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
54 for (i = e - 1; i >= 0; i--)
55 a += a + get_rac(c, state + 22 + FFMIN(i, 9)); // 22..31
57 e = -(is_signed && get_rac(c, state + 11 + FFMIN(e, 10))); // 11..21
62 static av_noinline int get_symbol(RangeCoder *c, uint8_t *state, int is_signed)
64 return get_symbol_inline(c, state, is_signed);
67 static inline int get_vlc_symbol(GetBitContext *gb, VlcState *const state,
74 while (i < state->error_sum) { // FIXME: optimize
79 v = get_sr_golomb(gb, k, 12, bits);
80 ff_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);
84 if (k == 0 && 2 * state->drift <= -state->count)
87 v ^= ((2 * state->drift + state->count) >> 31);
90 ret = fold(v + state->bias, bits);
92 update_vlc_state(state, v);
97 static av_always_inline void decode_line(FFV1Context *s, int w,
99 int plane_index, int bits)
101 PlaneContext *const p = &s->plane[plane_index];
102 RangeCoder *const c = &s->c;
106 int run_index = s->run_index;
108 if (s->slice_coding_mode == 1) {
110 for (x = 0; x < w; x++) {
112 for (i=0; i<bits; i++) {
114 v += v + get_rac(c, &state);
121 for (x = 0; x < w; x++) {
122 int diff, context, sign;
124 context = get_context(p, sample[1] + x, sample[0] + x, sample[1] + x);
131 av_assert2(context < p->context_count);
134 diff = get_symbol_inline(c, p->state[context], 1);
136 if (context == 0 && run_mode == 0)
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)
146 if (ff_log2_run[run_index])
147 run_count = get_bits(&s->gb, ff_log2_run[run_index]);
159 diff = get_vlc_symbol(&s->gb, &p->vlc_state[context],
166 diff = get_vlc_symbol(&s->gb, &p->vlc_state[context], bits);
168 ff_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));
175 sample[1][x] = av_mod_uintp2(predict(sample[1] + x, sample[0] + x) + diff, bits);
177 s->run_index = run_index;
180 static void decode_plane(FFV1Context *s, uint8_t *src,
181 int w, int h, int stride, int plane_index)
185 sample[0] = s->sample_buffer + 3;
186 sample[1] = s->sample_buffer + w + 6 + 3;
190 memset(s->sample_buffer, 0, 2 * (w + 6) * sizeof(*s->sample_buffer));
192 for (y = 0; y < h; y++) {
193 int16_t *temp = sample[0]; // FIXME: try a normal buffer
195 sample[0] = sample[1];
198 sample[1][-1] = sample[0][0];
199 sample[0][w] = sample[0][w - 1];
202 if (s->avctx->bits_per_raw_sample <= 8) {
203 decode_line(s, w, sample, plane_index, 8);
204 for (x = 0; x < w; x++)
205 src[x + stride * y] = sample[1][x];
207 decode_line(s, w, sample, plane_index, s->avctx->bits_per_raw_sample);
208 if (s->packed_at_lsb) {
209 for (x = 0; x < w; x++) {
210 ((uint16_t*)(src + stride*y))[x] = sample[1][x];
213 for (x = 0; x < w; x++) {
214 ((uint16_t*)(src + stride*y))[x] = sample[1][x] << (16 - s->avctx->bits_per_raw_sample);
218 // STOP_TIMER("decode-line") }
222 static void decode_rgb_frame(FFV1Context *s, uint8_t *src[3], int w, int h, int stride[3])
225 int16_t *sample[4][2];
226 int lbd = s->avctx->bits_per_raw_sample <= 8;
227 int bits = s->avctx->bits_per_raw_sample > 0 ? s->avctx->bits_per_raw_sample : 8;
228 int offset = 1 << bits;
230 for (x = 0; x < 4; x++) {
231 sample[x][0] = s->sample_buffer + x * 2 * (w + 6) + 3;
232 sample[x][1] = s->sample_buffer + (x * 2 + 1) * (w + 6) + 3;
237 memset(s->sample_buffer, 0, 8 * (w + 6) * sizeof(*s->sample_buffer));
239 for (y = 0; y < h; y++) {
240 for (p = 0; p < 3 + s->transparency; p++) {
241 int16_t *temp = sample[p][0]; // FIXME: try a normal buffer
243 sample[p][0] = sample[p][1];
246 sample[p][1][-1]= sample[p][0][0 ];
247 sample[p][0][ w]= sample[p][0][w-1];
248 if (lbd && s->slice_coding_mode == 0)
249 decode_line(s, w, sample[p], (p + 1)/2, 9);
251 decode_line(s, w, sample[p], (p + 1)/2, bits + (s->slice_coding_mode != 1));
253 for (x = 0; x < w; x++) {
254 int g = sample[0][1][x];
255 int b = sample[1][1][x];
256 int r = sample[2][1][x];
257 int a = sample[3][1][x];
259 if (s->slice_coding_mode != 1) {
262 g -= (b * s->slice_rct_by_coef + r * s->slice_rct_ry_coef) >> 2;
268 *((uint32_t*)(src[0] + x*4 + stride[0]*y)) = b + (g<<8) + (r<<16) + (a<<24);
270 *((uint16_t*)(src[0] + x*2 + stride[0]*y)) = b;
271 *((uint16_t*)(src[1] + x*2 + stride[1]*y)) = g;
272 *((uint16_t*)(src[2] + x*2 + stride[2]*y)) = r;
278 static int decode_slice_header(FFV1Context *f, FFV1Context *fs)
280 RangeCoder *c = &fs->c;
281 uint8_t state[CONTEXT_SIZE];
282 unsigned ps, i, context_count;
283 memset(state, 128, sizeof(state));
285 av_assert0(f->version > 2);
287 fs->slice_x = get_symbol(c, state, 0) * f->width ;
288 fs->slice_y = get_symbol(c, state, 0) * f->height;
289 fs->slice_width = (get_symbol(c, state, 0) + 1) * f->width + fs->slice_x;
290 fs->slice_height = (get_symbol(c, state, 0) + 1) * f->height + fs->slice_y;
292 fs->slice_x /= f->num_h_slices;
293 fs->slice_y /= f->num_v_slices;
294 fs->slice_width = fs->slice_width /f->num_h_slices - fs->slice_x;
295 fs->slice_height = fs->slice_height/f->num_v_slices - fs->slice_y;
296 if ((unsigned)fs->slice_width > f->width || (unsigned)fs->slice_height > f->height)
298 if ( (unsigned)fs->slice_x + (uint64_t)fs->slice_width > f->width
299 || (unsigned)fs->slice_y + (uint64_t)fs->slice_height > f->height)
302 for (i = 0; i < f->plane_count; i++) {
303 PlaneContext * const p = &fs->plane[i];
304 int idx = get_symbol(c, state, 0);
305 if (idx > (unsigned)f->quant_table_count) {
306 av_log(f->avctx, AV_LOG_ERROR, "quant_table_index out of range\n");
309 p->quant_table_index = idx;
310 memcpy(p->quant_table, f->quant_tables[idx], sizeof(p->quant_table));
311 context_count = f->context_count[idx];
313 if (p->context_count < context_count) {
315 av_freep(&p->vlc_state);
317 p->context_count = context_count;
320 ps = get_symbol(c, state, 0);
322 f->cur->interlaced_frame = 1;
323 f->cur->top_field_first = 1;
324 } else if (ps == 2) {
325 f->cur->interlaced_frame = 1;
326 f->cur->top_field_first = 0;
327 } else if (ps == 3) {
328 f->cur->interlaced_frame = 0;
330 f->cur->sample_aspect_ratio.num = get_symbol(c, state, 0);
331 f->cur->sample_aspect_ratio.den = get_symbol(c, state, 0);
333 if (av_image_check_sar(f->width, f->height,
334 f->cur->sample_aspect_ratio) < 0) {
335 av_log(f->avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
336 f->cur->sample_aspect_ratio.num,
337 f->cur->sample_aspect_ratio.den);
338 f->cur->sample_aspect_ratio = (AVRational){ 0, 1 };
341 if (fs->version > 3) {
342 fs->slice_reset_contexts = get_rac(c, state);
343 fs->slice_coding_mode = get_symbol(c, state, 0);
344 if (fs->slice_coding_mode != 1) {
345 fs->slice_rct_by_coef = get_symbol(c, state, 0);
346 fs->slice_rct_ry_coef = get_symbol(c, state, 0);
347 if ((uint64_t)fs->slice_rct_by_coef + (uint64_t)fs->slice_rct_ry_coef > 4) {
348 av_log(f->avctx, AV_LOG_ERROR, "slice_rct_y_coef out of range\n");
349 return AVERROR_INVALIDDATA;
357 static int decode_slice(AVCodecContext *c, void *arg)
359 FFV1Context *fs = *(void **)arg;
360 FFV1Context *f = fs->avctx->priv_data;
361 int width, height, x, y, ret;
362 const int ps = av_pix_fmt_desc_get(c->pix_fmt)->comp[0].step_minus1 + 1;
363 AVFrame * const p = f->cur;
366 for( si=0; fs != f->slice_context[si]; si ++)
369 if(f->fsrc && !p->key_frame)
370 ff_thread_await_progress(&f->last_picture, si, 0);
372 if(f->fsrc && !p->key_frame) {
373 FFV1Context *fssrc = f->fsrc->slice_context[si];
374 FFV1Context *fsdst = f->slice_context[si];
375 av_assert1(fsdst->plane_count == fssrc->plane_count);
376 av_assert1(fsdst == fs);
379 fsdst->slice_damaged |= fssrc->slice_damaged;
381 for (i = 0; i < f->plane_count; i++) {
382 PlaneContext *psrc = &fssrc->plane[i];
383 PlaneContext *pdst = &fsdst->plane[i];
385 av_free(pdst->state);
386 av_free(pdst->vlc_state);
387 memcpy(pdst, psrc, sizeof(*pdst));
389 pdst->vlc_state = NULL;
392 pdst->state = av_malloc_array(CONTEXT_SIZE, psrc->context_count);
393 memcpy(pdst->state, psrc->state, CONTEXT_SIZE * psrc->context_count);
395 pdst->vlc_state = av_malloc_array(sizeof(*pdst->vlc_state), psrc->context_count);
396 memcpy(pdst->vlc_state, psrc->vlc_state, sizeof(*pdst->vlc_state) * psrc->context_count);
401 fs->slice_rct_by_coef = 1;
402 fs->slice_rct_ry_coef = 1;
404 if (f->version > 2) {
405 if (ffv1_init_slice_state(f, fs) < 0)
406 return AVERROR(ENOMEM);
407 if (decode_slice_header(f, fs) < 0) {
408 fs->slice_damaged = 1;
409 return AVERROR_INVALIDDATA;
412 if ((ret = ffv1_init_slice_state(f, fs)) < 0)
414 if (f->cur->key_frame || fs->slice_reset_contexts)
415 ffv1_clear_slice_state(f, fs);
417 width = fs->slice_width;
418 height = fs->slice_height;
423 if (f->version == 3 && f->micro_version > 1 || f->version > 3)
424 get_rac(&fs->c, (uint8_t[]) { 129 });
425 fs->ac_byte_count = f->version > 2 || (!x && !y) ? fs->c.bytestream - fs->c.bytestream_start - 1 : 0;
426 init_get_bits(&fs->gb,
427 fs->c.bytestream_start + fs->ac_byte_count,
428 (fs->c.bytestream_end - fs->c.bytestream_start - fs->ac_byte_count) * 8);
431 av_assert1(width && height);
432 if (f->colorspace == 0) {
433 const int chroma_width = FF_CEIL_RSHIFT(width, f->chroma_h_shift);
434 const int chroma_height = FF_CEIL_RSHIFT(height, f->chroma_v_shift);
435 const int cx = x >> f->chroma_h_shift;
436 const int cy = y >> f->chroma_v_shift;
437 decode_plane(fs, p->data[0] + ps*x + y*p->linesize[0], width, height, p->linesize[0], 0);
439 if (f->chroma_planes) {
440 decode_plane(fs, p->data[1] + ps*cx+cy*p->linesize[1], chroma_width, chroma_height, p->linesize[1], 1);
441 decode_plane(fs, p->data[2] + ps*cx+cy*p->linesize[2], chroma_width, chroma_height, p->linesize[2], 1);
443 if (fs->transparency)
444 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);
446 uint8_t *planes[3] = { p->data[0] + ps * x + y * p->linesize[0],
447 p->data[1] + ps * x + y * p->linesize[1],
448 p->data[2] + ps * x + y * p->linesize[2] };
449 decode_rgb_frame(fs, planes, width, height, p->linesize);
451 if (fs->ac && f->version > 2) {
453 get_rac(&fs->c, (uint8_t[]) { 129 });
454 v = fs->c.bytestream_end - fs->c.bytestream - 2 - 5*f->ec;
456 av_log(f->avctx, AV_LOG_ERROR, "bytestream end mismatching by %d\n", v);
457 fs->slice_damaged = 1;
463 ff_thread_report_progress(&f->picture, si, 0);
468 static int read_quant_table(RangeCoder *c, int16_t *quant_table, int scale)
472 uint8_t state[CONTEXT_SIZE];
474 memset(state, 128, sizeof(state));
476 for (v = 0; i < 128; v++) {
477 unsigned len = get_symbol(c, state, 0) + 1;
479 if (len > 128 - i || !len)
480 return AVERROR_INVALIDDATA;
483 quant_table[i] = scale * v;
488 for (i = 1; i < 128; i++)
489 quant_table[256 - i] = -quant_table[i];
490 quant_table[128] = -quant_table[127];
495 static int read_quant_tables(RangeCoder *c,
496 int16_t quant_table[MAX_CONTEXT_INPUTS][256])
499 int context_count = 1;
501 for (i = 0; i < 5; i++) {
502 context_count *= read_quant_table(c, quant_table[i], context_count);
503 if (context_count > 32768U) {
504 return AVERROR_INVALIDDATA;
507 return (context_count + 1) / 2;
510 static int read_extra_header(FFV1Context *f)
512 RangeCoder *const c = &f->c;
513 uint8_t state[CONTEXT_SIZE];
515 uint8_t state2[32][CONTEXT_SIZE];
517 memset(state2, 128, sizeof(state2));
518 memset(state, 128, sizeof(state));
520 ff_init_range_decoder(c, f->avctx->extradata, f->avctx->extradata_size);
521 ff_build_rac_states(c, 0.05 * (1LL << 32), 256 - 8);
523 f->version = get_symbol(c, state, 0);
524 if (f->version < 2) {
525 av_log(f->avctx, AV_LOG_ERROR, "Invalid version in global header\n");
526 return AVERROR_INVALIDDATA;
528 if (f->version > 2) {
529 c->bytestream_end -= 4;
530 f->micro_version = get_symbol(c, state, 0);
531 if (f->micro_version < 0)
532 return AVERROR_INVALIDDATA;
534 f->ac = f->avctx->coder_type = get_symbol(c, state, 0);
536 for (i = 1; i < 256; i++)
537 f->state_transition[i] = get_symbol(c, state, 1) + c->one_state[i];
540 f->colorspace = get_symbol(c, state, 0); //YUV cs type
541 f->avctx->bits_per_raw_sample = get_symbol(c, state, 0);
542 f->chroma_planes = get_rac(c, state);
543 f->chroma_h_shift = get_symbol(c, state, 0);
544 f->chroma_v_shift = get_symbol(c, state, 0);
545 f->transparency = get_rac(c, state);
546 f->plane_count = 1 + (f->chroma_planes || f->version<4) + f->transparency;
547 f->num_h_slices = 1 + get_symbol(c, state, 0);
548 f->num_v_slices = 1 + get_symbol(c, state, 0);
550 if (f->chroma_h_shift > 4U || f->chroma_v_shift > 4U) {
551 av_log(f->avctx, AV_LOG_ERROR, "chroma shift parameters %d %d are invalid\n",
552 f->chroma_h_shift, f->chroma_v_shift);
553 return AVERROR_INVALIDDATA;
556 if (f->num_h_slices > (unsigned)f->width || !f->num_h_slices ||
557 f->num_v_slices > (unsigned)f->height || !f->num_v_slices
559 av_log(f->avctx, AV_LOG_ERROR, "slice count invalid\n");
560 return AVERROR_INVALIDDATA;
563 f->quant_table_count = get_symbol(c, state, 0);
564 if (f->quant_table_count > (unsigned)MAX_QUANT_TABLES)
565 return AVERROR_INVALIDDATA;
567 for (i = 0; i < f->quant_table_count; i++) {
568 f->context_count[i] = read_quant_tables(c, f->quant_tables[i]);
569 if (f->context_count[i] < 0) {
570 av_log(f->avctx, AV_LOG_ERROR, "read_quant_table error\n");
571 return AVERROR_INVALIDDATA;
574 if ((ret = ffv1_allocate_initial_states(f)) < 0)
577 for (i = 0; i < f->quant_table_count; i++)
578 if (get_rac(c, state)) {
579 for (j = 0; j < f->context_count[i]; j++)
580 for (k = 0; k < CONTEXT_SIZE; k++) {
581 int pred = j ? f->initial_states[i][j - 1][k] : 128;
582 f->initial_states[i][j][k] =
583 (pred + get_symbol(c, state2[k], 1)) & 0xFF;
587 if (f->version > 2) {
588 f->ec = get_symbol(c, state, 0);
589 if (f->micro_version > 2)
590 f->intra = get_symbol(c, state, 0);
593 if (f->version > 2) {
595 v = av_crc(av_crc_get_table(AV_CRC_32_IEEE), 0,
596 f->avctx->extradata, f->avctx->extradata_size);
598 av_log(f->avctx, AV_LOG_ERROR, "CRC mismatch %X!\n", v);
599 return AVERROR_INVALIDDATA;
603 if (f->avctx->debug & FF_DEBUG_PICT_INFO)
604 av_log(f->avctx, AV_LOG_DEBUG,
605 "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",
606 f->version, f->micro_version,
609 f->avctx->bits_per_raw_sample,
610 f->chroma_planes, f->chroma_h_shift, f->chroma_v_shift,
612 f->num_h_slices, f->num_v_slices,
613 f->quant_table_count,
620 static int read_header(FFV1Context *f)
622 uint8_t state[CONTEXT_SIZE];
623 int i, j, context_count = -1; //-1 to avoid warning
624 RangeCoder *const c = &f->slice_context[0]->c;
626 memset(state, 128, sizeof(state));
628 if (f->version < 2) {
629 int chroma_planes, chroma_h_shift, chroma_v_shift, transparency, colorspace, bits_per_raw_sample;
630 unsigned v= get_symbol(c, state, 0);
632 av_log(f->avctx, AV_LOG_ERROR, "invalid version %d in ver01 header\n", v);
633 return AVERROR_INVALIDDATA;
636 f->ac = f->avctx->coder_type = get_symbol(c, state, 0);
638 for (i = 1; i < 256; i++)
639 f->state_transition[i] = get_symbol(c, state, 1) + c->one_state[i];
642 colorspace = get_symbol(c, state, 0); //YUV cs type
643 bits_per_raw_sample = f->version > 0 ? get_symbol(c, state, 0) : f->avctx->bits_per_raw_sample;
644 chroma_planes = get_rac(c, state);
645 chroma_h_shift = get_symbol(c, state, 0);
646 chroma_v_shift = get_symbol(c, state, 0);
647 transparency = get_rac(c, state);
648 if (colorspace == 0 && f->avctx->skip_alpha)
651 if (f->plane_count) {
652 if (colorspace != f->colorspace ||
653 bits_per_raw_sample != f->avctx->bits_per_raw_sample ||
654 chroma_planes != f->chroma_planes ||
655 chroma_h_shift != f->chroma_h_shift ||
656 chroma_v_shift != f->chroma_v_shift ||
657 transparency != f->transparency) {
658 av_log(f->avctx, AV_LOG_ERROR, "Invalid change of global parameters\n");
659 return AVERROR_INVALIDDATA;
663 if (chroma_h_shift > 4U || chroma_v_shift > 4U) {
664 av_log(f->avctx, AV_LOG_ERROR, "chroma shift parameters %d %d are invalid\n",
665 chroma_h_shift, chroma_v_shift);
666 return AVERROR_INVALIDDATA;
669 f->colorspace = colorspace;
670 f->avctx->bits_per_raw_sample = bits_per_raw_sample;
671 f->chroma_planes = chroma_planes;
672 f->chroma_h_shift = chroma_h_shift;
673 f->chroma_v_shift = chroma_v_shift;
674 f->transparency = transparency;
676 f->plane_count = 2 + f->transparency;
679 if (f->colorspace == 0) {
680 if (!f->transparency && !f->chroma_planes) {
681 if (f->avctx->bits_per_raw_sample <= 8)
682 f->avctx->pix_fmt = AV_PIX_FMT_GRAY8;
684 f->avctx->pix_fmt = AV_PIX_FMT_GRAY16;
685 } else if (f->avctx->bits_per_raw_sample<=8 && !f->transparency) {
686 switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
687 case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P; break;
688 case 0x01: f->avctx->pix_fmt = AV_PIX_FMT_YUV440P; break;
689 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P; break;
690 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P; break;
691 case 0x20: f->avctx->pix_fmt = AV_PIX_FMT_YUV411P; break;
692 case 0x22: f->avctx->pix_fmt = AV_PIX_FMT_YUV410P; break;
694 } else if (f->avctx->bits_per_raw_sample <= 8 && f->transparency) {
695 switch(16*f->chroma_h_shift + f->chroma_v_shift) {
696 case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P; break;
697 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P; break;
698 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P; break;
700 } else if (f->avctx->bits_per_raw_sample == 9 && !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_YUV444P9; break;
704 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P9; break;
705 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P9; break;
707 } else if (f->avctx->bits_per_raw_sample == 9 && 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_YUVA444P9; break;
711 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P9; break;
712 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P9; break;
714 } else if (f->avctx->bits_per_raw_sample == 10 && !f->transparency) {
715 f->packed_at_lsb = 1;
716 switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
717 case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P10; break;
718 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P10; break;
719 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P10; break;
721 } else if (f->avctx->bits_per_raw_sample == 10 && f->transparency) {
722 f->packed_at_lsb = 1;
723 switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
724 case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P10; break;
725 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P10; break;
726 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P10; break;
728 } else if (f->avctx->bits_per_raw_sample == 16 && !f->transparency){
729 switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
730 case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P16; break;
731 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P16; break;
732 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P16; break;
734 } else if (f->avctx->bits_per_raw_sample == 16 && f->transparency){
735 switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
736 case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P16; break;
737 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P16; break;
738 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P16; break;
741 } else if (f->colorspace == 1) {
742 if (f->chroma_h_shift || f->chroma_v_shift) {
743 av_log(f->avctx, AV_LOG_ERROR,
744 "chroma subsampling not supported in this colorspace\n");
745 return AVERROR(ENOSYS);
747 if ( f->avctx->bits_per_raw_sample == 9)
748 f->avctx->pix_fmt = AV_PIX_FMT_GBRP9;
749 else if (f->avctx->bits_per_raw_sample == 10)
750 f->avctx->pix_fmt = AV_PIX_FMT_GBRP10;
751 else if (f->avctx->bits_per_raw_sample == 12)
752 f->avctx->pix_fmt = AV_PIX_FMT_GBRP12;
753 else if (f->avctx->bits_per_raw_sample == 14)
754 f->avctx->pix_fmt = AV_PIX_FMT_GBRP14;
756 if (f->transparency) f->avctx->pix_fmt = AV_PIX_FMT_RGB32;
757 else f->avctx->pix_fmt = AV_PIX_FMT_0RGB32;
759 av_log(f->avctx, AV_LOG_ERROR, "colorspace not supported\n");
760 return AVERROR(ENOSYS);
762 if (f->avctx->pix_fmt == AV_PIX_FMT_NONE) {
763 av_log(f->avctx, AV_LOG_ERROR, "format not supported\n");
764 return AVERROR(ENOSYS);
767 ff_dlog(f->avctx, "%d %d %d\n",
768 f->chroma_h_shift, f->chroma_v_shift, f->avctx->pix_fmt);
769 if (f->version < 2) {
770 context_count = read_quant_tables(c, f->quant_table);
771 if (context_count < 0) {
772 av_log(f->avctx, AV_LOG_ERROR, "read_quant_table error\n");
773 return AVERROR_INVALIDDATA;
775 } else if (f->version < 3) {
776 f->slice_count = get_symbol(c, state, 0);
778 const uint8_t *p = c->bytestream_end;
779 for (f->slice_count = 0;
780 f->slice_count < MAX_SLICES && 3 < p - c->bytestream_start;
782 int trailer = 3 + 5*!!f->ec;
783 int size = AV_RB24(p-trailer);
784 if (size + trailer > p - c->bytestream_start)
789 if (f->slice_count > (unsigned)MAX_SLICES || f->slice_count <= 0) {
790 av_log(f->avctx, AV_LOG_ERROR, "slice count %d is invalid\n", f->slice_count);
791 return AVERROR_INVALIDDATA;
794 for (j = 0; j < f->slice_count; j++) {
795 FFV1Context *fs = f->slice_context[j];
797 fs->packed_at_lsb = f->packed_at_lsb;
799 fs->slice_damaged = 0;
801 if (f->version == 2) {
802 fs->slice_x = get_symbol(c, state, 0) * f->width ;
803 fs->slice_y = get_symbol(c, state, 0) * f->height;
804 fs->slice_width = (get_symbol(c, state, 0) + 1) * f->width + fs->slice_x;
805 fs->slice_height = (get_symbol(c, state, 0) + 1) * f->height + fs->slice_y;
807 fs->slice_x /= f->num_h_slices;
808 fs->slice_y /= f->num_v_slices;
809 fs->slice_width = fs->slice_width / f->num_h_slices - fs->slice_x;
810 fs->slice_height = fs->slice_height / f->num_v_slices - fs->slice_y;
811 if ((unsigned)fs->slice_width > f->width ||
812 (unsigned)fs->slice_height > f->height)
813 return AVERROR_INVALIDDATA;
814 if ( (unsigned)fs->slice_x + (uint64_t)fs->slice_width > f->width
815 || (unsigned)fs->slice_y + (uint64_t)fs->slice_height > f->height)
816 return AVERROR_INVALIDDATA;
819 for (i = 0; i < f->plane_count; i++) {
820 PlaneContext *const p = &fs->plane[i];
822 if (f->version == 2) {
823 int idx = get_symbol(c, state, 0);
824 if (idx > (unsigned)f->quant_table_count) {
825 av_log(f->avctx, AV_LOG_ERROR,
826 "quant_table_index out of range\n");
827 return AVERROR_INVALIDDATA;
829 p->quant_table_index = idx;
830 memcpy(p->quant_table, f->quant_tables[idx],
831 sizeof(p->quant_table));
832 context_count = f->context_count[idx];
834 memcpy(p->quant_table, f->quant_table, sizeof(p->quant_table));
837 if (f->version <= 2) {
838 av_assert0(context_count >= 0);
839 if (p->context_count < context_count) {
841 av_freep(&p->vlc_state);
843 p->context_count = context_count;
850 static av_cold int decode_init(AVCodecContext *avctx)
852 FFV1Context *f = avctx->priv_data;
855 if ((ret = ffv1_common_init(avctx)) < 0)
858 if (avctx->extradata && (ret = read_extra_header(f)) < 0)
861 if ((ret = ffv1_init_slice_contexts(f)) < 0)
864 avctx->internal->allocate_progress = 1;
869 static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
871 uint8_t *buf = avpkt->data;
872 int buf_size = avpkt->size;
873 FFV1Context *f = avctx->priv_data;
874 RangeCoder *const c = &f->slice_context[0]->c;
876 uint8_t keystate = 128;
880 if (f->last_picture.f)
881 ff_thread_release_buffer(avctx, &f->last_picture);
882 FFSWAP(ThreadFrame, f->picture, f->last_picture);
884 f->cur = p = f->picture.f;
886 if (f->version < 3 && avctx->field_order > AV_FIELD_PROGRESSIVE) {
887 /* we have interlaced material flagged in container */
888 p->interlaced_frame = 1;
889 if (avctx->field_order == AV_FIELD_TT || avctx->field_order == AV_FIELD_TB)
890 p->top_field_first = 1;
894 ff_init_range_decoder(c, buf, buf_size);
895 ff_build_rac_states(c, 0.05 * (1LL << 32), 256 - 8);
897 p->pict_type = AV_PICTURE_TYPE_I; //FIXME I vs. P
898 if (get_rac(c, &keystate)) {
901 if ((ret = read_header(f)) < 0)
905 if (!f->key_frame_ok) {
906 av_log(avctx, AV_LOG_ERROR,
907 "Cannot decode non-keyframe without valid keyframe\n");
908 return AVERROR_INVALIDDATA;
913 if ((ret = ff_thread_get_buffer(avctx, &f->picture, AV_GET_BUFFER_FLAG_REF)) < 0)
916 if (avctx->debug & FF_DEBUG_PICT_INFO)
917 av_log(avctx, AV_LOG_DEBUG, "ver:%d keyframe:%d coder:%d ec:%d slices:%d bps:%d\n",
918 f->version, p->key_frame, f->ac, f->ec, f->slice_count, f->avctx->bits_per_raw_sample);
920 ff_thread_finish_setup(avctx);
922 buf_p = buf + buf_size;
923 for (i = f->slice_count - 1; i >= 0; i--) {
924 FFV1Context *fs = f->slice_context[i];
925 int trailer = 3 + 5*!!f->ec;
928 if (i || f->version > 2) v = AV_RB24(buf_p-trailer) + trailer;
929 else v = buf_p - c->bytestream_start;
930 if (buf_p - c->bytestream_start < v) {
931 av_log(avctx, AV_LOG_ERROR, "Slice pointer chain broken\n");
932 return AVERROR_INVALIDDATA;
937 unsigned crc = av_crc(av_crc_get_table(AV_CRC_32_IEEE), 0, buf_p, v);
939 int64_t ts = avpkt->pts != AV_NOPTS_VALUE ? avpkt->pts : avpkt->dts;
940 av_log(f->avctx, AV_LOG_ERROR, "CRC mismatch %X!", crc);
941 if (ts != AV_NOPTS_VALUE && avctx->pkt_timebase.num) {
942 av_log(f->avctx, AV_LOG_ERROR, "at %f seconds\n", ts*av_q2d(avctx->pkt_timebase));
943 } else if (ts != AV_NOPTS_VALUE) {
944 av_log(f->avctx, AV_LOG_ERROR, "at %"PRId64"\n", ts);
946 av_log(f->avctx, AV_LOG_ERROR, "\n");
948 fs->slice_damaged = 1;
953 ff_init_range_decoder(&fs->c, buf_p, v);
955 fs->c.bytestream_end = buf_p + v;
961 avctx->execute(avctx,
963 &f->slice_context[0],
968 for (i = f->slice_count - 1; i >= 0; i--) {
969 FFV1Context *fs = f->slice_context[i];
971 if (fs->slice_damaged && f->last_picture.f->data[0]) {
972 const uint8_t *src[4];
974 ff_thread_await_progress(&f->last_picture, INT_MAX, 0);
975 for (j = 0; j < 4; j++) {
976 int sh = (j == 1 || j == 2) ? f->chroma_h_shift : 0;
977 int sv = (j == 1 || j == 2) ? f->chroma_v_shift : 0;
978 dst[j] = p->data[j] + p->linesize[j] *
979 (fs->slice_y >> sv) + (fs->slice_x >> sh);
980 src[j] = f->last_picture.f->data[j] + f->last_picture.f->linesize[j] *
981 (fs->slice_y >> sv) + (fs->slice_x >> sh);
983 av_image_copy(dst, p->linesize, src,
984 f->last_picture.f->linesize,
990 ff_thread_report_progress(&f->picture, INT_MAX, 0);
994 if (f->last_picture.f)
995 ff_thread_release_buffer(avctx, &f->last_picture);
997 if ((ret = av_frame_ref(data, f->picture.f)) < 0)
1005 static int init_thread_copy(AVCodecContext *avctx)
1007 FFV1Context *f = avctx->priv_data;
1010 f->picture.f = NULL;
1011 f->last_picture.f = NULL;
1012 f->sample_buffer = NULL;
1015 for (i = 0; i < f->quant_table_count; i++) {
1016 av_assert0(f->version > 1);
1017 f->initial_states[i] = av_memdup(f->initial_states[i],
1018 f->context_count[i] * sizeof(*f->initial_states[i]));
1021 f->picture.f = av_frame_alloc();
1022 f->last_picture.f = av_frame_alloc();
1024 if ((ret = ffv1_init_slice_contexts(f)) < 0)
1030 static void copy_fields(FFV1Context *fsdst, FFV1Context *fssrc, FFV1Context *fsrc)
1032 fsdst->version = fsrc->version;
1033 fsdst->micro_version = fsrc->micro_version;
1034 fsdst->chroma_planes = fsrc->chroma_planes;
1035 fsdst->chroma_h_shift = fsrc->chroma_h_shift;
1036 fsdst->chroma_v_shift = fsrc->chroma_v_shift;
1037 fsdst->transparency = fsrc->transparency;
1038 fsdst->plane_count = fsrc->plane_count;
1039 fsdst->ac = fsrc->ac;
1040 fsdst->colorspace = fsrc->colorspace;
1042 fsdst->ec = fsrc->ec;
1043 fsdst->intra = fsrc->intra;
1044 fsdst->slice_damaged = fssrc->slice_damaged;
1045 fsdst->key_frame_ok = fsrc->key_frame_ok;
1047 fsdst->bits_per_raw_sample = fsrc->bits_per_raw_sample;
1048 fsdst->packed_at_lsb = fsrc->packed_at_lsb;
1049 fsdst->slice_count = fsrc->slice_count;
1050 if (fsrc->version<3){
1051 fsdst->slice_x = fssrc->slice_x;
1052 fsdst->slice_y = fssrc->slice_y;
1053 fsdst->slice_width = fssrc->slice_width;
1054 fsdst->slice_height = fssrc->slice_height;
1058 static int update_thread_context(AVCodecContext *dst, const AVCodecContext *src)
1060 FFV1Context *fsrc = src->priv_data;
1061 FFV1Context *fdst = dst->priv_data;
1068 ThreadFrame picture = fdst->picture, last_picture = fdst->last_picture;
1069 uint8_t (*initial_states[MAX_QUANT_TABLES])[32];
1070 struct FFV1Context *slice_context[MAX_SLICES];
1071 memcpy(initial_states, fdst->initial_states, sizeof(fdst->initial_states));
1072 memcpy(slice_context, fdst->slice_context , sizeof(fdst->slice_context));
1074 memcpy(fdst, fsrc, sizeof(*fdst));
1075 memcpy(fdst->initial_states, initial_states, sizeof(fdst->initial_states));
1076 memcpy(fdst->slice_context, slice_context , sizeof(fdst->slice_context));
1077 fdst->picture = picture;
1078 fdst->last_picture = last_picture;
1079 for (i = 0; i<fdst->num_h_slices * fdst->num_v_slices; i++) {
1080 FFV1Context *fssrc = fsrc->slice_context[i];
1081 FFV1Context *fsdst = fdst->slice_context[i];
1082 copy_fields(fsdst, fssrc, fsrc);
1084 av_assert0(!fdst->plane[0].state);
1085 av_assert0(!fdst->sample_buffer);
1088 av_assert1(fdst->slice_count == fsrc->slice_count);
1091 ff_thread_release_buffer(dst, &fdst->picture);
1092 if (fsrc->picture.f->data[0]) {
1093 if ((ret = ff_thread_ref_frame(&fdst->picture, &fsrc->picture)) < 0)
1102 AVCodec ff_ffv1_decoder = {
1104 .long_name = NULL_IF_CONFIG_SMALL("FFmpeg video codec #1"),
1105 .type = AVMEDIA_TYPE_VIDEO,
1106 .id = AV_CODEC_ID_FFV1,
1107 .priv_data_size = sizeof(FFV1Context),
1108 .init = decode_init,
1109 .close = ffv1_close,
1110 .decode = decode_frame,
1111 .init_thread_copy = ONLY_IF_THREADS_ENABLED(init_thread_copy),
1112 .update_thread_context = ONLY_IF_THREADS_ENABLED(update_thread_context),
1113 .capabilities = CODEC_CAP_DR1 /*| CODEC_CAP_DRAW_HORIZ_BAND*/ |
1114 CODEC_CAP_FRAME_THREADS | CODEC_CAP_SLICE_THREADS,