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) decoder
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 inline av_flatten int get_symbol_inline(RangeCoder *c, uint8_t *state,
45 if (get_rac(c, state + 0))
50 while (get_rac(c, state + 1 + FFMIN(e, 9))) { // 1..10
53 return AVERROR_INVALIDDATA;
57 for (i = e - 1; i >= 0; i--)
58 a += a + get_rac(c, state + 22 + FFMIN(i, 9)); // 22..31
60 e = -(is_signed && get_rac(c, state + 11 + FFMIN(e, 10))); // 11..21
65 static av_noinline int get_symbol(RangeCoder *c, uint8_t *state, int is_signed)
67 return get_symbol_inline(c, state, is_signed);
70 static inline int get_vlc_symbol(GetBitContext *gb, VlcState *const state,
77 while (i < state->error_sum) { // FIXME: optimize
82 v = get_sr_golomb(gb, k, 12, bits);
83 ff_dlog(NULL, "v:%d bias:%d error:%d drift:%d count:%d k:%d",
84 v, state->bias, state->error_sum, state->drift, state->count, k);
87 if (k == 0 && 2 * state->drift <= -state->count)
90 v ^= ((2 * state->drift + state->count) >> 31);
93 ret = fold(v + state->bias, bits);
95 update_vlc_state(state, v);
100 static av_always_inline void decode_line(FFV1Context *s, int w,
102 int plane_index, int bits)
104 PlaneContext *const p = &s->plane[plane_index];
105 RangeCoder *const c = &s->c;
109 int run_index = s->run_index;
111 if (s->slice_coding_mode == 1) {
113 for (x = 0; x < w; x++) {
115 for (i=0; i<bits; i++) {
117 v += v + get_rac(c, &state);
124 for (x = 0; x < w; x++) {
125 int diff, context, sign;
127 context = get_context(p, sample[1] + x, sample[0] + x, sample[1] + x);
134 av_assert2(context < p->context_count);
136 if (s->ac != AC_GOLOMB_RICE) {
137 diff = get_symbol_inline(c, p->state[context], 1);
139 if (context == 0 && run_mode == 0)
143 if (run_count == 0 && run_mode == 1) {
144 if (get_bits1(&s->gb)) {
145 run_count = 1 << ff_log2_run[run_index];
146 if (x + run_count <= w)
149 if (ff_log2_run[run_index])
150 run_count = get_bits(&s->gb, ff_log2_run[run_index]);
162 diff = get_vlc_symbol(&s->gb, &p->vlc_state[context],
169 diff = get_vlc_symbol(&s->gb, &p->vlc_state[context], bits);
171 ff_dlog(s->avctx, "count:%d index:%d, mode:%d, x:%d pos:%d\n",
172 run_count, run_index, run_mode, x, get_bits_count(&s->gb));
178 sample[1][x] = av_mod_uintp2(predict(sample[1] + x, sample[0] + x) + diff, bits);
180 s->run_index = run_index;
183 static void decode_plane(FFV1Context *s, uint8_t *src,
184 int w, int h, int stride, int plane_index,
189 sample[0] = s->sample_buffer + 3;
190 sample[1] = s->sample_buffer + w + 6 + 3;
194 memset(s->sample_buffer, 0, 2 * (w + 6) * sizeof(*s->sample_buffer));
196 for (y = 0; y < h; y++) {
197 int16_t *temp = sample[0]; // FIXME: try a normal buffer
199 sample[0] = sample[1];
202 sample[1][-1] = sample[0][0];
203 sample[0][w] = sample[0][w - 1];
206 if (s->avctx->bits_per_raw_sample <= 8) {
207 decode_line(s, w, sample, plane_index, 8);
208 for (x = 0; x < w; x++)
209 src[x*pixel_stride + stride * y] = sample[1][x];
211 decode_line(s, w, sample, plane_index, s->avctx->bits_per_raw_sample);
212 if (s->packed_at_lsb) {
213 for (x = 0; x < w; x++) {
214 ((uint16_t*)(src + stride*y))[x*pixel_stride] = sample[1][x];
217 for (x = 0; x < w; x++) {
218 ((uint16_t*)(src + stride*y))[x*pixel_stride] = sample[1][x] << (16 - s->avctx->bits_per_raw_sample);
222 // STOP_TIMER("decode-line") }
226 static void decode_rgb_frame(FFV1Context *s, uint8_t *src[3], int w, int h, int stride[3])
229 int16_t *sample[4][2];
230 int lbd = s->avctx->bits_per_raw_sample <= 8;
231 int bits = s->avctx->bits_per_raw_sample > 0 ? s->avctx->bits_per_raw_sample : 8;
232 int offset = 1 << bits;
234 for (x = 0; x < 4; x++) {
235 sample[x][0] = s->sample_buffer + x * 2 * (w + 6) + 3;
236 sample[x][1] = s->sample_buffer + (x * 2 + 1) * (w + 6) + 3;
241 memset(s->sample_buffer, 0, 8 * (w + 6) * sizeof(*s->sample_buffer));
243 for (y = 0; y < h; y++) {
244 for (p = 0; p < 3 + s->transparency; p++) {
245 int16_t *temp = sample[p][0]; // FIXME: try a normal buffer
247 sample[p][0] = sample[p][1];
250 sample[p][1][-1]= sample[p][0][0 ];
251 sample[p][0][ w]= sample[p][0][w-1];
252 if (lbd && s->slice_coding_mode == 0)
253 decode_line(s, w, sample[p], (p + 1)/2, 9);
255 decode_line(s, w, sample[p], (p + 1)/2, bits + (s->slice_coding_mode != 1));
257 for (x = 0; x < w; x++) {
258 int g = sample[0][1][x];
259 int b = sample[1][1][x];
260 int r = sample[2][1][x];
261 int a = sample[3][1][x];
263 if (s->slice_coding_mode != 1) {
266 g -= (b * s->slice_rct_by_coef + r * s->slice_rct_ry_coef) >> 2;
272 *((uint32_t*)(src[0] + x*4 + stride[0]*y)) = b + (g<<8) + (r<<16) + (a<<24);
274 *((uint16_t*)(src[0] + x*2 + stride[0]*y)) = b;
275 *((uint16_t*)(src[1] + x*2 + stride[1]*y)) = g;
276 *((uint16_t*)(src[2] + x*2 + stride[2]*y)) = r;
282 static int decode_slice_header(FFV1Context *f, FFV1Context *fs)
284 RangeCoder *c = &fs->c;
285 uint8_t state[CONTEXT_SIZE];
286 unsigned ps, i, context_count;
287 memset(state, 128, sizeof(state));
289 av_assert0(f->version > 2);
291 fs->slice_x = get_symbol(c, state, 0) * f->width ;
292 fs->slice_y = get_symbol(c, state, 0) * f->height;
293 fs->slice_width = (get_symbol(c, state, 0) + 1) * f->width + fs->slice_x;
294 fs->slice_height = (get_symbol(c, state, 0) + 1) * f->height + fs->slice_y;
296 fs->slice_x /= f->num_h_slices;
297 fs->slice_y /= f->num_v_slices;
298 fs->slice_width = fs->slice_width /f->num_h_slices - fs->slice_x;
299 fs->slice_height = fs->slice_height/f->num_v_slices - fs->slice_y;
300 if ((unsigned)fs->slice_width > f->width || (unsigned)fs->slice_height > f->height)
302 if ( (unsigned)fs->slice_x + (uint64_t)fs->slice_width > f->width
303 || (unsigned)fs->slice_y + (uint64_t)fs->slice_height > f->height)
306 for (i = 0; i < f->plane_count; i++) {
307 PlaneContext * const p = &fs->plane[i];
308 int idx = get_symbol(c, state, 0);
309 if (idx >= (unsigned)f->quant_table_count) {
310 av_log(f->avctx, AV_LOG_ERROR, "quant_table_index out of range\n");
313 p->quant_table_index = idx;
314 memcpy(p->quant_table, f->quant_tables[idx], sizeof(p->quant_table));
315 context_count = f->context_count[idx];
317 if (p->context_count < context_count) {
319 av_freep(&p->vlc_state);
321 p->context_count = context_count;
324 ps = get_symbol(c, state, 0);
326 f->cur->interlaced_frame = 1;
327 f->cur->top_field_first = 1;
328 } else if (ps == 2) {
329 f->cur->interlaced_frame = 1;
330 f->cur->top_field_first = 0;
331 } else if (ps == 3) {
332 f->cur->interlaced_frame = 0;
334 f->cur->sample_aspect_ratio.num = get_symbol(c, state, 0);
335 f->cur->sample_aspect_ratio.den = get_symbol(c, state, 0);
337 if (av_image_check_sar(f->width, f->height,
338 f->cur->sample_aspect_ratio) < 0) {
339 av_log(f->avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
340 f->cur->sample_aspect_ratio.num,
341 f->cur->sample_aspect_ratio.den);
342 f->cur->sample_aspect_ratio = (AVRational){ 0, 1 };
345 if (fs->version > 3) {
346 fs->slice_reset_contexts = get_rac(c, state);
347 fs->slice_coding_mode = get_symbol(c, state, 0);
348 if (fs->slice_coding_mode != 1) {
349 fs->slice_rct_by_coef = get_symbol(c, state, 0);
350 fs->slice_rct_ry_coef = get_symbol(c, state, 0);
351 if ((uint64_t)fs->slice_rct_by_coef + (uint64_t)fs->slice_rct_ry_coef > 4) {
352 av_log(f->avctx, AV_LOG_ERROR, "slice_rct_y_coef out of range\n");
353 return AVERROR_INVALIDDATA;
361 static int decode_slice(AVCodecContext *c, void *arg)
363 FFV1Context *fs = *(void **)arg;
364 FFV1Context *f = fs->avctx->priv_data;
365 int width, height, x, y, ret;
366 const int ps = av_pix_fmt_desc_get(c->pix_fmt)->comp[0].step;
367 AVFrame * const p = f->cur;
370 for( si=0; fs != f->slice_context[si]; si ++)
373 if(f->fsrc && !p->key_frame)
374 ff_thread_await_progress(&f->last_picture, si, 0);
376 if(f->fsrc && !p->key_frame) {
377 FFV1Context *fssrc = f->fsrc->slice_context[si];
378 FFV1Context *fsdst = f->slice_context[si];
379 av_assert1(fsdst->plane_count == fssrc->plane_count);
380 av_assert1(fsdst == fs);
383 fsdst->slice_damaged |= fssrc->slice_damaged;
385 for (i = 0; i < f->plane_count; i++) {
386 PlaneContext *psrc = &fssrc->plane[i];
387 PlaneContext *pdst = &fsdst->plane[i];
389 av_free(pdst->state);
390 av_free(pdst->vlc_state);
391 memcpy(pdst, psrc, sizeof(*pdst));
393 pdst->vlc_state = NULL;
396 pdst->state = av_malloc_array(CONTEXT_SIZE, psrc->context_count);
397 memcpy(pdst->state, psrc->state, CONTEXT_SIZE * psrc->context_count);
399 pdst->vlc_state = av_malloc_array(sizeof(*pdst->vlc_state), psrc->context_count);
400 memcpy(pdst->vlc_state, psrc->vlc_state, sizeof(*pdst->vlc_state) * psrc->context_count);
405 fs->slice_rct_by_coef = 1;
406 fs->slice_rct_ry_coef = 1;
408 if (f->version > 2) {
409 if (ff_ffv1_init_slice_state(f, fs) < 0)
410 return AVERROR(ENOMEM);
411 if (decode_slice_header(f, fs) < 0) {
412 fs->slice_x = fs->slice_y = fs->slice_height = fs->slice_width = 0;
413 fs->slice_damaged = 1;
414 return AVERROR_INVALIDDATA;
417 if ((ret = ff_ffv1_init_slice_state(f, fs)) < 0)
419 if (f->cur->key_frame || fs->slice_reset_contexts)
420 ff_ffv1_clear_slice_state(f, fs);
422 width = fs->slice_width;
423 height = fs->slice_height;
427 if (fs->ac == AC_GOLOMB_RICE) {
428 if (f->version == 3 && f->micro_version > 1 || f->version > 3)
429 get_rac(&fs->c, (uint8_t[]) { 129 });
430 fs->ac_byte_count = f->version > 2 || (!x && !y) ? fs->c.bytestream - fs->c.bytestream_start - 1 : 0;
431 init_get_bits(&fs->gb,
432 fs->c.bytestream_start + fs->ac_byte_count,
433 (fs->c.bytestream_end - fs->c.bytestream_start - fs->ac_byte_count) * 8);
436 av_assert1(width && height);
437 if (f->colorspace == 0 && (f->chroma_planes || !fs->transparency)) {
438 const int chroma_width = AV_CEIL_RSHIFT(width, f->chroma_h_shift);
439 const int chroma_height = AV_CEIL_RSHIFT(height, f->chroma_v_shift);
440 const int cx = x >> f->chroma_h_shift;
441 const int cy = y >> f->chroma_v_shift;
442 decode_plane(fs, p->data[0] + ps*x + y*p->linesize[0], width, height, p->linesize[0], 0, 1);
444 if (f->chroma_planes) {
445 decode_plane(fs, p->data[1] + ps*cx+cy*p->linesize[1], chroma_width, chroma_height, p->linesize[1], 1, 1);
446 decode_plane(fs, p->data[2] + ps*cx+cy*p->linesize[2], chroma_width, chroma_height, p->linesize[2], 1, 1);
448 if (fs->transparency)
449 decode_plane(fs, p->data[3] + ps*x + y*p->linesize[3], width, height, p->linesize[3], (f->version >= 4 && !f->chroma_planes) ? 1 : 2, 1);
450 } else if (f->colorspace == 0) {
451 decode_plane(fs, p->data[0] + ps*x + y*p->linesize[0] , width, height, p->linesize[0], 0, 2);
452 decode_plane(fs, p->data[0] + ps*x + y*p->linesize[0] + 1, width, height, p->linesize[0], 1, 2);
454 uint8_t *planes[3] = { p->data[0] + ps * x + y * p->linesize[0],
455 p->data[1] + ps * x + y * p->linesize[1],
456 p->data[2] + ps * x + y * p->linesize[2] };
457 decode_rgb_frame(fs, planes, width, height, p->linesize);
459 if (fs->ac != AC_GOLOMB_RICE && f->version > 2) {
461 get_rac(&fs->c, (uint8_t[]) { 129 });
462 v = fs->c.bytestream_end - fs->c.bytestream - 2 - 5*f->ec;
464 av_log(f->avctx, AV_LOG_ERROR, "bytestream end mismatching by %d\n", v);
465 fs->slice_damaged = 1;
471 ff_thread_report_progress(&f->picture, si, 0);
476 static int read_quant_table(RangeCoder *c, int16_t *quant_table, int scale)
480 uint8_t state[CONTEXT_SIZE];
482 memset(state, 128, sizeof(state));
484 for (v = 0; i < 128; v++) {
485 unsigned len = get_symbol(c, state, 0) + 1;
487 if (len > 128 - i || !len)
488 return AVERROR_INVALIDDATA;
491 quant_table[i] = scale * v;
496 for (i = 1; i < 128; i++)
497 quant_table[256 - i] = -quant_table[i];
498 quant_table[128] = -quant_table[127];
503 static int read_quant_tables(RangeCoder *c,
504 int16_t quant_table[MAX_CONTEXT_INPUTS][256])
507 int context_count = 1;
509 for (i = 0; i < 5; i++) {
510 int ret = read_quant_table(c, quant_table[i], context_count);
513 context_count *= ret;
514 if (context_count > 32768U) {
515 return AVERROR_INVALIDDATA;
518 return (context_count + 1) / 2;
521 static int read_extra_header(FFV1Context *f)
523 RangeCoder *const c = &f->c;
524 uint8_t state[CONTEXT_SIZE];
526 uint8_t state2[32][CONTEXT_SIZE];
529 memset(state2, 128, sizeof(state2));
530 memset(state, 128, sizeof(state));
532 ff_init_range_decoder(c, f->avctx->extradata, f->avctx->extradata_size);
533 ff_build_rac_states(c, 0.05 * (1LL << 32), 256 - 8);
535 f->version = get_symbol(c, state, 0);
536 if (f->version < 2) {
537 av_log(f->avctx, AV_LOG_ERROR, "Invalid version in global header\n");
538 return AVERROR_INVALIDDATA;
540 if (f->version > 2) {
541 c->bytestream_end -= 4;
542 f->micro_version = get_symbol(c, state, 0);
543 if (f->micro_version < 0)
544 return AVERROR_INVALIDDATA;
546 f->ac = get_symbol(c, state, 0);
548 if (f->ac == AC_RANGE_CUSTOM_TAB) {
549 for (i = 1; i < 256; i++)
550 f->state_transition[i] = get_symbol(c, state, 1) + c->one_state[i];
553 f->colorspace = get_symbol(c, state, 0); //YUV cs type
554 f->avctx->bits_per_raw_sample = get_symbol(c, state, 0);
555 f->chroma_planes = get_rac(c, state);
556 f->chroma_h_shift = get_symbol(c, state, 0);
557 f->chroma_v_shift = get_symbol(c, state, 0);
558 f->transparency = get_rac(c, state);
559 f->plane_count = 1 + (f->chroma_planes || f->version<4) + f->transparency;
560 f->num_h_slices = 1 + get_symbol(c, state, 0);
561 f->num_v_slices = 1 + get_symbol(c, state, 0);
563 if (f->chroma_h_shift > 4U || f->chroma_v_shift > 4U) {
564 av_log(f->avctx, AV_LOG_ERROR, "chroma shift parameters %d %d are invalid\n",
565 f->chroma_h_shift, f->chroma_v_shift);
566 return AVERROR_INVALIDDATA;
569 if (f->num_h_slices > (unsigned)f->width || !f->num_h_slices ||
570 f->num_v_slices > (unsigned)f->height || !f->num_v_slices
572 av_log(f->avctx, AV_LOG_ERROR, "slice count invalid\n");
573 return AVERROR_INVALIDDATA;
576 f->quant_table_count = get_symbol(c, state, 0);
577 if (f->quant_table_count > (unsigned)MAX_QUANT_TABLES || !f->quant_table_count) {
578 av_log(f->avctx, AV_LOG_ERROR, "quant table count %d is invalid\n", f->quant_table_count);
579 f->quant_table_count = 0;
580 return AVERROR_INVALIDDATA;
583 for (i = 0; i < f->quant_table_count; i++) {
584 f->context_count[i] = read_quant_tables(c, f->quant_tables[i]);
585 if (f->context_count[i] < 0) {
586 av_log(f->avctx, AV_LOG_ERROR, "read_quant_table error\n");
587 return AVERROR_INVALIDDATA;
590 if ((ret = ff_ffv1_allocate_initial_states(f)) < 0)
593 for (i = 0; i < f->quant_table_count; i++)
594 if (get_rac(c, state)) {
595 for (j = 0; j < f->context_count[i]; j++)
596 for (k = 0; k < CONTEXT_SIZE; k++) {
597 int pred = j ? f->initial_states[i][j - 1][k] : 128;
598 f->initial_states[i][j][k] =
599 (pred + get_symbol(c, state2[k], 1)) & 0xFF;
603 if (f->version > 2) {
604 f->ec = get_symbol(c, state, 0);
605 if (f->micro_version > 2)
606 f->intra = get_symbol(c, state, 0);
609 if (f->version > 2) {
611 v = av_crc(av_crc_get_table(AV_CRC_32_IEEE), 0,
612 f->avctx->extradata, f->avctx->extradata_size);
613 if (v || f->avctx->extradata_size < 4) {
614 av_log(f->avctx, AV_LOG_ERROR, "CRC mismatch %X!\n", v);
615 return AVERROR_INVALIDDATA;
617 crc = AV_RB32(f->avctx->extradata + f->avctx->extradata_size - 4);
620 if (f->avctx->debug & FF_DEBUG_PICT_INFO)
621 av_log(f->avctx, AV_LOG_DEBUG,
622 "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 CRC:0x%08X\n",
623 f->version, f->micro_version,
626 f->avctx->bits_per_raw_sample,
627 f->chroma_planes, f->chroma_h_shift, f->chroma_v_shift,
629 f->num_h_slices, f->num_v_slices,
630 f->quant_table_count,
638 static int read_header(FFV1Context *f)
640 uint8_t state[CONTEXT_SIZE];
641 int i, j, context_count = -1; //-1 to avoid warning
642 RangeCoder *const c = &f->slice_context[0]->c;
644 memset(state, 128, sizeof(state));
646 if (f->version < 2) {
647 int chroma_planes, chroma_h_shift, chroma_v_shift, transparency, colorspace, bits_per_raw_sample;
648 unsigned v= get_symbol(c, state, 0);
650 av_log(f->avctx, AV_LOG_ERROR, "invalid version %d in ver01 header\n", v);
651 return AVERROR_INVALIDDATA;
654 f->ac = get_symbol(c, state, 0);
656 if (f->ac == AC_RANGE_CUSTOM_TAB) {
657 for (i = 1; i < 256; i++)
658 f->state_transition[i] = get_symbol(c, state, 1) + c->one_state[i];
661 colorspace = get_symbol(c, state, 0); //YUV cs type
662 bits_per_raw_sample = f->version > 0 ? get_symbol(c, state, 0) : f->avctx->bits_per_raw_sample;
663 chroma_planes = get_rac(c, state);
664 chroma_h_shift = get_symbol(c, state, 0);
665 chroma_v_shift = get_symbol(c, state, 0);
666 transparency = get_rac(c, state);
667 if (colorspace == 0 && f->avctx->skip_alpha)
670 if (f->plane_count) {
671 if (colorspace != f->colorspace ||
672 bits_per_raw_sample != f->avctx->bits_per_raw_sample ||
673 chroma_planes != f->chroma_planes ||
674 chroma_h_shift != f->chroma_h_shift ||
675 chroma_v_shift != f->chroma_v_shift ||
676 transparency != f->transparency) {
677 av_log(f->avctx, AV_LOG_ERROR, "Invalid change of global parameters\n");
678 return AVERROR_INVALIDDATA;
682 if (chroma_h_shift > 4U || chroma_v_shift > 4U) {
683 av_log(f->avctx, AV_LOG_ERROR, "chroma shift parameters %d %d are invalid\n",
684 chroma_h_shift, chroma_v_shift);
685 return AVERROR_INVALIDDATA;
688 f->colorspace = colorspace;
689 f->avctx->bits_per_raw_sample = bits_per_raw_sample;
690 f->chroma_planes = chroma_planes;
691 f->chroma_h_shift = chroma_h_shift;
692 f->chroma_v_shift = chroma_v_shift;
693 f->transparency = transparency;
695 f->plane_count = 2 + f->transparency;
698 if (f->colorspace == 0) {
699 if (!f->transparency && !f->chroma_planes) {
700 if (f->avctx->bits_per_raw_sample <= 8)
701 f->avctx->pix_fmt = AV_PIX_FMT_GRAY8;
703 f->avctx->pix_fmt = AV_PIX_FMT_GRAY16;
704 } else if (f->transparency && !f->chroma_planes) {
705 if (f->avctx->bits_per_raw_sample <= 8)
706 f->avctx->pix_fmt = AV_PIX_FMT_YA8;
708 return AVERROR(ENOSYS);
709 } else if (f->avctx->bits_per_raw_sample<=8 && !f->transparency) {
710 switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
711 case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P; break;
712 case 0x01: f->avctx->pix_fmt = AV_PIX_FMT_YUV440P; break;
713 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P; break;
714 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P; break;
715 case 0x20: f->avctx->pix_fmt = AV_PIX_FMT_YUV411P; break;
716 case 0x22: f->avctx->pix_fmt = AV_PIX_FMT_YUV410P; break;
718 } else if (f->avctx->bits_per_raw_sample <= 8 && f->transparency) {
719 switch(16*f->chroma_h_shift + f->chroma_v_shift) {
720 case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P; break;
721 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P; break;
722 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P; break;
724 } else if (f->avctx->bits_per_raw_sample == 9 && !f->transparency) {
725 f->packed_at_lsb = 1;
726 switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
727 case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P9; break;
728 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P9; break;
729 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P9; break;
731 } else if (f->avctx->bits_per_raw_sample == 9 && f->transparency) {
732 f->packed_at_lsb = 1;
733 switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
734 case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P9; break;
735 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P9; break;
736 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P9; break;
738 } else if (f->avctx->bits_per_raw_sample == 10 && !f->transparency) {
739 f->packed_at_lsb = 1;
740 switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
741 case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P10; break;
742 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P10; break;
743 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P10; break;
745 } else if (f->avctx->bits_per_raw_sample == 10 && f->transparency) {
746 f->packed_at_lsb = 1;
747 switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
748 case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P10; break;
749 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P10; break;
750 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P10; break;
752 } else if (f->avctx->bits_per_raw_sample == 16 && !f->transparency){
753 switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
754 case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P16; break;
755 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P16; break;
756 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P16; break;
758 } else if (f->avctx->bits_per_raw_sample == 16 && f->transparency){
759 switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
760 case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P16; break;
761 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P16; break;
762 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P16; break;
765 } else if (f->colorspace == 1) {
766 if (f->chroma_h_shift || f->chroma_v_shift) {
767 av_log(f->avctx, AV_LOG_ERROR,
768 "chroma subsampling not supported in this colorspace\n");
769 return AVERROR(ENOSYS);
771 if ( f->avctx->bits_per_raw_sample == 9)
772 f->avctx->pix_fmt = AV_PIX_FMT_GBRP9;
773 else if (f->avctx->bits_per_raw_sample == 10)
774 f->avctx->pix_fmt = AV_PIX_FMT_GBRP10;
775 else if (f->avctx->bits_per_raw_sample == 12)
776 f->avctx->pix_fmt = AV_PIX_FMT_GBRP12;
777 else if (f->avctx->bits_per_raw_sample == 14)
778 f->avctx->pix_fmt = AV_PIX_FMT_GBRP14;
780 if (f->transparency) f->avctx->pix_fmt = AV_PIX_FMT_RGB32;
781 else f->avctx->pix_fmt = AV_PIX_FMT_0RGB32;
783 av_log(f->avctx, AV_LOG_ERROR, "colorspace not supported\n");
784 return AVERROR(ENOSYS);
786 if (f->avctx->pix_fmt == AV_PIX_FMT_NONE) {
787 av_log(f->avctx, AV_LOG_ERROR, "format not supported\n");
788 return AVERROR(ENOSYS);
791 ff_dlog(f->avctx, "%d %d %d\n",
792 f->chroma_h_shift, f->chroma_v_shift, f->avctx->pix_fmt);
793 if (f->version < 2) {
794 context_count = read_quant_tables(c, f->quant_table);
795 if (context_count < 0) {
796 av_log(f->avctx, AV_LOG_ERROR, "read_quant_table error\n");
797 return AVERROR_INVALIDDATA;
799 f->slice_count = f->max_slice_count;
800 } else if (f->version < 3) {
801 f->slice_count = get_symbol(c, state, 0);
803 const uint8_t *p = c->bytestream_end;
804 for (f->slice_count = 0;
805 f->slice_count < MAX_SLICES && 3 < p - c->bytestream_start;
807 int trailer = 3 + 5*!!f->ec;
808 int size = AV_RB24(p-trailer);
809 if (size + trailer > p - c->bytestream_start)
814 if (f->slice_count > (unsigned)MAX_SLICES || f->slice_count <= 0 || f->slice_count > f->max_slice_count) {
815 av_log(f->avctx, AV_LOG_ERROR, "slice count %d is invalid (max=%d)\n", f->slice_count, f->max_slice_count);
816 return AVERROR_INVALIDDATA;
819 for (j = 0; j < f->slice_count; j++) {
820 FFV1Context *fs = f->slice_context[j];
822 fs->packed_at_lsb = f->packed_at_lsb;
824 fs->slice_damaged = 0;
826 if (f->version == 2) {
827 fs->slice_x = get_symbol(c, state, 0) * f->width ;
828 fs->slice_y = get_symbol(c, state, 0) * f->height;
829 fs->slice_width = (get_symbol(c, state, 0) + 1) * f->width + fs->slice_x;
830 fs->slice_height = (get_symbol(c, state, 0) + 1) * f->height + fs->slice_y;
832 fs->slice_x /= f->num_h_slices;
833 fs->slice_y /= f->num_v_slices;
834 fs->slice_width = fs->slice_width / f->num_h_slices - fs->slice_x;
835 fs->slice_height = fs->slice_height / f->num_v_slices - fs->slice_y;
836 if ((unsigned)fs->slice_width > f->width ||
837 (unsigned)fs->slice_height > f->height)
838 return AVERROR_INVALIDDATA;
839 if ( (unsigned)fs->slice_x + (uint64_t)fs->slice_width > f->width
840 || (unsigned)fs->slice_y + (uint64_t)fs->slice_height > f->height)
841 return AVERROR_INVALIDDATA;
844 for (i = 0; i < f->plane_count; i++) {
845 PlaneContext *const p = &fs->plane[i];
847 if (f->version == 2) {
848 int idx = get_symbol(c, state, 0);
849 if (idx > (unsigned)f->quant_table_count) {
850 av_log(f->avctx, AV_LOG_ERROR,
851 "quant_table_index out of range\n");
852 return AVERROR_INVALIDDATA;
854 p->quant_table_index = idx;
855 memcpy(p->quant_table, f->quant_tables[idx],
856 sizeof(p->quant_table));
857 context_count = f->context_count[idx];
859 memcpy(p->quant_table, f->quant_table, sizeof(p->quant_table));
862 if (f->version <= 2) {
863 av_assert0(context_count >= 0);
864 if (p->context_count < context_count) {
866 av_freep(&p->vlc_state);
868 p->context_count = context_count;
875 static av_cold int decode_init(AVCodecContext *avctx)
877 FFV1Context *f = avctx->priv_data;
880 if ((ret = ff_ffv1_common_init(avctx)) < 0)
883 if (avctx->extradata && (ret = read_extra_header(f)) < 0)
886 if ((ret = ff_ffv1_init_slice_contexts(f)) < 0)
889 avctx->internal->allocate_progress = 1;
894 static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
896 uint8_t *buf = avpkt->data;
897 int buf_size = avpkt->size;
898 FFV1Context *f = avctx->priv_data;
899 RangeCoder *const c = &f->slice_context[0]->c;
901 uint8_t keystate = 128;
905 if (f->last_picture.f)
906 ff_thread_release_buffer(avctx, &f->last_picture);
907 FFSWAP(ThreadFrame, f->picture, f->last_picture);
909 f->cur = p = f->picture.f;
911 if (f->version < 3 && avctx->field_order > AV_FIELD_PROGRESSIVE) {
912 /* we have interlaced material flagged in container */
913 p->interlaced_frame = 1;
914 if (avctx->field_order == AV_FIELD_TT || avctx->field_order == AV_FIELD_TB)
915 p->top_field_first = 1;
919 ff_init_range_decoder(c, buf, buf_size);
920 ff_build_rac_states(c, 0.05 * (1LL << 32), 256 - 8);
922 p->pict_type = AV_PICTURE_TYPE_I; //FIXME I vs. P
923 if (get_rac(c, &keystate)) {
926 if ((ret = read_header(f)) < 0)
930 if (!f->key_frame_ok) {
931 av_log(avctx, AV_LOG_ERROR,
932 "Cannot decode non-keyframe without valid keyframe\n");
933 return AVERROR_INVALIDDATA;
938 if ((ret = ff_thread_get_buffer(avctx, &f->picture, AV_GET_BUFFER_FLAG_REF)) < 0)
941 if (avctx->debug & FF_DEBUG_PICT_INFO)
942 av_log(avctx, AV_LOG_DEBUG, "ver:%d keyframe:%d coder:%d ec:%d slices:%d bps:%d\n",
943 f->version, p->key_frame, f->ac, f->ec, f->slice_count, f->avctx->bits_per_raw_sample);
945 ff_thread_finish_setup(avctx);
947 buf_p = buf + buf_size;
948 for (i = f->slice_count - 1; i >= 0; i--) {
949 FFV1Context *fs = f->slice_context[i];
950 int trailer = 3 + 5*!!f->ec;
953 if (i || f->version > 2) v = AV_RB24(buf_p-trailer) + trailer;
954 else v = buf_p - c->bytestream_start;
955 if (buf_p - c->bytestream_start < v) {
956 av_log(avctx, AV_LOG_ERROR, "Slice pointer chain broken\n");
957 ff_thread_report_progress(&f->picture, INT_MAX, 0);
958 return AVERROR_INVALIDDATA;
963 unsigned crc = av_crc(av_crc_get_table(AV_CRC_32_IEEE), 0, buf_p, v);
965 int64_t ts = avpkt->pts != AV_NOPTS_VALUE ? avpkt->pts : avpkt->dts;
966 av_log(f->avctx, AV_LOG_ERROR, "CRC mismatch %X!", crc);
967 if (ts != AV_NOPTS_VALUE && avctx->pkt_timebase.num) {
968 av_log(f->avctx, AV_LOG_ERROR, "at %f seconds\n", ts*av_q2d(avctx->pkt_timebase));
969 } else if (ts != AV_NOPTS_VALUE) {
970 av_log(f->avctx, AV_LOG_ERROR, "at %"PRId64"\n", ts);
972 av_log(f->avctx, AV_LOG_ERROR, "\n");
974 fs->slice_damaged = 1;
976 if (avctx->debug & FF_DEBUG_PICT_INFO) {
977 av_log(avctx, AV_LOG_DEBUG, "slice %d, CRC: 0x%08X\n", i, AV_RB32(buf_p + v - 4));
982 ff_init_range_decoder(&fs->c, buf_p, v);
984 fs->c.bytestream_end = buf_p + v;
990 avctx->execute(avctx,
992 &f->slice_context[0],
997 for (i = f->slice_count - 1; i >= 0; i--) {
998 FFV1Context *fs = f->slice_context[i];
1000 if (fs->slice_damaged && f->last_picture.f->data[0]) {
1001 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt);
1002 const uint8_t *src[4];
1004 ff_thread_await_progress(&f->last_picture, INT_MAX, 0);
1005 for (j = 0; j < 4; j++) {
1006 int pixshift = desc->comp[j].depth > 8;
1007 int sh = (j == 1 || j == 2) ? f->chroma_h_shift : 0;
1008 int sv = (j == 1 || j == 2) ? f->chroma_v_shift : 0;
1009 dst[j] = p->data[j] + p->linesize[j] *
1010 (fs->slice_y >> sv) + ((fs->slice_x >> sh) << pixshift);
1011 src[j] = f->last_picture.f->data[j] + f->last_picture.f->linesize[j] *
1012 (fs->slice_y >> sv) + ((fs->slice_x >> sh) << pixshift);
1014 av_image_copy(dst, p->linesize, src,
1015 f->last_picture.f->linesize,
1021 ff_thread_report_progress(&f->picture, INT_MAX, 0);
1023 f->picture_number++;
1025 if (f->last_picture.f)
1026 ff_thread_release_buffer(avctx, &f->last_picture);
1028 if ((ret = av_frame_ref(data, f->picture.f)) < 0)
1037 static int init_thread_copy(AVCodecContext *avctx)
1039 FFV1Context *f = avctx->priv_data;
1042 f->picture.f = NULL;
1043 f->last_picture.f = NULL;
1044 f->sample_buffer = NULL;
1045 f->max_slice_count = 0;
1048 for (i = 0; i < f->quant_table_count; i++) {
1049 av_assert0(f->version > 1);
1050 f->initial_states[i] = av_memdup(f->initial_states[i],
1051 f->context_count[i] * sizeof(*f->initial_states[i]));
1054 f->picture.f = av_frame_alloc();
1055 f->last_picture.f = av_frame_alloc();
1057 if ((ret = ff_ffv1_init_slice_contexts(f)) < 0)
1064 static void copy_fields(FFV1Context *fsdst, FFV1Context *fssrc, FFV1Context *fsrc)
1066 fsdst->version = fsrc->version;
1067 fsdst->micro_version = fsrc->micro_version;
1068 fsdst->chroma_planes = fsrc->chroma_planes;
1069 fsdst->chroma_h_shift = fsrc->chroma_h_shift;
1070 fsdst->chroma_v_shift = fsrc->chroma_v_shift;
1071 fsdst->transparency = fsrc->transparency;
1072 fsdst->plane_count = fsrc->plane_count;
1073 fsdst->ac = fsrc->ac;
1074 fsdst->colorspace = fsrc->colorspace;
1076 fsdst->ec = fsrc->ec;
1077 fsdst->intra = fsrc->intra;
1078 fsdst->slice_damaged = fssrc->slice_damaged;
1079 fsdst->key_frame_ok = fsrc->key_frame_ok;
1081 fsdst->bits_per_raw_sample = fsrc->bits_per_raw_sample;
1082 fsdst->packed_at_lsb = fsrc->packed_at_lsb;
1083 fsdst->slice_count = fsrc->slice_count;
1084 if (fsrc->version<3){
1085 fsdst->slice_x = fssrc->slice_x;
1086 fsdst->slice_y = fssrc->slice_y;
1087 fsdst->slice_width = fssrc->slice_width;
1088 fsdst->slice_height = fssrc->slice_height;
1093 static int update_thread_context(AVCodecContext *dst, const AVCodecContext *src)
1095 FFV1Context *fsrc = src->priv_data;
1096 FFV1Context *fdst = dst->priv_data;
1103 ThreadFrame picture = fdst->picture, last_picture = fdst->last_picture;
1104 uint8_t (*initial_states[MAX_QUANT_TABLES])[32];
1105 struct FFV1Context *slice_context[MAX_SLICES];
1106 memcpy(initial_states, fdst->initial_states, sizeof(fdst->initial_states));
1107 memcpy(slice_context, fdst->slice_context , sizeof(fdst->slice_context));
1109 memcpy(fdst, fsrc, sizeof(*fdst));
1110 memcpy(fdst->initial_states, initial_states, sizeof(fdst->initial_states));
1111 memcpy(fdst->slice_context, slice_context , sizeof(fdst->slice_context));
1112 fdst->picture = picture;
1113 fdst->last_picture = last_picture;
1114 for (i = 0; i<fdst->num_h_slices * fdst->num_v_slices; i++) {
1115 FFV1Context *fssrc = fsrc->slice_context[i];
1116 FFV1Context *fsdst = fdst->slice_context[i];
1117 copy_fields(fsdst, fssrc, fsrc);
1119 av_assert0(!fdst->plane[0].state);
1120 av_assert0(!fdst->sample_buffer);
1123 av_assert1(fdst->max_slice_count == fsrc->max_slice_count);
1126 ff_thread_release_buffer(dst, &fdst->picture);
1127 if (fsrc->picture.f->data[0]) {
1128 if ((ret = ff_thread_ref_frame(&fdst->picture, &fsrc->picture)) < 0)
1138 AVCodec ff_ffv1_decoder = {
1140 .long_name = NULL_IF_CONFIG_SMALL("FFmpeg video codec #1"),
1141 .type = AVMEDIA_TYPE_VIDEO,
1142 .id = AV_CODEC_ID_FFV1,
1143 .priv_data_size = sizeof(FFV1Context),
1144 .init = decode_init,
1145 .close = ff_ffv1_close,
1146 .decode = decode_frame,
1147 .init_thread_copy = ONLY_IF_THREADS_ENABLED(init_thread_copy),
1148 .update_thread_context = ONLY_IF_THREADS_ENABLED(update_thread_context),
1149 .capabilities = AV_CODEC_CAP_DR1 /*| AV_CODEC_CAP_DRAW_HORIZ_BAND*/ |
1150 AV_CODEC_CAP_FRAME_THREADS | AV_CODEC_CAP_SLICE_THREADS,
1151 .caps_internal = FF_CODEC_CAP_INIT_CLEANUP