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;
632  s->version = FFMAX(s->version, 1);
634  av_log(avctx, AV_LOG_ERROR, "16bit RGB is experimental and under development, only use it for experiments\n");
635  return AVERROR_INVALIDDATA;
636  }
637  break;
638  case AV_PIX_FMT_0RGB32:
639  s->colorspace = 1;
640  s->chroma_planes = 1;
641  s->bits_per_raw_sample = 8;
642  break;
643  case AV_PIX_FMT_GBRP9:
644  if (!avctx->bits_per_raw_sample)
645  s->bits_per_raw_sample = 9;
646  case AV_PIX_FMT_GBRP10:
647  if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample)
648  s->bits_per_raw_sample = 10;
649  case AV_PIX_FMT_GBRP12:
650  if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample)
651  s->bits_per_raw_sample = 12;
652  case AV_PIX_FMT_GBRP14:
653  if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample)
654  s->bits_per_raw_sample = 14;
655  case AV_PIX_FMT_GBRP16:
656  if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample)
657  s->bits_per_raw_sample = 16;
658  else if (!s->bits_per_raw_sample)
660  s->colorspace = 1;
661  s->chroma_planes = 1;
662  if (s->bits_per_raw_sample >= 16) {
663  s->use32bit = 1;
665  av_log(avctx, AV_LOG_ERROR, "16bit RGB is experimental and under development, only use it for experiments\n");
666  return AVERROR_INVALIDDATA;
667  }
668  }
669  s->version = FFMAX(s->version, 1);
670  break;
671  default:
672  av_log(avctx, AV_LOG_ERROR, "format not supported\n");
673  return AVERROR(ENOSYS);
674  }
676 
677  if (s->bits_per_raw_sample > 8) {
678  if (s->ac == AC_GOLOMB_RICE) {
679  av_log(avctx, AV_LOG_INFO,
680  "bits_per_raw_sample > 8, forcing range coder\n");
681  s->ac = AC_RANGE_CUSTOM_TAB;
682  }
683  }
684  if (s->transparency) {
685  av_log(avctx, AV_LOG_WARNING, "Storing alpha plane, this will require a recent FFV1 decoder to playback!\n");
686  }
687 #if FF_API_PRIVATE_OPT
689  if (avctx->context_model)
690  s->context_model = avctx->context_model;
691  if (avctx->context_model > 1U) {
692  av_log(avctx, AV_LOG_ERROR, "Invalid context model %d, valid values are 0 and 1\n", avctx->context_model);
693  return AVERROR(EINVAL);
694  }
696 #endif
697 
698  if (s->ac == AC_RANGE_CUSTOM_TAB) {
699  for (i = 1; i < 256; i++)
700  s->state_transition[i] = ver2_state[i];
701  } else {
702  RangeCoder c;
703  ff_build_rac_states(&c, 0.05 * (1LL << 32), 256 - 8);
704  for (i = 1; i < 256; i++)
705  s->state_transition[i] = c.one_state[i];
706  }
707 
708  for (i = 0; i < 256; i++) {
709  s->quant_table_count = 2;
710  if (s->bits_per_raw_sample <= 8) {
711  s->quant_tables[0][0][i]= quant11[i];
712  s->quant_tables[0][1][i]= 11*quant11[i];
713  s->quant_tables[0][2][i]= 11*11*quant11[i];
714  s->quant_tables[1][0][i]= quant11[i];
715  s->quant_tables[1][1][i]= 11*quant11[i];
716  s->quant_tables[1][2][i]= 11*11*quant5 [i];
717  s->quant_tables[1][3][i]= 5*11*11*quant5 [i];
718  s->quant_tables[1][4][i]= 5*5*11*11*quant5 [i];
719  } else {
720  s->quant_tables[0][0][i]= quant9_10bit[i];
721  s->quant_tables[0][1][i]= 11*quant9_10bit[i];
722  s->quant_tables[0][2][i]= 11*11*quant9_10bit[i];
723  s->quant_tables[1][0][i]= quant9_10bit[i];
724  s->quant_tables[1][1][i]= 11*quant9_10bit[i];
725  s->quant_tables[1][2][i]= 11*11*quant5_10bit[i];
726  s->quant_tables[1][3][i]= 5*11*11*quant5_10bit[i];
727  s->quant_tables[1][4][i]= 5*5*11*11*quant5_10bit[i];
728  }
729  }
730  s->context_count[0] = (11 * 11 * 11 + 1) / 2;
731  s->context_count[1] = (11 * 11 * 5 * 5 * 5 + 1) / 2;
732  memcpy(s->quant_table, s->quant_tables[s->context_model],
733  sizeof(s->quant_table));
734 
735  for (i = 0; i < s->plane_count; i++) {
736  PlaneContext *const p = &s->plane[i];
737 
738  memcpy(p->quant_table, s->quant_table, sizeof(p->quant_table));
741  }
742 
743  if ((ret = ff_ffv1_allocate_initial_states(s)) < 0)
744  return ret;
745 
746 #if FF_API_CODED_FRAME
750 #endif
751 
752  if (!s->transparency)
753  s->plane_count = 2;
754  if (!s->chroma_planes && s->version > 3)
755  s->plane_count--;
756 
758  s->picture_number = 0;
759 
760  if (avctx->flags & (AV_CODEC_FLAG_PASS1 | AV_CODEC_FLAG_PASS2)) {
761  for (i = 0; i < s->quant_table_count; i++) {
762  s->rc_stat2[i] = av_mallocz(s->context_count[i] *
763  sizeof(*s->rc_stat2[i]));
764  if (!s->rc_stat2[i])
765  return AVERROR(ENOMEM);
766  }
767  }
768  if (avctx->stats_in) {
769  char *p = avctx->stats_in;
770  uint8_t (*best_state)[256] = av_malloc_array(256, 256);
771  int gob_count = 0;
772  char *next;
773  if (!best_state)
774  return AVERROR(ENOMEM);
775 
776  av_assert0(s->version >= 2);
777 
778  for (;;) {
779  for (j = 0; j < 256; j++)
780  for (i = 0; i < 2; i++) {
781  s->rc_stat[j][i] = strtol(p, &next, 0);
782  if (next == p) {
783  av_log(avctx, AV_LOG_ERROR,
784  "2Pass file invalid at %d %d [%s]\n", j, i, p);
785  av_freep(&best_state);
786  return AVERROR_INVALIDDATA;
787  }
788  p = next;
789  }
790  for (i = 0; i < s->quant_table_count; i++)
791  for (j = 0; j < s->context_count[i]; j++) {
792  for (k = 0; k < 32; k++)
793  for (m = 0; m < 2; m++) {
794  s->rc_stat2[i][j][k][m] = strtol(p, &next, 0);
795  if (next == p) {
796  av_log(avctx, AV_LOG_ERROR,
797  "2Pass file invalid at %d %d %d %d [%s]\n",
798  i, j, k, m, p);
799  av_freep(&best_state);
800  return AVERROR_INVALIDDATA;
801  }
802  p = next;
803  }
804  }
805  gob_count = strtol(p, &next, 0);
806  if (next == p || gob_count <= 0) {
807  av_log(avctx, AV_LOG_ERROR, "2Pass file invalid\n");
808  av_freep(&best_state);
809  return AVERROR_INVALIDDATA;
810  }
811  p = next;
812  while (*p == '\n' || *p == ' ')
813  p++;
814  if (p[0] == 0)
815  break;
816  }
817  if (s->ac == AC_RANGE_CUSTOM_TAB)
818  sort_stt(s, s->state_transition);
819 
820  find_best_state(best_state, s->state_transition);
821 
822  for (i = 0; i < s->quant_table_count; i++) {
823  for (k = 0; k < 32; k++) {
824  double a=0, b=0;
825  int jp = 0;
826  for (j = 0; j < s->context_count[i]; j++) {
827  double p = 128;
828  if (s->rc_stat2[i][j][k][0] + s->rc_stat2[i][j][k][1] > 200 && j || a+b > 200) {
829  if (a+b)
830  p = 256.0 * b / (a + b);
831  s->initial_states[i][jp][k] =
832  best_state[av_clip(round(p), 1, 255)][av_clip_uint8((a + b) / gob_count)];
833  for(jp++; jp<j; jp++)
834  s->initial_states[i][jp][k] = s->initial_states[i][jp-1][k];
835  a=b=0;
836  }
837  a += s->rc_stat2[i][j][k][0];
838  b += s->rc_stat2[i][j][k][1];
839  if (a+b) {
840  p = 256.0 * b / (a + b);
841  }
842  s->initial_states[i][j][k] =
843  best_state[av_clip(round(p), 1, 255)][av_clip_uint8((a + b) / gob_count)];
844  }
845  }
846  }
847  av_freep(&best_state);
848  }
849 
850  if (s->version > 1) {
851  s->num_v_slices = (avctx->width > 352 || avctx->height > 288 || !avctx->slices) ? 2 : 1;
852  for (; s->num_v_slices < 9; s->num_v_slices++) {
853  for (s->num_h_slices = s->num_v_slices; s->num_h_slices < 2*s->num_v_slices; s->num_h_slices++) {
854  if (avctx->slices == s->num_h_slices * s->num_v_slices && avctx->slices <= 64 || !avctx->slices)
855  goto slices_ok;
856  }
857  }
858  av_log(avctx, AV_LOG_ERROR,
859  "Unsupported number %d of slices requested, please specify a "
860  "supported number with -slices (ex:4,6,9,12,16, ...)\n",
861  avctx->slices);
862  return AVERROR(ENOSYS);
863 slices_ok:
864  if ((ret = write_extradata(s)) < 0)
865  return ret;
866  }
867 
868  if ((ret = ff_ffv1_init_slice_contexts(s)) < 0)
869  return ret;
871  if ((ret = ff_ffv1_init_slices_state(s)) < 0)
872  return ret;
873 
874 #define STATS_OUT_SIZE 1024 * 1024 * 6
875  if (avctx->flags & AV_CODEC_FLAG_PASS1) {
877  if (!avctx->stats_out)
878  return AVERROR(ENOMEM);
879  for (i = 0; i < s->quant_table_count; i++)
880  for (j = 0; j < s->max_slice_count; j++) {
881  FFV1Context *sf = s->slice_context[j];
882  av_assert0(!sf->rc_stat2[i]);
883  sf->rc_stat2[i] = av_mallocz(s->context_count[i] *
884  sizeof(*sf->rc_stat2[i]));
885  if (!sf->rc_stat2[i])
886  return AVERROR(ENOMEM);
887  }
888  }
889 
890  return 0;
891 }
892 
894 {
895  RangeCoder *c = &fs->c;
897  int j;
898  memset(state, 128, sizeof(state));
899 
900  put_symbol(c, state, (fs->slice_x +1)*f->num_h_slices / f->width , 0);
901  put_symbol(c, state, (fs->slice_y +1)*f->num_v_slices / f->height , 0);
902  put_symbol(c, state, (fs->slice_width +1)*f->num_h_slices / f->width -1, 0);
903  put_symbol(c, state, (fs->slice_height+1)*f->num_v_slices / f->height-1, 0);
904  for (j=0; j<f->plane_count; j++) {
905  put_symbol(c, state, f->plane[j].quant_table_index, 0);
907  }
908  if (!f->picture.f->interlaced_frame)
909  put_symbol(c, state, 3, 0);
910  else
911  put_symbol(c, state, 1 + !f->picture.f->top_field_first, 0);
912  put_symbol(c, state, f->picture.f->sample_aspect_ratio.num, 0);
913  put_symbol(c, state, f->picture.f->sample_aspect_ratio.den, 0);
914  if (f->version > 3) {
915  put_rac(c, state, fs->slice_coding_mode == 1);
916  if (fs->slice_coding_mode == 1)
918  put_symbol(c, state, fs->slice_coding_mode, 0);
919  if (fs->slice_coding_mode != 1) {
920  put_symbol(c, state, fs->slice_rct_by_coef, 0);
921  put_symbol(c, state, fs->slice_rct_ry_coef, 0);
922  }
923  }
924 }
925 
926 static void choose_rct_params(FFV1Context *fs, const uint8_t *src[3], const int stride[3], int w, int h)
927 {
928 #define NB_Y_COEFF 15
929  static const int rct_y_coeff[15][2] = {
930  {0, 0}, // 4G
931  {1, 1}, // R + 2G + B
932  {2, 2}, // 2R + 2B
933  {0, 2}, // 2G + 2B
934  {2, 0}, // 2R + 2G
935  {4, 0}, // 4R
936  {0, 4}, // 4B
937 
938  {0, 3}, // 1G + 3B
939  {3, 0}, // 3R + 1G
940  {3, 1}, // 3R + B
941  {1, 3}, // R + 3B
942  {1, 2}, // R + G + 2B
943  {2, 1}, // 2R + G + B
944  {0, 1}, // 3G + B
945  {1, 0}, // R + 3G
946  };
947 
948  int stat[NB_Y_COEFF] = {0};
949  int x, y, i, p, best;
950  int16_t *sample[3];
951  int lbd = fs->bits_per_raw_sample <= 8;
952 
953  for (y = 0; y < h; y++) {
954  int lastr=0, lastg=0, lastb=0;
955  for (p = 0; p < 3; p++)
956  sample[p] = fs->sample_buffer + p*w;
957 
958  for (x = 0; x < w; x++) {
959  int b, g, r;
960  int ab, ag, ar;
961  if (lbd) {
962  unsigned v = *((const uint32_t*)(src[0] + x*4 + stride[0]*y));
963  b = v & 0xFF;
964  g = (v >> 8) & 0xFF;
965  r = (v >> 16) & 0xFF;
966  } else {
967  b = *((const uint16_t*)(src[0] + x*2 + stride[0]*y));
968  g = *((const uint16_t*)(src[1] + x*2 + stride[1]*y));
969  r = *((const uint16_t*)(src[2] + x*2 + stride[2]*y));
970  }
971 
972  ar = r - lastr;
973  ag = g - lastg;
974  ab = b - lastb;
975  if (x && y) {
976  int bg = ag - sample[0][x];
977  int bb = ab - sample[1][x];
978  int br = ar - sample[2][x];
979 
980  br -= bg;
981  bb -= bg;
982 
983  for (i = 0; i<NB_Y_COEFF; i++) {
984  stat[i] += FFABS(bg + ((br*rct_y_coeff[i][0] + bb*rct_y_coeff[i][1])>>2));
985  }
986 
987  }
988  sample[0][x] = ag;
989  sample[1][x] = ab;
990  sample[2][x] = ar;
991 
992  lastr = r;
993  lastg = g;
994  lastb = b;
995  }
996  }
997 
998  best = 0;
999  for (i=1; i<NB_Y_COEFF; i++) {
1000  if (stat[i] < stat[best])
1001  best = i;
1002  }
1003 
1004  fs->slice_rct_by_coef = rct_y_coeff[best][1];
1005  fs->slice_rct_ry_coef = rct_y_coeff[best][0];
1006 }
1007 
1008 static int encode_slice(AVCodecContext *c, void *arg)
1009 {
1010  FFV1Context *fs = *(void **)arg;
1011  FFV1Context *f = fs->avctx->priv_data;
1012  int width = fs->slice_width;
1013  int height = fs->slice_height;
1014  int x = fs->slice_x;
1015  int y = fs->slice_y;
1016  const AVFrame *const p = f->picture.f;
1017  const int ps = av_pix_fmt_desc_get(c->pix_fmt)->comp[0].step;
1018  int ret;
1019  RangeCoder c_bak = fs->c;
1020  const uint8_t *planes[3] = {p->data[0] + ps*x + y*p->linesize[0],
1021  p->data[1] ? p->data[1] + ps*x + y*p->linesize[1] : NULL,
1022  p->data[2] ? p->data[2] + ps*x + y*p->linesize[2] : NULL};
1023 
1024  fs->slice_coding_mode = 0;
1025  if (f->version > 3) {
1026  choose_rct_params(fs, planes, p->linesize, width, height);
1027  } else {
1028  fs->slice_rct_by_coef = 1;
1029  fs->slice_rct_ry_coef = 1;
1030  }
1031 
1032 retry:
1033  if (f->key_frame)
1035  if (f->version > 2) {
1036  encode_slice_header(f, fs);
1037  }
1038  if (fs->ac == AC_GOLOMB_RICE) {
1039  if (f->version > 2)
1040  put_rac(&fs->c, (uint8_t[]) { 129 }, 0);
1041  fs->ac_byte_count = f->version > 2 || (!x && !y) ? ff_rac_terminate(&fs->c) : 0;
1042  init_put_bits(&fs->pb,
1043  fs->c.bytestream_start + fs->ac_byte_count,
1044  fs->c.bytestream_end - fs->c.bytestream_start - fs->ac_byte_count);
1045  }
1046 
1047  if (f->colorspace == 0 && c->pix_fmt != AV_PIX_FMT_YA8) {
1048  const int chroma_width = AV_CEIL_RSHIFT(width, f->chroma_h_shift);
1049  const int chroma_height = AV_CEIL_RSHIFT(height, f->chroma_v_shift);
1050  const int cx = x >> f->chroma_h_shift;
1051  const int cy = y >> f->chroma_v_shift;
1052 
1053  ret = encode_plane(fs, p->data[0] + ps*x + y*p->linesize[0], width, height, p->linesize[0], 0, 1);
1054 
1055  if (f->chroma_planes) {
1056  ret |= encode_plane(fs, p->data[1] + ps*cx+cy*p->linesize[1], chroma_width, chroma_height, p->linesize[1], 1, 1);
1057  ret |= encode_plane(fs, p->data[2] + ps*cx+cy*p->linesize[2], chroma_width, chroma_height, p->linesize[2], 1, 1);
1058  }
1059  if (fs->transparency)
1060  ret |= encode_plane(fs, p->data[3] + ps*x + y*p->linesize[3], width, height, p->linesize[3], 2, 1);
1061  } else if (c->pix_fmt == AV_PIX_FMT_YA8) {
1062  ret = encode_plane(fs, p->data[0] + ps*x + y*p->linesize[0], width, height, p->linesize[0], 0, 2);
1063  ret |= encode_plane(fs, p->data[0] + 1 + ps*x + y*p->linesize[0], width, height, p->linesize[0], 1, 2);
1064  } else if (f->use32bit) {
1065  ret = encode_rgb_frame32(fs, planes, width, height, p->linesize);
1066  } else {
1067  ret = encode_rgb_frame(fs, planes, width, height, p->linesize);
1068  }
1069  emms_c();
1070 
1071  if (ret < 0) {
1072  av_assert0(fs->slice_coding_mode == 0);
1073  if (fs->version < 4 || !fs->ac) {
1074  av_log(c, AV_LOG_ERROR, "Buffer too small\n");
1075  return ret;
1076  }
1077  av_log(c, AV_LOG_DEBUG, "Coding slice as PCM\n");
1078  fs->slice_coding_mode = 1;
1079  fs->c = c_bak;
1080  goto retry;
1081  }
1082 
1083  return 0;
1084 }
1085 
1087  const AVFrame *pict, int *got_packet)
1088 {
1089  FFV1Context *f = avctx->priv_data;
1090  RangeCoder *const c = &f->slice_context[0]->c;
1091  AVFrame *const p = f->picture.f;
1092  int used_count = 0;
1093  uint8_t keystate = 128;
1094  uint8_t *buf_p;
1095  int i, ret;
1096  int64_t maxsize = AV_INPUT_BUFFER_MIN_SIZE
1097  + avctx->width*avctx->height*37LL*4;
1098 
1099  if(!pict) {
1100  if (avctx->flags & AV_CODEC_FLAG_PASS1) {
1101  int j, k, m;
1102  char *p = avctx->stats_out;
1103  char *end = p + STATS_OUT_SIZE;
1104 
1105  memset(f->rc_stat, 0, sizeof(f->rc_stat));
1106  for (i = 0; i < f->quant_table_count; i++)
1107  memset(f->rc_stat2[i], 0, f->context_count[i] * sizeof(*f->rc_stat2[i]));
1108 
1110  for (j = 0; j < f->slice_count; j++) {
1111  FFV1Context *fs = f->slice_context[j];
1112  for (i = 0; i < 256; i++) {
1113  f->rc_stat[i][0] += fs->rc_stat[i][0];
1114  f->rc_stat[i][1] += fs->rc_stat[i][1];
1115  }
1116  for (i = 0; i < f->quant_table_count; i++) {
1117  for (k = 0; k < f->context_count[i]; k++)
1118  for (m = 0; m < 32; m++) {
1119  f->rc_stat2[i][k][m][0] += fs->rc_stat2[i][k][m][0];
1120  f->rc_stat2[i][k][m][1] += fs->rc_stat2[i][k][m][1];
1121  }
1122  }
1123  }
1124 
1125  for (j = 0; j < 256; j++) {
1126  snprintf(p, end - p, "%" PRIu64 " %" PRIu64 " ",
1127  f->rc_stat[j][0], f->rc_stat[j][1]);
1128  p += strlen(p);
1129  }
1130  snprintf(p, end - p, "\n");
1131 
1132  for (i = 0; i < f->quant_table_count; i++) {
1133  for (j = 0; j < f->context_count[i]; j++)
1134  for (m = 0; m < 32; m++) {
1135  snprintf(p, end - p, "%" PRIu64 " %" PRIu64 " ",
1136  f->rc_stat2[i][j][m][0], f->rc_stat2[i][j][m][1]);
1137  p += strlen(p);
1138  }
1139  }
1140  snprintf(p, end - p, "%d\n", f->gob_count);
1141  }
1142  return 0;
1143  }
1144 
1145  if (f->version > 3)
1146  maxsize = AV_INPUT_BUFFER_MIN_SIZE + avctx->width*avctx->height*3LL*4;
1147 
1148  if ((ret = ff_alloc_packet2(avctx, pkt, maxsize, 0)) < 0)
1149  return ret;
1150 
1151  ff_init_range_encoder(c, pkt->data, pkt->size);
1152  ff_build_rac_states(c, 0.05 * (1LL << 32), 256 - 8);
1153 
1154  av_frame_unref(p);
1155  if ((ret = av_frame_ref(p, pict)) < 0)
1156  return ret;
1157 #if FF_API_CODED_FRAME
1161 #endif
1162 
1163  if (avctx->gop_size == 0 || f->picture_number % avctx->gop_size == 0) {
1164  put_rac(c, &keystate, 1);
1165  f->key_frame = 1;
1166  f->gob_count++;
1167  write_header(f);
1168  } else {
1169  put_rac(c, &keystate, 0);
1170  f->key_frame = 0;
1171  }
1172 
1173  if (f->ac == AC_RANGE_CUSTOM_TAB) {
1174  int i;
1175  for (i = 1; i < 256; i++) {
1176  c->one_state[i] = f->state_transition[i];
1177  c->zero_state[256 - i] = 256 - c->one_state[i];
1178  }
1179  }
1180 
1181  for (i = 1; i < f->slice_count; i++) {
1182  FFV1Context *fs = f->slice_context[i];
1183  uint8_t *start = pkt->data + (pkt->size - used_count) * (int64_t)i / f->slice_count;
1184  int len = pkt->size / f->slice_count;
1185  ff_init_range_encoder(&fs->c, start, len);
1186  }
1187  avctx->execute(avctx, encode_slice, &f->slice_context[0], NULL,
1188  f->slice_count, sizeof(void *));
1189 
1190  buf_p = pkt->data;
1191  for (i = 0; i < f->slice_count; i++) {
1192  FFV1Context *fs = f->slice_context[i];
1193  int bytes;
1194 
1195  if (fs->ac != AC_GOLOMB_RICE) {
1196  uint8_t state = 129;
1197  put_rac(&fs->c, &state, 0);
1198  bytes = ff_rac_terminate(&fs->c);
1199  } else {
1200  flush_put_bits(&fs->pb); // FIXME: nicer padding
1201  bytes = fs->ac_byte_count + (put_bits_count(&fs->pb) + 7) / 8;
1202  }
1203  if (i > 0 || f->version > 2) {
1204  av_assert0(bytes < pkt->size / f->slice_count);
1205  memmove(buf_p, fs->c.bytestream_start, bytes);
1206  av_assert0(bytes < (1 << 24));
1207  AV_WB24(buf_p + bytes, bytes);
1208  bytes += 3;
1209  }
1210  if (f->ec) {
1211  unsigned v;
1212  buf_p[bytes++] = 0;
1213  v = av_crc(av_crc_get_table(AV_CRC_32_IEEE), 0, buf_p, bytes);
1214  AV_WL32(buf_p + bytes, v);
1215  bytes += 4;
1216  }
1217  buf_p += bytes;
1218  }
1219 
1220  if (avctx->flags & AV_CODEC_FLAG_PASS1)
1221  avctx->stats_out[0] = '\0';
1222 
1223 #if FF_API_CODED_FRAME
1225  avctx->coded_frame->key_frame = f->key_frame;
1227 #endif
1228 
1229  f->picture_number++;
1230  pkt->size = buf_p - pkt->data;
1231  pkt->pts =
1232  pkt->dts = pict->pts;
1233  pkt->flags |= AV_PKT_FLAG_KEY * f->key_frame;
1234  *got_packet = 1;
1235 
1236  return 0;
1237 }
1238 
1240 {
1241  ff_ffv1_close(avctx);
1242  return 0;
1243 }
1244 
1245 #define OFFSET(x) offsetof(FFV1Context, x)
1246 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
1247 static const AVOption options[] = {
1248  { "slicecrc", "Protect slices with CRCs", OFFSET(ec), AV_OPT_TYPE_BOOL, { .i64 = -1 }, -1, 1, VE },
1249  { "coder", "Coder type", OFFSET(ac), AV_OPT_TYPE_INT,
1250  { .i64 = 0 }, -2, 2, VE, "coder" },
1251  { "rice", "Golomb rice", 0, AV_OPT_TYPE_CONST,
1252  { .i64 = AC_GOLOMB_RICE }, INT_MIN, INT_MAX, VE, "coder" },
1253  { "range_def", "Range with default table", 0, AV_OPT_TYPE_CONST,
1254  { .i64 = AC_RANGE_DEFAULT_TAB_FORCE }, INT_MIN, INT_MAX, VE, "coder" },
1255  { "range_tab", "Range with custom table", 0, AV_OPT_TYPE_CONST,
1256  { .i64 = AC_RANGE_CUSTOM_TAB }, INT_MIN, INT_MAX, VE, "coder" },
1257  { "ac", "Range with custom table (the ac option exists for compatibility and is deprecated)", 0, AV_OPT_TYPE_CONST,
1258  { .i64 = 1 }, INT_MIN, INT_MAX, VE, "coder" },
1259  { "context", "Context model", OFFSET(context_model), AV_OPT_TYPE_INT,
1260  { .i64 = 0 }, 0, 1, VE },
1261 
1262  { NULL }
1263 };
1264 
1265 static const AVClass ffv1_class = {
1266  .class_name = "ffv1 encoder",
1267  .item_name = av_default_item_name,
1268  .option = options,
1269  .version = LIBAVUTIL_VERSION_INT,
1270 };
1271 
1272 #if FF_API_CODER_TYPE
1273 static const AVCodecDefault ffv1_defaults[] = {
1274  { "coder", "-1" },
1275  { NULL },
1276 };
1277 #endif
1278 
1280  .name = "ffv1",
1281  .long_name = NULL_IF_CONFIG_SMALL("FFmpeg video codec #1"),
1282  .type = AVMEDIA_TYPE_VIDEO,
1283  .id = AV_CODEC_ID_FFV1,
1284  .priv_data_size = sizeof(FFV1Context),
1285  .init = encode_init,
1286  .encode2 = encode_frame,
1287  .close = encode_close,
1289  .pix_fmts = (const enum AVPixelFormat[]) {
1303 
1304  },
1305 #if FF_API_CODER_TYPE
1306  .defaults = ffv1_defaults,
1307 #endif
1308  .priv_class = &ffv1_class,
1309 };
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:2899
#define NULL
Definition: coverity.c:32
static const AVCodecDefault ffv1_defaults[]
Definition: ffv1enc.c:1273
#define AV_PIX_FMT_YUVA422P16
Definition: pixfmt.h:378
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:372
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:893
#define AV_PIX_FMT_YUVA420P10
Definition: pixfmt.h:374
8 bits gray, 8 bits alpha
Definition: pixfmt.h:154
#define AV_PIX_FMT_YUVA422P10
Definition: pixfmt.h:375
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:1602
const char * b
Definition: vf_curves.c:113
#define AV_PIX_FMT_GBRP10
Definition: pixfmt.h:357
int av_log2(unsigned v)
Definition: intmath.c:26
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:1904
char * stats_in
pass2 encoding statistics input buffer Concatenated stuff from stats_out of pass1 should be placed he...
Definition: avcodec.h:2853
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:3077
FF Video Codec 1 (a lossless codec)
#define sample
int height
Definition: ffv1.h:89
AVCodec.
Definition: avcodec.h:3600
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:984
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: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:383
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:1791
static av_cold int encode_init(AVCodecContext *avctx)
Definition: ffv1enc.c:515
#define AV_PIX_FMT_YUVA420P9
Definition: pixfmt.h:371
#define AV_PIX_FMT_GBRP9
Definition: pixfmt.h:356
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:1601
attribute_deprecated int context_model
Definition: avcodec.h:2735
uint8_t count
Definition: ffv1.h:65
#define ff_dlog(a,...)
static int encode_slice(AVCodecContext *c, void *arg)
Definition: ffv1enc.c:1008
static void choose_rct_params(FFV1Context *fs, const uint8_t *src[3], const int stride[3], int w, int h)
Definition: ffv1enc.c:926
#define AV_PIX_FMT_YUV444P16
Definition: pixfmt.h:354
int interlaced_frame
The content of the picture is interlaced.
Definition: frame.h:322
ptrdiff_t size
Definition: opengl_enc.c:101
char * stats_out
pass1 encoding statistics output buffer
Definition: avcodec.h:2845
#define NB_Y_COEFF
#define AV_PIX_FMT_YUVA420P16
Definition: pixfmt.h:377
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:741
#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:1633
#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:188
#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:379
const char * arg
Definition: jacosubdec.c:66
int flags
AV_CODEC_FLAG_*.
Definition: avcodec.h:1771
#define AV_PIX_FMT_RGB48
Definition: pixfmt.h:327
simple assert() macros that are a bit more flexible than ISO C assert().
const char * name
Name of the codec implementation.
Definition: avcodec.h:3607
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:344
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:1607
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:339
#define av_flatten
Definition: attributes.h:88
static int encode_frame(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *pict, int *got_packet)
Definition: ffv1enc.c:1086
static av_cold int encode_close(AVCodecContext *avctx)
Definition: ffv1enc.c:1239
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:360
#define AV_PIX_FMT_GRAY16
Definition: pixfmt.h:325
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:1863
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:849
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:1279
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:3279
av_cold int ff_ffv1_init_slice_contexts(FFV1Context *f)
Definition: ffv1.c:117
#define AV_PIX_FMT_YUVA444P10
Definition: pixfmt.h:376
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:340
#define AV_PIX_FMT_GBRP14
Definition: pixfmt.h:359
attribute_deprecated int coder_type
Definition: avcodec.h:2729
#define VE
Definition: ffv1enc.c:1246
static const AVOption options[]
Definition: ffv1enc.c:1247
static const float pred[4]
Definition: siprdata.h:259
#define AV_PIX_FMT_YUV420P16
Definition: pixfmt.h:352
#define AV_CODEC_CAP_SLICE_THREADS
Codec supports slice-based (or partition-based) multithreading.
Definition: avcodec.h:1026
#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:189
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:1676
#define AV_PIX_FMT_RGB32
Definition: pixfmt.h:318
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 struct @246 state
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:1792
#define AV_PIX_FMT_YUV420P10
Definition: pixfmt.h:341
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:1265
#define AV_PIX_FMT_YUV420P9
Definition: pixfmt.h:338
#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:1722
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:262
#define AV_PIX_FMT_GBRP12
Definition: pixfmt.h:358
void av_frame_unref(AVFrame *frame)
Unreference all the buffers referenced by frame and reset the frame fields.
Definition: frame.c:493
#define CONTEXT_SIZE
Definition: ffv1.h:51
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:342
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:1245
int gop_size
the number of pictures in a group of pictures, or 0 for intra_only
Definition: avcodec.h:1889
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:373
attribute_deprecated AVFrame * coded_frame
the picture in the bitstream
Definition: avcodec.h:3098
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:734
#define AV_CODEC_FLAG_PASS2
Use internal 2pass ratecontrol in second pass mode.
Definition: avcodec.h:853
int slices
Number of slices.
Definition: avcodec.h:2429
void * priv_data
Definition: avcodec.h:1718
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:3147
#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:327
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:1600
#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:1578
AVCodecContext * avctx
Definition: ffv1.h:81
int strict_std_compliance
strictly follow the standard (MPEG-4, ...).
Definition: avcodec.h:2894
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:353
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
Definition: avcodec.h:1594
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:322
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:58
int slice_rct_ry_coef
Definition: ffv1.h:140
bitstream writer API