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Imported Debian version 2.5.3~trusty1
[deb_ffmpeg.git] / ffmpeg / libavcodec / ffv1dec.c
CommitLineData
2ba45a60
DM		 1/*
2 * FFV1 decoder
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) decoder
26 */
27
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"
34#include "avcodec.h"
35#include "internal.h"
36#include "get_bits.h"
37#include "rangecoder.h"
38#include "golomb.h"
39#include "mathops.h"
40#include "ffv1.h"
41
42static inline av_flatten int get_symbol_inline(RangeCoder *c, uint8_t *state,
43 int is_signed)
44{
45 if (get_rac(c, state + 0))
46 return 0;
47 else {
48 int i, e, a;
49 e = 0;
50 while (get_rac(c, state + 1 + FFMIN(e, 9))) // 1..10
51 e++;
52
53 a = 1;
54 for (i = e - 1; i >= 0; i--)
55 a += a + get_rac(c, state + 22 + FFMIN(i, 9)); // 22..31
56
57 e = -(is_signed && get_rac(c, state + 11 + FFMIN(e, 10))); // 11..21
58 return (a ^ e) - e;
59 }
60}
61
62static av_noinline int get_symbol(RangeCoder *c, uint8_t *state, int is_signed)
63{
64 return get_symbol_inline(c, state, is_signed);
65}
66
67static inline int get_vlc_symbol(GetBitContext *gb, VlcState *const state,
68 int bits)
69{
70 int k, i, v, ret;
71
72 i = state->count;
73 k = 0;
74 while (i < state->error_sum) { // FIXME: optimize
75 k++;
76 i += i;
77 }
78
79 v = get_sr_golomb(gb, k, 12, bits);
80 av_dlog(NULL, "v:%d bias:%d error:%d drift:%d count:%d k:%d",
81 v, state->bias, state->error_sum, state->drift, state->count, k);
82
83#if 0 // JPEG LS
84 if (k == 0 && 2 * state->drift <= -state->count)
85 v ^= (-1);
86#else
87 v ^= ((2 * state->drift + state->count) >> 31);
88#endif
89
90 ret = fold(v + state->bias, bits);
91
92 update_vlc_state(state, v);
93
94 return ret;
95}
96
97static av_always_inline void decode_line(FFV1Context *s, int w,
98 int16_t *sample[2],
99 int plane_index, int bits)
100{
101 PlaneContext *const p = &s->plane[plane_index];
102 RangeCoder *const c = &s->c;
103 int x;
104 int run_count = 0;
105 int run_mode = 0;
106 int run_index = s->run_index;
107
108 if (s->slice_coding_mode == 1) {
109 int i;
110 for (x = 0; x < w; x++) {
111 int v = 0;
112 for (i=0; i<bits; i++) {
113 uint8_t state = 128;
114 v += v + get_rac(c, &state);
115 }
116 sample[1][x] = v;
117 }
118 return;
119 }
120
121 for (x = 0; x < w; x++) {
122 int diff, context, sign;
123
124 context = get_context(p, sample[1] + x, sample[0] + x, sample[1] + x);
125 if (context < 0) {
126 context = -context;
127 sign = 1;
128 } else
129 sign = 0;
130
131 av_assert2(context < p->context_count);
132
133 if (s->ac) {
134 diff = get_symbol_inline(c, p->state[context], 1);
135 } else {
136 if (context == 0 && run_mode == 0)
137 run_mode = 1;
138
139 if (run_mode) {
140 if (run_count == 0 && run_mode == 1) {
141 if (get_bits1(&s->gb)) {
142 run_count = 1 << ff_log2_run[run_index];
143 if (x + run_count <= w)
144 run_index++;
145 } else {
146 if (ff_log2_run[run_index])
147 run_count = get_bits(&s->gb, ff_log2_run[run_index]);
148 else
149 run_count = 0;
150 if (run_index)
151 run_index--;
152 run_mode = 2;
153 }
154 }
155 run_count--;
156 if (run_count < 0) {
157 run_mode = 0;
158 run_count = 0;
159 diff = get_vlc_symbol(&s->gb, &p->vlc_state[context],
160 bits);
161 if (diff >= 0)
162 diff++;
163 } else
164 diff = 0;
165 } else
166 diff = get_vlc_symbol(&s->gb, &p->vlc_state[context], bits);
167
168 av_dlog(s->avctx, "count:%d index:%d, mode:%d, x:%d pos:%d\n",
169 run_count, run_index, run_mode, x, get_bits_count(&s->gb));
170 }
171
172 if (sign)
173 diff = -diff;
174
175 sample[1][x] = (predict(sample[1] + x, sample[0] + x) + diff) &
176 ((1 << bits) - 1);
177 }
178 s->run_index = run_index;
179}
180
181static void decode_plane(FFV1Context *s, uint8_t *src,
182 int w, int h, int stride, int plane_index)
183{
184 int x, y;
185 int16_t *sample[2];
186 sample[0] = s->sample_buffer + 3;
187 sample[1] = s->sample_buffer + w + 6 + 3;
188
189 s->run_index = 0;
190
191 memset(s->sample_buffer, 0, 2 * (w + 6) * sizeof(*s->sample_buffer));
192
193 for (y = 0; y < h; y++) {
194 int16_t *temp = sample[0]; // FIXME: try a normal buffer
195
196 sample[0] = sample[1];
197 sample[1] = temp;
198
199 sample[1][-1] = sample[0][0];
200 sample[0][w] = sample[0][w - 1];
201
202// { START_TIMER
203 if (s->avctx->bits_per_raw_sample <= 8) {
204 decode_line(s, w, sample, plane_index, 8);
205 for (x = 0; x < w; x++)
206 src[x + stride * y] = sample[1][x];
207 } else {
208 decode_line(s, w, sample, plane_index, s->avctx->bits_per_raw_sample);
209 if (s->packed_at_lsb) {
210 for (x = 0; x < w; x++) {
211 ((uint16_t*)(src + stride*y))[x] = sample[1][x];
212 }
213 } else {
214 for (x = 0; x < w; x++) {
215 ((uint16_t*)(src + stride*y))[x] = sample[1][x] << (16 - s->avctx->bits_per_raw_sample);
216 }
217 }
218 }
219// STOP_TIMER("decode-line") }
220 }
221}
222
223static void decode_rgb_frame(FFV1Context *s, uint8_t *src[3], int w, int h, int stride[3])
224{
225 int x, y, p;
226 int16_t *sample[4][2];
227 int lbd = s->avctx->bits_per_raw_sample <= 8;
228 int bits = s->avctx->bits_per_raw_sample > 0 ? s->avctx->bits_per_raw_sample : 8;
229 int offset = 1 << bits;
230
231 for (x = 0; x < 4; x++) {
232 sample[x][0] = s->sample_buffer + x * 2 * (w + 6) + 3;
233 sample[x][1] = s->sample_buffer + (x * 2 + 1) * (w + 6) + 3;
234 }
235
236 s->run_index = 0;
237
238 memset(s->sample_buffer, 0, 8 * (w + 6) * sizeof(*s->sample_buffer));
239
240 for (y = 0; y < h; y++) {
241 for (p = 0; p < 3 + s->transparency; p++) {
242 int16_t *temp = sample[p][0]; // FIXME: try a normal buffer
243
244 sample[p][0] = sample[p][1];
245 sample[p][1] = temp;
246
247 sample[p][1][-1]= sample[p][0][0 ];
248 sample[p][0][ w]= sample[p][0][w-1];
249 if (lbd && s->slice_coding_mode == 0)
250 decode_line(s, w, sample[p], (p + 1)/2, 9);
251 else
252 decode_line(s, w, sample[p], (p + 1)/2, bits + (s->slice_coding_mode != 1));
253 }
254 for (x = 0; x < w; x++) {
255 int g = sample[0][1][x];
256 int b = sample[1][1][x];
257 int r = sample[2][1][x];
258 int a = sample[3][1][x];
259
260 if (s->slice_coding_mode != 1) {
261 b -= offset;
262 r -= offset;
263 g -= (b * s->slice_rct_by_coef + r * s->slice_rct_ry_coef) >> 2;
264 b += g;
265 r += g;
266 }
267
268 if (lbd)
269 *((uint32_t*)(src[0] + x*4 + stride[0]*y)) = b + (g<<8) + (r<<16) + (a<<24);
270 else {
271 *((uint16_t*)(src[0] + x*2 + stride[0]*y)) = b;
272 *((uint16_t*)(src[1] + x*2 + stride[1]*y)) = g;
273 *((uint16_t*)(src[2] + x*2 + stride[2]*y)) = r;
274 }
275 }
276 }
277}
278
279static int decode_slice_header(FFV1Context *f, FFV1Context *fs)
280{
281 RangeCoder *c = &fs->c;
282 uint8_t state[CONTEXT_SIZE];
283 unsigned ps, i, context_count;
284 memset(state, 128, sizeof(state));
285
286 av_assert0(f->version > 2);
287
288 fs->slice_x = get_symbol(c, state, 0) * f->width ;
289 fs->slice_y = get_symbol(c, state, 0) * f->height;
290 fs->slice_width = (get_symbol(c, state, 0) + 1) * f->width + fs->slice_x;
291 fs->slice_height = (get_symbol(c, state, 0) + 1) * f->height + fs->slice_y;
292
293 fs->slice_x /= f->num_h_slices;
294 fs->slice_y /= f->num_v_slices;
295 fs->slice_width = fs->slice_width /f->num_h_slices - fs->slice_x;
296 fs->slice_height = fs->slice_height/f->num_v_slices - fs->slice_y;
297 if ((unsigned)fs->slice_width > f->width || (unsigned)fs->slice_height > f->height)
298 return -1;
299 if ( (unsigned)fs->slice_x + (uint64_t)fs->slice_width > f->width
300 || (unsigned)fs->slice_y + (uint64_t)fs->slice_height > f->height)
301 return -1;
302
303 for (i = 0; i < f->plane_count; i++) {
304 PlaneContext * const p = &fs->plane[i];
305 int idx = get_symbol(c, state, 0);
306 if (idx > (unsigned)f->quant_table_count) {
307 av_log(f->avctx, AV_LOG_ERROR, "quant_table_index out of range\n");
308 return -1;
309 }
310 p->quant_table_index = idx;
311 memcpy(p->quant_table, f->quant_tables[idx], sizeof(p->quant_table));
312 context_count = f->context_count[idx];
313
314 if (p->context_count < context_count) {
315 av_freep(&p->state);
316 av_freep(&p->vlc_state);
317 }
318 p->context_count = context_count;
319 }
320
321 ps = get_symbol(c, state, 0);
322 if (ps == 1) {
323 f->cur->interlaced_frame = 1;
324 f->cur->top_field_first = 1;
325 } else if (ps == 2) {
326 f->cur->interlaced_frame = 1;
327 f->cur->top_field_first = 0;
328 } else if (ps == 3) {
329 f->cur->interlaced_frame = 0;
330 }
331 f->cur->sample_aspect_ratio.num = get_symbol(c, state, 0);
332 f->cur->sample_aspect_ratio.den = get_symbol(c, state, 0);
333
334 if (av_image_check_sar(f->width, f->height,
335 f->cur->sample_aspect_ratio) < 0) {
336 av_log(f->avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
337 f->cur->sample_aspect_ratio.num,
338 f->cur->sample_aspect_ratio.den);
339 f->cur->sample_aspect_ratio = (AVRational){ 0, 1 };
340 }
341
342 if (fs->version > 3) {
343 fs->slice_reset_contexts = get_rac(c, state);
344 fs->slice_coding_mode = get_symbol(c, state, 0);
345 if (fs->slice_coding_mode != 1) {
346 fs->slice_rct_by_coef = get_symbol(c, state, 0);
347 fs->slice_rct_ry_coef = get_symbol(c, state, 0);
348 if ((uint64_t)fs->slice_rct_by_coef + (uint64_t)fs->slice_rct_ry_coef > 4) {
349 av_log(f->avctx, AV_LOG_ERROR, "slice_rct_y_coef out of range\n");
350 return AVERROR_INVALIDDATA;
351 }
352 }
353 }
354
355 return 0;
356}
357
358static int decode_slice(AVCodecContext *c, void *arg)
359{
360 FFV1Context *fs = *(void **)arg;
361 FFV1Context *f = fs->avctx->priv_data;
362 int width, height, x, y, ret;
363 const int ps = av_pix_fmt_desc_get(c->pix_fmt)->comp[0].step_minus1 + 1;
364 AVFrame * const p = f->cur;
365 int i, si;
366
367 for( si=0; fs != f->slice_context[si]; si ++)
368 ;
369
370 if(f->fsrc && !p->key_frame)
371 ff_thread_await_progress(&f->last_picture, si, 0);
372
373 if(f->fsrc && !p->key_frame) {
374 FFV1Context *fssrc = f->fsrc->slice_context[si];
375 FFV1Context *fsdst = f->slice_context[si];
376 av_assert1(fsdst->plane_count == fssrc->plane_count);
377 av_assert1(fsdst == fs);
378
379 if (!p->key_frame)
380 fsdst->slice_damaged |= fssrc->slice_damaged;
381
382 for (i = 0; i < f->plane_count; i++) {
383 PlaneContext *psrc = &fssrc->plane[i];
384 PlaneContext *pdst = &fsdst->plane[i];
385
386 av_free(pdst->state);
387 av_free(pdst->vlc_state);
388 memcpy(pdst, psrc, sizeof(*pdst));
389 pdst->state = NULL;
390 pdst->vlc_state = NULL;
391
392 if (fssrc->ac) {
393 pdst->state = av_malloc_array(CONTEXT_SIZE, psrc->context_count);
394 memcpy(pdst->state, psrc->state, CONTEXT_SIZE * psrc->context_count);
395 } else {
396 pdst->vlc_state = av_malloc_array(sizeof(*pdst->vlc_state), psrc->context_count);
397 memcpy(pdst->vlc_state, psrc->vlc_state, sizeof(*pdst->vlc_state) * psrc->context_count);
398 }
399 }
400 }
401
402 fs->slice_rct_by_coef = 1;
403 fs->slice_rct_ry_coef = 1;
404
405 if (f->version > 2) {
406 if (ffv1_init_slice_state(f, fs) < 0)
407 return AVERROR(ENOMEM);
408 if (decode_slice_header(f, fs) < 0) {
409 fs->slice_damaged = 1;
410 return AVERROR_INVALIDDATA;
411 }
412 }
413 if ((ret = ffv1_init_slice_state(f, fs)) < 0)
414 return ret;
415 if (f->cur->key_frame || fs->slice_reset_contexts)
416 ffv1_clear_slice_state(f, fs);
417
418 width = fs->slice_width;
419 height = fs->slice_height;
420 x = fs->slice_x;
421 y = fs->slice_y;
422
423 if (!fs->ac) {
424 if (f->version == 3 && f->micro_version > 1 || f->version > 3)
425 get_rac(&fs->c, (uint8_t[]) { 129 });
426 fs->ac_byte_count = f->version > 2 || (!x && !y) ? fs->c.bytestream - fs->c.bytestream_start - 1 : 0;
427 init_get_bits(&fs->gb,
428 fs->c.bytestream_start + fs->ac_byte_count,
429 (fs->c.bytestream_end - fs->c.bytestream_start - fs->ac_byte_count) * 8);
430 }
431
432 av_assert1(width && height);
433 if (f->colorspace == 0) {
434 const int chroma_width = FF_CEIL_RSHIFT(width, f->chroma_h_shift);
435 const int chroma_height = FF_CEIL_RSHIFT(height, f->chroma_v_shift);
436 const int cx = x >> f->chroma_h_shift;
437 const int cy = y >> f->chroma_v_shift;
438 decode_plane(fs, p->data[0] + ps*x + y*p->linesize[0], width, height, p->linesize[0], 0);
439
440 if (f->chroma_planes) {
441 decode_plane(fs, p->data[1] + ps*cx+cy*p->linesize[1], chroma_width, chroma_height, p->linesize[1], 1);
442 decode_plane(fs, p->data[2] + ps*cx+cy*p->linesize[2], chroma_width, chroma_height, p->linesize[2], 1);
443 }
444 if (fs->transparency)
445 decode_plane(fs, p->data[3] + ps*x + y*p->linesize[3], width, height, p->linesize[3], 2);
446 } else {
447 uint8_t *planes[3] = { p->data[0] + ps * x + y * p->linesize[0],
448 p->data[1] + ps * x + y * p->linesize[1],
449 p->data[2] + ps * x + y * p->linesize[2] };
450 decode_rgb_frame(fs, planes, width, height, p->linesize);
451 }
452 if (fs->ac && f->version > 2) {
453 int v;
454 get_rac(&fs->c, (uint8_t[]) { 129 });
455 v = fs->c.bytestream_end - fs->c.bytestream - 2 - 5*f->ec;
456 if (v) {
457 av_log(f->avctx, AV_LOG_ERROR, "bytestream end mismatching by %d\n", v);
458 fs->slice_damaged = 1;
459 }
460 }
461
462 emms_c();
463
464 ff_thread_report_progress(&f->picture, si, 0);
465
466 return 0;
467}
468
469static int read_quant_table(RangeCoder *c, int16_t *quant_table, int scale)
470{
471 int v;
472 int i = 0;
473 uint8_t state[CONTEXT_SIZE];
474
475 memset(state, 128, sizeof(state));
476
477 for (v = 0; i < 128; v++) {
478 unsigned len = get_symbol(c, state, 0) + 1;
479
480 if (len > 128 - i)
481 return AVERROR_INVALIDDATA;
482
483 while (len--) {
484 quant_table[i] = scale * v;
485 i++;
486 }
487 }
488
489 for (i = 1; i < 128; i++)
490 quant_table[256 - i] = -quant_table[i];
491 quant_table[128] = -quant_table[127];
492
493 return 2 * v - 1;
494}
495
496static int read_quant_tables(RangeCoder *c,
497 int16_t quant_table[MAX_CONTEXT_INPUTS][256])
498{
499 int i;
500 int context_count = 1;
501
502 for (i = 0; i < 5; i++) {
503 context_count *= read_quant_table(c, quant_table[i], context_count);
504 if (context_count > 32768U) {
505 return AVERROR_INVALIDDATA;
506 }
507 }
508 return (context_count + 1) / 2;
509}
510
511static int read_extra_header(FFV1Context *f)
512{
513 RangeCoder *const c = &f->c;
514 uint8_t state[CONTEXT_SIZE];
515 int i, j, k, ret;
516 uint8_t state2[32][CONTEXT_SIZE];
517
518 memset(state2, 128, sizeof(state2));
519 memset(state, 128, sizeof(state));
520
521 ff_init_range_decoder(c, f->avctx->extradata, f->avctx->extradata_size);
522 ff_build_rac_states(c, 0.05 * (1LL << 32), 256 - 8);
523
524 f->version = get_symbol(c, state, 0);
525 if (f->version < 2) {
526 av_log(f->avctx, AV_LOG_ERROR, "Invalid version in global header\n");
527 return AVERROR_INVALIDDATA;
528 }
529 if (f->version > 2) {
530 c->bytestream_end -= 4;
531 f->micro_version = get_symbol(c, state, 0);
532 }
533 f->ac = f->avctx->coder_type = get_symbol(c, state, 0);
534 if (f->ac > 1) {
535 for (i = 1; i < 256; i++)
536 f->state_transition[i] = get_symbol(c, state, 1) + c->one_state[i];
537 }
538
539 f->colorspace = get_symbol(c, state, 0); //YUV cs type
540 f->avctx->bits_per_raw_sample = get_symbol(c, state, 0);
541 f->chroma_planes = get_rac(c, state);
542 f->chroma_h_shift = get_symbol(c, state, 0);
543 f->chroma_v_shift = get_symbol(c, state, 0);
544 f->transparency = get_rac(c, state);
545 f->plane_count = 1 + (f->chroma_planes || f->version<4) + f->transparency;
546 f->num_h_slices = 1 + get_symbol(c, state, 0);
547 f->num_v_slices = 1 + get_symbol(c, state, 0);
548
549 if (f->num_h_slices > (unsigned)f->width || !f->num_h_slices ||
550 f->num_v_slices > (unsigned)f->height || !f->num_v_slices
551 ) {
552 av_log(f->avctx, AV_LOG_ERROR, "slice count invalid\n");
553 return AVERROR_INVALIDDATA;
554 }
555
556 f->quant_table_count = get_symbol(c, state, 0);
557 if (f->quant_table_count > (unsigned)MAX_QUANT_TABLES)
558 return AVERROR_INVALIDDATA;
559
560 for (i = 0; i < f->quant_table_count; i++) {
561 f->context_count[i] = read_quant_tables(c, f->quant_tables[i]);
562 if (f->context_count[i] < 0) {
563 av_log(f->avctx, AV_LOG_ERROR, "read_quant_table error\n");
564 return AVERROR_INVALIDDATA;
565 }
566 }
567 if ((ret = ffv1_allocate_initial_states(f)) < 0)
568 return ret;
569
570 for (i = 0; i < f->quant_table_count; i++)
571 if (get_rac(c, state)) {
572 for (j = 0; j < f->context_count[i]; j++)
573 for (k = 0; k < CONTEXT_SIZE; k++) {
574 int pred = j ? f->initial_states[i][j - 1][k] : 128;
575 f->initial_states[i][j][k] =
576 (pred + get_symbol(c, state2[k], 1)) & 0xFF;
577 }
578 }
579
580 if (f->version > 2) {
581 f->ec = get_symbol(c, state, 0);
582 if (f->micro_version > 2)
583 f->intra = get_symbol(c, state, 0);
584 }
585
586 if (f->version > 2) {
587 unsigned v;
588 v = av_crc(av_crc_get_table(AV_CRC_32_IEEE), 0,
589 f->avctx->extradata, f->avctx->extradata_size);
590 if (v) {
591 av_log(f->avctx, AV_LOG_ERROR, "CRC mismatch %X!\n", v);
592 return AVERROR_INVALIDDATA;
593 }
594 }
595
596 if (f->avctx->debug & FF_DEBUG_PICT_INFO)
597 av_log(f->avctx, AV_LOG_DEBUG,
598 "global: ver:%d.%d, coder:%d, colorspace: %d bpr:%d chroma:%d(%d:%d), alpha:%d slices:%dx%d qtabs:%d ec:%d intra:%d\n",
599 f->version, f->micro_version,
600 f->ac,
601 f->colorspace,
602 f->avctx->bits_per_raw_sample,
603 f->chroma_planes, f->chroma_h_shift, f->chroma_v_shift,
604 f->transparency,
605 f->num_h_slices, f->num_v_slices,
606 f->quant_table_count,
607 f->ec,
608 f->intra
609 );
610 return 0;
611}
612
613static int read_header(FFV1Context *f)
614{
615 uint8_t state[CONTEXT_SIZE];
616 int i, j, context_count = -1; //-1 to avoid warning
617 RangeCoder *const c = &f->slice_context[0]->c;
618
619 memset(state, 128, sizeof(state));
620
621 if (f->version < 2) {
622 int chroma_planes, chroma_h_shift, chroma_v_shift, transparency, colorspace, bits_per_raw_sample;
623 unsigned v= get_symbol(c, state, 0);
624 if (v >= 2) {
625 av_log(f->avctx, AV_LOG_ERROR, "invalid version %d in ver01 header\n", v);
626 return AVERROR_INVALIDDATA;
627 }
628 f->version = v;
629 f->ac = f->avctx->coder_type = get_symbol(c, state, 0);
630 if (f->ac > 1) {
631 for (i = 1; i < 256; i++)
632 f->state_transition[i] = get_symbol(c, state, 1) + c->one_state[i];
633 }
634
635 colorspace = get_symbol(c, state, 0); //YUV cs type
636 bits_per_raw_sample = f->version > 0 ? get_symbol(c, state, 0) : f->avctx->bits_per_raw_sample;
637 chroma_planes = get_rac(c, state);
638 chroma_h_shift = get_symbol(c, state, 0);
639 chroma_v_shift = get_symbol(c, state, 0);
640 transparency = get_rac(c, state);
641
642 if (f->plane_count) {
643 if (colorspace != f->colorspace ||
644 bits_per_raw_sample != f->avctx->bits_per_raw_sample ||
645 chroma_planes != f->chroma_planes ||
646 chroma_h_shift != f->chroma_h_shift ||
647 chroma_v_shift != f->chroma_v_shift ||
648 transparency != f->transparency) {
649 av_log(f->avctx, AV_LOG_ERROR, "Invalid change of global parameters\n");
650 return AVERROR_INVALIDDATA;
651 }
652 }
653
654 f->colorspace = colorspace;
655 f->avctx->bits_per_raw_sample = bits_per_raw_sample;
656 f->chroma_planes = chroma_planes;
657 f->chroma_h_shift = chroma_h_shift;
658 f->chroma_v_shift = chroma_v_shift;
659 f->transparency = transparency;
660
661 f->plane_count = 2 + f->transparency;
662 }
663
664 if (f->colorspace == 0) {
665 if (f->avctx->skip_alpha) f->transparency = 0;
666 if (!f->transparency && !f->chroma_planes) {
667 if (f->avctx->bits_per_raw_sample <= 8)
668 f->avctx->pix_fmt = AV_PIX_FMT_GRAY8;
669 else
670 f->avctx->pix_fmt = AV_PIX_FMT_GRAY16;
671 } else if (f->avctx->bits_per_raw_sample<=8 && !f->transparency) {
672 switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
673 case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P; break;
674 case 0x01: f->avctx->pix_fmt = AV_PIX_FMT_YUV440P; break;
675 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P; break;
676 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P; break;
677 case 0x20: f->avctx->pix_fmt = AV_PIX_FMT_YUV411P; break;
678 case 0x22: f->avctx->pix_fmt = AV_PIX_FMT_YUV410P; break;
679 }
680 } else if (f->avctx->bits_per_raw_sample <= 8 && f->transparency) {
681 switch(16*f->chroma_h_shift + f->chroma_v_shift) {
682 case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P; break;
683 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P; break;
684 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P; break;
685 }
686 } else if (f->avctx->bits_per_raw_sample == 9 && !f->transparency) {
687 f->packed_at_lsb = 1;
688 switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
689 case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P9; break;
690 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P9; break;
691 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P9; break;
692 }
693 } else if (f->avctx->bits_per_raw_sample == 9 && f->transparency) {
694 f->packed_at_lsb = 1;
695 switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
696 case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P9; break;
697 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P9; break;
698 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P9; break;
699 }
700 } else if (f->avctx->bits_per_raw_sample == 10 && !f->transparency) {
701 f->packed_at_lsb = 1;
702 switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
703 case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P10; break;
704 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P10; break;
705 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P10; break;
706 }
707 } else if (f->avctx->bits_per_raw_sample == 10 && f->transparency) {
708 f->packed_at_lsb = 1;
709 switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
710 case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P10; break;
711 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P10; break;
712 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P10; break;
713 }
714 } else if (f->avctx->bits_per_raw_sample == 16 && !f->transparency){
715 switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
716 case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P16; break;
717 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P16; break;
718 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P16; break;
719 }
720 } else if (f->avctx->bits_per_raw_sample == 16 && f->transparency){
721 switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
722 case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P16; break;
723 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P16; break;
724 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P16; break;
725 }
726 }
727 } else if (f->colorspace == 1) {
728 if (f->chroma_h_shift || f->chroma_v_shift) {
729 av_log(f->avctx, AV_LOG_ERROR,
730 "chroma subsampling not supported in this colorspace\n");
731 return AVERROR(ENOSYS);
732 }
733 if ( f->avctx->bits_per_raw_sample == 9)
734 f->avctx->pix_fmt = AV_PIX_FMT_GBRP9;
735 else if (f->avctx->bits_per_raw_sample == 10)
736 f->avctx->pix_fmt = AV_PIX_FMT_GBRP10;
737 else if (f->avctx->bits_per_raw_sample == 12)
738 f->avctx->pix_fmt = AV_PIX_FMT_GBRP12;
739 else if (f->avctx->bits_per_raw_sample == 14)
740 f->avctx->pix_fmt = AV_PIX_FMT_GBRP14;
741 else
742 if (f->transparency) f->avctx->pix_fmt = AV_PIX_FMT_RGB32;
743 else f->avctx->pix_fmt = AV_PIX_FMT_0RGB32;
744 } else {
745 av_log(f->avctx, AV_LOG_ERROR, "colorspace not supported\n");
746 return AVERROR(ENOSYS);
747 }
748 if (f->avctx->pix_fmt == AV_PIX_FMT_NONE) {
749 av_log(f->avctx, AV_LOG_ERROR, "format not supported\n");
750 return AVERROR(ENOSYS);
751 }
752
753 av_dlog(f->avctx, "%d %d %d\n",
754 f->chroma_h_shift, f->chroma_v_shift, f->avctx->pix_fmt);
755 if (f->version < 2) {
756 context_count = read_quant_tables(c, f->quant_table);
757 if (context_count < 0) {
758 av_log(f->avctx, AV_LOG_ERROR, "read_quant_table error\n");
759 return AVERROR_INVALIDDATA;
760 }
761 } else if (f->version < 3) {
762 f->slice_count = get_symbol(c, state, 0);
763 } else {
764 const uint8_t *p = c->bytestream_end;
765 for (f->slice_count = 0;
766 f->slice_count < MAX_SLICES && 3 < p - c->bytestream_start;
767 f->slice_count++) {
768 int trailer = 3 + 5*!!f->ec;
769 int size = AV_RB24(p-trailer);
770 if (size + trailer > p - c->bytestream_start)
771 break;
772 p -= size + trailer;
773 }
774 }
775 if (f->slice_count > (unsigned)MAX_SLICES || f->slice_count <= 0) {
776 av_log(f->avctx, AV_LOG_ERROR, "slice count %d is invalid\n", f->slice_count);
777 return AVERROR_INVALIDDATA;
778 }
779
780 for (j = 0; j < f->slice_count; j++) {
781 FFV1Context *fs = f->slice_context[j];
782 fs->ac = f->ac;
783 fs->packed_at_lsb = f->packed_at_lsb;
784
785 fs->slice_damaged = 0;
786
787 if (f->version == 2) {
788 fs->slice_x = get_symbol(c, state, 0) * f->width ;
789 fs->slice_y = get_symbol(c, state, 0) * f->height;
790 fs->slice_width = (get_symbol(c, state, 0) + 1) * f->width + fs->slice_x;
791 fs->slice_height = (get_symbol(c, state, 0) + 1) * f->height + fs->slice_y;
792
793 fs->slice_x /= f->num_h_slices;
794 fs->slice_y /= f->num_v_slices;
795 fs->slice_width = fs->slice_width / f->num_h_slices - fs->slice_x;
796 fs->slice_height = fs->slice_height / f->num_v_slices - fs->slice_y;
797 if ((unsigned)fs->slice_width > f->width ||
798 (unsigned)fs->slice_height > f->height)
799 return AVERROR_INVALIDDATA;
800 if ( (unsigned)fs->slice_x + (uint64_t)fs->slice_width > f->width
801 || (unsigned)fs->slice_y + (uint64_t)fs->slice_height > f->height)
802 return AVERROR_INVALIDDATA;
803 }
804
805 for (i = 0; i < f->plane_count; i++) {
806 PlaneContext *const p = &fs->plane[i];
807
808 if (f->version == 2) {
809 int idx = get_symbol(c, state, 0);
810 if (idx > (unsigned)f->quant_table_count) {
811 av_log(f->avctx, AV_LOG_ERROR,
812 "quant_table_index out of range\n");
813 return AVERROR_INVALIDDATA;
814 }
815 p->quant_table_index = idx;
816 memcpy(p->quant_table, f->quant_tables[idx],
817 sizeof(p->quant_table));
818 context_count = f->context_count[idx];
819 } else {
820 memcpy(p->quant_table, f->quant_table, sizeof(p->quant_table));
821 }
822
823 if (f->version <= 2) {
824 av_assert0(context_count >= 0);
825 if (p->context_count < context_count) {
826 av_freep(&p->state);
827 av_freep(&p->vlc_state);
828 }
829 p->context_count = context_count;
830 }
831 }
832 }
833 return 0;
834}
835
836static av_cold int decode_init(AVCodecContext *avctx)
837{
838 FFV1Context *f = avctx->priv_data;
839 int ret;
840
841 if ((ret = ffv1_common_init(avctx)) < 0)
842 return ret;
843
844 if (avctx->extradata && (ret = read_extra_header(f)) < 0)
845 return ret;
846
847 if ((ret = ffv1_init_slice_contexts(f)) < 0)
848 return ret;
849
850 avctx->internal->allocate_progress = 1;
851
852 return 0;
853}
854
855static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
856{
857 const uint8_t *buf = avpkt->data;
858 int buf_size = avpkt->size;
859 FFV1Context *f = avctx->priv_data;
860 RangeCoder *const c = &f->slice_context[0]->c;
861 int i, ret;
862 uint8_t keystate = 128;
863 const uint8_t *buf_p;
864 AVFrame *p;
865
866 if (f->last_picture.f)
867 ff_thread_release_buffer(avctx, &f->last_picture);
868 FFSWAP(ThreadFrame, f->picture, f->last_picture);
869
870 f->cur = p = f->picture.f;
871
872 if (f->version < 3 && avctx->field_order > AV_FIELD_PROGRESSIVE) {
873 /* we have interlaced material flagged in container */
874 p->interlaced_frame = 1;
875 if (avctx->field_order == AV_FIELD_TT || avctx->field_order == AV_FIELD_TB)
876 p->top_field_first = 1;
877 }
878
879 f->avctx = avctx;
880 ff_init_range_decoder(c, buf, buf_size);
881 ff_build_rac_states(c, 0.05 * (1LL << 32), 256 - 8);
882
883 p->pict_type = AV_PICTURE_TYPE_I; //FIXME I vs. P
884 if (get_rac(c, &keystate)) {
885 p->key_frame = 1;
886 f->key_frame_ok = 0;
887 if ((ret = read_header(f)) < 0)
888 return ret;
889 f->key_frame_ok = 1;
890 } else {
891 if (!f->key_frame_ok) {
892 av_log(avctx, AV_LOG_ERROR,
893 "Cannot decode non-keyframe without valid keyframe\n");
894 return AVERROR_INVALIDDATA;
895 }
896 p->key_frame = 0;
897 }
898
899 if ((ret = ff_thread_get_buffer(avctx, &f->picture, AV_GET_BUFFER_FLAG_REF)) < 0)
900 return ret;
901
902 if (avctx->debug & FF_DEBUG_PICT_INFO)
903 av_log(avctx, AV_LOG_DEBUG, "ver:%d keyframe:%d coder:%d ec:%d slices:%d bps:%d\n",
904 f->version, p->key_frame, f->ac, f->ec, f->slice_count, f->avctx->bits_per_raw_sample);
905
906 ff_thread_finish_setup(avctx);
907
908 buf_p = buf + buf_size;
909 for (i = f->slice_count - 1; i >= 0; i--) {
910 FFV1Context *fs = f->slice_context[i];
911 int trailer = 3 + 5*!!f->ec;
912 int v;
913
914 if (i || f->version > 2) v = AV_RB24(buf_p-trailer) + trailer;
915 else v = buf_p - c->bytestream_start;
916 if (buf_p - c->bytestream_start < v) {
917 av_log(avctx, AV_LOG_ERROR, "Slice pointer chain broken\n");
918 return AVERROR_INVALIDDATA;
919 }
920 buf_p -= v;
921
922 if (f->ec) {
923 unsigned crc = av_crc(av_crc_get_table(AV_CRC_32_IEEE), 0, buf_p, v);
924 if (crc) {
925 int64_t ts = avpkt->pts != AV_NOPTS_VALUE ? avpkt->pts : avpkt->dts;
926 av_log(f->avctx, AV_LOG_ERROR, "CRC mismatch %X!", crc);
927 if (ts != AV_NOPTS_VALUE && avctx->pkt_timebase.num) {
928 av_log(f->avctx, AV_LOG_ERROR, "at %f seconds\n", ts*av_q2d(avctx->pkt_timebase));
929 } else if (ts != AV_NOPTS_VALUE) {
930 av_log(f->avctx, AV_LOG_ERROR, "at %"PRId64"\n", ts);
931 } else {
932 av_log(f->avctx, AV_LOG_ERROR, "\n");
933 }
934 fs->slice_damaged = 1;
935 }
936 }
937
938 if (i) {
939 ff_init_range_decoder(&fs->c, buf_p, v);
940 } else
941 fs->c.bytestream_end = (uint8_t *)(buf_p + v);
942
943 fs->avctx = avctx;
944 fs->cur = p;
945 }
946
947 avctx->execute(avctx,
948 decode_slice,
949 &f->slice_context[0],
950 NULL,
951 f->slice_count,
952 sizeof(void*));
953
954 for (i = f->slice_count - 1; i >= 0; i--) {
955 FFV1Context *fs = f->slice_context[i];
956 int j;
957 if (fs->slice_damaged && f->last_picture.f->data[0]) {
958 const uint8_t *src[4];
959 uint8_t *dst[4];
960 ff_thread_await_progress(&f->last_picture, INT_MAX, 0);
961 for (j = 0; j < 4; j++) {
962 int sh = (j == 1 || j == 2) ? f->chroma_h_shift : 0;
963 int sv = (j == 1 || j == 2) ? f->chroma_v_shift : 0;
964 dst[j] = p->data[j] + p->linesize[j] *
965 (fs->slice_y >> sv) + (fs->slice_x >> sh);
966 src[j] = f->last_picture.f->data[j] + f->last_picture.f->linesize[j] *
967 (fs->slice_y >> sv) + (fs->slice_x >> sh);
968 }
969 av_image_copy(dst, p->linesize, (const uint8_t **)src,
970 f->last_picture.f->linesize,
971 avctx->pix_fmt,
972 fs->slice_width,
973 fs->slice_height);
974 }
975 }
976 ff_thread_report_progress(&f->picture, INT_MAX, 0);
977
978 f->picture_number++;
979
980 if (f->last_picture.f)
981 ff_thread_release_buffer(avctx, &f->last_picture);
982 f->cur = NULL;
983 if ((ret = av_frame_ref(data, f->picture.f)) < 0)
984 return ret;
985
986 *got_frame = 1;
987
988 return buf_size;
989}
990
991static int init_thread_copy(AVCodecContext *avctx)
992{
993 FFV1Context *f = avctx->priv_data;
994 int i, ret;
995
996 f->picture.f = NULL;
997 f->last_picture.f = NULL;
998 f->sample_buffer = NULL;
999 f->slice_count = 0;
1000
1001 for (i = 0; i < f->quant_table_count; i++) {
1002 av_assert0(f->version > 1);
1003 f->initial_states[i] = av_memdup(f->initial_states[i],
1004 f->context_count[i] * sizeof(*f->initial_states[i]));
1005 }
1006
1007 f->picture.f = av_frame_alloc();
1008 f->last_picture.f = av_frame_alloc();
1009
1010 if ((ret = ffv1_init_slice_contexts(f)) < 0)
1011 return ret;
1012
1013 return 0;
1014}
1015
1016static void copy_fields(FFV1Context *fsdst, FFV1Context *fssrc, FFV1Context *fsrc)
1017{
1018 fsdst->version = fsrc->version;
1019 fsdst->micro_version = fsrc->micro_version;
1020 fsdst->chroma_planes = fsrc->chroma_planes;
1021 fsdst->chroma_h_shift = fsrc->chroma_h_shift;
1022 fsdst->chroma_v_shift = fsrc->chroma_v_shift;
1023 fsdst->transparency = fsrc->transparency;
1024 fsdst->plane_count = fsrc->plane_count;
1025 fsdst->ac = fsrc->ac;
1026 fsdst->colorspace = fsrc->colorspace;
1027
1028 fsdst->ec = fsrc->ec;
1029 fsdst->intra = fsrc->intra;
1030 fsdst->slice_damaged = fssrc->slice_damaged;
1031 fsdst->key_frame_ok = fsrc->key_frame_ok;
1032
1033 fsdst->bits_per_raw_sample = fsrc->bits_per_raw_sample;
1034 fsdst->packed_at_lsb = fsrc->packed_at_lsb;
1035 fsdst->slice_count = fsrc->slice_count;
1036 if (fsrc->version<3){
1037 fsdst->slice_x = fssrc->slice_x;
1038 fsdst->slice_y = fssrc->slice_y;
1039 fsdst->slice_width = fssrc->slice_width;
1040 fsdst->slice_height = fssrc->slice_height;
1041 }
1042}
1043
1044static int update_thread_context(AVCodecContext *dst, const AVCodecContext *src)
1045{
1046 FFV1Context *fsrc = src->priv_data;
1047 FFV1Context *fdst = dst->priv_data;
1048 int i, ret;
1049
1050 if (dst == src)
1051 return 0;
1052
1053 {
f6fa7814
DM		 1054 ThreadFrame picture = fdst->picture, last_picture = fdst->last_picture;
1055 uint8_t (*initial_states[MAX_QUANT_TABLES])[32];
1056 struct FFV1Context *slice_context[MAX_SLICES];
1057 memcpy(initial_states, fdst->initial_states, sizeof(fdst->initial_states));
1058 memcpy(slice_context, fdst->slice_context , sizeof(fdst->slice_context));
1059
2ba45a60 1060 memcpy(fdst, fsrc, sizeof(*fdst));
f6fa7814
DM		 1061 memcpy(fdst->initial_states, initial_states, sizeof(fdst->initial_states));
1062 memcpy(fdst->slice_context, slice_context , sizeof(fdst->slice_context));
1063 fdst->picture = picture;
1064 fdst->last_picture = last_picture;
2ba45a60
DM		 1065 for (i = 0; i<fdst->num_h_slices * fdst->num_v_slices; i++) {
1066 FFV1Context *fssrc = fsrc->slice_context[i];
1067 FFV1Context *fsdst = fdst->slice_context[i];
1068 copy_fields(fsdst, fssrc, fsrc);
1069 }
1070 av_assert0(!fdst->plane[0].state);
1071 av_assert0(!fdst->sample_buffer);
1072 }
1073
1074 av_assert1(fdst->slice_count == fsrc->slice_count);
1075
1076
1077 ff_thread_release_buffer(dst, &fdst->picture);
1078 if (fsrc->picture.f->data[0]) {
1079 if ((ret = ff_thread_ref_frame(&fdst->picture, &fsrc->picture)) < 0)
1080 return ret;
1081 }
1082
1083 fdst->fsrc = fsrc;
1084
1085 return 0;
1086}
1087
1088AVCodec ff_ffv1_decoder = {
1089 .name = "ffv1",
1090 .long_name = NULL_IF_CONFIG_SMALL("FFmpeg video codec #1"),
1091 .type = AVMEDIA_TYPE_VIDEO,
1092 .id = AV_CODEC_ID_FFV1,
1093 .priv_data_size = sizeof(FFV1Context),
1094 .init = decode_init,
1095 .close = ffv1_close,
1096 .decode = decode_frame,
1097 .init_thread_copy = ONLY_IF_THREADS_ENABLED(init_thread_copy),
1098 .update_thread_context = ONLY_IF_THREADS_ENABLED(update_thread_context),
1099 .capabilities = CODEC_CAP_DR1 /*| CODEC_CAP_DRAW_HORIZ_BAND*/ |
1100 CODEC_CAP_FRAME_THREADS | CODEC_CAP_SLICE_THREADS,
1101};
ffmpeg Piment Noir Debian package repository