4 * Copyright (c) 2003-2013 Michael Niedermayer <michaelni@gmx.at>
6 * This file is part of FFmpeg.
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.
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.
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
25 * FF Video Codec 1 (a lossless codec) encoder
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"
38 #include "rangecoder.h"
43 static const int8_t quant5_10bit[256] = {
44 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1,
45 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
48 2, 2, 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, -1,
57 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -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, -0, -0, -0, -0, -0, -0, -0, -0, -0, -0,
62 static const int8_t quant5[256] = {
63 0, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
64 2, 2, 2, 2, 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, -1, -1, -1,
81 static const int8_t quant9_10bit[256] = {
82 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2,
83 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3,
84 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
85 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4,
86 4, 4, 4, 4, 4, 4, 4, 4, 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, -3, -3, -3, -3, -3, -3, -3,
95 -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3,
96 -3, -3, -3, -3, -3, -3, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2,
97 -2, -2, -2, -2, -1, -1, -1, -1, -1, -1, -1, -1, -0, -0, -0, -0,
100 static const int8_t quant11[256] = {
101 0, 1, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4,
102 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
103 4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
104 5, 5, 5, 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, -4, -4,
115 -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4,
116 -4, -4, -4, -4, -4, -3, -3, -3, -3, -3, -3, -3, -2, -2, -2, -1,
119 static const uint8_t ver2_state[256] = {
120 0, 10, 10, 10, 10, 16, 16, 16, 28, 16, 16, 29, 42, 49, 20, 49,
121 59, 25, 26, 26, 27, 31, 33, 33, 33, 34, 34, 37, 67, 38, 39, 39,
122 40, 40, 41, 79, 43, 44, 45, 45, 48, 48, 64, 50, 51, 52, 88, 52,
123 53, 74, 55, 57, 58, 58, 74, 60, 101, 61, 62, 84, 66, 66, 68, 69,
124 87, 82, 71, 97, 73, 73, 82, 75, 111, 77, 94, 78, 87, 81, 83, 97,
125 85, 83, 94, 86, 99, 89, 90, 99, 111, 92, 93, 134, 95, 98, 105, 98,
126 105, 110, 102, 108, 102, 118, 103, 106, 106, 113, 109, 112, 114, 112, 116, 125,
127 115, 116, 117, 117, 126, 119, 125, 121, 121, 123, 145, 124, 126, 131, 127, 129,
128 165, 130, 132, 138, 133, 135, 145, 136, 137, 139, 146, 141, 143, 142, 144, 148,
129 147, 155, 151, 149, 151, 150, 152, 157, 153, 154, 156, 168, 158, 162, 161, 160,
130 172, 163, 169, 164, 166, 184, 167, 170, 177, 174, 171, 173, 182, 176, 180, 178,
131 175, 189, 179, 181, 186, 183, 192, 185, 200, 187, 191, 188, 190, 197, 193, 196,
132 197, 194, 195, 196, 198, 202, 199, 201, 210, 203, 207, 204, 205, 206, 208, 214,
133 209, 211, 221, 212, 213, 215, 224, 216, 217, 218, 219, 220, 222, 228, 223, 225,
134 226, 224, 227, 229, 240, 230, 231, 232, 233, 234, 235, 236, 238, 239, 237, 242,
135 241, 243, 242, 244, 245, 246, 247, 248, 249, 250, 251, 252, 252, 253, 254, 255,
138 static void find_best_state(uint8_t best_state[256][256],
139 const uint8_t one_state[256])
144 for (i = 1; i < 256; i++)
145 l2tab[i] = log2(i / 256.0);
147 for (i = 0; i < 256; i++) {
148 double best_len[256];
149 double p = i / 256.0;
151 for (j = 0; j < 256; j++)
152 best_len[j] = 1 << 30;
154 for (j = FFMAX(i - 10, 1); j < FFMIN(i + 11, 256); j++) {
155 double occ[256] = { 0 };
158 for (k = 0; k < 256; k++) {
159 double newocc[256] = { 0 };
160 for (m = 1; m < 256; m++)
162 len -=occ[m]*( p *l2tab[ m]
163 + (1-p)*l2tab[256-m]);
165 if (len < best_len[k]) {
167 best_state[i][k] = j;
169 for (m = 0; m < 256; m++)
171 newocc[ one_state[ m]] += occ[m] * p;
172 newocc[256 - one_state[256 - m]] += occ[m] * (1 - p);
174 memcpy(occ, newocc, sizeof(occ));
180 static av_always_inline av_flatten void put_symbol_inline(RangeCoder *c,
181 uint8_t *state, int v,
183 uint64_t rc_stat[256][2],
184 uint64_t rc_stat2[32][2])
188 #define put_rac(C, S, B) \
191 rc_stat[*(S)][B]++; \
192 rc_stat2[(S) - state][B]++; \
198 const int a = FFABS(v);
199 const int e = av_log2(a);
200 put_rac(c, state + 0, 0);
202 for (i = 0; i < e; i++)
203 put_rac(c, state + 1 + i, 1); // 1..10
204 put_rac(c, state + 1 + i, 0);
206 for (i = e - 1; i >= 0; i--)
207 put_rac(c, state + 22 + i, (a >> i) & 1); // 22..31
210 put_rac(c, state + 11 + e, v < 0); // 11..21
212 for (i = 0; i < e; i++)
213 put_rac(c, state + 1 + FFMIN(i, 9), 1); // 1..10
214 put_rac(c, state + 1 + 9, 0);
216 for (i = e - 1; i >= 0; i--)
217 put_rac(c, state + 22 + FFMIN(i, 9), (a >> i) & 1); // 22..31
220 put_rac(c, state + 11 + 10, v < 0); // 11..21
223 put_rac(c, state + 0, 1);
228 static av_noinline void put_symbol(RangeCoder *c, uint8_t *state,
229 int v, int is_signed)
231 put_symbol_inline(c, state, v, is_signed, NULL, NULL);
235 static inline void put_vlc_symbol(PutBitContext *pb, VlcState *const state,
239 v = fold(v - state->bias, bits);
243 while (i < state->error_sum) { // FIXME: optimize
251 if (k == 0 && 2 * state->drift <= -state->count)
256 code = v ^ ((2 * state->drift + state->count) >> 31);
259 av_dlog(NULL, "v:%d/%d bias:%d error:%d drift:%d count:%d k:%d\n", v, code,
260 state->bias, state->error_sum, state->drift, state->count, k);
261 set_sr_golomb(pb, code, k, 12, bits);
263 update_vlc_state(state, v);
266 static av_always_inline int encode_line(FFV1Context *s, int w,
268 int plane_index, int bits)
270 PlaneContext *const p = &s->plane[plane_index];
271 RangeCoder *const c = &s->c;
273 int run_index = s->run_index;
278 if (c->bytestream_end - c->bytestream < w * 35) {
279 av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
280 return AVERROR_INVALIDDATA;
283 if (s->pb.buf_end - s->pb.buf - (put_bits_count(&s->pb) >> 3) < w * 4) {
284 av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
285 return AVERROR_INVALIDDATA;
289 if (s->slice_coding_mode == 1) {
290 for (x = 0; x < w; x++) {
292 int v = sample[0][x];
293 for (i = bits-1; i>=0; i--) {
295 put_rac(c, &state, (v>>i) & 1);
301 for (x = 0; x < w; x++) {
304 context = get_context(p, sample[0] + x, sample[1] + x, sample[2] + x);
305 diff = sample[0][x] - predict(sample[0] + x, sample[1] + x);
312 diff = fold(diff, bits);
315 if (s->flags & CODEC_FLAG_PASS1) {
316 put_symbol_inline(c, p->state[context], diff, 1, s->rc_stat,
317 s->rc_stat2[p->quant_table_index][context]);
319 put_symbol_inline(c, p->state[context], diff, 1, NULL, NULL);
327 while (run_count >= 1 << ff_log2_run[run_index]) {
328 run_count -= 1 << ff_log2_run[run_index];
330 put_bits(&s->pb, 1, 1);
333 put_bits(&s->pb, 1 + ff_log2_run[run_index], run_count);
345 av_dlog(s->avctx, "count:%d index:%d, mode:%d, x:%d pos:%d\n",
346 run_count, run_index, run_mode, x,
347 (int)put_bits_count(&s->pb));
350 put_vlc_symbol(&s->pb, &p->vlc_state[context], diff, bits);
354 while (run_count >= 1 << ff_log2_run[run_index]) {
355 run_count -= 1 << ff_log2_run[run_index];
357 put_bits(&s->pb, 1, 1);
361 put_bits(&s->pb, 1, 1);
363 s->run_index = run_index;
368 static int encode_plane(FFV1Context *s, uint8_t *src, int w, int h,
369 int stride, int plane_index)
372 const int ring_size = s->avctx->context_model ? 3 : 2;
376 memset(s->sample_buffer, 0, ring_size * (w + 6) * sizeof(*s->sample_buffer));
378 for (y = 0; y < h; y++) {
379 for (i = 0; i < ring_size; i++)
380 sample[i] = s->sample_buffer + (w + 6) * ((h + i - y) % ring_size) + 3;
382 sample[0][-1]= sample[1][0 ];
383 sample[1][ w]= sample[1][w-1];
385 if (s->bits_per_raw_sample <= 8) {
386 for (x = 0; x < w; x++)
387 sample[0][x] = src[x + stride * y];
388 if((ret = encode_line(s, w, sample, plane_index, 8)) < 0)
391 if (s->packed_at_lsb) {
392 for (x = 0; x < w; x++) {
393 sample[0][x] = ((uint16_t*)(src + stride*y))[x];
396 for (x = 0; x < w; x++) {
397 sample[0][x] = ((uint16_t*)(src + stride*y))[x] >> (16 - s->bits_per_raw_sample);
400 if((ret = encode_line(s, w, sample, plane_index, s->bits_per_raw_sample)) < 0)
403 // STOP_TIMER("encode line") }
408 static int encode_rgb_frame(FFV1Context *s, uint8_t *src[3], int w, int h, const int stride[3])
411 const int ring_size = s->avctx->context_model ? 3 : 2;
412 int16_t *sample[4][3];
413 int lbd = s->bits_per_raw_sample <= 8;
414 int bits = s->bits_per_raw_sample > 0 ? s->bits_per_raw_sample : 8;
415 int offset = 1 << bits;
419 memset(s->sample_buffer, 0, ring_size * MAX_PLANES *
420 (w + 6) * sizeof(*s->sample_buffer));
422 for (y = 0; y < h; y++) {
423 for (i = 0; i < ring_size; i++)
424 for (p = 0; p < MAX_PLANES; p++)
425 sample[p][i]= s->sample_buffer + p*ring_size*(w+6) + ((h+i-y)%ring_size)*(w+6) + 3;
427 for (x = 0; x < w; x++) {
428 int b, g, r, av_uninit(a);
430 unsigned v = *((uint32_t*)(src[0] + x*4 + stride[0]*y));
433 r = (v >> 16) & 0xFF;
436 b = *((uint16_t*)(src[0] + x*2 + stride[0]*y));
437 g = *((uint16_t*)(src[1] + x*2 + stride[1]*y));
438 r = *((uint16_t*)(src[2] + x*2 + stride[2]*y));
441 if (s->slice_coding_mode != 1) {
444 g += (b * s->slice_rct_by_coef + r * s->slice_rct_ry_coef) >> 2;
454 for (p = 0; p < 3 + s->transparency; p++) {
456 sample[p][0][-1] = sample[p][1][0 ];
457 sample[p][1][ w] = sample[p][1][w-1];
458 if (lbd && s->slice_coding_mode == 0)
459 ret = encode_line(s, w, sample[p], (p + 1) / 2, 9);
461 ret = encode_line(s, w, sample[p], (p + 1) / 2, bits + (s->slice_coding_mode != 1));
469 static void write_quant_table(RangeCoder *c, int16_t *quant_table)
473 uint8_t state[CONTEXT_SIZE];
474 memset(state, 128, sizeof(state));
476 for (i = 1; i < 128; i++)
477 if (quant_table[i] != quant_table[i - 1]) {
478 put_symbol(c, state, i - last - 1, 0);
481 put_symbol(c, state, i - last - 1, 0);
484 static void write_quant_tables(RangeCoder *c,
485 int16_t quant_table[MAX_CONTEXT_INPUTS][256])
488 for (i = 0; i < 5; i++)
489 write_quant_table(c, quant_table[i]);
492 static void write_header(FFV1Context *f)
494 uint8_t state[CONTEXT_SIZE];
496 RangeCoder *const c = &f->slice_context[0]->c;
498 memset(state, 128, sizeof(state));
500 if (f->version < 2) {
501 put_symbol(c, state, f->version, 0);
502 put_symbol(c, state, f->ac, 0);
504 for (i = 1; i < 256; i++)
506 f->state_transition[i] - c->one_state[i], 1);
508 put_symbol(c, state, f->colorspace, 0); //YUV cs type
510 put_symbol(c, state, f->bits_per_raw_sample, 0);
511 put_rac(c, state, f->chroma_planes);
512 put_symbol(c, state, f->chroma_h_shift, 0);
513 put_symbol(c, state, f->chroma_v_shift, 0);
514 put_rac(c, state, f->transparency);
516 write_quant_tables(c, f->quant_table);
517 } else if (f->version < 3) {
518 put_symbol(c, state, f->slice_count, 0);
519 for (i = 0; i < f->slice_count; i++) {
520 FFV1Context *fs = f->slice_context[i];
522 (fs->slice_x + 1) * f->num_h_slices / f->width, 0);
524 (fs->slice_y + 1) * f->num_v_slices / f->height, 0);
526 (fs->slice_width + 1) * f->num_h_slices / f->width - 1,
529 (fs->slice_height + 1) * f->num_v_slices / f->height - 1,
531 for (j = 0; j < f->plane_count; j++) {
532 put_symbol(c, state, f->plane[j].quant_table_index, 0);
533 av_assert0(f->plane[j].quant_table_index == f->avctx->context_model);
539 static int write_extradata(FFV1Context *f)
541 RangeCoder *const c = &f->c;
542 uint8_t state[CONTEXT_SIZE];
544 uint8_t state2[32][CONTEXT_SIZE];
547 memset(state2, 128, sizeof(state2));
548 memset(state, 128, sizeof(state));
550 f->avctx->extradata_size = 10000 + 4 +
551 (11 * 11 * 5 * 5 * 5 + 11 * 11 * 11) * 32;
552 f->avctx->extradata = av_malloc(f->avctx->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
553 if (!f->avctx->extradata)
554 return AVERROR(ENOMEM);
555 ff_init_range_encoder(c, f->avctx->extradata, f->avctx->extradata_size);
556 ff_build_rac_states(c, 0.05 * (1LL << 32), 256 - 8);
558 put_symbol(c, state, f->version, 0);
559 if (f->version > 2) {
560 if (f->version == 3) {
561 f->micro_version = 4;
562 } else if (f->version == 4)
563 f->micro_version = 2;
564 put_symbol(c, state, f->micro_version, 0);
567 put_symbol(c, state, f->ac, 0);
569 for (i = 1; i < 256; i++)
570 put_symbol(c, state, f->state_transition[i] - c->one_state[i], 1);
572 put_symbol(c, state, f->colorspace, 0); // YUV cs type
573 put_symbol(c, state, f->bits_per_raw_sample, 0);
574 put_rac(c, state, f->chroma_planes);
575 put_symbol(c, state, f->chroma_h_shift, 0);
576 put_symbol(c, state, f->chroma_v_shift, 0);
577 put_rac(c, state, f->transparency);
578 put_symbol(c, state, f->num_h_slices - 1, 0);
579 put_symbol(c, state, f->num_v_slices - 1, 0);
581 put_symbol(c, state, f->quant_table_count, 0);
582 for (i = 0; i < f->quant_table_count; i++)
583 write_quant_tables(c, f->quant_tables[i]);
585 for (i = 0; i < f->quant_table_count; i++) {
586 for (j = 0; j < f->context_count[i] * CONTEXT_SIZE; j++)
587 if (f->initial_states[i] && f->initial_states[i][0][j] != 128)
589 if (j < f->context_count[i] * CONTEXT_SIZE) {
590 put_rac(c, state, 1);
591 for (j = 0; j < f->context_count[i]; j++)
592 for (k = 0; k < CONTEXT_SIZE; k++) {
593 int pred = j ? f->initial_states[i][j - 1][k] : 128;
594 put_symbol(c, state2[k],
595 (int8_t)(f->initial_states[i][j][k] - pred), 1);
598 put_rac(c, state, 0);
602 if (f->version > 2) {
603 put_symbol(c, state, f->ec, 0);
604 put_symbol(c, state, f->intra = (f->avctx->gop_size < 2), 0);
607 f->avctx->extradata_size = ff_rac_terminate(c);
608 v = av_crc(av_crc_get_table(AV_CRC_32_IEEE), 0, f->avctx->extradata, f->avctx->extradata_size);
609 AV_WL32(f->avctx->extradata + f->avctx->extradata_size, v);
610 f->avctx->extradata_size += 4;
615 static int sort_stt(FFV1Context *s, uint8_t stt[256])
617 int i, i2, changed, print = 0;
621 for (i = 12; i < 244; i++) {
622 for (i2 = i + 1; i2 < 245 && i2 < i + 4; i2++) {
624 #define COST(old, new) \
625 s->rc_stat[old][0] * -log2((256 - (new)) / 256.0) + \
626 s->rc_stat[old][1] * -log2((new) / 256.0)
628 #define COST2(old, new) \
629 COST(old, new) + COST(256 - (old), 256 - (new))
631 double size0 = COST2(i, i) + COST2(i2, i2);
632 double sizeX = COST2(i, i2) + COST2(i2, i);
633 if (size0 - sizeX > size0*(1e-14) && i != 128 && i2 != 128) {
635 FFSWAP(int, stt[i], stt[i2]);
636 FFSWAP(int, s->rc_stat[i][0], s->rc_stat[i2][0]);
637 FFSWAP(int, s->rc_stat[i][1], s->rc_stat[i2][1]);
639 FFSWAP(int, stt[256 - i], stt[256 - i2]);
640 FFSWAP(int, s->rc_stat[256 - i][0], s->rc_stat[256 - i2][0]);
641 FFSWAP(int, s->rc_stat[256 - i][1], s->rc_stat[256 - i2][1]);
643 for (j = 1; j < 256; j++) {
646 else if (stt[j] == i2)
649 if (stt[256 - j] == 256 - i)
650 stt[256 - j] = 256 - i2;
651 else if (stt[256 - j] == 256 - i2)
652 stt[256 - j] = 256 - i;
663 static av_cold int encode_init(AVCodecContext *avctx)
665 FFV1Context *s = avctx->priv_data;
666 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt);
669 if ((ret = ffv1_common_init(avctx)) < 0)
674 if ((avctx->flags & (CODEC_FLAG_PASS1|CODEC_FLAG_PASS2)) || avctx->slices>1)
675 s->version = FFMAX(s->version, 2);
677 // Unspecified level & slices, we choose version 1.2+ to ensure multithreaded decodability
678 if (avctx->slices == 0 && avctx->level < 0 && avctx->width * avctx->height > 720*576)
679 s->version = FFMAX(s->version, 2);
681 if (avctx->level <= 0 && s->version == 2) {
684 if (avctx->level >= 0 && avctx->level <= 4)
685 s->version = FFMAX(s->version, avctx->level);
688 s->ec = (s->version >= 3);
691 if ((s->version == 2 || s->version>3) && avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
692 av_log(avctx, AV_LOG_ERROR, "Version 2 needed for requested features but version 2 is experimental and not enabled\n");
693 return AVERROR_INVALIDDATA;
696 s->ac = avctx->coder_type > 0 ? 2 : 0;
699 switch(avctx->pix_fmt) {
700 case AV_PIX_FMT_YUV444P9:
701 case AV_PIX_FMT_YUV422P9:
702 case AV_PIX_FMT_YUV420P9:
703 case AV_PIX_FMT_YUVA444P9:
704 case AV_PIX_FMT_YUVA422P9:
705 case AV_PIX_FMT_YUVA420P9:
706 if (!avctx->bits_per_raw_sample)
707 s->bits_per_raw_sample = 9;
708 case AV_PIX_FMT_YUV444P10:
709 case AV_PIX_FMT_YUV420P10:
710 case AV_PIX_FMT_YUV422P10:
711 case AV_PIX_FMT_YUVA444P10:
712 case AV_PIX_FMT_YUVA422P10:
713 case AV_PIX_FMT_YUVA420P10:
714 s->packed_at_lsb = 1;
715 if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample)
716 s->bits_per_raw_sample = 10;
717 case AV_PIX_FMT_GRAY16:
718 case AV_PIX_FMT_YUV444P16:
719 case AV_PIX_FMT_YUV422P16:
720 case AV_PIX_FMT_YUV420P16:
721 case AV_PIX_FMT_YUVA444P16:
722 case AV_PIX_FMT_YUVA422P16:
723 case AV_PIX_FMT_YUVA420P16:
724 if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample) {
725 s->bits_per_raw_sample = 16;
726 } else if (!s->bits_per_raw_sample) {
727 s->bits_per_raw_sample = avctx->bits_per_raw_sample;
729 if (s->bits_per_raw_sample <= 8) {
730 av_log(avctx, AV_LOG_ERROR, "bits_per_raw_sample invalid\n");
731 return AVERROR_INVALIDDATA;
733 if (!s->ac && avctx->coder_type == -1) {
734 av_log(avctx, AV_LOG_INFO, "bits_per_raw_sample > 8, forcing coder 1\n");
738 av_log(avctx, AV_LOG_ERROR, "bits_per_raw_sample of more than 8 needs -coder 1 currently\n");
739 return AVERROR(ENOSYS);
741 s->version = FFMAX(s->version, 1);
742 case AV_PIX_FMT_GRAY8:
743 case AV_PIX_FMT_YUV444P:
744 case AV_PIX_FMT_YUV440P:
745 case AV_PIX_FMT_YUV422P:
746 case AV_PIX_FMT_YUV420P:
747 case AV_PIX_FMT_YUV411P:
748 case AV_PIX_FMT_YUV410P:
749 case AV_PIX_FMT_YUVA444P:
750 case AV_PIX_FMT_YUVA422P:
751 case AV_PIX_FMT_YUVA420P:
752 s->chroma_planes = desc->nb_components < 3 ? 0 : 1;
754 s->transparency = desc->nb_components == 4;
756 case AV_PIX_FMT_RGB32:
759 s->chroma_planes = 1;
761 case AV_PIX_FMT_0RGB32:
763 s->chroma_planes = 1;
765 case AV_PIX_FMT_GBRP9:
766 if (!avctx->bits_per_raw_sample)
767 s->bits_per_raw_sample = 9;
768 case AV_PIX_FMT_GBRP10:
769 if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample)
770 s->bits_per_raw_sample = 10;
771 case AV_PIX_FMT_GBRP12:
772 if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample)
773 s->bits_per_raw_sample = 12;
774 case AV_PIX_FMT_GBRP14:
775 if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample)
776 s->bits_per_raw_sample = 14;
777 else if (!s->bits_per_raw_sample)
778 s->bits_per_raw_sample = avctx->bits_per_raw_sample;
780 s->chroma_planes = 1;
781 s->version = FFMAX(s->version, 1);
783 av_log(avctx, AV_LOG_ERROR, "bits_per_raw_sample of more than 8 needs -coder 1 currently\n");
784 return AVERROR(ENOSYS);
788 av_log(avctx, AV_LOG_ERROR, "format not supported\n");
789 return AVERROR(ENOSYS);
791 if (s->transparency) {
792 av_log(avctx, AV_LOG_WARNING, "Storing alpha plane, this will require a recent FFV1 decoder to playback!\n");
794 if (avctx->context_model > 1U) {
795 av_log(avctx, AV_LOG_ERROR, "Invalid context model %d, valid values are 0 and 1\n", avctx->context_model);
796 return AVERROR(EINVAL);
800 for (i = 1; i < 256; i++)
801 s->state_transition[i] = ver2_state[i];
803 for (i = 0; i < 256; i++) {
804 s->quant_table_count = 2;
805 if (s->bits_per_raw_sample <= 8) {
806 s->quant_tables[0][0][i]= quant11[i];
807 s->quant_tables[0][1][i]= 11*quant11[i];
808 s->quant_tables[0][2][i]= 11*11*quant11[i];
809 s->quant_tables[1][0][i]= quant11[i];
810 s->quant_tables[1][1][i]= 11*quant11[i];
811 s->quant_tables[1][2][i]= 11*11*quant5 [i];
812 s->quant_tables[1][3][i]= 5*11*11*quant5 [i];
813 s->quant_tables[1][4][i]= 5*5*11*11*quant5 [i];
815 s->quant_tables[0][0][i]= quant9_10bit[i];
816 s->quant_tables[0][1][i]= 11*quant9_10bit[i];
817 s->quant_tables[0][2][i]= 11*11*quant9_10bit[i];
818 s->quant_tables[1][0][i]= quant9_10bit[i];
819 s->quant_tables[1][1][i]= 11*quant9_10bit[i];
820 s->quant_tables[1][2][i]= 11*11*quant5_10bit[i];
821 s->quant_tables[1][3][i]= 5*11*11*quant5_10bit[i];
822 s->quant_tables[1][4][i]= 5*5*11*11*quant5_10bit[i];
825 s->context_count[0] = (11 * 11 * 11 + 1) / 2;
826 s->context_count[1] = (11 * 11 * 5 * 5 * 5 + 1) / 2;
827 memcpy(s->quant_table, s->quant_tables[avctx->context_model],
828 sizeof(s->quant_table));
830 for (i = 0; i < s->plane_count; i++) {
831 PlaneContext *const p = &s->plane[i];
833 memcpy(p->quant_table, s->quant_table, sizeof(p->quant_table));
834 p->quant_table_index = avctx->context_model;
835 p->context_count = s->context_count[p->quant_table_index];
838 if ((ret = ffv1_allocate_initial_states(s)) < 0)
841 avctx->coded_frame = av_frame_alloc();
842 if (!avctx->coded_frame)
843 return AVERROR(ENOMEM);
845 avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
847 if (!s->transparency)
849 if (!s->chroma_planes && s->version > 3)
852 avcodec_get_chroma_sub_sample(avctx->pix_fmt, &s->chroma_h_shift, &s->chroma_v_shift);
853 s->picture_number = 0;
855 if (avctx->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2)) {
856 for (i = 0; i < s->quant_table_count; i++) {
857 s->rc_stat2[i] = av_mallocz(s->context_count[i] *
858 sizeof(*s->rc_stat2[i]));
860 return AVERROR(ENOMEM);
863 if (avctx->stats_in) {
864 char *p = avctx->stats_in;
865 uint8_t (*best_state)[256] = av_malloc_array(256, 256);
869 return AVERROR(ENOMEM);
871 av_assert0(s->version >= 2);
874 for (j = 0; j < 256; j++)
875 for (i = 0; i < 2; i++) {
876 s->rc_stat[j][i] = strtol(p, &next, 0);
878 av_log(avctx, AV_LOG_ERROR,
879 "2Pass file invalid at %d %d [%s]\n", j, i, p);
880 av_freep(&best_state);
881 return AVERROR_INVALIDDATA;
885 for (i = 0; i < s->quant_table_count; i++)
886 for (j = 0; j < s->context_count[i]; j++) {
887 for (k = 0; k < 32; k++)
888 for (m = 0; m < 2; m++) {
889 s->rc_stat2[i][j][k][m] = strtol(p, &next, 0);
891 av_log(avctx, AV_LOG_ERROR,
892 "2Pass file invalid at %d %d %d %d [%s]\n",
894 av_freep(&best_state);
895 return AVERROR_INVALIDDATA;
900 gob_count = strtol(p, &next, 0);
901 if (next == p || gob_count <= 0) {
902 av_log(avctx, AV_LOG_ERROR, "2Pass file invalid\n");
903 av_freep(&best_state);
904 return AVERROR_INVALIDDATA;
907 while (*p == '\n' || *p == ' ')
912 sort_stt(s, s->state_transition);
914 find_best_state(best_state, s->state_transition);
916 for (i = 0; i < s->quant_table_count; i++) {
917 for (k = 0; k < 32; k++) {
920 for (j = 0; j < s->context_count[i]; j++) {
922 if (s->rc_stat2[i][j][k][0] + s->rc_stat2[i][j][k][1] > 200 && j || a+b > 200) {
924 p = 256.0 * b / (a + b);
925 s->initial_states[i][jp][k] =
926 best_state[av_clip(round(p), 1, 255)][av_clip((a + b) / gob_count, 0, 255)];
927 for(jp++; jp<j; jp++)
928 s->initial_states[i][jp][k] = s->initial_states[i][jp-1][k];
931 a += s->rc_stat2[i][j][k][0];
932 b += s->rc_stat2[i][j][k][1];
934 p = 256.0 * b / (a + b);
936 s->initial_states[i][j][k] =
937 best_state[av_clip(round(p), 1, 255)][av_clip((a + b) / gob_count, 0, 255)];
941 av_freep(&best_state);
944 if (s->version > 1) {
945 s->num_v_slices = (avctx->width > 352 || avctx->height > 288 || !avctx->slices) ? 2 : 1;
946 for (; s->num_v_slices < 9; s->num_v_slices++) {
947 for (s->num_h_slices = s->num_v_slices; s->num_h_slices < 2*s->num_v_slices; s->num_h_slices++) {
948 if (avctx->slices == s->num_h_slices * s->num_v_slices && avctx->slices <= 64 || !avctx->slices)
952 av_log(avctx, AV_LOG_ERROR,
953 "Unsupported number %d of slices requested, please specify a "
954 "supported number with -slices (ex:4,6,9,12,16, ...)\n",
956 return AVERROR(ENOSYS);
958 if ((ret = write_extradata(s)) < 0)
962 if ((ret = ffv1_init_slice_contexts(s)) < 0)
964 if ((ret = ffv1_init_slices_state(s)) < 0)
967 #define STATS_OUT_SIZE 1024 * 1024 * 6
968 if (avctx->flags & CODEC_FLAG_PASS1) {
969 avctx->stats_out = av_mallocz(STATS_OUT_SIZE);
970 if (!avctx->stats_out)
971 return AVERROR(ENOMEM);
972 for (i = 0; i < s->quant_table_count; i++)
973 for (j = 0; j < s->slice_count; j++) {
974 FFV1Context *sf = s->slice_context[j];
975 av_assert0(!sf->rc_stat2[i]);
976 sf->rc_stat2[i] = av_mallocz(s->context_count[i] *
977 sizeof(*sf->rc_stat2[i]));
978 if (!sf->rc_stat2[i])
979 return AVERROR(ENOMEM);
986 static void encode_slice_header(FFV1Context *f, FFV1Context *fs)
988 RangeCoder *c = &fs->c;
989 uint8_t state[CONTEXT_SIZE];
991 memset(state, 128, sizeof(state));
993 put_symbol(c, state, (fs->slice_x +1)*f->num_h_slices / f->width , 0);
994 put_symbol(c, state, (fs->slice_y +1)*f->num_v_slices / f->height , 0);
995 put_symbol(c, state, (fs->slice_width +1)*f->num_h_slices / f->width -1, 0);
996 put_symbol(c, state, (fs->slice_height+1)*f->num_v_slices / f->height-1, 0);
997 for (j=0; j<f->plane_count; j++) {
998 put_symbol(c, state, f->plane[j].quant_table_index, 0);
999 av_assert0(f->plane[j].quant_table_index == f->avctx->context_model);
1001 if (!f->picture.f->interlaced_frame)
1002 put_symbol(c, state, 3, 0);
1004 put_symbol(c, state, 1 + !f->picture.f->top_field_first, 0);
1005 put_symbol(c, state, f->picture.f->sample_aspect_ratio.num, 0);
1006 put_symbol(c, state, f->picture.f->sample_aspect_ratio.den, 0);
1007 if (f->version > 3) {
1008 put_rac(c, state, fs->slice_coding_mode == 1);
1009 if (fs->slice_coding_mode == 1)
1010 ffv1_clear_slice_state(f, fs);
1011 put_symbol(c, state, fs->slice_coding_mode, 0);
1012 if (fs->slice_coding_mode != 1) {
1013 put_symbol(c, state, fs->slice_rct_by_coef, 0);
1014 put_symbol(c, state, fs->slice_rct_ry_coef, 0);
1019 static void choose_rct_params(FFV1Context *fs, uint8_t *src[3], const int stride[3], int w, int h)
1021 #define NB_Y_COEFF 15
1022 static const int rct_y_coeff[15][2] = {
1024 {1, 1}, // R + 2G + B
1035 {1, 2}, // R + G + 2B
1036 {2, 1}, // 2R + G + B
1041 int stat[NB_Y_COEFF] = {0};
1042 int x, y, i, p, best;
1044 int lbd = fs->bits_per_raw_sample <= 8;
1046 for (y = 0; y < h; y++) {
1047 int lastr=0, lastg=0, lastb=0;
1048 for (p = 0; p < 3; p++)
1049 sample[p] = fs->sample_buffer + p*w;
1051 for (x = 0; x < w; x++) {
1055 unsigned v = *((uint32_t*)(src[0] + x*4 + stride[0]*y));
1057 g = (v >> 8) & 0xFF;
1058 r = (v >> 16) & 0xFF;
1060 b = *((uint16_t*)(src[0] + x*2 + stride[0]*y));
1061 g = *((uint16_t*)(src[1] + x*2 + stride[1]*y));
1062 r = *((uint16_t*)(src[2] + x*2 + stride[2]*y));
1069 int bg = ag - sample[0][x];
1070 int bb = ab - sample[1][x];
1071 int br = ar - sample[2][x];
1076 for (i = 0; i<NB_Y_COEFF; i++) {
1077 stat[i] += FFABS(bg + ((br*rct_y_coeff[i][0] + bb*rct_y_coeff[i][1])>>2));
1092 for (i=1; i<NB_Y_COEFF; i++) {
1093 if (stat[i] < stat[best])
1097 fs->slice_rct_by_coef = rct_y_coeff[best][1];
1098 fs->slice_rct_ry_coef = rct_y_coeff[best][0];
1101 static int encode_slice(AVCodecContext *c, void *arg)
1103 FFV1Context *fs = *(void **)arg;
1104 FFV1Context *f = fs->avctx->priv_data;
1105 int width = fs->slice_width;
1106 int height = fs->slice_height;
1107 int x = fs->slice_x;
1108 int y = fs->slice_y;
1109 const AVFrame *const p = f->picture.f;
1110 const int ps = av_pix_fmt_desc_get(c->pix_fmt)->comp[0].step_minus1 + 1;
1112 RangeCoder c_bak = fs->c;
1113 uint8_t *planes[3] = {p->data[0] + ps*x + y*p->linesize[0],
1114 p->data[1] + ps*x + y*p->linesize[1],
1115 p->data[2] + ps*x + y*p->linesize[2]};
1117 fs->slice_coding_mode = 0;
1118 if (f->version > 3) {
1119 choose_rct_params(fs, planes, p->linesize, width, height);
1121 fs->slice_rct_by_coef = 1;
1122 fs->slice_rct_ry_coef = 1;
1126 if (c->coded_frame->key_frame)
1127 ffv1_clear_slice_state(f, fs);
1128 if (f->version > 2) {
1129 encode_slice_header(f, fs);
1133 put_rac(&fs->c, (uint8_t[]) { 129 }, 0);
1134 fs->ac_byte_count = f->version > 2 || (!x && !y) ? ff_rac_terminate(&fs->c) : 0;
1135 init_put_bits(&fs->pb,
1136 fs->c.bytestream_start + fs->ac_byte_count,
1137 fs->c.bytestream_end - fs->c.bytestream_start - fs->ac_byte_count);
1140 if (f->colorspace == 0) {
1141 const int chroma_width = FF_CEIL_RSHIFT(width, f->chroma_h_shift);
1142 const int chroma_height = FF_CEIL_RSHIFT(height, f->chroma_v_shift);
1143 const int cx = x >> f->chroma_h_shift;
1144 const int cy = y >> f->chroma_v_shift;
1146 ret = encode_plane(fs, p->data[0] + ps*x + y*p->linesize[0], width, height, p->linesize[0], 0);
1148 if (f->chroma_planes) {
1149 ret |= encode_plane(fs, p->data[1] + ps*cx+cy*p->linesize[1], chroma_width, chroma_height, p->linesize[1], 1);
1150 ret |= encode_plane(fs, p->data[2] + ps*cx+cy*p->linesize[2], chroma_width, chroma_height, p->linesize[2], 1);
1152 if (fs->transparency)
1153 ret |= encode_plane(fs, p->data[3] + ps*x + y*p->linesize[3], width, height, p->linesize[3], 2);
1155 ret = encode_rgb_frame(fs, planes, width, height, p->linesize);
1160 av_assert0(fs->slice_coding_mode == 0);
1161 if (fs->version < 4 || !fs->ac) {
1162 av_log(c, AV_LOG_ERROR, "Buffer too small\n");
1165 av_log(c, AV_LOG_DEBUG, "Coding slice as PCM\n");
1166 fs->slice_coding_mode = 1;
1174 static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
1175 const AVFrame *pict, int *got_packet)
1177 FFV1Context *f = avctx->priv_data;
1178 RangeCoder *const c = &f->slice_context[0]->c;
1179 AVFrame *const p = f->picture.f;
1181 uint8_t keystate = 128;
1184 int64_t maxsize = FF_MIN_BUFFER_SIZE
1185 + avctx->width*avctx->height*35LL*4;
1188 if (avctx->flags & CODEC_FLAG_PASS1) {
1190 char *p = avctx->stats_out;
1191 char *end = p + STATS_OUT_SIZE;
1193 memset(f->rc_stat, 0, sizeof(f->rc_stat));
1194 for (i = 0; i < f->quant_table_count; i++)
1195 memset(f->rc_stat2[i], 0, f->context_count[i] * sizeof(*f->rc_stat2[i]));
1197 for (j = 0; j < f->slice_count; j++) {
1198 FFV1Context *fs = f->slice_context[j];
1199 for (i = 0; i < 256; i++) {
1200 f->rc_stat[i][0] += fs->rc_stat[i][0];
1201 f->rc_stat[i][1] += fs->rc_stat[i][1];
1203 for (i = 0; i < f->quant_table_count; i++) {
1204 for (k = 0; k < f->context_count[i]; k++)
1205 for (m = 0; m < 32; m++) {
1206 f->rc_stat2[i][k][m][0] += fs->rc_stat2[i][k][m][0];
1207 f->rc_stat2[i][k][m][1] += fs->rc_stat2[i][k][m][1];
1212 for (j = 0; j < 256; j++) {
1213 snprintf(p, end - p, "%" PRIu64 " %" PRIu64 " ",
1214 f->rc_stat[j][0], f->rc_stat[j][1]);
1217 snprintf(p, end - p, "\n");
1219 for (i = 0; i < f->quant_table_count; i++) {
1220 for (j = 0; j < f->context_count[i]; j++)
1221 for (m = 0; m < 32; m++) {
1222 snprintf(p, end - p, "%" PRIu64 " %" PRIu64 " ",
1223 f->rc_stat2[i][j][m][0], f->rc_stat2[i][j][m][1]);
1227 snprintf(p, end - p, "%d\n", f->gob_count);
1233 maxsize = FF_MIN_BUFFER_SIZE + avctx->width*avctx->height*3LL*4;
1235 if ((ret = ff_alloc_packet2(avctx, pkt, maxsize)) < 0)
1238 ff_init_range_encoder(c, pkt->data, pkt->size);
1239 ff_build_rac_states(c, 0.05 * (1LL << 32), 256 - 8);
1242 if ((ret = av_frame_ref(p, pict)) < 0)
1244 avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
1246 if (avctx->gop_size == 0 || f->picture_number % avctx->gop_size == 0) {
1247 put_rac(c, &keystate, 1);
1248 avctx->coded_frame->key_frame = 1;
1252 put_rac(c, &keystate, 0);
1253 avctx->coded_frame->key_frame = 0;
1258 for (i = 1; i < 256; i++) {
1259 c->one_state[i] = f->state_transition[i];
1260 c->zero_state[256 - i] = 256 - c->one_state[i];
1264 for (i = 1; i < f->slice_count; i++) {
1265 FFV1Context *fs = f->slice_context[i];
1266 uint8_t *start = pkt->data + (pkt->size - used_count) * (int64_t)i / f->slice_count;
1267 int len = pkt->size / f->slice_count;
1268 ff_init_range_encoder(&fs->c, start, len);
1270 avctx->execute(avctx, encode_slice, &f->slice_context[0], NULL,
1271 f->slice_count, sizeof(void *));
1274 for (i = 0; i < f->slice_count; i++) {
1275 FFV1Context *fs = f->slice_context[i];
1279 uint8_t state = 129;
1280 put_rac(&fs->c, &state, 0);
1281 bytes = ff_rac_terminate(&fs->c);
1283 flush_put_bits(&fs->pb); // FIXME: nicer padding
1284 bytes = fs->ac_byte_count + (put_bits_count(&fs->pb) + 7) / 8;
1286 if (i > 0 || f->version > 2) {
1287 av_assert0(bytes < pkt->size / f->slice_count);
1288 memmove(buf_p, fs->c.bytestream_start, bytes);
1289 av_assert0(bytes < (1 << 24));
1290 AV_WB24(buf_p + bytes, bytes);
1296 v = av_crc(av_crc_get_table(AV_CRC_32_IEEE), 0, buf_p, bytes);
1297 AV_WL32(buf_p + bytes, v);
1303 if (avctx->flags & CODEC_FLAG_PASS1)
1304 avctx->stats_out[0] = '\0';
1306 f->picture_number++;
1307 pkt->size = buf_p - pkt->data;
1309 pkt->dts = pict->pts;
1310 pkt->flags |= AV_PKT_FLAG_KEY * avctx->coded_frame->key_frame;
1316 static av_cold int encode_close(AVCodecContext *avctx)
1318 av_frame_free(&avctx->coded_frame);
1323 #define OFFSET(x) offsetof(FFV1Context, x)
1324 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
1325 static const AVOption options[] = {
1326 { "slicecrc", "Protect slices with CRCs", OFFSET(ec), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE },
1330 static const AVClass ffv1_class = {
1331 .class_name = "ffv1 encoder",
1332 .item_name = av_default_item_name,
1334 .version = LIBAVUTIL_VERSION_INT,
1337 static const AVCodecDefault ffv1_defaults[] = {
1342 AVCodec ff_ffv1_encoder = {
1344 .long_name = NULL_IF_CONFIG_SMALL("FFmpeg video codec #1"),
1345 .type = AVMEDIA_TYPE_VIDEO,
1346 .id = AV_CODEC_ID_FFV1,
1347 .priv_data_size = sizeof(FFV1Context),
1348 .init = encode_init,
1349 .encode2 = encode_frame,
1350 .close = encode_close,
1351 .capabilities = CODEC_CAP_SLICE_THREADS | CODEC_CAP_DELAY,
1352 .pix_fmts = (const enum AVPixelFormat[]) {
1353 AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUV444P,
1354 AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV411P,
1355 AV_PIX_FMT_YUV410P, AV_PIX_FMT_0RGB32, AV_PIX_FMT_RGB32, AV_PIX_FMT_YUV420P16,
1356 AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16, AV_PIX_FMT_YUV444P9, AV_PIX_FMT_YUV422P9,
1357 AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10,
1358 AV_PIX_FMT_YUVA444P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA420P16,
1359 AV_PIX_FMT_YUVA444P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA420P10,
1360 AV_PIX_FMT_YUVA444P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA420P9,
1361 AV_PIX_FMT_GRAY16, AV_PIX_FMT_GRAY8, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10,
1362 AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14,
1366 .defaults = ffv1_defaults,
1367 .priv_class = &ffv1_class,