec.h:1770
#define AV_PIX_FMT_RGB48
Definition: pixfmt.h:329
simple assert() macros that are a bit more flexible than ISO C assert().
const char * name
Name of the codec implementation.
Definition: avcodec.h:3596
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:346
int ff_ffv1_allocate_initial_states(FFV1Context *f)
Definition: ffv1.c:167
#define FFMAX(a, b)
Definition: common.h:94
int flags
A combination of AV_PKT_FLAG values.
Definition: avcodec.h:1606
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:66
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:341
#define av_flatten
Definition: attributes.h:88
static int encode_frame(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *pict, int *got_packet)
Definition: ffv1enc.c:1085
static av_cold int encode_close(AVCodecContext *avctx)
Definition: ffv1enc.c:1238
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:258
#define AV_PIX_FMT_GBRP16
Definition: pixfmt.h:362
#define AV_PIX_FMT_GRAY16
Definition: pixfmt.h:327
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:1862
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:848
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:450
AVCodec ff_ffv1_encoder
Definition: ffv1enc.c:1278
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:3278
av_cold int ff_ffv1_init_slice_contexts(FFV1Context *f)
Definition: ffv1.c:117
#define AV_PIX_FMT_YUVA444P10
Definition: pixfmt.h:378
int ac_byte_count
number of bytes used for AC coding
Definition: ffv1.h:102
int16_t drift
Definition: ffv1.h:62
#define src
Definition: vp9dsp.c:530
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
#define AV_PIX_FMT_YUV444P9
Definition: pixfmt.h:342
#define AV_PIX_FMT_GBRP14
Definition: pixfmt.h:361
attribute_deprecated int coder_type
Definition: avcodec.h:2728
#define VE
Definition: ffv1enc.c:1245
static const AVOption options[]
Definition: ffv1enc.c:1246
static const float pred[4]
Definition: siprdata.h:259
#define AV_PIX_FMT_YUV420P16
Definition: pixfmt.h:354
#define AV_CODEC_CAP_SLICE_THREADS
Codec supports slice-based (or partition-based) multithreading.
Definition: avcodec.h:1025
#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:215
#define STATS_OUT_SIZE
planar YUV 4:4:4 32bpp, (1 Cr & Cb sample per 1x1 Y & A samples)
Definition: pixfmt.h:188
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:1675
#define AV_PIX_FMT_RGB32
Definition: pixfmt.h:320
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:263
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:1791
#define AV_PIX_FMT_YUV420P10
Definition: pixfmt.h:343
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: pixfmt.h:68
static void write_quant_table(RangeCoder *c, int16_t *quant_table)
Definition: ffv1enc.c:321
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:281
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:554
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:1264
#define AV_PIX_FMT_YUV420P9
Definition: pixfmt.h:340
#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:1695
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:262
#define AV_PIX_FMT_GBRP12
Definition: pixfmt.h:360
void av_frame_unref(AVFrame *frame)
Unreference all the buffers referenced by frame and reset the frame fields.
Definition: frame.c:485
static struct @244 state
#define CONTEXT_SIZE
Definition: ffv1.h:51
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:344
int gob_count
Definition: ffv1.h:125
int quant_table_index
Definition: ffv1.h:70
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:198
#define OFFSET(x)
Definition: ffv1enc.c:1244
int gop_size
the number of pictures in a group of pictures, or 0 for intra_only
Definition: avcodec.h:1888
const AVCRC * av_crc_get_table(AVCRCId crc_id)
Get an initialized standard CRC table.
Definition: crc.c:343
#define COST2(old, new)
GLint GLenum GLboolean GLsizei stride
Definition: opengl_enc.c:105
int context_model
Definition: ffv1.h:120
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:62
Y , 8bpp.
Definition: pixfmt.h:70
#define FF_DISABLE_DEPRECATION_WARNINGS
Definition: internal.h:80
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:375
attribute_deprecated AVFrame * coded_frame
the picture in the bitstream
Definition: avcodec.h:3097
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
Definition: pixfmt.h:69
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:733
#define AV_CODEC_FLAG_PASS2
Use internal 2pass ratecontrol in second pass mode.
Definition: avcodec.h:852
int slices
Number of slices.
Definition: avcodec.h:2428
void * priv_data
Definition: avcodec.h:1717
int chroma_h_shift
Definition: ffv1.h:91
PlaneContext plane[MAX_PLANES]
Definition: ffv1.h:103
int transparency
Definition: ffv1.h:92
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:3146
#define FF_ENABLE_DEPRECATION_WARNINGS
Definition: internal.h:81
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:323
int len
int chroma_planes
Definition: ffv1.h:90
int key_frame
1 -> keyframe, 0-> not
Definition: frame.h:253
static void write_header(FFV1Context *f)
Definition: ffv1enc.c:344
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:1599
#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:100
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
exp golomb vlc stuff
AVPixelFormat
Pixel format.
Definition: pixfmt.h:60
This structure stores compressed data.
Definition: avcodec.h:1577
AVCodecContext * avctx
Definition: ffv1.h:81
int strict_std_compliance
strictly follow the standard (MPEG-4, ...).
Definition: avcodec.h:2893
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:355
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
Definition: avcodec.h:1593
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:426
#define AV_PIX_FMT_0RGB32
Definition: pixfmt.h:324
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:58
int slice_rct_ry_coef
Definition: ffv1.h:140
bitstream writer API