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  code = v ^ ((2 * state->drift + state->count) >> 31);
256 
257  ff_dlog(NULL, "v:%d/%d bias:%d error:%d drift:%d count:%d k:%d\n", v, code,
258  state->bias, state->error_sum, state->drift, state->count, k);
259  set_sr_golomb(pb, code, k, 12, bits);
260 
261  update_vlc_state(state, v);
262 }
263 
264 #define TYPE int16_t
265 #define RENAME(name) name
266 #include "ffv1enc_template.c"
267 #undef TYPE
268 #undef RENAME
269 
270 #define TYPE int32_t
271 #define RENAME(name) name ## 32
272 #include "ffv1enc_template.c"
273 
274 static int encode_plane(FFV1Context *s, uint8_t *src, int w, int h,
275  int stride, int plane_index, int pixel_stride)
276 {
277  int x, y, i, ret;
278  const int ring_size = s->context_model ? 3 : 2;
279  int16_t *sample[3];
280  s->run_index = 0;
281 
282  memset(s->sample_buffer, 0, ring_size * (w + 6) * sizeof(*s->sample_buffer));
283 
284  for (y = 0; y < h; y++) {
285  for (i = 0; i < ring_size; i++)
286  sample[i] = s->sample_buffer + (w + 6) * ((h + i - y) % ring_size) + 3;
287 
288  sample[0][-1]= sample[1][0 ];
289  sample[1][ w]= sample[1][w-1];
290 // { START_TIMER
291  if (s->bits_per_raw_sample <= 8) {
292  for (x = 0; x < w; x++)
293  sample[0][x] = src[x * pixel_stride + stride * y];
294  if((ret = encode_line(s, w, sample, plane_index, 8)) < 0)
295  return ret;
296  } else {
297  if (s->packed_at_lsb) {
298  for (x = 0; x < w; x++) {
299  sample[0][x] = ((uint16_t*)(src + stride*y))[x];
300  }
301  } else {
302  for (x = 0; x < w; x++) {
303  sample[0][x] = ((uint16_t*)(src + stride*y))[x] >> (16 - s->bits_per_raw_sample);
304  }
305  }
306  if((ret = encode_line(s, w, sample, plane_index, s->bits_per_raw_sample)) < 0)
307  return ret;
308  }
309 // STOP_TIMER("encode line") }
310  }
311  return 0;
312 }
313 
314 static void write_quant_table(RangeCoder *c, int16_t *quant_table)
315 {
316  int last = 0;
317  int i;
319  memset(state, 128, sizeof(state));
320 
321  for (i = 1; i < 128; i++)
322  if (quant_table[i] != quant_table[i - 1]) {
323  put_symbol(c, state, i - last - 1, 0);
324  last = i;
325  }
326  put_symbol(c, state, i - last - 1, 0);
327 }
328 
330  int16_t quant_table[MAX_CONTEXT_INPUTS][256])
331 {
332  int i;
333  for (i = 0; i < 5; i++)
335 }
336 
337 static void write_header(FFV1Context *f)
338 {
340  int i, j;
341  RangeCoder *const c = &f->slice_context[0]->c;
342 
343  memset(state, 128, sizeof(state));
344 
345  if (f->version < 2) {
346  put_symbol(c, state, f->version, 0);
347  put_symbol(c, state, f->ac, 0);
348  if (f->ac == AC_RANGE_CUSTOM_TAB) {
349  for (i = 1; i < 256; i++)
350  put_symbol(c, state,
351  f->state_transition[i] - c->one_state[i], 1);
352  }
353  put_symbol(c, state, f->colorspace, 0); //YUV cs type
354  if (f->version > 0)
355  put_symbol(c, state, f->bits_per_raw_sample, 0);
356  put_rac(c, state, f->chroma_planes);
357  put_symbol(c, state, f->chroma_h_shift, 0);
358  put_symbol(c, state, f->chroma_v_shift, 0);
359  put_rac(c, state, f->transparency);
360 
362  } else if (f->version < 3) {
363  put_symbol(c, state, f->slice_count, 0);
364  for (i = 0; i < f->slice_count; i++) {
365  FFV1Context *fs = f->slice_context[i];
366  put_symbol(c, state,
367  (fs->slice_x + 1) * f->num_h_slices / f->width, 0);
368  put_symbol(c, state,
369  (fs->slice_y + 1) * f->num_v_slices / f->height, 0);
370  put_symbol(c, state,
371  (fs->slice_width + 1) * f->num_h_slices / f->width - 1,
372  0);
373  put_symbol(c, state,
374  (fs->slice_height + 1) * f->num_v_slices / f->height - 1,
375  0);
376  for (j = 0; j < f->plane_count; j++) {
377  put_symbol(c, state, f->plane[j].quant_table_index, 0);
379  }
380  }
381  }
382 }
383 
385 {
386  RangeCoder *const c = &f->c;
388  int i, j, k;
389  uint8_t state2[32][CONTEXT_SIZE];
390  unsigned v;
391 
392  memset(state2, 128, sizeof(state2));
393  memset(state, 128, sizeof(state));
394 
395  f->avctx->extradata_size = 10000 + 4 +
396  (11 * 11 * 5 * 5 * 5 + 11 * 11 * 11) * 32;
398  if (!f->avctx->extradata)
399  return AVERROR(ENOMEM);
401  ff_build_rac_states(c, 0.05 * (1LL << 32), 256 - 8);
402 
403  put_symbol(c, state, f->version, 0);
404  if (f->version > 2) {
405  if (f->version == 3) {
406  f->micro_version = 4;
407  } else if (f->version == 4)
408  f->micro_version = 2;
409  put_symbol(c, state, f->micro_version, 0);
410  }
411 
412  put_symbol(c, state, f->ac, 0);
413  if (f->ac == AC_RANGE_CUSTOM_TAB)
414  for (i = 1; i < 256; i++)
415  put_symbol(c, state, f->state_transition[i] - c->one_state[i], 1);
416 
417  put_symbol(c, state, f->colorspace, 0); // YUV cs type
418  put_symbol(c, state, f->bits_per_raw_sample, 0);
419  put_rac(c, state, f->chroma_planes);
420  put_symbol(c, state, f->chroma_h_shift, 0);
421  put_symbol(c, state, f->chroma_v_shift, 0);
422  put_rac(c, state, f->transparency);
423  put_symbol(c, state, f->num_h_slices - 1, 0);
424  put_symbol(c, state, f->num_v_slices - 1, 0);
425 
426  put_symbol(c, state, f->quant_table_count, 0);
427  for (i = 0; i < f->quant_table_count; i++)
429 
430  for (i = 0; i < f->quant_table_count; i++) {
431  for (j = 0; j < f->context_count[i] * CONTEXT_SIZE; j++)
432  if (f->initial_states[i] && f->initial_states[i][0][j] != 128)
433  break;
434  if (j < f->context_count[i] * CONTEXT_SIZE) {
435  put_rac(c, state, 1);
436  for (j = 0; j < f->context_count[i]; j++)
437  for (k = 0; k < CONTEXT_SIZE; k++) {
438  int pred = j ? f->initial_states[i][j - 1][k] : 128;
439  put_symbol(c, state2[k],
440  (int8_t)(f->initial_states[i][j][k] - pred), 1);
441  }
442  } else {
443  put_rac(c, state, 0);
444  }
445  }
446 
447  if (f->version > 2) {
448  put_symbol(c, state, f->ec, 0);
449  put_symbol(c, state, f->intra = (f->avctx->gop_size < 2), 0);
450  }
451 
455  f->avctx->extradata_size += 4;
456 
457  return 0;
458 }
459 
460 static int sort_stt(FFV1Context *s, uint8_t stt[256])
461 {
462  int i, i2, changed, print = 0;
463 
464  do {
465  changed = 0;
466  for (i = 12; i < 244; i++) {
467  for (i2 = i + 1; i2 < 245 && i2 < i + 4; i2++) {
468 
469 #define COST(old, new) \
470  s->rc_stat[old][0] * -log2((256 - (new)) / 256.0) + \
471  s->rc_stat[old][1] * -log2((new) / 256.0)
472 
473 #define COST2(old, new) \
474  COST(old, new) + COST(256 - (old), 256 - (new))
475 
476  double size0 = COST2(i, i) + COST2(i2, i2);
477  double sizeX = COST2(i, i2) + COST2(i2, i);
478  if (size0 - sizeX > size0*(1e-14) && i != 128 && i2 != 128) {
479  int j;
480  FFSWAP(int, stt[i], stt[i2]);
481  FFSWAP(int, s->rc_stat[i][0], s->rc_stat[i2][0]);
482  FFSWAP(int, s->rc_stat[i][1], s->rc_stat[i2][1]);
483  if (i != 256 - i2) {
484  FFSWAP(int, stt[256 - i], stt[256 - i2]);
485  FFSWAP(int, s->rc_stat[256 - i][0], s->rc_stat[256 - i2][0]);
486  FFSWAP(int, s->rc_stat[256 - i][1], s->rc_stat[256 - i2][1]);
487  }
488  for (j = 1; j < 256; j++) {
489  if (stt[j] == i)
490  stt[j] = i2;
491  else if (stt[j] == i2)
492  stt[j] = i;
493  if (i != 256 - i2) {
494  if (stt[256 - j] == 256 - i)
495  stt[256 - j] = 256 - i2;
496  else if (stt[256 - j] == 256 - i2)
497  stt[256 - j] = 256 - i;
498  }
499  }
500  print = changed = 1;
501  }
502  }
503  }
504  } while (changed);
505  return print;
506 }
507 
509 {
510  FFV1Context *s = avctx->priv_data;
512  int i, j, k, m, ret;
513 
514  if ((ret = ff_ffv1_common_init(avctx)) < 0)
515  return ret;
516 
517  s->version = 0;
518 
519  if ((avctx->flags & (AV_CODEC_FLAG_PASS1 | AV_CODEC_FLAG_PASS2)) ||
520  avctx->slices > 1)
521  s->version = FFMAX(s->version, 2);
522 
523  // Unspecified level & slices, we choose version 1.2+ to ensure multithreaded decodability
524  if (avctx->slices == 0 && avctx->level < 0 && avctx->width * avctx->height > 720*576)
525  s->version = FFMAX(s->version, 2);
526 
527  if (avctx->level <= 0 && s->version == 2) {
528  s->version = 3;
529  }
530  if (avctx->level >= 0 && avctx->level <= 4) {
531  if (avctx->level < s->version) {
532  av_log(avctx, AV_LOG_ERROR, "Version %d needed for requested features but %d requested\n", s->version, avctx->level);
533  return AVERROR(EINVAL);
534  }
535  s->version = avctx->level;
536  }
537 
538  if (s->ec < 0) {
539  s->ec = (s->version >= 3);
540  }
541 
542  if ((s->version == 2 || s->version>3) && avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
543  av_log(avctx, AV_LOG_ERROR, "Version 2 needed for requested features but version 2 is experimental and not enabled\n");
544  return AVERROR_INVALIDDATA;
545  }
546 
547 #if FF_API_CODER_TYPE
549  if (avctx->coder_type != -1)
550  s->ac = avctx->coder_type > 0 ? AC_RANGE_CUSTOM_TAB : AC_GOLOMB_RICE;
551  else
553 #endif
554  if (s->ac == 1) // Compatbility with common command line usage
555  s->ac = AC_RANGE_CUSTOM_TAB;
556  else if (s->ac == AC_RANGE_DEFAULT_TAB_FORCE)
558 
559  s->plane_count = 3;
560  switch(avctx->pix_fmt) {
561  case AV_PIX_FMT_YUV444P9:
562  case AV_PIX_FMT_YUV422P9:
563  case AV_PIX_FMT_YUV420P9:
567  if (!avctx->bits_per_raw_sample)
568  s->bits_per_raw_sample = 9;
569  case AV_PIX_FMT_GRAY10:
576  if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample)
577  s->bits_per_raw_sample = 10;
578  case AV_PIX_FMT_GRAY12:
582  s->packed_at_lsb = 1;
583  if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample)
584  s->bits_per_raw_sample = 12;
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  int plane_count = 1 + 2*s->chroma_planes + s->transparency;
852  int max_h_slices = AV_CEIL_RSHIFT(avctx->width , s->chroma_h_shift);
853  int max_v_slices = AV_CEIL_RSHIFT(avctx->height, s->chroma_v_shift);
854  s->num_v_slices = (avctx->width > 352 || avctx->height > 288 || !avctx->slices) ? 2 : 1;
855 
856  s->num_v_slices = FFMIN(s->num_v_slices, max_v_slices);
857 
858  for (; s->num_v_slices < 32; s->num_v_slices++) {
859  for (s->num_h_slices = s->num_v_slices; s->num_h_slices < 2*s->num_v_slices; s->num_h_slices++) {
860  int maxw = (avctx->width + s->num_h_slices - 1) / s->num_h_slices;
861  int maxh = (avctx->height + s->num_v_slices - 1) / s->num_v_slices;
862  if (s->num_h_slices > max_h_slices || s->num_v_slices > max_v_slices)
863  continue;
864  if (maxw * maxh * (int64_t)(s->bits_per_raw_sample+1) * plane_count > 8<<24)
865  continue;
866  if (avctx->slices == s->num_h_slices * s->num_v_slices && avctx->slices <= MAX_SLICES || !avctx->slices)
867  goto slices_ok;
868  }
869  }
870  av_log(avctx, AV_LOG_ERROR,
871  "Unsupported number %d of slices requested, please specify a "
872  "supported number with -slices (ex:4,6,9,12,16, ...)\n",
873  avctx->slices);
874  return AVERROR(ENOSYS);
875 slices_ok:
876  if ((ret = write_extradata(s)) < 0)
877  return ret;
878  }
879 
880  if ((ret = ff_ffv1_init_slice_contexts(s)) < 0)
881  return ret;
883  if ((ret = ff_ffv1_init_slices_state(s)) < 0)
884  return ret;
885 
886 #define STATS_OUT_SIZE 1024 * 1024 * 6
887  if (avctx->flags & AV_CODEC_FLAG_PASS1) {
889  if (!avctx->stats_out)
890  return AVERROR(ENOMEM);
891  for (i = 0; i < s->quant_table_count; i++)
892  for (j = 0; j < s->max_slice_count; j++) {
893  FFV1Context *sf = s->slice_context[j];
894  av_assert0(!sf->rc_stat2[i]);
895  sf->rc_stat2[i] = av_mallocz(s->context_count[i] *
896  sizeof(*sf->rc_stat2[i]));
897  if (!sf->rc_stat2[i])
898  return AVERROR(ENOMEM);
899  }
900  }
901 
902  return 0;
903 }
904 
906 {
907  RangeCoder *c = &fs->c;
909  int j;
910  memset(state, 128, sizeof(state));
911 
912  put_symbol(c, state, (fs->slice_x +1)*f->num_h_slices / f->width , 0);
913  put_symbol(c, state, (fs->slice_y +1)*f->num_v_slices / f->height , 0);
914  put_symbol(c, state, (fs->slice_width +1)*f->num_h_slices / f->width -1, 0);
915  put_symbol(c, state, (fs->slice_height+1)*f->num_v_slices / f->height-1, 0);
916  for (j=0; j<f->plane_count; j++) {
917  put_symbol(c, state, f->plane[j].quant_table_index, 0);
919  }
920  if (!f->picture.f->interlaced_frame)
921  put_symbol(c, state, 3, 0);
922  else
923  put_symbol(c, state, 1 + !f->picture.f->top_field_first, 0);
924  put_symbol(c, state, f->picture.f->sample_aspect_ratio.num, 0);
925  put_symbol(c, state, f->picture.f->sample_aspect_ratio.den, 0);
926  if (f->version > 3) {
927  put_rac(c, state, fs->slice_coding_mode == 1);
928  if (fs->slice_coding_mode == 1)
930  put_symbol(c, state, fs->slice_coding_mode, 0);
931  if (fs->slice_coding_mode != 1) {
932  put_symbol(c, state, fs->slice_rct_by_coef, 0);
933  put_symbol(c, state, fs->slice_rct_ry_coef, 0);
934  }
935  }
936 }
937 
938 static void choose_rct_params(FFV1Context *fs, const uint8_t *src[3], const int stride[3], int w, int h)
939 {
940 #define NB_Y_COEFF 15
941  static const int rct_y_coeff[15][2] = {
942  {0, 0}, // 4G
943  {1, 1}, // R + 2G + B
944  {2, 2}, // 2R + 2B
945  {0, 2}, // 2G + 2B
946  {2, 0}, // 2R + 2G
947  {4, 0}, // 4R
948  {0, 4}, // 4B
949 
950  {0, 3}, // 1G + 3B
951  {3, 0}, // 3R + 1G
952  {3, 1}, // 3R + B
953  {1, 3}, // R + 3B
954  {1, 2}, // R + G + 2B
955  {2, 1}, // 2R + G + B
956  {0, 1}, // 3G + B
957  {1, 0}, // R + 3G
958  };
959 
960  int stat[NB_Y_COEFF] = {0};
961  int x, y, i, p, best;
962  int16_t *sample[3];
963  int lbd = fs->bits_per_raw_sample <= 8;
964 
965  for (y = 0; y < h; y++) {
966  int lastr=0, lastg=0, lastb=0;
967  for (p = 0; p < 3; p++)
968  sample[p] = fs->sample_buffer + p*w;
969 
970  for (x = 0; x < w; x++) {
971  int b, g, r;
972  int ab, ag, ar;
973  if (lbd) {
974  unsigned v = *((const uint32_t*)(src[0] + x*4 + stride[0]*y));
975  b = v & 0xFF;
976  g = (v >> 8) & 0xFF;
977  r = (v >> 16) & 0xFF;
978  } else {
979  b = *((const uint16_t*)(src[0] + x*2 + stride[0]*y));
980  g = *((const uint16_t*)(src[1] + x*2 + stride[1]*y));
981  r = *((const uint16_t*)(src[2] + x*2 + stride[2]*y));
982  }
983 
984  ar = r - lastr;
985  ag = g - lastg;
986  ab = b - lastb;
987  if (x && y) {
988  int bg = ag - sample[0][x];
989  int bb = ab - sample[1][x];
990  int br = ar - sample[2][x];
991 
992  br -= bg;
993  bb -= bg;
994 
995  for (i = 0; i<NB_Y_COEFF; i++) {
996  stat[i] += FFABS(bg + ((br*rct_y_coeff[i][0] + bb*rct_y_coeff[i][1])>>2));
997  }
998 
999  }
1000  sample[0][x] = ag;
1001  sample[1][x] = ab;
1002  sample[2][x] = ar;
1003 
1004  lastr = r;
1005  lastg = g;
1006  lastb = b;
1007  }
1008  }
1009 
1010  best = 0;
1011  for (i=1; i<NB_Y_COEFF; i++) {
1012  if (stat[i] < stat[best])
1013  best = i;
1014  }
1015 
1016  fs->slice_rct_by_coef = rct_y_coeff[best][1];
1017  fs->slice_rct_ry_coef = rct_y_coeff[best][0];
1018 }
1019 
1020 static int encode_slice(AVCodecContext *c, void *arg)
1021 {
1022  FFV1Context *fs = *(void **)arg;
1023  FFV1Context *f = fs->avctx->priv_data;
1024  int width = fs->slice_width;
1025  int height = fs->slice_height;
1026  int x = fs->slice_x;
1027  int y = fs->slice_y;
1028  const AVFrame *const p = f->picture.f;
1029  const int ps = av_pix_fmt_desc_get(c->pix_fmt)->comp[0].step;
1030  int ret;
1031  RangeCoder c_bak = fs->c;
1032  const uint8_t *planes[3] = {p->data[0] + ps*x + y*p->linesize[0],
1033  p->data[1] ? p->data[1] + ps*x + y*p->linesize[1] : NULL,
1034  p->data[2] ? p->data[2] + ps*x + y*p->linesize[2] : NULL};
1035 
1036  fs->slice_coding_mode = 0;
1037  if (f->version > 3) {
1038  choose_rct_params(fs, planes, p->linesize, width, height);
1039  } else {
1040  fs->slice_rct_by_coef = 1;
1041  fs->slice_rct_ry_coef = 1;
1042  }
1043 
1044 retry:
1045  if (f->key_frame)
1047  if (f->version > 2) {
1048  encode_slice_header(f, fs);
1049  }
1050  if (fs->ac == AC_GOLOMB_RICE) {
1051  if (f->version > 2)
1052  put_rac(&fs->c, (uint8_t[]) { 129 }, 0);
1053  fs->ac_byte_count = f->version > 2 || (!x && !y) ? ff_rac_terminate(&fs->c) : 0;
1054  init_put_bits(&fs->pb,
1055  fs->c.bytestream_start + fs->ac_byte_count,
1056  fs->c.bytestream_end - fs->c.bytestream_start - fs->ac_byte_count);
1057  }
1058 
1059  if (f->colorspace == 0 && c->pix_fmt != AV_PIX_FMT_YA8) {
1060  const int chroma_width = AV_CEIL_RSHIFT(width, f->chroma_h_shift);
1061  const int chroma_height = AV_CEIL_RSHIFT(height, f->chroma_v_shift);
1062  const int cx = x >> f->chroma_h_shift;
1063  const int cy = y >> f->chroma_v_shift;
1064 
1065  ret = encode_plane(fs, p->data[0] + ps*x + y*p->linesize[0], width, height, p->linesize[0], 0, 1);
1066 
1067  if (f->chroma_planes) {
1068  ret |= encode_plane(fs, p->data[1] + ps*cx+cy*p->linesize[1], chroma_width, chroma_height, p->linesize[1], 1, 1);
1069  ret |= encode_plane(fs, p->data[2] + ps*cx+cy*p->linesize[2], chroma_width, chroma_height, p->linesize[2], 1, 1);
1070  }
1071  if (fs->transparency)
1072  ret |= encode_plane(fs, p->data[3] + ps*x + y*p->linesize[3], width, height, p->linesize[3], 2, 1);
1073  } else if (c->pix_fmt == AV_PIX_FMT_YA8) {
1074  ret = encode_plane(fs, p->data[0] + ps*x + y*p->linesize[0], width, height, p->linesize[0], 0, 2);
1075  ret |= encode_plane(fs, p->data[0] + 1 + ps*x + y*p->linesize[0], width, height, p->linesize[0], 1, 2);
1076  } else if (f->use32bit) {
1077  ret = encode_rgb_frame32(fs, planes, width, height, p->linesize);
1078  } else {
1079  ret = encode_rgb_frame(fs, planes, width, height, p->linesize);
1080  }
1081  emms_c();
1082 
1083  if (ret < 0) {
1084  av_assert0(fs->slice_coding_mode == 0);
1085  if (fs->version < 4 || !fs->ac) {
1086  av_log(c, AV_LOG_ERROR, "Buffer too small\n");
1087  return ret;
1088  }
1089  av_log(c, AV_LOG_DEBUG, "Coding slice as PCM\n");
1090  fs->slice_coding_mode = 1;
1091  fs->c = c_bak;
1092  goto retry;
1093  }
1094 
1095  return 0;
1096 }
1097 
1099  const AVFrame *pict, int *got_packet)
1100 {
1101  FFV1Context *f = avctx->priv_data;
1102  RangeCoder *const c = &f->slice_context[0]->c;
1103  AVFrame *const p = f->picture.f;
1104  uint8_t keystate = 128;
1105  uint8_t *buf_p;
1106  int i, ret;
1107  int64_t maxsize = AV_INPUT_BUFFER_MIN_SIZE
1108  + avctx->width*avctx->height*37LL*4;
1109 
1110  if(!pict) {
1111  if (avctx->flags & AV_CODEC_FLAG_PASS1) {
1112  int j, k, m;
1113  char *p = avctx->stats_out;
1114  char *end = p + STATS_OUT_SIZE;
1115 
1116  memset(f->rc_stat, 0, sizeof(f->rc_stat));
1117  for (i = 0; i < f->quant_table_count; i++)
1118  memset(f->rc_stat2[i], 0, f->context_count[i] * sizeof(*f->rc_stat2[i]));
1119 
1121  for (j = 0; j < f->slice_count; j++) {
1122  FFV1Context *fs = f->slice_context[j];
1123  for (i = 0; i < 256; i++) {
1124  f->rc_stat[i][0] += fs->rc_stat[i][0];
1125  f->rc_stat[i][1] += fs->rc_stat[i][1];
1126  }
1127  for (i = 0; i < f->quant_table_count; i++) {
1128  for (k = 0; k < f->context_count[i]; k++)
1129  for (m = 0; m < 32; m++) {
1130  f->rc_stat2[i][k][m][0] += fs->rc_stat2[i][k][m][0];
1131  f->rc_stat2[i][k][m][1] += fs->rc_stat2[i][k][m][1];
1132  }
1133  }
1134  }
1135 
1136  for (j = 0; j < 256; j++) {
1137  snprintf(p, end - p, "%" PRIu64 " %" PRIu64 " ",
1138  f->rc_stat[j][0], f->rc_stat[j][1]);
1139  p += strlen(p);
1140  }
1141  snprintf(p, end - p, "\n");
1142 
1143  for (i = 0; i < f->quant_table_count; i++) {
1144  for (j = 0; j < f->context_count[i]; j++)
1145  for (m = 0; m < 32; m++) {
1146  snprintf(p, end - p, "%" PRIu64 " %" PRIu64 " ",
1147  f->rc_stat2[i][j][m][0], f->rc_stat2[i][j][m][1]);
1148  p += strlen(p);
1149  }
1150  }
1151  snprintf(p, end - p, "%d\n", f->gob_count);
1152  }
1153  return 0;
1154  }
1155 
1156  if (f->version > 3)
1157  maxsize = AV_INPUT_BUFFER_MIN_SIZE + avctx->width*avctx->height*3LL*4;
1158 
1159  if (maxsize > INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE - 32) {
1160  av_log(avctx, AV_LOG_WARNING, "Cannot allocate worst case packet size, the encoding could fail\n");
1161  maxsize = INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE - 32;
1162  }
1163 
1164  if ((ret = ff_alloc_packet2(avctx, pkt, maxsize, 0)) < 0)
1165  return ret;
1166 
1167  ff_init_range_encoder(c, pkt->data, pkt->size);
1168  ff_build_rac_states(c, 0.05 * (1LL << 32), 256 - 8);
1169 
1170  av_frame_unref(p);
1171  if ((ret = av_frame_ref(p, pict)) < 0)
1172  return ret;
1173 #if FF_API_CODED_FRAME
1177 #endif
1178 
1179  if (avctx->gop_size == 0 || f->picture_number % avctx->gop_size == 0) {
1180  put_rac(c, &keystate, 1);
1181  f->key_frame = 1;
1182  f->gob_count++;
1183  write_header(f);
1184  } else {
1185  put_rac(c, &keystate, 0);
1186  f->key_frame = 0;
1187  }
1188 
1189  if (f->ac == AC_RANGE_CUSTOM_TAB) {
1190  int i;
1191  for (i = 1; i < 256; i++) {
1192  c->one_state[i] = f->state_transition[i];
1193  c->zero_state[256 - i] = 256 - c->one_state[i];
1194  }
1195  }
1196 
1197  for (i = 0; i < f->slice_count; i++) {
1198  FFV1Context *fs = f->slice_context[i];
1199  uint8_t *start = pkt->data + pkt->size * (int64_t)i / f->slice_count;
1200  int len = pkt->size / f->slice_count;
1201  if (i) {
1202  ff_init_range_encoder(&fs->c, start, len);
1203  } else {
1206  fs->c.bytestream_end = fs->c.bytestream_start + len;
1207  }
1208  }
1209  avctx->execute(avctx, encode_slice, &f->slice_context[0], NULL,
1210  f->slice_count, sizeof(void *));
1211 
1212  buf_p = pkt->data;
1213  for (i = 0; i < f->slice_count; i++) {
1214  FFV1Context *fs = f->slice_context[i];
1215  int bytes;
1216 
1217  if (fs->ac != AC_GOLOMB_RICE) {
1218  uint8_t state = 129;
1219  put_rac(&fs->c, &state, 0);
1220  bytes = ff_rac_terminate(&fs->c);
1221  } else {
1222  flush_put_bits(&fs->pb); // FIXME: nicer padding
1223  bytes = fs->ac_byte_count + (put_bits_count(&fs->pb) + 7) / 8;
1224  }
1225  if (i > 0 || f->version > 2) {
1226  av_assert0(bytes < pkt->size / f->slice_count);
1227  memmove(buf_p, fs->c.bytestream_start, bytes);
1228  av_assert0(bytes < (1 << 24));
1229  AV_WB24(buf_p + bytes, bytes);
1230  bytes += 3;
1231  }
1232  if (f->ec) {
1233  unsigned v;
1234  buf_p[bytes++] = 0;
1235  v = av_crc(av_crc_get_table(AV_CRC_32_IEEE), 0, buf_p, bytes);
1236  AV_WL32(buf_p + bytes, v);
1237  bytes += 4;
1238  }
1239  buf_p += bytes;
1240  }
1241 
1242  if (avctx->flags & AV_CODEC_FLAG_PASS1)
1243  avctx->stats_out[0] = '\0';
1244 
1245 #if FF_API_CODED_FRAME
1247  avctx->coded_frame->key_frame = f->key_frame;
1249 #endif
1250 
1251  f->picture_number++;
1252  pkt->size = buf_p - pkt->data;
1253  pkt->pts =
1254  pkt->dts = pict->pts;
1255  pkt->flags |= AV_PKT_FLAG_KEY * f->key_frame;
1256  *got_packet = 1;
1257 
1258  return 0;
1259 }
1260 
1262 {
1263  ff_ffv1_close(avctx);
1264  return 0;
1265 }
1266 
1267 #define OFFSET(x) offsetof(FFV1Context, x)
1268 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
1269 static const AVOption options[] = {
1270  { "slicecrc", "Protect slices with CRCs", OFFSET(ec), AV_OPT_TYPE_BOOL, { .i64 = -1 }, -1, 1, VE },
1271  { "coder", "Coder type", OFFSET(ac), AV_OPT_TYPE_INT,
1272  { .i64 = 0 }, -2, 2, VE, "coder" },
1273  { "rice", "Golomb rice", 0, AV_OPT_TYPE_CONST,
1274  { .i64 = AC_GOLOMB_RICE }, INT_MIN, INT_MAX, VE, "coder" },
1275  { "range_def", "Range with default table", 0, AV_OPT_TYPE_CONST,
1276  { .i64 = AC_RANGE_DEFAULT_TAB_FORCE }, INT_MIN, INT_MAX, VE, "coder" },
1277  { "range_tab", "Range with custom table", 0, AV_OPT_TYPE_CONST,
1278  { .i64 = AC_RANGE_CUSTOM_TAB }, INT_MIN, INT_MAX, VE, "coder" },
1279  { "ac", "Range with custom table (the ac option exists for compatibility and is deprecated)", 0, AV_OPT_TYPE_CONST,
1280  { .i64 = 1 }, INT_MIN, INT_MAX, VE, "coder" },
1281  { "context", "Context model", OFFSET(context_model), AV_OPT_TYPE_INT,
1282  { .i64 = 0 }, 0, 1, VE },
1283 
1284  { NULL }
1285 };
1286 
1287 static const AVClass ffv1_class = {
1288  .class_name = "ffv1 encoder",
1289  .item_name = av_default_item_name,
1290  .option = options,
1291  .version = LIBAVUTIL_VERSION_INT,
1292 };
1293 
1294 #if FF_API_CODER_TYPE
1295 static const AVCodecDefault ffv1_defaults[] = {
1296  { "coder", "-1" },
1297  { NULL },
1298 };
1299 #endif
1300 
1302  .name = "ffv1",
1303  .long_name = NULL_IF_CONFIG_SMALL("FFmpeg video codec #1"),
1304  .type = AVMEDIA_TYPE_VIDEO,
1305  .id = AV_CODEC_ID_FFV1,
1306  .priv_data_size = sizeof(FFV1Context),
1307  .init = encode_init,
1308  .encode2 = encode_frame,
1309  .close = encode_close,
1311  .pix_fmts = (const enum AVPixelFormat[]) {
1327 
1328  },
1329 #if FF_API_CODER_TYPE
1330  .defaults = ffv1_defaults,
1331 #endif
1332  .priv_class = &ffv1_class,
1333 };
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:2969
#define NULL
Definition: coverity.c:32
static const AVCodecDefault ffv1_defaults[]
Definition: ffv1enc.c:1295
#define AV_PIX_FMT_YUVA422P16
Definition: pixfmt.h:400
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:394
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2337
This structure describes decoded (raw) audio or video data.
Definition: frame.h:194
AVOption.
Definition: opt.h:246
static void encode_slice_header(FFV1Context *f, FFV1Context *fs)
Definition: ffv1enc.c:905
#define AV_PIX_FMT_YUVA420P10
Definition: pixfmt.h:396
8 bits gray, 8 bits alpha
Definition: pixfmt.h:154
#define AV_PIX_FMT_YUVA422P10
Definition: pixfmt.h:397
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:86
int quant_table_count
Definition: ffv1.h:126
const char * g
Definition: vf_curves.c:112
const char * desc
Definition: nvenc.c:60
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
int slice_height
Definition: ffv1.h:134
#define MAX_CONTEXT_INPUTS
Definition: ffv1.h:54
int16_t * sample_buffer
Definition: ffv1.h:111
int version
Definition: ffv1.h:87
int micro_version
Definition: ffv1.h:88
uint8_t zero_state[256]
Definition: rangecoder.h:40
Range coder.
uint8_t * bytestream_end
Definition: rangecoder.h:44
int num
Numerator.
Definition: rational.h:59
int size
Definition: avcodec.h:1671
const char * b
Definition: vf_curves.c:113
#define AV_PIX_FMT_GBRP10
Definition: pixfmt.h:379
int av_log2(unsigned v)
Definition: intmath.c:26
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:1973
#define AV_PIX_FMT_YUV420P12
Definition: pixfmt.h:367
char * stats_in
pass2 encoding statistics input buffer Concatenated stuff from stats_out of pass1 should be placed he...
Definition: avcodec.h:2922
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:222
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:3146
FF Video Codec 1 (a lossless codec)
#define src
Definition: vp8dsp.c:254
#define sample
int height
Definition: ffv1.h:89
AVCodec.
Definition: avcodec.h:3721
uint8_t one_state[256]
Definition: rangecoder.h:41
Macro definitions for various function/variable attributes.
int slice_rct_by_coef
Definition: ffv1.h:139
#define log2(x)
Definition: libm.h:404
#define AV_PIX_FMT_GRAY10
Definition: pixfmt.h:345
int plane_count
Definition: ffv1.h:100
int ff_rac_terminate(RangeCoder *c)
Definition: rangecoder.c:108
static void write_quant_tables(RangeCoder *c, int16_t quant_table[MAX_CONTEXT_INPUTS][256])
Definition: ffv1enc.c:329
#define AV_PIX_FMT_GRAY12
Definition: pixfmt.h:346
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:1025
ThreadFrame picture
Definition: ffv1.h:96
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
int ff_alloc_packet2(AVCodecContext *avctx, AVPacket *avpkt, int64_t size, int64_t min_size)
Check AVPacket size and/or allocate data.
Definition: encode.c:32
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:392
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
Definition: frame.h:287
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:1860
static av_cold int encode_init(AVCodecContext *avctx)
Definition: ffv1enc.c:508
#define AV_PIX_FMT_YUVA420P9
Definition: pixfmt.h:393
#define AV_PIX_FMT_GBRP9
Definition: pixfmt.h:378
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:1670
attribute_deprecated int context_model
Definition: avcodec.h:2804
uint8_t count
Definition: ffv1.h:65
#define ff_dlog(a,...)
static int encode_slice(AVCodecContext *c, void *arg)
Definition: ffv1enc.c:1020
static void choose_rct_params(FFV1Context *fs, const uint8_t *src[3], const int stride[3], int w, int h)
Definition: ffv1enc.c:938
#define AV_PIX_FMT_YUV444P16
Definition: pixfmt.h:376
int interlaced_frame
The content of the picture is interlaced.
Definition: frame.h:341
ptrdiff_t size
Definition: opengl_enc.c:101
#define AV_PIX_FMT_YUV422P12
Definition: pixfmt.h:368
char * stats_out
pass1 encoding statistics output buffer
Definition: avcodec.h:2914
#define NB_Y_COEFF
#define AV_PIX_FMT_YUVA420P16
Definition: pixfmt.h:399
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:782
#define av_log(a,...)
static int write_extradata(FFV1Context *f)
Definition: ffv1enc.c:384
int bits_per_raw_sample
Definition: ffv1.h:122
int slice_width
Definition: ffv1.h:133
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
Definition: avcodec.h:1702
#define U(x)
Definition: vp56_arith.h:37
static int sort_stt(FFV1Context *s, uint8_t stt[256])
Definition: ffv1enc.c:460
static const uint8_t ver2_state[256]
Definition: ffv1enc.c:120
planar YUV 4:2:2 24bpp, (1 Cr & Cb sample per 2x1 Y & A samples)
Definition: pixfmt.h: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:179
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:401
const char * arg
Definition: jacosubdec.c:66
int flags
AV_CODEC_FLAG_*.
Definition: avcodec.h:1840
#define AV_PIX_FMT_RGB48
Definition: pixfmt.h:349
simple assert() macros that are a bit more flexible than ISO C assert().
const char * name
Name of the codec implementation.
Definition: avcodec.h:3728
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:366
int ff_ffv1_allocate_initial_states(FFV1Context *f)
Definition: ffv1.c:167
#define MAX_SLICES
Definition: dxva2_hevc.c:33
#define FFMAX(a, b)
Definition: common.h:94
uint8_t * bytestream
Definition: rangecoder.h:43
int flags
A combination of AV_PKT_FLAG values.
Definition: avcodec.h:1676
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:361
#define av_flatten
Definition: attributes.h:88
static int encode_frame(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *pict, int *got_packet)
Definition: ffv1enc.c:1098
static av_cold int encode_close(AVCodecContext *avctx)
Definition: ffv1enc.c:1261
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:277
#define AV_PIX_FMT_GBRP16
Definition: pixfmt.h:382
#define AV_PIX_FMT_GRAY16
Definition: pixfmt.h:347
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:1932
int colorspace
Definition: ffv1.h:110
static float quant_table[96]
Definition: binkaudio.c:43
#define AV_CODEC_FLAG_PASS1
Use internal 2pass ratecontrol in first pass mode.
Definition: avcodec.h:890
static void update_vlc_state(VlcState *const state, const int v)
Definition: ffv1.h:164
uint32_t av_crc(const AVCRC *ctx, uint32_t crc, const uint8_t *buffer, size_t length)
Calculate the CRC of a block.
Definition: crc.c:357
int slice_count
Definition: ffv1.h:129
#define AV_WB24(p, d)
Definition: intreadwrite.h:455
AVCodec ff_ffv1_encoder
Definition: ffv1enc.c:1301
int max_slice_count
Definition: ffv1.h:130
void ff_build_rac_states(RangeCoder *c, int factor, int max_p)
Definition: rangecoder.c:67
#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:3346
av_cold int ff_ffv1_init_slice_contexts(FFV1Context *f)
Definition: ffv1.c:117
#define AV_PIX_FMT_YUVA444P10
Definition: pixfmt.h:398
int ac_byte_count
number of bytes used for AC coding
Definition: ffv1.h:102
int16_t drift
Definition: ffv1.h:62
void avcodec_get_chroma_sub_sample(enum AVPixelFormat pix_fmt, int *h_shift, int *v_shift)
Utility function to access log2_chroma_w log2_chroma_h from the pixel format AVPixFmtDescriptor.
Definition: imgconvert.c:38
int packed_at_lsb
Definition: ffv1.h:123
#define AV_PIX_FMT_YUV444P9
Definition: pixfmt.h:362
#define AV_PIX_FMT_GBRP14
Definition: pixfmt.h:381
attribute_deprecated int coder_type
Definition: avcodec.h:2798
#define VE
Definition: ffv1enc.c:1268
static const AVOption options[]
Definition: ffv1enc.c:1269
static const float pred[4]
Definition: siprdata.h:259
#define AV_PIX_FMT_YUV420P16
Definition: pixfmt.h:374
#define AV_CODEC_CAP_SLICE_THREADS
Codec supports slice-based (or partition-based) multithreading.
Definition: avcodec.h:1067
#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:225
#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:1745
#define AV_PIX_FMT_RGB32
Definition: pixfmt.h:338
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:282
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:1861
#define AV_PIX_FMT_YUV420P10
Definition: pixfmt.h:363
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:314
Describe the class of an AVClass context structure.
Definition: log.h:67
av_cold void ff_init_range_encoder(RangeCoder *c, uint8_t *buf, int buf_size)
Definition: rangecoder.c:42
int use32bit
Definition: ffv1.h:114
#define AC_GOLOMB_RICE
Definition: ffv1.h:56
static void put_vlc_symbol(PutBitContext *pb, VlcState *const state, int v, int bits)
Definition: ffv1enc.c:240
static int encode_plane(FFV1Context *s, uint8_t *src, int w, int h, int stride, int plane_index, int pixel_stride)
Definition: ffv1enc.c:274
static void set_sr_golomb(PutBitContext *pb, int i, int k, int limit, int esc_len)
write signed golomb rice code (ffv1).
Definition: golomb.h:565
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:1287
#define AV_PIX_FMT_YUV420P9
Definition: pixfmt.h:360
#define snprintf
Definition: snprintf.h:34
static struct @258 state
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:266
#define AV_PIX_FMT_GBRP12
Definition: pixfmt.h:380
void av_frame_unref(AVFrame *frame)
Unreference all the buffers referenced by frame and reset the frame fields.
Definition: frame.c:502
#define CONTEXT_SIZE
Definition: ffv1.h:51
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:364
int gob_count
Definition: ffv1.h:125
int quant_table_index
Definition: ffv1.h:70
#define AV_PIX_FMT_YUV444P12
Definition: pixfmt.h:370
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:208
#define OFFSET(x)
Definition: ffv1enc.c:1267
int gop_size
the number of pictures in a group of pictures, or 0 for intra_only
Definition: avcodec.h:1958
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:83
common internal api header.
static void flush_put_bits(PutBitContext *s)
Pad the end of the output stream with zeros.
Definition: put_bits.h:101
if(ret< 0)
Definition: vf_mcdeint.c:282
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:395
attribute_deprecated AVFrame * coded_frame
the picture in the bitstream
Definition: avcodec.h:3165
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:775
#define AV_CODEC_FLAG_PASS2
Use internal 2pass ratecontrol in second pass mode.
Definition: avcodec.h:894
int slices
Number of slices.
Definition: avcodec.h:2498
void * priv_data
Definition: avcodec.h:1787
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:3214
#define FF_ENABLE_DEPRECATION_WARNINGS
Definition: internal.h:84
int chroma_v_shift
Definition: ffv1.h:91
int top_field_first
If the content is interlaced, is top field displayed first.
Definition: frame.h:346
int len
int chroma_planes
Definition: ffv1.h:90
int key_frame
1 -> keyframe, 0-> not
Definition: frame.h:272
static void write_header(FFV1Context *f)
Definition: ffv1enc.c:337
struct FFV1Context * slice_context[MAX_SLICES]
Definition: ffv1.h:128
int64_t dts
Decompression timestamp in AVStream->time_base units; the time at which the packet is decompressed...
Definition: avcodec.h:1669
#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:1647
AVCodecContext * avctx
Definition: ffv1.h:81
int strict_std_compliance
strictly follow the standard (MPEG-4, ...).
Definition: avcodec.h:2964
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:375
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
Definition: avcodec.h:1663
for(j=16;j >0;--j)
int step
Number of elements between 2 horizontally consecutive pixels.
Definition: pixdesc.h:41
int width
Definition: ffv1.h:89
#define AV_WL32(p, v)
Definition: intreadwrite.h:431
#define AV_PIX_FMT_0RGB32
Definition: pixfmt.h:342
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:58
int slice_rct_ry_coef
Definition: ffv1.h:140
bitstream writer API