4 * Copyright (c) 2003-2012 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/avassert.h"
29 #include "libavutil/crc.h"
30 #include "libavutil/opt.h"
31 #include "libavutil/imgutils.h"
32 #include "libavutil/pixdesc.h"
33 #include "libavutil/timer.h"
37 #include "rangecoder.h"
42 static const int8_t quant5_10bit[256] = {
43 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1,
44 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
47 2, 2, 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, -1,
56 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -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, -0, -0, -0, -0, -0, -0, -0, -0, -0, -0,
61 static const int8_t quant5[256] = {
62 0, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
63 2, 2, 2, 2, 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, -1, -1, -1,
80 static const int8_t quant9_10bit[256] = {
81 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2,
82 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3,
83 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
84 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4,
85 4, 4, 4, 4, 4, 4, 4, 4, 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, -3, -3, -3, -3, -3, -3, -3,
94 -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3,
95 -3, -3, -3, -3, -3, -3, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2,
96 -2, -2, -2, -2, -1, -1, -1, -1, -1, -1, -1, -1, -0, -0, -0, -0,
99 static const int8_t quant11[256] = {
100 0, 1, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4,
101 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
102 4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
103 5, 5, 5, 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, -4, -4,
114 -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4,
115 -4, -4, -4, -4, -4, -3, -3, -3, -3, -3, -3, -3, -2, -2, -2, -1,
118 static const uint8_t ver2_state[256] = {
119 0, 10, 10, 10, 10, 16, 16, 16, 28, 16, 16, 29, 42, 49, 20, 49,
120 59, 25, 26, 26, 27, 31, 33, 33, 33, 34, 34, 37, 67, 38, 39, 39,
121 40, 40, 41, 79, 43, 44, 45, 45, 48, 48, 64, 50, 51, 52, 88, 52,
122 53, 74, 55, 57, 58, 58, 74, 60, 101, 61, 62, 84, 66, 66, 68, 69,
123 87, 82, 71, 97, 73, 73, 82, 75, 111, 77, 94, 78, 87, 81, 83, 97,
124 85, 83, 94, 86, 99, 89, 90, 99, 111, 92, 93, 134, 95, 98, 105, 98,
125 105, 110, 102, 108, 102, 118, 103, 106, 106, 113, 109, 112, 114, 112, 116, 125,
126 115, 116, 117, 117, 126, 119, 125, 121, 121, 123, 145, 124, 126, 131, 127, 129,
127 165, 130, 132, 138, 133, 135, 145, 136, 137, 139, 146, 141, 143, 142, 144, 148,
128 147, 155, 151, 149, 151, 150, 152, 157, 153, 154, 156, 168, 158, 162, 161, 160,
129 172, 163, 169, 164, 166, 184, 167, 170, 177, 174, 171, 173, 182, 176, 180, 178,
130 175, 189, 179, 181, 186, 183, 192, 185, 200, 187, 191, 188, 190, 197, 193, 196,
131 197, 194, 195, 196, 198, 202, 199, 201, 210, 203, 207, 204, 205, 206, 208, 214,
132 209, 211, 221, 212, 213, 215, 224, 216, 217, 218, 219, 220, 222, 228, 223, 225,
133 226, 224, 227, 229, 240, 230, 231, 232, 233, 234, 235, 236, 238, 239, 237, 242,
134 241, 243, 242, 244, 245, 246, 247, 248, 249, 250, 251, 252, 252, 253, 254, 255,
137 static void find_best_state(uint8_t best_state[256][256],
138 const uint8_t one_state[256])
143 for (i = 1; i < 256; i++)
144 l2tab[i] = log2(i / 256.0);
146 for (i = 0; i < 256; i++) {
147 double best_len[256];
148 double p = i / 256.0;
150 for (j = 0; j < 256; j++)
151 best_len[j] = 1 << 30;
153 for (j = FFMAX(i - 10, 1); j < FFMIN(i + 11, 256); j++) {
154 double occ[256] = { 0 };
157 for (k = 0; k < 256; k++) {
158 double newocc[256] = { 0 };
159 for (m = 1; m < 256; m++)
161 len -=occ[m]*( p *l2tab[ m]
162 + (1-p)*l2tab[256-m]);
164 if (len < best_len[k]) {
166 best_state[i][k] = j;
168 for (m = 0; m < 256; m++)
170 newocc[ one_state[ m]] += occ[m] * p;
171 newocc[256 - one_state[256 - m]] += occ[m] * (1 - p);
173 memcpy(occ, newocc, sizeof(occ));
179 static av_always_inline av_flatten void put_symbol_inline(RangeCoder *c,
180 uint8_t *state, int v,
182 uint64_t rc_stat[256][2],
183 uint64_t rc_stat2[32][2])
187 #define put_rac(C, S, B) \
190 rc_stat[*(S)][B]++; \
191 rc_stat2[(S) - state][B]++; \
197 const int a = FFABS(v);
198 const int e = av_log2(a);
199 put_rac(c, state + 0, 0);
201 for (i = 0; i < e; i++)
202 put_rac(c, state + 1 + i, 1); // 1..10
203 put_rac(c, state + 1 + i, 0);
205 for (i = e - 1; i >= 0; i--)
206 put_rac(c, state + 22 + i, (a >> i) & 1); // 22..31
209 put_rac(c, state + 11 + e, v < 0); // 11..21
211 for (i = 0; i < e; i++)
212 put_rac(c, state + 1 + FFMIN(i, 9), 1); // 1..10
213 put_rac(c, state + 1 + 9, 0);
215 for (i = e - 1; i >= 0; i--)
216 put_rac(c, state + 22 + FFMIN(i, 9), (a >> i) & 1); // 22..31
219 put_rac(c, state + 11 + 10, v < 0); // 11..21
222 put_rac(c, state + 0, 1);
227 static av_noinline void put_symbol(RangeCoder *c, uint8_t *state,
228 int v, int is_signed)
230 put_symbol_inline(c, state, v, is_signed, NULL, NULL);
234 static inline void put_vlc_symbol(PutBitContext *pb, VlcState *const state,
238 v = fold(v - state->bias, bits);
242 while (i < state->error_sum) { // FIXME: optimize
250 if (k == 0 && 2 * state->drift <= -state->count)
255 code = v ^ ((2 * state->drift + state->count) >> 31);
258 av_dlog(NULL, "v:%d/%d bias:%d error:%d drift:%d count:%d k:%d\n", v, code,
259 state->bias, state->error_sum, state->drift, state->count, k);
260 set_sr_golomb(pb, code, k, 12, bits);
262 update_vlc_state(state, v);
265 static av_always_inline int encode_line(FFV1Context *s, int w,
267 int plane_index, int bits)
269 PlaneContext *const p = &s->plane[plane_index];
270 RangeCoder *const c = &s->c;
272 int run_index = s->run_index;
277 if (c->bytestream_end - c->bytestream < w * 20) {
278 av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
279 return AVERROR_INVALIDDATA;
282 if (s->pb.buf_end - s->pb.buf - (put_bits_count(&s->pb) >> 3) < w * 4) {
283 av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
284 return AVERROR_INVALIDDATA;
288 for (x = 0; x < w; x++) {
291 context = get_context(p, sample[0] + x, sample[1] + x, sample[2] + x);
292 diff = sample[0][x] - predict(sample[0] + x, sample[1] + x);
299 diff = fold(diff, bits);
302 if (s->flags & CODEC_FLAG_PASS1) {
303 put_symbol_inline(c, p->state[context], diff, 1, s->rc_stat,
304 s->rc_stat2[p->quant_table_index][context]);
306 put_symbol_inline(c, p->state[context], diff, 1, NULL, NULL);
314 while (run_count >= 1 << ff_log2_run[run_index]) {
315 run_count -= 1 << ff_log2_run[run_index];
317 put_bits(&s->pb, 1, 1);
320 put_bits(&s->pb, 1 + ff_log2_run[run_index], run_count);
332 av_dlog(s->avctx, "count:%d index:%d, mode:%d, x:%d pos:%d\n",
333 run_count, run_index, run_mode, x,
334 (int)put_bits_count(&s->pb));
337 put_vlc_symbol(&s->pb, &p->vlc_state[context], diff, bits);
341 while (run_count >= 1 << ff_log2_run[run_index]) {
342 run_count -= 1 << ff_log2_run[run_index];
344 put_bits(&s->pb, 1, 1);
348 put_bits(&s->pb, 1, 1);
350 s->run_index = run_index;
355 static void encode_plane(FFV1Context *s, uint8_t *src, int w, int h,
356 int stride, int plane_index)
359 const int ring_size = s->avctx->context_model ? 3 : 2;
363 memset(s->sample_buffer, 0, ring_size * (w + 6) * sizeof(*s->sample_buffer));
365 for (y = 0; y < h; y++) {
366 for (i = 0; i < ring_size; i++)
367 sample[i] = s->sample_buffer + (w + 6) * ((h + i - y) % ring_size) + 3;
369 sample[0][-1]= sample[1][0 ];
370 sample[1][ w]= sample[1][w-1];
372 if (s->bits_per_raw_sample <= 8) {
373 for (x = 0; x < w; x++)
374 sample[0][x] = src[x + stride * y];
375 encode_line(s, w, sample, plane_index, 8);
377 if (s->packed_at_lsb) {
378 for (x = 0; x < w; x++) {
379 sample[0][x] = ((uint16_t*)(src + stride*y))[x];
382 for (x = 0; x < w; x++) {
383 sample[0][x] = ((uint16_t*)(src + stride*y))[x] >> (16 - s->bits_per_raw_sample);
386 encode_line(s, w, sample, plane_index, s->bits_per_raw_sample);
388 // STOP_TIMER("encode line") }
392 static void encode_rgb_frame(FFV1Context *s, uint8_t *src[3], int w, int h, int stride[3])
395 const int ring_size = s->avctx->context_model ? 3 : 2;
396 int16_t *sample[4][3];
397 int lbd = s->bits_per_raw_sample <= 8;
398 int bits = s->bits_per_raw_sample > 0 ? s->bits_per_raw_sample : 8;
399 int offset = 1 << bits;
403 memset(s->sample_buffer, 0, ring_size * MAX_PLANES *
404 (w + 6) * sizeof(*s->sample_buffer));
406 for (y = 0; y < h; y++) {
407 for (i = 0; i < ring_size; i++)
408 for (p = 0; p < MAX_PLANES; p++)
409 sample[p][i]= s->sample_buffer + p*ring_size*(w+6) + ((h+i-y)%ring_size)*(w+6) + 3;
411 for (x = 0; x < w; x++) {
412 int b, g, r, av_uninit(a);
414 unsigned v = *((uint32_t*)(src[0] + x*4 + stride[0]*y));
417 r = (v >> 16) & 0xFF;
420 b = *((uint16_t*)(src[0] + x*2 + stride[0]*y));
421 g = *((uint16_t*)(src[1] + x*2 + stride[1]*y));
422 r = *((uint16_t*)(src[2] + x*2 + stride[2]*y));
436 for (p = 0; p < 3 + s->transparency; p++) {
437 sample[p][0][-1] = sample[p][1][0 ];
438 sample[p][1][ w] = sample[p][1][w-1];
440 encode_line(s, w, sample[p], (p + 1) / 2, 9);
442 encode_line(s, w, sample[p], (p + 1) / 2, bits + 1);
447 static void write_quant_table(RangeCoder *c, int16_t *quant_table)
451 uint8_t state[CONTEXT_SIZE];
452 memset(state, 128, sizeof(state));
454 for (i = 1; i < 128; i++)
455 if (quant_table[i] != quant_table[i - 1]) {
456 put_symbol(c, state, i - last - 1, 0);
459 put_symbol(c, state, i - last - 1, 0);
462 static void write_quant_tables(RangeCoder *c,
463 int16_t quant_table[MAX_CONTEXT_INPUTS][256])
466 for (i = 0; i < 5; i++)
467 write_quant_table(c, quant_table[i]);
470 static void write_header(FFV1Context *f)
472 uint8_t state[CONTEXT_SIZE];
474 RangeCoder *const c = &f->slice_context[0]->c;
476 memset(state, 128, sizeof(state));
478 if (f->version < 2) {
479 put_symbol(c, state, f->version, 0);
480 put_symbol(c, state, f->ac, 0);
482 for (i = 1; i < 256; i++)
484 f->state_transition[i] - c->one_state[i], 1);
486 put_symbol(c, state, f->colorspace, 0); //YUV cs type
488 put_symbol(c, state, f->bits_per_raw_sample, 0);
489 put_rac(c, state, f->chroma_planes);
490 put_symbol(c, state, f->chroma_h_shift, 0);
491 put_symbol(c, state, f->chroma_v_shift, 0);
492 put_rac(c, state, f->transparency);
494 write_quant_tables(c, f->quant_table);
495 } else if (f->version < 3) {
496 put_symbol(c, state, f->slice_count, 0);
497 for (i = 0; i < f->slice_count; i++) {
498 FFV1Context *fs = f->slice_context[i];
500 (fs->slice_x + 1) * f->num_h_slices / f->width, 0);
502 (fs->slice_y + 1) * f->num_v_slices / f->height, 0);
504 (fs->slice_width + 1) * f->num_h_slices / f->width - 1,
507 (fs->slice_height + 1) * f->num_v_slices / f->height - 1,
509 for (j = 0; j < f->plane_count; j++) {
510 put_symbol(c, state, f->plane[j].quant_table_index, 0);
511 av_assert0(f->plane[j].quant_table_index == f->avctx->context_model);
517 static int write_extradata(FFV1Context *f)
519 RangeCoder *const c = &f->c;
520 uint8_t state[CONTEXT_SIZE];
522 uint8_t state2[32][CONTEXT_SIZE];
525 memset(state2, 128, sizeof(state2));
526 memset(state, 128, sizeof(state));
528 f->avctx->extradata_size = 10000 + 4 +
529 (11 * 11 * 5 * 5 * 5 + 11 * 11 * 11) * 32;
530 f->avctx->extradata = av_malloc(f->avctx->extradata_size);
531 ff_init_range_encoder(c, f->avctx->extradata, f->avctx->extradata_size);
532 ff_build_rac_states(c, 0.05 * (1LL << 32), 256 - 8);
534 put_symbol(c, state, f->version, 0);
535 if (f->version > 2) {
537 f->minor_version = 2;
538 put_symbol(c, state, f->minor_version, 0);
541 put_symbol(c, state, f->ac, 0);
543 for (i = 1; i < 256; i++)
544 put_symbol(c, state, f->state_transition[i] - c->one_state[i], 1);
546 put_symbol(c, state, f->colorspace, 0); // YUV cs type
547 put_symbol(c, state, f->bits_per_raw_sample, 0);
548 put_rac(c, state, f->chroma_planes);
549 put_symbol(c, state, f->chroma_h_shift, 0);
550 put_symbol(c, state, f->chroma_v_shift, 0);
551 put_rac(c, state, f->transparency);
552 put_symbol(c, state, f->num_h_slices - 1, 0);
553 put_symbol(c, state, f->num_v_slices - 1, 0);
555 put_symbol(c, state, f->quant_table_count, 0);
556 for (i = 0; i < f->quant_table_count; i++)
557 write_quant_tables(c, f->quant_tables[i]);
559 for (i = 0; i < f->quant_table_count; i++) {
560 for (j = 0; j < f->context_count[i] * CONTEXT_SIZE; j++)
561 if (f->initial_states[i] && f->initial_states[i][0][j] != 128)
563 if (j < f->context_count[i] * CONTEXT_SIZE) {
564 put_rac(c, state, 1);
565 for (j = 0; j < f->context_count[i]; j++)
566 for (k = 0; k < CONTEXT_SIZE; k++) {
567 int pred = j ? f->initial_states[i][j - 1][k] : 128;
568 put_symbol(c, state2[k],
569 (int8_t)(f->initial_states[i][j][k] - pred), 1);
572 put_rac(c, state, 0);
576 if (f->version > 2) {
577 put_symbol(c, state, f->ec, 0);
580 f->avctx->extradata_size = ff_rac_terminate(c);
581 v = av_crc(av_crc_get_table(AV_CRC_32_IEEE), 0, f->avctx->extradata, f->avctx->extradata_size);
582 AV_WL32(f->avctx->extradata + f->avctx->extradata_size, v);
583 f->avctx->extradata_size += 4;
588 static int sort_stt(FFV1Context *s, uint8_t stt[256])
590 int i, i2, changed, print = 0;
594 for (i = 12; i < 244; i++) {
595 for (i2 = i + 1; i2 < 245 && i2 < i + 4; i2++) {
597 #define COST(old, new) \
598 s->rc_stat[old][0] * -log2((256 - (new)) / 256.0) + \
599 s->rc_stat[old][1] * -log2((new) / 256.0)
601 #define COST2(old, new) \
602 COST(old, new) + COST(256 - (old), 256 - (new))
604 double size0 = COST2(i, i) + COST2(i2, i2);
605 double sizeX = COST2(i, i2) + COST2(i2, i);
606 if (size0 - sizeX > size0*(1e-14) && i != 128 && i2 != 128) {
608 FFSWAP(int, stt[i], stt[i2]);
609 FFSWAP(int, s->rc_stat[i][0], s->rc_stat[i2][0]);
610 FFSWAP(int, s->rc_stat[i][1], s->rc_stat[i2][1]);
612 FFSWAP(int, stt[256 - i], stt[256 - i2]);
613 FFSWAP(int, s->rc_stat[256 - i][0], s->rc_stat[256 - i2][0]);
614 FFSWAP(int, s->rc_stat[256 - i][1], s->rc_stat[256 - i2][1]);
616 for (j = 1; j < 256; j++) {
619 else if (stt[j] == i2)
622 if (stt[256 - j] == 256 - i)
623 stt[256 - j] = 256 - i2;
624 else if (stt[256 - j] == 256 - i2)
625 stt[256 - j] = 256 - i;
636 static av_cold int encode_init(AVCodecContext *avctx)
638 FFV1Context *s = avctx->priv_data;
639 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt);
642 ffv1_common_init(avctx);
646 if ((avctx->flags & (CODEC_FLAG_PASS1|CODEC_FLAG_PASS2)) || avctx->slices>1)
647 s->version = FFMAX(s->version, 2);
649 if (avctx->level == 3) {
654 s->ec = (s->version >= 3);
657 if (s->version >= 2 && avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
658 av_log(avctx, AV_LOG_ERROR, "Version 2 needed for requested features but version 2 is experimental and not enabled\n");
659 return AVERROR_INVALIDDATA;
662 s->ac = avctx->coder_type > 0 ? 2 : 0;
665 switch(avctx->pix_fmt) {
666 case AV_PIX_FMT_YUV444P9:
667 case AV_PIX_FMT_YUV422P9:
668 case AV_PIX_FMT_YUV420P9:
669 if (!avctx->bits_per_raw_sample)
670 s->bits_per_raw_sample = 9;
671 case AV_PIX_FMT_YUV444P10:
672 case AV_PIX_FMT_YUV420P10:
673 case AV_PIX_FMT_YUV422P10:
674 s->packed_at_lsb = 1;
675 if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample)
676 s->bits_per_raw_sample = 10;
677 case AV_PIX_FMT_GRAY16:
678 case AV_PIX_FMT_YUV444P16:
679 case AV_PIX_FMT_YUV422P16:
680 case AV_PIX_FMT_YUV420P16:
681 if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample) {
682 s->bits_per_raw_sample = 16;
683 } else if (!s->bits_per_raw_sample) {
684 s->bits_per_raw_sample = avctx->bits_per_raw_sample;
686 if (s->bits_per_raw_sample <= 8) {
687 av_log(avctx, AV_LOG_ERROR, "bits_per_raw_sample invalid\n");
688 return AVERROR_INVALIDDATA;
690 if (!s->ac && avctx->coder_type == -1) {
691 av_log(avctx, AV_LOG_INFO, "bits_per_raw_sample > 8, forcing coder 1\n");
695 av_log(avctx, AV_LOG_ERROR, "bits_per_raw_sample of more than 8 needs -coder 1 currently\n");
696 return AVERROR(ENOSYS);
698 s->version = FFMAX(s->version, 1);
699 case AV_PIX_FMT_GRAY8:
700 case AV_PIX_FMT_YUV444P:
701 case AV_PIX_FMT_YUV440P:
702 case AV_PIX_FMT_YUV422P:
703 case AV_PIX_FMT_YUV420P:
704 case AV_PIX_FMT_YUV411P:
705 case AV_PIX_FMT_YUV410P:
706 s->chroma_planes = desc->nb_components < 3 ? 0 : 1;
709 case AV_PIX_FMT_YUVA444P:
710 case AV_PIX_FMT_YUVA422P:
711 case AV_PIX_FMT_YUVA420P:
712 s->chroma_planes = 1;
716 case AV_PIX_FMT_RGB32:
720 case AV_PIX_FMT_0RGB32:
723 case AV_PIX_FMT_GBRP9:
724 if (!avctx->bits_per_raw_sample)
725 s->bits_per_raw_sample = 9;
726 case AV_PIX_FMT_GBRP10:
727 if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample)
728 s->bits_per_raw_sample = 10;
729 case AV_PIX_FMT_GBRP12:
730 if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample)
731 s->bits_per_raw_sample = 12;
732 case AV_PIX_FMT_GBRP14:
733 if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample)
734 s->bits_per_raw_sample = 14;
735 else if (!s->bits_per_raw_sample)
736 s->bits_per_raw_sample = avctx->bits_per_raw_sample;
738 s->chroma_planes = 1;
739 s->version = FFMAX(s->version, 1);
742 av_log(avctx, AV_LOG_ERROR, "format not supported\n");
743 return AVERROR(ENOSYS);
745 if (s->transparency) {
746 av_log(avctx, AV_LOG_WARNING, "Storing alpha plane, this will require a recent FFV1 decoder to playback!\n");
748 if (avctx->context_model > 1U) {
749 av_log(avctx, AV_LOG_ERROR, "Invalid context model %d, valid values are 0 and 1\n", avctx->context_model);
750 return AVERROR(EINVAL);
754 for (i = 1; i < 256; i++)
755 s->state_transition[i] = ver2_state[i];
757 for (i = 0; i < 256; i++) {
758 s->quant_table_count = 2;
759 if (s->bits_per_raw_sample <= 8) {
760 s->quant_tables[0][0][i]= quant11[i];
761 s->quant_tables[0][1][i]= 11*quant11[i];
762 s->quant_tables[0][2][i]= 11*11*quant11[i];
763 s->quant_tables[1][0][i]= quant11[i];
764 s->quant_tables[1][1][i]= 11*quant11[i];
765 s->quant_tables[1][2][i]= 11*11*quant5 [i];
766 s->quant_tables[1][3][i]= 5*11*11*quant5 [i];
767 s->quant_tables[1][4][i]= 5*5*11*11*quant5 [i];
769 s->quant_tables[0][0][i]= quant9_10bit[i];
770 s->quant_tables[0][1][i]= 11*quant9_10bit[i];
771 s->quant_tables[0][2][i]= 11*11*quant9_10bit[i];
772 s->quant_tables[1][0][i]= quant9_10bit[i];
773 s->quant_tables[1][1][i]= 11*quant9_10bit[i];
774 s->quant_tables[1][2][i]= 11*11*quant5_10bit[i];
775 s->quant_tables[1][3][i]= 5*11*11*quant5_10bit[i];
776 s->quant_tables[1][4][i]= 5*5*11*11*quant5_10bit[i];
779 s->context_count[0] = (11 * 11 * 11 + 1) / 2;
780 s->context_count[1] = (11 * 11 * 5 * 5 * 5 + 1) / 2;
781 memcpy(s->quant_table, s->quant_tables[avctx->context_model],
782 sizeof(s->quant_table));
784 for (i = 0; i < s->plane_count; i++) {
785 PlaneContext *const p = &s->plane[i];
787 memcpy(p->quant_table, s->quant_table, sizeof(p->quant_table));
788 p->quant_table_index = avctx->context_model;
789 p->context_count = s->context_count[p->quant_table_index];
792 if ((ret = ffv1_allocate_initial_states(s)) < 0)
795 avctx->coded_frame = &s->picture;
796 if (!s->transparency)
798 avcodec_get_chroma_sub_sample(avctx->pix_fmt, &s->chroma_h_shift, &s->chroma_v_shift);
799 s->picture_number = 0;
801 if (avctx->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2)) {
802 for (i = 0; i < s->quant_table_count; i++) {
803 s->rc_stat2[i] = av_mallocz(s->context_count[i] *
804 sizeof(*s->rc_stat2[i]));
806 return AVERROR(ENOMEM);
809 if (avctx->stats_in) {
810 char *p = avctx->stats_in;
811 uint8_t best_state[256][256];
815 av_assert0(s->version >= 2);
818 for (j = 0; j < 256; j++)
819 for (i = 0; i < 2; i++) {
820 s->rc_stat[j][i] = strtol(p, &next, 0);
822 av_log(avctx, AV_LOG_ERROR,
823 "2Pass file invalid at %d %d [%s]\n", j, i, p);
824 return AVERROR_INVALIDDATA;
828 for (i = 0; i < s->quant_table_count; i++)
829 for (j = 0; j < s->context_count[i]; j++) {
830 for (k = 0; k < 32; k++)
831 for (m = 0; m < 2; m++) {
832 s->rc_stat2[i][j][k][m] = strtol(p, &next, 0);
834 av_log(avctx, AV_LOG_ERROR,
835 "2Pass file invalid at %d %d %d %d [%s]\n",
837 return AVERROR_INVALIDDATA;
842 gob_count = strtol(p, &next, 0);
843 if (next == p || gob_count <= 0) {
844 av_log(avctx, AV_LOG_ERROR, "2Pass file invalid\n");
845 return AVERROR_INVALIDDATA;
848 while (*p == '\n' || *p == ' ')
853 sort_stt(s, s->state_transition);
855 find_best_state(best_state, s->state_transition);
857 for (i = 0; i < s->quant_table_count; i++) {
858 for (k = 0; k < 32; k++) {
861 for (j = 0; j < s->context_count[i]; j++) {
863 if (s->rc_stat2[i][j][k][0] + s->rc_stat2[i][j][k][1] > 200 && j || a+b > 200) {
865 p = 256.0 * b / (a + b);
866 s->initial_states[i][jp][k] =
867 best_state[av_clip(round(p), 1, 255)][av_clip((a + b) / gob_count, 0, 255)];
868 for(jp++; jp<j; jp++)
869 s->initial_states[i][jp][k] = s->initial_states[i][jp-1][k];
872 a += s->rc_stat2[i][j][k][0];
873 b += s->rc_stat2[i][j][k][1];
875 p = 256.0 * b / (a + b);
877 s->initial_states[i][j][k] =
878 best_state[av_clip(round(p), 1, 255)][av_clip((a + b) / gob_count, 0, 255)];
884 if (s->version > 1) {
885 s->num_v_slices = (avctx->width > 352 || avctx->height > 288 || !avctx->slices) ? 2 : 1;
886 for (; s->num_v_slices < 9; s->num_v_slices++) {
887 for (s->num_h_slices = s->num_v_slices; s->num_h_slices < 2*s->num_v_slices; s->num_h_slices++) {
888 if (avctx->slices == s->num_h_slices * s->num_v_slices && avctx->slices <= 64 || !avctx->slices)
892 av_log(avctx, AV_LOG_ERROR,
893 "Unsupported number %d of slices requested, please specify a "
894 "supported number with -slices (ex:4,6,9,12,16, ...)\n",
896 return AVERROR(ENOSYS);
901 if ((ret = ffv1_init_slice_contexts(s)) < 0)
903 if ((ret = ffv1_init_slices_state(s)) < 0)
906 #define STATS_OUT_SIZE 1024 * 1024 * 6
907 if (avctx->flags & CODEC_FLAG_PASS1) {
908 avctx->stats_out = av_mallocz(STATS_OUT_SIZE);
909 if (!avctx->stats_out)
910 return AVERROR(ENOMEM);
911 for (i = 0; i < s->quant_table_count; i++)
912 for (j = 0; j < s->slice_count; j++) {
913 FFV1Context *sf = s->slice_context[j];
914 av_assert0(!sf->rc_stat2[i]);
915 sf->rc_stat2[i] = av_mallocz(s->context_count[i] *
916 sizeof(*sf->rc_stat2[i]));
917 if (!sf->rc_stat2[i])
918 return AVERROR(ENOMEM);
925 static void encode_slice_header(FFV1Context *f, FFV1Context *fs)
927 RangeCoder *c = &fs->c;
928 uint8_t state[CONTEXT_SIZE];
930 memset(state, 128, sizeof(state));
932 put_symbol(c, state, (fs->slice_x +1)*f->num_h_slices / f->width , 0);
933 put_symbol(c, state, (fs->slice_y +1)*f->num_v_slices / f->height , 0);
934 put_symbol(c, state, (fs->slice_width +1)*f->num_h_slices / f->width -1, 0);
935 put_symbol(c, state, (fs->slice_height+1)*f->num_v_slices / f->height-1, 0);
936 for (j=0; j<f->plane_count; j++) {
937 put_symbol(c, state, f->plane[j].quant_table_index, 0);
938 av_assert0(f->plane[j].quant_table_index == f->avctx->context_model);
940 if (!f->picture.interlaced_frame)
941 put_symbol(c, state, 3, 0);
943 put_symbol(c, state, 1 + !f->picture.top_field_first, 0);
944 put_symbol(c, state, f->picture.sample_aspect_ratio.num, 0);
945 put_symbol(c, state, f->picture.sample_aspect_ratio.den, 0);
948 static int encode_slice(AVCodecContext *c, void *arg)
950 FFV1Context *fs = *(void **)arg;
951 FFV1Context *f = fs->avctx->priv_data;
952 int width = fs->slice_width;
953 int height = fs->slice_height;
956 AVFrame *const p = &f->picture;
957 const int ps = av_pix_fmt_desc_get(c->pix_fmt)->comp[0].step_minus1 + 1;
960 ffv1_clear_slice_state(f, fs);
961 if (f->version > 2) {
962 encode_slice_header(f, fs);
966 put_rac(&fs->c, (uint8_t[]) { 129 }, 0);
967 fs->ac_byte_count = f->version > 2 || (!x && !y) ? ff_rac_terminate(&fs->c) : 0;
968 init_put_bits(&fs->pb,
969 fs->c.bytestream_start + fs->ac_byte_count,
970 fs->c.bytestream_end - fs->c.bytestream_start - fs->ac_byte_count);
973 if (f->colorspace == 0) {
974 const int chroma_width = -((-width) >> f->chroma_h_shift);
975 const int chroma_height = -((-height) >> f->chroma_v_shift);
976 const int cx = x >> f->chroma_h_shift;
977 const int cy = y >> f->chroma_v_shift;
979 encode_plane(fs, p->data[0] + ps*x + y*p->linesize[0], width, height, p->linesize[0], 0);
981 if (f->chroma_planes) {
982 encode_plane(fs, p->data[1] + ps*cx+cy*p->linesize[1], chroma_width, chroma_height, p->linesize[1], 1);
983 encode_plane(fs, p->data[2] + ps*cx+cy*p->linesize[2], chroma_width, chroma_height, p->linesize[2], 1);
985 if (fs->transparency)
986 encode_plane(fs, p->data[3] + ps*x + y*p->linesize[3], width, height, p->linesize[3], 2);
988 uint8_t *planes[3] = {p->data[0] + ps*x + y*p->linesize[0],
989 p->data[1] + ps*x + y*p->linesize[1],
990 p->data[2] + ps*x + y*p->linesize[2]};
991 encode_rgb_frame(fs, planes, width, height, p->linesize);
998 static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
999 const AVFrame *pict, int *got_packet)
1001 FFV1Context *f = avctx->priv_data;
1002 RangeCoder *const c = &f->slice_context[0]->c;
1003 AVFrame *const p = &f->picture;
1005 uint8_t keystate = 128;
1009 if ((ret = ff_alloc_packet2(avctx, pkt, avctx->width*avctx->height*((8*2+1+1)*4)/8
1010 + FF_MIN_BUFFER_SIZE)) < 0)
1013 ff_init_range_encoder(c, pkt->data, pkt->size);
1014 ff_build_rac_states(c, 0.05 * (1LL << 32), 256 - 8);
1017 p->pict_type = AV_PICTURE_TYPE_I;
1019 if (avctx->gop_size == 0 || f->picture_number % avctx->gop_size == 0) {
1020 put_rac(c, &keystate, 1);
1025 put_rac(c, &keystate, 0);
1031 for (i = 1; i < 256; i++) {
1032 c->one_state[i] = f->state_transition[i];
1033 c->zero_state[256 - i] = 256 - c->one_state[i];
1037 for (i = 1; i < f->slice_count; i++) {
1038 FFV1Context *fs = f->slice_context[i];
1039 uint8_t *start = pkt->data + (pkt->size - used_count) * (int64_t)i / f->slice_count;
1040 int len = pkt->size / f->slice_count;
1041 ff_init_range_encoder(&fs->c, start, len);
1043 avctx->execute(avctx, encode_slice, &f->slice_context[0], NULL,
1044 f->slice_count, sizeof(void *));
1047 for (i = 0; i < f->slice_count; i++) {
1048 FFV1Context *fs = f->slice_context[i];
1052 uint8_t state = 129;
1053 put_rac(&fs->c, &state, 0);
1054 bytes = ff_rac_terminate(&fs->c);
1056 flush_put_bits(&fs->pb); // FIXME: nicer padding
1057 bytes = fs->ac_byte_count + (put_bits_count(&fs->pb) + 7) / 8;
1059 if (i > 0 || f->version > 2) {
1060 av_assert0(bytes < pkt->size / f->slice_count);
1061 memmove(buf_p, fs->c.bytestream_start, bytes);
1062 av_assert0(bytes < (1 << 24));
1063 AV_WB24(buf_p + bytes, bytes);
1069 v = av_crc(av_crc_get_table(AV_CRC_32_IEEE), 0, buf_p, bytes);
1070 AV_WL32(buf_p + bytes, v);
1076 if ((avctx->flags & CODEC_FLAG_PASS1) && (f->picture_number & 31) == 0) {
1078 char *p = avctx->stats_out;
1079 char *end = p + STATS_OUT_SIZE;
1081 memset(f->rc_stat, 0, sizeof(f->rc_stat));
1082 for (i = 0; i < f->quant_table_count; i++)
1083 memset(f->rc_stat2[i], 0, f->context_count[i] * sizeof(*f->rc_stat2[i]));
1085 for (j = 0; j < f->slice_count; j++) {
1086 FFV1Context *fs = f->slice_context[j];
1087 for (i = 0; i < 256; i++) {
1088 f->rc_stat[i][0] += fs->rc_stat[i][0];
1089 f->rc_stat[i][1] += fs->rc_stat[i][1];
1091 for (i = 0; i < f->quant_table_count; i++) {
1092 for (k = 0; k < f->context_count[i]; k++)
1093 for (m = 0; m < 32; m++) {
1094 f->rc_stat2[i][k][m][0] += fs->rc_stat2[i][k][m][0];
1095 f->rc_stat2[i][k][m][1] += fs->rc_stat2[i][k][m][1];
1100 for (j = 0; j < 256; j++) {
1101 snprintf(p, end - p, "%" PRIu64 " %" PRIu64 " ",
1102 f->rc_stat[j][0], f->rc_stat[j][1]);
1105 snprintf(p, end - p, "\n");
1107 for (i = 0; i < f->quant_table_count; i++) {
1108 for (j = 0; j < f->context_count[i]; j++)
1109 for (m = 0; m < 32; m++) {
1110 snprintf(p, end - p, "%" PRIu64 " %" PRIu64 " ",
1111 f->rc_stat2[i][j][m][0], f->rc_stat2[i][j][m][1]);
1115 snprintf(p, end - p, "%d\n", f->gob_count);
1116 } else if (avctx->flags & CODEC_FLAG_PASS1)
1117 avctx->stats_out[0] = '\0';
1119 f->picture_number++;
1120 pkt->size = buf_p - pkt->data;
1121 pkt->flags |= AV_PKT_FLAG_KEY * p->key_frame;
1127 #define OFFSET(x) offsetof(FFV1Context, x)
1128 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
1129 static const AVOption options[] = {
1130 { "slicecrc", "Protect slices with CRCs", OFFSET(ec), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE },
1134 static const AVClass class = {
1135 .class_name = "ffv1 encoder",
1136 .item_name = av_default_item_name,
1138 .version = LIBAVUTIL_VERSION_INT,
1141 static const AVCodecDefault ffv1_defaults[] = {
1146 AVCodec ff_ffv1_encoder = {
1148 .type = AVMEDIA_TYPE_VIDEO,
1149 .id = AV_CODEC_ID_FFV1,
1150 .priv_data_size = sizeof(FFV1Context),
1151 .init = encode_init,
1152 .encode2 = encode_frame,
1153 .close = ffv1_close,
1154 .capabilities = CODEC_CAP_SLICE_THREADS,
1155 .pix_fmts = (const enum AVPixelFormat[]) {
1156 AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUV444P,
1157 AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV411P,
1158 AV_PIX_FMT_YUV410P, AV_PIX_FMT_0RGB32, AV_PIX_FMT_RGB32, AV_PIX_FMT_YUV420P16,
1159 AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16, AV_PIX_FMT_YUV444P9, AV_PIX_FMT_YUV422P9,
1160 AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10,
1161 AV_PIX_FMT_GRAY16, AV_PIX_FMT_GRAY8, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10,
1162 AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14,
1166 .long_name = NULL_IF_CONFIG_SMALL("FFmpeg video codec #1"),
1167 .defaults = ffv1_defaults,
1168 .priv_class = &class,