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 
185 static av_always_inline av_flatten void put_symbol_inline(RangeCoder *c,
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 
233 static av_noinline void put_symbol(RangeCoder *c, uint8_t *state,
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;
318  uint8_t state[CONTEXT_SIZE];
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 
329 static void write_quant_tables(RangeCoder *c,
330  int16_t quant_table[MAX_CONTEXT_INPUTS][256])
331 {
332  int i;
333  for (i = 0; i < 5; i++)
334  write_quant_table(c, quant_table[i]);
335 }
336 
337 static void write_header(FFV1Context *f)
338 {
339  uint8_t state[CONTEXT_SIZE];
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 
361  write_quant_tables(c, f->quant_table);
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);
378  av_assert0(f->plane[j].quant_table_index == f->context_model);
379  }
380  }
381  }
382 }
383 
384 static int write_extradata(FFV1Context *f)
385 {
386  RangeCoder *const c = &f->c;
387  uint8_t state[CONTEXT_SIZE];
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;
397  f->avctx->extradata = av_malloc(f->avctx->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
398  if (!f->avctx->extradata)
399  return AVERROR(ENOMEM);
400  ff_init_range_encoder(c, f->avctx->extradata, f->avctx->extradata_size);
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++)
428  write_quant_tables(c, f->quant_tables[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 
452  f->avctx->extradata_size = ff_rac_terminate(c);
453  v = av_crc(av_crc_get_table(AV_CRC_32_IEEE), 0, f->avctx->extradata, f->avctx->extradata_size);
454  AV_WL32(f->avctx->extradata + f->avctx->extradata_size, v);
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 
508 static av_cold int encode_init(AVCodecContext *avctx)
509 {
510  FFV1Context *s = avctx->priv_data;
511  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt);
512  int i, j, k, m, ret;
513 
514  if ((ret = ff_ffv1_common_init(avctx)) < 0)
515  return ret;
516 
517  s->version = 0;
518 
519  if ((avctx->flags & (AV_CODEC_FLAG_PASS1 | AV_CODEC_FLAG_PASS2)) ||
520  avctx->slices > 1)
521  s->version = FFMAX(s->version, 2);
522 
523  // Unspecified level & slices, we choose version 1.2+ to ensure multithreaded decodability
524  if (avctx->slices == 0 && avctx->level < 0 && avctx->width * avctx->height > 720*576)
525  s->version = FFMAX(s->version, 2);
526 
527  if (avctx->level <= 0 && s->version == 2) {
528  s->version = 3;
529  }
530  if (avctx->level >= 0 && avctx->level <= 4) {
531  if (avctx->level < s->version) {
532  av_log(avctx, AV_LOG_ERROR, "Version %d needed for requested features but %d requested\n", s->version, avctx->level);
533  return AVERROR(EINVAL);
534  }
535  s->version = avctx->level;
536  }
537 
538  if (s->ec < 0) {
539  s->ec = (s->version >= 3);
540  }
541 
542  // CRC requires version 3+
543  if (s->ec)
544  s->version = FFMAX(s->version, 3);
545 
546  if ((s->version == 2 || s->version>3) && avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
547  av_log(avctx, AV_LOG_ERROR, "Version 2 needed for requested features but version 2 is experimental and not enabled\n");
548  return AVERROR_INVALIDDATA;
549  }
550 
551 #if FF_API_CODER_TYPE
552 FF_DISABLE_DEPRECATION_WARNINGS
553  if (avctx->coder_type != -1)
554  s->ac = avctx->coder_type > 0 ? AC_RANGE_CUSTOM_TAB : AC_GOLOMB_RICE;
555  else
556 FF_ENABLE_DEPRECATION_WARNINGS
557 #endif
558  if (s->ac == 1) // Compatbility with common command line usage
559  s->ac = AC_RANGE_CUSTOM_TAB;
560  else if (s->ac == AC_RANGE_DEFAULT_TAB_FORCE)
561  s->ac = AC_RANGE_DEFAULT_TAB;
562 
563  s->plane_count = 3;
564  switch(avctx->pix_fmt) {
565  case AV_PIX_FMT_GRAY9:
566  case AV_PIX_FMT_YUV444P9:
567  case AV_PIX_FMT_YUV422P9:
568  case AV_PIX_FMT_YUV420P9:
569  case AV_PIX_FMT_YUVA444P9:
570  case AV_PIX_FMT_YUVA422P9:
571  case AV_PIX_FMT_YUVA420P9:
572  if (!avctx->bits_per_raw_sample)
573  s->bits_per_raw_sample = 9;
574  case AV_PIX_FMT_GRAY10:
575  case AV_PIX_FMT_YUV444P10:
576  case AV_PIX_FMT_YUV440P10:
577  case AV_PIX_FMT_YUV420P10:
578  case AV_PIX_FMT_YUV422P10:
579  case AV_PIX_FMT_YUVA444P10:
580  case AV_PIX_FMT_YUVA422P10:
581  case AV_PIX_FMT_YUVA420P10:
582  if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample)
583  s->bits_per_raw_sample = 10;
584  case AV_PIX_FMT_GRAY12:
585  case AV_PIX_FMT_YUV444P12:
586  case AV_PIX_FMT_YUV440P12:
587  case AV_PIX_FMT_YUV420P12:
588  case AV_PIX_FMT_YUV422P12:
589  if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample)
590  s->bits_per_raw_sample = 12;
591  case AV_PIX_FMT_YUV444P14:
592  case AV_PIX_FMT_YUV420P14:
593  case AV_PIX_FMT_YUV422P14:
594  if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample)
595  s->bits_per_raw_sample = 14;
596  s->packed_at_lsb = 1;
597  case AV_PIX_FMT_GRAY16:
598  case AV_PIX_FMT_YUV444P16:
599  case AV_PIX_FMT_YUV422P16:
600  case AV_PIX_FMT_YUV420P16:
601  case AV_PIX_FMT_YUVA444P16:
602  case AV_PIX_FMT_YUVA422P16:
603  case AV_PIX_FMT_YUVA420P16:
604  if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample) {
605  s->bits_per_raw_sample = 16;
606  } else if (!s->bits_per_raw_sample) {
607  s->bits_per_raw_sample = avctx->bits_per_raw_sample;
608  }
609  if (s->bits_per_raw_sample <= 8) {
610  av_log(avctx, AV_LOG_ERROR, "bits_per_raw_sample invalid\n");
611  return AVERROR_INVALIDDATA;
612  }
613  s->version = FFMAX(s->version, 1);
614  case AV_PIX_FMT_GRAY8:
615  case AV_PIX_FMT_YA8:
616  case AV_PIX_FMT_YUV444P:
617  case AV_PIX_FMT_YUV440P:
618  case AV_PIX_FMT_YUV422P:
619  case AV_PIX_FMT_YUV420P:
620  case AV_PIX_FMT_YUV411P:
621  case AV_PIX_FMT_YUV410P:
622  case AV_PIX_FMT_YUVA444P:
623  case AV_PIX_FMT_YUVA422P:
624  case AV_PIX_FMT_YUVA420P:
625  s->chroma_planes = desc->nb_components < 3 ? 0 : 1;
626  s->colorspace = 0;
627  s->transparency = !!(desc->flags & AV_PIX_FMT_FLAG_ALPHA);
628  if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample)
629  s->bits_per_raw_sample = 8;
630  else if (!s->bits_per_raw_sample)
631  s->bits_per_raw_sample = 8;
632  break;
633  case AV_PIX_FMT_RGB32:
634  s->colorspace = 1;
635  s->transparency = 1;
636  s->chroma_planes = 1;
637  s->bits_per_raw_sample = 8;
638  break;
639  case AV_PIX_FMT_RGBA64:
640  s->colorspace = 1;
641  s->transparency = 1;
642  s->chroma_planes = 1;
643  s->bits_per_raw_sample = 16;
644  s->use32bit = 1;
645  s->version = FFMAX(s->version, 1);
646  break;
647  case AV_PIX_FMT_RGB48:
648  s->colorspace = 1;
649  s->chroma_planes = 1;
650  s->bits_per_raw_sample = 16;
651  s->use32bit = 1;
652  s->version = FFMAX(s->version, 1);
653  break;
654  case AV_PIX_FMT_0RGB32:
655  s->colorspace = 1;
656  s->chroma_planes = 1;
657  s->bits_per_raw_sample = 8;
658  break;
659  case AV_PIX_FMT_GBRP9:
660  if (!avctx->bits_per_raw_sample)
661  s->bits_per_raw_sample = 9;
662  case AV_PIX_FMT_GBRP10:
663  case AV_PIX_FMT_GBRAP10:
664  if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample)
665  s->bits_per_raw_sample = 10;
666  case AV_PIX_FMT_GBRP12:
667  case AV_PIX_FMT_GBRAP12:
668  if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample)
669  s->bits_per_raw_sample = 12;
670  case AV_PIX_FMT_GBRP14:
671  if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample)
672  s->bits_per_raw_sample = 14;
673  case AV_PIX_FMT_GBRP16:
674  case AV_PIX_FMT_GBRAP16:
675  if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample)
676  s->bits_per_raw_sample = 16;
677  else if (!s->bits_per_raw_sample)
678  s->bits_per_raw_sample = avctx->bits_per_raw_sample;
679  s->transparency = !!(desc->flags & AV_PIX_FMT_FLAG_ALPHA);
680  s->colorspace = 1;
681  s->chroma_planes = 1;
682  if (s->bits_per_raw_sample >= 16) {
683  s->use32bit = 1;
684  }
685  s->version = FFMAX(s->version, 1);
686  break;
687  default:
688  av_log(avctx, AV_LOG_ERROR, "format not supported\n");
689  return AVERROR(ENOSYS);
690  }
691  av_assert0(s->bits_per_raw_sample >= 8);
692 
693  if (s->bits_per_raw_sample > 8) {
694  if (s->ac == AC_GOLOMB_RICE) {
695  av_log(avctx, AV_LOG_INFO,
696  "bits_per_raw_sample > 8, forcing range coder\n");
697  s->ac = AC_RANGE_CUSTOM_TAB;
698  }
699  }
700 #if FF_API_PRIVATE_OPT
701 FF_DISABLE_DEPRECATION_WARNINGS
702  if (avctx->context_model)
703  s->context_model = avctx->context_model;
704  if (avctx->context_model > 1U) {
705  av_log(avctx, AV_LOG_ERROR, "Invalid context model %d, valid values are 0 and 1\n", avctx->context_model);
706  return AVERROR(EINVAL);
707  }
708 FF_ENABLE_DEPRECATION_WARNINGS
709 #endif
710 
711  if (s->ac == AC_RANGE_CUSTOM_TAB) {
712  for (i = 1; i < 256; i++)
713  s->state_transition[i] = ver2_state[i];
714  } else {
715  RangeCoder c;
716  ff_build_rac_states(&c, 0.05 * (1LL << 32), 256 - 8);
717  for (i = 1; i < 256; i++)
718  s->state_transition[i] = c.one_state[i];
719  }
720 
721  for (i = 0; i < 256; i++) {
722  s->quant_table_count = 2;
723  if (s->bits_per_raw_sample <= 8) {
724  s->quant_tables[0][0][i]= quant11[i];
725  s->quant_tables[0][1][i]= 11*quant11[i];
726  s->quant_tables[0][2][i]= 11*11*quant11[i];
727  s->quant_tables[1][0][i]= quant11[i];
728  s->quant_tables[1][1][i]= 11*quant11[i];
729  s->quant_tables[1][2][i]= 11*11*quant5 [i];
730  s->quant_tables[1][3][i]= 5*11*11*quant5 [i];
731  s->quant_tables[1][4][i]= 5*5*11*11*quant5 [i];
732  } else {
733  s->quant_tables[0][0][i]= quant9_10bit[i];
734  s->quant_tables[0][1][i]= 11*quant9_10bit[i];
735  s->quant_tables[0][2][i]= 11*11*quant9_10bit[i];
736  s->quant_tables[1][0][i]= quant9_10bit[i];
737  s->quant_tables[1][1][i]= 11*quant9_10bit[i];
738  s->quant_tables[1][2][i]= 11*11*quant5_10bit[i];
739  s->quant_tables[1][3][i]= 5*11*11*quant5_10bit[i];
740  s->quant_tables[1][4][i]= 5*5*11*11*quant5_10bit[i];
741  }
742  }
743  s->context_count[0] = (11 * 11 * 11 + 1) / 2;
744  s->context_count[1] = (11 * 11 * 5 * 5 * 5 + 1) / 2;
745  memcpy(s->quant_table, s->quant_tables[s->context_model],
746  sizeof(s->quant_table));
747 
748  for (i = 0; i < s->plane_count; i++) {
749  PlaneContext *const p = &s->plane[i];
750 
751  memcpy(p->quant_table, s->quant_table, sizeof(p->quant_table));
752  p->quant_table_index = s->context_model;
753  p->context_count = s->context_count[p->quant_table_index];
754  }
755 
756  if ((ret = ff_ffv1_allocate_initial_states(s)) < 0)
757  return ret;
758 
759 #if FF_API_CODED_FRAME
760 FF_DISABLE_DEPRECATION_WARNINGS
761  avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
762 FF_ENABLE_DEPRECATION_WARNINGS
763 #endif
764 
765  if (!s->transparency)
766  s->plane_count = 2;
767  if (!s->chroma_planes && s->version > 3)
768  s->plane_count--;
769 
770  ret = av_pix_fmt_get_chroma_sub_sample (avctx->pix_fmt, &s->chroma_h_shift, &s->chroma_v_shift);
771  if (ret)
772  return ret;
773 
774  s->picture_number = 0;
775 
776  if (avctx->flags & (AV_CODEC_FLAG_PASS1 | AV_CODEC_FLAG_PASS2)) {
777  for (i = 0; i < s->quant_table_count; i++) {
778  s->rc_stat2[i] = av_mallocz(s->context_count[i] *
779  sizeof(*s->rc_stat2[i]));
780  if (!s->rc_stat2[i])
781  return AVERROR(ENOMEM);
782  }
783  }
784  if (avctx->stats_in) {
785  char *p = avctx->stats_in;
786  uint8_t (*best_state)[256] = av_malloc_array(256, 256);
787  int gob_count = 0;
788  char *next;
789  if (!best_state)
790  return AVERROR(ENOMEM);
791 
792  av_assert0(s->version >= 2);
793 
794  for (;;) {
795  for (j = 0; j < 256; j++)
796  for (i = 0; i < 2; i++) {
797  s->rc_stat[j][i] = strtol(p, &next, 0);
798  if (next == p) {
799  av_log(avctx, AV_LOG_ERROR,
800  "2Pass file invalid at %d %d [%s]\n", j, i, p);
801  av_freep(&best_state);
802  return AVERROR_INVALIDDATA;
803  }
804  p = next;
805  }
806  for (i = 0; i < s->quant_table_count; i++)
807  for (j = 0; j < s->context_count[i]; j++) {
808  for (k = 0; k < 32; k++)
809  for (m = 0; m < 2; m++) {
810  s->rc_stat2[i][j][k][m] = strtol(p, &next, 0);
811  if (next == p) {
812  av_log(avctx, AV_LOG_ERROR,
813  "2Pass file invalid at %d %d %d %d [%s]\n",
814  i, j, k, m, p);
815  av_freep(&best_state);
816  return AVERROR_INVALIDDATA;
817  }
818  p = next;
819  }
820  }
821  gob_count = strtol(p, &next, 0);
822  if (next == p || gob_count <= 0) {
823  av_log(avctx, AV_LOG_ERROR, "2Pass file invalid\n");
824  av_freep(&best_state);
825  return AVERROR_INVALIDDATA;
826  }
827  p = next;
828  while (*p == '\n' || *p == ' ')
829  p++;
830  if (p[0] == 0)
831  break;
832  }
833  if (s->ac == AC_RANGE_CUSTOM_TAB)
834  sort_stt(s, s->state_transition);
835 
836  find_best_state(best_state, s->state_transition);
837 
838  for (i = 0; i < s->quant_table_count; i++) {
839  for (k = 0; k < 32; k++) {
840  double a=0, b=0;
841  int jp = 0;
842  for (j = 0; j < s->context_count[i]; j++) {
843  double p = 128;
844  if (s->rc_stat2[i][j][k][0] + s->rc_stat2[i][j][k][1] > 200 && j || a+b > 200) {
845  if (a+b)
846  p = 256.0 * b / (a + b);
847  s->initial_states[i][jp][k] =
848  best_state[av_clip(round(p), 1, 255)][av_clip_uint8((a + b) / gob_count)];
849  for(jp++; jp<j; jp++)
850  s->initial_states[i][jp][k] = s->initial_states[i][jp-1][k];
851  a=b=0;
852  }
853  a += s->rc_stat2[i][j][k][0];
854  b += s->rc_stat2[i][j][k][1];
855  if (a+b) {
856  p = 256.0 * b / (a + b);
857  }
858  s->initial_states[i][j][k] =
859  best_state[av_clip(round(p), 1, 255)][av_clip_uint8((a + b) / gob_count)];
860  }
861  }
862  }
863  av_freep(&best_state);
864  }
865 
866  if (s->version > 1) {
867  int plane_count = 1 + 2*s->chroma_planes + s->transparency;
868  int max_h_slices = AV_CEIL_RSHIFT(avctx->width , s->chroma_h_shift);
869  int max_v_slices = AV_CEIL_RSHIFT(avctx->height, s->chroma_v_shift);
870  s->num_v_slices = (avctx->width > 352 || avctx->height > 288 || !avctx->slices) ? 2 : 1;
871 
872  s->num_v_slices = FFMIN(s->num_v_slices, max_v_slices);
873 
874  for (; s->num_v_slices < 32; s->num_v_slices++) {
875  for (s->num_h_slices = s->num_v_slices; s->num_h_slices < 2*s->num_v_slices; s->num_h_slices++) {
876  int maxw = (avctx->width + s->num_h_slices - 1) / s->num_h_slices;
877  int maxh = (avctx->height + s->num_v_slices - 1) / s->num_v_slices;
878  if (s->num_h_slices > max_h_slices || s->num_v_slices > max_v_slices)
879  continue;
880  if (maxw * maxh * (int64_t)(s->bits_per_raw_sample+1) * plane_count > 8<<24)
881  continue;
882  if (avctx->slices == s->num_h_slices * s->num_v_slices && avctx->slices <= MAX_SLICES || !avctx->slices)
883  goto slices_ok;
884  }
885  }
886  av_log(avctx, AV_LOG_ERROR,
887  "Unsupported number %d of slices requested, please specify a "
888  "supported number with -slices (ex:4,6,9,12,16, ...)\n",
889  avctx->slices);
890  return AVERROR(ENOSYS);
891 slices_ok:
892  if ((ret = write_extradata(s)) < 0)
893  return ret;
894  }
895 
896  if ((ret = ff_ffv1_init_slice_contexts(s)) < 0)
897  return ret;
898  s->slice_count = s->max_slice_count;
899  if ((ret = ff_ffv1_init_slices_state(s)) < 0)
900  return ret;
901 
902 #define STATS_OUT_SIZE 1024 * 1024 * 6
903  if (avctx->flags & AV_CODEC_FLAG_PASS1) {
904  avctx->stats_out = av_mallocz(STATS_OUT_SIZE);
905  if (!avctx->stats_out)
906  return AVERROR(ENOMEM);
907  for (i = 0; i < s->quant_table_count; i++)
908  for (j = 0; j < s->max_slice_count; j++) {
909  FFV1Context *sf = s->slice_context[j];
910  av_assert0(!sf->rc_stat2[i]);
911  sf->rc_stat2[i] = av_mallocz(s->context_count[i] *
912  sizeof(*sf->rc_stat2[i]));
913  if (!sf->rc_stat2[i])
914  return AVERROR(ENOMEM);
915  }
916  }
917 
918  return 0;
919 }
920 
921 static void encode_slice_header(FFV1Context *f, FFV1Context *fs)
922 {
923  RangeCoder *c = &fs->c;
924  uint8_t state[CONTEXT_SIZE];
925  int j;
926  memset(state, 128, sizeof(state));
927 
928  put_symbol(c, state, (fs->slice_x +1)*f->num_h_slices / f->width , 0);
929  put_symbol(c, state, (fs->slice_y +1)*f->num_v_slices / f->height , 0);
930  put_symbol(c, state, (fs->slice_width +1)*f->num_h_slices / f->width -1, 0);
931  put_symbol(c, state, (fs->slice_height+1)*f->num_v_slices / f->height-1, 0);
932  for (j=0; j<f->plane_count; j++) {
933  put_symbol(c, state, f->plane[j].quant_table_index, 0);
934  av_assert0(f->plane[j].quant_table_index == f->context_model);
935  }
936  if (!f->picture.f->interlaced_frame)
937  put_symbol(c, state, 3, 0);
938  else
939  put_symbol(c, state, 1 + !f->picture.f->top_field_first, 0);
940  put_symbol(c, state, f->picture.f->sample_aspect_ratio.num, 0);
941  put_symbol(c, state, f->picture.f->sample_aspect_ratio.den, 0);
942  if (f->version > 3) {
943  put_rac(c, state, fs->slice_coding_mode == 1);
944  if (fs->slice_coding_mode == 1)
945  ff_ffv1_clear_slice_state(f, fs);
946  put_symbol(c, state, fs->slice_coding_mode, 0);
947  if (fs->slice_coding_mode != 1) {
948  put_symbol(c, state, fs->slice_rct_by_coef, 0);
949  put_symbol(c, state, fs->slice_rct_ry_coef, 0);
950  }
951  }
952 }
953 
954 static void choose_rct_params(FFV1Context *fs, const uint8_t *src[3], const int stride[3], int w, int h)
955 {
956 #define NB_Y_COEFF 15
957  static const int rct_y_coeff[15][2] = {
958  {0, 0}, // 4G
959  {1, 1}, // R + 2G + B
960  {2, 2}, // 2R + 2B
961  {0, 2}, // 2G + 2B
962  {2, 0}, // 2R + 2G
963  {4, 0}, // 4R
964  {0, 4}, // 4B
965 
966  {0, 3}, // 1G + 3B
967  {3, 0}, // 3R + 1G
968  {3, 1}, // 3R + B
969  {1, 3}, // R + 3B
970  {1, 2}, // R + G + 2B
971  {2, 1}, // 2R + G + B
972  {0, 1}, // 3G + B
973  {1, 0}, // R + 3G
974  };
975 
976  int stat[NB_Y_COEFF] = {0};
977  int x, y, i, p, best;
978  int16_t *sample[3];
979  int lbd = fs->bits_per_raw_sample <= 8;
980 
981  for (y = 0; y < h; y++) {
982  int lastr=0, lastg=0, lastb=0;
983  for (p = 0; p < 3; p++)
984  sample[p] = fs->sample_buffer + p*w;
985 
986  for (x = 0; x < w; x++) {
987  int b, g, r;
988  int ab, ag, ar;
989  if (lbd) {
990  unsigned v = *((const uint32_t*)(src[0] + x*4 + stride[0]*y));
991  b = v & 0xFF;
992  g = (v >> 8) & 0xFF;
993  r = (v >> 16) & 0xFF;
994  } else {
995  b = *((const uint16_t*)(src[0] + x*2 + stride[0]*y));
996  g = *((const uint16_t*)(src[1] + x*2 + stride[1]*y));
997  r = *((const uint16_t*)(src[2] + x*2 + stride[2]*y));
998  }
999 
1000  ar = r - lastr;
1001  ag = g - lastg;
1002  ab = b - lastb;
1003  if (x && y) {
1004  int bg = ag - sample[0][x];
1005  int bb = ab - sample[1][x];
1006  int br = ar - sample[2][x];
1007 
1008  br -= bg;
1009  bb -= bg;
1010 
1011  for (i = 0; i<NB_Y_COEFF; i++) {
1012  stat[i] += FFABS(bg + ((br*rct_y_coeff[i][0] + bb*rct_y_coeff[i][1])>>2));
1013  }
1014 
1015  }
1016  sample[0][x] = ag;
1017  sample[1][x] = ab;
1018  sample[2][x] = ar;
1019 
1020  lastr = r;
1021  lastg = g;
1022  lastb = b;
1023  }
1024  }
1025 
1026  best = 0;
1027  for (i=1; i<NB_Y_COEFF; i++) {
1028  if (stat[i] < stat[best])
1029  best = i;
1030  }
1031 
1032  fs->slice_rct_by_coef = rct_y_coeff[best][1];
1033  fs->slice_rct_ry_coef = rct_y_coeff[best][0];
1034 }
1035 
1036 static int encode_slice(AVCodecContext *c, void *arg)
1037 {
1038  FFV1Context *fs = *(void **)arg;
1039  FFV1Context *f = fs->avctx->priv_data;
1040  int width = fs->slice_width;
1041  int height = fs->slice_height;
1042  int x = fs->slice_x;
1043  int y = fs->slice_y;
1044  const AVFrame *const p = f->picture.f;
1045  const int ps = av_pix_fmt_desc_get(c->pix_fmt)->comp[0].step;
1046  int ret;
1047  RangeCoder c_bak = fs->c;
1048  const uint8_t *planes[4] = {p->data[0] + ps*x + y*p->linesize[0],
1049  p->data[1] ? p->data[1] + ps*x + y*p->linesize[1] : NULL,
1050  p->data[2] ? p->data[2] + ps*x + y*p->linesize[2] : NULL,
1051  p->data[3] ? p->data[3] + ps*x + y*p->linesize[3] : NULL};
1052 
1053  fs->slice_coding_mode = 0;
1054  if (f->version > 3) {
1055  choose_rct_params(fs, planes, p->linesize, width, height);
1056  } else {
1057  fs->slice_rct_by_coef = 1;
1058  fs->slice_rct_ry_coef = 1;
1059  }
1060 
1061 retry:
1062  if (f->key_frame)
1063  ff_ffv1_clear_slice_state(f, fs);
1064  if (f->version > 2) {
1065  encode_slice_header(f, fs);
1066  }
1067  if (fs->ac == AC_GOLOMB_RICE) {
1068  if (f->version > 2)
1069  put_rac(&fs->c, (uint8_t[]) { 129 }, 0);
1070  fs->ac_byte_count = f->version > 2 || (!x && !y) ? ff_rac_terminate(&fs->c) : 0;
1071  init_put_bits(&fs->pb,
1072  fs->c.bytestream_start + fs->ac_byte_count,
1073  fs->c.bytestream_end - fs->c.bytestream_start - fs->ac_byte_count);
1074  }
1075 
1076  if (f->colorspace == 0 && c->pix_fmt != AV_PIX_FMT_YA8) {
1077  const int chroma_width = AV_CEIL_RSHIFT(width, f->chroma_h_shift);
1078  const int chroma_height = AV_CEIL_RSHIFT(height, f->chroma_v_shift);
1079  const int cx = x >> f->chroma_h_shift;
1080  const int cy = y >> f->chroma_v_shift;
1081 
1082  ret = encode_plane(fs, p->data[0] + ps*x + y*p->linesize[0], width, height, p->linesize[0], 0, 1);
1083 
1084  if (f->chroma_planes) {
1085  ret |= encode_plane(fs, p->data[1] + ps*cx+cy*p->linesize[1], chroma_width, chroma_height, p->linesize[1], 1, 1);
1086  ret |= encode_plane(fs, p->data[2] + ps*cx+cy*p->linesize[2], chroma_width, chroma_height, p->linesize[2], 1, 1);
1087  }
1088  if (fs->transparency)
1089  ret |= encode_plane(fs, p->data[3] + ps*x + y*p->linesize[3], width, height, p->linesize[3], 2, 1);
1090  } else if (c->pix_fmt == AV_PIX_FMT_YA8) {
1091  ret = encode_plane(fs, p->data[0] + ps*x + y*p->linesize[0], width, height, p->linesize[0], 0, 2);
1092  ret |= encode_plane(fs, p->data[0] + 1 + ps*x + y*p->linesize[0], width, height, p->linesize[0], 1, 2);
1093  } else if (f->use32bit) {
1094  ret = encode_rgb_frame32(fs, planes, width, height, p->linesize);
1095  } else {
1096  ret = encode_rgb_frame(fs, planes, width, height, p->linesize);
1097  }
1098  emms_c();
1099 
1100  if (ret < 0) {
1101  av_assert0(fs->slice_coding_mode == 0);
1102  if (fs->version < 4 || !fs->ac) {
1103  av_log(c, AV_LOG_ERROR, "Buffer too small\n");
1104  return ret;
1105  }
1106  av_log(c, AV_LOG_DEBUG, "Coding slice as PCM\n");
1107  fs->slice_coding_mode = 1;
1108  fs->c = c_bak;
1109  goto retry;
1110  }
1111 
1112  return 0;
1113 }
1114 
1115 static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
1116  const AVFrame *pict, int *got_packet)
1117 {
1118  FFV1Context *f = avctx->priv_data;
1119  RangeCoder *const c = &f->slice_context[0]->c;
1120  AVFrame *const p = f->picture.f;
1121  uint8_t keystate = 128;
1122  uint8_t *buf_p;
1123  int i, ret;
1124  int64_t maxsize = AV_INPUT_BUFFER_MIN_SIZE
1125  + avctx->width*avctx->height*37LL*4;
1126 
1127  if(!pict) {
1128  if (avctx->flags & AV_CODEC_FLAG_PASS1) {
1129  int j, k, m;
1130  char *p = avctx->stats_out;
1131  char *end = p + STATS_OUT_SIZE;
1132 
1133  memset(f->rc_stat, 0, sizeof(f->rc_stat));
1134  for (i = 0; i < f->quant_table_count; i++)
1135  memset(f->rc_stat2[i], 0, f->context_count[i] * sizeof(*f->rc_stat2[i]));
1136 
1137  av_assert0(f->slice_count == f->max_slice_count);
1138  for (j = 0; j < f->slice_count; j++) {
1139  FFV1Context *fs = f->slice_context[j];
1140  for (i = 0; i < 256; i++) {
1141  f->rc_stat[i][0] += fs->rc_stat[i][0];
1142  f->rc_stat[i][1] += fs->rc_stat[i][1];
1143  }
1144  for (i = 0; i < f->quant_table_count; i++) {
1145  for (k = 0; k < f->context_count[i]; k++)
1146  for (m = 0; m < 32; m++) {
1147  f->rc_stat2[i][k][m][0] += fs->rc_stat2[i][k][m][0];
1148  f->rc_stat2[i][k][m][1] += fs->rc_stat2[i][k][m][1];
1149  }
1150  }
1151  }
1152 
1153  for (j = 0; j < 256; j++) {
1154  snprintf(p, end - p, "%" PRIu64 " %" PRIu64 " ",
1155  f->rc_stat[j][0], f->rc_stat[j][1]);
1156  p += strlen(p);
1157  }
1158  snprintf(p, end - p, "\n");
1159 
1160  for (i = 0; i < f->quant_table_count; i++) {
1161  for (j = 0; j < f->context_count[i]; j++)
1162  for (m = 0; m < 32; m++) {
1163  snprintf(p, end - p, "%" PRIu64 " %" PRIu64 " ",
1164  f->rc_stat2[i][j][m][0], f->rc_stat2[i][j][m][1]);
1165  p += strlen(p);
1166  }
1167  }
1168  snprintf(p, end - p, "%d\n", f->gob_count);
1169  }
1170  return 0;
1171  }
1172 
1173  if (f->version > 3)
1174  maxsize = AV_INPUT_BUFFER_MIN_SIZE + avctx->width*avctx->height*3LL*4;
1175 
1176  if (maxsize > INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE - 32) {
1177  av_log(avctx, AV_LOG_WARNING, "Cannot allocate worst case packet size, the encoding could fail\n");
1178  maxsize = INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE - 32;
1179  }
1180 
1181  if ((ret = ff_alloc_packet2(avctx, pkt, maxsize, 0)) < 0)
1182  return ret;
1183 
1184  ff_init_range_encoder(c, pkt->data, pkt->size);
1185  ff_build_rac_states(c, 0.05 * (1LL << 32), 256 - 8);
1186 
1187  av_frame_unref(p);
1188  if ((ret = av_frame_ref(p, pict)) < 0)
1189  return ret;
1190 #if FF_API_CODED_FRAME
1191 FF_DISABLE_DEPRECATION_WARNINGS
1192  avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
1193 FF_ENABLE_DEPRECATION_WARNINGS
1194 #endif
1195 
1196  if (avctx->gop_size == 0 || f->picture_number % avctx->gop_size == 0) {
1197  put_rac(c, &keystate, 1);
1198  f->key_frame = 1;
1199  f->gob_count++;
1200  write_header(f);
1201  } else {
1202  put_rac(c, &keystate, 0);
1203  f->key_frame = 0;
1204  }
1205 
1206  if (f->ac == AC_RANGE_CUSTOM_TAB) {
1207  int i;
1208  for (i = 1; i < 256; i++) {
1209  c->one_state[i] = f->state_transition[i];
1210  c->zero_state[256 - i] = 256 - c->one_state[i];
1211  }
1212  }
1213 
1214  for (i = 0; i < f->slice_count; i++) {
1215  FFV1Context *fs = f->slice_context[i];
1216  uint8_t *start = pkt->data + pkt->size * (int64_t)i / f->slice_count;
1217  int len = pkt->size / f->slice_count;
1218  if (i) {
1219  ff_init_range_encoder(&fs->c, start, len);
1220  } else {
1221  av_assert0(fs->c.bytestream_end >= fs->c.bytestream_start + len);
1222  av_assert0(fs->c.bytestream < fs->c.bytestream_start + len);
1223  fs->c.bytestream_end = fs->c.bytestream_start + len;
1224  }
1225  }
1226  avctx->execute(avctx, encode_slice, &f->slice_context[0], NULL,
1227  f->slice_count, sizeof(void *));
1228 
1229  buf_p = pkt->data;
1230  for (i = 0; i < f->slice_count; i++) {
1231  FFV1Context *fs = f->slice_context[i];
1232  int bytes;
1233 
1234  if (fs->ac != AC_GOLOMB_RICE) {
1235  uint8_t state = 129;
1236  put_rac(&fs->c, &state, 0);
1237  bytes = ff_rac_terminate(&fs->c);
1238  } else {
1239  flush_put_bits(&fs->pb); // FIXME: nicer padding
1240  bytes = fs->ac_byte_count + (put_bits_count(&fs->pb) + 7) / 8;
1241  }
1242  if (i > 0 || f->version > 2) {
1243  av_assert0(bytes < pkt->size / f->slice_count);
1244  memmove(buf_p, fs->c.bytestream_start, bytes);
1245  av_assert0(bytes < (1 << 24));
1246  AV_WB24(buf_p + bytes, bytes);
1247  bytes += 3;
1248  }
1249  if (f->ec) {
1250  unsigned v;
1251  buf_p[bytes++] = 0;
1252  v = av_crc(av_crc_get_table(AV_CRC_32_IEEE), 0, buf_p, bytes);
1253  AV_WL32(buf_p + bytes, v);
1254  bytes += 4;
1255  }
1256  buf_p += bytes;
1257  }
1258 
1259  if (avctx->flags & AV_CODEC_FLAG_PASS1)
1260  avctx->stats_out[0] = '\0';
1261 
1262 #if FF_API_CODED_FRAME
1263 FF_DISABLE_DEPRECATION_WARNINGS
1264  avctx->coded_frame->key_frame = f->key_frame;
1265 FF_ENABLE_DEPRECATION_WARNINGS
1266 #endif
1267 
1268  f->picture_number++;
1269  pkt->size = buf_p - pkt->data;
1270  pkt->pts =
1271  pkt->dts = pict->pts;
1272  pkt->flags |= AV_PKT_FLAG_KEY * f->key_frame;
1273  *got_packet = 1;
1274 
1275  return 0;
1276 }
1277 
1278 static av_cold int encode_close(AVCodecContext *avctx)
1279 {
1280  ff_ffv1_close(avctx);
1281  return 0;
1282 }
1283 
1284 #define OFFSET(x) offsetof(FFV1Context, x)
1285 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
1286 static const AVOption options[] = {
1287  { "slicecrc", "Protect slices with CRCs", OFFSET(ec), AV_OPT_TYPE_BOOL, { .i64 = -1 }, -1, 1, VE },
1288  { "coder", "Coder type", OFFSET(ac), AV_OPT_TYPE_INT,
1289  { .i64 = 0 }, -2, 2, VE, "coder" },
1290  { "rice", "Golomb rice", 0, AV_OPT_TYPE_CONST,
1291  { .i64 = AC_GOLOMB_RICE }, INT_MIN, INT_MAX, VE, "coder" },
1292  { "range_def", "Range with default table", 0, AV_OPT_TYPE_CONST,
1293  { .i64 = AC_RANGE_DEFAULT_TAB_FORCE }, INT_MIN, INT_MAX, VE, "coder" },
1294  { "range_tab", "Range with custom table", 0, AV_OPT_TYPE_CONST,
1295  { .i64 = AC_RANGE_CUSTOM_TAB }, INT_MIN, INT_MAX, VE, "coder" },
1296  { "ac", "Range with custom table (the ac option exists for compatibility and is deprecated)", 0, AV_OPT_TYPE_CONST,
1297  { .i64 = 1 }, INT_MIN, INT_MAX, VE, "coder" },
1298  { "context", "Context model", OFFSET(context_model), AV_OPT_TYPE_INT,
1299  { .i64 = 0 }, 0, 1, VE },
1300 
1301  { NULL }
1302 };
1303 
1304 static const AVClass ffv1_class = {
1305  .class_name = "ffv1 encoder",
1306  .item_name = av_default_item_name,
1307  .option = options,
1308  .version = LIBAVUTIL_VERSION_INT,
1309 };
1310 
1311 #if FF_API_CODER_TYPE
1312 static const AVCodecDefault ffv1_defaults[] = {
1313  { "coder", "-1" },
1314  { NULL },
1315 };
1316 #endif
1317 
1318 AVCodec ff_ffv1_encoder = {
1319  .name = "ffv1",
1320  .long_name = NULL_IF_CONFIG_SMALL("FFmpeg video codec #1"),
1321  .type = AVMEDIA_TYPE_VIDEO,
1322  .id = AV_CODEC_ID_FFV1,
1323  .priv_data_size = sizeof(FFV1Context),
1324  .init = encode_init,
1325  .encode2 = encode_frame,
1326  .close = encode_close,
1327  .capabilities = AV_CODEC_CAP_SLICE_THREADS | AV_CODEC_CAP_DELAY,
1328  .pix_fmts = (const enum AVPixelFormat[]) {
1329  AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUV444P,
1330  AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV411P,
1331  AV_PIX_FMT_YUV410P, AV_PIX_FMT_0RGB32, AV_PIX_FMT_RGB32, AV_PIX_FMT_YUV420P16,
1332  AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16, AV_PIX_FMT_YUV444P9, AV_PIX_FMT_YUV422P9,
1333  AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10,
1334  AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12,
1335  AV_PIX_FMT_YUVA444P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA420P16,
1336  AV_PIX_FMT_YUVA444P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA420P10,
1337  AV_PIX_FMT_YUVA444P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA420P9,
1338  AV_PIX_FMT_GRAY16, AV_PIX_FMT_GRAY8, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10,
1339  AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14,
1340  AV_PIX_FMT_GBRAP10, AV_PIX_FMT_GBRAP12,
1341  AV_PIX_FMT_YA8,
1342  AV_PIX_FMT_GRAY10, AV_PIX_FMT_GRAY12,
1343  AV_PIX_FMT_GBRP16, AV_PIX_FMT_RGB48,
1344  AV_PIX_FMT_GBRAP16, AV_PIX_FMT_RGBA64,
1345  AV_PIX_FMT_GRAY9,
1346  AV_PIX_FMT_YUV420P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV444P14,
1347  AV_PIX_FMT_YUV440P10, AV_PIX_FMT_YUV440P12,
1348  AV_PIX_FMT_NONE
1349 
1350  },
1351 #if FF_API_CODER_TYPE
1352  .defaults = ffv1_defaults,
1353 #endif
1354  .priv_class = &ffv1_class,
1355 };
fold
static av_always_inline int fold(int diff, int bits)
Definition: ffv1.h:151
FF_COMPLIANCE_EXPERIMENTAL
#define FF_COMPLIANCE_EXPERIMENTAL
Allow nonstandardized experimental things.
Definition: avcodec.h:2597
NULL
#define NULL
Definition: coverity.c:32
ffv1_defaults
static const AVCodecDefault ffv1_defaults[]
Definition: ffv1enc.c:1312
AV_PIX_FMT_YUVA422P16
#define AV_PIX_FMT_YUVA422P16
Definition: pixfmt.h:420
AVERROR_INVALIDDATA
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
AV_PIX_FMT_YUV440P10
#define AV_PIX_FMT_YUV440P10
Definition: pixfmt.h:381
AV_PIX_FMT_YUVA422P9
#define AV_PIX_FMT_YUVA422P9
Definition: pixfmt.h:414
av_pix_fmt_desc_get
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2446
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:226
h
h
Definition: vp9dsp_template.c:2038
AVOption
AVOption.
Definition: opt.h:246
encode_slice_header
static void encode_slice_header(FFV1Context *f, FFV1Context *fs)
Definition: ffv1enc.c:921
AV_PIX_FMT_YUVA420P10
#define AV_PIX_FMT_YUVA420P10
Definition: pixfmt.h:416
AV_PIX_FMT_YUV444P14
#define AV_PIX_FMT_YUV444P14
Definition: pixfmt.h:389
AV_PIX_FMT_YA8
8 bits gray, 8 bits alpha
Definition: pixfmt.h:143
AV_PIX_FMT_GBRAP10
#define AV_PIX_FMT_GBRAP10
Definition: pixfmt.h:399
AV_PIX_FMT_YUVA422P10
#define AV_PIX_FMT_YUVA422P10
Definition: pixfmt.h:417
AV_PIX_FMT_YUV444P
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:71
imgutils.h
misc image utilities
AV_LOG_WARNING
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
ThreadFrame::f
AVFrame * f
Definition: thread.h:35
PlaneContext::quant_table
int16_t quant_table[MAX_CONTEXT_INPUTS][256]
Definition: ffv1.h:69
LIBAVUTIL_VERSION_INT
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
FFV1Context::quant_table_count
int quant_table_count
Definition: ffv1.h:126
g
const char * g
Definition: vf_curves.c:115
desc
const char * desc
Definition: nvenc.c:65
init
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
AV_OPT_TYPE_INT
Definition: opt.h:223
FFV1Context::slice_height
int slice_height
Definition: ffv1.h:134
AV_PIX_FMT_RGBA64
#define AV_PIX_FMT_RGBA64
Definition: pixfmt.h:369
MAX_CONTEXT_INPUTS
#define MAX_CONTEXT_INPUTS
Definition: ffv1.h:54
FFV1Context::sample_buffer
int16_t * sample_buffer
Definition: ffv1.h:111
FFV1Context::version
int version
Definition: ffv1.h:87
FFV1Context::micro_version
int micro_version
Definition: ffv1.h:88
RangeCoder::zero_state
uint8_t zero_state[256]
Definition: rangecoder.h:40
rangecoder.h
Range coder.
RangeCoder::bytestream_end
uint8_t * bytestream_end
Definition: rangecoder.h:44
AVRational::num
int num
Numerator.
Definition: rational.h:59
AVPacket::size
int size
Definition: avcodec.h:1446
b
const char * b
Definition: vf_curves.c:116
AV_PIX_FMT_GBRP10
#define AV_PIX_FMT_GBRP10
Definition: pixfmt.h:395
av_default_item_name
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:191
av_log2
int av_log2(unsigned v)
Definition: intmath.c:26
AVCodecContext::pix_fmt
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:1743
AV_PIX_FMT_GRAY9
#define AV_PIX_FMT_GRAY9
Definition: pixfmt.h:359
AV_PIX_FMT_YUV420P12
#define AV_PIX_FMT_YUV420P12
Definition: pixfmt.h:383
AVCodecContext::stats_in
char * stats_in
pass2 encoding statistics input buffer Concatenated stuff from stats_out of pass1 should be placed he...
Definition: avcodec.h:2556
put_symbol_inline
static av_always_inline av_flatten void put_symbol_inline(RangeCoder *c, uint8_t *state, int v, int is_signed, uint64_t rc_stat[256][2], uint64_t rc_stat2[32][2])
Definition: ffv1enc.c:185
av_mallocz
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
Definition: mem.c:236
ring_size
static int ring_size(RingBuffer *ring)
Definition: async.c:105
pkt
static AVPacket pkt
Definition: demuxing_decoding.c:54
FFV1Context::rc_stat2
uint64_t(*[MAX_QUANT_TABLES] rc_stat2)[32][2]
Definition: ffv1.h:86
AVCodecContext::bits_per_raw_sample
int bits_per_raw_sample
Bits per sample/pixel of internal libavcodec pixel/sample format.
Definition: avcodec.h:2757
ffv1.h
FF Video Codec 1 (a lossless codec)
src
#define src
Definition: vp8dsp.c:254
sample
#define sample
Definition: flacdsp_template.c:44
FFV1Context::height
int height
Definition: ffv1.h:89
AVCodec
AVCodec.
Definition: avcodec.h:3424
RangeCoder::one_state
uint8_t one_state[256]
Definition: rangecoder.h:41
attributes.h
Macro definitions for various function/variable attributes.
FFV1Context::slice_rct_by_coef
int slice_rct_by_coef
Definition: ffv1.h:139
log2
#define log2(x)
Definition: libm.h:404
AV_PIX_FMT_GRAY10
#define AV_PIX_FMT_GRAY10
Definition: pixfmt.h:360
FFV1Context::plane_count
int plane_count
Definition: ffv1.h:100
ff_rac_terminate
int ff_rac_terminate(RangeCoder *c)
Definition: rangecoder.c:109
write_quant_tables
static void write_quant_tables(RangeCoder *c, int16_t quant_table[MAX_CONTEXT_INPUTS][256])
Definition: ffv1enc.c:329
AV_PIX_FMT_GRAY12
#define AV_PIX_FMT_GRAY12
Definition: pixfmt.h:361
AVClass::class_name
const char * class_name
The name of the class; usually it is the same name as the context structure type to which the AVClass...
Definition: log.h:72
AV_CODEC_CAP_DELAY
#define AV_CODEC_CAP_DELAY
Encoder or decoder requires flushing with NULL input at the end in order to give the complete and cor...
Definition: avcodec.h:993
FFV1Context::picture
ThreadFrame picture
Definition: ffv1.h:96
av_assert0
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
ff_alloc_packet2
int ff_alloc_packet2(AVCodecContext *avctx, AVPacket *avpkt, int64_t size, int64_t min_size)
Check AVPacket size and/or allocate data.
Definition: encode.c:32
AV_OPT_TYPE_CONST
Definition: opt.h:232
FFV1Context::rc_stat
uint64_t rc_stat[256][2]
Definition: ffv1.h:85
FFV1Context::pb
PutBitContext pb
Definition: ffv1.h:84
AV_PIX_FMT_YUVA420P
planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
Definition: pixfmt.h:101
AVPixFmtDescriptor::comp
AVComponentDescriptor comp[4]
Parameters that describe how pixels are packed.
Definition: pixdesc.h:117
uint8_t
uint8_t
Definition: audio_convert.c:194
av_cold
#define av_cold
Definition: attributes.h:82
AV_PIX_FMT_FLAG_ALPHA
#define AV_PIX_FMT_FLAG_ALPHA
The pixel format has an alpha channel.
Definition: pixdesc.h:177
av_malloc
#define av_malloc(s)
Definition: tableprint_vlc.h:31
put_symbol
static av_noinline void put_symbol(RangeCoder *c, uint8_t *state, int v, int is_signed)
Definition: ffv1enc.c:233
av_assert2
#define av_assert2(cond)
assert() equivalent, that does lie in speed critical code.
Definition: avassert.h:64
fs
#define fs(width, name, subs,...)
Definition: cbs_vp9.c:259
opt.h
AVOptions.
VlcState::bias
int8_t bias
Definition: ffv1.h:64
f
#define f(width, name)
Definition: cbs_vp9.c:255
end
static av_cold int end(AVCodecContext *avctx)
Definition: avrndec.c:90
FFV1Context::c
RangeCoder c
Definition: ffv1.h:82
av_frame_ref
int av_frame_ref(AVFrame *dst, const AVFrame *src)
Set up a new reference to the data described by the source frame.
Definition: frame.c:443
AVFrame::pts
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
Definition: frame.h:319
ff_ffv1_common_init
av_cold int ff_ffv1_common_init(AVCodecContext *avctx)
Definition: ffv1.c:42
AVCodecContext::extradata
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
Definition: avcodec.h:1634
encode_init
static av_cold int encode_init(AVCodecContext *avctx)
Definition: ffv1enc.c:508
AV_PIX_FMT_YUVA420P9
#define AV_PIX_FMT_YUVA420P9
Definition: pixfmt.h:413
AV_PIX_FMT_GBRP9
#define AV_PIX_FMT_GBRP9
Definition: pixfmt.h:394
quant11
static const int8_t quant11[256]
Definition: ffv1enc.c:101
FFV1Context::slice_y
int slice_y
Definition: ffv1.h:136
FFV1Context::initial_states
uint8_t(*[MAX_QUANT_TABLES] initial_states)[32]
Definition: ffv1.h:108
crc.h
Public header for CRC hash function implementation.
ff_ffv1_close
av_cold int ff_ffv1_close(AVCodecContext *avctx)
Definition: ffv1.c:210
height
#define height
AVPacket::data
uint8_t * data
Definition: avcodec.h:1445
AVCodecContext::context_model
attribute_deprecated int context_model
Definition: avcodec.h:2452
VlcState::count
uint8_t count
Definition: ffv1.h:65
ff_dlog
#define ff_dlog(a,...)
Definition: tableprint_vlc.h:29
encode_slice
static int encode_slice(AVCodecContext *c, void *arg)
Definition: ffv1enc.c:1036
choose_rct_params
static void choose_rct_params(FFV1Context *fs, const uint8_t *src[3], const int stride[3], int w, int h)
Definition: ffv1enc.c:954
AV_PIX_FMT_YUV444P16
#define AV_PIX_FMT_YUV444P16
Definition: pixfmt.h:392
AVFrame::interlaced_frame
int interlaced_frame
The content of the picture is interlaced.
Definition: frame.h:373
size
ptrdiff_t size
Definition: opengl_enc.c:101
AV_PIX_FMT_YUV422P12
#define AV_PIX_FMT_YUV422P12
Definition: pixfmt.h:384
AVCodecContext::stats_out
char * stats_out
pass1 encoding statistics output buffer
Definition: avcodec.h:2548
NB_Y_COEFF
#define NB_Y_COEFF
AV_PIX_FMT_YUVA420P16
#define AV_PIX_FMT_YUVA420P16
Definition: pixfmt.h:419
timer.h
high precision timer, useful to profile code
AV_INPUT_BUFFER_MIN_SIZE
#define AV_INPUT_BUFFER_MIN_SIZE
minimum encoding buffer size Used to avoid some checks during header writing.
Definition: avcodec.h:789
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:28
write_extradata
static int write_extradata(FFV1Context *f)
Definition: ffv1enc.c:384
FFV1Context::bits_per_raw_sample
int bits_per_raw_sample
Definition: ffv1.h:122
FFV1Context::slice_width
int slice_width
Definition: ffv1.h:133
AV_PKT_FLAG_KEY
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
Definition: avcodec.h:1477
U
#define U(x)
Definition: vp56_arith.h:37
sort_stt
static int sort_stt(FFV1Context *s, uint8_t stt[256])
Definition: ffv1enc.c:460
ver2_state
static const uint8_t ver2_state[256]
Definition: ffv1enc.c:120
AV_PIX_FMT_YUVA422P
planar YUV 4:2:2 24bpp, (1 Cr & Cb sample per 2x1 Y & A samples)
Definition: pixfmt.h:176
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
ff_ffv1_init_slices_state
av_cold int ff_ffv1_init_slices_state(FFV1Context *f)
Definition: ffv1.c:106
FFV1Context::quant_tables
int16_t quant_tables[MAX_QUANT_TABLES][MAX_CONTEXT_INPUTS][256]
Definition: ffv1.h:105
AVERROR
#define AVERROR(e)
Definition: error.h:43
AV_CRC_32_IEEE
Definition: crc.h:53
av_pix_fmt_get_chroma_sub_sample
int av_pix_fmt_get_chroma_sub_sample(enum AVPixelFormat pix_fmt, int *h_shift, int *v_shift)
Utility function to access log2_chroma_w log2_chroma_h from the pixel format AVPixFmtDescriptor.
Definition: pixdesc.c:2474
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:186
r
const char * r
Definition: vf_curves.c:114
AV_LOG_DEBUG
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:197
PlaneContext::context_count
int context_count
Definition: ffv1.h:71
AV_PIX_FMT_YUVA444P16
#define AV_PIX_FMT_YUVA444P16
Definition: pixfmt.h:421
arg
const char * arg
Definition: jacosubdec.c:66
AVCodecContext::flags
int flags
AV_CODEC_FLAG_*.
Definition: avcodec.h:1613
AV_PIX_FMT_GBRAP12
#define AV_PIX_FMT_GBRAP12
Definition: pixfmt.h:400
AV_PIX_FMT_RGB48
#define AV_PIX_FMT_RGB48
Definition: pixfmt.h:365
avassert.h
simple assert() macros that are a bit more flexible than ISO C assert().
AVCodec::name
const char * name
Name of the codec implementation.
Definition: avcodec.h:3431
round
static av_always_inline av_const double round(double x)
Definition: libm.h:444
quant5
static const int8_t quant5[256]
Definition: ffv1enc.c:63
AV_PIX_FMT_YUV444P10
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:382
ff_ffv1_allocate_initial_states
int ff_ffv1_allocate_initial_states(FFV1Context *f)
Definition: ffv1.c:167
MAX_SLICES
#define MAX_SLICES
Definition: dxva2_hevc.c:29
FFMAX
#define FFMAX(a, b)
Definition: common.h:94
AV_PIX_FMT_GBRAP16
#define AV_PIX_FMT_GBRAP16
Definition: pixfmt.h:401
RangeCoder::bytestream
uint8_t * bytestream
Definition: rangecoder.h:43
AVPacket::flags
int flags
A combination of AV_PKT_FLAG values.
Definition: avcodec.h:1451
put_bits_count
static int put_bits_count(PutBitContext *s)
Definition: put_bits.h:85
AV_PIX_FMT_YUV422P
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:70
FFV1Context::ac
int ac
1=range coder <-> 0=golomb rice
Definition: ffv1.h:101
FFV1Context::quant_table
int16_t quant_table[MAX_CONTEXT_INPUTS][256]
Definition: ffv1.h:104
state
static struct @303 state
AC_RANGE_CUSTOM_TAB
#define AC_RANGE_CUSTOM_TAB
Definition: ffv1.h:58
FFV1Context::run_index
int run_index
Definition: ffv1.h:109
VlcState
Definition: ffv1.h:61
AVPixFmtDescriptor::flags
uint64_t flags
Combination of AV_PIX_FMT_FLAG_...
Definition: pixdesc.h:106
AV_PIX_FMT_YUV422P9
#define AV_PIX_FMT_YUV422P9
Definition: pixfmt.h:377
planes
static const struct @304 planes[]
av_flatten
#define av_flatten
Definition: attributes.h:88
encode_frame
static int encode_frame(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *pict, int *got_packet)
Definition: ffv1enc.c:1115
encode_close
static av_cold int encode_close(AVCodecContext *avctx)
Definition: ffv1enc.c:1278
FFV1Context::state_transition
uint8_t state_transition[256]
Definition: ffv1.h:107
AVPixFmtDescriptor::nb_components
uint8_t nb_components
The number of components each pixel has, (1-4)
Definition: pixdesc.h:83
AV_PICTURE_TYPE_I
Intra.
Definition: avutil.h:274
AVFrame::pict_type
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:309
AV_PIX_FMT_GBRP16
#define AV_PIX_FMT_GBRP16
Definition: pixfmt.h:398
AV_PIX_FMT_GRAY16
#define AV_PIX_FMT_GRAY16
Definition: pixfmt.h:363
FFV1Context::key_frame
int key_frame
Definition: ffv1.h:95
FFMIN
#define FFMIN(a, b)
Definition: common.h:96
FFV1Context::num_h_slices
int num_h_slices
Definition: ffv1.h:132
width
#define width
AVCodecContext::width
int width
picture width / height.
Definition: avcodec.h:1706
w
uint8_t w
Definition: llviddspenc.c:38
FFV1Context::colorspace
int colorspace
Definition: ffv1.h:110
quant_table
static float quant_table[96]
Definition: binkaudio.c:43
AV_OPT_TYPE_BOOL
Definition: opt.h:240
AV_CODEC_FLAG_PASS1
#define AV_CODEC_FLAG_PASS1
Use internal 2pass ratecontrol in first pass mode.
Definition: avcodec.h:858
update_vlc_state
static void update_vlc_state(VlcState *const state, const int v)
Definition: ffv1.h:164
av_crc
uint32_t av_crc(const AVCRC *ctx, uint32_t crc, const uint8_t *buffer, size_t length)
Calculate the CRC of a block.
Definition: crc.c:392
FFV1Context::slice_count
int slice_count
Definition: ffv1.h:129
AV_WB24
#define AV_WB24(p, d)
Definition: intreadwrite.h:450
ff_ffv1_encoder
AVCodec ff_ffv1_encoder
Definition: ffv1enc.c:1318
FFV1Context::max_slice_count
int max_slice_count
Definition: ffv1.h:130
ff_build_rac_states
void ff_build_rac_states(RangeCoder *c, int factor, int max_p)
Definition: rangecoder.c:68
FFABS
#define FFABS(a)
Absolute value, Note, INT_MIN / INT64_MIN result in undefined behavior as they are not representable ...
Definition: common.h:72
s
#define s(width, name)
Definition: cbs_vp9.c:257
AVCodecContext::level
int level
level
Definition: avcodec.h:2969
ff_ffv1_init_slice_contexts
av_cold int ff_ffv1_init_slice_contexts(FFV1Context *f)
Definition: ffv1.c:117
AV_PIX_FMT_YUVA444P10
#define AV_PIX_FMT_YUVA444P10
Definition: pixfmt.h:418
FFV1Context::ac_byte_count
int ac_byte_count
number of bytes used for AC coding
Definition: ffv1.h:102
VlcState::drift
int16_t drift
Definition: ffv1.h:62
FFV1Context::packed_at_lsb
int packed_at_lsb
Definition: ffv1.h:123
AV_PIX_FMT_YUV444P9
#define AV_PIX_FMT_YUV444P9
Definition: pixfmt.h:378
AV_PIX_FMT_GBRP14
#define AV_PIX_FMT_GBRP14
Definition: pixfmt.h:397
AVCodecContext::coder_type
attribute_deprecated int coder_type
Definition: avcodec.h:2446
VE
#define VE
Definition: ffv1enc.c:1285
options
static const AVOption options[]
Definition: ffv1enc.c:1286
pred
static const float pred[4]
Definition: siprdata.h:259
AV_PIX_FMT_YUV420P16
#define AV_PIX_FMT_YUV420P16
Definition: pixfmt.h:390
AV_CODEC_CAP_SLICE_THREADS
#define AV_CODEC_CAP_SLICE_THREADS
Codec supports slice-based (or partition-based) multithreading.
Definition: avcodec.h:1028
AV_LOG_INFO
#define AV_LOG_INFO
Standard information.
Definition: log.h:187
AV_PIX_FMT_YUV420P14
#define AV_PIX_FMT_YUV420P14
Definition: pixfmt.h:387
FFV1Context::context_count
int context_count[MAX_QUANT_TABLES]
Definition: ffv1.h:106
quant9_10bit
static const int8_t quant9_10bit[256]
Definition: ffv1enc.c:82
avcodec.h
Libavcodec external API header.
AC_RANGE_DEFAULT_TAB_FORCE
#define AC_RANGE_DEFAULT_TAB_FORCE
Definition: ffv1.h:59
AVFrame::linesize
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:257
STATS_OUT_SIZE
#define STATS_OUT_SIZE
AV_PIX_FMT_YUVA444P
planar YUV 4:4:4 32bpp, (1 Cr & Cb sample per 1x1 Y & A samples)
Definition: pixfmt.h:177
AVPixFmtDescriptor
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:81
AVCodecContext
main external API structure.
Definition: avcodec.h:1533
AV_PIX_FMT_RGB32
#define AV_PIX_FMT_RGB32
Definition: pixfmt.h:352
FFV1Context::intra
int intra
Definition: ffv1.h:117
AVFrame::sample_aspect_ratio
AVRational sample_aspect_ratio
Sample aspect ratio for the video frame, 0/1 if unknown/unspecified.
Definition: frame.h:314
find_best_state
static void find_best_state(uint8_t best_state[256][256], const uint8_t one_state[256])
Definition: ffv1enc.c:139
AVCodecContext::extradata_size
int extradata_size
Definition: avcodec.h:1635
AV_PIX_FMT_YUV420P10
#define AV_PIX_FMT_YUV420P10
Definition: pixfmt.h:379
AV_PIX_FMT_YUV410P
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: pixfmt.h:72
write_quant_table
static void write_quant_table(RangeCoder *c, int16_t *quant_table)
Definition: ffv1enc.c:314
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:67
ff_init_range_encoder
av_cold void ff_init_range_encoder(RangeCoder *c, uint8_t *buf, int buf_size)
Definition: rangecoder.c:42
FFV1Context::use32bit
int use32bit
Definition: ffv1.h:114
AC_GOLOMB_RICE
#define AC_GOLOMB_RICE
Definition: ffv1.h:56
put_vlc_symbol
static void put_vlc_symbol(PutBitContext *pb, VlcState *const state, int v, int bits)
Definition: ffv1enc.c:240
encode_plane
static int encode_plane(FFV1Context *s, uint8_t *src, int w, int h, int stride, int plane_index, int pixel_stride)
Definition: ffv1enc.c:274
set_sr_golomb
static void set_sr_golomb(PutBitContext *pb, int i, int k, int limit, int esc_len)
write signed golomb rice code (ffv1).
Definition: golomb.h:716
AV_PIX_FMT_YUV440P12
#define AV_PIX_FMT_YUV440P12
Definition: pixfmt.h:385
FFV1Context::picture_number
int picture_number
Definition: ffv1.h:94
VlcState::error_sum
uint16_t error_sum
Definition: ffv1.h:63
AC_RANGE_DEFAULT_TAB
#define AC_RANGE_DEFAULT_TAB
Definition: ffv1.h:57
ffv1_class
static const AVClass ffv1_class
Definition: ffv1enc.c:1304
AV_PIX_FMT_YUV420P9
#define AV_PIX_FMT_YUV420P9
Definition: pixfmt.h:376
snprintf
#define snprintf
Definition: snprintf.h:34
pix_fmts
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:266
AV_PIX_FMT_YUV422P14
#define AV_PIX_FMT_YUV422P14
Definition: pixfmt.h:388
AV_PIX_FMT_GBRP12
#define AV_PIX_FMT_GBRP12
Definition: pixfmt.h:396
av_frame_unref
void av_frame_unref(AVFrame *frame)
Unreference all the buffers referenced by frame and reset the frame fields.
Definition: frame.c:553
CONTEXT_SIZE
#define CONTEXT_SIZE
Definition: ffv1.h:51
AV_PIX_FMT_YUV422P10
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:380
FFV1Context::gob_count
int gob_count
Definition: ffv1.h:125
PlaneContext::quant_table_index
int quant_table_index
Definition: ffv1.h:70
AV_PIX_FMT_YUV444P12
#define AV_PIX_FMT_YUV444P12
Definition: pixfmt.h:386
AVFrame::data
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:240
OFFSET
#define OFFSET(x)
Definition: ffv1enc.c:1284
AVCodecContext::gop_size
int gop_size
the number of pictures in a group of pictures, or 0 for intra_only
Definition: avcodec.h:1728
av_crc_get_table
const AVCRC * av_crc_get_table(AVCRCId crc_id)
Get an initialized standard CRC table.
Definition: crc.c:374
COST2
#define COST2(old, new)
AV_CODEC_ID_FFV1
Definition: avcodec.h:251
stride
GLint GLenum GLboolean GLsizei stride
Definition: opengl_enc.c:105
FFV1Context::context_model
int context_model
Definition: ffv1.h:120
AV_PIX_FMT_YUV420P
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:66
AV_PIX_FMT_GRAY8
Y , 8bpp.
Definition: pixfmt.h:74
FF_DISABLE_DEPRECATION_WARNINGS
#define FF_DISABLE_DEPRECATION_WARNINGS
Definition: internal.h:84
internal.h
common internal api header.
flush_put_bits
static void flush_put_bits(PutBitContext *s)
Pad the end of the output stream with zeros.
Definition: put_bits.h:101
if
if(ret< 0)
Definition: vf_mcdeint.c:279
quant5_10bit
static const int8_t quant5_10bit[256]
Definition: ffv1enc.c:44
c
static double c[64]
Definition: vsrc_mptestsrc.c:87
ff_ffv1_clear_slice_state
void ff_ffv1_clear_slice_state(FFV1Context *f, FFV1Context *fs)
Definition: ffv1.c:182
put_rac
#define put_rac(C, S, B)
AV_PIX_FMT_YUVA444P9
#define AV_PIX_FMT_YUVA444P9
Definition: pixfmt.h:415
AVCodecContext::coded_frame
attribute_deprecated AVFrame * coded_frame
the picture in the bitstream
Definition: avcodec.h:2776
AV_PIX_FMT_YUV411P
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
Definition: pixfmt.h:73
init_put_bits
static void init_put_bits(PutBitContext *s, uint8_t *buffer, int buffer_size)
Initialize the PutBitContext s.
Definition: put_bits.h:48
AVRational::den
int den
Denominator.
Definition: rational.h:60
FFV1Context::slice_coding_mode
int slice_coding_mode
Definition: ffv1.h:138
RangeCoder::bytestream_start
uint8_t * bytestream_start
Definition: rangecoder.h:42
AV_INPUT_BUFFER_PADDING_SIZE
#define AV_INPUT_BUFFER_PADDING_SIZE
Required number of additionally allocated bytes at the end of the input bitstream for decoding...
Definition: avcodec.h:782
AV_CODEC_FLAG_PASS2
#define AV_CODEC_FLAG_PASS2
Use internal 2pass ratecontrol in second pass mode.
Definition: avcodec.h:862
AVCodecContext::slices
int slices
Number of slices.
Definition: avcodec.h:2180
AVCodecContext::priv_data
void * priv_data
Definition: avcodec.h:1560
FFV1Context::chroma_h_shift
int chroma_h_shift
Definition: ffv1.h:91
FFV1Context::plane
PlaneContext plane[MAX_PLANES]
Definition: ffv1.h:103
FFV1Context::transparency
int transparency
Definition: ffv1.h:92
AVCodecContext::execute
int(* execute)(struct AVCodecContext *c, int(*func)(struct AVCodecContext *c2, void *arg), void *arg2, int *ret, int count, int size)
The codec may call this to execute several independent things.
Definition: avcodec.h:2825
FF_ENABLE_DEPRECATION_WARNINGS
#define FF_ENABLE_DEPRECATION_WARNINGS
Definition: internal.h:85
FFV1Context::chroma_v_shift
int chroma_v_shift
Definition: ffv1.h:91
AVFrame::top_field_first
int top_field_first
If the content is interlaced, is top field displayed first.
Definition: frame.h:378
len
int len
Definition: vorbis_enc_data.h:452
FFV1Context::chroma_planes
int chroma_planes
Definition: ffv1.h:90
AVFrame::key_frame
int key_frame
1 -> keyframe, 0-> not
Definition: frame.h:304
write_header
static void write_header(FFV1Context *f)
Definition: ffv1enc.c:337
FFV1Context::slice_context
struct FFV1Context * slice_context[MAX_SLICES]
Definition: ffv1.h:128
ffv1enc_template.c
AVPacket::dts
int64_t dts
Decompression timestamp in AVStream->time_base units; the time at which the packet is decompressed...
Definition: avcodec.h:1444
av_noinline
#define av_noinline
Definition: attributes.h:62
av_freep
#define av_freep(p)
Definition: tableprint_vlc.h:35
AV_PIX_FMT_YUV440P
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
Definition: pixfmt.h:99
start
void INT64 start
Definition: avisynth_c.h:690
AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
av_always_inline
#define av_always_inline
Definition: attributes.h:39
av_malloc_array
#define av_malloc_array(a, b)
Definition: tableprint_vlc.h:32
FFSWAP
#define FFSWAP(type, a, b)
Definition: common.h:99
FFV1Context::ec
int ec
Definition: ffv1.h:116
FFV1Context::num_v_slices
int num_v_slices
Definition: ffv1.h:131
golomb.h
exp golomb vlc stuff
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
AVPacket
This structure stores compressed data.
Definition: avcodec.h:1422
FFV1Context::avctx
AVCodecContext * avctx
Definition: ffv1.h:81
AVCodecContext::strict_std_compliance
int strict_std_compliance
strictly follow the standard (MPEG-4, ...).
Definition: avcodec.h:2592
print
static void print(AVTreeNode *t, int depth)
Definition: tree.c:44
FFV1Context::slice_x
int slice_x
Definition: ffv1.h:135
AV_PIX_FMT_YUV422P16
#define AV_PIX_FMT_YUV422P16
Definition: pixfmt.h:391
AVPacket::pts
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
Definition: avcodec.h:1438
for
for(j=16;j >0;--j)
Definition: h264pred_template.c:469
AVComponentDescriptor::step
int step
Number of elements between 2 horizontally consecutive pixels.
Definition: pixdesc.h:41
FFV1Context::width
int width
Definition: ffv1.h:89
AV_WL32
#define AV_WL32(p, v)
Definition: intreadwrite.h:426
AV_PIX_FMT_0RGB32
#define AV_PIX_FMT_0RGB32
Definition: pixfmt.h:356
a
a
Definition: h264pred_template.c:468
AV_CEIL_RSHIFT
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:58
FFV1Context::slice_rct_ry_coef
int slice_rct_ry_coef
Definition: ffv1.h:140
put_bits.h
bitstream writer API
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