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)
188 sample[0] = s->sample_buffer + 3;
189 sample[1] = s->sample_buffer + w + 6 + 3;
193 memset(s->sample_buffer, 0, 2 * (w + 6) * sizeof(*s->sample_buffer));
195 for (y = 0; y < h; y++) {
196 int16_t *temp = sample[0]; // FIXME: try a normal buffer
198 sample[0] = sample[1];
201 sample[1][-1] = sample[0][0];
202 sample[0][w] = sample[0][w - 1];
205 if (s->avctx->bits_per_raw_sample <= 8) {
206 decode_line(s, w, sample, plane_index, 8);
207 for (x = 0; x < w; x++)
208 src[x + stride * y] = sample[1][x];
210 decode_line(s, w, sample, plane_index, s->avctx->bits_per_raw_sample);
211 if (s->packed_at_lsb) {
212 for (x = 0; x < w; x++) {
213 ((uint16_t*)(src + stride*y))[x] = sample[1][x];
216 for (x = 0; x < w; x++) {
217 ((uint16_t*)(src + stride*y))[x] = sample[1][x] << (16 - s->avctx->bits_per_raw_sample);
221 // STOP_TIMER("decode-line") }
225 static void decode_rgb_frame(FFV1Context *s, uint8_t *src[3], int w, int h, int stride[3])
228 int16_t *sample[4][2];
229 int lbd = s->avctx->bits_per_raw_sample <= 8;
230 int bits = s->avctx->bits_per_raw_sample > 0 ? s->avctx->bits_per_raw_sample : 8;
231 int offset = 1 << bits;
233 for (x = 0; x < 4; x++) {
234 sample[x][0] = s->sample_buffer + x * 2 * (w + 6) + 3;
235 sample[x][1] = s->sample_buffer + (x * 2 + 1) * (w + 6) + 3;
240 memset(s->sample_buffer, 0, 8 * (w + 6) * sizeof(*s->sample_buffer));
242 for (y = 0; y < h; y++) {
243 for (p = 0; p < 3 + s->transparency; p++) {
244 int16_t *temp = sample[p][0]; // FIXME: try a normal buffer
246 sample[p][0] = sample[p][1];
249 sample[p][1][-1]= sample[p][0][0 ];
250 sample[p][0][ w]= sample[p][0][w-1];
251 if (lbd && s->slice_coding_mode == 0)
252 decode_line(s, w, sample[p], (p + 1)/2, 9);
254 decode_line(s, w, sample[p], (p + 1)/2, bits + (s->slice_coding_mode != 1));
256 for (x = 0; x < w; x++) {
257 int g = sample[0][1][x];
258 int b = sample[1][1][x];
259 int r = sample[2][1][x];
260 int a = sample[3][1][x];
262 if (s->slice_coding_mode != 1) {
265 g -= (b * s->slice_rct_by_coef + r * s->slice_rct_ry_coef) >> 2;
271 *((uint32_t*)(src[0] + x*4 + stride[0]*y)) = b + (g<<8) + (r<<16) + (a<<24);
273 *((uint16_t*)(src[0] + x*2 + stride[0]*y)) = b;
274 *((uint16_t*)(src[1] + x*2 + stride[1]*y)) = g;
275 *((uint16_t*)(src[2] + x*2 + stride[2]*y)) = r;
281 static int decode_slice_header(FFV1Context *f, FFV1Context *fs)
283 RangeCoder *c = &fs->c;
284 uint8_t state[CONTEXT_SIZE];
285 unsigned ps, i, context_count;
286 memset(state, 128, sizeof(state));
288 av_assert0(f->version > 2);
290 fs->slice_x = get_symbol(c, state, 0) * f->width ;
291 fs->slice_y = get_symbol(c, state, 0) * f->height;
292 fs->slice_width = (get_symbol(c, state, 0) + 1) * f->width + fs->slice_x;
293 fs->slice_height = (get_symbol(c, state, 0) + 1) * f->height + fs->slice_y;
295 fs->slice_x /= f->num_h_slices;
296 fs->slice_y /= f->num_v_slices;
297 fs->slice_width = fs->slice_width /f->num_h_slices - fs->slice_x;
298 fs->slice_height = fs->slice_height/f->num_v_slices - fs->slice_y;
299 if ((unsigned)fs->slice_width > f->width || (unsigned)fs->slice_height > f->height)
301 if ( (unsigned)fs->slice_x + (uint64_t)fs->slice_width > f->width
302 || (unsigned)fs->slice_y + (uint64_t)fs->slice_height > f->height)
305 for (i = 0; i < f->plane_count; i++) {
306 PlaneContext * const p = &fs->plane[i];
307 int idx = get_symbol(c, state, 0);
308 if (idx >= (unsigned)f->quant_table_count) {
309 av_log(f->avctx, AV_LOG_ERROR, "quant_table_index out of range\n");
312 p->quant_table_index = idx;
313 memcpy(p->quant_table, f->quant_tables[idx], sizeof(p->quant_table));
314 context_count = f->context_count[idx];
316 if (p->context_count < context_count) {
318 av_freep(&p->vlc_state);
320 p->context_count = context_count;
323 ps = get_symbol(c, state, 0);
325 f->cur->interlaced_frame = 1;
326 f->cur->top_field_first = 1;
327 } else if (ps == 2) {
328 f->cur->interlaced_frame = 1;
329 f->cur->top_field_first = 0;
330 } else if (ps == 3) {
331 f->cur->interlaced_frame = 0;
333 f->cur->sample_aspect_ratio.num = get_symbol(c, state, 0);
334 f->cur->sample_aspect_ratio.den = get_symbol(c, state, 0);
336 if (av_image_check_sar(f->width, f->height,
337 f->cur->sample_aspect_ratio) < 0) {
338 av_log(f->avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
339 f->cur->sample_aspect_ratio.num,
340 f->cur->sample_aspect_ratio.den);
341 f->cur->sample_aspect_ratio = (AVRational){ 0, 1 };
344 if (fs->version > 3) {
345 fs->slice_reset_contexts = get_rac(c, state);
346 fs->slice_coding_mode = get_symbol(c, state, 0);
347 if (fs->slice_coding_mode != 1) {
348 fs->slice_rct_by_coef = get_symbol(c, state, 0);
349 fs->slice_rct_ry_coef = get_symbol(c, state, 0);
350 if ((uint64_t)fs->slice_rct_by_coef + (uint64_t)fs->slice_rct_ry_coef > 4) {
351 av_log(f->avctx, AV_LOG_ERROR, "slice_rct_y_coef out of range\n");
352 return AVERROR_INVALIDDATA;
360 static int decode_slice(AVCodecContext *c, void *arg)
362 FFV1Context *fs = *(void **)arg;
363 FFV1Context *f = fs->avctx->priv_data;
364 int width, height, x, y, ret;
365 const int ps = av_pix_fmt_desc_get(c->pix_fmt)->comp[0].step;
366 AVFrame * const p = f->cur;
369 for( si=0; fs != f->slice_context[si]; si ++)
372 if(f->fsrc && !p->key_frame)
373 ff_thread_await_progress(&f->last_picture, si, 0);
375 if(f->fsrc && !p->key_frame) {
376 FFV1Context *fssrc = f->fsrc->slice_context[si];
377 FFV1Context *fsdst = f->slice_context[si];
378 av_assert1(fsdst->plane_count == fssrc->plane_count);
379 av_assert1(fsdst == fs);
382 fsdst->slice_damaged |= fssrc->slice_damaged;
384 for (i = 0; i < f->plane_count; i++) {
385 PlaneContext *psrc = &fssrc->plane[i];
386 PlaneContext *pdst = &fsdst->plane[i];
388 av_free(pdst->state);
389 av_free(pdst->vlc_state);
390 memcpy(pdst, psrc, sizeof(*pdst));
392 pdst->vlc_state = NULL;
395 pdst->state = av_malloc_array(CONTEXT_SIZE, psrc->context_count);
396 memcpy(pdst->state, psrc->state, CONTEXT_SIZE * psrc->context_count);
398 pdst->vlc_state = av_malloc_array(sizeof(*pdst->vlc_state), psrc->context_count);
399 memcpy(pdst->vlc_state, psrc->vlc_state, sizeof(*pdst->vlc_state) * psrc->context_count);
404 fs->slice_rct_by_coef = 1;
405 fs->slice_rct_ry_coef = 1;
407 if (f->version > 2) {
408 if (ff_ffv1_init_slice_state(f, fs) < 0)
409 return AVERROR(ENOMEM);
410 if (decode_slice_header(f, fs) < 0) {
411 fs->slice_x = fs->slice_y = fs->slice_height = fs->slice_width = 0;
412 fs->slice_damaged = 1;
413 return AVERROR_INVALIDDATA;
416 if ((ret = ff_ffv1_init_slice_state(f, fs)) < 0)
418 if (f->cur->key_frame || fs->slice_reset_contexts)
419 ff_ffv1_clear_slice_state(f, fs);
421 width = fs->slice_width;
422 height = fs->slice_height;
426 if (fs->ac == AC_GOLOMB_RICE) {
427 if (f->version == 3 && f->micro_version > 1 || f->version > 3)
428 get_rac(&fs->c, (uint8_t[]) { 129 });
429 fs->ac_byte_count = f->version > 2 || (!x && !y) ? fs->c.bytestream - fs->c.bytestream_start - 1 : 0;
430 init_get_bits(&fs->gb,
431 fs->c.bytestream_start + fs->ac_byte_count,
432 (fs->c.bytestream_end - fs->c.bytestream_start - fs->ac_byte_count) * 8);
435 av_assert1(width && height);
436 if (f->colorspace == 0) {
437 const int chroma_width = FF_CEIL_RSHIFT(width, f->chroma_h_shift);
438 const int chroma_height = FF_CEIL_RSHIFT(height, f->chroma_v_shift);
439 const int cx = x >> f->chroma_h_shift;
440 const int cy = y >> f->chroma_v_shift;
441 decode_plane(fs, p->data[0] + ps*x + y*p->linesize[0], width, height, p->linesize[0], 0);
443 if (f->chroma_planes) {
444 decode_plane(fs, p->data[1] + ps*cx+cy*p->linesize[1], chroma_width, chroma_height, p->linesize[1], 1);
445 decode_plane(fs, p->data[2] + ps*cx+cy*p->linesize[2], chroma_width, chroma_height, p->linesize[2], 1);
447 if (fs->transparency)
448 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);
450 uint8_t *planes[3] = { p->data[0] + ps * x + y * p->linesize[0],
451 p->data[1] + ps * x + y * p->linesize[1],
452 p->data[2] + ps * x + y * p->linesize[2] };
453 decode_rgb_frame(fs, planes, width, height, p->linesize);
455 if (fs->ac != AC_GOLOMB_RICE && f->version > 2) {
457 get_rac(&fs->c, (uint8_t[]) { 129 });
458 v = fs->c.bytestream_end - fs->c.bytestream - 2 - 5*f->ec;
460 av_log(f->avctx, AV_LOG_ERROR, "bytestream end mismatching by %d\n", v);
461 fs->slice_damaged = 1;
467 ff_thread_report_progress(&f->picture, si, 0);
472 static int read_quant_table(RangeCoder *c, int16_t *quant_table, int scale)
476 uint8_t state[CONTEXT_SIZE];
478 memset(state, 128, sizeof(state));
480 for (v = 0; i < 128; v++) {
481 unsigned len = get_symbol(c, state, 0) + 1;
483 if (len > 128 - i || !len)
484 return AVERROR_INVALIDDATA;
487 quant_table[i] = scale * v;
492 for (i = 1; i < 128; i++)
493 quant_table[256 - i] = -quant_table[i];
494 quant_table[128] = -quant_table[127];
499 static int read_quant_tables(RangeCoder *c,
500 int16_t quant_table[MAX_CONTEXT_INPUTS][256])
503 int context_count = 1;
505 for (i = 0; i < 5; i++) {
506 int ret = read_quant_table(c, quant_table[i], context_count);
509 context_count *= ret;
510 if (context_count > 32768U) {
511 return AVERROR_INVALIDDATA;
514 return (context_count + 1) / 2;
517 static int read_extra_header(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 ff_init_range_decoder(c, f->avctx->extradata, f->avctx->extradata_size);
529 ff_build_rac_states(c, 0.05 * (1LL << 32), 256 - 8);
531 f->version = get_symbol(c, state, 0);
532 if (f->version < 2) {
533 av_log(f->avctx, AV_LOG_ERROR, "Invalid version in global header\n");
534 return AVERROR_INVALIDDATA;
536 if (f->version > 2) {
537 c->bytestream_end -= 4;
538 f->micro_version = get_symbol(c, state, 0);
539 if (f->micro_version < 0)
540 return AVERROR_INVALIDDATA;
542 f->ac = get_symbol(c, state, 0);
544 if (f->ac == AC_RANGE_CUSTOM_TAB) {
545 for (i = 1; i < 256; i++)
546 f->state_transition[i] = get_symbol(c, state, 1) + c->one_state[i];
549 f->colorspace = get_symbol(c, state, 0); //YUV cs type
550 f->avctx->bits_per_raw_sample = get_symbol(c, state, 0);
551 f->chroma_planes = get_rac(c, state);
552 f->chroma_h_shift = get_symbol(c, state, 0);
553 f->chroma_v_shift = get_symbol(c, state, 0);
554 f->transparency = get_rac(c, state);
555 f->plane_count = 1 + (f->chroma_planes || f->version<4) + f->transparency;
556 f->num_h_slices = 1 + get_symbol(c, state, 0);
557 f->num_v_slices = 1 + get_symbol(c, state, 0);
559 if (f->chroma_h_shift > 4U || f->chroma_v_shift > 4U) {
560 av_log(f->avctx, AV_LOG_ERROR, "chroma shift parameters %d %d are invalid\n",
561 f->chroma_h_shift, f->chroma_v_shift);
562 return AVERROR_INVALIDDATA;
565 if (f->num_h_slices > (unsigned)f->width || !f->num_h_slices ||
566 f->num_v_slices > (unsigned)f->height || !f->num_v_slices
568 av_log(f->avctx, AV_LOG_ERROR, "slice count invalid\n");
569 return AVERROR_INVALIDDATA;
572 f->quant_table_count = get_symbol(c, state, 0);
573 if (f->quant_table_count > (unsigned)MAX_QUANT_TABLES || !f->quant_table_count) {
574 av_log(f->avctx, AV_LOG_ERROR, "quant table count %d is invalid\n", f->quant_table_count);
575 f->quant_table_count = 0;
576 return AVERROR_INVALIDDATA;
579 for (i = 0; i < f->quant_table_count; i++) {
580 f->context_count[i] = read_quant_tables(c, f->quant_tables[i]);
581 if (f->context_count[i] < 0) {
582 av_log(f->avctx, AV_LOG_ERROR, "read_quant_table error\n");
583 return AVERROR_INVALIDDATA;
586 if ((ret = ff_ffv1_allocate_initial_states(f)) < 0)
589 for (i = 0; i < f->quant_table_count; i++)
590 if (get_rac(c, state)) {
591 for (j = 0; j < f->context_count[i]; j++)
592 for (k = 0; k < CONTEXT_SIZE; k++) {
593 int pred = j ? f->initial_states[i][j - 1][k] : 128;
594 f->initial_states[i][j][k] =
595 (pred + get_symbol(c, state2[k], 1)) & 0xFF;
599 if (f->version > 2) {
600 f->ec = get_symbol(c, state, 0);
601 if (f->micro_version > 2)
602 f->intra = get_symbol(c, state, 0);
605 if (f->version > 2) {
607 v = av_crc(av_crc_get_table(AV_CRC_32_IEEE), 0,
608 f->avctx->extradata, f->avctx->extradata_size);
609 if (v || f->avctx->extradata_size < 4) {
610 av_log(f->avctx, AV_LOG_ERROR, "CRC mismatch %X!\n", v);
611 return AVERROR_INVALIDDATA;
613 crc = AV_RB32(f->avctx->extradata + f->avctx->extradata_size - 4);
616 if (f->avctx->debug & FF_DEBUG_PICT_INFO)
617 av_log(f->avctx, AV_LOG_DEBUG,
618 "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",
619 f->version, f->micro_version,
622 f->avctx->bits_per_raw_sample,
623 f->chroma_planes, f->chroma_h_shift, f->chroma_v_shift,
625 f->num_h_slices, f->num_v_slices,
626 f->quant_table_count,
634 static int read_header(FFV1Context *f)
636 uint8_t state[CONTEXT_SIZE];
637 int i, j, context_count = -1; //-1 to avoid warning
638 RangeCoder *const c = &f->slice_context[0]->c;
640 memset(state, 128, sizeof(state));
642 if (f->version < 2) {
643 int chroma_planes, chroma_h_shift, chroma_v_shift, transparency, colorspace, bits_per_raw_sample;
644 unsigned v= get_symbol(c, state, 0);
646 av_log(f->avctx, AV_LOG_ERROR, "invalid version %d in ver01 header\n", v);
647 return AVERROR_INVALIDDATA;
650 f->ac = get_symbol(c, state, 0);
652 if (f->ac == AC_RANGE_CUSTOM_TAB) {
653 for (i = 1; i < 256; i++)
654 f->state_transition[i] = get_symbol(c, state, 1) + c->one_state[i];
657 colorspace = get_symbol(c, state, 0); //YUV cs type
658 bits_per_raw_sample = f->version > 0 ? get_symbol(c, state, 0) : f->avctx->bits_per_raw_sample;
659 chroma_planes = get_rac(c, state);
660 chroma_h_shift = get_symbol(c, state, 0);
661 chroma_v_shift = get_symbol(c, state, 0);
662 transparency = get_rac(c, state);
663 if (colorspace == 0 && f->avctx->skip_alpha)
666 if (f->plane_count) {
667 if (colorspace != f->colorspace ||
668 bits_per_raw_sample != f->avctx->bits_per_raw_sample ||
669 chroma_planes != f->chroma_planes ||
670 chroma_h_shift != f->chroma_h_shift ||
671 chroma_v_shift != f->chroma_v_shift ||
672 transparency != f->transparency) {
673 av_log(f->avctx, AV_LOG_ERROR, "Invalid change of global parameters\n");
674 return AVERROR_INVALIDDATA;
678 if (chroma_h_shift > 4U || chroma_v_shift > 4U) {
679 av_log(f->avctx, AV_LOG_ERROR, "chroma shift parameters %d %d are invalid\n",
680 chroma_h_shift, chroma_v_shift);
681 return AVERROR_INVALIDDATA;
684 f->colorspace = colorspace;
685 f->avctx->bits_per_raw_sample = bits_per_raw_sample;
686 f->chroma_planes = chroma_planes;
687 f->chroma_h_shift = chroma_h_shift;
688 f->chroma_v_shift = chroma_v_shift;
689 f->transparency = transparency;
691 f->plane_count = 2 + f->transparency;
694 if (f->colorspace == 0) {
695 if (!f->transparency && !f->chroma_planes) {
696 if (f->avctx->bits_per_raw_sample <= 8)
697 f->avctx->pix_fmt = AV_PIX_FMT_GRAY8;
699 f->avctx->pix_fmt = AV_PIX_FMT_GRAY16;
700 } else if (f->avctx->bits_per_raw_sample<=8 && !f->transparency) {
701 switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
702 case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P; break;
703 case 0x01: f->avctx->pix_fmt = AV_PIX_FMT_YUV440P; break;
704 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P; break;
705 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P; break;
706 case 0x20: f->avctx->pix_fmt = AV_PIX_FMT_YUV411P; break;
707 case 0x22: f->avctx->pix_fmt = AV_PIX_FMT_YUV410P; break;
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_YUVA444P; break;
712 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P; break;
713 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P; break;
715 } else if (f->avctx->bits_per_raw_sample == 9 && !f->transparency) {
716 f->packed_at_lsb = 1;
717 switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
718 case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P9; break;
719 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P9; break;
720 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P9; break;
722 } else if (f->avctx->bits_per_raw_sample == 9 && f->transparency) {
723 f->packed_at_lsb = 1;
724 switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
725 case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P9; break;
726 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P9; break;
727 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P9; break;
729 } else if (f->avctx->bits_per_raw_sample == 10 && !f->transparency) {
730 f->packed_at_lsb = 1;
731 switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
732 case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P10; break;
733 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P10; break;
734 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P10; break;
736 } else if (f->avctx->bits_per_raw_sample == 10 && f->transparency) {
737 f->packed_at_lsb = 1;
738 switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
739 case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P10; break;
740 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P10; break;
741 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P10; break;
743 } else if (f->avctx->bits_per_raw_sample == 16 && !f->transparency){
744 switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
745 case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P16; break;
746 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P16; break;
747 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P16; break;
749 } else if (f->avctx->bits_per_raw_sample == 16 && f->transparency){
750 switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
751 case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P16; break;
752 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P16; break;
753 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P16; break;
756 } else if (f->colorspace == 1) {
757 if (f->chroma_h_shift || f->chroma_v_shift) {
758 av_log(f->avctx, AV_LOG_ERROR,
759 "chroma subsampling not supported in this colorspace\n");
760 return AVERROR(ENOSYS);
762 if ( f->avctx->bits_per_raw_sample == 9)
763 f->avctx->pix_fmt = AV_PIX_FMT_GBRP9;
764 else if (f->avctx->bits_per_raw_sample == 10)
765 f->avctx->pix_fmt = AV_PIX_FMT_GBRP10;
766 else if (f->avctx->bits_per_raw_sample == 12)
767 f->avctx->pix_fmt = AV_PIX_FMT_GBRP12;
768 else if (f->avctx->bits_per_raw_sample == 14)
769 f->avctx->pix_fmt = AV_PIX_FMT_GBRP14;
771 if (f->transparency) f->avctx->pix_fmt = AV_PIX_FMT_RGB32;
772 else f->avctx->pix_fmt = AV_PIX_FMT_0RGB32;
774 av_log(f->avctx, AV_LOG_ERROR, "colorspace not supported\n");
775 return AVERROR(ENOSYS);
777 if (f->avctx->pix_fmt == AV_PIX_FMT_NONE) {
778 av_log(f->avctx, AV_LOG_ERROR, "format not supported\n");
779 return AVERROR(ENOSYS);
782 ff_dlog(f->avctx, "%d %d %d\n",
783 f->chroma_h_shift, f->chroma_v_shift, f->avctx->pix_fmt);
784 if (f->version < 2) {
785 context_count = read_quant_tables(c, f->quant_table);
786 if (context_count < 0) {
787 av_log(f->avctx, AV_LOG_ERROR, "read_quant_table error\n");
788 return AVERROR_INVALIDDATA;
790 f->slice_count = f->max_slice_count;
791 } else if (f->version < 3) {
792 f->slice_count = get_symbol(c, state, 0);
794 const uint8_t *p = c->bytestream_end;
795 for (f->slice_count = 0;
796 f->slice_count < MAX_SLICES && 3 < p - c->bytestream_start;
798 int trailer = 3 + 5*!!f->ec;
799 int size = AV_RB24(p-trailer);
800 if (size + trailer > p - c->bytestream_start)
805 if (f->slice_count > (unsigned)MAX_SLICES || f->slice_count <= 0 || f->slice_count > f->max_slice_count) {
806 av_log(f->avctx, AV_LOG_ERROR, "slice count %d is invalid (max=%d)\n", f->slice_count, f->max_slice_count);
807 return AVERROR_INVALIDDATA;
810 for (j = 0; j < f->slice_count; j++) {
811 FFV1Context *fs = f->slice_context[j];
813 fs->packed_at_lsb = f->packed_at_lsb;
815 fs->slice_damaged = 0;
817 if (f->version == 2) {
818 fs->slice_x = get_symbol(c, state, 0) * f->width ;
819 fs->slice_y = get_symbol(c, state, 0) * f->height;
820 fs->slice_width = (get_symbol(c, state, 0) + 1) * f->width + fs->slice_x;
821 fs->slice_height = (get_symbol(c, state, 0) + 1) * f->height + fs->slice_y;
823 fs->slice_x /= f->num_h_slices;
824 fs->slice_y /= f->num_v_slices;
825 fs->slice_width = fs->slice_width / f->num_h_slices - fs->slice_x;
826 fs->slice_height = fs->slice_height / f->num_v_slices - fs->slice_y;
827 if ((unsigned)fs->slice_width > f->width ||
828 (unsigned)fs->slice_height > f->height)
829 return AVERROR_INVALIDDATA;
830 if ( (unsigned)fs->slice_x + (uint64_t)fs->slice_width > f->width
831 || (unsigned)fs->slice_y + (uint64_t)fs->slice_height > f->height)
832 return AVERROR_INVALIDDATA;
835 for (i = 0; i < f->plane_count; i++) {
836 PlaneContext *const p = &fs->plane[i];
838 if (f->version == 2) {
839 int idx = get_symbol(c, state, 0);
840 if (idx > (unsigned)f->quant_table_count) {
841 av_log(f->avctx, AV_LOG_ERROR,
842 "quant_table_index out of range\n");
843 return AVERROR_INVALIDDATA;
845 p->quant_table_index = idx;
846 memcpy(p->quant_table, f->quant_tables[idx],
847 sizeof(p->quant_table));
848 context_count = f->context_count[idx];
850 memcpy(p->quant_table, f->quant_table, sizeof(p->quant_table));
853 if (f->version <= 2) {
854 av_assert0(context_count >= 0);
855 if (p->context_count < context_count) {
857 av_freep(&p->vlc_state);
859 p->context_count = context_count;
866 static av_cold int decode_init(AVCodecContext *avctx)
868 FFV1Context *f = avctx->priv_data;
871 if ((ret = ff_ffv1_common_init(avctx)) < 0)
874 if (avctx->extradata && (ret = read_extra_header(f)) < 0)
877 if ((ret = ff_ffv1_init_slice_contexts(f)) < 0)
880 avctx->internal->allocate_progress = 1;
885 static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
887 uint8_t *buf = avpkt->data;
888 int buf_size = avpkt->size;
889 FFV1Context *f = avctx->priv_data;
890 RangeCoder *const c = &f->slice_context[0]->c;
892 uint8_t keystate = 128;
896 if (f->last_picture.f)
897 ff_thread_release_buffer(avctx, &f->last_picture);
898 FFSWAP(ThreadFrame, f->picture, f->last_picture);
900 f->cur = p = f->picture.f;
902 if (f->version < 3 && avctx->field_order > AV_FIELD_PROGRESSIVE) {
903 /* we have interlaced material flagged in container */
904 p->interlaced_frame = 1;
905 if (avctx->field_order == AV_FIELD_TT || avctx->field_order == AV_FIELD_TB)
906 p->top_field_first = 1;
910 ff_init_range_decoder(c, buf, buf_size);
911 ff_build_rac_states(c, 0.05 * (1LL << 32), 256 - 8);
913 p->pict_type = AV_PICTURE_TYPE_I; //FIXME I vs. P
914 if (get_rac(c, &keystate)) {
917 if ((ret = read_header(f)) < 0)
921 if (!f->key_frame_ok) {
922 av_log(avctx, AV_LOG_ERROR,
923 "Cannot decode non-keyframe without valid keyframe\n");
924 return AVERROR_INVALIDDATA;
929 if ((ret = ff_thread_get_buffer(avctx, &f->picture, AV_GET_BUFFER_FLAG_REF)) < 0)
932 if (avctx->debug & FF_DEBUG_PICT_INFO)
933 av_log(avctx, AV_LOG_DEBUG, "ver:%d keyframe:%d coder:%d ec:%d slices:%d bps:%d\n",
934 f->version, p->key_frame, f->ac, f->ec, f->slice_count, f->avctx->bits_per_raw_sample);
936 ff_thread_finish_setup(avctx);
938 buf_p = buf + buf_size;
939 for (i = f->slice_count - 1; i >= 0; i--) {
940 FFV1Context *fs = f->slice_context[i];
941 int trailer = 3 + 5*!!f->ec;
944 if (i || f->version > 2) v = AV_RB24(buf_p-trailer) + trailer;
945 else v = buf_p - c->bytestream_start;
946 if (buf_p - c->bytestream_start < v) {
947 av_log(avctx, AV_LOG_ERROR, "Slice pointer chain broken\n");
948 ff_thread_report_progress(&f->picture, INT_MAX, 0);
949 return AVERROR_INVALIDDATA;
954 unsigned crc = av_crc(av_crc_get_table(AV_CRC_32_IEEE), 0, buf_p, v);
956 int64_t ts = avpkt->pts != AV_NOPTS_VALUE ? avpkt->pts : avpkt->dts;
957 av_log(f->avctx, AV_LOG_ERROR, "CRC mismatch %X!", crc);
958 if (ts != AV_NOPTS_VALUE && avctx->pkt_timebase.num) {
959 av_log(f->avctx, AV_LOG_ERROR, "at %f seconds\n", ts*av_q2d(avctx->pkt_timebase));
960 } else if (ts != AV_NOPTS_VALUE) {
961 av_log(f->avctx, AV_LOG_ERROR, "at %"PRId64"\n", ts);
963 av_log(f->avctx, AV_LOG_ERROR, "\n");
965 fs->slice_damaged = 1;
967 if (avctx->debug & FF_DEBUG_PICT_INFO) {
968 av_log(avctx, AV_LOG_DEBUG, "slice %d, CRC: 0x%08X\n", i, AV_RB32(buf_p + v - 4));
973 ff_init_range_decoder(&fs->c, buf_p, v);
975 fs->c.bytestream_end = buf_p + v;
981 avctx->execute(avctx,
983 &f->slice_context[0],
988 for (i = f->slice_count - 1; i >= 0; i--) {
989 FFV1Context *fs = f->slice_context[i];
991 if (fs->slice_damaged && f->last_picture.f->data[0]) {
992 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt);
993 const uint8_t *src[4];
995 ff_thread_await_progress(&f->last_picture, INT_MAX, 0);
996 for (j = 0; j < 4; j++) {
997 int pixshift = desc->comp[j].depth > 8;
998 int sh = (j == 1 || j == 2) ? f->chroma_h_shift : 0;
999 int sv = (j == 1 || j == 2) ? f->chroma_v_shift : 0;
1000 dst[j] = p->data[j] + p->linesize[j] *
1001 (fs->slice_y >> sv) + ((fs->slice_x >> sh) << pixshift);
1002 src[j] = f->last_picture.f->data[j] + f->last_picture.f->linesize[j] *
1003 (fs->slice_y >> sv) + ((fs->slice_x >> sh) << pixshift);
1005 av_image_copy(dst, p->linesize, src,
1006 f->last_picture.f->linesize,
1012 ff_thread_report_progress(&f->picture, INT_MAX, 0);
1014 f->picture_number++;
1016 if (f->last_picture.f)
1017 ff_thread_release_buffer(avctx, &f->last_picture);
1019 if ((ret = av_frame_ref(data, f->picture.f)) < 0)
1028 static int init_thread_copy(AVCodecContext *avctx)
1030 FFV1Context *f = avctx->priv_data;
1033 f->picture.f = NULL;
1034 f->last_picture.f = NULL;
1035 f->sample_buffer = NULL;
1036 f->max_slice_count = 0;
1039 for (i = 0; i < f->quant_table_count; i++) {
1040 av_assert0(f->version > 1);
1041 f->initial_states[i] = av_memdup(f->initial_states[i],
1042 f->context_count[i] * sizeof(*f->initial_states[i]));
1045 f->picture.f = av_frame_alloc();
1046 f->last_picture.f = av_frame_alloc();
1048 if ((ret = ff_ffv1_init_slice_contexts(f)) < 0)
1055 static void copy_fields(FFV1Context *fsdst, FFV1Context *fssrc, FFV1Context *fsrc)
1057 fsdst->version = fsrc->version;
1058 fsdst->micro_version = fsrc->micro_version;
1059 fsdst->chroma_planes = fsrc->chroma_planes;
1060 fsdst->chroma_h_shift = fsrc->chroma_h_shift;
1061 fsdst->chroma_v_shift = fsrc->chroma_v_shift;
1062 fsdst->transparency = fsrc->transparency;
1063 fsdst->plane_count = fsrc->plane_count;
1064 fsdst->ac = fsrc->ac;
1065 fsdst->colorspace = fsrc->colorspace;
1067 fsdst->ec = fsrc->ec;
1068 fsdst->intra = fsrc->intra;
1069 fsdst->slice_damaged = fssrc->slice_damaged;
1070 fsdst->key_frame_ok = fsrc->key_frame_ok;
1072 fsdst->bits_per_raw_sample = fsrc->bits_per_raw_sample;
1073 fsdst->packed_at_lsb = fsrc->packed_at_lsb;
1074 fsdst->slice_count = fsrc->slice_count;
1075 if (fsrc->version<3){
1076 fsdst->slice_x = fssrc->slice_x;
1077 fsdst->slice_y = fssrc->slice_y;
1078 fsdst->slice_width = fssrc->slice_width;
1079 fsdst->slice_height = fssrc->slice_height;
1084 static int update_thread_context(AVCodecContext *dst, const AVCodecContext *src)
1086 FFV1Context *fsrc = src->priv_data;
1087 FFV1Context *fdst = dst->priv_data;
1094 ThreadFrame picture = fdst->picture, last_picture = fdst->last_picture;
1095 uint8_t (*initial_states[MAX_QUANT_TABLES])[32];
1096 struct FFV1Context *slice_context[MAX_SLICES];
1097 memcpy(initial_states, fdst->initial_states, sizeof(fdst->initial_states));
1098 memcpy(slice_context, fdst->slice_context , sizeof(fdst->slice_context));
1100 memcpy(fdst, fsrc, sizeof(*fdst));
1101 memcpy(fdst->initial_states, initial_states, sizeof(fdst->initial_states));
1102 memcpy(fdst->slice_context, slice_context , sizeof(fdst->slice_context));
1103 fdst->picture = picture;
1104 fdst->last_picture = last_picture;
1105 for (i = 0; i<fdst->num_h_slices * fdst->num_v_slices; i++) {
1106 FFV1Context *fssrc = fsrc->slice_context[i];
1107 FFV1Context *fsdst = fdst->slice_context[i];
1108 copy_fields(fsdst, fssrc, fsrc);
1110 av_assert0(!fdst->plane[0].state);
1111 av_assert0(!fdst->sample_buffer);
1114 av_assert1(fdst->max_slice_count == fsrc->max_slice_count);
1117 ff_thread_release_buffer(dst, &fdst->picture);
1118 if (fsrc->picture.f->data[0]) {
1119 if ((ret = ff_thread_ref_frame(&fdst->picture, &fsrc->picture)) < 0)
1129 AVCodec ff_ffv1_decoder = {
1131 .long_name = NULL_IF_CONFIG_SMALL("FFmpeg video codec #1"),
1132 .type = AVMEDIA_TYPE_VIDEO,
1133 .id = AV_CODEC_ID_FFV1,
1134 .priv_data_size = sizeof(FFV1Context),
1135 .init = decode_init,
1136 .close = ff_ffv1_close,
1137 .decode = decode_frame,
1138 .init_thread_copy = ONLY_IF_THREADS_ENABLED(init_thread_copy),
1139 .update_thread_context = ONLY_IF_THREADS_ENABLED(update_thread_context),
1140 .capabilities = AV_CODEC_CAP_DR1 /*| AV_CODEC_CAP_DRAW_HORIZ_BAND*/ |
1141 AV_CODEC_CAP_FRAME_THREADS | AV_CODEC_CAP_SLICE_THREADS,
1142 .caps_internal = FF_CODEC_CAP_INIT_CLEANUP