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))
51 while (get_rac(c, state + 1 + FFMIN(e, 9))) { // 1..10
54 return AVERROR_INVALIDDATA;
58 for (i = e - 1; i >= 0; i--)
59 a += a + get_rac(c, state + 22 + FFMIN(i, 9)); // 22..31
61 e = -(is_signed && get_rac(c, state + 11 + FFMIN(e, 10))); // 11..21
66 static av_noinline int get_symbol(RangeCoder *c, uint8_t *state, int is_signed)
68 return get_symbol_inline(c, state, is_signed);
71 static inline int get_vlc_symbol(GetBitContext *gb, VlcState *const state,
78 while (i < state->error_sum) { // FIXME: optimize
83 v = get_sr_golomb(gb, k, 12, bits);
84 ff_dlog(NULL, "v:%d bias:%d error:%d drift:%d count:%d k:%d",
85 v, state->bias, state->error_sum, state->drift, state->count, k);
87 v ^= ((2 * state->drift + state->count) >> 31);
89 ret = fold(v + state->bias, bits);
91 update_vlc_state(state, v);
96 static int is_input_end(FFV1Context *s)
98 if (s->ac != AC_GOLOMB_RICE) {
99 RangeCoder *const c = &s->c;
100 if (c->overread > MAX_OVERREAD)
101 return AVERROR_INVALIDDATA;
103 if (get_bits_left(&s->gb) < 1)
104 return AVERROR_INVALIDDATA;
110 #define RENAME(name) name
111 #include "ffv1dec_template.c"
116 #define RENAME(name) name ## 32
117 #include "ffv1dec_template.c"
119 static int decode_plane(FFV1Context *s, uint8_t *src,
120 int w, int h, int stride, int plane_index,
125 sample[0] = s->sample_buffer + 3;
126 sample[1] = s->sample_buffer + w + 6 + 3;
130 memset(s->sample_buffer, 0, 2 * (w + 6) * sizeof(*s->sample_buffer));
132 for (y = 0; y < h; y++) {
133 int16_t *temp = sample[0]; // FIXME: try a normal buffer
135 sample[0] = sample[1];
138 sample[1][-1] = sample[0][0];
139 sample[0][w] = sample[0][w - 1];
142 if (s->avctx->bits_per_raw_sample <= 8) {
143 int ret = decode_line(s, w, sample, plane_index, 8);
146 for (x = 0; x < w; x++)
147 src[x*pixel_stride + stride * y] = sample[1][x];
149 int ret = decode_line(s, w, sample, plane_index, s->avctx->bits_per_raw_sample);
152 if (s->packed_at_lsb) {
153 for (x = 0; x < w; x++) {
154 ((uint16_t*)(src + stride*y))[x*pixel_stride] = sample[1][x];
157 for (x = 0; x < w; x++) {
158 ((uint16_t*)(src + stride*y))[x*pixel_stride] = sample[1][x] << (16 - s->avctx->bits_per_raw_sample) | ((uint16_t **)sample)[1][x] >> (2 * s->avctx->bits_per_raw_sample - 16);
162 // STOP_TIMER("decode-line") }
167 static int decode_slice_header(FFV1Context *f, FFV1Context *fs)
169 RangeCoder *c = &fs->c;
170 uint8_t state[CONTEXT_SIZE];
171 unsigned ps, i, context_count;
172 memset(state, 128, sizeof(state));
174 av_assert0(f->version > 2);
176 fs->slice_x = get_symbol(c, state, 0) * f->width ;
177 fs->slice_y = get_symbol(c, state, 0) * f->height;
178 fs->slice_width = (get_symbol(c, state, 0) + 1) * f->width + fs->slice_x;
179 fs->slice_height = (get_symbol(c, state, 0) + 1) * f->height + fs->slice_y;
181 fs->slice_x /= f->num_h_slices;
182 fs->slice_y /= f->num_v_slices;
183 fs->slice_width = fs->slice_width /f->num_h_slices - fs->slice_x;
184 fs->slice_height = fs->slice_height/f->num_v_slices - fs->slice_y;
185 if ((unsigned)fs->slice_width > f->width || (unsigned)fs->slice_height > f->height)
187 if ( (unsigned)fs->slice_x + (uint64_t)fs->slice_width > f->width
188 || (unsigned)fs->slice_y + (uint64_t)fs->slice_height > f->height)
191 for (i = 0; i < f->plane_count; i++) {
192 PlaneContext * const p = &fs->plane[i];
193 int idx = get_symbol(c, state, 0);
194 if (idx >= (unsigned)f->quant_table_count) {
195 av_log(f->avctx, AV_LOG_ERROR, "quant_table_index out of range\n");
198 p->quant_table_index = idx;
199 memcpy(p->quant_table, f->quant_tables[idx], sizeof(p->quant_table));
200 context_count = f->context_count[idx];
202 if (p->context_count < context_count) {
204 av_freep(&p->vlc_state);
206 p->context_count = context_count;
209 ps = get_symbol(c, state, 0);
211 f->cur->interlaced_frame = 1;
212 f->cur->top_field_first = 1;
213 } else if (ps == 2) {
214 f->cur->interlaced_frame = 1;
215 f->cur->top_field_first = 0;
216 } else if (ps == 3) {
217 f->cur->interlaced_frame = 0;
219 f->cur->sample_aspect_ratio.num = get_symbol(c, state, 0);
220 f->cur->sample_aspect_ratio.den = get_symbol(c, state, 0);
222 if (av_image_check_sar(f->width, f->height,
223 f->cur->sample_aspect_ratio) < 0) {
224 av_log(f->avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
225 f->cur->sample_aspect_ratio.num,
226 f->cur->sample_aspect_ratio.den);
227 f->cur->sample_aspect_ratio = (AVRational){ 0, 1 };
230 if (fs->version > 3) {
231 fs->slice_reset_contexts = get_rac(c, state);
232 fs->slice_coding_mode = get_symbol(c, state, 0);
233 if (fs->slice_coding_mode != 1) {
234 fs->slice_rct_by_coef = get_symbol(c, state, 0);
235 fs->slice_rct_ry_coef = get_symbol(c, state, 0);
236 if ((uint64_t)fs->slice_rct_by_coef + (uint64_t)fs->slice_rct_ry_coef > 4) {
237 av_log(f->avctx, AV_LOG_ERROR, "slice_rct_y_coef out of range\n");
238 return AVERROR_INVALIDDATA;
246 static int decode_slice(AVCodecContext *c, void *arg)
248 FFV1Context *fs = *(void **)arg;
249 FFV1Context *f = fs->avctx->priv_data;
250 int width, height, x, y, ret;
251 const int ps = av_pix_fmt_desc_get(c->pix_fmt)->comp[0].step;
252 AVFrame * const p = f->cur;
255 for( si=0; fs != f->slice_context[si]; si ++)
258 if(f->fsrc && !p->key_frame)
259 ff_thread_await_progress(&f->last_picture, si, 0);
261 if(f->fsrc && !p->key_frame) {
262 FFV1Context *fssrc = f->fsrc->slice_context[si];
263 FFV1Context *fsdst = f->slice_context[si];
264 av_assert1(fsdst->plane_count == fssrc->plane_count);
265 av_assert1(fsdst == fs);
268 fsdst->slice_damaged |= fssrc->slice_damaged;
270 for (i = 0; i < f->plane_count; i++) {
271 PlaneContext *psrc = &fssrc->plane[i];
272 PlaneContext *pdst = &fsdst->plane[i];
274 av_free(pdst->state);
275 av_free(pdst->vlc_state);
276 memcpy(pdst, psrc, sizeof(*pdst));
278 pdst->vlc_state = NULL;
281 pdst->state = av_malloc_array(CONTEXT_SIZE, psrc->context_count);
282 memcpy(pdst->state, psrc->state, CONTEXT_SIZE * psrc->context_count);
284 pdst->vlc_state = av_malloc_array(sizeof(*pdst->vlc_state), psrc->context_count);
285 memcpy(pdst->vlc_state, psrc->vlc_state, sizeof(*pdst->vlc_state) * psrc->context_count);
290 fs->slice_rct_by_coef = 1;
291 fs->slice_rct_ry_coef = 1;
293 if (f->version > 2) {
294 if (ff_ffv1_init_slice_state(f, fs) < 0)
295 return AVERROR(ENOMEM);
296 if (decode_slice_header(f, fs) < 0) {
297 fs->slice_x = fs->slice_y = fs->slice_height = fs->slice_width = 0;
298 fs->slice_damaged = 1;
299 return AVERROR_INVALIDDATA;
302 if ((ret = ff_ffv1_init_slice_state(f, fs)) < 0)
304 if (f->cur->key_frame || fs->slice_reset_contexts)
305 ff_ffv1_clear_slice_state(f, fs);
307 width = fs->slice_width;
308 height = fs->slice_height;
312 if (fs->ac == AC_GOLOMB_RICE) {
313 if (f->version == 3 && f->micro_version > 1 || f->version > 3)
314 get_rac(&fs->c, (uint8_t[]) { 129 });
315 fs->ac_byte_count = f->version > 2 || (!x && !y) ? fs->c.bytestream - fs->c.bytestream_start - 1 : 0;
316 init_get_bits(&fs->gb,
317 fs->c.bytestream_start + fs->ac_byte_count,
318 (fs->c.bytestream_end - fs->c.bytestream_start - fs->ac_byte_count) * 8);
321 av_assert1(width && height);
322 if (f->colorspace == 0 && (f->chroma_planes || !fs->transparency)) {
323 const int chroma_width = AV_CEIL_RSHIFT(width, f->chroma_h_shift);
324 const int chroma_height = AV_CEIL_RSHIFT(height, f->chroma_v_shift);
325 const int cx = x >> f->chroma_h_shift;
326 const int cy = y >> f->chroma_v_shift;
327 decode_plane(fs, p->data[0] + ps*x + y*p->linesize[0], width, height, p->linesize[0], 0, 1);
329 if (f->chroma_planes) {
330 decode_plane(fs, p->data[1] + ps*cx+cy*p->linesize[1], chroma_width, chroma_height, p->linesize[1], 1, 1);
331 decode_plane(fs, p->data[2] + ps*cx+cy*p->linesize[2], chroma_width, chroma_height, p->linesize[2], 1, 1);
333 if (fs->transparency)
334 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);
335 } else if (f->colorspace == 0) {
336 decode_plane(fs, p->data[0] + ps*x + y*p->linesize[0] , width, height, p->linesize[0], 0, 2);
337 decode_plane(fs, p->data[0] + ps*x + y*p->linesize[0] + 1, width, height, p->linesize[0], 1, 2);
338 } else if (f->use32bit) {
339 uint8_t *planes[4] = { p->data[0] + ps * x + y * p->linesize[0],
340 p->data[1] + ps * x + y * p->linesize[1],
341 p->data[2] + ps * x + y * p->linesize[2],
342 p->data[3] + ps * x + y * p->linesize[3] };
343 decode_rgb_frame32(fs, planes, width, height, p->linesize);
345 uint8_t *planes[4] = { p->data[0] + ps * x + y * p->linesize[0],
346 p->data[1] + ps * x + y * p->linesize[1],
347 p->data[2] + ps * x + y * p->linesize[2],
348 p->data[3] + ps * x + y * p->linesize[3] };
349 decode_rgb_frame(fs, planes, width, height, p->linesize);
351 if (fs->ac != AC_GOLOMB_RICE && f->version > 2) {
353 get_rac(&fs->c, (uint8_t[]) { 129 });
354 v = fs->c.bytestream_end - fs->c.bytestream - 2 - 5*f->ec;
356 av_log(f->avctx, AV_LOG_ERROR, "bytestream end mismatching by %d\n", v);
357 fs->slice_damaged = 1;
363 ff_thread_report_progress(&f->picture, si, 0);
368 static int read_quant_table(RangeCoder *c, int16_t *quant_table, int scale)
372 uint8_t state[CONTEXT_SIZE];
374 memset(state, 128, sizeof(state));
376 for (v = 0; i < 128; v++) {
377 unsigned len = get_symbol(c, state, 0) + 1U;
379 if (len > 128 - i || !len)
380 return AVERROR_INVALIDDATA;
383 quant_table[i] = scale * v;
388 for (i = 1; i < 128; i++)
389 quant_table[256 - i] = -quant_table[i];
390 quant_table[128] = -quant_table[127];
395 static int read_quant_tables(RangeCoder *c,
396 int16_t quant_table[MAX_CONTEXT_INPUTS][256])
399 int context_count = 1;
401 for (i = 0; i < 5; i++) {
402 int ret = read_quant_table(c, quant_table[i], context_count);
405 context_count *= ret;
406 if (context_count > 32768U) {
407 return AVERROR_INVALIDDATA;
410 return (context_count + 1) / 2;
413 static int read_extra_header(FFV1Context *f)
415 RangeCoder *const c = &f->c;
416 uint8_t state[CONTEXT_SIZE];
418 uint8_t state2[32][CONTEXT_SIZE];
421 memset(state2, 128, sizeof(state2));
422 memset(state, 128, sizeof(state));
424 ff_init_range_decoder(c, f->avctx->extradata, f->avctx->extradata_size);
425 ff_build_rac_states(c, 0.05 * (1LL << 32), 256 - 8);
427 f->version = get_symbol(c, state, 0);
428 if (f->version < 2) {
429 av_log(f->avctx, AV_LOG_ERROR, "Invalid version in global header\n");
430 return AVERROR_INVALIDDATA;
432 if (f->version > 2) {
433 c->bytestream_end -= 4;
434 f->micro_version = get_symbol(c, state, 0);
435 if (f->micro_version < 0)
436 return AVERROR_INVALIDDATA;
438 f->ac = get_symbol(c, state, 0);
440 if (f->ac == AC_RANGE_CUSTOM_TAB) {
441 for (i = 1; i < 256; i++)
442 f->state_transition[i] = get_symbol(c, state, 1) + c->one_state[i];
445 f->colorspace = get_symbol(c, state, 0); //YUV cs type
446 f->avctx->bits_per_raw_sample = get_symbol(c, state, 0);
447 f->chroma_planes = get_rac(c, state);
448 f->chroma_h_shift = get_symbol(c, state, 0);
449 f->chroma_v_shift = get_symbol(c, state, 0);
450 f->transparency = get_rac(c, state);
451 f->plane_count = 1 + (f->chroma_planes || f->version<4) + f->transparency;
452 f->num_h_slices = 1 + get_symbol(c, state, 0);
453 f->num_v_slices = 1 + get_symbol(c, state, 0);
455 if (f->chroma_h_shift > 4U || f->chroma_v_shift > 4U) {
456 av_log(f->avctx, AV_LOG_ERROR, "chroma shift parameters %d %d are invalid\n",
457 f->chroma_h_shift, f->chroma_v_shift);
458 return AVERROR_INVALIDDATA;
461 if (f->num_h_slices > (unsigned)f->width || !f->num_h_slices ||
462 f->num_v_slices > (unsigned)f->height || !f->num_v_slices
464 av_log(f->avctx, AV_LOG_ERROR, "slice count invalid\n");
465 return AVERROR_INVALIDDATA;
468 f->quant_table_count = get_symbol(c, state, 0);
469 if (f->quant_table_count > (unsigned)MAX_QUANT_TABLES || !f->quant_table_count) {
470 av_log(f->avctx, AV_LOG_ERROR, "quant table count %d is invalid\n", f->quant_table_count);
471 f->quant_table_count = 0;
472 return AVERROR_INVALIDDATA;
475 for (i = 0; i < f->quant_table_count; i++) {
476 f->context_count[i] = read_quant_tables(c, f->quant_tables[i]);
477 if (f->context_count[i] < 0) {
478 av_log(f->avctx, AV_LOG_ERROR, "read_quant_table error\n");
479 return AVERROR_INVALIDDATA;
482 if ((ret = ff_ffv1_allocate_initial_states(f)) < 0)
485 for (i = 0; i < f->quant_table_count; i++)
486 if (get_rac(c, state)) {
487 for (j = 0; j < f->context_count[i]; j++)
488 for (k = 0; k < CONTEXT_SIZE; k++) {
489 int pred = j ? f->initial_states[i][j - 1][k] : 128;
490 f->initial_states[i][j][k] =
491 (pred + get_symbol(c, state2[k], 1)) & 0xFF;
495 if (f->version > 2) {
496 f->ec = get_symbol(c, state, 0);
497 if (f->micro_version > 2)
498 f->intra = get_symbol(c, state, 0);
501 if (f->version > 2) {
503 v = av_crc(av_crc_get_table(AV_CRC_32_IEEE), 0,
504 f->avctx->extradata, f->avctx->extradata_size);
505 if (v || f->avctx->extradata_size < 4) {
506 av_log(f->avctx, AV_LOG_ERROR, "CRC mismatch %X!\n", v);
507 return AVERROR_INVALIDDATA;
509 crc = AV_RB32(f->avctx->extradata + f->avctx->extradata_size - 4);
512 if (f->avctx->debug & FF_DEBUG_PICT_INFO)
513 av_log(f->avctx, AV_LOG_DEBUG,
514 "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",
515 f->version, f->micro_version,
518 f->avctx->bits_per_raw_sample,
519 f->chroma_planes, f->chroma_h_shift, f->chroma_v_shift,
521 f->num_h_slices, f->num_v_slices,
522 f->quant_table_count,
530 static int read_header(FFV1Context *f)
532 uint8_t state[CONTEXT_SIZE];
533 int i, j, context_count = -1; //-1 to avoid warning
534 RangeCoder *const c = &f->slice_context[0]->c;
536 memset(state, 128, sizeof(state));
538 if (f->version < 2) {
539 int chroma_planes, chroma_h_shift, chroma_v_shift, transparency, colorspace, bits_per_raw_sample;
540 unsigned v= get_symbol(c, state, 0);
542 av_log(f->avctx, AV_LOG_ERROR, "invalid version %d in ver01 header\n", v);
543 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 colorspace = get_symbol(c, state, 0); //YUV cs type
554 bits_per_raw_sample = f->version > 0 ? get_symbol(c, state, 0) : f->avctx->bits_per_raw_sample;
555 chroma_planes = get_rac(c, state);
556 chroma_h_shift = get_symbol(c, state, 0);
557 chroma_v_shift = get_symbol(c, state, 0);
558 transparency = get_rac(c, state);
559 if (colorspace == 0 && f->avctx->skip_alpha)
562 if (f->plane_count) {
563 if (colorspace != f->colorspace ||
564 bits_per_raw_sample != f->avctx->bits_per_raw_sample ||
565 chroma_planes != f->chroma_planes ||
566 chroma_h_shift != f->chroma_h_shift ||
567 chroma_v_shift != f->chroma_v_shift ||
568 transparency != f->transparency) {
569 av_log(f->avctx, AV_LOG_ERROR, "Invalid change of global parameters\n");
570 return AVERROR_INVALIDDATA;
574 if (chroma_h_shift > 4U || chroma_v_shift > 4U) {
575 av_log(f->avctx, AV_LOG_ERROR, "chroma shift parameters %d %d are invalid\n",
576 chroma_h_shift, chroma_v_shift);
577 return AVERROR_INVALIDDATA;
580 f->colorspace = colorspace;
581 f->avctx->bits_per_raw_sample = bits_per_raw_sample;
582 f->chroma_planes = chroma_planes;
583 f->chroma_h_shift = chroma_h_shift;
584 f->chroma_v_shift = chroma_v_shift;
585 f->transparency = transparency;
587 f->plane_count = 2 + f->transparency;
590 if (f->colorspace == 0) {
591 if (!f->transparency && !f->chroma_planes) {
592 if (f->avctx->bits_per_raw_sample <= 8)
593 f->avctx->pix_fmt = AV_PIX_FMT_GRAY8;
594 else if (f->avctx->bits_per_raw_sample == 9) {
595 f->packed_at_lsb = 1;
596 f->avctx->pix_fmt = AV_PIX_FMT_GRAY9;
597 } else if (f->avctx->bits_per_raw_sample == 10) {
598 f->packed_at_lsb = 1;
599 f->avctx->pix_fmt = AV_PIX_FMT_GRAY10;
600 } else if (f->avctx->bits_per_raw_sample == 12) {
601 f->packed_at_lsb = 1;
602 f->avctx->pix_fmt = AV_PIX_FMT_GRAY12;
603 } else if (f->avctx->bits_per_raw_sample == 16) {
604 f->packed_at_lsb = 1;
605 f->avctx->pix_fmt = AV_PIX_FMT_GRAY16;
606 } else if (f->avctx->bits_per_raw_sample < 16) {
607 f->avctx->pix_fmt = AV_PIX_FMT_GRAY16;
609 return AVERROR(ENOSYS);
610 } else if (f->transparency && !f->chroma_planes) {
611 if (f->avctx->bits_per_raw_sample <= 8)
612 f->avctx->pix_fmt = AV_PIX_FMT_YA8;
614 return AVERROR(ENOSYS);
615 } else if (f->avctx->bits_per_raw_sample<=8 && !f->transparency) {
616 switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
617 case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P; break;
618 case 0x01: f->avctx->pix_fmt = AV_PIX_FMT_YUV440P; break;
619 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P; break;
620 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P; break;
621 case 0x20: f->avctx->pix_fmt = AV_PIX_FMT_YUV411P; break;
622 case 0x22: f->avctx->pix_fmt = AV_PIX_FMT_YUV410P; break;
624 } else if (f->avctx->bits_per_raw_sample <= 8 && f->transparency) {
625 switch(16*f->chroma_h_shift + f->chroma_v_shift) {
626 case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P; break;
627 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P; break;
628 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P; break;
630 } else if (f->avctx->bits_per_raw_sample == 9 && !f->transparency) {
631 f->packed_at_lsb = 1;
632 switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
633 case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P9; break;
634 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P9; break;
635 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P9; break;
637 } else if (f->avctx->bits_per_raw_sample == 9 && f->transparency) {
638 f->packed_at_lsb = 1;
639 switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
640 case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P9; break;
641 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P9; break;
642 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P9; break;
644 } else if (f->avctx->bits_per_raw_sample == 10 && !f->transparency) {
645 f->packed_at_lsb = 1;
646 switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
647 case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P10; break;
648 case 0x01: f->avctx->pix_fmt = AV_PIX_FMT_YUV440P10; break;
649 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P10; break;
650 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P10; break;
652 } else if (f->avctx->bits_per_raw_sample == 10 && f->transparency) {
653 f->packed_at_lsb = 1;
654 switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
655 case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P10; break;
656 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P10; break;
657 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P10; break;
659 } else if (f->avctx->bits_per_raw_sample == 12 && !f->transparency) {
660 f->packed_at_lsb = 1;
661 switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
662 case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P12; break;
663 case 0x01: f->avctx->pix_fmt = AV_PIX_FMT_YUV440P12; break;
664 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P12; break;
665 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P12; break;
667 } else if (f->avctx->bits_per_raw_sample == 14 && !f->transparency) {
668 f->packed_at_lsb = 1;
669 switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
670 case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P14; break;
671 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P14; break;
672 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P14; break;
674 } else if (f->avctx->bits_per_raw_sample == 16 && !f->transparency){
675 f->packed_at_lsb = 1;
676 switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
677 case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P16; break;
678 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P16; break;
679 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P16; break;
681 } else if (f->avctx->bits_per_raw_sample == 16 && f->transparency){
682 f->packed_at_lsb = 1;
683 switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
684 case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P16; break;
685 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P16; break;
686 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P16; break;
689 } else if (f->colorspace == 1) {
690 if (f->chroma_h_shift || f->chroma_v_shift) {
691 av_log(f->avctx, AV_LOG_ERROR,
692 "chroma subsampling not supported in this colorspace\n");
693 return AVERROR(ENOSYS);
695 if ( f->avctx->bits_per_raw_sample <= 8 && !f->transparency)
696 f->avctx->pix_fmt = AV_PIX_FMT_0RGB32;
697 else if (f->avctx->bits_per_raw_sample <= 8 && f->transparency)
698 f->avctx->pix_fmt = AV_PIX_FMT_RGB32;
699 else if (f->avctx->bits_per_raw_sample == 9 && !f->transparency)
700 f->avctx->pix_fmt = AV_PIX_FMT_GBRP9;
701 else if (f->avctx->bits_per_raw_sample == 10 && !f->transparency)
702 f->avctx->pix_fmt = AV_PIX_FMT_GBRP10;
703 else if (f->avctx->bits_per_raw_sample == 10 && f->transparency)
704 f->avctx->pix_fmt = AV_PIX_FMT_GBRAP10;
705 else if (f->avctx->bits_per_raw_sample == 12 && !f->transparency)
706 f->avctx->pix_fmt = AV_PIX_FMT_GBRP12;
707 else if (f->avctx->bits_per_raw_sample == 12 && f->transparency)
708 f->avctx->pix_fmt = AV_PIX_FMT_GBRAP12;
709 else if (f->avctx->bits_per_raw_sample == 14 && !f->transparency)
710 f->avctx->pix_fmt = AV_PIX_FMT_GBRP14;
711 else if (f->avctx->bits_per_raw_sample == 16 && !f->transparency) {
712 f->avctx->pix_fmt = AV_PIX_FMT_GBRP16;
715 else if (f->avctx->bits_per_raw_sample == 16 && f->transparency) {
716 f->avctx->pix_fmt = AV_PIX_FMT_GBRAP16;
720 av_log(f->avctx, AV_LOG_ERROR, "colorspace not supported\n");
721 return AVERROR(ENOSYS);
723 if (f->avctx->pix_fmt == AV_PIX_FMT_NONE) {
724 av_log(f->avctx, AV_LOG_ERROR, "format not supported\n");
725 return AVERROR(ENOSYS);
728 ff_dlog(f->avctx, "%d %d %d\n",
729 f->chroma_h_shift, f->chroma_v_shift, f->avctx->pix_fmt);
730 if (f->version < 2) {
731 context_count = read_quant_tables(c, f->quant_table);
732 if (context_count < 0) {
733 av_log(f->avctx, AV_LOG_ERROR, "read_quant_table error\n");
734 return AVERROR_INVALIDDATA;
736 f->slice_count = f->max_slice_count;
737 } else if (f->version < 3) {
738 f->slice_count = get_symbol(c, state, 0);
740 const uint8_t *p = c->bytestream_end;
741 for (f->slice_count = 0;
742 f->slice_count < MAX_SLICES && 3 + 5*!!f->ec < p - c->bytestream_start;
744 int trailer = 3 + 5*!!f->ec;
745 int size = AV_RB24(p-trailer);
746 if (size + trailer > p - c->bytestream_start)
751 if (f->slice_count > (unsigned)MAX_SLICES || f->slice_count <= 0 || f->slice_count > f->max_slice_count) {
752 av_log(f->avctx, AV_LOG_ERROR, "slice count %d is invalid (max=%d)\n", f->slice_count, f->max_slice_count);
753 return AVERROR_INVALIDDATA;
756 for (j = 0; j < f->slice_count; j++) {
757 FFV1Context *fs = f->slice_context[j];
759 fs->packed_at_lsb = f->packed_at_lsb;
761 fs->slice_damaged = 0;
763 if (f->version == 2) {
764 fs->slice_x = get_symbol(c, state, 0) * f->width ;
765 fs->slice_y = get_symbol(c, state, 0) * f->height;
766 fs->slice_width = (get_symbol(c, state, 0) + 1) * f->width + fs->slice_x;
767 fs->slice_height = (get_symbol(c, state, 0) + 1) * f->height + fs->slice_y;
769 fs->slice_x /= f->num_h_slices;
770 fs->slice_y /= f->num_v_slices;
771 fs->slice_width = fs->slice_width / f->num_h_slices - fs->slice_x;
772 fs->slice_height = fs->slice_height / f->num_v_slices - fs->slice_y;
773 if ((unsigned)fs->slice_width > f->width ||
774 (unsigned)fs->slice_height > f->height)
775 return AVERROR_INVALIDDATA;
776 if ( (unsigned)fs->slice_x + (uint64_t)fs->slice_width > f->width
777 || (unsigned)fs->slice_y + (uint64_t)fs->slice_height > f->height)
778 return AVERROR_INVALIDDATA;
781 for (i = 0; i < f->plane_count; i++) {
782 PlaneContext *const p = &fs->plane[i];
784 if (f->version == 2) {
785 int idx = get_symbol(c, state, 0);
786 if (idx > (unsigned)f->quant_table_count) {
787 av_log(f->avctx, AV_LOG_ERROR,
788 "quant_table_index out of range\n");
789 return AVERROR_INVALIDDATA;
791 p->quant_table_index = idx;
792 memcpy(p->quant_table, f->quant_tables[idx],
793 sizeof(p->quant_table));
794 context_count = f->context_count[idx];
796 memcpy(p->quant_table, f->quant_table, sizeof(p->quant_table));
799 if (f->version <= 2) {
800 av_assert0(context_count >= 0);
801 if (p->context_count < context_count) {
803 av_freep(&p->vlc_state);
805 p->context_count = context_count;
812 static av_cold int decode_init(AVCodecContext *avctx)
814 FFV1Context *f = avctx->priv_data;
817 if ((ret = ff_ffv1_common_init(avctx)) < 0)
820 if (avctx->extradata_size > 0 && (ret = read_extra_header(f)) < 0)
823 if ((ret = ff_ffv1_init_slice_contexts(f)) < 0)
826 avctx->internal->allocate_progress = 1;
831 static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
833 uint8_t *buf = avpkt->data;
834 int buf_size = avpkt->size;
835 FFV1Context *f = avctx->priv_data;
836 RangeCoder *const c = &f->slice_context[0]->c;
838 uint8_t keystate = 128;
842 if (f->last_picture.f)
843 ff_thread_release_buffer(avctx, &f->last_picture);
844 FFSWAP(ThreadFrame, f->picture, f->last_picture);
846 f->cur = p = f->picture.f;
848 if (f->version < 3 && avctx->field_order > AV_FIELD_PROGRESSIVE) {
849 /* we have interlaced material flagged in container */
850 p->interlaced_frame = 1;
851 if (avctx->field_order == AV_FIELD_TT || avctx->field_order == AV_FIELD_TB)
852 p->top_field_first = 1;
856 ff_init_range_decoder(c, buf, buf_size);
857 ff_build_rac_states(c, 0.05 * (1LL << 32), 256 - 8);
859 p->pict_type = AV_PICTURE_TYPE_I; //FIXME I vs. P
860 if (get_rac(c, &keystate)) {
863 if ((ret = read_header(f)) < 0)
867 if (!f->key_frame_ok) {
868 av_log(avctx, AV_LOG_ERROR,
869 "Cannot decode non-keyframe without valid keyframe\n");
870 return AVERROR_INVALIDDATA;
875 if ((ret = ff_thread_get_buffer(avctx, &f->picture, AV_GET_BUFFER_FLAG_REF)) < 0)
878 if (avctx->debug & FF_DEBUG_PICT_INFO)
879 av_log(avctx, AV_LOG_DEBUG, "ver:%d keyframe:%d coder:%d ec:%d slices:%d bps:%d\n",
880 f->version, p->key_frame, f->ac, f->ec, f->slice_count, f->avctx->bits_per_raw_sample);
882 ff_thread_finish_setup(avctx);
884 buf_p = buf + buf_size;
885 for (i = f->slice_count - 1; i >= 0; i--) {
886 FFV1Context *fs = f->slice_context[i];
887 int trailer = 3 + 5*!!f->ec;
890 if (i || f->version > 2) v = AV_RB24(buf_p-trailer) + trailer;
891 else v = buf_p - c->bytestream_start;
892 if (buf_p - c->bytestream_start < v) {
893 av_log(avctx, AV_LOG_ERROR, "Slice pointer chain broken\n");
894 ff_thread_report_progress(&f->picture, INT_MAX, 0);
895 return AVERROR_INVALIDDATA;
900 unsigned crc = av_crc(av_crc_get_table(AV_CRC_32_IEEE), 0, buf_p, v);
902 int64_t ts = avpkt->pts != AV_NOPTS_VALUE ? avpkt->pts : avpkt->dts;
903 av_log(f->avctx, AV_LOG_ERROR, "CRC mismatch %X!", crc);
904 if (ts != AV_NOPTS_VALUE && avctx->pkt_timebase.num) {
905 av_log(f->avctx, AV_LOG_ERROR, "at %f seconds\n", ts*av_q2d(avctx->pkt_timebase));
906 } else if (ts != AV_NOPTS_VALUE) {
907 av_log(f->avctx, AV_LOG_ERROR, "at %"PRId64"\n", ts);
909 av_log(f->avctx, AV_LOG_ERROR, "\n");
911 fs->slice_damaged = 1;
913 if (avctx->debug & FF_DEBUG_PICT_INFO) {
914 av_log(avctx, AV_LOG_DEBUG, "slice %d, CRC: 0x%08"PRIX32"\n", i, AV_RB32(buf_p + v - 4));
919 ff_init_range_decoder(&fs->c, buf_p, v);
921 fs->c.bytestream_end = buf_p + v;
927 avctx->execute(avctx,
929 &f->slice_context[0],
934 for (i = f->slice_count - 1; i >= 0; i--) {
935 FFV1Context *fs = f->slice_context[i];
937 if (fs->slice_damaged && f->last_picture.f->data[0]) {
938 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt);
939 const uint8_t *src[4];
941 ff_thread_await_progress(&f->last_picture, INT_MAX, 0);
942 for (j = 0; j < desc->nb_components; j++) {
943 int pixshift = desc->comp[j].depth > 8;
944 int sh = (j == 1 || j == 2) ? f->chroma_h_shift : 0;
945 int sv = (j == 1 || j == 2) ? f->chroma_v_shift : 0;
946 dst[j] = p->data[j] + p->linesize[j] *
947 (fs->slice_y >> sv) + ((fs->slice_x >> sh) << pixshift);
948 src[j] = f->last_picture.f->data[j] + f->last_picture.f->linesize[j] *
949 (fs->slice_y >> sv) + ((fs->slice_x >> sh) << pixshift);
952 if (desc->flags & AV_PIX_FMT_FLAG_PAL ||
953 desc->flags & FF_PSEUDOPAL) {
955 src[1] = f->last_picture.f->data[1];
957 av_image_copy(dst, p->linesize, src,
958 f->last_picture.f->linesize,
964 ff_thread_report_progress(&f->picture, INT_MAX, 0);
968 if (f->last_picture.f)
969 ff_thread_release_buffer(avctx, &f->last_picture);
971 if ((ret = av_frame_ref(data, f->picture.f)) < 0)
980 static int init_thread_copy(AVCodecContext *avctx)
982 FFV1Context *f = avctx->priv_data;
986 f->last_picture.f = NULL;
987 f->sample_buffer = NULL;
988 f->max_slice_count = 0;
991 for (i = 0; i < f->quant_table_count; i++) {
992 av_assert0(f->version > 1);
993 f->initial_states[i] = av_memdup(f->initial_states[i],
994 f->context_count[i] * sizeof(*f->initial_states[i]));
997 f->picture.f = av_frame_alloc();
998 f->last_picture.f = av_frame_alloc();
1000 if ((ret = ff_ffv1_init_slice_contexts(f)) < 0)
1007 static void copy_fields(FFV1Context *fsdst, FFV1Context *fssrc, FFV1Context *fsrc)
1009 fsdst->version = fsrc->version;
1010 fsdst->micro_version = fsrc->micro_version;
1011 fsdst->chroma_planes = fsrc->chroma_planes;
1012 fsdst->chroma_h_shift = fsrc->chroma_h_shift;
1013 fsdst->chroma_v_shift = fsrc->chroma_v_shift;
1014 fsdst->transparency = fsrc->transparency;
1015 fsdst->plane_count = fsrc->plane_count;
1016 fsdst->ac = fsrc->ac;
1017 fsdst->colorspace = fsrc->colorspace;
1019 fsdst->ec = fsrc->ec;
1020 fsdst->intra = fsrc->intra;
1021 fsdst->slice_damaged = fssrc->slice_damaged;
1022 fsdst->key_frame_ok = fsrc->key_frame_ok;
1024 fsdst->bits_per_raw_sample = fsrc->bits_per_raw_sample;
1025 fsdst->packed_at_lsb = fsrc->packed_at_lsb;
1026 fsdst->slice_count = fsrc->slice_count;
1027 if (fsrc->version<3){
1028 fsdst->slice_x = fssrc->slice_x;
1029 fsdst->slice_y = fssrc->slice_y;
1030 fsdst->slice_width = fssrc->slice_width;
1031 fsdst->slice_height = fssrc->slice_height;
1036 static int update_thread_context(AVCodecContext *dst, const AVCodecContext *src)
1038 FFV1Context *fsrc = src->priv_data;
1039 FFV1Context *fdst = dst->priv_data;
1046 ThreadFrame picture = fdst->picture, last_picture = fdst->last_picture;
1047 uint8_t (*initial_states[MAX_QUANT_TABLES])[32];
1048 struct FFV1Context *slice_context[MAX_SLICES];
1049 memcpy(initial_states, fdst->initial_states, sizeof(fdst->initial_states));
1050 memcpy(slice_context, fdst->slice_context , sizeof(fdst->slice_context));
1052 memcpy(fdst, fsrc, sizeof(*fdst));
1053 memcpy(fdst->initial_states, initial_states, sizeof(fdst->initial_states));
1054 memcpy(fdst->slice_context, slice_context , sizeof(fdst->slice_context));
1055 fdst->picture = picture;
1056 fdst->last_picture = last_picture;
1057 for (i = 0; i<fdst->num_h_slices * fdst->num_v_slices; i++) {
1058 FFV1Context *fssrc = fsrc->slice_context[i];
1059 FFV1Context *fsdst = fdst->slice_context[i];
1060 copy_fields(fsdst, fssrc, fsrc);
1062 av_assert0(!fdst->plane[0].state);
1063 av_assert0(!fdst->sample_buffer);
1066 av_assert1(fdst->max_slice_count == fsrc->max_slice_count);
1069 ff_thread_release_buffer(dst, &fdst->picture);
1070 if (fsrc->picture.f->data[0]) {
1071 if ((ret = ff_thread_ref_frame(&fdst->picture, &fsrc->picture)) < 0)
1081 AVCodec ff_ffv1_decoder = {
1083 .long_name = NULL_IF_CONFIG_SMALL("FFmpeg video codec #1"),
1084 .type = AVMEDIA_TYPE_VIDEO,
1085 .id = AV_CODEC_ID_FFV1,
1086 .priv_data_size = sizeof(FFV1Context),
1087 .init = decode_init,
1088 .close = ff_ffv1_close,
1089 .decode = decode_frame,
1090 .init_thread_copy = ONLY_IF_THREADS_ENABLED(init_thread_copy),
1091 .update_thread_context = ONLY_IF_THREADS_ENABLED(update_thread_context),
1092 .capabilities = AV_CODEC_CAP_DR1 /*| AV_CODEC_CAP_DRAW_HORIZ_BAND*/ |
1093 AV_CODEC_CAP_FRAME_THREADS | AV_CODEC_CAP_SLICE_THREADS,
1094 .caps_internal = FF_CODEC_CAP_INIT_CLEANUP